diff options
| author | Jiri Pirko <jpirko@redhat.com> | 2010-06-15 06:50:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-15 11:48:58 -0700 |
| commit | f350a0a87374418635689471606454abc7beaa3a (patch) | |
| tree | c8210542a9848f6b5953b58d2ba1dbfb11715f14 /net/bridge/br_if.c | |
| parent | a35e2c1b6d90544b3c688783869817628e5f9607 (diff) | |
| download | blackbird-op-linux-f350a0a87374418635689471606454abc7beaa3a.tar.gz blackbird-op-linux-f350a0a87374418635689471606454abc7beaa3a.zip | |
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>
Diffstat (limited to 'net/bridge/br_if.c')
| -rw-r--r-- | net/bridge/br_if.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 0d142ed0bbe3..c03d2c3ff03e 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -147,8 +147,9 @@ static void del_nbp(struct net_bridge_port *p) list_del_rcu(&p->list); + dev->priv_flags &= ~IFF_BRIDGE_PORT; + netdev_rx_handler_unregister(dev); - rcu_assign_pointer(dev->br_port, NULL); br_multicast_del_port(p); @@ -400,7 +401,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) return -ELOOP; /* Device is already being bridged */ - if (dev->br_port != NULL) + if (br_port_exists(dev)) return -EBUSY; /* No bridging devices that dislike that (e.g. wireless) */ @@ -431,11 +432,11 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) if (br_netpoll_info(br) && ((err = br_netpoll_enable(p)))) goto err3; - rcu_assign_pointer(dev->br_port, p); - - err = netdev_rx_handler_register(dev, br_handle_frame, NULL); + err = netdev_rx_handler_register(dev, br_handle_frame, p); if (err) - goto err4; + goto err3; + + dev->priv_flags |= IFF_BRIDGE_PORT; dev_disable_lro(dev); @@ -457,8 +458,6 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) kobject_uevent(&p->kobj, KOBJ_ADD); return 0; -err4: - rcu_assign_pointer(dev->br_port, NULL); err3: sysfs_remove_link(br->ifobj, p->dev->name); err2: @@ -477,9 +476,13 @@ put_back: /* called with RTNL */ int br_del_if(struct net_bridge *br, struct net_device *dev) { - struct net_bridge_port *p = dev->br_port; + struct net_bridge_port *p; + + if (!br_port_exists(dev)) + return -EINVAL; - if (!p || p->br != br) + p = br_port_get(dev); + if (p->br != br) return -EINVAL; del_nbp(p); |
