IB/mlx4: Add debug prints

Define pr_fmt and add some pr_debug prints.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 259b0670b51c..84786a9fb64f 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -242,6 +242,25 @@ static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
         int err;
         struct ib_port_attr pattr;
 
+        if (in_wc && in_wc->qp->qp_num) {
+                pr_debug("received MAD: slid:%d sqpn:%d "
+                        "dlid_bits:%d dqpn:%d wc_flags:0x%x, cls %x, mtd %x, atr %x\n",
+                        in_wc->slid, in_wc->src_qp,
+                        in_wc->dlid_path_bits,
+                        in_wc->qp->qp_num,
+                        in_wc->wc_flags,
+                        in_mad->mad_hdr.mgmt_class, in_mad->mad_hdr.method,
+                        be16_to_cpu(in_mad->mad_hdr.attr_id));
+                if (in_wc->wc_flags & IB_WC_GRH) {
+                        pr_debug("sgid_hi:0x%016llx sgid_lo:0x%016llx\n",
+                                 be64_to_cpu(in_grh->sgid.global.subnet_prefix),
+                                 be64_to_cpu(in_grh->sgid.global.interface_id));
+                        pr_debug("dgid_hi:0x%016llx dgid_lo:0x%016llx\n",
+                                 be64_to_cpu(in_grh->dgid.global.subnet_prefix),
+                                 be64_to_cpu(in_grh->dgid.global.interface_id));
+                }
+        }
+
         slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
 
         if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) {