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target: move transport ID handling to the core

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Now that struct se_portal_group contains a protocol identifier field we can
take all the code to format an parse protocol identifiers in CDBs into common
code instead of leaving this to low-level drivers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2015-05-01 17:47:58 +02:00
committed by Nicholas Bellinger
parent 2aeeafae6b
commit 2650d71e24
18 changed files with 173 additions and 875 deletions
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70
drivers/target/sbp/sbp_target.c
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@@ -1832,73 +1832,6 @@ static int sbp_check_stop_free(struct se_cmd *se_cmd)
return 1;
}
static u32 sbp_get_pr_transport_id(
struct se_portal_group *se_tpg,
struct se_node_acl *se_nacl,
struct t10_pr_registration *pr_reg,
int *format_code,
unsigned char *buf)
{
int ret;
/*
* Set PROTOCOL IDENTIFIER to 3h for SBP
*/
buf[0] = SCSI_PROTOCOL_SBP;
/*
* From spc4r17, 7.5.4.4 TransportID for initiator ports using SCSI
* over IEEE 1394
*/
ret = hex2bin(&buf[8], se_nacl->initiatorname, 8);
if (ret < 0)
pr_debug("sbp transport_id: invalid hex string\n");
/*
* The IEEE 1394 Transport ID is a hardcoded 24-byte length
*/
return 24;
}
static u32 sbp_get_pr_transport_id_len(
struct se_portal_group *se_tpg,
struct se_node_acl *se_nacl,
struct t10_pr_registration *pr_reg,
int *format_code)
{
*format_code = 0;
/*
* From spc4r17, 7.5.4.4 TransportID for initiator ports using SCSI
* over IEEE 1394
*
* The SBP Transport ID is a hardcoded 24-byte length
*/
return 24;
}
/*
* Used for handling SCSI fabric dependent TransportIDs in SPC-3 and above
* Persistent Reservation SPEC_I_PT=1 and PROUT REGISTER_AND_MOVE operations.
*/
static char *sbp_parse_pr_out_transport_id(
struct se_portal_group *se_tpg,
const char *buf,
u32 *out_tid_len,
char **port_nexus_ptr)
{
/*
* Assume the FORMAT CODE 00b from spc4r17, 7.5.4.4 TransportID
* for initiator ports using SCSI over SBP Serial SCSI Protocol
*
* The TransportID for a IEEE 1394 Initiator Port is of fixed size of
* 24 bytes, and IEEE 1394 does not contain a I_T nexus identifier,
* so we return the **port_nexus_ptr set to NULL.
*/
*port_nexus_ptr = NULL;
*out_tid_len = 24;
return (char *)&buf[8];
}
static int sbp_count_se_tpg_luns(struct se_portal_group *tpg)
{
int i, count = 0;
@@ -2432,9 +2365,6 @@ static const struct target_core_fabric_ops sbp_ops = {
.get_fabric_name = sbp_get_fabric_name,
.tpg_get_wwn = sbp_get_fabric_wwn,
.tpg_get_tag = sbp_get_tag,
.tpg_get_pr_transport_id = sbp_get_pr_transport_id,
.tpg_get_pr_transport_id_len = sbp_get_pr_transport_id_len,
.tpg_parse_pr_out_transport_id = sbp_parse_pr_out_transport_id,
.tpg_check_demo_mode = sbp_check_true,
.tpg_check_demo_mode_cache = sbp_check_true,
.tpg_check_demo_mode_write_protect = sbp_check_false,