netdev - [PATCH net-next] fib_trie: call fib_table_flush

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Message-Id: <1426017834-24209-1-git-send-email-sd@queasysnail.net>
Date:	Tue, 10 Mar 2015 21:03:54 +0100
From:	Sabrina Dubroca <sd@...asysnail.net>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, alexander.h.duyck@...hat.com,
	sfeldma@...il.com, Sabrina Dubroca <sd@...asysnail.net>
Subject: [PATCH net-next] fib_trie: call fib_table_flush_external under RTNL

Move rtnl_lock() before the call to fib4_rules_exit so that
fib_table_flush_external is called under RTNL.

Fixes: 104616e74e0b ("switchdev: don't support custom ip rules, for now")
Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>
---
 net/ipv4/fib_frontend.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e067770235bf..ed94bc80eb78 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1126,11 +1126,12 @@ static void ip_fib_net_exit(struct net *net)
 {
 	unsigned int i;
 
+	rtnl_lock();
+
 #ifdef CONFIG_IP_MULTIPLE_TABLES
 	fib4_rules_exit(net);
 #endif
 
-	rtnl_lock();
 	for (i = 0; i < FIB_TABLE_HASHSZ; i++) {
 		struct hlist_head *head = &net->ipv4.fib_table_hash[i];
 		struct hlist_node *tmp;
-- 
2.3.2

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