[SRU][B:linux-azure-4.15][PATCH 00/40] hv_netvsc: Add XDP support

William Breathitt Gray william.gray at canonical.com
Mon Nov 2 12:48:16 UTC 2020


BugLink: https://bugs.launchpad.net/bugs/1877654

[Impact]

Microsoft would like to request the following three patches in all releases supported on Azure:

351e1581395fc (“hv_netvsc: Add XDP support”)
12fa74383ed4d (“hv_netvsc: Update document for XDP support”)
184367dce4f7 (“hv_netvsc: Fix XDP refcnt for synthetic and VF NICs”)

These patches add support of XDP in native mode to the hv_netvsc driver, and
transparently sets the XDP program on the associated VF NIC as well.

[Regression Potential]

The backport to Bionic:linux-azure-4.15 required a lot of context
adjustments. Regression potentials are spread across a number of files
and drivers. Most adjustments were trivial, but the changes in
netvsc_drv.c should be kept an eye on. In particular, if a regression
occurs it will likely happen in the netvsc_alloc_recv_skb(),
netvsc_recv_callback(), or netvsc_devinfo_get() functions due to the
context difference of these areas compared to the original patch.

In general, Linux 4.15 was missing key code for XDP. As such, many
prelimary commit backports were required to pull in that support before
it could be added to hv_netvsc driver in the primary backports.

[Miscellaneous]

The 5.4 version is already released so we do not need to worry about
that series.

Backports of the "xdp: new XDP rx-queue info concept" patchset and "XDP
redirect memory return API" patchset patches are included to add support
for the XDP API:
https://patchwork.ozlabs.org/project/netdev/cover/151497504273.18176.10177133999720101758.stgit@firesoul/
https://patchwork.ozlabs.org/project/netdev/cover/152397622657.20272.10121948713784224943.stgit@firesoul/

Björn Töpel (5):
  i40e: add support for XDP_REDIRECT
  xsk: add user memory registration support sockopt
  xsk: add Rx queue setup and mmap support
  xsk: add Rx receive functions and poll support
  xdp: add MEM_TYPE_ZERO_COPY

Haiyang Zhang (5):
  hv_netvsc: Add support for LRO/RSC in the vSwitch
  hv_netvsc: Refactor assignments of struct netvsc_device_info
  hv_netvsc: Add XDP support
  hv_netvsc: Update document for XDP support
  hv_netvsc: Fix XDP refcnt for synthetic and VF NICs

Jason Wang (3):
  tun/tap: use ptr_ring instead of skb_array
  tuntap: XDP transmission
  tuntap: XDP_TX can use native XDP

Jesper Dangaard Brouer (24):
  xdp: base API for new XDP rx-queue info concept
  ixgbe: setup xdp_rxq_info
  xdp/qede: setup xdp_rxq_info and intro xdp_rxq_info_is_reg
  tun: setup xdp_rxq_info
  virtio_net: setup xdp_rxq_info
  xdp: generic XDP handling of xdp_rxq_info
  net: avoid including xdp.h in filter.h
  virtio_net: fix ndo_xdp_xmit crash towards dev not ready for XDP
  xdp: introduce xdp_return_frame API and use in cpumap
  ixgbe: use xdp_return_frame API
  xdp: move struct xdp_buff from filter.h to xdp.h
  xdp: introduce a new xdp_frame type
  tun: convert to use generic xdp_frame and xdp_return_frame API
  virtio_net: convert to use generic xdp_frame and xdp_return_frame API
  bpf: cpumap convert to use generic xdp_frame
  i40e: convert to use generic xdp_frame and xdp_return_frame API
  xdp: rhashtable with allocator ID to pointer mapping
  page_pool: refurbish version of page_pool code
  xdp: allow page_pool as an allocator type in xdp_return_frame
  xdp: transition into using xdp_frame for return API
  xdp: transition into using xdp_frame for ndo_xdp_xmit
  bpf: devmap introduce dev_map_enqueue
  bpf: devmap prepare xdp frames for bulking
  xdp: introduce xdp_return_frame_rx_napi

Magnus Karlsson (2):
  xsk: add umem fill queue support and mmap
  xsk: add support for bind for Rx

Stephen Hemminger (1):
  hv_netvsc: pass netvsc_device to receive callback

 Documentation/networking/netvsc.txt           |  21 +
 debian.azure-4.15/config/config.common.ubuntu |   1 +
 drivers/net/ethernet/intel/i40e/i40e_main.c   |   2 +
 drivers/net/ethernet/intel/i40e/i40e_txrx.c   | 103 +++-
 drivers/net/ethernet/intel/i40e/i40e_txrx.h   |   3 +
 drivers/net/ethernet/intel/ixgbe/ixgbe.h      |   5 +-
 .../net/ethernet/intel/ixgbe/ixgbe_ethtool.c  |   4 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c |  48 +-
 .../net/ethernet/mellanox/mlx5/core/Kconfig   |   1 +
 .../net/ethernet/mellanox/mlx5/core/en_rx.c   |   1 +
 drivers/net/ethernet/qlogic/qede/qede.h       |   2 +
 drivers/net/ethernet/qlogic/qede/qede_fp.c    |   1 +
 drivers/net/ethernet/qlogic/qede/qede_main.c  |  10 +
 drivers/net/hyperv/Makefile                   |   2 +-
 drivers/net/hyperv/hyperv_net.h               |  70 ++-
 drivers/net/hyperv/netvsc.c                   |  48 +-
 drivers/net/hyperv/netvsc_bpf.c               | 218 ++++++++
 drivers/net/hyperv/netvsc_drv.c               | 335 ++++++++----
 drivers/net/hyperv/rndis_filter.c             |  96 +++-
 drivers/net/tap.c                             |  42 +-
 drivers/net/tun.c                             | 291 +++++++++--
 drivers/net/virtio_net.c                      |  89 +++-
 drivers/vhost/net.c                           |  53 +-
 include/linux/bpf.h                           |  16 +-
 include/linux/filter.h                        |  24 +-
 include/linux/if_tap.h                        |   6 +-
 include/linux/if_tun.h                        |  21 +-
 include/linux/netdevice.h                     |   6 +-
 include/net/page_pool.h                       | 144 +++++
 include/net/xdp.h                             | 143 +++++
 include/net/xdp_sock.h                        |  58 ++
 include/trace/events/xdp.h                    |   9 +-
 include/uapi/linux/if_xdp.h                   |  76 +++
 kernel/bpf/cpumap.c                           | 132 ++---
 kernel/bpf/devmap.c                           | 103 +++-
 net/Kconfig                                   |   3 +
 net/Makefile                                  |   1 +
 net/core/Makefile                             |   3 +-
 net/core/dev.c                                |  69 ++-
 net/core/filter.c                             |  14 +-
 net/core/page_pool.c                          | 317 +++++++++++
 net/core/xdp.c                                | 372 +++++++++++++
 net/xdp/Makefile                              |   2 +
 net/xdp/xdp_umem.c                            | 255 +++++++++
 net/xdp/xdp_umem.h                            |  66 +++
 net/xdp/xdp_umem_props.h                      |  23 +
 net/xdp/xsk.c                                 | 494 ++++++++++++++++++
 net/xdp/xsk_queue.c                           |  73 +++
 net/xdp/xsk_queue.h                           | 151 ++++++
 49 files changed, 3610 insertions(+), 417 deletions(-)
 create mode 100644 drivers/net/hyperv/netvsc_bpf.c
 create mode 100644 include/net/page_pool.h
 create mode 100644 include/net/xdp.h
 create mode 100644 include/net/xdp_sock.h
 create mode 100644 include/uapi/linux/if_xdp.h
 create mode 100644 net/core/page_pool.c
 create mode 100644 net/core/xdp.c
 create mode 100644 net/xdp/Makefile
 create mode 100644 net/xdp/xdp_umem.c
 create mode 100644 net/xdp/xdp_umem.h
 create mode 100644 net/xdp/xdp_umem_props.h
 create mode 100644 net/xdp/xsk.c
 create mode 100644 net/xdp/xsk_queue.c
 create mode 100644 net/xdp/xsk_queue.h

-- 
2.25.1




More information about the kernel-team mailing list