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[XFRM]: fix softirq-unsafe xfrm typemap->lock use

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xfrm typemap->lock may be used in softirq context, so all write_lock()
uses must be softirq-safe.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ingo Molnar 2006-04-28 15:23:59 -07:00 committed by David S. Miller
parent a76e07acd0
commit 8dff7c2970
1 changed files with 4 additions and 4 deletions
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8
net/xfrm/xfrm_policy.c
View file

@ -57,12 +57,12 @@ int xfrm_register_type(struct xfrm_type *type, unsigned short family)
return -EAFNOSUPPORT;
typemap = afinfo->type_map;
write_lock(&typemap->lock);
write_lock_bh(&typemap->lock);
if (likely(typemap->map[type->proto] == NULL))
typemap->map[type->proto] = type;
else
err = -EEXIST;
write_unlock(&typemap->lock);
write_unlock_bh(&typemap->lock);
xfrm_policy_put_afinfo(afinfo);
return err;
}
@ -78,12 +78,12 @@ int xfrm_unregister_type(struct xfrm_type *type, unsigned short family)
return -EAFNOSUPPORT;
typemap = afinfo->type_map;
write_lock(&typemap->lock);
write_lock_bh(&typemap->lock);
if (unlikely(typemap->map[type->proto] != type))
err = -ENOENT;
else
typemap->map[type->proto] = NULL;
write_unlock(&typemap->lock);
write_unlock_bh(&typemap->lock);
xfrm_policy_put_afinfo(afinfo);
return err;
}