Module Name: src Committed By: jym Date: Sat Oct 16 00:12:09 UTC 2010
Modified Files: src/sys/arch/xen/xen: if_xennet_xenbus.c Log Message: Features (like feature-rx-copy) are set during XenbusStateInitWait in backend. So delay xennet_xenbus_resume() up to notification of backend state change. This avoids a race that happens during dynamic attach/detach of network interfaces with xm(1), where frontend queries xenstore for features not yet reported by backend. This does not happen during normal domU boot, as the backend has enough time to fill in these entries before frontend asks for them. Issue was reported by sborrill@: detaching xennet interfaces with RX copy mode enabled turns them back during attach to RX flip mode due to the race. feature-rx-copy support is part of another patch. To generate a diff of this commit: cvs rdiff -u -r1.41 -r1.42 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.