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authorAya Levin <ayal@mellanox.com>2020-03-16 16:53:10 +0200
committerSaeed Mahameed <saeedm@mellanox.com>2020-03-24 14:43:05 -0700
commite239c6d686e1c37fb2ab143162dfb57471a8643f (patch)
treec271174555ff77593e9e3a82a06c48e7f5899b55 /drivers
parent39369fd536d485a99a59d8e357c0d4d3ce19a3b8 (diff)
downloadlinux-e239c6d686e1c37fb2ab143162dfb57471a8643f.tar.bz2
net/mlx5e: Fix ICOSQ recovery flow with Striding RQ
In striding RQ mode, the buffers of an RX WQE are first prepared and posted to the HW using a UMR WQEs via the ICOSQ. We maintain the state of these in-progress WQEs in the RQ SW struct. In the flow of ICOSQ recovery, the corresponding RQ is not in error state, hence: - The buffers of the in-progress WQEs must be released and the RQ metadata should reflect it. - Existing RX WQEs in the RQ should not be affected. For this, wrap the dealloc of the in-progress WQEs in a function, and use it in the ICOSQ recovery flow instead of mlx5e_free_rx_descs(). Fixes: be5323c8379f ("net/mlx5e: Report and recover from CQE error on ICOSQ") Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en.h1
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c2
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_main.c31
3 files changed, 26 insertions, 8 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 571ac5976549..c9606b8ab6ef 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1060,6 +1060,7 @@ int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state, int next_state);
void mlx5e_activate_rq(struct mlx5e_rq *rq);
void mlx5e_deactivate_rq(struct mlx5e_rq *rq);
void mlx5e_free_rx_descs(struct mlx5e_rq *rq);
+void mlx5e_free_rx_in_progress_descs(struct mlx5e_rq *rq);
void mlx5e_activate_icosq(struct mlx5e_icosq *icosq);
void mlx5e_deactivate_icosq(struct mlx5e_icosq *icosq);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
index 6c72b592315b..a01e2de2488f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
@@ -90,7 +90,7 @@ static int mlx5e_rx_reporter_err_icosq_cqe_recover(void *ctx)
goto out;
mlx5e_reset_icosq_cc_pc(icosq);
- mlx5e_free_rx_descs(rq);
+ mlx5e_free_rx_in_progress_descs(rq);
clear_bit(MLX5E_SQ_STATE_RECOVERING, &icosq->state);
mlx5e_activate_icosq(icosq);
mlx5e_activate_rq(rq);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 21de4764d4c0..4ef3dc79f73c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -813,6 +813,29 @@ int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq, int wait_time)
return -ETIMEDOUT;
}
+void mlx5e_free_rx_in_progress_descs(struct mlx5e_rq *rq)
+{
+ struct mlx5_wq_ll *wq;
+ u16 head;
+ int i;
+
+ if (rq->wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
+ return;
+
+ wq = &rq->mpwqe.wq;
+ head = wq->head;
+
+ /* Outstanding UMR WQEs (in progress) start at wq->head */
+ for (i = 0; i < rq->mpwqe.umr_in_progress; i++) {
+ rq->dealloc_wqe(rq, head);
+ head = mlx5_wq_ll_get_wqe_next_ix(wq, head);
+ }
+
+ rq->mpwqe.actual_wq_head = wq->head;
+ rq->mpwqe.umr_in_progress = 0;
+ rq->mpwqe.umr_completed = 0;
+}
+
void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
{
__be16 wqe_ix_be;
@@ -820,14 +843,8 @@ void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
- u16 head = wq->head;
- int i;
- /* Outstanding UMR WQEs (in progress) start at wq->head */
- for (i = 0; i < rq->mpwqe.umr_in_progress; i++) {
- rq->dealloc_wqe(rq, head);
- head = mlx5_wq_ll_get_wqe_next_ix(wq, head);
- }
+ mlx5e_free_rx_in_progress_descs(rq);
while (!mlx5_wq_ll_is_empty(wq)) {
struct mlx5e_rx_wqe_ll *wqe;