isert_rdma_accept(struct isert_conn *isert_conn);
struct rdma_cm_id *isert_setup_id(struct isert_np *isert_np);
+static void isert_release_work(struct work_struct *work);
+
static inline bool
isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd)
{
isert_err("conn %p event: %d\n", isert_conn, e->event);
switch (e->event) {
case IB_EVENT_COMM_EST:
- rdma_notify(isert_conn->conn_cm_id, IB_EVENT_COMM_EST);
+ rdma_notify(isert_conn->cm_id, IB_EVENT_COMM_EST);
break;
case IB_EVENT_QP_LAST_WQE_REACHED:
isert_warn("Reached TX IB_EVENT_QP_LAST_WQE_REACHED\n");
static struct isert_comp *
isert_comp_get(struct isert_conn *isert_conn)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct isert_comp *comp;
int i, min = 0;
struct isert_comp *comp,
struct rdma_cm_id *cma_id)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_qp_init_attr attr;
int ret;
int ret;
comp = isert_comp_get(isert_conn);
- isert_conn->conn_qp = isert_create_qp(isert_conn, comp, cma_id);
- if (IS_ERR(isert_conn->conn_qp)) {
- ret = PTR_ERR(isert_conn->conn_qp);
+ isert_conn->qp = isert_create_qp(isert_conn, comp, cma_id);
+ if (IS_ERR(isert_conn->qp)) {
+ ret = PTR_ERR(isert_conn->qp);
goto err;
}
static int
isert_alloc_rx_descriptors(struct isert_conn *isert_conn)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct iser_rx_desc *rx_desc;
struct ib_sge *rx_sg;
u64 dma_addr;
int i, j;
- isert_conn->conn_rx_descs = kzalloc(ISERT_QP_MAX_RECV_DTOS *
+ isert_conn->rx_descs = kzalloc(ISERT_QP_MAX_RECV_DTOS *
sizeof(struct iser_rx_desc), GFP_KERNEL);
- if (!isert_conn->conn_rx_descs)
+ if (!isert_conn->rx_descs)
goto fail;
- rx_desc = isert_conn->conn_rx_descs;
+ rx_desc = isert_conn->rx_descs;
for (i = 0; i < ISERT_QP_MAX_RECV_DTOS; i++, rx_desc++) {
dma_addr = ib_dma_map_single(ib_dev, (void *)rx_desc,
rx_sg->lkey = device->mr->lkey;
}
- isert_conn->conn_rx_desc_head = 0;
+ isert_conn->rx_desc_head = 0;
return 0;
dma_map_fail:
- rx_desc = isert_conn->conn_rx_descs;
+ rx_desc = isert_conn->rx_descs;
for (j = 0; j < i; j++, rx_desc++) {
ib_dma_unmap_single(ib_dev, rx_desc->dma_addr,
ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
}
- kfree(isert_conn->conn_rx_descs);
- isert_conn->conn_rx_descs = NULL;
+ kfree(isert_conn->rx_descs);
+ isert_conn->rx_descs = NULL;
fail:
isert_err("conn %p failed to allocate rx descriptors\n", isert_conn);
static void
isert_free_rx_descriptors(struct isert_conn *isert_conn)
{
- struct ib_device *ib_dev = isert_conn->conn_device->ib_device;
+ struct ib_device *ib_dev = isert_conn->device->ib_device;
struct iser_rx_desc *rx_desc;
int i;
- if (!isert_conn->conn_rx_descs)
+ if (!isert_conn->rx_descs)
return;
- rx_desc = isert_conn->conn_rx_descs;
+ rx_desc = isert_conn->rx_descs;
for (i = 0; i < ISERT_QP_MAX_RECV_DTOS; i++, rx_desc++) {
ib_dma_unmap_single(ib_dev, rx_desc->dma_addr,
ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
}
- kfree(isert_conn->conn_rx_descs);
- isert_conn->conn_rx_descs = NULL;
+ kfree(isert_conn->rx_descs);
+ isert_conn->rx_descs = NULL;
}
static void isert_cq_work(struct work_struct *);
static int
isert_create_device_ib_res(struct isert_device *device)
{
- struct ib_device *ib_dev = device->ib_device;
struct ib_device_attr *dev_attr;
- int ret = 0;
+ int ret;
dev_attr = &device->dev_attr;
- ret = isert_query_device(ib_dev, dev_attr);
+ ret = isert_query_device(device->ib_device, dev_attr);
if (ret)
return ret;
}
static void
-isert_device_try_release(struct isert_device *device)
+isert_device_put(struct isert_device *device)
{
mutex_lock(&device_list_mutex);
device->refcount--;
}
static struct isert_device *
-isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id)
+isert_device_get(struct rdma_cm_id *cma_id)
{
struct isert_device *device;
int ret;
struct fast_reg_descriptor *fr_desc, *tmp;
int i = 0;
- if (list_empty(&isert_conn->conn_fr_pool))
+ if (list_empty(&isert_conn->fr_pool))
return;
isert_info("Freeing conn %p fastreg pool", isert_conn);
list_for_each_entry_safe(fr_desc, tmp,
- &isert_conn->conn_fr_pool, list) {
+ &isert_conn->fr_pool, list) {
list_del(&fr_desc->list);
ib_free_fast_reg_page_list(fr_desc->data_frpl);
ib_dereg_mr(fr_desc->data_mr);
++i;
}
- if (i < isert_conn->conn_fr_pool_size)
+ if (i < isert_conn->fr_pool_size)
isert_warn("Pool still has %d regions registered\n",
- isert_conn->conn_fr_pool_size - i);
+ isert_conn->fr_pool_size - i);
}
static int
return 0;
err_prot_mr:
- ib_dereg_mr(desc->pi_ctx->prot_mr);
+ ib_dereg_mr(pi_ctx->prot_mr);
err_prot_frpl:
- ib_free_fast_reg_page_list(desc->pi_ctx->prot_frpl);
+ ib_free_fast_reg_page_list(pi_ctx->prot_frpl);
err_pi_ctx:
- kfree(desc->pi_ctx);
+ kfree(pi_ctx);
return ret;
}
isert_conn_create_fastreg_pool(struct isert_conn *isert_conn)
{
struct fast_reg_descriptor *fr_desc;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct se_session *se_sess = isert_conn->conn->sess->se_sess;
struct se_node_acl *se_nacl = se_sess->se_node_acl;
int i, ret, tag_num;
tag_num = max_t(u32, ISCSIT_MIN_TAGS, se_nacl->queue_depth);
tag_num = (tag_num * 2) + ISCSIT_EXTRA_TAGS;
- isert_conn->conn_fr_pool_size = 0;
+ isert_conn->fr_pool_size = 0;
for (i = 0; i < tag_num; i++) {
fr_desc = kzalloc(sizeof(*fr_desc), GFP_KERNEL);
if (!fr_desc) {
goto err;
}
- list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool);
- isert_conn->conn_fr_pool_size++;
+ list_add_tail(&fr_desc->list, &isert_conn->fr_pool);
+ isert_conn->fr_pool_size++;
}
isert_dbg("Creating conn %p fastreg pool size=%d",
- isert_conn, isert_conn->conn_fr_pool_size);
+ isert_conn, isert_conn->fr_pool_size);
return 0;
return ret;
}
-static int
-isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
+static void
+isert_init_conn(struct isert_conn *isert_conn)
{
- struct isert_np *isert_np = cma_id->context;
- struct iscsi_np *np = isert_np->np;
- struct isert_conn *isert_conn;
- struct isert_device *device;
- struct ib_device *ib_dev = cma_id->device;
- int ret = 0;
-
- spin_lock_bh(&np->np_thread_lock);
- if (!np->enabled) {
- spin_unlock_bh(&np->np_thread_lock);
- isert_dbg("iscsi_np is not enabled, reject connect request\n");
- return rdma_reject(cma_id, NULL, 0);
- }
- spin_unlock_bh(&np->np_thread_lock);
-
- isert_dbg("cma_id: %p, portal: %p\n",
- cma_id, cma_id->context);
-
- isert_conn = kzalloc(sizeof(struct isert_conn), GFP_KERNEL);
- if (!isert_conn) {
- isert_err("Unable to allocate isert_conn\n");
- return -ENOMEM;
- }
isert_conn->state = ISER_CONN_INIT;
- INIT_LIST_HEAD(&isert_conn->conn_accept_node);
- init_completion(&isert_conn->conn_login_comp);
+ INIT_LIST_HEAD(&isert_conn->accept_node);
+ init_completion(&isert_conn->login_comp);
init_completion(&isert_conn->login_req_comp);
- init_completion(&isert_conn->conn_wait);
- kref_init(&isert_conn->conn_kref);
- mutex_init(&isert_conn->conn_mutex);
- spin_lock_init(&isert_conn->conn_lock);
- INIT_LIST_HEAD(&isert_conn->conn_fr_pool);
+ init_completion(&isert_conn->wait);
+ kref_init(&isert_conn->kref);
+ mutex_init(&isert_conn->mutex);
+ spin_lock_init(&isert_conn->pool_lock);
+ INIT_LIST_HEAD(&isert_conn->fr_pool);
+ INIT_WORK(&isert_conn->release_work, isert_release_work);
+}
+
+static void
+isert_free_login_buf(struct isert_conn *isert_conn)
+{
+ struct ib_device *ib_dev = isert_conn->device->ib_device;
+
+ ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
+ ISER_RX_LOGIN_SIZE, DMA_TO_DEVICE);
+ ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
+ ISCSI_DEF_MAX_RECV_SEG_LEN,
+ DMA_FROM_DEVICE);
+ kfree(isert_conn->login_buf);
+}
- isert_conn->conn_cm_id = cma_id;
+static int
+isert_alloc_login_buf(struct isert_conn *isert_conn,
+ struct ib_device *ib_dev)
+{
+ int ret;
isert_conn->login_buf = kzalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
ISER_RX_LOGIN_SIZE, GFP_KERNEL);
if (!isert_conn->login_buf) {
isert_err("Unable to allocate isert_conn->login_buf\n");
- ret = -ENOMEM;
- goto out;
+ return -ENOMEM;
}
isert_conn->login_req_buf = isert_conn->login_buf;
isert_conn->login_rsp_buf = isert_conn->login_buf +
ISCSI_DEF_MAX_RECV_SEG_LEN;
+
isert_dbg("Set login_buf: %p login_req_buf: %p login_rsp_buf: %p\n",
isert_conn->login_buf, isert_conn->login_req_buf,
isert_conn->login_rsp_buf);
ret = ib_dma_mapping_error(ib_dev, isert_conn->login_req_dma);
if (ret) {
- isert_err("ib_dma_mapping_error failed for login_req_dma: %d\n",
- ret);
+ isert_err("login_req_dma mapping error: %d\n", ret);
isert_conn->login_req_dma = 0;
goto out_login_buf;
}
ret = ib_dma_mapping_error(ib_dev, isert_conn->login_rsp_dma);
if (ret) {
- isert_err("ib_dma_mapping_error failed for login_rsp_dma: %d\n",
- ret);
+ isert_err("login_rsp_dma mapping error: %d\n", ret);
isert_conn->login_rsp_dma = 0;
goto out_req_dma_map;
}
- device = isert_device_find_by_ib_dev(cma_id);
+ return 0;
+
+out_req_dma_map:
+ ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
+ ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_FROM_DEVICE);
+out_login_buf:
+ kfree(isert_conn->login_buf);
+ return ret;
+}
+
+static int
+isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
+{
+ struct isert_np *isert_np = cma_id->context;
+ struct iscsi_np *np = isert_np->np;
+ struct isert_conn *isert_conn;
+ struct isert_device *device;
+ int ret = 0;
+
+ spin_lock_bh(&np->np_thread_lock);
+ if (!np->enabled) {
+ spin_unlock_bh(&np->np_thread_lock);
+ isert_dbg("iscsi_np is not enabled, reject connect request\n");
+ return rdma_reject(cma_id, NULL, 0);
+ }
+ spin_unlock_bh(&np->np_thread_lock);
+
+ isert_dbg("cma_id: %p, portal: %p\n",
+ cma_id, cma_id->context);
+
+ isert_conn = kzalloc(sizeof(struct isert_conn), GFP_KERNEL);
+ if (!isert_conn)
+ return -ENOMEM;
+
+ isert_init_conn(isert_conn);
+ isert_conn->cm_id = cma_id;
+
+ ret = isert_alloc_login_buf(isert_conn, cma_id->device);
+ if (ret)
+ goto out;
+
+ device = isert_device_get(cma_id);
if (IS_ERR(device)) {
ret = PTR_ERR(device);
goto out_rsp_dma_map;
}
+ isert_conn->device = device;
/* Set max inflight RDMA READ requests */
isert_conn->initiator_depth = min_t(u8,
device->dev_attr.max_qp_init_rd_atom);
isert_dbg("Using initiator_depth: %u\n", isert_conn->initiator_depth);
- isert_conn->conn_device = device;
-
ret = isert_conn_setup_qp(isert_conn, cma_id);
if (ret)
goto out_conn_dev;
goto out_conn_dev;
mutex_lock(&isert_np->np_accept_mutex);
- list_add_tail(&isert_conn->conn_accept_node, &isert_np->np_accept_list);
+ list_add_tail(&isert_conn->accept_node, &isert_np->np_accept_list);
mutex_unlock(&isert_np->np_accept_mutex);
isert_info("np %p: Allow accept_np to continue\n", np);
return 0;
out_conn_dev:
- isert_device_try_release(device);
+ isert_device_put(device);
out_rsp_dma_map:
- ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
- ISER_RX_LOGIN_SIZE, DMA_TO_DEVICE);
-out_req_dma_map:
- ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
- ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_FROM_DEVICE);
-out_login_buf:
- kfree(isert_conn->login_buf);
+ isert_free_login_buf(isert_conn);
out:
kfree(isert_conn);
rdma_reject(cma_id, NULL, 0);
static void
isert_connect_release(struct isert_conn *isert_conn)
{
- struct isert_device *device = isert_conn->conn_device;
- struct ib_device *ib_dev = device->ib_device;
+ struct isert_device *device = isert_conn->device;
isert_dbg("conn %p\n", isert_conn);
- if (device && device->use_fastreg)
+ BUG_ON(!device);
+
+ if (device->use_fastreg)
isert_conn_free_fastreg_pool(isert_conn);
isert_free_rx_descriptors(isert_conn);
- if (isert_conn->conn_cm_id)
- rdma_destroy_id(isert_conn->conn_cm_id);
+ if (isert_conn->cm_id)
+ rdma_destroy_id(isert_conn->cm_id);
- if (isert_conn->conn_qp) {
- struct isert_comp *comp = isert_conn->conn_qp->recv_cq->cq_context;
+ if (isert_conn->qp) {
+ struct isert_comp *comp = isert_conn->qp->recv_cq->cq_context;
isert_comp_put(comp);
- ib_destroy_qp(isert_conn->conn_qp);
+ ib_destroy_qp(isert_conn->qp);
}
- if (isert_conn->login_buf) {
- ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
- ISER_RX_LOGIN_SIZE, DMA_TO_DEVICE);
- ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
- ISCSI_DEF_MAX_RECV_SEG_LEN,
- DMA_FROM_DEVICE);
- kfree(isert_conn->login_buf);
- }
- kfree(isert_conn);
+ if (isert_conn->login_buf)
+ isert_free_login_buf(isert_conn);
- if (device)
- isert_device_try_release(device);
+ isert_device_put(device);
+
+ kfree(isert_conn);
}
static void
isert_info("conn %p\n", isert_conn);
- if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
+ if (!kref_get_unless_zero(&isert_conn->kref)) {
isert_warn("conn %p connect_release is running\n", isert_conn);
return;
}
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
if (isert_conn->state != ISER_CONN_FULL_FEATURE)
isert_conn->state = ISER_CONN_UP;
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
}
static void
-isert_release_conn_kref(struct kref *kref)
+isert_release_kref(struct kref *kref)
{
struct isert_conn *isert_conn = container_of(kref,
- struct isert_conn, conn_kref);
+ struct isert_conn, kref);
isert_info("conn %p final kref %s/%d\n", isert_conn, current->comm,
current->pid);
static void
isert_put_conn(struct isert_conn *isert_conn)
{
- kref_put(&isert_conn->conn_kref, isert_release_conn_kref);
+ kref_put(&isert_conn->kref, isert_release_kref);
}
/**
* to TEMINATING and start teardown sequence (rdma_disconnect).
* In case the connection state is UP, complete flush as well.
*
- * This routine must be called with conn_mutex held. Thus it is
+ * This routine must be called with mutex held. Thus it is
* safe to call multiple times.
*/
static void
isert_info("Terminating conn %p state %d\n",
isert_conn, isert_conn->state);
isert_conn->state = ISER_CONN_TERMINATING;
- err = rdma_disconnect(isert_conn->conn_cm_id);
+ err = rdma_disconnect(isert_conn->cm_id);
if (err)
isert_warn("Failed rdma_disconnect isert_conn %p\n",
isert_conn);
{
struct isert_np *isert_np = cma_id->context;
struct isert_conn *isert_conn;
+ bool terminating = false;
if (isert_np->np_cm_id == cma_id)
return isert_np_cma_handler(cma_id->context, event);
isert_conn = cma_id->qp->qp_context;
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
+ terminating = (isert_conn->state == ISER_CONN_TERMINATING);
isert_conn_terminate(isert_conn);
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
- isert_info("conn %p completing conn_wait\n", isert_conn);
- complete(&isert_conn->conn_wait);
+ isert_info("conn %p completing wait\n", isert_conn);
+ complete(&isert_conn->wait);
+
+ if (terminating)
+ goto out;
+ mutex_lock(&isert_np->np_accept_mutex);
+ if (!list_empty(&isert_conn->accept_node)) {
+ list_del_init(&isert_conn->accept_node);
+ isert_put_conn(isert_conn);
+ queue_work(isert_release_wq, &isert_conn->release_work);
+ }
+ mutex_unlock(&isert_np->np_accept_mutex);
+
+out:
return 0;
}
{
struct isert_conn *isert_conn = cma_id->qp->qp_context;
- isert_conn->conn_cm_id = NULL;
+ isert_conn->cm_id = NULL;
isert_put_conn(isert_conn);
return -1;
{
struct ib_recv_wr *rx_wr, *rx_wr_failed;
int i, ret;
- unsigned int rx_head = isert_conn->conn_rx_desc_head;
+ unsigned int rx_head = isert_conn->rx_desc_head;
struct iser_rx_desc *rx_desc;
- for (rx_wr = isert_conn->conn_rx_wr, i = 0; i < count; i++, rx_wr++) {
- rx_desc = &isert_conn->conn_rx_descs[rx_head];
+ for (rx_wr = isert_conn->rx_wr, i = 0; i < count; i++, rx_wr++) {
+ rx_desc = &isert_conn->rx_descs[rx_head];
rx_wr->wr_id = (uintptr_t)rx_desc;
rx_wr->sg_list = &rx_desc->rx_sg;
rx_wr->num_sge = 1;
rx_wr->next = NULL; /* mark end of work requests list */
isert_conn->post_recv_buf_count += count;
- ret = ib_post_recv(isert_conn->conn_qp, isert_conn->conn_rx_wr,
+ ret = ib_post_recv(isert_conn->qp, isert_conn->rx_wr,
&rx_wr_failed);
if (ret) {
isert_err("ib_post_recv() failed with ret: %d\n", ret);
isert_conn->post_recv_buf_count -= count;
} else {
isert_dbg("Posted %d RX buffers\n", count);
- isert_conn->conn_rx_desc_head = rx_head;
+ isert_conn->rx_desc_head = rx_head;
}
return ret;
}
static int
isert_post_send(struct isert_conn *isert_conn, struct iser_tx_desc *tx_desc)
{
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
struct ib_send_wr send_wr, *send_wr_failed;
int ret;
send_wr.opcode = IB_WR_SEND;
send_wr.send_flags = IB_SEND_SIGNALED;
- ret = ib_post_send(isert_conn->conn_qp, &send_wr, &send_wr_failed);
+ ret = ib_post_send(isert_conn->qp, &send_wr, &send_wr_failed);
if (ret)
isert_err("ib_post_send() failed, ret: %d\n", ret);
struct isert_cmd *isert_cmd,
struct iser_tx_desc *tx_desc)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
ib_dma_sync_single_for_cpu(ib_dev, tx_desc->dma_addr,
isert_init_tx_hdrs(struct isert_conn *isert_conn,
struct iser_tx_desc *tx_desc)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
u64 dma_addr;
memset(&sge, 0, sizeof(struct ib_sge));
sge.addr = isert_conn->login_req_dma;
sge.length = ISER_RX_LOGIN_SIZE;
- sge.lkey = isert_conn->conn_device->mr->lkey;
+ sge.lkey = isert_conn->device->mr->lkey;
isert_dbg("Setup sge: addr: %llx length: %d 0x%08x\n",
sge.addr, sge.length, sge.lkey);
rx_wr.num_sge = 1;
isert_conn->post_recv_buf_count++;
- ret = ib_post_recv(isert_conn->conn_qp, &rx_wr, &rx_wr_fail);
+ ret = ib_post_recv(isert_conn->qp, &rx_wr, &rx_wr_fail);
if (ret) {
isert_err("ib_post_recv() failed: %d\n", ret);
isert_conn->post_recv_buf_count--;
u32 length)
{
struct isert_conn *isert_conn = conn->context;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
- struct iser_tx_desc *tx_desc = &isert_conn->conn_login_tx_desc;
+ struct iser_tx_desc *tx_desc = &isert_conn->login_tx_desc;
int ret;
isert_create_send_desc(isert_conn, NULL, tx_desc);
tx_dsg->addr = isert_conn->login_rsp_dma;
tx_dsg->length = length;
- tx_dsg->lkey = isert_conn->conn_device->mr->lkey;
+ tx_dsg->lkey = isert_conn->device->mr->lkey;
tx_desc->num_sge = 2;
}
if (!login->login_failed) {
if (login->login_complete) {
if (!conn->sess->sess_ops->SessionType &&
- isert_conn->conn_device->use_fastreg) {
+ isert_conn->device->use_fastreg) {
ret = isert_conn_create_fastreg_pool(isert_conn);
if (ret) {
isert_err("Conn: %p failed to create"
return ret;
/* Now we are in FULL_FEATURE phase */
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
isert_conn->state = ISER_CONN_FULL_FEATURE;
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
goto post_send;
}
memcpy(login->req_buf, &rx_desc->data[0], size);
if (login->first_request) {
- complete(&isert_conn->conn_login_comp);
+ complete(&isert_conn->login_comp);
return;
}
schedule_delayed_work(&conn->login_work, 0);
}
static void
-isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn,
- u32 xfer_len)
+isert_rcv_completion(struct iser_rx_desc *desc,
+ struct isert_conn *isert_conn,
+ u32 xfer_len)
{
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
struct iscsi_hdr *hdr;
u64 rx_dma;
int rx_buflen, outstanding;
if (login && !login->first_request)
isert_rx_login_req(isert_conn);
}
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
complete(&isert_conn->login_req_comp);
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
} else {
isert_rx_do_work(desc, isert_conn);
}
struct scatterlist *sg, u32 nents, u32 length, u32 offset,
enum iser_ib_op_code op, struct isert_data_buf *data)
{
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
data->dma_dir = op == ISER_IB_RDMA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE;
static void
isert_unmap_data_buf(struct isert_conn *isert_conn, struct isert_data_buf *data)
{
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
ib_dma_unmap_sg(ib_dev, data->sg, data->nents, data->dma_dir);
memset(data, 0, sizeof(*data));
isert_unmap_data_buf(isert_conn, &wr->prot);
wr->fr_desc->ind &= ~ISERT_PROTECTED;
}
- spin_lock_bh(&isert_conn->conn_lock);
- list_add_tail(&wr->fr_desc->list, &isert_conn->conn_fr_pool);
- spin_unlock_bh(&isert_conn->conn_lock);
+ spin_lock_bh(&isert_conn->pool_lock);
+ list_add_tail(&wr->fr_desc->list, &isert_conn->fr_pool);
+ spin_unlock_bh(&isert_conn->pool_lock);
wr->fr_desc = NULL;
}
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
struct iscsi_conn *conn = isert_conn->conn;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct iscsi_text_rsp *hdr;
isert_dbg("Cmd %p\n", isert_cmd);
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
int ret = 0;
if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) {
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct se_cmd *se_cmd = &cmd->se_cmd;
struct isert_conn *isert_conn = isert_cmd->conn;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
int ret = 0;
if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) {
struct isert_cmd *isert_cmd = container_of(work,
struct isert_cmd, comp_work);
struct isert_conn *isert_conn = isert_cmd->conn;
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
isert_dbg("Cmd %p i_state %d\n", isert_cmd, cmd->i_state);
}
static void
-isert_send_completion(struct iser_tx_desc *tx_desc,
+isert_snd_completion(struct iser_tx_desc *tx_desc,
struct isert_conn *isert_conn)
{
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
struct isert_cmd *isert_cmd = tx_desc->isert_cmd;
struct isert_rdma_wr *wr;
static inline bool
is_isert_tx_desc(struct isert_conn *isert_conn, void *wr_id)
{
- void *start = isert_conn->conn_rx_descs;
- int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->conn_rx_descs);
+ void *start = isert_conn->rx_descs;
+ int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->rx_descs);
if (wr_id >= start && wr_id < start + len)
return false;
isert_cq_comp_err(struct isert_conn *isert_conn, struct ib_wc *wc)
{
if (wc->wr_id == ISER_BEACON_WRID) {
- isert_info("conn %p completing conn_wait_comp_err\n",
+ isert_info("conn %p completing wait_comp_err\n",
isert_conn);
- complete(&isert_conn->conn_wait_comp_err);
+ complete(&isert_conn->wait_comp_err);
} else if (is_isert_tx_desc(isert_conn, (void *)(uintptr_t)wc->wr_id)) {
- struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
+ struct ib_device *ib_dev = isert_conn->cm_id->device;
struct isert_cmd *isert_cmd;
struct iser_tx_desc *desc;
if (likely(wc->status == IB_WC_SUCCESS)) {
if (wc->opcode == IB_WC_RECV) {
rx_desc = (struct iser_rx_desc *)(uintptr_t)wc->wr_id;
- isert_rx_completion(rx_desc, isert_conn, wc->byte_len);
+ isert_rcv_completion(rx_desc, isert_conn, wc->byte_len);
} else {
tx_desc = (struct iser_tx_desc *)(uintptr_t)wc->wr_id;
- isert_send_completion(tx_desc, isert_conn);
+ isert_snd_completion(tx_desc, isert_conn);
}
} else {
if (wc->status != IB_WC_WR_FLUSH_ERR)
struct ib_send_wr *wr_failed;
int ret;
- ret = ib_post_send(isert_conn->conn_qp, &isert_cmd->tx_desc.send_wr,
+ ret = ib_post_send(isert_conn->qp, &isert_cmd->tx_desc.send_wr,
&wr_failed);
if (ret) {
isert_err("ib_post_send failed with %d\n", ret);
if (cmd->se_cmd.sense_buffer &&
((cmd->se_cmd.se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) ||
(cmd->se_cmd.se_cmd_flags & SCF_EMULATED_TASK_SENSE))) {
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct ib_sge *tx_dsg = &isert_cmd->tx_desc.tx_sg[1];
u32 padding, pdu_len;
{
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
struct isert_conn *isert_conn = conn->context;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
spin_lock_bh(&conn->cmd_lock);
if (!list_empty(&cmd->i_conn_node))
isert_get_sup_prot_ops(struct iscsi_conn *conn)
{
struct isert_conn *isert_conn = conn->context;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
if (conn->tpg->tpg_attrib.t10_pi) {
if (device->pi_capable) {
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
struct isert_conn *isert_conn = conn->context;
struct ib_send_wr *send_wr = &isert_cmd->tx_desc.send_wr;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct ib_sge *tx_dsg = &isert_cmd->tx_desc.tx_sg[1];
struct iscsi_reject *hdr =
isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
if (txt_rsp_len) {
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct ib_sge *tx_dsg = &isert_cmd->tx_desc.tx_sg[1];
void *txt_rsp_buf = cmd->buf_ptr;
{
struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct scatterlist *sg_start, *tmp_sg;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
u32 sg_off, page_off;
int i = 0, sg_nents;
page_off = offset % PAGE_SIZE;
send_wr->sg_list = ib_sge;
- send_wr->num_sge = sg_nents;
send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc;
/*
* Perform mapping of TCM scatterlist memory ib_sge dma_addr.
ib_sge->addr, ib_sge->length, ib_sge->lkey);
page_off = 0;
data_left -= ib_sge->length;
+ if (!data_left)
+ break;
ib_sge++;
isert_dbg("Incrementing ib_sge pointer to %p\n", ib_sge);
}
+ send_wr->num_sge = ++i;
isert_dbg("Set outgoing sg_list: %p num_sg: %u from TCM SGLs\n",
send_wr->sg_list, send_wr->num_sge);
- return sg_nents;
+ return send_wr->num_sge;
}
static int
enum isert_indicator ind,
struct ib_sge *sge)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct ib_mr *mr;
struct ib_fast_reg_page_list *frpl;
else
wr->next = &fr_wr;
- ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr);
+ ret = ib_post_send(isert_conn->qp, wr, &bad_wr);
if (ret) {
isert_err("fast registration failed, ret:%d\n", ret);
return ret;
else
wr->next = &sig_wr;
- ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr);
+ ret = ib_post_send(isert_conn->qp, wr, &bad_wr);
if (ret) {
isert_err("fast registration failed, ret:%d\n", ret);
goto err;
struct isert_cmd *isert_cmd,
struct isert_rdma_wr *wr)
{
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct se_cmd *se_cmd = &isert_cmd->iscsi_cmd->se_cmd;
int ret;
return ret;
if (wr->data.dma_nents != 1 || isert_prot_cmd(isert_conn, se_cmd)) {
- spin_lock_irqsave(&isert_conn->conn_lock, flags);
- fr_desc = list_first_entry(&isert_conn->conn_fr_pool,
+ spin_lock_irqsave(&isert_conn->pool_lock, flags);
+ fr_desc = list_first_entry(&isert_conn->fr_pool,
struct fast_reg_descriptor, list);
list_del(&fr_desc->list);
- spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
+ spin_unlock_irqrestore(&isert_conn->pool_lock, flags);
wr->fr_desc = fr_desc;
}
unmap_cmd:
if (fr_desc) {
- spin_lock_irqsave(&isert_conn->conn_lock, flags);
- list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool);
- spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
+ spin_lock_irqsave(&isert_conn->pool_lock, flags);
+ list_add_tail(&fr_desc->list, &isert_conn->fr_pool);
+ spin_unlock_irqrestore(&isert_conn->pool_lock, flags);
}
isert_unmap_data_buf(isert_conn, &wr->data);
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
struct isert_conn *isert_conn = conn->context;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_send_wr *wr_failed;
int rc;
wr->send_wr_num += 1;
}
- rc = ib_post_send(isert_conn->conn_qp, wr->send_wr, &wr_failed);
+ rc = ib_post_send(isert_conn->qp, wr->send_wr, &wr_failed);
if (rc)
isert_warn("ib_post_send() failed for IB_WR_RDMA_WRITE\n");
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
struct isert_rdma_wr *wr = &isert_cmd->rdma_wr;
struct isert_conn *isert_conn = conn->context;
- struct isert_device *device = isert_conn->conn_device;
+ struct isert_device *device = isert_conn->device;
struct ib_send_wr *wr_failed;
int rc;
return rc;
}
- rc = ib_post_send(isert_conn->conn_qp, wr->send_wr, &wr_failed);
+ rc = ib_post_send(isert_conn->qp, wr->send_wr, &wr_failed);
if (rc)
isert_warn("ib_post_send() failed for IB_WR_RDMA_READ\n");
goto out_id;
}
- ret = rdma_listen(id, ISERT_RDMA_LISTEN_BACKLOG);
+ ret = rdma_listen(id, 0);
if (ret) {
isert_err("rdma_listen() failed: %d\n", ret);
goto out_id;
static int
isert_rdma_accept(struct isert_conn *isert_conn)
{
- struct rdma_cm_id *cm_id = isert_conn->conn_cm_id;
+ struct rdma_cm_id *cm_id = isert_conn->cm_id;
struct rdma_conn_param cp;
int ret;
isert_rx_login_req(isert_conn);
- isert_info("before conn_login_comp conn: %p\n", conn);
- ret = wait_for_completion_interruptible(&isert_conn->conn_login_comp);
+ isert_info("before login_comp conn: %p\n", conn);
+ ret = wait_for_completion_interruptible(&isert_conn->login_comp);
if (ret)
return ret;
isert_set_conn_info(struct iscsi_np *np, struct iscsi_conn *conn,
struct isert_conn *isert_conn)
{
- struct rdma_cm_id *cm_id = isert_conn->conn_cm_id;
+ struct rdma_cm_id *cm_id = isert_conn->cm_id;
struct rdma_route *cm_route = &cm_id->route;
struct sockaddr_in *sock_in;
struct sockaddr_in6 *sock_in6;
{
struct isert_np *isert_np = np->np_context;
struct isert_conn *isert_conn;
- int max_accept = 0, ret;
+ int ret;
accept_wait:
ret = down_interruptible(&isert_np->np_sem);
- if (ret || max_accept > 5)
+ if (ret)
return -ENODEV;
spin_lock_bh(&np->np_thread_lock);
mutex_lock(&isert_np->np_accept_mutex);
if (list_empty(&isert_np->np_accept_list)) {
mutex_unlock(&isert_np->np_accept_mutex);
- max_accept++;
goto accept_wait;
}
isert_conn = list_first_entry(&isert_np->np_accept_list,
- struct isert_conn, conn_accept_node);
- list_del_init(&isert_conn->conn_accept_node);
+ struct isert_conn, accept_node);
+ list_del_init(&isert_conn->accept_node);
mutex_unlock(&isert_np->np_accept_mutex);
conn->context = isert_conn;
isert_conn->conn = conn;
- max_accept = 0;
isert_set_conn_info(np, conn, isert_conn);
isert_info("Still have isert connections, cleaning up...\n");
list_for_each_entry_safe(isert_conn, n,
&isert_np->np_accept_list,
- conn_accept_node) {
+ accept_node) {
isert_info("cleaning isert_conn %p state (%d)\n",
isert_conn, isert_conn->state);
isert_connect_release(isert_conn);
isert_info("Starting release conn %p\n", isert_conn);
- wait_for_completion(&isert_conn->conn_wait);
+ wait_for_completion(&isert_conn->wait);
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
isert_conn->state = ISER_CONN_DOWN;
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
isert_info("Destroying conn %p\n", isert_conn);
isert_put_conn(isert_conn);
isert_info("conn %p\n", isert_conn);
- init_completion(&isert_conn->conn_wait_comp_err);
+ init_completion(&isert_conn->wait_comp_err);
isert_conn->beacon.wr_id = ISER_BEACON_WRID;
/* post an indication that all flush errors were consumed */
- if (ib_post_recv(isert_conn->conn_qp, &isert_conn->beacon, &bad_wr)) {
+ if (ib_post_recv(isert_conn->qp, &isert_conn->beacon, &bad_wr)) {
isert_err("conn %p failed to post beacon", isert_conn);
return;
}
- wait_for_completion(&isert_conn->conn_wait_comp_err);
+ wait_for_completion(&isert_conn->wait_comp_err);
}
static void isert_wait_conn(struct iscsi_conn *conn)
isert_info("Starting conn %p\n", isert_conn);
- mutex_lock(&isert_conn->conn_mutex);
+ mutex_lock(&isert_conn->mutex);
/*
- * Only wait for conn_wait_comp_err if the isert_conn made it
+ * Only wait for wait_comp_err if the isert_conn made it
* into full feature phase..
*/
if (isert_conn->state == ISER_CONN_INIT) {
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
return;
}
isert_conn_terminate(isert_conn);
- mutex_unlock(&isert_conn->conn_mutex);
+ mutex_unlock(&isert_conn->mutex);
isert_wait4cmds(conn);
isert_wait4flush(isert_conn);
isert_wait4logout(isert_conn);
- INIT_WORK(&isert_conn->release_work, isert_release_work);
queue_work(isert_release_wq, &isert_conn->release_work);
}
}
MODULE_DESCRIPTION("iSER-Target for mainline target infrastructure");
-MODULE_VERSION("0.1");
+MODULE_VERSION("1.0");
MODULE_AUTHOR("nab@Linux-iSCSI.org");
MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / blobdiff