Adding upstream version 1:6.1.upstream/1%6.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

35 files changed, 10341 insertions, 0 deletions

diff --git a/netlink/bitset.c b/netlink/bitset.c
new file mode 100644
index 0000000..10ce8e9
--- /dev/null
+++ b/netlink/bitset.c
@@ -0,0 +1,259 @@
+/*
+ * bitset.h - netlink bitset helpers
+ *
+ * Functions for easier handling of ethtool netlink bitset attributes.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+
+uint32_t bitset_get_count(const struct nlattr *bitset, int *retptr)
+{
+	const struct nlattr *attr;
+
+	mnl_attr_for_each_nested(attr, bitset) {
+		if (mnl_attr_get_type(attr) != ETHTOOL_A_BITSET_SIZE)
+			continue;
+		*retptr = 0;
+		return mnl_attr_get_u32(attr);
+	}
+
+	*retptr = -EFAULT;
+	return 0;
+}
+
+bool bitset_is_compact(const struct nlattr *bitset)
+{
+	const struct nlattr *attr;
+
+	mnl_attr_for_each_nested(attr, bitset) {
+		switch(mnl_attr_get_type(attr)) {
+		case ETHTOOL_A_BITSET_BITS:
+			return 0;
+		case ETHTOOL_A_BITSET_VALUE:
+		case ETHTOOL_A_BITSET_MASK:
+			return 1;
+		}
+	}
+
+	return false;
+}
+
+bool bitset_get_bit(const struct nlattr *bitset, bool mask, unsigned int idx,
+		    int *retptr)
+{
+	const struct nlattr *bitset_tb[ETHTOOL_A_BITSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(bitset_tb);
+	const struct nlattr *bits;
+	const struct nlattr *bit;
+	bool nomask;
+	int ret;
+
+	*retptr = 0;
+	ret = mnl_attr_parse_nested(bitset, attr_cb, &bitset_tb_info);
+	if (ret < 0)
+		goto err;
+
+	nomask = bitset_tb[ETHTOOL_A_BITSET_NOMASK];
+	if (mask && nomask) {
+		/* Trying to determine if a bit is set in the mask of a "no
+		 * mask" bitset doesn't make sense.
+		 */
+		ret = -EFAULT;
+		goto err;
+	}
+
+	bits = mask ? bitset_tb[ETHTOOL_A_BITSET_MASK] :
+		      bitset_tb[ETHTOOL_A_BITSET_VALUE];
+	if (bits) {
+		const uint32_t *bitmap =
+			(const uint32_t *)mnl_attr_get_payload(bits);
+
+		if (idx >= 8 * mnl_attr_get_payload_len(bits))
+			return false;
+		return bitmap[idx / 32] & (1U << (idx % 32));
+	}
+
+	bits = bitset_tb[ETHTOOL_A_BITSET_BITS];
+	if (!bits)
+		goto err;
+	mnl_attr_for_each_nested(bit, bits) {
+		const struct nlattr *tb[ETHTOOL_A_BITSET_BIT_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+		unsigned int my_idx;
+
+		if (mnl_attr_get_type(bit) != ETHTOOL_A_BITSET_BITS_BIT)
+			continue;
+		ret = mnl_attr_parse_nested(bit, attr_cb, &tb_info);
+		if (ret < 0)
+			goto err;
+		ret = -EFAULT;
+		if (!tb[ETHTOOL_A_BITSET_BIT_INDEX])
+			goto err;
+
+		my_idx = mnl_attr_get_u32(tb[ETHTOOL_A_BITSET_BIT_INDEX]);
+		if (my_idx == idx)
+			return mask || nomask || tb[ETHTOOL_A_BITSET_BIT_VALUE];
+	}
+
+	return false;
+err:
+	fprintf(stderr, "malformed netlink message (bitset)\n");
+	*retptr = ret;
+	return false;
+}
+
+bool bitset_is_empty(const struct nlattr *bitset, bool mask, int *retptr)
+{
+	const struct nlattr *bitset_tb[ETHTOOL_A_BITSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(bitset_tb);
+	const struct nlattr *bits;
+	const struct nlattr *bit;
+	int ret;
+
+	*retptr = 0;
+	ret = mnl_attr_parse_nested(bitset, attr_cb, &bitset_tb_info);
+	if (ret < 0)
+		goto err;
+
+	bits = mask ? bitset_tb[ETHTOOL_A_BITSET_MASK] :
+		      bitset_tb[ETHTOOL_A_BITSET_VALUE];
+	if (bits) {
+		const uint32_t *bitmap =
+			(const uint32_t *)mnl_attr_get_payload(bits);
+		unsigned int n = mnl_attr_get_payload_len(bits);
+		unsigned int i;
+
+		ret = -EFAULT;
+		if (n % 4)
+			goto err;
+		for (i = 0; i < n / 4; i++)
+			if (bitmap[i])
+				return false;
+		return true;
+	}
+
+	bits = bitset_tb[ETHTOOL_A_BITSET_BITS];
+	if (!bits)
+		goto err;
+	mnl_attr_for_each_nested(bit, bits) {
+		const struct nlattr *tb[ETHTOOL_A_BITSET_BIT_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+
+		if (mnl_attr_get_type(bit) != ETHTOOL_A_BITSET_BITS_BIT)
+			continue;
+		if (mask || bitset_tb[ETHTOOL_A_BITSET_NOMASK])
+			return false;
+
+		ret = mnl_attr_parse_nested(bit, attr_cb, &tb_info);
+		if (ret < 0)
+			goto err;
+		if (tb[ETHTOOL_A_BITSET_BIT_VALUE])
+			return false;
+	}
+
+	return true;
+err:
+	fprintf(stderr, "malformed netlink message (bitset)\n");
+	*retptr = ret;
+	return true;
+}
+
+static uint32_t *get_compact_bitset_attr(const struct nlattr *bitset,
+					 uint16_t type)
+{
+	const struct nlattr *tb[ETHTOOL_A_BITSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	unsigned int count;
+	int ret;
+
+	ret = mnl_attr_parse_nested(bitset, attr_cb, &tb_info);
+	if (ret < 0)
+		return NULL;
+	if (!tb[ETHTOOL_A_BITSET_SIZE] || !tb[ETHTOOL_A_BITSET_VALUE] ||
+	    !tb[type])
+		return NULL;
+	count = mnl_attr_get_u32(tb[ETHTOOL_A_BITSET_SIZE]);
+	if (8 * mnl_attr_get_payload_len(tb[type]) < count)
+		return NULL;
+
+	return mnl_attr_get_payload(tb[type]);
+}
+
+uint32_t *get_compact_bitset_value(const struct nlattr *bitset)
+{
+	return get_compact_bitset_attr(bitset, ETHTOOL_A_BITSET_VALUE);
+}
+
+uint32_t *get_compact_bitset_mask(const struct nlattr *bitset)
+{
+	return get_compact_bitset_attr(bitset, ETHTOOL_A_BITSET_MASK);
+}
+
+int walk_bitset(const struct nlattr *bitset, const struct stringset *labels,
+		bitset_walk_callback cb, void *data)
+{
+	const struct nlattr *bitset_tb[ETHTOOL_A_BITSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(bitset_tb);
+	const struct nlattr *bits;
+	const struct nlattr *bit;
+	bool is_list;
+	int ret;
+
+	ret = mnl_attr_parse_nested(bitset, attr_cb, &bitset_tb_info);
+	if (ret < 0)
+		return ret;
+	is_list = bitset_tb[ETHTOOL_A_BITSET_NOMASK];
+
+	bits = bitset_tb[ETHTOOL_A_BITSET_VALUE];
+	if (bits) {
+		const struct nlattr *mask = bitset_tb[ETHTOOL_A_BITSET_MASK];
+		unsigned int count, nwords, idx;
+		uint32_t *val_bm;
+		uint32_t *mask_bm;
+
+		if (!bitset_tb[ETHTOOL_A_BITSET_SIZE])
+			return -EFAULT;
+		count = mnl_attr_get_u32(bitset_tb[ETHTOOL_A_BITSET_SIZE]);
+		nwords = (count + 31) / 32;
+		if ((mnl_attr_get_payload_len(bits) / 4 < nwords) ||
+		    (mask && mnl_attr_get_payload_len(mask) / 4 < nwords))
+			return -EFAULT;
+
+		val_bm = mnl_attr_get_payload(bits);
+		mask_bm = mask ? mnl_attr_get_payload(mask) : NULL;
+		for (idx = 0; idx < count; idx++)
+			if (!mask_bm || (mask_bm[idx / 32] & (1 << (idx % 32))))
+				cb(idx, get_string(labels, idx),
+				   val_bm[idx / 32] & (1 << (idx % 32)), data);
+		return 0;
+	}
+
+	bits = bitset_tb[ETHTOOL_A_BITSET_BITS];
+	if (!bits)
+		return -EFAULT;
+	mnl_attr_for_each_nested(bit, bits) {
+		const struct nlattr *tb[ETHTOOL_A_BITSET_BIT_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+		const char *name;
+		unsigned int idx;
+
+		if (mnl_attr_get_type(bit) != ETHTOOL_A_BITSET_BITS_BIT)
+			continue;
+
+		ret = mnl_attr_parse_nested(bit, attr_cb, &tb_info);
+		if (ret < 0 || !tb[ETHTOOL_A_BITSET_BIT_INDEX] ||
+		    !tb[ETHTOOL_A_BITSET_BIT_NAME])
+			return -EFAULT;
+
+		idx = mnl_attr_get_u32(tb[ETHTOOL_A_BITSET_BIT_INDEX]);
+		name = mnl_attr_get_str(tb[ETHTOOL_A_BITSET_BIT_NAME]);
+		cb(idx, name, is_list || tb[ETHTOOL_A_BITSET_BIT_VALUE], data);
+	}
+
+	return 0;
+}
diff --git a/netlink/bitset.h b/netlink/bitset.h
new file mode 100644
index 0000000..4c9cdac
--- /dev/null
+++ b/netlink/bitset.h
@@ -0,0 +1,28 @@
+/*
+ * bitset.h - netlink bitset helpers
+ *
+ * Declarations of helpers for handling ethtool netlink bitsets.
+ */
+
+#ifndef ETHTOOL_NETLINK_BITSET_H__
+#define ETHTOOL_NETLINK_BITSET_H__
+
+#include <libmnl/libmnl.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+#include <linux/ethtool_netlink.h>
+#include "strset.h"
+
+typedef void (*bitset_walk_callback)(unsigned int, const char *, bool, void *);
+
+uint32_t bitset_get_count(const struct nlattr *bitset, int *retptr);
+bool bitset_get_bit(const struct nlattr *bitset, bool mask, unsigned int idx,
+		    int *retptr);
+bool bitset_is_compact(const struct nlattr *bitset);
+bool bitset_is_empty(const struct nlattr *bitset, bool mask, int *retptr);
+uint32_t *get_compact_bitset_value(const struct nlattr *bitset);
+uint32_t *get_compact_bitset_mask(const struct nlattr *bitset);
+int walk_bitset(const struct nlattr *bitset, const struct stringset *labels,
+		bitset_walk_callback cb, void *data);
+
+#endif /* ETHTOOL_NETLINK_BITSET_H__ */
diff --git a/netlink/cable_test.c b/netlink/cable_test.c
new file mode 100644
index 0000000..9305a47
--- /dev/null
+++ b/netlink/cable_test.c
@@ -0,0 +1,595 @@
+/*
+ * cable_test.c - netlink implementation of cable test command
+ *
+ * Implementation of ethtool --cable-test <dev>
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+struct cable_test_context {
+	bool breakout;
+};
+
+static int nl_get_cable_test_result(const struct nlattr *nest, uint8_t *pair,
+				    uint16_t *code)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_RESULT_MAX+1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 ||
+	    !tb[ETHTOOL_A_CABLE_RESULT_PAIR] ||
+	    !tb[ETHTOOL_A_CABLE_RESULT_CODE])
+		return -EFAULT;
+
+	*pair = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_RESULT_PAIR]);
+	*code = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_RESULT_CODE]);
+
+	return 0;
+}
+
+static int nl_get_cable_test_fault_length(const struct nlattr *nest,
+					  uint8_t *pair, unsigned int *cm)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_FAULT_LENGTH_MAX+1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 ||
+	    !tb[ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR] ||
+	    !tb[ETHTOOL_A_CABLE_FAULT_LENGTH_CM])
+		return -EFAULT;
+
+	*pair = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR]);
+	*cm = mnl_attr_get_u32(tb[ETHTOOL_A_CABLE_FAULT_LENGTH_CM]);
+
+	return 0;
+}
+
+static char *nl_code2txt(uint16_t code)
+{
+	switch (code) {
+	case ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC:
+	default:
+		return "Unknown";
+	case ETHTOOL_A_CABLE_RESULT_CODE_OK:
+		return "OK";
+	case ETHTOOL_A_CABLE_RESULT_CODE_OPEN:
+		return "Open Circuit";
+	case ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT:
+		return "Short within Pair";
+	case ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT:
+		return "Short to another pair";
+	}
+}
+
+static char *nl_pair2txt(uint8_t pair)
+{
+	switch (pair) {
+	case ETHTOOL_A_CABLE_PAIR_A:
+		return "Pair A";
+	case ETHTOOL_A_CABLE_PAIR_B:
+		return "Pair B";
+	case ETHTOOL_A_CABLE_PAIR_C:
+		return "Pair C";
+	case ETHTOOL_A_CABLE_PAIR_D:
+		return "Pair D";
+	default:
+		return "Unexpected pair";
+	}
+}
+
+static int nl_cable_test_ntf_attr(struct nlattr *evattr)
+{
+	unsigned int cm;
+	uint16_t code;
+	uint8_t pair;
+	int ret;
+
+	switch (mnl_attr_get_type(evattr)) {
+	case ETHTOOL_A_CABLE_NEST_RESULT:
+		ret = nl_get_cable_test_result(evattr, &pair, &code);
+		if (ret < 0)
+			return ret;
+
+		open_json_object(NULL);
+		print_string(PRINT_ANY, "pair", "%s ", nl_pair2txt(pair));
+		print_string(PRINT_ANY, "code", "code %s\n", nl_code2txt(code));
+		close_json_object();
+		break;
+
+	case ETHTOOL_A_CABLE_NEST_FAULT_LENGTH:
+		ret = nl_get_cable_test_fault_length(evattr, &pair, &cm);
+		if (ret < 0)
+			return ret;
+		open_json_object(NULL);
+		print_string(PRINT_ANY, "pair", "%s, ", nl_pair2txt(pair));
+		print_float(PRINT_ANY, "length", "fault length: %0.2fm\n",
+			    (float)cm / 100);
+		close_json_object();
+		break;
+	}
+	return 0;
+}
+
+static void cable_test_ntf_nest(const struct nlattr *nest)
+{
+	struct nlattr *pos;
+	int ret;
+
+	mnl_attr_for_each_nested(pos, nest) {
+		ret = nl_cable_test_ntf_attr(pos);
+		if (ret < 0)
+			return;
+	}
+}
+
+/* Returns MNL_CB_STOP when the test is complete. Used when executing
+ * a test, but not suitable for monitor.
+ */
+static int cable_test_ntf_stop_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_TEST_NTF_MAX + 1] = {};
+	u8 status = ETHTOOL_A_CABLE_TEST_NTF_STATUS_UNSPEC;
+	struct cable_test_context *ctctx;
+	struct nl_context *nlctx = data;
+	DECLARE_ATTR_TB_INFO(tb);
+	bool silent;
+	int err_ret;
+	int ret;
+
+	ctctx = nlctx->cmd_private;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_CABLE_TEST_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (tb[ETHTOOL_A_CABLE_TEST_NTF_STATUS])
+		status = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_TEST_NTF_STATUS]);
+
+	switch (status) {
+	case ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED:
+		print_string(PRINT_FP, "status",
+			     "Cable test started for device %s.\n",
+			     nlctx->devname);
+		break;
+	case ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED:
+		print_string(PRINT_FP, "status",
+			     "Cable test completed for device %s.\n",
+			     nlctx->devname);
+		break;
+	default:
+		break;
+	}
+
+	if (tb[ETHTOOL_A_CABLE_TEST_NTF_NEST])
+		cable_test_ntf_nest(tb[ETHTOOL_A_CABLE_TEST_NTF_NEST]);
+
+	if (status == ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED) {
+		if (ctctx)
+			ctctx->breakout = true;
+		return MNL_CB_STOP;
+	}
+
+	return MNL_CB_OK;
+}
+
+/* Wrapper around cable_test_ntf_stop_cb() which does not return STOP,
+ * used for monitor
+ */
+int cable_test_ntf_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	int status = cable_test_ntf_stop_cb(nlhdr, data);
+
+	if (status == MNL_CB_STOP)
+		status = MNL_CB_OK;
+
+	return status;
+}
+
+static int nl_cable_test_results_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct genlmsghdr *ghdr = (const struct genlmsghdr *)(nlhdr + 1);
+
+	if (ghdr->cmd != ETHTOOL_MSG_CABLE_TEST_NTF)
+		return MNL_CB_OK;
+
+	return cable_test_ntf_stop_cb(nlhdr, data);
+}
+
+/* Receive the broadcasted messages until we get the cable test
+ * results
+ */
+static int nl_cable_test_process_results(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	struct cable_test_context ctctx;
+	int err;
+
+	nlctx->is_monitor = true;
+	nlsk->port = 0;
+	nlsk->seq = 0;
+	nlctx->filter_devname = ctx->devname;
+
+	ctctx.breakout = false;
+	nlctx->cmd_private = &ctctx;
+
+	while (!ctctx.breakout) {
+		err = nlsock_process_reply(nlsk, nl_cable_test_results_cb,
+					   nlctx);
+		if (err)
+			return err;
+	}
+
+	return err;
+}
+
+int nl_cable_test(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	uint32_t grpid = nlctx->ethnl_mongrp;
+	int ret;
+
+	/* Join the multicast group so we can receive the results in a
+	 * race free way.
+	 */
+	if (!grpid) {
+		fprintf(stderr, "multicast group 'monitor' not found\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = mnl_socket_setsockopt(nlsk->sk, NETLINK_ADD_MEMBERSHIP,
+				    &grpid, sizeof(grpid));
+	if (ret < 0)
+		return ret;
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_CABLE_TEST_ACT,
+				      ETHTOOL_A_CABLE_TEST_HEADER, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		fprintf(stderr, "Cannot start cable test\n");
+	else {
+		new_json_obj(ctx->json);
+
+		ret = nl_cable_test_process_results(ctx);
+
+		delete_json_obj();
+	}
+
+	return ret;
+}
+
+static int nl_get_cable_test_tdr_amplitude(const struct nlattr *nest,
+					   uint8_t *pair, int16_t *mV)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_AMPLITUDE_MAX+1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	uint16_t mV_unsigned;
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 ||
+	    !tb[ETHTOOL_A_CABLE_AMPLITUDE_PAIR] ||
+	    !tb[ETHTOOL_A_CABLE_AMPLITUDE_mV])
+		return -EFAULT;
+
+	*pair = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_AMPLITUDE_PAIR]);
+	mV_unsigned = mnl_attr_get_u16(tb[ETHTOOL_A_CABLE_AMPLITUDE_mV]);
+	*mV = (int16_t)(mV_unsigned);
+
+	return 0;
+}
+
+static int nl_get_cable_test_tdr_pulse(const struct nlattr *nest, uint16_t *mV)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_PULSE_MAX+1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 ||
+	    !tb[ETHTOOL_A_CABLE_PULSE_mV])
+		return -EFAULT;
+
+	*mV = mnl_attr_get_u16(tb[ETHTOOL_A_CABLE_PULSE_mV]);
+
+	return 0;
+}
+
+static int nl_get_cable_test_tdr_step(const struct nlattr *nest,
+				      uint32_t *first, uint32_t *last,
+				      uint32_t *step)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_STEP_MAX+1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 ||
+	    !tb[ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE] ||
+	    !tb[ETHTOOL_A_CABLE_STEP_LAST_DISTANCE] ||
+	    !tb[ETHTOOL_A_CABLE_STEP_STEP_DISTANCE])
+		return -EFAULT;
+
+	*first = mnl_attr_get_u32(tb[ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE]);
+	*last = mnl_attr_get_u32(tb[ETHTOOL_A_CABLE_STEP_LAST_DISTANCE]);
+	*step = mnl_attr_get_u32(tb[ETHTOOL_A_CABLE_STEP_STEP_DISTANCE]);
+
+	return 0;
+}
+
+static int nl_cable_test_tdr_ntf_attr(struct nlattr *evattr)
+{
+	uint32_t first, last, step;
+	uint8_t pair;
+	int ret;
+
+	switch (mnl_attr_get_type(evattr)) {
+	case ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE: {
+		int16_t mV;
+
+		ret = nl_get_cable_test_tdr_amplitude(
+			evattr, &pair, &mV);
+		if (ret < 0)
+			return ret;
+
+		open_json_object(NULL);
+		print_string(PRINT_ANY, "pair", "%s ", nl_pair2txt(pair));
+		print_int(PRINT_ANY, "amplitude", "Amplitude %4d\n", mV);
+		close_json_object();
+		break;
+	}
+	case ETHTOOL_A_CABLE_TDR_NEST_PULSE: {
+		uint16_t mV;
+
+		ret = nl_get_cable_test_tdr_pulse(evattr, &mV);
+		if (ret < 0)
+			return ret;
+
+		open_json_object(NULL);
+		print_uint(PRINT_ANY, "pulse", "TDR Pulse %dmV\n", mV);
+		close_json_object();
+		break;
+	}
+	case ETHTOOL_A_CABLE_TDR_NEST_STEP:
+		ret = nl_get_cable_test_tdr_step(evattr, &first, &last, &step);
+		if (ret < 0)
+			return ret;
+
+		open_json_object(NULL);
+		print_float(PRINT_ANY, "first", "Step configuration: %.2f-",
+			    (float)first / 100);
+		print_float(PRINT_ANY, "last", "%.2f meters ",
+			    (float)last / 100);
+		print_float(PRINT_ANY, "step", "in %.2fm steps\n",
+			    (float)step / 100);
+		close_json_object();
+		break;
+	}
+	return 0;
+}
+
+static void cable_test_tdr_ntf_nest(const struct nlattr *nest)
+{
+	struct nlattr *pos;
+	int ret;
+
+	mnl_attr_for_each_nested(pos, nest) {
+		ret = nl_cable_test_tdr_ntf_attr(pos);
+		if (ret < 0)
+			return;
+	}
+}
+
+/* Returns MNL_CB_STOP when the test is complete. Used when executing
+ * a test, but not suitable for monitor.
+ */
+int cable_test_tdr_ntf_stop_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_CABLE_TEST_TDR_NTF_MAX + 1] = {};
+	u8 status = ETHTOOL_A_CABLE_TEST_NTF_STATUS_UNSPEC;
+	struct cable_test_context *ctctx;
+	struct nl_context *nlctx = data;
+
+	DECLARE_ATTR_TB_INFO(tb);
+	bool silent;
+	int err_ret;
+	int ret;
+
+	ctctx = nlctx->cmd_private;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_CABLE_TEST_TDR_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (tb[ETHTOOL_A_CABLE_TEST_NTF_STATUS])
+		status = mnl_attr_get_u8(tb[ETHTOOL_A_CABLE_TEST_NTF_STATUS]);
+
+	switch (status) {
+	case ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED:
+		print_string(PRINT_FP, "status",
+			     "Cable test TDR started for device %s.\n",
+			     nlctx->devname);
+		break;
+	case ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED:
+		print_string(PRINT_FP, "status",
+			     "Cable test TDR completed for device %s.\n",
+			     nlctx->devname);
+		break;
+	default:
+		break;
+	}
+
+	if (tb[ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST])
+		cable_test_tdr_ntf_nest(tb[ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST]);
+
+	if (status == ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED) {
+		if (ctctx)
+			ctctx->breakout = true;
+		return MNL_CB_STOP;
+	}
+
+	return MNL_CB_OK;
+}
+
+/* Wrapper around cable_test_tdr_ntf_stop_cb() which does not return
+ * STOP, used for monitor
+ */
+int cable_test_tdr_ntf_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	int status = cable_test_tdr_ntf_stop_cb(nlhdr, data);
+
+	if (status == MNL_CB_STOP)
+		status = MNL_CB_OK;
+
+	return status;
+}
+
+static int nl_cable_test_tdr_results_cb(const struct nlmsghdr *nlhdr,
+					void *data)
+{
+	const struct genlmsghdr *ghdr = (const struct genlmsghdr *)(nlhdr + 1);
+
+	if (ghdr->cmd != ETHTOOL_MSG_CABLE_TEST_TDR_NTF)
+		return MNL_CB_OK;
+
+	cable_test_tdr_ntf_cb(nlhdr, data);
+
+	return MNL_CB_STOP;
+}
+
+/* Receive the broadcasted messages until we get the cable test
+ * results
+ */
+static int nl_cable_test_tdr_process_results(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	struct cable_test_context ctctx;
+	int err;
+
+	nlctx->is_monitor = true;
+	nlsk->port = 0;
+	nlsk->seq = 0;
+	nlctx->filter_devname = ctx->devname;
+
+	ctctx.breakout = false;
+	nlctx->cmd_private = &ctctx;
+
+	while (!ctctx.breakout) {
+		err = nlsock_process_reply(nlsk, nl_cable_test_tdr_results_cb,
+					   nlctx);
+		if (err)
+			return err;
+	}
+
+	return err;
+}
+
+static const struct param_parser tdr_params[] = {
+	{
+		.arg		= "first",
+		.type		= ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST,
+		.group		= ETHTOOL_A_CABLE_TEST_TDR_CFG,
+		.handler	= nl_parse_direct_m2cm,
+	},
+	{
+		.arg		= "last",
+		.type		= ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST,
+		.group		= ETHTOOL_A_CABLE_TEST_TDR_CFG,
+		.handler	= nl_parse_direct_m2cm,
+	},
+	{
+		.arg		= "step",
+		.type		= ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP,
+		.group		= ETHTOOL_A_CABLE_TEST_TDR_CFG,
+		.handler	= nl_parse_direct_m2cm,
+	},
+	{
+		.arg		= "pair",
+		.type		= ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR,
+		.group		= ETHTOOL_A_CABLE_TEST_TDR_CFG,
+		.handler	= nl_parse_direct_u8,
+	},
+	{}
+};
+
+int nl_cable_test_tdr(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	uint32_t grpid = nlctx->ethnl_mongrp;
+	struct nl_msg_buff *msgbuff;
+	int ret;
+
+	nlctx->cmd = "--cable-test-tdr";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	msgbuff = &nlsk->msgbuff;
+
+	/* Join the multicast group so we can receive the results in a
+	 * race free way.
+	 */
+	if (!grpid) {
+		fprintf(stderr, "multicast group 'monitor' not found\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = mnl_socket_setsockopt(nlsk->sk, NETLINK_ADD_MEMBERSHIP,
+				    &grpid, sizeof(grpid));
+	if (ret < 0)
+		return ret;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_CABLE_TEST_TDR_ACT,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_CABLE_TEST_TDR_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, tdr_params, NULL, PARSER_GROUP_NEST, NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		fprintf(stderr, "Cannot start cable test TDR\n");
+	else {
+		new_json_obj(ctx->json);
+
+		ret = nl_cable_test_tdr_process_results(ctx);
+
+		delete_json_obj();
+	}
+
+	return ret;
+}
diff --git a/netlink/channels.c b/netlink/channels.c
new file mode 100644
index 0000000..894c74b
--- /dev/null
+++ b/netlink/channels.c
@@ -0,0 +1,141 @@
+/*
+ * channels.c - netlink implementation of channel commands
+ *
+ * Implementation of "ethtool -l <dev>" and "ethtool -L <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+/* CHANNELS_GET */
+
+int channels_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_CHANNELS_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_CHANNELS_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		putchar('\n');
+	printf("Channel parameters for %s:\n", nlctx->devname);
+	printf("Pre-set maximums:\n");
+	show_u32(tb[ETHTOOL_A_CHANNELS_RX_MAX], "RX:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_TX_MAX], "TX:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_OTHER_MAX], "Other:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_COMBINED_MAX], "Combined:\t");
+	printf("Current hardware settings:\n");
+	show_u32(tb[ETHTOOL_A_CHANNELS_RX_COUNT], "RX:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_TX_COUNT], "TX:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_OTHER_COUNT], "Other:\t\t");
+	show_u32(tb[ETHTOOL_A_CHANNELS_COMBINED_COUNT], "Combined:\t");
+
+	return MNL_CB_OK;
+}
+
+int nl_gchannels(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_CHANNELS_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_CHANNELS_GET,
+				      ETHTOOL_A_CHANNELS_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, channels_reply_cb);
+}
+
+/* CHANNELS_SET */
+
+static const struct param_parser schannels_params[] = {
+	{
+		.arg		= "rx",
+		.type		= ETHTOOL_A_CHANNELS_RX_COUNT,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx",
+		.type		= ETHTOOL_A_CHANNELS_TX_COUNT,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "other",
+		.type		= ETHTOOL_A_CHANNELS_OTHER_COUNT,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "combined",
+		.type		= ETHTOOL_A_CHANNELS_COMBINED_COUNT,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_schannels(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_CHANNELS_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-L";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_CHANNELS_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_CHANNELS_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, schannels_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 1;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 1;
+}
diff --git a/netlink/coalesce.c b/netlink/coalesce.c
new file mode 100644
index 0000000..15037c2
--- /dev/null
+++ b/netlink/coalesce.c
@@ -0,0 +1,285 @@
+/*
+ * coalesce.c - netlink implementation of coalescing commands
+ *
+ * Implementation of "ethtool -c <dev>" and "ethtool -C <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+/* COALESCE_GET */
+
+int coalesce_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_COALESCE_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_COALESCE_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		putchar('\n');
+	printf("Coalesce parameters for %s:\n", nlctx->devname);
+	show_bool("rx", "Adaptive RX: %s  ",
+		  tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX]);
+	show_bool("tx", "TX: %s\n", tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX]);
+	show_u32(tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS],
+		 "stats-block-usecs: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL],
+		 "sample-interval: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], "pkt-rate-low: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], "pkt-rate-high: ");
+	putchar('\n');
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_USECS], "rx-usecs: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], "rx-frames: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], "rx-usecs-irq: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], "rx-frames-irq: ");
+	putchar('\n');
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS], "tx-usecs: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], "tx-frames: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], "tx-usecs-irq: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], "tx-frames-irq: ");
+	putchar('\n');
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], "rx-usecs-low: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], "rx-frame-low: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], "tx-usecs-low: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], "tx-frame-low: ");
+	putchar('\n');
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], "rx-usecs-high: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], "rx-frame-high: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], "tx-usecs-high: ");
+	show_u32(tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], "tx-frame-high: ");
+	putchar('\n');
+	show_bool("rx", "CQE mode RX: %s  ",
+		  tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX]);
+	show_bool("tx", "TX: %s\n", tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX]);
+	putchar('\n');
+
+	return MNL_CB_OK;
+}
+
+int nl_gcoalesce(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_COALESCE_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_COALESCE_GET,
+				      ETHTOOL_A_COALESCE_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, coalesce_reply_cb);
+}
+
+/* COALESCE_SET */
+
+static const struct param_parser scoalesce_params[] = {
+	{
+		.arg		= "adaptive-rx",
+		.type		= ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "adaptive-tx",
+		.type		= ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "sample-interval",
+		.type		= ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "stats-block-usecs",
+		.type		= ETHTOOL_A_COALESCE_STATS_BLOCK_USECS,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "pkt-rate-low",
+		.type		= ETHTOOL_A_COALESCE_PKT_RATE_LOW,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "pkt-rate-high",
+		.type		= ETHTOOL_A_COALESCE_PKT_RATE_HIGH,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-usecs",
+		.type		= ETHTOOL_A_COALESCE_RX_USECS,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-frames",
+		.type		= ETHTOOL_A_COALESCE_RX_MAX_FRAMES,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-usecs-irq",
+		.type		= ETHTOOL_A_COALESCE_RX_USECS_IRQ,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-frames-irq",
+		.type		= ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-usecs",
+		.type		= ETHTOOL_A_COALESCE_TX_USECS,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-frames",
+		.type		= ETHTOOL_A_COALESCE_TX_MAX_FRAMES,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-usecs-irq",
+		.type		= ETHTOOL_A_COALESCE_TX_USECS_IRQ,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-frames-irq",
+		.type		= ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-usecs-low",
+		.type		= ETHTOOL_A_COALESCE_RX_USECS_LOW,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-frames-low",
+		.type		= ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-usecs-low",
+		.type		= ETHTOOL_A_COALESCE_TX_USECS_LOW,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-frames-low",
+		.type		= ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-usecs-high",
+		.type		= ETHTOOL_A_COALESCE_RX_USECS_HIGH,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-frames-high",
+		.type		= ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-usecs-high",
+		.type		= ETHTOOL_A_COALESCE_TX_USECS_HIGH,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-frames-high",
+		.type		= ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "cqe-mode-rx",
+		.type		= ETHTOOL_A_COALESCE_USE_CQE_MODE_RX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "cqe-mode-tx",
+		.type		= ETHTOOL_A_COALESCE_USE_CQE_MODE_TX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_scoalesce(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_COALESCE_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-C";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_COALESCE_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_COALESCE_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, scoalesce_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 1;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 1;
+}
diff --git a/netlink/desc-ethtool.c b/netlink/desc-ethtool.c
new file mode 100644
index 0000000..b3ac64d
--- /dev/null
+++ b/netlink/desc-ethtool.c
@@ -0,0 +1,529 @@
+/*
+ * desc-ethtool.c - ethtool netlink format descriptions
+ *
+ * Descriptions of ethtool netlink messages and attributes for pretty print.
+ */
+
+#include "../internal.h"
+#include <linux/ethtool_netlink.h>
+
+#include "prettymsg.h"
+
+static const struct pretty_nla_desc __header_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_HEADER_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_HEADER_DEV_INDEX),
+	NLATTR_DESC_STRING(ETHTOOL_A_HEADER_DEV_NAME),
+	NLATTR_DESC_X32(ETHTOOL_A_HEADER_FLAGS),
+};
+
+static const struct pretty_nla_desc __bitset_bit_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_BITSET_BIT_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_BITSET_BIT_INDEX),
+	NLATTR_DESC_STRING(ETHTOOL_A_BITSET_BIT_NAME),
+	NLATTR_DESC_FLAG(ETHTOOL_A_BITSET_BIT_VALUE),
+};
+
+static const struct pretty_nla_desc __bitset_bits_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_BITSET_BITS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_BITSET_BITS_BIT, bitset_bit),
+};
+
+static const struct pretty_nla_desc __bitset_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_BITSET_UNSPEC),
+	NLATTR_DESC_FLAG(ETHTOOL_A_BITSET_NOMASK),
+	NLATTR_DESC_U32(ETHTOOL_A_BITSET_SIZE),
+	NLATTR_DESC_NESTED(ETHTOOL_A_BITSET_BITS, bitset_bits),
+	NLATTR_DESC_BINARY(ETHTOOL_A_BITSET_VALUE),
+	NLATTR_DESC_BINARY(ETHTOOL_A_BITSET_MASK),
+};
+
+static const struct pretty_nla_desc __string_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STRING_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_STRING_INDEX),
+	NLATTR_DESC_STRING(ETHTOOL_A_STRING_VALUE),
+};
+
+static const struct pretty_nla_desc __strings_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STRINGS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STRINGS_STRING, string),
+};
+
+static const struct pretty_nla_desc __stringset_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STRINGSET_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_STRINGSET_ID),
+	NLATTR_DESC_U32(ETHTOOL_A_STRINGSET_COUNT),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STRINGSET_STRINGS, strings),
+};
+
+static const struct pretty_nla_desc __stringsets_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STRINGSETS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STRINGSETS_STRINGSET, stringset),
+};
+
+static const struct pretty_nla_desc __strset_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STRSET_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STRSET_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STRSET_STRINGSETS, stringsets),
+	NLATTR_DESC_FLAG(ETHTOOL_A_STRSET_COUNTS_ONLY),
+};
+
+static const struct pretty_nla_desc __linkinfo_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_LINKINFO_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_LINKINFO_HEADER, header),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKINFO_PORT),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKINFO_PHYADDR),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKINFO_TP_MDIX),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKINFO_TP_MDIX_CTRL),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKINFO_TRANSCEIVER),
+};
+
+static const char *__linkmodes_rate_matching_names[] = {
+	[RATE_MATCH_NONE]	= "RATE_MATCH_NONE",
+	[RATE_MATCH_PAUSE]	= "RATE_MATCH_PAUSE",
+	[RATE_MATCH_CRS]	= "RATE_MATCH_CRS",
+	[RATE_MATCH_OPEN_LOOP]	= "RATE_MATCH_OPEN_LOOP",
+};
+
+static const struct pretty_nla_desc __linkmodes_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_LINKMODES_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_LINKMODES_HEADER, header),
+	NLATTR_DESC_BOOL(ETHTOOL_A_LINKMODES_AUTONEG),
+	NLATTR_DESC_NESTED(ETHTOOL_A_LINKMODES_OURS, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_LINKMODES_PEER, bitset),
+	NLATTR_DESC_U32(ETHTOOL_A_LINKMODES_SPEED),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKMODES_DUPLEX),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE),
+	NLATTR_DESC_U32(ETHTOOL_A_LINKMODES_LANES),
+	NLATTR_DESC_U8_ENUM(ETHTOOL_A_LINKMODES_RATE_MATCHING,
+			    linkmodes_rate_matching),
+};
+
+static const struct pretty_nla_desc __linkstate_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_LINKSTATE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_LINKSTATE_HEADER, header),
+	NLATTR_DESC_BOOL(ETHTOOL_A_LINKSTATE_LINK),
+	NLATTR_DESC_U32(ETHTOOL_A_LINKSTATE_SQI),
+	NLATTR_DESC_U32(ETHTOOL_A_LINKSTATE_SQI_MAX),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKSTATE_EXT_STATE),
+	NLATTR_DESC_U8(ETHTOOL_A_LINKSTATE_EXT_SUBSTATE),
+};
+
+static const struct pretty_nla_desc __debug_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_DEBUG_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_DEBUG_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_DEBUG_MSGMASK, bitset),
+};
+
+static const struct pretty_nla_desc __wol_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_WOL_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_WOL_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_WOL_MODES, bitset),
+	NLATTR_DESC_BINARY(ETHTOOL_A_WOL_SOPASS),
+};
+
+static const struct pretty_nla_desc __features_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_FEATURES_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEATURES_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEATURES_HW, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEATURES_WANTED, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEATURES_ACTIVE, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEATURES_NOCHANGE, bitset),
+};
+
+static const struct pretty_nla_desc __privflags_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_PRIVFLAGS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PRIVFLAGS_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PRIVFLAGS_FLAGS, bitset),
+};
+
+static const char *__rings_tcp_data_split_names[] = {
+	[ETHTOOL_TCP_DATA_SPLIT_UNKNOWN]	= "ETHTOOL_TCP_DATA_SPLIT_UNKNOWN",
+	[ETHTOOL_TCP_DATA_SPLIT_DISABLED]	= "ETHTOOL_TCP_DATA_SPLIT_DISABLED",
+	[ETHTOOL_TCP_DATA_SPLIT_ENABLED]	= "ETHTOOL_TCP_DATA_SPLIT_ENABLED",
+};
+
+static const struct pretty_nla_desc __rings_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_RINGS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_RINGS_HEADER, header),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_MINI_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_JUMBO_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_TX_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_MINI),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_JUMBO),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_TX),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_RX_BUF_LEN),
+	NLATTR_DESC_U8_ENUM(ETHTOOL_A_RINGS_TCP_DATA_SPLIT, rings_tcp_data_split),
+	NLATTR_DESC_U32(ETHTOOL_A_RINGS_CQE_SIZE),
+	NLATTR_DESC_BOOL(ETHTOOL_A_RINGS_TX_PUSH),
+};
+
+static const struct pretty_nla_desc __channels_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CHANNELS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CHANNELS_HEADER, header),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_RX_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_TX_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_OTHER_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_COMBINED_MAX),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_RX_COUNT),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_TX_COUNT),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_OTHER_COUNT),
+	NLATTR_DESC_U32(ETHTOOL_A_CHANNELS_COMBINED_COUNT),
+};
+
+static const struct pretty_nla_desc __coalesce_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_COALESCE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_COALESCE_HEADER, header),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_USECS),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_MAX_FRAMES),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_USECS_IRQ),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_USECS),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_MAX_FRAMES),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_USECS_IRQ),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_STATS_BLOCK_USECS),
+	NLATTR_DESC_BOOL(ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX),
+	NLATTR_DESC_BOOL(ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_PKT_RATE_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_USECS_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_USECS_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_PKT_RATE_HIGH),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_USECS_HIGH),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_USECS_HIGH),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH),
+	NLATTR_DESC_U32(ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL),
+	NLATTR_DESC_BOOL(ETHTOOL_A_COALESCE_USE_CQE_MODE_TX),
+	NLATTR_DESC_BOOL(ETHTOOL_A_COALESCE_USE_CQE_MODE_RX),
+};
+
+static const struct pretty_nla_desc __pause_stats_desc[] = {
+	NLATTR_DESC_BINARY(ETHTOOL_A_PAUSE_STAT_PAD),
+	NLATTR_DESC_U64(ETHTOOL_A_PAUSE_STAT_TX_FRAMES),
+	NLATTR_DESC_U64(ETHTOOL_A_PAUSE_STAT_RX_FRAMES),
+};
+
+static const struct pretty_nla_desc __pause_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_PAUSE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PAUSE_HEADER, header),
+	NLATTR_DESC_BOOL(ETHTOOL_A_PAUSE_AUTONEG),
+	NLATTR_DESC_BOOL(ETHTOOL_A_PAUSE_RX),
+	NLATTR_DESC_BOOL(ETHTOOL_A_PAUSE_TX),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PAUSE_STATS, pause_stats),
+};
+
+static const struct pretty_nla_desc __eee_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_EEE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_EEE_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_EEE_MODES_OURS, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_EEE_MODES_PEER, bitset),
+	NLATTR_DESC_BOOL(ETHTOOL_A_EEE_ACTIVE),
+	NLATTR_DESC_BOOL(ETHTOOL_A_EEE_ENABLED),
+	NLATTR_DESC_BOOL(ETHTOOL_A_EEE_TX_LPI_ENABLED),
+	NLATTR_DESC_U32(ETHTOOL_A_EEE_TX_LPI_TIMER),
+};
+
+static const struct pretty_nla_desc __tsinfo_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_TSINFO_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TSINFO_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TSINFO_TIMESTAMPING, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TSINFO_TX_TYPES, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TSINFO_RX_FILTERS, bitset),
+	NLATTR_DESC_U32(ETHTOOL_A_TSINFO_PHC_INDEX),
+};
+
+static const struct pretty_nla_desc __cable_test_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TEST_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_HEADER, header),
+};
+
+static const struct pretty_nla_desc __cable_test_result_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_RESULT_UNSPEC),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_RESULT_PAIR),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_RESULT_CODE),
+};
+
+static const struct pretty_nla_desc __cable_test_flength_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_FAULT_LENGTH_UNSPEC),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_FAULT_LENGTH_CM),
+};
+
+static const struct pretty_nla_desc __cable_nest_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_NEST_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_NEST_RESULT, cable_test_result),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_NEST_FAULT_LENGTH,
+			   cable_test_flength),
+};
+
+static const struct pretty_nla_desc __cable_test_ntf_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TEST_NTF_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_NTF_HEADER, header),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_TEST_NTF_STATUS),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_NTF_NEST, cable_nest),
+};
+
+static const struct pretty_nla_desc __cable_test_tdr_cfg_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TEST_TDR_CFG_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR),
+};
+
+static const struct pretty_nla_desc __cable_test_tdr_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TEST_TDR_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_TDR_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_TDR_CFG, cable_test_tdr_cfg),
+};
+
+static const struct pretty_nla_desc __cable_step_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_STEP_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_STEP_LAST_DISTANCE),
+	NLATTR_DESC_U32(ETHTOOL_A_CABLE_STEP_STEP_DISTANCE),
+};
+
+static const struct pretty_nla_desc __cable_amplitude_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_AMPLITUDE_UNSPEC),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_AMPLITUDE_PAIR),
+	NLATTR_DESC_S16(ETHTOOL_A_CABLE_AMPLITUDE_mV),
+};
+
+static const struct pretty_nla_desc __cable_pulse_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_PULSE_UNSPEC),
+	NLATTR_DESC_S16(ETHTOOL_A_CABLE_PULSE_mV),
+};
+
+static const struct pretty_nla_desc __cable_test_tdr_nest_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TDR_NEST_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TDR_NEST_STEP, cable_step),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE, cable_amplitude),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TDR_NEST_PULSE, cable_pulse),
+};
+
+static const struct pretty_nla_desc __cable_test_tdr_ntf_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_CABLE_TEST_TDR_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_TDR_NTF_HEADER, header),
+	NLATTR_DESC_U8(ETHTOOL_A_CABLE_TEST_TDR_NTF_STATUS),
+	NLATTR_DESC_NESTED(ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST,
+			   cable_test_tdr_nest),
+};
+
+const struct pretty_nla_desc __tunnel_udp_entry_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_TUNNEL_UDP_ENTRY_UNSPEC),
+	NLATTR_DESC_U16(ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT),
+	NLATTR_DESC_U32(ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE),
+};
+
+const struct pretty_nla_desc __tunnel_udp_table_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_TUNNEL_UDP_TABLE_UNSPEC),
+	NLATTR_DESC_U32(ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY, tunnel_udp_entry),
+};
+
+const struct pretty_nla_desc __tunnel_udp_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_TUNNEL_UDP_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TUNNEL_UDP_TABLE, tunnel_udp_table),
+};
+
+const struct pretty_nla_desc __tunnel_info_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_TUNNEL_INFO_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TUNNEL_INFO_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_TUNNEL_INFO_UDP_PORTS, tunnel_udp),
+};
+
+const struct pretty_nla_desc __fec_stats_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_FEC_STAT_UNSPEC),
+	NLATTR_DESC_BINARY(ETHTOOL_A_FEC_STAT_PAD),
+	NLATTR_DESC_U64(ETHTOOL_A_FEC_STAT_CORRECTED),
+	NLATTR_DESC_U64(ETHTOOL_A_FEC_STAT_UNCORR),
+	NLATTR_DESC_U64(ETHTOOL_A_FEC_STAT_CORR_BITS),
+};
+
+static const struct pretty_nla_desc __fec_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_FEC_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEC_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEC_MODES, bitset),
+	NLATTR_DESC_BOOL(ETHTOOL_A_FEC_AUTO),
+	NLATTR_DESC_U32(ETHTOOL_A_FEC_ACTIVE),
+	NLATTR_DESC_NESTED(ETHTOOL_A_FEC_STATS, fec_stats),
+};
+
+const struct pretty_nla_desc __module_eeprom_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_MODULE_EEPROM_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_MODULE_EEPROM_HEADER, header),
+	NLATTR_DESC_U32(ETHTOOL_A_MODULE_EEPROM_OFFSET),
+	NLATTR_DESC_U32(ETHTOOL_A_MODULE_EEPROM_LENGTH),
+	NLATTR_DESC_U8(ETHTOOL_A_MODULE_EEPROM_PAGE),
+	NLATTR_DESC_U8(ETHTOOL_A_MODULE_EEPROM_BANK),
+	NLATTR_DESC_U8(ETHTOOL_A_MODULE_EEPROM_I2C_ADDRESS),
+	NLATTR_DESC_BINARY(ETHTOOL_A_MODULE_EEPROM_DATA)
+};
+
+static const struct pretty_nla_desc __stats_grp_stat_desc[] = {
+	NLATTR_DESC_U64(0),  NLATTR_DESC_U64(1),  NLATTR_DESC_U64(2),
+	NLATTR_DESC_U64(3),  NLATTR_DESC_U64(4),  NLATTR_DESC_U64(5),
+	NLATTR_DESC_U64(6),  NLATTR_DESC_U64(7),  NLATTR_DESC_U64(8),
+	NLATTR_DESC_U64(9),  NLATTR_DESC_U64(10), NLATTR_DESC_U64(11),
+	NLATTR_DESC_U64(12), NLATTR_DESC_U64(13), NLATTR_DESC_U64(14),
+	NLATTR_DESC_U64(15), NLATTR_DESC_U64(16), NLATTR_DESC_U64(17),
+	NLATTR_DESC_U64(18), NLATTR_DESC_U64(19), NLATTR_DESC_U64(20),
+	NLATTR_DESC_U64(21), NLATTR_DESC_U64(22), NLATTR_DESC_U64(23),
+	NLATTR_DESC_U64(24), NLATTR_DESC_U64(25), NLATTR_DESC_U64(26),
+	NLATTR_DESC_U64(27), NLATTR_DESC_U64(28), NLATTR_DESC_U64(29),
+};
+
+static const struct pretty_nla_desc __stats_grp_hist_desc[] = {
+	NLATTR_DESC_U32(ETHTOOL_A_STATS_GRP_HIST_BKT_LOW),
+	NLATTR_DESC_U32(ETHTOOL_A_STATS_GRP_HIST_BKT_HI),
+	NLATTR_DESC_U64(ETHTOOL_A_STATS_GRP_HIST_VAL),
+};
+
+static const struct pretty_nla_desc __stats_grp_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STATS_GRP_UNSPEC),
+	NLATTR_DESC_INVALID(ETHTOOL_A_STATS_GRP_PAD),
+	NLATTR_DESC_U32(ETHTOOL_A_STATS_GRP_ID),
+	NLATTR_DESC_U32(ETHTOOL_A_STATS_GRP_SS_ID),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_GRP_STAT, stats_grp_stat),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_GRP_HIST_RX, stats_grp_hist),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_GRP_HIST_TX, stats_grp_hist),
+};
+
+static const struct pretty_nla_desc __stats_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_STATS_UNSPEC),
+	NLATTR_DESC_INVALID(ETHTOOL_A_STATS_PAD),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_HEADER, header),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_GROUPS, bitset),
+	NLATTR_DESC_NESTED(ETHTOOL_A_STATS_GRP, stats_grp),
+};
+
+static const struct pretty_nla_desc __phc_vclocks_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_PHC_VCLOCKS_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PHC_VCLOCKS_HEADER, header),
+	NLATTR_DESC_U32(ETHTOOL_A_PHC_VCLOCKS_NUM),
+	NLATTR_DESC_BINARY(ETHTOOL_A_PHC_VCLOCKS_INDEX),
+};
+
+static const struct pretty_nla_desc __module_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_MODULE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_MODULE_HEADER, header),
+	NLATTR_DESC_U8(ETHTOOL_A_MODULE_POWER_MODE_POLICY),
+	NLATTR_DESC_U8(ETHTOOL_A_MODULE_POWER_MODE),
+};
+
+static const char *__pse_admin_state_names[] = {
+	[ETHTOOL_PODL_PSE_ADMIN_STATE_UNKNOWN]	= "ETHTOOL_PODL_PSE_ADMIN_STATE_UNKNOWN",
+	[ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED]	= "ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED",
+	[ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED]	= "ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED",
+};
+
+static const char *__pse_pw_d_status_names[] = {
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_UNKNOWN]		= "ETHTOOL_PODL_PSE_PW_D_STATUS_UNKNOWN",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_DISABLED]		= "ETHTOOL_PODL_PSE_PW_D_STATUS_DISABLED",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_SEARCHING]	= "ETHTOOL_PODL_PSE_PW_D_STATUS_SEARCHING",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_DELIVERING]	= "ETHTOOL_PODL_PSE_PW_D_STATUS_DELIVERING",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_SLEEP]		= "ETHTOOL_PODL_PSE_PW_D_STATUS_SLEEP",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_IDLE]		= "ETHTOOL_PODL_PSE_PW_D_STATUS_IDLE",
+	[ETHTOOL_PODL_PSE_PW_D_STATUS_ERROR]		= "ETHTOOL_PODL_PSE_PW_D_STATUS_ERROR",
+};
+
+static const struct pretty_nla_desc __pse_desc[] = {
+	NLATTR_DESC_INVALID(ETHTOOL_A_PSE_UNSPEC),
+	NLATTR_DESC_NESTED(ETHTOOL_A_PSE_HEADER, header),
+	NLATTR_DESC_U32_ENUM(ETHTOOL_A_PODL_PSE_ADMIN_STATE, pse_admin_state),
+	NLATTR_DESC_U32_ENUM(ETHTOOL_A_PODL_PSE_ADMIN_CONTROL, pse_admin_state),
+	NLATTR_DESC_U32_ENUM(ETHTOOL_A_PODL_PSE_PW_D_STATUS, pse_pw_d_status),
+};
+
+const struct pretty_nlmsg_desc ethnl_umsg_desc[] = {
+	NLMSG_DESC_INVALID(ETHTOOL_MSG_USER_NONE),
+	NLMSG_DESC(ETHTOOL_MSG_STRSET_GET, strset),
+	NLMSG_DESC(ETHTOOL_MSG_LINKINFO_GET, linkinfo),
+	NLMSG_DESC(ETHTOOL_MSG_LINKINFO_SET, linkinfo),
+	NLMSG_DESC(ETHTOOL_MSG_LINKMODES_GET, linkmodes),
+	NLMSG_DESC(ETHTOOL_MSG_LINKMODES_SET, linkmodes),
+	NLMSG_DESC(ETHTOOL_MSG_LINKSTATE_GET, linkstate),
+	NLMSG_DESC(ETHTOOL_MSG_DEBUG_GET, debug),
+	NLMSG_DESC(ETHTOOL_MSG_DEBUG_SET, debug),
+	NLMSG_DESC(ETHTOOL_MSG_WOL_GET, wol),
+	NLMSG_DESC(ETHTOOL_MSG_WOL_SET, wol),
+	NLMSG_DESC(ETHTOOL_MSG_FEATURES_GET, features),
+	NLMSG_DESC(ETHTOOL_MSG_FEATURES_SET, features),
+	NLMSG_DESC(ETHTOOL_MSG_PRIVFLAGS_GET, privflags),
+	NLMSG_DESC(ETHTOOL_MSG_PRIVFLAGS_SET, privflags),
+	NLMSG_DESC(ETHTOOL_MSG_RINGS_GET, rings),
+	NLMSG_DESC(ETHTOOL_MSG_RINGS_SET, rings),
+	NLMSG_DESC(ETHTOOL_MSG_CHANNELS_GET, channels),
+	NLMSG_DESC(ETHTOOL_MSG_CHANNELS_SET, channels),
+	NLMSG_DESC(ETHTOOL_MSG_COALESCE_GET, coalesce),
+	NLMSG_DESC(ETHTOOL_MSG_COALESCE_SET, coalesce),
+	NLMSG_DESC(ETHTOOL_MSG_PAUSE_GET, pause),
+	NLMSG_DESC(ETHTOOL_MSG_PAUSE_SET, pause),
+	NLMSG_DESC(ETHTOOL_MSG_EEE_GET, eee),
+	NLMSG_DESC(ETHTOOL_MSG_EEE_SET, eee),
+	NLMSG_DESC(ETHTOOL_MSG_TSINFO_GET, tsinfo),
+	NLMSG_DESC(ETHTOOL_MSG_CABLE_TEST_ACT, cable_test),
+	NLMSG_DESC(ETHTOOL_MSG_CABLE_TEST_TDR_ACT, cable_test_tdr),
+	NLMSG_DESC(ETHTOOL_MSG_TUNNEL_INFO_GET, tunnel_info),
+	NLMSG_DESC(ETHTOOL_MSG_FEC_GET, fec),
+	NLMSG_DESC(ETHTOOL_MSG_FEC_SET, fec),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_EEPROM_GET, module_eeprom),
+	NLMSG_DESC(ETHTOOL_MSG_STATS_GET, stats),
+	NLMSG_DESC(ETHTOOL_MSG_PHC_VCLOCKS_GET, phc_vclocks),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_GET, module),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_SET, module),
+	NLMSG_DESC(ETHTOOL_MSG_PSE_GET, pse),
+	NLMSG_DESC(ETHTOOL_MSG_PSE_SET, pse),
+};
+
+const unsigned int ethnl_umsg_n_desc = ARRAY_SIZE(ethnl_umsg_desc);
+
+const struct pretty_nlmsg_desc ethnl_kmsg_desc[] = {
+	NLMSG_DESC_INVALID(ETHTOOL_MSG_KERNEL_NONE),
+	NLMSG_DESC(ETHTOOL_MSG_STRSET_GET_REPLY, strset),
+	NLMSG_DESC(ETHTOOL_MSG_LINKINFO_GET_REPLY, linkinfo),
+	NLMSG_DESC(ETHTOOL_MSG_LINKINFO_NTF, linkinfo),
+	NLMSG_DESC(ETHTOOL_MSG_LINKMODES_GET_REPLY, linkmodes),
+	NLMSG_DESC(ETHTOOL_MSG_LINKMODES_NTF, linkmodes),
+	NLMSG_DESC(ETHTOOL_MSG_LINKSTATE_GET_REPLY, linkstate),
+	NLMSG_DESC(ETHTOOL_MSG_DEBUG_GET_REPLY, debug),
+	NLMSG_DESC(ETHTOOL_MSG_DEBUG_NTF, debug),
+	NLMSG_DESC(ETHTOOL_MSG_WOL_GET_REPLY, wol),
+	NLMSG_DESC(ETHTOOL_MSG_WOL_NTF, wol),
+	NLMSG_DESC(ETHTOOL_MSG_FEATURES_GET_REPLY, features),
+	NLMSG_DESC(ETHTOOL_MSG_FEATURES_SET_REPLY, features),
+	NLMSG_DESC(ETHTOOL_MSG_FEATURES_NTF, features),
+	NLMSG_DESC(ETHTOOL_MSG_PRIVFLAGS_GET_REPLY, privflags),
+	NLMSG_DESC(ETHTOOL_MSG_PRIVFLAGS_NTF, privflags),
+	NLMSG_DESC(ETHTOOL_MSG_RINGS_GET_REPLY, rings),
+	NLMSG_DESC(ETHTOOL_MSG_RINGS_NTF, rings),
+	NLMSG_DESC(ETHTOOL_MSG_CHANNELS_GET_REPLY, channels),
+	NLMSG_DESC(ETHTOOL_MSG_CHANNELS_NTF, channels),
+	NLMSG_DESC(ETHTOOL_MSG_COALESCE_GET_REPLY, coalesce),
+	NLMSG_DESC(ETHTOOL_MSG_COALESCE_NTF, coalesce),
+	NLMSG_DESC(ETHTOOL_MSG_PAUSE_GET_REPLY, pause),
+	NLMSG_DESC(ETHTOOL_MSG_PAUSE_NTF, pause),
+	NLMSG_DESC(ETHTOOL_MSG_EEE_GET_REPLY, eee),
+	NLMSG_DESC(ETHTOOL_MSG_EEE_NTF, eee),
+	NLMSG_DESC(ETHTOOL_MSG_TSINFO_GET_REPLY, tsinfo),
+	NLMSG_DESC(ETHTOOL_MSG_CABLE_TEST_NTF, cable_test_ntf),
+	NLMSG_DESC(ETHTOOL_MSG_CABLE_TEST_TDR_NTF, cable_test_tdr_ntf),
+	NLMSG_DESC(ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY, tunnel_info),
+	NLMSG_DESC(ETHTOOL_MSG_FEC_GET_REPLY, fec),
+	NLMSG_DESC(ETHTOOL_MSG_FEC_NTF, fec),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY, module_eeprom),
+	NLMSG_DESC(ETHTOOL_MSG_STATS_GET_REPLY, stats),
+	NLMSG_DESC(ETHTOOL_MSG_PHC_VCLOCKS_GET_REPLY, phc_vclocks),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_GET_REPLY, module),
+	NLMSG_DESC(ETHTOOL_MSG_MODULE_NTF, module),
+	NLMSG_DESC(ETHTOOL_MSG_PSE_GET_REPLY, pse),
+};
+
+const unsigned int ethnl_kmsg_n_desc = ARRAY_SIZE(ethnl_kmsg_desc);
diff --git a/netlink/desc-genlctrl.c b/netlink/desc-genlctrl.c
new file mode 100644
index 0000000..43b41ab
--- /dev/null
+++ b/netlink/desc-genlctrl.c
@@ -0,0 +1,113 @@
+/*
+ * desc-genlctrl.c - genetlink control format descriptions
+ *
+ * Descriptions of genetlink control messages and attributes for pretty print.
+ */
+
+#include <linux/genetlink.h>
+
+#include "../internal.h"
+#include "prettymsg.h"
+
+static const struct pretty_nla_desc __attrop_desc[] = {
+	NLATTR_DESC_INVALID(CTRL_ATTR_OP_UNSPEC),
+	NLATTR_DESC_U32(CTRL_ATTR_OP_ID),
+	NLATTR_DESC_X32(CTRL_ATTR_OP_FLAGS),
+};
+
+static const struct pretty_nla_desc __attrops_desc[] = {
+	NLATTR_DESC_NESTED(0, attrop),
+};
+
+static const struct pretty_nla_desc __mcgrp_desc[] = {
+	NLATTR_DESC_INVALID(CTRL_ATTR_MCAST_GRP_UNSPEC),
+	NLATTR_DESC_STRING(CTRL_ATTR_MCAST_GRP_NAME),
+	NLATTR_DESC_U32(CTRL_ATTR_MCAST_GRP_ID),
+};
+
+static const struct pretty_nla_desc __mcgrps_desc[] = {
+	NLATTR_DESC_NESTED(0, mcgrp),
+};
+
+static const char *__policy_attr_type_names[] = {
+	[NL_ATTR_TYPE_INVALID]		= "NL_ATTR_TYPE_INVALID",
+	[NL_ATTR_TYPE_FLAG]		= "NL_ATTR_TYPE_FLAG",
+	[NL_ATTR_TYPE_U8]		= "NL_ATTR_TYPE_U8",
+	[NL_ATTR_TYPE_U16]		= "NL_ATTR_TYPE_U16",
+	[NL_ATTR_TYPE_U32]		= "NL_ATTR_TYPE_U32",
+	[NL_ATTR_TYPE_U64]		= "NL_ATTR_TYPE_U64",
+	[NL_ATTR_TYPE_S8]		= "NL_ATTR_TYPE_S8",
+	[NL_ATTR_TYPE_S16]		= "NL_ATTR_TYPE_S16",
+	[NL_ATTR_TYPE_S32]		= "NL_ATTR_TYPE_S32",
+	[NL_ATTR_TYPE_S64]		= "NL_ATTR_TYPE_S64",
+	[NL_ATTR_TYPE_BINARY]		= "NL_ATTR_TYPE_BINARY",
+	[NL_ATTR_TYPE_STRING]		= "NL_ATTR_TYPE_STRING",
+	[NL_ATTR_TYPE_NUL_STRING]	= "NL_ATTR_TYPE_NUL_STRING",
+	[NL_ATTR_TYPE_NESTED]		= "NL_ATTR_TYPE_NESTED",
+	[NL_ATTR_TYPE_NESTED_ARRAY]	= "NL_ATTR_TYPE_NESTED_ARRAY",
+	[NL_ATTR_TYPE_BITFIELD32]	= "NL_ATTR_TYPE_BITFIELD32",
+};
+
+static const struct pretty_nla_desc __policy_attr_desc[] = {
+	NLATTR_DESC_INVALID(NL_POLICY_TYPE_ATTR_UNSPEC),
+	NLATTR_DESC_U32_ENUM(NL_POLICY_TYPE_ATTR_TYPE, policy_attr_type),
+	NLATTR_DESC_S64(NL_POLICY_TYPE_ATTR_MIN_VALUE_S),
+	NLATTR_DESC_S64(NL_POLICY_TYPE_ATTR_MAX_VALUE_S),
+	NLATTR_DESC_U64(NL_POLICY_TYPE_ATTR_MIN_VALUE_U),
+	NLATTR_DESC_U64(NL_POLICY_TYPE_ATTR_MAX_VALUE_U),
+	NLATTR_DESC_U32(NL_POLICY_TYPE_ATTR_MIN_LENGTH),
+	NLATTR_DESC_U32(NL_POLICY_TYPE_ATTR_MAX_LENGTH),
+	NLATTR_DESC_U32(NL_POLICY_TYPE_ATTR_POLICY_IDX),
+	NLATTR_DESC_U32(NL_POLICY_TYPE_ATTR_POLICY_MAXTYPE),
+	NLATTR_DESC_X32(NL_POLICY_TYPE_ATTR_BITFIELD32_MASK),
+	NLATTR_DESC_X64(NL_POLICY_TYPE_ATTR_PAD),
+	NLATTR_DESC_BINARY(NL_POLICY_TYPE_ATTR_MASK),
+};
+
+static const struct pretty_nla_desc __policy_attrs_desc[] = {
+	NLATTR_DESC_NESTED(0, policy_attr),
+};
+
+static const struct pretty_nla_desc __policies_desc[] = {
+	NLATTR_DESC_ARRAY(0, policy_attrs),
+};
+
+static const struct pretty_nla_desc __op_policy_desc[] = {
+	NLATTR_DESC_INVALID(CTRL_ATTR_POLICY_UNSPEC),
+	NLATTR_DESC_U32(CTRL_ATTR_POLICY_DO),
+	NLATTR_DESC_U32(CTRL_ATTR_POLICY_DUMP),
+};
+
+static const struct pretty_nla_desc __op_policies_desc[] = {
+	NLATTR_DESC_NESTED(0, op_policy),
+};
+
+static const struct pretty_nla_desc __attr_desc[] = {
+	NLATTR_DESC_INVALID(CTRL_ATTR_UNSPEC),
+	NLATTR_DESC_U16(CTRL_ATTR_FAMILY_ID),
+	NLATTR_DESC_STRING(CTRL_ATTR_FAMILY_NAME),
+	NLATTR_DESC_U32(CTRL_ATTR_VERSION),
+	NLATTR_DESC_U32(CTRL_ATTR_HDRSIZE),
+	NLATTR_DESC_U32(CTRL_ATTR_MAXATTR),
+	NLATTR_DESC_ARRAY(CTRL_ATTR_OPS, attrops),
+	NLATTR_DESC_ARRAY(CTRL_ATTR_MCAST_GROUPS, mcgrps),
+	NLATTR_DESC_ARRAY(CTRL_ATTR_POLICY, policies),
+	NLATTR_DESC_ARRAY(CTRL_ATTR_OP_POLICY, op_policies),
+	NLATTR_DESC_U32(CTRL_ATTR_OP),
+};
+
+const struct pretty_nlmsg_desc genlctrl_msg_desc[] = {
+	NLMSG_DESC_INVALID(CTRL_CMD_UNSPEC),
+	NLMSG_DESC(CTRL_CMD_NEWFAMILY, attr),
+	NLMSG_DESC(CTRL_CMD_DELFAMILY, attr),
+	NLMSG_DESC(CTRL_CMD_GETFAMILY, attr),
+	NLMSG_DESC(CTRL_CMD_NEWOPS, attr),
+	NLMSG_DESC(CTRL_CMD_DELOPS, attr),
+	NLMSG_DESC(CTRL_CMD_GETOPS, attr),
+	NLMSG_DESC(CTRL_CMD_NEWMCAST_GRP, attr),
+	NLMSG_DESC(CTRL_CMD_DELMCAST_GRP, attr),
+	NLMSG_DESC(CTRL_CMD_GETMCAST_GRP, attr),
+	NLMSG_DESC(CTRL_CMD_GETPOLICY, attr),
+};
+
+const unsigned int genlctrl_msg_n_desc = ARRAY_SIZE(genlctrl_msg_desc);
diff --git a/netlink/desc-rtnl.c b/netlink/desc-rtnl.c
new file mode 100644
index 0000000..e15e6f0
--- /dev/null
+++ b/netlink/desc-rtnl.c
@@ -0,0 +1,96 @@
+/*
+ * desc-rtnl.c - rtnetlink message descriptions
+ *
+ * Descriptions of rtnetlink messages and attributes for pretty print.
+ */
+
+#include <linux/rtnetlink.h>
+
+#include "../internal.h"
+#include "prettymsg.h"
+
+static const struct pretty_nla_desc __link_desc[] = {
+	NLATTR_DESC_INVALID(IFLA_UNSPEC),
+	NLATTR_DESC_BINARY(IFLA_ADDRESS),
+	NLATTR_DESC_BINARY(IFLA_BROADCAST),
+	NLATTR_DESC_STRING(IFLA_IFNAME),
+	NLATTR_DESC_U32(IFLA_MTU),
+	NLATTR_DESC_U32(IFLA_LINK),
+	NLATTR_DESC_STRING(IFLA_QDISC),
+	NLATTR_DESC_BINARY(IFLA_STATS),
+	NLATTR_DESC_INVALID(IFLA_COST),
+	NLATTR_DESC_INVALID(IFLA_PRIORITY),
+	NLATTR_DESC_U32(IFLA_MASTER),
+	NLATTR_DESC_BINARY(IFLA_WIRELESS),
+	NLATTR_DESC_NESTED_NODESC(IFLA_PROTINFO),
+	NLATTR_DESC_U32(IFLA_TXQLEN),
+	NLATTR_DESC_BINARY(IFLA_MAP),
+	NLATTR_DESC_U32(IFLA_WEIGHT),
+	NLATTR_DESC_U8(IFLA_OPERSTATE),
+	NLATTR_DESC_U8(IFLA_LINKMODE),
+	NLATTR_DESC_NESTED_NODESC(IFLA_LINKINFO),
+	NLATTR_DESC_U32(IFLA_NET_NS_PID),
+	NLATTR_DESC_STRING(IFLA_IFALIAS),
+	NLATTR_DESC_U32(IFLA_NUM_VF),
+	NLATTR_DESC_NESTED_NODESC(IFLA_VFINFO_LIST),
+	NLATTR_DESC_BINARY(IFLA_STATS64),
+	NLATTR_DESC_NESTED_NODESC(IFLA_VF_PORTS),
+	NLATTR_DESC_NESTED_NODESC(IFLA_PORT_SELF),
+	NLATTR_DESC_NESTED_NODESC(IFLA_AF_SPEC),
+	NLATTR_DESC_U32(IFLA_GROUP),
+	NLATTR_DESC_U32(IFLA_NET_NS_FD),
+	NLATTR_DESC_U32(IFLA_EXT_MASK),
+	NLATTR_DESC_U32(IFLA_PROMISCUITY),
+	NLATTR_DESC_U32(IFLA_NUM_TX_QUEUES),
+	NLATTR_DESC_U32(IFLA_NUM_RX_QUEUES),
+	NLATTR_DESC_U8(IFLA_CARRIER),
+	NLATTR_DESC_BINARY(IFLA_PHYS_PORT_ID),
+	NLATTR_DESC_U32(IFLA_CARRIER_CHANGES),
+	NLATTR_DESC_BINARY(IFLA_PHYS_SWITCH_ID),
+	NLATTR_DESC_S32(IFLA_LINK_NETNSID),
+	NLATTR_DESC_STRING(IFLA_PHYS_PORT_NAME),
+	NLATTR_DESC_U8(IFLA_PROTO_DOWN),
+	NLATTR_DESC_U32(IFLA_GSO_MAX_SEGS),
+	NLATTR_DESC_U32(IFLA_GSO_MAX_SIZE),
+	NLATTR_DESC_BINARY(IFLA_PAD),
+	NLATTR_DESC_U32(IFLA_XDP),
+	NLATTR_DESC_U32(IFLA_EVENT),
+	NLATTR_DESC_S32(IFLA_NEW_NETNSID),
+	NLATTR_DESC_S32(IFLA_IF_NETNSID),
+	NLATTR_DESC_U32(IFLA_CARRIER_UP_COUNT),
+	NLATTR_DESC_U32(IFLA_CARRIER_DOWN_COUNT),
+	NLATTR_DESC_S32(IFLA_NEW_IFINDEX),
+	NLATTR_DESC_U32(IFLA_MIN_MTU),
+	NLATTR_DESC_U32(IFLA_MAX_MTU),
+	NLATTR_DESC_NESTED_NODESC(IFLA_PROP_LIST),
+	NLATTR_DESC_STRING(IFLA_ALT_IFNAME),
+	NLATTR_DESC_BINARY(IFLA_PERM_ADDRESS),
+};
+
+const struct pretty_nlmsg_desc rtnl_msg_desc[] = {
+	NLMSG_DESC(RTM_NEWLINK, link),
+	NLMSG_DESC(RTM_DELLINK, link),
+	NLMSG_DESC(RTM_GETLINK, link),
+	NLMSG_DESC(RTM_SETLINK, link),
+};
+
+const unsigned int rtnl_msg_n_desc = ARRAY_SIZE(rtnl_msg_desc);
+
+#define RTNL_MSGHDR_LEN(_name, _struct) \
+	[((RTM_ ## _name) - RTM_BASE) / 4] = sizeof(struct _struct)
+#define RTNL_MSGHDR_NOLEN(_name) \
+	[((RTM_ ## _name) - RTM_BASE) / 4] = USHRT_MAX
+
+const unsigned short rtnl_msghdr_lengths[] = {
+	RTNL_MSGHDR_LEN(NEWLINK, ifinfomsg),
+	RTNL_MSGHDR_LEN(NEWADDR, ifaddrmsg),
+	RTNL_MSGHDR_LEN(NEWROUTE, rtmsg),
+	RTNL_MSGHDR_LEN(NEWNEIGH, ndmsg),
+	RTNL_MSGHDR_LEN(NEWRULE, rtmsg),
+	RTNL_MSGHDR_LEN(NEWQDISC, tcmsg),
+	RTNL_MSGHDR_LEN(NEWTCLASS, tcmsg),
+	RTNL_MSGHDR_LEN(NEWTFILTER, tcmsg),
+	RTNL_MSGHDR_LEN(NEWACTION, tcamsg),
+};
+
+const unsigned int rtnl_msghdr_n_len = ARRAY_SIZE(rtnl_msghdr_lengths);
diff --git a/netlink/eee.c b/netlink/eee.c
new file mode 100644
index 0000000..04d8f0b
--- /dev/null
+++ b/netlink/eee.c
@@ -0,0 +1,189 @@
+/*
+ * eee.c - netlink implementation of eee commands
+ *
+ * Implementation of "ethtool --show-eee <dev>" and
+ * "ethtool --set-eee <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* EEE_GET */
+
+int eee_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_EEE_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	bool enabled, active, tx_lpi_enabled;
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_EEE_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (!tb[ETHTOOL_A_EEE_MODES_OURS] ||
+	    !tb[ETHTOOL_A_EEE_ACTIVE] || !tb[ETHTOOL_A_EEE_ENABLED] ||
+	    !tb[ETHTOOL_A_EEE_TX_LPI_ENABLED] ||
+	    !tb[ETHTOOL_A_EEE_TX_LPI_TIMER]) {
+		fprintf(stderr, "Malformed response from kernel\n");
+		return err_ret;
+	}
+	active = mnl_attr_get_u8(tb[ETHTOOL_A_EEE_ACTIVE]);
+	enabled = mnl_attr_get_u8(tb[ETHTOOL_A_EEE_ENABLED]);
+	tx_lpi_enabled = mnl_attr_get_u8(tb[ETHTOOL_A_EEE_TX_LPI_ENABLED]);
+
+	if (silent)
+		putchar('\n');
+	printf("EEE settings for %s:\n", nlctx->devname);
+	printf("\tEEE status: ");
+	if (bitset_is_empty(tb[ETHTOOL_A_EEE_MODES_OURS], true, &ret)) {
+		printf("not supported\n");
+		return MNL_CB_OK;
+	}
+	if (!enabled)
+		printf("disabled\n");
+	else
+		printf("enabled - %s\n", active ? "active" : "inactive");
+	printf("\tTx LPI: ");
+	if (tx_lpi_enabled)
+		printf("%u (us)\n",
+		       mnl_attr_get_u32(tb[ETHTOOL_A_EEE_TX_LPI_TIMER]));
+	else
+		printf("disabled\n");
+
+	ret = dump_link_modes(nlctx, tb[ETHTOOL_A_EEE_MODES_OURS], true,
+			      LM_CLASS_REAL,
+			      "Supported EEE link modes:  ", NULL, "\n",
+			      "Not reported");
+	if (ret < 0)
+		return err_ret;
+	ret = dump_link_modes(nlctx, tb[ETHTOOL_A_EEE_MODES_OURS], false,
+			      LM_CLASS_REAL,
+			      "Advertised EEE link modes:  ", NULL, "\n",
+			      "Not reported");
+	if (ret < 0)
+		return err_ret;
+	ret = dump_link_modes(nlctx, tb[ETHTOOL_A_EEE_MODES_PEER], false,
+			      LM_CLASS_REAL,
+			      "Link partner advertised EEE link modes:  ", NULL,
+			      "\n", "Not reported");
+	if (ret < 0)
+		return err_ret;
+
+	return MNL_CB_OK;
+}
+
+int nl_geee(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_EEE_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_EEE_GET,
+				      ETHTOOL_A_EEE_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, eee_reply_cb);
+}
+
+/* EEE_SET */
+
+static const struct bitset_parser_data advertise_parser_data = {
+	.no_mask	= false,
+	.force_hex	= true,
+};
+
+static const struct param_parser seee_params[] = {
+	{
+		.arg		= "advertise",
+		.type		= ETHTOOL_A_EEE_MODES_OURS,
+		.handler	= nl_parse_bitset,
+		.handler_data	= &advertise_parser_data,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-lpi",
+		.type		= ETHTOOL_A_EEE_TX_LPI_ENABLED,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx-timer",
+		.type		= ETHTOOL_A_EEE_TX_LPI_TIMER,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "eee",
+		.type		= ETHTOOL_A_EEE_ENABLED,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_seee(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_EEE_SET, false))
+		return -EOPNOTSUPP;
+	if (!ctx->argc) {
+		fprintf(stderr, "ethtool (--set-eee): parameters missing\n");
+		return 1;
+	}
+
+	nlctx->cmd = "--set-eee";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_EEE_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_EEE_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, seee_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 76;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 76;
+}
diff --git a/netlink/extapi.h b/netlink/extapi.h
new file mode 100644
index 0000000..1bb580a
--- /dev/null
+++ b/netlink/extapi.h
@@ -0,0 +1,120 @@
+/*
+ * extapi.h - external interface of netlink code
+ *
+ * Declarations needed by non-netlink code (mostly ethtool.c).
+ */
+
+#ifndef ETHTOOL_EXTAPI_H__
+#define ETHTOOL_EXTAPI_H__
+
+struct cmd_context;
+struct nl_context;
+
+typedef int (*nl_func_t)(struct cmd_context *);
+typedef bool (*nl_chk_t)(struct cmd_context *);
+
+#ifdef ETHTOOL_ENABLE_NETLINK
+
+void netlink_run_handler(struct cmd_context *ctx, nl_chk_t nlchk,
+			 nl_func_t nlfunc, bool no_fallback);
+
+int nl_gset(struct cmd_context *ctx);
+int nl_sset(struct cmd_context *ctx);
+int nl_permaddr(struct cmd_context *ctx);
+int nl_gfeatures(struct cmd_context *ctx);
+int nl_sfeatures(struct cmd_context *ctx);
+int nl_gprivflags(struct cmd_context *ctx);
+int nl_sprivflags(struct cmd_context *ctx);
+int nl_gring(struct cmd_context *ctx);
+int nl_sring(struct cmd_context *ctx);
+int nl_gchannels(struct cmd_context *ctx);
+int nl_schannels(struct cmd_context *ctx);
+int nl_gcoalesce(struct cmd_context *ctx);
+int nl_scoalesce(struct cmd_context *ctx);
+int nl_gpause(struct cmd_context *ctx);
+int nl_spause(struct cmd_context *ctx);
+int nl_geee(struct cmd_context *ctx);
+int nl_seee(struct cmd_context *ctx);
+int nl_tsinfo(struct cmd_context *ctx);
+int nl_cable_test(struct cmd_context *ctx);
+int nl_cable_test_tdr(struct cmd_context *ctx);
+int nl_gtunnels(struct cmd_context *ctx);
+int nl_gfec(struct cmd_context *ctx);
+int nl_sfec(struct cmd_context *ctx);
+bool nl_gstats_chk(struct cmd_context *ctx);
+int nl_gstats(struct cmd_context *ctx);
+int nl_gmodule(struct cmd_context *ctx);
+int nl_smodule(struct cmd_context *ctx);
+int nl_monitor(struct cmd_context *ctx);
+int nl_getmodule(struct cmd_context *ctx);
+
+void nl_monitor_usage(void);
+
+int nl_get_eeprom_page(struct cmd_context *ctx,
+		       struct ethtool_module_eeprom *request);
+
+#else /* ETHTOOL_ENABLE_NETLINK */
+
+static inline void netlink_run_handler(struct cmd_context *ctx __maybe_unused,
+				       nl_chk_t nlchk __maybe_unused,
+				       nl_func_t nlfunc __maybe_unused,
+				       bool no_fallback)
+{
+	if (no_fallback) {
+		fprintf(stderr,
+			"Command requires kernel netlink support which is not "
+			"enabled in this ethtool binary\n");
+		exit(1);
+	}
+}
+
+static inline int nl_monitor(struct cmd_context *ctx __maybe_unused)
+{
+	fprintf(stderr, "Netlink not supported by ethtool, option --monitor unsupported.\n");
+	return -EOPNOTSUPP;
+}
+
+static inline void nl_monitor_usage(void)
+{
+}
+
+static inline int
+nl_get_eeprom_page(struct cmd_context *ctx __maybe_unused,
+		   struct ethtool_module_eeprom *request __maybe_unused)
+{
+	fprintf(stderr, "Netlink not supported by ethtool.\n");
+	return -EOPNOTSUPP;
+}
+
+#define nl_gset			NULL
+#define nl_sset			NULL
+#define nl_permaddr		NULL
+#define nl_gfeatures		NULL
+#define nl_sfeatures		NULL
+#define nl_gprivflags		NULL
+#define nl_sprivflags		NULL
+#define nl_gring		NULL
+#define nl_sring		NULL
+#define nl_gchannels		NULL
+#define nl_schannels		NULL
+#define nl_gcoalesce		NULL
+#define nl_scoalesce		NULL
+#define nl_gpause		NULL
+#define nl_spause		NULL
+#define nl_geee			NULL
+#define nl_seee			NULL
+#define nl_tsinfo		NULL
+#define nl_cable_test		NULL
+#define nl_cable_test_tdr	NULL
+#define nl_gtunnels		NULL
+#define nl_gfec			NULL
+#define nl_sfec			NULL
+#define nl_gstats_chk		NULL
+#define nl_gstats		NULL
+#define nl_getmodule		NULL
+#define nl_gmodule		NULL
+#define nl_smodule		NULL
+
+#endif /* ETHTOOL_ENABLE_NETLINK */
+
+#endif /* ETHTOOL_EXTAPI_H__ */
diff --git a/netlink/features.c b/netlink/features.c
new file mode 100644
index 0000000..a4dae8f
--- /dev/null
+++ b/netlink/features.c
@@ -0,0 +1,557 @@
+/*
+ * features.c - netlink implementation of netdev features commands
+ *
+ * Implementation of "ethtool -k <dev>".
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "strset.h"
+#include "bitset.h"
+
+/* FEATURES_GET */
+
+struct feature_results {
+	uint32_t	*hw;
+	uint32_t	*wanted;
+	uint32_t	*active;
+	uint32_t	*nochange;
+	unsigned int	count;
+	unsigned int	words;
+};
+
+static int prepare_feature_results(const struct nlattr *const *tb,
+				   struct feature_results *dest)
+{
+	unsigned int count;
+	int ret;
+
+	memset(dest, '\0', sizeof(*dest));
+	if (!tb[ETHTOOL_A_FEATURES_HW] || !tb[ETHTOOL_A_FEATURES_WANTED] ||
+	    !tb[ETHTOOL_A_FEATURES_ACTIVE] || !tb[ETHTOOL_A_FEATURES_NOCHANGE])
+		return -EFAULT;
+	count = bitset_get_count(tb[ETHTOOL_A_FEATURES_HW], &ret);
+	if (ret < 0)
+		return -EFAULT;
+	if ((bitset_get_count(tb[ETHTOOL_A_FEATURES_WANTED], &ret) != count) ||
+	    (bitset_get_count(tb[ETHTOOL_A_FEATURES_ACTIVE], &ret) != count) ||
+	    (bitset_get_count(tb[ETHTOOL_A_FEATURES_NOCHANGE], &ret) != count))
+		return -EFAULT;
+	dest->hw = get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_HW]);
+	dest->wanted = get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_WANTED]);
+	dest->active = get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_ACTIVE]);
+	dest->nochange =
+		get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_NOCHANGE]);
+	if (!dest->hw || !dest->wanted || !dest->active || !dest->nochange)
+		return -EFAULT;
+	dest->count = count;
+	dest->words = (count + 31) / 32;
+
+	return 0;
+}
+
+static bool feature_on(const uint32_t *bitmap, unsigned int idx)
+{
+	return bitmap[idx / 32] & (1 << (idx % 32));
+}
+
+static void dump_feature(const struct feature_results *results,
+			 const uint32_t *ref, const uint32_t *ref_mask,
+			 unsigned int idx, const char *name, const char *prefix)
+{
+	const char *suffix = "";
+
+	if (!name || !*name)
+		return;
+	if (ref) {
+		if (ref_mask && !feature_on(ref_mask, idx))
+			return;
+		if ((!ref_mask || feature_on(ref_mask, idx)) &&
+		    (feature_on(results->active, idx) == feature_on(ref, idx)))
+			return;
+	}
+
+	if (!feature_on(results->hw, idx) || feature_on(results->nochange, idx))
+		suffix = " [fixed]";
+	else if (feature_on(results->active, idx) !=
+		 feature_on(results->wanted, idx))
+		suffix = feature_on(results->wanted, idx) ?
+			" [requested on]" : " [requested off]";
+	if (is_json_context()) {
+		open_json_object(name);
+		print_bool(PRINT_JSON, "active", NULL, feature_on(results->active, idx));
+		print_bool(PRINT_JSON, "fixed", NULL,
+			   (!feature_on(results->hw, idx) || feature_on(results->nochange, idx)));
+		print_bool(PRINT_JSON, "requested", NULL, feature_on(results->wanted, idx));
+		close_json_object();
+	} else {
+		printf("%s%s: %s%s\n", prefix, name,
+		       feature_on(results->active, idx) ? "on" : "off", suffix);
+	}
+}
+
+/* this assumes pattern contains no more than one asterisk */
+static bool flag_pattern_match(const char *name, const char *pattern)
+{
+	const char *p_ast = strchr(pattern, '*');
+
+	if (p_ast) {
+		size_t name_len = strlen(name);
+		size_t pattern_len = strlen(pattern);
+
+		if (name_len + 1 < pattern_len)
+			return false;
+		if (strncmp(name, pattern, p_ast - pattern))
+			return false;
+		pattern_len -= (p_ast - pattern) + 1;
+		name += name_len  - pattern_len;
+		pattern = p_ast + 1;
+	}
+	return !strcmp(name, pattern);
+}
+
+int dump_features(const struct nlattr *const *tb,
+		  const struct stringset *feature_names)
+{
+	unsigned int *feature_flags = NULL;
+	struct feature_results results;
+	unsigned int i, j;
+	int ret;
+
+	ret = prepare_feature_results(tb, &results);
+	if (ret < 0)
+		return -EFAULT;
+	feature_flags = calloc(results.count, sizeof(feature_flags[0]));
+	if (!feature_flags)
+		return -ENOMEM;
+
+	/* map netdev features to legacy flags */
+	for (i = 0; i < results.count; i++) {
+		const char *name = get_string(feature_names, i);
+		feature_flags[i] = UINT_MAX;
+
+		if (!name || !*name)
+			continue;
+		for (j = 0; j < OFF_FLAG_DEF_SIZE; j++) {
+			const char *flag_name = off_flag_def[j].kernel_name;
+
+			if (flag_pattern_match(name, flag_name)) {
+				feature_flags[i] = j;
+				break;
+			}
+		}
+	}
+	/* show legacy flags and their matching features first */
+	for (i = 0; i < OFF_FLAG_DEF_SIZE; i++) {
+		unsigned int n_match = 0;
+		bool flag_value = false;
+
+		/* no kernel with netlink interface supports UFO */
+		if (off_flag_def[i].value == ETH_FLAG_UFO)
+			continue;
+
+		for (j = 0; j < results.count; j++) {
+			if (feature_flags[j] == i) {
+				n_match++;
+				flag_value = flag_value ||
+					feature_on(results.active, j);
+			}
+		}
+		if (n_match != 1) {
+			if (is_json_context()) {
+				open_json_object(off_flag_def[i].long_name);
+				print_bool(PRINT_JSON, "active", NULL, flag_value);
+				print_null(PRINT_JSON, "fixed", NULL, NULL);
+				print_null(PRINT_JSON, "requested", NULL, NULL);
+				close_json_object();
+			} else {
+				printf("%s: %s\n", off_flag_def[i].long_name,
+				       flag_value ? "on" : "off");
+			}
+		}
+		if (n_match == 0)
+			continue;
+		for (j = 0; j < results.count; j++) {
+			const char *name = get_string(feature_names, j);
+
+			if (feature_flags[j] != i)
+				continue;
+			if (n_match == 1)
+				dump_feature(&results, NULL, NULL, j,
+					     off_flag_def[i].long_name, "");
+			else
+				dump_feature(&results, NULL, NULL, j, name,
+					     "\t");
+		}
+	}
+	/* and, finally, remaining netdev_features not matching legacy flags */
+	for (i = 0; i < results.count; i++) {
+		const char *name = get_string(feature_names, i);
+
+		if (!name || !*name || feature_flags[i] != UINT_MAX)
+			continue;
+		dump_feature(&results, NULL, NULL, i, name, "");
+	}
+
+	free(feature_flags);
+	return 0;
+}
+
+int features_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_FEATURES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	const struct stringset *feature_names;
+	struct nl_context *nlctx = data;
+	bool silent;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	if (!nlctx->is_monitor) {
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			return MNL_CB_ERROR;
+	}
+	feature_names = global_stringset(ETH_SS_FEATURES, nlctx->ethnl2_socket);
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return silent ? MNL_CB_OK : MNL_CB_ERROR;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_FEATURES_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (silent)
+		putchar('\n');
+	open_json_object(NULL);
+	print_string(PRINT_ANY, "ifname", "Features for %s:\n", nlctx->devname);
+	ret = dump_features(tb, feature_names);
+	close_json_object();
+	return (silent || !ret) ? MNL_CB_OK : MNL_CB_ERROR;
+}
+
+int nl_gfeatures(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_FEATURES_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_FEATURES_GET,
+				      ETHTOOL_A_FEATURES_HEADER,
+				      ETHTOOL_FLAG_COMPACT_BITSETS);
+	if (ret < 0)
+		return ret;
+
+	new_json_obj(ctx->json);
+	ret = nlsock_send_get_request(nlsk, features_reply_cb);
+	delete_json_obj();
+
+	return ret;
+}
+
+/* FEATURES_SET */
+
+struct sfeatures_context {
+	bool			nothing_changed;
+	uint32_t		req_mask[0];
+};
+
+static int find_feature(const char *name,
+			const struct stringset *feature_names)
+{
+	const unsigned int count = get_count(feature_names);
+	unsigned int i;
+
+	for (i = 0; i < count; i++)
+		if (!strcmp(name, get_string(feature_names, i)))
+			return i;
+
+	return -1;
+}
+
+static int fill_feature(struct nl_msg_buff *msgbuff, const char *name, bool val)
+{
+	struct nlattr *bit_attr;
+
+	bit_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_BITSET_BITS_BIT);
+	if (!bit_attr)
+		return -EMSGSIZE;
+	if (ethnla_put_strz(msgbuff, ETHTOOL_A_BITSET_BIT_NAME, name))
+		return -EMSGSIZE;
+	if (ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_BIT_VALUE, val))
+		return -EMSGSIZE;
+	mnl_attr_nest_end(msgbuff->nlhdr, bit_attr);
+
+	return 0;
+}
+
+static void set_sf_req_mask(struct nl_context *nlctx, unsigned int idx)
+{
+	struct sfeatures_context *sfctx = nlctx->cmd_private;
+
+	sfctx->req_mask[idx / 32] |= (1 << (idx % 32));
+}
+
+static int fill_legacy_flag(struct nl_context *nlctx, const char *flag_name,
+			    const struct stringset *feature_names, bool val)
+{
+	struct nl_msg_buff *msgbuff = &nlctx->ethnl_socket->msgbuff;
+	const unsigned int count = get_count(feature_names);
+	unsigned int i, j;
+	int ret;
+
+	for (i = 0; i < OFF_FLAG_DEF_SIZE; i++) {
+		const char *pattern;
+
+		if (strcmp(flag_name, off_flag_def[i].short_name) &&
+		    strcmp(flag_name, off_flag_def[i].long_name))
+			continue;
+		pattern = off_flag_def[i].kernel_name;
+
+		for (j = 0; j < count; j++) {
+			const char *name = get_string(feature_names, j);
+
+			if (flag_pattern_match(name, pattern)) {
+				ret = fill_feature(msgbuff, name, val);
+				if (ret < 0)
+					return ret;
+				set_sf_req_mask(nlctx, j);
+			}
+		}
+
+		return 0;
+	}
+
+	return 1;
+}
+
+int fill_sfeatures_bitmap(struct nl_context *nlctx,
+			  const struct stringset *feature_names)
+{
+	struct nl_msg_buff *msgbuff = &nlctx->ethnl_socket->msgbuff;
+	struct nlattr *bitset_attr;
+	struct nlattr *bits_attr;
+	int ret;
+
+	ret = -EMSGSIZE;
+	bitset_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_FEATURES_WANTED);
+	if (!bitset_attr)
+		return ret;
+	bits_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_BITSET_BITS);
+	if (!bits_attr)
+		goto err;
+
+	while (nlctx->argc > 0) {
+		bool val;
+
+		if (!strcmp(*nlctx->argp, "--")) {
+			nlctx->argp++;
+			nlctx->argc--;
+			break;
+		}
+		ret = -EINVAL;
+		if (nlctx->argc < 2 ||
+		    (strcmp(nlctx->argp[1], "on") &&
+		     strcmp(nlctx->argp[1], "off"))) {
+			fprintf(stderr,
+				"ethtool (%s): flag '%s' for parameter '%s' is"
+				" not followed by 'on' or 'off'\n",
+				nlctx->cmd, nlctx->argp[1], nlctx->param);
+			goto err;
+		}
+
+		val = !strcmp(nlctx->argp[1], "on");
+		ret = fill_legacy_flag(nlctx, nlctx->argp[0], feature_names,
+				       val);
+		if (ret > 0) {
+			ret = fill_feature(msgbuff, nlctx->argp[0], val);
+			if (ret == 0) {
+				int idx = find_feature(nlctx->argp[0],
+						       feature_names);
+
+				if (idx >= 0)
+					set_sf_req_mask(nlctx, idx);
+			}
+		}
+		if (ret < 0)
+			goto err;
+
+		nlctx->argp += 2;
+		nlctx->argc -= 2;
+	}
+
+	ethnla_nest_end(msgbuff, bits_attr);
+	ethnla_nest_end(msgbuff, bitset_attr);
+	return 0;
+err:
+	ethnla_nest_cancel(msgbuff, bitset_attr);
+	return ret;
+}
+
+static void show_feature_changes(struct nl_context *nlctx,
+				 const struct nlattr *const *tb)
+{
+	struct sfeatures_context *sfctx = nlctx->cmd_private;
+	const struct stringset *feature_names;
+	const uint32_t *wanted_mask;
+	const uint32_t *active_mask;
+	const uint32_t *wanted_val;
+	const uint32_t *active_val;
+	unsigned int count, words;
+	unsigned int i;
+	bool diff;
+	int ret;
+
+	feature_names = global_stringset(ETH_SS_FEATURES, nlctx->ethnl_socket);
+	count = get_count(feature_names);
+	words = DIV_ROUND_UP(count, 32);
+
+	if (!tb[ETHTOOL_A_FEATURES_WANTED] || !tb[ETHTOOL_A_FEATURES_ACTIVE])
+		goto err;
+	if (bitset_get_count(tb[ETHTOOL_A_FEATURES_WANTED], &ret) != count ||
+	    ret < 0)
+		goto err;
+	if (bitset_get_count(tb[ETHTOOL_A_FEATURES_ACTIVE], &ret) != count ||
+	    ret < 0)
+		goto err;
+	wanted_val = get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_WANTED]);
+	wanted_mask = get_compact_bitset_mask(tb[ETHTOOL_A_FEATURES_WANTED]);
+	active_val = get_compact_bitset_value(tb[ETHTOOL_A_FEATURES_ACTIVE]);
+	active_mask = get_compact_bitset_mask(tb[ETHTOOL_A_FEATURES_ACTIVE]);
+	if (!wanted_val || !wanted_mask || !active_val || !active_mask)
+		goto err;
+
+	sfctx->nothing_changed = true;
+	diff = false;
+	for (i = 0; i < words; i++) {
+		if (wanted_mask[i] != sfctx->req_mask[i])
+			sfctx->nothing_changed = false;
+		if (wanted_mask[i] || (active_mask[i] & ~sfctx->req_mask[i]))
+			diff = true;
+	}
+	if (!diff)
+		return;
+
+	/* result is not exactly as requested, show differences */
+	printf("Actual changes:\n");
+	for (i = 0; i < count; i++) {
+		const char *name = get_string(feature_names, i);
+
+		if (!name)
+			continue;
+		if (!feature_on(wanted_mask, i) && !feature_on(active_mask, i))
+			continue;
+		printf("%s: ", name);
+		if (feature_on(wanted_mask, i))
+			/* we requested a value but result is different */
+			printf("%s [requested %s]",
+			       feature_on(wanted_val, i) ? "off" : "on",
+			       feature_on(wanted_val, i) ? "on" : "off");
+		else if (!feature_on(sfctx->req_mask, i))
+			/* not requested but changed anyway */
+			printf("%s [not requested]",
+			       feature_on(active_val, i) ? "on" : "off");
+		else
+			printf("%s", feature_on(active_val, i) ? "on" : "off");
+		fputc('\n', stdout);
+	}
+
+	return;
+err:
+	fprintf(stderr, "malformed diff info from kernel\n");
+}
+
+int sfeatures_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct genlmsghdr *ghdr = (const struct genlmsghdr *)(nlhdr + 1);
+	const struct nlattr *tb[ETHTOOL_A_FEATURES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	const char *devname;
+	int ret;
+
+	if (ghdr->cmd != ETHTOOL_MSG_FEATURES_SET_REPLY) {
+		fprintf(stderr, "warning: unexpected reply message type %u\n",
+			ghdr->cmd);
+		return MNL_CB_OK;
+	}
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	devname = get_dev_name(tb[ETHTOOL_A_FEATURES_HEADER]);
+	if (strcmp(devname, nlctx->devname)) {
+		fprintf(stderr, "warning: unexpected message for device %s\n",
+			devname);
+		return MNL_CB_OK;
+	}
+
+	show_feature_changes(nlctx, tb);
+	return MNL_CB_OK;
+}
+
+int nl_sfeatures(struct cmd_context *ctx)
+{
+	const struct stringset *feature_names;
+	struct nl_context *nlctx = ctx->nlctx;
+	struct sfeatures_context *sfctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	unsigned int words;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_FEATURES_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-K";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->cmd_private = &sfctx;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	feature_names = global_stringset(ETH_SS_FEATURES, nlctx->ethnl_socket);
+	words = (get_count(feature_names) + 31) / 32;
+	sfctx = malloc(sizeof(*sfctx) + words * sizeof(sfctx->req_mask[0]));
+	if (!sfctx)
+		return -ENOMEM;
+	memset(sfctx, '\0',
+	       sizeof(*sfctx) + words * sizeof(sfctx->req_mask[0]));
+	nlctx->cmd_private = sfctx;
+
+	nlctx->devname = ctx->devname;
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_FEATURES_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_FEATURES_HEADER, ctx->devname,
+			       ETHTOOL_FLAG_COMPACT_BITSETS))
+		return -EMSGSIZE;
+	ret = fill_sfeatures_bitmap(nlctx, feature_names);
+	if (ret < 0)
+		return ret;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 92;
+	ret = nlsock_process_reply(nlsk, sfeatures_reply_cb, nlctx);
+	if (sfctx->nothing_changed) {
+		fprintf(stderr, "Could not change any device features\n");
+		return nlctx->exit_code ?: 1;
+	}
+	if (ret == 0)
+		return 0;
+	return nlctx->exit_code ?: 92;
+}
diff --git a/netlink/fec.c b/netlink/fec.c
new file mode 100644
index 0000000..6027dc0
--- /dev/null
+++ b/netlink/fec.c
@@ -0,0 +1,360 @@
+/*
+ * fec.c - netlink implementation of FEC commands
+ *
+ * Implementation of "ethtool --show-fec <dev>" and
+ * "ethtool --set-fec <dev> ..."
+ */
+
+#include <errno.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <string.h>
+#include <strings.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* FEC_GET */
+
+static void
+fec_mode_walk(unsigned int idx, const char *name, bool val, void *data)
+{
+	bool *empty = data;
+
+	if (!val)
+		return;
+	if (empty)
+		*empty = false;
+
+	/* Rename None to Off - in legacy ioctl None means "not supported"
+	 * rather than supported but disabled.
+	 */
+	if (idx == ETHTOOL_LINK_MODE_FEC_NONE_BIT)
+		name = "Off";
+	/* Rename to match the ioctl letter case */
+	else if (idx == ETHTOOL_LINK_MODE_FEC_BASER_BIT)
+		name = "BaseR";
+
+	print_string(PRINT_ANY, NULL, " %s", name);
+}
+
+static int fec_show_stats(const struct nlattr *nest)
+{
+	const struct nlattr *tb[ETHTOOL_A_FEC_STAT_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	static const struct {
+		unsigned int attr;
+		char *name;
+	} stats[] = {
+		{ ETHTOOL_A_FEC_STAT_CORRECTED, "corrected_blocks" },
+		{ ETHTOOL_A_FEC_STAT_UNCORR, "uncorrectable_blocks" },
+		{ ETHTOOL_A_FEC_STAT_CORR_BITS, "corrected_bits" },
+	};
+	bool header = false;
+	unsigned int i;
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+
+	open_json_object("statistics");
+	for (i = 0; i < ARRAY_SIZE(stats); i++) {
+		uint64_t *vals;
+		int lanes, l;
+
+		if (!tb[stats[i].attr] ||
+		    !mnl_attr_get_payload_len(tb[stats[i].attr]))
+			continue;
+
+		if (!header && !is_json_context()) {
+			printf("Statistics:\n");
+			header = true;
+		}
+
+		if (mnl_attr_get_payload_len(tb[stats[i].attr]) % 8) {
+			fprintf(stderr, "malformed netlink message (statistic)\n");
+			goto err_close_stats;
+		}
+
+		vals = mnl_attr_get_payload(tb[stats[i].attr]);
+		lanes = mnl_attr_get_payload_len(tb[stats[i].attr]) / 8 - 1;
+
+		if (!is_json_context()) {
+			fprintf(stdout, "  %s: %" PRIu64 "\n",
+				stats[i].name, *vals++);
+		} else {
+			open_json_object(stats[i].name);
+			print_u64(PRINT_JSON, "total", NULL, *vals++);
+		}
+
+		if (lanes)
+			open_json_array("lanes", "");
+		for (l = 0; l < lanes; l++) {
+			if (!is_json_context())
+				fprintf(stdout, "    Lane %d: %" PRIu64 "\n",
+					l, *vals++);
+			else
+				print_u64(PRINT_JSON, NULL, NULL, *vals++);
+		}
+		if (lanes)
+			close_json_array("");
+
+		close_json_object();
+	}
+	close_json_object();
+
+	return 0;
+
+err_close_stats:
+	close_json_object();
+	return -1;
+}
+
+int fec_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_FEC_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	const struct stringset *lm_strings;
+	const char *name;
+	bool fa, empty;
+	bool silent;
+	int err_ret;
+	u32 active;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_FEC_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	ret = netlink_init_ethnl2_socket(nlctx);
+	if (ret < 0)
+		return err_ret;
+	lm_strings = global_stringset(ETH_SS_LINK_MODES, nlctx->ethnl2_socket);
+
+	active = 0;
+	if (tb[ETHTOOL_A_FEC_ACTIVE])
+		active = mnl_attr_get_u32(tb[ETHTOOL_A_FEC_ACTIVE]);
+
+	if (silent)
+		print_nl();
+
+	open_json_object(NULL);
+
+	print_string(PRINT_ANY, "ifname", "FEC parameters for %s:\n",
+		     nlctx->devname);
+
+	open_json_array("config", "Supported/Configured FEC encodings:");
+	fa = tb[ETHTOOL_A_FEC_AUTO] && mnl_attr_get_u8(tb[ETHTOOL_A_FEC_AUTO]);
+	if (fa)
+		print_string(PRINT_ANY, NULL, " %s", "Auto");
+	empty = !fa;
+
+	ret = walk_bitset(tb[ETHTOOL_A_FEC_MODES], lm_strings, fec_mode_walk,
+			  &empty);
+	if (ret < 0)
+		goto err_close_dev;
+	if (empty)
+		print_string(PRINT_ANY, NULL, " %s", "None");
+	close_json_array("\n");
+
+	open_json_array("active", "Active FEC encoding:");
+	if (active) {
+		name = get_string(lm_strings, active);
+		if (name)
+			/* Take care of renames */
+			fec_mode_walk(active, name, true, NULL);
+		else
+			print_uint(PRINT_ANY, NULL, " BIT%u", active);
+	} else {
+		print_string(PRINT_ANY, NULL, " %s", "None");
+	}
+	close_json_array("\n");
+
+	if (tb[ETHTOOL_A_FEC_STATS]) {
+		ret = fec_show_stats(tb[ETHTOOL_A_FEC_STATS]);
+		if (ret < 0)
+			goto err_close_dev;
+	}
+
+	close_json_object();
+
+	return MNL_CB_OK;
+
+err_close_dev:
+	close_json_object();
+	return err_ret;
+}
+
+int nl_gfec(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	u32 flags;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_FEC_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	flags = get_stats_flag(nlctx, ETHTOOL_MSG_FEC_GET,
+			       ETHTOOL_A_FEC_HEADER);
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_FEC_GET,
+				      ETHTOOL_A_FEC_HEADER, flags);
+	if (ret < 0)
+		return ret;
+
+	new_json_obj(ctx->json);
+	ret = nlsock_send_get_request(nlsk, fec_reply_cb);
+	delete_json_obj();
+	return ret;
+}
+
+/* FEC_SET */
+
+static void strupc(char *dst, const char *src)
+{
+	while (*src)
+		*dst++ = toupper(*src++);
+	*dst = '\0';
+}
+
+static int fec_parse_bitset(struct nl_context *nlctx, uint16_t type,
+			    const void *data __maybe_unused,
+			    struct nl_msg_buff *msgbuff, void *dest)
+{
+	struct nlattr *bitset_attr;
+	struct nlattr *bits_attr;
+	struct nlattr *bit_attr;
+	char upper[ETH_GSTRING_LEN];
+	bool fec_auto = false;
+	int ret;
+
+	if (!type || dest) {
+		fprintf(stderr, "ethtool (%s): internal error parsing '%s'\n",
+			nlctx->cmd, nlctx->param);
+		return -EFAULT;
+	}
+
+	bitset_attr = ethnla_nest_start(msgbuff, type);
+	if (!bitset_attr)
+		return -EMSGSIZE;
+	ret = -EMSGSIZE;
+	if (ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_NOMASK, true))
+		goto err;
+	bits_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_BITSET_BITS);
+	if (!bits_attr)
+		goto err;
+
+	while (nlctx->argc > 0) {
+		const char *name = *nlctx->argp;
+
+		if (!strcmp(name, "--")) {
+			nlctx->argp++;
+			nlctx->argc--;
+			break;
+		}
+
+		if (!strcasecmp(name, "auto")) {
+			fec_auto = true;
+			goto next;
+		}
+		if (!strcasecmp(name, "off")) {
+			name = "None";
+		} else {
+			strupc(upper, name);
+			name = upper;
+		}
+
+		ret = -EMSGSIZE;
+		bit_attr = ethnla_nest_start(msgbuff,
+					     ETHTOOL_A_BITSET_BITS_BIT);
+		if (!bit_attr)
+			goto err;
+		if (ethnla_put_strz(msgbuff, ETHTOOL_A_BITSET_BIT_NAME, name))
+			goto err;
+		ethnla_nest_end(msgbuff, bit_attr);
+
+next:
+		nlctx->argp++;
+		nlctx->argc--;
+	}
+
+	ethnla_nest_end(msgbuff, bits_attr);
+	ethnla_nest_end(msgbuff, bitset_attr);
+
+	if (ethnla_put_u8(msgbuff, ETHTOOL_A_FEC_AUTO, fec_auto))
+		goto err;
+
+	return 0;
+err:
+	ethnla_nest_cancel(msgbuff, bitset_attr);
+	return ret;
+}
+
+static const struct param_parser sfec_params[] = {
+	{
+		.arg		= "encoding",
+		.type		= ETHTOOL_A_FEC_MODES,
+		.handler	= fec_parse_bitset,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_sfec(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_FEC_SET, false))
+		return -EOPNOTSUPP;
+	if (!ctx->argc) {
+		fprintf(stderr, "ethtool (--set-fec): parameters missing\n");
+		return 1;
+	}
+
+	nlctx->cmd = "--set-fec";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_FEC_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_FEC_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, sfec_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 83;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 83;
+}
diff --git a/netlink/module-eeprom.c b/netlink/module-eeprom.c
new file mode 100644
index 0000000..49833a2
--- /dev/null
+++ b/netlink/module-eeprom.c
@@ -0,0 +1,305 @@
+/*
+ * module-eeprom.c - netlink implementation of module eeprom get command
+ *
+ * ethtool -m <dev>
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stddef.h>
+
+#include "../sff-common.h"
+#include "../qsfp.h"
+#include "../cmis.h"
+#include "../internal.h"
+#include "../common.h"
+#include "../list.h"
+#include "netlink.h"
+#include "parser.h"
+
+#define ETH_I2C_ADDRESS_LOW	0x50
+#define ETH_I2C_MAX_ADDRESS	0x7F
+
+struct cmd_params {
+	u8 dump_hex;
+	u8 dump_raw;
+	u32 offset;
+	u32 length;
+	u32 page;
+	u32 bank;
+	u32 i2c_address;
+};
+
+static const struct param_parser getmodule_params[] = {
+	{
+		.arg		= "hex",
+		.handler	= nl_parse_u8bool,
+		.dest_offset	= offsetof(struct cmd_params, dump_hex),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "raw",
+		.handler	= nl_parse_u8bool,
+		.dest_offset	= offsetof(struct cmd_params, dump_raw),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "offset",
+		.handler	= nl_parse_direct_u32,
+		.dest_offset	= offsetof(struct cmd_params, offset),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "length",
+		.handler	= nl_parse_direct_u32,
+		.dest_offset	= offsetof(struct cmd_params, length),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "page",
+		.handler	= nl_parse_direct_u32,
+		.dest_offset	= offsetof(struct cmd_params, page),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "bank",
+		.handler	= nl_parse_direct_u32,
+		.dest_offset	= offsetof(struct cmd_params, bank),
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "i2c",
+		.handler	= nl_parse_direct_u32,
+		.dest_offset	= offsetof(struct cmd_params, i2c_address),
+		.min_argc	= 1,
+	},
+	{}
+};
+
+static struct list_head eeprom_page_list = LIST_HEAD_INIT(eeprom_page_list);
+
+struct eeprom_page_entry {
+	struct list_head list;	/* Member of eeprom_page_list */
+	void *data;
+};
+
+static int eeprom_page_list_add(void *data)
+{
+	struct eeprom_page_entry *entry;
+
+	entry = malloc(sizeof(*entry));
+	if (!entry)
+		return -ENOMEM;
+
+	entry->data = data;
+	list_add(&entry->list, &eeprom_page_list);
+
+	return 0;
+}
+
+static void eeprom_page_list_flush(void)
+{
+	struct eeprom_page_entry *entry;
+	struct list_head *head, *next;
+
+	list_for_each_safe(head, next, &eeprom_page_list) {
+		entry = (struct eeprom_page_entry *) head;
+		free(entry->data);
+		list_del(head);
+		free(entry);
+	}
+}
+
+static int get_eeprom_page_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_MODULE_EEPROM_DATA + 1] = {};
+	struct ethtool_module_eeprom *request = data;
+	DECLARE_ATTR_TB_INFO(tb);
+	u8 *eeprom_data;
+	int ret;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+
+	if (!tb[ETHTOOL_A_MODULE_EEPROM_DATA])
+		return MNL_CB_ERROR;
+
+	eeprom_data = mnl_attr_get_payload(tb[ETHTOOL_A_MODULE_EEPROM_DATA]);
+	request->data = malloc(request->length);
+	if (!request->data)
+		return MNL_CB_ERROR;
+	memcpy(request->data, eeprom_data, request->length);
+
+	ret = eeprom_page_list_add(request->data);
+	if (ret < 0)
+		goto err_list_add;
+
+	return MNL_CB_OK;
+
+err_list_add:
+	free(request->data);
+	return MNL_CB_ERROR;
+}
+
+int nl_get_eeprom_page(struct cmd_context *ctx,
+		       struct ethtool_module_eeprom *request)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsock;
+	struct nl_msg_buff *msg;
+	int ret;
+
+	if (!request || request->i2c_address > ETH_I2C_MAX_ADDRESS)
+		return -EINVAL;
+
+	nlsock = nlctx->ethnl_socket;
+	msg = &nlsock->msgbuff;
+
+	ret = nlsock_prep_get_request(nlsock, ETHTOOL_MSG_MODULE_EEPROM_GET,
+				      ETHTOOL_A_MODULE_EEPROM_HEADER, 0);
+	if (ret < 0)
+		return ret;
+
+	if (ethnla_put_u32(msg, ETHTOOL_A_MODULE_EEPROM_LENGTH,
+			   request->length) ||
+	    ethnla_put_u32(msg, ETHTOOL_A_MODULE_EEPROM_OFFSET,
+			   request->offset) ||
+	    ethnla_put_u8(msg, ETHTOOL_A_MODULE_EEPROM_PAGE,
+			  request->page) ||
+	    ethnla_put_u8(msg, ETHTOOL_A_MODULE_EEPROM_BANK,
+			  request->bank) ||
+	    ethnla_put_u8(msg, ETHTOOL_A_MODULE_EEPROM_I2C_ADDRESS,
+			  request->i2c_address))
+		return -EMSGSIZE;
+
+	ret = nlsock_sendmsg(nlsock, NULL);
+	if (ret < 0)
+		return ret;
+	return nlsock_process_reply(nlsock, get_eeprom_page_reply_cb,
+				    (void *)request);
+}
+
+static int eeprom_dump_hex(struct cmd_context *ctx)
+{
+	struct ethtool_module_eeprom request = {
+		.length = 128,
+		.i2c_address = ETH_I2C_ADDRESS_LOW,
+	};
+	int ret;
+
+	ret = nl_get_eeprom_page(ctx, &request);
+	if (ret < 0)
+		return ret;
+
+	dump_hex(stdout, request.data, request.length, request.offset);
+
+	return 0;
+}
+
+static int eeprom_parse(struct cmd_context *ctx)
+{
+	struct ethtool_module_eeprom request = {
+		.length = 1,
+		.i2c_address = ETH_I2C_ADDRESS_LOW,
+	};
+	int ret;
+
+	/* Fetch the SFF-8024 Identifier Value. For all supported standards, it
+	 * is located at I2C address 0x50, byte 0. See section 4.1 in SFF-8024,
+	 * revision 4.9.
+	 */
+	ret = nl_get_eeprom_page(ctx, &request);
+	if (ret < 0)
+		return ret;
+
+	switch (request.data[0]) {
+#ifdef ETHTOOL_ENABLE_PRETTY_DUMP
+	case SFF8024_ID_SFP:
+		return sff8079_show_all_nl(ctx);
+	case SFF8024_ID_QSFP:
+	case SFF8024_ID_QSFP28:
+	case SFF8024_ID_QSFP_PLUS:
+		return sff8636_show_all_nl(ctx);
+	case SFF8024_ID_QSFP_DD:
+	case SFF8024_ID_OSFP:
+	case SFF8024_ID_DSFP:
+		return cmis_show_all_nl(ctx);
+#endif
+	default:
+		/* If we cannot recognize the memory map, default to dumping
+		 * the first 128 bytes in hex.
+		 */
+		return eeprom_dump_hex(ctx);
+	}
+}
+
+int nl_getmodule(struct cmd_context *ctx)
+{
+	struct cmd_params getmodule_cmd_params = {};
+	struct ethtool_module_eeprom request = {0};
+	struct nl_context *nlctx = ctx->nlctx;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_MODULE_EEPROM_GET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-m";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	ret = nl_parser(nlctx, getmodule_params, &getmodule_cmd_params, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return ret;
+
+	if (getmodule_cmd_params.dump_hex && getmodule_cmd_params.dump_raw) {
+		fprintf(stderr, "Hex and raw dump cannot be specified together\n");
+		return -EINVAL;
+	}
+
+	/* When complete hex/raw dump of the EEPROM is requested, fallback to
+	 * ioctl. Netlink can only request specific pages.
+	 */
+	if ((getmodule_cmd_params.dump_hex || getmodule_cmd_params.dump_raw) &&
+	    !getmodule_cmd_params.page && !getmodule_cmd_params.bank &&
+	    !getmodule_cmd_params.i2c_address) {
+		nlctx->ioctl_fallback = true;
+		return -EOPNOTSUPP;
+	}
+
+#ifdef ETHTOOL_ENABLE_PRETTY_DUMP
+	if (getmodule_cmd_params.page || getmodule_cmd_params.bank ||
+	    getmodule_cmd_params.offset || getmodule_cmd_params.length)
+#endif
+		getmodule_cmd_params.dump_hex = true;
+
+	request.offset = getmodule_cmd_params.offset;
+	request.length = getmodule_cmd_params.length ?: 128;
+	request.page = getmodule_cmd_params.page;
+	request.bank = getmodule_cmd_params.bank;
+	request.i2c_address = getmodule_cmd_params.i2c_address ?: ETH_I2C_ADDRESS_LOW;
+
+	if (request.page && !request.offset)
+		request.offset = 128;
+
+	if (getmodule_cmd_params.dump_hex || getmodule_cmd_params.dump_raw) {
+		ret = nl_get_eeprom_page(ctx, &request);
+		if (ret < 0)
+			goto cleanup;
+
+		if (getmodule_cmd_params.dump_raw)
+			fwrite(request.data, 1, request.length, stdout);
+		else
+			dump_hex(stdout, request.data, request.length,
+				 request.offset);
+	} else {
+		ret = eeprom_parse(ctx);
+		if (ret < 0)
+			goto cleanup;
+	}
+
+cleanup:
+	eeprom_page_list_flush();
+	return ret;
+}
diff --git a/netlink/module.c b/netlink/module.c
new file mode 100644
index 0000000..54aa6d0
--- /dev/null
+++ b/netlink/module.c
@@ -0,0 +1,179 @@
+/*
+ * module.c - netlink implementation of module commands
+ *
+ * Implementation of "ethtool --show-module <dev>" and
+ * "ethtool --set-module <dev> ..."
+ */
+
+#include <errno.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+/* MODULE_GET */
+
+static const char *module_power_mode_policy_name(u8 val)
+{
+	switch (val) {
+	case ETHTOOL_MODULE_POWER_MODE_POLICY_HIGH:
+		return "high";
+	case ETHTOOL_MODULE_POWER_MODE_POLICY_AUTO:
+		return "auto";
+	default:
+		return "unknown";
+	}
+}
+
+static const char *module_power_mode_name(u8 val)
+{
+	switch (val) {
+	case ETHTOOL_MODULE_POWER_MODE_LOW:
+		return "low";
+	case ETHTOOL_MODULE_POWER_MODE_HIGH:
+		return "high";
+	default:
+		return "unknown";
+	}
+}
+
+int module_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_MODULE_MAX + 1] = {};
+	struct nl_context *nlctx = data;
+	DECLARE_ATTR_TB_INFO(tb);
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_MODULE_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		print_nl();
+
+	open_json_object(NULL);
+
+	print_string(PRINT_ANY, "ifname", "Module parameters for %s:\n",
+		     nlctx->devname);
+
+	if (tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]) {
+		u8 val;
+
+		val = mnl_attr_get_u8(tb[ETHTOOL_A_MODULE_POWER_MODE_POLICY]);
+		print_string(PRINT_ANY, "power-mode-policy",
+			     "power-mode-policy: %s\n",
+			     module_power_mode_policy_name(val));
+	}
+
+	if (tb[ETHTOOL_A_MODULE_POWER_MODE]) {
+		u8 val;
+
+		val = mnl_attr_get_u8(tb[ETHTOOL_A_MODULE_POWER_MODE]);
+		print_string(PRINT_ANY, "power-mode",
+			     "power-mode: %s\n", module_power_mode_name(val));
+	}
+
+	close_json_object();
+
+	return MNL_CB_OK;
+}
+
+int nl_gmodule(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_MODULE_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	nlsk = nlctx->ethnl_socket;
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_MODULE_GET,
+				      ETHTOOL_A_MODULE_HEADER, 0);
+	if (ret < 0)
+		return ret;
+
+	new_json_obj(ctx->json);
+	ret = nlsock_send_get_request(nlsk, module_reply_cb);
+	delete_json_obj();
+	return ret;
+}
+
+/* MODULE_SET */
+
+static const struct lookup_entry_u8 power_mode_policy_values[] = {
+	{ .arg = "high",	.val = ETHTOOL_MODULE_POWER_MODE_POLICY_HIGH },
+	{ .arg = "auto",	.val = ETHTOOL_MODULE_POWER_MODE_POLICY_AUTO },
+	{}
+};
+
+static const struct param_parser smodule_params[] = {
+	{
+		.arg		= "power-mode-policy",
+		.type		= ETHTOOL_A_MODULE_POWER_MODE_POLICY,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= power_mode_policy_values,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_smodule(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_MODULE_SET, false))
+		return -EOPNOTSUPP;
+	if (!ctx->argc) {
+		fprintf(stderr, "ethtool (--set-module): parameters missing\n");
+		return 1;
+	}
+
+	nlctx->cmd = "--set-module";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_MODULE_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_MODULE_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, smodule_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 83;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 83;
+}
diff --git a/netlink/monitor.c b/netlink/monitor.c
new file mode 100644
index 0000000..ace9b25
--- /dev/null
+++ b/netlink/monitor.c
@@ -0,0 +1,324 @@
+/*
+ * monitor.c - netlink notification monitor
+ *
+ * Implementation of "ethtool --monitor" for watching netlink notifications.
+ */
+
+#include <errno.h>
+
+#include "../internal.h"
+#include "netlink.h"
+#include "nlsock.h"
+#include "strset.h"
+
+static struct {
+	uint8_t		cmd;
+	mnl_cb_t	cb;
+} monitor_callbacks[] = {
+	{
+		.cmd	= ETHTOOL_MSG_LINKMODES_NTF,
+		.cb	= linkmodes_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_LINKINFO_NTF,
+		.cb	= linkinfo_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_WOL_NTF,
+		.cb	= wol_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_DEBUG_NTF,
+		.cb	= debug_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_FEATURES_NTF,
+		.cb	= features_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_PRIVFLAGS_NTF,
+		.cb	= privflags_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_RINGS_NTF,
+		.cb	= rings_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_CHANNELS_NTF,
+		.cb	= channels_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_COALESCE_NTF,
+		.cb	= coalesce_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_PAUSE_NTF,
+		.cb	= pause_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_EEE_NTF,
+		.cb	= eee_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_CABLE_TEST_NTF,
+		.cb	= cable_test_ntf_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_CABLE_TEST_TDR_NTF,
+		.cb	= cable_test_tdr_ntf_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_FEC_NTF,
+		.cb	= fec_reply_cb,
+	},
+	{
+		.cmd	= ETHTOOL_MSG_MODULE_NTF,
+		.cb	= module_reply_cb,
+	},
+};
+
+static void clear_filter(struct nl_context *nlctx)
+{
+	unsigned int i;
+
+	for (i = 0; i < CMDMASK_WORDS; i++)
+		nlctx->filter_cmds[i] = 0;
+}
+
+static bool test_filter_cmd(const struct nl_context *nlctx, unsigned int cmd)
+{
+	return nlctx->filter_cmds[cmd / 32] & (1U << (cmd % 32));
+}
+
+static void set_filter_cmd(struct nl_context *nlctx, unsigned int cmd)
+{
+	nlctx->filter_cmds[cmd / 32] |= (1U << (cmd % 32));
+}
+
+static void set_filter_all(struct nl_context *nlctx)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(monitor_callbacks); i++)
+		set_filter_cmd(nlctx, monitor_callbacks[i].cmd);
+}
+
+static int monitor_any_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct genlmsghdr *ghdr = (const struct genlmsghdr *)(nlhdr + 1);
+	struct nl_context *nlctx = data;
+	unsigned int i;
+
+	if (!test_filter_cmd(nlctx, ghdr->cmd))
+		return MNL_CB_OK;
+
+	for (i = 0; i < MNL_ARRAY_SIZE(monitor_callbacks); i++)
+		if (monitor_callbacks[i].cmd == ghdr->cmd)
+			return monitor_callbacks[i].cb(nlhdr, data);
+
+	return MNL_CB_OK;
+}
+
+struct monitor_option {
+	const char	*pattern;
+	uint8_t		cmd;
+	uint32_t	info_mask;
+};
+
+static struct monitor_option monitor_opts[] = {
+	{
+		.pattern	= "|--all",
+		.cmd		= 0,
+	},
+	{
+		.pattern	= "-s|--change",
+		.cmd		= ETHTOOL_MSG_LINKINFO_NTF,
+	},
+	{
+		.pattern	= "-s|--change",
+		.cmd		= ETHTOOL_MSG_LINKMODES_NTF,
+	},
+	{
+		.pattern	= "-s|--change",
+		.cmd		= ETHTOOL_MSG_WOL_NTF,
+	},
+	{
+		.pattern	= "-s|--change",
+		.cmd		= ETHTOOL_MSG_DEBUG_NTF,
+	},
+	{
+		.pattern	= "-k|--show-features|--show-offload|-K|--features|--offload",
+		.cmd		= ETHTOOL_MSG_FEATURES_NTF,
+	},
+	{
+		.pattern	= "--show-priv-flags|--set-priv-flags",
+		.cmd		= ETHTOOL_MSG_PRIVFLAGS_NTF,
+	},
+	{
+		.pattern	= "-g|--show-ring|-G|--set-ring",
+		.cmd		= ETHTOOL_MSG_RINGS_NTF,
+	},
+	{
+		.pattern	= "-l|--show-channels|-L|--set-channels",
+		.cmd		= ETHTOOL_MSG_CHANNELS_NTF,
+	},
+	{
+		.pattern	= "-c|--show-coalesce|-C|--coalesce",
+		.cmd		= ETHTOOL_MSG_COALESCE_NTF,
+	},
+	{
+		.pattern	= "-a|--show-pause|-A|--pause",
+		.cmd		= ETHTOOL_MSG_PAUSE_NTF,
+	},
+	{
+		.pattern	= "--show-eee|--set-eee",
+		.cmd		= ETHTOOL_MSG_EEE_NTF,
+	},
+	{
+		.pattern	= "--cable-test",
+		.cmd		= ETHTOOL_MSG_CABLE_TEST_NTF,
+	},
+	{
+		.pattern	= "--cable-test-tdr",
+		.cmd		= ETHTOOL_MSG_CABLE_TEST_TDR_NTF,
+	},
+	{
+		.pattern	= "--show-module|--set-module",
+		.cmd		= ETHTOOL_MSG_MODULE_NTF,
+	},
+};
+
+static bool pattern_match(const char *s, const char *pattern)
+{
+	const char *opt = pattern;
+	const char *next;
+	int slen = strlen(s);
+	int optlen;
+
+	do {
+		next = opt;
+		while (*next && *next != '|')
+			next++;
+		optlen = next - opt;
+		if (slen == optlen && !strncmp(s, opt, optlen))
+			return true;
+
+		opt = next;
+		if (*opt == '|')
+			opt++;
+	} while (*opt);
+
+	return false;
+}
+
+static int parse_monitor(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	char **argp = ctx->argp;
+	int argc = ctx->argc;
+	const char *opt = "";
+	bool opt_found;
+	unsigned int i;
+
+	if (*argp && argp[0][0] == '-') {
+		opt = *argp;
+		argp++;
+		argc--;
+	}
+	opt_found = false;
+	clear_filter(nlctx);
+	for (i = 0; i < MNL_ARRAY_SIZE(monitor_opts); i++) {
+		if (pattern_match(opt, monitor_opts[i].pattern)) {
+			unsigned int cmd = monitor_opts[i].cmd;
+
+			if (!cmd)
+				set_filter_all(nlctx);
+			else
+				set_filter_cmd(nlctx, cmd);
+			opt_found = true;
+		}
+	}
+	if (!opt_found) {
+		fprintf(stderr, "monitoring for option '%s' not supported\n",
+			*argp);
+		return -1;
+	}
+
+	if (*argp && strcmp(*argp, WILDCARD_DEVNAME))
+		ctx->devname = *argp;
+	return 0;
+}
+
+int nl_monitor(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx;
+	struct nl_socket *nlsk;
+	uint32_t grpid;
+	bool is_dev;
+	int ret;
+
+	ret = netlink_init(ctx);
+	if (ret < 0) {
+		fprintf(stderr, "Netlink interface initialization failed, option --monitor not supported.\n");
+		return ret;
+	}
+	nlctx = ctx->nlctx;
+	nlsk = nlctx->ethnl_socket;
+	grpid = nlctx->ethnl_mongrp;
+	if (!grpid) {
+		fprintf(stderr, "multicast group 'monitor' not found\n");
+		return -EOPNOTSUPP;
+	}
+
+	if (parse_monitor(ctx) < 0)
+		return 1;
+	is_dev = ctx->devname && strcmp(ctx->devname, WILDCARD_DEVNAME);
+
+	ret = preload_global_strings(nlsk);
+	if (ret < 0)
+		return ret;
+	ret = mnl_socket_setsockopt(nlsk->sk, NETLINK_ADD_MEMBERSHIP,
+				    &grpid, sizeof(grpid));
+	if (ret < 0)
+		return ret;
+	if (is_dev) {
+		ret = preload_perdev_strings(nlsk, ctx->devname);
+		if (ret < 0)
+			goto out_strings;
+	}
+
+	nlctx->filter_devname = ctx->devname;
+	nlctx->is_monitor = true;
+	nlsk->port = 0;
+	nlsk->seq = 0;
+
+	fputs("listening...\n", stdout);
+	fflush(stdout);
+	ret = nlsock_process_reply(nlsk, monitor_any_cb, nlctx);
+
+out_strings:
+	cleanup_all_strings();
+	return ret;
+}
+
+void nl_monitor_usage(void)
+{
+	unsigned int i;
+	const char *p;
+
+	fputs("        ethtool --monitor               Show kernel notifications\n",
+	      stdout);
+	fputs("                ( [ --all ]", stdout);
+	for (i = 1; i < MNL_ARRAY_SIZE(monitor_opts); i++) {
+		if (!strcmp(monitor_opts[i].pattern, monitor_opts[i - 1].pattern))
+			continue;
+		fputs("\n                  | ", stdout);
+		for (p = monitor_opts[i].pattern; *p; p++)
+			if (*p == '|')
+				fputs(" | ", stdout);
+			else
+				fputc(*p, stdout);
+	}
+	fputs(" )\n", stdout);
+	fputs("                [ DEVNAME | * ]\n", stdout);
+}
diff --git a/netlink/msgbuff.c b/netlink/msgbuff.c
new file mode 100644
index 0000000..216f5b9
--- /dev/null
+++ b/netlink/msgbuff.c
@@ -0,0 +1,256 @@
+/*
+ * msgbuff.c - netlink message buffer
+ *
+ * Data structures and code for flexible message buffer abstraction.
+ */
+
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "../internal.h"
+#include "netlink.h"
+#include "msgbuff.h"
+
+#define MAX_MSG_SIZE (4 << 20)		/* 4 MB */
+
+/**
+ * msgbuff_realloc() - reallocate buffer if needed
+ * @msgbuff:  message buffer
+ * @new_size: requested minimum size (add MNL_SOCKET_BUFFER_SIZE if zero)
+ *
+ * Make sure allocated buffer has size at least @new_size. If @new_size is
+ * shorter than current size, do nothing. If @new_size is 0, grow buffer by
+ * MNL_SOCKET_BUFFER_SIZE. Fail if new size would exceed MAX_MSG_SIZE.
+ *
+ * Return: 0 on success or negative error code
+ */
+int msgbuff_realloc(struct nl_msg_buff *msgbuff, unsigned int new_size)
+{
+	unsigned int nlhdr_off, genlhdr_off, payload_off;
+	unsigned int old_size = msgbuff->size;
+	char *nbuff;
+
+	nlhdr_off = (char *)msgbuff->nlhdr - msgbuff->buff;
+	genlhdr_off = (char *)msgbuff->genlhdr - msgbuff->buff;
+	payload_off = (char *)msgbuff->payload - msgbuff->buff;
+
+	if (!new_size)
+		new_size = old_size + MNL_SOCKET_BUFFER_SIZE;
+	if (new_size <= old_size)
+		return 0;
+	if (new_size > MAX_MSG_SIZE)
+		return -EMSGSIZE;
+	nbuff = realloc(msgbuff->buff, new_size);
+	if (!nbuff) {
+		msgbuff->buff = NULL;
+		msgbuff->size = 0;
+		msgbuff->left = 0;
+		return -ENOMEM;
+	}
+	if (nbuff != msgbuff->buff) {
+		if (new_size > old_size)
+			memset(nbuff + old_size, '\0', new_size - old_size);
+		msgbuff->nlhdr = (struct nlmsghdr *)(nbuff + nlhdr_off);
+		msgbuff->genlhdr = (struct genlmsghdr *)(nbuff + genlhdr_off);
+		msgbuff->payload = nbuff + payload_off;
+		msgbuff->buff = nbuff;
+	}
+	msgbuff->size = new_size;
+	msgbuff->left += (new_size - old_size);
+
+	return 0;
+}
+
+/**
+ * msgbuff_append() - add contents of another message buffer
+ * @dest: target message buffer
+ * @src:  source message buffer
+ *
+ * Append contents of @src at the end of @dest. Fail if target buffer cannot
+ * be reallocated to sufficient size.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int msgbuff_append(struct nl_msg_buff *dest, struct nl_msg_buff *src)
+{
+	unsigned int src_len = mnl_nlmsg_get_payload_len(src->nlhdr);
+	unsigned int dest_len = MNL_ALIGN(msgbuff_len(dest));
+	int ret;
+
+	src_len -= GENL_HDRLEN;
+	ret = msgbuff_realloc(dest, dest_len + src_len);
+	if (ret < 0)
+		return ret;
+	memcpy(mnl_nlmsg_get_payload_tail(dest->nlhdr), src->payload, src_len);
+	msgbuff_reset(dest, dest_len + src_len);
+
+	return 0;
+}
+
+/**
+ * ethnla_put - write a netlink attribute to message buffer
+ * @msgbuff: message buffer
+ * @type:    attribute type
+ * @len:     attribute payload length
+ * @data:    attribute payload
+ *
+ * Appends a netlink attribute with header to message buffer, reallocates
+ * if needed. This is mostly used via specific ethnla_put_* wrappers for
+ * basic data types.
+ *
+ * Return: false on success, true on error (reallocation failed)
+ */
+bool ethnla_put(struct nl_msg_buff *msgbuff, uint16_t type, size_t len,
+		const void *data)
+{
+	struct nlmsghdr *nlhdr = msgbuff->nlhdr;
+
+	while (!mnl_attr_put_check(nlhdr, msgbuff->left, type, len, data)) {
+		int ret = msgbuff_realloc(msgbuff, 0);
+
+		if (ret < 0)
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * ethnla_nest_start - start a nested attribute
+ * @msgbuff: message buffer
+ * @type:    nested attribute type (NLA_F_NESTED is added automatically)
+ *
+ * Return: pointer to the nest attribute or null of error
+ */
+struct nlattr *ethnla_nest_start(struct nl_msg_buff *msgbuff, uint16_t type)
+{
+	struct nlmsghdr *nlhdr = msgbuff->nlhdr;
+	struct nlattr *attr;
+
+	do {
+		attr = mnl_attr_nest_start_check(nlhdr, msgbuff->left, type);
+		if (attr)
+			return attr;
+	} while (msgbuff_realloc(msgbuff, 0) == 0);
+
+	return NULL;
+}
+
+/**
+ * ethnla_fill_header() - write standard ethtool request header to message
+ * @msgbuff: message buffer
+ * @type:    attribute type for header nest
+ * @devname: device name (NULL to omit)
+ * @flags:   request flags (omitted if 0)
+ *
+ * Return: pointer to the nest attribute or null of error
+ */
+bool ethnla_fill_header(struct nl_msg_buff *msgbuff, uint16_t type,
+			const char *devname, uint32_t flags)
+{
+	struct nlattr *nest;
+
+	nest = ethnla_nest_start(msgbuff, type);
+	if (!nest)
+		return true;
+
+	if ((devname &&
+	     ethnla_put_strz(msgbuff, ETHTOOL_A_HEADER_DEV_NAME, devname)) ||
+	    (flags &&
+	     ethnla_put_u32(msgbuff, ETHTOOL_A_HEADER_FLAGS, flags)))
+		goto err;
+
+	ethnla_nest_end(msgbuff, nest);
+	return false;
+
+err:
+	ethnla_nest_cancel(msgbuff, nest);
+	return true;
+}
+
+/**
+ * __msg_init() - init a genetlink message, fill netlink and genetlink header
+ * @msgbuff: message buffer
+ * @family:  genetlink family
+ * @cmd:     genetlink command (genlmsghdr::cmd)
+ * @flags:   netlink flags (nlmsghdr::nlmsg_flags)
+ * @version: genetlink family version (genlmsghdr::version)
+ *
+ * Initialize a new genetlink message, fill netlink and genetlink header and
+ * set pointers in struct nl_msg_buff.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int __msg_init(struct nl_msg_buff *msgbuff, int family, int cmd,
+	       unsigned int flags, int version)
+{
+	struct nlmsghdr *nlhdr;
+	struct genlmsghdr *genlhdr;
+	int ret;
+
+	ret = msgbuff_realloc(msgbuff, MNL_SOCKET_BUFFER_SIZE);
+	if (ret < 0)
+		return ret;
+	memset(msgbuff->buff, '\0', NLMSG_HDRLEN + GENL_HDRLEN);
+
+	nlhdr = mnl_nlmsg_put_header(msgbuff->buff);
+	nlhdr->nlmsg_type = family;
+	nlhdr->nlmsg_flags = flags;
+	msgbuff->nlhdr = nlhdr;
+
+	genlhdr = mnl_nlmsg_put_extra_header(nlhdr, sizeof(*genlhdr));
+	genlhdr->cmd = cmd;
+	genlhdr->version = version;
+	msgbuff->genlhdr = genlhdr;
+
+	msgbuff->payload = mnl_nlmsg_get_payload_offset(nlhdr, GENL_HDRLEN);
+
+	return 0;
+}
+
+/**
+ * msg_init() - init an ethtool netlink message
+ * @msgbuff: message buffer
+ * @cmd:     genetlink command (genlmsghdr::cmd)
+ * @flags:   netlink flags (nlmsghdr::nlmsg_flags)
+ *
+ * Initialize a new ethtool netlink message, fill netlink and genetlink header
+ * and set pointers in struct nl_msg_buff.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int msg_init(struct nl_context *nlctx, struct nl_msg_buff *msgbuff, int cmd,
+	     unsigned int flags)
+{
+	return __msg_init(msgbuff, nlctx->ethnl_fam, cmd, flags,
+			  ETHTOOL_GENL_VERSION);
+}
+
+/**
+ * msgbuff_init() - initialize a message buffer
+ * @msgbuff: message buffer
+ *
+ * Initialize a message buffer structure before first use. Buffer length is
+ * set to zero and the buffer is not allocated until the first call to
+ * msgbuff_reallocate().
+ */
+void msgbuff_init(struct nl_msg_buff *msgbuff)
+{
+	memset(msgbuff, '\0', sizeof(*msgbuff));
+}
+
+/**
+ * msg_done() - destroy a message buffer
+ * @msgbuff: message buffer
+ *
+ * Free the buffer and reset size and remaining size.
+ */
+void msgbuff_done(struct nl_msg_buff *msgbuff)
+{
+	free(msgbuff->buff);
+	msgbuff->buff = NULL;
+	msgbuff->size = 0;
+	msgbuff->left = 0;
+}
diff --git a/netlink/msgbuff.h b/netlink/msgbuff.h
new file mode 100644
index 0000000..7d6731f
--- /dev/null
+++ b/netlink/msgbuff.h
@@ -0,0 +1,123 @@
+/*
+ * msgbuff.h - netlink message buffer
+ *
+ * Declarations of netlink message buffer and related functions.
+ */
+
+#ifndef ETHTOOL_NETLINK_MSGBUFF_H__
+#define ETHTOOL_NETLINK_MSGBUFF_H__
+
+#include <string.h>
+#include <libmnl/libmnl.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+
+struct nl_context;
+
+/**
+ * struct nl_msg_buff - message buffer abstraction
+ * @buff:    pointer to buffer
+ * @size:    total size of allocated buffer
+ * @left:    remaining length current message end to end of buffer
+ * @nlhdr:   pointer to netlink header of current message
+ * @genlhdr: pointer to genetlink header of current message
+ * @payload: pointer to message payload (after genetlink header)
+ */
+struct nl_msg_buff {
+	char			*buff;
+	unsigned int		size;
+	unsigned int		left;
+	struct nlmsghdr		*nlhdr;
+	struct genlmsghdr	*genlhdr;
+	void			*payload;
+};
+
+void msgbuff_init(struct nl_msg_buff *msgbuff);
+void msgbuff_done(struct nl_msg_buff *msgbuff);
+int msgbuff_realloc(struct nl_msg_buff *msgbuff, unsigned int new_size);
+int msgbuff_append(struct nl_msg_buff *dest, struct nl_msg_buff *src);
+
+int __msg_init(struct nl_msg_buff *msgbuff, int family, int cmd,
+	       unsigned int flags, int version);
+int msg_init(struct nl_context *nlctx, struct nl_msg_buff *msgbuff, int cmd,
+	     unsigned int flags);
+
+bool ethnla_put(struct nl_msg_buff *msgbuff, uint16_t type, size_t len,
+		const void *data);
+struct nlattr *ethnla_nest_start(struct nl_msg_buff *msgbuff, uint16_t type);
+bool ethnla_fill_header(struct nl_msg_buff *msgbuff, uint16_t type,
+			const char *devname, uint32_t flags);
+
+/* length of current message */
+static inline unsigned int msgbuff_len(const struct nl_msg_buff *msgbuff)
+{
+	return msgbuff->nlhdr->nlmsg_len;
+}
+
+/* reset message length to position returned by msgbuff_len() */
+static inline void msgbuff_reset(const struct nl_msg_buff *msgbuff,
+				 unsigned int len)
+{
+	msgbuff->nlhdr->nlmsg_len = len;
+}
+
+/* put data wrappers */
+
+static inline void ethnla_nest_end(struct nl_msg_buff *msgbuff,
+				   struct nlattr *nest)
+{
+	mnl_attr_nest_end(msgbuff->nlhdr, nest);
+}
+
+static inline void ethnla_nest_cancel(struct nl_msg_buff *msgbuff,
+				      struct nlattr *nest)
+{
+	mnl_attr_nest_cancel(msgbuff->nlhdr, nest);
+}
+
+static inline bool ethnla_put_u32(struct nl_msg_buff *msgbuff, uint16_t type,
+				  uint32_t data)
+{
+	return ethnla_put(msgbuff, type, sizeof(uint32_t), &data);
+}
+
+static inline bool ethnla_put_u16(struct nl_msg_buff *msgbuff, uint16_t type,
+				  uint16_t data)
+{
+	return ethnla_put(msgbuff, type, sizeof(uint16_t), &data);
+}
+
+static inline bool ethnla_put_u8(struct nl_msg_buff *msgbuff, uint16_t type,
+				 uint8_t data)
+{
+	return ethnla_put(msgbuff, type, sizeof(uint8_t), &data);
+}
+
+static inline bool ethnla_put_flag(struct nl_msg_buff *msgbuff, uint16_t type,
+				   bool val)
+{
+	if (val)
+		return ethnla_put(msgbuff, type, 0, &val);
+	else
+		return false;
+}
+
+static inline bool ethnla_put_bitfield32(struct nl_msg_buff *msgbuff,
+					 uint16_t type, uint32_t value,
+					 uint32_t selector)
+{
+	struct nla_bitfield32 val = {
+		.value		= value,
+		.selector	= selector,
+	};
+
+	return ethnla_put(msgbuff, type, sizeof(val), &val);
+}
+
+static inline bool ethnla_put_strz(struct nl_msg_buff *msgbuff, uint16_t type,
+				   const char *data)
+{
+	return ethnla_put(msgbuff, type, strlen(data) + 1, data);
+}
+
+#endif /* ETHTOOL_NETLINK_MSGBUFF_H__ */
diff --git a/netlink/netlink.c b/netlink/netlink.c
new file mode 100644
index 0000000..ef0d825
--- /dev/null
+++ b/netlink/netlink.c
@@ -0,0 +1,527 @@
+/*
+ * netlink.c - basic infrastructure for netlink code
+ *
+ * Heart of the netlink interface implementation.
+ */
+
+#include <errno.h>
+
+#include "../internal.h"
+#include "netlink.h"
+#include "extapi.h"
+#include "msgbuff.h"
+#include "nlsock.h"
+#include "strset.h"
+
+/* Used as reply callback for requests where no reply is expected (e.g. most
+ * "set" type commands)
+ */
+int nomsg_reply_cb(const struct nlmsghdr *nlhdr, void *data __maybe_unused)
+{
+	const struct genlmsghdr *ghdr = (const struct genlmsghdr *)(nlhdr + 1);
+
+	fprintf(stderr, "received unexpected message: len=%u type=%u cmd=%u\n",
+		nlhdr->nlmsg_len, nlhdr->nlmsg_type, ghdr->cmd);
+	return MNL_CB_OK;
+}
+
+/* standard attribute parser callback; it fills provided array with pointers
+ * to attributes like kernel nla_parse(). We must expect to run on top of
+ * a newer kernel which may send attributes that we do not know (yet). Rather
+ * than treating them as an error, just ignore them.
+ */
+int attr_cb(const struct nlattr *attr, void *data)
+{
+	const struct attr_tb_info *tb_info = data;
+	uint16_t type = mnl_attr_get_type(attr);
+
+	if (type <= tb_info->max_type)
+		tb_info->tb[type] = attr;
+
+	return MNL_CB_OK;
+}
+
+/* misc helpers */
+
+const char *get_dev_name(const struct nlattr *nest)
+{
+	const struct nlattr *tb[ETHTOOL_A_HEADER_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	if (!nest)
+		return NULL;
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0 || !tb[ETHTOOL_A_HEADER_DEV_NAME])
+		return "(none)";
+	return mnl_attr_get_str(tb[ETHTOOL_A_HEADER_DEV_NAME]);
+}
+
+int get_dev_info(const struct nlattr *nest, int *ifindex, char *ifname)
+{
+	const struct nlattr *tb[ETHTOOL_A_HEADER_MAX + 1] = {};
+	const struct nlattr *index_attr;
+	const struct nlattr *name_attr;
+	DECLARE_ATTR_TB_INFO(tb);
+	int ret;
+
+	if (ifindex)
+		*ifindex = 0;
+	if (ifname)
+		memset(ifname, '\0', ALTIFNAMSIZ);
+
+	if (!nest)
+		return -EFAULT;
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	index_attr = tb[ETHTOOL_A_HEADER_DEV_INDEX];
+	name_attr = tb[ETHTOOL_A_HEADER_DEV_NAME];
+	if (ret < 0 || (ifindex && !index_attr) || (ifname && !name_attr))
+		return -EFAULT;
+
+	if (ifindex)
+		*ifindex = mnl_attr_get_u32(index_attr);
+	if (ifname) {
+		strncpy(ifname, mnl_attr_get_str(name_attr), ALTIFNAMSIZ);
+		if (ifname[ALTIFNAMSIZ - 1]) {
+			ifname[ALTIFNAMSIZ - 1] = '\0';
+			fprintf(stderr, "kernel device name too long: '%s'\n",
+				mnl_attr_get_str(name_attr));
+			return -EFAULT;
+		}
+	}
+	return 0;
+}
+
+/**
+ * netlink_cmd_check() - check support for netlink command
+ * @ctx:            ethtool command context
+ * @cmd:            netlink command id
+ * @devname:        device name from user
+ * @allow_wildcard: wildcard dumps supported
+ *
+ * Check if command @cmd is known to be unsupported based on ops information
+ * from genetlink family id request. Set nlctx->ioctl_fallback if ethtool
+ * should fall back to ioctl, i.e. when we do not know in advance that
+ * netlink request is supported. Set nlctx->wildcard_unsupported if "*" was
+ * used as device name but the request does not support wildcards (on either
+ * side).
+ *
+ * Return: true if we know the netlink request is not supported and should
+ * fail (and possibly fall back) without actually sending it to kernel.
+ */
+bool netlink_cmd_check(struct cmd_context *ctx, unsigned int cmd,
+		       bool allow_wildcard)
+{
+	bool is_dump = !strcmp(ctx->devname, WILDCARD_DEVNAME);
+	uint32_t cap = is_dump ? GENL_CMD_CAP_DUMP : GENL_CMD_CAP_DO;
+	struct nl_context *nlctx = ctx->nlctx;
+
+	if (is_dump && !allow_wildcard) {
+		nlctx->wildcard_unsupported = true;
+		return true;
+	}
+	if (!nlctx->ops_info) {
+		nlctx->ioctl_fallback = true;
+		return false;
+	}
+	if (cmd > ETHTOOL_MSG_USER_MAX || !nlctx->ops_info[cmd].op_flags) {
+		nlctx->ioctl_fallback = true;
+		return true;
+	}
+
+	if (is_dump && !(nlctx->ops_info[cmd].op_flags & GENL_CMD_CAP_DUMP))
+		nlctx->wildcard_unsupported = true;
+
+	return !(nlctx->ops_info[cmd].op_flags & cap);
+}
+
+struct ethtool_op_policy_query_ctx {
+	struct nl_context *nlctx;
+	unsigned int op;
+	unsigned int op_hdr_attr;
+
+	bool op_policy_found;
+	bool hdr_policy_found;
+	unsigned int op_policy_idx;
+	unsigned int hdr_policy_idx;
+	uint64_t flag_mask;
+};
+
+static int family_policy_find_op(struct ethtool_op_policy_query_ctx *policy_ctx,
+				 const struct nlattr *op_policy)
+{
+	const struct nlattr *attr;
+	unsigned int type;
+	int ret;
+
+	type = policy_ctx->nlctx->is_dump ?
+		CTRL_ATTR_POLICY_DUMP : CTRL_ATTR_POLICY_DO;
+
+	mnl_attr_for_each_nested(attr, op_policy) {
+		const struct nlattr *tb[CTRL_ATTR_POLICY_DUMP_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+
+		if (mnl_attr_get_type(attr) != policy_ctx->op)
+			continue;
+
+		ret = mnl_attr_parse_nested(attr, attr_cb, &tb_info);
+		if (ret < 0)
+			return ret;
+
+		if (!tb[type])
+			continue;
+
+		policy_ctx->op_policy_found = true;
+		policy_ctx->op_policy_idx = mnl_attr_get_u32(tb[type]);
+		break;
+	}
+
+	return 0;
+}
+
+static int family_policy_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tba[NL_POLICY_TYPE_ATTR_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tba);
+	const struct nlattr *tb[CTRL_ATTR_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct ethtool_op_policy_query_ctx *policy_ctx = data;
+	const struct nlattr *policy_attr, *attr_attr, *attr;
+	unsigned int attr_idx, policy_idx;
+	int ret;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return MNL_CB_ERROR;
+
+	if (!policy_ctx->op_policy_found) {
+		if (!tb[CTRL_ATTR_OP_POLICY]) {
+			fprintf(stderr, "Error: op policy map not present\n");
+			return MNL_CB_ERROR;
+		}
+		ret = family_policy_find_op(policy_ctx, tb[CTRL_ATTR_OP_POLICY]);
+		return ret < 0 ? MNL_CB_ERROR : MNL_CB_OK;
+	}
+
+	if (!tb[CTRL_ATTR_POLICY])
+		return MNL_CB_OK;
+
+	policy_attr = mnl_attr_get_payload(tb[CTRL_ATTR_POLICY]);
+	policy_idx = mnl_attr_get_type(policy_attr);
+	attr_attr = mnl_attr_get_payload(policy_attr);
+	attr_idx = mnl_attr_get_type(attr_attr);
+
+	ret = mnl_attr_parse_nested(attr_attr, attr_cb, &tba_info);
+	if (ret < 0)
+		return MNL_CB_ERROR;
+
+	if (policy_idx == policy_ctx->op_policy_idx &&
+	    attr_idx == policy_ctx->op_hdr_attr) {
+		attr = tba[NL_POLICY_TYPE_ATTR_POLICY_IDX];
+		if (!attr) {
+			fprintf(stderr,	"Error: no policy index in what was expected to be ethtool header attribute\n");
+			return MNL_CB_ERROR;
+		}
+		policy_ctx->hdr_policy_found = true;
+		policy_ctx->hdr_policy_idx = mnl_attr_get_u32(attr);
+	}
+
+	if (policy_ctx->hdr_policy_found &&
+	    policy_ctx->hdr_policy_idx == policy_idx &&
+	    attr_idx == ETHTOOL_A_HEADER_FLAGS) {
+		attr = tba[NL_POLICY_TYPE_ATTR_MASK];
+		if (!attr) {
+			fprintf(stderr,	"Error: validation mask not reported for ethtool header flags\n");
+			return MNL_CB_ERROR;
+		}
+
+		policy_ctx->flag_mask = mnl_attr_get_u64(attr);
+	}
+
+	return MNL_CB_OK;
+}
+
+static int read_flags_policy(struct nl_context *nlctx, struct nl_socket *nlsk,
+			     unsigned int nlcmd, unsigned int hdrattr)
+{
+	struct ethtool_op_policy_query_ctx policy_ctx;
+	struct nl_msg_buff *msgbuff = &nlsk->msgbuff;
+	int ret;
+
+	if (nlctx->ops_info[nlcmd].hdr_policy_loaded)
+		return 0;
+
+	memset(&policy_ctx, 0, sizeof(policy_ctx));
+	policy_ctx.nlctx = nlctx;
+	policy_ctx.op = nlcmd;
+	policy_ctx.op_hdr_attr = hdrattr;
+
+	ret = __msg_init(msgbuff, GENL_ID_CTRL, CTRL_CMD_GETPOLICY,
+			 NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP, 1);
+	if (ret < 0)
+		return ret;
+	ret = -EMSGSIZE;
+	if (ethnla_put_u16(msgbuff, CTRL_ATTR_FAMILY_ID, nlctx->ethnl_fam))
+		return ret;
+	if (ethnla_put_u32(msgbuff, CTRL_ATTR_OP, nlcmd))
+		return ret;
+
+	nlsock_sendmsg(nlsk, NULL);
+	nlsock_process_reply(nlsk, family_policy_cb, &policy_ctx);
+
+	nlctx->ops_info[nlcmd].hdr_policy_loaded = 1;
+	nlctx->ops_info[nlcmd].hdr_flags = policy_ctx.flag_mask;
+	return 0;
+}
+
+u32 get_stats_flag(struct nl_context *nlctx, unsigned int nlcmd,
+		   unsigned int hdrattr)
+{
+	if (!nlctx->ctx->show_stats)
+		return 0;
+	if (nlcmd > ETHTOOL_MSG_USER_MAX ||
+	    !(nlctx->ops_info[nlcmd].op_flags & GENL_CMD_CAP_HASPOL))
+		return 0;
+
+	if (read_flags_policy(nlctx, nlctx->ethnl_socket, nlcmd, hdrattr) < 0)
+		return 0;
+
+	return nlctx->ops_info[nlcmd].hdr_flags & ETHTOOL_FLAG_STATS;
+}
+
+/* initialization */
+
+static int genl_read_ops(struct nl_context *nlctx,
+			 const struct nlattr *ops_attr)
+{
+	struct nl_op_info *ops_info;
+	struct nlattr *op_attr;
+	int ret;
+
+	ops_info = calloc(__ETHTOOL_MSG_USER_CNT, sizeof(ops_info[0]));
+	if (!ops_info)
+		return -ENOMEM;
+
+	mnl_attr_for_each_nested(op_attr, ops_attr) {
+		const struct nlattr *tb[CTRL_ATTR_OP_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+		uint32_t op_id;
+
+		ret = mnl_attr_parse_nested(op_attr, attr_cb, &tb_info);
+		if (ret < 0)
+			goto err;
+
+		if (!tb[CTRL_ATTR_OP_ID] || !tb[CTRL_ATTR_OP_FLAGS])
+			continue;
+		op_id = mnl_attr_get_u32(tb[CTRL_ATTR_OP_ID]);
+		if (op_id >= __ETHTOOL_MSG_USER_CNT)
+			continue;
+
+		ops_info[op_id].op_flags =
+			mnl_attr_get_u32(tb[CTRL_ATTR_OP_FLAGS]);
+	}
+
+	nlctx->ops_info = ops_info;
+	return 0;
+err:
+	free(ops_info);
+	return ret;
+}
+
+static void find_mc_group(struct nl_context *nlctx, struct nlattr *nest)
+{
+	const struct nlattr *grp_tb[CTRL_ATTR_MCAST_GRP_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(grp_tb);
+	struct nlattr *grp_attr;
+	int ret;
+
+	mnl_attr_for_each_nested(grp_attr, nest) {
+		ret = mnl_attr_parse_nested(grp_attr, attr_cb, &grp_tb_info);
+		if (ret < 0)
+			return;
+		if (!grp_tb[CTRL_ATTR_MCAST_GRP_NAME] ||
+		    !grp_tb[CTRL_ATTR_MCAST_GRP_ID])
+			continue;
+		if (strcmp(mnl_attr_get_str(grp_tb[CTRL_ATTR_MCAST_GRP_NAME]),
+			   ETHTOOL_MCGRP_MONITOR_NAME))
+			continue;
+		nlctx->ethnl_mongrp =
+			mnl_attr_get_u32(grp_tb[CTRL_ATTR_MCAST_GRP_ID]);
+		return;
+	}
+}
+
+static int __maybe_unused family_info_cb(const struct nlmsghdr *nlhdr,
+					 void *data)
+{
+	struct nl_context *nlctx = data;
+	struct nlattr *attr;
+	int ret;
+
+	mnl_attr_for_each(attr, nlhdr, GENL_HDRLEN) {
+		switch (mnl_attr_get_type(attr)) {
+		case CTRL_ATTR_FAMILY_ID:
+			nlctx->ethnl_fam = mnl_attr_get_u16(attr);
+			break;
+		case CTRL_ATTR_OPS:
+			ret = genl_read_ops(nlctx, attr);
+			if (ret < 0)
+				return MNL_CB_ERROR;
+			break;
+		case CTRL_ATTR_MCAST_GROUPS:
+			find_mc_group(nlctx, attr);
+			break;
+		}
+	}
+
+	return MNL_CB_OK;
+}
+
+#ifdef TEST_ETHTOOL
+static int get_genl_family(struct nl_context *nlctx __maybe_unused,
+			   struct nl_socket *nlsk __maybe_unused)
+{
+	return 0;
+}
+#else
+static int get_genl_family(struct nl_context *nlctx, struct nl_socket *nlsk)
+{
+	struct nl_msg_buff *msgbuff = &nlsk->msgbuff;
+	int ret;
+
+	nlctx->suppress_nlerr = 2;
+	ret = __msg_init(msgbuff, GENL_ID_CTRL, CTRL_CMD_GETFAMILY,
+			 NLM_F_REQUEST | NLM_F_ACK, 1);
+	if (ret < 0)
+		goto out;
+	ret = -EMSGSIZE;
+	if (ethnla_put_strz(msgbuff, CTRL_ATTR_FAMILY_NAME, ETHTOOL_GENL_NAME))
+		goto out;
+
+	nlsock_sendmsg(nlsk, NULL);
+	nlsock_process_reply(nlsk, family_info_cb, nlctx);
+	ret = nlctx->ethnl_fam ? 0 : -EADDRNOTAVAIL;
+
+out:
+	nlctx->suppress_nlerr = 0;
+	return ret;
+}
+#endif
+
+int netlink_init(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx;
+	int ret;
+
+	nlctx = calloc(1, sizeof(*nlctx));
+	if (!nlctx)
+		return -ENOMEM;
+	nlctx->ctx = ctx;
+	ret = nlsock_init(nlctx, &nlctx->ethnl_socket, NETLINK_GENERIC);
+	if (ret < 0)
+		goto out_free;
+	ret = get_genl_family(nlctx, nlctx->ethnl_socket);
+	if (ret < 0)
+		goto out_nlsk;
+
+	ctx->nlctx = nlctx;
+	return 0;
+
+out_nlsk:
+	nlsock_done(nlctx->ethnl_socket);
+out_free:
+	free(nlctx->ops_info);
+	free(nlctx);
+	return ret;
+}
+
+static void netlink_done(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+
+	if (!nlctx)
+		return;
+
+	nlsock_done(nlctx->ethnl_socket);
+	nlsock_done(nlctx->ethnl2_socket);
+	nlsock_done(nlctx->rtnl_socket);
+	free(nlctx->ops_info);
+	free(nlctx);
+	ctx->nlctx = NULL;
+	cleanup_all_strings();
+}
+
+/**
+ * netlink_run_handler() - run netlink handler for subcommand
+ * @ctx:         command context
+ * @nlchk:       netlink capability check
+ * @nlfunc:      subcommand netlink handler to call
+ * @no_fallback: there is no ioctl fallback handler
+ *
+ * This function returns only if ioctl() handler should be run as fallback.
+ * Otherwise it exits with appropriate return code.
+ */
+void netlink_run_handler(struct cmd_context *ctx, nl_chk_t nlchk,
+			 nl_func_t nlfunc, bool no_fallback)
+{
+	bool wildcard = ctx->devname && !strcmp(ctx->devname, WILDCARD_DEVNAME);
+	bool wildcard_unsupported, ioctl_fallback;
+	struct nl_context *nlctx;
+	const char *reason;
+	int ret;
+
+	if (nlchk && !nlchk(ctx)) {
+		reason = "ioctl-only request";
+		goto no_support;
+	}
+	if (ctx->devname && strlen(ctx->devname) >= ALTIFNAMSIZ) {
+		fprintf(stderr, "device name '%s' longer than %u characters\n",
+			ctx->devname, ALTIFNAMSIZ - 1);
+		exit(1);
+	}
+
+	if (!nlfunc) {
+		reason = "ethtool netlink support for subcommand missing";
+		goto no_support;
+	}
+	if (netlink_init(ctx)) {
+		reason = "netlink interface initialization failed";
+		goto no_support;
+	}
+	nlctx = ctx->nlctx;
+
+	ret = nlfunc(ctx);
+	wildcard_unsupported = nlctx->wildcard_unsupported;
+	ioctl_fallback = nlctx->ioctl_fallback;
+	netlink_done(ctx);
+
+	if (no_fallback || ret != -EOPNOTSUPP || !ioctl_fallback) {
+		if (wildcard_unsupported)
+			fprintf(stderr, "%s\n",
+				"subcommand does not support wildcard dump");
+		exit(ret >= 0 ? ret : 1);
+	}
+	if (wildcard_unsupported)
+		reason = "subcommand does not support wildcard dump";
+	else
+		reason = "kernel netlink support for subcommand missing";
+
+no_support:
+	if (no_fallback) {
+		fprintf(stderr, "%s, subcommand not supported by ioctl\n",
+			reason);
+		exit(1);
+	}
+	if (wildcard) {
+		fprintf(stderr, "%s, wildcard dump not supported\n", reason);
+		exit(1);
+	}
+	if (ctx->devname && strlen(ctx->devname) >= IFNAMSIZ) {
+		fprintf(stderr,
+			"%s, device name longer than %u not supported\n",
+			reason, IFNAMSIZ - 1);
+		exit(1);
+	}
+
+	/* fallback to ioctl() */
+}
diff --git a/netlink/netlink.h b/netlink/netlink.h
new file mode 100644
index 0000000..f43c1bf
--- /dev/null
+++ b/netlink/netlink.h
@@ -0,0 +1,164 @@
+/*
+ * netlink.h - common interface for all netlink code
+ *
+ * Declarations of data structures, global data and helpers for netlink code
+ */
+
+#ifndef ETHTOOL_NETLINK_INT_H__
+#define ETHTOOL_NETLINK_INT_H__
+
+#include <libmnl/libmnl.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+#include <linux/ethtool_netlink.h>
+#include "nlsock.h"
+
+#define WILDCARD_DEVNAME "*"
+#define CMDMASK_WORDS DIV_ROUND_UP(__ETHTOOL_MSG_KERNEL_CNT, 32)
+
+enum link_mode_class {
+	LM_CLASS_UNKNOWN,
+	LM_CLASS_REAL,
+	LM_CLASS_AUTONEG,
+	LM_CLASS_PORT,
+	LM_CLASS_PAUSE,
+	LM_CLASS_FEC,
+};
+
+struct nl_op_info {
+	uint32_t		op_flags;
+	uint32_t		hdr_flags;
+	uint8_t			hdr_policy_loaded:1;
+};
+
+struct nl_context {
+	struct cmd_context	*ctx;
+	void			*cmd_private;
+	const char		*devname;
+	bool			is_dump;
+	int			exit_code;
+	unsigned int		suppress_nlerr;
+	uint16_t		ethnl_fam;
+	uint32_t		ethnl_mongrp;
+	struct nl_op_info	*ops_info;
+	struct nl_socket	*ethnl_socket;
+	struct nl_socket	*ethnl2_socket;
+	struct nl_socket	*rtnl_socket;
+	bool			is_monitor;
+	uint32_t		filter_cmds[CMDMASK_WORDS];
+	const char		*filter_devname;
+	bool			no_banner;
+	const char		*cmd;
+	const char		*param;
+	char			**argp;
+	unsigned int		argc;
+	bool			ioctl_fallback;
+	bool			wildcard_unsupported;
+};
+
+struct attr_tb_info {
+	const struct nlattr **tb;
+	unsigned int max_type;
+};
+
+#define DECLARE_ATTR_TB_INFO(tbl) \
+	struct attr_tb_info tbl ## _info = { (tbl), (MNL_ARRAY_SIZE(tbl) - 1) }
+
+int nomsg_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int attr_cb(const struct nlattr *attr, void *data);
+
+int netlink_init(struct cmd_context *ctx);
+bool netlink_cmd_check(struct cmd_context *ctx, unsigned int cmd,
+		       bool allow_wildcard);
+const char *get_dev_name(const struct nlattr *nest);
+int get_dev_info(const struct nlattr *nest, int *ifindex, char *ifname);
+u32 get_stats_flag(struct nl_context *nlctx, unsigned int nlcmd,
+		   unsigned int hdrattr);
+
+int linkmodes_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int linkinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int wol_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int debug_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int features_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int privflags_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int rings_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int channels_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int coalesce_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int pause_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int eee_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int cable_test_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int cable_test_ntf_cb(const struct nlmsghdr *nlhdr, void *data);
+int cable_test_tdr_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int cable_test_tdr_ntf_cb(const struct nlmsghdr *nlhdr, void *data);
+int fec_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+int module_reply_cb(const struct nlmsghdr *nlhdr, void *data);
+
+/* dump helpers */
+
+int dump_link_modes(struct nl_context *nlctx, const struct nlattr *bitset,
+		    bool mask, unsigned int class, const char *before,
+		    const char *between, const char *after,
+		    const char *if_none);
+
+static inline void show_u32(const struct nlattr *attr, const char *label)
+{
+	if (attr)
+		printf("%s%u\n", label, mnl_attr_get_u32(attr));
+	else
+		printf("%sn/a\n", label);
+}
+
+static inline const char *u8_to_bool(const uint8_t *val)
+{
+	if (val)
+		return *val ? "on" : "off";
+	else
+		return "n/a";
+}
+
+static inline void show_bool_val(const char *key, const char *fmt, uint8_t *val)
+{
+	if (is_json_context()) {
+		if (val)
+			print_bool(PRINT_JSON, key, NULL, val);
+	} else {
+		print_string(PRINT_FP, NULL, fmt, u8_to_bool(val));
+	}
+}
+
+static inline void show_bool(const char *key, const char *fmt,
+			     const struct nlattr *attr)
+{
+	show_bool_val(key, fmt, attr ? mnl_attr_get_payload(attr) : NULL);
+}
+
+/* misc */
+
+static inline void copy_devname(char *dst, const char *src)
+{
+	strncpy(dst, src, ALTIFNAMSIZ);
+	dst[ALTIFNAMSIZ - 1] = '\0';
+}
+
+static inline bool dev_ok(const struct nl_context *nlctx)
+{
+	return !nlctx->filter_devname ||
+	       (nlctx->devname &&
+		!strcmp(nlctx->devname, nlctx->filter_devname));
+}
+
+static inline int netlink_init_ethnl2_socket(struct nl_context *nlctx)
+{
+	if (nlctx->ethnl2_socket)
+		return 0;
+	return nlsock_init(nlctx, &nlctx->ethnl2_socket, NETLINK_GENERIC);
+}
+
+static inline int netlink_init_rtnl_socket(struct nl_context *nlctx)
+{
+	if (nlctx->rtnl_socket)
+		return 0;
+	return nlsock_init(nlctx, &nlctx->rtnl_socket, NETLINK_ROUTE);
+}
+
+#endif /* ETHTOOL_NETLINK_INT_H__ */
diff --git a/netlink/nlsock.c b/netlink/nlsock.c
new file mode 100644
index 0000000..0ec2738
--- /dev/null
+++ b/netlink/nlsock.c
@@ -0,0 +1,405 @@
+/*
+ * nlsock.c - netlink socket
+ *
+ * Data structure and code for netlink socket abstraction.
+ */
+
+#include <stdint.h>
+#include <errno.h>
+
+#include "../internal.h"
+#include "nlsock.h"
+#include "netlink.h"
+#include "prettymsg.h"
+
+#define NLSOCK_RECV_BUFFSIZE 65536
+
+static void ctrl_msg_summary(const struct nlmsghdr *nlhdr)
+{
+	const struct nlmsgerr *nlerr;
+
+	switch (nlhdr->nlmsg_type) {
+	case NLMSG_NOOP:
+		printf(" noop\n");
+		break;
+	case NLMSG_ERROR:
+		printf(" error");
+		if (nlhdr->nlmsg_len < NLMSG_HDRLEN + sizeof(*nlerr)) {
+			printf(" malformed\n");
+			break;
+		}
+		nlerr = mnl_nlmsg_get_payload(nlhdr);
+		printf(" errno=%d\n", nlerr->error);
+		break;
+	case NLMSG_DONE:
+		printf(" done\n");
+		break;
+	case NLMSG_OVERRUN:
+		printf(" overrun\n");
+		break;
+	default:
+		printf(" type %u\n", nlhdr->nlmsg_type);
+		break;
+	}
+}
+
+static void genl_msg_summary(const struct nlmsghdr *nlhdr, int ethnl_fam,
+			     bool outgoing, bool pretty)
+{
+	if (nlhdr->nlmsg_type == ethnl_fam) {
+		const struct pretty_nlmsg_desc *msg_desc;
+		const struct genlmsghdr *ghdr;
+		unsigned int n_desc;
+
+		printf(" ethool");
+		if (nlhdr->nlmsg_len < NLMSG_HDRLEN + GENL_HDRLEN) {
+			printf(" malformed\n");
+			return;
+		}
+		ghdr = mnl_nlmsg_get_payload(nlhdr);
+
+		msg_desc = outgoing ? ethnl_umsg_desc : ethnl_kmsg_desc;
+		n_desc = outgoing ? ethnl_umsg_n_desc : ethnl_kmsg_n_desc;
+		if (ghdr->cmd < n_desc && msg_desc[ghdr->cmd].name)
+			printf(" %s", msg_desc[ghdr->cmd].name);
+		else
+			printf(" cmd %u", ghdr->cmd);
+		fputc('\n', stdout);
+
+		if (pretty)
+			pretty_print_genlmsg(nlhdr, msg_desc, n_desc, 0);
+		return;
+	}
+
+	if (nlhdr->nlmsg_type == GENL_ID_CTRL) {
+		printf(" genl-ctrl\n");
+		if (pretty)
+			pretty_print_genlmsg(nlhdr, genlctrl_msg_desc,
+					     genlctrl_msg_n_desc, 0);
+	} else {
+		fputc('\n', stdout);
+		if (pretty)
+			pretty_print_genlmsg(nlhdr, NULL, 0, 0);
+	}
+}
+
+static void rtnl_msg_summary(const struct nlmsghdr *nlhdr, bool pretty)
+{
+	unsigned int type = nlhdr->nlmsg_type;
+
+	if (type < rtnl_msg_n_desc && rtnl_msg_desc[type].name)
+		printf(" %s\n", rtnl_msg_desc[type].name);
+	else
+		printf(" type %u\n", type);
+
+	if (pretty)
+		pretty_print_rtnlmsg(nlhdr, 0);
+}
+
+static void debug_msg_summary(const struct nlmsghdr *nlhdr, int ethnl_fam,
+			      int nl_fam, bool outgoing, bool pretty)
+{
+	printf("    msg length %u", nlhdr->nlmsg_len);
+
+	if (nlhdr->nlmsg_type < NLMSG_MIN_TYPE) {
+		ctrl_msg_summary(nlhdr);
+		return;
+	}
+
+	switch(nl_fam) {
+	case NETLINK_GENERIC:
+		genl_msg_summary(nlhdr, ethnl_fam, outgoing, pretty);
+		break;
+	case NETLINK_ROUTE:
+		rtnl_msg_summary(nlhdr, pretty);
+		break;
+	default:
+		fputc('\n', stdout);
+		break;
+	}
+}
+
+static void debug_msg(struct nl_socket *nlsk, const void *msg, unsigned int len,
+		      bool outgoing)
+{
+	const char *dirlabel = outgoing ? "sending" : "received";
+	uint32_t debug = nlsk->nlctx->ctx->debug;
+	const struct nlmsghdr *nlhdr = msg;
+	bool summary, dump, pretty;
+	const char *nl_fam_label;
+	int left = len;
+
+	summary = debug_on(debug, DEBUG_NL_MSGS);
+	dump = debug_on(debug,
+			outgoing ? DEBUG_NL_DUMP_SND : DEBUG_NL_DUMP_RCV);
+	pretty = debug_on(debug, DEBUG_NL_PRETTY_MSG);
+	if (!summary && !dump)
+		return;
+	switch(nlsk->nl_fam) {
+	case NETLINK_GENERIC:
+		nl_fam_label = "genetlink";
+		break;
+	case NETLINK_ROUTE:
+		nl_fam_label = "rtnetlink";
+		break;
+	default:
+		nl_fam_label = "netlink";
+		break;
+	}
+	printf("%s %s packet (%u bytes):\n", dirlabel, nl_fam_label, len);
+
+	while (nlhdr && left > 0 && mnl_nlmsg_ok(nlhdr, left)) {
+		if (summary)
+			debug_msg_summary(nlhdr, nlsk->nlctx->ethnl_fam,
+					  nlsk->nl_fam, outgoing, pretty);
+		if (dump)
+			mnl_nlmsg_fprintf(stdout, nlhdr, nlhdr->nlmsg_len,
+					  GENL_HDRLEN);
+
+		nlhdr = mnl_nlmsg_next(nlhdr, &left);
+	}
+}
+
+/**
+ * nlsock_process_ack() - process NLMSG_ERROR message from kernel
+ * @nlhdr:          pointer to netlink header
+ * @len:            length of received data (from nlhdr to end of buffer)
+ * @suppress_nlerr: 0 show all errors, 1 silence -EOPNOTSUPP, 2 silence all
+ *
+ * Return: error code extracted from the message
+ */
+static int nlsock_process_ack(struct nlmsghdr *nlhdr, unsigned long len,
+			      unsigned int suppress_nlerr, bool pretty)
+{
+	const struct nlattr *tb[NLMSGERR_ATTR_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	unsigned int err_offset = 0;
+	unsigned int tlv_offset;
+	struct nlmsgerr *nlerr;
+	bool silent;
+
+	if ((len < NLMSG_HDRLEN + sizeof(*nlerr)) || (len < nlhdr->nlmsg_len))
+		return -EFAULT;
+	nlerr = mnl_nlmsg_get_payload(nlhdr);
+	silent = suppress_nlerr >= 2 ||
+		(suppress_nlerr && nlerr->error == -EOPNOTSUPP);
+	if (silent || !(nlhdr->nlmsg_flags & NLM_F_ACK_TLVS))
+		goto tlv_done;
+
+	tlv_offset = sizeof(*nlerr);
+	if (!(nlhdr->nlmsg_flags & NLM_F_CAPPED))
+		tlv_offset += MNL_ALIGN(mnl_nlmsg_get_payload_len(&nlerr->msg));
+	if (mnl_attr_parse(nlhdr, tlv_offset, attr_cb, &tb_info) < 0)
+		goto tlv_done;
+
+	if (tb[NLMSGERR_ATTR_MSG]) {
+		const char *msg = mnl_attr_get_str(tb[NLMSGERR_ATTR_MSG]);
+
+		fprintf(stderr, "netlink %s: %s",
+			nlerr->error ? "error" : "warning", msg);
+		if (!pretty && tb[NLMSGERR_ATTR_OFFS])
+			fprintf(stderr, " (offset %u)",
+				mnl_attr_get_u32(tb[NLMSGERR_ATTR_OFFS]));
+		fputc('\n', stderr);
+	}
+	if (tb[NLMSGERR_ATTR_OFFS])
+		err_offset = mnl_attr_get_u32(tb[NLMSGERR_ATTR_OFFS]);
+
+tlv_done:
+	if (nlerr->error && !silent) {
+		errno = -nlerr->error;
+		perror("netlink error");
+	}
+	if (pretty && !(nlhdr->nlmsg_flags & NLM_F_CAPPED) &&
+	    nlhdr->nlmsg_len >= NLMSG_HDRLEN + nlerr->msg.nlmsg_len) {
+		fprintf(stderr, "offending message%s:\n",
+			err_offset ? " and attribute" : "");
+		pretty_print_genlmsg(&nlerr->msg, ethnl_umsg_desc,
+				     ethnl_umsg_n_desc, err_offset);
+	}
+	return nlerr->error;
+}
+
+/**
+ * nlsock_process_reply() - process reply packet(s) from kernel
+ * @nlsk:     netlink socket to read from
+ * @reply_cb: callback to process each message
+ * @data:     pointer passed as argument to @reply_cb callback
+ *
+ * Read packets from kernel and pass reply messages to @reply_cb callback
+ * until an error is encountered or NLMSG_ERR message is received. In the
+ * latter case, return value is the error code extracted from it.
+ *
+ * Return: 0 on success or negative error code
+ */
+int nlsock_process_reply(struct nl_socket *nlsk, mnl_cb_t reply_cb, void *data)
+{
+	struct nl_msg_buff *msgbuff = &nlsk->msgbuff;
+	struct nlmsghdr *nlhdr;
+	ssize_t len;
+	char *buff;
+	int ret;
+
+	ret = msgbuff_realloc(msgbuff, NLSOCK_RECV_BUFFSIZE);
+	if (ret < 0)
+		return ret;
+	buff = msgbuff->buff;
+
+	do {
+		len = mnl_socket_recvfrom(nlsk->sk, buff, msgbuff->size);
+		if (len <= 0)
+			return (len ? -EFAULT : 0);
+		debug_msg(nlsk, buff, len, false);
+		if (len < NLMSG_HDRLEN)
+			return -EFAULT;
+
+		nlhdr = (struct nlmsghdr *)buff;
+		if (nlhdr->nlmsg_type == NLMSG_ERROR) {
+			unsigned int suppress = nlsk->nlctx->suppress_nlerr;
+			bool pretty;
+
+			pretty = debug_on(nlsk->nlctx->ctx->debug,
+					  DEBUG_NL_PRETTY_MSG);
+			return nlsock_process_ack(nlhdr, len, suppress, pretty);
+		}
+
+		msgbuff->nlhdr = nlhdr;
+		msgbuff->genlhdr = mnl_nlmsg_get_payload(nlhdr);
+		msgbuff->payload =
+			mnl_nlmsg_get_payload_offset(nlhdr, GENL_HDRLEN);
+		ret = mnl_cb_run(buff, len, nlsk->seq, nlsk->port, reply_cb,
+				 data);
+	} while (ret > 0);
+
+	return ret;
+}
+
+int nlsock_prep_get_request(struct nl_socket *nlsk, unsigned int nlcmd,
+			    uint16_t hdr_attrtype, u32 flags)
+{
+	unsigned int nlm_flags = NLM_F_REQUEST | NLM_F_ACK;
+	struct nl_context *nlctx = nlsk->nlctx;
+	const char *devname = nlctx->ctx->devname;
+	int ret;
+
+	if (devname && !strcmp(devname, WILDCARD_DEVNAME)) {
+		devname = NULL;
+		nlm_flags |= NLM_F_DUMP;
+	}
+	nlctx->is_dump = !devname;
+
+	ret = msg_init(nlctx, &nlsk->msgbuff, nlcmd, nlm_flags);
+	if (ret < 0)
+		return ret;
+	if (ethnla_fill_header(&nlsk->msgbuff, hdr_attrtype, devname, flags))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+#ifndef TEST_ETHTOOL
+/**
+ * nlsock_sendmsg() - send a netlink message to kernel
+ * @nlsk:    netlink socket
+ * @altbuff: alternative message buffer; if null, use buffer embedded in @nlsk
+ *
+ * Return: sent size or negative error code
+ */
+ssize_t nlsock_sendmsg(struct nl_socket *nlsk, struct nl_msg_buff *altbuff)
+{
+	struct nl_msg_buff *msgbuff = altbuff ?: &nlsk->msgbuff;
+	struct nlmsghdr *nlhdr = msgbuff->nlhdr;
+
+	nlhdr->nlmsg_seq = ++nlsk->seq;
+	debug_msg(nlsk, msgbuff->buff, nlhdr->nlmsg_len, true);
+	return mnl_socket_sendto(nlsk->sk, nlhdr, nlhdr->nlmsg_len);
+}
+#endif
+
+/**
+ * nlsock_send_get_request() - send request and process reply
+ * @nlsk: netlink socket
+ * @cb:   callback to process reply message(s)
+ *
+ * This simple helper only handles the most common case when the embedded
+ * message buffer is sent and @cb takes netlink context (struct nl_context)
+ * as last argument.
+ */
+int nlsock_send_get_request(struct nl_socket *nlsk, mnl_cb_t cb)
+{
+	int ret;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		goto err;
+	ret = nlsock_process_reply(nlsk, cb, nlsk->nlctx);
+	if (ret == 0)
+		return 0;
+err:
+	return nlsk->nlctx->exit_code ?: 1;
+}
+
+/**
+ * nlsock_init() - allocate and initialize netlink socket
+ * @nlctx:  netlink context
+ * @__nlsk: store pointer to the allocated socket here
+ * @nl_fam: netlink family (e.g. NETLINK_GENERIC or NETLINK_ROUTE)
+ *
+ * Allocate and initialize netlink socket and its embedded message buffer.
+ * Cleans up on error, caller is responsible for destroying the socket with
+ * nlsock_done() on success.
+ *
+ * Return: 0 on success or negative error code
+ */
+int nlsock_init(struct nl_context *nlctx, struct nl_socket **__nlsk, int nl_fam)
+{
+	struct nl_socket *nlsk;
+	int val;
+	int ret;
+
+	nlsk = calloc(1, sizeof(*nlsk));
+	if (!nlsk)
+		return -ENOMEM;
+	nlsk->nlctx = nlctx;
+	msgbuff_init(&nlsk->msgbuff);
+
+	ret = -ECONNREFUSED;
+	nlsk->sk = mnl_socket_open(nl_fam);
+	if (!nlsk->sk)
+		goto out_msgbuff;
+	val = 1;
+	mnl_socket_setsockopt(nlsk->sk, NETLINK_EXT_ACK, &val, sizeof(val));
+	ret = mnl_socket_bind(nlsk->sk, 0, MNL_SOCKET_AUTOPID);
+	if (ret < 0)
+		goto out_close;
+	nlsk->port = mnl_socket_get_portid(nlsk->sk);
+	nlsk->nl_fam = nl_fam;
+
+	*__nlsk = nlsk;
+	return 0;
+
+out_close:
+	if (nlsk->sk)
+		mnl_socket_close(nlsk->sk);
+out_msgbuff:
+	msgbuff_done(&nlsk->msgbuff);
+	free(nlsk);
+	return ret;
+}
+
+/**
+ * nlsock_done() - destroy a netlink socket
+ * @nlsk: netlink socket
+ *
+ * Close the socket and free the structure and related data.
+ */
+void nlsock_done(struct nl_socket *nlsk)
+{
+	if (!nlsk)
+		return;
+	if (nlsk->sk)
+		mnl_socket_close(nlsk->sk);
+	msgbuff_done(&nlsk->msgbuff);
+	memset(nlsk, '\0', sizeof(*nlsk));
+	free(nlsk);
+}
diff --git a/netlink/nlsock.h b/netlink/nlsock.h
new file mode 100644
index 0000000..b015f86
--- /dev/null
+++ b/netlink/nlsock.h
@@ -0,0 +1,45 @@
+/*
+ * nlsock.h - netlink socket
+ *
+ * Declarations of netlink socket structure and related functions.
+ */
+
+#ifndef ETHTOOL_NETLINK_NLSOCK_H__
+#define ETHTOOL_NETLINK_NLSOCK_H__
+
+#include <libmnl/libmnl.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+#include <linux/ethtool_netlink.h>
+#include "msgbuff.h"
+
+struct nl_context;
+
+/**
+ * struct nl_socket - netlink socket abstraction
+ * @nlctx:   netlink context
+ * @sk:      libmnl socket handle
+ * @msgbuff: embedded message buffer used by default
+ * @port:    port number for netlink header
+ * @seq:     autoincremented sequence number for netlink header
+ * @nl_fam:  netlink family (e.g. NETLINK_GENERIC or NETLINK_ROUTE)
+ */
+struct nl_socket {
+	struct nl_context	*nlctx;
+	struct mnl_socket	*sk;
+	struct nl_msg_buff	msgbuff;
+	unsigned int		port;
+	unsigned int		seq;
+	int			nl_fam;
+};
+
+int nlsock_init(struct nl_context *nlctx, struct nl_socket **__nlsk,
+		int nl_fam);
+void nlsock_done(struct nl_socket *nlsk);
+int nlsock_prep_get_request(struct nl_socket *nlsk, unsigned int nlcmd,
+			    uint16_t hdr_attrtype, u32 flags);
+ssize_t nlsock_sendmsg(struct nl_socket *nlsk, struct nl_msg_buff *__msgbuff);
+int nlsock_send_get_request(struct nl_socket *nlsk, mnl_cb_t cb);
+int nlsock_process_reply(struct nl_socket *nlsk, mnl_cb_t reply_cb, void *data);
+
+#endif /* ETHTOOL_NETLINK_NLSOCK_H__ */
diff --git a/netlink/parser.c b/netlink/parser.c
new file mode 100644
index 0000000..f982f22
--- /dev/null
+++ b/netlink/parser.c
@@ -0,0 +1,1141 @@
+/*
+ * parser.c - netlink command line parser
+ *
+ * Implementation of command line parser used by netlink code.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+static void parser_err_unknown_param(struct nl_context *nlctx)
+{
+	fprintf(stderr, "ethtool (%s): unknown parameter '%s'\n", nlctx->cmd,
+		nlctx->param);
+}
+
+static void parser_err_dup_param(struct nl_context *nlctx)
+{
+	fprintf(stderr, "ethtool (%s): duplicate parameter '%s'\n", nlctx->cmd,
+		nlctx->param);
+}
+
+static void parser_err_min_argc(struct nl_context *nlctx, unsigned int min_argc)
+{
+	if (min_argc == 1)
+		fprintf(stderr, "ethtool (%s): no value for parameter '%s'\n",
+			nlctx->cmd, nlctx->param);
+	else
+		fprintf(stderr,
+			"ethtool (%s): parameter '%s' requires %u words\n",
+			nlctx->cmd, nlctx->param, min_argc);
+}
+
+static void parser_err_invalid_value(struct nl_context *nlctx, const char *val)
+{
+	fprintf(stderr, "ethtool (%s): invalid value '%s' for parameter '%s'\n",
+		nlctx->cmd, val, nlctx->param);
+}
+
+static void parser_err_invalid_flag(struct nl_context *nlctx, const char *flag)
+{
+	fprintf(stderr, "ethtool (%s): flag '%s' for parameter '%s' is not followed by 'on' or 'off'\n",
+		nlctx->cmd, flag, nlctx->param);
+}
+
+static bool __prefix_0x(const char *p)
+{
+	return p[0] == '0' && (p[1] == 'x' || p[1] == 'X');
+}
+
+static float parse_float(const char *arg, float *result, float min,
+			 float max)
+{
+	char *endptr;
+	float val;
+
+	if (!arg || !arg[0])
+		return -EINVAL;
+	val = strtof(arg, &endptr);
+	if (*endptr || val < min || val > max)
+		return -EINVAL;
+
+	*result = val;
+	return 0;
+}
+
+static int __parse_u32(const char *arg, uint32_t *result, uint32_t min,
+		       uint32_t max, int base)
+{
+	unsigned long long val;
+	char *endptr;
+
+	if (!arg || !arg[0])
+		return -EINVAL;
+	val = strtoul(arg, &endptr, base);
+	if (*endptr || val < min || val > max)
+		return -EINVAL;
+
+	*result = (uint32_t)val;
+	return 0;
+}
+
+static int parse_u32d(const char *arg, uint32_t *result)
+{
+	return __parse_u32(arg, result, 0, 0xffffffff, 10);
+}
+
+static int parse_x32(const char *arg, uint32_t *result)
+{
+	return __parse_u32(arg, result, 0, 0xffffffff, 16);
+}
+
+int parse_u32(const char *arg, uint32_t *result)
+{
+	if (!arg)
+		return -EINVAL;
+	if (__prefix_0x(arg))
+		return parse_x32(arg + 2, result);
+	else
+		return parse_u32d(arg, result);
+}
+
+static int parse_u8(const char *arg, uint8_t *result)
+{
+	uint32_t val;
+	int ret = parse_u32(arg, &val);
+
+	if (ret < 0)
+		return ret;
+	if (val > UINT8_MAX)
+		return -EINVAL;
+
+	*result = (uint8_t)val;
+	return 0;
+}
+
+static int lookup_u32(const char *arg, uint32_t *result,
+		      const struct lookup_entry_u32 *tbl)
+{
+	if (!arg)
+		return -EINVAL;
+	while (tbl->arg) {
+		if (!strcmp(tbl->arg, arg)) {
+			*result = tbl->val;
+			return 0;
+		}
+		tbl++;
+	}
+
+	return -EINVAL;
+}
+
+static int lookup_u8(const char *arg, uint8_t *result,
+		     const struct lookup_entry_u8 *tbl)
+{
+	if (!arg)
+		return -EINVAL;
+	while (tbl->arg) {
+		if (!strcmp(tbl->arg, arg)) {
+			*result = tbl->val;
+			return 0;
+		}
+		tbl++;
+	}
+
+	return -EINVAL;
+}
+
+/* Parser handler for a flag. Expects a name (with no additional argument),
+ * generates NLA_FLAG or sets a bool (if the name was present).
+ */
+int nl_parse_flag(struct nl_context *nlctx __maybe_unused, uint16_t type,
+		  const void *data __maybe_unused, struct nl_msg_buff *msgbuff,
+		  void *dest)
+{
+	if (dest)
+		*(bool *)dest = true;
+	return (type && ethnla_put_flag(msgbuff, type, true)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for null terminated string. Expects a string argument,
+ * generates NLA_NUL_STRING or fills const char *
+ */
+int nl_parse_string(struct nl_context *nlctx, uint16_t type,
+		    const void *data __maybe_unused,
+		    struct nl_msg_buff *msgbuff, void *dest)
+{
+	const char *arg = *nlctx->argp;
+
+	nlctx->argp++;
+	nlctx->argc--;
+
+	if (dest)
+		*(const char **)dest = arg;
+	return (type && ethnla_put_strz(msgbuff, type, arg)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for unsigned 32-bit integer. Expects a numeric argument
+ * (may use 0x prefix), generates NLA_U32 or fills an uint32_t.
+ */
+int nl_parse_direct_u32(struct nl_context *nlctx, uint16_t type,
+			const void *data __maybe_unused,
+			struct nl_msg_buff *msgbuff, void *dest)
+{
+	const char *arg = *nlctx->argp;
+	uint32_t val;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	ret = parse_u32(arg, &val);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		return ret;
+	}
+
+	if (dest)
+		*(uint32_t *)dest = val;
+	return (type && ethnla_put_u32(msgbuff, type, val)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for unsigned 32-bit integer. Expects a numeric argument
+ * (may use 0x prefix), generates NLA_U32 or fills an uint32_t.
+ */
+int nl_parse_direct_u8(struct nl_context *nlctx, uint16_t type,
+		       const void *data __maybe_unused,
+		       struct nl_msg_buff *msgbuff, void *dest)
+{
+	const char *arg = *nlctx->argp;
+	uint8_t val;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	ret = parse_u8(arg, &val);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		return ret;
+	}
+
+	if (dest)
+		*(uint8_t *)dest = val;
+	return (type && ethnla_put_u8(msgbuff, type, val)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for float meters and convert it to cm. Generates
+ * NLA_U32 or fills an uint32_t.
+ */
+int nl_parse_direct_m2cm(struct nl_context *nlctx, uint16_t type,
+			 const void *data __maybe_unused,
+			 struct nl_msg_buff *msgbuff, void *dest)
+{
+	const char *arg = *nlctx->argp;
+	float meters;
+	uint32_t cm;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	ret = parse_float(arg, &meters, 0, 150);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		return ret;
+	}
+
+	cm = (uint32_t)(meters * 100 + 0.5);
+	if (dest)
+		*(uint32_t *)dest = cm;
+	return (type && ethnla_put_u32(msgbuff, type, cm)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for (tri-state) bool. Expects "name on|off", generates
+ * NLA_U8 which is 1 for "on" and 0 for "off".
+ */
+int nl_parse_u8bool(struct nl_context *nlctx, uint16_t type,
+		    const void *data __maybe_unused,
+		    struct nl_msg_buff *msgbuff, void *dest)
+{
+	const char *arg = *nlctx->argp;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	if (!strcmp(arg, "on")) {
+		if (dest)
+			*(uint8_t *)dest = 1;
+		ret = type ? ethnla_put_u8(msgbuff, type, 1) : 0;
+	} else if (!strcmp(arg, "off")) {
+		if (dest)
+			*(uint8_t *)dest = 0;
+		ret = type ? ethnla_put_u8(msgbuff, type, 0) : 0;
+	} else {
+		parser_err_invalid_value(nlctx, arg);
+		return -EINVAL;
+	}
+
+	return ret ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for 32-bit lookup value. Expects a string argument, looks it
+ * up in a table, generates NLA_U32 or fills uint32_t variable. The @data
+ * parameter is a null terminated array of struct lookup_entry_u32.
+ */
+int nl_parse_lookup_u32(struct nl_context *nlctx, uint16_t type,
+			const void *data, struct nl_msg_buff *msgbuff,
+			void *dest)
+{
+	const char *arg = *nlctx->argp;
+	uint32_t val;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	ret = lookup_u32(arg, &val, data);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		return ret;
+	}
+
+	if (dest)
+		*(uint32_t *)dest = val;
+	return (type && ethnla_put_u32(msgbuff, type, val)) ? -EMSGSIZE : 0;
+}
+
+/* Parser handler for 8-bit lookup value. Expects a string argument, looks it
+ * up in a table, generates NLA_U8 or fills uint8_t variable. The @data
+ * parameter is a null terminated array of struct lookup_entry_u8.
+ */
+int nl_parse_lookup_u8(struct nl_context *nlctx, uint16_t type,
+		       const void *data, struct nl_msg_buff *msgbuff,
+		       void *dest)
+{
+	const char *arg = *nlctx->argp;
+	uint8_t val;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+	ret = lookup_u8(arg, &val, data);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		return ret;
+	}
+
+	if (dest)
+		*(uint8_t *)dest = val;
+	return (type && ethnla_put_u8(msgbuff, type, val)) ? -EMSGSIZE : 0;
+}
+
+/* number of significant bits */
+static unsigned int __nsb(uint32_t x)
+{
+	unsigned int ret = 0;
+
+	if (x & 0xffff0000U) {
+		x >>= 16;
+		ret += 16;
+	}
+	if (x & 0xff00U) {
+		x >>= 8;
+		ret += 8;
+	}
+	if (x & 0xf0U) {
+		x >>= 4;
+		ret += 4;
+	}
+	if (x & 0xcU) {
+		x >>= 2;
+		ret += 2;
+	}
+	if (x & 0x2U) {
+		x >>= 1;
+		ret += 1;
+	}
+
+	return ret + x;
+}
+
+static bool __is_hex(char c)
+{
+	if (isdigit(c))
+		return true;
+	else
+		return (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
+}
+
+static unsigned int __hex_val(char c)
+{
+	if (c >= '0' && c <= '9')
+		return c - '0';
+	if (c >= 'a' && c <= 'f')
+		return c - 'a' + 0xa;
+	if (c >= 'A' && c <= 'F')
+		return c - 'A' + 0xa;
+	return 0;
+}
+
+static bool __bytestr_delim(const char *p, char delim)
+{
+	return !*p || (delim ? (*p == delim) : !__is_hex(*p));
+}
+
+/* Parser handler for generic byte string in MAC-like format. Expects string
+ * argument in the "[[:xdigit:]]{2}(:[[:xdigit:]]{2})*" format, generates
+ * NLA_BINARY or fills a struct byte_str_value (if @dest is not null and the
+ * handler succeeds, caller is responsible for freeing the value). The @data
+ * parameter points to struct byte_str_parser_data.
+ */
+int nl_parse_byte_str(struct nl_context *nlctx, uint16_t type, const void *data,
+		      struct nl_msg_buff *msgbuff, void *dest)
+{
+	const struct byte_str_parser_data *pdata = data;
+	struct byte_str_value *dest_value = dest;
+	const char *arg = *nlctx->argp;
+	uint8_t *val = NULL;
+	unsigned int len, i;
+	const char *p;
+	int ret;
+
+	nlctx->argp++;
+	nlctx->argc--;
+
+	len = 0;
+	p = arg;
+	if (!*p)
+		goto err;
+	while (true) {
+		len++;
+		if (!__bytestr_delim(p, pdata->delim))
+			p++;
+		if (!__bytestr_delim(p, pdata->delim))
+			p++;
+		if (!__bytestr_delim(p, pdata->delim))
+			goto err;
+		if (!*p)
+			break;
+		p++;
+		if (*p && __bytestr_delim(p, pdata->delim))
+			goto err;
+	}
+	if (len < pdata->min_len || (pdata->max_len && len > pdata->max_len))
+		goto err;
+	val = malloc(len);
+	if (!val)
+		return -ENOMEM;
+
+	p = arg;
+	for (i = 0; i < len; i++) {
+		uint8_t byte = 0;
+
+		if (!__is_hex(*p))
+			goto err;
+		while (__is_hex(*p))
+			byte = 16 * byte + __hex_val(*p++);
+		if (!__bytestr_delim(p, pdata->delim))
+			goto err;
+		val[i] = byte;
+		if (*p)
+			p++;
+	}
+	ret = type ? ethnla_put(msgbuff, type, len, val) : 0;
+	if (dest) {
+		dest_value->len = len;
+		dest_value->data = val;
+	} else {
+		free(val);
+	}
+	return ret;
+
+err:
+	free(val);
+	fprintf(stderr, "ethtool (%s): invalid value '%s' of parameter '%s'\n",
+		nlctx->cmd, arg, nlctx->param);
+	return -EINVAL;
+}
+
+/* Parser handler for parameters recognized for backward compatibility but
+ * supposed to fail without passing to kernel. Does not generate any netlink
+ * attributes of fill any variable. The @data parameter points to struct
+ * error_parser_params (error message, return value and number of extra
+ * arguments to skip).
+ */
+int nl_parse_error(struct nl_context *nlctx, uint16_t type __maybe_unused,
+		   const void *data, struct nl_msg_buff *msgbuff __maybe_unused,
+		   void *dest __maybe_unused)
+{
+	const struct error_parser_data *parser_data = data;
+	unsigned int skip = parser_data->extra_args;
+
+	fprintf(stderr, "ethtool (%s): ", nlctx->cmd);
+	fprintf(stderr, parser_data->err_msg, nlctx->param);
+	if (nlctx->argc < skip) {
+		fprintf(stderr, "ethtool (%s): too few arguments for parameter '%s' (expected %u)\n",
+			nlctx->cmd, nlctx->param, skip);
+	} else {
+		nlctx->argp += skip;
+		nlctx->argc -= skip;
+	}
+
+	return parser_data->ret_val;
+}
+
+/* bitset parser handlers */
+
+/* Return true if a bitset argument should be parsed as numeric, i.e.
+ * (a) it starts with '0x'
+ * (b) it consists only of hex digits and at most one slash which can be
+ *     optionally followed by "0x"; if no_mask is true, slash is not allowed
+ */
+static bool is_numeric_bitset(const char *arg, bool no_mask)
+{
+	const char *p = arg;
+	bool has_slash = false;
+
+	if (!arg)
+		return false;
+	if (__prefix_0x(arg))
+		return true;
+	while (*p) {
+		if (*p == '/') {
+			if (has_slash || no_mask)
+				return false;
+			has_slash = true;
+			p++;
+			if (__prefix_0x(p))
+				p += 2;
+			continue;
+		}
+		if (!__is_hex(*p))
+			return false;
+		p++;
+	}
+	return true;
+}
+
+#define __MAX_U32_DIGITS 10
+
+/* Parse hex string (without leading "0x") into a bitmap consisting of 32-bit
+ * words. Caller must make sure arg is at least len characters long and dst has
+ * place for at least (len + 7) / 8 32-bit words. If force_hex is false, allow
+ * also base 10 unsigned 32-bit value.
+ *
+ * Returns number of significant bits in the bitmap on success and negative
+ * value on error.
+ */
+static int __parse_num_string(const char *arg, unsigned int len, uint32_t *dst,
+			      bool force_hex)
+{
+	char buff[__MAX_U32_DIGITS + 1] = {};
+	unsigned int nbits = 0;
+	const char *p = arg;
+
+	if (!len)
+		return -EINVAL;
+	if (!force_hex && len <= __MAX_U32_DIGITS) {
+		strncpy(buff, arg, len);
+		if (!buff[__MAX_U32_DIGITS]) {
+			u32 val;
+			int ret;
+
+			ret = parse_u32d(buff, &val);
+			if (!ret) {
+				*dst = val;
+				return __nsb(val);
+			}
+		}
+	}
+
+	dst += (len - 1) / 8;
+	while (len > 0) {
+		unsigned int chunk = (len % 8) ?: 8;
+		unsigned long val;
+		char *endp;
+
+		memcpy(buff, p, chunk);
+		buff[chunk] = '\0';
+		val = strtoul(buff, &endp, 16);
+		if (*endp)
+			return -EINVAL;
+		*dst-- = (uint32_t)val;
+		if (nbits)
+			nbits += 4 * chunk;
+		else
+			nbits = __nsb(val);
+
+		p += chunk;
+		len -= chunk;
+	}
+	return nbits;
+}
+
+/* Parse bitset provided as a base 16 numeric value (@no_mask is true) or pair
+ * of base 16 numeric values  separated by '/' (@no_mask is false). The "0x"
+ * prefix is optional. Generates bitset nested attribute in compact form.
+ */
+static int parse_numeric_bitset(struct nl_context *nlctx, uint16_t type,
+				bool no_mask, bool force_hex,
+				struct nl_msg_buff *msgbuff)
+{
+	unsigned int nwords, len1, len2;
+	const char *arg = *nlctx->argp;
+	bool force_hex1 = force_hex;
+	bool force_hex2 = force_hex;
+	uint32_t *value = NULL;
+	uint32_t *mask = NULL;
+	struct nlattr *nest;
+	const char *maskptr;
+	int ret = 0;
+	int nbits;
+
+	if (__prefix_0x(arg)) {
+		force_hex1 = true;
+		arg += 2;
+	}
+
+	maskptr = strchr(arg, '/');
+	if (maskptr && no_mask) {
+		parser_err_invalid_value(nlctx, arg);
+		return -EINVAL;
+	}
+	len1 = maskptr ? (unsigned int)(maskptr - arg) : strlen(arg);
+	nwords = DIV_ROUND_UP(len1, 8);
+	nbits = 0;
+
+	if (maskptr) {
+		maskptr++;
+		if (__prefix_0x(maskptr)) {
+			maskptr += 2;
+			force_hex2 = true;
+		}
+		len2 = strlen(maskptr);
+		if (len2 > len1)
+			nwords = DIV_ROUND_UP(len2, 8);
+		mask = calloc(nwords, sizeof(uint32_t));
+		if (!mask)
+			return -ENOMEM;
+		ret = __parse_num_string(maskptr, strlen(maskptr), mask,
+					 force_hex2);
+		if (ret < 0) {
+			parser_err_invalid_value(nlctx, arg);
+			goto out_free;
+		}
+		nbits = ret;
+	}
+
+	value = calloc(nwords, sizeof(uint32_t));
+	if (!value) {
+		free(mask);
+		return -ENOMEM;
+	}
+	ret = __parse_num_string(arg, len1, value, force_hex1);
+	if (ret < 0) {
+		parser_err_invalid_value(nlctx, arg);
+		goto out_free;
+	}
+	nbits = (nbits < ret) ? ret : nbits;
+	nwords = (nbits + 31) / 32;
+
+	ret = 0;
+	if (!type)
+		goto out_free;
+	ret = -EMSGSIZE;
+	nest = ethnla_nest_start(msgbuff, type);
+	if (!nest)
+	       goto out_free;
+	if (ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_NOMASK, !mask) ||
+	    ethnla_put_u32(msgbuff, ETHTOOL_A_BITSET_SIZE, nbits) ||
+	    ethnla_put(msgbuff, ETHTOOL_A_BITSET_VALUE,
+		       nwords * sizeof(uint32_t), value) ||
+	    (mask &&
+	     ethnla_put(msgbuff, ETHTOOL_A_BITSET_MASK,
+			nwords * sizeof(uint32_t), mask)))
+		goto out_free;
+	ethnla_nest_end(msgbuff, nest);
+	ret = 0;
+
+out_free:
+	free(value);
+	free(mask);
+	nlctx->argp++;
+	nlctx->argc--;
+	return ret;
+}
+
+/* Parse bitset provided as series of "name on|off" pairs (@no_mask is false)
+ * or names (@no_mask is true). Generates bitset nested attribute in verbose
+ * form with names from command line.
+ */
+static int parse_name_bitset(struct nl_context *nlctx, uint16_t type,
+			     bool no_mask, struct nl_msg_buff *msgbuff)
+{
+	struct nlattr *bitset_attr;
+	struct nlattr *bits_attr;
+	struct nlattr *bit_attr;
+	int ret;
+
+	bitset_attr = ethnla_nest_start(msgbuff, type);
+	if (!bitset_attr)
+		return -EMSGSIZE;
+	ret = -EMSGSIZE;
+	if (no_mask && ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_NOMASK, true))
+		goto err;
+	bits_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_BITSET_BITS);
+	if (!bits_attr)
+		goto err;
+
+	while (nlctx->argc > 0) {
+		bool bit_val = true;
+
+		if (!strcmp(*nlctx->argp, "--")) {
+			nlctx->argp++;
+			nlctx->argc--;
+			break;
+		}
+		ret = -EINVAL;
+		if (!no_mask) {
+			if (nlctx->argc < 2 ||
+			    (strcmp(nlctx->argp[1], "on") &&
+			     strcmp(nlctx->argp[1], "off"))) {
+				parser_err_invalid_flag(nlctx, *nlctx->argp);
+				goto err;
+			}
+			bit_val = !strcmp(nlctx->argp[1], "on");
+		}
+
+		ret = -EMSGSIZE;
+		bit_attr = ethnla_nest_start(msgbuff,
+					     ETHTOOL_A_BITSET_BITS_BIT);
+		if (!bit_attr)
+			goto err;
+		if (ethnla_put_strz(msgbuff, ETHTOOL_A_BITSET_BIT_NAME,
+				    nlctx->argp[0]))
+			goto err;
+		if (!no_mask &&
+		    ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_BIT_VALUE,
+				    bit_val))
+			goto err;
+		ethnla_nest_end(msgbuff, bit_attr);
+
+		nlctx->argp += (no_mask ? 1 : 2);
+		nlctx->argc -= (no_mask ? 1 : 2);
+	}
+
+	ethnla_nest_end(msgbuff, bits_attr);
+	ethnla_nest_end(msgbuff, bitset_attr);
+	return 0;
+err:
+	ethnla_nest_cancel(msgbuff, bitset_attr);
+	return ret;
+}
+
+static bool is_char_bitset(const char *arg,
+			   const struct char_bitset_parser_data *data)
+{
+	bool mask = (arg[0] == '+' || arg[0] == '-');
+	unsigned int i;
+	const char *p;
+
+	for (p = arg; *p; p++) {
+		if (*p == data->reset_char)
+			continue;
+		if (mask && (*p == '+' || *p == '-'))
+			continue;
+		for (i = 0; i < data->nbits; i++)
+			if (*p == data->bit_chars[i])
+				goto found;
+		return false;
+found:
+		;
+	}
+
+	return true;
+}
+
+/* Parse bitset provided as a string consisting of characters corresponding to
+ * bit indices. The "reset character" resets the no-mask bitset to empty. If
+ * the first character is '+' or '-', generated bitset has mask and '+' and
+ * '-' switch between enabling and disabling the following bits (i.e. their
+ * value being true/false). In such case, "reset character" is not allowed.
+ */
+static int parse_char_bitset(struct nl_context *nlctx, uint16_t type,
+			     const struct char_bitset_parser_data *data,
+			     struct nl_msg_buff *msgbuff)
+{
+	const char *arg = *nlctx->argp;
+	struct nlattr *bitset_attr;
+	struct nlattr *saved_pos;
+	struct nlattr *bits_attr;
+	struct nlattr *bit_attr;
+	unsigned int idx;
+	bool val = true;
+	const char *p;
+	bool no_mask;
+	int ret;
+
+	no_mask = data->no_mask || !(arg[0] == '+' || arg[0] == '-');
+	bitset_attr = ethnla_nest_start(msgbuff, type);
+	if (!bitset_attr)
+		return -EMSGSIZE;
+	ret = -EMSGSIZE;
+	if (no_mask && ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_NOMASK, true))
+		goto err;
+	bits_attr = ethnla_nest_start(msgbuff, ETHTOOL_A_BITSET_BITS);
+	if (!bits_attr)
+		goto err;
+	saved_pos = mnl_nlmsg_get_payload_tail(msgbuff->nlhdr);
+
+	for (p = arg; *p; p++) {
+		if (*p == '+' || *p == '-') {
+			if (no_mask) {
+				parser_err_invalid_value(nlctx, arg);
+				ret = -EINVAL;
+				goto err;
+			}
+			val = (*p == '+');
+			continue;
+		}
+		if (*p == data->reset_char) {
+			if (no_mask) {
+				mnl_attr_nest_cancel(msgbuff->nlhdr, saved_pos);
+				continue;
+			}
+			fprintf(stderr, "ethtool (%s): invalid char '%c' in '%s' for parameter '%s'\n",
+				nlctx->cmd, *p, arg, nlctx->param);
+			ret = -EINVAL;
+			goto err;
+		}
+
+		for (idx = 0; idx < data->nbits; idx++) {
+			if (data->bit_chars[idx] == *p)
+				break;
+		}
+		if (idx >= data->nbits) {
+			fprintf(stderr, "ethtool (%s): invalid char '%c' in '%s' for parameter '%s'\n",
+				nlctx->cmd, *p, arg, nlctx->param);
+			ret = -EINVAL;
+			goto err;
+		}
+		bit_attr = ethnla_nest_start(msgbuff,
+					     ETHTOOL_A_BITSET_BITS_BIT);
+		if (!bit_attr)
+			goto err;
+		if (ethnla_put_u32(msgbuff, ETHTOOL_A_BITSET_BIT_INDEX, idx))
+			goto err;
+		if (!no_mask &&
+		    ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_BIT_VALUE, val))
+			goto err;
+		ethnla_nest_end(msgbuff, bit_attr);
+	}
+
+	ethnla_nest_end(msgbuff, bits_attr);
+	ethnla_nest_end(msgbuff, bitset_attr);
+	nlctx->argp++;
+	nlctx->argc--;
+	return 0;
+err:
+	ethnla_nest_cancel(msgbuff, bitset_attr);
+	return ret;
+}
+
+/* Parser handler for bitset. Expects either a numeric value (base 16 or 10
+ * (unless force_hex is set)), optionally followed by '/' and another numeric
+ * value (mask, unless no_mask is set), or a series of "name on|off" pairs
+ * (no_mask not set) or names (no_mask set). In the latter case, names are
+ * passed on as they are and kernel performs their interpretation and
+ * validation. The @data parameter points to struct bitset_parser_data.
+ * Generates only a bitset nested attribute. Fails if @type is zero or @dest
+ * is not null.
+ */
+int nl_parse_bitset(struct nl_context *nlctx, uint16_t type, const void *data,
+		    struct nl_msg_buff *msgbuff, void *dest)
+{
+	const struct bitset_parser_data *parser_data = data;
+
+	if (!type || dest) {
+		fprintf(stderr, "ethtool (%s): internal error parsing '%s'\n",
+			nlctx->cmd, nlctx->param);
+		return -EFAULT;
+	}
+	if (is_numeric_bitset(*nlctx->argp, false))
+		return parse_numeric_bitset(nlctx, type, parser_data->no_mask,
+					    parser_data->force_hex, msgbuff);
+	else
+		return parse_name_bitset(nlctx, type, parser_data->no_mask,
+					 msgbuff);
+}
+
+/* Parser handler for bitset. Expects either a numeric value (base 10 or 16),
+ * optionally followed by '/' and another numeric value (mask, unless no_mask
+ * is set), or a string consisting of characters corresponding to bit indices.
+ * The @data parameter points to struct char_bitset_parser_data. Generates
+ * biset nested attribute. Fails if type is zero or if @dest is not null.
+ */
+int nl_parse_char_bitset(struct nl_context *nlctx, uint16_t type,
+			 const void *data, struct nl_msg_buff *msgbuff,
+			 void *dest)
+{
+	const struct char_bitset_parser_data *parser_data = data;
+
+	if (!type || dest) {
+		fprintf(stderr, "ethtool (%s): internal error parsing '%s'\n",
+			nlctx->cmd, nlctx->param);
+		return -EFAULT;
+	}
+	if (is_char_bitset(*nlctx->argp, data) ||
+	    !is_numeric_bitset(*nlctx->argp, false))
+		return parse_char_bitset(nlctx, type, parser_data, msgbuff);
+	else
+		return parse_numeric_bitset(nlctx, type, parser_data->no_mask,
+					    false, msgbuff);
+}
+
+/* parser implementation */
+
+static const struct param_parser *find_parser(const struct param_parser *params,
+					      const char *arg)
+{
+	const struct param_parser *parser;
+
+	for (parser = params; parser->arg; parser++)
+		if (!strcmp(arg, parser->arg))
+			return parser;
+	return NULL;
+}
+
+static bool __parser_bit(const uint64_t *map, unsigned int idx)
+{
+	return map[idx / 64] & (1 << (idx % 64));
+}
+
+static void __parser_set(uint64_t *map, unsigned int idx)
+{
+	map[idx / 64] |= (1 << (idx % 64));
+}
+
+static void __parser_set_group(const struct param_parser *params,
+			       uint64_t *map, unsigned int alt_group)
+{
+	const struct param_parser *parser;
+	unsigned int idx = 0;
+
+	for (parser = params; parser->arg; parser++, idx++)
+		if (parser->alt_group == alt_group)
+			__parser_set(map, idx);
+}
+
+struct tmp_buff {
+	struct nl_msg_buff	*msgbuff;
+	unsigned int		id;
+	unsigned int		orig_len;
+	struct tmp_buff		*next;
+};
+
+static struct tmp_buff *tmp_buff_find(struct tmp_buff *head, unsigned int id)
+{
+	struct tmp_buff *buff;
+
+	for (buff = head; buff; buff = buff->next)
+		if (buff->id == id)
+			break;
+
+	return buff;
+}
+
+static struct tmp_buff *tmp_buff_find_or_create(struct tmp_buff **phead,
+						unsigned int id)
+{
+	struct tmp_buff **pbuff;
+	struct tmp_buff *new_buff;
+
+	for (pbuff = phead; *pbuff; pbuff = &(*pbuff)->next)
+		if ((*pbuff)->id == id)
+			return *pbuff;
+
+	new_buff = malloc(sizeof(*new_buff));
+	if (!new_buff)
+		return NULL;
+	new_buff->id = id;
+	new_buff->msgbuff = malloc(sizeof(*new_buff->msgbuff));
+	if (!new_buff->msgbuff) {
+		free(new_buff);
+		return NULL;
+	}
+	msgbuff_init(new_buff->msgbuff);
+	new_buff->next = NULL;
+	*pbuff = new_buff;
+
+	return new_buff;
+}
+
+static void tmp_buff_destroy(struct tmp_buff *head)
+{
+	struct tmp_buff *buff = head;
+	struct tmp_buff *next;
+
+	while (buff) {
+		next = buff->next;
+		if (buff->msgbuff) {
+			msgbuff_done(buff->msgbuff);
+			free(buff->msgbuff);
+		}
+		free(buff);
+		buff = next;
+	}
+}
+
+/* Main entry point of parser implementation.
+ * @nlctx: netlink context
+ * @params:      array of struct param_parser describing expected arguments
+ *               and their handlers; the array must be terminated by null
+ *               element {}
+ * @dest:        optional destination to copy parsed data to (at
+ *               param_parser::offset)
+ * @group_style: defines if identifiers in .group represent separate messages,
+ *               nested attributes or are not allowed
+ * @msgbuffs:    (only used for @group_style = PARSER_GROUP_MSG) array to store
+ *               pointers to composed messages; caller must make sure this
+ *               array is sufficient, i.e. that it has at least as many entries
+ *               as the number of different .group values in params array;
+ *               entries are filled from the start, remaining entries are not
+ *               modified; caller should zero initialize the array before
+ *               calling nl_parser()
+ */
+int nl_parser(struct nl_context *nlctx, const struct param_parser *params,
+	      void *dest, enum parser_group_style group_style,
+	      struct nl_msg_buff **msgbuffs)
+{
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	const struct param_parser *parser;
+	struct tmp_buff *buffs = NULL;
+	unsigned int n_msgbuffs = 0;
+	struct tmp_buff *buff;
+	unsigned int n_params;
+	uint64_t *params_seen;
+	int ret;
+
+	n_params = 0;
+	for (parser = params; parser->arg; parser++) {
+		struct nl_msg_buff *msgbuff;
+		struct nlattr *nest;
+
+		n_params++;
+		if (group_style == PARSER_GROUP_NONE || !parser->group)
+			continue;
+		ret = -ENOMEM;
+		buff = tmp_buff_find_or_create(&buffs, parser->group);
+		if (!buff)
+			goto out_free_buffs;
+		msgbuff = buff->msgbuff;
+		ret = msg_init(nlctx, msgbuff, parser->group,
+			       NLM_F_REQUEST | NLM_F_ACK);
+		if (ret < 0)
+			goto out_free_buffs;
+
+		switch (group_style) {
+		case PARSER_GROUP_NEST:
+			ret = -EMSGSIZE;
+			nest = ethnla_nest_start(buff->msgbuff, parser->group);
+			if (!nest)
+				goto out_free_buffs;
+			break;
+		case PARSER_GROUP_MSG:
+			if (ethnla_fill_header(msgbuff,
+					       ETHTOOL_A_LINKINFO_HEADER,
+					       nlctx->devname, 0))
+				goto out_free_buffs;
+			break;
+		default:
+			break;
+		}
+
+		buff->orig_len = msgbuff_len(msgbuff);
+	}
+	ret = -ENOMEM;
+	params_seen = calloc(DIV_ROUND_UP(n_params, 64), sizeof(uint64_t));
+	if (!params_seen)
+		goto out_free_buffs;
+
+	while (nlctx->argc > 0) {
+		struct nl_msg_buff *msgbuff;
+		void *param_dest;
+
+		nlctx->param = *nlctx->argp;
+		ret = -EINVAL;
+		parser = find_parser(params, nlctx->param);
+		if (!parser) {
+			parser_err_unknown_param(nlctx);
+			goto out_free;
+		}
+
+		/* check duplicates and minimum number of arguments */
+		if (__parser_bit(params_seen, parser - params)) {
+			parser_err_dup_param(nlctx);
+			goto out_free;
+		}
+		nlctx->argc--;
+		nlctx->argp++;
+		if (nlctx->argc < parser->min_argc) {
+			parser_err_min_argc(nlctx, parser->min_argc);
+			goto out_free;
+		}
+		if (parser->alt_group)
+			__parser_set_group(params, params_seen,
+					   parser->alt_group);
+		else
+			__parser_set(params_seen, parser - params);
+
+		buff = NULL;
+		if (parser->group)
+			buff = tmp_buff_find(buffs, parser->group);
+		msgbuff = buff ? buff->msgbuff : &nlsk->msgbuff;
+
+		param_dest = dest ? ((char *)dest + parser->dest_offset) : NULL;
+		ret = parser->handler(nlctx, parser->type, parser->handler_data,
+				      msgbuff, param_dest);
+		if (ret < 0)
+			goto out_free;
+	}
+
+	if (group_style == PARSER_GROUP_MSG) {
+		ret = -EOPNOTSUPP;
+		for (buff = buffs; buff; buff = buff->next)
+			if (msgbuff_len(buff->msgbuff) > buff->orig_len &&
+			    netlink_cmd_check(nlctx->ctx, buff->id, false))
+				goto out_free;
+	}
+	for (buff = buffs; buff; buff = buff->next) {
+		struct nl_msg_buff *msgbuff = buff->msgbuff;
+
+		if (group_style == PARSER_GROUP_NONE ||
+		    msgbuff_len(msgbuff) == buff->orig_len)
+			continue;
+		switch (group_style) {
+		case PARSER_GROUP_NEST:
+			ethnla_nest_end(msgbuff, msgbuff->payload);
+			ret = msgbuff_append(&nlsk->msgbuff, msgbuff);
+			if (ret < 0)
+				goto out_free;
+			break;
+		case PARSER_GROUP_MSG:
+			msgbuffs[n_msgbuffs++] = msgbuff;
+			buff->msgbuff = NULL;
+			break;
+		default:
+			break;
+		}
+	}
+
+	ret = 0;
+out_free:
+	free(params_seen);
+out_free_buffs:
+	tmp_buff_destroy(buffs);
+	return ret;
+}
diff --git a/netlink/parser.h b/netlink/parser.h
new file mode 100644
index 0000000..8a4e8af
--- /dev/null
+++ b/netlink/parser.h
@@ -0,0 +1,153 @@
+/*
+ * parser.h - netlink command line parser
+ *
+ * Interface for command line parser used by netlink code.
+ */
+
+#ifndef ETHTOOL_NETLINK_PARSER_H__
+#define ETHTOOL_NETLINK_PARSER_H__
+
+#include <stddef.h>
+
+#include "netlink.h"
+
+/* Some commands need to generate multiple netlink messages or multiple nested
+ * attributes from one set of command line parameters. Argument @group_style
+ * of nl_parser() takes one of three values:
+ *
+ * PARSER_GROUP_NONE - no grouping, flat series of attributes (default)
+ * PARSER_GROUP_NEST - one nest for each @group value (@group is nest type)
+ * PARSER_GROUP_MSG  - one message for each @group value (@group is command)
+ */
+enum parser_group_style {
+	PARSER_GROUP_NONE = 0,
+	PARSER_GROUP_NEST,
+	PARSER_GROUP_MSG,
+};
+
+typedef int (*param_parser_cb_t)(struct nl_context *, uint16_t, const void *,
+				 struct nl_msg_buff *, void *);
+
+struct param_parser {
+	/* command line parameter handled by this entry */
+	const char		*arg;
+	/* group id (see enum parser_group_style above) */
+	unsigned int		group;
+	/* netlink attribute type */
+	uint16_t		type;		/* netlink attribute type */
+	/* function called to parse parameter and its value */
+	param_parser_cb_t	handler;
+	/* pointer passed as @data argument of the handler */
+	const void		*handler_data;
+	/* minimum number of extra arguments after this parameter */
+	unsigned int		min_argc;
+	/* if @dest is passed to nl_parser(), offset to store value */
+	unsigned int		dest_offset;
+	/* parameter alternative group - only one parameter from a group
+	 * can be specified, 0 means no group
+	 */
+	unsigned int		alt_group;
+};
+
+/* data structures used for handler data */
+
+/* used by nl_parse_lookup_u32() */
+struct lookup_entry_u32 {
+	const char	*arg;
+	uint32_t	val;
+};
+
+/* used by nl_parse_lookup_u8() */
+struct lookup_entry_u8 {
+	const char	*arg;
+	uint8_t		val;
+};
+
+/* used by nl_parse_byte_str() */
+struct byte_str_parser_data {
+	unsigned int	min_len;
+	unsigned int	max_len;
+	char		delim;
+};
+
+/* used for value stored by nl_parse_byte_str() */
+struct byte_str_value {
+	unsigned int	len;
+	u8		*data;
+};
+
+/* used by nl_parse_error() */
+struct error_parser_data {
+	const char	*err_msg;
+	int		ret_val;
+	unsigned int	extra_args;
+};
+
+/* used by nl_parse_bitset() */
+struct bitset_parser_data {
+	bool		force_hex;
+	bool		no_mask;
+};
+
+/* used by nl_parse_char_bitset() */
+struct char_bitset_parser_data {
+	const char	*bit_chars;
+	unsigned int	nbits;
+	char		reset_char;
+	bool		no_mask;
+};
+
+int parse_u32(const char *arg, uint32_t *result);
+
+/* parser handlers to use as param_parser::handler */
+
+/* NLA_FLAG represented by on | off */
+int nl_parse_flag(struct nl_context *nlctx, uint16_t type, const void *data,
+		  struct nl_msg_buff *msgbuff, void *dest);
+/* NLA_NUL_STRING represented by a string argument */
+int nl_parse_string(struct nl_context *nlctx, uint16_t type, const void *data,
+		    struct nl_msg_buff *msgbuff, void *dest);
+/* NLA_U32 represented as numeric argument */
+int nl_parse_direct_u32(struct nl_context *nlctx, uint16_t type,
+			const void *data, struct nl_msg_buff *msgbuff,
+			void *dest);
+/* NLA_U8 represented as numeric argument */
+int nl_parse_direct_u8(struct nl_context *nlctx, uint16_t type,
+		       const void *data, struct nl_msg_buff *msgbuff,
+		       void *dest);
+/* NLA_U32 represented as float number of meters, converted to cm. */
+int nl_parse_direct_m2cm(struct nl_context *nlctx, uint16_t type,
+			 const void *data, struct nl_msg_buff *msgbuff,
+			 void *dest);
+/* NLA_U8 represented as on | off */
+int nl_parse_u8bool(struct nl_context *nlctx, uint16_t type, const void *data,
+		    struct nl_msg_buff *msgbuff, void *dest);
+/* NLA_U32 represented by a string argument (lookup table) */
+int nl_parse_lookup_u32(struct nl_context *nlctx, uint16_t type,
+			const void *data, struct nl_msg_buff *msgbuff,
+			void *dest);
+/* NLA_U8 represented by a string argument (lookup table) */
+int nl_parse_lookup_u8(struct nl_context *nlctx, uint16_t type,
+		       const void *data, struct nl_msg_buff *msgbuff,
+		       void *dest);
+/* always fail (for deprecated parameters) */
+int nl_parse_error(struct nl_context *nlctx, uint16_t type, const void *data,
+		   struct nl_msg_buff *msgbuff, void *dest);
+/* NLA_BINARY represented by %x:%x:...%x (e.g. a MAC address) */
+int nl_parse_byte_str(struct nl_context *nlctx, uint16_t type,
+		      const void *data, struct nl_msg_buff *msgbuff,
+		      void *dest);
+/* bitset represented by %x[/%x] or name on|off ... [--] */
+int nl_parse_bitset(struct nl_context *nlctx, uint16_t type, const void *data,
+		    struct nl_msg_buff *msgbuff, void *dest);
+/* bitset represented by %u[/%u] or string (characters for bits) */
+int nl_parse_char_bitset(struct nl_context *nlctx, uint16_t type,
+			 const void *data, struct nl_msg_buff *msgbuff,
+			 void *dest);
+
+/* main entry point called to parse the command line */
+int nl_parser(struct nl_context *nlctx, const struct param_parser *params,
+	      void *dest, enum parser_group_style group_style,
+	      struct nl_msg_buff **msgbuffs);
+
+#endif /* ETHTOOL_NETLINK_PARSER_H__ */
diff --git a/netlink/pause.c b/netlink/pause.c
new file mode 100644
index 0000000..867d0da
--- /dev/null
+++ b/netlink/pause.c
@@ -0,0 +1,308 @@
+/*
+ * pause.c - netlink implementation of pause commands
+ *
+ * Implementation of "ethtool -a <dev>" and "ethtool -A <dev> ..."
+ */
+
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* PAUSE_GET */
+
+struct pause_autoneg_status {
+	bool	pause;
+	bool	asym_pause;
+};
+
+static void pause_autoneg_walker(unsigned int idx,
+				 const char *name __maybe_unused, bool val,
+				 void *data)
+{
+	struct pause_autoneg_status *status = data;
+
+	if (idx == ETHTOOL_LINK_MODE_Pause_BIT)
+		status->pause = val;
+	if (idx == ETHTOOL_LINK_MODE_Asym_Pause_BIT)
+		status->asym_pause = val;
+}
+
+static int pause_autoneg_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct pause_autoneg_status ours = {};
+	struct pause_autoneg_status peer = {};
+	struct nl_context *nlctx = data;
+	uint8_t rx_status = false;
+	uint8_t tx_status = false;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+
+	if (!tb[ETHTOOL_A_LINKMODES_OURS] || !tb[ETHTOOL_A_LINKMODES_PEER])
+		return MNL_CB_OK;
+	ret = walk_bitset(tb[ETHTOOL_A_LINKMODES_OURS], NULL,
+			  pause_autoneg_walker, &ours);
+	if (ret < 0)
+		return err_ret;
+	ret = walk_bitset(tb[ETHTOOL_A_LINKMODES_PEER], NULL,
+			  pause_autoneg_walker, &peer);
+	if (ret < 0)
+		return err_ret;
+
+	if (ours.pause && peer.pause) {
+		rx_status = true;
+		tx_status = true;
+	} else if (ours.asym_pause && peer.asym_pause) {
+		if (ours.pause)
+			rx_status = true;
+		else if (peer.pause)
+			tx_status = true;
+	}
+
+	open_json_object("negotiated");
+	show_bool_val("rx", "RX negotiated: %s\n", &rx_status);
+	show_bool_val("tx", "TX negotiated: %s\n", &tx_status);
+	close_json_object();
+
+	return MNL_CB_OK;
+}
+
+static int show_pause_autoneg_status(struct nl_context *nlctx)
+{
+	const char *saved_devname;
+	int ret;
+
+	saved_devname = nlctx->ctx->devname;
+	nlctx->ctx->devname = nlctx->devname;
+	ret = netlink_init_ethnl2_socket(nlctx);
+	if (ret < 0)
+		goto out;
+
+	ret = nlsock_prep_get_request(nlctx->ethnl2_socket,
+				      ETHTOOL_MSG_LINKMODES_GET,
+				      ETHTOOL_A_LINKMODES_HEADER,
+				      ETHTOOL_FLAG_COMPACT_BITSETS);
+	if (ret < 0)
+		goto out;
+	ret = nlsock_send_get_request(nlctx->ethnl2_socket, pause_autoneg_cb);
+
+out:
+	nlctx->ctx->devname = saved_devname;
+	return ret;
+}
+
+static int show_pause_stats(const struct nlattr *nest)
+{
+	const struct nlattr *tb[ETHTOOL_A_PAUSE_STAT_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	static const struct {
+		unsigned int attr;
+		char *name;
+	} stats[] = {
+		{ ETHTOOL_A_PAUSE_STAT_TX_FRAMES, "tx_pause_frames" },
+		{ ETHTOOL_A_PAUSE_STAT_RX_FRAMES, "rx_pause_frames" },
+	};
+	bool header = false;
+	unsigned int i;
+	size_t n;
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+
+	open_json_object("statistics");
+	for (i = 0; i < ARRAY_SIZE(stats); i++) {
+		char fmt[32];
+
+		if (!tb[stats[i].attr])
+			continue;
+
+		if (!header && !is_json_context()) {
+			printf("Statistics:\n");
+			header = true;
+		}
+
+		if (mnl_attr_validate(tb[stats[i].attr], MNL_TYPE_U64)) {
+			fprintf(stderr, "malformed netlink message (statistic)\n");
+			goto err_close_stats;
+		}
+
+		n = snprintf(fmt, sizeof(fmt), "  %s: %%" PRIu64 "\n",
+			     stats[i].name);
+		if (n >= sizeof(fmt)) {
+			fprintf(stderr, "internal error - malformed label\n");
+			goto err_close_stats;
+		}
+
+		print_u64(PRINT_ANY, stats[i].name, fmt,
+			  mnl_attr_get_u64(tb[stats[i].attr]));
+	}
+	close_json_object();
+
+	return 0;
+
+err_close_stats:
+	close_json_object();
+	return -1;
+}
+
+int pause_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_PAUSE_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_PAUSE_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		print_nl();
+
+	open_json_object(NULL);
+
+	print_string(PRINT_ANY, "ifname", "Pause parameters for %s:\n",
+		     nlctx->devname);
+
+	show_bool("autonegotiate", "Autonegotiate:\t%s\n",
+		  tb[ETHTOOL_A_PAUSE_AUTONEG]);
+	show_bool("rx", "RX:\t\t%s\n", tb[ETHTOOL_A_PAUSE_RX]);
+	show_bool("tx", "TX:\t\t%s\n", tb[ETHTOOL_A_PAUSE_TX]);
+
+	if (!nlctx->is_monitor && tb[ETHTOOL_A_PAUSE_AUTONEG] &&
+	    mnl_attr_get_u8(tb[ETHTOOL_A_PAUSE_AUTONEG])) {
+		ret = show_pause_autoneg_status(nlctx);
+		if (ret < 0)
+			goto err_close_dev;
+	}
+	if (tb[ETHTOOL_A_PAUSE_STATS]) {
+		ret = show_pause_stats(tb[ETHTOOL_A_PAUSE_STATS]);
+		if (ret < 0)
+			goto err_close_dev;
+	}
+	if (!silent)
+		print_nl();
+
+	close_json_object();
+
+	return MNL_CB_OK;
+
+err_close_dev:
+	close_json_object();
+	return err_ret;
+}
+
+int nl_gpause(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	u32 flags;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PAUSE_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	flags = get_stats_flag(nlctx, ETHTOOL_MSG_PAUSE_GET,
+			       ETHTOOL_A_PAUSE_HEADER);
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_PAUSE_GET,
+				      ETHTOOL_A_PAUSE_HEADER, flags);
+	if (ret < 0)
+		return ret;
+
+	new_json_obj(ctx->json);
+	ret = nlsock_send_get_request(nlsk, pause_reply_cb);
+	delete_json_obj();
+	return ret;
+}
+
+/* PAUSE_SET */
+
+static const struct param_parser spause_params[] = {
+	{
+		.arg		= "autoneg",
+		.type		= ETHTOOL_A_PAUSE_AUTONEG,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx",
+		.type		= ETHTOOL_A_PAUSE_RX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx",
+		.type		= ETHTOOL_A_PAUSE_TX,
+		.handler	= nl_parse_u8bool,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+int nl_spause(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PAUSE_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-A";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_PAUSE_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_PAUSE_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, spause_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 76;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 76;
+}
diff --git a/netlink/permaddr.c b/netlink/permaddr.c
new file mode 100644
index 0000000..006eac6
--- /dev/null
+++ b/netlink/permaddr.c
@@ -0,0 +1,114 @@
+/*
+ * permaddr.c - netlink implementation of permanent address request
+ *
+ * Implementation of "ethtool -P <dev>"
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_link.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+
+/* PERMADDR_GET */
+
+static int permaddr_prep_request(struct nl_socket *nlsk)
+{
+	unsigned int nlm_flags = NLM_F_REQUEST | NLM_F_ACK;
+	struct nl_context *nlctx = nlsk->nlctx;
+	const char *devname = nlctx->ctx->devname;
+	struct nl_msg_buff *msgbuff = &nlsk->msgbuff;
+	struct ifinfomsg *ifinfo;
+	struct nlmsghdr *nlhdr;
+	int ret;
+
+	if (devname && !strcmp(devname, WILDCARD_DEVNAME)) {
+		devname = NULL;
+		nlm_flags |= NLM_F_DUMP;
+	}
+	nlctx->is_dump = !devname;
+
+        ret = msgbuff_realloc(msgbuff, MNL_SOCKET_BUFFER_SIZE);
+        if (ret < 0)
+                return ret;
+        memset(msgbuff->buff, '\0', NLMSG_HDRLEN + sizeof(*ifinfo));
+
+	nlhdr = mnl_nlmsg_put_header(msgbuff->buff);
+	nlhdr->nlmsg_type = RTM_GETLINK;
+	nlhdr->nlmsg_flags = nlm_flags;
+	msgbuff->nlhdr = nlhdr;
+	ifinfo = mnl_nlmsg_put_extra_header(nlhdr, sizeof(*ifinfo));
+
+	if (devname) {
+		uint16_t type = IFLA_IFNAME;
+
+		if (strlen(devname) >= IFNAMSIZ)
+			type = IFLA_ALT_IFNAME;
+		if (ethnla_put_strz(msgbuff, type, devname))
+			return -EMSGSIZE;
+	}
+	if (ethnla_put_u32(msgbuff, IFLA_EXT_MASK, RTEXT_FILTER_SKIP_STATS))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+int permaddr_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[__IFLA_MAX] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	const uint8_t *permaddr;
+	unsigned int i;
+	int ret;
+
+	if (nlhdr->nlmsg_type != RTM_NEWLINK)
+		goto err;
+	ret = mnl_attr_parse(nlhdr, sizeof(struct ifinfomsg), attr_cb,
+			     &tb_info);
+	if (ret < 0 || !tb[IFLA_IFNAME])
+		goto err;
+	nlctx->devname = mnl_attr_get_str(tb[IFLA_IFNAME]);
+	if (!dev_ok(nlctx))
+		goto err;
+
+	if (!tb[IFLA_PERM_ADDRESS]) {
+		if (!nlctx->is_dump)
+			printf("Permanent address: not set\n");
+		return MNL_CB_OK;
+	}
+
+	if (nlctx->is_dump)
+		printf("Permanent address of %s:", nlctx->devname);
+	else
+		printf("Permanent address:");
+	permaddr = mnl_attr_get_payload(tb[IFLA_PERM_ADDRESS]);
+	for (i = 0; i < mnl_attr_get_payload_len(tb[IFLA_PERM_ADDRESS]); i++)
+		printf("%c%02x", i ? ':' : ' ', permaddr[i]);
+	putchar('\n');
+	return MNL_CB_OK;
+
+err:
+	if (nlctx->is_dump || nlctx->is_monitor)
+		return MNL_CB_OK;
+	nlctx->exit_code = 2;
+	return MNL_CB_ERROR;
+}
+
+int nl_permaddr(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	int ret;
+
+	ret = netlink_init_rtnl_socket(nlctx);
+	if (ret < 0)
+		return ret;
+	ret = permaddr_prep_request(nlctx->rtnl_socket);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlctx->rtnl_socket, permaddr_reply_cb);
+}
diff --git a/netlink/prettymsg.c b/netlink/prettymsg.c
new file mode 100644
index 0000000..fbf684f
--- /dev/null
+++ b/netlink/prettymsg.c
@@ -0,0 +1,262 @@
+/*
+ * prettymsg.c - human readable message dump
+ *
+ * Support for pretty print of an ethtool netlink message
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdint.h>
+#include <limits.h>
+#include <inttypes.h>
+#include <linux/genetlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_link.h>
+#include <libmnl/libmnl.h>
+
+#include "prettymsg.h"
+
+#define __INDENT 4
+#define __DUMP_LINE 16
+#define __DUMP_BLOCK 4
+
+static void __print_binary_short(uint8_t *adata, unsigned int alen)
+{
+	unsigned int i;
+
+	if (!alen)
+		return;
+	printf("%02x", adata[0]);
+	for (i = 1; i < alen; i++)
+		printf("%c%02x", (i % __DUMP_BLOCK) ? ':' : ' ',  adata[i]);
+}
+
+static void __print_binary_long(uint8_t *adata, unsigned int alen,
+				unsigned int level)
+{
+	unsigned int i;
+
+	for (i = 0; i < alen; i++) {
+		if (i % __DUMP_LINE == 0)
+			printf("\n%*s", __INDENT * (level + 2), "");
+		else if (i % __DUMP_BLOCK == 0)
+			printf("  ");
+		else
+			putchar(' ');
+		printf("%02x", adata[i]);
+	}
+}
+
+static int pretty_print_attr(const struct nlattr *attr,
+			     const struct pretty_nla_desc *desc,
+			     unsigned int ndesc, unsigned int level,
+			     int err_offset, bool in_array)
+{
+	unsigned int alen = mnl_attr_get_payload_len(attr);
+	unsigned int atype = mnl_attr_get_type(attr);
+	unsigned int desc_idx = in_array ? 0 : atype;
+	void *adata = mnl_attr_get_payload(attr);
+	const struct pretty_nla_desc *adesc;
+	const char *prefix = "    ";
+	bool nested;
+
+	adesc = (desc && desc_idx < ndesc) ? &desc[desc_idx] : NULL;
+	nested = (adesc && (adesc->format == NLA_NESTED ||
+			    adesc->format == NLA_ARRAY)) ||
+		 (attr->nla_type & NLA_F_NESTED);
+	if (err_offset >= 0 &&
+	    err_offset < (nested ? NLA_HDRLEN : attr->nla_len)) {
+		prefix = "===>";
+		if (err_offset)
+			fprintf(stderr,
+				"ethtool: bad_attr inside an attribute (offset %d)\n",
+				err_offset);
+	}
+	if (adesc && adesc->name && !in_array)
+		printf("%s%*s%s", prefix, level * __INDENT, "", adesc->name);
+	else
+		printf("%s%*s[%u]", prefix, level * __INDENT, "", atype);
+
+	if (nested) {
+		struct nlattr *child;
+		int ret = 0;
+
+		putchar('\n');
+		mnl_attr_for_each_nested(child, attr) {
+			bool array = adesc && adesc->format == NLA_ARRAY;
+			unsigned int child_off;
+
+			child_off = (const char *)child - (const char *)attr;
+			ret = pretty_print_attr(child,
+						adesc ? adesc->children : NULL,
+						adesc ? adesc->n_children : 0,
+						level + 1,
+						err_offset - child_off, array);
+			if (ret < 0)
+				break;
+		}
+
+		return ret;
+	}
+
+	printf(" = ");
+	switch(adesc ? adesc->format : NLA_BINARY) {
+	case NLA_U8:
+		printf("%u", mnl_attr_get_u8(attr));
+		break;
+	case NLA_U16:
+		printf("%u", mnl_attr_get_u16(attr));
+		break;
+	case NLA_U32:
+		printf("%u", mnl_attr_get_u32(attr));
+		break;
+	case NLA_U64:
+		printf("%" PRIu64, mnl_attr_get_u64(attr));
+		break;
+	case NLA_X8:
+		printf("0x%02x", mnl_attr_get_u8(attr));
+		break;
+	case NLA_X16:
+		printf("0x%04x", mnl_attr_get_u16(attr));
+		break;
+	case NLA_X32:
+		printf("0x%08x", mnl_attr_get_u32(attr));
+		break;
+	case NLA_X64:
+		printf("%" PRIx64, mnl_attr_get_u64(attr));
+		break;
+	case NLA_S8:
+		printf("%d", (int)mnl_attr_get_u8(attr));
+		break;
+	case NLA_S16:
+		printf("%d", (int)mnl_attr_get_u16(attr));
+		break;
+	case NLA_S32:
+		printf("%d", (int)mnl_attr_get_u32(attr));
+		break;
+	case NLA_S64:
+		printf("%" PRId64, (int64_t)mnl_attr_get_u64(attr));
+		break;
+	case NLA_STRING:
+		printf("\"%.*s\"", alen, (const char *)adata);
+		break;
+	case NLA_FLAG:
+		printf("true");
+		break;
+	case NLA_BOOL:
+		printf("%s", mnl_attr_get_u8(attr) ? "on" : "off");
+		break;
+	case NLA_U8_ENUM:
+	case NLA_U32_ENUM: {
+		uint32_t val;
+
+		if (adesc->format == NLA_U8_ENUM)
+			val = mnl_attr_get_u8(attr);
+		else
+			val = mnl_attr_get_u32(attr);
+
+		if (adesc && val < adesc->n_names && adesc->names[val])
+			printf("%s", adesc->names[val]);
+		else
+			printf("%u", val);
+		break;
+	}
+	default:
+		if (alen <= __DUMP_LINE)
+			__print_binary_short(adata, alen);
+		else
+			__print_binary_long(adata, alen, level);
+	}
+	putchar('\n');
+
+	return 0;
+}
+
+static int pretty_print_nlmsg(const struct nlmsghdr *nlhdr,
+			      unsigned int payload_offset,
+			      const struct pretty_nla_desc *desc,
+			      unsigned int ndesc, unsigned int err_offset)
+{
+	const struct nlattr *attr;
+	int attr_offset;
+	int ret;
+
+	mnl_attr_for_each(attr, nlhdr, payload_offset) {
+		attr_offset = (const char *)attr - (const char *)nlhdr;
+		ret = pretty_print_attr(attr, desc, ndesc, 1,
+					err_offset - attr_offset, false);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+int pretty_print_genlmsg(const struct nlmsghdr *nlhdr,
+			 const struct pretty_nlmsg_desc *desc,
+			 unsigned int ndesc, unsigned int err_offset)
+{
+	const struct pretty_nlmsg_desc *msg_desc;
+	const struct genlmsghdr *genlhdr;
+
+	if (mnl_nlmsg_get_payload_len(nlhdr) < GENL_HDRLEN) {
+		fprintf(stderr, "ethtool: message too short (%u bytes)\n",
+			nlhdr->nlmsg_len);
+		return -EINVAL;
+	}
+	genlhdr = mnl_nlmsg_get_payload(nlhdr);
+	msg_desc = (desc && genlhdr->cmd < ndesc) ? &desc[genlhdr->cmd] : NULL;
+	if (msg_desc && msg_desc->name)
+		printf("    %s\n", msg_desc->name);
+	else
+		printf("    [%u]\n", genlhdr->cmd);
+
+	return pretty_print_nlmsg(nlhdr, GENL_HDRLEN,
+				  msg_desc ? msg_desc->attrs : NULL,
+				  msg_desc ? msg_desc->n_attrs : 0, err_offset);
+}
+
+static void rtm_link_summary(const struct ifinfomsg *ifinfo)
+{
+	if (ifinfo->ifi_family)
+		printf(" family=%u", ifinfo->ifi_family);
+	if (ifinfo->ifi_type)
+		printf(" type=0x%04x", ifinfo->ifi_type);
+	if (ifinfo->ifi_index)
+		printf(" ifindex=%d", ifinfo->ifi_index);
+	if (ifinfo->ifi_flags)
+		printf(" flags=0x%x", ifinfo->ifi_flags);
+	if (ifinfo->ifi_change)
+		printf(" change=0x%x", ifinfo->ifi_change);
+}
+
+int pretty_print_rtnlmsg(const struct nlmsghdr *nlhdr, unsigned int err_offset)
+{
+	const unsigned int idx = (nlhdr->nlmsg_type - RTM_BASE) / 4;
+	const struct pretty_nlmsg_desc *msg_desc = NULL;
+	unsigned int hdrlen = USHRT_MAX;
+
+	if (nlhdr->nlmsg_type < rtnl_msg_n_desc)
+		msg_desc = &rtnl_msg_desc[nlhdr->nlmsg_type];
+	if (idx < rtnl_msghdr_n_len)
+		hdrlen = rtnl_msghdr_lengths[idx];
+	if (hdrlen < USHRT_MAX && mnl_nlmsg_get_payload_len(nlhdr) < hdrlen) {
+		fprintf(stderr, "ethtool: message too short (%u bytes)\n",
+			nlhdr->nlmsg_len);
+		return -EINVAL;
+	}
+	if (msg_desc && msg_desc->name)
+		printf("    %s", msg_desc->name);
+	else
+		printf("    [%u]", nlhdr->nlmsg_type);
+	if (idx == (RTM_NEWLINK - RTM_BASE) / 4)
+		rtm_link_summary(mnl_nlmsg_get_payload(nlhdr));
+	putchar('\n');
+	if (hdrlen == USHRT_MAX)
+		return 0;
+
+	return pretty_print_nlmsg(nlhdr, hdrlen,
+				  msg_desc ? msg_desc->attrs : NULL,
+				  msg_desc ? msg_desc->n_attrs : 0, err_offset);
+}
diff --git a/netlink/prettymsg.h b/netlink/prettymsg.h
new file mode 100644
index 0000000..8ca1db3
--- /dev/null
+++ b/netlink/prettymsg.h
@@ -0,0 +1,146 @@
+/*
+ * prettymsg.h - human readable message dump
+ *
+ * Support for pretty print of an ethtool netlink message
+ */
+
+#ifndef ETHTOOL_NETLINK_PRETTYMSG_H__
+#define ETHTOOL_NETLINK_PRETTYMSG_H__
+
+#include <linux/netlink.h>
+
+/* data structures for message format descriptions */
+
+enum pretty_nla_format {
+	NLA_INVALID,
+	NLA_BINARY,
+	NLA_U8,
+	NLA_U16,
+	NLA_U32,
+	NLA_U64,
+	NLA_X8,
+	NLA_X16,
+	NLA_X32,
+	NLA_X64,
+	NLA_S8,
+	NLA_S16,
+	NLA_S32,
+	NLA_S64,
+	NLA_STRING,
+	NLA_FLAG,
+	NLA_BOOL,
+	NLA_NESTED,
+	NLA_ARRAY,
+	NLA_U8_ENUM,
+	NLA_U32_ENUM,
+};
+
+struct pretty_nla_desc {
+	enum pretty_nla_format		format;
+	const char			*name;
+	union {
+		const struct pretty_nla_desc	*children;
+		const char			*const *names;
+	};
+	union {
+		unsigned int			n_children;
+		unsigned int			n_names;
+	};
+};
+
+struct pretty_nlmsg_desc {
+	const char			*name;
+	const struct pretty_nla_desc	*attrs;
+	unsigned int			n_attrs;
+};
+
+/* helper macros for message format descriptions */
+
+#define NLATTR_DESC(_name, _fmt) \
+	[_name] = { \
+		.format = _fmt, \
+		.name = #_name, \
+	}
+
+#define NLATTR_DESC_INVALID(_name)	NLATTR_DESC(_name, NLA_INVALID)
+#define NLATTR_DESC_U8(_name)		NLATTR_DESC(_name, NLA_U8)
+#define NLATTR_DESC_U16(_name)		NLATTR_DESC(_name, NLA_U16)
+#define NLATTR_DESC_U32(_name)		NLATTR_DESC(_name, NLA_U32)
+#define NLATTR_DESC_U64(_name)		NLATTR_DESC(_name, NLA_U64)
+#define NLATTR_DESC_X8(_name)		NLATTR_DESC(_name, NLA_X8)
+#define NLATTR_DESC_X16(_name)		NLATTR_DESC(_name, NLA_X16)
+#define NLATTR_DESC_X32(_name)		NLATTR_DESC(_name, NLA_X32)
+#define NLATTR_DESC_X64(_name)		NLATTR_DESC(_name, NLA_X64)
+#define NLATTR_DESC_S8(_name)		NLATTR_DESC(_name, NLA_U8)
+#define NLATTR_DESC_S16(_name)		NLATTR_DESC(_name, NLA_U16)
+#define NLATTR_DESC_S32(_name)		NLATTR_DESC(_name, NLA_U32)
+#define NLATTR_DESC_S64(_name)		NLATTR_DESC(_name, NLA_S64)
+#define NLATTR_DESC_STRING(_name)	NLATTR_DESC(_name, NLA_STRING)
+#define NLATTR_DESC_FLAG(_name)		NLATTR_DESC(_name, NLA_FLAG)
+#define NLATTR_DESC_BOOL(_name)		NLATTR_DESC(_name, NLA_BOOL)
+#define NLATTR_DESC_BINARY(_name)	NLATTR_DESC(_name, NLA_BINARY)
+
+#define NLATTR_DESC_NESTED(_name, _children_desc) \
+	[_name] = { \
+		.format = NLA_NESTED, \
+		.name = #_name, \
+		.children = __ ## _children_desc ## _desc, \
+		.n_children = ARRAY_SIZE(__ ## _children_desc ## _desc), \
+	}
+#define NLATTR_DESC_NESTED_NODESC(_name) NLATTR_DESC(_name, NLA_NESTED)
+#define NLATTR_DESC_ARRAY(_name, _children_desc) \
+	[_name] = { \
+		.format = NLA_ARRAY, \
+		.name = #_name, \
+		.children = __ ## _children_desc ## _desc, \
+		.n_children = 1, \
+	}
+#define NLATTR_DESC_U8_ENUM(_name, _names_table) \
+	[_name] = { \
+		.format = NLA_U8_ENUM, \
+		.name = #_name, \
+		.names = __ ## _names_table ## _names, \
+		.n_children = ARRAY_SIZE(__ ## _names_table ## _names), \
+	}
+#define NLATTR_DESC_U32_ENUM(_name, _names_table) \
+	[_name] = { \
+		.format = NLA_U32_ENUM, \
+		.name = #_name, \
+		.names = __ ## _names_table ## _names, \
+		.n_children = ARRAY_SIZE(__ ## _names_table ## _names), \
+	}
+
+#define NLMSG_DESC(_name, _attrs) \
+	[_name] = { \
+		.name = #_name, \
+		.attrs = __ ## _attrs ## _desc, \
+		.n_attrs = ARRAY_SIZE(__ ## _attrs ## _desc), \
+	}
+
+#define NLMSG_DESC_INVALID(_name) \
+	[_name] = { \
+		.name = #_name, \
+	}
+
+/* function to pretty print a genetlink message */
+int pretty_print_genlmsg(const struct nlmsghdr *nlhdr,
+			 const struct pretty_nlmsg_desc *desc,
+			 unsigned int ndesc, unsigned int err_offset);
+int pretty_print_rtnlmsg(const struct nlmsghdr *nlhdr, unsigned int err_offset);
+
+/* message descriptions */
+
+extern const struct pretty_nlmsg_desc ethnl_umsg_desc[];
+extern const unsigned int ethnl_umsg_n_desc;
+extern const struct pretty_nlmsg_desc ethnl_kmsg_desc[];
+extern const unsigned int ethnl_kmsg_n_desc;
+
+extern const struct pretty_nlmsg_desc genlctrl_msg_desc[];
+extern const unsigned int genlctrl_msg_n_desc;
+
+extern const struct pretty_nlmsg_desc rtnl_msg_desc[];
+extern const unsigned int rtnl_msg_n_desc;
+extern const unsigned short rtnl_msghdr_lengths[];
+extern const unsigned int rtnl_msghdr_n_len;
+
+#endif /* ETHTOOL_NETLINK_PRETTYMSG_H__ */
diff --git a/netlink/privflags.c b/netlink/privflags.c
new file mode 100644
index 0000000..299ccdc
--- /dev/null
+++ b/netlink/privflags.c
@@ -0,0 +1,158 @@
+/*
+ * privflags.c - netlink implementation of private flags commands
+ *
+ * Implementation of "ethtool --show-priv-flags <dev>" and
+ * "ethtool --set-priv-flags <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "strset.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* PRIVFLAGS_GET */
+
+static void privflags_maxlen_walk_cb(unsigned int idx, const char *name,
+				     bool val __maybe_unused, void *data)
+{
+	unsigned int *maxlen = data;
+	unsigned int len, n;
+
+	if (name)
+		len = strlen(name);
+	else {
+		len = 3; /* strlen("bit") */
+		for (n = idx ?: 1; n; n /= 10)
+			len++; /* plus number of ditigs */
+	}
+	if (len > *maxlen)
+		*maxlen = len;
+}
+
+static void privflags_dump_walk_cb(unsigned int idx, const char *name, bool val,
+				   void *data)
+{
+	unsigned int *maxlen = data;
+	char buff[16];
+
+	if (!name) {
+		snprintf(buff, sizeof(buff) - 1, "bit%u", idx);
+		name = buff;
+	}
+	printf("%-*s: %s\n", *maxlen, name, val ? "on" : "off");
+}
+
+int privflags_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_PRIVFLAGS_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	const struct stringset *flag_names = NULL;
+	struct nl_context *nlctx = data;
+	unsigned int maxlen = 0;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0 || !tb[ETHTOOL_A_PRIVFLAGS_FLAGS])
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_PRIVFLAGS_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (bitset_is_compact(tb[ETHTOOL_A_PRIVFLAGS_FLAGS])) {
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			return err_ret;
+		flag_names = perdev_stringset(nlctx->devname, ETH_SS_PRIV_FLAGS,
+					      nlctx->ethnl2_socket);
+	}
+
+	ret = walk_bitset(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], flag_names,
+			  privflags_maxlen_walk_cb, &maxlen);
+	if (ret < 0)
+		return err_ret;
+	if (silent)
+		putchar('\n');
+	printf("Private flags for %s:\n", nlctx->devname);
+	ret = walk_bitset(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], flag_names,
+			  privflags_dump_walk_cb, &maxlen);
+	return (ret < 0) ? err_ret : MNL_CB_OK;
+}
+
+int nl_gprivflags(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PRIVFLAGS_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_PRIVFLAGS_GET,
+				      ETHTOOL_A_PRIVFLAGS_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, privflags_reply_cb);
+}
+
+/* PRIVFLAGS_SET */
+
+static const struct bitset_parser_data privflags_parser_data = {
+	.force_hex	= false,
+	.no_mask	= false,
+};
+
+int nl_sprivflags(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_PRIVFLAGS_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "--set-priv-flags";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_PRIVFLAGS_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_PRIVFLAGS_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parse_bitset(nlctx, ETHTOOL_A_PRIVFLAGS_FLAGS,
+			      &privflags_parser_data, msgbuff, NULL);
+	if (ret < 0)
+		return -EINVAL;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 2;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 1;
+}
diff --git a/netlink/rings.c b/netlink/rings.c
new file mode 100644
index 0000000..6284035
--- /dev/null
+++ b/netlink/rings.c
@@ -0,0 +1,181 @@
+/*
+ * rings.c - netlink implementation of ring commands
+ *
+ * Implementation of "ethtool -g <dev>" and "ethtool -G <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+/* RINGS_GET */
+
+int rings_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_RINGS_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	unsigned char tcp_hds;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_RINGS_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		putchar('\n');
+	printf("Ring parameters for %s:\n", nlctx->devname);
+	printf("Pre-set maximums:\n");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_MAX], "RX:\t\t");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_MINI_MAX], "RX Mini:\t");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_JUMBO_MAX], "RX Jumbo:\t");
+	show_u32(tb[ETHTOOL_A_RINGS_TX_MAX], "TX:\t\t");
+	printf("Current hardware settings:\n");
+	show_u32(tb[ETHTOOL_A_RINGS_RX], "RX:\t\t");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_MINI], "RX Mini:\t");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_JUMBO], "RX Jumbo:\t");
+	show_u32(tb[ETHTOOL_A_RINGS_TX], "TX:\t\t");
+	show_u32(tb[ETHTOOL_A_RINGS_RX_BUF_LEN], "RX Buf Len:\t\t");
+	show_u32(tb[ETHTOOL_A_RINGS_CQE_SIZE], "CQE Size:\t\t");
+	show_bool("tx-push", "TX Push:\t%s\n", tb[ETHTOOL_A_RINGS_TX_PUSH]);
+
+	tcp_hds = tb[ETHTOOL_A_RINGS_TCP_DATA_SPLIT] ?
+		mnl_attr_get_u8(tb[ETHTOOL_A_RINGS_TCP_DATA_SPLIT]) : 0;
+	printf("TCP data split:\t");
+	switch (tcp_hds) {
+	case ETHTOOL_TCP_DATA_SPLIT_UNKNOWN:
+		printf("n/a\n");
+		break;
+	case ETHTOOL_TCP_DATA_SPLIT_DISABLED:
+		printf("off\n");
+		break;
+	case ETHTOOL_TCP_DATA_SPLIT_ENABLED:
+		printf("on\n");
+		break;
+	default:
+		printf("unknown(%d)\n", tcp_hds);
+		break;
+	}
+
+	return MNL_CB_OK;
+}
+
+int nl_gring(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_RINGS_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_RINGS_GET,
+				      ETHTOOL_A_RINGS_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, rings_reply_cb);
+}
+
+/* RINGS_SET */
+
+static const struct param_parser sring_params[] = {
+	{
+		.arg		= "rx",
+		.type		= ETHTOOL_A_RINGS_RX,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-mini",
+		.type		= ETHTOOL_A_RINGS_RX_MINI,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "rx-jumbo",
+		.type		= ETHTOOL_A_RINGS_RX_JUMBO,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "tx",
+		.type		= ETHTOOL_A_RINGS_TX,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg            = "rx-buf-len",
+		.type           = ETHTOOL_A_RINGS_RX_BUF_LEN,
+		.handler        = nl_parse_direct_u32,
+		.min_argc       = 1,
+	},
+	{
+		.arg            = "cqe-size",
+		.type           = ETHTOOL_A_RINGS_CQE_SIZE,
+		.handler        = nl_parse_direct_u32,
+		.min_argc       = 1,
+	},
+	{
+		.arg            = "tx-push",
+		.type           = ETHTOOL_A_RINGS_TX_PUSH,
+		.handler        = nl_parse_u8bool,
+		.min_argc       = 1,
+	},
+	{}
+};
+
+int nl_sring(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_msg_buff *msgbuff;
+	struct nl_socket *nlsk;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_RINGS_SET, false))
+		return -EOPNOTSUPP;
+
+	nlctx->cmd = "-G";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+	msgbuff = &nlsk->msgbuff;
+
+	ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_RINGS_SET,
+		       NLM_F_REQUEST | NLM_F_ACK);
+	if (ret < 0)
+		return 2;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_RINGS_HEADER,
+			       ctx->devname, 0))
+		return -EMSGSIZE;
+
+	ret = nl_parser(nlctx, sring_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return 81;
+	ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+	if (ret == 0)
+		return 0;
+	else
+		return nlctx->exit_code ?: 81;
+}
diff --git a/netlink/settings.c b/netlink/settings.c
new file mode 100644
index 0000000..ea86e36
--- /dev/null
+++ b/netlink/settings.c
@@ -0,0 +1,1277 @@
+/*
+ * settings.c - netlink implementation of settings commands
+ *
+ * Implementation of "ethtool <dev>" and "ethtool -s <dev> ...".
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "strset.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* GET_SETTINGS */
+
+struct link_mode_info {
+	enum link_mode_class	class;
+	u32			speed;
+	u8			duplex;
+};
+
+static const char *const names_duplex[] = {
+	[DUPLEX_HALF]		= "Half",
+	[DUPLEX_FULL]		= "Full",
+};
+
+static const char *const names_master_slave_state[] = {
+	[MASTER_SLAVE_STATE_UNKNOWN]	= "unknown",
+	[MASTER_SLAVE_STATE_MASTER]	= "master",
+	[MASTER_SLAVE_STATE_SLAVE]	= "slave",
+	[MASTER_SLAVE_STATE_ERR]	= "resolution error",
+};
+
+static const char *const names_master_slave_cfg[] = {
+	[MASTER_SLAVE_CFG_UNKNOWN]		= "unknown",
+	[MASTER_SLAVE_CFG_MASTER_PREFERRED]	= "preferred master",
+	[MASTER_SLAVE_CFG_SLAVE_PREFERRED]	= "preferred slave",
+	[MASTER_SLAVE_CFG_MASTER_FORCE]		= "forced master",
+	[MASTER_SLAVE_CFG_SLAVE_FORCE]		= "forced slave",
+};
+
+static const char *const names_port[] = {
+	[PORT_TP]		= "Twisted Pair",
+	[PORT_AUI]		= "AUI",
+	[PORT_BNC]		= "BNC",
+	[PORT_MII]		= "MII",
+	[PORT_FIBRE]		= "FIBRE",
+	[PORT_DA]		= "Direct Attach Copper",
+	[PORT_NONE]		= "None",
+	[PORT_OTHER]		= "Other",
+};
+
+static const char *const names_transceiver[] = {
+	[XCVR_INTERNAL]		= "internal",
+	[XCVR_EXTERNAL]		= "external",
+};
+
+/* the practice of putting completely unrelated flags into link mode bitmaps
+ * is rather unfortunate but as even ethtool_link_ksettings preserved that,
+ * there is little chance of getting them separated any time soon so let's
+ * sort them out ourselves
+ */
+#define __REAL(_speed) \
+	{ .class = LM_CLASS_REAL, .speed = _speed, .duplex = DUPLEX_FULL }
+#define __HALF_DUPLEX(_speed) \
+	{ .class = LM_CLASS_REAL, .speed = _speed, .duplex = DUPLEX_HALF }
+#define __SPECIAL(_class) \
+	{ .class = LM_CLASS_ ## _class }
+
+static const struct link_mode_info link_modes[] = {
+	[ETHTOOL_LINK_MODE_10baseT_Half_BIT]		= __HALF_DUPLEX(10),
+	[ETHTOOL_LINK_MODE_10baseT_Full_BIT]		= __REAL(10),
+	[ETHTOOL_LINK_MODE_100baseT_Half_BIT]		= __HALF_DUPLEX(100),
+	[ETHTOOL_LINK_MODE_100baseT_Full_BIT]		= __REAL(100),
+	[ETHTOOL_LINK_MODE_1000baseT_Half_BIT]		= __HALF_DUPLEX(1000),
+	[ETHTOOL_LINK_MODE_1000baseT_Full_BIT]		= __REAL(1000),
+	[ETHTOOL_LINK_MODE_Autoneg_BIT]			= __SPECIAL(AUTONEG),
+	[ETHTOOL_LINK_MODE_TP_BIT]			= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_AUI_BIT]			= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_MII_BIT]			= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_FIBRE_BIT]			= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_BNC_BIT]			= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_10000baseT_Full_BIT]		= __REAL(10000),
+	[ETHTOOL_LINK_MODE_Pause_BIT]			= __SPECIAL(PAUSE),
+	[ETHTOOL_LINK_MODE_Asym_Pause_BIT]		= __SPECIAL(PAUSE),
+	[ETHTOOL_LINK_MODE_2500baseX_Full_BIT]		= __REAL(2500),
+	[ETHTOOL_LINK_MODE_Backplane_BIT]		= __SPECIAL(PORT),
+	[ETHTOOL_LINK_MODE_1000baseKX_Full_BIT]		= __REAL(1000),
+	[ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseKR_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseR_FEC_BIT]		= __REAL(10000),
+	[ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT]	= __REAL(20000),
+	[ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT]	= __REAL(20000),
+	[ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT]	= __REAL(40000),
+	[ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT]	= __REAL(40000),
+	[ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT]	= __REAL(40000),
+	[ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT]	= __REAL(40000),
+	[ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT]	= __REAL(56000),
+	[ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT]	= __REAL(56000),
+	[ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT]	= __REAL(56000),
+	[ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT]	= __REAL(56000),
+	[ETHTOOL_LINK_MODE_25000baseCR_Full_BIT]	= __REAL(25000),
+	[ETHTOOL_LINK_MODE_25000baseKR_Full_BIT]	= __REAL(25000),
+	[ETHTOOL_LINK_MODE_25000baseSR_Full_BIT]	= __REAL(25000),
+	[ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_1000baseX_Full_BIT]		= __REAL(1000),
+	[ETHTOOL_LINK_MODE_10000baseCR_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseSR_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseLR_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_10000baseER_Full_BIT]	= __REAL(10000),
+	[ETHTOOL_LINK_MODE_2500baseT_Full_BIT]		= __REAL(2500),
+	[ETHTOOL_LINK_MODE_5000baseT_Full_BIT]		= __REAL(5000),
+	[ETHTOOL_LINK_MODE_FEC_NONE_BIT]		= __SPECIAL(FEC),
+	[ETHTOOL_LINK_MODE_FEC_RS_BIT]			= __SPECIAL(FEC),
+	[ETHTOOL_LINK_MODE_FEC_BASER_BIT]		= __SPECIAL(FEC),
+	[ETHTOOL_LINK_MODE_50000baseKR_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_50000baseSR_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_50000baseCR_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_50000baseDR_Full_BIT]	= __REAL(50000),
+	[ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT] = __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT] = __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_100baseT1_Full_BIT]		= __REAL(100),
+	[ETHTOOL_LINK_MODE_1000baseT1_Full_BIT]		= __REAL(1000),
+	[ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT] = __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_FEC_LLRS_BIT]		= __SPECIAL(FEC),
+	[ETHTOOL_LINK_MODE_100000baseKR_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseSR_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseLR_ER_FR_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseCR_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_100000baseDR_Full_BIT]	= __REAL(100000),
+	[ETHTOOL_LINK_MODE_200000baseKR2_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseSR2_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT] = __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseDR2_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_200000baseCR2_Full_BIT]	= __REAL(200000),
+	[ETHTOOL_LINK_MODE_400000baseKR4_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseSR4_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT] = __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT]	= __REAL(400000),
+	[ETHTOOL_LINK_MODE_100baseFX_Half_BIT]		= __HALF_DUPLEX(100),
+	[ETHTOOL_LINK_MODE_100baseFX_Full_BIT]		= __REAL(100),
+	[ETHTOOL_LINK_MODE_10baseT1L_Full_BIT]		= __REAL(10),
+};
+const unsigned int link_modes_count = ARRAY_SIZE(link_modes);
+
+#undef __REAL
+#undef __HALF_DUPLEX
+#undef __SPECIAL
+
+static bool lm_class_match(unsigned int mode, enum link_mode_class class)
+{
+	unsigned int mode_class = (mode < link_modes_count) ?
+				   link_modes[mode].class : LM_CLASS_UNKNOWN;
+
+	return mode_class == class ||
+	       (class == LM_CLASS_REAL && mode_class == LM_CLASS_UNKNOWN);
+}
+
+static void print_enum(const char *const *info, unsigned int n_info,
+		       unsigned int val, const char *label)
+{
+	if (val >= n_info || !info[val])
+		printf("\t%s: Unknown! (%d)\n", label, val);
+	else
+		printf("\t%s: %s\n", label, info[val]);
+}
+
+static int dump_pause(const struct nlattr *attr, bool mask, const char *label)
+{
+	bool pause, asym;
+	int ret = 0;
+
+	pause = bitset_get_bit(attr, mask, ETHTOOL_LINK_MODE_Pause_BIT, &ret);
+	if (ret < 0)
+		goto err;
+	asym = bitset_get_bit(attr, mask, ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+			      &ret);
+	if (ret < 0)
+		goto err;
+
+	printf("\t%s", label);
+	if (pause)
+		printf("%s\n", asym ?  "Symmetric Receive-only" : "Symmetric");
+	else
+		printf("%s\n", asym ? "Transmit-only" : "No");
+
+	return 0;
+err:
+	fprintf(stderr, "malformed netlink message (pause modes)\n");
+	return ret;
+}
+
+static void print_banner(struct nl_context *nlctx)
+{
+	if (nlctx->no_banner)
+		return;
+	printf("Settings for %s:\n", nlctx->devname);
+	nlctx->no_banner = true;
+}
+
+int dump_link_modes(struct nl_context *nlctx, const struct nlattr *bitset,
+		    bool mask, unsigned int class, const char *before,
+		    const char *between, const char *after, const char *if_none)
+{
+	const struct nlattr *bitset_tb[ETHTOOL_A_BITSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(bitset_tb);
+	const unsigned int before_len = strlen(before);
+	unsigned int prev = UINT_MAX - 1;
+	const struct nlattr *bits;
+	const struct nlattr *bit;
+	bool first = true;
+	bool nomask;
+	int ret;
+
+	ret = mnl_attr_parse_nested(bitset, attr_cb, &bitset_tb_info);
+	if (ret < 0)
+		goto err_nonl;
+
+	nomask = bitset_tb[ETHTOOL_A_BITSET_NOMASK];
+	/* Trying to print the mask of a "no mask" bitset doesn't make sense */
+	if (mask && nomask) {
+		ret = -EFAULT;
+		goto err_nonl;
+	}
+
+	bits = bitset_tb[ETHTOOL_A_BITSET_BITS];
+
+	if (!bits) {
+		const struct stringset *lm_strings;
+		unsigned int count;
+		unsigned int idx;
+		const char *name;
+
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			goto err_nonl;
+		lm_strings = global_stringset(ETH_SS_LINK_MODES,
+					      nlctx->ethnl2_socket);
+		bits = mask ? bitset_tb[ETHTOOL_A_BITSET_MASK] :
+			      bitset_tb[ETHTOOL_A_BITSET_VALUE];
+		ret = -EFAULT;
+		if (!bits || !bitset_tb[ETHTOOL_A_BITSET_SIZE])
+			goto err_nonl;
+		count = mnl_attr_get_u32(bitset_tb[ETHTOOL_A_BITSET_SIZE]);
+		if (mnl_attr_get_payload_len(bits) / 4 < (count + 31) / 32)
+			goto err_nonl;
+
+		printf("\t%s", before);
+		for (idx = 0; idx < count; idx++) {
+			const uint32_t *raw_data = mnl_attr_get_payload(bits);
+			char buff[14];
+
+			if (!(raw_data[idx / 32] & (1U << (idx % 32))))
+				continue;
+			if (!lm_class_match(idx, class))
+				continue;
+			name = get_string(lm_strings, idx);
+			if (!name) {
+				snprintf(buff, sizeof(buff), "BIT%u", idx);
+				name = buff;
+			}
+			if (first)
+				first = false;
+			/* ugly hack to preserve old output format */
+			if (class == LM_CLASS_REAL && (idx == prev + 1) &&
+			    prev < link_modes_count &&
+			    link_modes[prev].class == LM_CLASS_REAL &&
+			    link_modes[prev].duplex == DUPLEX_HALF)
+				putchar(' ');
+			else if (between)
+				printf("\t%s", between);
+			else
+				printf("\n\t%*s", before_len, "");
+			printf("%s", name);
+			prev = idx;
+		}
+		goto after;
+	}
+
+	printf("\t%s", before);
+	mnl_attr_for_each_nested(bit, bits) {
+		const struct nlattr *tb[ETHTOOL_A_BITSET_BIT_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+		unsigned int idx;
+		const char *name;
+
+		if (mnl_attr_get_type(bit) != ETHTOOL_A_BITSET_BITS_BIT)
+			continue;
+		ret = mnl_attr_parse_nested(bit, attr_cb, &tb_info);
+		if (ret < 0)
+			goto err;
+		ret = -EFAULT;
+		if (!tb[ETHTOOL_A_BITSET_BIT_INDEX] ||
+		    !tb[ETHTOOL_A_BITSET_BIT_NAME])
+			goto err;
+		if (!mask && !nomask && !tb[ETHTOOL_A_BITSET_BIT_VALUE])
+			continue;
+
+		idx = mnl_attr_get_u32(tb[ETHTOOL_A_BITSET_BIT_INDEX]);
+		name = mnl_attr_get_str(tb[ETHTOOL_A_BITSET_BIT_NAME]);
+		if (!lm_class_match(idx, class))
+			continue;
+		if (first) {
+			first = false;
+		} else {
+			/* ugly hack to preserve old output format */
+			if ((class == LM_CLASS_REAL) && (idx == prev + 1) &&
+			    (prev < link_modes_count) &&
+			    (link_modes[prev].class == LM_CLASS_REAL) &&
+			    (link_modes[prev].duplex == DUPLEX_HALF))
+				putchar(' ');
+			else if (between)
+				printf("\t%s", between);
+			else
+				printf("\n\t%*s", before_len, "");
+		}
+		printf("%s", name);
+		prev = idx;
+	}
+after:
+	if (first && if_none)
+		printf("%s", if_none);
+	printf("%s", after);
+
+	return 0;
+err:
+	putchar('\n');
+err_nonl:
+	fflush(stdout);
+	fprintf(stderr, "malformed netlink message (link_modes)\n");
+	return ret;
+}
+
+static int dump_our_modes(struct nl_context *nlctx, const struct nlattr *attr)
+{
+	bool autoneg;
+	int ret;
+
+	print_banner(nlctx);
+	ret = dump_link_modes(nlctx, attr, true, LM_CLASS_PORT,
+			      "Supported ports: [ ", " ", " ]\n", NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = dump_link_modes(nlctx, attr, true, LM_CLASS_REAL,
+			      "Supported link modes:   ", NULL, "\n",
+			      "Not reported");
+	if (ret < 0)
+		return ret;
+	ret = dump_pause(attr, true, "Supported pause frame use: ");
+	if (ret < 0)
+		return ret;
+
+	autoneg = bitset_get_bit(attr, true, ETHTOOL_LINK_MODE_Autoneg_BIT,
+				 &ret);
+	if (ret < 0)
+		return ret;
+	printf("\tSupports auto-negotiation: %s\n", autoneg ? "Yes" : "No");
+
+	ret = dump_link_modes(nlctx, attr, true, LM_CLASS_FEC,
+			      "Supported FEC modes: ", " ", "\n",
+			      "Not reported");
+	if (ret < 0)
+		return ret;
+
+	ret = dump_link_modes(nlctx, attr, false, LM_CLASS_REAL,
+			      "Advertised link modes:  ", NULL, "\n",
+			      "Not reported");
+	if (ret < 0)
+		return ret;
+
+	ret = dump_pause(attr, false, "Advertised pause frame use: ");
+	if (ret < 0)
+		return ret;
+	autoneg = bitset_get_bit(attr, false, ETHTOOL_LINK_MODE_Autoneg_BIT,
+				 &ret);
+	if (ret < 0)
+		return ret;
+	printf("\tAdvertised auto-negotiation: %s\n", autoneg ? "Yes" : "No");
+
+	ret = dump_link_modes(nlctx, attr, false, LM_CLASS_FEC,
+			      "Advertised FEC modes: ", " ", "\n",
+			      "Not reported");
+	return ret;
+}
+
+static int dump_peer_modes(struct nl_context *nlctx, const struct nlattr *attr)
+{
+	bool autoneg;
+	int ret;
+
+	print_banner(nlctx);
+	ret = dump_link_modes(nlctx, attr, false, LM_CLASS_REAL,
+			      "Link partner advertised link modes:  ",
+			      NULL, "\n", "Not reported");
+	if (ret < 0)
+		return ret;
+
+	ret = dump_pause(attr, false,
+			 "Link partner advertised pause frame use: ");
+	if (ret < 0)
+		return ret;
+
+	autoneg = bitset_get_bit(attr, false,
+				 ETHTOOL_LINK_MODE_Autoneg_BIT, &ret);
+	if (ret < 0)
+		return ret;
+	printf("\tLink partner advertised auto-negotiation: %s\n",
+	       autoneg ? "Yes" : "No");
+
+	ret = dump_link_modes(nlctx, attr, false, LM_CLASS_FEC,
+			      "Link partner advertised FEC modes: ",
+			      " ", "\n", "Not reported");
+	return ret;
+}
+
+int linkmodes_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	int ret;
+
+	if (nlctx->is_dump || nlctx->is_monitor)
+		nlctx->no_banner = false;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKMODES_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (tb[ETHTOOL_A_LINKMODES_OURS]) {
+		ret = dump_our_modes(nlctx, tb[ETHTOOL_A_LINKMODES_OURS]);
+		if (ret < 0)
+			goto err;
+	}
+	if (tb[ETHTOOL_A_LINKMODES_PEER]) {
+		ret = dump_peer_modes(nlctx, tb[ETHTOOL_A_LINKMODES_PEER]);
+		if (ret < 0)
+			goto err;
+	}
+	if (tb[ETHTOOL_A_LINKMODES_SPEED]) {
+		uint32_t val = mnl_attr_get_u32(tb[ETHTOOL_A_LINKMODES_SPEED]);
+
+		print_banner(nlctx);
+		if (val == 0 || val == (uint16_t)(-1) || val == (uint32_t)(-1))
+			printf("\tSpeed: Unknown!\n");
+		else
+			printf("\tSpeed: %uMb/s\n", val);
+	}
+	if (tb[ETHTOOL_A_LINKMODES_LANES]) {
+		uint32_t val = mnl_attr_get_u32(tb[ETHTOOL_A_LINKMODES_LANES]);
+
+		print_banner(nlctx);
+		printf("\tLanes: %u\n", val);
+	}
+	if (tb[ETHTOOL_A_LINKMODES_DUPLEX]) {
+		uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_DUPLEX]);
+
+		print_banner(nlctx);
+		print_enum(names_duplex, ARRAY_SIZE(names_duplex), val,
+			   "Duplex");
+	}
+	if (tb[ETHTOOL_A_LINKMODES_AUTONEG]) {
+		int autoneg = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_AUTONEG]);
+
+		print_banner(nlctx);
+		printf("\tAuto-negotiation: %s\n",
+		       (autoneg == AUTONEG_DISABLE) ? "off" : "on");
+	}
+	if (tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG]) {
+		uint8_t val;
+
+		val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG]);
+
+		print_banner(nlctx);
+		print_enum(names_master_slave_cfg,
+			   ARRAY_SIZE(names_master_slave_cfg), val,
+			   "master-slave cfg");
+	}
+	if (tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE]) {
+		uint8_t val;
+
+		val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE]);
+		print_banner(nlctx);
+		print_enum(names_master_slave_state,
+			   ARRAY_SIZE(names_master_slave_state), val,
+			   "master-slave status");
+	}
+
+	return MNL_CB_OK;
+err:
+	if (nlctx->is_monitor || nlctx->is_dump)
+		return MNL_CB_OK;
+	fputs("No data available\n", stdout);
+	nlctx->exit_code = 75;
+	return MNL_CB_ERROR;
+}
+
+int linkinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKINFO_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	int port = -1;
+	int ret;
+
+	if (nlctx->is_dump || nlctx->is_monitor)
+		nlctx->no_banner = false;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKINFO_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (tb[ETHTOOL_A_LINKINFO_PORT]) {
+		uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_PORT]);
+
+		print_banner(nlctx);
+		print_enum(names_port, ARRAY_SIZE(names_port), val, "Port");
+		port = val;
+	}
+	if (tb[ETHTOOL_A_LINKINFO_PHYADDR]) {
+		uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_PHYADDR]);
+
+		print_banner(nlctx);
+		printf("\tPHYAD: %u\n", val);
+	}
+	if (tb[ETHTOOL_A_LINKINFO_TRANSCEIVER]) {
+		uint8_t val;
+
+		val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TRANSCEIVER]);
+		print_banner(nlctx);
+		print_enum(names_transceiver, ARRAY_SIZE(names_transceiver),
+			   val, "Transceiver");
+	}
+	if (tb[ETHTOOL_A_LINKINFO_TP_MDIX] && tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] &&
+	    port == PORT_TP) {
+		uint8_t mdix = mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TP_MDIX]);
+		uint8_t mdix_ctrl =
+			mnl_attr_get_u8(tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL]);
+
+		print_banner(nlctx);
+		dump_mdix(mdix, mdix_ctrl);
+	}
+
+	return MNL_CB_OK;
+}
+
+static const char *get_enum_string(const char *const *string_table, unsigned int n_string_table,
+				   unsigned int val)
+{
+	if (val >= n_string_table || !string_table[val])
+		return NULL;
+	else
+		return string_table[val];
+}
+
+static const char *const names_link_ext_state[] = {
+	[ETHTOOL_LINK_EXT_STATE_AUTONEG]		= "Autoneg",
+	[ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE]	= "Link training failure",
+	[ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH]	= "Logical mismatch",
+	[ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY]	= "Bad signal integrity",
+	[ETHTOOL_LINK_EXT_STATE_NO_CABLE]		= "No cable",
+	[ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE]		= "Cable issue",
+	[ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE]		= "EEPROM issue",
+	[ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE]	= "Calibration failure",
+	[ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED]	= "Power budget exceeded",
+	[ETHTOOL_LINK_EXT_STATE_OVERHEAT]		= "Overheat",
+	[ETHTOOL_LINK_EXT_STATE_MODULE]			= "Module",
+};
+
+static const char *const names_autoneg_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED]		=
+		"No partner detected",
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED]			=
+		"Ack not received",
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED]	=
+		"Next page exchange failed",
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE]	=
+		"No partner detected during force mode",
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE]	=
+		"FEC mismatch during override",
+	[ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD]				=
+		"No HCD",
+};
+
+static const char *const names_link_training_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED]			=
+		"KR frame lock not acquired",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT]				=
+		"KR link inhibit timeout",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY]	=
+		"KR Link partner did not set receiver ready",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT]					=
+		"Remote side is not ready yet",
+};
+
+static const char *const names_link_logical_mismatch_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK]	=
+		"PCS did not acquire block lock",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK]	=
+		"PCS did not acquire AM lock",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS]	=
+		"PCS did not get align_status",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED]		=
+		"FC FEC is not locked",
+	[ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED]		=
+		"RS FEC is not locked",
+};
+
+static const char *const names_bad_signal_integrity_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS]	=
+		"Large number of physical errors",
+	[ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE]		=
+		"Unsupported rate",
+	[ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST]	=
+		"Serdes reference clock lost",
+	[ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS]			=
+		"Serdes ALOS",
+};
+
+static const char *const names_cable_issue_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE]	=
+		"Unsupported cable",
+	[ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE]	=
+		"Cable test failure",
+};
+
+static const char *const names_module_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY]	=
+		"CMIS module is not in ModuleReady state",
+};
+
+static const char *link_ext_substate_get(uint8_t link_ext_state_val, uint8_t link_ext_substate_val)
+{
+	switch (link_ext_state_val) {
+	case ETHTOOL_LINK_EXT_STATE_AUTONEG:
+		return get_enum_string(names_autoneg_link_ext_substate,
+				       ARRAY_SIZE(names_autoneg_link_ext_substate),
+				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE:
+		return get_enum_string(names_link_training_link_ext_substate,
+				       ARRAY_SIZE(names_link_training_link_ext_substate),
+				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH:
+		return get_enum_string(names_link_logical_mismatch_link_ext_substate,
+				       ARRAY_SIZE(names_link_logical_mismatch_link_ext_substate),
+				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY:
+		return get_enum_string(names_bad_signal_integrity_link_ext_substate,
+				       ARRAY_SIZE(names_bad_signal_integrity_link_ext_substate),
+				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE:
+		return get_enum_string(names_cable_issue_link_ext_substate,
+				       ARRAY_SIZE(names_cable_issue_link_ext_substate),
+				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_MODULE:
+		return get_enum_string(names_module_link_ext_substate,
+				       ARRAY_SIZE(names_module_link_ext_substate),
+				       link_ext_substate_val);
+	default:
+		return NULL;
+	}
+}
+
+static void linkstate_link_ext_substate_print(const struct nlattr *tb[],
+					      uint8_t link_ext_state_val)
+{
+	uint8_t link_ext_substate_val;
+	const char *link_ext_substate_str;
+
+	if (!tb[ETHTOOL_A_LINKSTATE_EXT_SUBSTATE])
+		return;
+
+	link_ext_substate_val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKSTATE_EXT_SUBSTATE]);
+
+	link_ext_substate_str = link_ext_substate_get(link_ext_state_val, link_ext_substate_val);
+	if (!link_ext_substate_str)
+		printf(", %u", link_ext_substate_val);
+	else
+		printf(", %s", link_ext_substate_str);
+}
+
+static void linkstate_link_ext_state_print(const struct nlattr *tb[])
+{
+	uint8_t link_ext_state_val;
+	const char *link_ext_state_str;
+
+	if (!tb[ETHTOOL_A_LINKSTATE_EXT_STATE])
+		return;
+
+	link_ext_state_val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKSTATE_EXT_STATE]);
+
+	link_ext_state_str = get_enum_string(names_link_ext_state,
+					     ARRAY_SIZE(names_link_ext_state),
+					     link_ext_state_val);
+	if (!link_ext_state_str)
+		printf(" (%u", link_ext_state_val);
+	else
+		printf(" (%s", link_ext_state_str);
+
+	linkstate_link_ext_substate_print(tb, link_ext_state_val);
+	printf(")");
+}
+
+int linkstate_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKSTATE_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	int ret;
+
+	if (nlctx->is_dump || nlctx->is_monitor)
+		nlctx->no_banner = false;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_LINKSTATE_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (tb[ETHTOOL_A_LINKSTATE_LINK]) {
+		uint8_t val = mnl_attr_get_u8(tb[ETHTOOL_A_LINKSTATE_LINK]);
+
+		print_banner(nlctx);
+		printf("\tLink detected: %s", val ? "yes" : "no");
+		linkstate_link_ext_state_print(tb);
+		printf("\n");
+	}
+
+	if (tb[ETHTOOL_A_LINKSTATE_SQI]) {
+		uint32_t val = mnl_attr_get_u32(tb[ETHTOOL_A_LINKSTATE_SQI]);
+
+		print_banner(nlctx);
+		printf("\tSQI: %u", val);
+
+		if (tb[ETHTOOL_A_LINKSTATE_SQI_MAX]) {
+			uint32_t max;
+
+			max = mnl_attr_get_u32(tb[ETHTOOL_A_LINKSTATE_SQI_MAX]);
+			printf("/%u\n", max);
+		} else {
+			printf("\n");
+		}
+	}
+
+	return MNL_CB_OK;
+}
+
+void wol_modes_cb(unsigned int idx, const char *name __maybe_unused, bool val,
+		  void *data)
+{
+	struct ethtool_wolinfo *wol = data;
+
+	if (idx >= 32)
+		return;
+	wol->supported |= (1U << idx);
+	if (val)
+		wol->wolopts |= (1U << idx);
+}
+
+int wol_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_WOL_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	struct ethtool_wolinfo wol = {};
+	int ret;
+
+	if (nlctx->is_dump || nlctx->is_monitor)
+		nlctx->no_banner = false;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_WOL_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (tb[ETHTOOL_A_WOL_MODES])
+		walk_bitset(tb[ETHTOOL_A_WOL_MODES], NULL, wol_modes_cb, &wol);
+	if (tb[ETHTOOL_A_WOL_SOPASS]) {
+		unsigned int len;
+
+		len = mnl_attr_get_payload_len(tb[ETHTOOL_A_WOL_SOPASS]);
+		if (len != SOPASS_MAX)
+			fprintf(stderr, "invalid SecureOn password length %u (should be %u)\n",
+				len, SOPASS_MAX);
+		else
+			memcpy(wol.sopass,
+			       mnl_attr_get_payload(tb[ETHTOOL_A_WOL_SOPASS]),
+			       SOPASS_MAX);
+	}
+	print_banner(nlctx);
+	dump_wol(&wol);
+
+	return MNL_CB_OK;
+}
+
+void msgmask_cb(unsigned int idx, const char *name __maybe_unused, bool val,
+		void *data)
+{
+	u32 *msg_mask = data;
+
+	if (idx >= 32)
+		return;
+	if (val)
+		*msg_mask |= (1U << idx);
+}
+
+void msgmask_cb2(unsigned int idx __maybe_unused, const char *name,
+		 bool val, void *data __maybe_unused)
+{
+	if (val)
+		printf(" %s", name);
+}
+
+int debug_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_DEBUG_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	const struct stringset *msgmask_strings = NULL;
+	struct nl_context *nlctx = data;
+	u32 msg_mask = 0;
+	int ret;
+
+	if (nlctx->is_dump || nlctx->is_monitor)
+		nlctx->no_banner = false;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_DEBUG_HEADER]);
+	if (!dev_ok(nlctx))
+		return MNL_CB_OK;
+
+	if (!tb[ETHTOOL_A_DEBUG_MSGMASK])
+		return MNL_CB_OK;
+	if (bitset_is_compact(tb[ETHTOOL_A_DEBUG_MSGMASK])) {
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			return MNL_CB_OK;
+		msgmask_strings = global_stringset(ETH_SS_MSG_CLASSES,
+						   nlctx->ethnl2_socket);
+	}
+
+	print_banner(nlctx);
+	walk_bitset(tb[ETHTOOL_A_DEBUG_MSGMASK], NULL, msgmask_cb, &msg_mask);
+	printf("        Current message level: 0x%08x (%u)\n"
+	       "                              ",
+	       msg_mask, msg_mask);
+	walk_bitset(tb[ETHTOOL_A_DEBUG_MSGMASK], msgmask_strings, msgmask_cb2,
+		    NULL);
+	fputc('\n', stdout);
+
+	return MNL_CB_OK;
+}
+
+static int gset_request(struct nl_socket *nlsk, uint8_t msg_type,
+			uint16_t hdr_attr, mnl_cb_t cb)
+{
+	int ret;
+
+	ret = nlsock_prep_get_request(nlsk, msg_type, hdr_attr, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, cb);
+}
+
+int nl_gset(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_LINKMODES_GET, true) ||
+	    netlink_cmd_check(ctx, ETHTOOL_MSG_LINKINFO_GET, true) ||
+	    netlink_cmd_check(ctx, ETHTOOL_MSG_WOL_GET, true) ||
+	    netlink_cmd_check(ctx, ETHTOOL_MSG_DEBUG_GET, true) ||
+	    netlink_cmd_check(ctx, ETHTOOL_MSG_LINKSTATE_GET, true))
+		return -EOPNOTSUPP;
+
+	nlctx->suppress_nlerr = 1;
+
+	ret = gset_request(nlsk, ETHTOOL_MSG_LINKMODES_GET,
+			   ETHTOOL_A_LINKMODES_HEADER, linkmodes_reply_cb);
+	if (ret == -ENODEV)
+		return ret;
+
+	ret = gset_request(nlsk, ETHTOOL_MSG_LINKINFO_GET,
+			   ETHTOOL_A_LINKINFO_HEADER, linkinfo_reply_cb);
+	if (ret == -ENODEV)
+		return ret;
+
+	ret = gset_request(nlsk, ETHTOOL_MSG_WOL_GET, ETHTOOL_A_WOL_HEADER,
+			   wol_reply_cb);
+	if (ret == -ENODEV)
+		return ret;
+
+	ret = gset_request(nlsk, ETHTOOL_MSG_DEBUG_GET, ETHTOOL_A_DEBUG_HEADER,
+			   debug_reply_cb);
+	if (ret == -ENODEV)
+		return ret;
+
+	ret = gset_request(nlsk, ETHTOOL_MSG_LINKSTATE_GET,
+			   ETHTOOL_A_LINKSTATE_HEADER, linkstate_reply_cb);
+	if (ret == -ENODEV)
+		return ret;
+
+	if (!nlctx->no_banner) {
+		printf("No data available\n");
+		return 75;
+	}
+
+
+	return 0;
+}
+
+/* SET_SETTINGS */
+
+enum {
+	WAKE_PHY_BIT		= 0,
+	WAKE_UCAST_BIT		= 1,
+	WAKE_MCAST_BIT		= 2,
+	WAKE_BCAST_BIT		= 3,
+	WAKE_ARP_BIT		= 4,
+	WAKE_MAGIC_BIT		= 5,
+	WAKE_MAGICSECURE_BIT	= 6,
+	WAKE_FILTER_BIT		= 7,
+};
+
+#define WAKE_ALL (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_ARP | \
+		  WAKE_MAGIC | WAKE_MAGICSECURE)
+
+static const struct lookup_entry_u8 port_values[] = {
+	{ .arg = "tp",		.val = PORT_TP },
+	{ .arg = "aui",		.val = PORT_AUI },
+	{ .arg = "mii",		.val = PORT_MII },
+	{ .arg = "fibre",	.val = PORT_FIBRE },
+	{ .arg = "bnc",		.val = PORT_BNC },
+	{ .arg = "da",		.val = PORT_DA },
+	{}
+};
+
+static const struct lookup_entry_u8 mdix_values[] = {
+	{ .arg = "auto",	.val = ETH_TP_MDI_AUTO },
+	{ .arg = "on",		.val = ETH_TP_MDI_X },
+	{ .arg = "off",		.val = ETH_TP_MDI },
+	{}
+};
+
+static const struct error_parser_data xcvr_parser_data = {
+	.err_msg	= "deprecated parameter '%s' not supported by kernel\n",
+	.ret_val	= -EINVAL,
+	.extra_args	= 1,
+};
+
+static const struct lookup_entry_u8 autoneg_values[] = {
+	{ .arg = "off",		.val = AUTONEG_DISABLE },
+	{ .arg = "on",		.val = AUTONEG_ENABLE },
+	{}
+};
+
+static const struct bitset_parser_data advertise_parser_data = {
+	.no_mask	= false,
+	.force_hex	= true,
+};
+
+static const struct lookup_entry_u32 duplex_values[] = {
+	{ .arg = "half",	.val = DUPLEX_HALF },
+	{ .arg = "full",	.val = DUPLEX_FULL },
+	{}
+};
+
+static const struct lookup_entry_u8 master_slave_values[] = {
+	{ .arg = "preferred-master", .val = MASTER_SLAVE_CFG_MASTER_PREFERRED },
+	{ .arg = "preferred-slave",  .val = MASTER_SLAVE_CFG_SLAVE_PREFERRED },
+	{ .arg = "forced-master",    .val = MASTER_SLAVE_CFG_MASTER_FORCE },
+	{ .arg = "forced-slave",     .val = MASTER_SLAVE_CFG_SLAVE_FORCE },
+	{}
+};
+
+char wol_bit_chars[WOL_MODE_COUNT] = {
+	[WAKE_PHY_BIT]		= 'p',
+	[WAKE_UCAST_BIT]	= 'u',
+	[WAKE_MCAST_BIT]	= 'm',
+	[WAKE_BCAST_BIT]	= 'b',
+	[WAKE_ARP_BIT]		= 'a',
+	[WAKE_MAGIC_BIT]	= 'g',
+	[WAKE_MAGICSECURE_BIT]	= 's',
+	[WAKE_FILTER_BIT]	= 'f',
+};
+
+const struct char_bitset_parser_data wol_parser_data = {
+	.bit_chars	= wol_bit_chars,
+	.nbits		= WOL_MODE_COUNT,
+	.reset_char	= 'd',
+};
+
+const struct byte_str_parser_data sopass_parser_data = {
+	.min_len	= 6,
+	.max_len	= 6,
+	.delim		= ':',
+};
+
+static const struct bitset_parser_data msglvl_parser_data = {
+	.no_mask	= false,
+	.force_hex	= false,
+};
+
+static const struct param_parser sset_params[] = {
+	{
+		.arg		= "port",
+		.group		= ETHTOOL_MSG_LINKINFO_SET,
+		.type		= ETHTOOL_A_LINKINFO_PORT,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= port_values,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "mdix",
+		.group		= ETHTOOL_MSG_LINKINFO_SET,
+		.type		= ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= mdix_values,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "phyad",
+		.group		= ETHTOOL_MSG_LINKINFO_SET,
+		.type		= ETHTOOL_A_LINKINFO_PHYADDR,
+		.handler	= nl_parse_direct_u8,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "xcvr",
+		.group		= ETHTOOL_MSG_LINKINFO_SET,
+		.handler	= nl_parse_error,
+		.handler_data	= &xcvr_parser_data,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "autoneg",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_AUTONEG,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= autoneg_values,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "advertise",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_OURS,
+		.handler	= nl_parse_bitset,
+		.handler_data	= &advertise_parser_data,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "speed",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_SPEED,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "lanes",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_LANES,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "duplex",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_DUPLEX,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= duplex_values,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "master-slave",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG,
+		.handler	= nl_parse_lookup_u8,
+		.handler_data	= master_slave_values,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "wol",
+		.group		= ETHTOOL_MSG_WOL_SET,
+		.type		= ETHTOOL_A_WOL_MODES,
+		.handler	= nl_parse_char_bitset,
+		.handler_data	= &wol_parser_data,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "sopass",
+		.group		= ETHTOOL_MSG_WOL_SET,
+		.type		= ETHTOOL_A_WOL_SOPASS,
+		.handler	= nl_parse_byte_str,
+		.handler_data	= &sopass_parser_data,
+		.min_argc	= 1,
+	},
+	{
+		.arg		= "msglvl",
+		.group		= ETHTOOL_MSG_DEBUG_SET,
+		.type		= ETHTOOL_A_DEBUG_MSGMASK,
+		.handler	= nl_parse_bitset,
+		.handler_data	= &msglvl_parser_data,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+/* Maximum number of request messages sent to kernel; must be equal to the
+ * number of different .group values in sset_params[] array.
+ */
+#define SSET_MAX_MSGS 4
+
+static int linkmodes_reply_advert_all_cb(const struct nlmsghdr *nlhdr,
+					 void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_msg_buff *req_msgbuff = data;
+	const struct nlattr *ours_attr;
+	struct nlattr *req_bitset;
+	uint32_t *supported_modes;
+	unsigned int modes_count;
+	unsigned int i;
+	int ret;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return MNL_CB_ERROR;
+	ours_attr = tb[ETHTOOL_A_LINKMODES_OURS];
+	if (!ours_attr)
+		return MNL_CB_ERROR;
+	modes_count = bitset_get_count(tb[ETHTOOL_A_LINKMODES_OURS], &ret);
+	if (ret < 0)
+		return MNL_CB_ERROR;
+	supported_modes = get_compact_bitset_mask(tb[ETHTOOL_A_LINKMODES_OURS]);
+	if (!supported_modes)
+		return MNL_CB_ERROR;
+
+	/* keep only "real" link modes */
+	for (i = 0; i < modes_count; i++)
+		if (!lm_class_match(i, LM_CLASS_REAL))
+			supported_modes[i / 32] &= ~((uint32_t)1 << (i % 32));
+
+	req_bitset = ethnla_nest_start(req_msgbuff, ETHTOOL_A_LINKMODES_OURS);
+	if (!req_bitset)
+		return MNL_CB_ERROR;
+
+	if (ethnla_put_u32(req_msgbuff, ETHTOOL_A_BITSET_SIZE, modes_count) ||
+	    ethnla_put(req_msgbuff, ETHTOOL_A_BITSET_VALUE,
+		       DIV_ROUND_UP(modes_count, 32) * sizeof(uint32_t),
+		       supported_modes) ||
+	    ethnla_put(req_msgbuff, ETHTOOL_A_BITSET_MASK,
+		       DIV_ROUND_UP(modes_count, 32) * sizeof(uint32_t),
+		       supported_modes)) {
+		ethnla_nest_cancel(req_msgbuff, req_bitset);
+		return MNL_CB_ERROR;
+	}
+
+	ethnla_nest_end(req_msgbuff, req_bitset);
+	return MNL_CB_OK;
+}
+
+/* For compatibility reasons with ioctl-based ethtool, when "autoneg on" is
+ * specified without "advertise", "speed", "duplex" and "lanes", we need to
+ * query the supported link modes from the kernel and advertise all the "real"
+ * ones.
+ */
+static int nl_sset_compat_linkmodes(struct nl_context *nlctx,
+				    struct nl_msg_buff *msgbuff)
+{
+	const struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	ret = mnl_attr_parse(msgbuff->nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	if (!tb[ETHTOOL_A_LINKMODES_AUTONEG] || tb[ETHTOOL_A_LINKMODES_OURS] ||
+	    tb[ETHTOOL_A_LINKMODES_SPEED] || tb[ETHTOOL_A_LINKMODES_DUPLEX] ||
+	    tb[ETHTOOL_A_LINKMODES_LANES])
+		return 0;
+	if (!mnl_attr_get_u8(tb[ETHTOOL_A_LINKMODES_AUTONEG]))
+		return 0;
+
+	/* all conditions satisfied, create ETHTOOL_A_LINKMODES_OURS */
+	if (netlink_cmd_check(nlctx->ctx, ETHTOOL_MSG_LINKMODES_GET, false) ||
+	    netlink_cmd_check(nlctx->ctx, ETHTOOL_MSG_LINKMODES_SET, false))
+		return -EOPNOTSUPP;
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_LINKMODES_GET,
+				      ETHTOOL_A_LINKMODES_HEADER,
+				      ETHTOOL_FLAG_COMPACT_BITSETS);
+	if (ret < 0)
+		return ret;
+	ret = nlsock_sendmsg(nlsk, NULL);
+	if (ret < 0)
+		return ret;
+	return nlsock_process_reply(nlsk, linkmodes_reply_advert_all_cb,
+				    msgbuff);
+}
+
+int nl_sset(struct cmd_context *ctx)
+{
+	struct nl_msg_buff *msgbuffs[SSET_MAX_MSGS] = {};
+	struct nl_context *nlctx = ctx->nlctx;
+	unsigned int i;
+	int ret;
+
+	nlctx->cmd = "-s";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+
+	ret = nl_parser(nlctx, sset_params, NULL, PARSER_GROUP_MSG, msgbuffs);
+	if (ret < 0) {
+		ret = 1;
+		goto out_free;
+	}
+
+	for (i = 0; i < SSET_MAX_MSGS && msgbuffs[i]; i++) {
+		struct nl_socket *nlsk = nlctx->ethnl_socket;
+
+		if (msgbuffs[i]->genlhdr->cmd == ETHTOOL_MSG_LINKMODES_SET) {
+			ret = nl_sset_compat_linkmodes(nlctx, msgbuffs[i]);
+			if (ret < 0)
+				goto out_free;
+		}
+		ret = nlsock_sendmsg(nlsk, msgbuffs[i]);
+		if (ret < 0)
+			goto out_free;
+		ret = nlsock_process_reply(nlsk, nomsg_reply_cb, NULL);
+		if (ret < 0)
+			goto out_free;
+	}
+
+out_free:
+	for (i = 0; i < SSET_MAX_MSGS && msgbuffs[i]; i++) {
+		msgbuff_done(msgbuffs[i]);
+		free(msgbuffs[i]);
+	}
+	if (ret >= 0)
+		return ret;
+	return nlctx->exit_code ?: 75;
+}
diff --git a/netlink/stats.c b/netlink/stats.c
new file mode 100644
index 0000000..9f609a4
--- /dev/null
+++ b/netlink/stats.c
@@ -0,0 +1,319 @@
+/*
+ * stats.c - netlink implementation of stats
+ *
+ * Implementation of "ethtool -S <dev> [--groups <types>] etc."
+ */
+
+#include <errno.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+#include "strset.h"
+
+static int parse_rmon_hist_one(const char *grp_name, const struct nlattr *hist,
+			       const char *dir)
+{
+	const struct nlattr *tb[ETHTOOL_A_STATS_GRP_HIST_VAL + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	unsigned long long val;
+	unsigned int low, hi;
+	int ret;
+
+	ret = mnl_attr_parse_nested(hist, attr_cb, &tb_info);
+	if (ret < 0) {
+		fprintf(stderr, "invalid kernel response - malformed histogram entry\n");
+		return 1;
+	}
+
+	if (!tb[ETHTOOL_A_STATS_GRP_HIST_BKT_LOW] ||
+	    !tb[ETHTOOL_A_STATS_GRP_HIST_BKT_HI] ||
+	    !tb[ETHTOOL_A_STATS_GRP_HIST_VAL]) {
+		fprintf(stderr, "invalid kernel response - histogram entry missing attributes\n");
+		return 1;
+	}
+
+	low = mnl_attr_get_u32(tb[ETHTOOL_A_STATS_GRP_HIST_BKT_LOW]);
+	hi = mnl_attr_get_u32(tb[ETHTOOL_A_STATS_GRP_HIST_BKT_HI]);
+	val = mnl_attr_get_u64(tb[ETHTOOL_A_STATS_GRP_HIST_VAL]);
+
+	if (!is_json_context()) {
+		fprintf(stdout, "%s-%s-etherStatsPkts", dir, grp_name);
+
+		if (low && hi) {
+			fprintf(stdout, "%uto%uOctets: %llu\n", low, hi, val);
+		} else if (hi) {
+			fprintf(stdout, "%uOctets: %llu\n", hi, val);
+		} else if (low) {
+			fprintf(stdout, "%utoMaxOctets: %llu\n", low, val);
+		} else {
+			fprintf(stderr, "invalid kernel response - bad histogram entry bounds\n");
+			return 1;
+		}
+	} else {
+		open_json_object(NULL);
+		print_uint(PRINT_JSON, "low", NULL, low);
+		print_uint(PRINT_JSON, "high", NULL, hi);
+		print_u64(PRINT_JSON, "val", NULL, val);
+		close_json_object();
+	}
+
+	return 0;
+}
+
+static int parse_rmon_hist(const struct nlattr *grp, const char *grp_name,
+			   const char *name, const char *dir, unsigned int type)
+{
+	const struct nlattr *attr;
+
+	open_json_array(name, "");
+
+	mnl_attr_for_each_nested(attr, grp) {
+		if (mnl_attr_get_type(attr) == type &&
+		    parse_rmon_hist_one(grp_name, attr, dir))
+			goto err_close_rmon;
+	}
+	close_json_array("");
+
+	return 0;
+
+err_close_rmon:
+	close_json_array("");
+	return 1;
+}
+
+static int parse_grp(struct nl_context *nlctx, const struct nlattr *grp,
+		     const struct stringset *std_str)
+{
+	const struct nlattr *tb[ETHTOOL_A_STATS_GRP_SS_ID + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	bool hist_rx = false, hist_tx = false;
+	const struct stringset *stat_str;
+	const struct nlattr *attr, *stat;
+	const char *std_name, *name;
+	unsigned int ss_id, id, s;
+	unsigned long long val;
+	int ret;
+
+	ret = mnl_attr_parse_nested(grp, attr_cb, &tb_info);
+	if (ret < 0)
+		return 1;
+
+	if (!tb[ETHTOOL_A_STATS_GRP_ID])
+		return 1;
+	if (!tb[ETHTOOL_A_STATS_GRP_SS_ID])
+		return 0;
+
+	id = mnl_attr_get_u32(tb[ETHTOOL_A_STATS_GRP_ID]);
+	ss_id = mnl_attr_get_u32(tb[ETHTOOL_A_STATS_GRP_SS_ID]);
+
+	stat_str = global_stringset(ss_id, nlctx->ethnl2_socket);
+
+	std_name = get_string(std_str, id);
+	open_json_object(std_name);
+
+	mnl_attr_for_each_nested(attr, grp) {
+		switch (mnl_attr_get_type(attr)) {
+		case ETHTOOL_A_STATS_GRP_STAT:
+			break;
+		case ETHTOOL_A_STATS_GRP_HIST_RX:
+			hist_rx = true;
+			continue;
+		case ETHTOOL_A_STATS_GRP_HIST_TX:
+			hist_tx = true;
+			continue;
+		default:
+			continue;
+		}
+
+		stat = mnl_attr_get_payload(attr);
+		ret = mnl_attr_validate(stat, MNL_TYPE_U64);
+		if (ret) {
+			fprintf(stderr, "invalid kernel response - bad statistic entry\n");
+			goto err_close_grp;
+		}
+		s = mnl_attr_get_type(stat);
+		name = get_string(stat_str, s);
+		if (!name || !name[0])
+			continue;
+
+		if (!is_json_context())
+			fprintf(stdout, "%s-%s: ", std_name, name);
+
+		val = mnl_attr_get_u64(stat);
+		print_u64(PRINT_ANY, name, "%llu\n", val);
+	}
+
+	if (hist_rx)
+		parse_rmon_hist(grp, std_name, "rx-pktsNtoM", "rx",
+				ETHTOOL_A_STATS_GRP_HIST_RX);
+	if (hist_tx)
+		parse_rmon_hist(grp, std_name, "tx-pktsNtoM", "tx",
+				ETHTOOL_A_STATS_GRP_HIST_TX);
+
+	close_json_object();
+
+	return 0;
+
+err_close_grp:
+	close_json_object();
+	return 1;
+}
+
+static int stats_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_STATS_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	const struct stringset *std_str;
+	const struct nlattr *attr;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump || nlctx->is_monitor;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_STATS_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	ret = netlink_init_ethnl2_socket(nlctx);
+	if (ret < 0)
+		return err_ret;
+	std_str = global_stringset(ETH_SS_STATS_STD, nlctx->ethnl2_socket);
+
+	if (silent)
+		print_nl();
+
+	open_json_object(NULL);
+
+	print_string(PRINT_ANY, "ifname", "Standard stats for %s:\n",
+		     nlctx->devname);
+
+	mnl_attr_for_each(attr, nlhdr, GENL_HDRLEN) {
+		if (mnl_attr_get_type(attr) == ETHTOOL_A_STATS_GRP) {
+			ret = parse_grp(nlctx, attr, std_str);
+			if (ret)
+				goto err_close_dev;
+		}
+	}
+
+	close_json_object();
+
+	return MNL_CB_OK;
+
+err_close_dev:
+	close_json_object();
+	return err_ret;
+}
+
+static const struct bitset_parser_data stats_parser_data = {
+	.no_mask	= true,
+	.force_hex	= false,
+};
+
+static int stats_parse_all_groups(struct nl_context *nlctx, uint16_t type,
+				  const void *data, struct nl_msg_buff *msgbuff,
+				  void *dest)
+{
+	const struct stringset *std_str;
+	struct nlattr *nest;
+	int i, ret, nbits;
+	uint32_t *bits;
+
+	if (data || dest)
+		return -EFAULT;
+
+	/* ethnl2 and strset code already does caching */
+	ret = netlink_init_ethnl2_socket(nlctx);
+	if (ret < 0)
+		return ret;
+	std_str = global_stringset(ETH_SS_STATS_STD, nlctx->ethnl2_socket);
+
+	nbits = get_count(std_str);
+	bits = calloc(DIV_ROUND_UP(nbits, 32), sizeof(uint32_t));
+	if (!bits)
+		return -ENOMEM;
+
+	for (i = 0; i < nbits; i++)
+		bits[i / 32] |= 1U << (i % 32);
+
+	ret = -EMSGSIZE;
+	nest = ethnla_nest_start(msgbuff, type);
+	if (!nest)
+		goto err_free;
+
+	if (ethnla_put_flag(msgbuff, ETHTOOL_A_BITSET_NOMASK, true) ||
+	    ethnla_put_u32(msgbuff, ETHTOOL_A_BITSET_SIZE, nbits) ||
+	    ethnla_put(msgbuff, ETHTOOL_A_BITSET_VALUE,
+		       DIV_ROUND_UP(nbits, 32) * sizeof(uint32_t), bits))
+		goto err_cancel;
+
+	ethnla_nest_end(msgbuff, nest);
+	free(bits);
+	return 0;
+
+err_cancel:
+	ethnla_nest_cancel(msgbuff, nest);
+err_free:
+	free(bits);
+	return ret;
+}
+
+static const struct param_parser stats_params[] = {
+	{
+		.arg		= "--groups",
+		.type		= ETHTOOL_A_STATS_GROUPS,
+		.handler	= nl_parse_bitset,
+		.handler_data	= &stats_parser_data,
+		.min_argc	= 1,
+		.alt_group	= 1,
+	},
+	{
+		.arg		= "--all-groups",
+		.type		= ETHTOOL_A_STATS_GROUPS,
+		.handler	= stats_parse_all_groups,
+		.alt_group	= 1,
+	},
+	{}
+};
+
+int nl_gstats(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_STATS_GET,
+				      ETHTOOL_A_STATS_HEADER, 0);
+	if (ret < 0)
+		return ret;
+
+	nlctx->cmd = "-S";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+
+	ret = nl_parser(nlctx, stats_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	new_json_obj(ctx->json);
+	ret = nlsock_send_get_request(nlsk, stats_reply_cb);
+	delete_json_obj();
+	return ret;
+}
+
+bool nl_gstats_chk(struct cmd_context *ctx)
+{
+	return ctx->argc;
+}
diff --git a/netlink/strset.c b/netlink/strset.c
new file mode 100644
index 0000000..fbc9c17
--- /dev/null
+++ b/netlink/strset.c
@@ -0,0 +1,297 @@
+/*
+ * strset.c - string set handling
+ *
+ * Implementation of local cache of ethtool string sets.
+ */
+
+#include <errno.h>
+#include <string.h>
+
+#include "../internal.h"
+#include "netlink.h"
+#include "nlsock.h"
+#include "msgbuff.h"
+
+struct stringset {
+	const char		**strings;
+	void			*raw_data;
+	unsigned int		count;
+	bool			loaded;
+};
+
+struct perdev_strings {
+	int			ifindex;
+	char			devname[ALTIFNAMSIZ];
+	struct stringset	strings[ETH_SS_COUNT];
+	struct perdev_strings	*next;
+};
+
+/* universal string sets */
+static struct stringset global_strings[ETH_SS_COUNT];
+/* linked list of string sets related to network devices */
+static struct perdev_strings *device_strings;
+
+static void drop_stringset(struct stringset *set)
+{
+	if (!set)
+		return;
+
+	free(set->strings);
+	free(set->raw_data);
+	memset(set, 0, sizeof(*set));
+}
+
+static int import_stringset(struct stringset *dest, const struct nlattr *nest)
+{
+	const struct nlattr *tb_stringset[ETHTOOL_A_STRINGSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb_stringset);
+	const struct nlattr *string;
+	unsigned int size;
+	unsigned int count;
+	unsigned int idx;
+	int ret;
+
+	ret = mnl_attr_parse_nested(nest, attr_cb, &tb_stringset_info);
+	if (ret < 0)
+		return ret;
+	if (!tb_stringset[ETHTOOL_A_STRINGSET_ID] ||
+	    !tb_stringset[ETHTOOL_A_STRINGSET_COUNT] ||
+	    !tb_stringset[ETHTOOL_A_STRINGSET_STRINGS])
+		return -EFAULT;
+	idx = mnl_attr_get_u32(tb_stringset[ETHTOOL_A_STRINGSET_ID]);
+	if (idx >= ETH_SS_COUNT)
+		return 0;
+	if (dest[idx].loaded)
+		drop_stringset(&dest[idx]);
+	dest[idx].loaded = true;
+	count = mnl_attr_get_u32(tb_stringset[ETHTOOL_A_STRINGSET_COUNT]);
+	if (count == 0)
+		return 0;
+
+	size = mnl_attr_get_len(tb_stringset[ETHTOOL_A_STRINGSET_STRINGS]);
+	ret = -ENOMEM;
+	dest[idx].raw_data = malloc(size);
+	if (!dest[idx].raw_data)
+		goto err;
+	memcpy(dest[idx].raw_data, tb_stringset[ETHTOOL_A_STRINGSET_STRINGS],
+	       size);
+	dest[idx].strings = calloc(count, sizeof(dest[idx].strings[0]));
+	if (!dest[idx].strings)
+		goto err;
+	dest[idx].count = count;
+
+	nest = dest[idx].raw_data;
+	mnl_attr_for_each_nested(string, nest) {
+		const struct nlattr *tb[ETHTOOL_A_STRING_MAX + 1] = {};
+		DECLARE_ATTR_TB_INFO(tb);
+		unsigned int i;
+
+		if (mnl_attr_get_type(string) != ETHTOOL_A_STRINGS_STRING)
+			continue;
+		ret = mnl_attr_parse_nested(string, attr_cb, &tb_info);
+		if (ret < 0)
+			goto err;
+		ret = -EFAULT;
+		if (!tb[ETHTOOL_A_STRING_INDEX] || !tb[ETHTOOL_A_STRING_VALUE])
+			goto err;
+
+		i = mnl_attr_get_u32(tb[ETHTOOL_A_STRING_INDEX]);
+		if (i >= count)
+			goto err;
+		dest[idx].strings[i] =
+			mnl_attr_get_payload(tb[ETHTOOL_A_STRING_VALUE]);
+	}
+
+	return 0;
+err:
+	drop_stringset(&dest[idx]);
+	return ret;
+}
+
+static struct perdev_strings *get_perdev_by_ifindex(int ifindex)
+{
+	struct perdev_strings *perdev = device_strings;
+
+	while (perdev && perdev->ifindex != ifindex)
+		perdev = perdev->next;
+	if (perdev)
+		return perdev;
+
+	/* not found, allocate and insert into list */
+	perdev = calloc(sizeof(*perdev), 1);
+	if (!perdev)
+		return NULL;
+	perdev->ifindex = ifindex;
+	perdev->next = device_strings;
+	device_strings = perdev;
+
+	return perdev;
+}
+
+static int strset_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_STRSET_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	char devname[ALTIFNAMSIZ] = "";
+	struct stringset *dest;
+	struct nlattr *attr;
+	int ifindex = 0;
+	int ret;
+
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return ret;
+	if (tb[ETHTOOL_A_STRSET_HEADER]) {
+		ret = get_dev_info(tb[ETHTOOL_A_STRSET_HEADER], &ifindex,
+				   devname);
+		if (ret < 0)
+			return MNL_CB_OK;
+		if (ifindex && nlctx->filter_devname &&
+		    strncmp(devname, nlctx->filter_devname, ALTIFNAMSIZ))
+			return MNL_CB_OK;
+	}
+
+	if (ifindex) {
+		struct perdev_strings *perdev;
+
+		perdev = get_perdev_by_ifindex(ifindex);
+		if (!perdev)
+			return MNL_CB_OK;
+		copy_devname(perdev->devname, devname);
+		dest = perdev->strings;
+	} else {
+		dest = global_strings;
+	}
+
+	if (!tb[ETHTOOL_A_STRSET_STRINGSETS])
+		return MNL_CB_OK;
+	mnl_attr_for_each_nested(attr, tb[ETHTOOL_A_STRSET_STRINGSETS]) {
+		if (mnl_attr_get_type(attr) ==
+		    ETHTOOL_A_STRINGSETS_STRINGSET)
+			import_stringset(dest, attr);
+	}
+
+	return MNL_CB_OK;
+}
+
+static int fill_stringset_id(struct nl_msg_buff *msgbuff, unsigned int type)
+{
+	struct nlattr *nest_sets;
+	struct nlattr *nest_set;
+
+	nest_sets = ethnla_nest_start(msgbuff, ETHTOOL_A_STRSET_STRINGSETS);
+	if (!nest_sets)
+		return -EMSGSIZE;
+	nest_set = ethnla_nest_start(msgbuff, ETHTOOL_A_STRINGSETS_STRINGSET);
+	if (!nest_set)
+		goto err;
+	if (ethnla_put_u32(msgbuff, ETHTOOL_A_STRINGSET_ID, type))
+		goto err;
+	ethnla_nest_end(msgbuff, nest_set);
+	ethnla_nest_end(msgbuff, nest_sets);
+	return 0;
+
+err:
+	ethnla_nest_cancel(msgbuff, nest_sets);
+	return -EMSGSIZE;
+}
+
+static int stringset_load_request(struct nl_socket *nlsk, const char *devname,
+				  int type, bool is_dump)
+{
+	struct nl_msg_buff *msgbuff = &nlsk->msgbuff;
+	int ret;
+
+	ret = msg_init(nlsk->nlctx, msgbuff, ETHTOOL_MSG_STRSET_GET,
+		       NLM_F_REQUEST | NLM_F_ACK | (is_dump ? NLM_F_DUMP : 0));
+	if (ret < 0)
+		return ret;
+	if (ethnla_fill_header(msgbuff, ETHTOOL_A_STRSET_HEADER, devname, 0))
+		return -EMSGSIZE;
+	if (type >= 0) {
+		ret = fill_stringset_id(msgbuff, type);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = nlsock_send_get_request(nlsk, strset_reply_cb);
+	return ret;
+}
+
+/* interface */
+
+const struct stringset *global_stringset(unsigned int type,
+					 struct nl_socket *nlsk)
+{
+	int ret;
+
+	if (type >= ETH_SS_COUNT)
+		return NULL;
+	if (global_strings[type].loaded)
+		return &global_strings[type];
+	ret = stringset_load_request(nlsk, NULL, type, false);
+	return ret < 0 ? NULL : &global_strings[type];
+}
+
+const struct stringset *perdev_stringset(const char *devname, unsigned int type,
+					 struct nl_socket *nlsk)
+{
+	const struct perdev_strings *p;
+	int ret;
+
+	if (type >= ETH_SS_COUNT)
+		return NULL;
+	for (p = device_strings; p; p = p->next)
+		if (!strcmp(p->devname, devname))
+			return &p->strings[type];
+
+	ret = stringset_load_request(nlsk, devname, type, false);
+	if (ret < 0)
+		return NULL;
+	for (p = device_strings; p; p = p->next)
+		if (!strcmp(p->devname, devname))
+			return &p->strings[type];
+
+	return NULL;
+}
+
+unsigned int get_count(const struct stringset *set)
+{
+	return set->count;
+}
+
+const char *get_string(const struct stringset *set, unsigned int idx)
+{
+	if (!set || idx >= set->count)
+		return NULL;
+	return set->strings[idx];
+}
+
+int preload_global_strings(struct nl_socket *nlsk)
+{
+	return stringset_load_request(nlsk, NULL, -1, false);
+}
+
+int preload_perdev_strings(struct nl_socket *nlsk, const char *dev)
+{
+	return stringset_load_request(nlsk, dev, -1, !dev);
+}
+
+void cleanup_all_strings(void)
+{
+	struct perdev_strings *perdev;
+	unsigned int i;
+
+	for (i = 0; i < ETH_SS_COUNT; i++)
+		drop_stringset(&global_strings[i]);
+
+	perdev = device_strings;
+	while (perdev) {
+		device_strings = perdev->next;
+		for (i = 0; i < ETH_SS_COUNT; i++)
+			drop_stringset(&perdev->strings[i]);
+		free(perdev);
+		perdev = device_strings;
+	}
+}
diff --git a/netlink/strset.h b/netlink/strset.h
new file mode 100644
index 0000000..72a4a39
--- /dev/null
+++ b/netlink/strset.h
@@ -0,0 +1,25 @@
+/*
+ * strset.h - string set handling
+ *
+ * Interface for local cache of ethtool string sets.
+ */
+
+#ifndef ETHTOOL_NETLINK_STRSET_H__
+#define ETHTOOL_NETLINK_STRSET_H__
+
+struct nl_socket;
+struct stringset;
+
+const struct stringset *global_stringset(unsigned int type,
+					 struct nl_socket *nlsk);
+const struct stringset *perdev_stringset(const char *dev, unsigned int type,
+					 struct nl_socket *nlsk);
+
+unsigned int get_count(const struct stringset *set);
+const char *get_string(const struct stringset *set, unsigned int idx);
+
+int preload_global_strings(struct nl_socket *nlsk);
+int preload_perdev_strings(struct nl_socket *nlsk, const char *dev);
+void cleanup_all_strings(void);
+
+#endif /* ETHTOOL_NETLINK_STRSET_H__ */
diff --git a/netlink/tsinfo.c b/netlink/tsinfo.c
new file mode 100644
index 0000000..c6571ff
--- /dev/null
+++ b/netlink/tsinfo.c
@@ -0,0 +1,124 @@
+/*
+ * tsinfo.c - netlink implementation of timestamping commands
+ *
+ * Implementation of "ethtool -T <dev>"
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+
+/* TSINFO_GET */
+
+static void tsinfo_dump_cb(unsigned int idx, const char *name, bool val,
+			   void *data __maybe_unused)
+{
+	if (!val)
+		return;
+
+	if (name)
+		printf("\t%s\n", name);
+	else
+		printf("\tbit%u\n", idx);
+}
+
+static int tsinfo_dump_list(struct nl_context *nlctx, const struct nlattr *attr,
+			    const char *label, const char *if_empty,
+			    unsigned int stringset_id)
+{
+	const struct stringset *strings = NULL;
+	int ret;
+
+	printf("%s:", label);
+	ret = 0;
+	if (!attr || bitset_is_empty(attr, false, &ret)) {
+		printf("%s\n", if_empty);
+		return ret;
+	}
+	putchar('\n');
+	if (ret < 0)
+		return ret;
+
+	if (bitset_is_compact(attr)) {
+		ret = netlink_init_ethnl2_socket(nlctx);
+		if (ret < 0)
+			return ret;
+		strings = global_stringset(stringset_id, nlctx->ethnl2_socket);
+	}
+	return walk_bitset(attr, strings, tsinfo_dump_cb, NULL);
+}
+
+int tsinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_TSINFO_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_TSINFO_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	if (silent)
+		putchar('\n');
+	printf("Time stamping parameters for %s:\n", nlctx->devname);
+
+	ret = tsinfo_dump_list(nlctx, tb[ETHTOOL_A_TSINFO_TIMESTAMPING],
+			       "Capabilities", "", ETH_SS_SOF_TIMESTAMPING);
+	if (ret < 0)
+		return err_ret;
+
+	printf("PTP Hardware Clock: ");
+	if (tb[ETHTOOL_A_TSINFO_PHC_INDEX])
+		printf("%d\n",
+		       mnl_attr_get_u32(tb[ETHTOOL_A_TSINFO_PHC_INDEX]));
+	else
+		printf("none\n");
+
+	ret = tsinfo_dump_list(nlctx, tb[ETHTOOL_A_TSINFO_TX_TYPES],
+			       "Hardware Transmit Timestamp Modes", " none",
+			       ETH_SS_TS_TX_TYPES);
+	if (ret < 0)
+		return err_ret;
+
+	ret = tsinfo_dump_list(nlctx, tb[ETHTOOL_A_TSINFO_RX_FILTERS],
+			       "Hardware Receive Filter Modes", " none",
+			       ETH_SS_TS_RX_FILTERS);
+	if (ret < 0)
+		return err_ret;
+
+	return MNL_CB_OK;
+}
+
+int nl_tsinfo(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_TSINFO_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_TSINFO_GET,
+				      ETHTOOL_A_TSINFO_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, tsinfo_reply_cb);
+}
diff --git a/netlink/tunnels.c b/netlink/tunnels.c
new file mode 100644
index 0000000..b464046
--- /dev/null
+++ b/netlink/tunnels.c
@@ -0,0 +1,236 @@
+/*
+ * tunnel.c - device tunnel information
+ *
+ * Implementation of "ethtool --show-tunnels <dev>"
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <arpa/inet.h>
+
+#include "../common.h"
+#include "../internal.h"
+
+#include "bitset.h"
+#include "netlink.h"
+#include "strset.h"
+
+/* TUNNEL_INFO_GET */
+
+static int
+tunnel_info_strings_load(struct nl_context *nlctx,
+			 const struct stringset **strings)
+{
+	int ret;
+
+	if (*strings)
+		return 0;
+	ret = netlink_init_ethnl2_socket(nlctx);
+	if (ret < 0)
+		return ret;
+	*strings = global_stringset(ETH_SS_UDP_TUNNEL_TYPES,
+				    nlctx->ethnl2_socket);
+	return 0;
+}
+
+static int
+tunnel_info_dump_udp_entry(struct nl_context *nlctx, const struct nlattr *entry,
+			   const struct stringset **strings)
+{
+	const struct nlattr *entry_tb[ETHTOOL_A_TUNNEL_UDP_ENTRY_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(entry_tb);
+	const struct nlattr *attr;
+	unsigned int port, type;
+	int ret;
+
+	if (tunnel_info_strings_load(nlctx, strings))
+		return 1;
+
+	ret = mnl_attr_parse_nested(entry, attr_cb, &entry_tb_info);
+	if (ret < 0) {
+		fprintf(stderr, "malformed netlink message (udp entry)\n");
+		return 1;
+	}
+
+	attr = entry_tb[ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT];
+	if (!attr || mnl_attr_validate(attr, MNL_TYPE_U16) < 0) {
+		fprintf(stderr, "malformed netlink message (port)\n");
+		return 1;
+	}
+	port = ntohs(mnl_attr_get_u16(attr));
+
+	attr = entry_tb[ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE];
+	if (!attr || mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+		fprintf(stderr, "malformed netlink message (tunnel type)\n");
+		return 1;
+	}
+	type = mnl_attr_get_u32(attr);
+
+	printf("        port %d, %s\n", port, get_string(*strings, type));
+
+	return 0;
+}
+
+static void tunnel_info_dump_cb(unsigned int idx, const char *name, bool val,
+				void *data)
+{
+	bool *first = data;
+
+	if (!val)
+		return;
+
+	if (!*first)
+		putchar(',');
+	*first = false;
+
+	if (name)
+		printf(" %s", name);
+	else
+		printf(" bit%u", idx);
+}
+
+static int
+tunnel_info_dump_list(struct nl_context *nlctx, const struct nlattr *attr,
+		      const struct stringset **strings)
+{
+	bool first = true;
+	int ret;
+
+	if (bitset_is_empty(attr, false, &ret) || ret) {
+		if (ret)
+			return 1;
+
+		printf("    Types: none (static entries)\n");
+		return 0;
+	}
+
+	if (bitset_is_compact(attr) &&
+	    tunnel_info_strings_load(nlctx, strings))
+		return 1;
+
+	printf("    Types:");
+	ret = walk_bitset(attr, *strings, tunnel_info_dump_cb, &first);
+	putchar('\n');
+	return ret;
+}
+
+static int
+tunnel_info_dump_udp_table(const struct nlattr *table, struct nl_context *nlctx,
+			   const struct stringset **strings)
+{
+	const struct nlattr *table_tb[ETHTOOL_A_TUNNEL_UDP_TABLE_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(table_tb);
+	const struct nlattr *attr;
+	int i, ret;
+
+	ret = mnl_attr_parse_nested(table, attr_cb, &table_tb_info);
+	if (ret < 0) {
+		fprintf(stderr, "malformed netlink message (udp table)\n");
+		return 1;
+	}
+
+	attr = table_tb[ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE];
+	if (!attr || mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+		fprintf(stderr, "malformed netlink message (table size)\n");
+		return 1;
+	}
+	printf("    Size: %d\n", mnl_attr_get_u32(attr));
+
+	attr = table_tb[ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES];
+	if (!attr || tunnel_info_dump_list(nlctx, attr, strings)) {
+		fprintf(stderr, "malformed netlink message (types)\n");
+		return 1;
+	}
+
+	if (!table_tb[ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY]) {
+		printf("    No entries\n");
+		return 0;
+	}
+
+	i = 0;
+	mnl_attr_for_each_nested(attr, table) {
+		if (mnl_attr_get_type(attr) == ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY)
+			i++;
+	}
+
+	printf("    Entries (%d):\n", i++);
+	mnl_attr_for_each_nested(attr, table) {
+		if (mnl_attr_get_type(attr) == ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY)
+			if (tunnel_info_dump_udp_entry(nlctx, attr, strings))
+				return 1;
+	}
+
+	return 0;
+}
+
+static int
+tunnel_info_dump_udp(const struct nlattr *udp_ports, struct nl_context *nlctx)
+{
+	const struct stringset *strings = NULL;
+	const struct nlattr *table;
+	int i, err;
+
+	i = 0;
+	mnl_attr_for_each_nested(table, udp_ports) {
+		if (mnl_attr_get_type(table) != ETHTOOL_A_TUNNEL_UDP_TABLE)
+			continue;
+
+		printf("  UDP port table %d: \n", i++);
+		err = tunnel_info_dump_udp_table(table, nlctx, &strings);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int tunnel_info_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+	const struct nlattr *tb[ETHTOOL_A_TUNNEL_INFO_MAX + 1] = {};
+	DECLARE_ATTR_TB_INFO(tb);
+	const struct nlattr *udp_ports;
+	struct nl_context *nlctx = data;
+	bool silent;
+	int err_ret;
+	int ret;
+
+	silent = nlctx->is_dump;
+	err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+	ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+	if (ret < 0)
+		return err_ret;
+	nlctx->devname = get_dev_name(tb[ETHTOOL_A_TUNNEL_INFO_HEADER]);
+	if (!dev_ok(nlctx))
+		return err_ret;
+
+	printf("Tunnel information for %s:\n", nlctx->devname);
+
+	udp_ports = tb[ETHTOOL_A_TUNNEL_INFO_UDP_PORTS];
+	if (udp_ports)
+		if (tunnel_info_dump_udp(udp_ports, nlctx))
+			return err_ret;
+
+	return MNL_CB_OK;
+}
+
+int nl_gtunnels(struct cmd_context *ctx)
+{
+	struct nl_context *nlctx = ctx->nlctx;
+	struct nl_socket *nlsk = nlctx->ethnl_socket;
+	int ret;
+
+	if (netlink_cmd_check(ctx, ETHTOOL_MSG_TUNNEL_INFO_GET, true))
+		return -EOPNOTSUPP;
+	if (ctx->argc > 0) {
+		fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+			*ctx->argp);
+		return 1;
+	}
+
+	ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_TUNNEL_INFO_GET,
+				      ETHTOOL_A_TUNNEL_INFO_HEADER, 0);
+	if (ret < 0)
+		return ret;
+	return nlsock_send_get_request(nlsk, tunnel_info_reply_cb);
+}