From: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx> High XDP load triggers the netdev watchdog: |NETDEV WATCHDOG: enp3s0 (igc): transmit queue 2 timed out The reason is the Tx queue transmission start (txq->trans_start) is not updated in XDP code path. Therefore, add it for all XDP transmission functions. Signed-off-by: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx> Tested-by: Naama Meir <naamax.meir@xxxxxxxxxxxxxxx> Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx> --- drivers/net/ethernet/intel/igc/igc_main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 38d113b48111..c5ef1edcf548 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -2411,6 +2411,8 @@ static int igc_xdp_xmit_back(struct igc_adapter *adapter, struct xdp_buff *xdp) nq = txring_txq(ring); __netif_tx_lock(nq, cpu); + /* Avoid transmit queue timeout since we share it with the slow path */ + txq_trans_cond_update(nq); res = igc_xdp_init_tx_descriptor(ring, xdpf); __netif_tx_unlock(nq); return res; @@ -2829,6 +2831,9 @@ static void igc_xdp_xmit_zc(struct igc_ring *ring) __netif_tx_lock(nq, cpu); + /* Avoid transmit queue timeout since we share it with the slow path */ + txq_trans_cond_update(nq); + budget = igc_desc_unused(ring); while (xsk_tx_peek_desc(pool, &xdp_desc) && budget--) { @@ -6354,6 +6359,9 @@ static int igc_xdp_xmit(struct net_device *dev, int num_frames, __netif_tx_lock(nq, cpu); + /* Avoid transmit queue timeout since we share it with the slow path */ + txq_trans_cond_update(nq); + drops = 0; for (i = 0; i < num_frames; i++) { int err; -- 2.38.1