CVS commit: src/sys/arch/xen

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

Module Name:    src
Committed By:   jdolecek
Date:           Mon Mar 16 20:51:36 UTC 2020

Modified Files:
        src/sys/arch/xen/include: xennet_checksum.h
        src/sys/arch/xen/xen: if_xennet_xenbus.c xennet_checksum.c
            xennetback_xenbus.c

Log Message:
drop the disabled M_EXT_ROMAP mbuf code, convert xennet_checksum_fill()
to use in_undefer_cksum() instead of custom code to compute the checksum
for Rx packets, and set csum_data appropriately for eventual hw offloading

make it possible to skip the sw checksum computation by appropriate Rx
flag similarily as we do for Tx

XXX for now, the Rx flag is mostly for testing as it only works for
dom0<->domu, need some further network stack changes to arrange for
the checksum to be eventually computed when packets goes outside xen


To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/arch/xen/include/xennet_checksum.h
cvs rdiff -u -r1.89 -r1.90 src/sys/arch/xen/xen/if_xennet_xenbus.c
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/xen/xen/xennet_checksum.c
cvs rdiff -u -r1.77 -r1.78 src/sys/arch/xen/xen/xennetback_xenbus.c

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