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xfrm: policy: use rcu versions for iteration and list add/del

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This is required once we allow lockless readers.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal 2016-08-11 15:17:52 +02:00 committed by Steffen Klassert
parent d737a58055
commit a5eefc1df6
1 changed files with 7 additions and 7 deletions
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14
net/xfrm/xfrm_policy.c
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@ -426,14 +426,14 @@ redo:
h = __addr_hash(&pol->selector.daddr, &pol->selector.saddr,
pol->family, nhashmask, dbits, sbits);
if (!entry0) {
hlist_del(&pol->bydst);
hlist_add_head(&pol->bydst, ndsttable+h);
hlist_del_rcu(&pol->bydst);
hlist_add_head_rcu(&pol->bydst, ndsttable + h);
h0 = h;
} else {
if (h != h0)
continue;
hlist_del(&pol->bydst);
hlist_add_behind(&pol->bydst, entry0);
hlist_del_rcu(&pol->bydst);
hlist_add_behind_rcu(&pol->bydst, entry0);
}
entry0 = &pol->bydst;
}
@ -1106,7 +1106,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
read_lock_bh(&net->xfrm.xfrm_policy_lock);
chain = policy_hash_direct(net, daddr, saddr, family, dir);
ret = NULL;
hlist_for_each_entry(pol, chain, bydst) {
hlist_for_each_entry_rcu(pol, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
if (err) {
if (err == -ESRCH)
@ -1122,7 +1122,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
}
}
chain = &net->xfrm.policy_inexact[dir];
hlist_for_each_entry(pol, chain, bydst) {
hlist_for_each_entry_rcu(pol, chain, bydst) {
if ((pol->priority >= priority) && ret)
break;
@ -1271,7 +1271,7 @@ static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
/* Socket policies are not hashed. */
if (!hlist_unhashed(&pol->bydst)) {
hlist_del(&pol->bydst);
hlist_del_rcu(&pol->bydst);
hlist_del(&pol->byidx);
}