IB/iser: fix some debug prints

fix and add some debug prints related to iser
handling of memory for rdma.

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index bcef0d31f756..8fea0bce5042 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -329,9 +329,9 @@ static void iser_data_buf_dump(struct iser_data_buf *data)
         struct scatterlist *sg = (struct scatterlist *)data->buf;
         int i;
 
-        for (i = 0; i < data->size; i++)
+        for (i = 0; i < data->dma_nents; i++)
                 iser_err("sg[%d] dma_addr:0x%lX page:0x%p "
-                         "off:%d sz:%d dma_len:%d\n",
+                         "off:0x%x sz:0x%x dma_len:0x%x\n",
                          i, (unsigned long)sg_dma_address(&sg[i]),
                          sg[i].page, sg[i].offset,
                          sg[i].length,sg_dma_len(&sg[i]));
@@ -383,6 +383,7 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
         struct iser_regd_buf *regd_buf;
         int aligned_len;
         int err;
+        int i;
 
         regd_buf = &iser_ctask->rdma_regd[cmd_dir];
 
@@ -400,8 +401,18 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
 
         iser_page_vec_build(mem, ib_conn->page_vec);
         err = iser_reg_page_vec(ib_conn, ib_conn->page_vec, &regd_buf->reg);
-        if (err)
+        if (err) {
+                iser_data_buf_dump(mem);
+                iser_err("mem->dma_nents = %d (dlength = 0x%x)\n", mem->dma_nents,
+                         ntoh24(iser_ctask->desc.iscsi_header.dlength));
+                iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
+                         ib_conn->page_vec->data_size, ib_conn->page_vec->length,
+                         ib_conn->page_vec->offset);
+                for (i=0 ; i<ib_conn->page_vec->length ; i++) {
+                        iser_err("page_vec[%d] = 0x%lx\n", i, ib_conn->page_vec->pages[i]);
+                }
                 return err;
+        }
 
         /* take a reference on this regd buf such that it will not be released *
          * (eg in send dto completion) before we get the scsi response         */