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>

diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index bcef0d3..8fea0bc 100644 (file)
--- 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         */