RDMA/irdma: Split MEM handler into irdma_reg_user_mr_type_mem

The source codes related with IRDMA_MEMREG_TYPE_MEM are split
into a new function irdma_reg_user_mr_type_mem.

Reviewed-by: Shiraz Saleem <[email protected]>
Signed-off-by: Zhu Yanjun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>

drivers/infiniband/hw/irdma/verbs.c

@@ -2745,6 +2745,54 @@ static int irdma_hwreg_mr(struct irdma_device *iwdev, struct irdma_mr *iwmr,
 	return ret;
 }
 
+static int irdma_reg_user_mr_type_mem(struct irdma_mr *iwmr, int access)
+{
+	struct irdma_device *iwdev = to_iwdev(iwmr->ibmr.device);
+	struct irdma_pbl *iwpbl = &iwmr->iwpbl;
+	bool use_pbles;
+	u32 stag;
+	int err;
+
+	use_pbles = iwmr->page_cnt != 1;
+
+	err = irdma_setup_pbles(iwdev->rf, iwmr, use_pbles, false);
+	if (err)
+		return err;
+
+	if (use_pbles) {
+		err = irdma_check_mr_contiguous(&iwpbl->pble_alloc,
+						iwmr->page_size);
+		if (err) {
+			irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc);
+			iwpbl->pbl_allocated = false;
+		}
+	}
+
+	stag = irdma_create_stag(iwdev);
+	if (!stag) {
+		err = -ENOMEM;
+		goto free_pble;
+	}
+
+	iwmr->stag = stag;
+	iwmr->ibmr.rkey = stag;
+	iwmr->ibmr.lkey = stag;
+	err = irdma_hwreg_mr(iwdev, iwmr, access);
+	if (err)
+		goto err_hwreg;
+
+	return 0;
+
+err_hwreg:
+	irdma_free_stag(iwdev, stag);
+
+free_pble:
+	if (iwpbl->pble_alloc.level != PBLE_LEVEL_0 && iwpbl->pbl_allocated)
+		irdma_free_pble(iwdev->rf->pble_rsrc, &iwpbl->pble_alloc);
+
+	return err;
+}
+
 /**
  * irdma_reg_user_mr - Register a user memory region
  * @pd: ptr of pd
@@ -2761,12 +2809,11 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
 #define IRDMA_MEM_REG_MIN_REQ_LEN offsetofend(struct irdma_mem_reg_req, sq_pages)
 	struct irdma_device *iwdev = to_iwdev(pd->device);
 	struct irdma_ucontext *ucontext;
-	struct irdma_pble_alloc *palloc;
 	struct irdma_pbl *iwpbl;
 	struct irdma_mr *iwmr;
 	struct ib_umem *region;
 	struct irdma_mem_reg_req req;
-	u32 total, stag = 0;
+	u32 total;
 	u8 shadow_pgcnt = 1;
 	bool use_pbles = false;
 	unsigned long flags;
@@ -2817,7 +2864,6 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
 	}
 	iwmr->len = region->length;
 	iwpbl->user_base = virt;
-	palloc = &iwpbl->pble_alloc;
 	iwmr->type = req.reg_type;
 	iwmr->page_cnt = ib_umem_num_dma_blocks(region, iwmr->page_size);
 
@@ -2863,36 +2909,10 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
 		spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
 		break;
 	case IRDMA_MEMREG_TYPE_MEM:
-		use_pbles = (iwmr->page_cnt != 1);
-
-		err = irdma_setup_pbles(iwdev->rf, iwmr, use_pbles, false);
+		err = irdma_reg_user_mr_type_mem(iwmr, access);
 		if (err)
 			goto error;
 
-		if (use_pbles) {
-			err = irdma_check_mr_contiguous(palloc,
-							iwmr->page_size);
-			if (err) {
-				irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
-				iwpbl->pbl_allocated = false;
-			}
-		}
-
-		stag = irdma_create_stag(iwdev);
-		if (!stag) {
-			err = -ENOMEM;
-			goto error;
-		}
-
-		iwmr->stag = stag;
-		iwmr->ibmr.rkey = stag;
-		iwmr->ibmr.lkey = stag;
-		err = irdma_hwreg_mr(iwdev, iwmr, access);
-		if (err) {
-			irdma_free_stag(iwdev, stag);
-			goto error;
-		}
-
 		break;
 	default:
 		goto error;
@@ -2903,8 +2923,6 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
 	return &iwmr->ibmr;
 
 error:
-	if (palloc->level != PBLE_LEVEL_0 && iwpbl->pbl_allocated)
-		irdma_free_pble(iwdev->rf->pble_rsrc, palloc);
 	ib_umem_release(region);
 	kfree(iwmr);