From patchwork Tue Dec 5 21:08:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Larysa Zaremba X-Patchwork-Id: 13480734 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="NliZEoxb" Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A68B18F; Tue, 5 Dec 2023 13:10:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701810647; x=1733346647; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Kj6pEmB338Ic4Gh12ntrKi0G9SJXjBINIhr4CPVXh0Y=; b=NliZEoxbubrQbkHFffJaJJQWQ8dJnC4YiOSq70bZpNzYBKpz42xbeZZn uBFkm/WipUVwBtcipxvQjoSzSBW/ZoMPf5sRakLwebZhXwuk1QGoiKXFC XJityl4GB4nBESi8U/s8UcfNxxGoPkfpIt+n/w/A9Uo/lE9dJaBzAQy1s WIiAcbUUbLRumYsfkut0dLCNJ5hkUB4ruaeeasvvnm6RNJozw6JrFvzqK QXixzNX1BBw6TMB7A9zm4ylcBTvewheOwc4jltpivno32fihP4vBQNQdF zP6rQ0QB0okUrwXP4BtSBpDD0xleEymthV/nh4hIrI2CzyT0yygl9ClXA A==; X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="373421783" X-IronPort-AV: E=Sophos;i="6.04,253,1695711600"; d="scan'208";a="373421783" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2023 13:10:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="774757572" X-IronPort-AV: E=Sophos;i="6.04,253,1695711600"; d="scan'208";a="774757572" Received: from irvmail002.ir.intel.com ([10.43.11.120]) by fmsmga007.fm.intel.com with ESMTP; 05 Dec 2023 13:10:41 -0800 Received: from lincoln.igk.intel.com (lincoln.igk.intel.com [10.102.21.235]) by irvmail002.ir.intel.com (Postfix) with ESMTP id 8981834328; Tue, 5 Dec 2023 21:10:38 +0000 (GMT) From: Larysa Zaremba To: bpf@vger.kernel.org Cc: Larysa Zaremba , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, David Ahern , Jakub Kicinski , Willem de Bruijn , Jesper Dangaard Brouer , Anatoly Burakov , Alexander Lobakin , Magnus Karlsson , Maryam Tahhan , xdp-hints@xdp-project.net, netdev@vger.kernel.org, Willem de Bruijn , Alexei Starovoitov , Tariq Toukan , Saeed Mahameed , Maciej Fijalkowski Subject: [PATCH bpf-next v8 00/18] XDP metadata via kfuncs for ice + VLAN hint Date: Tue, 5 Dec 2023 22:08:29 +0100 Message-ID: <20231205210847.28460-1-larysa.zaremba@intel.com> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net 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 VLAN tag with protocol XDP hint, it now be accessed by XDP and userspace (AF_XDP) programs. They can also be checked with xdp_metadata test and xdp_hw_metadata program. Impact of these patches on ice performance: ZC: * Full hints implementation decreases pps in ZC mode by less than 3% (64B, rxdrop) skb (packets with invalid IP, dropped by stack): * Overall, patchset improves peak performance in skb mode by about 0.5% [0] https://patchwork.kernel.org/project/netdevbpf/cover/20230119221536.3349901-1-sdf@google.com/ v7: https://lore.kernel.org/bpf/20231115175301.534113-1-larysa.zaremba@intel.com/ v6: https://lore.kernel.org/bpf/20231012170524.21085-1-larysa.zaremba@intel.com/ Intermediate RFC v2: https://lore.kernel.org/bpf/20230927075124.23941-1-larysa.zaremba@intel.com/ Intermediate RFC v1: https://lore.kernel.org/bpf/20230824192703.712881-1-larysa.zaremba@intel.com/ v5: https://lore.kernel.org/bpf/20230811161509.19722-1-larysa.zaremba@intel.com/ v4: https://lore.kernel.org/bpf/20230728173923.1318596-1-larysa.zaremba@intel.com/ v3: https://lore.kernel.org/bpf/20230719183734.21681-1-larysa.zaremba@intel.com/ v2: https://lore.kernel.org/bpf/20230703181226.19380-1-larysa.zaremba@intel.com/ v1: https://lore.kernel.org/all/20230512152607.992209-1-larysa.zaremba@intel.com/ Changes since v7: * shorten timestamp assignment in ice * change first argument of ice_fill_rx_descs back to xsk_buff_pool * fix kernel-doc for ice_run_xdp_zc * add missing XSK_CHECK_PRIV_TYPE() in ice * resolved selftests merge conflicts with TX hints * AF_INET patch adds new packet generation, not replaces AF_XDP one * fix destination port in xdp_metadata Changes since v6: * add ability to fill cb of all xdp_buffs in xsk_buff_pool * place just pointer to packet context in ice_xdp_buff * add const qualifiers in veth implementation * generate uapi for VLAN hint Changes since v5: * drop checksum hint from the patchset entirely * Alex's patch that lifts the data_meta size limitation is no longer required in this patchset, so will be sent separately * new patch: hide some ice hints code behind a static key * fix several bugs in ZC mode (ice) * change argument order in VLAN hint kfunc (tci, proto -> proto, tci) * cosmetic changes * analyze performance impact Changes since v4: * Drop the concept of partial checksum from the hint design * Drop the concept of checksum level from the hint design 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 Larysa Zaremba (17): ice: make RX hash reading code more reusable ice: make RX HW timestamp reading 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 veth: Implement VLAN tag XDP hint net: make vlan_get_tag() return -ENODATA instead of -EINVAL mlx5: implement VLAN tag XDP hint selftests/bpf: Allow VLAN packets in xdp_hw_metadata selftests/bpf: Add flags and VLAN hint to xdp_hw_metadata selftests/bpf: Add AF_INET packet generation to xdp_metadata selftests/bpf: Check VLAN tag and proto in xdp_metadata Maciej Fijalkowski (1): xsk: add functions to fill control buffer Documentation/netlink/specs/netdev.yaml | 4 + Documentation/networking/xdp-rx-metadata.rst | 8 +- drivers/net/ethernet/intel/ice/ice.h | 2 + drivers/net/ethernet/intel/ice/ice_base.c | 15 + .../net/ethernet/intel/ice/ice_lan_tx_rx.h | 412 +++++++++--------- drivers/net/ethernet/intel/ice/ice_main.c | 21 + drivers/net/ethernet/intel/ice/ice_ptp.c | 22 +- drivers/net/ethernet/intel/ice/ice_ptp.h | 16 +- drivers/net/ethernet/intel/ice/ice_txrx.c | 19 +- drivers/net/ethernet/intel/ice/ice_txrx.h | 32 +- drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 207 ++++++++- drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 18 +- drivers/net/ethernet/intel/ice/ice_xsk.c | 17 +- .../net/ethernet/mellanox/mlx5/core/en/xdp.c | 15 + drivers/net/veth.c | 19 + include/linux/if_vlan.h | 4 +- include/linux/mlx5/device.h | 2 +- include/net/xdp.h | 9 + include/net/xdp_sock_drv.h | 17 + include/net/xsk_buff_pool.h | 2 + include/uapi/linux/netdev.h | 3 + net/core/xdp.c | 33 ++ net/xdp/xsk_buff_pool.c | 12 + tools/include/uapi/linux/netdev.h | 3 + tools/net/ynl/generated/netdev-user.c | 1 + .../selftests/bpf/prog_tests/xdp_metadata.c | 134 +++++- .../selftests/bpf/progs/xdp_hw_metadata.c | 38 +- .../selftests/bpf/progs/xdp_metadata.c | 5 + tools/testing/selftests/bpf/testing_helpers.h | 3 + tools/testing/selftests/bpf/xdp_hw_metadata.c | 34 +- tools/testing/selftests/bpf/xdp_metadata.h | 34 +- 31 files changed, 851 insertions(+), 310 deletions(-)