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Tue, 07 Apr 2026 17:24:19 -0700 (PDT) Received: from localhost ([2a03:2880:31ff:38::]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4887e80a616sm1099700105e9.2.2026.04.07.17.24.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Apr 2026 17:24:18 -0700 (PDT) From: Mohsin Bashir To: netdev@vger.kernel.org Cc: alexanderduyck@fb.com, alok.a.tiwari@oracle.com, andrew+netdev@lunn.ch, davem@davemloft.net, dg573847474@gmail.com, edumazet@google.com, horms@kernel.org, jacob.e.keller@intel.com, kernel-team@meta.com, kuba@kernel.org, lee@trager.us, linux-kernel@vger.kernel.org, mohsin.bashr@gmail.com, pabeni@redhat.com Subject: [PATCH net] eth: fbnic: Use wake instead of start Date: Tue, 7 Apr 2026 17:24:15 -0700 Message-ID: <20260408002415.2963915-1-mohsin.bashr@gmail.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Mohsin Bashir fbnic_up() calls netif_tx_start_all_queues(), which only clears __QUEUE_STATE_DRV_XOFF. If qdisc backlog has accumulated on any TX queue before the reconfiguration (e.g. ring resize via ethtool -G), start does not call __netif_schedule() to kick the qdisc, so the pending backlog is never drained and the queue stalls. Switch to netif_tx_wake_all_queues(), which clears DRV_XOFF and also calls __netif_schedule() on every queue, ensuring any backlog that built up before the down/up cycle is promptly dequeued. Fixes: bc6107771bb4 ("eth: fbnic: Allocate a netdevice and napi vectors with queues") Signed-off-by: Mohsin Bashir Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/meta/fbnic/fbnic_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c index 3fa9d1910daa..8f331358c972 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c @@ -139,7 +139,7 @@ void fbnic_up(struct fbnic_net *fbn) /* Enable Tx/Rx processing */ fbnic_napi_enable(fbn); - netif_tx_start_all_queues(fbn->netdev); + netif_tx_wake_all_queues(fbn->netdev); fbnic_service_task_start(fbn); -- 2.52.0