bonding: Fix LACPDU rx_dropped commit.

I applied the wrong version of Jiri's bonding fix in commit
13a8e0c8cdb43982372bd6c65fb26839c8fd8ce9 ("bonding: don't increase
rx_dropped after processing LACPDUs")

I applied v3, which introduces warnings I asked him to fix,
instead of v4 which properly takes care of those issues.

This inter-diffs such that the warnings are now gone.

Signed-off-by: David S. Miller <[e-mail]>

drivers/net/bonding/bond_alb.c

···
 	_unlock_rx_hashtbl_bh(bond);
 }
 
-static void rlb_arp_recv(struct sk_buff *skb, struct bonding *bond,
+static int rlb_arp_recv(struct sk_buff *skb, struct bonding *bond,
 			 struct slave *slave)
 {
 	struct arp_pkt *arp;
 
 	if (skb->protocol != cpu_to_be16(ETH_P_ARP))
-		return;
+		goto out;
 
 	arp = (struct arp_pkt *) skb->data;
 	if (!arp) {
 		pr_debug("Packet has no ARP data\n");
-		return;
+		goto out;
 	}
 
 	if (!pskb_may_pull(skb, arp_hdr_len(bond->dev)))
-		return;
+		goto out;
 
 	if (skb->len < sizeof(struct arp_pkt)) {
 		pr_debug("Packet is too small to be an ARP\n");
-		return;
+		goto out;
 	}
 
 	if (arp->op_code == htons(ARPOP_REPLY)) {
···
 		rlb_update_entry_from_arp(bond, arp);
 		pr_debug("Server received an ARP Reply from client\n");
 	}
+out:
+	return RX_HANDLER_ANOTHER;
 }
 
 /* Caller must hold bond lock for read */

drivers/net/bonding/bonding.h

···
 	struct   slave *primary_slave;
 	bool     force_primary;
 	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
-	void     (*recv_probe)(struct sk_buff *, struct bonding *,
+	int     (*recv_probe)(struct sk_buff *, struct bonding *,
 			       struct slave *);
 	rwlock_t lock;
 	rwlock_t curr_slave_lock;