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xfrm: policy: use hlist rcu variants on insert

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bydst table/list lookups use rcu, so insertions must use rcu versions.

Fixes: a7c44247f7 ("xfrm: policy: make xfrm_policy_lookup_bytype lockless")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal
2018-10-10 18:02:21 +02:00
committed by Steffen Klassert
parent 9f7e43da6a
commit 9dffff200f
1 changed files with 4 additions and 4 deletions
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8
net/xfrm/xfrm_policy.c
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@@ -632,9 +632,9 @@ static void xfrm_hash_rebuild(struct work_struct *work)
break; break;
} }
if (newpos) if (newpos)
hlist_add_behind(&policy->bydst, newpos); hlist_add_behind_rcu(&policy->bydst, newpos);
else else
hlist_add_head(&policy->bydst, chain); hlist_add_head_rcu(&policy->bydst, chain);
} }
spin_unlock_bh(&net->xfrm.xfrm_policy_lock); spin_unlock_bh(&net->xfrm.xfrm_policy_lock);
@@ -774,9 +774,9 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
break; break;
} }
if (newpos) if (newpos)
hlist_add_behind(&policy->bydst, newpos); hlist_add_behind_rcu(&policy->bydst, newpos);
else else
hlist_add_head(&policy->bydst, chain); hlist_add_head_rcu(&policy->bydst, chain);
__xfrm_policy_link(policy, dir); __xfrm_policy_link(policy, dir);
/* After previous checking, family can either be AF_INET or AF_INET6 */ /* After previous checking, family can either be AF_INET or AF_INET6 */