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target: simplify alua support

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We always support ALUA for virtual backends, and never for physical ones.  Simplify
the code to just deal with these two cases and remove the superflous abstractions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2012-10-10 17:37:16 -04:00 • committed by Nicholas Bellinger
parent d977f4377f
commit c87fbd5656
7 changed files with 65 additions and 166 deletions
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12
drivers/target/target_core_spc.c
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@ -95,8 +95,7 @@ static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf)
/*
* Enable SCCS and TPGS fields for Emulated ALUA
*/
if (dev->t10_alua.alua_type == SPC3_ALUA_EMULATED)
spc_fill_alua_data(lun->lun_sep, buf);
spc_fill_alua_data(lun->lun_sep, buf);
buf[7] = 0x2; /* CmdQue=1 */
@ -294,9 +293,6 @@ check_t10_vend_desc:
* Get the PROTOCOL IDENTIFIER as defined by spc4r17
* section 7.5.1 Table 362
*/
if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED)
goto check_scsi_name;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
if (!tg_pt_gp_mem)
goto check_lu_gp;
@ -1083,8 +1079,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* MAINTENANCE_IN from SCC-2
* Check for emulated MI_REPORT_TARGET_PGS
*/
if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS &&
dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) {
cmd->execute_cmd =
target_emulate_report_target_port_groups;
}
@ -1102,8 +1097,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* MAINTENANCE_OUT from SCC-2
* Check for emulated MO_SET_TARGET_PGS.
*/
if (cdb[1] == MO_SET_TARGET_PGS &&
dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
if (cdb[1] == MO_SET_TARGET_PGS) {
cmd->execute_cmd =
target_emulate_set_target_port_groups;
}