[PATCH v3 net-next 00/14] mlx4: order-0 allocations and page recycling

[Eric Dumazet <edumazet@google.com>]

As mentioned half a year ago, we better switch mlx4 driver to order-0
allocations and page recycling.

This reduces vulnerability surface thanks to better skb->truesize
tracking and provides better performance in most cases.

v2 provides an ethtool -S new counter (rx_alloc_pages) and
code factorization, plus Tariq fix.

v3 includes various fixes based on Tariq tests and feedback
from Saeed and Tariq.

Worth noting this patch series deletes ~250 lines of code ;)

Eric Dumazet (14):
  mlx4: use __skb_fill_page_desc()
  mlx4: dma_dir is a mlx4_en_priv attribute
  mlx4: remove order field from mlx4_en_frag_info
  mlx4: get rid of frag_prefix_size
  mlx4: rx_headroom is a per port attribute
  mlx4: reduce rx ring page_cache size
  mlx4: removal of frag_sizes[]
  mlx4: use order-0 pages for RX
  mlx4: add page recycling in receive path
  mlx4: add rx_alloc_pages counter in ethtool -S
  mlx4: do not access rx_desc from mlx4_en_process_rx_cq()
  mlx4: factorize page_address() calls
  mlx4: make validate_loopback() more generic
  mlx4: remove duplicate code in mlx4_en_process_rx_cq()

 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c  |   2 +-
 drivers/net/ethernet/mellanox/mlx4/en_port.c     |   2 +
 drivers/net/ethernet/mellanox/mlx4/en_rx.c       | 609 +++++++----------------
 drivers/net/ethernet/mellanox/mlx4/en_selftest.c |   6 -
 drivers/net/ethernet/mellanox/mlx4/en_tx.c       |   4 +-
 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h     |  29 +-
 drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h  |   2 +-
 7 files changed, 202 insertions(+), 452 deletions(-)

-- 
2.11.0.483.g087da7b7c-goog