diff mbox series

[RFC,net-next,4/7] net/ipv4: Allow notifier to fail route repolace

Message ID 20180322225757.10377-5-dsa@cumulusnetworks.com
State RFC, archived
Delegated to: David Miller
Headers show
Series net: Allow FIB notifiers to fail add and replace | expand

Commit Message

David Ahern March 22, 2018, 10:57 p.m. UTC 
Add checking to call to call_fib_entry_notifiers for IPv4 route replace.
Allows a notifier handler to fail the replace.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
---
 net/ipv4/fib_trie.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index d0f70a16f8de..113822aa9ea7 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1219,8 +1219,13 @@  int fib_table_insert(struct net *net, struct fib_table *tb,
 			new_fa->tb_id = tb->tb_id;
 			new_fa->fa_default = -1;
 
-			call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE,
-						 key, plen, new_fa, extack);
+			err = call_fib_entry_notifiers(net,
+						       FIB_EVENT_ENTRY_REPLACE,
+						       key, plen, new_fa,
+						       extack);
+			if (err)
+				goto out_free_new_fa;
+
 			rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen,
 				  tb->tb_id, &cfg->fc_nlinfo, nlflags);