From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id B75672B87 for ; Fri, 1 Mar 2019 09:12:42 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Mar 2019 00:12:39 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,426,1544515200"; d="scan'208";a="147594722" Received: from yexl-server.sh.intel.com ([10.67.110.206]) by fmsmga002.fm.intel.com with ESMTP; 01 Mar 2019 00:12:38 -0800 From: Xiaolong Ye To: dev@dpdk.org Cc: Qi Zhang , Xiaolong Ye Date: Fri, 1 Mar 2019 16:09:41 +0800 Message-Id: <20190301080947.91086-1-xiaolong.ye@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH v1 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: , X-List-Received-Date: Fri, 01 Mar 2019 08:12:43 -0000 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 bpf-next/master. [3] - Now i40e and ixgbe drivers have supported zero copy mode. Change logs =========== 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 latest bpf-next/master, 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. extra steps to build dpdk Add below lines to drivers/net/af_xdp/Makefile CFLAGS += -I//tools/include CFLAGS += -I//tools/lib/bpf add below line to config/common_linuxapp to enble the config for af_xdp pmd CONFIG_RTE_LIBRTE_PMD_AF_XDP=y 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/ [3] https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=143bdc2e27b44d2559596424bfb017d578be33eb Xiaolong Ye (6): net/af_xdp: introduce AF_XDP PMD driver lib/mbuf: enable parse flags when create mempool 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 + doc/guides/nics/af_xdp.rst | 43 + doc/guides/rel_notes/release_18_11.rst | 7 + drivers/net/Makefile | 1 + drivers/net/af_xdp/Makefile | 31 + drivers/net/af_xdp/meson.build | 7 + drivers/net/af_xdp/rte_eth_af_xdp.c | 988 ++++++++++++++++++ drivers/net/af_xdp/rte_pmd_af_xdp_version.map | 4 + lib/librte_mbuf/rte_mbuf.c | 15 +- lib/librte_mbuf/rte_mbuf.h | 8 +- lib/librte_mempool/rte_mempool.c | 3 + lib/librte_mempool/rte_mempool.h | 1 + mk/rte.app.mk | 1 + 17 files changed, 1139 insertions(+), 11 deletions(-) create mode 100644 doc/guides/nics/af_xdp.rst 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