int iser_send_control(struct iscsi_conn *conn,
struct iscsi_task *task)
{
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *mdesc = &iser_task->desc;
unsigned long data_seg_len;
int err = 0;
struct iser_device *device;
/* build the tx desc regd header and add it to the tx desc dto */
mdesc->type = ISCSI_TX_CONTROL;
iser_create_send_desc(iser_conn, mdesc);
device = iser_conn->ib_conn.device;
data_seg_len = ntoh24(task->hdr->dlength);
if (data_seg_len > 0) {
struct ib_sge *tx_dsg = &mdesc->tx_sg[1];
if (task != conn->login_task) {
iser_err("data present on non login task!!!\n");
goto send_control_error;
}
ib_dma_sync_single_for_cpu(device->ib_device,
iser_conn->login_req_dma, task->data_count,
DMA_TO_DEVICE);
memcpy(iser_conn->login_req_buf, task->data, task->data_count);
ib_dma_sync_single_for_device(device->ib_device,
iser_conn->login_req_dma, task->data_count,
DMA_TO_DEVICE);
tx_dsg->addr = iser_conn->login_req_dma;
tx_dsg->length = task->data_count;
tx_dsg->lkey = device->pd->local_dma_lkey;
mdesc->num_sge = 2;
}
if (task == conn->login_task) {
iser_dbg("op %x dsl %lx, posting login rx buffer\n",
task->hdr->opcode, data_seg_len);
err = iser_post_recvl(iser_conn);
if (err)
goto send_control_error;
err = iser_post_rx_bufs(conn, task->hdr);
if (err)
goto send_control_error;
}
err = iser_post_send(&iser_conn->ib_conn, mdesc, true);
if (!err)
return 0;
send_control_error:
iser_err("conn %p failed err %d\n",conn, err);
return err;
}
int iser_send_control(struct iscsi_conn *conn,
struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *mdesc = &iser_task->desc;
unsigned long data_seg_len;
int err = 0;
struct iser_device *device;
/* build the tx desc regd header and add it to the tx desc dto */
mdesc->type = ISCSI_TX_CONTROL;
iser_create_send_desc(iser_conn->ib_conn, mdesc);
device = iser_conn->ib_conn->device;
data_seg_len = ntoh24(task->hdr->dlength);
if (data_seg_len > 0) {
struct ib_sge *tx_dsg = &mdesc->tx_sg[1];
if (task != conn->login_task) {
iser_err("data present on non login task!!!\n");
goto send_control_error;
}
memcpy(iser_conn->ib_conn->login_buf, task->data,
task->data_count);
tx_dsg->addr = iser_conn->ib_conn->login_dma;
tx_dsg->length = data_seg_len;
tx_dsg->lkey = device->mr->lkey;
mdesc->num_sge = 2;
}
if (task == conn->login_task) {
err = iser_post_recvl(iser_conn->ib_conn);
if (err)
goto send_control_error;
}
err = iser_post_send(iser_conn->ib_conn, mdesc);
if (!err)
return 0;
send_control_error:
iser_err("conn %p failed err %d\n",conn, err);
return err;
}
