CVS commit: src

["matthew green" <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Wed Jul 31 09:13:17 UTC 2019

Modified Files:
        src/distrib/sets/lists/modules: mi
        src/sys/dev/usb: files.usb if_axen.c if_axenreg.h if_cdce.c
        src/sys/modules: Makefile
Added Files:
        src/sys/dev/usb: usbnet.c usbnet.h
        src/sys/modules/usbnet: Makefile

Log Message:
introduce a library of common code / backends to share code between
USB ethernet drivers.

usbnet.h introduces a new set of APIs to provide common solutions
for these driver features:
 - USB endpoint pipe handling
 - rx and tx chain handling
 - generic handlers or support for several struct ifnet callbacks
 - MII bus locking
 - interrupt handling
 - partial autoconf handling: much of attach, and detach/activate
   can use common versions directly.

currently, only axen(4) and cdce(4) are converted.  the reductions
in these drivers are quite significant:  if_cdce.c is reduced from
1000 lines to 320 lines, and if_axen is reduced from 1902 lines
to 1021 lines.

add a "usbnet" module and make the if_axen module depend upon it.


To generate a diff of this commit:
cvs rdiff -u -r1.122 -r1.123 src/distrib/sets/lists/modules/mi
cvs rdiff -u -r1.156 -r1.157 src/sys/dev/usb/files.usb
cvs rdiff -u -r1.50 -r1.51 src/sys/dev/usb/if_axen.c
cvs rdiff -u -r1.14 -r1.15 src/sys/dev/usb/if_axenreg.h
cvs rdiff -u -r1.53 -r1.54 src/sys/dev/usb/if_cdce.c
cvs rdiff -u -r0 -r1.1 src/sys/dev/usb/usbnet.c src/sys/dev/usb/usbnet.h
cvs rdiff -u -r1.222 -r1.223 src/sys/modules/Makefile
cvs rdiff -u -r0 -r1.1 src/sys/modules/usbnet/Makefile

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