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| author |   Eric Dumazet <edumazet@google.com> | 2018-10-19 19:11:26 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-20 01:01:28 -0700 |
| commit | 4c16128b6271e70c8743178e90cccee147858503 (patch) | |
| tree | ae8fad1930523a8807ff9ece83b230ff224628ff /drivers/net | |
| parent | net: ethernet: lpc_eth: add device and device node local variables (diff) | |
| download | linux-dev-4c16128b6271e70c8743178e90cccee147858503.tar.xz linux-dev-4c16128b6271e70c8743178e90cccee147858503.zip | |
net: loopback: clear skb->tstamp before netif_rx()
At least UDP / TCP stacks can now cook skbs with a tstamp using
MONOTONIC base (or arbitrary values with SCM_TXTIME)
Since loopback driver does not call (directly or indirectly)
skb_scrub_packet(), we need to clear skb->tstamp so that
net_timestamp_check() can eventually resample the time,
using ktime_get_real().
Fixes: 80b14dee2bea ("net: Add a new socket option for a future transmit time.")
Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/loopback.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index a7207fa7e451..2df7f60fe052 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -69,6 +69,10 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb, int len; skb_tx_timestamp(skb); + + /* do not fool net_timestamp_check() with various clock bases */ + skb->tstamp = 0; + skb_orphan(skb); /* Before queueing this packet to netif_rx(), |