diff options
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.c | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 5f7a6fca0a4d..93399dff0c6f 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -56,6 +56,7 @@ #include <linux/net.h> #include <linux/scatterlist.h> #include <linux/delay.h> +#include <linux/slab.h> #include <net/sock.h> @@ -128,6 +129,28 @@ static int iscsi_iser_pdu_alloc(struct iscsi_task *task, uint8_t opcode) return 0; } +int iser_initialize_task_headers(struct iscsi_task *task, + struct iser_tx_desc *tx_desc) +{ + struct iscsi_iser_conn *iser_conn = task->conn->dd_data; + struct iser_device *device = iser_conn->ib_conn->device; + struct iscsi_iser_task *iser_task = task->dd_data; + u64 dma_addr; + + dma_addr = ib_dma_map_single(device->ib_device, (void *)tx_desc, + ISER_HEADERS_LEN, DMA_TO_DEVICE); + if (ib_dma_mapping_error(device->ib_device, dma_addr)) + return -ENOMEM; + + tx_desc->dma_addr = dma_addr; + tx_desc->tx_sg[0].addr = tx_desc->dma_addr; + tx_desc->tx_sg[0].length = ISER_HEADERS_LEN; + tx_desc->tx_sg[0].lkey = device->mr->lkey; + + iser_task->headers_initialized = 1; + iser_task->iser_conn = iser_conn; + return 0; +} /** * iscsi_iser_task_init - Initialize task * @task: iscsi task @@ -137,17 +160,17 @@ static int iscsi_iser_pdu_alloc(struct iscsi_task *task, uint8_t opcode) static int iscsi_iser_task_init(struct iscsi_task *task) { - struct iscsi_iser_conn *iser_conn = task->conn->dd_data; struct iscsi_iser_task *iser_task = task->dd_data; + if (!iser_task->headers_initialized) + if (iser_initialize_task_headers(task, &iser_task->desc)) + return -ENOMEM; + /* mgmt task */ - if (!task->sc) { - iser_task->desc.data = task->data; + if (!task->sc) return 0; - } iser_task->command_sent = 0; - iser_task->iser_conn = iser_conn; iser_task_rdma_init(iser_task); return 0; } @@ -168,7 +191,7 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) { int error = 0; - iser_dbg("task deq [cid %d itt 0x%x]\n", conn->id, task->itt); + iser_dbg("mtask xmit [cid %d itt 0x%x]\n", conn->id, task->itt); error = iser_send_control(conn, task); @@ -178,9 +201,6 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) * - 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); - return error; } @@ -232,7 +252,7 @@ iscsi_iser_task_xmit(struct iscsi_task *task) task->imm_count, task->unsol_r2t.data_length); } - iser_dbg("task deq [cid %d itt 0x%x]\n", + iser_dbg("ctask xmit [cid %d itt 0x%x]\n", conn->id, task->itt); /* Send the cmd PDU */ @@ -248,8 +268,6 @@ iscsi_iser_task_xmit(struct iscsi_task *task) error = iscsi_iser_task_xmit_unsol_data(conn, task); iscsi_iser_task_xmit_exit: - if (error && error != -ENOBUFS) - iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); return error; } @@ -283,7 +301,7 @@ iscsi_iser_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx) * due to issues with the login code re iser sematics * this not set in iscsi_conn_setup - FIXME */ - conn->max_recv_dlength = 128; + conn->max_recv_dlength = ISER_RECV_DATA_SEG_LEN; iser_conn = conn->dd_data; conn->dd_data = iser_conn; @@ -401,7 +419,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, struct Scsi_Host *shost; struct iser_conn *ib_conn; - shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 1); + shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 0); if (!shost) return NULL; shost->transportt = iscsi_iser_scsi_transport; @@ -596,7 +614,7 @@ static struct scsi_host_template iscsi_iser_sht = { .cmd_per_lun = ISER_DEF_CMD_PER_LUN, .eh_abort_handler = iscsi_eh_abort, .eh_device_reset_handler= iscsi_eh_device_reset, - .eh_target_reset_handler= iscsi_eh_target_reset, + .eh_target_reset_handler = iscsi_eh_recover_target, .target_alloc = iscsi_target_alloc, .use_clustering = DISABLE_CLUSTERING, .proc_name = "iscsi_iser", @@ -675,7 +693,7 @@ static int __init iser_init(void) memset(&ig, 0, sizeof(struct iser_global)); ig.desc_cache = kmem_cache_create("iser_descriptors", - sizeof (struct iser_desc), + sizeof(struct iser_tx_desc), 0, SLAB_HWCACHE_ALIGN, NULL); if (ig.desc_cache == NULL) |