@@ -30,7 +30,7 @@
#define IPPROTO_MPLS 137 /* RFC 4023 */
#endif
-static void print_usage(FILE *f, int sit)
+static void print_usage(FILE *f, const char *id)
{
fprintf(f, "Usage: ip link { add | set | change | replace | del } NAME\n");
fprintf(f, " type { ipip | sit } [ remote ADDR ] [ local ADDR ]\n");
@@ -39,9 +39,11 @@ static void print_usage(FILE *f, int sit)
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");
- if (sit) {
+ if (strcmp(id, "sit") == 0) {
fprintf(f, " [ mode { ip6ip | ipip | mplsip | any } ]\n");
fprintf(f, " [ isatap ]\n");
+ } else if (strcmp(id, "ipip") == 0) {
+ fprintf(f, " [ mode { ipip | mplsip | any } ]\n");
}
fprintf(f, "\n");
fprintf(f, "Where: NAME := STRING\n");
@@ -50,10 +52,10 @@ static void print_usage(FILE *f, int sit)
fprintf(f, " TTL := { 1..255 | inherit }\n");
}
-static void usage(int sit) __attribute__((noreturn));
-static void usage(int sit)
+static void usage(const char *id) __attribute__((noreturn));
+static void usage(const char *id)
{
- print_usage(stderr, sit);
+ print_usage(stderr, id);
exit(-1);
}
@@ -237,6 +239,21 @@ get_failed:
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;
+ else
+ invarg("Cannot guess tunnel mode.", *argv);
} else if (strcmp(*argv, "noencap") == 0) {
encaptype = TUNNEL_ENCAP_NONE;
} else if (strcmp(*argv, "encap") == 0) {
@@ -296,7 +313,7 @@ get_failed:
ip6rdrelayprefix = 0;
ip6rdrelayprefixlen = 0;
} else
- usage(strcmp(lu->id, "sit") == 0);
+ usage(lu->id);
argc--, argv++;
}
@@ -317,9 +334,11 @@ get_failed:
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));
@@ -466,7 +485,7 @@ static void iptunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[
static void iptunnel_print_help(struct link_util *lu, int argc, char **argv,
FILE *f)
{
- print_usage(f, strcmp(lu->id, "sit") == 0);
+ print_usage(f, lu->id);
}
struct link_util ipip_link_util = {
@@ -647,8 +647,9 @@ applicable for Generic UDP Encapsulation.
.BI mode " { ip6ip | ipip | mplsip | any } "
- specifies mode in which device should run. "ip6ip" indicates
IPv6-Over-IPv4, "ipip" indicates "IPv4-Over-IPv4", "mplsip" indicates
-MPLS-Over-IPv4, "any" indicates IPv6, IPv4 or MPLS Over IPv4. Only
-supported for SIT where the default is "ip6ip".
+MPLS-Over-IPv4, "any" indicates IPv6, IPv4 or MPLS Over IPv4. Supported for
+SIT where the default is "ip6ip" and IPIP where the default is "ipip".
+IPv6-Over-IPv4 is not supported for IPIP.
.in -8
Signed-off-by: Simon Horman <simon.horman@netronome.com> --- ip/link_iptnl.c | 35 +++++++++++++++++++++++++++-------- man/man8/ip-link.8.in | 5 +++-- 2 files changed, 30 insertions(+), 10 deletions(-)