[PATCH net v2 0/3] xen-netback: synchronisation between core driver and netback
From: Wei Liu <hidden>
Date: 2014-08-08 16:37:14
The zero-copy netback has far more interactions with core network driver than the old copying backend. One significant thing is that netback now relies on a callback from core driver to correctly release resources. However correct synchronisation between core driver and netback is missing. Currently netback relies on a loop to wait for core driver to release resources. This is proven not enough and erronous recently, partly due to code structure, partly due to missing synchronisation. Short-live domains like OpenMirage unikernels can easily trigger race in backend, rendering backend unresponsive. This patch series aims to slove this issue by introducing proper synchronisation between core driver and netback. Wei. Change in v2: fix Zoltan's email address in commit message Wei Liu (3): xen-netback: move NAPI add/remove calls xen-netback: don't stop dealloc kthread too early xen-netback: remove loop waiting function drivers/net/xen-netback/common.h | 5 +++ drivers/net/xen-netback/interface.c | 57 +++++++++++++++-------------------- drivers/net/xen-netback/netback.c | 24 ++++++++++++--- 3 files changed, 49 insertions(+), 37 deletions(-) -- 1.7.10.4