Commit 8a430ed5 authored Jan 11, 2017 by David Ahern Committed by David S. Miller Jan 12, 2017

net: ipv4: fix table id in getroute response



rtm_table is an 8-bit field while table ids are allowed up to u32. Commit
709772e6 ("net: Fix routing tables with id > 255 for legacy software")
added the preference to set rtm_table in dumps to RT_TABLE_COMPAT if the
table id is > 255. The table id returned on get route requests should do
the same.

Fixes: c36ba660 ("net: Allow user to get table id from route lookup")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 994c5483

net/ipv4/route.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2472,7 +2472,7 @@ static int rt_fill_info(struct net *net, __be32 dst, __be32 src, u32 table_id,
		r->rtm_dst_len = 32;
		r->rtm_src_len = 0;
		r->rtm_tos = fl4->flowi4_tos;
		r->rtm_table = table_id;
		r->rtm_table = table_id < 256 ? table_id : RT_TABLE_COMPAT;
		if (nla_put_u32(skb, RTA_TABLE, table_id))
		goto nla_put_failure;
		r->rtm_type = rt->rt_type;

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