From patchwork Wed Nov 15 17:52:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Larysa Zaremba X-Patchwork-Id: 13457169 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Vzz9a38E" Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 946051A3; Wed, 15 Nov 2023 09:54:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700070862; x=1731606862; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=9FdEklG2WnkdFuLipNpHtzA7mDqqUDLklZ7oPWtrwEM=; b=Vzz9a38EeuReE4LgtpwzdJyne0EkoGTh8/TORjuXW8CR4jaqxE1LTFC+ aV8jERlchyVI2eULhWmSlnDosaNt/d4wrB2IA5Qp9npL2EelPSw0apqKr 64bbd1nQB2I2W/DQ/aB4HAEdnJzC7WqCY+padGJGAxRSwY8PN+EhQLRip 0a0H4jG9+0PZZLG/hMVBZSVEmDu4lLPYVJj1ilRv4SHinddrzAYG1NyS5 fOnQ9VW0vSSTjvUIjcjQybWLpmQ8uM59af/E9UXyChLrHrM0EeZi4OcCI We7HJtcgfjSOkq1UU9vIkJKBi+V0ZvzCeMYwzvO6IHdk31g7McEZphhhs Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10895"; a="422020394" X-IronPort-AV: E=Sophos;i="6.03,305,1694761200"; d="scan'208";a="422020394" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Nov 2023 09:54:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.03,305,1694761200"; d="scan'208";a="12842556" Received: from irvmail002.ir.intel.com ([10.43.11.120]) by orviesa001.jf.intel.com with ESMTP; 15 Nov 2023 09:54:16 -0800 Received: from lincoln.igk.intel.com (lincoln.igk.intel.com [10.102.21.235]) by irvmail002.ir.intel.com (Postfix) with ESMTP id 2CD9C3581D; Wed, 15 Nov 2023 17:54:13 +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 v7 00/18] XDP metadata via kfuncs for ice + VLAN hint Date: Wed, 15 Nov 2023 18:52:42 +0100 Message-ID: <20231115175301.534113-1-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/ 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 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: Use AF_INET for TX in 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 | 14 + .../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 | 209 ++++++++- drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 18 +- drivers/net/ethernet/intel/ice/ice_xsk.c | 29 +- .../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 | 5 +- net/core/xdp.c | 33 ++ net/xdp/xsk_buff_pool.c | 12 + tools/include/uapi/linux/netdev.h | 5 +- tools/net/ynl/generated/netdev-user.c | 1 + .../selftests/bpf/prog_tests/xdp_metadata.c | 184 ++++---- .../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 | 38 +- tools/testing/selftests/bpf/xdp_metadata.h | 34 +- 31 files changed, 825 insertions(+), 407 deletions(-)