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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)
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>

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