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https://github.com/edk2-porting/linux-next.git
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net/mlx5e: Generalize tx reporter's functionality
Prepare for code sharing with rx reporter, which is added in the following patches in the set. Introduce a generic error_ctx for agnostic recovery despatch. Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Aya Levin
Saeed Mahameed
parent
06293ae4fa
commit
c50de4af1d
@ -23,8 +23,9 @@ mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
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#
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mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
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en_tx.o en_rx.o en_dim.o en_txrx.o en/xdp.o en_stats.o \
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en_selftest.o en/port.o en/monitor_stats.o en/reporter_tx.o \
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en/params.o en/xsk/umem.o en/xsk/setup.o en/xsk/rx.o en/xsk/tx.o
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en_selftest.o en/port.o en/monitor_stats.o en/health.o \
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en/reporter_tx.o en/params.o en/xsk/umem.o en/xsk/setup.o \
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en/xsk/rx.o en/xsk/tx.o
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#
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# Netdev extra
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82
drivers/net/ethernet/mellanox/mlx5/core/en/health.c
Normal file
82
drivers/net/ethernet/mellanox/mlx5/core/en/health.c
Normal file
@ -0,0 +1,82 @@
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 Mellanox Technologies.
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#include "health.h"
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#include "lib/eq.h"
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int mlx5e_health_sq_to_ready(struct mlx5e_channel *channel, u32 sqn)
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{
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struct mlx5_core_dev *mdev = channel->mdev;
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struct net_device *dev = channel->netdev;
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struct mlx5e_modify_sq_param msp = {};
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int err;
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msp.curr_state = MLX5_SQC_STATE_ERR;
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msp.next_state = MLX5_SQC_STATE_RST;
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err = mlx5e_modify_sq(mdev, sqn, &msp);
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if (err) {
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netdev_err(dev, "Failed to move sq 0x%x to reset\n", sqn);
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return err;
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}
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memset(&msp, 0, sizeof(msp));
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msp.curr_state = MLX5_SQC_STATE_RST;
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msp.next_state = MLX5_SQC_STATE_RDY;
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err = mlx5e_modify_sq(mdev, sqn, &msp);
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if (err) {
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netdev_err(dev, "Failed to move sq 0x%x to ready\n", sqn);
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return err;
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}
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return 0;
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}
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int mlx5e_health_recover_channels(struct mlx5e_priv *priv)
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{
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int err = 0;
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rtnl_lock();
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mutex_lock(&priv->state_lock);
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if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
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goto out;
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err = mlx5e_safe_reopen_channels(priv);
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out:
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mutex_unlock(&priv->state_lock);
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rtnl_unlock();
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return err;
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}
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int mlx5e_health_channel_eq_recover(struct mlx5_eq_comp *eq, struct mlx5e_channel *channel)
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{
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u32 eqe_count;
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netdev_err(channel->netdev, "EQ 0x%x: Cons = 0x%x, irqn = 0x%x\n",
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eq->core.eqn, eq->core.cons_index, eq->core.irqn);
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eqe_count = mlx5_eq_poll_irq_disabled(eq);
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if (!eqe_count)
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return -EIO;
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netdev_err(channel->netdev, "Recovered %d eqes on EQ 0x%x\n",
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eqe_count, eq->core.eqn);
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channel->stats->eq_rearm++;
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return 0;
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}
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int mlx5e_health_report(struct mlx5e_priv *priv,
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struct devlink_health_reporter *reporter, char *err_str,
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struct mlx5e_err_ctx *err_ctx)
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{
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if (!reporter) {
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netdev_err(priv->netdev, err_str);
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return err_ctx->recover(&err_ctx->ctx);
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}
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return devlink_health_report(reporter, err_str, err_ctx);
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}
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@ -11,4 +11,18 @@ void mlx5e_reporter_tx_destroy(struct mlx5e_priv *priv);
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void mlx5e_reporter_tx_err_cqe(struct mlx5e_txqsq *sq);
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int mlx5e_reporter_tx_timeout(struct mlx5e_txqsq *sq);
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#define MLX5E_REPORTER_PER_Q_MAX_LEN 256
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struct mlx5e_err_ctx {
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int (*recover)(void *ctx);
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void *ctx;
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};
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int mlx5e_health_sq_to_ready(struct mlx5e_channel *channel, u32 sqn);
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int mlx5e_health_channel_eq_recover(struct mlx5_eq_comp *eq, struct mlx5e_channel *channel);
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int mlx5e_health_recover_channels(struct mlx5e_priv *priv);
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int mlx5e_health_report(struct mlx5e_priv *priv,
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struct devlink_health_reporter *reporter, char *err_str,
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struct mlx5e_err_ctx *err_ctx);
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#endif
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@ -2,14 +2,6 @@
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/* Copyright (c) 2019 Mellanox Technologies. */
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#include "health.h"
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#include "lib/eq.h"
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#define MLX5E_TX_REPORTER_PER_SQ_MAX_LEN 256
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struct mlx5e_tx_err_ctx {
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int (*recover)(struct mlx5e_txqsq *sq);
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struct mlx5e_txqsq *sq;
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};
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static int mlx5e_wait_for_sq_flush(struct mlx5e_txqsq *sq)
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{
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@ -39,42 +31,21 @@ static void mlx5e_reset_txqsq_cc_pc(struct mlx5e_txqsq *sq)
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sq->pc = 0;
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}
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static int mlx5e_sq_to_ready(struct mlx5e_txqsq *sq, int curr_state)
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static int mlx5e_tx_reporter_err_cqe_recover(void *ctx)
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{
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struct mlx5_core_dev *mdev = sq->channel->mdev;
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struct net_device *dev = sq->channel->netdev;
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struct mlx5e_modify_sq_param msp = {0};
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int err;
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msp.curr_state = curr_state;
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msp.next_state = MLX5_SQC_STATE_RST;
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err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
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if (err) {
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netdev_err(dev, "Failed to move sq 0x%x to reset\n", sq->sqn);
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return err;
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}
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memset(&msp, 0, sizeof(msp));
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msp.curr_state = MLX5_SQC_STATE_RST;
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msp.next_state = MLX5_SQC_STATE_RDY;
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err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
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if (err) {
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netdev_err(dev, "Failed to move sq 0x%x to ready\n", sq->sqn);
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return err;
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}
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return 0;
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}
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static int mlx5e_tx_reporter_err_cqe_recover(struct mlx5e_txqsq *sq)
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{
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struct mlx5_core_dev *mdev = sq->channel->mdev;
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struct net_device *dev = sq->channel->netdev;
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struct mlx5_core_dev *mdev;
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struct net_device *dev;
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struct mlx5e_txqsq *sq;
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u8 state;
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int err;
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sq = ctx;
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mdev = sq->channel->mdev;
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dev = sq->channel->netdev;
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if (!test_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state))
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return 0;
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err = mlx5_core_query_sq_state(mdev, sq->sqn, &state);
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if (err) {
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netdev_err(dev, "Failed to query SQ 0x%x state. err = %d\n",
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@ -96,7 +67,7 @@ static int mlx5e_tx_reporter_err_cqe_recover(struct mlx5e_txqsq *sq)
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* pending WQEs. SQ can safely reset the SQ.
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*/
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err = mlx5e_sq_to_ready(sq, state);
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err = mlx5e_health_sq_to_ready(sq->channel, sq->sqn);
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if (err)
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goto out;
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@ -111,102 +82,66 @@ out:
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return err;
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}
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static int mlx5_tx_health_report(struct devlink_health_reporter *tx_reporter,
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char *err_str,
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struct mlx5e_tx_err_ctx *err_ctx)
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{
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if (!tx_reporter) {
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netdev_err(err_ctx->sq->channel->netdev, err_str);
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return err_ctx->recover(err_ctx->sq);
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}
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return devlink_health_report(tx_reporter, err_str, err_ctx);
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}
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void mlx5e_reporter_tx_err_cqe(struct mlx5e_txqsq *sq)
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{
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char err_str[MLX5E_TX_REPORTER_PER_SQ_MAX_LEN];
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struct mlx5e_tx_err_ctx err_ctx = {0};
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struct mlx5e_priv *priv = sq->channel->priv;
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char err_str[MLX5E_REPORTER_PER_Q_MAX_LEN];
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struct mlx5e_err_ctx err_ctx = {0};
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err_ctx.sq = sq;
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err_ctx.recover = mlx5e_tx_reporter_err_cqe_recover;
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err_ctx.ctx = sq;
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err_ctx.recover = mlx5e_tx_reporter_err_cqe_recover;
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sprintf(err_str, "ERR CQE on SQ: 0x%x", sq->sqn);
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mlx5_tx_health_report(sq->channel->priv->tx_reporter, err_str,
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&err_ctx);
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mlx5e_health_report(priv, priv->tx_reporter, err_str, &err_ctx);
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}
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static int mlx5e_tx_reporter_timeout_recover(struct mlx5e_txqsq *sq)
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static int mlx5e_tx_reporter_timeout_recover(void *ctx)
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{
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struct mlx5_eq_comp *eq = sq->cq.mcq.eq;
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u32 eqe_count;
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struct mlx5_eq_comp *eq;
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struct mlx5e_txqsq *sq;
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int err;
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netdev_err(sq->channel->netdev, "EQ 0x%x: Cons = 0x%x, irqn = 0x%x\n",
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eq->core.eqn, eq->core.cons_index, eq->core.irqn);
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eqe_count = mlx5_eq_poll_irq_disabled(eq);
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if (!eqe_count) {
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sq = ctx;
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eq = sq->cq.mcq.eq;
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err = mlx5e_health_channel_eq_recover(eq, sq->channel);
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if (err)
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clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
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return -EIO;
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}
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netdev_err(sq->channel->netdev, "Recover %d eqes on EQ 0x%x\n",
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eqe_count, eq->core.eqn);
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sq->channel->stats->eq_rearm++;
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return 0;
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return err;
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}
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int mlx5e_reporter_tx_timeout(struct mlx5e_txqsq *sq)
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{
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char err_str[MLX5E_TX_REPORTER_PER_SQ_MAX_LEN];
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struct mlx5e_tx_err_ctx err_ctx;
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struct mlx5e_priv *priv = sq->channel->priv;
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char err_str[MLX5E_REPORTER_PER_Q_MAX_LEN];
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struct mlx5e_err_ctx err_ctx;
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err_ctx.sq = sq;
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err_ctx.recover = mlx5e_tx_reporter_timeout_recover;
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err_ctx.ctx = sq;
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err_ctx.recover = mlx5e_tx_reporter_timeout_recover;
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sprintf(err_str,
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"TX timeout on queue: %d, SQ: 0x%x, CQ: 0x%x, SQ Cons: 0x%x SQ Prod: 0x%x, usecs since last trans: %u\n",
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sq->channel->ix, sq->sqn, sq->cq.mcq.cqn, sq->cc, sq->pc,
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jiffies_to_usecs(jiffies - sq->txq->trans_start));
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return mlx5_tx_health_report(sq->channel->priv->tx_reporter, err_str,
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&err_ctx);
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return mlx5e_health_report(priv, priv->tx_reporter, err_str, &err_ctx);
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}
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/* state lock cannot be grabbed within this function.
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* It can cause a dead lock or a read-after-free.
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*/
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static int mlx5e_tx_reporter_recover_from_ctx(struct mlx5e_tx_err_ctx *err_ctx)
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static int mlx5e_tx_reporter_recover_from_ctx(struct mlx5e_err_ctx *err_ctx)
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{
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return err_ctx->recover(err_ctx->sq);
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}
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static int mlx5e_tx_reporter_recover_all(struct mlx5e_priv *priv)
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{
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int err = 0;
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rtnl_lock();
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mutex_lock(&priv->state_lock);
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if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
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goto out;
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err = mlx5e_safe_reopen_channels(priv);
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out:
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mutex_unlock(&priv->state_lock);
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rtnl_unlock();
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return err;
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return err_ctx->recover(err_ctx->ctx);
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}
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static int mlx5e_tx_reporter_recover(struct devlink_health_reporter *reporter,
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void *context)
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{
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struct mlx5e_priv *priv = devlink_health_reporter_priv(reporter);
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struct mlx5e_tx_err_ctx *err_ctx = context;
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struct mlx5e_err_ctx *err_ctx = context;
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return err_ctx ? mlx5e_tx_reporter_recover_from_ctx(err_ctx) :
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mlx5e_tx_reporter_recover_all(priv);
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mlx5e_health_recover_channels(priv);
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}
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static int
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@ -289,8 +224,9 @@ int mlx5e_reporter_tx_create(struct mlx5e_priv *priv)
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{
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struct devlink_health_reporter *reporter;
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struct mlx5_core_dev *mdev = priv->mdev;
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struct devlink *devlink = priv_to_devlink(mdev);
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struct devlink *devlink;
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devlink = priv_to_devlink(mdev);
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reporter =
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devlink_health_reporter_create(devlink, &mlx5_tx_reporter_ops,
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MLX5_REPORTER_TX_GRACEFUL_PERIOD,
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