From: Milan Kocian When you replace route via ip r r command the netlink multicast message is not send. This patch corrects it. NL message is sent with NLM_F_REPLACE flag. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=8320 Signed-off-by: Milan Kocian Cc: Patrick McHardy Cc: David Miller Signed-off-by: Andrew Morton --- net/ipv4/fib_hash.c | 6 ++++-- net/ipv4/fib_lookup.h | 3 ++- net/ipv4/fib_semantics.c | 5 +++-- net/ipv4/fib_trie.c | 6 ++++-- 4 files changed, 13 insertions(+), 7 deletions(-) diff -puN net/ipv4/fib_hash.c~networking-fix-sending-netlink-message-when-replace-route net/ipv4/fib_hash.c --- a/net/ipv4/fib_hash.c~networking-fix-sending-netlink-message-when-replace-route +++ a/net/ipv4/fib_hash.c @@ -456,6 +456,8 @@ static int fn_hash_insert(struct fib_tab fib_release_info(fi_drop); if (state & FA_S_ACCESSED) rt_cache_flush(-1); + rtmsg_fib(RTM_NEWROUTE, key, fa, cfg->fc_dst_len, tb->tb_id, + &cfg->fc_nlinfo, NLM_F_REPLACE); return 0; } @@ -523,7 +525,7 @@ static int fn_hash_insert(struct fib_tab rt_cache_flush(-1); rtmsg_fib(RTM_NEWROUTE, key, new_fa, cfg->fc_dst_len, tb->tb_id, - &cfg->fc_nlinfo); + &cfg->fc_nlinfo, 0); return 0; out_free_new_fa: @@ -589,7 +591,7 @@ static int fn_hash_delete(struct fib_tab fa = fa_to_delete; rtmsg_fib(RTM_DELROUTE, key, fa, cfg->fc_dst_len, - tb->tb_id, &cfg->fc_nlinfo); + tb->tb_id, &cfg->fc_nlinfo, 0); kill_fn = 0; write_lock_bh(&fib_hash_lock); diff -puN net/ipv4/fib_lookup.h~networking-fix-sending-netlink-message-when-replace-route net/ipv4/fib_lookup.h --- a/net/ipv4/fib_lookup.h~networking-fix-sending-netlink-message-when-replace-route +++ a/net/ipv4/fib_lookup.h @@ -30,7 +30,8 @@ extern int fib_dump_info(struct sk_buff int dst_len, u8 tos, struct fib_info *fi, unsigned int); extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, - int dst_len, u32 tb_id, struct nl_info *info); + int dst_len, u32 tb_id, struct nl_info *info, + unsigned int nlm_flags); extern struct fib_alias *fib_find_alias(struct list_head *fah, u8 tos, u32 prio); extern int fib_detect_death(struct fib_info *fi, int order, diff -puN net/ipv4/fib_semantics.c~networking-fix-sending-netlink-message-when-replace-route net/ipv4/fib_semantics.c --- a/net/ipv4/fib_semantics.c~networking-fix-sending-netlink-message-when-replace-route +++ a/net/ipv4/fib_semantics.c @@ -301,7 +301,8 @@ static inline size_t fib_nlmsg_size(stru } void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, - int dst_len, u32 tb_id, struct nl_info *info) + int dst_len, u32 tb_id, struct nl_info *info, + unsigned int nlm_flags) { struct sk_buff *skb; u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; @@ -313,7 +314,7 @@ void rtmsg_fib(int event, __be32 key, st err = fib_dump_info(skb, info->pid, seq, event, tb_id, fa->fa_type, fa->fa_scope, key, dst_len, - fa->fa_tos, fa->fa_info, 0); + fa->fa_tos, fa->fa_info, nlm_flags); if (err < 0) { /* -EMSGSIZE implies BUG in fib_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); diff -puN net/ipv4/fib_trie.c~networking-fix-sending-netlink-message-when-replace-route net/ipv4/fib_trie.c --- a/net/ipv4/fib_trie.c~networking-fix-sending-netlink-message-when-replace-route +++ a/net/ipv4/fib_trie.c @@ -1226,6 +1226,8 @@ static int fn_trie_insert(struct fib_tab fib_release_info(fi_drop); if (state & FA_S_ACCESSED) rt_cache_flush(-1); + rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, + tb->tb_id, &cfg->fc_nlinfo, NLM_F_REPLACE); goto succeeded; } @@ -1278,7 +1280,7 @@ static int fn_trie_insert(struct fib_tab rt_cache_flush(-1); rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, tb->tb_id, - &cfg->fc_nlinfo); + &cfg->fc_nlinfo, 0); succeeded: return 0; @@ -1624,7 +1626,7 @@ static int fn_trie_delete(struct fib_tab fa = fa_to_delete; rtmsg_fib(RTM_DELROUTE, htonl(key), fa, plen, tb->tb_id, - &cfg->fc_nlinfo); + &cfg->fc_nlinfo, 0); l = fib_find_node(t, key); li = find_leaf_info(l, plen); _