From c8b2a1ad3630f35394bc23595cfa075d60c81f18 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Tue, 2 Apr 2013 17:10:07 -0400 Subject: net: count hw_addr syncs so that unsync works properly. [ Upstream commit 4543fbefe6e06a9e40d9f2b28d688393a299f079 ] A few drivers use dev_uc_sync/unsync to synchronize the address lists from master down to slave/lower devices. In some cases (bond/team) a single address list is synched down to multiple devices. At the time of unsync, we have a leak in these lower devices, because "synced" is treated as a boolean and the address will not be unsynced for anything after the first device/call. Treat "synced" as a count (same as refcount) and allow all unsync calls to work. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings --- net/core/dev_addr_lists.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/core') diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 0387da0e1b5..cd094146e41 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -57,7 +57,7 @@ static int __hw_addr_add_ex(struct netdev_hw_addr_list *list, ha->type = addr_type; ha->refcount = 1; ha->global_use = global; - ha->synced = false; + ha->synced = 0; list_add_tail_rcu(&ha->list, &list->list); list->count++; return 0; @@ -155,7 +155,7 @@ int __hw_addr_sync(struct netdev_hw_addr_list *to_list, addr_len, ha->type); if (err) break; - ha->synced = true; + ha->synced++; ha->refcount++; } else if (ha->refcount == 1) { __hw_addr_del(to_list, ha->addr, addr_len, ha->type); @@ -176,7 +176,7 @@ void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, if (ha->synced) { __hw_addr_del(to_list, ha->addr, addr_len, ha->type); - ha->synced = false; + ha->synced--; __hw_addr_del(from_list, ha->addr, addr_len, ha->type); } -- cgit v1.2.3-18-g5258