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yaml
---
r: 101525
b: refs/heads/master
c: 2261ec3
h: refs/heads/master
i:
  101523: dc453c3
v: v3
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Mike Christie authored and James Bottomley committed Jul 12, 2008
1 parent b9345bb commit 525c9f0
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Showing 5 changed files with 204 additions and 203 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 135a8ad4e09309d36dcb8b5c7f55db0b6a15b2d6
refs/heads/master: 2261ec3d686e35c1a6088ab7f00a1d02b528b994
114 changes: 57 additions & 57 deletions trunk/drivers/infiniband/ulp/iser/iscsi_iser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -124,33 +124,33 @@ iscsi_iser_recv(struct iscsi_conn *conn,


/**
* iscsi_iser_task_init - Initialize ctask
* @ctask: iscsi ctask
* iscsi_iser_task_init - Initialize task
* @task: iscsi task
*
* Initialize the ctask for the scsi command or mgmt command.
* Initialize the task for the scsi command or mgmt command.
*/
static int
iscsi_iser_task_init(struct iscsi_cmd_task *ctask)
iscsi_iser_task_init(struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = ctask->conn->dd_data;
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_conn *iser_conn = task->conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;

/* mgmt ctask */
if (!ctask->sc) {
iser_ctask->desc.data = ctask->data;
/* mgmt task */
if (!task->sc) {
iser_task->desc.data = task->data;
return 0;
}

iser_ctask->command_sent = 0;
iser_ctask->iser_conn = iser_conn;
iser_ctask_rdma_init(iser_ctask);
iser_task->command_sent = 0;
iser_task->iser_conn = iser_conn;
iser_task_rdma_init(iser_task);
return 0;
}

/**
* iscsi_iser_mtask_xmit - xmit management(immediate) ctask
* iscsi_iser_mtask_xmit - xmit management(immediate) task
* @conn: iscsi connection
* @ctask: ctask management ctask
* @task: task management task
*
* Notes:
* The function can return -EAGAIN in which case caller must
Expand All @@ -159,19 +159,19 @@ iscsi_iser_task_init(struct iscsi_cmd_task *ctask)
*
**/
static int
iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
{
int error = 0;

debug_scsi("ctask deq [cid %d itt 0x%x]\n", conn->id, ctask->itt);
debug_scsi("task deq [cid %d itt 0x%x]\n", conn->id, task->itt);

error = iser_send_control(conn, ctask);
error = iser_send_control(conn, task);

/* since iser xmits control with zero copy, ctasks can not be recycled
/* since iser xmits control with zero copy, tasks can not be recycled
* right after sending them.
* The recycling scheme is based on whether a response is expected
* - if yes, the ctask is recycled at iscsi_complete_pdu
* - if no, the ctask is recycled at iser_snd_completion
* - if yes, the task is recycled at iscsi_complete_pdu
* - if no, the task is recycled at iser_snd_completion
*/
if (error && error != -ENOBUFS)
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
Expand All @@ -181,65 +181,65 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)

static int
iscsi_iser_task_xmit_unsol_data(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask)
struct iscsi_task *task)
{
struct iscsi_data hdr;
int error = 0;

/* Send data-out PDUs while there's still unsolicited data to send */
while (ctask->unsol_count > 0) {
iscsi_prep_unsolicit_data_pdu(ctask, &hdr);
while (task->unsol_count > 0) {
iscsi_prep_unsolicit_data_pdu(task, &hdr);
debug_scsi("Sending data-out: itt 0x%x, data count %d\n",
hdr.itt, ctask->data_count);
hdr.itt, task->data_count);

/* the buffer description has been passed with the command */
/* Send the command */
error = iser_send_data_out(conn, ctask, &hdr);
error = iser_send_data_out(conn, task, &hdr);
if (error) {
ctask->unsol_datasn--;
task->unsol_datasn--;
goto iscsi_iser_task_xmit_unsol_data_exit;
}
ctask->unsol_count -= ctask->data_count;
task->unsol_count -= task->data_count;
debug_scsi("Need to send %d more as data-out PDUs\n",
ctask->unsol_count);
task->unsol_count);
}

iscsi_iser_task_xmit_unsol_data_exit:
return error;
}

static int
iscsi_iser_task_xmit(struct iscsi_cmd_task *ctask)
iscsi_iser_task_xmit(struct iscsi_task *task)
{
struct iscsi_conn *conn = ctask->conn;
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_conn *conn = task->conn;
struct iscsi_iser_task *iser_task = task->dd_data;
int error = 0;

if (!ctask->sc)
return iscsi_iser_mtask_xmit(conn, ctask);
if (!task->sc)
return iscsi_iser_mtask_xmit(conn, task);

if (ctask->sc->sc_data_direction == DMA_TO_DEVICE) {
BUG_ON(scsi_bufflen(ctask->sc) == 0);
if (task->sc->sc_data_direction == DMA_TO_DEVICE) {
BUG_ON(scsi_bufflen(task->sc) == 0);

debug_scsi("cmd [itt %x total %d imm %d unsol_data %d\n",
ctask->itt, scsi_bufflen(ctask->sc),
ctask->imm_count, ctask->unsol_count);
task->itt, scsi_bufflen(task->sc),
task->imm_count, task->unsol_count);
}

debug_scsi("ctask deq [cid %d itt 0x%x]\n",
conn->id, ctask->itt);
debug_scsi("task deq [cid %d itt 0x%x]\n",
conn->id, task->itt);

/* Send the cmd PDU */
if (!iser_ctask->command_sent) {
error = iser_send_command(conn, ctask);
if (!iser_task->command_sent) {
error = iser_send_command(conn, task);
if (error)
goto iscsi_iser_task_xmit_exit;
iser_ctask->command_sent = 1;
iser_task->command_sent = 1;
}

/* Send unsolicited data-out PDU(s) if necessary */
if (ctask->unsol_count)
error = iscsi_iser_task_xmit_unsol_data(conn, ctask);
if (task->unsol_count)
error = iscsi_iser_task_xmit_unsol_data(conn, task);

iscsi_iser_task_xmit_exit:
if (error && error != -ENOBUFS)
Expand All @@ -248,17 +248,17 @@ iscsi_iser_task_xmit(struct iscsi_cmd_task *ctask)
}

static void
iscsi_iser_cleanup_task(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
iscsi_iser_cleanup_task(struct iscsi_conn *conn, struct iscsi_task *task)
{
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;

/* mgmt tasks do not need special cleanup */
if (!ctask->sc)
if (!task->sc)
return;

if (iser_ctask->status == ISER_TASK_STATUS_STARTED) {
iser_ctask->status = ISER_TASK_STATUS_COMPLETED;
iser_ctask_rdma_finalize(iser_ctask);
if (iser_task->status == ISER_TASK_STATUS_STARTED) {
iser_task->status = ISER_TASK_STATUS_COMPLETED;
iser_task_rdma_finalize(iser_task);
}
}

Expand Down Expand Up @@ -408,8 +408,8 @@ iscsi_iser_session_create(struct Scsi_Host *shost,
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
int i;
struct iscsi_cmd_task *ctask;
struct iscsi_iser_cmd_task *iser_ctask;
struct iscsi_task *task;
struct iscsi_iser_task *iser_task;

if (shost) {
printk(KERN_ERR "iscsi_tcp: invalid shost %d.\n",
Expand All @@ -436,7 +436,7 @@ iscsi_iser_session_create(struct Scsi_Host *shost,
*/
cls_session = iscsi_session_setup(&iscsi_iser_transport, shost,
ISCSI_DEF_XMIT_CMDS_MAX,
sizeof(struct iscsi_iser_cmd_task),
sizeof(struct iscsi_iser_task),
initial_cmdsn);
if (!cls_session)
goto remove_host;
Expand All @@ -445,10 +445,10 @@ iscsi_iser_session_create(struct Scsi_Host *shost,
shost->can_queue = session->scsi_cmds_max;
/* libiscsi setup itts, data and pool so just set desc fields */
for (i = 0; i < session->cmds_max; i++) {
ctask = session->cmds[i];
iser_ctask = ctask->dd_data;
ctask->hdr = (struct iscsi_cmd *)&iser_ctask->desc.iscsi_header;
ctask->hdr_max = sizeof(iser_ctask->desc.iscsi_header);
task = session->cmds[i];
iser_task = task->dd_data;
task->hdr = (struct iscsi_cmd *)&iser_task->desc.iscsi_header;
task->hdr_max = sizeof(iser_task->desc.iscsi_header);
}
return cls_session;

Expand Down
24 changes: 12 additions & 12 deletions trunk/drivers/infiniband/ulp/iser/iscsi_iser.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -173,7 +173,7 @@ struct iser_data_buf {
/* fwd declarations */
struct iser_device;
struct iscsi_iser_conn;
struct iscsi_iser_cmd_task;
struct iscsi_iser_task;

struct iser_mem_reg {
u32 lkey;
Expand All @@ -197,7 +197,7 @@ struct iser_regd_buf {
#define MAX_REGD_BUF_VECTOR_LEN 2

struct iser_dto {
struct iscsi_iser_cmd_task *ctask;
struct iscsi_iser_task *task;
struct iser_conn *ib_conn;
int notify_enable;

Expand Down Expand Up @@ -265,7 +265,7 @@ struct iscsi_iser_conn {
rwlock_t lock;
};

struct iscsi_iser_cmd_task {
struct iscsi_iser_task {
struct iser_desc desc;
struct iscsi_iser_conn *iser_conn;
enum iser_task_status status;
Expand Down Expand Up @@ -299,13 +299,13 @@ extern int iser_debug_level;
int iser_conn_set_full_featured_mode(struct iscsi_conn *conn);

int iser_send_control(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask);
struct iscsi_task *task);

int iser_send_command(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask);
struct iscsi_task *task);

int iser_send_data_out(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask,
struct iscsi_task *task,
struct iscsi_data *hdr);

void iscsi_iser_recv(struct iscsi_conn *conn,
Expand All @@ -326,9 +326,9 @@ void iser_rcv_completion(struct iser_desc *desc,

void iser_snd_completion(struct iser_desc *desc);

void iser_ctask_rdma_init(struct iscsi_iser_cmd_task *ctask);
void iser_task_rdma_init(struct iscsi_iser_task *task);

void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *ctask);
void iser_task_rdma_finalize(struct iscsi_iser_task *task);

void iser_dto_buffs_release(struct iser_dto *dto);

Expand All @@ -338,10 +338,10 @@ void iser_reg_single(struct iser_device *device,
struct iser_regd_buf *regd_buf,
enum dma_data_direction direction);

void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *ctask,
void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *task,
enum iser_data_dir cmd_dir);

int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *ctask,
int iser_reg_rdma_mem(struct iscsi_iser_task *task,
enum iser_data_dir cmd_dir);

int iser_connect(struct iser_conn *ib_conn,
Expand All @@ -361,10 +361,10 @@ int iser_post_send(struct iser_desc *tx_desc);
int iser_conn_state_comp(struct iser_conn *ib_conn,
enum iser_ib_conn_state comp);

int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
enum iser_data_dir iser_dir,
enum dma_data_direction dma_dir);

void iser_dma_unmap_task_data(struct iscsi_iser_cmd_task *iser_ctask);
void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task);
#endif
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