[IPSEC]: Make get_acqseq() xfrm_state.c:xfrm_get_acqseq().

include/net/xfrm.h

@@ -744,6 +744,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
 struct xfrm_policy *xfrm_policy_delete(int dir, struct xfrm_selector *sel);
 struct xfrm_policy *xfrm_policy_byid(int dir, u32 id, int delete);
 void xfrm_policy_flush(void);
+u32 xfrm_get_acqseq(void);
 void xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
 struct xfrm_state * xfrm_find_acq(u8 mode, u16 reqid, u8 proto, 
 				  xfrm_address_t *daddr, xfrm_address_t *saddr, 

net/ipv4/xfrm_state.c

@@ -428,7 +428,18 @@ struct xfrm_state * xfrm_find_acq_byseq(u32 seq)
 	spin_unlock_bh(&xfrm_state_lock);
 	return NULL;
 }
-
+ 
+u32 xfrm_get_acqseq(void)
+{
+	u32 res;
+	static u32 acqseq;
+	static spinlock_t acqseq_lock = SPIN_LOCK_UNLOCKED;
+
+	spin_lock_bh(&acqseq_lock);
+	res = (++acqseq ? : ++acqseq);
+	spin_unlock_bh(&acqseq_lock);
+	return res;
+}
 
 void
 xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi)

net/ipv4/xfrm_user.c

@@ -949,19 +949,6 @@ static int xfrm_send_notify(struct xfrm_state *x, int hard)
 	return netlink_broadcast(xfrm_nl, skb, 0, XFRMGRP_EXPIRE, GFP_ATOMIC);
 }
 
-/* XXX Make this xfrm_state.c:xfrm_get_acqseq() */
-static u32 get_acqseq(void)
-{
-	u32 res;
-	static u32 acqseq;
-	static spinlock_t acqseq_lock = SPIN_LOCK_UNLOCKED;
-
-	spin_lock_bh(&acqseq_lock);
-	res = (++acqseq ? : ++acqseq);
-	spin_unlock_bh(&acqseq_lock);
-	return res;
-}
-
 static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
 			 struct xfrm_tmpl *xt, struct xfrm_policy *xp,
 			 int dir)
@@ -969,7 +956,7 @@ static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
 	struct xfrm_user_acquire *ua;
 	struct nlmsghdr *nlh;
 	unsigned char *b = skb->tail;
-	__u32 seq = get_acqseq();
+	__u32 seq = xfrm_get_acqseq();
 
 	nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_ACQUIRE,
 			sizeof(*ua));

net/netsyms.c

@@ -316,6 +316,7 @@ EXPORT_SYMBOL(xfrm_replay_check);
 EXPORT_SYMBOL(xfrm_replay_advance);
 EXPORT_SYMBOL(xfrm_check_selectors);
 EXPORT_SYMBOL(__secpath_destroy);
+EXPORT_SYMBOL(xfrm_get_acqseq);
 EXPORT_SYMBOL(xfrm_parse_spi);
 EXPORT_SYMBOL(xfrm4_rcv);
 EXPORT_SYMBOL(xfrm_register_type);