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xfrm: Add a secpath_set helper.

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Add a new helper to set the secpath to the skb.
This avoids code duplication, as this is used
in multiple places.

Signed-off-by: Steffen Klassert <[email protected]>
This commit is contained in:
Steffen Klassert 2017-02-15 09:39:24 +01:00
commit b0fcee825c
3 changed files with 26 additions and 24 deletions
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15
net/ipv6/xfrm6_input.c
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@ -69,18 +69,9 @@ int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
struct xfrm_state *x = NULL;
int i = 0;
/* Allocate new secpath or COW existing one. */
if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {
struct sec_path *sp;
sp = secpath_dup(skb->sp);
if (!sp) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINERROR);
goto drop;
}
if (skb->sp)
secpath_put(skb->sp);
skb->sp = sp;
if (secpath_set(skb)) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINERROR);
goto drop;
}
if (1 + skb->sp->len == XFRM_MAX_DEPTH) {