On 12/21/21 9:28 PM, Leon Romanovsky wrote:

On Tue, Dec 21, 2021 at 10:48:53AM +0800, Cheng Xu wrote:

quoted

This header file defines the main structrues and functions used for RDMA
Verbs, including qp, cq, mr ucontext, etc,.

Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
---
  drivers/infiniband/hw/erdma/erdma_verbs.h | 366 ++++++++++++++++++++++
  1 file changed, 366 insertions(+)
  create mode 100644 drivers/infiniband/hw/erdma/erdma_verbs.h

diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.h b/drivers/infiniband/hw/erdma/erdma_verbs.h
new file mode 100644
index 000000000000..6eda8843d0d5
--- /dev/null
+++ b/drivers/infiniband/hw/erdma/erdma_verbs.h

@@ -0,0 +1,366 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Authors: Cheng Xu <chengyou@linux.alibaba.com>
+ *          Kai Shen <kaishen@linux.alibaba.com>
+ * Copyright (c) 2020-2021, Alibaba Group.
+ */
+
+#ifndef __ERDMA_VERBS_H__
+#define __ERDMA_VERBS_H__

<...>

quoted

+extern int erdma_query_port(struct ib_device *dev, u32 port, struct ib_port_attr *attr);
+extern int erdma_query_pkey(struct ib_device *dev, u32 port, u16 idx, u16 *pkey);
+extern int erdma_query_gid(struct ib_device *dev, u32 port, int idx, union ib_gid *gid);
+extern int erdma_alloc_pd(struct ib_pd *pd, struct ib_udata *data);
+extern int erdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
+extern int erdma_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr,
+				   struct ib_udata *data);
+extern int erdma_query_qp(struct ib_qp *qp, struct ib_qp_attr *attr, int mask,
+			struct ib_qp_init_attr *init_attr);
+extern int erdma_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, int mask,
+			      struct ib_udata *data);
+extern int erdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
+extern int erdma_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
+extern int erdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
+extern struct ib_mr *erdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
+				      u64 virt, int access, struct ib_udata *udata);
+extern struct ib_mr *erdma_get_dma_mr(struct ib_pd *ibpd, int rights);
+extern int erdma_dereg_mr(struct ib_mr *mr, struct ib_udata *data);
+extern int erdma_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma);
+extern void erdma_qp_get_ref(struct ib_qp *qp);
+extern void erdma_qp_put_ref(struct ib_qp *qp);
+extern struct ib_qp *erdma_get_ibqp(struct ib_device *dev, int id);
+extern int erdma_post_send(struct ib_qp *qp, const struct ib_send_wr *send_wr,
+			   const struct ib_send_wr **bad_send_wr);
+extern int erdma_post_recv(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
+			   const struct ib_recv_wr **bad_recv_wr);
+extern int erdma_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
+extern struct ib_mr *erdma_ib_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type,
+				       u32 max_num_sg);
+extern int erdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+			   int sg_nents, unsigned int *sg_offset);
+extern struct net_device *erdma_get_netdev(struct ib_device *device, u32 port_num);
+extern void erdma_disassociate_ucontext(struct ib_ucontext *ibcontext);
+extern void erdma_port_event(struct erdma_dev *dev, enum ib_event_type reason);

Why do you add "extern" to function declarations?

Thanks

We misunderstood the usage of "extern", and will fix it.

Thanks,
Cheng Xu

quoted

+
+#endif
-- 
2.27.0