On Friday, June 25, 2010 04:30:45 pm Wes Hardaker wrote: > > Hi i'm looking at net-snmp code to understand the main flow of the > > requests that come/go. I'm looking at netsnmp_register_handler > > (agent_handler.c:207) As far as i understand it makes some checks and > > passes the > > netsnmp_handler_registration *reginfo to netsnmp_register_mib function to > > register it to oid tree. My question actually is about > > netsnmp_register_mib (agent_registry.c:708) as far as i understand it > > creates a netsnmp_subtree *subtree it puts the reginfo in it but i dont > > see any place that this subtree is registered (attached to any global > > structure) can someone tell me what the netsnmp_register_mib is doing > > and what happens to created subtree structure ? > > I actually have been working toward putting more documentation about > that in the tutorials, but I don't think I'll get to that part until at > least after next week. > > The "netsnmp_subtree_load" is the function in "netsnmp_register_mib"
Yes i found the netsnmp_subtree_load but couldnt see the place where it stores the subtree into global list. Which data structure is that global "tree like ordered list" ? > that takes the subtree and stores it for future use. It gets stored in > an ordered list of subtrees that the agent later uses to look through > when an incoming request is received. Each OID in a request is paired > against the proper subtree from the ordered list so that the appropriate > registered handler can be found. Thanks for your answer it is clearer now. There is a tree like linked list that has the oids and every snmp_subtree has reginfo in it (that stores the handler chains). Therefore when a request comes its oid is searched in tree and the handlers that match in that snmp_subtree are called (in reverse order they were injected). Is it right ? ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ Net-snmp-coders mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
