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igb: Only call skb_tx_timestamp after descriptors are ready

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Currently, skb_tx_timestamp() is being called before the Tx
descriptors are prepared in igb_xmit_frame_ring(), which happens
during either the igb_tso() or igb_tx_csum() calls.

Given that now the skb->tstamp might be used to carry the timestamp
for SO_TXTIME, we must only call skb_tx_timestamp() after the
information has been copied into the Tx descriptors.

Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesus Sanchez-Palencia 2018-07-03 15:42:58 -07:00 committed by David S. Miller
parent 8080e6ab4e
commit 1b9231e7e1
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/igb/igb_main.c
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@ -6033,8 +6033,6 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
}
}
skb_tx_timestamp(skb);
if (skb_vlan_tag_present(skb)) {
tx_flags |= IGB_TX_FLAGS_VLAN;
tx_flags |= (skb_vlan_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
@ -6050,6 +6048,8 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
else if (!tso)
igb_tx_csum(tx_ring, first);
skb_tx_timestamp(skb);
if (igb_tx_map(tx_ring, first, hdr_len))
goto cleanup_tx_tstamp;