1. 02 Mar, 2011 1 commit
  2. 01 Mar, 2011 3 commits
  3. 24 Feb, 2011 1 commit
    • David S. Miller's avatar
      ipv4: Rearrange how ip_route_newports() gets port keys. · dca8b089
      David S. Miller authored
      
      
      ip_route_newports() is the only place in the entire kernel that
      cares about the port members in the routing cache entry's lookup
      flow key.
      
      Therefore the only reason we store an entire flow inside of the
      struct rtentry is for this one special case.
      
      Rewrite ip_route_newports() such that:
      
      1) The caller passes in the original port values, so we don't need
         to use the rth->fl.fl_ip_{s,d}port values to remember them.
      
      2) The lookup flow is constructed by hand instead of being copied
         from the routing cache entry's flow.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dca8b089
  4. 17 Nov, 2010 1 commit
  5. 21 Oct, 2010 1 commit
  6. 11 Jun, 2010 1 commit
  7. 11 Apr, 2010 1 commit
  8. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      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: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  9. 15 Mar, 2010 1 commit
    • Gerrit Renker's avatar
      net-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisation · d14a0ebd
      Gerrit Renker authored
      
      
      dccp: fix panic caused by failed initialisation
      
      This fixes a kernel panic reported thanks to Andre Noll:
      
      if DCCP is compiled into the kernel and any out of the initialisation
      steps in net/dccp/proto.c:dccp_init() fail, a subsequent attempt to create
      a SOCK_DCCP socket will panic, since inet{,6}_create() are not prevented
      from creating DCCP sockets.
      
      This patch fixes the problem by propagating a failure in dccp_init() to
      dccp_v{4,6}_init_net(), and from there to dccp_v{4,6}_init(), so that the
      DCCP protocol is not made available if its initialisation fails.
      Signed-off-by: default avatarGerrit Renker <gerrit@erg.abdn.ac.uk>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d14a0ebd
  10. 18 Jan, 2010 1 commit
  11. 09 Dec, 2009 1 commit
  12. 03 Dec, 2009 1 commit
  13. 06 Nov, 2009 1 commit
  14. 19 Oct, 2009 1 commit
    • Eric Dumazet's avatar
      inet: rename some inet_sock fields · c720c7e8
      Eric Dumazet authored
      
      
      In order to have better cache layouts of struct sock (separate zones
      for rx/tx paths), we need this preliminary patch.
      
      Goal is to transfert fields used at lookup time in the first
      read-mostly cache line (inside struct sock_common) and move sk_refcnt
      to a separate cache line (only written by rx path)
      
      This patch adds inet_ prefix to daddr, rcv_saddr, dport, num, saddr,
      sport and id fields. This allows a future patch to define these
      fields as macros, like sk_refcnt, without name clashes.
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c720c7e8
  15. 15 Sep, 2009 1 commit
  16. 02 Sep, 2009 1 commit
  17. 03 Jun, 2009 2 commits
  18. 17 Nov, 2008 1 commit
    • Eric Dumazet's avatar
      net: Convert TCP & DCCP hash tables to use RCU / hlist_nulls · 3ab5aee7
      Eric Dumazet authored
      
      
      RCU was added to UDP lookups, using a fast infrastructure :
      - sockets kmem_cache use SLAB_DESTROY_BY_RCU and dont pay the
        price of call_rcu() at freeing time.
      - hlist_nulls permits to use few memory barriers.
      
      This patch uses same infrastructure for TCP/DCCP established
      and timewait sockets.
      
      Thanks to SLAB_DESTROY_BY_RCU, no slowdown for applications
      using short lived TCP connections. A followup patch, converting
      rwlocks to spinlocks will even speedup this case.
      
      __inet_lookup_established() is pretty fast now we dont have to
      dirty a contended cache line (read_lock/read_unlock)
      
      Only established and timewait hashtable are converted to RCU
      (bind table and listen table are still using traditional locking)
      Signed-off-by: default avatarEric Dumazet <dada1@cosmosbay.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3ab5aee7
  19. 05 Nov, 2008 2 commits
  20. 31 Oct, 2008 1 commit
  21. 07 Oct, 2008 1 commit
  22. 09 Sep, 2008 1 commit
  23. 04 Sep, 2008 2 commits
  24. 26 Jul, 2008 3 commits
  25. 17 Jul, 2008 2 commits
  26. 15 Jul, 2008 2 commits
  27. 10 Jun, 2008 1 commit
  28. 27 May, 2008 1 commit
  29. 14 Apr, 2008 3 commits