iw_cxgb4: dump detailed driver-specific QP information

Provide a cxgb4-specific function to fill in qp state details.
This allows dumping important c4iw_qp state useful for debugging.

Included in the dump are the t4_sq, t4_rq structs, plus a dump
of the t4_swsqe and t4swrqe descriptors for the first and last
pending entries.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

@@ -55,6 +55,7 @@
 #include <rdma/iw_cm.h>
 #include <rdma/rdma_netlink.h>
 #include <rdma/iw_portmap.h>
+#include <rdma/restrack.h>
 
 #include "cxgb4.h"
 #include "cxgb4_uld.h"
@@ -1078,4 +1079,8 @@ extern int use_dsgl;
 void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey);
 struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp);
 
+typedef int c4iw_restrack_func(struct sk_buff *msg,
+			       struct rdma_restrack_entry *res);
+extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX];
+
 #endif