From patchwork Tue Mar 12 11:36:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1910971 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Ua6c9iqw; 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 4TvBVm5Rhqz1yWn for ; Tue, 12 Mar 2024 22:38:56 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rk0Sl-0000Pi-HJ; Tue, 12 Mar 2024 07:38:32 -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 1rk0RP-0007Gs-0q for qemu-devel@nongnu.org; Tue, 12 Mar 2024 07:37:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rk0RG-0003AW-Ja for qemu-devel@nongnu.org; Tue, 12 Mar 2024 07:37:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1710243416; 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=2eciu0ocTTc7/Cl0LVF9a3KvMaKeeoxMyJwvyK3mSH4=; b=Ua6c9iqwZcrJgdH+H1uiXROYVpwtbTrzCMifcGXo7YO4Qd5DXgHqHnXkgmM072ShGAyeh8 HM0cu9KY6uTJLw2yYJxACkbA09Oc23w3jGS3y9jGvyCHnMt18bKVCqX80Q7pZbIiSYRpU7 7LtFiM2y30XEnbqo5uiJXzYej5HOaNk= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-499-S2NN7970OWWjXfnwnc5heQ-1; Tue, 12 Mar 2024 07:36:52 -0400 X-MC-Unique: S2NN7970OWWjXfnwnc5heQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 46D4A185A783; Tue, 12 Mar 2024 11:36:52 +0000 (UTC) Received: from localhost.localdomain (unknown [10.72.112.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id 209F3492BC6; Tue, 12 Mar 2024 11:36:49 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Cc: Laurent Vivier , Akihiko Odaki , Jason Wang Subject: [PULL 2/8] e1000e: fix link state on resume Date: Tue, 12 Mar 2024 19:36:36 +0800 Message-ID: <20240312113642.36862-3-jasowang@redhat.com> In-Reply-To: <20240312113642.36862-1-jasowang@redhat.com> References: <20240312113642.36862-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.687, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: Laurent Vivier On resume e1000e_vm_state_change() always calls e1000e_autoneg_resume() that sets link_down to false, and thus activates the link even if we have disabled it. The problem can be reproduced starting qemu in paused state (-S) and then set the link to down. When we resume the machine the link appears to be up. Reproducer: # qemu-system-x86_64 ... -device e1000e,netdev=netdev0,id=net0 -S {"execute": "qmp_capabilities" } {"execute": "set_link", "arguments": {"name": "net0", "up": false}} {"execute": "cont" } To fix the problem, merge the content of e1000e_vm_state_change() into e1000e_core_post_load() as e1000 does. Buglink: https://issues.redhat.com/browse/RHEL-21867 Fixes: 6f3fbe4ed06a ("net: Introduce e1000e device emulation") Suggested-by: Akihiko Odaki Signed-off-by: Laurent Vivier Signed-off-by: Jason Wang --- hw/net/e1000e_core.c | 60 ++++++-------------------------------------- hw/net/e1000e_core.h | 2 -- 2 files changed, 7 insertions(+), 55 deletions(-) diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index e324c02dd5..3ae2a184d5 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -123,14 +123,6 @@ e1000e_intmgr_timer_resume(E1000IntrDelayTimer *timer) } } -static void -e1000e_intmgr_timer_pause(E1000IntrDelayTimer *timer) -{ - if (timer->running) { - timer_del(timer->timer); - } -} - static inline void e1000e_intrmgr_stop_timer(E1000IntrDelayTimer *timer) { @@ -398,24 +390,6 @@ e1000e_intrmgr_resume(E1000ECore *core) } } -static void -e1000e_intrmgr_pause(E1000ECore *core) -{ - int i; - - e1000e_intmgr_timer_pause(&core->radv); - e1000e_intmgr_timer_pause(&core->rdtr); - e1000e_intmgr_timer_pause(&core->raid); - e1000e_intmgr_timer_pause(&core->tidv); - e1000e_intmgr_timer_pause(&core->tadv); - - e1000e_intmgr_timer_pause(&core->itr); - - for (i = 0; i < E1000E_MSIX_VEC_NUM; i++) { - e1000e_intmgr_timer_pause(&core->eitr[i]); - } -} - static void e1000e_intrmgr_reset(E1000ECore *core) { @@ -3334,12 +3308,6 @@ e1000e_core_read(E1000ECore *core, hwaddr addr, unsigned size) return 0; } -static inline void -e1000e_autoneg_pause(E1000ECore *core) -{ - timer_del(core->autoneg_timer); -} - static void e1000e_autoneg_resume(E1000ECore *core) { @@ -3351,22 +3319,6 @@ e1000e_autoneg_resume(E1000ECore *core) } } -static void -e1000e_vm_state_change(void *opaque, bool running, RunState state) -{ - E1000ECore *core = opaque; - - if (running) { - trace_e1000e_vm_state_running(); - e1000e_intrmgr_resume(core); - e1000e_autoneg_resume(core); - } else { - trace_e1000e_vm_state_stopped(); - e1000e_autoneg_pause(core); - e1000e_intrmgr_pause(core); - } -} - void e1000e_core_pci_realize(E1000ECore *core, const uint16_t *eeprom_templ, @@ -3379,9 +3331,6 @@ e1000e_core_pci_realize(E1000ECore *core, e1000e_autoneg_timer, core); e1000e_intrmgr_pci_realize(core); - core->vmstate = - qemu_add_vm_change_state_handler(e1000e_vm_state_change, core); - for (i = 0; i < E1000E_NUM_QUEUES; i++) { net_tx_pkt_init(&core->tx[i].tx_pkt, E1000E_MAX_TX_FRAGS); } @@ -3405,8 +3354,6 @@ e1000e_core_pci_uninit(E1000ECore *core) e1000e_intrmgr_pci_unint(core); - qemu_del_vm_change_state_handler(core->vmstate); - for (i = 0; i < E1000E_NUM_QUEUES; i++) { net_tx_pkt_uninit(core->tx[i].tx_pkt); } @@ -3576,5 +3523,12 @@ e1000e_core_post_load(E1000ECore *core) */ nc->link_down = (core->mac[STATUS] & E1000_STATUS_LU) == 0; + /* + * we need to restart intrmgr timers, as an older version of + * QEMU can have stopped them before migration + */ + e1000e_intrmgr_resume(core); + e1000e_autoneg_resume(core); + return 0; } diff --git a/hw/net/e1000e_core.h b/hw/net/e1000e_core.h index 66b025cc43..01510ca78b 100644 --- a/hw/net/e1000e_core.h +++ b/hw/net/e1000e_core.h @@ -98,8 +98,6 @@ struct E1000Core { E1000IntrDelayTimer eitr[E1000E_MSIX_VEC_NUM]; - VMChangeStateEntry *vmstate; - uint32_t itr_guest_value; uint32_t eitr_guest_value[E1000E_MSIX_VEC_NUM];