[stgt] SLP (rfc4018) support

[Môshe van der Sterre]

Hello,

Is there any intention in supporting SLP (discovery) support for the 
iSCSI target?
RFC 4018 (http://www.ietf.org/rfc/rfc4018.txt) specifies this feature 
in some detail.
I think it would be relatively easy to implement this, using for 
example OpenSLP.

I have looked a bit at the code implementing iSNS, and it seems to me 
SLP support could use the same general design as the iSNS code.

Am I correct in the following assumptions?
 * A function slp_target_register, called at the end of 
iscsi_target_create could be created that collects ACL information and 
passes this to SLPReg (from OpenSLP).
 * Simmilarly, a function slp_target_unregister, called at the end of 
iscsi_target_destroy could be created to deregister.
 * iscsi_target_update should call an 'update' function, for setting 
SLP on/off.
 * Code could possibly be shared with the iSNS feature, but this 
requires changing a lot of the iSNS code.

If there is an interest in this, I can spend some time trying to 
implement this. (If there isn't I can just write a wrapper script that 
calls the slptool to register/deregister, I don't really need the ACL 
features)
Any toughts and comments are appreciated!

Greetings,
Môshe van der Sterre

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