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a=rsa-sha256; c=relaxed/relaxed; d=estab.onmicrosoft.com; s=selector2-estab-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=CihBvuD+7hlBQHQK1ZNt0WQPvDlcobYidD3EXpLi02c=; b=AXmAw00SQGopr7zFQWPLFVtUtwAWGP0lok2zIZ//3oCjUjsi5GTihyTww24hYdK0Yrbil1LknaXIZfzUBMi+3Nyqf7ug6MUOMgtpg+y0xj4OJQkEnAmkqVIbpwdF95vYys2Bkf+gIb9wgXk+uZiOyajjg1uN1MHWJRMP1V5/d/I= X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (1024-bit key) header.d=estab.onmicrosoft.com header.i=@estab.onmicrosoft.com header.a=rsa-sha256 header.s=selector2-estab-onmicrosoft-com header.b=AXmAw00S X-Mailman-Original-Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=est.tech; Subject: [Intel-wired-lan] [PATCH iwl-next v3 0/4] igb: Add support for AF_XDP zero-copy X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jesper Dangaard Brouer , Daniel Borkmann , netdev@vger.kernel.org, Jonathan Lemon , John Fastabend , Jesse Brandeburg , Alexei Starovoitov , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Eric Dumazet , Sriram Yagnaraman , Tony Nguyen , Jakub Kicinski , Simon Horman , intel-wired-lan@lists.osuosl.org, bpf@vger.kernel.org, Paolo Abeni , "David S . Miller" , Magnus Karlsson Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" The first couple of patches adds helper funcctions to prepare for AF_XDP zero-copy support which comes in the last couple of patches, one each for Rx and TX paths. As mentioned in v1 patchset [0], I don't have access to an actual IGB device to provide correct performance numbers. I have used Intel 82576EB emulator in QEMU [1] to test the changes to IGB driver. The tests use one isolated vCPU for RX/TX and one isolated vCPU for the xdp-sock application [2]. Hope these measurements provide at the least some indication on the increase in performance when using ZC, especially in the TX path. It would be awesome if someone with a real IGB NIC can test the patch. AF_XDP performance using 64 byte packets in Kpps. Benchmark: XDP-SKB XDP-DRV XDP-DRV(ZC) rxdrop 220 235 350 txpush 1.000 1.000 410 l2fwd 1.000 1.000 200 AF_XDP performance using 1500 byte packets in Kpps. Benchmark: XDP-SKB XDP-DRV XDP-DRV(ZC) rxdrop 200 210 310 txpush 1.000 1.000 410 l2fwd 0.900 1.000 160 [0]: https://lore.kernel.org/intel-wired-lan/20230704095915.9750-1-sriram.yagnaraman@est.tech/ [1]: https://www.qemu.org/docs/master/system/devices/igb.html [2]: https://github.com/xdp-project/bpf-examples/tree/master/AF_XDP-example v2->v3: - Avoid TX unit hang when using AF_XDP zero-copy by setting time_stamp on the tx_buffer_info - Fix uninitialized nb_buffs (Simon Horman) v1->v2: - Use batch XSK APIs (Maciej Fijalkowski) - Follow reverse xmas tree convention and remove the ternary operator use (Simon Horman) Sriram Yagnaraman (4): igb: prepare for AF_XDP zero-copy support igb: Introduce XSK data structures and helpers igb: add AF_XDP zero-copy Rx support igb: add AF_XDP zero-copy Tx support drivers/net/ethernet/intel/igb/Makefile | 2 +- drivers/net/ethernet/intel/igb/igb.h | 35 +- drivers/net/ethernet/intel/igb/igb_main.c | 181 ++++++-- drivers/net/ethernet/intel/igb/igb_xsk.c | 522 ++++++++++++++++++++++ 4 files changed, 694 insertions(+), 46 deletions(-) create mode 100644 drivers/net/ethernet/intel/igb/igb_xsk.c -- 2.34.1 _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan