On Wed, 2016-04-27 at 23:39 -0400, Soheil Hassas Yeganeh wrote: > From: Soheil Hassas Yeganeh <soh...@google.com> > > The SKBTX_ACK_TSTAMP flag is set in skb_shinfo->tx_flags when > the timestamp of the TCP acknowledgement should be reported on > error queue. Since accessing skb_shinfo is likely to incur a > cache-line miss at the time of receiving the ack, the > txstamp_ack bit was added in tcp_skb_cb, which is set iff > the SKBTX_ACK_TSTAMP flag is set for an skb. This makes > SKBTX_ACK_TSTAMP flag redundant. > > Remove the SKBTX_ACK_TSTAMP and instead use the txstamp_ack bit > everywhere. > > Note that this frees one bit in shinfo->tx_flags. > > Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com> > Acked-by: Martin KaFai Lau <ka...@fb.com> > Suggested-by: Willem de Bruijn <will...@google.com> > ---
Acked-by: Eric Dumazet <eduma...@google.com>
