}
EXPORT_SYMBOL_GPL(iscsi_update_cmdsn);
-void iscsi_prep_unsolicit_data_pdu(struct iscsi_cmd_task *ctask,
+void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *task,
struct iscsi_data *hdr)
{
- struct iscsi_conn *conn = ctask->conn;
+ struct iscsi_conn *conn = task->conn;
memset(hdr, 0, sizeof(struct iscsi_data));
hdr->ttt = cpu_to_be32(ISCSI_RESERVED_TAG);
- hdr->datasn = cpu_to_be32(ctask->unsol_datasn);
- ctask->unsol_datasn++;
+ hdr->datasn = cpu_to_be32(task->unsol_datasn);
+ task->unsol_datasn++;
hdr->opcode = ISCSI_OP_SCSI_DATA_OUT;
- memcpy(hdr->lun, ctask->hdr->lun, sizeof(hdr->lun));
+ memcpy(hdr->lun, task->hdr->lun, sizeof(hdr->lun));
- hdr->itt = ctask->hdr->itt;
+ hdr->itt = task->hdr->itt;
hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
- hdr->offset = cpu_to_be32(ctask->unsol_offset);
+ hdr->offset = cpu_to_be32(task->unsol_offset);
- if (ctask->unsol_count > conn->max_xmit_dlength) {
+ if (task->unsol_count > conn->max_xmit_dlength) {
hton24(hdr->dlength, conn->max_xmit_dlength);
- ctask->data_count = conn->max_xmit_dlength;
- ctask->unsol_offset += ctask->data_count;
+ task->data_count = conn->max_xmit_dlength;
+ task->unsol_offset += task->data_count;
hdr->flags = 0;
} else {
- hton24(hdr->dlength, ctask->unsol_count);
- ctask->data_count = ctask->unsol_count;
+ hton24(hdr->dlength, task->unsol_count);
+ task->data_count = task->unsol_count;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
}
}
EXPORT_SYMBOL_GPL(iscsi_prep_unsolicit_data_pdu);
-static int iscsi_add_hdr(struct iscsi_cmd_task *ctask, unsigned len)
+static int iscsi_add_hdr(struct iscsi_task *task, unsigned len)
{
- unsigned exp_len = ctask->hdr_len + len;
+ unsigned exp_len = task->hdr_len + len;
- if (exp_len > ctask->hdr_max) {
+ if (exp_len > task->hdr_max) {
WARN_ON(1);
return -EINVAL;
}
WARN_ON(len & (ISCSI_PAD_LEN - 1)); /* caller must pad the AHS */
- ctask->hdr_len = exp_len;
+ task->hdr_len = exp_len;
return 0;
}
/*
* make an extended cdb AHS
*/
-static int iscsi_prep_ecdb_ahs(struct iscsi_cmd_task *ctask)
+static int iscsi_prep_ecdb_ahs(struct iscsi_task *task)
{
- struct scsi_cmnd *cmd = ctask->sc;
+ struct scsi_cmnd *cmd = task->sc;
unsigned rlen, pad_len;
unsigned short ahslength;
struct iscsi_ecdb_ahdr *ecdb_ahdr;
int rc;
- ecdb_ahdr = iscsi_next_hdr(ctask);
+ ecdb_ahdr = iscsi_next_hdr(task);
rlen = cmd->cmd_len - ISCSI_CDB_SIZE;
BUG_ON(rlen > sizeof(ecdb_ahdr->ecdb));
pad_len = iscsi_padding(rlen);
- rc = iscsi_add_hdr(ctask, sizeof(ecdb_ahdr->ahslength) +
+ rc = iscsi_add_hdr(task, sizeof(ecdb_ahdr->ahslength) +
sizeof(ecdb_ahdr->ahstype) + ahslength + pad_len);
if (rc)
return rc;
debug_scsi("iscsi_prep_ecdb_ahs: varlen_cdb_len %d "
"rlen %d pad_len %d ahs_length %d iscsi_headers_size %u\n",
- cmd->cmd_len, rlen, pad_len, ahslength, ctask->hdr_len);
+ cmd->cmd_len, rlen, pad_len, ahslength, task->hdr_len);
return 0;
}
-static int iscsi_prep_bidi_ahs(struct iscsi_cmd_task *ctask)
+static int iscsi_prep_bidi_ahs(struct iscsi_task *task)
{
- struct scsi_cmnd *sc = ctask->sc;
+ struct scsi_cmnd *sc = task->sc;
struct iscsi_rlength_ahdr *rlen_ahdr;
int rc;
- rlen_ahdr = iscsi_next_hdr(ctask);
- rc = iscsi_add_hdr(ctask, sizeof(*rlen_ahdr));
+ rlen_ahdr = iscsi_next_hdr(task);
+ rc = iscsi_add_hdr(task, sizeof(*rlen_ahdr));
if (rc)
return rc;
/**
* iscsi_prep_scsi_cmd_pdu - prep iscsi scsi cmd pdu
- * @ctask: iscsi task
+ * @task: iscsi task
*
* Prep basic iSCSI PDU fields for a scsi cmd pdu. The LLD should set
* fields like dlength or final based on how much data it sends
*/
-static int iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
+static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task)
{
- struct iscsi_conn *conn = ctask->conn;
+ struct iscsi_conn *conn = task->conn;
struct iscsi_session *session = conn->session;
- struct iscsi_cmd *hdr = ctask->hdr;
- struct scsi_cmnd *sc = ctask->sc;
+ struct iscsi_cmd *hdr = task->hdr;
+ struct scsi_cmnd *sc = task->sc;
unsigned hdrlength, cmd_len;
int rc;
- ctask->hdr_len = 0;
- rc = iscsi_add_hdr(ctask, sizeof(*hdr));
+ task->hdr_len = 0;
+ rc = iscsi_add_hdr(task, sizeof(*hdr));
if (rc)
return rc;
hdr->opcode = ISCSI_OP_SCSI_CMD;
hdr->flags = ISCSI_ATTR_SIMPLE;
int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
- hdr->itt = build_itt(ctask->itt, session->age);
+ hdr->itt = build_itt(task->itt, session->age);
hdr->cmdsn = cpu_to_be32(session->cmdsn);
session->cmdsn++;
hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
if (cmd_len < ISCSI_CDB_SIZE)
memset(&hdr->cdb[cmd_len], 0, ISCSI_CDB_SIZE - cmd_len);
else if (cmd_len > ISCSI_CDB_SIZE) {
- rc = iscsi_prep_ecdb_ahs(ctask);
+ rc = iscsi_prep_ecdb_ahs(task);
if (rc)
return rc;
cmd_len = ISCSI_CDB_SIZE;
}
memcpy(hdr->cdb, sc->cmnd, cmd_len);
- ctask->imm_count = 0;
+ task->imm_count = 0;
if (scsi_bidi_cmnd(sc)) {
hdr->flags |= ISCSI_FLAG_CMD_READ;
- rc = iscsi_prep_bidi_ahs(ctask);
+ rc = iscsi_prep_bidi_ahs(task);
if (rc)
return rc;
}
*
* pad_count bytes to be sent as zero-padding
*/
- ctask->unsol_count = 0;
- ctask->unsol_offset = 0;
- ctask->unsol_datasn = 0;
+ task->unsol_count = 0;
+ task->unsol_offset = 0;
+ task->unsol_datasn = 0;
if (session->imm_data_en) {
if (out_len >= session->first_burst)
- ctask->imm_count = min(session->first_burst,
+ task->imm_count = min(session->first_burst,
conn->max_xmit_dlength);
else
- ctask->imm_count = min(out_len,
+ task->imm_count = min(out_len,
conn->max_xmit_dlength);
- hton24(hdr->dlength, ctask->imm_count);
+ hton24(hdr->dlength, task->imm_count);
} else
zero_data(hdr->dlength);
if (!session->initial_r2t_en) {
- ctask->unsol_count = min(session->first_burst, out_len)
- - ctask->imm_count;
- ctask->unsol_offset = ctask->imm_count;
+ task->unsol_count = min(session->first_burst, out_len)
+ - task->imm_count;
+ task->unsol_offset = task->imm_count;
}
- if (!ctask->unsol_count)
+ if (!task->unsol_count)
/* No unsolicit Data-Out's */
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
} else {
}
/* calculate size of additional header segments (AHSs) */
- hdrlength = ctask->hdr_len - sizeof(*hdr);
+ hdrlength = task->hdr_len - sizeof(*hdr);
WARN_ON(hdrlength & (ISCSI_PAD_LEN-1));
hdrlength /= ISCSI_PAD_LEN;
hdr->hlength = hdrlength & 0xFF;
if (conn->session->tt->init_task &&
- conn->session->tt->init_task(ctask))
+ conn->session->tt->init_task(task))
return -EIO;
- ctask->state = ISCSI_TASK_RUNNING;
- list_move_tail(&ctask->running, &conn->run_list);
+ task->state = ISCSI_TASK_RUNNING;
+ list_move_tail(&task->running, &conn->run_list);
conn->scsicmd_pdus_cnt++;
debug_scsi("iscsi prep [%s cid %d sc %p cdb 0x%x itt 0x%x len %d "
"bidi_len %d cmdsn %d win %d]\n", scsi_bidi_cmnd(sc) ?
"bidirectional" : sc->sc_data_direction == DMA_TO_DEVICE ?
- "write" : "read", conn->id, sc, sc->cmnd[0], ctask->itt,
+ "write" : "read", conn->id, sc, sc->cmnd[0], task->itt,
scsi_bufflen(sc),
scsi_bidi_cmnd(sc) ? scsi_in(sc)->length : 0,
session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
/**
* iscsi_complete_command - finish a task
- * @ctask: iscsi cmd task
+ * @task: iscsi cmd task
*
* Must be called with session lock.
* This function returns the scsi command to scsi-ml or cleans
* up mgmt tasks then returns the task to the pool.
*/
-static void iscsi_complete_command(struct iscsi_cmd_task *ctask)
+static void iscsi_complete_command(struct iscsi_task *task)
{
- struct iscsi_conn *conn = ctask->conn;
+ struct iscsi_conn *conn = task->conn;
struct iscsi_session *session = conn->session;
- struct scsi_cmnd *sc = ctask->sc;
+ struct scsi_cmnd *sc = task->sc;
- list_del_init(&ctask->running);
- ctask->state = ISCSI_TASK_COMPLETED;
- ctask->sc = NULL;
+ list_del_init(&task->running);
+ task->state = ISCSI_TASK_COMPLETED;
+ task->sc = NULL;
- if (conn->ctask == ctask)
- conn->ctask = NULL;
+ if (conn->task == task)
+ conn->task = NULL;
/*
- * login ctask is preallocated so do not free
+ * login task is preallocated so do not free
*/
- if (conn->login_ctask == ctask)
+ if (conn->login_task == task)
return;
- __kfifo_put(session->cmdpool.queue, (void*)&ctask, sizeof(void*));
+ __kfifo_put(session->cmdpool.queue, (void*)&task, sizeof(void*));
- if (conn->ping_ctask == ctask)
- conn->ping_ctask = NULL;
+ if (conn->ping_task == task)
+ conn->ping_task = NULL;
if (sc) {
- ctask->sc = NULL;
+ task->sc = NULL;
/* SCSI eh reuses commands to verify us */
sc->SCp.ptr = NULL;
/*
}
}
-static void __iscsi_get_ctask(struct iscsi_cmd_task *ctask)
+static void __iscsi_get_task(struct iscsi_task *task)
{
- atomic_inc(&ctask->refcount);
+ atomic_inc(&task->refcount);
}
-static void __iscsi_put_ctask(struct iscsi_cmd_task *ctask)
+static void __iscsi_put_task(struct iscsi_task *task)
{
- if (atomic_dec_and_test(&ctask->refcount))
- iscsi_complete_command(ctask);
+ if (atomic_dec_and_test(&task->refcount))
+ iscsi_complete_command(task);
}
-void iscsi_put_ctask(struct iscsi_cmd_task *ctask)
+void iscsi_put_task(struct iscsi_task *task)
{
- struct iscsi_session *session = ctask->conn->session;
+ struct iscsi_session *session = task->conn->session;
spin_lock_bh(&session->lock);
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
spin_unlock_bh(&session->lock);
}
-EXPORT_SYMBOL_GPL(iscsi_put_ctask);
+EXPORT_SYMBOL_GPL(iscsi_put_task);
/*
* session lock must be held
*/
-static void fail_command(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
+static void fail_command(struct iscsi_conn *conn, struct iscsi_task *task,
int err)
{
struct scsi_cmnd *sc;
- sc = ctask->sc;
+ sc = task->sc;
if (!sc)
return;
- if (ctask->state == ISCSI_TASK_PENDING)
+ if (task->state == ISCSI_TASK_PENDING)
/*
* cmd never made it to the xmit thread, so we should not count
* the cmd in the sequencing
*/
conn->session->queued_cmdsn--;
else
- conn->session->tt->cleanup_task(conn, ctask);
+ conn->session->tt->cleanup_task(conn, task);
sc->result = err;
scsi_in(sc)->resid = scsi_in(sc)->length;
}
- if (conn->ctask == ctask)
- conn->ctask = NULL;
+ if (conn->task == task)
+ conn->task = NULL;
/* release ref from queuecommand */
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
}
static int iscsi_prep_mgmt_task(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask)
+ struct iscsi_task *task)
{
struct iscsi_session *session = conn->session;
- struct iscsi_hdr *hdr = (struct iscsi_hdr *)ctask->hdr;
+ struct iscsi_hdr *hdr = (struct iscsi_hdr *)task->hdr;
struct iscsi_nopout *nop = (struct iscsi_nopout *)hdr;
if (conn->session->state == ISCSI_STATE_LOGGING_OUT)
*/
nop->cmdsn = cpu_to_be32(session->cmdsn);
if (hdr->itt != RESERVED_ITT) {
- hdr->itt = build_itt(ctask->itt, session->age);
+ hdr->itt = build_itt(task->itt, session->age);
/*
* TODO: We always use immediate, so we never hit this.
* If we start to send tmfs or nops as non-immediate then
}
if (session->tt->init_task)
- session->tt->init_task(ctask);
+ session->tt->init_task(task);
if ((hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
session->state = ISCSI_STATE_LOGGING_OUT;
- list_move_tail(&ctask->running, &conn->mgmt_run_list);
+ list_move_tail(&task->running, &conn->mgmt_run_list);
debug_scsi("mgmtpdu [op 0x%x hdr->itt 0x%x datalen %d]\n",
hdr->opcode & ISCSI_OPCODE_MASK, hdr->itt,
- ctask->data_count);
+ task->data_count);
return 0;
}
-static struct iscsi_cmd_task *
+static struct iscsi_task *
__iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
char *data, uint32_t data_size)
{
struct iscsi_session *session = conn->session;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
if (session->state == ISCSI_STATE_TERMINATE)
return NULL;
* Same task can be used. Same ITT must be used.
* Note that login_task is preallocated at conn_create().
*/
- ctask = conn->login_ctask;
+ task = conn->login_task;
else {
BUG_ON(conn->c_stage == ISCSI_CONN_INITIAL_STAGE);
BUG_ON(conn->c_stage == ISCSI_CONN_STOPPED);
if (!__kfifo_get(session->cmdpool.queue,
- (void*)&ctask, sizeof(void*)))
+ (void*)&task, sizeof(void*)))
return NULL;
if ((hdr->opcode == (ISCSI_OP_NOOP_OUT | ISCSI_OP_IMMEDIATE)) &&
hdr->ttt == RESERVED_ITT) {
- conn->ping_ctask = ctask;
+ conn->ping_task = task;
conn->last_ping = jiffies;
}
}
* released by the lld when it has transmitted the task for
* pdus we do not expect a response for.
*/
- atomic_set(&ctask->refcount, 1);
- ctask->conn = conn;
- ctask->sc = NULL;
+ atomic_set(&task->refcount, 1);
+ task->conn = conn;
+ task->sc = NULL;
if (data_size) {
- memcpy(ctask->data, data, data_size);
- ctask->data_count = data_size;
+ memcpy(task->data, data, data_size);
+ task->data_count = data_size;
} else
- ctask->data_count = 0;
+ task->data_count = 0;
- memcpy(ctask->hdr, hdr, sizeof(struct iscsi_hdr));
- INIT_LIST_HEAD(&ctask->running);
- list_add_tail(&ctask->running, &conn->mgmtqueue);
+ memcpy(task->hdr, hdr, sizeof(struct iscsi_hdr));
+ INIT_LIST_HEAD(&task->running);
+ list_add_tail(&task->running, &conn->mgmtqueue);
if (session->tt->caps & CAP_DATA_PATH_OFFLOAD) {
- if (iscsi_prep_mgmt_task(conn, ctask)) {
- __iscsi_put_ctask(ctask);
+ if (iscsi_prep_mgmt_task(conn, task)) {
+ __iscsi_put_task(task);
return NULL;
}
- if (session->tt->xmit_task(ctask))
- ctask = NULL;
+ if (session->tt->xmit_task(task))
+ task = NULL;
} else
scsi_queue_work(conn->session->host, &conn->xmitwork);
- return ctask;
+ return task;
}
int iscsi_conn_send_pdu(struct iscsi_cls_conn *cls_conn, struct iscsi_hdr *hdr,
* iscsi_cmd_rsp - SCSI Command Response processing
* @conn: iscsi connection
* @hdr: iscsi header
- * @ctask: scsi command task
+ * @task: scsi command task
* @data: cmd data buffer
* @datalen: len of buffer
*
* iscsi_cmd_rsp sets up the scsi_cmnd fields based on the PDU and
- * then completes the command and ctask.
+ * then completes the command and task.
**/
static void iscsi_scsi_cmd_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
- struct iscsi_cmd_task *ctask, char *data,
+ struct iscsi_task *task, char *data,
int datalen)
{
struct iscsi_cmd_rsp *rhdr = (struct iscsi_cmd_rsp *)hdr;
struct iscsi_session *session = conn->session;
- struct scsi_cmnd *sc = ctask->sc;
+ struct scsi_cmnd *sc = task->sc;
iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
conn->exp_statsn = be32_to_cpu(rhdr->statsn) + 1;
}
out:
debug_scsi("done [sc %lx res %d itt 0x%x]\n",
- (long)sc, sc->result, ctask->itt);
+ (long)sc, sc->result, task->itt);
conn->scsirsp_pdus_cnt++;
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
}
static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
static void iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr)
{
struct iscsi_nopout hdr;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
- if (!rhdr && conn->ping_ctask)
+ if (!rhdr && conn->ping_task)
return;
memset(&hdr, 0, sizeof(struct iscsi_nopout));
} else
hdr.ttt = RESERVED_ITT;
- ctask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0);
- if (!ctask)
+ task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0);
+ if (!task)
iscsi_conn_printk(KERN_ERR, conn, "Could not send nopout\n");
}
{
struct iscsi_session *session = conn->session;
int opcode = hdr->opcode & ISCSI_OPCODE_MASK, rc = 0;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
uint32_t itt;
conn->last_recv = jiffies;
goto out;
}
- ctask = session->cmds[itt];
+ task = session->cmds[itt];
switch(opcode) {
case ISCSI_OP_SCSI_CMD_RSP:
- if (!ctask->sc) {
+ if (!task->sc) {
rc = ISCSI_ERR_NO_SCSI_CMD;
break;
}
- BUG_ON((void*)ctask != ctask->sc->SCp.ptr);
- iscsi_scsi_cmd_rsp(conn, hdr, ctask, data, datalen);
+ BUG_ON((void*)task != task->sc->SCp.ptr);
+ iscsi_scsi_cmd_rsp(conn, hdr, task, data, datalen);
break;
case ISCSI_OP_SCSI_DATA_IN:
- if (!ctask->sc) {
+ if (!task->sc) {
rc = ISCSI_ERR_NO_SCSI_CMD;
break;
}
- BUG_ON((void*)ctask != ctask->sc->SCp.ptr);
+ BUG_ON((void*)task != task->sc->SCp.ptr);
if (hdr->flags & ISCSI_FLAG_DATA_STATUS) {
conn->scsirsp_pdus_cnt++;
iscsi_update_cmdsn(session,
(struct iscsi_nopin*) hdr);
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
}
break;
case ISCSI_OP_R2T:
}
iscsi_tmf_rsp(conn, hdr);
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
break;
case ISCSI_OP_NOOP_IN:
iscsi_update_cmdsn(session, (struct iscsi_nopin*)hdr);
}
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
- if (conn->ping_ctask != ctask)
+ if (conn->ping_task != task)
/*
* If this is not in response to one of our
* nops then it must be from userspace.
*/
goto recv_pdu;
- __iscsi_put_ctask(ctask);
+
+ mod_timer(&conn->transport_timer, jiffies + conn->recv_timeout);
+ __iscsi_put_task(task);
break;
default:
rc = ISCSI_ERR_BAD_OPCODE;
recv_pdu:
if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen))
rc = ISCSI_ERR_CONN_FAILED;
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
return rc;
}
int iscsi_verify_itt(struct iscsi_conn *conn, itt_t itt)
{
struct iscsi_session *session = conn->session;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
uint32_t i;
if (itt == RESERVED_ITT)
return ISCSI_ERR_BAD_ITT;
}
- ctask = session->cmds[i];
- if (ctask->sc && ctask->sc->SCp.phase != session->age) {
+ task = session->cmds[i];
+ if (task->sc && task->sc->SCp.phase != session->age) {
iscsi_conn_printk(KERN_ERR, conn,
- "iscsi: ctask's session age %d, "
- "expected %d\n", ctask->sc->SCp.phase,
+ "iscsi: task's session age %d, "
+ "expected %d\n", task->sc->SCp.phase,
session->age);
return ISCSI_ERR_SESSION_FAILED;
}
}
EXPORT_SYMBOL_GPL(iscsi_verify_itt);
-struct iscsi_cmd_task *
+struct iscsi_task *
iscsi_itt_to_ctask(struct iscsi_conn *conn, itt_t itt)
{
struct iscsi_session *session = conn->session;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
uint32_t i;
if (iscsi_verify_itt(conn, itt))
if (i >= session->cmds_max)
return NULL;
- ctask = session->cmds[i];
- if (!ctask->sc)
+ task = session->cmds[i];
+ if (!task->sc)
return NULL;
- if (ctask->sc->SCp.phase != session->age)
+ if (task->sc->SCp.phase != session->age)
return NULL;
- return ctask;
+ return task;
}
EXPORT_SYMBOL_GPL(iscsi_itt_to_ctask);
return 0;
}
-static int iscsi_xmit_ctask(struct iscsi_conn *conn)
+static int iscsi_xmit_task(struct iscsi_conn *conn)
{
- struct iscsi_cmd_task *ctask = conn->ctask;
+ struct iscsi_task *task = conn->task;
int rc;
- __iscsi_get_ctask(ctask);
+ __iscsi_get_task(task);
spin_unlock_bh(&conn->session->lock);
- rc = conn->session->tt->xmit_task(ctask);
+ rc = conn->session->tt->xmit_task(task);
spin_lock_bh(&conn->session->lock);
- __iscsi_put_ctask(ctask);
+ __iscsi_put_task(task);
if (!rc)
- /* done with this ctask */
- conn->ctask = NULL;
+ /* done with this task */
+ conn->task = NULL;
return rc;
}
/**
- * iscsi_requeue_ctask - requeue ctask to run from session workqueue
- * @ctask: ctask to requeue
+ * iscsi_requeue_task - requeue task to run from session workqueue
+ * @task: task to requeue
*
- * LLDs that need to run a ctask from the session workqueue should call
+ * LLDs that need to run a task from the session workqueue should call
* this. The session lock must be held. This should only be called
* by software drivers.
*/
-void iscsi_requeue_ctask(struct iscsi_cmd_task *ctask)
+void iscsi_requeue_task(struct iscsi_task *task)
{
- struct iscsi_conn *conn = ctask->conn;
+ struct iscsi_conn *conn = task->conn;
- list_move_tail(&ctask->running, &conn->requeue);
+ list_move_tail(&task->running, &conn->requeue);
scsi_queue_work(conn->session->host, &conn->xmitwork);
}
-EXPORT_SYMBOL_GPL(iscsi_requeue_ctask);
+EXPORT_SYMBOL_GPL(iscsi_requeue_task);
/**
* iscsi_data_xmit - xmit any command into the scheduled connection
return -ENODATA;
}
- if (conn->ctask) {
- rc = iscsi_xmit_ctask(conn);
+ if (conn->task) {
+ rc = iscsi_xmit_task(conn);
if (rc)
goto again;
}
*/
check_mgmt:
while (!list_empty(&conn->mgmtqueue)) {
- conn->ctask = list_entry(conn->mgmtqueue.next,
- struct iscsi_cmd_task, running);
- if (iscsi_prep_mgmt_task(conn, conn->ctask)) {
- __iscsi_put_ctask(conn->ctask);
- conn->ctask = NULL;
+ conn->task = list_entry(conn->mgmtqueue.next,
+ struct iscsi_task, running);
+ if (iscsi_prep_mgmt_task(conn, conn->task)) {
+ __iscsi_put_task(conn->task);
+ conn->task = NULL;
continue;
}
- rc = iscsi_xmit_ctask(conn);
+ rc = iscsi_xmit_task(conn);
if (rc)
goto again;
}
if (conn->tmf_state == TMF_QUEUED)
break;
- conn->ctask = list_entry(conn->xmitqueue.next,
- struct iscsi_cmd_task, running);
+ conn->task = list_entry(conn->xmitqueue.next,
+ struct iscsi_task, running);
if (conn->session->state == ISCSI_STATE_LOGGING_OUT) {
- fail_command(conn, conn->ctask, DID_IMM_RETRY << 16);
+ fail_command(conn, conn->task, DID_IMM_RETRY << 16);
continue;
}
- if (iscsi_prep_scsi_cmd_pdu(conn->ctask)) {
- fail_command(conn, conn->ctask, DID_ABORT << 16);
+ if (iscsi_prep_scsi_cmd_pdu(conn->task)) {
+ fail_command(conn, conn->task, DID_ABORT << 16);
continue;
}
- rc = iscsi_xmit_ctask(conn);
+ rc = iscsi_xmit_task(conn);
if (rc)
goto again;
/*
- * we could continuously get new ctask requests so
+ * we could continuously get new task requests so
* we need to check the mgmt queue for nops that need to
* be sent to aviod starvation
*/
if (conn->session->state == ISCSI_STATE_LOGGING_OUT)
break;
- conn->ctask = list_entry(conn->requeue.next,
- struct iscsi_cmd_task, running);
- conn->ctask->state = ISCSI_TASK_RUNNING;
+ conn->task = list_entry(conn->requeue.next,
+ struct iscsi_task, running);
+ conn->task->state = ISCSI_TASK_RUNNING;
list_move_tail(conn->requeue.next, &conn->run_list);
- rc = iscsi_xmit_ctask(conn);
+ rc = iscsi_xmit_task(conn);
if (rc)
goto again;
if (!list_empty(&conn->mgmtqueue))
int reason = 0;
struct iscsi_session *session;
struct iscsi_conn *conn;
- struct iscsi_cmd_task *ctask = NULL;
+ struct iscsi_task *task = NULL;
sc->scsi_done = done;
sc->result = 0;
goto reject;
}
- if (!__kfifo_get(session->cmdpool.queue, (void*)&ctask,
+ if (!__kfifo_get(session->cmdpool.queue, (void*)&task,
sizeof(void*))) {
reason = FAILURE_OOM;
goto reject;
}
sc->SCp.phase = session->age;
- sc->SCp.ptr = (char *)ctask;
+ sc->SCp.ptr = (char *)task;
- atomic_set(&ctask->refcount, 1);
- ctask->state = ISCSI_TASK_PENDING;
- ctask->conn = conn;
- ctask->sc = sc;
- INIT_LIST_HEAD(&ctask->running);
- list_add_tail(&ctask->running, &conn->xmitqueue);
+ atomic_set(&task->refcount, 1);
+ task->state = ISCSI_TASK_PENDING;
+ task->conn = conn;
+ task->sc = sc;
+ INIT_LIST_HEAD(&task->running);
+ list_add_tail(&task->running, &conn->xmitqueue);
if (session->tt->caps & CAP_DATA_PATH_OFFLOAD) {
- if (iscsi_prep_scsi_cmd_pdu(ctask)) {
+ if (iscsi_prep_scsi_cmd_pdu(task)) {
sc->result = DID_ABORT << 16;
sc->scsi_done = NULL;
- iscsi_complete_command(ctask);
+ iscsi_complete_command(task);
goto fault;
}
- if (session->tt->xmit_task(ctask)) {
+ if (session->tt->xmit_task(task)) {
sc->scsi_done = NULL;
- iscsi_complete_command(ctask);
+ iscsi_complete_command(task);
reason = FAILURE_SESSION_NOT_READY;
goto reject;
}
spin_unlock(&session->lock);
}
-static int iscsi_exec_ctask_mgmt_fn(struct iscsi_conn *conn,
+static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn,
struct iscsi_tm *hdr, int age,
int timeout)
{
struct iscsi_session *session = conn->session;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
- ctask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr,
+ task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr,
NULL, 0);
- if (!ctask) {
+ if (!task) {
spin_unlock_bh(&session->lock);
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
spin_lock_bh(&session->lock);
mutex_lock(&session->eh_mutex);
spin_lock_bh(&session->lock);
- /* if the session drops it will clean up the ctask */
+ /* if the session drops it will clean up the task */
if (age != session->age ||
session->state != ISCSI_STATE_LOGGED_IN)
return -ENOTCONN;
static void fail_all_commands(struct iscsi_conn *conn, unsigned lun,
int error)
{
- struct iscsi_cmd_task *ctask, *tmp;
+ struct iscsi_task *task, *tmp;
- if (conn->ctask && (conn->ctask->sc->device->lun == lun || lun == -1))
- conn->ctask = NULL;
+ if (conn->task && (conn->task->sc->device->lun == lun || lun == -1))
+ conn->task = NULL;
/* flush pending */
- list_for_each_entry_safe(ctask, tmp, &conn->xmitqueue, running) {
- if (lun == ctask->sc->device->lun || lun == -1) {
+ list_for_each_entry_safe(task, tmp, &conn->xmitqueue, running) {
+ if (lun == task->sc->device->lun || lun == -1) {
debug_scsi("failing pending sc %p itt 0x%x\n",
- ctask->sc, ctask->itt);
- fail_command(conn, ctask, error << 16);
+ task->sc, task->itt);
+ fail_command(conn, task, error << 16);
}
}
- list_for_each_entry_safe(ctask, tmp, &conn->requeue, running) {
- if (lun == ctask->sc->device->lun || lun == -1) {
+ list_for_each_entry_safe(task, tmp, &conn->requeue, running) {
+ if (lun == task->sc->device->lun || lun == -1) {
debug_scsi("failing requeued sc %p itt 0x%x\n",
- ctask->sc, ctask->itt);
- fail_command(conn, ctask, error << 16);
+ task->sc, task->itt);
+ fail_command(conn, task, error << 16);
}
}
/* fail all other running */
- list_for_each_entry_safe(ctask, tmp, &conn->run_list, running) {
- if (lun == ctask->sc->device->lun || lun == -1) {
+ list_for_each_entry_safe(task, tmp, &conn->run_list, running) {
+ if (lun == task->sc->device->lun || lun == -1) {
debug_scsi("failing in progress sc %p itt 0x%x\n",
- ctask->sc, ctask->itt);
- fail_command(conn, ctask, DID_BUS_BUSY << 16);
+ task->sc, task->itt);
+ fail_command(conn, task, DID_BUS_BUSY << 16);
}
}
}
jiffies))
rc = EH_RESET_TIMER;
/* if in the middle of checking the transport then give us more time */
- if (conn->ping_ctask)
+ if (conn->ping_task)
rc = EH_RESET_TIMER;
done:
spin_unlock(&session->lock);
recv_timeout *= HZ;
last_recv = conn->last_recv;
- if (conn->ping_ctask &&
+ if (conn->ping_task &&
time_before_eq(conn->last_ping + (conn->ping_timeout * HZ),
jiffies)) {
iscsi_conn_printk(KERN_ERR, conn, "ping timeout of %d secs "
spin_unlock(&session->lock);
}
-static void iscsi_prep_abort_ctask_pdu(struct iscsi_cmd_task *ctask,
+static void iscsi_prep_abort_task_pdu(struct iscsi_task *task,
struct iscsi_tm *hdr)
{
memset(hdr, 0, sizeof(*hdr));
hdr->opcode = ISCSI_OP_SCSI_TMFUNC | ISCSI_OP_IMMEDIATE;
hdr->flags = ISCSI_TM_FUNC_ABORT_TASK & ISCSI_FLAG_TM_FUNC_MASK;
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
- memcpy(hdr->lun, ctask->hdr->lun, sizeof(hdr->lun));
- hdr->rtt = ctask->hdr->itt;
- hdr->refcmdsn = ctask->hdr->cmdsn;
+ memcpy(hdr->lun, task->hdr->lun, sizeof(hdr->lun));
+ hdr->rtt = task->hdr->itt;
+ hdr->refcmdsn = task->hdr->cmdsn;
}
int iscsi_eh_abort(struct scsi_cmnd *sc)
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
struct iscsi_conn *conn;
- struct iscsi_cmd_task *ctask;
+ struct iscsi_task *task;
struct iscsi_tm *hdr;
int rc, age;
conn->eh_abort_cnt++;
age = session->age;
- ctask = (struct iscsi_cmd_task *)sc->SCp.ptr;
- debug_scsi("aborting [sc %p itt 0x%x]\n", sc, ctask->itt);
+ task = (struct iscsi_task *)sc->SCp.ptr;
+ debug_scsi("aborting [sc %p itt 0x%x]\n", sc, task->itt);
- /* ctask completed before time out */
- if (!ctask->sc) {
+ /* task completed before time out */
+ if (!task->sc) {
debug_scsi("sc completed while abort in progress\n");
goto success;
}
- if (ctask->state == ISCSI_TASK_PENDING) {
- fail_command(conn, ctask, DID_ABORT << 16);
+ if (task->state == ISCSI_TASK_PENDING) {
+ fail_command(conn, task, DID_ABORT << 16);
goto success;
}
conn->tmf_state = TMF_QUEUED;
hdr = &conn->tmhdr;
- iscsi_prep_abort_ctask_pdu(ctask, hdr);
+ iscsi_prep_abort_task_pdu(task, hdr);
- if (iscsi_exec_ctask_mgmt_fn(conn, hdr, age, session->abort_timeout)) {
+ if (iscsi_exec_task_mgmt_fn(conn, hdr, age, session->abort_timeout)) {
rc = FAILED;
goto failed;
}
spin_unlock_bh(&session->lock);
iscsi_suspend_tx(conn);
/*
- * clean up ctask if aborted. grab the recv lock as a writer
+ * clean up task if aborted. grab the recv lock as a writer
*/
write_lock_bh(conn->recv_lock);
spin_lock(&session->lock);
- fail_command(conn, ctask, DID_ABORT << 16);
+ fail_command(conn, task, DID_ABORT << 16);
conn->tmf_state = TMF_INITIAL;
spin_unlock(&session->lock);
write_unlock_bh(conn->recv_lock);
case TMF_NOT_FOUND:
if (!sc->SCp.ptr) {
conn->tmf_state = TMF_INITIAL;
- /* ctask completed before tmf abort response */
+ /* task completed before tmf abort response */
debug_scsi("sc completed while abort in progress\n");
goto success;
}
success:
spin_unlock_bh(&session->lock);
success_unlocked:
- debug_scsi("abort success [sc %lx itt 0x%x]\n", (long)sc, ctask->itt);
+ debug_scsi("abort success [sc %lx itt 0x%x]\n", (long)sc, task->itt);
mutex_unlock(&session->eh_mutex);
return SUCCESS;
spin_unlock_bh(&session->lock);
failed_unlocked:
debug_scsi("abort failed [sc %p itt 0x%x]\n", sc,
- ctask ? ctask->itt : 0);
+ task ? task->itt : 0);
mutex_unlock(&session->eh_mutex);
return FAILED;
}
hdr = &conn->tmhdr;
iscsi_prep_lun_reset_pdu(sc, hdr);
- if (iscsi_exec_ctask_mgmt_fn(conn, hdr, session->age,
+ if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age,
session->lu_reset_timeout)) {
rc = FAILED;
goto unlock;
* @iscsit: iscsi transport template
* @shost: scsi host
* @cmds_max: session can queue
- * @cmd_ctask_size: LLD ctask private data size
+ * @cmd_task_size: LLD task private data size
* @initial_cmdsn: initial CmdSN
*
* This can be used by software iscsi_transports that allocate
*/
struct iscsi_cls_session *
iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost,
- uint16_t scsi_cmds_max, int cmd_ctask_size,
+ uint16_t scsi_cmds_max, int cmd_task_size,
uint32_t initial_cmdsn)
{
struct iscsi_session *session;
int cmd_i, cmds_max;
/*
- * The iscsi layer needs some ctasks for nop handling and tmfs.
+ * The iscsi layer needs some tasks for nop handling and tmfs.
*/
if (scsi_cmds_max < 1)
scsi_cmds_max = ISCSI_MGMT_CMDS_MAX;
/* initialize SCSI PDU commands pool */
if (iscsi_pool_init(&session->cmdpool, session->cmds_max,
(void***)&session->cmds,
- cmd_ctask_size + sizeof(struct iscsi_cmd_task)))
+ cmd_task_size + sizeof(struct iscsi_task)))
goto cmdpool_alloc_fail;
/* pre-format cmds pool with ITT */
for (cmd_i = 0; cmd_i < session->cmds_max; cmd_i++) {
- struct iscsi_cmd_task *ctask = session->cmds[cmd_i];
+ struct iscsi_task *task = session->cmds[cmd_i];
- if (cmd_ctask_size)
- ctask->dd_data = &ctask[1];
- ctask->itt = cmd_i;
- INIT_LIST_HEAD(&ctask->running);
+ if (cmd_task_size)
+ task->dd_data = &task[1];
+ task->itt = cmd_i;
+ INIT_LIST_HEAD(&task->running);
}
if (!try_module_get(iscsit->owner))
INIT_LIST_HEAD(&conn->requeue);
INIT_WORK(&conn->xmitwork, iscsi_xmitworker);
- /* allocate login_ctask used for the login/text sequences */
+ /* allocate login_task used for the login/text sequences */
spin_lock_bh(&session->lock);
if (!__kfifo_get(session->cmdpool.queue,
- (void*)&conn->login_ctask,
+ (void*)&conn->login_task,
sizeof(void*))) {
spin_unlock_bh(&session->lock);
- goto login_ctask_alloc_fail;
+ goto login_task_alloc_fail;
}
spin_unlock_bh(&session->lock);
data = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN, GFP_KERNEL);
if (!data)
- goto login_ctask_data_alloc_fail;
- conn->login_ctask->data = conn->data = data;
+ goto login_task_data_alloc_fail;
+ conn->login_task->data = conn->data = data;
init_timer(&conn->tmf_timer);
init_waitqueue_head(&conn->ehwait);
return cls_conn;
-login_ctask_data_alloc_fail:
- __kfifo_put(session->cmdpool.queue, (void*)&conn->login_ctask,
+login_task_data_alloc_fail:
+ __kfifo_put(session->cmdpool.queue, (void*)&conn->login_task,
sizeof(void*));
-login_ctask_alloc_fail:
+login_task_alloc_fail:
iscsi_destroy_conn(cls_conn);
return NULL;
}
spin_lock_bh(&session->lock);
kfree(conn->data);
kfree(conn->persistent_address);
- __kfifo_put(session->cmdpool.queue, (void*)&conn->login_ctask,
+ __kfifo_put(session->cmdpool.queue, (void*)&conn->login_task,
sizeof(void*));
if (session->leadconn == conn)
session->leadconn = NULL;
static void
flush_control_queues(struct iscsi_session *session, struct iscsi_conn *conn)
{
- struct iscsi_cmd_task *ctask, *tmp;
+ struct iscsi_task *task, *tmp;
/* handle pending */
- list_for_each_entry_safe(ctask, tmp, &conn->mgmtqueue, running) {
- debug_scsi("flushing pending mgmt ctask itt 0x%x\n", ctask->itt);
- /* release ref from prep ctask */
- __iscsi_put_ctask(ctask);
+ list_for_each_entry_safe(task, tmp, &conn->mgmtqueue, running) {
+ debug_scsi("flushing pending mgmt task itt 0x%x\n", task->itt);
+ /* release ref from prep task */
+ __iscsi_put_task(task);
}
/* handle running */
- list_for_each_entry_safe(ctask, tmp, &conn->mgmt_run_list, running) {
- debug_scsi("flushing running mgmt ctask itt 0x%x\n", ctask->itt);
- /* release ref from prep ctask */
- __iscsi_put_ctask(ctask);
+ list_for_each_entry_safe(task, tmp, &conn->mgmt_run_list, running) {
+ debug_scsi("flushing running mgmt task itt 0x%x\n", task->itt);
+ /* release ref from prep task */
+ __iscsi_put_task(task);
}
- conn->ctask = NULL;
+ conn->task = NULL;
}
static void iscsi_start_session_recovery(struct iscsi_session *session,
/*
* When this is called for the in_login state, we only want to clean
- * up the login ctask and connection. We do not need to block and set
+ * up the login task and connection. We do not need to block and set
* the recovery state again
*/
if (flag == STOP_CONN_TERM)
projects / linux-2.6 / commitdiff