@@ -254,6 +254,7 @@ struct cg_proto;
* @sk_wq: sock wait queue and async head
* @sk_rx_dst: receive input route used by early demux
* @sk_dst_cache: destination cache
+ * @sk_dst_pending_confirm: need to confirm neighbour
* @sk_policy: flow policy
* @sk_receive_queue: incoming packets
* @sk_wmem_alloc: transmit queue bytes committed
@@ -397,6 +398,7 @@ struct sock {
atomic_t sk_omem_alloc;
int sk_sndbuf;
struct sk_buff_head sk_write_queue;
+ __u32 sk_dst_pending_confirm;
kmemcheck_bitfield_begin(flags);
unsigned int sk_shutdown : 2,
sk_no_check_tx : 1,
@@ -1748,6 +1750,7 @@ static inline void dst_negative_advice(struct sock *sk)
if (ndst != dst) {
rcu_assign_pointer(sk->sk_dst_cache, ndst);
sk_tx_queue_clear(sk);
+ sk->sk_dst_pending_confirm = 0;
}
}
}
@@ -1758,6 +1761,7 @@ __sk_dst_set(struct sock *sk, struct dst_entry *dst)
struct dst_entry *old_dst;
sk_tx_queue_clear(sk);
+ sk->sk_dst_pending_confirm = 0;
/*
* This can be called while sk is owned by the caller only,
* with no state that can be checked in a rcu_dereference_check() cond
@@ -1773,6 +1777,7 @@ sk_dst_set(struct sock *sk, struct dst_entry *dst)
struct dst_entry *old_dst;
sk_tx_queue_clear(sk);
+ sk->sk_dst_pending_confirm = 0;
old_dst = xchg((__force struct dst_entry **)&sk->sk_dst_cache, dst);
dst_release(old_dst);
}
@@ -1793,6 +1798,12 @@ struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie);
struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie);
+static inline void sk_dst_confirm(struct sock *sk)
+{
+ if (!sk->sk_dst_pending_confirm)
+ sk->sk_dst_pending_confirm = 1;
+}
+
bool sk_mc_loop(struct sock *sk);
static inline bool sk_can_gso(const struct sock *sk)
@@ -532,6 +532,7 @@ struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
sk_tx_queue_clear(sk);
+ sk->sk_dst_pending_confirm = 0;
RCU_INIT_POINTER(sk->sk_dst_cache, NULL);
dst_release(dst);
return NULL;
@@ -1540,6 +1541,7 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
af_family_clock_key_strings[newsk->sk_family]);
newsk->sk_dst_cache = NULL;
+ newsk->sk_dst_pending_confirm = 0;
newsk->sk_wmem_queued = 0;
newsk->sk_forward_alloc = 0;
newsk->sk_send_head = NULL;