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Diffstat (limited to 'ip/link_iptnl.c')
-rw-r--r--ip/link_iptnl.c278
1 files changed, 198 insertions, 80 deletions
diff --git a/ip/link_iptnl.c b/ip/link_iptnl.c
index 9d6bc986..6a725e91 100644
--- a/ip/link_iptnl.c
+++ b/ip/link_iptnl.c
@@ -16,6 +16,7 @@
#include <sys/socket.h>
#include <arpa/inet.h>
+#include <linux/in.h>
#include <linux/ip.h>
#include <linux/if_tunnel.h>
#include "rt_names.h"
@@ -25,22 +26,40 @@
static void print_usage(FILE *f, int sit)
{
- fprintf(f, "Usage: ip link { add | set | change | replace | del } NAME\n");
- fprintf(f, " type { ipip | sit } [ remote ADDR ] [ local ADDR ]\n");
- fprintf(f, " [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]\n");
- fprintf(f, " [ 6rd-prefix ADDR ] [ 6rd-relay_prefix ADDR ] [ 6rd-reset ]\n");
- fprintf(f, " [ noencap ] [ encap { fou | gue | none } ]\n");
- fprintf(f, " [ encap-sport PORT ] [ encap-dport PORT ]\n");
- fprintf(f, " [ [no]encap-csum ] [ [no]encap-csum6 ] [ [no]encap-remcsum ]\n");
+ const char *type = sit ? "sit " : "ipip";
+
+ fprintf(f,
+ "Usage: ... %s [ remote ADDR ]\n"
+ " [ local ADDR ]\n"
+ " [ ttl TTL ]\n"
+ " [ tos TOS ]\n"
+ " [ [no]pmtudisc ]\n"
+ " [ dev PHYS_DEV ]\n"
+ " [ 6rd-prefix ADDR ]\n"
+ " [ 6rd-relay_prefix ADDR ]\n"
+ " [ 6rd-reset ]\n"
+ " [ noencap ]\n"
+ " [ encap { fou | gue | none } ]\n"
+ " [ encap-sport PORT ]\n"
+ " [ encap-dport PORT ]\n"
+ " [ [no]encap-csum ]\n"
+ " [ [no]encap-csum6 ]\n"
+ " [ [no]encap-remcsum ]\n",
+ type
+ );
if (sit) {
- fprintf(f, " [ mode { ip6ip | ipip | any } ]\n");
+ fprintf(f, " [ mode { ip6ip | ipip | mplsip | any } ]\n");
fprintf(f, " [ isatap ]\n");
+ } else {
+ fprintf(f, " [ mode { ipip | mplsip | any } ]\n");
}
+ fprintf(f, " [ external ]\n");
+ fprintf(f, " [ fwmark MARK ]\n");
fprintf(f, "\n");
- fprintf(f, "Where: NAME := STRING\n");
- fprintf(f, " ADDR := { IP_ADDRESS | any }\n");
+ fprintf(f, "Where: ADDR := { IP_ADDRESS | any }\n");
fprintf(f, " TOS := { NUMBER | inherit }\n");
fprintf(f, " TTL := { 1..255 | inherit }\n");
+ fprintf(f, " MARK := { 0x0..0xffffffff }\n");
}
static void usage(int sit) __attribute__((noreturn));
@@ -53,12 +72,18 @@ static void usage(int sit)
static int iptunnel_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
+ struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
struct {
struct nlmsghdr n;
struct ifinfomsg i;
char buf[2048];
- } req;
- struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
+ } req = {
+ .n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)),
+ .n.nlmsg_flags = NLM_F_REQUEST,
+ .n.nlmsg_type = RTM_GETLINK,
+ .i.ifi_family = preferred_family,
+ .i.ifi_index = ifi->ifi_index,
+ };
struct rtattr *tb[IFLA_MAX + 1];
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
struct rtattr *iptuninfo[IFLA_IPTUN_MAX + 1];
@@ -71,7 +96,7 @@ static int iptunnel_parse_opt(struct link_util *lu, int argc, char **argv,
__u8 pmtudisc = 1;
__u16 iflags = 0;
__u8 proto = 0;
- struct in6_addr ip6rdprefix;
+ struct in6_addr ip6rdprefix = {};
__u16 ip6rdprefixlen = 0;
__u32 ip6rdrelayprefix = 0;
__u16 ip6rdrelayprefixlen = 0;
@@ -79,18 +104,10 @@ static int iptunnel_parse_opt(struct link_util *lu, int argc, char **argv,
__u16 encapflags = 0;
__u16 encapsport = 0;
__u16 encapdport = 0;
-
- memset(&ip6rdprefix, 0, sizeof(ip6rdprefix));
+ __u8 metadata = 0;
+ __u32 fwmark = 0;
if (!(n->nlmsg_flags & NLM_F_CREATE)) {
- memset(&req, 0, sizeof(req));
-
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi));
- req.n.nlmsg_flags = NLM_F_REQUEST;
- req.n.nlmsg_type = RTM_GETLINK;
- req.i.ifi_family = preferred_family;
- req.i.ifi_index = ifi->ifi_index;
-
if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0) {
get_failed:
fprintf(stderr,
@@ -165,6 +182,12 @@ get_failed:
if (iptuninfo[IFLA_IPTUN_6RD_RELAY_PREFIXLEN])
ip6rdrelayprefixlen =
rta_getattr_u16(iptuninfo[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]);
+ if (iptuninfo[IFLA_IPTUN_COLLECT_METADATA])
+ metadata = 1;
+
+ if (iptuninfo[IFLA_IPTUN_FWMARK])
+ fwmark = rta_getattr_u32(iptuninfo[IFLA_IPTUN_FWMARK]);
+
}
while (argc > 0) {
@@ -197,6 +220,7 @@ get_failed:
strcmp(*argv, "tclass") == 0 ||
matches(*argv, "dsfield") == 0) {
__u32 uval;
+
NEXT_ARG();
if (strcmp(*argv, "inherit") != 0) {
if (rtnl_dsfield_a2n(&uval, *argv))
@@ -221,6 +245,24 @@ get_failed:
strcmp(*argv, "ipip") == 0 ||
strcmp(*argv, "ip4ip4") == 0)
proto = IPPROTO_IPIP;
+ else if (strcmp(*argv, "mpls/ipv4") == 0 ||
+ strcmp(*argv, "mplsip") == 0)
+ proto = IPPROTO_MPLS;
+ else if (strcmp(*argv, "any/ipv4") == 0 ||
+ strcmp(*argv, "any") == 0)
+ proto = 0;
+ else
+ invarg("Cannot guess tunnel mode.", *argv);
+ } else if (strcmp(lu->id, "ipip") == 0 &&
+ strcmp(*argv, "mode") == 0) {
+ NEXT_ARG();
+ if (strcmp(*argv, "ipv4/ipv4") == 0 ||
+ strcmp(*argv, "ipip") == 0 ||
+ strcmp(*argv, "ip4ip4") == 0)
+ proto = IPPROTO_IPIP;
+ else if (strcmp(*argv, "mpls/ipv4") == 0 ||
+ strcmp(*argv, "mplsip") == 0)
+ proto = IPPROTO_MPLS;
else if (strcmp(*argv, "any/ipv4") == 0 ||
strcmp(*argv, "any") == 0)
proto = 0;
@@ -260,8 +302,11 @@ get_failed:
encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
} else if (strcmp(*argv, "noencap-remcsum") == 0) {
encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
+ } else if (strcmp(*argv, "external") == 0) {
+ metadata = 1;
} else if (strcmp(*argv, "6rd-prefix") == 0) {
inet_prefix prefix;
+
NEXT_ARG();
if (get_prefix(&prefix, *argv, AF_INET6))
invarg("invalid 6rd_prefix\n", *argv);
@@ -269,6 +314,7 @@ get_failed:
ip6rdprefixlen = prefix.bitlen;
} else if (strcmp(*argv, "6rd-relay_prefix") == 0) {
inet_prefix prefix;
+
NEXT_ARG();
if (get_prefix(&prefix, *argv, AF_INET))
invarg("invalid 6rd-relay_prefix\n", *argv);
@@ -276,11 +322,16 @@ get_failed:
ip6rdrelayprefixlen = prefix.bitlen;
} else if (strcmp(*argv, "6rd-reset") == 0) {
inet_prefix prefix;
+
get_prefix(&prefix, "2002::", AF_INET6);
memcpy(&ip6rdprefix, prefix.data, 16);
ip6rdprefixlen = 16;
ip6rdrelayprefix = 0;
ip6rdrelayprefixlen = 0;
+ } else if (strcmp(*argv, "fwmark") == 0) {
+ NEXT_ARG();
+ if (get_u32(&fwmark, *argv, 0))
+ invarg("invalid fwmark\n", *argv);
} else
usage(strcmp(lu->id, "sit") == 0);
argc--, argv++;
@@ -291,21 +342,29 @@ get_failed:
exit(-1);
}
+ if (metadata) {
+ addattr_l(n, 1024, IFLA_IPTUN_COLLECT_METADATA, NULL, 0);
+ return 0;
+ }
+
addattr32(n, 1024, IFLA_IPTUN_LINK, link);
addattr32(n, 1024, IFLA_IPTUN_LOCAL, laddr);
addattr32(n, 1024, IFLA_IPTUN_REMOTE, raddr);
addattr8(n, 1024, IFLA_IPTUN_TTL, ttl);
addattr8(n, 1024, IFLA_IPTUN_TOS, tos);
addattr8(n, 1024, IFLA_IPTUN_PMTUDISC, pmtudisc);
+ addattr32(n, 1024, IFLA_IPTUN_FWMARK, fwmark);
addattr16(n, 1024, IFLA_IPTUN_ENCAP_TYPE, encaptype);
addattr16(n, 1024, IFLA_IPTUN_ENCAP_FLAGS, encapflags);
addattr16(n, 1024, IFLA_IPTUN_ENCAP_SPORT, htons(encapsport));
addattr16(n, 1024, IFLA_IPTUN_ENCAP_DPORT, htons(encapdport));
+ if (strcmp(lu->id, "ipip") == 0 || strcmp(lu->id, "sit") == 0)
+ addattr8(n, 1024, IFLA_IPTUN_PROTO, proto);
+
if (strcmp(lu->id, "sit") == 0) {
addattr16(n, 1024, IFLA_IPTUN_FLAGS, iflags);
- addattr8(n, 1024, IFLA_IPTUN_PROTO, proto);
if (ip6rdprefixlen) {
addattr_l(n, 1024, IFLA_IPTUN_6RD_PREFIX,
&ip6rdprefix, sizeof(ip6rdprefix));
@@ -327,126 +386,185 @@ static void iptunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[
char s2[64];
const char *local = "any";
const char *remote = "any";
+ __u16 prefixlen, type;
if (!tb)
return;
if (tb[IFLA_IPTUN_REMOTE]) {
- unsigned addr = rta_getattr_u32(tb[IFLA_IPTUN_REMOTE]);
+ unsigned int addr = rta_getattr_u32(tb[IFLA_IPTUN_REMOTE]);
if (addr)
- remote = format_host(AF_INET, 4, &addr, s1, sizeof(s1));
+ remote = format_host(AF_INET, 4, &addr);
}
- fprintf(f, "remote %s ", remote);
+ print_string(PRINT_ANY, "remote", "remote %s ", remote);
if (tb[IFLA_IPTUN_LOCAL]) {
- unsigned addr = rta_getattr_u32(tb[IFLA_IPTUN_LOCAL]);
+ unsigned int addr = rta_getattr_u32(tb[IFLA_IPTUN_LOCAL]);
if (addr)
- local = format_host(AF_INET, 4, &addr, s1, sizeof(s1));
+ local = format_host(AF_INET, 4, &addr);
}
- fprintf(f, "local %s ", local);
+ print_string(PRINT_ANY, "local", "local %s ", local);
if (tb[IFLA_IPTUN_LINK] && rta_getattr_u32(tb[IFLA_IPTUN_LINK])) {
- unsigned link = rta_getattr_u32(tb[IFLA_IPTUN_LINK]);
+ unsigned int link = rta_getattr_u32(tb[IFLA_IPTUN_LINK]);
const char *n = if_indextoname(link, s2);
if (n)
- fprintf(f, "dev %s ", n);
+ print_string(PRINT_ANY, "link", "dev %s ", n);
else
- fprintf(f, "dev %u ", link);
+ print_int(PRINT_ANY, "link_index", "dev %u ", link);
}
- if (tb[IFLA_IPTUN_TTL] && rta_getattr_u8(tb[IFLA_IPTUN_TTL]))
- fprintf(f, "ttl %d ", rta_getattr_u8(tb[IFLA_IPTUN_TTL]));
- else
- fprintf(f, "ttl inherit ");
+ if (tb[IFLA_IPTUN_TTL]) {
+ __u8 ttl = rta_getattr_u8(tb[IFLA_IPTUN_TTL]);
+
+ if (ttl)
+ print_int(PRINT_ANY, "ttl", "ttl %d ", ttl);
+ else
+ print_int(PRINT_JSON, "ttl", NULL, ttl);
+ } else {
+ print_string(PRINT_FP, NULL, "ttl %s ", "inherit");
+ }
- if (tb[IFLA_IPTUN_TOS] && rta_getattr_u8(tb[IFLA_IPTUN_TOS])) {
+ if (tb[IFLA_IPTUN_TOS]) {
int tos = rta_getattr_u8(tb[IFLA_IPTUN_TOS]);
- fputs("tos ", f);
- if (tos == 1)
- fputs("inherit ", f);
- else
- fprintf(f, "0x%x ", tos);
+ if (tos) {
+ if (is_json_context()) {
+ print_0xhex(PRINT_JSON, "tos", "%#x", tos);
+ } else {
+ fputs("tos ", f);
+ if (tos == 1)
+ fputs("inherit ", f);
+ else
+ fprintf(f, "0x%x ", tos);
+ }
+ }
}
if (tb[IFLA_IPTUN_PMTUDISC] && rta_getattr_u8(tb[IFLA_IPTUN_PMTUDISC]))
- fprintf(f, "pmtudisc ");
+ print_bool(PRINT_ANY, "pmtudisc", "pmtudisc ", true);
else
- fprintf(f, "nopmtudisc ");
+ print_bool(PRINT_ANY, "pmtudisc", "nopmtudisc ", false);
if (tb[IFLA_IPTUN_FLAGS]) {
__u16 iflags = rta_getattr_u16(tb[IFLA_IPTUN_FLAGS]);
if (iflags & SIT_ISATAP)
- fprintf(f, "isatap ");
+ print_bool(PRINT_ANY, "isatap", "isatap ", true);
}
if (tb[IFLA_IPTUN_6RD_PREFIXLEN] &&
- *(__u16 *)RTA_DATA(tb[IFLA_IPTUN_6RD_PREFIXLEN])) {
- __u16 prefixlen = rta_getattr_u16(tb[IFLA_IPTUN_6RD_PREFIXLEN]);
+ (prefixlen = rta_getattr_u16(tb[IFLA_IPTUN_6RD_PREFIXLEN]))) {
__u16 relayprefixlen =
rta_getattr_u16(tb[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]);
__u32 relayprefix =
rta_getattr_u32(tb[IFLA_IPTUN_6RD_RELAY_PREFIX]);
- printf("6rd-prefix %s/%u ",
- inet_ntop(AF_INET6, RTA_DATA(tb[IFLA_IPTUN_6RD_PREFIX]),
- s1, sizeof(s1)),
- prefixlen);
- if (relayprefix) {
- printf("6rd-relay_prefix %s/%u ",
- format_host(AF_INET, 4, &relayprefix, s1,
- sizeof(s1)),
- relayprefixlen);
+ const char *prefix = inet_ntop(AF_INET6,
+ RTA_DATA(tb[IFLA_IPTUN_6RD_PREFIX]),
+ s1, sizeof(s1));
+
+ if (is_json_context()) {
+ print_string(PRINT_JSON, "prefix", NULL, prefix);
+ print_int(PRINT_JSON, "prefixlen", NULL, prefixlen);
+ if (relayprefix) {
+ print_string(PRINT_JSON,
+ "relay_prefix",
+ NULL,
+ format_host(AF_INET,
+ 4,
+ &relayprefix));
+ print_int(PRINT_JSON,
+ "relay_prefixlen",
+ NULL,
+ relayprefixlen);
+ }
+ } else {
+ printf("6rd-prefix %s/%u ", prefix, prefixlen);
+ if (relayprefix) {
+ printf("6rd-relay_prefix %s/%u ",
+ format_host(AF_INET, 4, &relayprefix),
+ relayprefixlen);
+ }
}
}
if (tb[IFLA_IPTUN_ENCAP_TYPE] &&
- *(__u16 *)RTA_DATA(tb[IFLA_IPTUN_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
- __u16 type = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_TYPE]);
+ (type = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_TYPE])) != TUNNEL_ENCAP_NONE) {
__u16 flags = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_FLAGS]);
__u16 sport = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_SPORT]);
__u16 dport = rta_getattr_u16(tb[IFLA_IPTUN_ENCAP_DPORT]);
- fputs("encap ", f);
+ print_string(PRINT_FP, NULL, "encap ", NULL);
switch (type) {
case TUNNEL_ENCAP_FOU:
- fputs("fou ", f);
+ print_string(PRINT_ANY, "type", "%s ", "fou");
break;
case TUNNEL_ENCAP_GUE:
- fputs("gue ", f);
+ print_string(PRINT_ANY, "type", "%s ", "gue");
break;
default:
- fputs("unknown ", f);
+ print_null(PRINT_ANY, "type", "unknown ", NULL);
break;
}
- if (sport == 0)
- fputs("encap-sport auto ", f);
- else
- fprintf(f, "encap-sport %u", ntohs(sport));
+ if (is_json_context()) {
+ print_uint(PRINT_JSON,
+ "sport",
+ NULL,
+ sport ? ntohs(sport) : 0);
+ print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
+ print_bool(PRINT_JSON,
+ "csum",
+ NULL,
+ flags & TUNNEL_ENCAP_FLAG_CSUM);
+ print_bool(PRINT_JSON,
+ "csum6",
+ NULL,
+ flags & TUNNEL_ENCAP_FLAG_CSUM6);
+ print_bool(PRINT_JSON,
+ "remcsum",
+ NULL,
+ flags & TUNNEL_ENCAP_FLAG_REMCSUM);
+ close_json_object();
+ } else {
+ if (sport == 0)
+ fputs("encap-sport auto ", f);
+ else
+ fprintf(f, "encap-sport %u", ntohs(sport));
- fprintf(f, "encap-dport %u ", ntohs(dport));
+ fprintf(f, "encap-dport %u ", ntohs(dport));
- if (flags & TUNNEL_ENCAP_FLAG_CSUM)
- fputs("encap-csum ", f);
- else
- fputs("noencap-csum ", f);
+ if (flags & TUNNEL_ENCAP_FLAG_CSUM)
+ fputs("encap-csum ", f);
+ else
+ fputs("noencap-csum ", f);
- if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
- fputs("encap-csum6 ", f);
- else
- fputs("noencap-csum6 ", f);
+ if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
+ fputs("encap-csum6 ", f);
+ else
+ fputs("noencap-csum6 ", f);
- if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
- fputs("encap-remcsum ", f);
- else
- fputs("noencap-remcsum ", f);
+ if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
+ fputs("encap-remcsum ", f);
+ else
+ fputs("noencap-remcsum ", f);
+ }
+ }
+
+ if (tb[IFLA_IPTUN_FWMARK]) {
+ __u32 fwmark = rta_getattr_u32(tb[IFLA_IPTUN_FWMARK]);
+
+ if (fwmark) {
+ snprintf(s2, sizeof(s2), "0x%x", fwmark);
+
+ print_string(PRINT_ANY, "fwmark", "fwmark %s ", s2);
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-12 15:34:07 +0000