1. 05 4月, 2011 1 次提交
  2. 13 3月, 2011 4 次提交
  3. 02 3月, 2011 1 次提交
    • D
      ipv6: Consolidate route lookup sequences. · 68d0c6d3
      David S. Miller 提交于
      Route lookups follow a general pattern in the ipv6 code wherein
      we first find the non-IPSEC route, potentially override the
      flow destination address due to ipv6 options settings, and then
      finally make an IPSEC search using either xfrm_lookup() or
      __xfrm_lookup().
      
      __xfrm_lookup() is used when we want to generate a blackhole route
      if the key manager needs to resolve the IPSEC rules (in this case
      -EREMOTE is returned and the original 'dst' is left unchanged).
      
      Otherwise plain xfrm_lookup() is used and when asynchronous IPSEC
      resolution is necessary, we simply fail the lookup completely.
      
      All of these cases are encapsulated into two routines,
      ip6_dst_lookup_flow and ip6_sk_dst_lookup_flow.  The latter of which
      handles unconnected UDP datagram sockets.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      68d0c6d3
  4. 21 2月, 2011 1 次提交
  5. 11 2月, 2011 1 次提交
  6. 14 12月, 2010 1 次提交
    • D
      net: Abstract default ADVMSS behind an accessor. · 0dbaee3b
      David S. Miller 提交于
      Make all RTAX_ADVMSS metric accesses go through a new helper function,
      dst_metric_advmss().
      
      Leave the actual default metric as "zero" in the real metric slot,
      and compute the actual default value dynamically via a new dst_ops
      AF specific callback.
      
      For stacked IPSEC routes, we use the advmss of the path which
      preserves existing behavior.
      
      Unlike ipv4/ipv6, DecNET ties the advmss to the mtu and thus updates
      advmss on pmtu updates.  This inconsistency in advmss handling
      results in more raw metric accesses than I wish we ended up with.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      0dbaee3b
  7. 11 12月, 2010 1 次提交
  8. 03 12月, 2010 2 次提交
  9. 02 12月, 2010 1 次提交
    • D
      timewait_sock: Create and use getpeer op. · ccb7c410
      David S. Miller 提交于
      The only thing AF-specific about remembering the timestamp
      for a time-wait TCP socket is getting the peer.
      
      Abstract that behind a new timewait_sock_ops vector.
      
      Support for real IPV6 sockets is not filled in yet, but
      curiously this makes timewait recycling start to work
      for v4-mapped ipv6 sockets.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ccb7c410
  10. 01 12月, 2010 1 次提交
  11. 21 10月, 2010 1 次提交
  12. 24 9月, 2010 1 次提交
  13. 13 7月, 2010 1 次提交
  14. 27 6月, 2010 1 次提交
  15. 16 6月, 2010 1 次提交
  16. 05 6月, 2010 1 次提交
  17. 02 6月, 2010 1 次提交
  18. 16 5月, 2010 1 次提交
    • E
      net: Introduce sk_route_nocaps · a465419b
      Eric Dumazet 提交于
      TCP-MD5 sessions have intermittent failures, when route cache is
      invalidated. ip_queue_xmit() has to find a new route, calls
      sk_setup_caps(sk, &rt->u.dst), destroying the 
      
      sk->sk_route_caps &= ~NETIF_F_GSO_MASK
      
      that MD5 desperately try to make all over its way (from
      tcp_transmit_skb() for example)
      
      So we send few bad packets, and everything is fine when
      tcp_transmit_skb() is called again for this socket.
      
      Since ip_queue_xmit() is at a lower level than TCP-MD5, I chose to use a
      socket field, sk_route_nocaps, containing bits to mask on sk_route_caps.
      Reported-by: NBhaskar Dutta <bhaskie@gmail.com>
      Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a465419b
  19. 23 4月, 2010 1 次提交
    • S
      IPv6: Generic TTL Security Mechanism (final version) · e802af9c
      Stephen Hemminger 提交于
      This patch adds IPv6 support for RFC5082 Generalized TTL Security Mechanism.  
      
      Not to users of mapped address; the IPV6 and IPV4 socket options are seperate.
      The server does have to deal with both IPv4 and IPv6 socket options
      and the client has to handle the different for each family.
      
      On client:
      	int ttl = 255;
      	getaddrinfo(argv[1], argv[2], &hint, &result);
      
      	for (rp = result; rp != NULL; rp = rp->ai_next) {
      		s = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
      		if (s < 0) continue;
      
      		if (rp->ai_family == AF_INET) {
      			setsockopt(s, IPPROTO_IP, IP_TTL, &ttl, sizeof(ttl));
      		} else if (rp->ai_family == AF_INET6) {
      			setsockopt(s, IPPROTO_IPV6,  IPV6_UNICAST_HOPS, 
      					&ttl, sizeof(ttl)))
      		}
      			
      		if (connect(s, rp->ai_addr, rp->ai_addrlen) == 0) {
      		   ...
      
      On server:
      	int minttl = 255 - maxhops;
         
      	getaddrinfo(NULL, port, &hints, &result);
      	for (rp = result; rp != NULL; rp = rp->ai_next) {
      		s = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
      		if (s < 0) continue;
      
      		if (rp->ai_family == AF_INET6)
      			setsockopt(s, IPPROTO_IPV6,  IPV6_MINHOPCOUNT,
      					&minttl, sizeof(minttl));
      		setsockopt(s, IPPROTO_IP, IP_MINTTL, &minttl, sizeof(minttl));
      			
      		if (bind(s, rp->ai_addr, rp->ai_addrlen) == 0)
      			break
      ...
      Signed-off-by: NStephen Hemminger <shemminger@vyatta.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e802af9c
  20. 22 4月, 2010 1 次提交
  21. 21 4月, 2010 3 次提交
  22. 16 4月, 2010 1 次提交
  23. 12 4月, 2010 2 次提交
  24. 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
  25. 09 3月, 2010 1 次提交
  26. 06 3月, 2010 2 次提交
  27. 18 1月, 2010 2 次提交
  28. 08 1月, 2010 1 次提交
  29. 16 12月, 2009 1 次提交
    • D
      tcp: Revert per-route SACK/DSACK/TIMESTAMP changes. · bb5b7c11
      David S. Miller 提交于
      It creates a regression, triggering badness for SYN_RECV
      sockets, for example:
      
      [19148.022102] Badness at net/ipv4/inet_connection_sock.c:293
      [19148.022570] NIP: c02a0914 LR: c02a0904 CTR: 00000000
      [19148.023035] REGS: eeecbd30 TRAP: 0700   Not tainted  (2.6.32)
      [19148.023496] MSR: 00029032 <EE,ME,CE,IR,DR>  CR: 24002442  XER: 00000000
      [19148.024012] TASK = eee9a820[1756] 'privoxy' THREAD: eeeca000
      
      This is likely caused by the change in the 'estab' parameter
      passed to tcp_parse_options() when invoked by the functions
      in net/ipv4/tcp_minisocks.c
      
      But even if that is fixed, the ->conn_request() changes made in
      this patch series is fundamentally wrong.  They try to use the
      listening socket's 'dst' to probe the route settings.  The
      listening socket doesn't even have a route, and you can't
      get the right route (the child request one) until much later
      after we setup all of the state, and it must be done by hand.
      
      This stuff really isn't ready, so the best thing to do is a
      full revert.  This reverts the following commits:
      
      f55017a9
      022c3f7d
      1aba721e
      cda42ebd
      345cda2f
      dc343475
      05eaade2
      6a2a2d6bSigned-off-by: NDavid S. Miller <davem@davemloft.net>
      bb5b7c11
  30. 09 12月, 2009 1 次提交
  31. 04 12月, 2009 1 次提交
    • E
      net: Batch inet_twsk_purge · b099ce26
      Eric W. Biederman 提交于
      This function walks the whole hashtable so there is no point in
      passing it a network namespace.  Instead I purge all timewait
      sockets from dead network namespaces that I find.  If the namespace
      is one of the once I am trying to purge I am guaranteed no new timewait
      sockets can be formed so this will get them all.  If the namespace
      is one I am not acting for it might form a few more but I will
      call inet_twsk_purge again and  shortly to get rid of them.  In
      any even if the network namespace is dead timewait sockets are
      useless.
      
      Move the calls of inet_twsk_purge into batch_exit routines so
      that if I am killing a bunch of namespaces at once I will just
      call inet_twsk_purge once and save a lot of redundant unnecessary
      work.
      
      My simple 4k network namespace exit test the cleanup time dropped from
      roughly 8.2s to 1.6s.  While the time spent running inet_twsk_purge fell
      to about 2ms.  1ms for ipv4 and 1ms for ipv6.
      Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b099ce26