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  1. Apr 27, 2016
  2. Apr 26, 2016
    • David S. Miller's avatar
      Merge branch 'ila-csum-neutral' · fab7b629
      David S. Miller authored
      
      
      Tom Herbert says:
      
      ====================
      ila: Support for checksum neutral translations
      
      This patch set updates ILA to support draft-herbert-nvo3-ila-02. The
      primary addition is support checksum neutral ILA translation.
      This allows address to be performed and still keep any transport
      layer checksums that include the addresses in their pseudo header to
      still be correct without the translator needing to parse L4.
      
      Other items are:
         - Structures for ILA addresses, identifiers, locators
         - Disallow translation on non-ILA addresses (check by
           type in identifier).
         - Change xlat (nf_input) to translates solely based
           on matching locators not identifiers (since identifiers
           are not obfuscated by checksum neutral).
         - Side effect if above is that multiple ILA domains are
           supported. Each local locator can map to a different
           SIR address (ILA domain), and each domain defines its
           own identifier space.
      
      Tested: Ran TCP_RR with 200 cnxs. ILA performance is slightly better
      than previously since we are not longer parsing L4 for checksum
      handling. I amd seeing about 1% performance overhead. Also ran
      TCP_STREAM and tested non-ILA address (type=0) are not translated.
      
      v2: Fix compilation errors
      ====================
      
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fab7b629