Adding upstream version 6.1.0.upstream/6.1.0upstream

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

1 files changed, 1545 insertions, 0 deletions

diff --git a/ip/ipmacsec.c b/ip/ipmacsec.c
new file mode 100644
index 0000000..6dd7382
--- /dev/null
+++ b/ip/ipmacsec.c
@@ -0,0 +1,1545 @@
+/*
+ * ipmacsec.c		"ip macsec".
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:	Sabrina Dubroca <sd@queasysnail.net>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <linux/genetlink.h>
+#include <linux/if_ether.h>
+#include <linux/if_macsec.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+#include "ll_map.h"
+#include "libgenl.h"
+
+static const char * const validate_str[] = {
+	[MACSEC_VALIDATE_DISABLED] = "disabled",
+	[MACSEC_VALIDATE_CHECK] = "check",
+	[MACSEC_VALIDATE_STRICT] = "strict",
+};
+
+static const char * const offload_str[] = {
+	[MACSEC_OFFLOAD_OFF] = "off",
+	[MACSEC_OFFLOAD_PHY] = "phy",
+	[MACSEC_OFFLOAD_MAC] = "mac",
+};
+
+struct sci {
+	__u64 sci;
+	__u16 port;
+	char abuf[6];
+};
+
+struct sa_desc {
+	__u8 an;
+	union {
+		__u32 pn32;
+		__u64 pn64;
+	} pn;
+	__u8 key_id[MACSEC_KEYID_LEN];
+	__u32 key_len;
+	__u8 key[MACSEC_MAX_KEY_LEN];
+	__u8 active;
+	__u8 salt[MACSEC_SALT_LEN];
+	__u32 ssci;
+	bool xpn;
+	bool salt_set;
+	bool ssci_set;
+};
+
+struct cipher_args {
+	__u64 id;
+	__u8 icv_len;
+};
+
+struct txsc_desc {
+	int ifindex;
+	__u64 sci;
+	__be16 port;
+	struct cipher_args cipher;
+	__u32 window;
+	enum macsec_validation_type validate;
+	__u8 encoding_sa;
+};
+
+struct rxsc_desc {
+	int ifindex;
+	__u64 sci;
+	__u8 active;
+};
+
+#define MACSEC_BUFLEN 1024
+
+
+/* netlink socket */
+static struct rtnl_handle genl_rth;
+static int genl_family = -1;
+
+#define MACSEC_GENL_REQ(_req, _bufsiz, _cmd, _flags) \
+	GENL_REQUEST(_req, _bufsiz, genl_family, 0, MACSEC_GENL_VERSION, \
+		     _cmd, _flags)
+
+
+static void ipmacsec_usage(void)
+{
+	fprintf(stderr,
+		"Usage: ip macsec add DEV tx sa { 0..3 } [ OPTS ] key ID KEY\n"
+		"       ip macsec set DEV tx sa { 0..3 } [ OPTS ]\n"
+		"       ip macsec del DEV tx sa { 0..3 }\n"
+		"       ip macsec add DEV rx SCI [ on | off ]\n"
+		"       ip macsec set DEV rx SCI [ on | off ]\n"
+		"       ip macsec del DEV rx SCI\n"
+		"       ip macsec add DEV rx SCI sa { 0..3 } [ OPTS ] key ID KEY\n"
+		"       ip macsec set DEV rx SCI sa { 0..3 } [ OPTS ]\n"
+		"       ip macsec del DEV rx SCI sa { 0..3 }\n"
+		"       ip macsec show\n"
+		"       ip macsec show DEV\n"
+		"       ip macsec offload DEV [ off | phy | mac ]\n"
+		"where  OPTS := [ pn <u32> | xpn <u64> ] [ salt SALT ] [ ssci <u32> ] [ on | off ]\n"
+		"       ID   := 128-bit hex string\n"
+		"       KEY  := 128-bit or 256-bit hex string\n"
+		"       SCI  := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n"
+		"       SALT := 96-bit hex string\n");
+
+	exit(-1);
+}
+
+static bool ciphersuite_is_xpn(__u64 cid)
+{
+	return (cid == MACSEC_CIPHER_ID_GCM_AES_XPN_128 || cid == MACSEC_CIPHER_ID_GCM_AES_XPN_256);
+}
+
+static int get_an(__u8 *val, const char *arg)
+{
+	int ret = get_u8(val, arg, 0);
+
+	if (ret)
+		return ret;
+
+	if (*val > 3)
+		return -1;
+
+	return 0;
+}
+
+static int get_sci(__u64 *sci, const char *arg)
+{
+	return get_be64(sci, arg, 16);
+}
+
+static int get_ssci(__u32 *ssci, const char *arg)
+{
+	return get_be32(ssci, arg, 16);
+}
+
+static int get_port(__be16 *port, const char *arg)
+{
+	return get_be16(port, arg, 0);
+}
+
+#define _STR(a) #a
+#define STR(a) _STR(a)
+
+static void get_icvlen(__u8 *icvlen, char *arg)
+{
+	int ret = get_u8(icvlen, arg, 10);
+
+	if (ret)
+		invarg("expected ICV length", arg);
+
+	if (*icvlen < MACSEC_MIN_ICV_LEN || *icvlen > MACSEC_STD_ICV_LEN)
+		invarg("ICV length must be in the range {"
+		       STR(MACSEC_MIN_ICV_LEN) ".." STR(MACSEC_STD_ICV_LEN)
+		       "}", arg);
+}
+
+static bool get_sa(int *argcp, char ***argvp, __u8 *an)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	int ret;
+
+	if (argc <= 0 || strcmp(*argv, "sa") != 0)
+		return false;
+
+	NEXT_ARG();
+	ret = get_an(an, *argv);
+	if (ret)
+		invarg("expected an { 0..3 }", *argv);
+	argc--; argv++;
+
+	*argvp = argv;
+	*argcp = argc;
+	return true;
+}
+
+static int parse_sa_args(int *argcp, char ***argvp, struct sa_desc *sa)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	int ret;
+	bool active_set = false;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "pn") == 0) {
+			if (sa->pn.pn64 != 0)
+				duparg2("pn", "pn");
+			NEXT_ARG();
+			ret = get_u32(&sa->pn.pn32, *argv, 0);
+			if (ret)
+				invarg("expected pn", *argv);
+			if (sa->pn.pn32 == 0)
+				invarg("expected pn != 0", *argv);
+		} else if (strcmp(*argv, "xpn") == 0) {
+			if (sa->pn.pn64 != 0)
+				duparg2("xpn", "xpn");
+			NEXT_ARG();
+			ret = get_u64(&sa->pn.pn64, *argv, 0);
+			if (ret)
+				invarg("expected pn", *argv);
+			if (sa->pn.pn64 == 0)
+				invarg("expected pn != 0", *argv);
+			sa->xpn = true;
+		} else if (strcmp(*argv, "salt") == 0) {
+			unsigned int len;
+
+			if (sa->salt_set)
+				duparg2("salt", "salt");
+			NEXT_ARG();
+			if (!hexstring_a2n(*argv, sa->salt, MACSEC_SALT_LEN,
+					   &len))
+				invarg("expected salt", *argv);
+			sa->salt_set = true;
+		} else if (strcmp(*argv, "ssci") == 0) {
+			if (sa->ssci_set)
+				duparg2("ssci", "ssci");
+			NEXT_ARG();
+			ret = get_ssci(&sa->ssci, *argv);
+			if (ret)
+				invarg("expected ssci", *argv);
+			sa->ssci_set = true;
+		} else if (strcmp(*argv, "key") == 0) {
+			unsigned int len;
+
+			NEXT_ARG();
+			if (!hexstring_a2n(*argv, sa->key_id, MACSEC_KEYID_LEN,
+					   &len))
+				invarg("expected key id", *argv);
+			NEXT_ARG();
+			if (!hexstring_a2n(*argv, sa->key, MACSEC_MAX_KEY_LEN,
+					   &sa->key_len))
+				invarg("expected key", *argv);
+		} else if (strcmp(*argv, "on") == 0) {
+			if (active_set)
+				duparg2("on/off", "on");
+			sa->active = true;
+			active_set = true;
+		} else if (strcmp(*argv, "off") == 0) {
+			if (active_set)
+				duparg2("on/off", "off");
+			sa->active = false;
+			active_set = true;
+		} else {
+			fprintf(stderr, "macsec: unknown command \"%s\"?\n",
+				*argv);
+			ipmacsec_usage();
+		}
+
+		argv++; argc--;
+	}
+
+	*argvp = argv;
+	*argcp = argc;
+	return 0;
+}
+
+static __u64 make_sci(char *addr, __be16 port)
+{
+	__u64 sci;
+
+	memcpy(&sci, addr, ETH_ALEN);
+	memcpy(((char *)&sci) + ETH_ALEN, &port, sizeof(port));
+
+	return sci;
+}
+
+static bool sci_complete(bool sci, bool port, bool addr, bool port_only)
+{
+	return sci || (port && (addr || port_only));
+}
+
+static int get_sci_portaddr(struct sci *sci, int *argcp, char ***argvp,
+			    bool port_only, bool optional)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	int ret;
+	bool p = false, a = false, s = false;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "sci") == 0) {
+			if (p)
+				invarg("expected address", *argv);
+			if (a)
+				invarg("expected port", *argv);
+			NEXT_ARG();
+			ret = get_sci(&sci->sci, *argv);
+			if (ret)
+				invarg("expected sci", *argv);
+			s = true;
+		} else if (strcmp(*argv, "port") == 0) {
+			NEXT_ARG();
+			ret = get_port(&sci->port, *argv);
+			if (ret)
+				invarg("expected port", *argv);
+			if (sci->port == 0)
+				invarg("expected port != 0", *argv);
+			p = true;
+		} else if (strcmp(*argv, "address") == 0) {
+			NEXT_ARG();
+			ret = ll_addr_a2n(sci->abuf, sizeof(sci->abuf), *argv);
+			if (ret < 0)
+				invarg("expected lladdr", *argv);
+			a = true;
+		} else if (optional) {
+			break;
+		} else {
+			invarg("expected sci, port, or address", *argv);
+		}
+
+		argv++; argc--;
+
+		if (sci_complete(s, p, a, port_only))
+			break;
+	}
+
+	if (!optional && !sci_complete(s, p, a, port_only))
+		return -1;
+
+	if (p && a)
+		sci->sci = make_sci(sci->abuf, sci->port);
+
+	*argvp = argv;
+	*argcp = argc;
+
+	return p || a || s;
+}
+
+static bool parse_rxsci(int *argcp, char ***argvp, struct rxsc_desc *rxsc,
+			struct sa_desc *rxsa)
+{
+	struct sci sci = { 0 };
+
+	if (*argcp == 0 ||
+	    get_sci_portaddr(&sci, argcp, argvp, false, false) < 0) {
+		fprintf(stderr, "expected sci\n");
+		ipmacsec_usage();
+	}
+
+	rxsc->sci = sci.sci;
+
+	return get_sa(argcp, argvp, &rxsa->an);
+}
+
+static int parse_rxsci_args(int *argcp, char ***argvp, struct rxsc_desc *rxsc)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	bool active_set = false;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "on") == 0) {
+			if (active_set)
+				duparg2("on/off", "on");
+			rxsc->active = true;
+			active_set = true;
+		} else if (strcmp(*argv, "off") == 0) {
+			if (active_set)
+				duparg2("on/off", "off");
+			rxsc->active = false;
+			active_set = true;
+		} else {
+			fprintf(stderr, "macsec: unknown command \"%s\"?\n",
+				*argv);
+			ipmacsec_usage();
+		}
+
+		argv++; argc--;
+	}
+
+	*argvp = argv;
+	*argcp = argc;
+	return 0;
+}
+
+enum cmd {
+	CMD_ADD,
+	CMD_DEL,
+	CMD_UPD,
+	CMD_OFFLOAD,
+	__CMD_MAX
+};
+
+static const enum macsec_nl_commands macsec_commands[__CMD_MAX][2][2] = {
+	[CMD_ADD] = {
+		[0] = {-1, MACSEC_CMD_ADD_RXSC},
+		[1] = {MACSEC_CMD_ADD_TXSA, MACSEC_CMD_ADD_RXSA},
+	},
+	[CMD_UPD] = {
+		[0] = {-1, MACSEC_CMD_UPD_RXSC},
+		[1] = {MACSEC_CMD_UPD_TXSA, MACSEC_CMD_UPD_RXSA},
+	},
+	[CMD_DEL] = {
+		[0] = {-1, MACSEC_CMD_DEL_RXSC},
+		[1] = {MACSEC_CMD_DEL_TXSA, MACSEC_CMD_DEL_RXSA},
+	},
+	[CMD_OFFLOAD] = {
+		[0] = {-1, MACSEC_CMD_UPD_OFFLOAD },
+	},
+};
+
+static int do_modify_nl(enum cmd c, enum macsec_nl_commands cmd, int ifindex,
+			struct rxsc_desc *rxsc, struct sa_desc *sa)
+{
+	struct rtattr *attr_sa;
+
+	MACSEC_GENL_REQ(req, MACSEC_BUFLEN, cmd, NLM_F_REQUEST);
+
+	addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex);
+	if (rxsc) {
+		struct rtattr *attr_rxsc;
+
+		attr_rxsc = addattr_nest(&req.n, MACSEC_BUFLEN,
+					 MACSEC_ATTR_RXSC_CONFIG);
+		addattr64(&req.n, MACSEC_BUFLEN,
+			  MACSEC_RXSC_ATTR_SCI, rxsc->sci);
+		if (c != CMD_DEL && rxsc->active != 0xff)
+			addattr8(&req.n, MACSEC_BUFLEN,
+				 MACSEC_RXSC_ATTR_ACTIVE, rxsc->active);
+
+		addattr_nest_end(&req.n, attr_rxsc);
+	}
+
+	if (sa->an == 0xff)
+		goto talk;
+
+	attr_sa = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_SA_CONFIG);
+
+	addattr8(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_AN, sa->an);
+
+	if (c != CMD_DEL) {
+		if (sa->xpn) {
+			if (sa->pn.pn64)
+				addattr64(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN,
+					  sa->pn.pn64);
+			if (sa->salt_set)
+				addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_SALT,
+					  sa->salt, MACSEC_SALT_LEN);
+			if (sa->ssci_set)
+				addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_SSCI,
+					  sa->ssci);
+		} else {
+			if (sa->pn.pn32)
+				addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN,
+					  sa->pn.pn32);
+		}
+
+		if (sa->key_len) {
+			addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEYID,
+				  sa->key_id, MACSEC_KEYID_LEN);
+			addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEY,
+				  sa->key, sa->key_len);
+		}
+
+		if (sa->active != 0xff) {
+			addattr8(&req.n, MACSEC_BUFLEN,
+				 MACSEC_SA_ATTR_ACTIVE, sa->active);
+		}
+	}
+
+	addattr_nest_end(&req.n, attr_sa);
+
+talk:
+	if (rtnl_talk(&genl_rth, &req.n, NULL) < 0)
+		return -2;
+
+	return 0;
+}
+
+static bool check_sa_args(enum cmd c, struct sa_desc *sa)
+{
+	if (c == CMD_ADD) {
+		if (!sa->key_len) {
+			fprintf(stderr, "cannot create SA without key\n");
+			return -1;
+		}
+
+		if (sa->pn.pn64 == 0) {
+			fprintf(stderr, "must specify a packet number != 0\n");
+			return -1;
+		}
+	} else if (c == CMD_UPD) {
+		if (sa->key_len) {
+			fprintf(stderr, "cannot change key on SA\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int do_modify_txsa(enum cmd c, int argc, char **argv, int ifindex)
+{
+	struct sa_desc txsa = {0};
+	enum macsec_nl_commands cmd;
+
+	txsa.an = 0xff;
+	txsa.active = 0xff;
+
+	if (argc == 0 || !get_sa(&argc, &argv, &txsa.an))
+		ipmacsec_usage();
+
+	if (c == CMD_DEL)
+		goto modify;
+
+	if (parse_sa_args(&argc, &argv, &txsa))
+		return -1;
+
+	if (check_sa_args(c, &txsa))
+		return -1;
+
+modify:
+	cmd = macsec_commands[c][1][0];
+	return do_modify_nl(c, cmd, ifindex, NULL, &txsa);
+}
+
+static int do_modify_rxsci(enum cmd c, int argc, char **argv, int ifindex)
+{
+	struct rxsc_desc rxsc = {0};
+	struct sa_desc rxsa = {0};
+	bool sa_set;
+	enum macsec_nl_commands cmd;
+
+	rxsc.ifindex = ifindex;
+	rxsc.active = 0xff;
+	rxsa.an = 0xff;
+	rxsa.active = 0xff;
+
+	sa_set = parse_rxsci(&argc, &argv, &rxsc, &rxsa);
+
+	if (c == CMD_DEL)
+		goto modify;
+
+	if (sa_set && (parse_sa_args(&argc, &argv, &rxsa) ||
+		       check_sa_args(c, &rxsa)))
+		return -1;
+	if (!sa_set && parse_rxsci_args(&argc, &argv, &rxsc))
+		return -1;
+
+modify:
+	cmd = macsec_commands[c][sa_set][1];
+	return do_modify_nl(c, cmd, rxsc.ifindex, &rxsc, &rxsa);
+}
+
+static int do_modify(enum cmd c, int argc, char **argv)
+{
+	int ifindex;
+
+	if (argc == 0)
+		ipmacsec_usage();
+
+	ifindex = ll_name_to_index(*argv);
+	if (!ifindex) {
+		fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
+		return -1;
+	}
+	argc--; argv++;
+
+	if (argc == 0)
+		ipmacsec_usage();
+
+	if (strcmp(*argv, "tx") == 0)
+		return do_modify_txsa(c, argc-1, argv+1, ifindex);
+	if (strcmp(*argv, "rx") == 0)
+		return do_modify_rxsci(c, argc-1, argv+1, ifindex);
+
+	ipmacsec_usage();
+	return -1;
+}
+
+static int do_offload(enum cmd c, int argc, char **argv)
+{
+	enum macsec_offload offload;
+	struct rtattr *attr;
+	int ifindex, ret;
+
+	if (argc == 0)
+		ipmacsec_usage();
+
+	ifindex = ll_name_to_index(*argv);
+	if (!ifindex) {
+		fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
+		return -1;
+	}
+	argc--; argv++;
+
+	if (argc == 0)
+		ipmacsec_usage();
+
+	offload = parse_one_of("offload", *argv, offload_str, ARRAY_SIZE(offload_str), &ret);
+	if (ret)
+		ipmacsec_usage();
+
+	MACSEC_GENL_REQ(req, MACSEC_BUFLEN, macsec_commands[c][0][1], NLM_F_REQUEST);
+
+	addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex);
+
+	attr = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_OFFLOAD);
+	addattr8(&req.n, MACSEC_BUFLEN, MACSEC_OFFLOAD_ATTR_TYPE, offload);
+	addattr_nest_end(&req.n, attr);
+
+	if (rtnl_talk(&genl_rth, &req.n, NULL) < 0)
+		return -2;
+
+	return 0;
+}
+
+/* dump/show */
+static struct {
+	int ifindex;
+	__u64 sci;
+} filter;
+
+static int validate_dump(struct rtattr **attrs)
+{
+	return attrs[MACSEC_ATTR_IFINDEX] && attrs[MACSEC_ATTR_SECY] &&
+	       attrs[MACSEC_ATTR_TXSA_LIST] && attrs[MACSEC_ATTR_RXSC_LIST] &&
+	       attrs[MACSEC_ATTR_TXSC_STATS] && attrs[MACSEC_ATTR_SECY_STATS];
+
+}
+
+static int validate_secy_dump(struct rtattr **attrs)
+{
+	return attrs[MACSEC_SECY_ATTR_SCI] &&
+	       attrs[MACSEC_SECY_ATTR_ENCODING_SA] &&
+	       attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] &&
+	       attrs[MACSEC_SECY_ATTR_ICV_LEN] &&
+	       attrs[MACSEC_SECY_ATTR_PROTECT] &&
+	       attrs[MACSEC_SECY_ATTR_REPLAY] &&
+	       attrs[MACSEC_SECY_ATTR_OPER] &&
+	       attrs[MACSEC_SECY_ATTR_VALIDATE] &&
+	       attrs[MACSEC_SECY_ATTR_ENCRYPT] &&
+	       attrs[MACSEC_SECY_ATTR_INC_SCI] &&
+	       attrs[MACSEC_SECY_ATTR_ES] &&
+	       attrs[MACSEC_SECY_ATTR_SCB];
+}
+
+static void print_flag(struct rtattr *attrs[], const char *desc,
+		       int field)
+{
+	__u8 flag;
+
+	if (!attrs[field])
+		return;
+
+	flag = rta_getattr_u8(attrs[field]);
+	if (is_json_context())
+		print_bool(PRINT_JSON, desc, NULL, flag);
+	else {
+		print_string(PRINT_FP, NULL, "%s ", desc);
+		print_string(PRINT_FP, NULL, "%s ",
+			     flag ? "on" : "off");
+	}
+}
+
+static void print_key(struct rtattr *key)
+{
+	SPRINT_BUF(keyid);
+
+	print_string(PRINT_ANY, "key", " key %s\n",
+		     hexstring_n2a(RTA_DATA(key), RTA_PAYLOAD(key),
+				   keyid, sizeof(keyid)));
+}
+
+#define CIPHER_NAME_GCM_AES_128 "GCM-AES-128"
+#define CIPHER_NAME_GCM_AES_256 "GCM-AES-256"
+#define CIPHER_NAME_GCM_AES_XPN_128 "GCM-AES-XPN-128"
+#define CIPHER_NAME_GCM_AES_XPN_256 "GCM-AES-XPN-256"
+
+#define DEFAULT_CIPHER_NAME CIPHER_NAME_GCM_AES_128
+
+static const char *cs_id_to_name(__u64 cid)
+{
+	switch (cid) {
+	case MACSEC_DEFAULT_CIPHER_ID:
+		return DEFAULT_CIPHER_NAME;
+	case MACSEC_CIPHER_ID_GCM_AES_128:
+	     /* MACSEC_DEFAULT_CIPHER_ALT: */
+		return CIPHER_NAME_GCM_AES_128;
+	case MACSEC_CIPHER_ID_GCM_AES_256:
+		return CIPHER_NAME_GCM_AES_256;
+	case MACSEC_CIPHER_ID_GCM_AES_XPN_128:
+		return CIPHER_NAME_GCM_AES_XPN_128;
+	case MACSEC_CIPHER_ID_GCM_AES_XPN_256:
+		return CIPHER_NAME_GCM_AES_XPN_256;
+	default:
+		return "(unknown)";
+	}
+}
+
+static const char *validate_to_str(__u8 validate)
+{
+	if (validate >= ARRAY_SIZE(validate_str))
+		return "(unknown)";
+
+	return validate_str[validate];
+}
+
+static const char *offload_to_str(__u8 offload)
+{
+	if (offload >= ARRAY_SIZE(offload_str))
+		return "(unknown)";
+
+	return offload_str[offload];
+}
+
+static void print_attrs(struct rtattr *attrs[])
+{
+	print_flag(attrs, "protect", MACSEC_SECY_ATTR_PROTECT);
+
+	if (attrs[MACSEC_SECY_ATTR_VALIDATE]) {
+		__u8 val = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_VALIDATE]);
+
+		print_string(PRINT_ANY, "validate",
+			     "validate %s ", validate_to_str(val));
+	}
+
+	print_flag(attrs, "sc", MACSEC_RXSC_ATTR_ACTIVE);
+	print_flag(attrs, "sa", MACSEC_SA_ATTR_ACTIVE);
+	print_flag(attrs, "encrypt", MACSEC_SECY_ATTR_ENCRYPT);
+	print_flag(attrs, "send_sci", MACSEC_SECY_ATTR_INC_SCI);
+	print_flag(attrs, "end_station", MACSEC_SECY_ATTR_ES);
+	print_flag(attrs, "scb", MACSEC_SECY_ATTR_SCB);
+	print_flag(attrs, "replay", MACSEC_SECY_ATTR_REPLAY);
+
+	if (attrs[MACSEC_SECY_ATTR_WINDOW]) {
+		__u32 win = rta_getattr_u32(attrs[MACSEC_SECY_ATTR_WINDOW]);
+
+		print_uint(PRINT_ANY, "window", "window %u ", win);
+	}
+
+	if (attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]) {
+		__u64 cid = rta_getattr_u64(attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]);
+
+		print_nl();
+		print_string(PRINT_ANY, "cipher_suite",
+			     "    cipher suite: %s,", cs_id_to_name(cid));
+	}
+
+	if (attrs[MACSEC_SECY_ATTR_ICV_LEN]) {
+		__u8 icv_len = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_ICV_LEN]);
+
+		print_uint(PRINT_ANY, "icv_length",
+		     " using ICV length %u\n", icv_len);
+	}
+}
+
+static __u64 getattr_u64(const struct rtattr *stat)
+{
+	size_t len = RTA_PAYLOAD(stat);
+
+	switch (len) {
+	case sizeof(__u64):
+		return rta_getattr_u64(stat);
+	case sizeof(__u32):
+		return rta_getattr_u32(stat);
+	case sizeof(__u16):
+		return rta_getattr_u16(stat);
+	case sizeof(__u8):
+		return rta_getattr_u8(stat);
+	default:
+		fprintf(stderr, "invalid attribute length %zu\n",
+			len);
+		exit(-1);
+	}
+}
+
+static void print_fp_stats(const char *prefix,
+			   const char *names[], unsigned int num,
+			   struct rtattr *stats[])
+{
+	unsigned int i;
+	int pad;
+
+	printf("%sstats:", prefix);
+
+	for (i = 1; i < num; i++) {
+		if (!names[i])
+			continue;
+		printf(" %s", names[i]);
+	}
+
+	printf("\n%s      ", prefix);
+
+	for (i = 1; i < num; i++) {
+		if (!names[i])
+			continue;
+
+		pad = strlen(names[i]) + 1;
+		if (stats[i])
+			printf("%*llu", pad, getattr_u64(stats[i]));
+		else
+			printf("%*c", pad, '-');
+	}
+	printf("\n");
+}
+
+static void print_json_stats(const char *names[], unsigned int num,
+			     struct rtattr *stats[])
+{
+	unsigned int i;
+
+	for (i = 1; i < num; i++) {
+		if (!names[i] || !stats[i])
+			continue;
+
+		print_u64(PRINT_JSON, names[i],
+			   NULL, getattr_u64(stats[i]));
+	}
+}
+
+static void print_stats(const char *prefix,
+			const char *names[], unsigned int num,
+			struct rtattr *stats[])
+{
+
+	if (is_json_context())
+		print_json_stats(names, num, stats);
+	else
+		print_fp_stats(prefix, names, num, stats);
+}
+
+static const char *txsc_stats_names[NUM_MACSEC_TXSC_STATS_ATTR] = {
+	[MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
+	[MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
+	[MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED] = "OutOctetsProtected",
+	[MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED] = "OutOctetsEncrypted",
+};
+
+static void print_txsc_stats(const char *prefix, struct rtattr *attr)
+{
+	struct rtattr *stats[MACSEC_TXSC_STATS_ATTR_MAX + 1];
+
+	if (!attr || show_stats == 0)
+		return;
+
+	parse_rtattr_nested(stats, MACSEC_TXSC_STATS_ATTR_MAX, attr);
+
+	print_stats(prefix, txsc_stats_names, NUM_MACSEC_TXSC_STATS_ATTR,
+		    stats);
+}
+
+static const char *secy_stats_names[NUM_MACSEC_SECY_STATS_ATTR] = {
+	[MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED] = "OutPktsUntagged",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED] = "InPktsUntagged",
+	[MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG] = "OutPktsTooLong",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG] = "InPktsNoTag",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG] = "InPktsBadTag",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI] = "InPktsUnknownSCI",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI] = "InPktsNoSCI",
+	[MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN] = "InPktsOverrun",
+};
+
+static void print_secy_stats(const char *prefix, struct rtattr *attr)
+{
+	struct rtattr *stats[MACSEC_SECY_STATS_ATTR_MAX + 1];
+
+	if (!attr || show_stats == 0)
+		return;
+
+	parse_rtattr_nested(stats, MACSEC_SECY_STATS_ATTR_MAX, attr);
+
+	print_stats(prefix, secy_stats_names,
+		    NUM_MACSEC_SECY_STATS_ATTR, stats);
+}
+
+static const char *rxsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
+	[MACSEC_SA_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
+	[MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
+	[MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
+	[MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
+	[MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
+};
+
+static void print_rxsa_stats(const char *prefix, struct rtattr *attr)
+{
+	struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
+
+	if (!attr || show_stats == 0)
+		return;
+
+	parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
+
+	print_stats(prefix, rxsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
+}
+
+static const char *txsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
+	[MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
+	[MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
+};
+
+static void print_txsa_stats(const char *prefix, struct rtattr *attr)
+{
+	struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
+
+	if (!attr || show_stats == 0)
+		return;
+
+	parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
+
+	print_stats(prefix, txsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
+}
+
+static void print_tx_sc(const char *prefix, __u64 sci, __u8 encoding_sa,
+			bool is_xpn, struct rtattr *txsc_stats,
+			struct rtattr *secy_stats, struct rtattr *sa)
+{
+	struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
+	struct rtattr *a;
+	int rem;
+
+	print_string(PRINT_FP, NULL, "%s", prefix);
+	print_0xhex(PRINT_ANY, "sci",
+		    "TXSC: %016llx", ntohll(sci));
+	print_uint(PRINT_ANY, "encoding_sa",
+		   " on SA %d\n", encoding_sa);
+
+	print_secy_stats(prefix, secy_stats);
+	print_txsc_stats(prefix, txsc_stats);
+
+	open_json_array(PRINT_JSON, "sa_list");
+	rem = RTA_PAYLOAD(sa);
+	for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
+		bool state;
+
+		open_json_object(NULL);
+		parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
+		state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
+
+		print_string(PRINT_FP, NULL, "%s", prefix);
+		print_string(PRINT_FP, NULL, "%s", prefix);
+		print_uint(PRINT_ANY, "an", "%d:",
+			   rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
+		if (is_xpn) {
+			print_uint(PRINT_ANY, "pn", " PN %u,",
+				   rta_getattr_u64(sa_attr[MACSEC_SA_ATTR_PN]));
+			print_0xhex(PRINT_ANY, "ssci",
+				    "SSCI %08x",
+				    ntohl(rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_SSCI])));
+		} else {
+			print_uint(PRINT_ANY, "pn", " PN %u,",
+				   rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
+		}
+
+		print_bool(PRINT_JSON, "active", NULL, state);
+		print_string(PRINT_FP, NULL,
+			     " state %s,", state ? "on" : "off");
+		print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
+
+		print_txsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
+		close_json_object();
+	}
+	close_json_array(PRINT_JSON, NULL);
+}
+
+static const char *rxsc_stats_names[NUM_MACSEC_RXSC_STATS_ATTR] = {
+	[MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED] = "InOctetsValidated",
+	[MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED] = "InOctetsDecrypted",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED] = "InPktsUnchecked",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED] = "InPktsDelayed",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE] = "InPktsLate",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
+	[MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
+};
+
+static void print_rxsc_stats(const char *prefix, struct rtattr *attr)
+{
+	struct rtattr *stats[MACSEC_RXSC_STATS_ATTR_MAX + 1];
+
+	if (!attr || show_stats == 0)
+		return;
+
+	parse_rtattr_nested(stats, MACSEC_RXSC_STATS_ATTR_MAX, attr);
+
+	print_stats(prefix, rxsc_stats_names,
+		    NUM_MACSEC_RXSC_STATS_ATTR, stats);
+}
+
+static void print_rx_sc(const char *prefix, __be64 sci, __u8 active,
+			bool is_xpn, struct rtattr *rxsc_stats,
+			struct rtattr *sa)
+{
+	struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
+	struct rtattr *a;
+	int rem;
+
+	print_string(PRINT_FP, NULL, "%s", prefix);
+	print_0xhex(PRINT_ANY, "sci",
+		    "RXSC: %016llx,", ntohll(sci));
+	print_bool(PRINT_JSON, "active", NULL, active);
+	print_string(PRINT_FP, NULL,
+		     " state %s\n", active ? "on" : "off");
+	print_rxsc_stats(prefix, rxsc_stats);
+
+	open_json_array(PRINT_JSON, "sa_list");
+	rem = RTA_PAYLOAD(sa);
+	for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
+		bool state;
+
+		open_json_object(NULL);
+		parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
+		state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
+
+		print_string(PRINT_FP, NULL, "%s", prefix);
+		print_string(PRINT_FP, NULL, "%s", prefix);
+		print_uint(PRINT_ANY, "an", "%u:",
+			   rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
+		if (is_xpn) {
+			print_uint(PRINT_ANY, "pn", " PN %u,",
+				   rta_getattr_u64(sa_attr[MACSEC_SA_ATTR_PN]));
+			print_0xhex(PRINT_ANY, "ssci",
+				    "SSCI %08x",
+				    ntohl(rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_SSCI])));
+		} else {
+			print_uint(PRINT_ANY, "pn", " PN %u,",
+				   rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
+		}
+
+		print_bool(PRINT_JSON, "active", NULL, state);
+		print_string(PRINT_FP, NULL, " state %s,",
+			     state ? "on" : "off");
+
+		print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
+
+		print_rxsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
+		close_json_object();
+	}
+	close_json_array(PRINT_JSON, NULL);
+}
+
+static void print_rxsc_list(struct rtattr *sc, bool is_xpn)
+{
+	int rem = RTA_PAYLOAD(sc);
+	struct rtattr *c;
+
+	open_json_array(PRINT_JSON, "rx_sc");
+	for (c = RTA_DATA(sc); RTA_OK(c, rem); c = RTA_NEXT(c, rem)) {
+		struct rtattr *sc_attr[MACSEC_RXSC_ATTR_MAX + 1];
+
+		open_json_object(NULL);
+
+		parse_rtattr_nested(sc_attr, MACSEC_RXSC_ATTR_MAX, c);
+		print_rx_sc("    ",
+			    rta_getattr_u64(sc_attr[MACSEC_RXSC_ATTR_SCI]),
+			    rta_getattr_u32(sc_attr[MACSEC_RXSC_ATTR_ACTIVE]),
+			    is_xpn,
+			    sc_attr[MACSEC_RXSC_ATTR_STATS],
+			    sc_attr[MACSEC_RXSC_ATTR_SA_LIST]);
+		close_json_object();
+	}
+	close_json_array(PRINT_JSON, NULL);
+}
+
+static int process(struct nlmsghdr *n, void *arg)
+{
+	struct genlmsghdr *ghdr;
+	struct rtattr *attrs[MACSEC_ATTR_MAX + 1];
+	struct rtattr *attrs_secy[MACSEC_SECY_ATTR_MAX + 1];
+	int len = n->nlmsg_len;
+	int ifindex;
+	__u64 sci;
+	__u8 encoding_sa;
+	__u64 cid;
+	bool is_xpn = false;
+
+	if (n->nlmsg_type != genl_family)
+		return -1;
+
+	len -= NLMSG_LENGTH(GENL_HDRLEN);
+	if (len < 0)
+		return -1;
+
+	ghdr = NLMSG_DATA(n);
+	if (ghdr->cmd != MACSEC_CMD_GET_TXSC)
+		return 0;
+
+	parse_rtattr(attrs, MACSEC_ATTR_MAX, (void *) ghdr + GENL_HDRLEN, len);
+	if (!validate_dump(attrs)) {
+		fprintf(stderr, "incomplete dump message\n");
+		return -1;
+	}
+
+	ifindex = rta_getattr_u32(attrs[MACSEC_ATTR_IFINDEX]);
+	parse_rtattr_nested(attrs_secy, MACSEC_SECY_ATTR_MAX,
+			    attrs[MACSEC_ATTR_SECY]);
+
+	if (!validate_secy_dump(attrs_secy)) {
+		fprintf(stderr, "incomplete dump message\n");
+		return -1;
+	}
+
+	sci = rta_getattr_u64(attrs_secy[MACSEC_SECY_ATTR_SCI]);
+	encoding_sa = rta_getattr_u8(attrs_secy[MACSEC_SECY_ATTR_ENCODING_SA]);
+
+	if (filter.ifindex && ifindex != filter.ifindex)
+		return 0;
+
+	if (filter.sci && sci != filter.sci)
+		return 0;
+
+	open_json_object(NULL);
+	print_uint(PRINT_ANY, "ifindex", "%u: ", ifindex);
+	print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname",
+			   "%s: ", ll_index_to_name(ifindex));
+
+	print_attrs(attrs_secy);
+
+	cid = rta_getattr_u64(attrs_secy[MACSEC_SECY_ATTR_CIPHER_SUITE]);
+	is_xpn = ciphersuite_is_xpn(cid);
+	print_tx_sc("    ", sci, encoding_sa, is_xpn,
+		    attrs[MACSEC_ATTR_TXSC_STATS],
+		    attrs[MACSEC_ATTR_SECY_STATS],
+		    attrs[MACSEC_ATTR_TXSA_LIST]);
+
+	if (attrs[MACSEC_ATTR_RXSC_LIST])
+		print_rxsc_list(attrs[MACSEC_ATTR_RXSC_LIST], is_xpn);
+
+	if (attrs[MACSEC_ATTR_OFFLOAD]) {
+		struct rtattr *attrs_offload[MACSEC_OFFLOAD_ATTR_MAX + 1];
+		__u8 offload;
+
+		parse_rtattr_nested(attrs_offload, MACSEC_OFFLOAD_ATTR_MAX,
+				    attrs[MACSEC_ATTR_OFFLOAD]);
+
+		offload = rta_getattr_u8(attrs_offload[MACSEC_OFFLOAD_ATTR_TYPE]);
+		print_string(PRINT_ANY, "offload",
+			     "    offload: %s ", offload_to_str(offload));
+		print_nl();
+	}
+
+	close_json_object();
+
+	return 0;
+}
+
+static int do_dump(int ifindex)
+{
+	MACSEC_GENL_REQ(req, MACSEC_BUFLEN, MACSEC_CMD_GET_TXSC,
+			NLM_F_REQUEST | NLM_F_DUMP);
+
+	memset(&filter, 0, sizeof(filter));
+	filter.ifindex = ifindex;
+
+	req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq;
+	if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0) {
+		perror("Failed to send dump request");
+		exit(1);
+	}
+
+	new_json_obj(json);
+	if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) {
+		delete_json_obj();
+		fprintf(stderr, "Dump terminated\n");
+		exit(1);
+	}
+	delete_json_obj();
+
+	return 0;
+}
+
+static int do_show(int argc, char **argv)
+{
+	int ifindex;
+
+	if (argc == 0)
+		return do_dump(0);
+
+	ifindex = ll_name_to_index(*argv);
+	if (ifindex == 0) {
+		fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
+		return -1;
+	}
+
+	argc--, argv++;
+	if (argc == 0)
+		return do_dump(ifindex);
+
+	ipmacsec_usage();
+	return -1;
+}
+
+int do_ipmacsec(int argc, char **argv)
+{
+	if (argc < 1)
+		ipmacsec_usage();
+
+	if (matches(*argv, "help") == 0)
+		ipmacsec_usage();
+
+	if (genl_init_handle(&genl_rth, MACSEC_GENL_NAME, &genl_family))
+		exit(1);
+
+	if (matches(*argv, "show") == 0)
+		return do_show(argc-1, argv+1);
+
+	if (matches(*argv, "add") == 0)
+		return do_modify(CMD_ADD, argc-1, argv+1);
+	if (matches(*argv, "set") == 0)
+		return do_modify(CMD_UPD, argc-1, argv+1);
+	if (matches(*argv, "delete") == 0)
+		return do_modify(CMD_DEL, argc-1, argv+1);
+	if (matches(*argv, "offload") == 0)
+		return do_offload(CMD_OFFLOAD, argc-1, argv+1);
+
+	fprintf(stderr, "Command \"%s\" is unknown, try \"ip macsec help\".\n",
+		*argv);
+	exit(-1);
+}
+
+/* device creation */
+static void macsec_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+	if (!tb)
+		return;
+
+	if (tb[IFLA_MACSEC_SCI]) {
+		if (is_json_context()) {
+			SPRINT_BUF(b1);
+
+			snprintf(b1, sizeof(b1), "%016llx",
+				 ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
+			print_string(PRINT_JSON, "sci", NULL, b1);
+		} else {
+			fprintf(f, "sci %016llx ",
+				ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
+		}
+	}
+
+	print_flag(tb, "protect", IFLA_MACSEC_PROTECT);
+
+	if (tb[IFLA_MACSEC_CIPHER_SUITE]) {
+		__u64 csid
+			= rta_getattr_u64(tb[IFLA_MACSEC_CIPHER_SUITE]);
+
+		print_string(PRINT_ANY,
+			     "cipher_suite",
+			     "cipher %s ",
+			     cs_id_to_name(csid));
+	}
+
+	if (tb[IFLA_MACSEC_ICV_LEN]) {
+		if (is_json_context()) {
+			char b2[4];
+
+			snprintf(b2, sizeof(b2), "%hhu",
+				 rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
+			print_uint(PRINT_JSON, "icv_len", NULL, atoi(b2));
+		} else {
+			fprintf(f, "icvlen %hhu ",
+				rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
+		}
+	}
+
+	if (tb[IFLA_MACSEC_ENCODING_SA]) {
+		if (is_json_context()) {
+			char b2[4];
+
+			snprintf(b2, sizeof(b2), "%hhu",
+				 rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
+			print_uint(PRINT_JSON, "encoding_sa", NULL, atoi(b2));
+		} else {
+			fprintf(f, "encodingsa %hhu ",
+				rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
+		}
+	}
+
+	if (tb[IFLA_MACSEC_VALIDATION]) {
+		__u8 val = rta_getattr_u8(tb[IFLA_MACSEC_VALIDATION]);
+
+		print_string(PRINT_ANY,
+			     "validation",
+			     "validate %s ",
+			     validate_to_str(val));
+	}
+
+	if (tb[IFLA_MACSEC_OFFLOAD]) {
+		__u8 val = rta_getattr_u8(tb[IFLA_MACSEC_OFFLOAD]);
+
+		print_string(PRINT_ANY,
+			     "offload",
+			     "offload %s ",
+			     offload_to_str(val));
+	}
+
+	const char *inc_sci, *es, *replay;
+
+	if (is_json_context()) {
+		inc_sci = "inc_sci";
+		replay = "replay_protect";
+		es = "es";
+	} else {
+		inc_sci = "send_sci";
+		es = "end_station";
+		replay = "replay";
+	}
+
+	print_flag(tb, "encrypt", IFLA_MACSEC_ENCRYPT);
+	print_flag(tb, inc_sci, IFLA_MACSEC_INC_SCI);
+	print_flag(tb, es, IFLA_MACSEC_ES);
+	print_flag(tb, "scb", IFLA_MACSEC_SCB);
+	print_flag(tb, replay, IFLA_MACSEC_REPLAY_PROTECT);
+
+	if (tb[IFLA_MACSEC_WINDOW])
+		print_int(PRINT_ANY,
+			  "window",
+			  "window %d ",
+			  rta_getattr_u32(tb[IFLA_MACSEC_WINDOW]));
+}
+
+static bool check_txsc_flags(bool es, bool scb, bool sci)
+{
+	if (sci && (es || scb))
+		return false;
+	if (es && scb)
+		return false;
+	return true;
+}
+
+static void usage(FILE *f)
+{
+	fprintf(f,
+		"Usage: ... macsec [ [ address <lladdr> ] port { 1..2^16-1 } | sci <u64> ]\n"
+		"                  [ cipher { default | gcm-aes-128 | gcm-aes-256 | gcm-aes-xpn-128 | gcm-aes-xpn-256 } ]\n"
+		"                  [ icvlen { 8..16 } ]\n"
+		"                  [ encrypt { on | off } ]\n"
+		"                  [ send_sci { on | off } ]\n"
+		"                  [ end_station { on | off } ]\n"
+		"                  [ scb { on | off } ]\n"
+		"                  [ protect { on | off } ]\n"
+		"                  [ replay { on | off} window { 0..2^32-1 } ]\n"
+		"                  [ validate { strict | check | disabled } ]\n"
+		"                  [ encodingsa { 0..3 } ]\n"
+		"                  [ offload { mac | phy | off } ]\n"
+		);
+}
+
+static int macsec_parse_opt(struct link_util *lu, int argc, char **argv,
+			    struct nlmsghdr *n)
+{
+	int ret;
+	__u8 encoding_sa = 0xff;
+	__u32 window = -1;
+	enum macsec_offload offload;
+	struct cipher_args cipher = {0};
+	enum macsec_validation_type validate;
+	bool es = false, scb = false, send_sci = false;
+	int replay_protect = -1;
+	struct sci sci = { 0 };
+
+	ret = get_sci_portaddr(&sci, &argc, &argv, true, true);
+	if (ret < 0) {
+		fprintf(stderr, "expected sci\n");
+		return -1;
+	}
+
+	if (ret > 0) {
+		if (sci.sci)
+			addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_SCI,
+				  &sci.sci, sizeof(sci.sci));
+		else
+			addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_PORT,
+				  &sci.port, sizeof(sci.port));
+	}
+
+	while (argc > 0) {
+		if (strcmp(*argv, "cipher") == 0) {
+			NEXT_ARG();
+			if (cipher.id)
+				duparg("cipher", *argv);
+			if (strcmp(*argv, "default") == 0)
+				cipher.id = MACSEC_DEFAULT_CIPHER_ID;
+			else if (strcmp(*argv, "gcm-aes-128") == 0 ||
+			         strcmp(*argv, "GCM-AES-128") == 0)
+				cipher.id = MACSEC_CIPHER_ID_GCM_AES_128;
+			else if (strcmp(*argv, "gcm-aes-256") == 0 ||
+			         strcmp(*argv, "GCM-AES-256") == 0)
+				cipher.id = MACSEC_CIPHER_ID_GCM_AES_256;
+			else if (strcmp(*argv, "gcm-aes-xpn-128") == 0 ||
+				 strcmp(*argv, "GCM-AES-XPN-128") == 0)
+				cipher.id = MACSEC_CIPHER_ID_GCM_AES_XPN_128;
+			else if (strcmp(*argv, "gcm-aes-xpn-256") == 0 ||
+				 strcmp(*argv, "GCM-AES-XPN-256") == 0)
+				cipher.id = MACSEC_CIPHER_ID_GCM_AES_XPN_256;
+			else
+				invarg("expected: default, gcm-aes-128, gcm-aes-256,"
+				       " gcm-aes-xpn-128 or gcm-aes-xpn-256", *argv);
+		} else if (strcmp(*argv, "icvlen") == 0) {
+			NEXT_ARG();
+			if (cipher.icv_len)
+				duparg("icvlen", *argv);
+			get_icvlen(&cipher.icv_len, *argv);
+		} else if (strcmp(*argv, "encrypt") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("encrypt", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCRYPT, i);
+		} else if (strcmp(*argv, "send_sci") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("send_sci", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			send_sci = i;
+			addattr8(n, MACSEC_BUFLEN,
+				 IFLA_MACSEC_INC_SCI, send_sci);
+		} else if (strcmp(*argv, "end_station") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("end_station", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			es = i;
+			addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ES, es);
+		} else if (strcmp(*argv, "scb") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("scb", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			scb = i;
+			addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_SCB, scb);
+		} else if (strcmp(*argv, "protect") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("protect", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_PROTECT, i);
+		} else if (strcmp(*argv, "replay") == 0) {
+			NEXT_ARG();
+			int i;
+
+			i = parse_on_off("replay", *argv, &ret);
+			if (ret != 0)
+				return ret;
+			replay_protect = !!i;
+		} else if (strcmp(*argv, "window") == 0) {
+			NEXT_ARG();
+			ret = get_u32(&window, *argv, 0);
+			if (ret)
+				invarg("expected replay window size", *argv);
+		} else if (strcmp(*argv, "validate") == 0) {
+			NEXT_ARG();
+			validate = parse_one_of("validate", *argv, validate_str,
+						ARRAY_SIZE(validate_str), &ret);
+			if (ret != 0)
+				return ret;
+			addattr8(n, MACSEC_BUFLEN,
+				 IFLA_MACSEC_VALIDATION, validate);
+		} else if (strcmp(*argv, "encodingsa") == 0) {
+			if (encoding_sa != 0xff)
+				duparg2("encodingsa", "encodingsa");
+			NEXT_ARG();
+			ret = get_an(&encoding_sa, *argv);
+			if (ret)
+				invarg("expected an { 0..3 }", *argv);
+		} else if (strcmp(*argv, "offload") == 0) {
+			NEXT_ARG();
+			offload = parse_one_of("offload", *argv, offload_str,
+					       ARRAY_SIZE(offload_str), &ret);
+			if (ret != 0)
+				return ret;
+			addattr8(n, MACSEC_BUFLEN,
+				 IFLA_MACSEC_OFFLOAD, offload);
+		} else {
+			fprintf(stderr, "macsec: unknown command \"%s\"?\n",
+				*argv);
+			usage(stderr);
+			return -1;
+		}
+
+		argv++; argc--;
+	}
+
+	if (!check_txsc_flags(es, scb, send_sci)) {
+		fprintf(stderr,
+			"invalid combination of send_sci/end_station/scb\n");
+		return -1;
+	}
+
+	if (window != -1 && replay_protect == -1) {
+		fprintf(stderr,
+			"replay window set, but replay protection not enabled. did you mean 'replay on window %u'?\n",
+			window);
+		return -1;
+	} else if (window == -1 && replay_protect == 1) {
+		fprintf(stderr,
+			"replay protection enabled, but no window set. did you mean 'replay on window VALUE'?\n");
+		return -1;
+	}
+
+	if (cipher.id)
+		addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE,
+			  &cipher.id, sizeof(cipher.id));
+	if (cipher.icv_len)
+		addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN,
+			  &cipher.icv_len, sizeof(cipher.icv_len));
+
+	if (replay_protect != -1) {
+		addattr32(n, MACSEC_BUFLEN, IFLA_MACSEC_WINDOW, window);
+		addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_REPLAY_PROTECT,
+			 replay_protect);
+	}
+
+	if (encoding_sa != 0xff) {
+		addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCODING_SA,
+			  &encoding_sa, sizeof(encoding_sa));
+	}
+
+	return 0;
+}
+
+static void macsec_print_help(struct link_util *lu, int argc, char **argv,
+			      FILE *f)
+{
+	usage(f);
+}
+
+struct link_util macsec_link_util = {
+	.id = "macsec",
+	.maxattr = IFLA_MACSEC_MAX,
+	.parse_opt = macsec_parse_opt,
+	.print_help = macsec_print_help,
+	.print_opt = macsec_print_opt,
+};