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ip: allow to specify mode for sit tunnels 

It's now possible to have IPv4 and IPv6 over IPv4 tunnels with the module sit.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
This commit is contained in:
Nicolas Dichtel 2013-07-16 22:54:14 +02:00 committed by Stephen Hemminger
parent 973eb50b18
commit 77620be89a
1 changed files with 23 additions and 1 deletions
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24
ip/link_iptnl.c
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@ -30,8 +30,10 @@ static void usage(int sit)
fprintf(stderr, " type { ipip | sit } [ remote ADDR ] [ local ADDR ]\n");
fprintf(stderr, " [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]\n");
fprintf(stderr, " [ 6rd-prefix ADDR ] [ 6rd-relay_prefix ADDR ] [ 6rd-reset ]\n");
if (sit)
if (sit) {
fprintf(stderr, " [ mode { ip6ip | ipip | any } ]\n");
fprintf(stderr, " [ isatap ]\n");
}
fprintf(stderr, "\n");
fprintf(stderr, "Where: NAME := STRING\n");
fprintf(stderr, " ADDR := { IP_ADDRESS | any }\n");
@ -60,6 +62,7 @@ static int iptunnel_parse_opt(struct link_util *lu, int argc, char **argv,
__u8 tos = 0;
__u8 pmtudisc = 1;
__u16 iflags = 0;
__u8 proto = 0;
struct in6_addr ip6rdprefix;
__u16 ip6rdprefixlen = 0;
__u32 ip6rdrelayprefix = 0;
@ -123,6 +126,9 @@ get_failed:
if (iptuninfo[IFLA_IPTUN_LINK])
link = rta_getattr_u32(iptuninfo[IFLA_IPTUN_LINK]);
if (iptuninfo[IFLA_IPTUN_PROTO])
proto = rta_getattr_u8(iptuninfo[IFLA_IPTUN_PROTO]);
if (iptuninfo[IFLA_IPTUN_6RD_PREFIX])
memcpy(&ip6rdprefix,
RTA_DATA(iptuninfo[IFLA_IPTUN_6RD_PREFIX]),
@ -185,6 +191,21 @@ get_failed:
} else if (strcmp(lu->id, "sit") == 0 &&
strcmp(*argv, "isatap") == 0) {
iflags |= SIT_ISATAP;
} else if (strcmp(lu->id, "sit") == 0 &&
strcmp(*argv, "mode") == 0) {
NEXT_ARG();
if (strcmp(*argv, "ipv6/ipv4") == 0 ||
strcmp(*argv, "ip6ip") == 0)
proto = IPPROTO_IPV6;
else if (strcmp(*argv, "ipv4/ipv4") == 0 ||
strcmp(*argv, "ipip") == 0 ||
strcmp(*argv, "ip4ip4") == 0)
proto = IPPROTO_IPIP;
else if (strcmp(*argv, "any/ipv4") == 0 ||
strcmp(*argv, "any") == 0)
proto = 0;
else
invarg("Cannot guess tunnel mode.", *argv);
} else if (strcmp(*argv, "6rd-prefix") == 0) {
inet_prefix prefix;
NEXT_ARG();
@ -224,6 +245,7 @@ get_failed:
addattr8(n, 1024, IFLA_IPTUN_PMTUDISC, pmtudisc);
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));