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authorStephen Hemminger <shemminger@osdl.org>2006-05-23 15:20:25 -0700
committerDavid S. Miller <davem@davemloft.net>2006-05-23 15:20:25 -0700
commit387e2b0439026aa738a9edca15a57e5c0bcb4dfc (patch)
tree5d4e0349a0119fcff5278c1077b2b2888933d441 /net
parent4a063739138e2c4e933188d641f1593e01ce8285 (diff)
downloadlinux-stericsson-387e2b0439026aa738a9edca15a57e5c0bcb4dfc.tar.gz
[BRIDGE]: need to ref count the LLC sap
Bridge will OOPS on removal if other application has the SAP open. The bridge SAP might be shared with other usages, so need to do reference counting on module removal rather than explicit close/delete. Since packet might arrive after or during removal, need to clear the receive function handle, so LLC only hands it to user (if any). Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/bridge/br.c b/net/bridge/br.c
index 22d806cf40ca..12da21afb9ca 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -55,7 +55,7 @@ static int __init br_init(void)
static void __exit br_deinit(void)
{
- llc_sap_close(br_stp_sap);
+ rcu_assign_pointer(br_stp_sap->rcv_func, NULL);
#ifdef CONFIG_BRIDGE_NETFILTER
br_netfilter_fini();
@@ -67,6 +67,7 @@ static void __exit br_deinit(void)
synchronize_net();
+ llc_sap_put(br_stp_sap);
br_fdb_get_hook = NULL;
br_fdb_put_hook = NULL;