netdev - [PATCH net-next v9 0/2] xen networking: add XDP support to xen-netfront

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Date:   Mon, 11 May 2020 13:22:19 +0300
From:   Denis Kirjanov <kda@...ux-powerpc.org>
To:     netdev@...r.kernel.org
Cc:     brouer@...hat.com, jgross@...e.com, wei.liu@...nel.org,
        paul@....org, ilias.apalodimas@...aro.org
Subject: [PATCH net-next v9 0/2] xen networking: add XDP support to xen-netfront

This series adds XDP support to xen-nefront driver.
The second patch enables extra space for XDP processing.

v9:
- assign an xdp program before switching to Reconfiguring
- minor cleanups
- address checkpatch issues

v8:
- add PAGE_POOL config dependency
- keep the state of XDP processing in netfront_xdp_enabled
- fixed allocator type in xdp_rxq_info_reg_mem_model()
- minor cleanups in xen-netback

v7:
- use page_pool_dev_alloc_pages() on page allocation
- remove the leftover break statement from netback_changed

v6:
- added the missing SOB line
- fixed subject

v5:
- split netfront/netback changes
- added a sync point between backend/frontend on switching to XDP
- added pagepool API

v4:
- added verbose patch descriprion
- don't expose the XDP headroom offset to the domU guest
- add a modparam to netback to toggle XDP offset
- don't process jumbo frames for now

v3:
- added XDP_TX support (tested with xdping echoserver)
- added XDP_REDIRECT support (tested with modified xdp_redirect_kern)
- moved xdp negotiation to xen-netback

v2:
- avoid data copying while passing to XDP
- tell xen-netback that we need the headroom space

Denis Kirjanov (2):
  xen networking: add basic XDP support for xen-netfront
  xen networking: add XDP offset adjustment to xen-netback

 drivers/net/Kconfig               |   1 +
 drivers/net/xen-netback/common.h  |   2 +
 drivers/net/xen-netback/netback.c |   7 +
 drivers/net/xen-netback/rx.c      |   7 +-
 drivers/net/xen-netback/xenbus.c  |  28 ++++
 drivers/net/xen-netfront.c        | 317 +++++++++++++++++++++++++++++++++++++-
 6 files changed, 355 insertions(+), 7 deletions(-)

-- 
1.8.3.1