From patchwork Thu Nov 26 00:04:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932391 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 E34DBC56201 for ; Thu, 26 Nov 2020 00:13:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AD0820872 for ; Thu, 26 Nov 2020 00:13:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="mGbszlZB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727315AbgKZAN1 (ORCPT ); Wed, 25 Nov 2020 19:13:27 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47116 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728350AbgKZAN1 (ORCPT ); Wed, 25 Nov 2020 19:13:27 -0500 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AQ02ZOI114753; Wed, 25 Nov 2020 19:13:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=0lWDTDSz1dPOr5lrUPX8QW3utRI69g9d8XRhFBfcnR4=; b=mGbszlZB3wnQfjQmfInR/wxRHyGGD0Ezo9PPH4NkaTIWfGQ6xGfWRBRbkqczfCIllOvm jn7rwxJgcQu5ia3vBxI8pIW0uXXGPvdtXI9OIgkTQhJjj1IcQ+6rl1FjrKBsJfOdBHcQ Y0+3VqLk0npnWvZKw9jVJIR9aivViFkTDPEy1zwFLXXWZDjFOjAZIAyfapLDsat9vvX8 JI+Sh5XbCV20ZwwiGgkG4vYLJD3QzxnvEX+Jf4TvCfMpgc9fh+9qUejowihWAimfsYie +xNBeBqsf2XOR/6v8NUvAmjhSrzQPTdTlfhFBjcbpQaLElOUocpO9M5/D3CApPfpm4jG OQ== Received: from ppma01wdc.us.ibm.com (fd.55.37a9.ip4.static.sl-reverse.com [169.55.85.253]) by mx0a-001b2d01.pphosted.com with ESMTP id 351q2us8g5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Nov 2020 19:13:23 -0500 Received: from pps.filterd (ppma01wdc.us.ibm.com [127.0.0.1]) by ppma01wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0APNsDH6030700; Thu, 26 Nov 2020 00:09:27 GMT Received: from b01cxnp22035.gho.pok.ibm.com (b01cxnp22035.gho.pok.ibm.com [9.57.198.25]) by ppma01wdc.us.ibm.com with ESMTP id 34xth9b443-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 00:09:27 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp22035.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09Qgs63635954 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:27 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DC75EAC059; Thu, 26 Nov 2020 00:09:26 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7474AAC05E; Thu, 26 Nov 2020 00:09:26 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:26 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 1/9] ibmvnic: handle inconsistent login with reset Date: Wed, 25 Nov 2020 18:04:24 -0600 Message-Id: <20201126000432.29897-2-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 suspectscore=1 impostorscore=0 bulkscore=0 mlxlogscore=703 priorityscore=1501 clxscore=1015 lowpriorityscore=0 adultscore=0 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Inconsistent login with the vnicserver is causing the device to be removed. This does not give the device a chance to recover from error state. This patch schedules a FATAL reset instead to bring the adapter up. Fixes: 032c5e82847a2 ("Driver for IBM System i/p VNIC protocol") Signed-off-by: Dany Madden Signed-off-by: Lijun Pan --- drivers/net/ethernet/ibm/ibmvnic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 2aa40b2f225c..dcb23015b6b4 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -4412,7 +4412,7 @@ static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, adapter->req_rx_add_queues != be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); - ibmvnic_remove(adapter->vdev); + ibmvnic_reset(adapter, VNIC_RESET_FATAL); return -EIO; } size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + From patchwork Thu Nov 26 00:04:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932387 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 500E9C56202 for ; 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Thu, 26 Nov 2020 00:09:36 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09ZaP721658 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:35 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9F569AC05B; Thu, 26 Nov 2020 00:09:35 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 402B0AC059; Thu, 26 Nov 2020 00:09:35 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:35 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 2/9] ibmvnic: stop free_all_rwi on failed reset Date: Wed, 25 Nov 2020 18:04:25 -0600 Message-Id: <20201126000432.29897-3-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 suspectscore=3 phishscore=0 priorityscore=1501 spamscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org When ibmvnic fails to reset, it breaks out of the reset loop and frees all of the remaining resets from the workqueue. Doing so prevents the adapter from recovering if no reset is scheduled after that. Instead, have the driver continue to process resets on the workqueue. Remove the no longer need free_all_rwi(). Fixes: ed651a10875f1 ("ibmvnic: Updated reset handling") Signed-off-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.c | 22 +++------------------- 1 file changed, 3 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index dcb23015b6b4..d5a927bb4954 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2173,17 +2173,6 @@ static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) return rwi; } -static void free_all_rwi(struct ibmvnic_adapter *adapter) -{ - struct ibmvnic_rwi *rwi; - - rwi = get_next_rwi(adapter); - while (rwi) { - kfree(rwi); - rwi = get_next_rwi(adapter); - } -} - static void __ibmvnic_reset(struct work_struct *work) { struct ibmvnic_rwi *rwi; @@ -2253,9 +2242,9 @@ static void __ibmvnic_reset(struct work_struct *work) else adapter->state = reset_state; rc = 0; - } else if (rc && rc != IBMVNIC_INIT_FAILED && - !adapter->force_reset_recovery) - break; + } + if (rc) + netdev_dbg(adapter->netdev, "Reset failed, rc=%d\n", rc); rwi = get_next_rwi(adapter); @@ -2269,11 +2258,6 @@ static void __ibmvnic_reset(struct work_struct *work) complete(&adapter->reset_done); } - if (rc) { - netdev_dbg(adapter->netdev, "Reset failed\n"); - free_all_rwi(adapter); - } - clear_bit_unlock(0, &adapter->resetting); } From patchwork Thu Nov 26 00:04:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932375 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 DEADFC56202 for ; 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Thu, 26 Nov 2020 00:09:36 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09ahJ64094642 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:36 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E778AC05E; Thu, 26 Nov 2020 00:09:36 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BAAB9AC064; Thu, 26 Nov 2020 00:09:35 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:35 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 3/9] ibmvnic: avoid memset null scrq msgs Date: Wed, 25 Nov 2020 18:04:26 -0600 Message-Id: <20201126000432.29897-4-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxlogscore=999 suspectscore=3 mlxscore=0 malwarescore=0 impostorscore=0 clxscore=1015 bulkscore=0 adultscore=0 priorityscore=1501 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org scrq->msgs could be NULL during device reset, causing Linux to crash. So, check before memset scrq->msgs. Fixes: c8b2ad0a4a901 ("ibmvnic: Sanitize entire SCRQ buffer on reset") Signed-off-by: Dany Madden Signed-off-by: Lijun Pan --- drivers/net/ethernet/ibm/ibmvnic.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index d5a927bb4954..b08f95017825 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2845,15 +2845,26 @@ static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter, { int rc; + if (!scrq) { + netdev_dbg(adapter->netdev, + "Invalid scrq reset. irq (%d) or msgs (%p).\n", + scrq->irq, scrq->msgs); + return -EINVAL; + } + if (scrq->irq) { free_irq(scrq->irq, scrq); irq_dispose_mapping(scrq->irq); scrq->irq = 0; } - - memset(scrq->msgs, 0, 4 * PAGE_SIZE); - atomic_set(&scrq->used, 0); - scrq->cur = 0; + if (scrq->msgs) { + memset(scrq->msgs, 0, 4 * PAGE_SIZE); + atomic_set(&scrq->used, 0); + scrq->cur = 0; + } else { + netdev_dbg(adapter->netdev, "Invalid scrq reset\n"); + return -EINVAL; + } rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); From patchwork Thu Nov 26 00:04:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932389 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 DFDC4C6379D for ; Thu, 26 Nov 2020 00:09:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A12B420872 for ; 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Thu, 26 Nov 2020 00:09:36 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 4/9] ibmvnic: restore adapter state on failed reset Date: Wed, 25 Nov 2020 18:04:27 -0600 Message-Id: <20201126000432.29897-5-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 suspectscore=1 mlxscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org In a failed reset, driver could end up in VNIC_PROBED or VNIC_CLOSED state and cannot recover in subsequent resets, leaving it offline. This patch restores the adapter state to reset_state, the original state when reset was called. Fixes: b27507bb59ed5 ("net/ibmvnic: unlock rtnl_lock in reset so linkwatch_event can run") Fixes: 2770a7984db58 ("ibmvnic: Introduce hard reset recovery") Signed-off-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.c | 67 ++++++++++++++++-------------- 1 file changed, 36 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index b08f95017825..ff474a790181 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -1857,7 +1857,7 @@ static int do_change_param_reset(struct ibmvnic_adapter *adapter, if (reset_state == VNIC_OPEN) { rc = __ibmvnic_close(netdev); if (rc) - return rc; + goto out; } release_resources(adapter); @@ -1875,24 +1875,25 @@ static int do_change_param_reset(struct ibmvnic_adapter *adapter, } rc = ibmvnic_reset_init(adapter, true); - if (rc) - return IBMVNIC_INIT_FAILED; + if (rc) { + rc = IBMVNIC_INIT_FAILED; + goto out; + } /* If the adapter was in PROBE state prior to the reset, * exit here. */ if (reset_state == VNIC_PROBED) - return 0; + goto out; rc = ibmvnic_login(netdev); if (rc) { - adapter->state = reset_state; - return rc; + goto out; } rc = init_resources(adapter); if (rc) - return rc; + goto out; ibmvnic_disable_irqs(adapter); @@ -1902,8 +1903,10 @@ static int do_change_param_reset(struct ibmvnic_adapter *adapter, return 0; rc = __ibmvnic_open(netdev); - if (rc) - return IBMVNIC_OPEN_FAILED; + if (rc) { + rc = IBMVNIC_OPEN_FAILED; + goto out; + } /* refresh device's multicast list */ ibmvnic_set_multi(netdev); @@ -1912,7 +1915,10 @@ static int do_change_param_reset(struct ibmvnic_adapter *adapter, for (i = 0; i < adapter->req_rx_queues; i++) napi_schedule(&adapter->napi[i]); - return 0; +out: + if (rc) + adapter->state = reset_state; + return rc; } /** @@ -2015,7 +2021,6 @@ static int do_reset(struct ibmvnic_adapter *adapter, rc = ibmvnic_login(netdev); if (rc) { - adapter->state = reset_state; goto out; } @@ -2083,6 +2088,9 @@ static int do_reset(struct ibmvnic_adapter *adapter, rc = 0; out: + /* restore the adapter state if reset failed */ + if (rc) + adapter->state = reset_state; rtnl_unlock(); return rc; @@ -2115,43 +2123,46 @@ static int do_hard_reset(struct ibmvnic_adapter *adapter, if (rc) { netdev_err(adapter->netdev, "Couldn't initialize crq. rc=%d\n", rc); - return rc; + goto out; } rc = ibmvnic_reset_init(adapter, false); if (rc) - return rc; + goto out; /* If the adapter was in PROBE state prior to the reset, * exit here. */ if (reset_state == VNIC_PROBED) - return 0; + goto out; rc = ibmvnic_login(netdev); - if (rc) { - adapter->state = VNIC_PROBED; - return 0; - } + if (rc) + goto out; rc = init_resources(adapter); if (rc) - return rc; + goto out; ibmvnic_disable_irqs(adapter); adapter->state = VNIC_CLOSED; if (reset_state == VNIC_CLOSED) - return 0; + goto out; rc = __ibmvnic_open(netdev); - if (rc) - return IBMVNIC_OPEN_FAILED; + if (rc) { + rc = IBMVNIC_OPEN_FAILED; + goto out; + } call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev); call_netdevice_notifiers(NETDEV_RESEND_IGMP, netdev); - - return 0; +out: + /* restore adapter state if reset failed */ + if (rc) + adapter->state = reset_state; + return rc; } static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) @@ -2236,13 +2247,7 @@ static void __ibmvnic_reset(struct work_struct *work) rc = do_reset(adapter, rwi, reset_state); } kfree(rwi); - if (rc == IBMVNIC_OPEN_FAILED) { - if (list_empty(&adapter->rwi_list)) - adapter->state = VNIC_CLOSED; - else - adapter->state = reset_state; - rc = 0; - } + if (rc) netdev_dbg(adapter->netdev, "Reset failed, rc=%d\n", rc); From patchwork Thu Nov 26 00:04:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932377 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 999E9C6379D for ; 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Thu, 26 Nov 2020 00:09:37 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09bnr6947382 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:37 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1CB07AC060; Thu, 26 Nov 2020 00:09:37 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BE5A6AC059; Thu, 26 Nov 2020 00:09:36 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:36 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH net v3 5/9] ibmvnic: delay next reset if hard reset fails Date: Wed, 25 Nov 2020 18:04:28 -0600 Message-Id: <20201126000432.29897-6-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 suspectscore=1 mlxscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Sukadev Bhattiprolu If auto-priority failover is enabled, the backing device needs time to settle if hard resetting fails for any reason. Add a delay of 60 seconds before retrying the hard-reset. Fixes: 2770a7984db5 ("ibmvnic: Introduce hard reset recovery") Signed-off-by: Sukadev Bhattiprolu --- drivers/net/ethernet/ibm/ibmvnic.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index ff474a790181..e2f9b0e9dea8 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2242,6 +2242,14 @@ static void __ibmvnic_reset(struct work_struct *work) rc = do_hard_reset(adapter, rwi, reset_state); rtnl_unlock(); } + if (rc) { + /* give backing device time to settle down */ + netdev_dbg(adapter->netdev, + "[S:%d] Hard reset failed, waiting 60 secs\n", + adapter->state); + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(60 * HZ); + } } else if (!(rwi->reset_reason == VNIC_RESET_FATAL && adapter->from_passive_init)) { rc = do_reset(adapter, rwi, reset_state); From patchwork Thu Nov 26 00:04:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932381 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 07235C56202 for ; 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Thu, 26 Nov 2020 00:09:38 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09bSb16253626 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:37 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 91487AC05F; Thu, 26 Nov 2020 00:09:37 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3ED0DAC05B; Thu, 26 Nov 2020 00:09:37 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:37 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH net v3 6/9] ibmvnic: track pending login Date: Wed, 25 Nov 2020 18:04:29 -0600 Message-Id: <20201126000432.29897-7-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 impostorscore=0 bulkscore=0 suspectscore=3 adultscore=0 spamscore=0 mlxlogscore=892 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Sukadev Bhattiprolu If after ibmvnic sends a LOGIN it gets a FAILOVER, it is possible that the worker thread will start reset process and free the login response buffer before it gets a (now stale) LOGIN_RSP. The ibmvnic tasklet will then try to access the login response buffer and crash. Have ibmvnic track pending logins and discard any stale login responses. Fixes: 032c5e82847a ("Driver for IBM System i/p VNIC protocol") Signed-off-by: Sukadev Bhattiprolu --- drivers/net/ethernet/ibm/ibmvnic.c | 17 +++++++++++++++++ drivers/net/ethernet/ibm/ibmvnic.h | 1 + 2 files changed, 18 insertions(+) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index e2f9b0e9dea8..55b07bd4c741 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -3839,6 +3839,8 @@ static int send_login(struct ibmvnic_adapter *adapter) crq.login.cmd = LOGIN; crq.login.ioba = cpu_to_be32(buffer_token); crq.login.len = cpu_to_be32(buffer_size); + + adapter->login_pending = true; ibmvnic_send_crq(adapter, &crq); return 0; @@ -4391,6 +4393,15 @@ static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, u64 *size_array; int i; + /* CHECK: Test/set of login_pending does not need to be atomic + * because only ibmvnic_tasklet tests/clears this. + */ + if (!adapter->login_pending) { + netdev_warn(netdev, "Ignoring unexpected login response\n"); + return 0; + } + adapter->login_pending = false; + dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, DMA_TO_DEVICE); dma_unmap_single(dev, adapter->login_rsp_buf_token, @@ -4762,6 +4773,11 @@ static void ibmvnic_handle_crq(union ibmvnic_crq *crq, case IBMVNIC_CRQ_INIT: dev_info(dev, "Partner initialized\n"); adapter->from_passive_init = true; + /* Discard any stale login responses from prev reset. + * CHECK: should we clear even on INIT_COMPLETE? + */ + adapter->login_pending = false; + if (!completion_done(&adapter->init_done)) { complete(&adapter->init_done); adapter->init_done_rc = -EIO; @@ -5191,6 +5207,7 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) dev_set_drvdata(&dev->dev, netdev); adapter->vdev = dev; adapter->netdev = netdev; + adapter->login_pending = false; ether_addr_copy(adapter->mac_addr, mac_addr_p); ether_addr_copy(netdev->dev_addr, adapter->mac_addr); diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index 217dcc7ded70..6f0a701c4a38 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -1087,6 +1087,7 @@ struct ibmvnic_adapter { struct delayed_work ibmvnic_delayed_reset; unsigned long resetting; bool napi_enabled, from_passive_init; + bool login_pending; bool failover_pending; bool force_reset_recovery; From patchwork Thu Nov 26 00:04:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932379 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 863A3C56201 for ; Thu, 26 Nov 2020 00:09:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 30B4C20B1F for ; 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Thu, 26 Nov 2020 00:09:37 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 7/9] ibmvnic: send_login should check for crq errors Date: Wed, 25 Nov 2020 18:04:30 -0600 Message-Id: <20201126000432.29897-8-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=999 impostorscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 mlxscore=0 adultscore=0 clxscore=1015 suspectscore=1 malwarescore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org send_login() does not check for the result of ibmvnic_send_crq() of the login request. This results in the driver needlessly retrying the login 10 times even when CRQ is no longer active. Check the return code and give up in case of errors in sending the CRQ. The only time we want to retry is if we get a PARITALSUCCESS response from the partner. Fixes: 032c5e82847a2 ("Driver for IBM System i/p VNIC protocol") Signed-off-by: Dany Madden Signed-off-by: Sukadev Bhattiprolu --- drivers/net/ethernet/ibm/ibmvnic.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 55b07bd4c741..9005fab09e15 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -850,10 +850,8 @@ static int ibmvnic_login(struct net_device *netdev) adapter->init_done_rc = 0; reinit_completion(&adapter->init_done); rc = send_login(adapter); - if (rc) { - netdev_warn(netdev, "Unable to login\n"); + if (rc) return rc; - } if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { @@ -3727,15 +3725,16 @@ static int send_login(struct ibmvnic_adapter *adapter) struct ibmvnic_login_rsp_buffer *login_rsp_buffer; struct ibmvnic_login_buffer *login_buffer; struct device *dev = &adapter->vdev->dev; + struct vnic_login_client_data *vlcd; dma_addr_t rsp_buffer_token; dma_addr_t buffer_token; size_t rsp_buffer_size; union ibmvnic_crq crq; + int client_data_len; size_t buffer_size; __be64 *tx_list_p; __be64 *rx_list_p; - int client_data_len; - struct vnic_login_client_data *vlcd; + int rc; int i; if (!adapter->tx_scrq || !adapter->rx_scrq) { @@ -3841,16 +3840,23 @@ static int send_login(struct ibmvnic_adapter *adapter) crq.login.len = cpu_to_be32(buffer_size); adapter->login_pending = true; - ibmvnic_send_crq(adapter, &crq); + rc = ibmvnic_send_crq(adapter, &crq); + if (rc) { + adapter->login_pending = false; + netdev_err(adapter->netdev, "Failed to send login, rc=%d\n", rc); + goto buf_rsp_map_failed; + } return 0; buf_rsp_map_failed: kfree(login_rsp_buffer); + adapter->login_rsp_buf = NULL; buf_rsp_alloc_failed: dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); buf_map_failed: kfree(login_buffer); + adapter->login_buf = NULL; buf_alloc_failed: return -1; } From patchwork Thu Nov 26 00:04:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932385 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 91A13C6379D for ; Thu, 26 Nov 2020 00:09:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C33920B1F for ; Thu, 26 Nov 2020 00:09:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="Kjt31/yB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729798AbgKZAJs (ORCPT ); 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Thu, 26 Nov 2020 00:09:38 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 8/9] ibmvnic: no reset timeout for 5 seconds after reset Date: Wed, 25 Nov 2020 18:04:31 -0600 Message-Id: <20201126000432.29897-9-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxlogscore=999 suspectscore=1 mlxscore=0 malwarescore=0 impostorscore=0 clxscore=1015 bulkscore=0 adultscore=0 priorityscore=1501 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Reset timeout is going off right after adapter reset. This patch ensures that timeout is scheduled if it has been 5 seconds since the last reset. 5 seconds is the default watchdog timeout. Fixes: ed651a10875f1 ("ibmvnic: Updated reset handling") Signed-off-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.c | 11 +++++++++-- drivers/net/ethernet/ibm/ibmvnic.h | 2 ++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 9005fab09e15..a17856be2828 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2253,6 +2253,7 @@ static void __ibmvnic_reset(struct work_struct *work) rc = do_reset(adapter, rwi, reset_state); } kfree(rwi); + adapter->last_reset_time = jiffies; if (rc) netdev_dbg(adapter->netdev, "Reset failed, rc=%d\n", rc); @@ -2356,7 +2357,13 @@ static void ibmvnic_tx_timeout(struct net_device *dev, unsigned int txqueue) "Adapter is resetting, skip timeout reset\n"); return; } - + /* No queuing up reset until at least 5 seconds (default watchdog val) + * after last reset + */ + if (time_before(jiffies, (adapter->last_reset_time + dev->watchdog_timeo))) { + netdev_dbg(dev, "Not yet time to tx timeout.\n"); + return; + } ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT); } @@ -5277,7 +5284,7 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) adapter->state = VNIC_PROBED; adapter->wait_for_reset = false; - + adapter->last_reset_time = jiffies; return 0; ibmvnic_register_fail: diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index 6f0a701c4a38..b21092f5f9c1 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -1088,6 +1088,8 @@ struct ibmvnic_adapter { unsigned long resetting; bool napi_enabled, from_passive_init; bool login_pending; + /* last device reset time */ + unsigned long last_reset_time; bool failover_pending; bool force_reset_recovery; From patchwork Thu Nov 26 00:04:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 11932383 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 21AB2C56201 for ; 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Thu, 26 Nov 2020 00:09:40 +0000 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ09d2i9896592 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 00:09:39 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0DCACAC059; Thu, 26 Nov 2020 00:09:39 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A3A8BAC05F; Thu, 26 Nov 2020 00:09:38 +0000 (GMT) Received: from linux-i8xm.aus.stglabs.ibm.com (unknown [9.40.195.200]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 00:09:38 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: ljp@linux.ibm.com, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, Dany Madden Subject: [PATCH net v3 9/9] ibmvnic: reduce wait for completion time Date: Wed, 25 Nov 2020 18:04:32 -0600 Message-Id: <20201126000432.29897-10-drt@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126000432.29897-1-drt@linux.ibm.com> References: <20201126000432.29897-1-drt@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_07:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 suspectscore=1 mlxscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240121 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Reduce the wait time for Command Response Queue response from 30 seconds to 20 seconds, as recommended by VIOS and Power Hypervisor teams. Fixes: bd0b672313941 ("ibmvnic: Move login and queue negotiation into ibmvnic_open") Fixes: 53da09e92910f ("ibmvnic: Add set_link_state routine for setting adapter link state") Signed-off-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index a17856be2828..d6b2686aed0f 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -834,7 +834,7 @@ static void release_napi(struct ibmvnic_adapter *adapter) static int ibmvnic_login(struct net_device *netdev) { struct ibmvnic_adapter *adapter = netdev_priv(netdev); - unsigned long timeout = msecs_to_jiffies(30000); + unsigned long timeout = msecs_to_jiffies(20000); int retry_count = 0; int retries = 10; bool retry; @@ -938,7 +938,7 @@ static void release_resources(struct ibmvnic_adapter *adapter) static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state) { struct net_device *netdev = adapter->netdev; - unsigned long timeout = msecs_to_jiffies(30000); + unsigned long timeout = msecs_to_jiffies(20000); union ibmvnic_crq crq; bool resend; int rc; @@ -5125,7 +5125,7 @@ static int init_crq_queue(struct ibmvnic_adapter *adapter) static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter, bool reset) { struct device *dev = &adapter->vdev->dev; - unsigned long timeout = msecs_to_jiffies(30000); + unsigned long timeout = msecs_to_jiffies(20000); u64 old_num_rx_queues, old_num_tx_queues; int rc;