A xio_rdma_disconnect problem over iwarp

[yandaweixx]

Dear Accelio-Team,
     This problem seems to be related with the iw_cxgb4 driver, and it seems to send a disconnect event twice.

[root@nn examples]# ./runHelloWorld.sh client 172.16.0.5 1234 1

LD library is: /home/JXIO-master/examples

Compiling JAVA files....

Running Client side test...
2016-07-11 09:49:41,656 main INFO HelloClient:75 Try to establish a new session to 'rdma://172.16.0.5:1234/'
2016-07-11 09:49:41,664 main INFO HelloClient:114 [SUCCESS] Session established! Hurray !
2016-07-11 09:49:41,665 main INFO HelloClient:118 [SUCCESS] Got a message! Bring the champagne!
2016-07-11 09:49:41,666 main INFO HelloClient:126 msg is: 'Hello to you too, Client'
2016-07-11 09:49:41,666 main INFO HelloClient:130 Closing the session...
2016-07-11 09:49:41,673 main INFO HelloClient:139 [EVENT] Got event SESSION_CLOSED because of SESSION_CLOSED
2016-07-11 09:49:41,673 main INFO HelloClient:64 Client is releasing JXIO resources and exiting
2016-07-11 09:49:41,673 main ERROR transport/rdma/xio_rdma_management.c:2165:xio_rdma_disconnect() rdma_hndl:0x7f71e01d2a70 rdma_disconnect failed, Invalid argument
2016-07-11 09:49:41,674 main ERROR transport/rdma/xio_rdma_management.c:2165:xio_rdma_disconnect() rdma_hndl:0x7f71e01d2a70 rdma_disconnect failed, Invalid argument
2016-07-11 09:49:41,674 main ERROR transport/rdma/xio_rdma_management.c:2270:on_cm_disconnected() rdma_hndl:0x7f71e01d2a70 rdma_disconnect failed, err=-1

[root@nn examples]# ./runHelloWorld.sh server 172.16.0.5 1234 0

LD library is: /home/JXIO-master/examples

Compiling JAVA files....

Running Server side test...
2016-07-11 09:49:26,438 main INFO HelloServer:52 waiting for JXIO incoming connections
2016-07-11 09:49:41,663 main INFO HelloServer:98 [SUCCESS] Got event onSessionNew from 172.16.0.5, URI='rdma://172.16.0.5:1234/'
2016-07-11 09:49:41,664 main INFO HelloServer:116 [SUCCESS] Got a message request! Prepare the champagne!
2016-07-11 09:49:41,665 main INFO HelloServer:124 msg is: 'Hello Server'
2016-07-11 09:49:41,670 main INFO HelloServer:149 [EVENT] Got event SESSION_CLOSED because of SESSION_DISCONNECTED
2016-07-11 09:49:41,670 main INFO HelloServer:154 Stopping the main EQH loop...
2016-07-11 09:49:41,671 main INFO HelloServer:82 Server is releasing JXIO resources and exiting
2016-07-11 09:49:41,672 main INFO HelloServer:104 [EVENT] Got event PORTAL_CLOSED because of SUCCESS
2016-07-11 09:49:41,672 main ERROR transport/rdma/xio_rdma_management.c:2165:xio_rdma_disconnect() rdma_hndl:0x7fc64c1fcf60 rdma_disconnect failed, Invalid argument
2016-07-11 09:49:41,672 main ERROR transport/rdma/xio_rdma_management.c:2270:on_cm_disconnected() rdma_hndl:0x7fc64c1fcf60 rdma_disconnect failed, err=-1

    And we have traced and located the bug in the iwarp driver at"ChelsioUwire-2.12.0.3/src/network/iw_cxgb4/qp.c:2148". Iwarp seems not support qp's state transform from IDLE to CLOSING.