p->iph.frag_off = htons(IP_DF);
} else if (strcmp(*argv, "remote") == 0) {
NEXT_ARG();
- if (strcmp(*argv, "any"))
- p->iph.daddr = get_addr32(*argv);
- else
- p->iph.daddr = htonl(INADDR_ANY);
+ p->iph.daddr = get_addr32(*argv);
} else if (strcmp(*argv, "local") == 0) {
NEXT_ARG();
- if (strcmp(*argv, "any"))
- p->iph.saddr = get_addr32(*argv);
- else
- p->iph.saddr = htonl(INADDR_ANY);
+ p->iph.saddr = get_addr32(*argv);
} else if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
medium = *argv;
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);
}
if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) {
return tnl_del_ioctl(tnl_defname(&p) ? : p.name, p.name, &p);
}
-static void print_tunnel(struct ip_tunnel_parm *p)
+static void print_tunnel(const void *t)
{
+ const struct ip_tunnel_parm *p = t;
struct ip_tunnel_6rd ip6rd = {};
char s1[1024];
char s2[1024];
}
if (p->iph.ttl)
- printf(" ttl %d", p->iph.ttl);
+ printf(" ttl %u", p->iph.ttl);
else
printf(" ttl inherit");
printf("%s Checksum output packets.", _SL_);
}
-static int do_tunnels_list(struct ip_tunnel_parm *p)
-{
- char buf[512];
- int err = -1;
- FILE *fp = fopen("/proc/net/dev", "r");
- if (fp == NULL) {
- perror("fopen");
- return -1;
- }
+static void ip_tunnel_parm_initialize(const struct tnl_print_nlmsg_info *info)
+{
+ struct ip_tunnel_parm *p2 = info->p2;
- /* skip header lines */
- if (!fgets(buf, sizeof(buf), fp) ||
- !fgets(buf, sizeof(buf), fp)) {
- fprintf(stderr, "/proc/net/dev read error\n");
- goto end;
- }
+ memset(p2, 0, sizeof(*p2));
+}
- while (fgets(buf, sizeof(buf), fp) != NULL) {
- char name[IFNAMSIZ];
- int index, type;
- struct ip_tunnel_parm p1 = {};
- char *ptr;
-
- buf[sizeof(buf) - 1] = 0;
- ptr = strchr(buf, ':');
- if (ptr == 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_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT)
- continue;
- if (tnl_get_ioctl(name, &p1))
- continue;
- if ((p->link && p1.link != p->link) ||
- (p->name[0] && strcmp(p1.name, p->name)) ||
- (p->iph.daddr && p1.iph.daddr != p->iph.daddr) ||
- (p->iph.saddr && p1.iph.saddr != p->iph.saddr) ||
- (p->i_key && p1.i_key != p->i_key))
- continue;
- print_tunnel(&p1);
- if (show_stats)
- tnl_print_stats(ptr);
- printf("\n");
- }
- err = 0;
- end:
- fclose(fp);
- return err;
+static bool ip_tunnel_parm_match(const struct tnl_print_nlmsg_info *info)
+{
+ const struct ip_tunnel_parm *p1 = info->p1;
+ const struct ip_tunnel_parm *p2 = info->p2;
+
+ return ((!p1->link || p1->link == p2->link) &&
+ (!p1->name[0] || strcmp(p1->name, p2->name) == 0) &&
+ (!p1->iph.daddr || p1->iph.daddr == p2->iph.daddr) &&
+ (!p1->iph.saddr || p1->iph.saddr == p2->iph.saddr) &&
+ (!p1->i_key || p1->i_key == p2->i_key));
}
static int do_show(int argc, char **argv)
{
- struct ip_tunnel_parm p;
+ struct ip_tunnel_parm p, p1;
const char *basedev;
- ll_init_map(&rth);
if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0)
return -1;
basedev = tnl_defname(&p);
- if (!basedev)
- return do_tunnels_list(&p);
+ if (!basedev) {
+ struct tnl_print_nlmsg_info info = {
+ .p1 = &p,
+ .p2 = &p1,
+ .init = ip_tunnel_parm_initialize,
+ .match = ip_tunnel_parm_match,
+ .print = print_tunnel,
+ };
+
+ return do_tunnels_list(&info);
+ }
if (tnl_get_ioctl(p.name[0] ? p.name : basedev, &p))
return -1;
print_tunnel(&p);
- printf("\n");
+ fputc('\n', stdout);
return 0;
}