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Code Issues Releases Wiki Activity

net/mlx5e: Acquire RTNL lock before RQs/SQs activation/deactivation

Browse source 
netif_queue_set_napi asserts whether RTNL lock is held if
the netdev is initialized.

Acquire the RTNL lock before activating or deactivating
RQs/SQs if the lock has not been held before in the flow.

Fixes: f25e7b8263 ("net/mlx5e: link NAPI instances to queues and IRQs")
Cc: Joe Damato <jdamato@fastly.com>
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240411115444.374475-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Carolina Jubran 2024-04-11 14:54:43 +03:00 committed by Jakub Kicinski
parent 6c685bdb9e
commit fdce06bda7
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
View file

@ -108,7 +108,10 @@ static int mlx5e_tx_reporter_err_cqe_recover(void *ctx)
mlx5e_reset_txqsq_cc_pc(sq);
sq->stats->recover++;
clear_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state);
rtnl_lock();
mlx5e_activate_txqsq(sq);
rtnl_unlock();
if (sq->channel)
mlx5e_trigger_napi_icosq(sq->channel);
else
@ -179,12 +182,16 @@ static int mlx5e_tx_reporter_ptpsq_unhealthy_recover(void *ctx)
carrier_ok = netif_carrier_ok(netdev);
netif_carrier_off(netdev);
rtnl_lock();
mlx5e_deactivate_priv_channels(priv);
rtnl_unlock();
mlx5e_ptp_close(chs->ptp);
err = mlx5e_ptp_open(priv, &chs->params, chs->c[0]->lag_port, &chs->ptp);
rtnl_lock();
mlx5e_activate_priv_channels(priv);
rtnl_unlock();
/* return carrier back if needed */
if (carrier_ok)