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Fri, 12 Jun 2026 23:11:54 +0000 (GMT) Received: from smtpav06.wdc07v.mail.ibm.com (smtpav06.wdc07v.mail.ibm.com [10.39.53.233]) by smtprelay05.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 65CNBqje33292988 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Jun 2026 23:11:53 GMT Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D12D75804E; Fri, 12 Jun 2026 23:11:52 +0000 (GMT) Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9B5F65803F; Fri, 12 Jun 2026 23:11:51 +0000 (GMT) Received: from [9.61.160.241] (unknown [9.61.160.241]) by smtpav06.wdc07v.mail.ibm.com (Postfix) with ESMTP; Fri, 12 Jun 2026 23:11:51 +0000 (GMT) Message-ID: Date: Fri, 12 Jun 2026 16:11:50 -0700 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/7] ibmvfc: make ibmvfc login to fabric To: davemarq@linux.ibm.com, "James E.J. Bottomley" , "Martin K. Petersen" , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Brian King , Greg Joyce , Kyle Mahlkuch References: <20260608-ibmvfc-fpin-support-v2-0-d41f540fba5c@linux.ibm.com> <20260608-ibmvfc-fpin-support-v2-3-d41f540fba5c@linux.ibm.com> Content-Language: en-US From: Tyrel Datwyler In-Reply-To: <20260608-ibmvfc-fpin-support-v2-3-d41f540fba5c@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjEyMDIyMCBTYWx0ZWRfX30a1uCGgXRb0 qUbqHu2cdSeRywaflWXHobQUOhAbzGhPuR03LDyK4Vw47w23lA7lg1R6r4MS+NhZFvINsiay/3t krGWMQIkmuC43DaPuaHAPNiG9SKwhfU= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjEyMDIyMCBTYWx0ZWRfX6MioWJsnb8Fm TiC25s6c/s0RMw4GJLrjAkJH8EU2XBAE9tNEWOSXxhqgL58hpbwqJSqAiWQ3QG6n0c5m3EAqO1D 3IJUiGSHKkrrX0g8MVY2xUenm7QDFV/6DXKSuOO/OJgHrQSsjyhCclNLiWPM/e6xKAf2EB2pH1+ 2L9mVQGvio6RTnXqaRAvQZKCeoGpUa0G9rX/T6Rj7MO+KjnrhiN5BQnUPtJqFoHldJ0eDI8gUo3 Ic2iKcYjb7GAzK0pigPnQnWvSvqUkq28SXxViHM7Q1K6e5uRBJJEciAXXCMggTGQsiWFKZzOK/x UxtjbO0eABdFY+NK3HqIve9In/bM7YDkMwMzV6C/j+GfrwaFx21KaQYgvA7OUavG6qDz1gGn2qc M7+mbm4PrlsLCEJDuLR6E1OhbomVrRlDtuAy6n2mLPT8fRJUewCAVtd/ikd5l0drEQ5IWrZN2hg joQZ+3aYcZprUqci0vg== X-Proofpoint-ORIG-GUID: lnI6gV-ZIlmvnu72oD7TXbKnTxSK6fzV X-Authority-Analysis: v=2.4 cv=GIM41ONK c=1 sm=1 tr=0 ts=6a2c923c cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=rJ4d5xbAOQceQwH0KXUA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: hhYXZCFmBA_lzEO61kTaD4YLRPAYOEO8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-12_03,2026-06-12_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606120220 On 6/8/26 11:30 AM, Dave Marquardt via B4 Relay wrote: > From: Dave Marquardt > > Add support for fabric login in order to support the asynchronous > event queue with its own interrupt as required by NPIV specification > to support the asynchronous sub-queue and interrupt in order to > support full and extended FPIN messages. > --- > drivers/scsi/ibmvscsi/ibmvfc.c | 94 ++++++++++++++++++++++++++++++++++++++++-- > drivers/scsi/ibmvscsi/ibmvfc.h | 16 +++++++ > 2 files changed, 106 insertions(+), 4 deletions(-) > > diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c > index 88386d7c9106..a18861808325 100644 > --- a/drivers/scsi/ibmvscsi/ibmvfc.c > +++ b/drivers/scsi/ibmvscsi/ibmvfc.c > @@ -5244,6 +5244,86 @@ static void ibmvfc_discover_targets(struct ibmvfc_host *vhost) > ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); > } > > +static void ibmvfc_fabric_login_done(struct ibmvfc_event *evt) > +{ > + struct ibmvfc_fabric_login *rsp = &evt->xfer_iu->fabric_login; > + u32 mad_status = be16_to_cpu(rsp->common.status); > + struct ibmvfc_host *vhost = evt->vhost; > + int level = IBMVFC_DEFAULT_LOG_LEVEL; > + > + ENTER; > + > + switch (mad_status) { > + case IBMVFC_MAD_SUCCESS: > + fc_host_port_id(vhost->host) = be64_to_cpu(rsp->nport_id); > + ibmvfc_free_event(evt); > + break; > + > + case IBMVFC_MAD_FAILED: > + if (ibmvfc_retry_cmd(be16_to_cpu(rsp->status), be16_to_cpu(rsp->error))) > + level += ibmvfc_retry_host_init(vhost); > + else > + ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); > + ibmvfc_log(vhost, level, "Fabric Login failed: %s (%x:%x)\n", > + ibmvfc_get_cmd_error(be16_to_cpu(rsp->status), be16_to_cpu(rsp->error)), > + be16_to_cpu(rsp->status), be16_to_cpu(rsp->error)); > + ibmvfc_free_event(evt); > + LEAVE; > + return; > + > + case IBMVFC_MAD_CRQ_ERROR: > + ibmvfc_retry_host_init(vhost); > + fallthrough; > + > + case IBMVFC_MAD_DRIVER_FAILED: > + ibmvfc_free_event(evt); > + LEAVE; > + return; > + > + default: > + dev_err(vhost->dev, "Invalid fabric Login response: 0x%x\n", mad_status); > + ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); > + ibmvfc_free_event(evt); > + LEAVE; > + return; > + } > + > + ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); > + wake_up(&vhost->work_wait_q); > + > + LEAVE; > +} > + > +static void ibmvfc_fabric_login(struct ibmvfc_host *vhost) > +{ > + struct ibmvfc_fabric_login *mad; > + struct ibmvfc_event *evt = ibmvfc_get_reserved_event(&vhost->crq); > + int level = IBMVFC_DEFAULT_LOG_LEVEL; > + > + if (!evt) { > + ibmvfc_log(vhost, level, "Fabric Login failed: no available events\n"); > + ibmvfc_hard_reset_host(vhost); > + return; > + } > + > + ibmvfc_init_event(evt, ibmvfc_fabric_login_done, IBMVFC_MAD_FORMAT); > + mad = &evt->iu.fabric_login; > + memset(mad, 0, sizeof(*mad)); > + if (vhost->scsi_scrqs.protocol == IBMVFC_PROTO_SCSI) > + mad->common.opcode = cpu_to_be32(IBMVFC_FABRIC_LOGIN); > + else { > + ibmvfc_log(vhost, level, "Fabric Login failed: unknown protocol\n"); > + return; > + } This check is pretty pedantic. Seeing as you are directly referencing the scsi sub-crqs. The protocol field exists so we can pass the sub-crqs blindly and the code once NVMf comes along can determine the protocol. Also, if somehow this was ever possibly the case you would leak the event structure. I think we can drop the check all together. -Tyrel