netdev - [PATCH v3 net-next 0/5] xdp: introduce bulking for page

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Date:   Wed,  4 Nov 2020 11:22:53 +0100
From:   Lorenzo Bianconi <lorenzo@...nel.org>
To:     netdev@...r.kernel.org
Cc:     bpf@...r.kernel.org, lorenzo.bianconi@...hat.com,
        davem@...emloft.net, kuba@...nel.org, brouer@...hat.com,
        ilias.apalodimas@...aro.org
Subject: [PATCH v3 net-next 0/5] xdp: introduce bulking for page_pool tx return path

XDP bulk APIs introduce a defer/flush mechanism to return
pages belonging to the same xdp_mem_allocator object
(identified via the mem.id field) in bulk to optimize
I-cache and D-cache since xdp_return_frame is usually run
inside the driver NAPI tx completion loop.
Convert mvneta, mvpp2 and mlx5 drivers to xdp_return_frame_bulk APIs.

Changes since v2:
- move mvneta changes in a dedicated patch

Changes since v1:
- improve comments
- rework xdp_return_frame_bulk routine logic
- move count and xa fields at the beginning of xdp_frame_bulk struct
- invert logic in page_pool_put_page_bulk for loop

Lorenzo Bianconi (5):
  net: xdp: introduce bulking for xdp tx return path
  net: page_pool: add bulk support for ptr_ring
  net: mvneta: add xdp tx return bulking support
  net: mvpp2: add xdp tx return bulking support
  net: mlx5: add xdp tx return bulking support

 drivers/net/ethernet/marvell/mvneta.c         |  5 +-
 .../net/ethernet/marvell/mvpp2/mvpp2_main.c   |  5 +-
 .../net/ethernet/mellanox/mlx5/core/en/xdp.c  |  5 +-
 include/net/page_pool.h                       | 26 +++++++++
 include/net/xdp.h                             |  9 +++
 net/core/page_pool.c                          | 35 ++++++++++++
 net/core/xdp.c                                | 56 +++++++++++++++++++
 7 files changed, 138 insertions(+), 3 deletions(-)

-- 
2.26.2