On Tue, Mar 6, 2018 at 8:12 PM, Jesus Sanchez-Palencia <jesus.sanchez-palen...@intel.com> wrote: > From: Richard Cochran <rcoch...@linutronix.de> > > For raw packets, copy the desired future transmit time from the CMSG > cookie into the skb. > > Signed-off-by: Richard Cochran <rcoch...@linutronix.de> > Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palen...@intel.com> > --- > net/ipv4/raw.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c > index 54648d20bf0f..8e05970ba7c4 100644 > --- a/net/ipv4/raw.c > +++ b/net/ipv4/raw.c > @@ -381,6 +381,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 > *fl4, > > skb->priority = sk->sk_priority; > skb->mark = sk->sk_mark; > + skb->tstamp = sockc->transmit_time;
This implements the feature only for the hdrincl case and silently drops the txtime request on other raw sockets (incl. corked). At the least, should probably fail if sockc.transmit_time is non-zero and the hdrincl path is not taken. Or implement by passing through inet_cork and set in __ip_make_skb. Then be careful to ignore the field for other protocols, where it may be uninitialized.
