From ad22071b8e0e04761b325440d31183af166a6e7f Mon Sep 17 00:00:00 2001 From: Pavan Chebbi Date: Tue, 18 Jun 2024 14:53:13 -0700 Subject: [PATCH] bnxt_en: Restore PTP tx_avail count in case of skb_pad() error [ Upstream commit 1e7962114c10957fe4d10a15eb714578a394e90b ] The current code only restores PTP tx_avail count when we get DMA mapping errors. Fix it so that the PTP tx_avail count will be restored for both DMA mapping errors and skb_pad() errors. Otherwise PTP TX timestamp will not be available after a PTP packet hits the skb_pad() error. Fixes: 83bb623c968e ("bnxt_en: Transmit and retrieve packet timestamps") Reviewed-by: Andy Gospodarek Signed-off-by: Pavan Chebbi Signed-off-by: Michael Chan Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20240618215313.29631-4-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 724624737d09..58a7bb75506a 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -656,9 +656,6 @@ tx_done: return NETDEV_TX_OK; tx_dma_error: - if (BNXT_TX_PTP_IS_SET(lflags)) - atomic_inc(&bp->ptp_cfg->tx_avail); - last_frag = i; /* start back at beginning and unmap skb */ @@ -680,6 +677,8 @@ tx_dma_error: tx_free: dev_kfree_skb_any(skb); tx_kick_pending: + if (BNXT_TX_PTP_IS_SET(lflags)) + atomic_inc(&bp->ptp_cfg->tx_avail); if (txr->kick_pending) bnxt_txr_db_kick(bp, txr, txr->tx_prod); txr->tx_buf_ring[txr->tx_prod].skb = NULL;