From patchwork Wed Oct 25 14:50:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 1855112 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=BL58INjO; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SFsMM2bKFz23jn for ; Thu, 26 Oct 2023 01:51:43 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qvfEM-0005QZ-9o; Wed, 25 Oct 2023 10:51:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qvfDv-0005AM-01; Wed, 25 Oct 2023 10:51:08 -0400 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qvfDo-000754-95; Wed, 25 Oct 2023 10:51:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=xzkyRUM7nQfBrePX87BOU/AjGHoWHaL/QraAYhiDuVA=; b=BL58INjOUPmq2JMYOeuvydyhAU tPTn/p80t5Eh08H3gRlleRlgP+tgQWGq7N5wXJH7X/mlOScXTpOEWnbOuRpXEPuP6qVNRYaSGOugd 6tcXeJgK3mLtMIaVmwTi4STOuz6ondMNTsb2Dj73DZe37n6idaDQJsRGljufaBfSmbEuV49teBrTx m/FgIqkMEwtqCXoCcT8ymUrb/NGT1pJYZuYZbwQtSluK2yb0iTICekflP2IJA3Gpi9MMvtZg5uGSH wfGZq2vvHZM4qZ/snaUefgRQOvq1JM0TDWen5C41IvSrdS9pyW1ej5/6MqLtxrfa64loaDy8AXSPz 05GH0pzA==; Received: from [2001:8b0:10b:1::ebe] (helo=i7.infradead.org) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1qvfDb-009Nmv-GY; Wed, 25 Oct 2023 14:50:47 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qvfDZ-002dFp-2d; Wed, 25 Oct 2023 15:50:45 +0100 From: David Woodhouse To: qemu-devel@nongnu.org Cc: Kevin Wolf , Hanna Reitz , Stefano Stabellini , Anthony Perard , Paul Durrant , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Paolo Bonzini , "Michael S. Tsirkin" , Marcel Apfelbaum , Richard Henderson , Eduardo Habkost , Jason Wang , Marcelo Tosatti , qemu-block@nongnu.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Bernhard Beschow , Joel Upham Subject: [PATCH v3 27/28] hw/xen: use qemu_create_nic_bus_devices() to instantiate Xen NICs Date: Wed, 25 Oct 2023 15:50:41 +0100 Message-Id: <20231025145042.627381-28-dwmw2@infradead.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231025145042.627381-1-dwmw2@infradead.org> References: <20231025145042.627381-1-dwmw2@infradead.org> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+85b1c44ac99574f3713d+7367+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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 launch emulated Xen guests with '-nic user', and this 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/xen/xen-bus.c | 4 ++++ hw/xen/xen_devconfig.c | 25 ------------------------- hw/xenpv/xen_machine_pv.c | 9 --------- include/hw/xen/xen-legacy-backend.h | 1 - 4 files changed, 4 insertions(+), 35 deletions(-) diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c index cc6f1b362f..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) @@ -1140,4 +1141,7 @@ void xen_bus_init(void) sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); qbus_set_bus_hotplug_handler(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/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);