[PATCH v3 iproute2-next 0/8] cm_id, cq, mr, and pd resource tracking

Hello,

This series enhances the iproute2 rdma tool to include dumping of
connection manager id (cm_id), completion queue (cq), memory region (mr),
and protection domain (pd) rdma resources.  It is the user-space part
of the kernel resource tracking series merged into rdma-next for 4.17 [1].

Changes since v2:
- pull in rdma-core include/rdma/rdma_cma.h
- update the new local rdma/include/uapi/rdma/rdma_netlink.h
- 80 column reformat
- add reviewed-by tags

Changes since v1/RFC:
- removed RFC tag
- initialize rd properly to avoid passing a garbage port number
- revert accidental change to qp_valid_filters 
- removed cm_id dev/network/transport types
- cm_id ip addrs now passed up as __kernel_sockaddr_storage
- cm_id ip address ports printed as "address:port" strings
- only parse/display memory keys and iova if available
- filter on "users" for cqs and pds
- fixed memory leaks 
- removed PD_FLAGS attribute
- filter on "mrlen" for mrs
- filter on "poll-ctx" for cqs
- don't require addrs or qp_type for parsing cm_ids
- only filter optional attrs if they are present
- remove PGSIZE MR attr to match kernel 

[1] https://www.spinics.net/lists/linux-rdma/msg61720.html

---

Steve Wise (8):
  rdma: include rdma-core <rdma/rdma_cma.h>
  rdma: Makefile change to find <rdma/rdma_cma.h>
  rdma: update rdma_netlink.h
  rdma: initialize the rd struct
  rdma: Add CM_ID resource tracking information
  rdma: Add CQ resource tracking information
  rdma: Add MR resource tracking information
  rdma: Add PD resource tracking information

 include/json_writer.h                 |   2 +
 lib/json_writer.c                     |  11 +
 rdma/Makefile                         |   2 +-
 rdma/include/rdma/rdma_cma.h          | 728 ++++++++++++++++++++++++++++++++++
 rdma/include/uapi/rdma/rdma_netlink.h |  38 ++
 rdma/rdma.c                           |   2 +-
 rdma/rdma.h                           |   2 +
 rdma/res.c                            | 623 ++++++++++++++++++++++++++++-
 rdma/utils.c                          |  16 +
 9 files changed, 1421 insertions(+), 3 deletions(-)
 create mode 100644 rdma/include/rdma/rdma_cma.h

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1.8.3.1