From patchwork Thu Jun 11 21:37:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 71293 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 5F0D7A00BE; Thu, 11 Jun 2020 23:38:59 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D8D8011A4; Thu, 11 Jun 2020 23:38:36 +0200 (CEST) Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) by dpdk.org (Postfix) with ESMTP id 616951023 for ; Thu, 11 Jun 2020 23:38:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1591911514; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lk1eI29bTrKtrIJtv+rkI2NVjn1lin6XFmILXfF/UPk=; b=SDi+87rDuOtypUltXmTGdoMqsCPzO0STtvXTV+5l9YaRUDTtODBMMcr/Iq3vfVMcMRFuyy 6bJIN0r5PYbEA3HW1CYJkdkMYr2f7cw5vqXr4+ipS5NK2g6vy8bVV/ioybMDmvU7RfczWq leWik18TVHEOpRljP+QpESB3rnPq73M= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-138-qbx46W_WNRqbskD8r-kGRA-1; Thu, 11 Jun 2020 17:38:33 -0400 X-MC-Unique: qbx46W_WNRqbskD8r-kGRA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 96ADD1005512; Thu, 11 Jun 2020 21:38:31 +0000 (UTC) Received: from localhost.localdomain (unknown [10.36.110.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 667841001B0B; Thu, 11 Jun 2020 21:38:28 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, matan@mellanox.com, xiao.w.wang@intel.com, zhihong.wang@intel.com, xiaolong.ye@intel.com, chenbo.xia@intel.com, david.marchand@redhat.com, amorenoz@redhat.com, shreyansh.jain@nxp.com, viacheslavo@mellanox.com, hemant.agrawal@nxp.com, sachin.saxena@nxp.com Cc: Maxime Coquelin Date: Thu, 11 Jun 2020 23:37:41 +0200 Message-Id: <20200611213748.1967029-8-maxime.coquelin@redhat.com> In-Reply-To: <20200611213748.1967029-1-maxime.coquelin@redhat.com> References: <20200611213748.1967029-1-maxime.coquelin@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Subject: [dpdk-dev] [PATCH 07/14] vhost: replace device ID in applications 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 patch replaces the use of vDPA device ID with vDPA device pointer. The goals is to remove the vDPA device ID to avoid condusion with the Vhost ID. Signed-off-by: Maxime Coquelin --- examples/vdpa/main.c | 79 +++++++++++++------------- lib/librte_vhost/rte_vdpa.h | 21 ++++++- lib/librte_vhost/rte_vhost_version.map | 3 +- lib/librte_vhost/vdpa.c | 19 +++++-- 4 files changed, 75 insertions(+), 47 deletions(-) diff --git a/examples/vdpa/main.c b/examples/vdpa/main.c index 8d707c9e2d..4417500d9b 100644 --- a/examples/vdpa/main.c +++ b/examples/vdpa/main.c @@ -26,7 +26,7 @@ struct vdpa_port { char ifname[MAX_PATH_LEN]; - int did; + struct rte_vdpa_device *dev; int vid; uint64_t flags; }; @@ -101,16 +101,23 @@ static int new_device(int vid) { char ifname[MAX_PATH_LEN]; + struct rte_device *dev; int i; rte_vhost_get_ifname(vid, ifname, sizeof(ifname)); for (i = 0; i < MAX_VDPA_SAMPLE_PORTS; i++) { - if (strncmp(ifname, vports[i].ifname, MAX_PATH_LEN) == 0) { - printf("\nnew port %s, did: %d\n", - ifname, vports[i].did); - vports[i].vid = vid; - break; + if (strncmp(ifname, vports[i].ifname, MAX_PATH_LEN)) + continue; + + dev = rte_vdpa_get_rte_device(vports[i].dev); + if (!dev) { + RTE_LOG(ERR, VDPA, + "Failed to get generic device for port %d\n", i); + continue; } + printf("\nnew port %s, device : %s\n", ifname, dev->name); + vports[i].vid = vid; + break; } if (i >= MAX_VDPA_SAMPLE_PORTS) @@ -122,16 +129,24 @@ new_device(int vid) static void destroy_device(int vid) { + struct rte_device *dev; char ifname[MAX_PATH_LEN]; int i; rte_vhost_get_ifname(vid, ifname, sizeof(ifname)); for (i = 0; i < MAX_VDPA_SAMPLE_PORTS; i++) { - if (strcmp(ifname, vports[i].ifname) == 0) { - printf("\ndestroy port %s, did: %d\n", - ifname, vports[i].did); - break; + if (strncmp(ifname, vports[i].ifname, MAX_PATH_LEN)) + continue; + + dev = rte_vdpa_get_rte_device(vports[i].dev); + if (!dev) { + RTE_LOG(ERR, VDPA, + "Failed to get generic device for port %d\n", i); + continue; } + + printf("\ndestroy port %s, device: %s\n", ifname, dev->name); + break; } } @@ -145,8 +160,6 @@ start_vdpa(struct vdpa_port *vport) { int ret; char *socket_path = vport->ifname; - struct rte_vdpa_device *vdev; - int did = vport->did; if (client_mode) vport->flags |= RTE_VHOST_USER_CLIENT; @@ -170,13 +183,7 @@ start_vdpa(struct vdpa_port *vport) "register driver ops failed: %s\n", socket_path); - vdev = rte_vdpa_get_device(did); - if (!vdev) - rte_exit(EXIT_FAILURE, - "vDPA device retrieval failed: %p\n", - vdev); - - ret = rte_vhost_driver_attach_vdpa_device(socket_path, vdev); + ret = rte_vhost_driver_attach_vdpa_device(socket_path, vport->dev); if (ret != 0) rte_exit(EXIT_FAILURE, "attach vdpa device failed: %s\n", @@ -274,35 +281,31 @@ static void cmd_list_vdpa_devices_parsed( struct cmdline *cl, __rte_unused void *data) { - int did; uint32_t queue_num; uint64_t features; struct rte_vdpa_device *vdev; struct rte_device *dev; struct rte_dev_iterator dev_iter; - cmdline_printf(cl, "device id\tdevice name\tqueue num\tsupported features\n"); + cmdline_printf(cl, "device name\tqueue num\tsupported features\n"); RTE_DEV_FOREACH(dev, "class=vdpa", &dev_iter) { - did = rte_vdpa_find_device_id_by_name(dev->name); - if (did < 0) - continue; - vdev = rte_vdpa_get_device(did); + vdev = rte_vdpa_find_device_by_name(dev->name); if (!vdev) continue; if (vdev->ops->get_queue_num(vdev, &queue_num) < 0) { RTE_LOG(ERR, VDPA, "failed to get vdpa queue number " - "for device id %d.\n", did); + "for device %s.\n", dev->name); continue; } if (vdev->ops->get_features(vdev, &features) < 0) { RTE_LOG(ERR, VDPA, "failed to get vdpa features " - "for device id %d.\n", did); + "for device %s.\n", dev->name); continue; } - cmdline_printf(cl, "%d\t\t%s\t\t%" PRIu32 "\t\t0x%" PRIx64 "\n", - did, dev->name, queue_num, features); + cmdline_printf(cl, "%s\t\t%" PRIu32 "\t\t0x%" PRIx64 "\n", + dev->name, queue_num, features); } } @@ -330,18 +333,18 @@ static void cmd_create_vdpa_port_parsed(void *parsed_result, struct cmdline *cl, __rte_unused void *data) { - int did; + struct rte_vdpa_device *dev; struct cmd_create_result *res = parsed_result; rte_strscpy(vports[devcnt].ifname, res->socket_path, MAX_PATH_LEN); - did = rte_vdpa_find_device_id_by_name(res->bdf); - if (did < 0) { + dev = rte_vdpa_find_device_by_name(res->bdf); + if (dev == NULL) { cmdline_printf(cl, "Unable to find vdpa device id for %s.\n", res->bdf); return; } - vports[devcnt].did = did; + vports[devcnt].dev = dev; if (start_vdpa(&vports[devcnt]) == 0) devcnt++; @@ -403,9 +406,9 @@ int main(int argc, char *argv[]) { char ch; - int did; int ret; struct cmdline *cl; + struct rte_vdpa_device *vdev; struct rte_device *dev; struct rte_dev_iterator dev_iter; @@ -434,12 +437,12 @@ main(int argc, char *argv[]) cmdline_stdin_exit(cl); } else { RTE_DEV_FOREACH(dev, "class=vdpa", &dev_iter) { - did = rte_vdpa_find_device_id_by_name(dev->name); - if (did < 0) { - rte_panic("Failed to find device id for %s\n", + vdev = rte_vdpa_find_device_by_name(dev->name); + if (vdev == NULL) { + rte_panic("Failed to find vDPA dev for %s\n", dev->name); } - vports[devcnt].did = did; + vports[devcnt].dev = vdev; snprintf(vports[devcnt].ifname, MAX_PATH_LEN, "%s%d", iface, devcnt); diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h index e7c785102d..6188bf6483 100644 --- a/lib/librte_vhost/rte_vdpa.h +++ b/lib/librte_vhost/rte_vdpa.h @@ -113,11 +113,26 @@ rte_vdpa_unregister_device(struct rte_vdpa_device *); * @param name * the vdpa device name * @return - * device id on success, -1 on failure + * vDPA device pointer on success, NULL on failure */ __rte_experimental -int -rte_vdpa_find_device_id_by_name(const char *name); +struct rte_vdpa_device * +rte_vdpa_find_device_by_name(const char *name); + +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * Get the generic device from the vdpa device + * + * @param vdpa_dev + * the vdpa device pointer + * @return + * generic device pointer on success, NULL on failure + */ +__rte_experimental +struct rte_device * +rte_vdpa_get_rte_device(struct rte_vdpa_device *vdpa_dev); /** * @warning diff --git a/lib/librte_vhost/rte_vhost_version.map b/lib/librte_vhost/rte_vhost_version.map index 4872bc4f35..43caab7553 100644 --- a/lib/librte_vhost/rte_vhost_version.map +++ b/lib/librte_vhost/rte_vhost_version.map @@ -66,5 +66,6 @@ EXPERIMENTAL { rte_vhost_get_vhost_ring_inflight; rte_vhost_get_vring_base_from_inflight; rte_vhost_slave_config_change; - rte_vdpa_find_device_id_by_name; + rte_vdpa_find_device_by_name; + rte_vdpa_get_rte_device; }; diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c index 5ad96fe8a6..9ec5677a78 100644 --- a/lib/librte_vhost/vdpa.c +++ b/lib/librte_vhost/vdpa.c @@ -40,14 +40,14 @@ rte_vdpa_find_device_id(struct rte_vdpa_device *dev) return -1; } -int -rte_vdpa_find_device_id_by_name(const char *name) +struct rte_vdpa_device * +rte_vdpa_find_device_by_name(const char *name) { struct rte_vdpa_device *dev; int i; if (name == NULL) - return -1; + return NULL; for (i = 0; i < MAX_VHOST_DEVICE; ++i) { dev = &vdpa_devices[i]; @@ -55,10 +55,19 @@ rte_vdpa_find_device_id_by_name(const char *name) continue; if (strcmp(dev->device->name, name) == 0) - return i; + return dev; } - return -1; + return NULL; +} + +struct rte_device * +rte_vdpa_get_rte_device(struct rte_vdpa_device *vdpa_dev) +{ + if (vdpa_dev == NULL) + return NULL; + + return vdpa_dev->device; } struct rte_vdpa_device *