linux-toradex.git/net/bridge/br_private.h, branch T30_LinuxImageV2.0Alpha1_20130122

bridge: fix hang on removal of bridge via netlink

2011-10-19T03:24:16+00:00

Need to cleanup bridge device timers and ports when being bridge
device is being removed via netlink.

This fixes the problem of observed when doing:
 ip link add br0 type bridge
 ip link set dev eth1 master br0
 ip link set br0 up
 ip link del br0

which would cause br0 to hang in unregister_netdev because
of leftover reference count.

Reported-by: Sridhar Samudrala 
Signed-off-by: Stephen Hemminger 
Acked-by: Sridhar Samudrala 
Signed-off-by: David S. Miller

bridge: send proper message_age in config BPDU

2011-07-23T00:01:12+00:00

A bridge topology with three systems:

      +------+  +------+
      | A(2) |--| B(1) |
      +------+  +------+
           \    /
          +------+
          | C(3) |
          +------+

What is supposed to happen:
 * bridge with the lowest ID is elected root (for example: B)
 * C detects that A->C is higher cost path and puts in blocking state

What happens. Bridge with lowest id (B) is elected correctly as
root and things start out fine initially. But then config BPDU
doesn't get transmitted from A -> C. Because of that
the link from A-C is transistioned to the forwarding state.

The root cause of this is that the configuration messages
is generated with bogus message age, and dropped before
sending.

In the standardmessage_age is supposed to be:
  the time since the generation of the Configuration BPDU by
  the Root that instigated the generation of this Configuration BPDU.

Reimplement this by recording the timestamp (age + jiffies) when
recording config information. The old code incorrectly used the time
elapsed on the ageing timer which was incorrect.

See also:
  https://bugzilla.vyatta.com/show_bug.cgi?id=7164

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

bridge: convert br_features_recompute() to ndo_fix_features

2011-04-28T20:33:08+00:00

Note: netdev_update_features() needs only rtnl_lock as br->port_list
is only changed while holding it.

Signed-off-by: Michał Mirosław 
Signed-off-by: David S. Miller

bridge: range check STP parameters

2011-04-05T00:22:29+00:00

Apply restrictions on STP parameters based 802.1D 1998 standard.
   * Fixes missing locking in set path cost ioctl
   * Uses common code for both ioctl and sysfs

This is based on an earlier patch Sasikanth V but with overhaul.

Note:
1. It does NOT enforce the restriction on the relationship max_age and
   forward delay or hello time because in existing implementation these are
   set as independant operations.

2. If STP is disabled, there is no restriction on forward delay

3. No restriction on holding time because users use Linux code to act
   as hub or be sticky.

4. Although standard allow 0-255, Linux only allows 0-63 for port priority
   because more bits are reserved for port number.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

bridge: allow creating/deleting fdb entries via netlink

2011-04-05T00:22:28+00:00

Use RTM_NEWNEIGH and RTM_DELNEIGH to allow updating of entries
in bridge forwarding table. This allows manipulating static entries
which is not possible with existing tools.

Example (using bridge extensions to iproute2)
   # br fdb add 00:02:03:04:05:06 dev eth0

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

bridge: add netlink notification on forward entry changes

2011-04-05T00:22:27+00:00

This allows applications to query and monitor bridge forwarding
table in the same method used for neighbor table. The forward table
entries are returned in same structure format as used by the ioctl.
If more information is desired in future, the netlink method is
extensible.

Example (using bridge extensions to iproute2)
  # br monitor

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

bridge: track last used time in forwarding table

2011-04-05T00:22:26+00:00

Adds tracking the last used time in forwarding table.
Rename ageing_timer to updated to better describe it.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

bridge: notify applications if address of bridge device changes

2011-03-28T06:35:02+00:00

The mac address of the bridge device may be changed when a new interface
is added to the bridge. If this happens, then the bridge needs to call
the network notifiers to tickle any other systems that care. Since bridge
can be a module, this also means exporting the notifier function.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

net: introduce rx_handler results and logic around that

2011-03-16T19:53:54+00:00

This patch allows rx_handlers to better signalize what to do next to
it's caller. That makes skb->deliver_no_wcard no longer needed.

kernel-doc for rx_handler_result is taken from Nicolas' patch.

Signed-off-by: Jiri Pirko 
Reviewed-by: Nicolas de Pesloüan 
Signed-off-by: David S. Miller

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2011-02-20T03:17:35+00:00

Conflicts:
	Documentation/feature-removal-schedule.txt
	drivers/net/e1000e/netdev.c
	net/xfrm/xfrm_policy.c