Eric Lee / smarc-fsl-linux-kernel

06 Dec, 2012

2 commits

  • c2d3babfa   bridge: implement multicast fast leave ... Browse Code »

    V3: make it a flag
    V2: make the toggle per-port

    Fast leave allows bridge to immediately stops the multicast
    traffic on the port receives IGMP Leave when IGMP snooping is enabled,
    no timeouts are observed.

    Cc: Herbert Xu
    Cc: Stephen Hemminger
    Cc: "David S. Miller"
    Signed-off-by: Cong Wang

    David S. Miller
     
  • 50426b592   bridge: implement multicast fast leave ... Browse Code »

    V2: make the toggle per-port

    Fast leave allows bridge to immediately stops the multicast
    traffic on the port receives IGMP Leave when IGMP snooping is enabled,
    no timeouts are observed.

    Cc: Herbert Xu
    Cc: Stephen Hemminger
    Cc: "David S. Miller"
    Signed-off-by: Cong Wang
    Signed-off-by: David S. Miller

    Amerigo Wang
     

19 Nov, 2012

1 commit

  • cb9905030   net: Allow userns root to control the network bridge code. ... Browse Code »

    Allow an unpriviled user who has created a user namespace, and then
    created a network namespace to effectively use the new network
    namespace, by reducing capable(CAP_NET_ADMIN) and
    capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns,
    CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls.

    Allow setting bridge paramters via sysfs.

    Allow all of the bridge ioctls:
    BRCTL_ADD_IF
    BRCTL_DEL_IF
    BRCTL_SET_BRDIGE_FORWARD_DELAY
    BRCTL_SET_BRIDGE_HELLO_TIME
    BRCTL_SET_BRIDGE_MAX_AGE
    BRCTL_SET_BRIDGE_AGING_TIME
    BRCTL_SET_BRIDGE_STP_STATE
    BRCTL_SET_BRIDGE_PRIORITY
    BRCTL_SET_PORT_PRIORITY
    BRCTL_SET_PATH_COST
    BRCTL_ADD_BRIDGE
    BRCTL_DEL_BRDIGE

    Signed-off-by: "Eric W. Biederman"
    Signed-off-by: David S. Miller

    Eric W. Biederman
     

15 Nov, 2012

3 commits

  • 1007dd1aa   bridge: add root port blocking ... Browse Code »

    This is Linux bridge implementation of root port guard.
    If BPDU is received from a leaf (edge) port, it should not
    be elected as root port.

    Why would you want to do this?
    If using STP on a bridge and the downstream bridges are not fully
    trusted; this prevents a hostile guest for rerouting traffic.

    Why not just use netfilter?
    Netfilter does not track of follow spanning tree decisions.
    It would be difficult and error prone to try and mirror STP
    resolution in netfilter module.

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

    stephen hemminger
     
  • a2e01a65c   bridge: implement BPDU blocking ... Browse Code »

    This is Linux bridge implementation of STP protection
    (Cisco BPDU guard/Juniper BPDU block). BPDU block disables
    the bridge port if a STP BPDU packet is received.

    Why would you want to do this?
    If running Spanning Tree on bridge, hostile devices on the network
    may send BPDU and cause network failure. Enabling bpdu block
    will detect and stop this.

    How to recover the port?
    The port will be restarted if link is brought down, or
    removed and reattached. For example:
    # ip li set dev eth0 down; ip li set dev eth0 up

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

    stephen hemminger
     
  • cd7537326   bridge: add template for bridge port flags ... Browse Code »

    Provide macro to build sysfs data structures and functions
    for accessing flag bits. If flag bits change do netlink
    notification.

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

    stephen hemminger
     

31 Jul, 2012

1 commit

05 Apr, 2011

1 commit

  • 14f98f258   bridge: range check STP parameters ... Browse Code »

    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

    stephen hemminger
     

16 May, 2010

1 commit

  • e0f43752a   bridge: update sysfs link names if port device names have changed ... Browse Code »

    Links for each port are created in sysfs using the device
    name, but this could be changed after being added to the
    bridge.

    As well as being unable to remove interfaces after this
    occurs (because userspace tools don't recognise the new
    name, and the kernel won't recognise the old name), adding
    another interface with the old name to the bridge will
    cause an error trying to create the sysfs link.

    This fixes the problem by listening for NETDEV_CHANGENAME
    notifications and renaming the link.

    https://bugzilla.kernel.org/show_bug.cgi?id=12743

    Signed-off-by: Simon Arlott
    Acked-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Simon Arlott
     

08 Mar, 2010

1 commit

  • 52cf25d0a   Driver core: Constify struct sysfs_ops in struct kobj_type ... Browse Code »

    Constify struct sysfs_ops.

    This is part of the ops structure constification
    effort started by Arjan van de Ven et al.

    Benefits of this constification:

    * prevents modification of data that is shared
    (referenced) by many other structure instances
    at runtime

    * detects/prevents accidental (but not intentional)
    modification attempts on archs that enforce
    read-only kernel data at runtime

    * potentially better optimized code as the compiler
    can assume that the const data cannot be changed

    * the compiler/linker move const data into .rodata
    and therefore exclude them from false sharing

    Signed-off-by: Emese Revfy
    Acked-by: David Teigland
    Acked-by: Matt Domsch
    Acked-by: Maciej Sosnowski
    Acked-by: Hans J. Koch
    Acked-by: Pekka Enberg
    Acked-by: Jens Axboe
    Acked-by: Stephen Hemminger
    Signed-off-by: Greg Kroah-Hartman

    Emese Revfy
     

28 Feb, 2010

1 commit

  • 0909e1175   bridge: Add multicast_router sysfs entries ... Browse Code »

    This patch allows the user to forcibly enable/disable ports as
    having multicast routers attached. A port with a multicast router
    will receive all multicast traffic.

    The value 0 disables it completely. The default is 1 which lets
    the system automatically detect the presence of routers (currently
    this is limited to picking up queries), and 2 means that the port
    will always receive all multicast traffic.

    Signed-off-by: Herbert Xu
    Signed-off-by: David S. Miller

    Herbert Xu
     

14 Aug, 2009

1 commit

  • 3982d3d28   net/bridge: Add 'hairpin' port forwarding mode ... Browse Code »

    This patch adds a 'hairpin' (also called 'reflective relay') mode
    port configuration to the Linux Ethernet bridge kernel module.
    A bridge supporting hairpin forwarding mode can send frames back
    out through the port the frame was received on.

    Hairpin mode is required to support basic VEPA (Virtual
    Ethernet Port Aggregator) capabilities.

    You can find additional information on VEPA here:
    http://tech.groups.yahoo.com/group/evb/
    http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf
    http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf

    An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode'
    is provided to allow configuring hairpin mode from userspace tools.

    Signed-off-by: Paul Congdon
    Signed-off-by: Anna Fischer
    Acked-by: Arnd Bergmann
    Signed-off-by: David S. Miller

    Fischer, Anna
     

19 May, 2009

1 commit

25 Jan, 2008

1 commit

12 Jul, 2007

1 commit

  • 7b595756e   sysfs: kill unnecessary attribute->owner ... Browse Code »

    sysfs is now completely out of driver/module lifetime game. After
    deletion, a sysfs node doesn't access anything outside sysfs proper,
    so there's no reason to hold onto the attribute owners. Note that
    often the wrong modules were accounted for as owners leading to
    accessing removed modules.

    This patch kills now unnecessary attribute->owner. Note that with
    this change, userland holding a sysfs node does not prevent the
    backing module from being unloaded.

    For more info regarding lifetime rule cleanup, please read the
    following message.

    http://article.gmane.org/gmane.linux.kernel/510293

    (tweaked by Greg to not delete the field just yet, to make it easier to
    merge things properly.)

    Signed-off-by: Tejun Heo
    Cc: Cornelia Huck
    Cc: Andrew Morton
    Signed-off-by: Greg Kroah-Hartman

    Tejun Heo
     

26 Apr, 2007

1 commit

08 Feb, 2007

1 commit

10 Feb, 2006

1 commit

12 Jan, 2006

1 commit

05 Jan, 2006

1 commit

19 Apr, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds