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authorChristoph Hellwig <hch@infradead.org>2012-10-10 17:37:15 -0400
committerNicholas Bellinger <nab@linux-iscsi.org>2012-11-06 20:55:45 -0800
commitd977f4377fbc396b888e12fdb3b13118b09ca7db (patch)
treef3de282b1df951ec599908e24590dbcbac5b9047 /include/target
parenttarget: kill dev->dev_task_attr_type (diff)
downloadlinux-dev-d977f4377fbc396b888e12fdb3b13118b09ca7db.tar.xz
linux-dev-d977f4377fbc396b888e12fdb3b13118b09ca7db.zip
target: simplify reservations code
We do not support host-level reservations for the pscsi backend, and all virtual backends are newere than SCSI-2, so just make the combined SPC-3 + SCSI-2 support the only supported variant and kill the switches for the different implementations, given that this code handles the no-op version just fine. (hch: Update DRF_SPC2_RESERVATIONS lock usage) Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/target')
-rw-r--r--include/target/target_core_base.h29
1 files changed, 0 insertions, 29 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 15af1307d064..892a93dec19c 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -93,8 +93,6 @@
*/
#define DA_EMULATE_TPWS 0
/* No Emulation for PSCSI by default */
-#define DA_EMULATE_RESERVATIONS 0
-/* No Emulation for PSCSI by default */
#define DA_EMULATE_ALUA 0
/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
#define DA_ENFORCE_PR_ISIDS 1
@@ -333,18 +331,6 @@ struct t10_wwn {
struct list_head t10_vpd_list;
};
-
-/*
- * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
- * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
- * mode
- */
-typedef enum {
- SPC_PASSTHROUGH,
- SPC2_RESERVATIONS,
- SPC3_PERSISTENT_RESERVATIONS
-} t10_reservations_index_t;
-
struct t10_pr_registration {
/* Used for fabrics that contain WWN+ISID */
#define PR_REG_ISID_LEN 16
@@ -386,18 +372,6 @@ struct t10_pr_registration {
struct list_head pr_reg_atp_mem_list;
};
-/*
- * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
- * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
- * core_setup_reservations()
- */
-struct t10_reservation_ops {
- int (*t10_reservation_check)(struct se_cmd *, u32 *);
- int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
- int (*t10_pr_register)(struct se_cmd *);
- int (*t10_pr_clear)(struct se_cmd *);
-};
-
struct t10_reservation {
/* Reservation effects all target ports */
int pr_all_tg_pt;
@@ -408,7 +382,6 @@ struct t10_reservation {
#define PR_APTPL_BUF_LEN 8192
u32 pr_aptpl_buf_len;
u32 pr_generation;
- t10_reservations_index_t res_type;
spinlock_t registration_lock;
spinlock_t aptpl_reg_lock;
/*
@@ -424,7 +397,6 @@ struct t10_reservation {
struct se_node_acl *pr_res_holder;
struct list_head registration_list;
struct list_head aptpl_reg_list;
- struct t10_reservation_ops pr_ops;
};
struct se_tmr_req {
@@ -633,7 +605,6 @@ struct se_dev_attrib {
int emulate_tas;
int emulate_tpu;
int emulate_tpws;
- int emulate_reservations;
int emulate_alua;
int enforce_pr_isids;
int is_nonrot;