1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
new file mode 100644
index 000000000000..b104f4c2cd38
--- /dev/null
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -0,0 +1,138 @@
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/rdma_cm.h>
+
+#define ISERT_RDMA_LISTEN_BACKLOG	10
+
+enum isert_desc_type {
+	ISCSI_TX_CONTROL,
+	ISCSI_TX_DATAIN
+};
+
+enum iser_ib_op_code {
+	ISER_IB_RECV,
+	ISER_IB_SEND,
+	ISER_IB_RDMA_WRITE,
+	ISER_IB_RDMA_READ,
+};
+
+enum iser_conn_state {
+	ISER_CONN_INIT,
+	ISER_CONN_UP,
+	ISER_CONN_TERMINATING,
+	ISER_CONN_DOWN,
+};
+
+struct iser_rx_desc {
+	struct iser_hdr iser_header;
+	struct iscsi_hdr iscsi_header;
+	char		data[ISER_RECV_DATA_SEG_LEN];
+	u64		dma_addr;
+	struct ib_sge	rx_sg;
+	char		pad[ISER_RX_PAD_SIZE];
+} __packed;
+
+struct iser_tx_desc {
+	struct iser_hdr iser_header;
+	struct iscsi_hdr iscsi_header;
+	enum isert_desc_type type;
+	u64		dma_addr;
+	struct ib_sge	tx_sg[2];
+	int		num_sge;
+	struct isert_cmd *isert_cmd;
+	struct ib_send_wr send_wr;
+} __packed;
+
+struct isert_rdma_wr {
+	struct list_head	wr_list;
+	struct isert_cmd	*isert_cmd;
+	enum iser_ib_op_code	iser_ib_op;
+	struct ib_sge		*ib_sge;
+	int			num_sge;
+	struct scatterlist	*sge;
+	int			send_wr_num;
+	struct ib_send_wr	*send_wr;
+};
+
+struct isert_cmd {
+	uint32_t		read_stag;
+	uint32_t		write_stag;
+	uint64_t		read_va;
+	uint64_t		write_va;
+	u64			sense_buf_dma;
+	u32			sense_buf_len;
+	u32			read_va_off;
+	u32			write_va_off;
+	u32			rdma_wr_num;
+	struct isert_conn	*conn;
+	struct iscsi_cmd	iscsi_cmd;
+	struct ib_sge		*ib_sge;
+	struct iser_tx_desc	tx_desc;
+	struct isert_rdma_wr	rdma_wr;
+	struct work_struct	comp_work;
+};
+
+struct isert_device;
+
+struct isert_conn {
+	enum iser_conn_state	state;
+	bool			logout_posted;
+	int			post_recv_buf_count;
+	atomic_t		post_send_buf_count;
+	u32			responder_resources;
+	u32			initiator_depth;
+	u32			max_sge;
+	char			*login_buf;
+	char			*login_req_buf;
+	char			*login_rsp_buf;
+	u64			login_req_dma;
+	u64			login_rsp_dma;
+	unsigned int		conn_rx_desc_head;
+	struct iser_rx_desc	*conn_rx_descs;
+	struct ib_recv_wr	conn_rx_wr[ISERT_MIN_POSTED_RX];
+	struct iscsi_conn	*conn;
+	struct list_head	conn_accept_node;
+	struct completion	conn_login_comp;
+	struct iser_tx_desc	conn_login_tx_desc;
+	struct rdma_cm_id	*conn_cm_id;
+	struct ib_pd		*conn_pd;
+	struct ib_mr		*conn_mr;
+	struct ib_qp		*conn_qp;
+	struct isert_device	*conn_device;
+	struct work_struct	conn_logout_work;
+	wait_queue_head_t	conn_wait;
+	wait_queue_head_t	conn_wait_comp_err;
+	struct kref		conn_kref;
+};
+
+#define ISERT_MAX_CQ 64
+
+struct isert_cq_desc {
+	struct isert_device	*device;
+	int			cq_index;
+	struct work_struct	cq_rx_work;
+	struct work_struct	cq_tx_work;
+};
+
+struct isert_device {
+	int			cqs_used;
+	int			refcount;
+	int			cq_active_qps[ISERT_MAX_CQ];
+	struct ib_device	*ib_device;
+	struct ib_pd		*dev_pd;
+	struct ib_mr		*dev_mr;
+	struct ib_cq		*dev_rx_cq[ISERT_MAX_CQ];
+	struct ib_cq		*dev_tx_cq[ISERT_MAX_CQ];
+	struct isert_cq_desc	*cq_desc;
+	struct list_head	dev_node;
+};
+
+struct isert_np {
+	wait_queue_head_t	np_accept_wq;
+	struct rdma_cm_id	*np_cm_id;
+	struct mutex		np_accept_mutex;
+	struct list_head	np_accept_list;
+	struct completion	np_login_comp;
+};