From: Roopa Prabhu <ro...@cumulusnetworks.com>
This patch adds support to return matched fib result when RTM_F_FIB_MATCH
flag is specified in RTM_GETROUTE request. This is useful for user-space
applications/controllers wanting to query a matching route.
Signed-off-by: Roopa Prabhu <ro...@cumulusnetworks.com>
---
net/ipv4/route.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6e0bd40..419bdba 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -114,6 +114,8 @@
#include <net/ip_tunnels.h>
#include <net/l3mdev.h>
+#include "fib_lookup.h"
+
#define RT_FL_TOS(oldflp4) \
((oldflp4)->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK))
@@ -2746,8 +2748,15 @@ static int inet_rtm_getroute(struct sk_buff *in_skb,
struct nlmsghdr *nlh,
if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE)
table_id = rt->rt_table_id;
- err = rt_fill_info(net, dst, src, table_id, &fl4, skb,
- NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, rt);
+ if (rtm->rtm_flags & RTM_F_FIB_MATCH)
+ err = fib_dump_info(skb, NETLINK_CB(in_skb).portid,
+ nlh->nlmsg_seq, RTM_NEWROUTE, table_id,
+ rt->rt_type, res.prefix, res.prefixlen,
+ fl4.flowi4_tos, res.fi, 0);
+ else
+ err = rt_fill_info(net, dst, src, table_id, &fl4, skb,
+ NETLINK_CB(in_skb).portid, nlh->nlmsg_seq,
+ rt);
if (err < 0)
goto errout_free;
--
1.9.1
