[PATCH v3 bpf 0/4] net: bpf_xdp_adjust_tail() fixes

From: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
To: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
	andrii@kernel.org
Cc: netdev@vger.kernel.org, magnus.karlsson@intel.com,
	bjorn@kernel.org, maciej.fijalkowski@intel.com,
	echaudro@redhat.com, lorenzo@kernel.org,
	tirthendu.sarkar@intel.com
Subject: [PATCH v3 bpf 0/4] net: bpf_xdp_adjust_tail() fixes
Date: Thu, 21 Dec 2023 14:26:52 +0100	[thread overview]
Message-ID: <20231221132656.384606-1-maciej.fijalkowski@intel.com> (raw)

Hi,

this set is about fixing bpf_xdp_adjust_tail() usage in XDP progs for
multi-buffer AF_XDP. Both copy and zero-copy modes were broken.

Thanks,
Maciej

v3:
- add acks
- s/xsk_buff_tail_del/xsk_buff_del_tail
- address i40e as well (thanks Tirthendu)

v2:
- fix !CONFIG_XDP_SOCKETS builds
- add reviewed-by tag to patch 3

Maciej Fijalkowski (3):
  xsk: recycle buffer in case Rx queue was full
  xsk: fix usage of multi-buffer BPF helpers for ZC XDP
  ice: work on pre-XDP prog frag count

Tirthendu Sarkar (1):
  i40e: handle multi-buffer packets that are shrunk by xdp prog

 drivers/net/ethernet/intel/i40e/i40e_txrx.c   | 42 +++++++++-------
 drivers/net/ethernet/intel/ice/ice_txrx.c     | 14 ++++--
 drivers/net/ethernet/intel/ice/ice_txrx.h     |  1 +
 drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 31 ++++++++----
 include/net/xdp_sock_drv.h                    | 26 ++++++++++
 net/core/filter.c                             | 48 +++++++++++++++----
 net/xdp/xsk.c                                 | 12 +++--
 7 files changed, 129 insertions(+), 45 deletions(-)

-- 
2.34.1