RDMA/rw: Add info regarding SG count failure

Print the supported and wanted values for SG count during signature
operation.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c
index deeaf2b4b273a7592dabf90de5aa4abb834c33a5..acf9ea625811589c015fd9fc74b77d926ddd8097 100644 (file)
--- a/drivers/infiniband/core/rw.c
+++ b/drivers/infiniband/core/rw.c
@@ -357,7 +357,8 @@ int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
        int count = 0, ret;
 
        if (sg_cnt > pages_per_mr || prot_sg_cnt > pages_per_mr) {
-               pr_err("SG count too large\n");
+               pr_err("SG count too large: sg_cnt=%d, prot_sg_cnt=%d, pages_per_mr=%d\n",
+                      sg_cnt, prot_sg_cnt, pages_per_mr);
                return -EINVAL;
        }