From a91aaae0243b419e52e97990471208321222be33 Mon Sep 17 00:00:00 2001 From: Ajish Koshy Date: Fri, 7 Dec 2018 16:29:31 -0600 Subject: [PATCH] scsi: smartpqi: allow for larger raid maps Reviewed-by: Murthy Bhat Reviewed-by: Mahesh Rajashekhara Reviewed-by: Dave Carroll Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Signed-off-by: Ajish Koshy Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen --- drivers/scsi/smartpqi/smartpqi_init.c | 63 +++++++++++++-------------- 1 file changed, 30 insertions(+), 33 deletions(-) diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 8c848e136d33..d6fb49496796 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -1115,8 +1115,6 @@ static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, char *err_msg; u32 raid_map_size; u32 r5or6_blocks_per_row; - unsigned int num_phys_disks; - unsigned int num_raid_map_entries; raid_map_size = get_unaligned_le32(&raid_map->structure_size); @@ -1125,22 +1123,6 @@ static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, goto bad_raid_map; } - if (raid_map_size > sizeof(*raid_map)) { - err_msg = "RAID map too large"; - goto bad_raid_map; - } - - num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) * - (get_unaligned_le16(&raid_map->data_disks_per_row) + - get_unaligned_le16(&raid_map->metadata_disks_per_row)); - num_raid_map_entries = num_phys_disks * - get_unaligned_le16(&raid_map->row_cnt); - - if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) { - err_msg = "invalid number of map entries in RAID map"; - goto bad_raid_map; - } - if (device->raid_level == SA_RAID_1) { if (get_unaligned_le16(&raid_map->layout_map_count) != 2) { err_msg = "invalid RAID-1 map"; @@ -1179,28 +1161,46 @@ static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device) { int rc; - enum dma_data_direction dir; - struct pqi_raid_path_request request; + u32 raid_map_size; struct raid_map *raid_map; raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL); if (!raid_map) return -ENOMEM; - rc = pqi_build_raid_path_request(ctrl_info, &request, - CISS_GET_RAID_MAP, device->scsi3addr, raid_map, - sizeof(*raid_map), 0, &dir); - if (rc) - goto error; - - rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, - NULL, NO_TIMEOUT); - - pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); + rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, + device->scsi3addr, raid_map, sizeof(*raid_map), + 0, NULL, NO_TIMEOUT); if (rc) goto error; + raid_map_size = get_unaligned_le32(&raid_map->structure_size); + + if (raid_map_size > sizeof(*raid_map)) { + + kfree(raid_map); + + raid_map = kmalloc(raid_map_size, GFP_KERNEL); + if (!raid_map) + return -ENOMEM; + + rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, + device->scsi3addr, raid_map, raid_map_size, + 0, NULL, NO_TIMEOUT); + if (rc) + goto error; + + if (get_unaligned_le32(&raid_map->structure_size) + != raid_map_size) { + dev_warn(&ctrl_info->pci_dev->dev, + "Requested %d bytes, received %d bytes", + raid_map_size, + get_unaligned_le32(&raid_map->structure_size)); + goto error; + } + } + rc = pqi_validate_raid_map(ctrl_info, device, raid_map); if (rc) goto error; @@ -2459,9 +2459,6 @@ static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, (map_row * total_disks_per_row) + first_column; } - if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES)) - return PQI_RAID_BYPASS_INELIGIBLE; - aio_handle = raid_map->disk_data[map_index].aio_handle; disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) + first_row * strip_size +