From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikolay Nikolaev Subject: [PATCH v1 5/5] vhost: message handling implemented as a callback array Date: Tue, 26 Jun 2018 19:19:38 +0300 Message-ID: <153002997827.22089.15583649737397622971.stgit@T460> References: <153002988259.22089.8523468795459281187.stgit@T460> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: dev@dpdk.org To: maxime.coquelin@redhat.com, tiwei.bie@intel.com, zhihong.wang@intel.com Return-path: Received: from mail-wr0-f193.google.com (mail-wr0-f193.google.com [209.85.128.193]) by dpdk.org (Postfix) with ESMTP id B1F391BB92 for ; Tue, 26 Jun 2018 18:19:40 +0200 (CEST) Received: by mail-wr0-f193.google.com with SMTP id p12-v6so16224645wrn.11 for ; Tue, 26 Jun 2018 09:19:40 -0700 (PDT) In-Reply-To: <153002988259.22089.8523468795459281187.stgit@T460> 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 --- lib/librte_vhost/vhost_user.c | 144 ++++++++++++++++------------------------- 1 file changed, 55 insertions(+), 89 deletions(-) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index dd47d84c7..e62164d63 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -1379,6 +1379,36 @@ vhost_user_iotlb_msg(struct virtio_net **pdev, VhostUserMsg *msg) return VH_RESULT_OK; } +typedef int (*message_handler)(struct virtio_net **pdev, VhostUserMsg * msg); +static message_handler 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, + [VHOST_USER_CRYPTO_CREATE_SESS] = NULL, + [VHOST_USER_CRYPTO_CLOSE_SESS] = NULL, +}; + + /* return bytes# of read on success or negative val on failure. */ static int read_vhost_message(int sockfd, VhostUserMsg *msg) @@ -1623,97 +1653,33 @@ 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; + int request = msg.request.master; + if (vhost_message_handlers[request]) { + ret = vhost_message_handlers[request](&dev, &msg); - 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; - - default: - ret = -1; - break; + switch (ret) { + case VH_RESULT_ERR: + RTE_LOG(ERR, VHOST_CONFIG, + "Processing %s failed.\n", + vhost_message_str[request]); + return -1; + 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); + return -1; } skip_to_post_handle: