svc: Add xpo_accept transport function
Previously, the accept logic looked into the socket state to determine whether to call accept or recv when data-ready was indicated on an endpoint. Since some transports don't use sockets, this logic now uses a flag bit (SK_LISTENER) to identify listening endpoints. A transport function (xpo_accept) allows each transport to define its own accept processing. A transport's initialization logic is reponsible for setting the SK_LISTENER bit. I didn't see any way to do this in transport independent logic since the passive side of a UDP connection doesn't listen and always recv's. In the svc_recv function, if the SK_LISTENER bit is set, the transport xpo_accept function is called to handle accept processing. Note that all functions are defined even if they don't make sense for a given transport. For example, accept doesn't mean anything for UDP. The function is defined anyway and bug checks if called. The UDP transport should never set the SK_LISTENER bit. Signed-off-by:Tom Tucker <tom@opengridcomputing.com> Acked-by:
Neil Brown <neilb@suse.de> Reviewed-by:
Chuck Lever <chuck.lever@oracle.com> Reviewed-by:
Greg Banks <gnb@sgi.com> Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu>
parent
d7979ae4
Please register or sign in to comment