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xfrm: add rcu grace period in xfrm_policy_destroy()

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We will soon switch sk->sk_policy[] to RCU protection,
as SYNACK packets are sent while listener socket is not locked.

This patch simply adds RCU grace period before struct xfrm_policy
freeing, and the corresponding rcu_head in struct xfrm_policy.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2015-12-08 07:22:01 -08:00
committed by David S. Miller
parent b0a8d1a0b6
commit 56f047305d
2 changed files with 10 additions and 2 deletions
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include/net/xfrm.h
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@@ -548,6 +548,7 @@ struct xfrm_policy {
u16 family;
struct xfrm_sec_ctx *security;
struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH];
struct rcu_head rcu;
};
static inline struct net *xp_net(const struct xfrm_policy *xp)