Purpose: Display rds connection and its related qpn, cqn and ird lines

Arguments: None

Output format: [<src-ip>, <dst-ip>, <tos>] conn=<rds_connection object>
ic=<rds_ib_connection object> qpn=<source qp number> dqpn=<destination qp
number> scqn=<source completion queue number> scqirq=<source completion queue
irq number> rcqn=<receive completion queue number> rcqirq=<receive completion
queue irq number>

Note: This scripts works only on CX-5/RoCE based machine

Sample output: Shown below.

# ./rds_conn2irq.d
2022 Sep  1 03:26:05 print rds conn to irq mapping. Run rds-info -I parallelly to populate. ctrl+c to stop and print summary

[<192.168.100.125,192.168.100.63,0>] conn=ffff8d93e96e8148 ic=ffff8d35fa43c000 qpn=156 dqpn=0 scqn=1210 scqirq=546 rcqn=1211 rcqirq=545
^C
Summary:
        irqn    count
         545        1