From patchwork Thu Jul 19 19:13:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikolay Nikolaev X-Patchwork-Id: 43223 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A3A675F33; Thu, 19 Jul 2018 21:13:58 +0200 (CEST) Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) by dpdk.org (Postfix) with ESMTP id 496405F30 for ; Thu, 19 Jul 2018 21:13:57 +0200 (CEST) Received: by mail-wr1-f68.google.com with SMTP id c13-v6so9110708wrt.1 for ; Thu, 19 Jul 2018 12:13:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:date:message-id:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=KhfDSsoQpeIb857jFSN9TRCgwg/w+w61ixZV4X4+GjU=; b=mlE+6Br9bp5MOeRlRLyksQRAA9ZUErv7VE8CMreCwb9UDuEiPuWJe7nGSNJ5IYgAEe xUJnATKH+493O2AjKn7zllwTpDjSlutxSVRju5IboRC5nD3E7IM2fewW6TgFcoSAb4QI J5jRT/s0XixgYUBTUUVcPIARXefKpFHRfoS2ucAv+QO/VOgqNwWMXjLydlcG3PNzsxa4 OJE7aLtnujWCmP1IqeJfF7wcBlnqZvv4EuD0WJRQwOpFGTiS4NseVzc0H+fLZmivQBZE XF4PMq6BqzkEmjPaa7uvUu+3C7p5s2ge3EC4VkbPLo6HGaohUUoLInHGIPZ2r/lWy55O ZgkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:date:message-id:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=KhfDSsoQpeIb857jFSN9TRCgwg/w+w61ixZV4X4+GjU=; b=lFfk/haPlQJOzYiW308Sec8ORTZzznHqrjN7LwX4iMoMXHrqp0rYyPE2VAc3xgXPpT H7DMyYiAV5hh8dTTdatiWJ+nCizHaxhq3hPZKzZHgyRQU2v//shDIFR2YlemxCo3B6xE 9LPFVhqLmu0jQNlwziScWBVfY5rYF8LV1pZa0J3M2wgFoGGWumyV4FzIC7znjDCNLhsm 3Ny0Fs+inpRhdf6hXU7XIdenuhTdGaIlKbnPxXPjjFhR1FUvfSYe2PaKaX0S7R0gmuGL V3IaMsXnL2D5vedhx7yYJ43jpquyXC2NBzIadga3TtSf3cH85qu5/lsLeSnAt4HzoL0A hu9w== X-Gm-Message-State: AOUpUlEyt9g5X+gIIwkmUEaArCQsbE0rcThtcIcCUbk4EngDeYq0r6wI p9TGan09rLPGCnzNAHQWhJsUcWJcy6M= X-Google-Smtp-Source: AAOMgpfHAU7UY5zdqgTyU2cPZDvi1wuk0dpixn0Be/X2HTm/yCmTOUoLf3fsELStOJXyuCz7KRK88g== X-Received: by 2002:adf:9aeb:: with SMTP id a98-v6mr8104300wrc.110.1532027636822; Thu, 19 Jul 2018 12:13:56 -0700 (PDT) Received: from [127.0.1.1] ([82.146.27.14]) by smtp.gmail.com with ESMTPSA id y191-v6sm467188wmy.4.2018.07.19.12.13.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 19 Jul 2018 12:13:56 -0700 (PDT) From: Nikolay Nikolaev To: maxime.coquelin@redhat.com, tiwei.bie@intel.com, zhihong.wang@intel.com Cc: dev@dpdk.org Date: Thu, 19 Jul 2018 22:13:55 +0300 Message-ID: <153202763503.21481.6074577075024787339.stgit@T460> In-Reply-To: <153202755842.21481.1772155561595981441.stgit@T460> References: <153202755842.21481.1772155561595981441.stgit@T460> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v2 5/5] vhost: message handling implemented as a callback array 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" Introduce vhost_message_handlers, which maps the message request type to the message handler. Then replace the switch construct with a map and call. Signed-off-by: Nikolay Nikolaev Reviewed-by: Maxime Coquelin --- lib/librte_vhost/vhost_user.c | 143 +++++++++++++++-------------------------- 1 file changed, 54 insertions(+), 89 deletions(-) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 6b39d1e30..1b164df27 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -1466,6 +1466,34 @@ vhost_user_iotlb_msg(struct virtio_net **pdev, VhostUserMsg *msg) return VH_RESULT_OK; } +typedef int (*vhost_message_handler_t)(struct virtio_net **pdev, VhostUserMsg * msg); +static vhost_message_handler_t vhost_message_handlers[VHOST_USER_MAX] = { + [VHOST_USER_NONE] = NULL, + [VHOST_USER_GET_FEATURES] = vhost_user_get_features, + [VHOST_USER_SET_FEATURES] = vhost_user_set_features, + [VHOST_USER_SET_OWNER] = vhost_user_set_owner, + [VHOST_USER_RESET_OWNER] = vhost_user_reset_owner, + [VHOST_USER_SET_MEM_TABLE] = vhost_user_set_mem_table, + [VHOST_USER_SET_LOG_BASE] = vhost_user_set_log_base, + [VHOST_USER_SET_LOG_FD] = vhost_user_set_log_fd, + [VHOST_USER_SET_VRING_NUM] = vhost_user_set_vring_num, + [VHOST_USER_SET_VRING_ADDR] = vhost_user_set_vring_addr, + [VHOST_USER_SET_VRING_BASE] = vhost_user_set_vring_base, + [VHOST_USER_GET_VRING_BASE] = vhost_user_get_vring_base, + [VHOST_USER_SET_VRING_KICK] = vhost_user_set_vring_kick, + [VHOST_USER_SET_VRING_CALL] = vhost_user_set_vring_call, + [VHOST_USER_SET_VRING_ERR] = vhost_user_set_vring_err, + [VHOST_USER_GET_PROTOCOL_FEATURES] = vhost_user_get_protocol_features, + [VHOST_USER_SET_PROTOCOL_FEATURES] = vhost_user_set_protocol_features, + [VHOST_USER_GET_QUEUE_NUM] = vhost_user_get_queue_num, + [VHOST_USER_SET_VRING_ENABLE] = vhost_user_set_vring_enable, + [VHOST_USER_SEND_RARP] = vhost_user_send_rarp, + [VHOST_USER_NET_SET_MTU] = vhost_user_net_set_mtu, + [VHOST_USER_SET_SLAVE_REQ_FD] = vhost_user_set_req_fd, + [VHOST_USER_IOTLB_MSG] = vhost_user_iotlb_msg, +}; + + /* return bytes# of read on success or negative val on failure. */ static int read_vhost_message(int sockfd, VhostUserMsg *msg) @@ -1618,6 +1646,7 @@ vhost_user_msg_handler(int vid, int fd) int ret; int unlock_required = 0; uint32_t skip_master = 0; + int request; dev = get_device(vid); if (dev == NULL) @@ -1710,97 +1739,33 @@ vhost_user_msg_handler(int vid, int fd) goto skip_to_post_handle; } - switch (msg.request.master) { - case VHOST_USER_GET_FEATURES: - ret = vhost_user_get_features(&dev, &msg); - send_vhost_reply(fd, &msg); - break; - case VHOST_USER_SET_FEATURES: - ret = vhost_user_set_features(&dev, &msg); - if (ret) - return -1; - break; - - case VHOST_USER_GET_PROTOCOL_FEATURES: - ret = vhost_user_get_protocol_features(&dev, &msg); - send_vhost_reply(fd, &msg); - break; - case VHOST_USER_SET_PROTOCOL_FEATURES: - ret = vhost_user_set_protocol_features(&dev, &msg); - break; - - case VHOST_USER_SET_OWNER: - ret = vhost_user_set_owner(&dev, &msg); - break; - case VHOST_USER_RESET_OWNER: - ret = vhost_user_reset_owner(&dev, &msg); - break; - - case VHOST_USER_SET_MEM_TABLE: - ret = vhost_user_set_mem_table(&dev, &msg); - break; - - case VHOST_USER_SET_LOG_BASE: - ret = vhost_user_set_log_base(&dev, &msg); - send_vhost_reply(fd, &msg); - break; - case VHOST_USER_SET_LOG_FD: - ret = vhost_user_set_log_fd(&dev, &msg); - break; - - case VHOST_USER_SET_VRING_NUM: - ret = vhost_user_set_vring_num(&dev, &msg); - break; - case VHOST_USER_SET_VRING_ADDR: - ret = vhost_user_set_vring_addr(&dev, &msg); - break; - case VHOST_USER_SET_VRING_BASE: - ret = vhost_user_set_vring_base(&dev, &msg); - break; - - case VHOST_USER_GET_VRING_BASE: - ret = vhost_user_get_vring_base(&dev, &msg); - send_vhost_reply(fd, &msg); - break; - - case VHOST_USER_SET_VRING_KICK: - ret = vhost_user_set_vring_kick(&dev, &msg); - break; - case VHOST_USER_SET_VRING_CALL: - ret = vhost_user_set_vring_call(&dev, &msg); - break; - - case VHOST_USER_SET_VRING_ERR: - ret = vhost_user_set_vring_err(&dev, &msg); - break; - - case VHOST_USER_GET_QUEUE_NUM: - ret = vhost_user_get_queue_num(&dev, &msg); - send_vhost_reply(fd, &msg); - break; - - case VHOST_USER_SET_VRING_ENABLE: - ret = vhost_user_set_vring_enable(&dev, &msg); - break; - case VHOST_USER_SEND_RARP: - ret = vhost_user_send_rarp(&dev, &msg); - break; - - case VHOST_USER_NET_SET_MTU: - ret = vhost_user_net_set_mtu(&dev, &msg); - break; - - case VHOST_USER_SET_SLAVE_REQ_FD: - ret = vhost_user_set_req_fd(&dev, &msg); - break; - - case VHOST_USER_IOTLB_MSG: - ret = vhost_user_iotlb_msg(&dev, &msg); - break; + request = msg.request.master; + if (request > VHOST_USER_NONE && request < VHOST_USER_MAX) { + if (!vhost_message_handlers[request]) + goto skip_to_post_handle; + ret = vhost_message_handlers[request](&dev, &msg); - default: + switch (ret) { + case VH_RESULT_ERR: + RTE_LOG(ERR, VHOST_CONFIG, + "Processing %s failed.\n", + vhost_message_str[request]); + case VH_RESULT_OK: + RTE_LOG(DEBUG, VHOST_CONFIG, + "Processing %s succeeded.\n", + vhost_message_str[request]); + break; + case VH_RESULT_REPLY: + RTE_LOG(INFO, VHOST_CONFIG, + "Processing %s succeeded and needs reply.\n", + vhost_message_str[request]); + send_vhost_reply(fd, &msg); + break; + } + } else { + RTE_LOG(ERR, VHOST_CONFIG, + "Requested invalid message type %d.\n", request); ret = -1; - break; } skip_to_post_handle: