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GET /api/1.0/patches/2197180/?format=api
{ "id": 2197180, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197180/?format=api", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/1.0/projects/47/?format=api", "name": "Open vSwitch", "link_name": "openvswitch", "list_id": "ovs-dev.openvswitch.org", "list_email": "ovs-dev@openvswitch.org", "web_url": "http://openvswitch.org/", "scm_url": "git@github.com:openvswitch/ovs.git", "webscm_url": "https://github.com/openvswitch/ovs" }, "msgid": "<20260217100529.2739141-3-david.marchand@redhat.com>", "date": "2026-02-17T10:05:29", "name": "[ovs-dev,RFC,v2,2/2] dpdk: Disable initial device probe.", "commit_ref": null, "pull_url": null, "state": "rfc", "archived": false, "hash": "83d831784976b8d8209e70ec5343b6f58821e65d", "submitter": { "id": 75396, "url": "http://patchwork.ozlabs.org/api/1.0/people/75396/?format=api", "name": "David Marchand", "email": "david.marchand@redhat.com" }, "delegate": { "id": 75123, "url": "http://patchwork.ozlabs.org/api/1.0/users/75123/?format=api", "username": "echaudron", "first_name": "Eelco", "last_name": "Chaudron", "email": "echaudro@redhat.com" }, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260217100529.2739141-3-david.marchand@redhat.com/mbox/", "series": [ { "id": 492405, "url": "http://patchwork.ozlabs.org/api/1.0/series/492405/?format=api", "date": "2026-02-17T10:05:27", "name": "Disable initial device probe in DPDK.", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/492405/mbox/" } ], "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2197180/checks/", "tags": {}, "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ovs-dev@lists.linuxfoundation.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=HbIqPhvy;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=140.211.166.133; 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Tue, 17 Feb 2026 10:05:59 +0000 (UTC)", "from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com\n (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by\n relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n cipher=TLS_AES_256_GCM_SHA384) id us-mta-271-D1nvg7E_OraG4NlbT2Oweg-1; Tue,\n 17 Feb 2026 05:05:55 -0500", "from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com\n (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS\n id BDAAA195606D; Tue, 17 Feb 2026 10:05:54 +0000 (UTC)", "from dmarchan.lan (unknown [10.45.225.11])\n by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP\n id D74C530001B9; Tue, 17 Feb 2026 10:05:52 +0000 (UTC)" ], "X-Virus-Scanned": [ "amavis at osuosl.org", "amavis at osuosl.org" ], "X-Comment": "SPF check N/A for local connections - client-ip=140.211.9.56;\n helo=lists.linuxfoundation.org;\n envelope-from=ovs-dev-bounces@openvswitch.org; receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp2.osuosl.org 9BF2C40EF7", "OpenDKIM Filter v2.11.0 smtp2.osuosl.org 2E34840EB8" ], "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=170.10.129.124;\n helo=us-smtp-delivery-124.mimecast.com;\n envelope-from=david.marchand@redhat.com; receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp2.osuosl.org 2E34840EB8", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1771322759;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=H3n0BEnI0M5ym1eLABFIviQQ7VWrRQQV+ejD5EobZm4=;\n b=HbIqPhvyTB23VsYVAzk/71P+X6osLi3RiBVmMoN6WnGe/TO12muMbF/+EeVB6wBk/7h7zZ\n ae/HKACj1VbC6ksBPOycywQuD0lhmugtvbGkZlfwVI2cGtZOUwiixO1Pm9rnXT2Zdqp9OP\n 7H8qbfS4VSvPqXuOauX0nj6ek+gPh5s=", "X-MC-Unique": "D1nvg7E_OraG4NlbT2Oweg-1", "X-Mimecast-MFC-AGG-ID": "D1nvg7E_OraG4NlbT2Oweg_1771322754", "To": "dev@openvswitch.org", "Date": "Tue, 17 Feb 2026 11:05:29 +0100", "Message-ID": "<20260217100529.2739141-3-david.marchand@redhat.com>", "In-Reply-To": "<20260217100529.2739141-1-david.marchand@redhat.com>", "References": "<20260217100529.2739141-1-david.marchand@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.4", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "Mvxe1b6epSOTSdjoJ_JT4c6ABUbZJHPrk6lIPwiy_3M_1771322754", "X-Mimecast-Originator": "redhat.com", "Subject": "[ovs-dev] [RFC v2 2/2] dpdk: Disable initial device probe.", "X-BeenThere": "ovs-dev@openvswitch.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "<ovs-dev.openvswitch.org>", "List-Unsubscribe": "<https://mail.openvswitch.org/mailman/options/ovs-dev>,\n <mailto:ovs-dev-request@openvswitch.org?subject=unsubscribe>", "List-Archive": "<http://mail.openvswitch.org/pipermail/ovs-dev/>", "List-Post": "<mailto:ovs-dev@openvswitch.org>", "List-Help": "<mailto:ovs-dev-request@openvswitch.org?subject=help>", "List-Subscribe": "<https://mail.openvswitch.org/mailman/listinfo/ovs-dev>,\n <mailto:ovs-dev-request@openvswitch.org?subject=subscribe>", "From": "David Marchand via dev <ovs-dev@openvswitch.org>", "Reply-To": "David Marchand <david.marchand@redhat.com>", "Cc": "elibr@nvidia.com", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ovs-dev-bounces@openvswitch.org", "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>" }, "content": "By default, DPDK probes all available resources (like PCI devices) and\npartially initialises them (/ takes over them).\nThis behavior has been relied on by OVS, since netdev-dpdk introduction.\nIt is not needed since DPDK device hotplug has been supported and used\nfor some time now.\n\nBesides, this initial probing may not be desirable:\n- for PCI devices bound to vfio-pci, the first application taking over\n them \"wins\", meaning that OVS would prevent qemu from using some VF\n devices,\n- for mlx5 devices,\n - the driver maintains link status and liveness of all ports\n (taking some kernel lock) even when OVS only uses a subset of them,\n - if some driver feature needs to be enabled for one port via a devargs,\n this would have to be set in dpdk-extra,\n\nChange this behavior and disable the initial PCI probing by passing\na specially crafted allow list: this implementation is not elegant\nbut it has been successfully used (for the PCI part) in a number of\nsetups I know, and there is no better DPDK API to achieve the same\nat the moment.\n\nThis behavior change breaks setups that were using the\nclass=eth,mac=XX:XX:XX:XX:XX:XX syntax because OVS was relying on the\n(fragile) assumption that all DPDK ports were probed at init once and\nfor all.\nAdd a warning for users of this syntax, update the documentation and\nadd an option to restore the original behavior via\n'dpdk-probe-at-init=true'.\n\nThis option also helps for unexpected cases like https://xkcd.com/1172/.\n\nSigned-off-by: David Marchand <david.marchand@redhat.com>\n---\nChanges since RFC v1:\n- updated commitlog (mentionning devargs),\n- handled other DPDK buses,\n\n---\n Documentation/howto/dpdk.rst | 6 +++++\n Documentation/intro/install/dpdk.rst | 8 ++++++\n NEWS | 5 ++++\n lib/dpdk.c | 28 +++++++++++++++++++\n lib/netdev-dpdk.c | 2 +-\n tests/system-dpdk-macros.at | 2 +-\n tests/system-dpdk.at | 40 ++++++++++++++--------------\n vswitchd/vswitch.xml | 15 +++++++++++\n 8 files changed, 84 insertions(+), 22 deletions(-)", "diff": "diff --git a/Documentation/howto/dpdk.rst b/Documentation/howto/dpdk.rst\nindex 73e630b07f..ce31dd1055 100644\n--- a/Documentation/howto/dpdk.rst\n+++ b/Documentation/howto/dpdk.rst\n@@ -62,6 +62,12 @@ is suggested::\n \n .. important::\n \n+ Using this syntax requires that DPDK probes the device owning those\n+ multiple ports. This can be achieved by either setting an allowed list\n+ of PCI devices in the ``dpdk-extra`` configuration, or by asking for\n+ probing all devices available (PCI devices included) at initialisation\n+ (setting ``dpdk-probe-at-init`` to true).\n+\n Hotplugging physical interfaces is not supported using the above syntax.\n This is expected to change with the release of DPDK v18.05. For information\n on hotplugging physical interfaces, you should instead refer to\ndiff --git a/Documentation/intro/install/dpdk.rst b/Documentation/intro/install/dpdk.rst\nindex 6f4687bdea..a2ecdf36de 100644\n--- a/Documentation/intro/install/dpdk.rst\n+++ b/Documentation/intro/install/dpdk.rst\n@@ -297,6 +297,14 @@ listed below. Defaults will be provided for all values not explicitly set.\n sockets. If not specified, this option will not be set by default. DPDK\n default will be used instead.\n \n+``dpdk-probe-at-init``\n+ Let DPDK EAL probe all available devices at initialisation.\n+ This consumes more resources as OVS may not use all probed devices and this\n+ may have undesired side effects (like taking the RTNL lock frequently for\n+ maintaining link status (and other states etc..) of mlx5 netdevs that OVS\n+ does not care about. However, this option is needed when using the\n+ ``class=eth,mac=XX:XX:XX:XX:XX:XX`` syntax for DPDK ports.\n+\n ``dpdk-hugepage-dir``\n Directory where hugetlbfs is mounted\n \ndiff --git a/NEWS b/NEWS\nindex d5642f9857..bf7fe12dc3 100644\n--- a/NEWS\n+++ b/NEWS\n@@ -1,5 +1,10 @@\n Post-v3.7.0\n --------------------\n+ - DPDK:\n+ * Probing of devices at DPDK init has been disabled to avoid wasting\n+ resources on unused devices. This breaks DPDK netdev ports using\n+ \"class=eth,mac=\" syntax (though it can be restored, see\n+ Documentation/howto/dpdk.rst).\n \n \n v3.7.0 - 16 Feb 2026\ndiff --git a/lib/dpdk.c b/lib/dpdk.c\nindex d27b95cd9a..794ffbe599 100644\n--- a/lib/dpdk.c\n+++ b/lib/dpdk.c\n@@ -430,6 +430,34 @@ dpdk_init__(const struct smap *ovs_other_config)\n svec_add_nocopy(&args, xasprintf(\"0@%d\", cpu));\n }\n \n+ if (!args_contains(&args, \"-a\") && !args_contains(&args, \"-b\")\n+ && !smap_get_bool(ovs_other_config, \"dpdk-probe-at-init\", false)) {\n+#ifdef RTE_BUS_AUXILIARY\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"auxiliary:\");\n+#endif\n+#ifdef RTE_BUS_CDX\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"cdx:cdx-\");\n+#endif\n+#ifdef RTE_BUS_FSLMC\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"fslmc:dpni.65535\");\n+#endif\n+#ifdef RTE_BUS_PCI\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"pci:0000:00:00.0\");\n+#endif\n+#ifdef RTE_BUS_UACCE\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"uacce:\");\n+#endif\n+#ifdef RTE_BUS_VMBUS\n+ svec_add(&args, \"-a\");\n+ svec_add(&args, \"vmbus:00000000-0000-0000-0000-000000000000\");\n+#endif\n+ }\n+\n svec_terminate(&args);\n \n optind = 1;\ndiff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c\nindex c51fe7c258..8115223277 100644\n--- a/lib/netdev-dpdk.c\n+++ b/lib/netdev-dpdk.c\n@@ -2050,7 +2050,7 @@ netdev_dpdk_get_port_by_mac(const char *mac_str, char **extra_err)\n }\n }\n \n- *extra_err = xstrdup(\"unknown mac\");\n+ *extra_err = xstrdup(\"unknown mac (use dpdk-probe-at-init=true?)\");\n return DPDK_ETH_PORT_ID_INVALID;\n }\n \ndiff --git a/tests/system-dpdk-macros.at b/tests/system-dpdk-macros.at\nindex f8ba766739..716d8a357d 100644\n--- a/tests/system-dpdk-macros.at\n+++ b/tests/system-dpdk-macros.at\n@@ -139,7 +139,7 @@ m4_define([OVS_TRAFFIC_VSWITCHD_START],\n OVS_DPDK_PRE_CHECK()\n OVS_WAIT_WHILE([ip link show ovs-netdev])\n dnl For functional tests, no need for DPDK PCI probing.\n- OVS_DPDK_START([--no-pci], [--disable-system], [$3])\n+ OVS_DPDK_START([], [--disable-system], [$3])\n dnl Add bridges, ports, etc.\n OVS_WAIT_WHILE([ip link show br0])\n AT_CHECK([ovs-vsctl -- _ADD_BR([br0]) -- $1 m4_if([$2], [], [], [| uuidfilt])], [0], [$2])\ndiff --git a/tests/system-dpdk.at b/tests/system-dpdk.at\nindex 17d3d25955..bd1bead661 100644\n--- a/tests/system-dpdk.at\n+++ b/tests/system-dpdk.at\n@@ -43,7 +43,7 @@ dnl Check if EAL init is successful\n AT_SETUP([OVS-DPDK - EAL init])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n AT_CHECK([grep \"DPDK Enabled - initializing...\" ovs-vswitchd.log], [], [stdout])\n AT_CHECK([grep \"EAL\" ovs-vswitchd.log], [], [stdout])\n AT_CHECK([grep \"DPDK Enabled - initialized\" ovs-vswitchd.log], [], [stdout])\n@@ -59,7 +59,7 @@ AT_SETUP([OVS-DPDK - dpdk-lcore-mask conversion - single])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_START_OVSDB()\n-OVS_DPDK_START_VSWITCHD([--no-pci])\n+OVS_DPDK_START_VSWITCHD()\n CHECK_CPU_DISCOVERED()\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=0x1])\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true])\n@@ -77,7 +77,7 @@ AT_SETUP([OVS-DPDK - dpdk-lcore-mask conversion - multi])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_START_OVSDB()\n-OVS_DPDK_START_VSWITCHD([--no-pci])\n+OVS_DPDK_START_VSWITCHD()\n CHECK_CPU_DISCOVERED(4)\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=0xf])\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true])\n@@ -95,7 +95,7 @@ AT_SETUP([OVS-DPDK - dpdk-lcore-mask conversion - non-contig])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_START_OVSDB()\n-OVS_DPDK_START_VSWITCHD([--no-pci])\n+OVS_DPDK_START_VSWITCHD()\n CHECK_CPU_DISCOVERED(8)\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=0xca])\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true])\n@@ -113,7 +113,7 @@ AT_SETUP([OVS-DPDK - dpdk-lcore-mask conversion - zeromask])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_START_OVSDB()\n-OVS_DPDK_START_VSWITCHD([--no-pci])\n+OVS_DPDK_START_VSWITCHD()\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=0x0])\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true])\n OVS_WAIT_UNTIL([grep \"Ignoring database defined option 'dpdk-lcore-mask' due to invalid value '0x0'\" ovs-vswitchd.log])\n@@ -152,7 +152,7 @@ dnl Add vhost-user-client port\n AT_SETUP([OVS-DPDK - add vhost-user-client port])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -181,7 +181,7 @@ AT_SETUP([OVS-DPDK - ping vhost-user ports])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_CHECK_TESTPMD()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -237,7 +237,7 @@ AT_SETUP([OVS-DPDK - ping vhost-user-client ports])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_CHECK_TESTPMD()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -350,7 +350,7 @@ AT_SETUP([OVS-DPDK - Ingress policing create delete vport port])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add ingress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -387,7 +387,7 @@ AT_SETUP([OVS-DPDK - Ingress policing no policing rate])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add ingress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -421,7 +421,7 @@ AT_SETUP([OVS-DPDK - Ingress policing no policing burst])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add ingress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -487,7 +487,7 @@ AT_SETUP([OVS-DPDK - QoS create delete vport port])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add egress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -522,7 +522,7 @@ AT_SETUP([OVS-DPDK - QoS no cir])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add egress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -551,7 +551,7 @@ AT_SETUP([OVS-DPDK - QoS no cbs])\n AT_KEYWORDS([dpdk])\n \n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and add egress policer\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -657,7 +657,7 @@ AT_KEYWORDS([dpdk])\n \n OVS_DPDK_CHECK_TESTPMD()\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS with default MTU value\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -698,7 +698,7 @@ AT_KEYWORDS([dpdk])\n \n OVS_DPDK_CHECK_TESTPMD()\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and modify MTU value\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -816,7 +816,7 @@ AT_KEYWORDS([dpdk])\n \n OVS_DPDK_CHECK_TESTPMD()\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and set MTU value to max upper bound\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -858,7 +858,7 @@ AT_KEYWORDS([dpdk])\n \n OVS_DPDK_CHECK_TESTPMD()\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n \n dnl Add userspace bridge and attach it to OVS and set MTU value to min lower bound\n AT_CHECK([ovs-vsctl add-br br10 -- set bridge br10 datapath_type=netdev])\n@@ -897,7 +897,7 @@ AT_SETUP([OVS-DPDK - user configured mempool])\n AT_KEYWORDS([dpdk])\n OVS_DPDK_PRE_CHECK()\n OVS_DPDK_START_OVSDB()\n-OVS_DPDK_START_VSWITCHD([--no-pci])\n+OVS_DPDK_START_VSWITCHD()\n \n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:shared-mempool-config=8000,6000,1500])\n AT_CHECK([ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true])\n@@ -946,7 +946,7 @@ dnl --------------------------------------------------------------------------\n AT_SETUP([OVS-DPDK - ovs-appctl dpif/offload/show])\n AT_KEYWORDS([dpdk dpif-offload])\n OVS_DPDK_PRE_CHECK()\n-OVS_DPDK_START([--no-pci])\n+OVS_DPDK_START()\n AT_CHECK([ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev])\n AT_CHECK([ovs-vsctl add-port br0 p1 \\\n -- set Interface p1 type=dpdk options:dpdk-devargs=net_null0,no-rx=1],\ndiff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml\nindex b7a5afc0a5..2bd101bf2e 100644\n--- a/vswitchd/vswitch.xml\n+++ b/vswitchd/vswitch.xml\n@@ -453,6 +453,21 @@\n </p>\n </column>\n \n+ <column name=\"other_config\" key=\"dpdk-probe-at-init\"\n+ type='{\"type\": \"boolean\"}'>\n+ <p>\n+ Specifies whether DPDK should probe all devices available at the\n+ time DPDK is initialised. This is required when declaring DPDK ports\n+ using the \"class=eth,mac=XX:XX:XX:XX:XX:XX\" syntax but beware that\n+ it implies more resources consumption and undesired side effects\n+ with some devices (like mlx5).\n+ </p>\n+ <p>\n+ If not specified, DPDK will probe no device at initialisation,\n+ which should be fine in most cases.\n+ </p>\n+ </column>\n+\n <column name=\"other_config\" key=\"dpdk-extra\"\n type='{\"type\": \"string\"}'>\n <p>\n", "prefixes": [ "ovs-dev", "RFC", "v2", "2/2" ] }