diff options
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 443 |
1 files changed, 436 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 6eebd0bbe8a..213123b0486 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -40,6 +40,9 @@ #include <linux/moduleparam.h> #include <linux/scatterlist.h> #include <linux/blkdev.h> +#include <linux/crc-t10dif.h> + +#include <net/checksum.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -48,8 +51,7 @@ #include <scsi/scsicam.h> #include <scsi/scsi_eh.h> -#include <linux/stat.h> - +#include "sd.h" #include "scsi_logging.h" #define SCSI_DEBUG_VERSION "1.81" @@ -95,6 +97,10 @@ static const char * scsi_debug_version_date = "20070104"; #define DEF_FAKE_RW 0 #define DEF_VPD_USE_HOSTNO 1 #define DEF_SECTOR_SIZE 512 +#define DEF_DIX 0 +#define DEF_DIF 0 +#define DEF_GUARD 0 +#define DEF_ATO 1 /* bit mask values for scsi_debug_opts */ #define SCSI_DEBUG_OPT_NOISE 1 @@ -102,6 +108,8 @@ static const char * scsi_debug_version_date = "20070104"; #define SCSI_DEBUG_OPT_TIMEOUT 4 #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 +#define SCSI_DEBUG_OPT_DIF_ERR 32 +#define SCSI_DEBUG_OPT_DIX_ERR 64 /* When "every_nth" > 0 then modulo "every_nth" commands: * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write @@ -144,6 +152,10 @@ static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; static int scsi_debug_fake_rw = DEF_FAKE_RW; static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; static int scsi_debug_sector_size = DEF_SECTOR_SIZE; +static int scsi_debug_dix = DEF_DIX; +static int scsi_debug_dif = DEF_DIF; +static int scsi_debug_guard = DEF_GUARD; +static int scsi_debug_ato = DEF_ATO; static int scsi_debug_cmnd_count = 0; @@ -204,11 +216,15 @@ struct sdebug_queued_cmd { static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; static unsigned char * fake_storep; /* ramdisk storage */ +static unsigned char *dif_storep; /* protection info */ static int num_aborts = 0; static int num_dev_resets = 0; static int num_bus_resets = 0; static int num_host_resets = 0; +static int dix_writes; +static int dix_reads; +static int dif_errors; static DEFINE_SPINLOCK(queued_arr_lock); static DEFINE_RWLOCK(atomic_rw); @@ -217,6 +233,11 @@ static char sdebug_proc_name[] = "scsi_debug"; static struct bus_type pseudo_lld_bus; +static inline sector_t dif_offset(sector_t sector) +{ + return sector << 3; +} + static struct device_driver sdebug_driverfs_driver = { .name = sdebug_proc_name, .bus = &pseudo_lld_bus, @@ -225,6 +246,9 @@ static struct device_driver sdebug_driverfs_driver = { static const int check_condition_result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; +static const int illegal_condition_result = + (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; + static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, 0, 0, 0x2, 0x4b}; static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, @@ -726,7 +750,12 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, } else if (0x86 == cmd[2]) { /* extended inquiry */ arr[1] = cmd[2]; /*sanity */ arr[3] = 0x3c; /* number of following entries */ - arr[4] = 0x0; /* no protection stuff */ + if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) + arr[4] = 0x4; /* SPT: GRD_CHK:1 */ + else if (scsi_debug_dif) + arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ + else + arr[4] = 0x0; /* no protection stuff */ arr[5] = 0x7; /* head of q, ordered + simple q's */ } else if (0x87 == cmd[2]) { /* mode page policy */ arr[1] = cmd[2]; /*sanity */ @@ -767,6 +796,7 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, arr[2] = scsi_debug_scsi_level; arr[3] = 2; /* response_data_format==2 */ arr[4] = SDEBUG_LONG_INQ_SZ - 5; + arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ if (0 == scsi_debug_vpd_use_hostno) arr[5] = 0x10; /* claim: implicit TGPS */ arr[6] = 0x10; /* claim: MultiP */ @@ -915,6 +945,12 @@ static int resp_readcap16(struct scsi_cmnd * scp, arr[9] = (scsi_debug_sector_size >> 16) & 0xff; arr[10] = (scsi_debug_sector_size >> 8) & 0xff; arr[11] = scsi_debug_sector_size & 0xff; + + if (scsi_debug_dif) { + arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ + arr[12] |= 1; /* PROT_EN */ + } + return fill_from_dev_buffer(scp, arr, min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); } @@ -1066,6 +1102,10 @@ static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) ctrl_m_pg[2] |= 0x4; else ctrl_m_pg[2] &= ~0x4; + + if (scsi_debug_ato) + ctrl_m_pg[5] |= 0x80; /* ATO=1 */ + memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); if (1 == pcontrol) memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); @@ -1536,6 +1576,87 @@ static int do_device_access(struct scsi_cmnd *scmd, return ret; } +static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, + unsigned int sectors) +{ + unsigned int i, resid; + struct scatterlist *psgl; + struct sd_dif_tuple *sdt; + sector_t sector; + sector_t tmp_sec = start_sec; + void *paddr; + + start_sec = do_div(tmp_sec, sdebug_store_sectors); + + sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec)); + + for (i = 0 ; i < sectors ; i++) { + u16 csum; + + if (sdt[i].app_tag == 0xffff) + continue; + + sector = start_sec + i; + + switch (scsi_debug_guard) { + case 1: + csum = ip_compute_csum(fake_storep + + sector * scsi_debug_sector_size, + scsi_debug_sector_size); + break; + case 0: + csum = crc_t10dif(fake_storep + + sector * scsi_debug_sector_size, + scsi_debug_sector_size); + csum = cpu_to_be16(csum); + break; + default: + BUG(); + } + + if (sdt[i].guard_tag != csum) { + printk(KERN_ERR "%s: GUARD check failed on sector %lu" \ + " rcvd 0x%04x, data 0x%04x\n", __func__, + (unsigned long)sector, + be16_to_cpu(sdt[i].guard_tag), + be16_to_cpu(csum)); + dif_errors++; + return 0x01; + } + + if (scsi_debug_dif != SD_DIF_TYPE3_PROTECTION && + be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) { + printk(KERN_ERR "%s: REF check failed on sector %lu\n", + __func__, (unsigned long)sector); + dif_errors++; + return 0x03; + } + } + + resid = sectors * 8; /* Bytes of protection data to copy into sgl */ + sector = start_sec; + + scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { + int len = min(psgl->length, resid); + + paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; + memcpy(paddr, dif_storep + dif_offset(sector), len); + + sector += len >> 3; + if (sector >= sdebug_store_sectors) { + /* Force wrap */ + tmp_sec = sector; + sector = do_div(tmp_sec, sdebug_store_sectors); + } + resid -= len; + kunmap_atomic(paddr, KM_IRQ0); + } + + dix_reads++; + + return 0; +} + static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, unsigned int num, struct sdebug_dev_info *devip) { @@ -1563,12 +1684,162 @@ static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, } return check_condition_result; } + + /* DIX + T10 DIF */ + if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { + int prot_ret = prot_verify_read(SCpnt, lba, num); + + if (prot_ret) { + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); + return illegal_condition_result; + } + } + read_lock_irqsave(&atomic_rw, iflags); ret = do_device_access(SCpnt, devip, lba, num, 0); read_unlock_irqrestore(&atomic_rw, iflags); return ret; } +void dump_sector(unsigned char *buf, int len) +{ + int i, j; + + printk(KERN_ERR ">>> Sector Dump <<<\n"); + + for (i = 0 ; i < len ; i += 16) { + printk(KERN_ERR "%04d: ", i); + + for (j = 0 ; j < 16 ; j++) { + unsigned char c = buf[i+j]; + if (c >= 0x20 && c < 0x7e) + printk(" %c ", buf[i+j]); + else + printk("%02x ", buf[i+j]); + } + + printk("\n"); + } +} + +static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, + unsigned int sectors) +{ + int i, j, ret; + struct sd_dif_tuple *sdt; + struct scatterlist *dsgl = scsi_sglist(SCpnt); + struct scatterlist *psgl = scsi_prot_sglist(SCpnt); + void *daddr, *paddr; + sector_t tmp_sec = start_sec; + sector_t sector; + int ppage_offset; + unsigned short csum; + + sector = do_div(tmp_sec, sdebug_store_sectors); + + if (((SCpnt->cmnd[1] >> 5) & 7) != 1) { + printk(KERN_WARNING "scsi_debug: WRPROTECT != 1\n"); + return 0; + } + + BUG_ON(scsi_sg_count(SCpnt) == 0); + BUG_ON(scsi_prot_sg_count(SCpnt) == 0); + + paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; + ppage_offset = 0; + + /* For each data page */ + scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { + daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; + + /* For each sector-sized chunk in data page */ + for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { + + /* If we're at the end of the current + * protection page advance to the next one + */ + if (ppage_offset >= psgl->length) { + kunmap_atomic(paddr, KM_IRQ1); + psgl = sg_next(psgl); + BUG_ON(psgl == NULL); + paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + + psgl->offset; + ppage_offset = 0; + } + + sdt = paddr + ppage_offset; + + switch (scsi_debug_guard) { + case 1: + csum = ip_compute_csum(daddr, + scsi_debug_sector_size); + break; + case 0: + csum = cpu_to_be16(crc_t10dif(daddr, + scsi_debug_sector_size)); + break; + default: + BUG(); + ret = 0; + goto out; + } + + if (sdt->guard_tag != csum) { + printk(KERN_ERR + "%s: GUARD check failed on sector %lu " \ + "rcvd 0x%04x, calculated 0x%04x\n", + __func__, (unsigned long)sector, + be16_to_cpu(sdt->guard_tag), + be16_to_cpu(csum)); + ret = 0x01; + dump_sector(daddr, scsi_debug_sector_size); + goto out; + } + + if (scsi_debug_dif != SD_DIF_TYPE3_PROTECTION && + be32_to_cpu(sdt->ref_tag) + != (start_sec & 0xffffffff)) { + printk(KERN_ERR + "%s: REF check failed on sector %lu\n", + __func__, (unsigned long)sector); + ret = 0x03; + dump_sector(daddr, scsi_debug_sector_size); + goto out; + } + + /* Would be great to copy this in bigger + * chunks. However, for the sake of + * correctness we need to verify each sector + * before writing it to "stable" storage + */ + memcpy(dif_storep + dif_offset(sector), sdt, 8); + + sector++; + + if (sector == sdebug_store_sectors) + sector = 0; /* Force wrap */ + + start_sec++; + daddr += scsi_debug_sector_size; + ppage_offset += sizeof(struct sd_dif_tuple); + } + + kunmap_atomic(daddr, KM_IRQ0); + } + + kunmap_atomic(paddr, KM_IRQ1); + + dix_writes++; + + return 0; + +out: + dif_errors++; + kunmap_atomic(daddr, KM_IRQ0); + kunmap_atomic(paddr, KM_IRQ1); + return ret; +} + static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, unsigned int num, struct sdebug_dev_info *devip) { @@ -1579,6 +1850,16 @@ static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, if (ret) return ret; + /* DIX + T10 DIF */ + if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { + int prot_ret = prot_verify_write(SCpnt, lba, num); + + if (prot_ret) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); + return illegal_condition_result; + } + } + write_lock_irqsave(&atomic_rw, iflags); ret = do_device_access(SCpnt, devip, lba, num, 1); write_unlock_irqrestore(&atomic_rw, iflags); @@ -2095,6 +2376,10 @@ module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, S_IRUGO | S_IWUSR); module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); +module_param_named(dix, scsi_debug_dix, int, S_IRUGO); +module_param_named(dif, scsi_debug_dif, int, S_IRUGO); +module_param_named(guard, scsi_debug_guard, int, S_IRUGO); +module_param_named(ato, scsi_debug_ato, int, S_IRUGO); MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); MODULE_DESCRIPTION("SCSI debug adapter driver"); @@ -2117,7 +2402,10 @@ MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); MODULE_PARM_DESC(sector_size, "hardware sector size in bytes (def=512)"); - +MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); +MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); +MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); +MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); static char sdebug_info[256]; @@ -2164,14 +2452,14 @@ static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **sta "delay=%d, max_luns=%d, scsi_level=%d\n" "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" "number of aborts=%d, device_reset=%d, bus_resets=%d, " - "host_resets=%d\n", + "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n", SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, scsi_debug_cmnd_count, scsi_debug_delay, scsi_debug_max_luns, scsi_debug_scsi_level, scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, - num_host_resets); + num_host_resets, dix_reads, dix_writes, dif_errors); if (pos < offset) { len = 0; begin = pos; @@ -2452,6 +2740,31 @@ static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf) } DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL); +static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); +} +DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL); + +static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); +} +DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL); + +static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard); +} +DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL); + +static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); +} +DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL); + + /* Note: The following function creates attribute files in the /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these files (over those found in the /sys/module/scsi_debug/parameters @@ -2478,11 +2791,19 @@ static int do_create_driverfs_files(void) ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato); return ret; } static void do_remove_driverfs_files(void) { + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); @@ -2526,11 +2847,33 @@ static int __init scsi_debug_init(void) case 4096: break; default: - printk(KERN_ERR "scsi_debug_init: invalid sector_size %u\n", + printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", scsi_debug_sector_size); return -EINVAL; } + switch (scsi_debug_dif) { + + case SD_DIF_TYPE0_PROTECTION: + case SD_DIF_TYPE1_PROTECTION: + case SD_DIF_TYPE3_PROTECTION: + break; + + default: + printk(KERN_ERR "scsi_debug_init: dif must be 0, 1 or 3\n"); + return -EINVAL; + } + + if (scsi_debug_guard > 1) { + printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); + return -EINVAL; + } + + if (scsi_debug_ato > 1) { + printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); + return -EINVAL; + } + if (scsi_debug_dev_size_mb < 1) scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; @@ -2563,6 +2906,24 @@ static int __init scsi_debug_init(void) if (scsi_debug_num_parts > 0) sdebug_build_parts(fake_storep, sz); + if (scsi_debug_dif) { + int dif_size; + + dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); + dif_storep = vmalloc(dif_size); + + printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", + dif_size, dif_storep); + + if (dif_storep == NULL) { + printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); + ret = -ENOMEM; + goto free_vm; + } + + memset(dif_storep, 0xff, dif_size); + } + ret = device_register(&pseudo_primary); if (ret < 0) { printk(KERN_WARNING "scsi_debug: device_register error: %d\n", @@ -2615,6 +2976,8 @@ bus_unreg: dev_unreg: device_unregister(&pseudo_primary); free_vm: + if (dif_storep) + vfree(dif_storep); vfree(fake_storep); return ret; @@ -2632,6 +2995,9 @@ static void __exit scsi_debug_exit(void) bus_unregister(&pseudo_lld_bus); device_unregister(&pseudo_primary); + if (dif_storep) + vfree(dif_storep); + vfree(fake_storep); } @@ -2732,6 +3098,8 @@ int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) struct sdebug_dev_info *devip = NULL; int inj_recovered = 0; int inj_transport = 0; + int inj_dif = 0; + int inj_dix = 0; int delay_override = 0; scsi_set_resid(SCpnt, 0); @@ -2769,6 +3137,10 @@ int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) inj_recovered = 1; /* to reads and writes below */ else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) inj_transport = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) + inj_dif = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) + inj_dix = 1; /* to reads and writes below */ } if (devip->wlun) { @@ -2870,6 +3242,12 @@ int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) mk_sense_buffer(devip, ABORTED_COMMAND, TRANSPORT_PROBLEM, ACK_NAK_TO); errsts = check_condition_result; + } else if (inj_dif && (0 == errsts)) { + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); + errsts = illegal_condition_result; + } else if (inj_dix && (0 == errsts)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); + errsts = illegal_condition_result; } break; case REPORT_LUNS: /* mandatory, ignore unit attention */ @@ -2894,6 +3272,12 @@ int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) mk_sense_buffer(devip, RECOVERED_ERROR, THRESHOLD_EXCEEDED, 0); errsts = check_condition_result; + } else if (inj_dif && (0 == errsts)) { + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); + errsts = illegal_condition_result; + } else if (inj_dix && (0 == errsts)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); + errsts = illegal_condition_result; } break; case MODE_SENSE: @@ -2982,6 +3366,7 @@ static int sdebug_driver_probe(struct device * dev) int error = 0; struct sdebug_host_info *sdbg_host; struct Scsi_Host *hpnt; + int host_prot; sdbg_host = to_sdebug_host(dev); @@ -3000,6 +3385,50 @@ static int sdebug_driver_probe(struct device * dev) hpnt->max_id = scsi_debug_num_tgts; hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ + host_prot = 0; + + switch (scsi_debug_dif) { + + case SD_DIF_TYPE1_PROTECTION: + host_prot = SHOST_DIF_TYPE1_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE1_PROTECTION; + break; + + case SD_DIF_TYPE2_PROTECTION: + host_prot = SHOST_DIF_TYPE2_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE2_PROTECTION; + break; + + case SD_DIF_TYPE3_PROTECTION: + host_prot = SHOST_DIF_TYPE3_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE3_PROTECTION; + break; + + default: + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE0_PROTECTION; + break; + } + + scsi_host_set_prot(hpnt, host_prot); + + printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", + (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", + (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", + (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", + (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", + (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", + (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", + (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); + + if (scsi_debug_guard == 1) + scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); + else + scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); + error = scsi_add_host(hpnt, &sdbg_host->dev); if (error) { printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |