1. 06 Dec, 2018 5 commits
  2. 05 Dec, 2018 6 commits
  3. 04 Dec, 2018 28 commits
  4. 03 Dec, 2018 1 commit
    • David S. Miller's avatar
      Merge branch 'udp-msg_zerocopy' · 6e360f73
      David S. Miller authored
      Willem de Bruijn says:
      
      ====================
      udp msg_zerocopy
      
      Enable MSG_ZEROCOPY for udp sockets
      
      Patch 1/3 is the main patch, a rework of RFC patch
        http://patchwork.ozlabs.org/patch/899630/
        more details in the patch commit message
      
      Patch 2/3 is an optimization to remove a branch from the UDP hot path
        and refcount_inc/refcount_dec_and_test pair when zerocopy is used.
        This used to be included in the first patch in v2.
      
      Patch 3/3 runs the already existing udp zerocopy tests
        as part of kselftest
      
      See also recent Linux Plumbers presentation
        https://linuxplumbersconf.org/event/2/contributions/106/attachments/104/128/willemdebruijn-lpc2018-udpgso-presentation-20181113.pdf
      
      Changes:
        v1 -> v2
          - Fixup reverse christmas tree violation
        v2 -> v3
          - Split refcount avoidance optimization into separate patch
            - Fix refcount leak on error in fragmented case
              (thanks to Paolo Abeni for pointing this one out!)
            - Fix refcount inc on zero
        v3 -> v4
          - Move skb_zcopy_set below the only kfree_skb that might cause
            a premature uarg destroy before skb_zerocopy_put_abort
            - Move the entire skb_shinfo assignment block, to keep that
      	cacheline access in one place
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6e360f73