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net: ena: Relocate skb_tx_timestamp() to improve time stamping accuracy

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Move skb_tx_timestamp() closer to the actual time the driver sends the
packets to the device.

Signed-off-by: Osama Abboud <osamaabb@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
David Arinzon 2024-01-30 09:53:50 +00:00 committed by Paolo Abeni
parent 071271f39c
commit 70c9360390
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/amazon/ena/ena_netdev.c
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@ -2614,8 +2614,6 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (unlikely(rc))
goto error_drop_packet;
skb_tx_timestamp(skb);
next_to_use = tx_ring->next_to_use;
req_id = tx_ring->free_ids[next_to_use];
tx_info = &tx_ring->tx_buffer_info[req_id];
@ -2679,6 +2677,8 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
}
skb_tx_timestamp(skb);
if (netif_xmit_stopped(txq) || !netdev_xmit_more())
/* trigger the dma engine. ena_ring_tx_doorbell()
* calls a memory barrier inside it.