[openib-general] Send SA request over umad problem.

[Liran Sorani]

Hi ,
I'm working on the SM group at Mellanox.
While testing SM-gen2 on a loopback , I've encountered a basic problem
trying to send an SA query (single mad) over osm_vendor (gen2).
Trying to send the request using osm_vendor_send , passed succesfully , BUT
got from the receiver (umad_recv) an error (in  an endless loop ): "No space
left on device". The MAD request was simple GSI - SA request of
ClassPortInfo , here are the details , I've truned on debug mode of
vendor_lib and umad (marked in red the important lines in the log ):
...
Aug 02 03:35:49 [401776C0] -> osm_vendor_send: [
warn: [19219] umad_set_addr_net: umad 0x80810d0 dlid 1 dqp 1 sl, qkey 0
warn: [19219] umad_dump: agent id 0 status 0 timeout 0
warn: [19219] umad_addr_dump: qpn 1 qkey 0x80010000 lid 0x1 sl 0
grh_present 0 gid_index 0 hop_limit 0 traffic_class 0 flow_label 0x0
Gid 0x00000000000000000000000000000000
Aug 02 03:35:49 [401776C0] -> osm_vendor_send: RMPP 0 length 256
warn: [19219] umad_send: portid 0 agentid 0 umad 0x80810d0 timeout 1000
Aug 02 03:35:49 [401776C0] -> osm_vendor_send: Completed Sending Request
p_madw = 0x80807dc.
Aug 02 03:35:49 [401776C0] -> osm_vendor_send: ]
Aug 02 03:35:49 [401776C0] -> __osmv_send_sa_req: Waiting for async event.
warn: [19219] umad_recv: read returned 356 > sizeof umad 56 + length 256 (No
space left on device)
Aug 02 03:35:49 [40D7EBB0] -> umad_receiver: recv error No space left on
device
warn: [19219] umad_recv: portid 0 umad 0x8080e28 timeout 4294967295
warn: [19219] umad_recv: read returned 356 > sizeof umad 56 + length 256 (No
space left on device)
Aug 02 03:35:49 [40D7EBB0] -> umad_receiver: recv error No space left on
device
warn: [19219] umad_recv: portid 0 umad 0x8080e28 timeout 4294967295
warn: [19219] umad_recv: read returned 356 > sizeof umad 56 + length 256 (No
space left on device)
Aug 02 03:35:49 [40D7EBB0] -> umad_receiver: recv error No space left on
device
warn: [19219] umad_recv: portid 0 umad 0x8080e28 timeout 4294967295
warn: [19219] umad_recv: read returned 356 > sizeof umad 56 + length 256 (No
space left on device)
Aug 02 03:35:49 [40D7EBB0] -> umad_receiver: recv error No space left on
device
...

Thanks , in advance for your help .

>       Liran Sorani
>       Mellanox Technologies LTD.
>       mailto:liran at mellanox.co.il <mailto:liran at mellanox.co.il> 
>       Phone: +972(4)9097200 Ext: 214
>       Israel, Yokneam P.O.B 586 ZIP 20692
>
>


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