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| author | Vlad Yasevich <vyasevic@redhat.com> | 2013-04-02 17:10:07 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-05-13 15:02:35 +0100 |
| commit | c8b2a1ad3630f35394bc23595cfa075d60c81f18 (patch) | |
| tree | 4e61bbbf2fd9fd205f1703132e10158cd58a3aae /net/core/dev_addr_lists.c | |
| parent | c1e0fcf7ab8dfdec5a752482880900bcfd7b9527 (diff) | |
| download | kernel_samsung_smdk4412-c8b2a1ad3630f35394bc23595cfa075d60c81f18.zip kernel_samsung_smdk4412-c8b2a1ad3630f35394bc23595cfa075d60c81f18.tar.gz kernel_samsung_smdk4412-c8b2a1ad3630f35394bc23595cfa075d60c81f18.tar.bz2 | |
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 <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/core/dev_addr_lists.c')
| -rw-r--r-- | net/core/dev_addr_lists.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 0387da0..cd09414 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); } |