bonding: convert first/last slave logic to use neighbours
For that, use netdev_adjacent_get_private(list_head) on bond's lower
neighbour list members. Also, add a small macro - bond_slave_list(bond),
which returns the bond list via neighbour list.
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 170c7fc..3eb464c 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -72,19 +72,24 @@
res; })
/* slave list primitives */
-#define bond_has_slaves(bond) !list_empty(&(bond)->dev->adj_list.lower)
+#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
+
+#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
#define bond_to_slave(ptr) list_entry(ptr, struct slave, list)
/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
#define bond_first_slave(bond) \
- list_first_entry_or_null(&(bond)->slave_list, struct slave, list)
+ (bond_has_slaves(bond) ? \
+ netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
+ NULL)
#define bond_last_slave(bond) \
- (list_empty(&(bond)->slave_list) ? NULL : \
- bond_to_slave((bond)->slave_list.prev))
+ (bond_has_slaves(bond) ? \
+ netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
+ NULL)
-#define bond_is_first_slave(bond, pos) ((pos)->list.prev == &(bond)->slave_list)
-#define bond_is_last_slave(bond, pos) ((pos)->list.next == &(bond)->slave_list)
+#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
+#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
/* Since bond_first/last_slave can return NULL, these can return NULL too */
#define bond_next_slave(bond, pos) \