Adding upstream version 1:6.7.upstream/1%6.7

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

1 files changed, 331 insertions, 0 deletions

diff --git a/netlink/pause.c b/netlink/pause.c
new file mode 100644
index 0000000..da444bd
--- /dev/null
+++ b/netlink/pause.c
@@ -0,0 +1,331 @@
+/*
+ * 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;
+}
+
+static const struct lookup_entry_u32 stats_src_values[] = {
+	{ .arg = "aggregate",	.val = ETHTOOL_MAC_STATS_SRC_AGGREGATE },
+	{ .arg = "emac",	.val = ETHTOOL_MAC_STATS_SRC_EMAC },
+	{ .arg = "pmac",	.val = ETHTOOL_MAC_STATS_SRC_PMAC },
+	{}
+};
+
+static const struct param_parser gpause_params[] = {
+	{
+		.arg		= "--src",
+		.type		= ETHTOOL_A_PAUSE_STATS_SRC,
+		.handler	= nl_parse_lookup_u32,
+		.handler_data	= stats_src_values,
+		.min_argc	= 1,
+	},
+	{}
+};
+
+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;
+
+	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;
+
+	nlctx->cmd = "-a";
+	nlctx->argp = ctx->argp;
+	nlctx->argc = ctx->argc;
+	nlctx->devname = ctx->devname;
+	nlsk = nlctx->ethnl_socket;
+
+	ret = nl_parser(nlctx, gpause_params, NULL, PARSER_GROUP_NONE, NULL);
+	if (ret < 0)
+		return 1;
+
+	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;
+}