bridge: use rx_handler_data pointer to store net_bridge_port pointer
Register net_bridge_port pointer as rx_handler data pointer. As br_port is
removed from struct net_device, another netdev priv_flag is added to indicate
the device serves as a bridge port. Also rcuized pointers are now correctly
dereferenced in br_fdb.c and in netfilter parts.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 59ca00e..bcc102e 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -140,11 +140,14 @@
return 1;
if (FWINV2(ebt_dev_check(e->out, out), EBT_IOUT))
return 1;
- if ((!in || !in->br_port) ? 0 : FWINV2(ebt_dev_check(
- e->logical_in, in->br_port->br->dev), EBT_ILOGICALIN))
+ /* rcu_read_lock()ed by nf_hook_slow */
+ if (in && br_port_exists(in) &&
+ FWINV2(ebt_dev_check(e->logical_in, br_port_get_rcu(in)->br->dev),
+ EBT_ILOGICALIN))
return 1;
- if ((!out || !out->br_port) ? 0 : FWINV2(ebt_dev_check(
- e->logical_out, out->br_port->br->dev), EBT_ILOGICALOUT))
+ if (out && br_port_exists(out) &&
+ FWINV2(ebt_dev_check(e->logical_out, br_port_get_rcu(out)->br->dev),
+ EBT_ILOGICALOUT))
return 1;
if (e->bitmask & EBT_SOURCEMAC) {