From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3472C433ED for ; Mon, 3 May 2021 15:07:23 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 03631611CE for ; Mon, 3 May 2021 15:07:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03631611CE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46168 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ldaAL-00018g-W0 for qemu-devel@archiver.kernel.org; Mon, 03 May 2021 11:07:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42102) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lda8z-0008A5-6C for qemu-devel@nongnu.org; Mon, 03 May 2021 11:05:57 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:45358) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lda8v-0002F6-BM for qemu-devel@nongnu.org; Mon, 03 May 2021 11:05:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620054350; 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=AjYvMuEmSu3PtD1viTCx39ia6hX1sNDX3hKH0lr8Cww=; b=azPanIz/vqrulb8E6iIhBpdIh8nfdtHorH6x+hEEhTj/dX/ZgaREADNb5PKFzZRDVfhWc3 u/KmptH2MYyWieVf53oqot499moodXuC6//RXejXd4zh5mlytNNgOm6yMeN1i5Wb8XVYp4 YDkL5kIeMI8UjpYAmcfk2jSk7RC5oU8= 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-327-mbNft43rNAiUYdrljvs31A-1; Mon, 03 May 2021 11:05:47 -0400 X-MC-Unique: mbNft43rNAiUYdrljvs31A-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C74631966323; Mon, 3 May 2021 15:05:45 +0000 (UTC) Received: from localhost (unknown [10.40.208.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id 412D319C45; Mon, 3 May 2021 15:05:41 +0000 (UTC) Date: Mon, 3 May 2021 17:05:39 +0200 From: Igor Mammedov To: Vincent Bernat Subject: Re: [PATCH v4] hw/smbios: support for type 41 (onboard devices extended information) Message-ID: <20210503170539.5e813f89@redhat.com> In-Reply-To: <20210401171138.62970-1-vincent@bernat.ch> References: <20210401171138.62970-1-vincent@bernat.ch> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Daniel P . =?UTF-8?B?QmVycmFuZ8Op?=" , qemu-devel@nongnu.org, "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 1 Apr 2021 19:11:38 +0200 Vincent Bernat wrote: > Type 41 defines the attributes of devices that are onboard. The > original intent was to imply the BIOS had some level of control over > the enablement of the associated devices. > > If network devices are present in this table, by default, udev will > name the corresponding interfaces enoX, X being the instance number. > Without such information, udev will fallback to using the PCI ID and > this usually gives ens3 or ens4. This can be a bit annoying as the > name of the network card may depend on the order of options and may > change if a new PCI device is added earlier on the commande line. > Being able to provide SMBIOS type 41 entry ensure the name of the > interface won't change and helps the user guess the right name without > booting a first time. > > This can be invoked with: > > $QEMU -netdev user,id=internet > -device virtio-net-pci,mac=50:54:00:00:00:42,netdev=internet,id=internet-dev \ > -smbios type=41,designation='Onboard LAN',instance=1,kind=ethernet,pcidev=internet-dev > > The PCI segment is assumed to be 0. This should hold true for most > cases. > > $ dmidecode -t 41 > # dmidecode 3.3 > Getting SMBIOS data from sysfs. > SMBIOS 2.8 present. > > Handle 0x2900, DMI type 41, 11 bytes > Onboard Device > Reference Designation: Onboard LAN > Type: Ethernet > Status: Enabled > Type Instance: 1 > Bus Address: 0000:00:09.0 > > $ ip -brief a > lo UNKNOWN 127.0.0.1/8 ::1/128 > eno1 UP 10.0.2.14/24 fec0::5254:ff:fe00:42/64 fe80::5254:ff:fe00:42/64 > > Signed-off-by: Vincent Bernat > --- > hw/arm/virt.c | 7 +- > hw/i386/fw_cfg.c | 4 +- > hw/smbios/smbios.c | 124 ++++++++++++++++++++++++++++++++++- > include/hw/firmware/smbios.h | 14 +++- > qemu-options.hx | 30 ++++++++- > 5 files changed, 173 insertions(+), 6 deletions(-) > > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > index aa2bbd14e090..840ec0af02db 100644 > --- a/hw/arm/virt.c > +++ b/hw/arm/virt.c > @@ -53,6 +53,7 @@ > #include "sysemu/kvm.h" > #include "hw/loader.h" > #include "exec/address-spaces.h" > +#include "qapi/error.h" > #include "qemu/bitops.h" > #include "qemu/error-report.h" > #include "qemu/module.h" > @@ -1524,8 +1525,10 @@ static void virt_build_smbios(VirtMachineState *vms) > vmc->smbios_old_sys_ver ? "1.0" : mc->name, false, > true, SMBIOS_ENTRY_POINT_30); > > - smbios_get_tables(MACHINE(vms), NULL, 0, &smbios_tables, &smbios_tables_len, > - &smbios_anchor, &smbios_anchor_len); > + smbios_get_tables(MACHINE(vms), NULL, 0, > + &smbios_tables, &smbios_tables_len, > + &smbios_anchor, &smbios_anchor_len, > + &error_fatal); > > if (smbios_anchor) { > fw_cfg_add_file(vms->fw_cfg, "etc/smbios/smbios-tables", > diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c > index e48a54fa364b..4e68d5dea438 100644 > --- a/hw/i386/fw_cfg.c > +++ b/hw/i386/fw_cfg.c > @@ -22,6 +22,7 @@ > #include "hw/nvram/fw_cfg.h" > #include "e820_memory_layout.h" > #include "kvm/kvm_i386.h" > +#include "qapi/error.h" > #include CONFIG_DEVICES > > struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX}; > @@ -78,7 +79,8 @@ void fw_cfg_build_smbios(MachineState *ms, FWCfgState *fw_cfg) > } > smbios_get_tables(ms, mem_array, array_count, > &smbios_tables, &smbios_tables_len, > - &smbios_anchor, &smbios_anchor_len); > + &smbios_anchor, &smbios_anchor_len, > + &error_fatal); > g_free(mem_array); > > if (smbios_anchor) { > diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c > index f22c4f5b734e..7397e567373b 100644 > --- a/hw/smbios/smbios.c > +++ b/hw/smbios/smbios.c > @@ -27,6 +27,7 @@ > #include "hw/firmware/smbios.h" > #include "hw/loader.h" > #include "hw/boards.h" > +#include "hw/pci/pci_bus.h" > #include "smbios_build.h" > > /* legacy structures and constants for <= 2.0 machines */ > @@ -118,6 +119,28 @@ static struct { > uint16_t speed; > } type17; > > +static QEnumLookup type41_kind_lookup = { > + .array = (const char *const[]) { > + "other", > + "unknown", > + "video", > + "scsi", > + "ethernet", > + "tokenring", > + "sound", > + "pata", > + "sata", > + "sas", > + }, > + .size = 10 > +}; > +struct type41_instance { > + const char *designation, *pcidev; > + uint8_t instance, kind; > + QTAILQ_ENTRY(type41_instance) next; > +}; > +static QTAILQ_HEAD(, type41_instance) type41 = QTAILQ_HEAD_INITIALIZER(type41); > + > static QemuOptsList qemu_smbios_opts = { > .name = "smbios", > .head = QTAILQ_HEAD_INITIALIZER(qemu_smbios_opts.head), > @@ -358,6 +381,32 @@ static const QemuOptDesc qemu_smbios_type17_opts[] = { > { /* end of list */ } > }; > > +static const QemuOptDesc qemu_smbios_type41_opts[] = { > + { > + .name = "type", > + .type = QEMU_OPT_NUMBER, > + .help = "SMBIOS element type", > + },{ > + .name = "designation", > + .type = QEMU_OPT_STRING, > + .help = "reference designation string", > + },{ > + .name = "kind", > + .type = QEMU_OPT_STRING, > + .help = "device type", > + .def_value_str = "other", > + },{ > + .name = "instance", > + .type = QEMU_OPT_NUMBER, > + .help = "device type instance", > + },{ > + .name = "pcidev", > + .type = QEMU_OPT_STRING, > + .help = "PCI device", > + }, > + { /* end of list */ } > +}; > + > static void smbios_register_config(void) > { > qemu_add_opts(&qemu_smbios_opts); > @@ -773,6 +822,53 @@ static void smbios_build_type_32_table(void) > SMBIOS_BUILD_TABLE_POST; > } > > +static void smbios_build_type_41_table(Error **errp) > +{ > + unsigned instance = 0; > + struct type41_instance *t41; > + > + QTAILQ_FOREACH(t41, &type41, next) { > + SMBIOS_BUILD_TABLE_PRE(41, 0x2900 + instance, true); > + > + SMBIOS_TABLE_SET_STR(41, reference_designation_str, t41->designation); > + t->device_type = t41->kind; > + t->device_type_instance = t41->instance; > + t->segment_group_number = cpu_to_le16(0); > + t->bus_number = 0; > + t->device_number = 0; > + > + if (t41->pcidev) { > + PCIDevice *pdev = NULL; > + int rc = pci_qdev_find_device(t41->pcidev, &pdev); > + if (rc != 0) { > + error_setg(errp, > + "No PCI device %s for SMBIOS type 41 entry %s", > + t41->pcidev, t41->designation); > + return; > + } > + /* > + * We only handle the case were the device is attached to > + * the PCI root bus. The general case is more complex as > + * bridges are enumerated later and the table would need > + * to be updated at this moment. > + */ > + if (!pci_bus_is_root(pci_get_bus(pdev))) { > + error_setg(errp, > + "Cannot create type 41 entry for PCI device %s: " > + "not attached to the root bus", > + t41->pcidev); > + return; > + } Is this limitation really necessary? As far as I see caller of this smbios_get_tables(), is called at machine_done time when all devices (including bridges) present on CLI are created. > + t->segment_group_number = cpu_to_le16(0); > + t->bus_number = pci_dev_bus_num(pdev); > + t->device_number = pdev->devfn; > + } > + > + SMBIOS_BUILD_TABLE_POST; > + instance++; > + } > +} > + > static void smbios_build_type_127_table(void) > { > SMBIOS_BUILD_TABLE_PRE(127, 0x7F00, true); /* required */ > @@ -883,7 +979,8 @@ void smbios_get_tables(MachineState *ms, > const struct smbios_phys_mem_area *mem_array, > const unsigned int mem_array_size, > uint8_t **tables, size_t *tables_len, > - uint8_t **anchor, size_t *anchor_len) > + uint8_t **anchor, size_t *anchor_len, > + Error **errp) > { > unsigned i, dimm_cnt; > > @@ -928,6 +1025,7 @@ void smbios_get_tables(MachineState *ms, > > smbios_build_type_32_table(); > smbios_build_type_38_table(); > + smbios_build_type_41_table(errp); > smbios_build_type_127_table(); > > smbios_validate_table(ms); > @@ -1224,6 +1322,30 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) > save_opt(&type17.part, opts, "part"); > type17.speed = qemu_opt_get_number(opts, "speed", 0); > return; > + case 41: { > + struct type41_instance *t; > + Error *local_err = NULL; > + > + if (!qemu_opts_validate(opts, qemu_smbios_type41_opts, errp)) { > + return; > + } > + t = g_new0(struct type41_instance, 1); > + save_opt(&t->designation, opts, "designation"); > + t->kind = qapi_enum_parse(&type41_kind_lookup, > + qemu_opt_get(opts, "kind"), > + 0, &local_err) + 1; > + t->kind |= 0x80; /* enabled */ > + if (local_err != NULL) { > + error_propagate(errp, local_err); > + g_free(t); > + return; > + } > + t->instance = qemu_opt_get_number(opts, "instance", 1); > + save_opt(&t->pcidev, opts, "pcidev"); > + > + QTAILQ_INSERT_TAIL(&type41, t, next); > + return; > + } > default: > error_setg(errp, > "Don't know how to build fields for SMBIOS type %ld", > diff --git a/include/hw/firmware/smbios.h b/include/hw/firmware/smbios.h > index 02a0ced0a09f..5a0dd0c8cfff 100644 > --- a/include/hw/firmware/smbios.h > +++ b/include/hw/firmware/smbios.h > @@ -258,6 +258,17 @@ struct smbios_type_32 { > uint8_t boot_status; > } QEMU_PACKED; > > +/* SMBIOS type 41 - Onboard Devices Extended Information */ > +struct smbios_type_41 { > + struct smbios_structure_header header; > + uint8_t reference_designation_str; > + uint8_t device_type; > + uint8_t device_type_instance; > + uint16_t segment_group_number; > + uint8_t bus_number; > + uint8_t device_number; > +} QEMU_PACKED; > + > /* SMBIOS type 127 -- End-of-table */ > struct smbios_type_127 { > struct smbios_structure_header header; > @@ -273,5 +284,6 @@ void smbios_get_tables(MachineState *ms, > const struct smbios_phys_mem_area *mem_array, > const unsigned int mem_array_size, > uint8_t **tables, size_t *tables_len, > - uint8_t **anchor, size_t *anchor_len); > + uint8_t **anchor, size_t *anchor_len, > + Error **errp); > #endif /* QEMU_SMBIOS_H */ > diff --git a/qemu-options.hx b/qemu-options.hx > index fd21002bd61d..f71f716aa09c 100644 > --- a/qemu-options.hx > +++ b/qemu-options.hx > @@ -2370,7 +2370,9 @@ DEF("smbios", HAS_ARG, QEMU_OPTION_smbios, > " specify SMBIOS type 11 fields\n" > "-smbios type=17[,loc_pfx=str][,bank=str][,manufacturer=str][,serial=str]\n" > " [,asset=str][,part=str][,speed=%d]\n" > - " specify SMBIOS type 17 fields\n", > + " specify SMBIOS type 17 fields\n" > + "-smbios type=41[,designation=str][,kind=str][,instance=%d][,pcidev=str]\n" > + " specify SMBIOS type 41 fields\n", > QEMU_ARCH_I386 | QEMU_ARCH_ARM) > SRST > ``-smbios file=binary`` > @@ -2432,6 +2434,32 @@ SRST > > ``-smbios type=17[,loc_pfx=str][,bank=str][,manufacturer=str][,serial=str][,asset=str][,part=str][,speed=%d]`` > Specify SMBIOS type 17 fields > + > +``-smbios type=41[,designation=str][,kind=str][,instance=%d][,pcidev=str]`` > + Specify SMBIOS type 41 fields > + > + This argument can be repeated multiple times. Its main use is to allow network interfaces be created > + as ``enoX`` on Linux, with X being the instance number, instead of the name depending on the interface > + position on the PCI bus. > + > + Here is an example of use: > + > + .. parsed-literal:: > + > + -netdev user,id=internet \\ > + -device virtio-net-pci,mac=50:54:00:00:00:42,netdev=internet,id=internet-dev \\ > + -smbios type=41,designation='Onboard LAN',instance=1,kind=ethernet,pcidev=internet-dev > + > + In the guest OS, the device should then appear as ``eno1``: > + > + ..parsed-literal:: > + > + $ ip -brief l > + lo UNKNOWN 00:00:00:00:00:00 > + eno1 UP 50:54:00:00:00:42 > + > + Currently, the PCI device has to be attached to the root bus. > + > ERST > > DEFHEADING()