---
- branch: MAIN
  date: Wed Aug 29 20:39:24 UTC 2012
  files:
  - new: '1.232'
    old: '1.231'
    path: src/sys/dev/pci/if_wm.c
    pathrev: src/sys/dev/pci/if_wm.c@1.232
    type: modified
  - new: '1.48'
    old: '1.47'
    path: src/sys/dev/pci/if_wmreg.h
    pathrev: src/sys/dev/pci/if_wmreg.h@1.48
    type: modified
  id: 20120829T203924Z.a9a68448fa9b2c7edeb95106fe94e5fa1035264c
  log: |
    Make vlan and all ip/ip6 checksum offload work for the I350.

    On newer devices, when using the legacy TX descriptors, vlan-related flags
    that were set on the last descriptor of a packet have to be set on the
    first one.
    For tso/checksum offloads, a new "advanced" descriptor format has to be
    used.

    Change wcd_txdescs to a union defining all types of descriptors (they
    are all 16-bytes wide).
    Define a new tx function wm_nq_start(), which handle newer devices.
    There is some code duplication with wm_start(), but adding support to
    the existing wm_start() would make it a if () {} else {} maze. This also
    allows to get rid of some workaround for older chips that are not needed
    here.
    Use wm_nq_start() instead of wm_start() for the I350 (this should probably
    be for all WM_F_NEWQUEUE devices, but I have no hardware but the I350 to
    test). Call ifp->if_start() instead of wm_start() where is matters.

    Tested on a I350, and a i80003 (which use the old format), both with and
    without vlans, with and without checksum offloads.
  module: src
  subject: 'CVS commit: src/sys/dev/pci'
  unixtime: '1346272764'
  user: bouyer