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authorMohamad Haj Yahia <mohamad@mellanox.com>2017-02-23 11:19:36 +0200
committerSaeed Mahameed <saeedm@mellanox.com>2017-05-23 16:23:31 +0300
commit73dd3a4839c1d27c36d4dcc92e1ff44225ecbeb7 (patch)
tree95b44e558e85cb07532eca3ae3f0644d9ae30f59 /drivers/net/ethernet/mellanox/mlx5/core/eq.c
parentnet/mlx5e: IPoIB, handle RX packet correctly (diff)
downloadlinux-dev-73dd3a4839c1d27c36d4dcc92e1ff44225ecbeb7.tar.xz
linux-dev-73dd3a4839c1d27c36d4dcc92e1ff44225ecbeb7.zip
net/mlx5: Avoid using pending command interface slots
Currently when firmware command gets stuck or it takes long time to complete, the driver command will get timeout and the command slot is freed and can be used for new commands, and if the firmware receive new command on the old busy slot its behavior is unexpected and this could be harmful. To fix this when the driver command gets timeout we return failure, but we don't free the command slot and we wait for the firmware to explicitly respond to that command. Once all the entries are busy we will stop processing new firmware commands. Fixes: 9cba4ebcf374 ('net/mlx5: Fix potential deadlock in command mode change') Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Cc: kernel-team@fb.com Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/eq.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/eq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index ea5d8d37a75c..33eae5ad2fb0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -422,7 +422,7 @@ static irqreturn_t mlx5_eq_int(int irq, void *eq_ptr)
break;
case MLX5_EVENT_TYPE_CMD:
- mlx5_cmd_comp_handler(dev, be32_to_cpu(eqe->data.cmd.vector));
+ mlx5_cmd_comp_handler(dev, be32_to_cpu(eqe->data.cmd.vector), false);
break;
case MLX5_EVENT_TYPE_PORT_CHANGE: