From patchwork Mon Dec 2 14:57:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Feng X-Patchwork-Id: 63500 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id D7CBFA04B5; Mon, 2 Dec 2019 15:57:18 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 216511BE84; Mon, 2 Dec 2019 15:57:18 +0100 (CET) Received: from mail-pf1-f194.google.com (mail-pf1-f194.google.com [209.85.210.194]) by dpdk.org (Postfix) with ESMTP id CA84A2BD8 for ; Mon, 2 Dec 2019 15:57:16 +0100 (CET) Received: by mail-pf1-f194.google.com with SMTP id s18so4420752pfm.4 for ; Mon, 02 Dec 2019 06:57:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=smartx-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:to:cc:subject:date:message-id :content-transfer-encoding; bh=+1w6lzS3KUR6dutT1k18uWxJ0u9OOwt/0s4YzZIvoJU=; b=BxFNATug54d6olAkNTe5wa28a9403ckt02ja/PpI9EsNYBpZJ19uImg2CdZ/itoKjd /0AoF/ptCEacwjn8X8tcxZtrkAVfBWza/up386Oy0tF+5nNLJ2HuhHUaeisXvPselvem JVUCpeycMHgexySGVWI2b1fH9AlVAsG7tvjQgqQkSF9KxDpPuTS6HEczgvuaA+j22ynN alfw7bT4Jd0TLsC91CLWKPtzhFvmmX3NHKF/XTDbVEG89CtTEN07rfDg1Gz/wq76Os/z JS2rbMWlnhz+lylrJO7Qo2DO5UytoxyjbkNjXKpKx3+Y6wscZWcIrk3kSCaymVKGT0hA G0hw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :content-transfer-encoding; bh=+1w6lzS3KUR6dutT1k18uWxJ0u9OOwt/0s4YzZIvoJU=; b=lmmSE1InKYLmY+myZYvTGSBx8yPOisPY7R/88X2DyhfEBFD1cerJqe4EE886O0MXvN mbDf9+B+4WU69d3YhgyNfGCNU+LwHp6YDfvp12Gm2nP/JnqAAa9juhd/GI7JE4ocCQF3 YvJKvHVWB3zGvBIs5Ff3+B+DhIn3uXDOMsf1CSDNlXd/xG0x82EQea0Blp7+5m9/AbMo Pw6ODlIwqtk8J7VqBOKBqDqBgiZb+glXRp85biU+JF59CJMB0EPYRMbqf/trbHHHKm7/ /kmJFfU83u9PE5ouo6w5SOpyNzBL6IBPbBK6yTnmx85yjuem4TwBeSsW6aFsqA/26bCP ubaA== MIME-Version: 1.0 X-Gm-Message-State: APjAAAX8jwVYO81ujgce9PZsIB+sqIZ8VvDbNkZd2cwBHvtEy2qL3aA1 XnKzPwX2/Qp2xcLL3LzoLg613DGH1M8V3i+XEwlJpChVV2rTWtEN4QIvJZMfe6v6MwTZz/KZ X-Google-Smtp-Source: APXvYqxxrDtdL0H5bBe3Dc99hp+S7m5mE12WVIuKDvA1/SVMKlB6Xeo8SdaCHP31l/kSqg1PeC9TPg== X-Received: by 2002:aa7:9839:: with SMTP id q25mr11853057pfl.161.1575298635727; Mon, 02 Dec 2019 06:57:15 -0800 (PST) Received: from 31_216.localdomain ([23.98.38.159]) by smtp.gmail.com with ESMTPSA id b11sm34040688pfd.83.2019.12.02.06.57.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Dec 2019 06:57:14 -0800 (PST) From: Li Feng To: Maxime Coquelin , Tiwei Bie , Zhihong Wang Cc: dev@dpdk.org, Li Feng Date: Mon, 2 Dec 2019 22:57:35 +0800 Message-Id: <20191202145735.9763-1-fengli@smartx.com> X-Mailer: git-send-email 2.11.0 Subject: [dpdk-dev] [PATCH] vhost: add config change slave msg support 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" This msg is used to notify qemu that should get the config of backend. For example, vhost-user-blk uses this msg to notify guest os the compacity of backend has changed. Signed-off-by: Li Feng --- lib/librte_vhost/vhost_user.c | 31 +++++++++++++++++++++++++++++++ lib/librte_vhost/vhost_user.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 0cfb8b792..4126fa32d 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -2840,6 +2840,37 @@ vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm) return 0; } +static int +vhost_user_slave_config_change(struct virtio_net *dev) +{ + int ret; + struct VhostUserMsg msg = { + .request.slave = VHOST_USER_SLAVE_CONFIG_CHANGE_MSG, + .flags = VHOST_USER_VERSION, + .size = 0, + }; + + ret = send_vhost_message(dev->slave_req_fd, &msg); + if (ret < 0) { + RTE_LOG(ERR, VHOST_CONFIG, + "Failed to send config change (%d)\n", + ret); + return ret; + } + + return 0; +} + +int +rte_vhost_user_slave_config_change(int vid) +{ + struct virtio_net *dev; + dev = get_device(vid); + if (!dev) + return -ENODEV; + return vhost_user_slave_config_change(dev); +} + static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev, int index, int fd, uint64_t offset, diff --git a/lib/librte_vhost/vhost_user.h b/lib/librte_vhost/vhost_user.h index 6563f7315..5c1bb2138 100644 --- a/lib/librte_vhost/vhost_user.h +++ b/lib/librte_vhost/vhost_user.h @@ -62,6 +62,7 @@ typedef enum VhostUserRequest { typedef enum VhostUserSlaveRequest { VHOST_USER_SLAVE_NONE = 0, VHOST_USER_SLAVE_IOTLB_MSG = 1, + VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2, VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3, VHOST_USER_SLAVE_MAX } VhostUserSlaveRequest; @@ -158,6 +159,7 @@ typedef struct VhostUserMsg { /* vhost_user.c */ int vhost_user_msg_handler(int vid, int fd); int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm); +int rte_vhost_user_slave_config_change(int vid); /* socket.c */ int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int max_fds,