[SRU][B:linux-azure-4.15][PATCH 00/40] hv_netvsc: Add XDP support
Stefan Bader
stefan.bader at canonical.com
Tue Nov 3 09:47:54 UTC 2020
On 02.11.20 13:48, William Breathitt Gray wrote:
> 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
>
Submissions of that size should be rather done as pull requests. Things get
rather unwieldy otherwise...
-Stefan
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