iproute2: GRE over IPv6 tunnel support.
GRE over IPv6 tunnel support.
Signed-off-by: Dmitry Kozlov <xeb@mail.ru>
diff --git a/ip/ip6tunnel.c b/ip/ip6tunnel.c
index 216e982..463be42 100644
--- a/ip/ip6tunnel.c
+++ b/ip/ip6tunnel.c
@@ -48,11 +48,12 @@
static void usage(void)
{
fprintf(stderr, "Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]\n");
- fprintf(stderr, " [ mode { ip6ip6 | ipip6 | any } ]\n");
+ fprintf(stderr, " [ mode { ip6ip6 | ipip6 | ip6gre | any } ]\n");
fprintf(stderr, " [ remote ADDR local ADDR ] [ dev PHYS_DEV ]\n");
fprintf(stderr, " [ encaplimit ELIM ]\n");
fprintf(stderr ," [ hoplimit TTL ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n");
fprintf(stderr, " [ dscp inherit ]\n");
+ fprintf(stderr, " [ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]\n");
fprintf(stderr, "\n");
fprintf(stderr, "Where: NAME := STRING\n");
fprintf(stderr, " ADDR := IPV6_ADDRESS\n");
@@ -62,10 +63,11 @@
DEFAULT_TNL_HOP_LIMIT);
fprintf(stderr, " TCLASS := { 0x0..0xff | inherit }\n");
fprintf(stderr, " FLOWLABEL := { 0x0..0xfffff | inherit }\n");
+ fprintf(stderr, " KEY := { DOTTED_QUAD | NUMBER }\n");
exit(-1);
}
-static void print_tunnel(struct ip6_tnl_parm *p)
+static void print_tunnel(struct ip6_tnl_parm2 *p)
{
char remote[64];
char local[64];
@@ -104,9 +106,29 @@
if (p->flags & IP6_TNL_F_RCV_DSCP_COPY)
printf(" dscp inherit");
+
+ if (p->proto == IPPROTO_GRE) {
+ if ((p->i_flags&GRE_KEY) && (p->o_flags&GRE_KEY) && p->o_key == p->i_key)
+ printf(" key %u", ntohl(p->i_key));
+ else if ((p->i_flags|p->o_flags)&GRE_KEY) {
+ if (p->i_flags&GRE_KEY)
+ printf(" ikey %u ", ntohl(p->i_key));
+ if (p->o_flags&GRE_KEY)
+ printf(" okey %u ", ntohl(p->o_key));
+ }
+
+ if (p->i_flags&GRE_SEQ)
+ printf("%s Drop packets out of sequence.\n", _SL_);
+ if (p->i_flags&GRE_CSUM)
+ printf("%s Checksum in received packet is required.", _SL_);
+ if (p->o_flags&GRE_SEQ)
+ printf("%s Sequence packets on output.", _SL_);
+ if (p->o_flags&GRE_CSUM)
+ printf("%s Checksum output packets.", _SL_);
+ }
}
-static int parse_args(int argc, char **argv, int cmd, struct ip6_tnl_parm *p)
+static int parse_args(int argc, char **argv, int cmd, struct ip6_tnl_parm2 *p)
{
int count = 0;
char medium[IFNAMSIZ];
@@ -124,6 +146,9 @@
strcmp(*argv, "ipip6") == 0 ||
strcmp(*argv, "ip4ip6") == 0)
p->proto = IPPROTO_IPIP;
+ else if (strcmp(*argv, "ip6gre") == 0 ||
+ strcmp(*argv, "gre/ipv6") == 0)
+ p->proto = IPPROTO_GRE;
else if (strcmp(*argv, "any/ipv6") == 0 ||
strcmp(*argv, "any") == 0)
p->proto = 0;
@@ -202,6 +227,60 @@
if (strcmp(*argv, "inherit") != 0)
invarg("not inherit", *argv);
p->flags |= IP6_TNL_F_RCV_DSCP_COPY;
+ } else if (strcmp(*argv, "key") == 0) {
+ unsigned uval;
+ NEXT_ARG();
+ p->i_flags |= GRE_KEY;
+ p->o_flags |= GRE_KEY;
+ if (strchr(*argv, '.'))
+ p->i_key = p->o_key = get_addr32(*argv);
+ else {
+ if (get_unsigned(&uval, *argv, 0)<0) {
+ fprintf(stderr, "invalid value of \"key\"\n");
+ exit(-1);
+ }
+ p->i_key = p->o_key = htonl(uval);
+ }
+ } else if (strcmp(*argv, "ikey") == 0) {
+ unsigned uval;
+ NEXT_ARG();
+ p->i_flags |= GRE_KEY;
+ if (strchr(*argv, '.'))
+ p->i_key = get_addr32(*argv);
+ else {
+ if (get_unsigned(&uval, *argv, 0)<0) {
+ fprintf(stderr, "invalid value of \"ikey\"\n");
+ exit(-1);
+ }
+ p->i_key = htonl(uval);
+ }
+ } else if (strcmp(*argv, "okey") == 0) {
+ unsigned uval;
+ NEXT_ARG();
+ p->o_flags |= GRE_KEY;
+ if (strchr(*argv, '.'))
+ p->o_key = get_addr32(*argv);
+ else {
+ if (get_unsigned(&uval, *argv, 0)<0) {
+ fprintf(stderr, "invalid value of \"okey\"\n");
+ exit(-1);
+ }
+ p->o_key = htonl(uval);
+ }
+ } else if (strcmp(*argv, "seq") == 0) {
+ p->i_flags |= GRE_SEQ;
+ p->o_flags |= GRE_SEQ;
+ } else if (strcmp(*argv, "iseq") == 0) {
+ p->i_flags |= GRE_SEQ;
+ } else if (strcmp(*argv, "oseq") == 0) {
+ p->o_flags |= GRE_SEQ;
+ } else if (strcmp(*argv, "csum") == 0) {
+ p->i_flags |= GRE_CSUM;
+ p->o_flags |= GRE_CSUM;
+ } else if (strcmp(*argv, "icsum") == 0) {
+ p->i_flags |= GRE_CSUM;
+ } else if (strcmp(*argv, "ocsum") == 0) {
+ p->o_flags |= GRE_CSUM;
} else {
if (strcmp(*argv, "name") == 0) {
NEXT_ARG();
@@ -212,7 +291,7 @@
duparg2("name", *argv);
strncpy(p->name, *argv, IFNAMSIZ - 1);
if (cmd == SIOCCHGTUNNEL && count == 0) {
- struct ip6_tnl_parm old_p;
+ struct ip6_tnl_parm2 old_p;
memset(&old_p, 0, sizeof(old_p));
if (tnl_get_ioctl(*argv, &old_p))
return -1;
@@ -230,7 +309,7 @@
return 0;
}
-static void ip6_tnl_parm_init(struct ip6_tnl_parm *p, int apply_default)
+static void ip6_tnl_parm_init(struct ip6_tnl_parm2 *p, int apply_default)
{
memset(p, 0, sizeof(*p));
p->proto = IPPROTO_IPV6;
@@ -244,8 +323,8 @@
* @p1: user specified parameter
* @p2: database entry
*/
-static int ip6_tnl_parm_match(const struct ip6_tnl_parm *p1,
- const struct ip6_tnl_parm *p2)
+static int ip6_tnl_parm_match(const struct ip6_tnl_parm2 *p1,
+ const struct ip6_tnl_parm2 *p2)
{
return ((!p1->link || p1->link == p2->link) &&
(!p1->name[0] || strcmp(p1->name, p2->name) == 0) &&
@@ -263,7 +342,7 @@
(!p1->flags || (p1->flags & p2->flags)));
}
-static int do_tunnels_list(struct ip6_tnl_parm *p)
+static int do_tunnels_list(struct ip6_tnl_parm2 *p)
{
char buf[512];
int err = -1;
@@ -287,7 +366,7 @@
rx_fifo, rx_frame,
tx_bytes, tx_packets, tx_errs, tx_drops,
tx_fifo, tx_colls, tx_carrier, rx_multi;
- struct ip6_tnl_parm p1;
+ struct ip6_tnl_parm2 p1;
char *ptr;
buf[sizeof(buf) - 1] = '\0';
@@ -312,10 +391,12 @@
fprintf(stderr, "Failed to get type of \"%s\"\n", name);
continue;
}
- if (type != ARPHRD_TUNNEL6)
+ if (type != ARPHRD_TUNNEL6 && type != ARPHRD_IP6GRE)
continue;
memset(&p1, 0, sizeof(p1));
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)
@@ -346,7 +427,7 @@
static int do_show(int argc, char **argv)
{
- struct ip6_tnl_parm p;
+ struct ip6_tnl_parm2 p;
ll_init_map(&rth);
ip6_tnl_parm_init(&p, 0);
@@ -369,28 +450,44 @@
static int do_add(int cmd, int argc, char **argv)
{
- struct ip6_tnl_parm p;
+ struct ip6_tnl_parm2 p;
ip6_tnl_parm_init(&p, 1);
if (parse_args(argc, argv, cmd, &p) < 0)
return -1;
- return tnl_add_ioctl(cmd,
- cmd == SIOCCHGTUNNEL && p.name[0] ?
- p.name : "ip6tnl0", p.name, &p);
+ switch (p.proto) {
+ case IPPROTO_IPIP:
+ case IPPROTO_IPV6:
+ return tnl_add_ioctl(cmd, "ip6tnl0", p.name, &p);
+ case IPPROTO_GRE:
+ return tnl_add_ioctl(cmd, "ip6gre0", p.name, &p);
+ default:
+ fprintf(stderr, "cannot determine tunnel mode (ip6ip6, ipip6 or gre)\n");
+ }
+ return -1;
}
static int do_del(int argc, char **argv)
{
- struct ip6_tnl_parm p;
+ struct ip6_tnl_parm2 p;
ip6_tnl_parm_init(&p, 1);
if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0)
return -1;
- return tnl_del_ioctl(p.name[0] ? p.name : "ip6tnl0", p.name, &p);
+ switch (p.proto) {
+ case IPPROTO_IPIP:
+ case IPPROTO_IPV6:
+ return tnl_del_ioctl("ip6tnl0", p.name, &p);
+ case IPPROTO_GRE:
+ return tnl_del_ioctl("ip6gre0", p.name, &p);
+ default:
+ return tnl_del_ioctl(p.name, p.name, &p);
+ }
+ return -1;
}
int do_ip6tunnel(int argc, char **argv)