ofproto-dpif-xlate: Distinguish "freezing" from "recirculation".

[cascardo/ovs.git] / ofproto / tunnel.c

diff --git a/ofproto/tunnel.c b/ofproto/tunnel.c
index b655d2d..a63cf71 100644 (file)
--- a/ofproto/tunnel.c
+++ b/ofproto/tunnel.c
@@ -373,7 +373,7 @@ tnl_wc_init(struct flow *flow, struct flow_wildcards *wc)
                                   FLOW_TNL_F_CSUM |
                                   FLOW_TNL_F_KEY);
         wc->masks.tunnel.ip_tos = UINT8_MAX;
-        wc->masks.tunnel.ip_ttl = UINT8_MAX;
+        wc->masks.tunnel.ip_ttl = 0;
         /* The tp_src and tp_dst members in flow_tnl are set to be always
          * wildcarded, not to unwildcard them here. */
         wc->masks.tunnel.tp_src = 0;
@@ -427,6 +427,14 @@ tnl_port_send(const struct ofport_dpif *ofport, struct flow *flow,
             flow->tunnel.ipv6_dst = tnl_port->match.ipv6_dst;
         }
     }
+    if (ipv6_addr_is_set(&flow->tunnel.ipv6_dst) ||
+        ipv6_addr_is_set(&flow->tunnel.ipv6_src)) {
+        out_port = ODPP_NONE;
+        VLOG_WARN_RL(&rl, "port (%s): IPv6 tunnel endpoint is not supported",
+                     netdev_get_name(tnl_port->netdev));
+        goto out;
+    }
+
     flow->pkt_mark = tnl_port->match.pkt_mark;
 
     if (!cfg->out_key_flow) {
@@ -685,40 +693,62 @@ tnl_port_build_header(const struct ofport_dpif *ofport,
                       const struct flow *tnl_flow,
                       const struct eth_addr dmac,
                       const struct eth_addr smac,
-                      ovs_be32 ip_src, struct ovs_action_push_tnl *data)
+                      const struct in6_addr * ipv6_src,
+                      struct ovs_action_push_tnl *data)
 {
     struct tnl_port *tnl_port;
     struct eth_header *eth;
     struct ip_header *ip;
+    struct ovs_16aligned_ip6_hdr *ip6;
     void *l3;
     int res;
+    ovs_be32 ip_src;
 
     fat_rwlock_rdlock(&rwlock);
     tnl_port = tnl_find_ofport(ofport);
     ovs_assert(tnl_port);
 
+    ip_src = in6_addr_get_mapped_ipv4(ipv6_src);
+
     /* Build Ethernet and IP headers. */
     memset(data->header, 0, sizeof data->header);
 
     eth = (struct eth_header *)data->header;
     eth->eth_dst = dmac;
     eth->eth_src = smac;
-    eth->eth_type = htons(ETH_TYPE_IP);
+    eth->eth_type = ip_src ? htons(ETH_TYPE_IP) : htons(ETH_TYPE_IPV6);
 
     l3 = (eth + 1);
-    ip = (struct ip_header *) l3;
 
-    ip->ip_ihl_ver = IP_IHL_VER(5, 4);
-    ip->ip_tos = tnl_flow->tunnel.ip_tos;
-    ip->ip_ttl = tnl_flow->tunnel.ip_ttl;
-    ip->ip_frag_off = (tnl_flow->tunnel.flags & FLOW_TNL_F_DONT_FRAGMENT) ?
-                      htons(IP_DF) : 0;
+    if (ip_src) {
+        ip = (struct ip_header *) l3;
+
+        ip->ip_ihl_ver = IP_IHL_VER(5, 4);
+        ip->ip_tos = tnl_flow->tunnel.ip_tos;
+        ip->ip_ttl = tnl_flow->tunnel.ip_ttl;
+        ip->ip_frag_off = (tnl_flow->tunnel.flags & FLOW_TNL_F_DONT_FRAGMENT) ?
+                          htons(IP_DF) : 0;
+
+        put_16aligned_be32(&ip->ip_src, ip_src);
+        put_16aligned_be32(&ip->ip_dst, tnl_flow->tunnel.ip_dst);
+    } else {
+        ip6 = (struct ovs_16aligned_ip6_hdr *) l3;
 
-    put_16aligned_be32(&ip->ip_src, ip_src);
-    put_16aligned_be32(&ip->ip_dst, tnl_flow->tunnel.ip_dst);
+        ip6->ip6_vfc = 0x60;
+        ip6->ip6_hlim = tnl_flow->tunnel.ip_ttl;
+
+        /* next header, plen - at netdev_build_header? */
+
+        memcpy(&ip6->ip6_src, ipv6_src, sizeof(ovs_be32[4]));
+        memcpy(&ip6->ip6_dst, &tnl_flow->tunnel.ipv6_dst, sizeof(ovs_be32[4]));
+    }
 
     res = netdev_build_header(tnl_port->netdev, data, tnl_flow);
-    ip->ip_csum = csum(ip, sizeof *ip);
+
+    if (ip_src) {
+        ip->ip_csum = csum(ip, sizeof *ip);
+    }
+
     fat_rwlock_unlock(&rwlock);
 
     return res;