[openib-general] APM support in openib stack

[Venkatesh Babu]

 I don't think there is any event which says "path1 is back again". It 
is the application which needs to load the alternate path. The HW just 
sends an event IB_EVENT_PORT_ACTIVE when port comes up. Upon recipt of 
the this event the application has to see if there exists a path from 
this port to the remote node and then load this alternate path by 
sending the APR message.
PS: In Gen1 implementation there was an event called IB_PATH_MIG_ARMED 
which was generated by HW/FW after loading the alternate path by the 
application.

 SA event notification is to just callback registered handlers when 
IB_EVENT_PORT_ACTIVE event occurrs on any node in the subnet or  on a 
specific node according to the registeration parameters.

 VBabu

somenath wrote:

> Sean,
>
> will there be a new API for SA event notification?
> today we already get this IB_EVENT_PATH_MIG (as defined below),  will  
> "path1 is back again" event
> be delivered the same way?
>
> thanks, som.
>
> enum ib_event_type {
>    IB_EVENT_CQ_ERR,
>    IB_EVENT_QP_FATAL,
>    IB_EVENT_QP_REQ_ERR,
>    IB_EVENT_QP_ACCESS_ERR,
>    IB_EVENT_COMM_EST,
>    IB_EVENT_SQ_DRAINED,
>    IB_EVENT_PATH_MIG,
>    IB_EVENT_PATH_MIG_ERR,
>    IB_EVENT_DEVICE_FATAL,
>    IB_EVENT_PORT_ACTIVE,
>    IB_EVENT_PORT_ERR,
>    IB_EVENT_LID_CHANGE,
>    IB_EVENT_PKEY_CHANGE,
>    IB_EVENT_SM_CHANGE,
>    IB_EVENT_SRQ_ERR,
>    IB_EVENT_SRQ_LIMIT_REACHED,
>    IB_EVENT_QP_LAST_WQE_REACHED
> };