scsi: mpt3sas: Implement device_remove_in_progress check in IOCTL path

When device missing event arrives, device_remove_in_progress bit will be
set and hence driver has to stop sending IOCTL commands.Now the check has
been added in IOCTL path to test device_remove_in_progress bit is set, if
so then IOCTL will be failed printing failure message.

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 4ea81e1..9ad7f7c 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -5334,6 +5334,21 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
                goto out_free_resources;
        }
 
+       /* allocate memory for pending OS device add list */
+       ioc->pend_os_device_add_sz = (ioc->facts.MaxDevHandle / 8);
+       if (ioc->facts.MaxDevHandle % 8)
+               ioc->pend_os_device_add_sz++;
+       ioc->pend_os_device_add = kzalloc(ioc->pend_os_device_add_sz,
+           GFP_KERNEL);
+       if (!ioc->pend_os_device_add)
+               goto out_free_resources;
+
+       ioc->device_remove_in_progress_sz = ioc->pend_os_device_add_sz;
+       ioc->device_remove_in_progress =
+               kzalloc(ioc->device_remove_in_progress_sz, GFP_KERNEL);
+       if (!ioc->device_remove_in_progress)
+               goto out_free_resources;
+
        ioc->fwfault_debug = mpt3sas_fwfault_debug;
 
        /* base internal command bits */
@@ -5416,6 +5431,8 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
                kfree(ioc->reply_post_host_index);
        kfree(ioc->pd_handles);
        kfree(ioc->blocking_handles);
+       kfree(ioc->device_remove_in_progress);
+       kfree(ioc->pend_os_device_add);
        kfree(ioc->tm_cmds.reply);
        kfree(ioc->transport_cmds.reply);
        kfree(ioc->scsih_cmds.reply);
@@ -5457,6 +5474,8 @@ mpt3sas_base_detach(struct MPT3SAS_ADAPTER *ioc)
                kfree(ioc->reply_post_host_index);
        kfree(ioc->pd_handles);
        kfree(ioc->blocking_handles);
+       kfree(ioc->device_remove_in_progress);
+       kfree(ioc->pend_os_device_add);
        kfree(ioc->pfacts);
        kfree(ioc->ctl_cmds.reply);
        kfree(ioc->ctl_cmds.sense);

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 3e71bc1..4221a4d 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -1079,6 +1079,9 @@ struct MPT3SAS_ADAPTER {
        void            *pd_handles;
        u16             pd_handles_sz;
 
+       void            *pend_os_device_add;
+       u16             pend_os_device_add_sz;
+
        /* config page */
        u16             config_page_sz;
        void            *config_page;
@@ -1187,6 +1190,8 @@ struct MPT3SAS_ADAPTER {
        struct SL_WH_EVENT_TRIGGERS_T diag_trigger_event;
        struct SL_WH_SCSI_TRIGGERS_T diag_trigger_scsi;
        struct SL_WH_MPI_TRIGGERS_T diag_trigger_mpi;
+       void            *device_remove_in_progress;
+       u16             device_remove_in_progress_sz;
 };
 
 typedef u8 (*MPT_CALLBACK)(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,

diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
index 26cdc12..de720c9 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -654,6 +654,7 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
        size_t data_in_sz = 0;
        long ret;
        u16 wait_state_count;
+       u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
 
        issue_reset = 0;
 
@@ -738,10 +739,13 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
        data_in_sz = karg.data_in_size;
 
        if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
-           mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
-               if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
-                   le16_to_cpu(mpi_request->FunctionDependent1) >
-                   ioc->facts.MaxDevHandle) {
+           mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
+           mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
+           mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH) {
+
+               device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
+               if (!device_handle || (device_handle >
+                   ioc->facts.MaxDevHandle)) {
                        ret = -EINVAL;
                        mpt3sas_base_free_smid(ioc, smid);
                        goto out;
@@ -797,12 +801,18 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
                scsiio_request->SenseBufferLowAddress =
                    mpt3sas_base_get_sense_buffer_dma(ioc, smid);
                memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
+               if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+                       dtmprintk(ioc, pr_info(MPT3SAS_FMT
+                               "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+                               ioc->name, device_handle));
+                       mpt3sas_base_free_smid(ioc, smid);
+                       ret = -EINVAL;
+                       goto out;
+               }
                ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
                    data_in_dma, data_in_sz);
-
                if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
-                       mpt3sas_base_put_smid_scsi_io(ioc, smid,
-                           le16_to_cpu(mpi_request->FunctionDependent1));
+                       mpt3sas_base_put_smid_scsi_io(ioc, smid, device_handle);
                else
                        mpt3sas_base_put_smid_default(ioc, smid);
                break;
@@ -827,6 +837,14 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
                        }
                }
 
+               if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+                       dtmprintk(ioc, pr_info(MPT3SAS_FMT
+                               "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+                               ioc->name, device_handle));
+                       mpt3sas_base_free_smid(ioc, smid);
+                       ret = -EINVAL;
+                       goto out;
+               }
                mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
                    tm_request->DevHandle));
                ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
@@ -866,6 +884,20 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
                break;
        }
        case MPI2_FUNCTION_SATA_PASSTHROUGH:
+       {
+               if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+                       dtmprintk(ioc, pr_info(MPT3SAS_FMT
+                               "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+                               ioc->name, device_handle));
+                       mpt3sas_base_free_smid(ioc, smid);
+                       ret = -EINVAL;
+                       goto out;
+               }
+               ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
+                   data_in_sz);
+               mpt3sas_base_put_smid_default(ioc, smid);
+               break;
+       }
        case MPI2_FUNCTION_FW_DOWNLOAD:
        case MPI2_FUNCTION_FW_UPLOAD:
        {

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 282ca40..9584d6b 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -788,6 +788,11 @@ _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
        list_add_tail(&sas_device->list, &ioc->sas_device_list);
        spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 
+       if (ioc->hide_drives) {
+               clear_bit(sas_device->handle, ioc->pend_os_device_add);
+               return;
+       }
+
        if (!mpt3sas_transport_port_add(ioc, sas_device->handle,
             sas_device->sas_address_parent)) {
                _scsih_sas_device_remove(ioc, sas_device);
@@ -803,7 +808,8 @@ _scsih_sas_device_add(struct MPT3SAS_ADAPTER *ioc,
                            sas_device->sas_address_parent);
                        _scsih_sas_device_remove(ioc, sas_device);
                }
-       }
+       } else
+               clear_bit(sas_device->handle, ioc->pend_os_device_add);
 }
 
 /**
@@ -3138,6 +3144,8 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
        if (test_bit(handle, ioc->pd_handles))
                return;
 
+       clear_bit(handle, ioc->pend_os_device_add);
+
        spin_lock_irqsave(&ioc->sas_device_lock, flags);
        sas_device = __mpt3sas_get_sdev_by_handle(ioc, handle);
        if (sas_device && sas_device->starget &&
@@ -3192,6 +3200,7 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
        mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
        mpi_request->DevHandle = cpu_to_le16(handle);
        mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
+       set_bit(handle, ioc->device_remove_in_progress);
        mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
        mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
 
@@ -3326,6 +3335,11 @@ _scsih_sas_control_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid,
                ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
                le16_to_cpu(mpi_reply->IOCStatus),
                le32_to_cpu(mpi_reply->IOCLogInfo)));
+               if (le16_to_cpu(mpi_reply->IOCStatus) ==
+                    MPI2_IOCSTATUS_SUCCESS) {
+                       clear_bit(le16_to_cpu(mpi_reply->DevHandle),
+                           ioc->device_remove_in_progress);
+               }
        } else {
                pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
                    ioc->name, __FILE__, __LINE__, __func__);
@@ -5449,6 +5463,7 @@ _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
        device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
        if (!(_scsih_is_end_device(device_info)))
                return -1;
+       set_bit(handle, ioc->pend_os_device_add);
        sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
 
        /* check if device is present */
@@ -5467,6 +5482,7 @@ _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
        sas_device = mpt3sas_get_sdev_by_addr(ioc,
                                        sas_address);
        if (sas_device) {
+               clear_bit(handle, ioc->pend_os_device_add);
                sas_device_put(sas_device);
                return -1;
        }
@@ -5790,6 +5806,9 @@ _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
                        _scsih_check_device(ioc, sas_address, handle,
                            phy_number, link_rate);
 
+                       if (!test_bit(handle, ioc->pend_os_device_add))
+                               break;
+
 
                case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
 
@@ -7707,6 +7726,9 @@ mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
                        complete(&ioc->tm_cmds.done);
                }
 
+               memset(ioc->pend_os_device_add, 0, ioc->pend_os_device_add_sz);
+               memset(ioc->device_remove_in_progress, 0,
+                      ioc->device_remove_in_progress_sz);
                _scsih_fw_event_cleanup_queue(ioc);
                _scsih_flush_running_cmds(ioc);
                break;