cvs commit: src/sys/kern uipc_mbuf.c src/sys/netinet ip_output.c src/sys/sys mbuf.h

[Mike Silbersack]

silby       2003/08/31 22:55:37 PDT

  FreeBSD src repository

  Modified files:
    sys/kern             uipc_mbuf.c 
    sys/netinet          ip_output.c 
    sys/sys              mbuf.h 
  Log:
  Implement MBUF_STRESS_TEST mark II.
  
  Changes from the original implementation:
  
  - Fragmentation is handled by the function m_fragment, which can
  be called from whereever fragmentation is needed.  Note that this
  function is wrapped in #ifdef MBUF_STRESS_TEST to discourage non-testing
  use.
  
  - m_fragment works slightly differently from the old fragmentation
  code in that it allocates a seperate mbuf cluster for each fragment.
  This defeats dma_map_load_mbuf/buffer's feature of coalescing adjacent
  fragments.  While that is a nice feature in practice, it nerfed the
  usefulness of mbuf_stress_test.
  
  - Add two modes of random fragmentation.  Chains with fragments all of
  the same random length and chains with fragments that are each uniquely
  random in length may now be requested.
  
  Revision  Changes    Path
  1.120     +84 -0     src/sys/kern/uipc_mbuf.c
  1.193     +2 -18     src/sys/netinet/ip_output.c
  1.123     +1 -0      src/sys/sys/mbuf.h