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Miller" , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Przemek Kitszel , Andrew Lunn , Eric Dumazet , Paolo Abeni , bpf@vger.kernel.org (open list:XDP (eXpress Data Path)), intel-wired-lan@lists.osuosl.org (moderated list:INTEL ETHERNET DRIVERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH iwl-net] igc: Fix XSK queue NAPI ID mapping Date: Wed, 5 Mar 2025 18:09:00 +0000 Message-ID: <20250305180901.128286-1-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In commit b65969856d4f ("igc: Link queues to NAPI instances"), the XSK queues were incorrectly unmapped from their NAPI instances. After discussion on the mailing list and the introduction of a test to codify the expected behavior, we can see that the unmapping causes the check_xsk test to fail: NETIF=3Denp86s0 ./tools/testing/selftests/drivers/net/queues.py [...] # Check| ksft_eq(q.get('xsk', None), {}, # Check failed None !=3D {} xsk attr on queue we configured not ok 4 queues.check_xsk After this commit, the test passes: ok 4 queues.check_xsk Note that the test itself is only in net-next, so I tested this change by applying it to my local net-next tree, booting, and running the test. Cc: stable@vger.kernel.org Fixes: b65969856d4f ("igc: Link queues to NAPI instances") Signed-off-by: Joe Damato Reviewed-by: Gerhard Engleder Tested-by: Mor Bar-Gabay --- drivers/net/ethernet/intel/igc/igc_xdp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_xdp.c b/drivers/net/etherne= t/intel/igc/igc_xdp.c index 13bbd3346e01..869815f48ac1 100644 --- a/drivers/net/ethernet/intel/igc/igc_xdp.c +++ b/drivers/net/ethernet/intel/igc/igc_xdp.c @@ -86,7 +86,6 @@ static int igc_xdp_enable_pool(struct igc_adapter *adapte= r, napi_disable(napi); } =20 - igc_set_queue_napi(adapter, queue_id, NULL); set_bit(IGC_RING_FLAG_AF_XDP_ZC, &rx_ring->flags); set_bit(IGC_RING_FLAG_AF_XDP_ZC, &tx_ring->flags); =20 @@ -136,7 +135,6 @@ static int igc_xdp_disable_pool(struct igc_adapter *ada= pter, u16 queue_id) xsk_pool_dma_unmap(pool, IGC_RX_DMA_ATTR); clear_bit(IGC_RING_FLAG_AF_XDP_ZC, &rx_ring->flags); clear_bit(IGC_RING_FLAG_AF_XDP_ZC, &tx_ring->flags); - igc_set_queue_napi(adapter, queue_id, napi); =20 if (needs_reset) { napi_enable(napi); base-commit: 3c9231ea6497dfc50ac0ef69fff484da27d0df66 --=20 2.34.1