[ovs-dev] [PATCH v1 3/4] route-table: extract gw information.

[Pravin B Shelar]

Routing table will be used by ovs userspace tunneling, it need to
know gw address, following commit extract gw information from
netlink message so that ovs can populate it in ovs route table.

Signed-off-by: Pravin B Shelar <pshelar at nicira.com>
---
 lib/route-table.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/lib/route-table.c b/lib/route-table.c
index cb8f0f7..b168315 100644
--- a/lib/route-table.c
+++ b/lib/route-table.c
@@ -41,6 +41,7 @@ struct route_data {
 
     /* Extracted from Netlink attributes. */
     ovs_be32 rta_dst; /* 0 if missing. */
+    ovs_be32 rta_gw;
     char ifname[IFNAMSIZ]; /* Interface name. */
 };
 
@@ -205,6 +206,7 @@ route_table_parse(struct ofpbuf *buf, struct route_table_msg *change)
     static const struct nl_policy policy[] = {
         [RTA_DST] = { .type = NL_A_U32, .optional = true  },
         [RTA_OIF] = { .type = NL_A_U32, .optional = false },
+        [RTA_GATEWAY] = { .type = NL_A_U32, .optional = true },
     };
 
     struct nlattr *attrs[ARRAY_SIZE(policy)];
@@ -251,6 +253,10 @@ route_table_parse(struct ofpbuf *buf, struct route_table_msg *change)
         if (attrs[RTA_DST]) {
             change->rd.rta_dst = nl_attr_get_be32(attrs[RTA_DST]);
         }
+        if (attrs[RTA_GATEWAY]) {
+            change->rd.rta_gw = nl_attr_get_be32(attrs[RTA_GATEWAY]);
+        }
+
 
     } else {
         VLOG_DBG_RL(&rl, "received unparseable rtnetlink route message");
@@ -272,7 +278,8 @@ route_table_handle_msg(const struct route_table_msg *change)
     if (change->relevant && change->nlmsg_type == RTM_NEWROUTE) {
         const struct route_data *rd = &change->rd;
 
-        ovs_router_insert(rd->rta_dst, rd->rtm_dst_len, rd->ifname, 0);
+        ovs_router_insert(rd->rta_dst, rd->rtm_dst_len,
+                          rd->ifname, rd->rta_gw);
     }
 }
 
-- 
1.7.1