diff options
Diffstat (limited to 'ip/ipmacsec.c')
| -rw-r--r-- | ip/ipmacsec.c | 1316 |
1 files changed, 1316 insertions, 0 deletions
diff --git a/ip/ipmacsec.c b/ip/ipmacsec.c new file mode 100644 index 00000000..ecc371a5 --- /dev/null +++ b/ip/ipmacsec.c @@ -0,0 +1,1316 @@ +/* + * 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 *values_on_off[] = { "off", "on" }; + +static const char *VALIDATE_STR[] = { + [MACSEC_VALIDATE_DISABLED] = "disabled", + [MACSEC_VALIDATE_CHECK] = "check", + [MACSEC_VALIDATE_STRICT] = "strict", +}; + +struct sci { + __u64 sci; + __u16 port; + char abuf[6]; +}; + +struct sa_desc { + __u8 an; + __u32 pn; + __u8 key_id[MACSEC_KEYID_LEN]; + __u32 key_len; + __u8 key[MACSEC_MAX_KEY_LEN]; + __u8 active; +}; + +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"); + fprintf(stderr, " ip macsec set DEV tx sa { 0..3 } [ OPTS ]\n"); + fprintf(stderr, " ip macsec del DEV tx sa { 0..3 }\n"); + fprintf(stderr, " ip macsec add DEV rx SCI [ on | off ]\n"); + fprintf(stderr, " ip macsec set DEV rx SCI [ on | off ]\n"); + fprintf(stderr, " ip macsec del DEV rx SCI\n"); + fprintf(stderr, " ip macsec add DEV rx SCI sa { 0..3 } [ OPTS ] key ID KEY\n"); + fprintf(stderr, " ip macsec set DEV rx SCI sa { 0..3 } [ OPTS ]\n"); + fprintf(stderr, " ip macsec del DEV rx SCI sa { 0..3 }\n"); + fprintf(stderr, " ip macsec show\n"); + fprintf(stderr, " ip macsec show DEV\n"); + fprintf(stderr, "where OPTS := [ pn <u32> ] [ on | off ]\n"); + fprintf(stderr, " ID := 128-bit hex string\n"); + fprintf(stderr, " KEY := 128-bit hex string\n"); + fprintf(stderr, " SCI := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n"); + + exit(-1); +} + +static int one_of(const char *msg, const char *realval, const char **list, + size_t len, int *index) +{ + int i; + + for (i = 0; i < len; i++) { + if (matches(realval, list[i]) == 0) { + *index = i; + return 0; + } + } + + fprintf(stderr, "Error: argument of \"%s\" must be one of ", msg); + for (i = 0; i < len; i++) + fprintf(stderr, "\"%s\", ", list[i]); + fprintf(stderr, "not \"%s\"\n", realval); + return -1; +} + +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_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 != 0) + duparg2("pn", "pn"); + NEXT_ARG(); + ret = get_u32(&sa->pn, *argv, 0); + if (ret) + invarg("expected pn", *argv); + if (sa->pn == 0) + invarg("expected pn != 0", *argv); + } 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_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}, + }, +}; + +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->pn) + addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN, + sa->pn); + + 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) < 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 == 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; +} + +/* 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(FILE *f, struct rtattr *attrs[], const char *desc, + int field) +{ + if (attrs[field]) { + const char *v = values_on_off[!!rta_getattr_u8(attrs[field])]; + + if (is_json_context()) + print_string(PRINT_JSON, desc, NULL, v); + else + fprintf(f, "%s %s ", desc, v); + } +} + +#define DEFAULT_CIPHER_NAME "GCM-AES-128" + +static const char *cs_id_to_name(__u64 cid) +{ + switch (cid) { + case MACSEC_DEFAULT_CIPHER_ID: + case MACSEC_DEFAULT_CIPHER_ALT: + return DEFAULT_CIPHER_NAME; + default: + return "(unknown)"; + } +} + +static void print_cipher_suite(const char *prefix, __u64 cid, __u8 icv_len) +{ + printf("%scipher suite: %s, using ICV length %d\n", prefix, + cs_id_to_name(cid), icv_len); +} + +static void print_attrs(const char *prefix, struct rtattr *attrs[]) +{ + print_flag(stdout, attrs, "protect", MACSEC_SECY_ATTR_PROTECT); + + if (attrs[MACSEC_SECY_ATTR_VALIDATE]) { + __u8 val = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_VALIDATE]); + + printf("validate %s ", VALIDATE_STR[val]); + } + + print_flag(stdout, attrs, "sc", MACSEC_RXSC_ATTR_ACTIVE); + print_flag(stdout, attrs, "sa", MACSEC_SA_ATTR_ACTIVE); + print_flag(stdout, attrs, "encrypt", MACSEC_SECY_ATTR_ENCRYPT); + print_flag(stdout, attrs, "send_sci", MACSEC_SECY_ATTR_INC_SCI); + print_flag(stdout, attrs, "end_station", MACSEC_SECY_ATTR_ES); + print_flag(stdout, attrs, "scb", MACSEC_SECY_ATTR_SCB); + + print_flag(stdout, attrs, "replay", MACSEC_SECY_ATTR_REPLAY); + if (attrs[MACSEC_SECY_ATTR_WINDOW]) { + printf("window %d ", + rta_getattr_u32(attrs[MACSEC_SECY_ATTR_WINDOW])); + } + + if (attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] && + attrs[MACSEC_SECY_ATTR_ICV_LEN]) { + printf("\n"); + print_cipher_suite(prefix, + rta_getattr_u64(attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]), + rta_getattr_u8(attrs[MACSEC_SECY_ATTR_ICV_LEN])); + } + +} + +static void print_one_stat(const char **names, struct rtattr **attr, int idx, + bool long_stat) +{ + int pad = strlen(names[idx]) + 1; + + if (attr[idx]) { + if (long_stat) + printf("%*llu", pad, rta_getattr_u64(attr[idx])); + else + printf("%*u", pad, rta_getattr_u32(attr[idx])); + } else { + printf("%*c", pad, '-'); + } +} + +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]; + int i; + + if (!attr || show_stats == 0) + return; + + parse_rtattr_nested(stats, MACSEC_TXSC_STATS_ATTR_MAX + 1, attr); + printf("%sstats:", prefix); + + for (i = 1; i < NUM_MACSEC_TXSC_STATS_ATTR; i++) { + if (!txsc_stats_names[i]) + continue; + printf(" %s", txsc_stats_names[i]); + } + + printf("\n%s ", prefix); + + for (i = 1; i < NUM_MACSEC_TXSC_STATS_ATTR; i++) { + if (!txsc_stats_names[i]) + continue; + print_one_stat(txsc_stats_names, stats, i, true); + } + + printf("\n"); +} + +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]; + int i; + + if (!attr || show_stats == 0) + return; + + parse_rtattr_nested(stats, MACSEC_SECY_STATS_ATTR_MAX + 1, attr); + printf("%sstats:", prefix); + + for (i = 1; i < NUM_MACSEC_SECY_STATS_ATTR; i++) { + if (!secy_stats_names[i]) + continue; + printf(" %s", secy_stats_names[i]); + } + + printf("\n%s ", prefix); + + for (i = 1; i < NUM_MACSEC_SECY_STATS_ATTR; i++) { + if (!secy_stats_names[i]) + continue; + print_one_stat(secy_stats_names, stats, i, true); + } + + printf("\n"); +} + +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]; + int i; + + if (!attr || show_stats == 0) + return; + + parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX + 1, attr); + printf("%s%s ", prefix, prefix); + + for (i = 1; i < NUM_MACSEC_SA_STATS_ATTR; i++) { + if (!rxsa_stats_names[i]) + continue; + printf(" %s", rxsa_stats_names[i]); + } + + printf("\n%s%s ", prefix, prefix); + + for (i = 1; i < NUM_MACSEC_SA_STATS_ATTR; i++) { + if (!rxsa_stats_names[i]) + continue; + print_one_stat(rxsa_stats_names, stats, i, false); + } + + printf("\n"); +} + +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 + 1, attr); + printf("%s%s %s %s\n", prefix, prefix, + txsa_stats_names[MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED], + txsa_stats_names[MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED]); + printf("%s%s ", prefix, prefix); + + print_one_stat(txsa_stats_names, stats, + MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED, false); + print_one_stat(txsa_stats_names, stats, + MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED, false); + printf("\n"); +} + +static void print_tx_sc(const char *prefix, __u64 sci, __u8 encoding_sa, + 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; + + printf("%sTXSC: %016llx on SA %d\n", prefix, ntohll(sci), encoding_sa); + print_secy_stats(prefix, secy_stats); + print_txsc_stats(prefix, txsc_stats); + + rem = RTA_PAYLOAD(sa); + for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) { + SPRINT_BUF(keyid); + bool state; + + parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX + 1, a); + state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]); + printf("%s%s%d: PN %u, state %s, key %s\n", prefix, prefix, + rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]), + rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]), + values_on_off[state], + hexstring_n2a(RTA_DATA(sa_attr[MACSEC_SA_ATTR_KEYID]), + RTA_PAYLOAD(sa_attr[MACSEC_SA_ATTR_KEYID]), + keyid, sizeof(keyid))); + print_txsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]); + } +} + +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]; + int i; + + if (!attr || show_stats == 0) + return; + + parse_rtattr_nested(stats, MACSEC_RXSC_STATS_ATTR_MAX + 1, attr); + printf("%sstats:", prefix); + for (i = 1; i < NUM_MACSEC_RXSC_STATS_ATTR; i++) { + if (!rxsc_stats_names[i]) + continue; + printf(" %s", rxsc_stats_names[i]); + } + + printf("\n%s ", prefix); + + for (i = 1; i < NUM_MACSEC_RXSC_STATS_ATTR; i++) { + if (!rxsc_stats_names[i]) + continue; + print_one_stat(rxsc_stats_names, stats, i, true); + } + + printf("\n"); +} + +static void print_rx_sc(const char *prefix, __u64 sci, __u8 active, + struct rtattr *rxsc_stats, struct rtattr *sa) +{ + struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1]; + struct rtattr *a; + int rem; + + printf("%sRXSC: %016llx, state %s\n", prefix, ntohll(sci), + values_on_off[!!active]); + print_rxsc_stats(prefix, rxsc_stats); + + rem = RTA_PAYLOAD(sa); + for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) { + SPRINT_BUF(keyid); + bool state; + + parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX + 1, a); + state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]); + printf("%s%s%d: PN %u, state %s, key %s\n", prefix, prefix, + rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]), + rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]), + values_on_off[state], + hexstring_n2a(RTA_DATA(sa_attr[MACSEC_SA_ATTR_KEYID]), + RTA_PAYLOAD(sa_attr[MACSEC_SA_ATTR_KEYID]), + keyid, sizeof(keyid))); + print_rxsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]); + } +} + +static int process(const struct sockaddr_nl *who, struct nlmsghdr *n, + void *arg) +{ + struct genlmsghdr *ghdr; + struct rtattr *attrs[MACSEC_ATTR_MAX + 1], *sc, *c; + struct rtattr *attrs_secy[MACSEC_SECY_ATTR_MAX + 1]; + int len = n->nlmsg_len; + int ifindex; + __u64 sci; + __u8 encoding_sa; + int rem; + + 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)) { + printf("incomplete dump message\n"); + return -1; + } + + ifindex = rta_getattr_u32(attrs[MACSEC_ATTR_IFINDEX]); + parse_rtattr_nested(attrs_secy, MACSEC_SECY_ATTR_MAX + 1, + attrs[MACSEC_ATTR_SECY]); + + if (!validate_secy_dump(attrs_secy)) { + printf("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; + + printf("%d: %s: ", ifindex, ll_index_to_name(ifindex)); + print_attrs(" ", attrs_secy); + + print_tx_sc(" ", sci, encoding_sa, + attrs[MACSEC_ATTR_TXSC_STATS], + attrs[MACSEC_ATTR_SECY_STATS], + attrs[MACSEC_ATTR_TXSA_LIST]); + + if (!attrs[MACSEC_ATTR_RXSC_LIST]) + return 0; + + sc = attrs[MACSEC_ATTR_RXSC_LIST]; + rem = RTA_PAYLOAD(sc); + for (c = RTA_DATA(sc); RTA_OK(c, rem); c = RTA_NEXT(c, rem)) { + struct rtattr *sc_attr[MACSEC_RXSC_ATTR_MAX + 1]; + + parse_rtattr_nested(sc_attr, MACSEC_RXSC_ATTR_MAX + 1, c); + print_rx_sc(" ", + rta_getattr_u64(sc_attr[MACSEC_RXSC_ATTR_SCI]), + rta_getattr_u32(sc_attr[MACSEC_RXSC_ATTR_ACTIVE]), + sc_attr[MACSEC_RXSC_ATTR_STATS], + sc_attr[MACSEC_RXSC_ATTR_SA_LIST]); + } + + 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); + } + + if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) { + fprintf(stderr, "Dump terminated\n"); + exit(1); + } + + 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); + + 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(f, 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_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(f, tb, "encrypt", IFLA_MACSEC_ENCRYPT); + print_flag(f, tb, inc_sci, IFLA_MACSEC_INC_SCI); + print_flag(f, tb, es, IFLA_MACSEC_ES); + print_flag(f, tb, "scb", IFLA_MACSEC_SCB); + print_flag(f, 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 } ]\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" + ); +} + +static int macsec_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *hdr) +{ + int ret; + __u8 encoding_sa = 0xff; + __u32 window = -1; + 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(hdr, MACSEC_BUFLEN, IFLA_MACSEC_SCI, + &sci.sci, sizeof(sci.sci)); + else + addattr_l(hdr, 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 || + strcmp(*argv, "gcm-aes-128") == 0 || + strcmp(*argv, "GCM-AES-128") == 0) + cipher.id = MACSEC_DEFAULT_CIPHER_ID; + else + invarg("expected: default or gcm-aes-128", + *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; + + ret = one_of("encrypt", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + if (ret != 0) + return ret; + addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ENCRYPT, i); + } else if (strcmp(*argv, "send_sci") == 0) { + NEXT_ARG(); + int i; + + ret = one_of("send_sci", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + if (ret != 0) + return ret; + send_sci = i; + addattr8(hdr, MACSEC_BUFLEN, + IFLA_MACSEC_INC_SCI, send_sci); + } else if (strcmp(*argv, "end_station") == 0) { + NEXT_ARG(); + int i; + + ret = one_of("end_station", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + if (ret != 0) + return ret; + es = i; + addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ES, es); + } else if (strcmp(*argv, "scb") == 0) { + NEXT_ARG(); + int i; + + ret = one_of("scb", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + if (ret != 0) + return ret; + scb = i; + addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_SCB, scb); + } else if (strcmp(*argv, "protect") == 0) { + NEXT_ARG(); + int i; + + ret = one_of("protect", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + if (ret != 0) + return ret; + addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_PROTECT, i); + } else if (strcmp(*argv, "replay") == 0) { + NEXT_ARG(); + int i; + + ret = one_of("replay", *argv, values_on_off, + ARRAY_SIZE(values_on_off), &i); + 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(); + ret = one_of("validate", *argv, + VALIDATE_STR, ARRAY_SIZE(VALIDATE_STR), + (int *)&validate); + if (ret != 0) + return ret; + addattr8(hdr, 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 { + 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(hdr, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE, + &cipher.id, sizeof(cipher.id)); + if (cipher.icv_len) + addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN, + &cipher.icv_len, sizeof(cipher.icv_len)); + + if (replay_protect != -1) { + addattr32(hdr, MACSEC_BUFLEN, IFLA_MACSEC_WINDOW, window); + addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_REPLAY_PROTECT, + replay_protect); + } + + if (encoding_sa != 0xff) { + addattr_l(hdr, 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, +}; |