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net/mlx5e: Fix a race with XSKICOSQ in XSK wakeup flow

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Add a missing spinlock around XSKICOSQ usage at the activation stage,
because there is a race between a configuration change and the
application calling sendto().

Fixes: db05815b36cb ("net/mlx5e: Add XSK zero-copy support")
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Maxim Mikityanskiy 2019-08-02 14:42:14 +03:00 committed by Saeed Mahameed
parent 2aafdf5a57
commit e0d57d9c7e
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
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@ -143,7 +143,10 @@ void mlx5e_activate_xsk(struct mlx5e_channel *c)
{
set_bit(MLX5E_RQ_STATE_ENABLED, &c->xskrq.state);
/* TX queue is created active. */
spin_lock(&c->xskicosq_lock);
mlx5e_trigger_irq(&c->xskicosq);
spin_unlock(&c->xskicosq_lock);
}
void mlx5e_deactivate_xsk(struct mlx5e_channel *c)