test/expected/LWN/0000764200.header

   1 0[$] Writing network flow dissectors in BPF     null/LWN/0000764200             70
   2 i  [Kernel] Sep 6, 2018 15:59 UTC (Thu) (corbet)
   3 i
   4 i    Network  packet  headers  contain  a great deal of information,
   5 i    but  the  kernel  often only needs a subset of that information
   6 i    to  be  able to perform filtering or associate any given packet
   7 i    with  a  flow.  The  piece  of  code that follows the different
   8 i    layers  of  packet  encapsulation to find the important data is
   9 i    called  a flow dissector. In current Linux kernels, the [1]flow
  10 i    dissector  is  written  in  C. A [2]patch set has been proposed
  11 i    recently  to  implement  it  in  BPF  with  the  clear  goal of
  12 i    improving security, flexibility, and maybe even performance.
  13 i
  14 i
  15 i
  16 i    [1] https://elixir.bootlin.com/linux/v4.18.6/source/net/core/f-
  17 i    low_dissector.c
  18 i
  19 i    [2] https://lwn.net/Articles/763938/
  20 i