Date: Fri, 28 Jul 2023 19:10:32 +0200 Subject: [PATCH bpf-next v4 00/21] XDP metadata via kfuncs for ice MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This series introduces XDP hints via kfuncs [0] to the ice driver. Series brings the following existing hints to the ice driver: - HW timestamp - RX hash with type Series also introduces new hints and adds their implementation to ice and veth: - VLAN tag with protocol - Checksum status The data above can now be accessed by XDP and userspace (AF_XDP) programs. They can also be checked with xdp_metadata test and xdp_hw_metadata program. [0] https://patchwork.kernel.org/project/netdevbpf/cover/20230119221536.3349901-1-sdf@xxxxxxxxxx/ v3: https://lore.kernel.org/bpf/20230719183734.21681-1-larysa.zaremba@xxxxxxxxx/ v2: https://lore.kernel.org/bpf/20230703181226.19380-1-larysa.zaremba@xxxxxxxxx/ v1: https://lore.kernel.org/all/20230512152607.992209-1-larysa.zaremba@xxxxxxxxx/ Changes since v3: - use XDP_CHECKSUM_VALID_LVL0 + csum_level instead of csum_level + 1 - fix spelling mistakes - read XDP timestamp unconditionally - add TO_STR() macro Changes since v2: - redesign checksum hint, so now it gives full status - rename vlan_tag -> vlan_tci, where applicable - use open_netns() and close_netns() in xdp_metadata - improve VLAN hint documentation - replace CFI with DEI - use VLAN_VID_MASK in xdp_metadata - make vlan_get_tag() return -ENODATA - remove unused rx_ptype in ice_xsk.c - fix ice timestamp code division between patches Changes since v1: - directly return RX hash, RX timestamp and RX checksum status in skb-common functions - use intermediate enum value for checksum status in ice - get rid of ring structure dependency in ice kfunc implementation - make variables const, when possible, in ice implementation - use -ENODATA instead of -EOPNOTSUPP for driver implementation - instead of having 2 separate functions for c-tag and s-tag, use 1 function that outputs both VLAN tag and protocol ID - improve documentation for introduced hints - update xdp_metadata selftest to test new hints - implement new hints in veth, so they can be tested in xdp_metadata - parse VLAN tag in xdp_hw_metadata Aleksander Lobakin (1): net, xdp: allow metadata > 32 Larysa Zaremba (17): ice: make RX hash reading code more reusable ice: make RX HW timestamp reading code more reusable ice: make RX checksum checking code more reusable ice: Make ptype internal to descriptor info processing ice: Introduce ice_xdp_buff ice: Support HW timestamp hint ice: Support RX hash XDP hint ice: Support XDP hints in AF_XDP ZC mode xdp: Add VLAN tag hint ice: Implement VLAN tag hint ice: use VLAN proto from ring packet context in skb path xdp: Add checksum hint ice: Implement checksum hint selftests/bpf: Allow VLAN packets in xdp_hw_metadata selftests/bpf: Add flags and new hints to xdp_hw_metadata veth: Implement VLAN tag and checksum XDP hint net: make vlan_get_tag() return -ENODATA instead of -EINVAL Yonghong Song (3): docs/bpf: Add documentation for new instructions bpf: Fix compilation warning with -Wparentheses selftests/bpf: Enable test test_progs-cpuv4 for gcc build kernel -- 2.41.0
