Sean,
Is there documentation or a piece of sample code that shows how to interact with the CM correctly?
james
On Thu, 5 May 2005, Sean Hefty wrote:
This came up on a separate thread...
Currently the cm_id structured defined in ib_cm.h exposes a state field. This (and a couple of other fields) were originally exposed only for debug purposes, but I've noticed that both kDAPL and SDP access this field.
The issue is that access to the cm_id state must be protected by a lock in order to guarantee correct operation of the CM state machine. Because CM messages can be received at any time, the cm_id state could change if it is accessed outside of the locks.
While in a CM callback, the reported event should be used to determine the correct operation to take, rather than reading the cm_id state. I will try to work up some patches to correct this.
I will at the very least add comment to ib_cm.h about using these fields, or move them into the internal CM data structures.
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