[PATCH v4 net-next 0/5] mtk_eth_soc: add xdp support

[Lorenzo Bianconi]

Introduce XDP support for mtk_eth_soc driver if rx hwlro is not
enabled in the chipset (e.g. mt7986).
Supported XDP verdicts:
- XDP_PASS
- XDP_DROP
- XDP_REDIRECT
- XDP_TX
- ndo_xdp_xmit
Rely on page_pool allocator for single page buffers in order to keep
them dma mapped and add skb recycling support.

Changes since v3:
- add missing rcu_read_lock()/rcu_read_unlock()
- introduce mtk_page_pool_enabled() utility routine

Changes since v2:
- fix leftover sparse warning
- add page_pool ethtool stats

Changes since v1:
- do not allocate mtk_xdp_stats array on the stack in mtk_rx_poll
- add rcu annotation to bpf program

Lorenzo Bianconi (5):
  net: ethernet: mtk_eth_soc: rely on page_pool for single page buffers
  net: ethernet: mtk_eth_soc: add basic XDP support
  net: ethernet: mtk_eth_soc: introduce xdp ethtool counters
  net: ethernet: mtk_eth_soc: add xmit XDP support
  net: ethernet: mtk_eth_soc: add support for page_pool_get_stats

 drivers/net/ethernet/mediatek/Kconfig       |   2 +
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 572 +++++++++++++++++---
 drivers/net/ethernet/mediatek/mtk_eth_soc.h |  34 +-
 3 files changed, 537 insertions(+), 71 deletions(-)

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2.36.1