tree 23aca36cb198fa486dbb67e7ee28191e1f597db3
parent 1ee5e6676bccbf7a035d8d35c143f1a61e602198
author Li RongQing <roy.qing.li@gmail.com> 1429693794 +0800
committer Steffen Klassert <steffen.klassert@secunet.com> 1429781766 +0200

xfrm: optimise the use of walk list header in xfrm_policy/state_walk

The walk from input is the list header, and marked as dead, and will
be skipped in loop.

list_first_entry() can be used to return the true usable value from
walk if walk is not empty

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>