[TCP/DCCP]: Introduce net_xmit_eval
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>
diff --git a/include/net/ipip.h b/include/net/ipip.h
index f490c3c..8405885 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -35,7 +35,7 @@
ip_send_check(iph); \
\
err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output);\
- if (err == NET_XMIT_SUCCESS || err == NET_XMIT_CN) { \
+ if (net_xmit_eval(err) == 0) { \
stats->tx_bytes += pkt_len; \
stats->tx_packets++; \
} else { \