From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 3C2EAA84C for ; Thu, 25 Jan 2018 20:12:55 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Jan 2018 11:12:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,413,1511856000"; d="scan'208";a="13164842" Received: from dpdk06.sh.intel.com ([10.67.110.196]) by fmsmga008.fm.intel.com with ESMTP; 25 Jan 2018 11:12:53 -0800 From: Jianfeng Tan To: dev@dpdk.org Cc: anatoly.burakov@intel.com, bruce.richardson@intel.com, konstantin.ananyev@intel.com, thomas@monjalon.net, Jianfeng Tan Date: Thu, 25 Jan 2018 19:14:42 +0000 Message-Id: <1516907684-118975-1-git-send-email-jianfeng.tan@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1512067450-59203-1-git-send-email-jianfeng.tan@intel.com> References: <1512067450-59203-1-git-send-email-jianfeng.tan@intel.com> Subject: [dpdk-dev] [PATCH v4 0/2] generic channel for multi-process communication 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: Thu, 25 Jan 2018 19:12:56 -0000 v3->v4: - Drop the patch 3 on vfio communication (postponed). - Change names from rte_eal_mp_* -> rte_mp_* as suggested by Thomas. - Add nb_sent and nb_received in struct rte_mp_reply. - Standardize the return val of sendmsg, request, reply: 0 on sucess, (-1) on failure. - If we found an peer error when we send msg in primary, we try to remove the secondary socket; as there is no sync mechanism there (cannot do flock like regular file for socket file), we use a more complex socket name (with tsc in it). - Some other small changes. v2->v3: - Add pre-check for each APIs. - Remove the limitation of 8 secondary processes by: discard original register/unregister mechanism of secondary process, instead, primary discoveries secondary processes by looking up the folder for regex match. - Previous implementation use two sockets for msg and request, this version just uses one socket. And receive all kinds of messages in mp thread. v1->v2: (Address comments from Anatoly and Konstantin) - Use datagram unix socket to supersede stream unix socket + epoll. - Change the secondary add/del mechanism as now we use connection-less channel. - Add mp_mutex_action to sync action register/unregister/reference. - Limit max length of action name to 64B. - New APIs for synchronous communication: rte_eal_mp_request/rte_eal_mp_reply. - Formalize the errno handle. - Some other small issues. This patchset adds a generic channel for multi-process (primary/secondary) communication. Patch 1: addess the purpose and howto; Patch 2: add a syncrhonous way for the requests which need a immediate response. Jianfeng Tan (2): eal: add synchronous multi-process communication vfio: use the generic multi-process channel doc/guides/rel_notes/release_18_02.rst | 2 + lib/librte_eal/common/eal_common_proc.c | 254 +++++++++++++-- lib/librte_eal/common/include/rte_eal.h | 58 +++- lib/librte_eal/linuxapp/eal/eal.c | 14 +- lib/librte_eal/linuxapp/eal/eal_vfio.c | 169 ++++------ lib/librte_eal/linuxapp/eal/eal_vfio.h | 15 +- lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c | 410 ++++--------------------- lib/librte_eal/rte_eal_version.map | 2 + 8 files changed, 429 insertions(+), 495 deletions(-) -- 2.7.4