[NET]: Introduce RTA_TABLE/FRA_TABLE attributes

Introduce RTA_TABLE route attribute and FRA_TABLE routing rule attribute
to hold 32 bit routing table IDs. Usespace compatibility is provided by
continuing to accept and send the rtm_table field, but because of its
limited size it can only carry the low 8 bits of the table ID. This
implies that if larger IDs are used, _all_ userspace programs using them
need to use RTA_TABLE.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b873cbcdd0b8..12128b82c9dc 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2652,6 +2652,7 @@ static int rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
         r->rtm_src_len  = 0;
         r->rtm_tos      = rt->fl.fl4_tos;
         r->rtm_table    = RT_TABLE_MAIN;
+        RTA_PUT_U32(skb, RTA_TABLE, RT_TABLE_MAIN);
         r->rtm_type     = rt->rt_type;
         r->rtm_scope    = RT_SCOPE_UNIVERSE;
         r->rtm_protocol = RTPROT_UNSPEC;