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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>
This commit is contained in:
Yevgeny Petrilin 2011-08-04 01:05:12 +00:00 committed by David S. Miller
parent c70a3a9203
commit 20e72a4409
1 changed files with 6 additions and 3 deletions
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9
drivers/net/mlx4/port.c
View File

@ -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);
}