1. 06 12月, 2013 2 次提交
    • S
      xfrm: Remove ancient sleeping when the SA is in acquire state · 5b8ef341
      Steffen Klassert 提交于
      We now queue packets to the policy if the states are not yet resolved,
      this replaces the ancient sleeping code. Also the sleeping can cause
      indefinite task hangs if the needed state does not get resolved.
      Signed-off-by: NSteffen Klassert <steffen.klassert@secunet.com>
      5b8ef341
    • F
      xfrm: Namespacify xfrm state/policy locks · 283bc9f3
      Fan Du 提交于
      By semantics, xfrm layer is fully name space aware,
      so will the locks, e.g. xfrm_state/pocliy_lock.
      Ensure exclusive access into state/policy link list
      for different name space with one global lock is not
      right in terms of semantics aspect at first place,
      as they are indeed mutually independent with each
      other, but also more seriously causes scalability
      problem.
      
      One practical scenario is on a Open Network Stack,
      more than hundreds of lxc tenants acts as routers
      within one host, a global xfrm_state/policy_lock
      becomes the bottleneck. But onces those locks are
      decoupled in a per-namespace fashion, locks contend
      is just with in specific name space scope, without
      causing additional SPD/SAD access delay for other
      name space.
      
      Also this patch improve scalability while as without
      changing original xfrm behavior.
      Signed-off-by: NFan Du <fan.du@windriver.com>
      Signed-off-by: NSteffen Klassert <steffen.klassert@secunet.com>
      283bc9f3
  2. 12 12月, 2011 1 次提交
  3. 18 10月, 2010 1 次提交
    • E
      netns: reorder fields in struct net · 8e602ce2
      Eric Dumazet 提交于
      In a network bench, I noticed an unfortunate false sharing between
      'loopback_dev' and 'count' fields in "struct net".
      
      'count' is written each time a socket is created or destroyed, while
      loopback_dev might be often read in routing code.
      
      Move loopback_dev in a read mostly section of "struct net"
      
      Note: struct netns_xfrm is cache line aligned on SMP.
      (It contains a "struct dst_ops")
      Move it at the end to avoid holes, and reduce sizeof(struct net) by 128
      bytes on ia32.
      Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8e602ce2
  4. 25 1月, 2010 1 次提交
  5. 04 12月, 2009 1 次提交
  6. 26 11月, 2008 20 次提交