providers/irdma: Add support to re-register a memory region.

Add API callback to support re-registering a memory region. Signed-off-by: Sindhu Devale <[email protected]> Signed-off-by: Tatyana Nikolova <[email protected]>
linux-rdma · Oct 3, 2023 · af372b8 · af372b8
1 parent 458632c
commit af372b8
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Showing 4 changed files with 26 additions and 0 deletions.
diff --git a/providers/irdma/abi.h b/providers/irdma/abi.h
@@ -27,6 +27,8 @@ DECLARE_DRV_CMD(irdma_get_context, IB_USER_VERBS_CMD_GET_CONTEXT,
  irdma_alloc_ucontext_req, irdma_alloc_ucontext_resp);
 DECLARE_DRV_CMD(irdma_ureg_mr, IB_USER_VERBS_CMD_REG_MR,
  irdma_mem_reg_req, empty);
+DECLARE_DRV_CMD(irdma_urereg_mr, IB_USER_VERBS_CMD_REREG_MR,
+ irdma_mem_reg_req, empty);
 DECLARE_DRV_CMD(irdma_ucreate_ah, IB_USER_VERBS_CMD_CREATE_AH,
  empty, irdma_create_ah_resp);
 

diff --git a/providers/irdma/umain.c b/providers/irdma/umain.c
@@ -102,6 +102,7 @@ static const struct verbs_context_ops irdma_uctx_ops = {
  .query_qp = irdma_uquery_qp,
  .reg_dmabuf_mr = irdma_ureg_mr_dmabuf,
  .reg_mr = irdma_ureg_mr,
+ .rereg_mr = irdma_urereg_mr,
  .req_notify_cq = irdma_uarm_cq,
  .resize_cq = irdma_uresize_cq,
  .free_context = irdma_ufree_context,

diff --git a/providers/irdma/umain.h b/providers/irdma/umain.h
@@ -124,6 +124,8 @@ struct ibv_mr *irdma_ureg_mr_dmabuf(struct ibv_pd *pd, uint64_t offset,
  size_t length, uint64_t iova, int fd,
  int access);
 int irdma_udereg_mr(struct verbs_mr *vmr);
+int irdma_urereg_mr(struct verbs_mr *mr, int flags, struct ibv_pd *pd,
+ void *addr, size_t length, int access);
 struct ibv_mw *irdma_ualloc_mw(struct ibv_pd *pd, enum ibv_mw_type type);
 int irdma_ubind_mw(struct ibv_qp *qp, struct ibv_mw *mw,
  struct ibv_mw_bind *mw_bind);

diff --git a/providers/irdma/uverbs.c b/providers/irdma/uverbs.c
@@ -173,6 +173,27 @@ struct ibv_mr *irdma_ureg_mr_dmabuf(struct ibv_pd *pd, uint64_t offset,
  return &umr->vmr.ibv_mr;
 }
 
+/*
+ * irdma_urereg_mr - re-register memory region
+ * @vmr: mr that was allocated
+ * @flags: bit mask to indicate which of the attr's of MR modified
+ * @pd: pd of the mr
+ * @addr: user address of the memory region
+ * @length: length of the memory
+ * @access: access allowed on this mr
+ */
+int irdma_urereg_mr(struct verbs_mr *vmr, int flags, struct ibv_pd *pd,
+ void *addr, size_t length, int access)
+{
+ struct irdma_urereg_mr cmd = {};
+ struct ib_uverbs_rereg_mr_resp resp;
+
+ cmd.reg_type = IRDMA_MEMREG_TYPE_MEM;
+ return ibv_cmd_rereg_mr(vmr, flags, addr, length, (uintptr_t)addr,
+ access, pd, &cmd.ibv_cmd, sizeof(cmd), &resp,
+ sizeof(resp));
+}
+
 /**
  * irdma_udereg_mr - re-register memory region
  * @vmr: mr that was allocated