23 Jul, 2011

2 commits

  • Some minor cleanups that won't impact code:
    1. Remove inline from non-critical functions; compiler will most
    likely inline them anyway.
    2. Make function args const where possible.
    3. Whitespace cleanup

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

    stephen hemminger
     
  • If the message_age is already greater than the max_age, then the
    BPDU is bogus. Linux won't generate BPDU, but conformance tester
    or buggy implementation might.

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

    stephen hemminger
     

05 Jan, 2011

1 commit


04 Jan, 2011

1 commit

  • commit bf9ae5386bca8836c16e69ab8fdbe46767d7452a
    (llc: use dev_hard_header) removed the
    skb_reset_mac_header call from llc_mac_hdr_init.

    This seems fine itself, but br_send_bpdu() invokes ebtables LOCAL_OUT.

    We oops in ebt_basic_match() because it assumes eth_hdr(skb) returns
    a meaningful result.

    Cc: acme@ghostprotocols.net
    References: https://bugzilla.kernel.org/show_bug.cgi?id=24532
    Signed-off-by: Florian Westphal
    Signed-off-by: David S. Miller

    Florian Westphal
     

16 Nov, 2010

1 commit

  • The macro br_port_exists() is not enough protection when only
    RCU is being used. There is a tiny race where other CPU has cleared port
    handler hook, but is bridge port flag might still be set.

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

    stephen hemminger
     

03 Aug, 2010

1 commit


29 Jul, 2010

1 commit

  • Long ago, when bridge was converted to RCU, rcu lock was equivalent
    to having preempt disabled. RCU has changed a lot since then and
    bridge code was still assuming the since transmit was called with
    bottom half disabled, it was RCU safe.

    Signed-off-by: Stephen Hemminger
    Tested-by: Johannes Berg
    Signed-off-by: David S. Miller

    stephen hemminger
     

16 Jun, 2010

1 commit


20 Apr, 2010

1 commit


30 Mar, 2010

1 commit

  • …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

25 Mar, 2010

1 commit

  • The first argument to NF_HOOK* is an nfproto since quite some time.
    Commit v2.6.27-2457-gfdc9314 was the first to practically start using
    the new names. Do that now for the remaining NF_HOOK calls.

    The semantic patch used was:
    //
    @@
    @@
    (NF_HOOK
    |NF_HOOK_THRESH
    )(
    -PF_BRIDGE,
    +NFPROTO_BRIDGE,
    ...)

    @@
    @@
    NF_HOOK(
    -PF_INET6,
    +NFPROTO_IPV6,
    ...)

    @@
    @@
    NF_HOOK(
    -PF_INET,
    +NFPROTO_IPV4,
    ...)
    //

    Signed-off-by: Jan Engelhardt

    Jan Engelhardt
     

09 Sep, 2008

1 commit

  • Bridge as netdevice doesn't cross netns boundaries.

    Bridge ports and bridge itself live in same netns.

    Notifiers are fixed.

    netns propagated from userspace socket for setup and teardown.

    Signed-off-by: Alexey Dobriyan
    Acked-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Alexey Dobriyan
     

20 Jul, 2008

1 commit


06 Jul, 2008

1 commit


12 Jun, 2008

1 commit


03 May, 2008

1 commit


26 Mar, 2008

1 commit


11 Oct, 2007

2 commits

  • This patch modifies every packet receive function
    registered with dev_add_pack() to drop packets if they
    are not from the initial network namespace.

    This should ensure that the various network stacks do
    not receive packets in a anything but the initial network
    namespace until the code has been converted and is ready
    for them.

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

    Eric W. Biederman
     
  • Hopefully captured all single statement cases under net/. I'm
    not too sure if there is some policy about #includes that are
    "guaranteed" (ie., in the current tree) to be available through
    some other #included header, so I just added linux/kernel.h to
    each changed file that didn't #include it previously.

    Signed-off-by: Ilpo Järvinen
    Signed-off-by: David S. Miller

    Ilpo Järvinen
     

26 Apr, 2007

1 commit

  • This patchset based on work by Aji_Srinivas@emc.com provides allows
    spanning tree to be controled from userspace. Like hotplug, it
    uses call_usermodehelper when spanning tree is enabled so there
    is no visible API change. If call to start usermode STP fails
    it falls back to existing kernel STP.

    Signed-off-by: Stephen Hemminger

    Stephen Hemminger
     

11 Feb, 2007

1 commit


18 Sep, 2006

1 commit


25 Mar, 2006

1 commit

  • I see lots of
    kernel unaligned access to 0xa0000001009dbb6f, ip=0xa000000100811591
    kernel unaligned access to 0xa0000001009dbb6b, ip=0xa0000001008115c1
    kernel unaligned access to 0xa0000001009dbb6d, ip=0xa0000001008115f1
    messages in my logs on IA64 when using the ethernet bridge with 2.6.16.

    Appended is a patch to fix them.

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

    Peter Chubb
     

21 Mar, 2006

4 commits

  • The bridge code can use existing LLC output code when building
    spanning tree protocol packets.

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

    Stephen Hemminger
     
  • Bridge's communicate with each other using Spanning Tree Protocol
    over a standard multicast address. There are times when testing or
    layering bridges over existing topologies or tunnels, when it is
    useful to use alternative multicast addresses for STP packets.

    The 802.1d standard has some unused addresses, that can be used for this.
    This patch is restrictive in that it only allows one of the possible
    addresses in the standard.

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

    Stephen Hemminger
     
  • Use LLC for the receive path of Spanning Tree Protocol packets.
    This allows link local multicast packets to be received by
    other protocols (if they care), and uses the existing LLC
    code to get STP packets back into bridge code.

    The bridge multicast address is also checked, so bridges using
    other link local multicast addresses are ignored. This allows
    for use of different multicast addresses to define separate STP
    domains.

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

    Stephen Hemminger
     
  • Cleanup the get/set of bridge timer value in the packets.
    It is clearer not to bury the conversion in macro.

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

    Stephen Hemminger
     

10 Feb, 2006

1 commit


30 May, 2005

1 commit

  • Avoid poisoning of the bridge forwarding table by frames that have been
    dropped by filtering. This prevents spoofed source addresses on hostile
    side of bridge from causing packet leakage, a small but possible security
    risk.

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

    Stephen Hemminger
     

17 Apr, 2005

1 commit

  • 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