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authorYevgeny Petrilin <yevgenyp@mellanox.co.il>2011-08-04 03:05:12 +0200
committerDavid S. Miller <davem@davemloft.net>2011-08-05 12:36:07 +0200
commit20e72a44098641f0c4de34a31287a93e006afb5b (patch)
tree5bcc128348cba73f523a74255efd43cb0e865a24 /drivers/net/mlx4
parentMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/jkirsher... (diff)
downloadlinux-20e72a44098641f0c4de34a31287a93e006afb5b.tar.xz
linux-20e72a44098641f0c4de34a31287a93e006afb5b.zip
mlx4: decreasing ref count when removing mac
For older FW versions, when a Mac address removed from Mac table, we should set 0 for reference count for the corresponding Mac index. Fixes a bug where removing Mac from the table still left that entry as invalid. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Tested-by: Roland Dreier <roland@purestorage.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/mlx4')
-rw-r--r--drivers/net/mlx4/port.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
index 1f95afda6841..609e0ec14cee 100644
--- a/drivers/net/mlx4/port.c
+++ b/drivers/net/mlx4/port.c
@@ -258,9 +258,12 @@ void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
if (validate_index(dev, table, index))
goto out;
- table->entries[index] = 0;
- mlx4_set_port_mac_table(dev, port, table->entries);
- --table->total;
+ /* Check whether this address has reference count */
+ if (!(--table->refs[index])) {
+ table->entries[index] = 0;
+ mlx4_set_port_mac_table(dev, port, table->entries);
+ --table->total;
+ }
out:
mutex_unlock(&table->mutex);
}