diff mbox series

[net-next,V2,12/15] net/mlx5: Add sync reset drop mode support

Message ID 20241014205300.193519-13-tariqt@nvidia.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net/mlx5: Refactor esw QoS to support generalized operations | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 5 this patch: 5
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: linux-rdma@vger.kernel.org
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4 this patch: 4
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 27 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-10-15--06-00 (tests: 777)

Commit Message

Tariq Toukan Oct. 14, 2024, 8:52 p.m. UTC 
From: Moshe Shemesh <moshe@nvidia.com>

On sync reset flow, firmware may request a PF, which already
acknowledged the unload event, to move to drop mode. Drop mode means
that this PF will reduce polling frequency, as this PF is not going to
have another active part in the reset, but only reload back after the
reset.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Aya Levin <ayal@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
index 4f55e55ecb55..566710d34a7b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -35,6 +35,7 @@  struct mlx5_fw_reset {
 enum {
 	MLX5_FW_RST_STATE_IDLE = 0,
 	MLX5_FW_RST_STATE_TOGGLE_REQ = 4,
+	MLX5_FW_RST_STATE_DROP_MODE = 5,
 };
 
 enum {
@@ -616,6 +617,7 @@  static void mlx5_sync_reset_unload_event(struct work_struct *work)
 	struct mlx5_fw_reset *fw_reset;
 	struct mlx5_core_dev *dev;
 	unsigned long timeout;
+	int poll_freq = 20;
 	bool reset_action;
 	u8 rst_state;
 	int err;
@@ -651,7 +653,12 @@  static void mlx5_sync_reset_unload_event(struct work_struct *work)
 			reset_action = true;
 			break;
 		}
-		msleep(20);
+		if (rst_state == MLX5_FW_RST_STATE_DROP_MODE) {
+			mlx5_core_info(dev, "Sync Reset Drop mode ack\n");
+			mlx5_set_fw_rst_ack(dev);
+			poll_freq = 1000;
+		}
+		msleep(poll_freq);
 	} while (!time_after(jiffies, timeout));
 
 	if (!reset_action) {