From 5716af6e5234402b2017f41beb36c086201fae42 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 1 Oct 2014 14:01:57 +0300 Subject: IB/iser: Rename ib_conn -> iser_conn Two reasons why we choose to do this: 1. No point today calling struct iser_conn by another name ib_conn 2. In the next patches we will restructure iser control plane representation - struct iser_conn: connection logical representation - struct ib_conn: connection RDMA layout representation This patch does not change any functionality. Signed-off-by: Ariel Nahum Signed-off-by: Sagi Grimberg Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 93ce62f..1f3ad2b 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -147,8 +147,8 @@ static int iscsi_iser_pdu_alloc(struct iscsi_task *task, uint8_t opcode) int iser_initialize_task_headers(struct iscsi_task *task, struct iser_tx_desc *tx_desc) { - struct iser_conn *ib_conn = task->conn->dd_data; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = task->conn->dd_data; + struct iser_device *device = iser_conn->device; struct iscsi_iser_task *iser_task = task->dd_data; u64 dma_addr; @@ -162,7 +162,7 @@ int iser_initialize_task_headers(struct iscsi_task *task, tx_desc->tx_sg[0].length = ISER_HEADERS_LEN; tx_desc->tx_sg[0].lkey = device->mr->lkey; - iser_task->ib_conn = ib_conn; + iser_task->iser_conn = iser_conn; return 0; } /** @@ -290,8 +290,8 @@ static void iscsi_iser_cleanup_task(struct iscsi_task *task) { struct iscsi_iser_task *iser_task = task->dd_data; struct iser_tx_desc *tx_desc = &iser_task->desc; - struct iser_conn *ib_conn = task->conn->dd_data; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = task->conn->dd_data; + struct iser_device *device = iser_conn->device; ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE); @@ -344,7 +344,7 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, int is_leading) { struct iscsi_conn *conn = cls_conn->dd_data; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; struct iscsi_endpoint *ep; int error; @@ -360,30 +360,30 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, (unsigned long long)transport_eph); return -EINVAL; } - ib_conn = ep->dd_data; + iser_conn = ep->dd_data; - mutex_lock(&ib_conn->state_mutex); - if (ib_conn->state != ISER_CONN_UP) { + mutex_lock(&iser_conn->state_mutex); + if (iser_conn->state != ISER_CONN_UP) { error = -EINVAL; iser_err("iser_conn %p state is %d, teardown started\n", - ib_conn, ib_conn->state); + iser_conn, iser_conn->state); goto out; } - error = iser_alloc_rx_descriptors(ib_conn, conn->session); + error = iser_alloc_rx_descriptors(iser_conn, conn->session); if (error) goto out; /* binds the iSER connection retrieved from the previously * connected ep_handle to the iSCSI layer connection. exchanges * connection pointers */ - iser_info("binding iscsi conn %p to ib_conn %p\n", conn, ib_conn); + iser_info("binding iscsi conn %p to iser_conn %p\n", conn, iser_conn); - conn->dd_data = ib_conn; - ib_conn->iscsi_conn = conn; + conn->dd_data = iser_conn; + iser_conn->iscsi_conn = conn; out: - mutex_unlock(&ib_conn->state_mutex); + mutex_unlock(&iser_conn->state_mutex); return error; } @@ -391,11 +391,11 @@ static int iscsi_iser_conn_start(struct iscsi_cls_conn *cls_conn) { struct iscsi_conn *iscsi_conn; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; iscsi_conn = cls_conn->dd_data; - ib_conn = iscsi_conn->dd_data; - reinit_completion(&ib_conn->stop_completion); + iser_conn = iscsi_conn->dd_data; + reinit_completion(&iser_conn->stop_completion); return iscsi_conn_start(cls_conn); } @@ -404,18 +404,18 @@ static void iscsi_iser_conn_stop(struct iscsi_cls_conn *cls_conn, int flag) { struct iscsi_conn *conn = cls_conn->dd_data; - struct iser_conn *ib_conn = conn->dd_data; + struct iser_conn *iser_conn = conn->dd_data; - iser_dbg("stopping iscsi_conn: %p, ib_conn: %p\n", conn, ib_conn); + iser_dbg("stopping iscsi_conn: %p, iser_conn: %p\n", conn, iser_conn); iscsi_conn_stop(cls_conn, flag); /* * Userspace may have goofed up and not bound the connection or * might have only partially setup the connection. */ - if (ib_conn) { + if (iser_conn) { conn->dd_data = NULL; - complete(&ib_conn->stop_completion); + complete(&iser_conn->stop_completion); } } @@ -447,7 +447,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, struct iscsi_cls_session *cls_session; struct iscsi_session *session; struct Scsi_Host *shost; - struct iser_conn *ib_conn = NULL; + struct iser_conn *iser_conn = NULL; shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 0); if (!shost) @@ -464,9 +464,9 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, * the leading conn's ep so this will be NULL; */ if (ep) { - ib_conn = ep->dd_data; - if (ib_conn->pi_support) { - u32 sig_caps = ib_conn->device->dev_attr.sig_prot_cap; + iser_conn = ep->dd_data; + if (iser_conn->pi_support) { + u32 sig_caps = iser_conn->device->dev_attr.sig_prot_cap; scsi_host_set_prot(shost, iser_dif_prot_caps(sig_caps)); if (iser_pi_guard) @@ -476,8 +476,8 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, } } - if (iscsi_host_add(shost, - ep ? ib_conn->device->ib_device->dma_device : NULL)) + if (iscsi_host_add(shost, ep ? + iser_conn->device->ib_device->dma_device : NULL)) goto free_host; if (cmds_max > ISER_DEF_XMIT_CMDS_MAX) { @@ -577,17 +577,17 @@ iscsi_iser_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *s static int iscsi_iser_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param param, char *buf) { - struct iser_conn *ib_conn = ep->dd_data; + struct iser_conn *iser_conn = ep->dd_data; int len; switch (param) { case ISCSI_PARAM_CONN_PORT: case ISCSI_PARAM_CONN_ADDRESS: - if (!ib_conn || !ib_conn->cma_id) + if (!iser_conn || !iser_conn->cma_id) return -ENOTCONN; return iscsi_conn_get_addr_param((struct sockaddr_storage *) - &ib_conn->cma_id->route.addr.dst_addr, + &iser_conn->cma_id->route.addr.dst_addr, param, buf); break; default: @@ -602,24 +602,24 @@ iscsi_iser_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, int non_blocking) { int err; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; struct iscsi_endpoint *ep; ep = iscsi_create_endpoint(0); if (!ep) return ERR_PTR(-ENOMEM); - ib_conn = kzalloc(sizeof(*ib_conn), GFP_KERNEL); - if (!ib_conn) { + iser_conn = kzalloc(sizeof(*iser_conn), GFP_KERNEL); + if (!iser_conn) { err = -ENOMEM; goto failure; } - ep->dd_data = ib_conn; - ib_conn->ep = ep; - iser_conn_init(ib_conn); + ep->dd_data = iser_conn; + iser_conn->ep = ep; + iser_conn_init(iser_conn); - err = iser_connect(ib_conn, NULL, dst_addr, non_blocking); + err = iser_connect(iser_conn, NULL, dst_addr, non_blocking); if (err) goto failure; @@ -632,22 +632,22 @@ failure: static int iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; int rc; - ib_conn = ep->dd_data; - rc = wait_for_completion_interruptible_timeout(&ib_conn->up_completion, + iser_conn = ep->dd_data; + rc = wait_for_completion_interruptible_timeout(&iser_conn->up_completion, msecs_to_jiffies(timeout_ms)); /* if conn establishment failed, return error code to iscsi */ if (rc == 0) { - mutex_lock(&ib_conn->state_mutex); - if (ib_conn->state == ISER_CONN_TERMINATING || - ib_conn->state == ISER_CONN_DOWN) + mutex_lock(&iser_conn->state_mutex); + if (iser_conn->state == ISER_CONN_TERMINATING || + iser_conn->state == ISER_CONN_DOWN) rc = -1; - mutex_unlock(&ib_conn->state_mutex); + mutex_unlock(&iser_conn->state_mutex); } - iser_info("ib conn %p rc = %d\n", ib_conn, rc); + iser_info("ib conn %p rc = %d\n", iser_conn, rc); if (rc > 0) return 1; /* success, this is the equivalent of POLLOUT */ @@ -660,12 +660,14 @@ iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) static void iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; - ib_conn = ep->dd_data; - iser_info("ep %p ib conn %p state %d\n", ep, ib_conn, ib_conn->state); - mutex_lock(&ib_conn->state_mutex); - iser_conn_terminate(ib_conn); + iser_conn = ep->dd_data; + iser_info("ep %p iser conn %p state %d\n", + ep, iser_conn, iser_conn->state); + + mutex_lock(&iser_conn->state_mutex); + iser_conn_terminate(iser_conn); /* * if iser_conn and iscsi_conn are bound, we must wait for @@ -673,14 +675,14 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep) * the iser resources. Otherwise we are safe to free resources * immediately. */ - if (ib_conn->iscsi_conn) { - INIT_WORK(&ib_conn->release_work, iser_release_work); - queue_work(release_wq, &ib_conn->release_work); - mutex_unlock(&ib_conn->state_mutex); + if (iser_conn->iscsi_conn) { + INIT_WORK(&iser_conn->release_work, iser_release_work); + queue_work(release_wq, &iser_conn->release_work); + mutex_unlock(&iser_conn->state_mutex); } else { - ib_conn->state = ISER_CONN_DOWN; - mutex_unlock(&ib_conn->state_mutex); - iser_conn_release(ib_conn); + iser_conn->state = ISER_CONN_DOWN; + mutex_unlock(&iser_conn->state_mutex); + iser_conn_release(iser_conn); } iscsi_destroy_endpoint(ep); } @@ -843,7 +845,7 @@ register_transport_failure: static void __exit iser_exit(void) { - struct iser_conn *ib_conn, *n; + struct iser_conn *iser_conn, *n; int connlist_empty; iser_dbg("Removing iSER datamover...\n"); @@ -856,8 +858,9 @@ static void __exit iser_exit(void) if (!connlist_empty) { iser_err("Error cleanup stage completed but we still have iser " "connections, destroying them anyway.\n"); - list_for_each_entry_safe(ib_conn, n, &ig.connlist, conn_list) { - iser_conn_release(ib_conn); + list_for_each_entry_safe(iser_conn, n, &ig.connlist, + conn_list) { + iser_conn_release(iser_conn); } } diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h index 9f0e0e3..ec34b8f 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -179,7 +179,7 @@ struct iser_cm_hdr { /* Length of an object name string */ #define ISER_OBJECT_NAME_SIZE 64 -enum iser_ib_conn_state { +enum iser_conn_state { ISER_CONN_INIT, /* descriptor allocd, no conn */ ISER_CONN_PENDING, /* in the process of being established */ ISER_CONN_UP, /* up and running */ @@ -281,9 +281,9 @@ struct iser_device { int cq_active_qps[ISER_MAX_CQ]; int cqs_used; struct iser_cq_desc *cq_desc; - int (*iser_alloc_rdma_reg_res)(struct iser_conn *ib_conn, + int (*iser_alloc_rdma_reg_res)(struct iser_conn *iser_conn, unsigned cmds_max); - void (*iser_free_rdma_reg_res)(struct iser_conn *ib_conn); + void (*iser_free_rdma_reg_res)(struct iser_conn *iser_conn); int (*iser_reg_rdma_mem)(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir); void (*iser_unreg_rdma_mem)(struct iscsi_iser_task *iser_task, @@ -320,7 +320,7 @@ struct fast_reg_descriptor { struct iser_conn { struct iscsi_conn *iscsi_conn; struct iscsi_endpoint *ep; - enum iser_ib_conn_state state; /* rdma connection state */ + enum iser_conn_state state; /* rdma connection state */ atomic_t refcount; spinlock_t lock; /* used for state changes */ struct iser_device *device; /* device context */ @@ -363,7 +363,7 @@ struct iser_conn { struct iscsi_iser_task { struct iser_tx_desc desc; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; enum iser_task_status status; struct scsi_cmnd *sc; int command_sent; /* set if command sent */ @@ -419,25 +419,26 @@ void iscsi_iser_recv(struct iscsi_conn *conn, char *rx_data, int rx_data_len); -void iser_conn_init(struct iser_conn *ib_conn); +void iser_conn_init(struct iser_conn *iser_conn); -void iser_conn_release(struct iser_conn *ib_conn); +void iser_conn_release(struct iser_conn *iser_conn); -void iser_conn_terminate(struct iser_conn *ib_conn); +void iser_conn_terminate(struct iser_conn *iser_conn); void iser_release_work(struct work_struct *work); void iser_rcv_completion(struct iser_rx_desc *desc, unsigned long dto_xfer_len, - struct iser_conn *ib_conn); + struct iser_conn *iser_conn); -void iser_snd_completion(struct iser_tx_desc *desc, struct iser_conn *ib_conn); +void iser_snd_completion(struct iser_tx_desc *desc, + struct iser_conn *iser_conn); void iser_task_rdma_init(struct iscsi_iser_task *task); void iser_task_rdma_finalize(struct iscsi_iser_task *task); -void iser_free_rx_descriptors(struct iser_conn *ib_conn); +void iser_free_rx_descriptors(struct iser_conn *iser_conn); void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task, struct iser_data_buf *mem, @@ -449,12 +450,12 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *task, int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *task, enum iser_data_dir cmd_dir); -int iser_connect(struct iser_conn *ib_conn, +int iser_connect(struct iser_conn *iser_conn, struct sockaddr *src_addr, struct sockaddr *dst_addr, int non_blocking); -int iser_reg_page_vec(struct iser_conn *ib_conn, +int iser_reg_page_vec(struct iser_conn *iser_conn, struct iser_page_vec *page_vec, struct iser_mem_reg *mem_reg); @@ -463,9 +464,9 @@ void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task, void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir); -int iser_post_recvl(struct iser_conn *ib_conn); -int iser_post_recvm(struct iser_conn *ib_conn, int count); -int iser_post_send(struct iser_conn *ib_conn, struct iser_tx_desc *tx_desc); +int iser_post_recvl(struct iser_conn *iser_conn); +int iser_post_recvm(struct iser_conn *iser_conn, int count); +int iser_post_send(struct iser_conn *iser_conn, struct iser_tx_desc *tx_desc); int iser_dma_map_task_data(struct iscsi_iser_task *iser_task, struct iser_data_buf *data, @@ -476,11 +477,12 @@ void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task, struct iser_data_buf *data); int iser_initialize_task_headers(struct iscsi_task *task, struct iser_tx_desc *tx_desc); -int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *session); -int iser_create_fmr_pool(struct iser_conn *ib_conn, unsigned cmds_max); -void iser_free_fmr_pool(struct iser_conn *ib_conn); -int iser_create_fastreg_pool(struct iser_conn *ib_conn, unsigned cmds_max); -void iser_free_fastreg_pool(struct iser_conn *ib_conn); +int iser_alloc_rx_descriptors(struct iser_conn *iser_conn, + struct iscsi_session *session); +int iser_create_fmr_pool(struct iser_conn *iser_conn, unsigned cmds_max); +void iser_free_fmr_pool(struct iser_conn *iser_conn); +int iser_create_fastreg_pool(struct iser_conn *iser_conn, unsigned cmds_max); +void iser_free_fastreg_pool(struct iser_conn *iser_conn); u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir, sector_t *sector); #endif diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c index 8d44a40..1f53ccb 100644 --- a/drivers/infiniband/ulp/iser/iser_initiator.c +++ b/drivers/infiniband/ulp/iser/iser_initiator.c @@ -49,7 +49,7 @@ static int iser_prepare_read_cmd(struct iscsi_task *task) { struct iscsi_iser_task *iser_task = task->dd_data; - struct iser_device *device = iser_task->ib_conn->device; + struct iser_device *device = iser_task->iser_conn->device; struct iser_regd_buf *regd_buf; int err; struct iser_hdr *hdr = &iser_task->desc.iser_header; @@ -103,7 +103,7 @@ iser_prepare_write_cmd(struct iscsi_task *task, unsigned int edtl) { struct iscsi_iser_task *iser_task = task->dd_data; - struct iser_device *device = iser_task->ib_conn->device; + struct iser_device *device = iser_task->iser_conn->device; struct iser_regd_buf *regd_buf; int err; struct iser_hdr *hdr = &iser_task->desc.iser_header; @@ -160,10 +160,10 @@ iser_prepare_write_cmd(struct iscsi_task *task, } /* creates a new tx descriptor and adds header regd buffer */ -static void iser_create_send_desc(struct iser_conn *ib_conn, +static void iser_create_send_desc(struct iser_conn *iser_conn, struct iser_tx_desc *tx_desc) { - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; ib_dma_sync_single_for_cpu(device->ib_device, tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE); @@ -179,103 +179,106 @@ static void iser_create_send_desc(struct iser_conn *ib_conn, } } -static void iser_free_login_buf(struct iser_conn *ib_conn) +static void iser_free_login_buf(struct iser_conn *iser_conn) { - if (!ib_conn->login_buf) + if (!iser_conn->login_buf) return; - if (ib_conn->login_req_dma) - ib_dma_unmap_single(ib_conn->device->ib_device, - ib_conn->login_req_dma, + if (iser_conn->login_req_dma) + ib_dma_unmap_single(iser_conn->device->ib_device, + iser_conn->login_req_dma, ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE); - if (ib_conn->login_resp_dma) - ib_dma_unmap_single(ib_conn->device->ib_device, - ib_conn->login_resp_dma, + if (iser_conn->login_resp_dma) + ib_dma_unmap_single(iser_conn->device->ib_device, + iser_conn->login_resp_dma, ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE); - kfree(ib_conn->login_buf); + kfree(iser_conn->login_buf); /* make sure we never redo any unmapping */ - ib_conn->login_req_dma = 0; - ib_conn->login_resp_dma = 0; - ib_conn->login_buf = NULL; + iser_conn->login_req_dma = 0; + iser_conn->login_resp_dma = 0; + iser_conn->login_buf = NULL; } -static int iser_alloc_login_buf(struct iser_conn *ib_conn) +static int iser_alloc_login_buf(struct iser_conn *iser_conn) { struct iser_device *device; int req_err, resp_err; - BUG_ON(ib_conn->device == NULL); + BUG_ON(iser_conn->device == NULL); - device = ib_conn->device; + device = iser_conn->device; - ib_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN + + iser_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN + ISER_RX_LOGIN_SIZE, GFP_KERNEL); - if (!ib_conn->login_buf) + if (!iser_conn->login_buf) goto out_err; - ib_conn->login_req_buf = ib_conn->login_buf; - ib_conn->login_resp_buf = ib_conn->login_buf + + iser_conn->login_req_buf = iser_conn->login_buf; + iser_conn->login_resp_buf = iser_conn->login_buf + ISCSI_DEF_MAX_RECV_SEG_LEN; - ib_conn->login_req_dma = ib_dma_map_single(ib_conn->device->ib_device, - (void *)ib_conn->login_req_buf, - ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE); + iser_conn->login_req_dma = ib_dma_map_single(device->ib_device, + iser_conn->login_req_buf, + ISCSI_DEF_MAX_RECV_SEG_LEN, + DMA_TO_DEVICE); - ib_conn->login_resp_dma = ib_dma_map_single(ib_conn->device->ib_device, - (void *)ib_conn->login_resp_buf, - ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE); + iser_conn->login_resp_dma = ib_dma_map_single(device->ib_device, + iser_conn->login_resp_buf, + ISER_RX_LOGIN_SIZE, + DMA_FROM_DEVICE); req_err = ib_dma_mapping_error(device->ib_device, - ib_conn->login_req_dma); + iser_conn->login_req_dma); resp_err = ib_dma_mapping_error(device->ib_device, - ib_conn->login_resp_dma); + iser_conn->login_resp_dma); if (req_err || resp_err) { if (req_err) - ib_conn->login_req_dma = 0; + iser_conn->login_req_dma = 0; if (resp_err) - ib_conn->login_resp_dma = 0; + iser_conn->login_resp_dma = 0; goto free_login_buf; } return 0; free_login_buf: - iser_free_login_buf(ib_conn); + iser_free_login_buf(iser_conn); out_err: iser_err("unable to alloc or map login buf\n"); return -ENOMEM; } -int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *session) +int iser_alloc_rx_descriptors(struct iser_conn *iser_conn, + struct iscsi_session *session) { int i, j; u64 dma_addr; struct iser_rx_desc *rx_desc; struct ib_sge *rx_sg; - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; - ib_conn->qp_max_recv_dtos = session->cmds_max; - ib_conn->qp_max_recv_dtos_mask = session->cmds_max - 1; /* cmds_max is 2^N */ - ib_conn->min_posted_rx = ib_conn->qp_max_recv_dtos >> 2; + iser_conn->qp_max_recv_dtos = session->cmds_max; + iser_conn->qp_max_recv_dtos_mask = session->cmds_max - 1; /* cmds_max is 2^N */ + iser_conn->min_posted_rx = iser_conn->qp_max_recv_dtos >> 2; - if (device->iser_alloc_rdma_reg_res(ib_conn, session->scsi_cmds_max)) + if (device->iser_alloc_rdma_reg_res(iser_conn, session->scsi_cmds_max)) goto create_rdma_reg_res_failed; - if (iser_alloc_login_buf(ib_conn)) + if (iser_alloc_login_buf(iser_conn)) goto alloc_login_buf_fail; - ib_conn->rx_descs = kmalloc(session->cmds_max * + iser_conn->rx_descs = kmalloc(session->cmds_max * sizeof(struct iser_rx_desc), GFP_KERNEL); - if (!ib_conn->rx_descs) + if (!iser_conn->rx_descs) goto rx_desc_alloc_fail; - rx_desc = ib_conn->rx_descs; + rx_desc = iser_conn->rx_descs; - for (i = 0; i < ib_conn->qp_max_recv_dtos; i++, rx_desc++) { + for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++) { dma_addr = ib_dma_map_single(device->ib_device, (void *)rx_desc, ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE); if (ib_dma_mapping_error(device->ib_device, dma_addr)) @@ -289,52 +292,52 @@ int iser_alloc_rx_descriptors(struct iser_conn *ib_conn, struct iscsi_session *s rx_sg->lkey = device->mr->lkey; } - ib_conn->rx_desc_head = 0; + iser_conn->rx_desc_head = 0; return 0; rx_desc_dma_map_failed: - rx_desc = ib_conn->rx_descs; + rx_desc = iser_conn->rx_descs; for (j = 0; j < i; j++, rx_desc++) ib_dma_unmap_single(device->ib_device, rx_desc->dma_addr, ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE); - kfree(ib_conn->rx_descs); - ib_conn->rx_descs = NULL; + kfree(iser_conn->rx_descs); + iser_conn->rx_descs = NULL; rx_desc_alloc_fail: - iser_free_login_buf(ib_conn); + iser_free_login_buf(iser_conn); alloc_login_buf_fail: - device->iser_free_rdma_reg_res(ib_conn); + device->iser_free_rdma_reg_res(iser_conn); create_rdma_reg_res_failed: iser_err("failed allocating rx descriptors / data buffers\n"); return -ENOMEM; } -void iser_free_rx_descriptors(struct iser_conn *ib_conn) +void iser_free_rx_descriptors(struct iser_conn *iser_conn) { int i; struct iser_rx_desc *rx_desc; - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; - if (!ib_conn->rx_descs) + if (!iser_conn->rx_descs) goto free_login_buf; if (device->iser_free_rdma_reg_res) - device->iser_free_rdma_reg_res(ib_conn); + device->iser_free_rdma_reg_res(iser_conn); - rx_desc = ib_conn->rx_descs; - for (i = 0; i < ib_conn->qp_max_recv_dtos; i++, rx_desc++) + rx_desc = iser_conn->rx_descs; + for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++) ib_dma_unmap_single(device->ib_device, rx_desc->dma_addr, ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE); - kfree(ib_conn->rx_descs); + kfree(iser_conn->rx_descs); /* make sure we never redo any unmapping */ - ib_conn->rx_descs = NULL; + iser_conn->rx_descs = NULL; free_login_buf: - iser_free_login_buf(ib_conn); + iser_free_login_buf(iser_conn); } static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req) { - struct iser_conn *ib_conn = conn->dd_data; + struct iser_conn *iser_conn = conn->dd_data; struct iscsi_session *session = conn->session; iser_dbg("req op %x flags %x\n", req->opcode, req->flags); @@ -347,18 +350,18 @@ static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req) * response) and no posted send buffers left - they must have been * consumed during previous login phases. */ - WARN_ON(ib_conn->post_recv_buf_count != 1); - WARN_ON(atomic_read(&ib_conn->post_send_buf_count) != 0); + WARN_ON(iser_conn->post_recv_buf_count != 1); + WARN_ON(atomic_read(&iser_conn->post_send_buf_count) != 0); if (session->discovery_sess) { iser_info("Discovery session, re-using login RX buffer\n"); return 0; } else iser_info("Normal session, posting batch of RX %d buffers\n", - ib_conn->min_posted_rx); + iser_conn->min_posted_rx); /* Initial post receive buffers */ - if (iser_post_recvm(ib_conn, ib_conn->min_posted_rx)) + if (iser_post_recvm(iser_conn, iser_conn->min_posted_rx)) return -ENOMEM; return 0; @@ -370,7 +373,7 @@ static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req) int iser_send_command(struct iscsi_conn *conn, struct iscsi_task *task) { - struct iser_conn *ib_conn = conn->dd_data; + struct iser_conn *iser_conn = conn->dd_data; struct iscsi_iser_task *iser_task = task->dd_data; unsigned long edtl; int err; @@ -383,7 +386,7 @@ int iser_send_command(struct iscsi_conn *conn, /* build the tx desc regd header and add it to the tx desc dto */ tx_desc->type = ISCSI_TX_SCSI_COMMAND; - iser_create_send_desc(ib_conn, tx_desc); + iser_create_send_desc(iser_conn, tx_desc); if (hdr->flags & ISCSI_FLAG_CMD_READ) { data_buf = &iser_task->data[ISER_DIR_IN]; @@ -423,7 +426,7 @@ int iser_send_command(struct iscsi_conn *conn, iser_task->status = ISER_TASK_STATUS_STARTED; - err = iser_post_send(ib_conn, tx_desc); + err = iser_post_send(iser_conn, tx_desc); if (!err) return 0; @@ -439,7 +442,7 @@ int iser_send_data_out(struct iscsi_conn *conn, struct iscsi_task *task, struct iscsi_data *hdr) { - struct iser_conn *ib_conn = conn->dd_data; + struct iser_conn *iser_conn = conn->dd_data; struct iscsi_iser_task *iser_task = task->dd_data; struct iser_tx_desc *tx_desc = NULL; struct iser_regd_buf *regd_buf; @@ -488,7 +491,7 @@ int iser_send_data_out(struct iscsi_conn *conn, itt, buf_offset, data_seg_len); - err = iser_post_send(ib_conn, tx_desc); + err = iser_post_send(iser_conn, tx_desc); if (!err) return 0; @@ -501,7 +504,7 @@ send_data_out_error: int iser_send_control(struct iscsi_conn *conn, struct iscsi_task *task) { - struct iser_conn *ib_conn = conn->dd_data; + 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; @@ -510,9 +513,9 @@ int iser_send_control(struct iscsi_conn *conn, /* build the tx desc regd header and add it to the tx desc dto */ mdesc->type = ISCSI_TX_CONTROL; - iser_create_send_desc(ib_conn, mdesc); + iser_create_send_desc(iser_conn, mdesc); - device = ib_conn->device; + device = iser_conn->device; data_seg_len = ntoh24(task->hdr->dlength); @@ -524,16 +527,16 @@ int iser_send_control(struct iscsi_conn *conn, } ib_dma_sync_single_for_cpu(device->ib_device, - ib_conn->login_req_dma, task->data_count, + iser_conn->login_req_dma, task->data_count, DMA_TO_DEVICE); - memcpy(ib_conn->login_req_buf, task->data, task->data_count); + memcpy(iser_conn->login_req_buf, task->data, task->data_count); ib_dma_sync_single_for_device(device->ib_device, - ib_conn->login_req_dma, task->data_count, + iser_conn->login_req_dma, task->data_count, DMA_TO_DEVICE); - tx_dsg->addr = ib_conn->login_req_dma; + tx_dsg->addr = iser_conn->login_req_dma; tx_dsg->length = task->data_count; tx_dsg->lkey = device->mr->lkey; mdesc->num_sge = 2; @@ -542,7 +545,7 @@ int iser_send_control(struct iscsi_conn *conn, 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(ib_conn); + err = iser_post_recvl(iser_conn); if (err) goto send_control_error; err = iser_post_rx_bufs(conn, task->hdr); @@ -550,7 +553,7 @@ int iser_send_control(struct iscsi_conn *conn, goto send_control_error; } - err = iser_post_send(ib_conn, mdesc); + err = iser_post_send(iser_conn, mdesc); if (!err) return 0; @@ -564,59 +567,59 @@ send_control_error: */ void iser_rcv_completion(struct iser_rx_desc *rx_desc, unsigned long rx_xfer_len, - struct iser_conn *ib_conn) + struct iser_conn *iser_conn) { struct iscsi_hdr *hdr; u64 rx_dma; int rx_buflen, outstanding, count, err; /* differentiate between login to all other PDUs */ - if ((char *)rx_desc == ib_conn->login_resp_buf) { - rx_dma = ib_conn->login_resp_dma; + if ((char *)rx_desc == iser_conn->login_resp_buf) { + rx_dma = iser_conn->login_resp_dma; rx_buflen = ISER_RX_LOGIN_SIZE; } else { rx_dma = rx_desc->dma_addr; rx_buflen = ISER_RX_PAYLOAD_SIZE; } - ib_dma_sync_single_for_cpu(ib_conn->device->ib_device, rx_dma, - rx_buflen, DMA_FROM_DEVICE); + ib_dma_sync_single_for_cpu(iser_conn->device->ib_device, rx_dma, + rx_buflen, DMA_FROM_DEVICE); hdr = &rx_desc->iscsi_header; iser_dbg("op 0x%x itt 0x%x dlen %d\n", hdr->opcode, hdr->itt, (int)(rx_xfer_len - ISER_HEADERS_LEN)); - iscsi_iser_recv(ib_conn->iscsi_conn, hdr, rx_desc->data, + iscsi_iser_recv(iser_conn->iscsi_conn, hdr, rx_desc->data, rx_xfer_len - ISER_HEADERS_LEN); - ib_dma_sync_single_for_device(ib_conn->device->ib_device, rx_dma, + ib_dma_sync_single_for_device(iser_conn->device->ib_device, rx_dma, rx_buflen, DMA_FROM_DEVICE); /* decrementing conn->post_recv_buf_count only --after-- freeing the * * 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 */ - ib_conn->post_recv_buf_count--; + iser_conn->post_recv_buf_count--; - if (rx_dma == ib_conn->login_resp_dma) + if (rx_dma == iser_conn->login_resp_dma) return; - outstanding = ib_conn->post_recv_buf_count; - if (outstanding + ib_conn->min_posted_rx <= ib_conn->qp_max_recv_dtos) { - count = min(ib_conn->qp_max_recv_dtos - outstanding, - ib_conn->min_posted_rx); - err = iser_post_recvm(ib_conn, count); + outstanding = iser_conn->post_recv_buf_count; + if (outstanding + iser_conn->min_posted_rx <= iser_conn->qp_max_recv_dtos) { + count = min(iser_conn->qp_max_recv_dtos - outstanding, + iser_conn->min_posted_rx); + err = iser_post_recvm(iser_conn, count); if (err) iser_err("posting %d rx bufs err %d\n", count, err); } } void iser_snd_completion(struct iser_tx_desc *tx_desc, - struct iser_conn *ib_conn) + struct iser_conn *iser_conn) { struct iscsi_task *task; - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; if (tx_desc->type == ISCSI_TX_DATAOUT) { ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr, @@ -625,7 +628,7 @@ void iser_snd_completion(struct iser_tx_desc *tx_desc, tx_desc = NULL; } - atomic_dec(&ib_conn->post_send_buf_count); + atomic_dec(&iser_conn->post_send_buf_count); if (tx_desc && tx_desc->type == ISCSI_TX_CONTROL) { /* this arithmetic is legal by libiscsi dd_data allocation */ @@ -658,7 +661,7 @@ void iser_task_rdma_init(struct iscsi_iser_task *iser_task) void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task) { - struct iser_device *device = iser_task->ib_conn->device; + struct iser_device *device = iser_task->iser_conn->device; int is_rdma_data_aligned = 1; int is_rdma_prot_aligned = 1; int prot_count = scsi_prot_sg_count(iser_task->sc); diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c index 47acd3a..ba09fbb 100644 --- a/drivers/infiniband/ulp/iser/iser_memory.c +++ b/drivers/infiniband/ulp/iser/iser_memory.c @@ -49,7 +49,7 @@ static int iser_start_rdma_unaligned_sg(struct iscsi_iser_task *iser_task, struct iser_data_buf *data_copy, enum iser_data_dir cmd_dir) { - struct ib_device *dev = iser_task->ib_conn->device->ib_device; + struct ib_device *dev = iser_task->iser_conn->device->ib_device; struct scatterlist *sgl = (struct scatterlist *)data->buf; struct scatterlist *sg; char *mem = NULL; @@ -116,7 +116,7 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task, struct ib_device *dev; unsigned long cmd_data_len; - dev = iser_task->ib_conn->device->ib_device; + dev = iser_task->iser_conn->device->ib_device; ib_dma_unmap_sg(dev, &data_copy->sg_single, 1, (cmd_dir == ISER_DIR_OUT) ? @@ -322,7 +322,7 @@ int iser_dma_map_task_data(struct iscsi_iser_task *iser_task, struct ib_device *dev; iser_task->dir[iser_dir] = 1; - dev = iser_task->ib_conn->device->ib_device; + dev = iser_task->iser_conn->device->ib_device; data->dma_nents = ib_dma_map_sg(dev, data->buf, data->size, dma_dir); if (data->dma_nents == 0) { @@ -337,7 +337,7 @@ void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task, { struct ib_device *dev; - dev = iser_task->ib_conn->device->ib_device; + dev = iser_task->iser_conn->device->ib_device; ib_dma_unmap_sg(dev, data->buf, data->size, DMA_FROM_DEVICE); } @@ -348,7 +348,7 @@ static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir, int aligned_len) { - struct iscsi_conn *iscsi_conn = iser_task->ib_conn->iscsi_conn; + struct iscsi_conn *iscsi_conn = iser_task->iser_conn->iscsi_conn; iscsi_conn->fmr_unalign_cnt++; iser_warn("rdma alignment violation (%d/%d aligned) or FMR not supported\n", @@ -377,8 +377,8 @@ static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task, int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir) { - struct iser_conn *ib_conn = iser_task->ib_conn; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = iser_task->iser_conn; + struct iser_device *device = iser_conn->device; struct ib_device *ibdev = device->ib_device; struct iser_data_buf *mem = &iser_task->data[cmd_dir]; struct iser_regd_buf *regd_buf; @@ -418,8 +418,8 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task, (unsigned long)regd_buf->reg.va, (unsigned long)regd_buf->reg.len); } else { /* use FMR for multiple dma entries */ - iser_page_vec_build(mem, ib_conn->fmr.page_vec, ibdev); - err = iser_reg_page_vec(ib_conn, ib_conn->fmr.page_vec, + iser_page_vec_build(mem, iser_conn->fmr.page_vec, ibdev); + err = iser_reg_page_vec(iser_conn, iser_conn->fmr.page_vec, ®d_buf->reg); if (err && err != -EAGAIN) { iser_data_buf_dump(mem, ibdev); @@ -427,12 +427,12 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task, 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->fmr.page_vec->data_size, - ib_conn->fmr.page_vec->length, - ib_conn->fmr.page_vec->offset); - for (i = 0; i < ib_conn->fmr.page_vec->length; i++) + iser_conn->fmr.page_vec->data_size, + iser_conn->fmr.page_vec->length, + iser_conn->fmr.page_vec->offset); + for (i = 0; i < iser_conn->fmr.page_vec->length; i++) iser_err("page_vec[%d] = 0x%llx\n", i, - (unsigned long long) ib_conn->fmr.page_vec->pages[i]); + (unsigned long long)iser_conn->fmr.page_vec->pages[i]); } if (err) return err; @@ -533,7 +533,7 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task, struct fast_reg_descriptor *desc, struct ib_sge *data_sge, struct ib_sge *prot_sge, struct ib_sge *sig_sge) { - struct iser_conn *ib_conn = iser_task->ib_conn; + struct iser_conn *iser_conn = iser_task->iser_conn; struct iser_pi_context *pi_ctx = desc->pi_ctx; struct ib_send_wr sig_wr, inv_wr; struct ib_send_wr *bad_wr, *wr = NULL; @@ -579,7 +579,7 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task, else wr->next = &sig_wr; - ret = ib_post_send(ib_conn->qp, wr, &bad_wr); + ret = ib_post_send(iser_conn->qp, wr, &bad_wr); if (ret) { iser_err("reg_sig_mr failed, ret:%d\n", ret); goto err; @@ -609,8 +609,8 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task, struct ib_sge *sge) { struct fast_reg_descriptor *desc = regd_buf->reg.mem_h; - struct iser_conn *ib_conn = iser_task->ib_conn; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = iser_task->iser_conn; + struct iser_device *device = iser_conn->device; struct ib_device *ibdev = device->ib_device; struct ib_mr *mr; struct ib_fast_reg_page_list *frpl; @@ -677,7 +677,7 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task, else wr->next = &fastreg_wr; - ret = ib_post_send(ib_conn->qp, wr, &bad_wr); + ret = ib_post_send(iser_conn->qp, wr, &bad_wr); if (ret) { iser_err("fast registration failed, ret:%d\n", ret); return ret; @@ -700,8 +700,8 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task, int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir) { - struct iser_conn *ib_conn = iser_task->ib_conn; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = iser_task->iser_conn; + struct iser_device *device = iser_conn->device; struct ib_device *ibdev = device->ib_device; struct iser_data_buf *mem = &iser_task->data[cmd_dir]; struct iser_regd_buf *regd_buf = &iser_task->rdma_regd[cmd_dir]; @@ -724,11 +724,11 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task, if (mem->dma_nents != 1 || scsi_get_prot_op(iser_task->sc) != SCSI_PROT_NORMAL) { - spin_lock_irqsave(&ib_conn->lock, flags); - desc = list_first_entry(&ib_conn->fastreg.pool, + spin_lock_irqsave(&iser_conn->lock, flags); + desc = list_first_entry(&iser_conn->fastreg.pool, struct fast_reg_descriptor, list); list_del(&desc->list); - spin_unlock_irqrestore(&ib_conn->lock, flags); + spin_unlock_irqrestore(&iser_conn->lock, flags); regd_buf->reg.mem_h = desc; } @@ -791,9 +791,9 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task, return 0; err_reg: if (desc) { - spin_lock_irqsave(&ib_conn->lock, flags); - list_add_tail(&desc->list, &ib_conn->fastreg.pool); - spin_unlock_irqrestore(&ib_conn->lock, flags); + spin_lock_irqsave(&iser_conn->lock, flags); + list_add_tail(&desc->list, &iser_conn->fastreg.pool); + spin_unlock_irqrestore(&iser_conn->lock, flags); } return err; diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 3bfec4b..778c166 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -213,19 +213,19 @@ static void iser_free_device_ib_res(struct iser_device *device) * * returns 0 on success, or errno code on failure */ -int iser_create_fmr_pool(struct iser_conn *ib_conn, unsigned cmds_max) +int iser_create_fmr_pool(struct iser_conn *iser_conn, unsigned cmds_max) { - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; struct ib_fmr_pool_param params; int ret = -ENOMEM; - ib_conn->fmr.page_vec = kmalloc(sizeof(*ib_conn->fmr.page_vec) + + iser_conn->fmr.page_vec = kmalloc(sizeof(*iser_conn->fmr.page_vec) + (sizeof(u64)*(ISCSI_ISER_SG_TABLESIZE + 1)), GFP_KERNEL); - if (!ib_conn->fmr.page_vec) + if (!iser_conn->fmr.page_vec) return ret; - ib_conn->fmr.page_vec->pages = (u64 *)(ib_conn->fmr.page_vec + 1); + iser_conn->fmr.page_vec->pages = (u64 *)(iser_conn->fmr.page_vec + 1); params.page_shift = SHIFT_4K; /* when the first/last SG element are not start/end * @@ -241,16 +241,16 @@ int iser_create_fmr_pool(struct iser_conn *ib_conn, unsigned cmds_max) IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ); - ib_conn->fmr.pool = ib_create_fmr_pool(device->pd, ¶ms); - if (!IS_ERR(ib_conn->fmr.pool)) + iser_conn->fmr.pool = ib_create_fmr_pool(device->pd, ¶ms); + if (!IS_ERR(iser_conn->fmr.pool)) return 0; /* no FMR => no need for page_vec */ - kfree(ib_conn->fmr.page_vec); - ib_conn->fmr.page_vec = NULL; + kfree(iser_conn->fmr.page_vec); + iser_conn->fmr.page_vec = NULL; - ret = PTR_ERR(ib_conn->fmr.pool); - ib_conn->fmr.pool = NULL; + ret = PTR_ERR(iser_conn->fmr.pool); + iser_conn->fmr.pool = NULL; if (ret != -ENOSYS) { iser_err("FMR allocation failed, err %d\n", ret); return ret; @@ -263,18 +263,18 @@ int iser_create_fmr_pool(struct iser_conn *ib_conn, unsigned cmds_max) /** * iser_free_fmr_pool - releases the FMR pool and page vec */ -void iser_free_fmr_pool(struct iser_conn *ib_conn) +void iser_free_fmr_pool(struct iser_conn *iser_conn) { iser_info("freeing conn %p fmr pool %p\n", - ib_conn, ib_conn->fmr.pool); + iser_conn, iser_conn->fmr.pool); - if (ib_conn->fmr.pool != NULL) - ib_destroy_fmr_pool(ib_conn->fmr.pool); + if (iser_conn->fmr.pool != NULL) + ib_destroy_fmr_pool(iser_conn->fmr.pool); - ib_conn->fmr.pool = NULL; + iser_conn->fmr.pool = NULL; - kfree(ib_conn->fmr.page_vec); - ib_conn->fmr.page_vec = NULL; + kfree(iser_conn->fmr.page_vec); + iser_conn->fmr.page_vec = NULL; } static int @@ -367,14 +367,14 @@ fast_reg_mr_failure: * for fast registration work requests. * returns 0 on success, or errno code on failure */ -int iser_create_fastreg_pool(struct iser_conn *ib_conn, unsigned cmds_max) +int iser_create_fastreg_pool(struct iser_conn *iser_conn, unsigned cmds_max) { - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; struct fast_reg_descriptor *desc; int i, ret; - INIT_LIST_HEAD(&ib_conn->fastreg.pool); - ib_conn->fastreg.pool_size = 0; + INIT_LIST_HEAD(&iser_conn->fastreg.pool); + iser_conn->fastreg.pool_size = 0; for (i = 0; i < cmds_max; i++) { desc = kzalloc(sizeof(*desc), GFP_KERNEL); if (!desc) { @@ -384,7 +384,7 @@ int iser_create_fastreg_pool(struct iser_conn *ib_conn, unsigned cmds_max) } ret = iser_create_fastreg_desc(device->ib_device, device->pd, - ib_conn->pi_support, desc); + iser_conn->pi_support, desc); if (ret) { iser_err("Failed to create fastreg descriptor err=%d\n", ret); @@ -392,31 +392,31 @@ int iser_create_fastreg_pool(struct iser_conn *ib_conn, unsigned cmds_max) goto err; } - list_add_tail(&desc->list, &ib_conn->fastreg.pool); - ib_conn->fastreg.pool_size++; + list_add_tail(&desc->list, &iser_conn->fastreg.pool); + iser_conn->fastreg.pool_size++; } return 0; err: - iser_free_fastreg_pool(ib_conn); + iser_free_fastreg_pool(iser_conn); return ret; } /** * iser_free_fastreg_pool - releases the pool of fast_reg descriptors */ -void iser_free_fastreg_pool(struct iser_conn *ib_conn) +void iser_free_fastreg_pool(struct iser_conn *iser_conn) { struct fast_reg_descriptor *desc, *tmp; int i = 0; - if (list_empty(&ib_conn->fastreg.pool)) + if (list_empty(&iser_conn->fastreg.pool)) return; - iser_info("freeing conn %p fr pool\n", ib_conn); + iser_info("freeing conn %p fr pool\n", iser_conn); - list_for_each_entry_safe(desc, tmp, &ib_conn->fastreg.pool, list) { + list_for_each_entry_safe(desc, tmp, &iser_conn->fastreg.pool, list) { list_del(&desc->list); ib_free_fast_reg_page_list(desc->data_frpl); ib_dereg_mr(desc->data_mr); @@ -430,9 +430,9 @@ void iser_free_fastreg_pool(struct iser_conn *ib_conn) ++i; } - if (i < ib_conn->fastreg.pool_size) + if (i < iser_conn->fastreg.pool_size) iser_warn("pool still has %d regions registered\n", - ib_conn->fastreg.pool_size - i); + iser_conn->fastreg.pool_size - i); } /** @@ -440,16 +440,16 @@ void iser_free_fastreg_pool(struct iser_conn *ib_conn) * * returns 0 on success, -1 on failure */ -static int iser_create_ib_conn_res(struct iser_conn *ib_conn) +static int iser_create_ib_conn_res(struct iser_conn *iser_conn) { struct iser_device *device; struct ib_qp_init_attr init_attr; int ret = -ENOMEM; int index, min_index = 0; - BUG_ON(ib_conn->device == NULL); + BUG_ON(iser_conn->device == NULL); - device = ib_conn->device; + device = iser_conn->device; memset(&init_attr, 0, sizeof init_attr); @@ -461,10 +461,10 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn) min_index = index; device->cq_active_qps[min_index]++; mutex_unlock(&ig.connlist_mutex); - iser_info("cq index %d used for ib_conn %p\n", min_index, ib_conn); + iser_info("cq index %d used for iser_conn %p\n", min_index, iser_conn); init_attr.event_handler = iser_qp_event_callback; - init_attr.qp_context = (void *)ib_conn; + init_attr.qp_context = (void *)iser_conn; init_attr.send_cq = device->tx_cq[min_index]; init_attr.recv_cq = device->rx_cq[min_index]; init_attr.cap.max_recv_wr = ISER_QP_MAX_RECV_DTOS; @@ -472,21 +472,21 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn) init_attr.cap.max_recv_sge = 1; init_attr.sq_sig_type = IB_SIGNAL_REQ_WR; init_attr.qp_type = IB_QPT_RC; - if (ib_conn->pi_support) { + if (iser_conn->pi_support) { init_attr.cap.max_send_wr = ISER_QP_SIG_MAX_REQ_DTOS; init_attr.create_flags |= IB_QP_CREATE_SIGNATURE_EN; } else { init_attr.cap.max_send_wr = ISER_QP_MAX_REQ_DTOS; } - ret = rdma_create_qp(ib_conn->cma_id, device->pd, &init_attr); + ret = rdma_create_qp(iser_conn->cma_id, device->pd, &init_attr); if (ret) goto out_err; - ib_conn->qp = ib_conn->cma_id->qp; + iser_conn->qp = iser_conn->cma_id->qp; iser_info("setting conn %p cma_id %p qp %p\n", - ib_conn, ib_conn->cma_id, - ib_conn->cma_id->qp); + iser_conn, iser_conn->cma_id, + iser_conn->cma_id->qp); return ret; out_err: @@ -497,25 +497,25 @@ out_err: /** * releases the QP object */ -static void iser_free_ib_conn_res(struct iser_conn *ib_conn) +static void iser_free_ib_conn_res(struct iser_conn *iser_conn) { int cq_index; - BUG_ON(ib_conn == NULL); + BUG_ON(iser_conn == NULL); iser_info("freeing conn %p cma_id %p qp %p\n", - ib_conn, ib_conn->cma_id, - ib_conn->qp); + iser_conn, iser_conn->cma_id, + iser_conn->qp); /* qp is created only once both addr & route are resolved */ - if (ib_conn->qp != NULL) { - cq_index = ((struct iser_cq_desc *)ib_conn->qp->recv_cq->cq_context)->cq_index; - ib_conn->device->cq_active_qps[cq_index]--; + if (iser_conn->qp != NULL) { + cq_index = ((struct iser_cq_desc *)iser_conn->qp->recv_cq->cq_context)->cq_index; + iser_conn->device->cq_active_qps[cq_index]--; - rdma_destroy_qp(ib_conn->cma_id); + rdma_destroy_qp(iser_conn->cma_id); } - ib_conn->qp = NULL; + iser_conn->qp = NULL; } /** @@ -572,75 +572,77 @@ static void iser_device_try_release(struct iser_device *device) /** * Called with state mutex held **/ -static int iser_conn_state_comp_exch(struct iser_conn *ib_conn, - enum iser_ib_conn_state comp, - enum iser_ib_conn_state exch) +static int iser_conn_state_comp_exch(struct iser_conn *iser_conn, + enum iser_conn_state comp, + enum iser_conn_state exch) { int ret; - if ((ret = (ib_conn->state == comp))) - ib_conn->state = exch; + ret = (iser_conn->state == comp); + if (ret) + iser_conn->state = exch; + return ret; } void iser_release_work(struct work_struct *work) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; int rc; - ib_conn = container_of(work, struct iser_conn, release_work); + iser_conn = container_of(work, struct iser_conn, release_work); /* wait for .conn_stop callback */ - rc = wait_for_completion_timeout(&ib_conn->stop_completion, 30 * HZ); + rc = wait_for_completion_timeout(&iser_conn->stop_completion, 30 * HZ); WARN_ON(rc == 0); /* wait for the qp`s post send and post receive buffers to empty */ - rc = wait_for_completion_timeout(&ib_conn->flush_completion, 30 * HZ); + rc = wait_for_completion_timeout(&iser_conn->flush_completion, 30 * HZ); WARN_ON(rc == 0); - ib_conn->state = ISER_CONN_DOWN; + iser_conn->state = ISER_CONN_DOWN; - mutex_lock(&ib_conn->state_mutex); - ib_conn->state = ISER_CONN_DOWN; - mutex_unlock(&ib_conn->state_mutex); + mutex_lock(&iser_conn->state_mutex); + iser_conn->state = ISER_CONN_DOWN; + mutex_unlock(&iser_conn->state_mutex); - iser_conn_release(ib_conn); + iser_conn_release(iser_conn); } /** * Frees all conn objects and deallocs conn descriptor */ -void iser_conn_release(struct iser_conn *ib_conn) +void iser_conn_release(struct iser_conn *iser_conn) { - struct iser_device *device = ib_conn->device; + struct iser_device *device = iser_conn->device; mutex_lock(&ig.connlist_mutex); - list_del(&ib_conn->conn_list); + list_del(&iser_conn->conn_list); mutex_unlock(&ig.connlist_mutex); - mutex_lock(&ib_conn->state_mutex); - BUG_ON(ib_conn->state != ISER_CONN_DOWN); + mutex_lock(&iser_conn->state_mutex); + BUG_ON(iser_conn->state != ISER_CONN_DOWN); - iser_free_rx_descriptors(ib_conn); - iser_free_ib_conn_res(ib_conn); - ib_conn->device = NULL; + iser_free_rx_descriptors(iser_conn); + iser_free_ib_conn_res(iser_conn); + iser_conn->device = NULL; /* on EVENT_ADDR_ERROR there's no device yet for this conn */ if (device != NULL) iser_device_try_release(device); - mutex_unlock(&ib_conn->state_mutex); + mutex_unlock(&iser_conn->state_mutex); /* if cma handler context, the caller actually destroy the id */ - if (ib_conn->cma_id != NULL) { - rdma_destroy_id(ib_conn->cma_id); - ib_conn->cma_id = NULL; + if (iser_conn->cma_id != NULL) { + rdma_destroy_id(iser_conn->cma_id); + iser_conn->cma_id = NULL; } - kfree(ib_conn); + kfree(iser_conn); } /** * triggers start of the disconnect procedures and wait for them to be done */ -void iser_conn_terminate(struct iser_conn *ib_conn) +void iser_conn_terminate(struct iser_conn *iser_conn) { int err = 0; @@ -649,11 +651,11 @@ void iser_conn_terminate(struct iser_conn *ib_conn) * the QP state to ERROR */ - iser_conn_state_comp_exch(ib_conn, ISER_CONN_UP, ISER_CONN_TERMINATING); - err = rdma_disconnect(ib_conn->cma_id); + iser_conn_state_comp_exch(iser_conn, ISER_CONN_UP, ISER_CONN_TERMINATING); + err = rdma_disconnect(iser_conn->cma_id); if (err) iser_err("Failed to disconnect, conn: 0x%p err %d\n", - ib_conn,err); + iser_conn, err); } /** @@ -661,10 +663,10 @@ void iser_conn_terminate(struct iser_conn *ib_conn) **/ static void iser_connect_error(struct rdma_cm_id *cma_id) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; - ib_conn = (struct iser_conn *)cma_id->context; - ib_conn->state = ISER_CONN_DOWN; + iser_conn = (struct iser_conn *)cma_id->context; + iser_conn->state = ISER_CONN_DOWN; } /** @@ -673,11 +675,11 @@ static void iser_connect_error(struct rdma_cm_id *cma_id) static void iser_addr_handler(struct rdma_cm_id *cma_id) { struct iser_device *device; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; int ret; - ib_conn = (struct iser_conn *)cma_id->context; - if (ib_conn->state != ISER_CONN_PENDING) + iser_conn = (struct iser_conn *)cma_id->context; + if (iser_conn->state != ISER_CONN_PENDING) /* bailout */ return; @@ -688,7 +690,7 @@ static void iser_addr_handler(struct rdma_cm_id *cma_id) return; } - ib_conn->device = device; + iser_conn->device = device; /* connection T10-PI support */ if (iser_pi_enable) { @@ -696,10 +698,10 @@ static void iser_addr_handler(struct rdma_cm_id *cma_id) IB_DEVICE_SIGNATURE_HANDOVER)) { iser_warn("T10-PI requested but not supported on %s, " "continue without T10-PI\n", - ib_conn->device->ib_device->name); - ib_conn->pi_support = false; + iser_conn->device->ib_device->name); + iser_conn->pi_support = false; } else { - ib_conn->pi_support = true; + iser_conn->pi_support = true; } } @@ -719,10 +721,10 @@ static void iser_route_handler(struct rdma_cm_id *cma_id) struct rdma_conn_param conn_param; int ret; struct iser_cm_hdr req_hdr; - struct iser_conn *ib_conn = (struct iser_conn *)cma_id->context; - struct iser_device *device = ib_conn->device; + struct iser_conn *iser_conn = (struct iser_conn *)cma_id->context; + struct iser_device *device = iser_conn->device; - if (ib_conn->state != ISER_CONN_PENDING) + if (iser_conn->state != ISER_CONN_PENDING) /* bailout */ return; @@ -755,34 +757,34 @@ failure: static void iser_connected_handler(struct rdma_cm_id *cma_id) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; struct ib_qp_attr attr; struct ib_qp_init_attr init_attr; - ib_conn = (struct iser_conn *)cma_id->context; - if (ib_conn->state != ISER_CONN_PENDING) + iser_conn = (struct iser_conn *)cma_id->context; + if (iser_conn->state != ISER_CONN_PENDING) /* bailout */ return; (void)ib_query_qp(cma_id->qp, &attr, ~0, &init_attr); iser_info("remote qpn:%x my qpn:%x\n", attr.dest_qp_num, cma_id->qp->qp_num); - ib_conn->state = ISER_CONN_UP; - complete(&ib_conn->up_completion); + iser_conn->state = ISER_CONN_UP; + complete(&iser_conn->up_completion); } static void iser_disconnected_handler(struct rdma_cm_id *cma_id) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; - ib_conn = (struct iser_conn *)cma_id->context; + iser_conn = (struct iser_conn *)cma_id->context; /* getting here when the state is UP means that the conn is being * * terminated asynchronously from the iSCSI layer's perspective. */ - if (iser_conn_state_comp_exch(ib_conn, ISER_CONN_UP, - ISER_CONN_TERMINATING)){ - if (ib_conn->iscsi_conn) - iscsi_conn_failure(ib_conn->iscsi_conn, ISCSI_ERR_CONN_FAILED); + if (iser_conn_state_comp_exch(iser_conn, ISER_CONN_UP, + ISER_CONN_TERMINATING)){ + if (iser_conn->iscsi_conn) + iscsi_conn_failure(iser_conn->iscsi_conn, ISCSI_ERR_CONN_FAILED); else iser_err("iscsi_iser connection isn't bound\n"); } @@ -791,21 +793,21 @@ static void iser_disconnected_handler(struct rdma_cm_id *cma_id) * block also exists in iser_handle_comp_error(), but it is needed here * for cases of no flushes at all, e.g. discovery over rdma. */ - if (ib_conn->post_recv_buf_count == 0 && - (atomic_read(&ib_conn->post_send_buf_count) == 0)) { - complete(&ib_conn->flush_completion); + if (iser_conn->post_recv_buf_count == 0 && + (atomic_read(&iser_conn->post_send_buf_count) == 0)) { + complete(&iser_conn->flush_completion); } } static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) { - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; - ib_conn = (struct iser_conn *)cma_id->context; + iser_conn = (struct iser_conn *)cma_id->context; iser_info("event %d status %d conn %p id %p\n", event->event, event->status, cma_id->context, cma_id); - mutex_lock(&ib_conn->state_mutex); + mutex_lock(&iser_conn->state_mutex); switch (event->event) { case RDMA_CM_EVENT_ADDR_RESOLVED: iser_addr_handler(cma_id); @@ -833,82 +835,82 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve iser_err("Unexpected RDMA CM event (%d)\n", event->event); break; } - mutex_unlock(&ib_conn->state_mutex); + mutex_unlock(&iser_conn->state_mutex); return 0; } -void iser_conn_init(struct iser_conn *ib_conn) +void iser_conn_init(struct iser_conn *iser_conn) { - ib_conn->state = ISER_CONN_INIT; - ib_conn->post_recv_buf_count = 0; - atomic_set(&ib_conn->post_send_buf_count, 0); - init_completion(&ib_conn->stop_completion); - init_completion(&ib_conn->flush_completion); - init_completion(&ib_conn->up_completion); - INIT_LIST_HEAD(&ib_conn->conn_list); - spin_lock_init(&ib_conn->lock); - mutex_init(&ib_conn->state_mutex); + iser_conn->state = ISER_CONN_INIT; + iser_conn->post_recv_buf_count = 0; + atomic_set(&iser_conn->post_send_buf_count, 0); + init_completion(&iser_conn->stop_completion); + init_completion(&iser_conn->flush_completion); + init_completion(&iser_conn->up_completion); + INIT_LIST_HEAD(&iser_conn->conn_list); + spin_lock_init(&iser_conn->lock); + mutex_init(&iser_conn->state_mutex); } /** * starts the process of connecting to the target * sleeps until the connection is established or rejected */ -int iser_connect(struct iser_conn *ib_conn, +int iser_connect(struct iser_conn *iser_conn, struct sockaddr *src_addr, struct sockaddr *dst_addr, int non_blocking) { int err = 0; - mutex_lock(&ib_conn->state_mutex); + mutex_lock(&iser_conn->state_mutex); - sprintf(ib_conn->name, "%pISp", dst_addr); + sprintf(iser_conn->name, "%pISp", dst_addr); - iser_info("connecting to: %s\n", ib_conn->name); + iser_info("connecting to: %s\n", iser_conn->name); /* the device is known only --after-- address resolution */ - ib_conn->device = NULL; + iser_conn->device = NULL; - ib_conn->state = ISER_CONN_PENDING; + iser_conn->state = ISER_CONN_PENDING; - ib_conn->cma_id = rdma_create_id(iser_cma_handler, - (void *)ib_conn, + iser_conn->cma_id = rdma_create_id(iser_cma_handler, + (void *)iser_conn, RDMA_PS_TCP, IB_QPT_RC); - if (IS_ERR(ib_conn->cma_id)) { - err = PTR_ERR(ib_conn->cma_id); + if (IS_ERR(iser_conn->cma_id)) { + err = PTR_ERR(iser_conn->cma_id); iser_err("rdma_create_id failed: %d\n", err); goto id_failure; } - err = rdma_resolve_addr(ib_conn->cma_id, src_addr, dst_addr, 1000); + err = rdma_resolve_addr(iser_conn->cma_id, src_addr, dst_addr, 1000); if (err) { iser_err("rdma_resolve_addr failed: %d\n", err); goto addr_failure; } if (!non_blocking) { - wait_for_completion_interruptible(&ib_conn->up_completion); + wait_for_completion_interruptible(&iser_conn->up_completion); - if (ib_conn->state != ISER_CONN_UP) { + if (iser_conn->state != ISER_CONN_UP) { err = -EIO; goto connect_failure; } } - mutex_unlock(&ib_conn->state_mutex); + mutex_unlock(&iser_conn->state_mutex); mutex_lock(&ig.connlist_mutex); - list_add(&ib_conn->conn_list, &ig.connlist); + list_add(&iser_conn->conn_list, &ig.connlist); mutex_unlock(&ig.connlist_mutex); return 0; id_failure: - ib_conn->cma_id = NULL; + iser_conn->cma_id = NULL; addr_failure: - ib_conn->state = ISER_CONN_DOWN; + iser_conn->state = ISER_CONN_DOWN; connect_failure: - mutex_unlock(&ib_conn->state_mutex); - iser_conn_release(ib_conn); + mutex_unlock(&iser_conn->state_mutex); + iser_conn_release(iser_conn); return err; } @@ -917,7 +919,7 @@ connect_failure: * * returns: 0 on success, errno code on failure */ -int iser_reg_page_vec(struct iser_conn *ib_conn, +int iser_reg_page_vec(struct iser_conn *iser_conn, struct iser_page_vec *page_vec, struct iser_mem_reg *mem_reg) { @@ -929,7 +931,7 @@ int iser_reg_page_vec(struct iser_conn *ib_conn, page_list = page_vec->pages; io_addr = page_list[0]; - mem = ib_fmr_pool_map_phys(ib_conn->fmr.pool, + mem = ib_fmr_pool_map_phys(iser_conn->fmr.pool, page_list, page_vec->length, io_addr); @@ -987,7 +989,7 @@ void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task, enum iser_data_dir cmd_dir) { struct iser_mem_reg *reg = &iser_task->rdma_regd[cmd_dir].reg; - struct iser_conn *ib_conn = iser_task->ib_conn; + struct iser_conn *iser_conn = iser_task->iser_conn; struct fast_reg_descriptor *desc = reg->mem_h; if (!reg->is_mr) @@ -995,61 +997,61 @@ void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task, reg->mem_h = NULL; reg->is_mr = 0; - spin_lock_bh(&ib_conn->lock); - list_add_tail(&desc->list, &ib_conn->fastreg.pool); - spin_unlock_bh(&ib_conn->lock); + spin_lock_bh(&iser_conn->lock); + list_add_tail(&desc->list, &iser_conn->fastreg.pool); + spin_unlock_bh(&iser_conn->lock); } -int iser_post_recvl(struct iser_conn *ib_conn) +int iser_post_recvl(struct iser_conn *iser_conn) { struct ib_recv_wr rx_wr, *rx_wr_failed; struct ib_sge sge; int ib_ret; - sge.addr = ib_conn->login_resp_dma; + sge.addr = iser_conn->login_resp_dma; sge.length = ISER_RX_LOGIN_SIZE; - sge.lkey = ib_conn->device->mr->lkey; + sge.lkey = iser_conn->device->mr->lkey; - rx_wr.wr_id = (unsigned long)ib_conn->login_resp_buf; + rx_wr.wr_id = (unsigned long)iser_conn->login_resp_buf; rx_wr.sg_list = &sge; rx_wr.num_sge = 1; rx_wr.next = NULL; - ib_conn->post_recv_buf_count++; - ib_ret = ib_post_recv(ib_conn->qp, &rx_wr, &rx_wr_failed); + iser_conn->post_recv_buf_count++; + ib_ret = ib_post_recv(iser_conn->qp, &rx_wr, &rx_wr_failed); if (ib_ret) { iser_err("ib_post_recv failed ret=%d\n", ib_ret); - ib_conn->post_recv_buf_count--; + iser_conn->post_recv_buf_count--; } return ib_ret; } -int iser_post_recvm(struct iser_conn *ib_conn, int count) +int iser_post_recvm(struct iser_conn *iser_conn, int count) { struct ib_recv_wr *rx_wr, *rx_wr_failed; int i, ib_ret; - unsigned int my_rx_head = ib_conn->rx_desc_head; + unsigned int my_rx_head = iser_conn->rx_desc_head; struct iser_rx_desc *rx_desc; - for (rx_wr = ib_conn->rx_wr, i = 0; i < count; i++, rx_wr++) { - rx_desc = &ib_conn->rx_descs[my_rx_head]; + for (rx_wr = iser_conn->rx_wr, i = 0; i < count; i++, rx_wr++) { + rx_desc = &iser_conn->rx_descs[my_rx_head]; rx_wr->wr_id = (unsigned long)rx_desc; rx_wr->sg_list = &rx_desc->rx_sg; rx_wr->num_sge = 1; rx_wr->next = rx_wr + 1; - my_rx_head = (my_rx_head + 1) & ib_conn->qp_max_recv_dtos_mask; + my_rx_head = (my_rx_head + 1) & iser_conn->qp_max_recv_dtos_mask; } rx_wr--; rx_wr->next = NULL; /* mark end of work requests list */ - ib_conn->post_recv_buf_count += count; - ib_ret = ib_post_recv(ib_conn->qp, ib_conn->rx_wr, &rx_wr_failed); + iser_conn->post_recv_buf_count += count; + ib_ret = ib_post_recv(iser_conn->qp, iser_conn->rx_wr, &rx_wr_failed); if (ib_ret) { iser_err("ib_post_recv failed ret=%d\n", ib_ret); - ib_conn->post_recv_buf_count -= count; + iser_conn->post_recv_buf_count -= count; } else - ib_conn->rx_desc_head = my_rx_head; + iser_conn->rx_desc_head = my_rx_head; return ib_ret; } @@ -1059,13 +1061,14 @@ int iser_post_recvm(struct iser_conn *ib_conn, int count) * * returns 0 on success, -1 on failure */ -int iser_post_send(struct iser_conn *ib_conn, struct iser_tx_desc *tx_desc) +int iser_post_send(struct iser_conn *iser_conn, struct iser_tx_desc *tx_desc) { int ib_ret; struct ib_send_wr send_wr, *send_wr_failed; - ib_dma_sync_single_for_device(ib_conn->device->ib_device, - tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE); + ib_dma_sync_single_for_device(iser_conn->device->ib_device, + tx_desc->dma_addr, ISER_HEADERS_LEN, + DMA_TO_DEVICE); send_wr.next = NULL; send_wr.wr_id = (unsigned long)tx_desc; @@ -1074,37 +1077,37 @@ int iser_post_send(struct iser_conn *ib_conn, struct iser_tx_desc *tx_desc) send_wr.opcode = IB_WR_SEND; send_wr.send_flags = IB_SEND_SIGNALED; - atomic_inc(&ib_conn->post_send_buf_count); + atomic_inc(&iser_conn->post_send_buf_count); - ib_ret = ib_post_send(ib_conn->qp, &send_wr, &send_wr_failed); + ib_ret = ib_post_send(iser_conn->qp, &send_wr, &send_wr_failed); if (ib_ret) { iser_err("ib_post_send failed, ret:%d\n", ib_ret); - atomic_dec(&ib_conn->post_send_buf_count); + atomic_dec(&iser_conn->post_send_buf_count); } return ib_ret; } static void iser_handle_comp_error(struct iser_tx_desc *desc, - struct iser_conn *ib_conn) + struct iser_conn *iser_conn) { if (desc && desc->type == ISCSI_TX_DATAOUT) kmem_cache_free(ig.desc_cache, desc); - if (ib_conn->post_recv_buf_count == 0 && - atomic_read(&ib_conn->post_send_buf_count) == 0) { + if (iser_conn->post_recv_buf_count == 0 && + atomic_read(&iser_conn->post_send_buf_count) == 0) { /** * getting here when the state is UP means that the conn is * being terminated asynchronously from the iSCSI layer's * perspective. It is safe to peek at the connection state * since iscsi_conn_failure is allowed to be called twice. **/ - if (ib_conn->state == ISER_CONN_UP) - iscsi_conn_failure(ib_conn->iscsi_conn, + if (iser_conn->state == ISER_CONN_UP) + iscsi_conn_failure(iser_conn->iscsi_conn, ISCSI_ERR_CONN_FAILED); /* no more non completed posts to the QP, complete the * termination process w.o worrying on disconnect event */ - complete(&ib_conn->flush_completion); + complete(&iser_conn->flush_completion); } } @@ -1113,15 +1116,15 @@ static int iser_drain_tx_cq(struct iser_device *device, int cq_index) struct ib_cq *cq = device->tx_cq[cq_index]; struct ib_wc wc; struct iser_tx_desc *tx_desc; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; int completed_tx = 0; while (ib_poll_cq(cq, 1, &wc) == 1) { tx_desc = (struct iser_tx_desc *) (unsigned long) wc.wr_id; - ib_conn = wc.qp->qp_context; + iser_conn = wc.qp->qp_context; if (wc.status == IB_WC_SUCCESS) { if (wc.opcode == IB_WC_SEND) - iser_snd_completion(tx_desc, ib_conn); + iser_snd_completion(tx_desc, iser_conn); else iser_err("expected opcode %d got %d\n", IB_WC_SEND, wc.opcode); @@ -1129,8 +1132,8 @@ static int iser_drain_tx_cq(struct iser_device *device, int cq_index) iser_err("tx id %llx status %d vend_err %x\n", wc.wr_id, wc.status, wc.vendor_err); if (wc.wr_id != ISER_FASTREG_LI_WRID) { - atomic_dec(&ib_conn->post_send_buf_count); - iser_handle_comp_error(tx_desc, ib_conn); + atomic_dec(&iser_conn->post_send_buf_count); + iser_handle_comp_error(tx_desc, iser_conn); } } completed_tx++; @@ -1148,7 +1151,7 @@ static void iser_cq_tasklet_fn(unsigned long data) struct ib_wc wc; struct iser_rx_desc *desc; unsigned long xfer_len; - struct iser_conn *ib_conn; + struct iser_conn *iser_conn; int completed_tx, completed_rx = 0; /* First do tx drain, so in a case where we have rx flushes and a successful @@ -1159,11 +1162,11 @@ static void iser_cq_tasklet_fn(unsigned long data) while (ib_poll_cq(cq, 1, &wc) == 1) { desc = (struct iser_rx_desc *) (unsigned long) wc.wr_id; BUG_ON(desc == NULL); - ib_conn = wc.qp->qp_context; + iser_conn = wc.qp->qp_context; if (wc.status == IB_WC_SUCCESS) { if (wc.opcode == IB_WC_RECV) { xfer_len = (unsigned long)wc.byte_len; - iser_rcv_completion(desc, xfer_len, ib_conn); + iser_rcv_completion(desc, xfer_len, iser_conn); } else iser_err("expected opcode %d got %d\n", IB_WC_RECV, wc.opcode); @@ -1171,8 +1174,8 @@ static void iser_cq_tasklet_fn(unsigned long data) if (wc.status != IB_WC_WR_FLUSH_ERR) iser_err("rx id %llx status %d vend_err %x\n", wc.wr_id, wc.status, wc.vendor_err); - ib_conn->post_recv_buf_count--; - iser_handle_comp_error(NULL, ib_conn); + iser_conn->post_recv_buf_count--; + iser_handle_comp_error(NULL, iser_conn); } completed_rx++; if (!(completed_rx & 63)) -- cgit v0.10.2