[net-next 06/17] net/mlx5: DR, Warn and ignore SW steering rule insertion on QP err
From: Saeed Mahameed <saeed@kernel.org>
Date: 2021-08-27 00:59:02
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Yevgeny Kliteynik <redacted> In the event of SW steering QP entering error state, SW steering cannot insert more rules, and will silently ignore the insertion after issuing a warning. Signed-off-by: Yuval Avnery <redacted> Signed-off-by: Yevgeny Kliteynik <redacted> Reviewed-by: Alex Vesker <redacted> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> --- .../mellanox/mlx5/core/steering/dr_send.c | 16 ++++++++++++++-- .../mellanox/mlx5/core/steering/dr_types.h | 1 + 2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
index 24f40e17f176..bfb14b4b1906 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c@@ -325,10 +325,14 @@ static int dr_handle_pending_wc(struct mlx5dr_domain *dmn, do { ne = dr_poll_cq(send_ring->cq, 1); - if (ne < 0) + if (unlikely(ne < 0)) { + mlx5_core_warn_once(dmn->mdev, "SMFS QPN 0x%x is disabled/limited", + send_ring->qp->qpn); + send_ring->err_state = true; return ne; - else if (ne == 1) + } else if (ne == 1) { send_ring->pending_wqe -= send_ring->signal_th; + } } while (is_drain && send_ring->pending_wqe); return 0;
@@ -361,6 +365,14 @@ static int dr_postsend_icm_data(struct mlx5dr_domain *dmn, u32 buff_offset; int ret; + if (unlikely(dmn->mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR || + send_ring->err_state)) { + mlx5_core_dbg_once(dmn->mdev, + "Skipping post send: QP err state: %d, device state: %d\n", + send_ring->err_state, dmn->mdev->state); + return 0; + } + spin_lock(&send_ring->lock); ret = dr_handle_pending_wc(dmn, send_ring);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
index 474cf32a67c4..4fd14e9b7e1c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h@@ -1285,6 +1285,7 @@ struct mlx5dr_send_ring { u8 sync_buff[MIN_READ_SYNC]; struct mlx5dr_mr *sync_mr; spinlock_t lock; /* Protect the data path of the send ring */ + bool err_state; /* send_ring is not usable in err state */ }; int mlx5dr_send_ring_alloc(struct mlx5dr_domain *dmn);
--
2.31.1