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 2019-07-01 15:08:13 +03:00 committed by Saeed Mahameed
parent 06293ae4fa
commit c50de4af1d
4 changed files with 138 additions and 105 deletions

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@ -23,8 +23,9 @@ mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
#
mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
en_tx.o en_rx.o en_dim.o en_txrx.o en/xdp.o en_stats.o \
en_selftest.o en/port.o en/monitor_stats.o en/reporter_tx.o \
en/params.o en/xsk/umem.o en/xsk/setup.o en/xsk/rx.o en/xsk/tx.o
en_selftest.o en/port.o en/monitor_stats.o en/health.o \
en/reporter_tx.o en/params.o en/xsk/umem.o en/xsk/setup.o \
en/xsk/rx.o en/xsk/tx.o
#
# Netdev extra

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@ -0,0 +1,82 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Mellanox Technologies.
#include "health.h"
#include "lib/eq.h"
int mlx5e_health_sq_to_ready(struct mlx5e_channel *channel, u32 sqn)
{
struct mlx5_core_dev *mdev = channel->mdev;
struct net_device *dev = channel->netdev;
struct mlx5e_modify_sq_param msp = {};
int err;
msp.curr_state = MLX5_SQC_STATE_ERR;
msp.next_state = MLX5_SQC_STATE_RST;
err = mlx5e_modify_sq(mdev, sqn, &msp);
if (err) {
netdev_err(dev, "Failed to move sq 0x%x to reset\n", sqn);
return err;
}
memset(&msp, 0, sizeof(msp));
msp.curr_state = MLX5_SQC_STATE_RST;
msp.next_state = MLX5_SQC_STATE_RDY;
err = mlx5e_modify_sq(mdev, sqn, &msp);
if (err) {
netdev_err(dev, "Failed to move sq 0x%x to ready\n", sqn);
return err;
}
return 0;
}
int mlx5e_health_recover_channels(struct mlx5e_priv *priv)
{
int err = 0;
rtnl_lock();
mutex_lock(&priv->state_lock);
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
goto out;
err = mlx5e_safe_reopen_channels(priv);
out:
mutex_unlock(&priv->state_lock);
rtnl_unlock();
return err;
}
int mlx5e_health_channel_eq_recover(struct mlx5_eq_comp *eq, struct mlx5e_channel *channel)
{
u32 eqe_count;
netdev_err(channel->netdev, "EQ 0x%x: Cons = 0x%x, irqn = 0x%x\n",
eq->core.eqn, eq->core.cons_index, eq->core.irqn);
eqe_count = mlx5_eq_poll_irq_disabled(eq);
if (!eqe_count)
return -EIO;
netdev_err(channel->netdev, "Recovered %d eqes on EQ 0x%x\n",
eqe_count, eq->core.eqn);
channel->stats->eq_rearm++;
return 0;
}
int mlx5e_health_report(struct mlx5e_priv *priv,
struct devlink_health_reporter *reporter, char *err_str,
struct mlx5e_err_ctx *err_ctx)
{
if (!reporter) {
netdev_err(priv->netdev, err_str);
return err_ctx->recover(&err_ctx->ctx);
}
return devlink_health_report(reporter, err_str, err_ctx);
}

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@ -11,4 +11,18 @@ void mlx5e_reporter_tx_destroy(struct mlx5e_priv *priv);
void mlx5e_reporter_tx_err_cqe(struct mlx5e_txqsq *sq);
int mlx5e_reporter_tx_timeout(struct mlx5e_txqsq *sq);
#define MLX5E_REPORTER_PER_Q_MAX_LEN 256
struct mlx5e_err_ctx {
int (*recover)(void *ctx);
void *ctx;
};
int mlx5e_health_sq_to_ready(struct mlx5e_channel *channel, u32 sqn);
int mlx5e_health_channel_eq_recover(struct mlx5_eq_comp *eq, struct mlx5e_channel *channel);
int mlx5e_health_recover_channels(struct mlx5e_priv *priv);
int mlx5e_health_report(struct mlx5e_priv *priv,
struct devlink_health_reporter *reporter, char *err_str,
struct mlx5e_err_ctx *err_ctx);
#endif

View File

@ -2,14 +2,6 @@
/* Copyright (c) 2019 Mellanox Technologies. */
#include "health.h"
#include "lib/eq.h"
#define MLX5E_TX_REPORTER_PER_SQ_MAX_LEN 256
struct mlx5e_tx_err_ctx {
int (*recover)(struct mlx5e_txqsq *sq);
struct mlx5e_txqsq *sq;
};
static int mlx5e_wait_for_sq_flush(struct mlx5e_txqsq *sq)
{
@ -39,42 +31,21 @@ static void mlx5e_reset_txqsq_cc_pc(struct mlx5e_txqsq *sq)
sq->pc = 0;
}
static int mlx5e_sq_to_ready(struct mlx5e_txqsq *sq, int curr_state)
static int mlx5e_tx_reporter_err_cqe_recover(void *ctx)
{
struct mlx5_core_dev *mdev = sq->channel->mdev;
struct net_device *dev = sq->channel->netdev;
struct mlx5e_modify_sq_param msp = {0};
int err;
msp.curr_state = curr_state;
msp.next_state = MLX5_SQC_STATE_RST;
err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
if (err) {
netdev_err(dev, "Failed to move sq 0x%x to reset\n", sq->sqn);
return err;
}
memset(&msp, 0, sizeof(msp));
msp.curr_state = MLX5_SQC_STATE_RST;
msp.next_state = MLX5_SQC_STATE_RDY;
err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
if (err) {
netdev_err(dev, "Failed to move sq 0x%x to ready\n", sq->sqn);
return err;
}
return 0;
}
static int mlx5e_tx_reporter_err_cqe_recover(struct mlx5e_txqsq *sq)
{
struct mlx5_core_dev *mdev = sq->channel->mdev;
struct net_device *dev = sq->channel->netdev;
struct mlx5_core_dev *mdev;
struct net_device *dev;
struct mlx5e_txqsq *sq;
u8 state;
int err;
sq = ctx;
mdev = sq->channel->mdev;
dev = sq->channel->netdev;
if (!test_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state))
return 0;
err = mlx5_core_query_sq_state(mdev, sq->sqn, &state);
if (err) {
netdev_err(dev, "Failed to query SQ 0x%x state. err = %d\n",
@ -96,7 +67,7 @@ static int mlx5e_tx_reporter_err_cqe_recover(struct mlx5e_txqsq *sq)
* pending WQEs. SQ can safely reset the SQ.
*/
err = mlx5e_sq_to_ready(sq, state);
err = mlx5e_health_sq_to_ready(sq->channel, sq->sqn);
if (err)
goto out;
@ -111,102 +82,66 @@ static int mlx5e_tx_reporter_err_cqe_recover(struct mlx5e_txqsq *sq)
return err;
}
static int mlx5_tx_health_report(struct devlink_health_reporter *tx_reporter,
char *err_str,
struct mlx5e_tx_err_ctx *err_ctx)
{
if (!tx_reporter) {
netdev_err(err_ctx->sq->channel->netdev, err_str);
return err_ctx->recover(err_ctx->sq);
}
return devlink_health_report(tx_reporter, err_str, err_ctx);
}
void mlx5e_reporter_tx_err_cqe(struct mlx5e_txqsq *sq)
{
char err_str[MLX5E_TX_REPORTER_PER_SQ_MAX_LEN];
struct mlx5e_tx_err_ctx err_ctx = {0};
struct mlx5e_priv *priv = sq->channel->priv;
char err_str[MLX5E_REPORTER_PER_Q_MAX_LEN];
struct mlx5e_err_ctx err_ctx = {0};
err_ctx.sq = sq;
err_ctx.recover = mlx5e_tx_reporter_err_cqe_recover;
err_ctx.ctx = sq;
err_ctx.recover = mlx5e_tx_reporter_err_cqe_recover;
sprintf(err_str, "ERR CQE on SQ: 0x%x", sq->sqn);
mlx5_tx_health_report(sq->channel->priv->tx_reporter, err_str,
&err_ctx);
mlx5e_health_report(priv, priv->tx_reporter, err_str, &err_ctx);
}
static int mlx5e_tx_reporter_timeout_recover(struct mlx5e_txqsq *sq)
static int mlx5e_tx_reporter_timeout_recover(void *ctx)
{
struct mlx5_eq_comp *eq = sq->cq.mcq.eq;
u32 eqe_count;
struct mlx5_eq_comp *eq;
struct mlx5e_txqsq *sq;
int err;
netdev_err(sq->channel->netdev, "EQ 0x%x: Cons = 0x%x, irqn = 0x%x\n",
eq->core.eqn, eq->core.cons_index, eq->core.irqn);
eqe_count = mlx5_eq_poll_irq_disabled(eq);
if (!eqe_count) {
sq = ctx;
eq = sq->cq.mcq.eq;
err = mlx5e_health_channel_eq_recover(eq, sq->channel);
if (err)
clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
return -EIO;
}
netdev_err(sq->channel->netdev, "Recover %d eqes on EQ 0x%x\n",
eqe_count, eq->core.eqn);
sq->channel->stats->eq_rearm++;
return 0;
return err;
}
int mlx5e_reporter_tx_timeout(struct mlx5e_txqsq *sq)
{
char err_str[MLX5E_TX_REPORTER_PER_SQ_MAX_LEN];
struct mlx5e_tx_err_ctx err_ctx;
struct mlx5e_priv *priv = sq->channel->priv;
char err_str[MLX5E_REPORTER_PER_Q_MAX_LEN];
struct mlx5e_err_ctx err_ctx;
err_ctx.sq = sq;
err_ctx.recover = mlx5e_tx_reporter_timeout_recover;
err_ctx.ctx = sq;
err_ctx.recover = mlx5e_tx_reporter_timeout_recover;
sprintf(err_str,
"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",
sq->channel->ix, sq->sqn, sq->cq.mcq.cqn, sq->cc, sq->pc,
jiffies_to_usecs(jiffies - sq->txq->trans_start));
return mlx5_tx_health_report(sq->channel->priv->tx_reporter, err_str,
&err_ctx);
return mlx5e_health_report(priv, priv->tx_reporter, err_str, &err_ctx);
}
/* state lock cannot be grabbed within this function.
* It can cause a dead lock or a read-after-free.
*/
static int mlx5e_tx_reporter_recover_from_ctx(struct mlx5e_tx_err_ctx *err_ctx)
static int mlx5e_tx_reporter_recover_from_ctx(struct mlx5e_err_ctx *err_ctx)
{
return err_ctx->recover(err_ctx->sq);
}
static int mlx5e_tx_reporter_recover_all(struct mlx5e_priv *priv)
{
int err = 0;
rtnl_lock();
mutex_lock(&priv->state_lock);
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
goto out;
err = mlx5e_safe_reopen_channels(priv);
out:
mutex_unlock(&priv->state_lock);
rtnl_unlock();
return err;
return err_ctx->recover(err_ctx->ctx);
}
static int mlx5e_tx_reporter_recover(struct devlink_health_reporter *reporter,
void *context)
{
struct mlx5e_priv *priv = devlink_health_reporter_priv(reporter);
struct mlx5e_tx_err_ctx *err_ctx = context;
struct mlx5e_err_ctx *err_ctx = context;
return err_ctx ? mlx5e_tx_reporter_recover_from_ctx(err_ctx) :
mlx5e_tx_reporter_recover_all(priv);
mlx5e_health_recover_channels(priv);
}
static int
@ -289,8 +224,9 @@ int mlx5e_reporter_tx_create(struct mlx5e_priv *priv)
{
struct devlink_health_reporter *reporter;
struct mlx5_core_dev *mdev = priv->mdev;
struct devlink *devlink = priv_to_devlink(mdev);
struct devlink *devlink;
devlink = priv_to_devlink(mdev);
reporter =
devlink_health_reporter_create(devlink, &mlx5_tx_reporter_ops,
MLX5_REPORTER_TX_GRACEFUL_PERIOD,