| From: |
| Wei Liu <wei.liu2@citrix.com> |
| To: |
| ian.campbell@citrix.com, konrad.wilk@oracle.com,
xen-devel@lists.xensource.com, netdev@vger.kernel.org |
| Subject: |
| [RFC PATCH] New Xen netback implementation |
| Date: |
| Fri, 13 Jan 2012 16:59:03 +0000 |
| Message-ID: |
| <1326473949-22389-1-git-send-email-wei.liu2@citrix.com> |
| Archive‑link: | |
Article |
A new netback implementation which includes three major features:
- Global page pool support
- NAPI + kthread 1:1 model
- Netback internal name changes
This patch series is the foundation of furture work. So it is better
to get it right first. Patch 1 and 3 have the real meat.
The first benifit of 1:1 model will be scheduling fairness.
The rational behind a global page pool is that we need to limit
overall RAM consumed by all vifs.
Utilization of NAPI enables the possibility to mitigate
interrupts/events, but this is not yet done.
Netback internal changes cleans up the code structure after switching
to 1:1 model. It also prepares netback for further code layout
changes.
---
drivers/net/xen-netback/Makefile | 2 +-
drivers/net/xen-netback/common.h | 94 +++--
drivers/net/xen-netback/interface.c | 115 ++++--
drivers/net/xen-netback/netback.c | 743 +++++++++++------------------------
drivers/net/xen-netback/page_pool.c | 183 +++++++++
drivers/net/xen-netback/page_pool.h | 61 +++
drivers/net/xen-netback/xenbus.c | 6 +-
7 files changed, 620 insertions(+), 584 deletions(-)
