CVS commit: src/sys/arch/xen/xen

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

Module Name:    src
Committed By:   jdolecek
Date:           Mon Apr  6 16:43:34 UTC 2020

Modified Files:
        src/sys/arch/xen/xen: if_xennet_xenbus.c

Log Message:
make a pass on locking, replacing spl*() calls with mutexes:
- sc_tx_lock covers any access to tx list, tx ring, and writes to
  if_flags and if_itimer
- sc_rx_lock covers any access to rx list, tx ring, and free tx counter

fix suspend and detach to work again - recent softintr changes made
xennet_tx_complete() not actually being called, because the call
in xennet_handler() was after IFF_RUNNING check; now it's called
directly rather than triggering softint, with updates locking it's safe

enable DVF_DETACH_SHUTDOWN for xennet(4), though the call only
triggers notification to backend to close, leaves actual detach to
xenwatch_thread


To generate a diff of this commit:
cvs rdiff -u -r1.104 -r1.105 src/sys/arch/xen/xen/if_xennet_xenbus.c

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