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Commit b6179813 authored by Roopa Prabhu's avatar Roopa Prabhu Committed by David S. Miller
Browse files

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: default avatarRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0be1b305

net/ipv4/route.c

+11 −2
Original line number Diff line number Diff line
@@ -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;



	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);

				   NETLINK_CB(in_skb).portid, nlh->nlmsg_seq,

				   rt);

	if (err < 0)

		goto errout_free;