[PATCH v2 0/7] Xen transport for 9pfs frontend driver
From: Stefano Stabellini
Date: Wed Mar 08 2017 - 18:58:10 EST
Hi all,
This patch series implements a new transport for 9pfs, aimed at Xen
systems.
The transport is based on a traditional Xen frontend and backend drivers
pair. This patch series implements the frontend, which typically runs in
a regular unprivileged guest.
I also sent a series that implements the backend in userspace in QEMU,
which typically runs in Dom0 (but could also run in a another guest).
The frontend complies to the Xen transport for 9pfs specification
version 1, available here:
http://xenbits.xen.org/gitweb/?p=xen.git;a=blob_plain;f=docs/misc/9pfs.markdown;hb=HEAD
Changes in v2:
- use XEN_PAGE_SHIFT instead of PAGE_SHIFT
- remove unnecessary initializations
- fix error paths
- fix memory allocations for 64K kernels
- simplify p9_xen_create and p9_xen_close
- use virt_XXX barriers
- set status = REQ_STATUS_ERROR inside the p9_xen_response loop
- add in-code comments
Stefano Stabellini (7):
xen: import new ring macros in ring.h
xen: introduce the header file for the Xen 9pfs transport protocol
xen/9pfs: introduce Xen 9pfs transport driver
xen/9pfs: connect to the backend
xen/9pfs: send requests to the backend
xen/9pfs: receive responses
xen/9pfs: build 9pfs Xen transport driver
include/xen/interface/io/9pfs.h | 40 ++++
include/xen/interface/io/ring.h | 131 +++++++++++
net/9p/Kconfig | 8 +
net/9p/Makefile | 4 +
net/9p/trans_xen.c | 466 ++++++++++++++++++++++++++++++++++++++++
5 files changed, 649 insertions(+)
create mode 100644 include/xen/interface/io/9pfs.h
create mode 100644 net/9p/trans_xen.c
Cheers,
Stefano