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| author | Willem de Bruijn <willemb@google.com> | 2014-08-04 22:11:48 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-05 16:35:54 -0700 |
| commit | e7fd2885385157d46c85f282fc6d7d297db43e1f (patch) | |
| tree | 14e9d00ed87b2b45882c8cb8dd1b9b4d221724f8 /net/socket.c | |
| parent | 09c2d251b70723650ba47e83571ff49281320f7c (diff) | |
| download | linux-e7fd2885385157d46c85f282fc6d7d297db43e1f.tar.bz2 | |
net-timestamp: SCHED timestamp on entering packet scheduler
Kernel transmit latency is often incurred in the packet scheduler.
Introduce a new timestamp on transmission just before entering the
scheduler. When data travels through multiple devices (bonding,
tunneling, ...) each device will export an individual timestamp.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c index 255d9b802723..3a2778d71631 100644 --- a/net/socket.c +++ b/net/socket.c @@ -617,6 +617,9 @@ void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags) *tx_flags |= SKBTX_HW_TSTAMP; if (sk->sk_tsflags & SOF_TIMESTAMPING_TX_SOFTWARE) *tx_flags |= SKBTX_SW_TSTAMP; + if (sk->sk_tsflags & SOF_TIMESTAMPING_TX_SCHED) + *tx_flags |= SKBTX_SCHED_TSTAMP; + if (sock_flag(sk, SOCK_WIFI_STATUS)) *tx_flags |= SKBTX_WIFI_STATUS; } |