#include <linux/types.h>
#include <linux/kfifo.h>
#include <linux/delay.h>
+#include <linux/log2.h>
#include <asm/unaligned.h>
#include <net/tcp.h>
#include <scsi/scsi_cmnd.h>
rc = iscsi_add_hdr(ctask, 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, conn->id, session->age);
- hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
- hdr->cmdsn = cpu_to_be32(session->cmdsn);
- session->cmdsn++;
- hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
- memcpy(hdr->cdb, sc->cmnd, sc->cmd_len);
+ 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, conn->id, session->age);
+ hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
+ hdr->cmdsn = cpu_to_be32(session->cmdsn);
+ session->cmdsn++;
+ hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
+ memcpy(hdr->cdb, sc->cmnd, sc->cmd_len);
if (sc->cmd_len < MAX_COMMAND_SIZE)
memset(&hdr->cdb[sc->cmd_len], 0,
MAX_COMMAND_SIZE - sc->cmd_len);
- ctask->data_count = 0;
ctask->imm_count = 0;
if (sc->sc_data_direction == DMA_TO_DEVICE) {
hdr->flags |= ISCSI_FLAG_CMD_WRITE;
else
ctask->imm_count = min(scsi_bufflen(sc),
conn->max_xmit_dlength);
- hton24(ctask->hdr->dlength, ctask->imm_count);
+ hton24(hdr->dlength, ctask->imm_count);
} else
- zero_data(ctask->hdr->dlength);
+ zero_data(hdr->dlength);
if (!session->initial_r2t_en) {
ctask->unsol_count = min((session->first_burst),
if (!ctask->unsol_count)
/* No unsolicit Data-Out's */
- ctask->hdr->flags |= ISCSI_FLAG_CMD_FINAL;
+ hdr->flags |= ISCSI_FLAG_CMD_FINAL;
} else {
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
zero_data(hdr->dlength);
WARN_ON(hdrlength >= 256);
hdr->hlength = hdrlength & 0xFF;
- conn->scsicmd_pdus_cnt++;
+ if (conn->session->tt->init_cmd_task(conn->ctask))
+ return EIO;
- debug_scsi("iscsi prep [%s cid %d sc %p cdb 0x%x itt 0x%x len %d "
+ conn->scsicmd_pdus_cnt++;
+ debug_scsi("iscsi prep [%s cid %d sc %p cdb 0x%x itt 0x%x len %d "
"cmdsn %d win %d]\n",
- sc->sc_data_direction == DMA_TO_DEVICE ? "write" : "read",
+ sc->sc_data_direction == DMA_TO_DEVICE ? "write" : "read",
conn->id, sc, sc->cmnd[0], ctask->itt, scsi_bufflen(sc),
- session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
+ session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
return 0;
}
*/
static void iscsi_complete_command(struct iscsi_cmd_task *ctask)
{
- struct iscsi_session *session = ctask->conn->session;
+ struct iscsi_conn *conn = ctask->conn;
+ struct iscsi_session *session = conn->session;
struct scsi_cmnd *sc = ctask->sc;
ctask->state = ISCSI_TASK_COMPLETED;
ctask->sc = NULL;
/* SCSI eh reuses commands to verify us */
sc->SCp.ptr = NULL;
+ if (conn->ctask == ctask)
+ conn->ctask = NULL;
list_del_init(&ctask->running);
__kfifo_put(session->cmdpool.queue, (void*)&ctask, sizeof(void*));
sc->scsi_done(sc);
conn->ctask = list_entry(conn->xmitqueue.next,
struct iscsi_cmd_task, running);
if (conn->session->state == ISCSI_STATE_LOGGING_OUT) {
- fail_command(conn, conn->ctask, DID_NO_CONNECT << 16);
+ fail_command(conn, conn->ctask, DID_IMM_RETRY << 16);
continue;
}
if (iscsi_prep_scsi_cmd_pdu(conn->ctask)) {
fail_command(conn, conn->ctask, DID_ABORT << 16);
continue;
}
- conn->session->tt->init_cmd_task(conn->ctask);
+
conn->ctask->state = ISCSI_TASK_RUNNING;
list_move_tail(conn->xmitqueue.next, &conn->run_list);
rc = iscsi_xmit_ctask(conn);
sc->SCp.ptr = NULL;
host = sc->device->host;
- session = iscsi_hostdata(host->hostdata);
+ spin_unlock(host->host_lock);
+ session = iscsi_hostdata(host->hostdata);
spin_lock(&session->lock);
/*
* be entering our queuecommand while a block is starting
* up because the block code is not locked)
*/
- if (session->state == ISCSI_STATE_IN_RECOVERY) {
+ switch (session->state) {
+ case ISCSI_STATE_IN_RECOVERY:
reason = FAILURE_SESSION_IN_RECOVERY;
goto reject;
- }
-
- switch (session->state) {
+ case ISCSI_STATE_LOGGING_OUT:
+ reason = FAILURE_SESSION_LOGGING_OUT;
+ goto reject;
case ISCSI_STATE_RECOVERY_FAILED:
reason = FAILURE_SESSION_RECOVERY_TIMEOUT;
break;
case ISCSI_STATE_TERMINATE:
reason = FAILURE_SESSION_TERMINATE;
break;
- case ISCSI_STATE_LOGGING_OUT:
- reason = FAILURE_SESSION_LOGGING_OUT;
- break;
default:
reason = FAILURE_SESSION_FREED;
}
spin_unlock(&session->lock);
scsi_queue_work(host, &conn->xmitwork);
+ spin_lock(host->host_lock);
return 0;
reject:
spin_unlock(&session->lock);
debug_scsi("cmd 0x%x rejected (%d)\n", sc->cmnd[0], reason);
+ spin_lock(host->host_lock);
return SCSI_MLQUEUE_HOST_BUSY;
fault:
sc->result = (DID_NO_CONNECT << 16);
scsi_set_resid(sc, scsi_bufflen(sc));
sc->scsi_done(sc);
+ spin_lock(host->host_lock);
return 0;
}
EXPORT_SYMBOL_GPL(iscsi_queuecommand);
qdepth = ISCSI_DEF_CMD_PER_LUN;
}
- if (cmds_max < 2 || (cmds_max & (cmds_max - 1)) ||
+ if (!is_power_of_2(cmds_max) ||
cmds_max >= ISCSI_MGMT_ITT_OFFSET) {
if (cmds_max != 0)
printk(KERN_ERR "iscsi: invalid can_queue of %d. "
session->host = shost;
session->state = ISCSI_STATE_FREE;
session->fast_abort = 1;
+ session->lu_reset_timeout = 15;
+ session->abort_timeout = 10;
session->mgmtpool_max = ISCSI_MGMT_CMDS_MAX;
session->cmds_max = cmds_max;
session->queued_cmdsn = session->cmdsn = initial_cmdsn;
projects / firefly-linux-kernel-4.4.55.git / blobdiff