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[TCP/DCCP]: Introduce net_xmit_eval

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Throughout the TCP/DCCP (and tunnelling) code, it often happens that the
return code of a transmit function needs to be tested against NET_XMIT_CN
which is a value that does not indicate a strict error condition.

This patch uses a macro for these recurring situations which is consistent
with the already existing macro net_xmit_errno, saving on duplicated code.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Gerrit Renker 2006-11-14 11:21:36 -02:00 • committed by David S. Miller
parent 1ed176a801
commit b9df3cb8cf
9 changed files with 14 additions and 30 deletions
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8
net/ipv4/tcp_output.c
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@ -484,13 +484,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
tcp_enter_cwr(sk);
/* NET_XMIT_CN is special. It does not guarantee,
* that this packet is lost. It tells that device
* is about to start to drop packets or already
* drops some packets of the same priority and
* invokes us to send less aggressively.
*/
return err == NET_XMIT_CN ? 0 : err;
return net_xmit_eval(err);
#undef SYSCTL_FLAG_TSTAMPS
#undef SYSCTL_FLAG_WSCALE