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net: macb driver, check for SKBTX_HW_TSTAMP

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Make sure SKBTX_HW_TSTAMP (i.e. SOF_TIMESTAMPING_TX_HARDWARE) has been
enabled for this skb. It does fix the issue where normal socks that
aren't expecting a timestamp will not wake up on select, but when a
user does want a SOF_TIMESTAMPING_TX_HARDWARE it does work.

Signed-off-by: Paul Thomas <pthomas8589@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Thomas 2019-04-08 15:37:54 -04:00 committed by David S. Miller
parent 738de00cda
commit a62520473f
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/cadence/macb_main.c
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@ -898,7 +898,9 @@ static void macb_tx_interrupt(struct macb_queue *queue)
/* First, update TX stats if needed */
if (skb) {
if (gem_ptp_do_txstamp(queue, skb, desc) == 0) {
if (unlikely(skb_shinfo(skb)->tx_flags &
SKBTX_HW_TSTAMP) &&
gem_ptp_do_txstamp(queue, skb, desc) == 0) {
/* skb now belongs to timestamp buffer
* and will be removed later
*/