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SubjectRe: [PATCH 03/03][IPROUTE2] EtherIP tunnel and device support for iproute2
This patch adds support for EtherIP tunnels and devices to the iproute2
userspace software package.

Signed-off-by: Joerg Roedel <joro-lkml@zlug.org>
diff -urp iproute2-2.6.16-060323.orig/ip/iptunnel.c iproute2-2.6.16-060323/ip/iptunnel.c
--- iproute2-2.6.16-060323.orig/ip/iptunnel.c 2005-02-10 19:31:18.000000000 +0100
+++ iproute2-2.6.16-060323/ip/iptunnel.c 2006-09-20 22:35:30.000000000 +0200
@@ -44,7 +44,7 @@ static void usage(void) __attribute__((n
static void usage(void)
{
fprintf(stderr, "Usage: ip tunnel { add | change | del | show } [ NAME ]\n");
- fprintf(stderr, " [ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ]\n");
+ fprintf(stderr, " [ mode { ipip | gre | sit | etherip } ] [ remote ADDR ] [ local ADDR ]\n");
fprintf(stderr, " [ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]\n");
fprintf(stderr, " [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]\n");
fprintf(stderr, "\n");
@@ -202,6 +202,12 @@ static int parse_args(int argc, char **a
exit(-1);
}
p->iph.protocol = IPPROTO_IPV6;
+ } else if (strcmp(*argv, "etherip") == 0) {
+ if (p->iph.protocol && p->iph.protocol != IPPROTO_ETHERIP) {
+ fprintf(stderr,"You managed to ask for more than one tunnel mode.\n");
+ exit(-1);
+ }
+ p->iph.protocol = IPPROTO_ETHERIP;
} else {
fprintf(stderr,"Cannot guess tunnel mode.\n");
exit(-1);
@@ -324,11 +330,15 @@ static int parse_args(int argc, char **a
p->iph.protocol = IPPROTO_IPIP;
else if (memcmp(p->name, "sit", 3) == 0)
p->iph.protocol = IPPROTO_IPV6;
+ else if (memcmp(p->name, "ethip", 5) == 0)
+ p->iph.protocol = IPPROTO_ETHERIP;
}

- if (p->iph.protocol == IPPROTO_IPIP || p->iph.protocol == IPPROTO_IPV6) {
+ if (p->iph.protocol == IPPROTO_IPIP ||
+ p->iph.protocol == IPPROTO_IPV6 ||
+ p->iph.protocol == IPPROTO_ETHERIP) {
if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) {
- fprintf(stderr, "Keys are not allowed with ipip and sit.\n");
+ fprintf(stderr, "Keys are not allowed with ipip, sit or etherip.\n");
return -1;
}
}
@@ -351,6 +361,21 @@ static int parse_args(int argc, char **a
fprintf(stderr, "Broadcast tunnel requires a source address.\n");
return -1;
}
+
+ if (p->iph.protocol == IPPROTO_ETHERIP) {
+ if ((cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) && !p->iph.daddr) {
+ fprintf(stderr, "EtherIP tunnel requires a "
+ "destination address.\n");
+ return -1;
+ }
+
+ /*
+ if (cmd != SIOCDELTUNNEL && p->iph.frag_off & htons(IP_DF)) {
+ fprintf(stderr, "Warning: [no]pmtudisc is ignored on"
+ " EtherIP tunnels\n");
+ }
+ */
+ }
return 0;
}

@@ -374,6 +399,8 @@ static int do_add(int cmd, int argc, cha
return do_add_ioctl(cmd, "gre0", &p);
case IPPROTO_IPV6:
return do_add_ioctl(cmd, "sit0", &p);
+ case IPPROTO_ETHERIP:
+ return do_add_ioctl(cmd, "ethip0", &p);
default:
fprintf(stderr, "cannot determine tunnel mode (ipip, gre or sit)\n");
return -1;
@@ -395,6 +422,8 @@ int do_del(int argc, char **argv)
return do_del_ioctl("gre0", &p);
case IPPROTO_IPV6:
return do_del_ioctl("sit0", &p);
+ case IPPROTO_ETHERIP:
+ return do_del_ioctl("ethip0", &p);
default:
return do_del_ioctl(p.name, &p);
}
@@ -418,7 +447,8 @@ void print_tunnel(struct ip_tunnel_parm
p->name,
p->iph.protocol == IPPROTO_IPIP ? "ip" :
(p->iph.protocol == IPPROTO_GRE ? "gre" :
- (p->iph.protocol == IPPROTO_IPV6 ? "ipv6" : "unknown")),
+ (p->iph.protocol == IPPROTO_ETHERIP ? "etherip" :
+ (p->iph.protocol == IPPROTO_IPV6 ? "ipv6" : "unknown"))),
p->iph.daddr ? format_host(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any",
p->iph.saddr ? rt_addr_n2a(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any");

@@ -431,19 +461,19 @@ void print_tunnel(struct ip_tunnel_parm
if (p->iph.ttl)
printf(" ttl %d ", p->iph.ttl);
else
- printf(" ttl inherit ");
+ printf(" ttl %s", p->iph.protocol != IPPROTO_ETHERIP ? "inherit " : "default");

if (p->iph.tos) {
SPRINT_BUF(b1);
printf(" tos");
if (p->iph.tos&1)
- printf(" inherit");
+ printf(" %s", p->iph.protocol != IPPROTO_ETHERIP ? "inherit" : "default");
if (p->iph.tos&~1)
printf("%c%s ", p->iph.tos&1 ? '/' : ' ',
rtnl_dsfield_n2a(p->iph.tos&~1, b1, sizeof(b1)));
}

- if (!(p->iph.frag_off&htons(IP_DF)))
+ if (p->iph.protocol != IPPROTO_ETHERIP && !(p->iph.frag_off&htons(IP_DF)))
printf(" nopmtudisc");

if ((p->i_flags&GRE_KEY) && (p->o_flags&GRE_KEY) && p->o_key == p->i_key)
@@ -506,8 +536,13 @@ static int do_tunnels_list(struct ip_tun
fprintf(stderr, "Failed to get type of [%s]\n", name);
continue;
}
- if (type != ARPHRD_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT)
+
+ if (type != ARPHRD_TUNNEL &&
+ type != ARPHRD_IPGRE &&
+ type != ARPHRD_SIT &&
+ type != ARPHRD_ETHERIP)
continue;
+
memset(&p1, 0, sizeof(p1));
if (do_get_ioctl(name, &p1))
continue;
diff -urp iproute2-2.6.16-060323.orig/lib/ll_types.c iproute2-2.6.16-060323/lib/ll_types.c
--- iproute2-2.6.16-060323.orig/lib/ll_types.c 2005-02-09 23:07:24.000000000 +0100
+++ iproute2-2.6.16-060323/lib/ll_types.c 2006-09-23 13:19:16.000000000 +0200
@@ -118,6 +118,9 @@ __PF(IEEE802_TR,tr)
#ifdef ARPHRD_IEEE80211
__PF(IEEE80211,ieee802.11)
#endif
+#ifdef ARPHRD_ETHERIP
+__PF(ETHERIP, etherip)
+#endif
#ifdef ARPHRD_VOID
__PF(VOID,void)
#endif
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