Commit 130c7b46 authored by Saeed Mahameed's avatar Saeed Mahameed
Browse files

net/mlx5e: TX, Dump WQs wqe descriptors on CQE with error events 



Dump the Work Queue's TX WQE descriptor when a completion with
error is received.

Example:
[5.331832] mlx5_core 0000:00:04.0 enp0s4: Error cqe on cqn 0xa, ci 0x1, TXQ-SQ qpn 0xe, opcode 0xd, syndrome 0x2, vendor syndrome 0x0
[5.333127] 00000000: 55 65 02 75 31 fe c2 d2 6b 6c 62 1e f9 e1 d8 5c
[5.333837] 00000010: d3 b2 6c b8 89 e4 84 20 0b f4 3c e0 f3 75 41 ca
[5.334568] 00000020: 46 00 00 00 cd 70 a0 92 18 3a 01 de 00 00 00 00
[5.335313] 00000030: 7d bc 05 89 b2 e9 00 02 1e 00 00 0e 00 00 30 d2
[5.335972] WQE DUMP: WQ size 1024 WQ cur size 0, WQE index 0x0, len: 64
[5.336710] 00000000: 00 00 00 1e 00 00 0e 04 00 00 00 08 00 00 00 00
[5.337524] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 12 33 33
[5.338151] 00000020: 00 00 00 16 52 54 00 00 00 01 86 dd 60 00 00 00
[5.338740] 00000030: 00 00 00 48 00 00 00 00 00 00 00 00 66 ba 58 14

Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent 7dee607e

drivers/net/ethernet/mellanox/mlx5/core/en_tx.c

+6 −0
Original line number Diff line number Diff line
@@ -458,8 +458,14 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) 
		if (unlikely(get_cqe_opcode(cqe) == MLX5_CQE_REQ_ERR)) {

			if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING,

					      &sq->state)) {

				struct mlx5e_tx_wqe_info *wi;

				u16 ci;



				ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc);

				wi = &sq->db.wqe_info[ci];

				mlx5e_dump_error_cqe(sq,

						     (struct mlx5_err_cqe *)cqe);

				mlx5_wq_cyc_wqe_dump(&sq->wq, ci, wi->num_wqebbs);

				queue_work(cq->channel->priv->wq,

					   &sq->recover_work);

			}

drivers/net/ethernet/mellanox/mlx5/core/wq.c

+18 −0
Original line number Diff line number Diff line
@@ -96,6 +96,24 @@ err_db_free: 
	return err;

}



void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides)

{

	size_t len;

	void *wqe;



	if (!net_ratelimit())

		return;



	nstrides = max_t(u8, nstrides, 1);



	len = nstrides << wq->fbc.log_stride;

	wqe = mlx5_wq_cyc_get_wqe(wq, ix);



	pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %ld\n",

		mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len);

	print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false);

}



int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,

		      void *qpc, struct mlx5_wq_qp *wq,

		      struct mlx5_wq_ctrl *wq_ctrl)

drivers/net/ethernet/mellanox/mlx5/core/wq.h

+1 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ struct mlx5_wq_ll { 
int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,

		       void *wqc, struct mlx5_wq_cyc *wq,

		       struct mlx5_wq_ctrl *wq_ctrl);

void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides);

u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);



int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,

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