From patchwork Fri Jan 26 17:24:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 13533062 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3FE5DC47422 for ; Fri, 26 Jan 2024 17:46:22 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.672388.1046422 (Exim 4.92) (envelope-from ) id 1rTQHN-0003yE-Pl; Fri, 26 Jan 2024 17:46:13 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 672388.1046422; Fri, 26 Jan 2024 17:46:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rTQHN-0003y7-LP; Fri, 26 Jan 2024 17:46:13 +0000 Received: by outflank-mailman (input) for mailman id 672388; Fri, 26 Jan 2024 17:46:12 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rTQ5A-0004m7-SI for xen-devel@lists.xenproject.org; Fri, 26 Jan 2024 17:33:36 +0000 Received: from desiato.infradead.org (desiato.infradead.org [2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 0364319f-bc71-11ee-98f5-efadbce2ee36; Fri, 26 Jan 2024 18:33:27 +0100 (CET) Received: from [2001:8b0:10b:1::ebe] (helo=i7.infradead.org) by desiato.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1rTQ4A-000000069Ud-1vK6; Fri, 26 Jan 2024 17:32:35 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rTQ47-00000001elV-1oDM; Fri, 26 Jan 2024 17:32:31 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list X-Inumbo-ID: 0364319f-bc71-11ee-98f5-efadbce2ee36 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=tD5qNwo6WTjFe97d4nPQafto5xogGJwduqrsT8Y/lfs=; b=oXQ9aw59LFOUBm9GLP08iwZ/lD IDXUsvTJ0c8770LyPcdRJmmjCWucq2r4ecMMUsjtGeSpnEzURZmVY/p3QKDyhO0Q6CTN5v6uVQkms tJOdPHdBG32avFzaAaXLXWN8AYL/37U5yFEl72jOxekABWLeePkLtQf04GHf9KgLBOUhqQOb+QPJR sNQieY5AKaIdICMDlCwEIBSMFtHVNV5it0+ibX3MDgqqpJFhGfxSDFht4aqu6UZSDK+d05IPVAjjt uiErvASbFO6+dzBTbvMzgMFQRFUiX/23PuGTOH61o4xzTq1qKSpQbF4Iw9DVzOEDak55udl1H4mI7 97YVBQcw==; From: David Woodhouse To: qemu-devel@nongnu.org Cc: Richard Henderson , Beniamino Galvani , Peter Maydell , Strahinja Jankovic , Niek Linnenbank , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Andrew Jeffery , Joel Stanley , Igor Mitsyanko , Jean-Christophe Dubois , Andrey Smirnov , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Rob Herring , Subbaraya Sundeep , Jan Kiszka , Tyrone Ting , Hao Wu , Radoslaw Biernacki , Leif Lindholm , Marcin Juszkiewicz , "Edgar E. Iglesias" , Alistair Francis , Helge Deller , Paolo Bonzini , Eduardo Habkost , "Michael S. Tsirkin" , Marcel Apfelbaum , Song Gao , Thomas Huth , Laurent Vivier , Huacai Chen , Jiaxun Yang , =?utf-8?q?Herv=C3=A9_Poussineau?= , Aleksandar Rikalo , Aurelien Jarno , Jason Wang , Jia Liu , Stafford Horne , Mark Cave-Ayland , Nicholas Piggin , Daniel Henrique Barboza , David Gibson , Harsh Prateek Bora , Bin Meng , Palmer Dabbelt , Weiwei Li , Liu Zhiwei , Halil Pasic , Christian Borntraeger , Eric Farman , David Hildenbrand , Ilya Leoshkevich , Yoshinori Sato , Magnus Damm , Artyom Tarasenko , Stefano Stabellini , Anthony Perard , Paul Durrant , Max Filippov , qemu-arm@nongnu.org, qemu-ppc@nongnu.org, qemu-riscv@nongnu.org, qemu-s390x@nongnu.org, xen-devel@lists.xenproject.org, David Woodhouse Subject: [PATCH v4 06/47] hw/xen: use qemu_create_nic_bus_devices() to instantiate Xen NICs Date: Fri, 26 Jan 2024 17:24:43 +0000 Message-ID: <20240126173228.394202-7-dwmw2@infradead.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240126173228.394202-1-dwmw2@infradead.org> References: <20240126173228.394202-1-dwmw2@infradead.org> MIME-Version: 1.0 Sender: David Woodhouse X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html From: David Woodhouse When instantiating XenBus itself, for each NIC which is configured with either the model unspecified, or set to to "xen" or "xen-net-device", create a corresponding xen-net-device for it. Now we can revert the previous more hackish version which relied on the platform code explicitly registering the NICs on its own XenBus, having returned the BusState* from xen_bus_init() itself. This also fixes the setup for Xen PV guests, which was previously broken in various ways and never actually managed to peer with the netdev. Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- hw/i386/pc.c | 13 ++----------- hw/i386/pc_piix.c | 2 +- hw/i386/pc_q35.c | 2 +- hw/xen/xen-bus.c | 6 ++++-- hw/xen/xen_devconfig.c | 25 ------------------------- hw/xenpv/xen_machine_pv.c | 9 --------- include/hw/i386/pc.h | 4 +--- include/hw/xen/xen-bus.h | 2 +- include/hw/xen/xen-legacy-backend.h | 1 - 9 files changed, 10 insertions(+), 54 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index ebb0b1c667..196827531a 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1269,7 +1269,7 @@ void pc_basic_device_init(struct PCMachineState *pcms, if (pcms->bus) { pci_create_simple(pcms->bus, -1, "xen-platform"); } - pcms->xenbus = xen_bus_init(); + xen_bus_init(); xen_be_init(); } #endif @@ -1297,8 +1297,7 @@ void pc_basic_device_init(struct PCMachineState *pcms, pcms->vmport != ON_OFF_AUTO_ON); } -void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus, - BusState *xen_bus) +void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus) { MachineClass *mc = MACHINE_CLASS(pcmc); bool default_is_ne2k = g_str_equal(mc->default_nic, TYPE_ISA_NE2000); @@ -1306,14 +1305,6 @@ void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus, rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC); - if (xen_bus) { - while ((nd = qemu_find_nic_info("xen-net-device", true, NULL))) { - DeviceState *dev = qdev_new("xen-net-device"); - qdev_set_nic_properties(dev, nd); - qdev_realize_and_unref(dev, xen_bus, &error_fatal); - } - } - while ((nd = qemu_find_nic_info(TYPE_ISA_NE2000, default_is_ne2k, NULL))) { pc_init_ne2k_isa(isa_bus, nd, &error_fatal); } diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index abfcfe4d2b..70d12bb1b5 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -339,7 +339,7 @@ static void pc_init1(MachineState *machine, pc_basic_device_init(pcms, isa_bus, x86ms->gsi, rtc_state, true, 0x4); - pc_nic_init(pcmc, isa_bus, pci_bus, pcms->xenbus); + pc_nic_init(pcmc, isa_bus, pci_bus); if (pcmc->pci_enabled) { pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state); diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index f43d5142b8..7ca3f465e0 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -340,7 +340,7 @@ static void pc_q35_init(MachineState *machine) /* the rest devices to which pci devfn is automatically assigned */ pc_vga_init(isa_bus, host_bus); - pc_nic_init(pcmc, isa_bus, host_bus, pcms->xenbus); + pc_nic_init(pcmc, isa_bus, host_bus); if (machine->nvdimms_state->is_enabled) { nvdimm_init_acpi_state(machine->nvdimms_state, system_io, diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c index 4973e7d9c9..fb82cc33e4 100644 --- a/hw/xen/xen-bus.c +++ b/hw/xen/xen-bus.c @@ -19,6 +19,7 @@ #include "qapi/error.h" #include "qapi/qmp/qdict.h" #include "sysemu/sysemu.h" +#include "net/net.h" #include "trace.h" static char *xen_device_get_backend_path(XenDevice *xendev) @@ -1133,7 +1134,7 @@ static void xen_register_types(void) type_init(xen_register_types) -BusState *xen_bus_init(void) +void xen_bus_init(void) { DeviceState *dev = qdev_new(TYPE_XEN_BRIDGE); BusState *bus = qbus_new(TYPE_XEN_BUS, dev, NULL); @@ -1141,5 +1142,6 @@ BusState *xen_bus_init(void) sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); qbus_set_bus_hotplug_handler(bus); - return bus; + qemu_create_nic_bus_devices(bus, TYPE_XEN_DEVICE, "xen-net-device", + "xen", "xen-net-device"); } diff --git a/hw/xen/xen_devconfig.c b/hw/xen/xen_devconfig.c index 3f77c675c6..2150869f60 100644 --- a/hw/xen/xen_devconfig.c +++ b/hw/xen/xen_devconfig.c @@ -46,31 +46,6 @@ static int xen_config_dev_all(char *fe, char *be) /* ------------------------------------------------------------- */ -int xen_config_dev_nic(NICInfo *nic) -{ - char fe[256], be[256]; - char mac[20]; - int vlan_id = -1; - - net_hub_id_for_client(nic->netdev, &vlan_id); - snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", - nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2], - nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]); - xen_pv_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", vlan_id, mac); - xen_config_dev_dirs("vif", "qnic", vlan_id, fe, be, sizeof(fe)); - - /* frontend */ - xenstore_write_int(fe, "handle", vlan_id); - xenstore_write_str(fe, "mac", mac); - - /* backend */ - xenstore_write_int(be, "handle", vlan_id); - xenstore_write_str(be, "mac", mac); - - /* common stuff */ - return xen_config_dev_all(fe, be); -} - int xen_config_dev_vfb(int vdev, const char *type) { char fe[256], be[256]; diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c index 9f9f137f99..1130d1a147 100644 --- a/hw/xenpv/xen_machine_pv.c +++ b/hw/xenpv/xen_machine_pv.c @@ -32,8 +32,6 @@ static void xen_init_pv(MachineState *machine) { - int i; - setup_xen_backend_ops(); /* Initialize backend core & drivers */ @@ -62,13 +60,6 @@ static void xen_init_pv(MachineState *machine) vga_interface_created = true; } - /* configure nics */ - for (i = 0; i < nb_nics; i++) { - if (!nd_table[i].model || 0 != strcmp(nd_table[i].model, "xen")) - continue; - xen_config_dev_nic(nd_table + i); - } - xen_bus_init(); /* config cleanup hook */ diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 916af29f7c..ec0e5efcb2 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -33,7 +33,6 @@ typedef struct PCMachineState { /* Pointers to devices and objects: */ PCIBus *bus; - BusState *xenbus; I2CBus *smbus; PFlashCFI01 *flash[2]; ISADevice *pcspk; @@ -185,8 +184,7 @@ void pc_basic_device_init(struct PCMachineState *pcms, void pc_cmos_init(PCMachineState *pcms, BusState *ide0, BusState *ide1, ISADevice *s); -void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus, - BusState *xen_bus); +void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus); void pc_i8259_create(ISABus *isa_bus, qemu_irq *i8259_irqs); diff --git a/include/hw/xen/xen-bus.h b/include/hw/xen/xen-bus.h index 334ddd1ff6..38d40afa37 100644 --- a/include/hw/xen/xen-bus.h +++ b/include/hw/xen/xen-bus.h @@ -75,7 +75,7 @@ struct XenBusClass { OBJECT_DECLARE_TYPE(XenBus, XenBusClass, XEN_BUS) -BusState *xen_bus_init(void); +void xen_bus_init(void); void xen_device_backend_set_state(XenDevice *xendev, enum xenbus_state state); diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h index fc42146bc2..2cca174778 100644 --- a/include/hw/xen/xen-legacy-backend.h +++ b/include/hw/xen/xen-legacy-backend.h @@ -81,7 +81,6 @@ extern struct XenDevOps xen_usb_ops; /* xen-usb.c */ /* configuration (aka xenbus setup) */ void xen_config_cleanup(void); -int xen_config_dev_nic(NICInfo *nic); int xen_config_dev_vfb(int vdev, const char *type); int xen_config_dev_vkbd(int vdev); int xen_config_dev_console(int vdev);