From b61798130f1be5bff08712308126c2d7ebe390ef Mon Sep 17 00:00:00 2001 From: Roopa Prabhu Date: Thu, 25 May 2017 10:42:39 -0700 Subject: [PATCH] net: ipv4: RTM_GETROUTE: return matched fib result when requested 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 Signed-off-by: David S. Miller --- 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 1fa9127ec4db..3a7425694d8b 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -114,6 +114,8 @@ #include #include +#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; -- 2.20.1