From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 6D8BAA05FE for ; Tue, 19 Mar 2019 08:16:56 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 4A05225A1; Tue, 19 Mar 2019 08:16:55 +0100 (CET) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by dpdk.org (Postfix) with ESMTP id 2093411A4 for ; Tue, 19 Mar 2019 08:16:53 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Mar 2019 00:16:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,496,1544515200"; d="scan'208";a="329889924" Received: from yexl-server.sh.intel.com ([10.67.110.206]) by fmsmga005.fm.intel.com with ESMTP; 19 Mar 2019 00:16:50 -0700 From: Xiaolong Ye To: dev@dpdk.org Cc: Qi Zhang , Karlsson Magnus , Topel Bjorn , Xiaolong Ye Date: Tue, 19 Mar 2019 15:12:50 +0800 Message-Id: <20190319071256.26302-1-xiaolong.ye@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190301080947.91086-1-xiaolong.ye@intel.com> References: <20190301080947.91086-1-xiaolong.ye@intel.com> Subject: [dpdk-dev] [PATCH v2 0/6] Introduce AF_XDP PMD X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Content-Type: text/plain; charset="UTF-8" Message-ID: <20190319071250.Nt8dZ1oFXaSRlN1JhduebCSTvL6CKt__-YmQ896OKgg@z> Overview ======== This patchset adds a new PMD driver for AF_XDP which is a proposed faster version of AF_PACKET interface in Linux, see below links [1] [2] for details of AF_XDP introduction: AF_XDP roadmap ============== - AF_XDP is included in upstream kernel since 4.18, and AF_XDP support in libbpf has been merged in v5.1-rc1. - Now i40e and ixgbe drivers have supported zero copy mode. Change logs =========== V2: - Fix a NULL pointer reference crash issue - Fix txonly stop sending traffic in zc mode - Refactor rte_mbuf.c to avoid ABI breakage. - Fix multiple style issues pointed by Ferruh, David, Stephen, Luca. changes vs RFC sent by Qi last Aug: - Re-work base on AF_XDP's interface changes since the new libbpf has provided higher-level APIs that hide many of the details of the AP_XDP uapi. After the rework, it helps to reduce 300+ lines of code. - multi-queues is not supported due to current libbpf doesn't support multi-sockets on a single umem. - No extra steps to load xdp program manually, since the current behavior of libbpf would load a default xdp program when user calls xsk_socket__create. userspace application only needs to handle the cleanup. How to try ========== 1. take the kernel >= v5.1-rc1, build kernel and replace your host kernel with it. make sure you turn on XDP sockets when compiling Networking support --> Networking options --> [ * ] XDP sockets 2. build libbpf in tools/lib/bpf, and copy the libbpf.a and libbpf.so to /usr/lib64 cd tools/lib/bpf make 3. ethtool -L enp59s0f0 combined 1 4. start testpmd ./build/app/testpmd -c 0xc -n 4 --vdev eth_af_xdp,iface=enp59s0f0,queue=0 -- -i --rxq=1 --txq=1 in this case, default xdp program will be loaded and linked to queue 0 of enp59s0f0, network traffics travel to queue 0 will be redirected to af_xdp socket. [1] https://lwn.net/Articles/750845/ [2] https://fosdem.org/2018/schedule/event/af_xdp/ Xiaolong Ye (6): net/af_xdp: introduce AF XDP PMD driver lib/mbuf: introduce helper to create mempool with flags lib/mempool: allow page size aligned mempool net/af_xdp: use mbuf mempool for buffer management net/af_xdp: enable zero copy app/testpmd: add mempool flags parameter MAINTAINERS | 6 + app/test-pmd/parameters.c | 12 + app/test-pmd/testpmd.c | 17 +- app/test-pmd/testpmd.h | 1 + config/common_base | 5 + config/common_linux | 1 + doc/guides/nics/af_xdp.rst | 45 + doc/guides/nics/features/af_xdp.ini | 11 + doc/guides/nics/index.rst | 1 + doc/guides/rel_notes/release_19_05.rst | 7 + doc/guides/testpmd_app_ug/run_app.rst | 4 + drivers/net/Makefile | 1 + drivers/net/af_xdp/Makefile | 33 + drivers/net/af_xdp/meson.build | 21 + drivers/net/af_xdp/rte_eth_af_xdp.c | 1013 +++++++++++++++++ drivers/net/af_xdp/rte_pmd_af_xdp_version.map | 3 + drivers/net/meson.build | 1 + lib/librte_mbuf/rte_mbuf.c | 29 +- lib/librte_mbuf/rte_mbuf.h | 45 + lib/librte_mempool/rte_mempool.c | 3 + lib/librte_mempool/rte_mempool.h | 1 + mk/rte.app.mk | 1 + 22 files changed, 1249 insertions(+), 12 deletions(-) create mode 100644 doc/guides/nics/af_xdp.rst create mode 100644 doc/guides/nics/features/af_xdp.ini create mode 100644 drivers/net/af_xdp/Makefile create mode 100644 drivers/net/af_xdp/meson.build create mode 100644 drivers/net/af_xdp/rte_eth_af_xdp.c create mode 100644 drivers/net/af_xdp/rte_pmd_af_xdp_version.map -- 2.17.1