[PATCH net v2]bonding: fix send_peer_notif data truncation

[liaichun]

send_peer_notif is u8, the value of this parameter is obtained from
 u8*int, it's easy to be truncated. And in practice, more than u8(256)
  characters are used.

Fixes: 07a4ddec3ce9 ("bonding: add an option to specify a delay between peer 
notifications")
Signed-off-by: Aichun Li <liaic...@huawei.com>
---
 include/net/bonding.h | 2 +-
 drivers/net/bonding/bond_main.c | 4 ++--
 2 file changed, 3 insertion(+), 3 deletion(-)

diff --git a/include/net/bonding.h b/include/net/bonding.h index 
0960d9af7b8e..65394566d556 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -215,7 +215,7 @@ struct bonding {
         */
        spinlock_t mode_lock;
        spinlock_t stats_lock;
-       u8       send_peer_notif;
+       u32      send_peer_notif;
        u8       igmp_retrans;
 #ifdef CONFIG_PROC_FS
        struct   proc_dir_entry *proc_entry;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c 
index b7db57e6c96a..336460538135 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -880,8 +880,8 @@ void bond_change_active_slave(struct bonding *bond, struct 
slave *new_active)
 
                        if (netif_running(bond->dev)) {
                                bond->send_peer_notif =
-                                       bond->params.num_peer_notif *
-                                       max(1, bond->params.peer_notif_delay);
+                                       (u32)(bond->params.num_peer_notif *
+                                       max(1, bond->params.peer_notif_delay));
                                should_notify_peers =
                                        bond_should_notify_peers(bond);
                        }
--
2.19.1