From patchwork Tue Jan 23 11:25:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13527278 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.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 smtp.lore.kernel.org (Postfix) with ESMTPS id BE4D9C47258 for ; Tue, 23 Jan 2024 11:30:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSEzD-0006Wc-Ue; Tue, 23 Jan 2024 06:30:35 -0500 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 1rSEz5-0006VJ-5p for qemu-devel@nongnu.org; Tue, 23 Jan 2024 06:30:28 -0500 Received: from mout.kundenserver.de ([212.227.126.134]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rSEz0-0007md-SS for qemu-devel@nongnu.org; Tue, 23 Jan 2024 06:30:26 -0500 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MAchM-1rHDLr45we-00B5Ae; Tue, 23 Jan 2024 12:25:04 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Akihiko Odaki , Sriram Yagnaraman , Jason Wang , Dmitry Fleytman , Laurent Vivier Subject: [PATCH 1/2] igb: fix link state on resume Date: Tue, 23 Jan 2024 12:25:00 +0100 Message-ID: <20240123112501.305681-1-lvivier@redhat.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-Provags-ID: V03:K1:3Kr0xbtmiUTjr4+OGuTOfK/qwBY5xe8KQVE30+hM1b/zukFemU/ Pz+yP4e1ORhrjb2Lf3vkvlwWpZgLsmJN/fJrfwSKy9XJV5aLkdq77J6WNC+47ivLkz4KRS4 R0FvGBUJGGJJIRyqAKd/K9P/cEPB5sdB6O+ugq2aIEvF35eTE42PbCdj3ZlurEceSYKS9Uz A9b3dQLlGFyeyZt0e5sKw== UI-OutboundReport: notjunk:1;M01:P0:0A74SfUlOUg=;DYF7sPK3rBENRQnCwbkNJILGoxi eQEXBznY9ZcCayVNaT7hZQEMSo0lB33UOte2LRpZttZW0aDj4tkUwsTqBdYSIVhmoZjCHt9P/ TAFatbLELFgADvQrz9JWeUqRpsq4ULjM0VWSkkTbt0e9+Z6wfU9gNOqAS2nE/R7nruymU0qlm WhGd3n8k0tK7jmjVwU435KBR6rnzUSV2WLUsNXwPDmHjdcTm/EuoKFthc+GL21C0bv0AoJDN+ l3BVxkXb+lPiKH3ZK+du4cYnR2V4Y8UTLBPw+EtJj28vnOz0LNgSQtvcabndWpPH49hsl0oPT dzgjd4fdKNr2Kp9xg2CFNiZ1ToWefqMbV3yTNTDhXuf+w6PgIxjY0RvARm7ndEnNr9u08qW3N vaQKjfWW5Twvnvze6HgilziulaDzmA18NMsTfl+lvwtlwF2Z/bIYK6TvEmNRRO6j53LmYuIPq kZ7HTN06kB+fv8ZwxP6fX4xehFwMNAGK+wMljKzWZc6Ufd2g0T9OF/NUsKemBTQ8OSabkjl5D WY/1h1mqEqRnDAkh0tORv2RZkP8PWUDBNIeUzp/wl4+C2GLdc2VGlYAtQ2Eq1YkuR1o8W8LfG vo3KRiF9SnuF/xrKZ6XgAxG7Wz+NSIeg0cxO29h3i7C4rTJv1IFoN6q0QUxsamdAsQay9px2J BeepcCH3R5FerEw7jEvnvd34kswioW4JCMPx3YmTHy6aZmqpFKZj/GHy9yGbvgVhp8lZ4JJtO U2taSdSti7PC3jhQcvMKJMFQfxKw0dR8fCMboOxEri6g4Jt9i7BmgJyn1hyFnSv9eszip/W3A eAyVARREUQ3S2bFU8mS5u1GP+0TenLTAR6ILazDC0B9Cx9uaQFU81pnZkGr7axzGoY59Mifi4 rYoItb2hAIYDtYw== Received-SPF: permerror client-ip=212.227.126.134; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On resume igb_vm_state_change() always calls igb_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 igb,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 igb_vm_state_change() into igb_core_post_load() as e1000 does. Buglink: https://issues.redhat.com/browse/RHEL-21867 Suggested-by: Akihiko Odaki Signed-off-by: Laurent Vivier --- hw/net/igb_core.c | 47 +++-------------------------------------------- hw/net/igb_core.h | 2 -- 2 files changed, 3 insertions(+), 46 deletions(-) diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c index 2a7a11aa9ed5..31ab959ab8ff 100644 --- a/hw/net/igb_core.c +++ b/hw/net/igb_core.c @@ -160,14 +160,6 @@ igb_intmgr_timer_resume(IGBIntrDelayTimer *timer) } } -static void -igb_intmgr_timer_pause(IGBIntrDelayTimer *timer) -{ - if (timer->running) { - timer_del(timer->timer); - } -} - static void igb_intrmgr_on_msix_throttling_timer(void *opaque) { @@ -212,16 +204,6 @@ igb_intrmgr_resume(IGBCore *core) } } -static void -igb_intrmgr_pause(IGBCore *core) -{ - int i; - - for (i = 0; i < IGB_INTR_NUM; i++) { - igb_intmgr_timer_pause(&core->eitr[i]); - } -} - static void igb_intrmgr_reset(IGBCore *core) { @@ -4290,12 +4272,6 @@ igb_core_read(IGBCore *core, hwaddr addr, unsigned size) return 0; } -static inline void -igb_autoneg_pause(IGBCore *core) -{ - timer_del(core->autoneg_timer); -} - static void igb_autoneg_resume(IGBCore *core) { @@ -4307,22 +4283,6 @@ igb_autoneg_resume(IGBCore *core) } } -static void -igb_vm_state_change(void *opaque, bool running, RunState state) -{ - IGBCore *core = opaque; - - if (running) { - trace_e1000e_vm_state_running(); - igb_intrmgr_resume(core); - igb_autoneg_resume(core); - } else { - trace_e1000e_vm_state_stopped(); - igb_autoneg_pause(core); - igb_intrmgr_pause(core); - } -} - void igb_core_pci_realize(IGBCore *core, const uint16_t *eeprom_templ, @@ -4335,8 +4295,6 @@ igb_core_pci_realize(IGBCore *core, igb_autoneg_timer, core); igb_intrmgr_pci_realize(core); - core->vmstate = qemu_add_vm_change_state_handler(igb_vm_state_change, core); - for (i = 0; i < IGB_NUM_QUEUES; i++) { net_tx_pkt_init(&core->tx[i].tx_pkt, E1000E_MAX_TX_FRAGS); } @@ -4360,8 +4318,6 @@ igb_core_pci_uninit(IGBCore *core) igb_intrmgr_pci_unint(core); - qemu_del_vm_change_state_handler(core->vmstate); - for (i = 0; i < IGB_NUM_QUEUES; i++) { net_tx_pkt_uninit(core->tx[i].tx_pkt); } @@ -4586,5 +4542,8 @@ igb_core_post_load(IGBCore *core) */ nc->link_down = (core->mac[STATUS] & E1000_STATUS_LU) == 0; + igb_intrmgr_resume(core); + igb_autoneg_resume(core); + return 0; } diff --git a/hw/net/igb_core.h b/hw/net/igb_core.h index bf8c46f26b51..d70b54e318f1 100644 --- a/hw/net/igb_core.h +++ b/hw/net/igb_core.h @@ -90,8 +90,6 @@ struct IGBCore { IGBIntrDelayTimer eitr[IGB_INTR_NUM]; - VMChangeStateEntry *vmstate; - uint32_t eitr_guest_value[IGB_INTR_NUM]; uint8_t permanent_mac[ETH_ALEN];