1. 17 7月, 2012 1 次提交
    • D
      net: Pass optional SKB and SK arguments to dst_ops->{update_pmtu,redirect}() · 6700c270
      David S. Miller 提交于
      This will be used so that we can compose a full flow key.
      
      Even though we have a route in this context, we need more.  In the
      future the routes will be without destination address, source address,
      etc. keying.  One ipv4 route will cover entire subnets, etc.
      
      In this environment we have to have a way to possess persistent storage
      for redirects and PMTU information.  This persistent storage will exist
      in the FIB tables, and that's why we'll need to be able to rebuild a
      full lookup flow key here.  Using that flow key will do a fib_lookup()
      and create/update the persistent entry.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6700c270
  2. 16 7月, 2012 1 次提交
  3. 12 7月, 2012 3 次提交
  4. 24 4月, 2012 1 次提交
    • E
      net: add a limit parameter to sk_add_backlog() · f545a38f
      Eric Dumazet 提交于
      sk_add_backlog() & sk_rcvqueues_full() hard coded sk_rcvbuf as the
      memory limit. We need to make this limit a parameter for TCP use.
      
      No functional change expected in this patch, all callers still using the
      old sk_rcvbuf limit.
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Cc: Neal Cardwell <ncardwell@google.com>
      Cc: Tom Herbert <therbert@google.com>
      Cc: Maciej Żenczykowski <maze@google.com>
      Cc: Yuchung Cheng <ycheng@google.com>
      Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
      Cc: Rick Jones <rick.jones2@hp.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f545a38f
  5. 12 12月, 2011 1 次提交
  6. 17 6月, 2011 1 次提交
  7. 23 4月, 2011 1 次提交
  8. 20 4月, 2011 2 次提交
  9. 31 3月, 2011 1 次提交
  10. 08 3月, 2011 1 次提交
  11. 06 5月, 2010 1 次提交
    • V
      sctp: Fix a race between ICMP protocol unreachable and connect() · 50b5d6ad
      Vlad Yasevich 提交于
      ICMP protocol unreachable handling completely disregarded
      the fact that the user may have locked the socket.  It proceeded
      to destroy the association, even though the user may have
      held the lock and had a ref on the association.  This resulted
      in the following:
      
      Attempt to release alive inet socket f6afcc00
      
      =========================
      [ BUG: held lock freed! ]
      -------------------------
      somenu/2672 is freeing memory f6afcc00-f6afcfff, with a lock still held
      there!
       (sk_lock-AF_INET){+.+.+.}, at: [<c122098a>] sctp_connect+0x13/0x4c
      1 lock held by somenu/2672:
       #0:  (sk_lock-AF_INET){+.+.+.}, at: [<c122098a>] sctp_connect+0x13/0x4c
      
      stack backtrace:
      Pid: 2672, comm: somenu Not tainted 2.6.32-telco #55
      Call Trace:
       [<c1232266>] ? printk+0xf/0x11
       [<c1038553>] debug_check_no_locks_freed+0xce/0xff
       [<c10620b4>] kmem_cache_free+0x21/0x66
       [<c1185f25>] __sk_free+0x9d/0xab
       [<c1185f9c>] sk_free+0x1c/0x1e
       [<c1216e38>] sctp_association_put+0x32/0x89
       [<c1220865>] __sctp_connect+0x36d/0x3f4
       [<c122098a>] ? sctp_connect+0x13/0x4c
       [<c102d073>] ? autoremove_wake_function+0x0/0x33
       [<c12209a8>] sctp_connect+0x31/0x4c
       [<c11d1e80>] inet_dgram_connect+0x4b/0x55
       [<c11834fa>] sys_connect+0x54/0x71
       [<c103a3a2>] ? lock_release_non_nested+0x88/0x239
       [<c1054026>] ? might_fault+0x42/0x7c
       [<c1054026>] ? might_fault+0x42/0x7c
       [<c11847ab>] sys_socketcall+0x6d/0x178
       [<c10da994>] ? trace_hardirqs_on_thunk+0xc/0x10
       [<c1002959>] syscall_call+0x7/0xb
      
      This was because the sctp_wait_for_connect() would aqcure the socket
      lock and then proceed to release the last reference count on the
      association, thus cause the fully destruction path to finish freeing
      the socket.
      
      The simplest solution is to start a very short timer in case the socket
      is owned by user.  When the timer expires, we can do some verification
      and be able to do the release properly.
      Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      50b5d6ad
  12. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit 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: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  13. 06 3月, 2010 2 次提交
  14. 09 6月, 2009 1 次提交
  15. 16 2月, 2009 2 次提交
  16. 23 1月, 2009 1 次提交
    • V
      sctp: Fix another socket race during accept/peeloff · ae53b5bd
      Vlad Yasevich 提交于
      There is a race between sctp_rcv() and sctp_accept() where we
      have moved the association from the listening socket to the
      accepted socket, but sctp_rcv() processing cached the old
      socket and continues to use it.
      
      The easy solution is to check for the socket mismatch once we've
      grabed the socket lock.  If we hit a mis-match, that means
      that were are currently holding the lock on the listening socket,
      but the association is refrencing a newly accepted socket.  We need
      to drop the lock on the old socket and grab the lock on the new one.
      
      A more proper solution might be to create accepted sockets when
      the new association is established, similar to TCP.  That would
      eliminate the race for 1-to-1 style sockets, but it would still
      existing for 1-to-many sockets where a user wished to peeloff an
      association.  For now, we'll live with this easy solution as
      it addresses the problem.
      Reported-by: NMichal Hocko <mhocko@suse.cz>
      Reported-by: NKarsten Keil <kkeil@suse.de>
      Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ae53b5bd
  17. 23 10月, 2008 1 次提交
  18. 19 7月, 2008 1 次提交
  19. 17 7月, 2008 1 次提交
  20. 15 7月, 2008 1 次提交
  21. 20 6月, 2008 1 次提交
    • W
      sctp: Validate Initiate Tag when handling ICMP message · 7115e632
      Wei Yongjun 提交于
      This patch add to validate initiate tag and chunk type if verification
      tag is 0 when handling ICMP message.
      
      RFC 4960, Appendix C. ICMP Handling
      
      ICMP6) An implementation MUST validate that the Verification Tag
      contained in the ICMP message matches the Verification Tag of the peer.
      If the Verification Tag is not 0 and does NOT match, discard the ICMP
      message.  If it is 0 and the ICMP message contains enough bytes to
      verify that the chunk type is an INIT chunk and that the Initiate Tag
      matches the tag of the peer, continue with ICMP7.  If the ICMP message
      is too short or the chunk type or the Initiate Tag does not match,
      silently discard the packet.
      Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com>
      Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7115e632
  22. 10 4月, 2008 1 次提交
  23. 18 3月, 2008 1 次提交
  24. 06 3月, 2008 1 次提交
  25. 05 2月, 2008 1 次提交
  26. 29 1月, 2008 2 次提交
  27. 10 11月, 2007 1 次提交
  28. 11 10月, 2007 1 次提交
  29. 26 9月, 2007 1 次提交
  30. 01 8月, 2007 1 次提交
  31. 14 6月, 2007 2 次提交
  32. 26 4月, 2007 2 次提交