@@ -364,6 +364,7 @@ enum ovs_tunnel_key_attr {
OVS_TUNNEL_KEY_ATTR_IPV6_DST, /* struct in6_addr dst IPv6 address. */
OVS_TUNNEL_KEY_ATTR_PAD,
OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS, /* struct erspan_metadata */
+ OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE, /* No argument. IPV4_INFO_BRIDGE mode.*/
__OVS_TUNNEL_KEY_ATTR_MAX
};
@@ -403,6 +403,7 @@ size_t ovs_key_attr_size(void)
[OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
[OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = sizeof(struct in6_addr) },
[OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS] = { .len = OVS_ATTR_VARIABLE },
+ [OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE] = { .len = 0 },
};
static const struct ovs_len_tbl
@@ -666,6 +667,7 @@ static int ip_tun_from_nlattr(const struct nlattr *attr,
bool log)
{
bool ttl = false, ipv4 = false, ipv6 = false;
+ bool info_bridge_mode = false;
__be16 tun_flags = 0;
int opts_type = 0;
struct nlattr *a;
@@ -782,6 +784,10 @@ static int ip_tun_from_nlattr(const struct nlattr *attr,
tun_flags |= TUNNEL_ERSPAN_OPT;
opts_type = type;
break;
+ case OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE:
+ info_bridge_mode = true;
+ ipv4 = true;
+ break;
default:
OVS_NLERR(log, "Unknown IP tunnel attribute %d",
type);
@@ -812,16 +818,29 @@ static int ip_tun_from_nlattr(const struct nlattr *attr,
OVS_NLERR(log, "IP tunnel dst address not specified");
return -EINVAL;
}
- if (ipv4 && !match->key->tun_key.u.ipv4.dst) {
- OVS_NLERR(log, "IPv4 tunnel dst address is zero");
- return -EINVAL;
+ if (ipv4) {
+ if (info_bridge_mode) {
+ if (match->key->tun_key.u.ipv4.src ||
+ match->key->tun_key.u.ipv4.dst ||
+ match->key->tun_key.tp_src ||
+ match->key->tun_key.tp_dst ||
+ match->key->tun_key.ttl ||
+ match->key->tun_key.tos ||
+ tun_flags & ~TUNNEL_KEY) {
+ OVS_NLERR(log, "IPv4 tun info is not correct");
+ return -EINVAL;
+ }
+ } else if (!match->key->tun_key.u.ipv4.dst) {
+ OVS_NLERR(log, "IPv4 tunnel dst address is zero");
+ return -EINVAL;
+ }
}
if (ipv6 && ipv6_addr_any(&match->key->tun_key.u.ipv6.dst)) {
OVS_NLERR(log, "IPv6 tunnel dst address is zero");
return -EINVAL;
}
- if (!ttl) {
+ if (!ttl && !info_bridge_mode) {
OVS_NLERR(log, "IP tunnel TTL not specified.");
return -EINVAL;
}
@@ -912,6 +931,13 @@ static int __ip_tun_to_nlattr(struct sk_buff *skb,
return -EMSGSIZE;
}
+ if (tun_proto == AF_INET && !(output->tun_flags & ~TUNNEL_KEY) &&
+ !output->u.ipv4.src && !output->u.ipv4.dst &&
+ !output->tp_src && !output->tp_dst &&
+ !output->ttl && !output->tos &&
+ nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_IPV4_INFO_BRIDGE))
+ return -EMSGSIZE;
+
return 0;
}
@@ -2605,6 +2631,8 @@ static int validate_and_copy_set_tun(const struct nlattr *attr,
tun_info->mode = IP_TUNNEL_INFO_TX;
if (key.tun_proto == AF_INET6)
tun_info->mode |= IP_TUNNEL_INFO_IPV6;
+ else if (key.tun_proto == AF_INET && key.tun_key.u.ipv4.dst == 0)
+ tun_info->mode |= IP_TUNNEL_INFO_BRIDGE;
tun_info->key = key.tun_key;
/* We need to store the options in the action itself since