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path: root/drivers/target/target_core_cdb.c
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Diffstat (limited to 'drivers/target/target_core_cdb.c')
-rw-r--r--drivers/target/target_core_cdb.c118
1 files changed, 26 insertions, 92 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 30a67707036f..9888693a18fe 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -432,6 +432,7 @@ static int
target_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
+ u32 max_sectors;
int have_tp = 0;
/*
@@ -456,7 +457,9 @@ target_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
/*
* Set MAXIMUM TRANSFER LENGTH
*/
- put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.fabric_max_sectors, &buf[8]);
+ max_sectors = min(dev->se_sub_dev->se_dev_attrib.fabric_max_sectors,
+ dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
+ put_unaligned_be32(max_sectors, &buf[8]);
/*
* Set OPTIMAL TRANSFER LENGTH
@@ -598,9 +601,8 @@ target_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
return 0;
}
-int target_emulate_inquiry(struct se_task *task)
+int target_emulate_inquiry(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg;
unsigned char *buf, *map_buf;
@@ -664,16 +666,13 @@ out:
}
transport_kunmap_data_sg(cmd);
- if (!ret) {
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
- }
+ if (!ret)
+ target_complete_cmd(cmd, GOOD);
return ret;
}
-int target_emulate_readcapacity(struct se_task *task)
+int target_emulate_readcapacity(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
unsigned char *buf;
unsigned long long blocks_long = dev->transport->get_blocks(dev);
@@ -697,14 +696,12 @@ int target_emulate_readcapacity(struct se_task *task)
transport_kunmap_data_sg(cmd);
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
-int target_emulate_readcapacity_16(struct se_task *task)
+int target_emulate_readcapacity_16(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
unsigned char *buf;
unsigned long long blocks = dev->transport->get_blocks(dev);
@@ -732,8 +729,7 @@ int target_emulate_readcapacity_16(struct se_task *task)
transport_kunmap_data_sg(cmd);
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
@@ -872,9 +868,8 @@ target_modesense_dpofua(unsigned char *buf, int type)
}
}
-int target_emulate_modesense(struct se_task *task)
+int target_emulate_modesense(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
char *cdb = cmd->t_task_cdb;
unsigned char *rbuf;
@@ -947,14 +942,12 @@ int target_emulate_modesense(struct se_task *task)
memcpy(rbuf, buf, offset);
transport_kunmap_data_sg(cmd);
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
-int target_emulate_request_sense(struct se_task *task)
+int target_emulate_request_sense(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
unsigned char *cdb = cmd->t_task_cdb;
unsigned char *buf;
u8 ua_asc = 0, ua_ascq = 0;
@@ -1008,8 +1001,7 @@ int target_emulate_request_sense(struct se_task *task)
end:
transport_kunmap_data_sg(cmd);
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
@@ -1017,9 +1009,8 @@ end:
* Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
* Note this is not used for TCM/pSCSI passthrough
*/
-int target_emulate_unmap(struct se_task *task)
+int target_emulate_unmap(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
unsigned char *buf, *ptr = NULL;
unsigned char *cdb = &cmd->t_task_cdb[0];
@@ -1066,10 +1057,8 @@ int target_emulate_unmap(struct se_task *task)
err:
transport_kunmap_data_sg(cmd);
- if (!ret) {
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
- }
+ if (!ret)
+ target_complete_cmd(cmd, GOOD);
return ret;
}
@@ -1077,9 +1066,8 @@ err:
* Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
* Note this is not used for TCM/pSCSI passthrough
*/
-int target_emulate_write_same(struct se_task *task)
+int target_emulate_write_same(struct se_cmd *cmd)
{
- struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
sector_t range;
sector_t lba = cmd->t_task_lba;
@@ -1118,79 +1106,25 @@ int target_emulate_write_same(struct se_task *task)
return ret;
}
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
-int target_emulate_synchronize_cache(struct se_task *task)
+int target_emulate_synchronize_cache(struct se_cmd *cmd)
{
- struct se_device *dev = task->task_se_cmd->se_dev;
- struct se_cmd *cmd = task->task_se_cmd;
-
- if (!dev->transport->do_sync_cache) {
+ if (!cmd->se_dev->transport->do_sync_cache) {
pr_err("SYNCHRONIZE_CACHE emulation not supported"
- " for: %s\n", dev->transport->name);
+ " for: %s\n", cmd->se_dev->transport->name);
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
return -ENOSYS;
}
- dev->transport->do_sync_cache(task);
+ cmd->se_dev->transport->do_sync_cache(cmd);
return 0;
}
-int target_emulate_noop(struct se_task *task)
+int target_emulate_noop(struct se_cmd *cmd)
{
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
+ target_complete_cmd(cmd, GOOD);
return 0;
}
-
-/*
- * Write a CDB into @cdb that is based on the one the intiator sent us,
- * but updated to only cover the sectors that the current task handles.
- */
-void target_get_task_cdb(struct se_task *task, unsigned char *cdb)
-{
- struct se_cmd *cmd = task->task_se_cmd;
- unsigned int cdb_len = scsi_command_size(cmd->t_task_cdb);
-
- memcpy(cdb, cmd->t_task_cdb, cdb_len);
- if (cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) {
- unsigned long long lba = task->task_lba;
- u32 sectors = task->task_sectors;
-
- switch (cdb_len) {
- case 6:
- /* 21-bit LBA and 8-bit sectors */
- cdb[1] = (lba >> 16) & 0x1f;
- cdb[2] = (lba >> 8) & 0xff;
- cdb[3] = lba & 0xff;
- cdb[4] = sectors & 0xff;
- break;
- case 10:
- /* 32-bit LBA and 16-bit sectors */
- put_unaligned_be32(lba, &cdb[2]);
- put_unaligned_be16(sectors, &cdb[7]);
- break;
- case 12:
- /* 32-bit LBA and 32-bit sectors */
- put_unaligned_be32(lba, &cdb[2]);
- put_unaligned_be32(sectors, &cdb[6]);
- break;
- case 16:
- /* 64-bit LBA and 32-bit sectors */
- put_unaligned_be64(lba, &cdb[2]);
- put_unaligned_be32(sectors, &cdb[10]);
- break;
- case 32:
- /* 64-bit LBA and 32-bit sectors, extended CDB */
- put_unaligned_be64(lba, &cdb[12]);
- put_unaligned_be32(sectors, &cdb[28]);
- break;
- default:
- BUG();
- }
- }
-}
-EXPORT_SYMBOL(target_get_task_cdb);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.