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Date: Thu, 2 Feb 2012 16:49:10 +0000
From: Wei Liu <wei.liu2@...rix.com>
To: netdev@...r.kernel.org, xen-devel@...ts.xensource.com
CC: ian.campbell@...rix.com, konrad.wilk@...cle.com
Subject: [RFC PATCH V4] Xen netback / netfront improvement
Changes in V4:
- Squash several patches
- Per-cpu scratch improvement, guard against race condition, NUMA
awared allocation
- Extend xenbus ring mapping interface to benifit all Xen BE / FE
- Remove RX protocol stub patch
Changes in V3:
- Rework of per-cpu scratch space
- Multi page ring support
- Split event channels
- Rx protocol stub
- Fix a minor bug in module_put path
Changes in V2:
- Fix minor bugs in V1
- Embed pending_tx_info into page pool
- Per-cpu scratch space
- Notification code path clean up
This version has been tested by
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
V1:
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 memory consumed by all vifs.
Utilization of NAPI enables the possibility to mitigate
interrupts/events, the code path is cleaned up in a separated patch.
Netback internal changes cleans up the code structure after switching
to 1:1 model. It also prepares netback for further code layout
changes.
-----
drivers/block/xen-blkback/xenbus.c | 8 +-
drivers/block/xen-blkfront.c | 5 +-
drivers/net/xen-netback/Makefile | 2 +-
drivers/net/xen-netback/common.h | 107 +++--
drivers/net/xen-netback/interface.c | 230 ++++++--
drivers/net/xen-netback/netback.c | 999 +++++++++++++++------------------
drivers/net/xen-netback/page_pool.c | 185 ++++++
drivers/net/xen-netback/page_pool.h | 66 +++
drivers/net/xen-netback/xenbus.c | 178 ++++++-
drivers/net/xen-netfront.c | 393 ++++++++++----
drivers/pci/xen-pcifront.c | 5 +-
drivers/scsi/xen-scsiback/common.h | 3 +-
drivers/scsi/xen-scsiback/interface.c | 6 +-
drivers/scsi/xen-scsiback/xenbus.c | 4 +-
drivers/scsi/xen-scsifront/xenbus.c | 5 +-
drivers/xen/xen-pciback/xenbus.c | 11 +-
drivers/xen/xenbus/xenbus_client.c | 282 +++++++---
include/xen/xenbus.h | 15 +-
18 files changed, 1646 insertions(+), 858 deletions(-)
--
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