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[SCSI] iser: handle iscsi_cmd_task rename 

This handles the iscsi_cmd_task rename and renames
the iser cmd task to iser task.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Mike Christie 2008-05-21 15:54:11 -05:00 committed by James Bottomley
parent 135a8ad4e0
commit 2261ec3d68
4 changed files with 203 additions and 202 deletions
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114
drivers/infiniband/ulp/iser/iscsi_iser.c
View File

@ -124,33 +124,33 @@ error:
/**
* 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
@ -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);
@ -181,27 +181,27 @@ 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:
@ -209,37 +209,37 @@ iscsi_iser_task_xmit_unsol_data_exit:
}
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)
@ -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);
}
}
@ -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",
@ -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;
@ -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;

24
drivers/infiniband/ulp/iser/iscsi_iser.h
View File

@ -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;
@ -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;
@ -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;
@ -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,
@ -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);
@ -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,
@ -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

190
drivers/infiniband/ulp/iser/iser_initiator.c
View File

@ -66,46 +66,46 @@ static void iser_dto_add_regd_buff(struct iser_dto *dto,
/* Register user buffer memory and initialize passive rdma
* dto descriptor. Total data size is stored in
* iser_ctask->data[ISER_DIR_IN].data_len
* iser_task->data[ISER_DIR_IN].data_len
*/
static int iser_prepare_read_cmd(struct iscsi_cmd_task *ctask,
static int iser_prepare_read_cmd(struct iscsi_task *task,
unsigned int edtl)
{
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_regd_buf *regd_buf;
int err;
struct iser_hdr *hdr = &iser_ctask->desc.iser_header;
struct iser_data_buf *buf_in = &iser_ctask->data[ISER_DIR_IN];
struct iser_hdr *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_in = &iser_task->data[ISER_DIR_IN];
err = iser_dma_map_task_data(iser_ctask,
err = iser_dma_map_task_data(iser_task,
buf_in,
ISER_DIR_IN,
DMA_FROM_DEVICE);
if (err)
return err;
if (edtl > iser_ctask->data[ISER_DIR_IN].data_len) {
if (edtl > iser_task->data[ISER_DIR_IN].data_len) {
iser_err("Total data length: %ld, less than EDTL: "
"%d, in READ cmd BHS itt: %d, conn: 0x%p\n",
iser_ctask->data[ISER_DIR_IN].data_len, edtl,
ctask->itt, iser_ctask->iser_conn);
iser_task->data[ISER_DIR_IN].data_len, edtl,
task->itt, iser_task->iser_conn);
return -EINVAL;
}
err = iser_reg_rdma_mem(iser_ctask,ISER_DIR_IN);
err = iser_reg_rdma_mem(iser_task,ISER_DIR_IN);
if (err) {
iser_err("Failed to set up Data-IN RDMA\n");
return err;
}
regd_buf = &iser_ctask->rdma_regd[ISER_DIR_IN];
regd_buf = &iser_task->rdma_regd[ISER_DIR_IN];
hdr->flags |= ISER_RSV;
hdr->read_stag = cpu_to_be32(regd_buf->reg.rkey);
hdr->read_va = cpu_to_be64(regd_buf->reg.va);
iser_dbg("Cmd itt:%d READ tags RKEY:%#.4X VA:%#llX\n",
ctask->itt, regd_buf->reg.rkey,
task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va);
return 0;
@ -113,43 +113,43 @@ static int iser_prepare_read_cmd(struct iscsi_cmd_task *ctask,
/* Register user buffer memory and initialize passive rdma
* dto descriptor. Total data size is stored in
* ctask->data[ISER_DIR_OUT].data_len
* task->data[ISER_DIR_OUT].data_len
*/
static int
iser_prepare_write_cmd(struct iscsi_cmd_task *ctask,
iser_prepare_write_cmd(struct iscsi_task *task,
unsigned int imm_sz,
unsigned int unsol_sz,
unsigned int edtl)
{
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_regd_buf *regd_buf;
int err;
struct iser_dto *send_dto = &iser_ctask->desc.dto;
struct iser_hdr *hdr = &iser_ctask->desc.iser_header;
struct iser_data_buf *buf_out = &iser_ctask->data[ISER_DIR_OUT];
struct iser_dto *send_dto = &iser_task->desc.dto;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_out = &iser_task->data[ISER_DIR_OUT];
err = iser_dma_map_task_data(iser_ctask,
err = iser_dma_map_task_data(iser_task,
buf_out,
ISER_DIR_OUT,
DMA_TO_DEVICE);
if (err)
return err;
if (edtl > iser_ctask->data[ISER_DIR_OUT].data_len) {
if (edtl > iser_task->data[ISER_DIR_OUT].data_len) {
iser_err("Total data length: %ld, less than EDTL: %d, "
"in WRITE cmd BHS itt: %d, conn: 0x%p\n",
iser_ctask->data[ISER_DIR_OUT].data_len,
edtl, ctask->itt, ctask->conn);
iser_task->data[ISER_DIR_OUT].data_len,
edtl, task->itt, task->conn);
return -EINVAL;
}
err = iser_reg_rdma_mem(iser_ctask,ISER_DIR_OUT);
err = iser_reg_rdma_mem(iser_task,ISER_DIR_OUT);
if (err != 0) {
iser_err("Failed to register write cmd RDMA mem\n");
return err;
}
regd_buf = &iser_ctask->rdma_regd[ISER_DIR_OUT];
regd_buf = &iser_task->rdma_regd[ISER_DIR_OUT];
if (unsol_sz < edtl) {
hdr->flags |= ISER_WSV;
@ -158,13 +158,13 @@ iser_prepare_write_cmd(struct iscsi_cmd_task *ctask,
iser_dbg("Cmd itt:%d, WRITE tags, RKEY:%#.4X "
"VA:%#llX + unsol:%d\n",
ctask->itt, regd_buf->reg.rkey,
task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va, unsol_sz);
}
if (imm_sz > 0) {
iser_dbg("Cmd itt:%d, WRITE, adding imm.data sz: %d\n",
ctask->itt, imm_sz);
task->itt, imm_sz);
iser_dto_add_regd_buff(send_dto,
regd_buf,
0,
@ -300,13 +300,13 @@ int iser_conn_set_full_featured_mode(struct iscsi_conn *conn)
}
static int
iser_check_xmit(struct iscsi_conn *conn, void *ctask)
iser_check_xmit(struct iscsi_conn *conn, void *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
if (atomic_read(&iser_conn->ib_conn->post_send_buf_count) ==
ISER_QP_MAX_REQ_DTOS) {
iser_dbg("%ld can't xmit ctask %p\n",jiffies,ctask);
iser_dbg("%ld can't xmit task %p\n",jiffies,task);
return -ENOBUFS;
}
return 0;
@ -317,37 +317,37 @@ iser_check_xmit(struct iscsi_conn *conn, void *ctask)
* iser_send_command - send command PDU
*/
int iser_send_command(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask)
struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_dto *send_dto = NULL;
unsigned long edtl;
int err = 0;
struct iser_data_buf *data_buf;
struct iscsi_cmd *hdr = ctask->hdr;
struct scsi_cmnd *sc = ctask->sc;
struct iscsi_cmd *hdr = task->hdr;
struct scsi_cmnd *sc = task->sc;
if (!iser_conn_state_comp(iser_conn->ib_conn, ISER_CONN_UP)) {
iser_err("Failed to send, conn: 0x%p is not up\n", iser_conn->ib_conn);
return -EPERM;
}
if (iser_check_xmit(conn, ctask))
if (iser_check_xmit(conn, task))
return -ENOBUFS;
edtl = ntohl(hdr->data_length);
/* build the tx desc regd header and add it to the tx desc dto */
iser_ctask->desc.type = ISCSI_TX_SCSI_COMMAND;
send_dto = &iser_ctask->desc.dto;
send_dto->ctask = iser_ctask;
iser_create_send_desc(iser_conn, &iser_ctask->desc);
iser_task->desc.type = ISCSI_TX_SCSI_COMMAND;
send_dto = &iser_task->desc.dto;
send_dto->task = iser_task;
iser_create_send_desc(iser_conn, &iser_task->desc);
if (hdr->flags & ISCSI_FLAG_CMD_READ)
data_buf = &iser_ctask->data[ISER_DIR_IN];
data_buf = &iser_task->data[ISER_DIR_IN];
else
data_buf = &iser_ctask->data[ISER_DIR_OUT];
data_buf = &iser_task->data[ISER_DIR_OUT];
if (scsi_sg_count(sc)) { /* using a scatter list */
data_buf->buf = scsi_sglist(sc);
@ -357,15 +357,15 @@ int iser_send_command(struct iscsi_conn *conn,
data_buf->data_len = scsi_bufflen(sc);
if (hdr->flags & ISCSI_FLAG_CMD_READ) {
err = iser_prepare_read_cmd(ctask, edtl);
err = iser_prepare_read_cmd(task, edtl);
if (err)
goto send_command_error;
}
if (hdr->flags & ISCSI_FLAG_CMD_WRITE) {
err = iser_prepare_write_cmd(ctask,
ctask->imm_count,
ctask->imm_count +
ctask->unsol_count,
err = iser_prepare_write_cmd(task,
task->imm_count,
task->imm_count +
task->unsol_count,
edtl);
if (err)
goto send_command_error;
@ -380,15 +380,15 @@ int iser_send_command(struct iscsi_conn *conn,
goto send_command_error;
}
iser_ctask->status = ISER_TASK_STATUS_STARTED;
iser_task->status = ISER_TASK_STATUS_STARTED;
err = iser_post_send(&iser_ctask->desc);
err = iser_post_send(&iser_task->desc);
if (!err)
return 0;
send_command_error:
iser_dto_buffs_release(send_dto);
iser_err("conn %p failed ctask->itt %d err %d\n",conn, ctask->itt, err);
iser_err("conn %p failed task->itt %d err %d\n",conn, task->itt, err);
return err;
}
@ -396,11 +396,11 @@ send_command_error:
* iser_send_data_out - send data out PDU
*/
int iser_send_data_out(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask,
struct iscsi_task *task,
struct iscsi_data *hdr)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_desc *tx_desc = NULL;
struct iser_dto *send_dto = NULL;
unsigned long buf_offset;
@ -413,7 +413,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
return -EPERM;
}
if (iser_check_xmit(conn, ctask))
if (iser_check_xmit(conn, task))
return -ENOBUFS;
itt = (__force uint32_t)hdr->itt;
@ -434,7 +434,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
/* build the tx desc regd header and add it to the tx desc dto */
send_dto = &tx_desc->dto;
send_dto->ctask = iser_ctask;
send_dto->task = iser_task;
iser_create_send_desc(iser_conn, tx_desc);
iser_reg_single(iser_conn->ib_conn->device,
@ -442,15 +442,15 @@ int iser_send_data_out(struct iscsi_conn *conn,
/* all data was registered for RDMA, we can use the lkey */
iser_dto_add_regd_buff(send_dto,
&iser_ctask->rdma_regd[ISER_DIR_OUT],
&iser_task->rdma_regd[ISER_DIR_OUT],
buf_offset,
data_seg_len);
if (buf_offset + data_seg_len > iser_ctask->data[ISER_DIR_OUT].data_len) {
if (buf_offset + data_seg_len > iser_task->data[ISER_DIR_OUT].data_len) {
iser_err("Offset:%ld & DSL:%ld in Data-Out "
"inconsistent with total len:%ld, itt:%d\n",
buf_offset, data_seg_len,
iser_ctask->data[ISER_DIR_OUT].data_len, itt);
iser_task->data[ISER_DIR_OUT].data_len, itt);
err = -EINVAL;
goto send_data_out_error;
}
@ -470,11 +470,11 @@ send_data_out_error:
}
int iser_send_control(struct iscsi_conn *conn,
struct iscsi_cmd_task *ctask)
struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
struct iser_desc *mdesc = &iser_ctask->desc;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_desc *mdesc = &iser_task->desc;
struct iser_dto *send_dto = NULL;
unsigned long data_seg_len;
int err = 0;
@ -486,27 +486,27 @@ int iser_send_control(struct iscsi_conn *conn,
return -EPERM;
}
if (iser_check_xmit(conn, ctask))
if (iser_check_xmit(conn, task))
return -ENOBUFS;
/* build the tx desc regd header and add it to the tx desc dto */
mdesc->type = ISCSI_TX_CONTROL;
send_dto = &mdesc->dto;
send_dto->ctask = NULL;
send_dto->task = NULL;
iser_create_send_desc(iser_conn, mdesc);
device = iser_conn->ib_conn->device;
iser_reg_single(device, send_dto->regd[0], DMA_TO_DEVICE);
data_seg_len = ntoh24(ctask->hdr->dlength);
data_seg_len = ntoh24(task->hdr->dlength);
if (data_seg_len > 0) {
regd_buf = &mdesc->data_regd_buf;
memset(regd_buf, 0, sizeof(struct iser_regd_buf));
regd_buf->device = device;
regd_buf->virt_addr = ctask->data;
regd_buf->data_size = ctask->data_count;
regd_buf->virt_addr = task->data;
regd_buf->data_size = task->data_count;
iser_reg_single(device, regd_buf,
DMA_TO_DEVICE);
iser_dto_add_regd_buff(send_dto, regd_buf,
@ -538,8 +538,8 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
{
struct iser_dto *dto = &rx_desc->dto;
struct iscsi_iser_conn *conn = dto->ib_conn->iser_conn;
struct iscsi_cmd_task *ctask;
struct iscsi_iser_cmd_task *iser_ctask;
struct iscsi_task *task;
struct iscsi_iser_task *iser_task;
struct iscsi_hdr *hdr;
char *rx_data = NULL;
int rx_data_len = 0;
@ -558,16 +558,16 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
opcode = hdr->opcode & ISCSI_OPCODE_MASK;
if (opcode == ISCSI_OP_SCSI_CMD_RSP) {
ctask = iscsi_itt_to_ctask(conn->iscsi_conn, hdr->itt);
if (!ctask)
iser_err("itt can't be matched to ctask!!! "
task = iscsi_itt_to_ctask(conn->iscsi_conn, hdr->itt);
if (!task)
iser_err("itt can't be matched to task!!! "
"conn %p opcode %d itt %d\n",
conn->iscsi_conn, opcode, hdr->itt);
else {
iser_ctask = ctask->dd_data;
iser_dbg("itt %d ctask %p\n",hdr->itt, ctask);
iser_ctask->status = ISER_TASK_STATUS_COMPLETED;
iser_ctask_rdma_finalize(iser_ctask);
iser_task = task->dd_data;
iser_dbg("itt %d task %p\n",hdr->itt, task);
iser_task->status = ISER_TASK_STATUS_COMPLETED;
iser_task_rdma_finalize(iser_task);
}
}
iser_dto_buffs_release(dto);
@ -578,7 +578,7 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
kmem_cache_free(ig.desc_cache, rx_desc);
/* decrementing conn->post_recv_buf_count only --after-- freeing the *
* ctask eliminates the need to worry on ctasks which are completed in *
* task eliminates the need to worry on tasks which are completed in *
* parallel to the execution of iser_conn_term. So the code that waits *
* for the posted rx bufs refcount to become zero handles everything */
atomic_dec(&conn->ib_conn->post_recv_buf_count);
@ -590,7 +590,7 @@ void iser_snd_completion(struct iser_desc *tx_desc)
struct iser_conn *ib_conn = dto->ib_conn;
struct iscsi_iser_conn *iser_conn = ib_conn->iser_conn;
struct iscsi_conn *conn = iser_conn->iscsi_conn;
struct iscsi_cmd_task *ctask;
struct iscsi_task *task;
int resume_tx = 0;
iser_dbg("Initiator, Data sent dto=0x%p\n", dto);
@ -613,31 +613,31 @@ void iser_snd_completion(struct iser_desc *tx_desc)
if (tx_desc->type == ISCSI_TX_CONTROL) {
/* this arithmetic is legal by libiscsi dd_data allocation */
ctask = (void *) ((long)(void *)tx_desc -
sizeof(struct iscsi_cmd_task));
if (ctask->hdr->itt == RESERVED_ITT)
iscsi_put_ctask(ctask);
task = (void *) ((long)(void *)tx_desc -
sizeof(struct iscsi_task));
if (task->hdr->itt == RESERVED_ITT)
iscsi_put_task(task);
}
}
void iser_ctask_rdma_init(struct iscsi_iser_cmd_task *iser_ctask)
void iser_task_rdma_init(struct iscsi_iser_task *iser_task)
{
iser_ctask->status = ISER_TASK_STATUS_INIT;
iser_task->status = ISER_TASK_STATUS_INIT;
iser_ctask->dir[ISER_DIR_IN] = 0;
iser_ctask->dir[ISER_DIR_OUT] = 0;
iser_task->dir[ISER_DIR_IN] = 0;
iser_task->dir[ISER_DIR_OUT] = 0;
iser_ctask->data[ISER_DIR_IN].data_len = 0;
iser_ctask->data[ISER_DIR_OUT].data_len = 0;
iser_task->data[ISER_DIR_IN].data_len = 0;
iser_task->data[ISER_DIR_OUT].data_len = 0;
memset(&iser_ctask->rdma_regd[ISER_DIR_IN], 0,
memset(&iser_task->rdma_regd[ISER_DIR_IN], 0,
sizeof(struct iser_regd_buf));
memset(&iser_ctask->rdma_regd[ISER_DIR_OUT], 0,
memset(&iser_task->rdma_regd[ISER_DIR_OUT], 0,
sizeof(struct iser_regd_buf));
}
void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
int deferred;
int is_rdma_aligned = 1;
@ -646,17 +646,17 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
/* if we were reading, copy back to unaligned sglist,
* anyway dma_unmap and free the copy
*/
if (iser_ctask->data_copy[ISER_DIR_IN].copy_buf != NULL) {
if (iser_task->data_copy[ISER_DIR_IN].copy_buf != NULL) {
is_rdma_aligned = 0;
iser_finalize_rdma_unaligned_sg(iser_ctask, ISER_DIR_IN);
iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_IN);
}
if (iser_ctask->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
if (iser_task->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
is_rdma_aligned = 0;
iser_finalize_rdma_unaligned_sg(iser_ctask, ISER_DIR_OUT);
iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_OUT);
}
if (iser_ctask->dir[ISER_DIR_IN]) {
regd = &iser_ctask->rdma_regd[ISER_DIR_IN];
if (iser_task->dir[ISER_DIR_IN]) {
regd = &iser_task->rdma_regd[ISER_DIR_IN];
deferred = iser_regd_buff_release(regd);
if (deferred) {
iser_err("%d references remain for BUF-IN rdma reg\n",
@ -664,8 +664,8 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
}
}
if (iser_ctask->dir[ISER_DIR_OUT]) {
regd = &iser_ctask->rdma_regd[ISER_DIR_OUT];
if (iser_task->dir[ISER_DIR_OUT]) {
regd = &iser_task->rdma_regd[ISER_DIR_OUT];
deferred = iser_regd_buff_release(regd);
if (deferred) {
iser_err("%d references remain for BUF-OUT rdma reg\n",
@ -675,7 +675,7 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
/* if the data was unaligned, it was already unmapped and then copied */
if (is_rdma_aligned)
iser_dma_unmap_task_data(iser_ctask);
iser_dma_unmap_task_data(iser_task);
}
void iser_dto_buffs_release(struct iser_dto *dto)

77
drivers/infiniband/ulp/iser/iser_memory.c
View File

@ -101,13 +101,13 @@ void iser_reg_single(struct iser_device *device,
/**
* iser_start_rdma_unaligned_sg
*/
static int iser_start_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
static int iser_start_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
int dma_nents;
struct ib_device *dev;
char *mem = NULL;
struct iser_data_buf *data = &iser_ctask->data[cmd_dir];
struct iser_data_buf *data = &iser_task->data[cmd_dir];
unsigned long cmd_data_len = data->data_len;
if (cmd_data_len > ISER_KMALLOC_THRESHOLD)
@ -140,37 +140,37 @@ static int iser_start_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
}
}
sg_init_one(&iser_ctask->data_copy[cmd_dir].sg_single, mem, cmd_data_len);
iser_ctask->data_copy[cmd_dir].buf =
&iser_ctask->data_copy[cmd_dir].sg_single;
iser_ctask->data_copy[cmd_dir].size = 1;
sg_init_one(&iser_task->data_copy[cmd_dir].sg_single, mem, cmd_data_len);
iser_task->data_copy[cmd_dir].buf =
&iser_task->data_copy[cmd_dir].sg_single;
iser_task->data_copy[cmd_dir].size = 1;
iser_ctask->data_copy[cmd_dir].copy_buf = mem;
iser_task->data_copy[cmd_dir].copy_buf = mem;
dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
dev = iser_task->iser_conn->ib_conn->device->ib_device;
dma_nents = ib_dma_map_sg(dev,
&iser_ctask->data_copy[cmd_dir].sg_single,
&iser_task->data_copy[cmd_dir].sg_single,
1,
(cmd_dir == ISER_DIR_OUT) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
BUG_ON(dma_nents == 0);
iser_ctask->data_copy[cmd_dir].dma_nents = dma_nents;
iser_task->data_copy[cmd_dir].dma_nents = dma_nents;
return 0;
}
/**
* iser_finalize_rdma_unaligned_sg
*/
void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct ib_device *dev;
struct iser_data_buf *mem_copy;
unsigned long cmd_data_len;
dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
mem_copy = &iser_ctask->data_copy[cmd_dir];
dev = iser_task->iser_conn->ib_conn->device->ib_device;
mem_copy = &iser_task->data_copy[cmd_dir];
ib_dma_unmap_sg(dev, &mem_copy->sg_single, 1,
(cmd_dir == ISER_DIR_OUT) ?
@ -186,8 +186,8 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
/* copy back read RDMA to unaligned sg */
mem = mem_copy->copy_buf;
sgl = (struct scatterlist *)iser_ctask->data[ISER_DIR_IN].buf;
sg_size = iser_ctask->data[ISER_DIR_IN].size;
sgl = (struct scatterlist *)iser_task->data[ISER_DIR_IN].buf;
sg_size = iser_task->data[ISER_DIR_IN].size;
p = mem;
for_each_sg(sgl, sg, sg_size, i) {
@ -200,7 +200,7 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
}
}
cmd_data_len = iser_ctask->data[cmd_dir].data_len;
cmd_data_len = iser_task->data[cmd_dir].data_len;
if (cmd_data_len > ISER_KMALLOC_THRESHOLD)
free_pages((unsigned long)mem_copy->copy_buf,
@ -378,15 +378,15 @@ static void iser_page_vec_build(struct iser_data_buf *data,
}
}
int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
struct iser_data_buf *data,
enum iser_data_dir iser_dir,
enum dma_data_direction dma_dir)
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)
{
struct ib_device *dev;
iser_ctask->dir[iser_dir] = 1;
dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
iser_task->dir[iser_dir] = 1;
dev = iser_task->iser_conn->ib_conn->device->ib_device;
data->dma_nents = ib_dma_map_sg(dev, data->buf, data->size, dma_dir);
if (data->dma_nents == 0) {
@ -396,20 +396,20 @@ int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
return 0;
}
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)
{
struct ib_device *dev;
struct iser_data_buf *data;
dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
dev = iser_task->iser_conn->ib_conn->device->ib_device;
if (iser_ctask->dir[ISER_DIR_IN]) {
data = &iser_ctask->data[ISER_DIR_IN];
if (iser_task->dir[ISER_DIR_IN]) {
data = &iser_task->data[ISER_DIR_IN];
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_FROM_DEVICE);
}
if (iser_ctask->dir[ISER_DIR_OUT]) {
data = &iser_ctask->data[ISER_DIR_OUT];
if (iser_task->dir[ISER_DIR_OUT]) {
data = &iser_task->data[ISER_DIR_OUT];
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_TO_DEVICE);
}
}
@ -420,21 +420,21 @@ void iser_dma_unmap_task_data(struct iscsi_iser_cmd_task *iser_ctask)
*
* returns 0 on success, errno code on failure
*/
int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
int iser_reg_rdma_mem(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct iscsi_conn *iscsi_conn = iser_ctask->iser_conn->iscsi_conn;
struct iser_conn *ib_conn = iser_ctask->iser_conn->ib_conn;
struct iscsi_conn *iscsi_conn = iser_task->iser_conn->iscsi_conn;
struct iser_conn *ib_conn = iser_task->iser_conn->ib_conn;
struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_ctask->data[cmd_dir];
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf;
int aligned_len;
int err;
int i;
struct scatterlist *sg;
regd_buf = &iser_ctask->rdma_regd[cmd_dir];
regd_buf = &iser_task->rdma_regd[cmd_dir];
aligned_len = iser_data_buf_aligned_len(mem, ibdev);
if (aligned_len != mem->dma_nents) {
@ -444,13 +444,13 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
iser_data_buf_dump(mem, ibdev);
/* unmap the command data before accessing it */
iser_dma_unmap_task_data(iser_ctask);
iser_dma_unmap_task_data(iser_task);
/* allocate copy buf, if we are writing, copy the */
/* unaligned scatterlist, dma map the copy */
if (iser_start_rdma_unaligned_sg(iser_ctask, cmd_dir) != 0)
if (iser_start_rdma_unaligned_sg(iser_task, cmd_dir) != 0)
return -ENOMEM;
mem = &iser_ctask->data_copy[cmd_dir];
mem = &iser_task->data_copy[cmd_dir];
}
/* if there a single dma entry, FMR is not needed */
@ -474,8 +474,9 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
err = iser_reg_page_vec(ib_conn, ib_conn->page_vec, &regd_buf->reg);
if (err) {
iser_data_buf_dump(mem, ibdev);
iser_err("mem->dma_nents = %d (dlength = 0x%x)\n", mem->dma_nents,
ntoh24(iser_ctask->desc.iscsi_header.dlength));
iser_err("mem->dma_nents = %d (dlength = 0x%x)\n",
mem->dma_nents,
ntoh24(iser_task->desc.iscsi_header.dlength));
iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
ib_conn->page_vec->data_size, ib_conn->page_vec->length,
ib_conn->page_vec->offset);