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eth: mlx4: don't try to complete XDP frames in netpoll

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[ Upstream commit 8fdeafd66edaf420ea0063a1f13442fe3470fe70 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jakub Kicinski
2025-02-12 17:06:33 -08:00
committed by Greg Kroah-Hartman
parent 242272c953
commit d8afc25580
1 changed files with 2 additions and 0 deletions
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drivers/net/ethernet/mellanox/mlx4/en_tx.c
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@@ -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);