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net/mlx5e: Wait for FPGA command responses with a timeout 

Generally, FPGA IPSec commands must always complete.
We want to wait for one minute for them to complete gracefully also
when killing a process.

Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Aviad Yehezkel 2018-02-11 17:12:44 +02:00 committed by Saeed Mahameed
parent 46f3ee4f3a
commit ef927a9c16
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
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@ -39,6 +39,7 @@
#include "fpga/core.h" #include "fpga/core.h"
#define SBU_QP_QUEUE_SIZE 8 #define SBU_QP_QUEUE_SIZE 8
#define MLX5_FPGA_IPSEC_CMD_TIMEOUT_MSEC (60 * 1000)
enum mlx5_ipsec_response_syndrome { enum mlx5_ipsec_response_syndrome {
MLX5_IPSEC_RESPONSE_SUCCESS = 0, MLX5_IPSEC_RESPONSE_SUCCESS = 0,
@ -217,12 +218,14 @@ void *mlx5_fpga_ipsec_sa_cmd_exec(struct mlx5_core_dev *mdev,
int mlx5_fpga_ipsec_sa_cmd_wait(void *ctx) int mlx5_fpga_ipsec_sa_cmd_wait(void *ctx)
{ {
struct mlx5_ipsec_command_context *context = ctx; struct mlx5_ipsec_command_context *context = ctx;
unsigned long timeout =
msecs_to_jiffies(MLX5_FPGA_IPSEC_CMD_TIMEOUT_MSEC);
int res; int res;
res = wait_for_completion_killable(&context->complete); res = wait_for_completion_timeout(&context->complete, timeout);
if (res) { if (!res) {
mlx5_fpga_warn(context->dev, "Failure waiting for IPSec command response\n"); mlx5_fpga_warn(context->dev, "Failure waiting for IPSec command response\n");
return -EINTR; return -ETIMEDOUT;
} }
if (context->status == MLX5_FPGA_IPSEC_SACMD_COMPLETE) if (context->status == MLX5_FPGA_IPSEC_SACMD_COMPLETE)