[IPSEC]: Move state lock into x->type->output

This patch releases the lock on the state before calling x->type->output.
It also adds the lock to the spots where they're currently needed.

Most of those places (all except mip6) are expected to disappear with
async crypto.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 7261c29898cb..6475baca63d2 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -172,7 +172,9 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
         len = ((char *)hao - (char *)dstopt) + sizeof(*hao);
 
         memcpy(&hao->addr, &iph->saddr, sizeof(hao->addr));
+        spin_lock_bh(&x->lock);
         memcpy(&iph->saddr, x->coaddr, sizeof(iph->saddr));
+        spin_unlock_bh(&x->lock);
 
         BUG_TRAP(len == x->props.header_len);
         dstopt->hdrlen = (x->props.header_len >> 3) - 1;
@@ -381,7 +383,9 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
         BUG_TRAP(rt2->rt_hdr.hdrlen == 2);
 
         memcpy(&rt2->addr, &iph->daddr, sizeof(rt2->addr));
+        spin_lock_bh(&x->lock);
         memcpy(&iph->daddr, x->coaddr, sizeof(iph->daddr));
+        spin_unlock_bh(&x->lock);
 
         return 0;
 }