From 84f9307c5da84a7c8513e7607dc8427d2cbd63e3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 30 Nov 2011 19:00:53 +0000 Subject: ipv4: use a 64bit load/store in output path gcc compiler is smart enough to use a single load/store if we memcpy(dptr, sptr, 8) on x86_64, regardless of CONFIG_CC_OPTIMIZE_FOR_SIZE In IP header, daddr immediately follows saddr, this wont change in the future. We only need to make sure our flowi4 (saddr,daddr) fields wont break the rule. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/flow.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/flow.h b/include/net/flow.h index a09447749e2d..9192d690b562 100644 --- a/include/net/flow.h +++ b/include/net/flow.h @@ -59,8 +59,11 @@ struct flowi4 { #define flowi4_proto __fl_common.flowic_proto #define flowi4_flags __fl_common.flowic_flags #define flowi4_secid __fl_common.flowic_secid - __be32 daddr; + + /* (saddr,daddr) must be grouped, same order as in IP header */ __be32 saddr; + __be32 daddr; + union flowi_uli uli; #define fl4_sport uli.ports.sport #define fl4_dport uli.ports.dport -- cgit v1.2.3-59-g8ed1b