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Tue, 23 Jun 2026 01:30:40 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (smtpav04.dal12v.mail.ibm.com [10.241.53.103]) by smtprelay04.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 65N1Uddp31130340 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 23 Jun 2026 01:30:39 GMT Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E08DF5805A; Tue, 23 Jun 2026 01:30:38 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5182D58056; Tue, 23 Jun 2026 01:30:38 +0000 (GMT) Received: from li-4c4c4544-0054-3910-8039-c3c04f423534.ibm.com.com (unknown [9.61.188.206]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 23 Jun 2026 01:30:38 +0000 (GMT) From: Tyrel Datwyler To: james.bottomley@hansenpartnership.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, davemarq@linux.ibm.com, Tyrel Datwyler Subject: [PATCH 01/29] ibmvfc: move target list from host to protocol specific channel groups Date: Mon, 22 Jun 2026 18:30:07 -0700 Message-ID: <20260623013035.3436640-2-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260623013035.3436640-1-tyreld@linux.ibm.com> References: <20260623013035.3436640-1-tyreld@linux.ibm.com> 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 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=X4Ni7mTe c=1 sm=1 tr=0 ts=6a39e1c1 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=jQP8Ix9JCXI5f8BnMGsA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjIzMDAwOCBTYWx0ZWRfX0vZI+ORt53dP weSvfqmdR/efbKUQ5v5K/E0qssT94aFbHSAheNMG5Rx0xzoVTfDOjsn1lLZmjOF638BVokzgMz7 nBeKWJztngdnQakXL7rbkNzijc0mpXs= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjIzMDAwOCBTYWx0ZWRfX2/S+BSUYHBiZ FLPQu/z1ycP+bJwjkrHp0q/pUDgDHLDFOsEXBz+t0AMDvPYPY9+DMfjaH/MImr/TaycZnJQZg8A XsqD+D7vzLUg9xnHMkEzrFyeHSpuplu8591FdPs4N2coLHuZTUCE0PV5txi1TTL7RBJ0ElCw/jJ pZwRgSVqaVWPCMCdWAOGBCV1iwjJyRGFOvD2WB/cAbNjEKYcOQKtXHu5YQ1OGVtNM5owdU4lFpW ZLIuPygr8waB13HtJPFxPfIfGVMzzVmlOgsM5GsnuYdxn/CExeZ2w0astGslDRKs7DnHCI/avuL DXQ2bNE/bXIEV15uD1g+m1kIbB7s69sn0QH1fqQOtsaM6UTOmG2p6qX+zGBiqcP8TuDGmRDCdmE ZD9o9ca1ywVjDajrZNae7JfDML4C3Iw4uzVY75CI5+exoteXFDqktcmVBfozpYZcmI2WThk0uxC lAiWk5Nzsr5xSGCUMvw== X-Proofpoint-ORIG-GUID: IeMtDDTIc6UJVMkxsARYQVLJ691oEuqg X-Proofpoint-GUID: IeMtDDTIc6UJVMkxsARYQVLJ691oEuqg 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=2026-06-23_01,2026-06-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606230008 Prepare the driver for protocol-specific target management by moving the target list and target count out of struct ibmvfc_host and into struct ibmvfc_channels. Today the driver only maintains a single SCSI target list, but NVMe/FC support will require separate target tracking for each protocol-specific channel group. Update the existing target iteration, allocation, and discovery paths to use the SCSI channel group's target list instead of a host-wide list. This is a preparatory refactoring only. No functional change is intended for existing SCSI operation. Signed-off-by: Tyrel Datwyler --- drivers/scsi/ibmvscsi/ibmvfc.c | 52 +++++++++++++++++----------------- drivers/scsi/ibmvscsi/ibmvfc.h | 4 +-- 2 files changed, 28 insertions(+), 28 deletions(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 3dd2adda195e..912901436442 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -682,7 +682,7 @@ static void ibmvfc_link_down(struct ibmvfc_host *vhost, ENTER; scsi_block_requests(vhost->host); - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) ibmvfc_del_tgt(tgt); ibmvfc_set_host_state(vhost, state); ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); @@ -715,7 +715,7 @@ static void ibmvfc_init_host(struct ibmvfc_host *vhost) memset(vhost->async_crq.msgs.async, 0, PAGE_SIZE); vhost->async_crq.cur = 0; - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (vhost->client_migrated) tgt->need_login = 1; else @@ -1232,7 +1232,7 @@ static struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) struct ibmvfc_host *vhost = shost_priv(shost); struct ibmvfc_target *tgt; - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) if (tgt->target_id == starget->id) { kref_get(&tgt->kref); return tgt; @@ -1832,7 +1832,7 @@ static void ibmvfc_relogin(struct scsi_device *sdev) unsigned long flags; spin_lock_irqsave(vhost->host->host_lock, flags); - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (rport == tgt->rport) { ibmvfc_del_tgt(tgt); break; @@ -2130,7 +2130,7 @@ static int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id) ENTER; spin_lock_irqsave(vhost->host->host_lock, flags); - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->scsi_id == port_id) { issue_login = 0; break; @@ -3102,7 +3102,7 @@ static void ibmvfc_terminate_rport_io(struct fc_rport *rport) spin_lock_irqsave(shost->host_lock, flags); found = 0; - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->scsi_id == rport->port_id) { found++; break; @@ -3242,7 +3242,7 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, case IBMVFC_AE_ELS_LOGO: case IBMVFC_AE_ELS_PRLO: case IBMVFC_AE_ELS_PLOGI: - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (!crq->scsi_id && !crq->wwpn && !crq->node_name) break; if (crq->scsi_id && cpu_to_be64(tgt->scsi_id) != crq->scsi_id) @@ -4863,14 +4863,14 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, /* Look to see if we already have a target allocated for this SCSI ID or WWPN */ spin_lock_irqsave(vhost->host->host_lock, flags); - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->wwpn == wwpn) { wtgt = tgt; break; } } - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->scsi_id == scsi_id) { stgt = tgt; break; @@ -4927,7 +4927,7 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); spin_lock_irqsave(vhost->host->host_lock, flags); tgt->cancel_key = vhost->task_set++; - list_add_tail(&tgt->queue, &vhost->targets); + list_add_tail(&tgt->queue, &vhost->scsi_scrqs.targets); unlock_out: spin_unlock_irqrestore(vhost->host->host_lock, flags); @@ -4945,7 +4945,7 @@ static int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) { int i, rc; - for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) + for (i = 0, rc = 0; !rc && i < vhost->scsi_scrqs.num_targets; i++) rc = ibmvfc_alloc_target(vhost, &vhost->scsi_scrqs.disc_buf[i]); return rc; @@ -4966,8 +4966,8 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) switch (mad_status) { case IBMVFC_MAD_SUCCESS: ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); - vhost->num_targets = min_t(u32, be32_to_cpu(rsp->num_written), - max_targets); + vhost->scsi_scrqs.num_targets = min_t(u32, be32_to_cpu(rsp->num_written), + max_targets); ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); break; case IBMVFC_MAD_FAILED: @@ -5383,7 +5383,7 @@ static int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) { struct ibmvfc_target *tgt; - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_INIT || tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) return 1; @@ -5403,7 +5403,7 @@ static int ibmvfc_dev_logo_to_do(struct ibmvfc_host *vhost) { struct ibmvfc_target *tgt; - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_LOGOUT_RPORT || tgt->action == IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT) return 1; @@ -5433,10 +5433,10 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) case IBMVFC_HOST_ACTION_QUERY_TGTS: if (vhost->discovery_threads == disc_threads) return 0; - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) if (tgt->action == IBMVFC_TGT_ACTION_INIT) return 1; - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) return 0; return 1; @@ -5444,10 +5444,10 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: if (vhost->discovery_threads == disc_threads) return 0; - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) if (tgt->action == IBMVFC_TGT_ACTION_LOGOUT_RPORT) return 1; - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) if (tgt->action == IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT) return 0; return 1; @@ -5635,12 +5635,12 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost) vhost->job_step(vhost); break; case IBMVFC_HOST_ACTION_QUERY: - list_for_each_entry(tgt, &vhost->targets, queue) + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); break; case IBMVFC_HOST_ACTION_QUERY_TGTS: - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_INIT) { tgt->job_step(tgt); break; @@ -5652,7 +5652,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost) break; case IBMVFC_HOST_ACTION_TGT_DEL: case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_LOGOUT_RPORT) { tgt->job_step(tgt); break; @@ -5664,7 +5664,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost) return; } - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { tgt_dbg(tgt, "Deleting rport\n"); rport = tgt->rport; @@ -5739,7 +5739,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost) spin_lock_irqsave(vhost->host->host_lock, flags); break; case IBMVFC_HOST_ACTION_TGT_INIT: - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->action == IBMVFC_TGT_ACTION_INIT) { tgt->job_step(tgt); break; @@ -6276,7 +6276,7 @@ static void ibmvfc_rport_add_thread(struct work_struct *work) if (vhost->state != IBMVFC_ACTIVE) break; - list_for_each_entry(tgt, &vhost->targets, queue) { + list_for_each_entry(tgt, &vhost->scsi_scrqs.targets, queue) { if (tgt->add_rport) { did_work = 1; tgt->add_rport = 0; @@ -6341,7 +6341,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) shost->nr_hw_queues = mq_enabled ? min(max_scsi_queues, nr_scsi_hw_queues) : 1; vhost = shost_priv(shost); - INIT_LIST_HEAD(&vhost->targets); + INIT_LIST_HEAD(&vhost->scsi_scrqs.targets); INIT_LIST_HEAD(&vhost->purge); sprintf(vhost->name, IBMVFC_NAME); vhost->host = shost; diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h index c73ed2314ad0..0e259e9d2e9b 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.h +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -828,6 +828,8 @@ struct ibmvfc_channels { unsigned int active_queues; unsigned int desired_queues; unsigned int max_queues; + int num_targets; + struct list_head targets; int disc_buf_sz; struct ibmvfc_discover_targets_entry *disc_buf; dma_addr_t disc_buf_dma; @@ -871,8 +873,6 @@ struct ibmvfc_host { #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) struct ibmvfc_trace_entry *trace; atomic_t trace_index; - int num_targets; - struct list_head targets; struct list_head purge; struct device *dev; struct dma_pool *sg_pool; -- 2.54.0