#define ISER_MAX_CQ 4
struct iser_conn;
+struct ib_conn;
struct iscsi_iser_task;
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 *iser_conn,
+ int (*iser_alloc_rdma_reg_res)(struct ib_conn *ib_conn,
unsigned cmds_max);
- void (*iser_free_rdma_reg_res)(struct iser_conn *iser_conn);
+ void (*iser_free_rdma_reg_res)(struct ib_conn *ib_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,
u8 reg_indicators;
};
+/**
+ * struct ib_conn - Infiniband related objects
+ *
+ * @cma_id: rdma_cm connection maneger handle
+ * @qp: Connection Queue-pair
+ * @post_recv_buf_count: post receive counter
+ * @post_send_buf_count: post send counter
+ * @rx_wr: receive work request for batch posts
+ * @device: reference to iser device
+ * @pi_support: Indicate device T10-PI support
+ * @lock: protects fmr/fastreg pool
+ * @union.fmr:
+ * @pool: FMR pool for fast registrations
+ * @page_vec: page vector to hold mapped commands pages
+ * used for registration
+ * @union.fastreg:
+ * @pool: Fast registration descriptors pool for fast
+ * registrations
+ * @pool_size: Size of pool
+ */
+struct ib_conn {
+ struct rdma_cm_id *cma_id;
+ struct ib_qp *qp;
+ int post_recv_buf_count;
+ atomic_t post_send_buf_count;
+ struct ib_recv_wr rx_wr[ISER_MIN_POSTED_RX];
+ struct iser_device *device;
+ int cq_index;
+ bool pi_support;
+ spinlock_t lock;
+ union {
+ struct {
+ struct ib_fmr_pool *pool;
+ struct iser_page_vec *page_vec;
+ } fmr;
+ struct {
+ struct list_head pool;
+ int pool_size;
+ } fastreg;
+ };
+};
+
struct iser_conn {
+ struct ib_conn ib_conn;
struct iscsi_conn *iscsi_conn;
struct iscsi_endpoint *ep;
enum iser_conn_state state; /* rdma connection state */
atomic_t refcount;
- spinlock_t lock; /* used for state changes */
- struct iser_device *device; /* device context */
- struct rdma_cm_id *cma_id; /* CMA ID */
- struct ib_qp *qp; /* QP */
unsigned qp_max_recv_dtos; /* num of rx buffers */
unsigned qp_max_recv_dtos_mask; /* above minus 1 */
unsigned min_posted_rx; /* qp_max_recv_dtos >> 2 */
- int post_recv_buf_count; /* posted rx count */
- atomic_t post_send_buf_count; /* posted tx count */
char name[ISER_OBJECT_NAME_SIZE];
struct work_struct release_work;
struct completion stop_completion;
u64 login_req_dma, login_resp_dma;
unsigned int rx_desc_head;
struct iser_rx_desc *rx_descs;
- struct ib_recv_wr rx_wr[ISER_MIN_POSTED_RX];
- bool pi_support;
-
- /* Connection memory registration pool */
- union {
- struct {
- struct ib_fmr_pool *pool; /* pool of IB FMRs */
- struct iser_page_vec *page_vec; /* represents SG to fmr maps*
- * maps serialized as tx is*/
- } fmr;
- struct {
- struct list_head pool;
- int pool_size;
- } fastreg;
- };
};
struct iscsi_iser_task {
void iser_rcv_completion(struct iser_rx_desc *desc,
unsigned long dto_xfer_len,
- struct iser_conn *iser_conn);
+ struct ib_conn *ib_conn);
void iser_snd_completion(struct iser_tx_desc *desc,
- struct iser_conn *iser_conn);
+ struct ib_conn *ib_conn);
void iser_task_rdma_init(struct iscsi_iser_task *task);
struct sockaddr *dst_addr,
int non_blocking);
-int iser_reg_page_vec(struct iser_conn *iser_conn,
+int iser_reg_page_vec(struct ib_conn *ib_conn,
struct iser_page_vec *page_vec,
struct iser_mem_reg *mem_reg);
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_post_send(struct ib_conn *ib_conn, struct iser_tx_desc *tx_desc);
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
struct iser_tx_desc *tx_desc);
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);
+int iser_create_fmr_pool(struct ib_conn *ib_conn, unsigned cmds_max);
+void iser_free_fmr_pool(struct ib_conn *ib_conn);
+int iser_create_fastreg_pool(struct ib_conn *ib_conn, unsigned cmds_max);
+void iser_free_fastreg_pool(struct ib_conn *ib_conn);
u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir, sector_t *sector);
#endif
{
struct iscsi_iser_task *iser_task = task->dd_data;
- struct iser_device *device = iser_task->iser_conn->device;
+ struct iser_device *device = iser_task->iser_conn->ib_conn.device;
struct iser_regd_buf *regd_buf;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
unsigned int edtl)
{
struct iscsi_iser_task *iser_task = task->dd_data;
- struct iser_device *device = iser_task->iser_conn->device;
+ struct iser_device *device = iser_task->iser_conn->ib_conn.device;
struct iser_regd_buf *regd_buf;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
static void iser_create_send_desc(struct iser_conn *iser_conn,
struct iser_tx_desc *tx_desc)
{
- struct iser_device *device = iser_conn->device;
+ struct iser_device *device = iser_conn->ib_conn.device;
ib_dma_sync_single_for_cpu(device->ib_device,
tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
static void iser_free_login_buf(struct iser_conn *iser_conn)
{
+ struct iser_device *device = iser_conn->ib_conn.device;
+
if (!iser_conn->login_buf)
return;
if (iser_conn->login_req_dma)
- ib_dma_unmap_single(iser_conn->device->ib_device,
+ ib_dma_unmap_single(device->ib_device,
iser_conn->login_req_dma,
ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE);
if (iser_conn->login_resp_dma)
- ib_dma_unmap_single(iser_conn->device->ib_device,
+ ib_dma_unmap_single(device->ib_device,
iser_conn->login_resp_dma,
ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE);
static int iser_alloc_login_buf(struct iser_conn *iser_conn)
{
- struct iser_device *device;
+ struct iser_device *device = iser_conn->ib_conn.device;
int req_err, resp_err;
- BUG_ON(iser_conn->device == NULL);
-
- device = iser_conn->device;
+ BUG_ON(device == NULL);
iser_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
ISER_RX_LOGIN_SIZE, GFP_KERNEL);
u64 dma_addr;
struct iser_rx_desc *rx_desc;
struct ib_sge *rx_sg;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
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(iser_conn, session->scsi_cmds_max))
+ if (device->iser_alloc_rdma_reg_res(ib_conn, session->scsi_cmds_max))
goto create_rdma_reg_res_failed;
if (iser_alloc_login_buf(iser_conn))
rx_desc_alloc_fail:
iser_free_login_buf(iser_conn);
alloc_login_buf_fail:
- device->iser_free_rdma_reg_res(iser_conn);
+ device->iser_free_rdma_reg_res(ib_conn);
create_rdma_reg_res_failed:
iser_err("failed allocating rx descriptors / data buffers\n");
return -ENOMEM;
{
int i;
struct iser_rx_desc *rx_desc;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
if (!iser_conn->rx_descs)
goto free_login_buf;
if (device->iser_free_rdma_reg_res)
- device->iser_free_rdma_reg_res(iser_conn);
+ device->iser_free_rdma_reg_res(ib_conn);
rx_desc = iser_conn->rx_descs;
for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++)
static int iser_post_rx_bufs(struct iscsi_conn *conn, struct iscsi_hdr *req)
{
struct iser_conn *iser_conn = conn->dd_data;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
struct iscsi_session *session = conn->session;
iser_dbg("req op %x flags %x\n", req->opcode, req->flags);
* response) and no posted send buffers left - they must have been
* consumed during previous login phases.
*/
- WARN_ON(iser_conn->post_recv_buf_count != 1);
- WARN_ON(atomic_read(&iser_conn->post_send_buf_count) != 0);
+ WARN_ON(ib_conn->post_recv_buf_count != 1);
+ WARN_ON(atomic_read(&ib_conn->post_send_buf_count) != 0);
if (session->discovery_sess) {
iser_info("Discovery session, re-using login RX buffer\n");
iser_task->status = ISER_TASK_STATUS_STARTED;
- err = iser_post_send(iser_conn, tx_desc);
+ err = iser_post_send(&iser_conn->ib_conn, tx_desc);
if (!err)
return 0;
itt, buf_offset, data_seg_len);
- err = iser_post_send(iser_conn, tx_desc);
+ err = iser_post_send(&iser_conn->ib_conn, tx_desc);
if (!err)
return 0;
mdesc->type = ISCSI_TX_CONTROL;
iser_create_send_desc(iser_conn, mdesc);
- device = iser_conn->device;
+ device = iser_conn->ib_conn.device;
data_seg_len = ntoh24(task->hdr->dlength);
goto send_control_error;
}
- err = iser_post_send(iser_conn, mdesc);
+ err = iser_post_send(&iser_conn->ib_conn, mdesc);
if (!err)
return 0;
*/
void iser_rcv_completion(struct iser_rx_desc *rx_desc,
unsigned long rx_xfer_len,
- struct iser_conn *iser_conn)
+ struct ib_conn *ib_conn)
{
+ struct iser_conn *iser_conn = container_of(ib_conn, struct iser_conn,
+ ib_conn);
struct iscsi_hdr *hdr;
u64 rx_dma;
int rx_buflen, outstanding, count, err;
rx_buflen = ISER_RX_PAYLOAD_SIZE;
}
- ib_dma_sync_single_for_cpu(iser_conn->device->ib_device, rx_dma,
+ ib_dma_sync_single_for_cpu(ib_conn->device->ib_device, rx_dma,
rx_buflen, DMA_FROM_DEVICE);
hdr = &rx_desc->iscsi_header;
iscsi_iser_recv(iser_conn->iscsi_conn, hdr, rx_desc->data,
rx_xfer_len - ISER_HEADERS_LEN);
- ib_dma_sync_single_for_device(iser_conn->device->ib_device, rx_dma,
+ ib_dma_sync_single_for_device(ib_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 */
- iser_conn->post_recv_buf_count--;
+ ib_conn->post_recv_buf_count--;
if (rx_dma == iser_conn->login_resp_dma)
return;
- outstanding = iser_conn->post_recv_buf_count;
+ outstanding = ib_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);
}
void iser_snd_completion(struct iser_tx_desc *tx_desc,
- struct iser_conn *iser_conn)
+ struct ib_conn *ib_conn)
{
struct iscsi_task *task;
- struct iser_device *device = iser_conn->device;
+ struct iser_device *device = ib_conn->device;
if (tx_desc->type == ISCSI_TX_DATAOUT) {
ib_dma_unmap_single(device->ib_device, tx_desc->dma_addr,
tx_desc = NULL;
}
- atomic_dec(&iser_conn->post_send_buf_count);
+ atomic_dec(&ib_conn->post_send_buf_count);
if (tx_desc && tx_desc->type == ISCSI_TX_CONTROL) {
/* this arithmetic is legal by libiscsi dd_data allocation */
void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
- struct iser_device *device = iser_task->iser_conn->device;
+ struct iser_device *device = iser_task->iser_conn->ib_conn.device;
int is_rdma_data_aligned = 1;
int is_rdma_prot_aligned = 1;
int prot_count = scsi_prot_sg_count(iser_task->sc);
struct iser_data_buf *data_copy,
enum iser_data_dir cmd_dir)
{
- struct ib_device *dev = iser_task->iser_conn->device->ib_device;
+ struct ib_device *dev = iser_task->iser_conn->ib_conn.device->ib_device;
struct scatterlist *sgl = (struct scatterlist *)data->buf;
struct scatterlist *sg;
char *mem = NULL;
struct ib_device *dev;
unsigned long cmd_data_len;
- dev = iser_task->iser_conn->device->ib_device;
+ dev = iser_task->iser_conn->ib_conn.device->ib_device;
ib_dma_unmap_sg(dev, &data_copy->sg_single, 1,
(cmd_dir == ISER_DIR_OUT) ?
struct ib_device *dev;
iser_task->dir[iser_dir] = 1;
- dev = iser_task->iser_conn->device->ib_device;
+ dev = iser_task->iser_conn->ib_conn.device->ib_device;
data->dma_nents = ib_dma_map_sg(dev, data->buf, data->size, dma_dir);
if (data->dma_nents == 0) {
{
struct ib_device *dev;
- dev = iser_task->iser_conn->device->ib_device;
+ dev = iser_task->iser_conn->ib_conn.device->ib_device;
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_FROM_DEVICE);
}
int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
- struct iser_conn *iser_conn = iser_task->iser_conn;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf;
(unsigned long)regd_buf->reg.va,
(unsigned long)regd_buf->reg.len);
} else { /* use FMR for multiple dma entries */
- iser_page_vec_build(mem, iser_conn->fmr.page_vec, ibdev);
- err = iser_reg_page_vec(iser_conn, iser_conn->fmr.page_vec,
+ iser_page_vec_build(mem, ib_conn->fmr.page_vec, ibdev);
+ err = iser_reg_page_vec(ib_conn, ib_conn->fmr.page_vec,
®d_buf->reg);
if (err && err != -EAGAIN) {
iser_data_buf_dump(mem, ibdev);
mem->dma_nents,
ntoh24(iser_task->desc.iscsi_header.dlength));
iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
- 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++)
+ 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_err("page_vec[%d] = 0x%llx\n", i,
- (unsigned long long)iser_conn->fmr.page_vec->pages[i]);
+ (unsigned long long)ib_conn->fmr.page_vec->pages[i]);
}
if (err)
return err;
struct fast_reg_descriptor *desc, struct ib_sge *data_sge,
struct ib_sge *prot_sge, struct ib_sge *sig_sge)
{
- struct iser_conn *iser_conn = iser_task->iser_conn;
+ struct ib_conn *ib_conn = &iser_task->iser_conn->ib_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;
else
wr->next = &sig_wr;
- ret = ib_post_send(iser_conn->qp, wr, &bad_wr);
+ ret = ib_post_send(ib_conn->qp, wr, &bad_wr);
if (ret) {
iser_err("reg_sig_mr failed, ret:%d\n", ret);
goto err;
struct ib_sge *sge)
{
struct fast_reg_descriptor *desc = regd_buf->reg.mem_h;
- struct iser_conn *iser_conn = iser_task->iser_conn;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct ib_mr *mr;
struct ib_fast_reg_page_list *frpl;
else
wr->next = &fastreg_wr;
- ret = ib_post_send(iser_conn->qp, wr, &bad_wr);
+ ret = ib_post_send(ib_conn->qp, wr, &bad_wr);
if (ret) {
iser_err("fast registration failed, ret:%d\n", ret);
return ret;
int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
- struct iser_conn *iser_conn = iser_task->iser_conn;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf = &iser_task->rdma_regd[cmd_dir];
if (mem->dma_nents != 1 ||
scsi_get_prot_op(iser_task->sc) != SCSI_PROT_NORMAL) {
- spin_lock_irqsave(&iser_conn->lock, flags);
- desc = list_first_entry(&iser_conn->fastreg.pool,
+ spin_lock_irqsave(&ib_conn->lock, flags);
+ desc = list_first_entry(&ib_conn->fastreg.pool,
struct fast_reg_descriptor, list);
list_del(&desc->list);
- spin_unlock_irqrestore(&iser_conn->lock, flags);
+ spin_unlock_irqrestore(&ib_conn->lock, flags);
regd_buf->reg.mem_h = desc;
}
return 0;
err_reg:
if (desc) {
- spin_lock_irqsave(&iser_conn->lock, flags);
- list_add_tail(&desc->list, &iser_conn->fastreg.pool);
- spin_unlock_irqrestore(&iser_conn->lock, flags);
+ spin_lock_irqsave(&ib_conn->lock, flags);
+ list_add_tail(&desc->list, &ib_conn->fastreg.pool);
+ spin_unlock_irqrestore(&ib_conn->lock, flags);
}
return err;
*
* returns 0 on success, or errno code on failure
*/
-int iser_create_fmr_pool(struct iser_conn *iser_conn, unsigned cmds_max)
+int iser_create_fmr_pool(struct ib_conn *ib_conn, unsigned cmds_max)
{
- struct iser_device *device = iser_conn->device;
+ struct iser_device *device = ib_conn->device;
struct ib_fmr_pool_param params;
int ret = -ENOMEM;
- iser_conn->fmr.page_vec = kmalloc(sizeof(*iser_conn->fmr.page_vec) +
+ ib_conn->fmr.page_vec = kmalloc(sizeof(*ib_conn->fmr.page_vec) +
(sizeof(u64)*(ISCSI_ISER_SG_TABLESIZE + 1)),
GFP_KERNEL);
- if (!iser_conn->fmr.page_vec)
+ if (!ib_conn->fmr.page_vec)
return ret;
- iser_conn->fmr.page_vec->pages = (u64 *)(iser_conn->fmr.page_vec + 1);
+ ib_conn->fmr.page_vec->pages = (u64 *)(ib_conn->fmr.page_vec + 1);
params.page_shift = SHIFT_4K;
/* when the first/last SG element are not start/end *
IB_ACCESS_REMOTE_WRITE |
IB_ACCESS_REMOTE_READ);
- iser_conn->fmr.pool = ib_create_fmr_pool(device->pd, ¶ms);
- if (!IS_ERR(iser_conn->fmr.pool))
+ ib_conn->fmr.pool = ib_create_fmr_pool(device->pd, ¶ms);
+ if (!IS_ERR(ib_conn->fmr.pool))
return 0;
/* no FMR => no need for page_vec */
- kfree(iser_conn->fmr.page_vec);
- iser_conn->fmr.page_vec = NULL;
+ kfree(ib_conn->fmr.page_vec);
+ ib_conn->fmr.page_vec = NULL;
- ret = PTR_ERR(iser_conn->fmr.pool);
- iser_conn->fmr.pool = NULL;
+ ret = PTR_ERR(ib_conn->fmr.pool);
+ ib_conn->fmr.pool = NULL;
if (ret != -ENOSYS) {
iser_err("FMR allocation failed, err %d\n", ret);
return ret;
/**
* iser_free_fmr_pool - releases the FMR pool and page vec
*/
-void iser_free_fmr_pool(struct iser_conn *iser_conn)
+void iser_free_fmr_pool(struct ib_conn *ib_conn)
{
iser_info("freeing conn %p fmr pool %p\n",
- iser_conn, iser_conn->fmr.pool);
+ ib_conn, ib_conn->fmr.pool);
- if (iser_conn->fmr.pool != NULL)
- ib_destroy_fmr_pool(iser_conn->fmr.pool);
+ if (ib_conn->fmr.pool != NULL)
+ ib_destroy_fmr_pool(ib_conn->fmr.pool);
- iser_conn->fmr.pool = NULL;
+ ib_conn->fmr.pool = NULL;
- kfree(iser_conn->fmr.page_vec);
- iser_conn->fmr.page_vec = NULL;
+ kfree(ib_conn->fmr.page_vec);
+ ib_conn->fmr.page_vec = NULL;
}
static int
* for fast registration work requests.
* returns 0 on success, or errno code on failure
*/
-int iser_create_fastreg_pool(struct iser_conn *iser_conn, unsigned cmds_max)
+int iser_create_fastreg_pool(struct ib_conn *ib_conn, unsigned cmds_max)
{
- struct iser_device *device = iser_conn->device;
- struct fast_reg_descriptor *desc;
+ struct iser_device *device = ib_conn->device;
+ struct fast_reg_descriptor *desc;
int i, ret;
- INIT_LIST_HEAD(&iser_conn->fastreg.pool);
- iser_conn->fastreg.pool_size = 0;
+ INIT_LIST_HEAD(&ib_conn->fastreg.pool);
+ ib_conn->fastreg.pool_size = 0;
for (i = 0; i < cmds_max; i++) {
desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (!desc) {
}
ret = iser_create_fastreg_desc(device->ib_device, device->pd,
- iser_conn->pi_support, desc);
+ ib_conn->pi_support, desc);
if (ret) {
iser_err("Failed to create fastreg descriptor err=%d\n",
ret);
goto err;
}
- list_add_tail(&desc->list, &iser_conn->fastreg.pool);
- iser_conn->fastreg.pool_size++;
+ list_add_tail(&desc->list, &ib_conn->fastreg.pool);
+ ib_conn->fastreg.pool_size++;
}
return 0;
err:
- iser_free_fastreg_pool(iser_conn);
+ iser_free_fastreg_pool(ib_conn);
return ret;
}
/**
* iser_free_fastreg_pool - releases the pool of fast_reg descriptors
*/
-void iser_free_fastreg_pool(struct iser_conn *iser_conn)
+void iser_free_fastreg_pool(struct ib_conn *ib_conn)
{
struct fast_reg_descriptor *desc, *tmp;
int i = 0;
- if (list_empty(&iser_conn->fastreg.pool))
+ if (list_empty(&ib_conn->fastreg.pool))
return;
- iser_info("freeing conn %p fr pool\n", iser_conn);
+ iser_info("freeing conn %p fr pool\n", ib_conn);
- list_for_each_entry_safe(desc, tmp, &iser_conn->fastreg.pool, list) {
+ list_for_each_entry_safe(desc, tmp, &ib_conn->fastreg.pool, list) {
list_del(&desc->list);
ib_free_fast_reg_page_list(desc->data_frpl);
ib_dereg_mr(desc->data_mr);
++i;
}
- if (i < iser_conn->fastreg.pool_size)
+ if (i < ib_conn->fastreg.pool_size)
iser_warn("pool still has %d regions registered\n",
- iser_conn->fastreg.pool_size - i);
+ ib_conn->fastreg.pool_size - i);
}
/**
*
* returns 0 on success, -1 on failure
*/
-static int iser_create_ib_conn_res(struct iser_conn *iser_conn)
+static int iser_create_ib_conn_res(struct ib_conn *ib_conn)
{
struct iser_device *device;
struct ib_qp_init_attr init_attr;
int ret = -ENOMEM;
int index, min_index = 0;
- BUG_ON(iser_conn->device == NULL);
+ BUG_ON(ib_conn->device == NULL);
- device = iser_conn->device;
+ device = ib_conn->device;
memset(&init_attr, 0, sizeof init_attr);
device->cq_active_qps[min_index])
min_index = index;
device->cq_active_qps[min_index]++;
+ ib_conn->cq_index = min_index;
mutex_unlock(&ig.connlist_mutex);
- iser_info("cq index %d used for iser_conn %p\n", min_index, iser_conn);
+ iser_info("cq index %d used for ib_conn %p\n", min_index, ib_conn);
init_attr.event_handler = iser_qp_event_callback;
- init_attr.qp_context = (void *)iser_conn;
+ init_attr.qp_context = (void *)ib_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;
init_attr.cap.max_recv_sge = 1;
init_attr.sq_sig_type = IB_SIGNAL_REQ_WR;
init_attr.qp_type = IB_QPT_RC;
- if (iser_conn->pi_support) {
+ if (ib_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(iser_conn->cma_id, device->pd, &init_attr);
+ ret = rdma_create_qp(ib_conn->cma_id, device->pd, &init_attr);
if (ret)
goto out_err;
- iser_conn->qp = iser_conn->cma_id->qp;
+ ib_conn->qp = ib_conn->cma_id->qp;
iser_info("setting conn %p cma_id %p qp %p\n",
- iser_conn, iser_conn->cma_id,
- iser_conn->cma_id->qp);
+ ib_conn, ib_conn->cma_id,
+ ib_conn->cma_id->qp);
return ret;
out_err:
*/
static void iser_free_ib_conn_res(struct iser_conn *iser_conn)
{
- int cq_index;
- BUG_ON(iser_conn == NULL);
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
iser_info("freeing conn %p cma_id %p qp %p\n",
- iser_conn, iser_conn->cma_id,
- iser_conn->qp);
+ ib_conn, ib_conn->cma_id,
+ ib_conn->qp);
/* qp is created only once both addr & route are resolved */
- 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(iser_conn->cma_id);
+ if (ib_conn->qp != NULL) {
+ ib_conn->device->cq_active_qps[ib_conn->cq_index]--;
+ rdma_destroy_qp(ib_conn->cma_id);
}
- iser_conn->qp = NULL;
+ ib_conn->qp = NULL;
}
/**
*/
void iser_conn_release(struct iser_conn *iser_conn)
{
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
mutex_lock(&ig.connlist_mutex);
list_del(&iser_conn->conn_list);
iser_free_rx_descriptors(iser_conn);
iser_free_ib_conn_res(iser_conn);
- iser_conn->device = NULL;
+ ib_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(&iser_conn->state_mutex);
- /* if cma handler context, the caller actually destroy the id */
- if (iser_conn->cma_id != NULL) {
- rdma_destroy_id(iser_conn->cma_id);
- iser_conn->cma_id = NULL;
+ if (ib_conn->cma_id != NULL) {
+ rdma_destroy_id(ib_conn->cma_id);
+ ib_conn->cma_id = NULL;
}
+
kfree(iser_conn);
}
*/
void iser_conn_terminate(struct iser_conn *iser_conn)
{
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
int err = 0;
/* change the ib conn state only if the conn is UP, however always call
*/
iser_conn_state_comp_exch(iser_conn, ISER_CONN_UP, ISER_CONN_TERMINATING);
- err = rdma_disconnect(iser_conn->cma_id);
+ err = rdma_disconnect(ib_conn->cma_id);
if (err)
iser_err("Failed to disconnect, conn: 0x%p err %d\n",
iser_conn, err);
{
struct iser_device *device;
struct iser_conn *iser_conn;
+ struct ib_conn *ib_conn;
int ret;
iser_conn = (struct iser_conn *)cma_id->context;
/* bailout */
return;
+ ib_conn = &iser_conn->ib_conn;
device = iser_device_find_by_ib_device(cma_id);
if (!device) {
iser_err("device lookup/creation failed\n");
return;
}
- iser_conn->device = device;
+ ib_conn->device = device;
/* connection T10-PI support */
if (iser_pi_enable) {
IB_DEVICE_SIGNATURE_HANDOVER)) {
iser_warn("T10-PI requested but not supported on %s, "
"continue without T10-PI\n",
- iser_conn->device->ib_device->name);
- iser_conn->pi_support = false;
+ ib_conn->device->ib_device->name);
+ ib_conn->pi_support = false;
} else {
- iser_conn->pi_support = true;
+ ib_conn->pi_support = true;
}
}
int ret;
struct iser_cm_hdr req_hdr;
struct iser_conn *iser_conn = (struct iser_conn *)cma_id->context;
- struct iser_device *device = iser_conn->device;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
+ struct iser_device *device = ib_conn->device;
if (iser_conn->state != ISER_CONN_PENDING)
/* bailout */
return;
- ret = iser_create_ib_conn_res((struct iser_conn *)cma_id->context);
+ ret = iser_create_ib_conn_res(ib_conn);
if (ret)
goto failure;
static void iser_disconnected_handler(struct rdma_cm_id *cma_id)
{
struct iser_conn *iser_conn;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
iser_conn = (struct iser_conn *)cma_id->context;
* 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 (iser_conn->post_recv_buf_count == 0 &&
- (atomic_read(&iser_conn->post_send_buf_count) == 0)) {
+ if (ib_conn->post_recv_buf_count == 0 &&
+ (atomic_read(&ib_conn->post_send_buf_count) == 0)) {
complete(&iser_conn->flush_completion);
}
}
void iser_conn_init(struct iser_conn *iser_conn)
{
iser_conn->state = ISER_CONN_INIT;
- iser_conn->post_recv_buf_count = 0;
- atomic_set(&iser_conn->post_send_buf_count, 0);
+ iser_conn->ib_conn.post_recv_buf_count = 0;
+ atomic_set(&iser_conn->ib_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);
+ spin_lock_init(&iser_conn->ib_conn.lock);
mutex_init(&iser_conn->state_mutex);
}
struct sockaddr *dst_addr,
int non_blocking)
{
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
int err = 0;
mutex_lock(&iser_conn->state_mutex);
iser_info("connecting to: %s\n", iser_conn->name);
/* the device is known only --after-- address resolution */
- iser_conn->device = NULL;
+ ib_conn->device = NULL;
iser_conn->state = ISER_CONN_PENDING;
- iser_conn->cma_id = rdma_create_id(iser_cma_handler,
- (void *)iser_conn,
- RDMA_PS_TCP, IB_QPT_RC);
- if (IS_ERR(iser_conn->cma_id)) {
- err = PTR_ERR(iser_conn->cma_id);
+ ib_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);
iser_err("rdma_create_id failed: %d\n", err);
goto id_failure;
}
- err = rdma_resolve_addr(iser_conn->cma_id, src_addr, dst_addr, 1000);
+ err = rdma_resolve_addr(ib_conn->cma_id, src_addr, dst_addr, 1000);
if (err) {
iser_err("rdma_resolve_addr failed: %d\n", err);
goto addr_failure;
return 0;
id_failure:
- iser_conn->cma_id = NULL;
+ ib_conn->cma_id = NULL;
addr_failure:
iser_conn->state = ISER_CONN_DOWN;
connect_failure:
*
* returns: 0 on success, errno code on failure
*/
-int iser_reg_page_vec(struct iser_conn *iser_conn,
+int iser_reg_page_vec(struct ib_conn *ib_conn,
struct iser_page_vec *page_vec,
struct iser_mem_reg *mem_reg)
{
page_list = page_vec->pages;
io_addr = page_list[0];
- mem = ib_fmr_pool_map_phys(iser_conn->fmr.pool,
+ mem = ib_fmr_pool_map_phys(ib_conn->fmr.pool,
page_list,
page_vec->length,
io_addr);
{
struct iser_mem_reg *reg = &iser_task->rdma_regd[cmd_dir].reg;
struct iser_conn *iser_conn = iser_task->iser_conn;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
struct fast_reg_descriptor *desc = reg->mem_h;
if (!reg->is_mr)
reg->mem_h = NULL;
reg->is_mr = 0;
- spin_lock_bh(&iser_conn->lock);
- list_add_tail(&desc->list, &iser_conn->fastreg.pool);
- spin_unlock_bh(&iser_conn->lock);
+ spin_lock_bh(&ib_conn->lock);
+ list_add_tail(&desc->list, &ib_conn->fastreg.pool);
+ spin_unlock_bh(&ib_conn->lock);
}
int iser_post_recvl(struct iser_conn *iser_conn)
{
struct ib_recv_wr rx_wr, *rx_wr_failed;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
struct ib_sge sge;
int ib_ret;
sge.addr = iser_conn->login_resp_dma;
sge.length = ISER_RX_LOGIN_SIZE;
- sge.lkey = iser_conn->device->mr->lkey;
+ sge.lkey = ib_conn->device->mr->lkey;
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;
- iser_conn->post_recv_buf_count++;
- ib_ret = ib_post_recv(iser_conn->qp, &rx_wr, &rx_wr_failed);
+ ib_conn->post_recv_buf_count++;
+ ib_ret = ib_post_recv(ib_conn->qp, &rx_wr, &rx_wr_failed);
if (ib_ret) {
iser_err("ib_post_recv failed ret=%d\n", ib_ret);
- iser_conn->post_recv_buf_count--;
+ ib_conn->post_recv_buf_count--;
}
return ib_ret;
}
{
struct ib_recv_wr *rx_wr, *rx_wr_failed;
int i, ib_ret;
+ struct ib_conn *ib_conn = &iser_conn->ib_conn;
unsigned int my_rx_head = iser_conn->rx_desc_head;
struct iser_rx_desc *rx_desc;
- for (rx_wr = iser_conn->rx_wr, i = 0; i < count; i++, rx_wr++) {
+ for (rx_wr = ib_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--;
rx_wr->next = NULL; /* mark end of work requests list */
- iser_conn->post_recv_buf_count += count;
- ib_ret = ib_post_recv(iser_conn->qp, iser_conn->rx_wr, &rx_wr_failed);
+ ib_conn->post_recv_buf_count += count;
+ ib_ret = ib_post_recv(ib_conn->qp, ib_conn->rx_wr, &rx_wr_failed);
if (ib_ret) {
iser_err("ib_post_recv failed ret=%d\n", ib_ret);
- iser_conn->post_recv_buf_count -= count;
+ ib_conn->post_recv_buf_count -= count;
} else
iser_conn->rx_desc_head = my_rx_head;
return ib_ret;
*
* returns 0 on success, -1 on failure
*/
-int iser_post_send(struct iser_conn *iser_conn, struct iser_tx_desc *tx_desc)
+int iser_post_send(struct ib_conn *ib_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(iser_conn->device->ib_device,
+ ib_dma_sync_single_for_device(ib_conn->device->ib_device,
tx_desc->dma_addr, ISER_HEADERS_LEN,
DMA_TO_DEVICE);
send_wr.opcode = IB_WR_SEND;
send_wr.send_flags = IB_SEND_SIGNALED;
- atomic_inc(&iser_conn->post_send_buf_count);
+ atomic_inc(&ib_conn->post_send_buf_count);
- ib_ret = ib_post_send(iser_conn->qp, &send_wr, &send_wr_failed);
+ ib_ret = ib_post_send(ib_conn->qp, &send_wr, &send_wr_failed);
if (ib_ret) {
iser_err("ib_post_send failed, ret:%d\n", ib_ret);
- atomic_dec(&iser_conn->post_send_buf_count);
+ atomic_dec(&ib_conn->post_send_buf_count);
}
return ib_ret;
}
static void iser_handle_comp_error(struct iser_tx_desc *desc,
- struct iser_conn *iser_conn)
+ struct ib_conn *ib_conn)
{
+ struct iser_conn *iser_conn = container_of(ib_conn, struct iser_conn,
+ ib_conn);
+
if (desc && desc->type == ISCSI_TX_DATAOUT)
kmem_cache_free(ig.desc_cache, desc);
- if (iser_conn->post_recv_buf_count == 0 &&
- atomic_read(&iser_conn->post_send_buf_count) == 0) {
+ if (ib_conn->post_recv_buf_count == 0 &&
+ atomic_read(&ib_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
struct ib_cq *cq = device->tx_cq[cq_index];
struct ib_wc wc;
struct iser_tx_desc *tx_desc;
- struct iser_conn *iser_conn;
+ struct ib_conn *ib_conn;
int completed_tx = 0;
while (ib_poll_cq(cq, 1, &wc) == 1) {
tx_desc = (struct iser_tx_desc *) (unsigned long) wc.wr_id;
- iser_conn = wc.qp->qp_context;
+ ib_conn = wc.qp->qp_context;
if (wc.status == IB_WC_SUCCESS) {
if (wc.opcode == IB_WC_SEND)
- iser_snd_completion(tx_desc, iser_conn);
+ iser_snd_completion(tx_desc, ib_conn);
else
iser_err("expected opcode %d got %d\n",
IB_WC_SEND, wc.opcode);
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(&iser_conn->post_send_buf_count);
- iser_handle_comp_error(tx_desc, iser_conn);
+ atomic_dec(&ib_conn->post_send_buf_count);
+ iser_handle_comp_error(tx_desc, ib_conn);
}
}
completed_tx++;
struct ib_wc wc;
struct iser_rx_desc *desc;
unsigned long xfer_len;
- struct iser_conn *iser_conn;
+ struct ib_conn *ib_conn;
int completed_tx, completed_rx = 0;
/* First do tx drain, so in a case where we have rx flushes and a successful
while (ib_poll_cq(cq, 1, &wc) == 1) {
desc = (struct iser_rx_desc *) (unsigned long) wc.wr_id;
BUG_ON(desc == NULL);
- iser_conn = wc.qp->qp_context;
+ ib_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, iser_conn);
+ iser_rcv_completion(desc, xfer_len, ib_conn);
} else
iser_err("expected opcode %d got %d\n",
IB_WC_RECV, wc.opcode);
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);
- iser_conn->post_recv_buf_count--;
- iser_handle_comp_error(NULL, iser_conn);
+ ib_conn->post_recv_buf_count--;
+ iser_handle_comp_error(NULL, ib_conn);
}
completed_rx++;
if (!(completed_rx & 63))
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