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target: Move MAINTENANCE_[IN,OUT] from pscsi_parse_cdb -> spc_parse_cdb

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The MAINTENANCE_[IN,OUT] CDB parsing required for generic ALUA emulation
needs to be in spc_parse_cdb() to function for virtual TYPE_DISK exports,
instead of in backend pscsi_parse_cdb() code used only for passthrough ops.

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2012-05-30 14:09:10 -07:00
parent 3d6d72014f
commit eba2ca4505
1 changed files with 41 additions and 1 deletions
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42
drivers/target/target_core_spc.c
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@ -35,6 +35,7 @@
#include <target/target_core_fabric.h>
#include "target_core_internal.h"
#include "target_core_alua.h"
#include "target_core_pr.h"
#include "target_core_ua.h"
@ -940,7 +941,8 @@ static int spc_emulate_testunitready(struct se_cmd *cmd)
int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
{
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
unsigned char *cdb = cmd->t_task_cdb;
switch (cdb[0]) {
@ -1050,6 +1052,44 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
cmd->execute_cmd = spc_emulate_testunitready;
*size = 0;
break;
case MAINTENANCE_IN:
if (dev->transport->get_device_type(dev) != TYPE_ROM) {
/*
* MAINTENANCE_IN from SCC-2
* Check for emulated MI_REPORT_TARGET_PGS
*/
if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS &&
su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
cmd->execute_cmd =
target_emulate_report_target_port_groups;
}
*size = get_unaligned_be32(&cdb[6]);
} else {
/*
* GPCMD_SEND_KEY from multi media commands
*/
*size = get_unaligned_be16(&cdb[8]);
}
break;
case MAINTENANCE_OUT:
if (dev->transport->get_device_type(dev) != TYPE_ROM) {
/*
* MAINTENANCE_OUT from SCC-2
* Check for emulated MO_SET_TARGET_PGS.
*/
if (cdb[1] == MO_SET_TARGET_PGS &&
su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
cmd->execute_cmd =
target_emulate_set_target_port_groups;
}
*size = get_unaligned_be32(&cdb[6]);
} else {
/*
* GPCMD_SEND_KEY from multi media commands
*/
*size = get_unaligned_be16(&cdb[8]);
}
break;
default:
pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode"
" 0x%02x, sending CHECK_CONDITION.\n",