aboutsummaryrefslogtreecommitdiff
path: root/include/scsi
diff options
context:
space:
mode:
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/iscsi_if.h93
-rw-r--r--include/scsi/iscsi_proto.h3
-rw-r--r--include/scsi/libiscsi.h107
-rw-r--r--include/scsi/scsi.h18
-rw-r--r--include/scsi/scsi_cmnd.h1
-rw-r--r--include/scsi/scsi_device.h22
-rw-r--r--include/scsi/scsi_dh.h69
-rw-r--r--include/scsi/scsi_transport_iscsi.h91
-rw-r--r--include/scsi/sd.h57
-rw-r--r--include/scsi/sg.h1
10 files changed, 261 insertions, 201 deletions
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index e19e5842316..16be12f1cbe 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -50,6 +50,7 @@ enum iscsi_uevent_e {
ISCSI_UEVENT_TGT_DSCVR = UEVENT_BASE + 15,
ISCSI_UEVENT_SET_HOST_PARAM = UEVENT_BASE + 16,
ISCSI_UEVENT_UNBIND_SESSION = UEVENT_BASE + 17,
+ ISCSI_UEVENT_CREATE_BOUND_SESSION = UEVENT_BASE + 18,
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
@@ -78,6 +79,12 @@ struct iscsi_uevent {
uint16_t cmds_max;
uint16_t queue_depth;
} c_session;
+ struct msg_create_bound_session {
+ uint64_t ep_handle;
+ uint32_t initial_cmdsn;
+ uint16_t cmds_max;
+ uint16_t queue_depth;
+ } c_bound_session;
struct msg_destroy_session {
uint32_t sid;
} d_session;
@@ -250,42 +257,49 @@ enum iscsi_param {
ISCSI_PARAM_PING_TMO,
ISCSI_PARAM_RECV_TMO,
+
+ ISCSI_PARAM_IFACE_NAME,
+ ISCSI_PARAM_ISID,
+ ISCSI_PARAM_INITIATOR_NAME,
/* must always be last */
ISCSI_PARAM_MAX,
};
-#define ISCSI_MAX_RECV_DLENGTH (1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
-#define ISCSI_MAX_XMIT_DLENGTH (1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
-#define ISCSI_HDRDGST_EN (1 << ISCSI_PARAM_HDRDGST_EN)
-#define ISCSI_DATADGST_EN (1 << ISCSI_PARAM_DATADGST_EN)
-#define ISCSI_INITIAL_R2T_EN (1 << ISCSI_PARAM_INITIAL_R2T_EN)
-#define ISCSI_MAX_R2T (1 << ISCSI_PARAM_MAX_R2T)
-#define ISCSI_IMM_DATA_EN (1 << ISCSI_PARAM_IMM_DATA_EN)
-#define ISCSI_FIRST_BURST (1 << ISCSI_PARAM_FIRST_BURST)
-#define ISCSI_MAX_BURST (1 << ISCSI_PARAM_MAX_BURST)
-#define ISCSI_PDU_INORDER_EN (1 << ISCSI_PARAM_PDU_INORDER_EN)
-#define ISCSI_DATASEQ_INORDER_EN (1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
-#define ISCSI_ERL (1 << ISCSI_PARAM_ERL)
-#define ISCSI_IFMARKER_EN (1 << ISCSI_PARAM_IFMARKER_EN)
-#define ISCSI_OFMARKER_EN (1 << ISCSI_PARAM_OFMARKER_EN)
-#define ISCSI_EXP_STATSN (1 << ISCSI_PARAM_EXP_STATSN)
-#define ISCSI_TARGET_NAME (1 << ISCSI_PARAM_TARGET_NAME)
-#define ISCSI_TPGT (1 << ISCSI_PARAM_TPGT)
-#define ISCSI_PERSISTENT_ADDRESS (1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
-#define ISCSI_PERSISTENT_PORT (1 << ISCSI_PARAM_PERSISTENT_PORT)
-#define ISCSI_SESS_RECOVERY_TMO (1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
-#define ISCSI_CONN_PORT (1 << ISCSI_PARAM_CONN_PORT)
-#define ISCSI_CONN_ADDRESS (1 << ISCSI_PARAM_CONN_ADDRESS)
-#define ISCSI_USERNAME (1 << ISCSI_PARAM_USERNAME)
-#define ISCSI_USERNAME_IN (1 << ISCSI_PARAM_USERNAME_IN)
-#define ISCSI_PASSWORD (1 << ISCSI_PARAM_PASSWORD)
-#define ISCSI_PASSWORD_IN (1 << ISCSI_PARAM_PASSWORD_IN)
-#define ISCSI_FAST_ABORT (1 << ISCSI_PARAM_FAST_ABORT)
-#define ISCSI_ABORT_TMO (1 << ISCSI_PARAM_ABORT_TMO)
-#define ISCSI_LU_RESET_TMO (1 << ISCSI_PARAM_LU_RESET_TMO)
-#define ISCSI_HOST_RESET_TMO (1 << ISCSI_PARAM_HOST_RESET_TMO)
-#define ISCSI_PING_TMO (1 << ISCSI_PARAM_PING_TMO)
-#define ISCSI_RECV_TMO (1 << ISCSI_PARAM_RECV_TMO)
+#define ISCSI_MAX_RECV_DLENGTH (1ULL << ISCSI_PARAM_MAX_RECV_DLENGTH)
+#define ISCSI_MAX_XMIT_DLENGTH (1ULL << ISCSI_PARAM_MAX_XMIT_DLENGTH)
+#define ISCSI_HDRDGST_EN (1ULL << ISCSI_PARAM_HDRDGST_EN)
+#define ISCSI_DATADGST_EN (1ULL << ISCSI_PARAM_DATADGST_EN)
+#define ISCSI_INITIAL_R2T_EN (1ULL << ISCSI_PARAM_INITIAL_R2T_EN)
+#define ISCSI_MAX_R2T (1ULL << ISCSI_PARAM_MAX_R2T)
+#define ISCSI_IMM_DATA_EN (1ULL << ISCSI_PARAM_IMM_DATA_EN)
+#define ISCSI_FIRST_BURST (1ULL << ISCSI_PARAM_FIRST_BURST)
+#define ISCSI_MAX_BURST (1ULL << ISCSI_PARAM_MAX_BURST)
+#define ISCSI_PDU_INORDER_EN (1ULL << ISCSI_PARAM_PDU_INORDER_EN)
+#define ISCSI_DATASEQ_INORDER_EN (1ULL << ISCSI_PARAM_DATASEQ_INORDER_EN)
+#define ISCSI_ERL (1ULL << ISCSI_PARAM_ERL)
+#define ISCSI_IFMARKER_EN (1ULL << ISCSI_PARAM_IFMARKER_EN)
+#define ISCSI_OFMARKER_EN (1ULL << ISCSI_PARAM_OFMARKER_EN)
+#define ISCSI_EXP_STATSN (1ULL << ISCSI_PARAM_EXP_STATSN)
+#define ISCSI_TARGET_NAME (1ULL << ISCSI_PARAM_TARGET_NAME)
+#define ISCSI_TPGT (1ULL << ISCSI_PARAM_TPGT)
+#define ISCSI_PERSISTENT_ADDRESS (1ULL << ISCSI_PARAM_PERSISTENT_ADDRESS)
+#define ISCSI_PERSISTENT_PORT (1ULL << ISCSI_PARAM_PERSISTENT_PORT)
+#define ISCSI_SESS_RECOVERY_TMO (1ULL << ISCSI_PARAM_SESS_RECOVERY_TMO)
+#define ISCSI_CONN_PORT (1ULL << ISCSI_PARAM_CONN_PORT)
+#define ISCSI_CONN_ADDRESS (1ULL << ISCSI_PARAM_CONN_ADDRESS)
+#define ISCSI_USERNAME (1ULL << ISCSI_PARAM_USERNAME)
+#define ISCSI_USERNAME_IN (1ULL << ISCSI_PARAM_USERNAME_IN)
+#define ISCSI_PASSWORD (1ULL << ISCSI_PARAM_PASSWORD)
+#define ISCSI_PASSWORD_IN (1ULL << ISCSI_PARAM_PASSWORD_IN)
+#define ISCSI_FAST_ABORT (1ULL << ISCSI_PARAM_FAST_ABORT)
+#define ISCSI_ABORT_TMO (1ULL << ISCSI_PARAM_ABORT_TMO)
+#define ISCSI_LU_RESET_TMO (1ULL << ISCSI_PARAM_LU_RESET_TMO)
+#define ISCSI_HOST_RESET_TMO (1ULL << ISCSI_PARAM_HOST_RESET_TMO)
+#define ISCSI_PING_TMO (1ULL << ISCSI_PARAM_PING_TMO)
+#define ISCSI_RECV_TMO (1ULL << ISCSI_PARAM_RECV_TMO)
+#define ISCSI_IFACE_NAME (1ULL << ISCSI_PARAM_IFACE_NAME)
+#define ISCSI_ISID (1ULL << ISCSI_PARAM_ISID)
+#define ISCSI_INITIATOR_NAME (1ULL << ISCSI_PARAM_INITIATOR_NAME)
/* iSCSI HBA params */
enum iscsi_host_param {
@@ -296,20 +310,13 @@ enum iscsi_host_param {
ISCSI_HOST_PARAM_MAX,
};
-#define ISCSI_HOST_HWADDRESS (1 << ISCSI_HOST_PARAM_HWADDRESS)
-#define ISCSI_HOST_INITIATOR_NAME (1 << ISCSI_HOST_PARAM_INITIATOR_NAME)
-#define ISCSI_HOST_NETDEV_NAME (1 << ISCSI_HOST_PARAM_NETDEV_NAME)
-#define ISCSI_HOST_IPADDRESS (1 << ISCSI_HOST_PARAM_IPADDRESS)
+#define ISCSI_HOST_HWADDRESS (1ULL << ISCSI_HOST_PARAM_HWADDRESS)
+#define ISCSI_HOST_INITIATOR_NAME (1ULL << ISCSI_HOST_PARAM_INITIATOR_NAME)
+#define ISCSI_HOST_NETDEV_NAME (1ULL << ISCSI_HOST_PARAM_NETDEV_NAME)
+#define ISCSI_HOST_IPADDRESS (1ULL << ISCSI_HOST_PARAM_IPADDRESS)
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
-#define hostdata_session(_hostdata) (iscsi_ptr(*(unsigned long *)_hostdata))
-
-/**
- * iscsi_hostdata - get LLD hostdata from scsi_host
- * @_hostdata: pointer to scsi host's hostdata
- **/
-#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
/*
* These flags presents iSCSI Data-Path capabilities.
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index e0593bfae62..f2a2c116948 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -22,6 +22,7 @@
#define ISCSI_PROTO_H
#include <linux/types.h>
+#include <scsi/scsi.h>
#define ISCSI_DRAFT20_VERSION 0x00
@@ -156,7 +157,7 @@ struct iscsi_ecdb_ahdr {
uint8_t ahstype;
uint8_t reserved;
/* 4-byte aligned extended CDB spillover */
- uint8_t ecdb[260 - ISCSI_CDB_SIZE];
+ uint8_t ecdb[SCSI_MAX_VARLEN_CDB_SIZE - ISCSI_CDB_SIZE];
};
/* SCSI Response Header */
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index cd3ca63d4fb..5e75bb7f311 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -24,6 +24,7 @@
#define LIBISCSI_H
#include <linux/types.h>
+#include <linux/wait.h>
#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
@@ -31,6 +32,7 @@
#include <scsi/iscsi_if.h>
struct scsi_transport_template;
+struct scsi_host_template;
struct scsi_device;
struct Scsi_Host;
struct scsi_cmnd;
@@ -40,6 +42,7 @@ struct iscsi_cls_session;
struct iscsi_cls_conn;
struct iscsi_session;
struct iscsi_nopin;
+struct device;
/* #define DEBUG_SCSI */
#ifdef DEBUG_SCSI
@@ -49,9 +52,7 @@ struct iscsi_nopin;
#endif
#define ISCSI_DEF_XMIT_CMDS_MAX 128 /* must be power of 2 */
-#define ISCSI_MGMT_CMDS_MAX 16 /* must be power of 2 */
-
-#define ISCSI_MGMT_ITT_OFFSET 0xa00
+#define ISCSI_MGMT_CMDS_MAX 15
#define ISCSI_DEF_CMD_PER_LUN 32
#define ISCSI_MAX_CMD_PER_LUN 128
@@ -69,7 +70,10 @@ enum {
/* Connection suspend "bit" */
#define ISCSI_SUSPEND_BIT 1
-#define ISCSI_ITT_MASK (0xfff)
+#define ISCSI_ITT_MASK (0x1fff)
+#define ISCSI_TOTAL_CMDS_MAX 4096
+/* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */
+#define ISCSI_TOTAL_CMDS_MIN 16
#define ISCSI_AGE_SHIFT 28
#define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT)
@@ -82,18 +86,6 @@ enum {
ISCSI_DIGEST_SIZE = sizeof(__u32),
};
-struct iscsi_mgmt_task {
- /*
- * Becuae LLDs allocate their hdr differently, this is a pointer to
- * that storage. It must be setup at session creation time.
- */
- struct iscsi_hdr *hdr;
- char *data; /* mgmt payload */
- unsigned data_count; /* counts data to be sent */
- uint32_t itt; /* this ITT */
- void *dd_data; /* driver/transport data */
- struct list_head running;
-};
enum {
ISCSI_TASK_COMPLETED,
@@ -101,7 +93,7 @@ enum {
ISCSI_TASK_RUNNING,
};
-struct iscsi_cmd_task {
+struct iscsi_task {
/*
* Because LLDs allocate their hdr differently, this is a pointer
* and length to that storage. It must be setup at session
@@ -118,6 +110,7 @@ struct iscsi_cmd_task {
/* offset in unsolicited stream (bytes); */
unsigned unsol_offset;
unsigned data_count; /* remaining Data-Out */
+ char *data; /* mgmt payload */
struct scsi_cmnd *sc; /* associated SCSI cmd*/
struct iscsi_conn *conn; /* used connection */
@@ -128,9 +121,9 @@ struct iscsi_cmd_task {
void *dd_data; /* driver/transport data */
};
-static inline void* iscsi_next_hdr(struct iscsi_cmd_task *ctask)
+static inline void* iscsi_next_hdr(struct iscsi_task *task)
{
- return (void*)ctask->hdr + ctask->hdr_len;
+ return (void*)task->hdr + task->hdr_len;
}
/* Connection's states */
@@ -146,11 +139,6 @@ struct iscsi_conn {
void *dd_data; /* iscsi_transport data */
struct iscsi_session *session; /* parent session */
/*
- * LLDs should set this lock. It protects the transport recv
- * code
- */
- rwlock_t *recv_lock;
- /*
* conn_stop() flag: stop to recover, stop to terminate
*/
int stop_stage;
@@ -159,7 +147,7 @@ struct iscsi_conn {
unsigned long last_ping;
int ping_timeout;
int recv_timeout;
- struct iscsi_mgmt_task *ping_mtask;
+ struct iscsi_task *ping_task;
/* iSCSI connection-wide sequencing */
uint32_t exp_statsn;
@@ -175,9 +163,8 @@ struct iscsi_conn {
* should always fit in this buffer
*/
char *data;
- struct iscsi_mgmt_task *login_mtask; /* mtask used for login/text */
- struct iscsi_mgmt_task *mtask; /* xmit mtask in progress */
- struct iscsi_cmd_task *ctask; /* xmit ctask in progress */
+ struct iscsi_task *login_task; /* mtask used for login/text */
+ struct iscsi_task *task; /* xmit task in progress */
/* xmit */
struct list_head mgmtqueue; /* mgmt (control) xmit queue */
@@ -208,9 +195,6 @@ struct iscsi_conn {
/* remote portal currently connected to */
int portal_port;
char portal_address[ISCSI_ADDRESS_BUF_LEN];
- /* local address */
- int local_port;
- char local_address[ISCSI_ADDRESS_BUF_LEN];
/* MIB-statistics */
uint64_t txdata_octets;
@@ -246,6 +230,7 @@ enum {
};
struct iscsi_session {
+ struct iscsi_cls_session *cls_session;
/*
* Syncs up the scsi eh thread with the iscsi eh thread when sending
* task management functions. This must be taken before the session
@@ -281,10 +266,8 @@ struct iscsi_session {
char *password;
char *password_in;
char *targetname;
+ char *ifacename;
char *initiatorname;
- /* hw address or netdev iscsi connection is bound to */
- char *hwaddress;
- char *netdev;
/* control data */
struct iscsi_transport *tt;
struct Scsi_Host *host;
@@ -298,12 +281,20 @@ struct iscsi_session {
int state; /* session state */
int age; /* counts session re-opens */
+ int scsi_cmds_max; /* max scsi commands */
int cmds_max; /* size of cmds array */
- struct iscsi_cmd_task **cmds; /* Original Cmds arr */
+ struct iscsi_task **cmds; /* Original Cmds arr */
struct iscsi_pool cmdpool; /* PDU's pool */
- int mgmtpool_max; /* size of mgmt array */
- struct iscsi_mgmt_task **mgmt_cmds; /* Original mgmt arr */
- struct iscsi_pool mgmtpool; /* Mgmt PDU's pool */
+};
+
+struct iscsi_host {
+ char *initiatorname;
+ /* hw address or netdev iscsi connection is bound to */
+ char *hwaddress;
+ char *netdev;
+ /* local address */
+ int local_port;
+ char local_address[ISCSI_ADDRESS_BUF_LEN];
};
/*
@@ -316,42 +307,44 @@ extern int iscsi_eh_device_reset(struct scsi_cmnd *sc);
extern int iscsi_queuecommand(struct scsi_cmnd *sc,
void (*done)(struct scsi_cmnd *));
-
/*
* iSCSI host helpers.
*/
+#define iscsi_host_priv(_shost) \
+ (shost_priv(_shost) + sizeof(struct iscsi_host))
+
extern int iscsi_host_set_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf,
int buflen);
extern int iscsi_host_get_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf);
+extern int iscsi_host_add(struct Scsi_Host *shost, struct device *pdev);
+extern struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht,
+ int dd_data_size, uint16_t qdepth);
+extern void iscsi_host_remove(struct Scsi_Host *shost);
+extern void iscsi_host_free(struct Scsi_Host *shost);
/*
* session management
*/
extern struct iscsi_cls_session *
-iscsi_session_setup(struct iscsi_transport *, struct scsi_transport_template *,
- uint16_t, uint16_t, int, int, uint32_t, uint32_t *);
+iscsi_session_setup(struct iscsi_transport *, struct Scsi_Host *shost,
+ uint16_t, int, uint32_t, unsigned int);
extern void iscsi_session_teardown(struct iscsi_cls_session *);
-extern struct iscsi_session *class_to_transport_session(struct iscsi_cls_session *);
extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);
extern int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf, int buflen);
extern int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
enum iscsi_param param, char *buf);
-#define session_to_cls(_sess) \
- hostdata_session(_sess->host->hostdata)
-
#define iscsi_session_printk(prefix, _sess, fmt, a...) \
- iscsi_cls_session_printk(prefix, \
- (struct iscsi_cls_session *)session_to_cls(_sess), fmt, ##a)
+ iscsi_cls_session_printk(prefix, _sess->cls_session, fmt, ##a)
/*
* connection management
*/
extern struct iscsi_cls_conn *iscsi_conn_setup(struct iscsi_cls_session *,
- uint32_t);
+ int, uint32_t);
extern void iscsi_conn_teardown(struct iscsi_cls_conn *);
extern int iscsi_conn_start(struct iscsi_cls_conn *);
extern void iscsi_conn_stop(struct iscsi_cls_conn *, int);
@@ -360,25 +353,29 @@ extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn *,
extern void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err);
extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf);
+extern void iscsi_suspend_tx(struct iscsi_conn *conn);
#define iscsi_conn_printk(prefix, _c, fmt, a...) \
- iscsi_cls_conn_printk(prefix, _c->cls_conn, fmt, ##a)
+ iscsi_cls_conn_printk(prefix, ((struct iscsi_conn *)_c)->cls_conn, \
+ fmt, ##a)
/*
* pdu and task processing
*/
extern void iscsi_update_cmdsn(struct iscsi_session *, struct iscsi_nopin *);
-extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_cmd_task *,
+extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *,
struct iscsi_data *hdr);
extern int iscsi_conn_send_pdu(struct iscsi_cls_conn *, struct iscsi_hdr *,
char *, uint32_t);
extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
char *, int);
-extern int iscsi_verify_itt(struct iscsi_conn *, struct iscsi_hdr *,
- uint32_t *);
-extern void iscsi_requeue_ctask(struct iscsi_cmd_task *ctask);
-extern void iscsi_free_mgmt_task(struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask);
+extern int __iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
+ char *, int);
+extern int iscsi_verify_itt(struct iscsi_conn *, itt_t);
+extern struct iscsi_task *iscsi_itt_to_ctask(struct iscsi_conn *, itt_t);
+extern void iscsi_requeue_task(struct iscsi_task *task);
+extern void iscsi_put_task(struct iscsi_task *task);
+extern void __iscsi_get_task(struct iscsi_task *task);
/*
* generic helpers
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 32742c4563d..00137a7769e 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -9,6 +9,7 @@
#define _SCSI_SCSI_H
#include <linux/types.h>
+#include <scsi/scsi_cmnd.h>
/*
* The maximum number of SG segments that we will put inside a
@@ -400,6 +401,7 @@ struct scsi_lun {
#define SOFT_ERROR 0x2005
#define ADD_TO_MLQUEUE 0x2006
#define TIMEOUT_ERROR 0x2007
+#define SCSI_RETURN_NOT_HANDLED 0x2008
/*
* Midlevel queue return values.
@@ -424,6 +426,22 @@ struct scsi_lun {
#define driver_byte(result) (((result) >> 24) & 0xff)
#define suggestion(result) (driver_byte(result) & SUGGEST_MASK)
+static inline void set_msg_byte(struct scsi_cmnd *cmd, char status)
+{
+ cmd->result |= status << 8;
+}
+
+static inline void set_host_byte(struct scsi_cmnd *cmd, char status)
+{
+ cmd->result |= status << 16;
+}
+
+static inline void set_driver_byte(struct scsi_cmnd *cmd, char status)
+{
+ cmd->result |= status << 24;
+}
+
+
#define sense_class(sense) (((sense) >> 4) & 0x7)
#define sense_error(sense) ((sense) & 0xf)
#define sense_valid(sense) ((sense) & 0x80);
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 3e46dfae819..66c944849d6 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -7,7 +7,6 @@
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/scatterlist.h>
-#include <linux/blkdev.h>
struct Scsi_Host;
struct scsi_device;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 00b78763a1b..6467f78b191 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -162,9 +162,29 @@ struct scsi_device {
struct execute_work ew; /* used to get process context on put */
+ struct scsi_dh_data *scsi_dh_data;
enum scsi_device_state sdev_state;
unsigned long sdev_data[0];
} __attribute__((aligned(sizeof(unsigned long))));
+
+struct scsi_device_handler {
+ /* Used by the infrastructure */
+ struct list_head list; /* list of scsi_device_handlers */
+ struct notifier_block nb;
+
+ /* Filled by the hardware handler */
+ struct module *module;
+ const char *name;
+ int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *);
+ int (*activate)(struct scsi_device *);
+ int (*prep_fn)(struct scsi_device *, struct request *);
+};
+
+struct scsi_dh_data {
+ struct scsi_device_handler *scsi_dh;
+ char buf[0];
+};
+
#define to_scsi_device(d) \
container_of(d, struct scsi_device, sdev_gendev)
#define class_to_sdev(d) \
@@ -231,7 +251,9 @@ extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
uint, uint, uint, void *hostdata);
extern int scsi_add_device(struct Scsi_Host *host, uint channel,
uint target, uint lun);
+extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
extern void scsi_remove_device(struct scsi_device *);
+extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
extern int scsi_device_get(struct scsi_device *);
extern void scsi_device_put(struct scsi_device *);
diff --git a/include/scsi/scsi_dh.h b/include/scsi/scsi_dh.h
new file mode 100644
index 00000000000..3ad2303d1a1
--- /dev/null
+++ b/include/scsi/scsi_dh.h
@@ -0,0 +1,69 @@
+/*
+ * Header file for SCSI device handler infrastruture.
+ *
+ * Modified version of patches posted by Mike Christie <michaelc@cs.wisc.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright IBM Corporation, 2007
+ * Authors:
+ * Chandra Seetharaman <sekharan@us.ibm.com>
+ * Mike Anderson <andmike@linux.vnet.ibm.com>
+ */
+
+#include <scsi/scsi_device.h>
+
+enum {
+ SCSI_DH_OK = 0,
+ /*
+ * device errors
+ */
+ SCSI_DH_DEV_FAILED, /* generic device error */
+ SCSI_DH_DEV_TEMP_BUSY,
+ SCSI_DH_DEVICE_MAX, /* max device blkerr definition */
+
+ /*
+ * transport errors
+ */
+ SCSI_DH_NOTCONN = SCSI_DH_DEVICE_MAX + 1,
+ SCSI_DH_CONN_FAILURE,
+ SCSI_DH_TRANSPORT_MAX, /* max transport blkerr definition */
+
+ /*
+ * driver and generic errors
+ */
+ SCSI_DH_IO = SCSI_DH_TRANSPORT_MAX + 1, /* generic error */
+ SCSI_DH_INVALID_IO,
+ SCSI_DH_RETRY, /* retry the req, but not immediately */
+ SCSI_DH_IMM_RETRY, /* immediately retry the req */
+ SCSI_DH_TIMED_OUT,
+ SCSI_DH_RES_TEMP_UNAVAIL,
+ SCSI_DH_DEV_OFFLINED,
+ SCSI_DH_NOSYS,
+ SCSI_DH_DRIVER_MAX,
+};
+#if defined(CONFIG_SCSI_DH) || defined(CONFIG_SCSI_DH_MODULE)
+extern int scsi_dh_activate(struct request_queue *);
+extern int scsi_dh_handler_exist(const char *);
+#else
+static inline int scsi_dh_activate(struct request_queue *req)
+{
+ return 0;
+}
+static inline int scsi_dh_handler_exist(const char *name)
+{
+ return 0;
+}
+#endif
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index aab1eae2ec4..f5444e033cc 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -30,11 +30,11 @@
struct scsi_transport_template;
struct iscsi_transport;
+struct iscsi_endpoint;
struct Scsi_Host;
struct iscsi_cls_conn;
struct iscsi_conn;
-struct iscsi_cmd_task;
-struct iscsi_mgmt_task;
+struct iscsi_task;
struct sockaddr;
/**
@@ -58,19 +58,22 @@ struct sockaddr;
* @stop_conn: suspend/recover/terminate connection
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
* @session_recovery_timedout: notify LLD a block during recovery timed out
- * @init_cmd_task: Initialize a iscsi_cmd_task and any internal structs.
- * Called from queuecommand with session lock held.
- * @init_mgmt_task: Initialize a iscsi_mgmt_task and any internal structs.
- * Called from iscsi_conn_send_generic with xmitmutex.
- * @xmit_cmd_task: Requests LLD to transfer cmd task. Returns 0 or the
+ * @init_task: Initialize a iscsi_task and any internal structs.
+ * When offloading the data path, this is called from
+ * queuecommand with the session lock, or from the
+ * iscsi_conn_send_pdu context with the session lock.
+ * When not offloading the data path, this is called
+ * from the scsi work queue without the session lock.
+ * @xmit_task Requests LLD to transfer cmd task. Returns 0 or the
* the number of bytes transferred on success, and -Exyz
- * value on error.
- * @xmit_mgmt_task: Requests LLD to transfer mgmt task. Returns 0 or the
- * the number of bytes transferred on success, and -Exyz
- * value on error.
- * @cleanup_cmd_task: requests LLD to fail cmd task. Called with xmitmutex
- * and session->lock after the connection has been
- * suspended and terminated during recovery. If called
+ * value on error. When offloading the data path, this
+ * is called from queuecommand with the session lock, or
+ * from the iscsi_conn_send_pdu context with the session
+ * lock. When not offloading the data path, this is called
+ * from the scsi work queue without the session lock.
+ * @cleanup_task: requests LLD to fail task. Called with session lock
+ * and after the connection has been suspended and
+ * terminated during recovery. If called
* from abort task then connection is not suspended
* or terminated but sk_callback_lock is held
*
@@ -83,17 +86,9 @@ struct iscsi_transport {
/* LLD sets this to indicate what values it can export to sysfs */
uint64_t param_mask;
uint64_t host_param_mask;
- struct scsi_host_template *host_template;
- /* LLD connection data size */
- int conndata_size;
- /* LLD session data size */
- int sessiondata_size;
- int max_lun;
- unsigned int max_conn;
- unsigned int max_cmd_len;
- struct iscsi_cls_session *(*create_session) (struct iscsi_transport *it,
- struct scsi_transport_template *t, uint16_t, uint16_t,
- uint32_t sn, uint32_t *hn);
+ struct iscsi_cls_session *(*create_session) (struct iscsi_endpoint *ep,
+ uint16_t cmds_max, uint16_t qdepth,
+ uint32_t sn, uint32_t *hn);
void (*destroy_session) (struct iscsi_cls_session *session);
struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess,
uint32_t cid);
@@ -118,20 +113,15 @@ struct iscsi_transport {
char *data, uint32_t data_size);
void (*get_stats) (struct iscsi_cls_conn *conn,
struct iscsi_stats *stats);
- int (*init_cmd_task) (struct iscsi_cmd_task *ctask);
- void (*init_mgmt_task) (struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask);
- int (*xmit_cmd_task) (struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask);
- void (*cleanup_cmd_task) (struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask);
- int (*xmit_mgmt_task) (struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask);
+ int (*init_task) (struct iscsi_task *task);
+ int (*xmit_task) (struct iscsi_task *task);
+ void (*cleanup_task) (struct iscsi_conn *conn,
+ struct iscsi_task *task);
void (*session_recovery_timedout) (struct iscsi_cls_session *session);
- int (*ep_connect) (struct sockaddr *dst_addr, int non_blocking,
- uint64_t *ep_handle);
- int (*ep_poll) (uint64_t ep_handle, int timeout_ms);
- void (*ep_disconnect) (uint64_t ep_handle);
+ struct iscsi_endpoint *(*ep_connect) (struct sockaddr *dst_addr,
+ int non_blocking);
+ int (*ep_poll) (struct iscsi_endpoint *ep, int timeout_ms);
+ void (*ep_disconnect) (struct iscsi_endpoint *ep);
int (*tgt_dscvr) (struct Scsi_Host *shost, enum iscsi_tgt_dscvr type,
uint32_t enable, struct sockaddr *dst_addr);
};
@@ -172,9 +162,10 @@ enum {
ISCSI_SESSION_FREE,
};
+#define ISCSI_MAX_TARGET -1
+
struct iscsi_cls_session {
struct list_head sess_list; /* item in session_list */
- struct list_head host_list;
struct iscsi_transport *transport;
spinlock_t lock;
struct work_struct block_work;
@@ -186,7 +177,7 @@ struct iscsi_cls_session {
int recovery_tmo;
struct delayed_work recovery_work;
- int target_id;
+ unsigned int target_id;
int state;
int sid; /* session id */
@@ -203,14 +194,22 @@ struct iscsi_cls_session {
#define starget_to_session(_stgt) \
iscsi_dev_to_session(_stgt->dev.parent)
-struct iscsi_host {
- struct list_head sessions;
+struct iscsi_cls_host {
atomic_t nr_scans;
struct mutex mutex;
struct workqueue_struct *scan_workq;
char scan_workq_name[KOBJ_NAME_LEN];
};
+extern void iscsi_host_for_each_session(struct Scsi_Host *shost,
+ void (*fn)(struct iscsi_cls_session *));
+
+struct iscsi_endpoint {
+ void *dd_data; /* LLD private data */
+ struct device dev;
+ unsigned int id;
+};
+
/*
* session and connection functions that can be used by HW iSCSI LLDs
*/
@@ -222,22 +221,26 @@ struct iscsi_host {
extern int iscsi_session_chkready(struct iscsi_cls_session *session);
extern struct iscsi_cls_session *iscsi_alloc_session(struct Scsi_Host *shost,
- struct iscsi_transport *transport);
+ struct iscsi_transport *transport, int dd_size);
extern int iscsi_add_session(struct iscsi_cls_session *session,
unsigned int target_id);
extern int iscsi_session_event(struct iscsi_cls_session *session,
enum iscsi_uevent_e event);
extern struct iscsi_cls_session *iscsi_create_session(struct Scsi_Host *shost,
struct iscsi_transport *t,
+ int dd_size,
unsigned int target_id);
extern void iscsi_remove_session(struct iscsi_cls_session *session);
extern void iscsi_free_session(struct iscsi_cls_session *session);
extern int iscsi_destroy_session(struct iscsi_cls_session *session);
extern struct iscsi_cls_conn *iscsi_create_conn(struct iscsi_cls_session *sess,
- uint32_t cid);
+ int dd_size, uint32_t cid);
extern int iscsi_destroy_conn(struct iscsi_cls_conn *conn);
extern void iscsi_unblock_session(struct iscsi_cls_session *session);
extern void iscsi_block_session(struct iscsi_cls_session *session);
extern int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time);
+extern struct iscsi_endpoint *iscsi_create_endpoint(int dd_size);
+extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep);
+extern struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle);
#endif
diff --git a/include/scsi/sd.h b/include/scsi/sd.h
deleted file mode 100644
index 4f032d48cb6..00000000000
--- a/include/scsi/sd.h
+++ /dev/null
@@ -1,57 +0,0 @@
-#ifndef _SCSI_DISK_H
-#define _SCSI_DISK_H
-
-/*
- * More than enough for everybody ;) The huge number of majors
- * is a leftover from 16bit dev_t days, we don't really need that
- * much numberspace.
- */
-#define SD_MAJORS 16
-
-/*
- * This is limited by the naming scheme enforced in sd_probe,
- * add another character to it if you really need more disks.
- */
-#define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26)
-
-/*
- * Time out in seconds for disks and Magneto-opticals (which are slower).
- */
-#define SD_TIMEOUT (30 * HZ)
-#define SD_MOD_TIMEOUT (75 * HZ)
-
-/*
- * Number of allowed retries
- */
-#define SD_MAX_RETRIES 5
-#define SD_PASSTHROUGH_RETRIES 1
-
-/*
- * Size of the initial data buffer for mode and read capacity data
- */
-#define SD_BUF_SIZE 512
-
-struct scsi_disk {
- struct scsi_driver *driver; /* always &sd_template */
- struct scsi_device *device;
- struct device dev;
- struct gendisk *disk;
- unsigned int openers; /* protected by BKL for now, yuck */
- sector_t capacity; /* size in 512-byte sectors */
- u32 index;
- u8 media_present;
- u8 write_prot;
- unsigned previous_state : 1;
- unsigned WCE : 1; /* state of disk WCE bit */
- unsigned RCD : 1; /* state of disk RCD bit, unused */
- unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
-};
-#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
-
-#define sd_printk(prefix, sdsk, fmt, a...) \
- (sdsk)->disk ? \
- sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \
- (sdsk)->disk->disk_name, ##a) : \
- sdev_printk(prefix, (sdsk)->device, fmt, ##a)
-
-#endif /* _SCSI_DISK_H */
diff --git a/include/scsi/sg.h b/include/scsi/sg.h
index 519c49a0fc1..934ae389671 100644
--- a/include/scsi/sg.h
+++ b/include/scsi/sg.h
@@ -206,6 +206,7 @@ typedef struct sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
#define SG_SCSI_RESET_DEVICE 1
#define SG_SCSI_RESET_BUS 2
#define SG_SCSI_RESET_HOST 3
+#define SG_SCSI_RESET_TARGET 4
/* synchronous SCSI command ioctl, (only in version 3 interface) */
#define SG_IO 0x2285 /* similar effect as write() followed by read() */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 01:30:16 +0000