CVS commit: src/sys/dev/pci

["Manuel Bouyer" <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Wed Aug 29 20:39:24 UTC 2012

Modified Files:
        src/sys/dev/pci: if_wm.c if_wmreg.h

Log Message:
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.


To generate a diff of this commit:
cvs rdiff -u -r1.231 -r1.232 src/sys/dev/pci/if_wm.c
cvs rdiff -u -r1.47 -r1.48 src/sys/dev/pci/if_wmreg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.