Merge branch 'tipc-stats' into iproute2-next

GhantaKrishnamurthy MohanKrishna
         says:

====================

The following patchset add user space TIPC socket diagnostics support
in ss tool of iproute2. It requires the sock_diag framework
for AF_TIPC support in the kernel, commit id: c30b70deb5f
(tipc: implement socket diagnostics for AF_TIPC).

tipc socket stats are requested with the "--tipc" option. Additional
tipc specific info are requested with "--tipcinfo" option.

This patchset is based on top of iproute2 v4.15.0-100-g4f63187
commitid: f85adc6. It has been co-authored by
Parthasarathy Bhuvaragan.

Example output (the first socket is the internal topology server)

State  Recv-Q  Send-Q     Local Address:Port           Peer Address:Port
UNCONN 0       0               16781313:2809484547                 -             ino:13348 sk:4 users:(("tipc-pipe",pid=292,fd=3))
LISTEN 0       0               16781313:4117673024                 -             ino:13346 sk:5 users:(("tipc-pipe",pid=291,fd=3))
ESTAB  0       0               16781313:484097386          16781313:3203149317   ino:13345 sk:6 users:(("tipc-pipe",pid=294,fd=4))
LISTEN 0       0               16781313:2438310591                 -             ino:13344 sk:7 users:(("tipc-pipe",pid=294,fd=3),("tipc-pipe",pid=290,fd=3))
LISTEN 0       0               16781313:2658440413                 -             ino:12368 sk:3
ESTAB  0       0               16781313:3203149317         16781313:484097386    ino:13349 sk:8 users:(("tipc-pipe",pid=293,fd=3))

State  Recv-Q  Send-Q     Local Address:Port           Peer Address:Port
UNCONN 0       0               16781313:2809484547                 -
type:RDM cong:none  drop:0  publ
LISTEN 0       0               16781313:4117673024                 -
type:SEQPACKET cong:none  drop:0  publ
ESTAB  0       0               16781313:484097386          16781313:3203149317
type:STREAM cong:none  drop:0  via {1000,1000}
LISTEN 0       0               16781313:2438310591                 -
type:STREAM cong:none  drop:0  publ
LISTEN 0       0               16781313:2658440413                 -
type:SEQPACKET cong:none  drop:0  publ
ESTAB  0       0               16781313:3203149317         16781313:484097386
type:STREAM cong:none  drop:0  via {1000,1000}

====================

Signed-off-by: David Ahern <dsahern@gmail.com>