exit(-1);
}
-static void print_tunnel(struct ip6_tnl_parm2 *p)
+static void print_tunnel(const void *t)
{
+ const struct ip6_tnl_parm2 *p = t;
char s1[1024];
char s2[1024];
else
printf(" encaplimit %u", p->encap_limit);
- printf(" hoplimit %u", p->hop_limit);
+ if (p->hop_limit)
+ printf(" hoplimit %u", p->hop_limit);
+ else
+ printf(" hoplimit inherit");
if (p->flags & IP6_TNL_F_USE_ORIG_TCLASS)
printf(" tclass inherit");
inet_prefix raddr;
NEXT_ARG();
- get_prefix(&raddr, *argv, preferred_family);
- if (raddr.family == AF_UNSPEC)
- invarg("\"remote\" address family is AF_UNSPEC", *argv);
+ get_addr(&raddr, *argv, AF_INET6);
memcpy(&p->raddr, &raddr.data, sizeof(p->raddr));
} else if (strcmp(*argv, "local") == 0) {
inet_prefix laddr;
NEXT_ARG();
- get_prefix(&laddr, *argv, preferred_family);
- if (laddr.family == AF_UNSPEC)
- invarg("\"local\" address family is AF_UNSPEC", *argv);
+ get_addr(&laddr, *argv, AF_INET6);
memcpy(&p->laddr, &laddr.data, sizeof(p->laddr));
} else if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
}
if (medium) {
p->link = ll_name_to_index(medium);
- if (p->link == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", medium);
- return -1;
- }
+ if (!p->link)
+ return nodev(medium);
}
return 0;
}
}
}
-/*
- * @p1: user specified parameter
- * @p2: database entry
- */
-static int ip6_tnl_parm_match(const struct ip6_tnl_parm2 *p1,
- const struct ip6_tnl_parm2 *p2)
+static void ip6_tnl_parm_initialize(const struct tnl_print_nlmsg_info *info)
+{
+ const struct ifinfomsg *ifi = info->ifi;
+ const struct ip6_tnl_parm2 *p1 = info->p1;
+ struct ip6_tnl_parm2 *p2 = info->p2;
+
+ ip6_tnl_parm_init(p2, 0);
+ if (ifi->ifi_type == ARPHRD_IP6GRE)
+ p2->proto = IPPROTO_GRE;
+ p2->link = ifi->ifi_index;
+ strcpy(p2->name, p1->name);
+}
+
+static bool ip6_tnl_parm_match(const struct tnl_print_nlmsg_info *info)
{
+ const struct ip6_tnl_parm2 *p1 = info->p1;
+ const struct ip6_tnl_parm2 *p2 = info->p2;
+
return ((!p1->link || p1->link == p2->link) &&
(!p1->name[0] || strcmp(p1->name, p2->name) == 0) &&
(IN6_IS_ADDR_UNSPECIFIED(&p1->laddr) ||
(!p1->flags || (p1->flags & p2->flags)));
}
-static int do_tunnels_list(struct ip6_tnl_parm2 *p)
-{
- char buf[512];
- int err = -1;
- FILE *fp = fopen("/proc/net/dev", "r");
-
- if (fp == NULL) {
- perror("fopen");
- return -1;
- }
-
- /* skip two lines at the begenning of the file */
- if (!fgets(buf, sizeof(buf), fp) ||
- !fgets(buf, sizeof(buf), fp)) {
- fprintf(stderr, "/proc/net/dev read error\n");
- goto end;
- }
-
- while (fgets(buf, sizeof(buf), fp) != NULL) {
- char name[IFNAMSIZ];
- int index, type;
- struct ip6_tnl_parm2 p1 = {};
- char *ptr;
-
- buf[sizeof(buf) - 1] = '\0';
- if ((ptr = strchr(buf, ':')) == NULL ||
- (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) {
- fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n");
- goto end;
- }
- if (p->name[0] && strcmp(p->name, name))
- continue;
- index = ll_name_to_index(name);
- if (index == 0)
- continue;
- type = ll_index_to_type(index);
- if (type == -1) {
- fprintf(stderr, "Failed to get type of \"%s\"\n", name);
- continue;
- }
- if (type != ARPHRD_TUNNEL6 && type != ARPHRD_IP6GRE)
- continue;
- ip6_tnl_parm_init(&p1, 0);
- if (type == ARPHRD_IP6GRE)
- p1.proto = IPPROTO_GRE;
- strcpy(p1.name, name);
- p1.link = ll_name_to_index(p1.name);
- if (p1.link == 0)
- continue;
- if (tnl_get_ioctl(p1.name, &p1))
- continue;
- if (!ip6_tnl_parm_match(p, &p1))
- continue;
- print_tunnel(&p1);
- if (show_stats)
- tnl_print_stats(ptr);
- printf("\n");
- }
- err = 0;
- end:
- fclose(fp);
- return err;
-}
-
static int do_show(int argc, char **argv)
{
- struct ip6_tnl_parm2 p;
+ struct ip6_tnl_parm2 p, p1;
- ll_init_map(&rth);
ip6_tnl_parm_init(&p, 0);
p.proto = 0; /* default to any */
if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0)
return -1;
- if (!p.name[0] || show_stats)
- do_tunnels_list(&p);
- else {
- if (tnl_get_ioctl(p.name, &p))
- return -1;
- print_tunnel(&p);
- printf("\n");
+ if (!p.name[0] || show_stats) {
+ struct tnl_print_nlmsg_info info = {
+ .p1 = &p,
+ .p2 = &p1,
+ .init = ip6_tnl_parm_initialize,
+ .match = ip6_tnl_parm_match,
+ .print = print_tunnel,
+ };
+
+ return do_tunnels_list(&info);
}
+ if (tnl_get_ioctl(p.name, &p))
+ return -1;
+
+ print_tunnel(&p);
+ fputc('\n', stdout);
return 0;
}