diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2025-02-13 04:06:33 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-19 02:32:20 +0300 |
| commit | 8fdeafd66edaf420ea0063a1f13442fe3470fe70 (patch) | |
| tree | 913501df5a8ac69842ec8a9cb277440189649c7d | |
| parent | 8533b14b3d65ee666ba31254787c1bdaee56d95a (diff) | |
| download | linux-8fdeafd66edaf420ea0063a1f13442fe3470fe70.tar.xz | |
eth: mlx4: don't try to complete XDP frames in netpoll
mlx4 doesn't support ndo_xdp_xmit / XDP_REDIRECT and wasn't
using page pool until now, so it could run XDP completions
in netpoll (NAPI budget == 0) just fine. Page pool has calling
context requirements, make sure we don't try to call it from
what is potentially HW IRQ context.
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250213010635.1354034-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_tx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c index 1ddb11cb25f9..6e077d202827 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c @@ -450,6 +450,8 @@ int mlx4_en_process_tx_cq(struct net_device *dev, if (unlikely(!priv->port_up)) return 0; + if (unlikely(!napi_budget) && cq->type == TX_XDP) + return 0; netdev_txq_bql_complete_prefetchw(ring->tx_queue); |