RE: dumping queue state

["Steve Wise" <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>]

> WIP: no manuals, no review yet and not massively tested - but works for me
:
> 
> 
> >
> > Is there a way to extend commands with provider-specific data?
> >
> 
> In future yes, rdmatool provides "-d" option (detailed output) and IMHO
> all vendor specific will got there.

Cool.

Looksie:

[root@stevo1 iproute2]# ./rdma/rdma res
1: mlx4_0: curr/max: pd 4/32764 cq 17/65408 qp 3/163768
2: cxgb4_0: curr/max: pd 2/65536 cq 16/24576 qp 2/12288
2: cxgb4_0: curr/max: pd 2/65536 cq 16/24576 qp 2/12288

[root@stevo1 iproute2]# ./rdma/rdma res show qp link cxgb4_0
DEV/PORT  LQPN       TYPE  STATE  PID        COMM
cxgb4_0/- 1028       RC    RTS    0          [rdma-cm]
cxgb4_0/- 1026       RC    RTS    0          [rdma-cm]

I'm not sure why the port is not specified on the above cxgb4 QPs which are
connected.  They should have a port number.  But perhaps it isn't filled in
correctly in the cm_id or something?  

[root@stevo1 iproute2]# ./rdma/rdma res show qp link mlx4_0
DEV/PORT  LQPN       TYPE  STATE  PID        COMM
mlx4_0/1  537        RC    RTS    0          [rdma-cm]
mlx4_0/1  536        RC    RTS    0          [rdma-cm]
mlx4_0/1  1          GSI   RTS    0          [rdma-mad]
[root@stevo1 iproute2]#

rdma should probably understand enough transport-specific details to not
display ib-specific stuff on an iwarp qp.  Here PSNs and PATH-MIG are all
IB-specific:

[root@stevo1 iproute2]# ./rdma/rdma res show qp link cxgb4_0 -d
DEV/PORT  LQPN       RQPN       TYPE  STATE  PID        COMM
SQ-PSN     RQ-PSN     PATH-MIG
cxgb4_0/- 1028       0          RC    RTS    0          [rdma-cm]       0
0          MIGRATED
cxgb4_0/- 1026       0          RC    RTS    0          [rdma-cm]       0
0          MIGRATED

[root@stevo1 iproute2]# ./rdma/rdma res show qp link mlx4_0 -d
DEV/PORT  LQPN       RQPN       TYPE  STATE  PID        COMM
SQ-PSN     RQ-PSN     PATH-MIG
mlx4_0/1  537        537        RC    RTS    0          [rdma-cm]
13145128   12441844   MIGRATED
mlx4_0/1  536        536        RC    RTS    0          [rdma-cm]
14218681   1982803    MIGRATED
mlx4_0/1  1          ---        GSI   RTS    0          [rdma-mad]      0
---        ---

Looking good though!

Why did you prefer netlink vs debugfs for this stuff?  (I'm sure it was
discussed on the list but I missed it).

Steve.

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