1. 27 8月, 2010 1 次提交
    • E
      gro: __napi_gro_receive() optimizations · 40d0802b
      Eric Dumazet 提交于
      compare_ether_header() can have a special implementation on 64 bit
      arches if CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is defined.
      
      __napi_gro_receive() and vlan_gro_common() can avoid a conditional
      branch to perform device match.
      
      On x86_64, __napi_gro_receive() has now 38 instructions instead of 53
      
      As gcc-4.4.3 still choose to not inline it, add inline keyword to this
      performance critical function.
      Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
      CC: Herbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      40d0802b
  2. 10 8月, 2010 1 次提交
  3. 25 7月, 2010 1 次提交
    • S
      sysfs: add attribute to indicate hw address assignment type · c1f79426
      Stefan Assmann 提交于
      Add addr_assign_type to struct net_device and expose it via sysfs.
      This new attribute has the purpose of giving user-space the ability to
      distinguish between different assignment types of MAC addresses.
      
      For example user-space can treat NICs with randomly generated MAC
      addresses differently than NICs that have permanent (locally assigned)
      MAC addresses.
      For the former udev could write a persistent net rule by matching the
      device path instead of the MAC address.
      There's also the case of devices that 'steal' MAC addresses from slave
      devices. In which it is also be beneficial for user-space to be aware
      of the fact.
      
      This patch also introduces a helper function to assist adoption of
      drivers that generate MAC addresses randomly.
      Signed-off-by: NStefan Assmann <sassmann@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c1f79426
  4. 06 5月, 2009 1 次提交
    • J
      net: introduce a list of device addresses dev_addr_list (v6) · f001fde5
      Jiri Pirko 提交于
      v5 -> v6 (current):
      -removed so far unused static functions
      -corrected dev_addr_del_multiple to call del instead of add
      
      v4 -> v5:
      -added device address type (suggested by davem)
      -removed refcounting (better to have simplier code then safe potentially few
       bytes)
      
      v3 -> v4:
      -changed kzalloc to kmalloc in __hw_addr_add_ii()
      -ASSERT_RTNL() avoided in dev_addr_flush() and dev_addr_init()
      
      v2 -> v3:
      -removed unnecessary rcu read locking
      -moved dev_addr_flush() calling to ensure no null dereference of dev_addr
      
      v1 -> v2:
      -added forgotten ASSERT_RTNL to dev_addr_init and dev_addr_flush
      -removed unnecessary rcu_read locking in dev_addr_init
      -use compare_ether_addr_64bits instead of compare_ether_addr
      -use L1_CACHE_BYTES as size for allocating struct netdev_hw_addr
      -use call_rcu instead of rcu_synchronize
      -moved is_etherdev_addr into __KERNEL__ ifdef
      
      This patch introduces a new list in struct net_device and brings a set of
      functions to handle the work with device address list. The list is a replacement
      for the original dev_addr field and because in some situations there is need to
      carry several device addresses with the net device. To be backward compatible,
      dev_addr is made to point to the first member of the list so original drivers
      sees no difference.
      Signed-off-by: NJiri Pirko <jpirko@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f001fde5
  5. 09 2月, 2009 1 次提交
  6. 24 11月, 2008 1 次提交
    • E
      eth: Declare an optimized compare_ether_addr_64bits() function · 1f87e235
      Eric Dumazet 提交于
      Linus mentioned we could try to perform long word operations, even
      on potentially unaligned addresses, on x86 at least. David mentioned
      the HAVE_EFFICIENT_UNALIGNED_ACCESS test to handle this on all
      arches that have efficient unailgned accesses.
      
      I tried this idea and got nice assembly on 32 bits:
      
      158:   33 82 38 01 00 00       xor    0x138(%edx),%eax
      15e:   33 8a 34 01 00 00       xor    0x134(%edx),%ecx
      164:   c1 e0 10                shl    $0x10,%eax
      167:   09 c1                   or     %eax,%ecx
      169:   74 0b                   je     176 <eth_type_trans+0x87>
      
      And very nice assembly on 64 bits of course (one xor, one shl)
      
      Nice oprofile improvement in eth_type_trans(), 0.17 % instead of 0.41 %,
      expected since we remove 8 instructions on a fast path.
      
      This patch implements a compare_ether_addr_64bits() function, that
      uses the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ifdef to efficiently
      perform the 6 bytes comparison on all capable arches.
      Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1f87e235
  7. 20 11月, 2008 1 次提交
  8. 14 2月, 2008 1 次提交
  9. 11 10月, 2007 1 次提交
  10. 11 7月, 2007 2 次提交
  11. 08 5月, 2007 1 次提交
  12. 04 1月, 2006 1 次提交
  13. 03 11月, 2005 2 次提交
  14. 29 10月, 2005 1 次提交
  15. 13 7月, 2005 1 次提交
  16. 29 6月, 2005 1 次提交
  17. 28 6月, 2005 2 次提交
  18. 30 5月, 2005 1 次提交
  19. 06 5月, 2005 1 次提交
  20. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      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!
      1da177e4