ipv6: Introduce ip6_flow_hdr() to fill version, tclass and flowlabel.
authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>
Sun, 13 Jan 2013 05:01:39 +0000 (05:01 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 14 Jan 2013 01:17:13 +0000 (20:17 -0500)
commit3e4e4c1f2da66b29ee9379ca29f8dd620c2b5a1f
treeee6dfd76e5949b84b8c25136a4563925d0033cfa
parent00494be4546432a11d62ebfeca363256ff9822b5
ipv6: Introduce ip6_flow_hdr() to fill version, tclass and flowlabel.

This is not only for readability but also for optimization.
What we do here is to build the 32bit word at the beginning of the ipv6
header (the "ip6_flow" virtual member of struct ip6_hdr in RFC3542) and
we do not need to read the tclass portion of the target buffer.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/ipv6.h
net/ipv6/ip6_gre.c
net/ipv6/ip6_output.c
net/ipv6/ip6_tunnel.c
net/ipv6/netfilter/ip6t_REJECT.c