*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
return 0;
}
+static void
+target_parse_naa_6h_vendor_specific(struct se_device *dev, unsigned char *buf)
+{
+ unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0];
+ int cnt;
+ bool next = true;
+
+ /*
+ * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on
+ * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field
+ * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION
+ * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL
+ * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure
+ * per device uniqeness.
+ */
+ for (cnt = 0; *p && cnt < 13; p++) {
+ int val = hex_to_bin(*p);
+
+ if (val < 0)
+ continue;
+
+ if (next) {
+ next = false;
+ buf[cnt++] |= val;
+ } else {
+ next = true;
+ buf[cnt] = val << 4;
+ }
+ }
+}
+
/*
* Device identification VPD, for a complete list of
* DESIGNATOR TYPEs see spc4r17 Table 459.
* VENDOR_SPECIFIC_IDENTIFIER and
* VENDOR_SPECIFIC_IDENTIFIER_EXTENTION
*/
- buf[off++] |= hex_to_bin(dev->se_sub_dev->t10_wwn.unit_serial[0]);
- hex2bin(&buf[off], &dev->se_sub_dev->t10_wwn.unit_serial[1], 12);
+ target_parse_naa_6h_vendor_specific(dev, &buf[off]);
len = 20;
off = (len + 4);
return PYX_TRANSPORT_SENT_TO_TRANSPORT;
}
+
+/*
+ * 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);