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bnxt_en: Restore PTP tx_avail count in case of skb_pad() error

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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: 83bb623c96 ("bnxt_en: Transmit and retrieve packet timestamps")
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240618215313.29631-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavan Chebbi 2024-06-18 14:53:13 -07:00 committed by Jakub Kicinski
parent b7bfcb4c7c
commit 1e7962114c
1 changed files with 2 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View file

@ -732,9 +732,6 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
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 */
@ -756,6 +753,8 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
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;