Commit 709772e6 authored by Krzysztof Piotr Oledzki's avatar Krzysztof Piotr Oledzki Committed by David S. Miller
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net: Fix routing tables with id > 255 for legacy software

Most legacy software do not like tables > 255 as rtm_table is u8
so tb_id is sent &0xff and it is possible to mismatch for example
table 510 with table 254 (main).

This patch introduces RT_TABLE_COMPAT=252 so the code uses it if
tb_id > 255. It makes such old applications happy, new
ones are still able to use RTA_TABLE to get a proper table id.
Signed-off-by: default avatarKrzysztof Piotr Oledzki <>
Acked-by: default avatarPatrick McHardy <>
Signed-off-by: default avatarDavid S. Miller <>
parent 99c6f60e
......@@ -246,6 +246,7 @@ enum rt_class_t
/* User defined values */
......@@ -960,7 +960,10 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
rtm->rtm_dst_len = dst_len;
rtm->rtm_src_len = 0;
rtm->rtm_tos = tos;
rtm->rtm_table = tb_id;
if (tb_id < 256)
rtm->rtm_table = tb_id;
rtm->rtm_table = RT_TABLE_COMPAT;
NLA_PUT_U32(skb, RTA_TABLE, tb_id);
rtm->rtm_type = type;
rtm->rtm_flags = fi->fib_flags;
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