HelenOS sources

udp_assoc_userptr  100 uspace/lib/inet/include/inet/udp.h extern void *udp_assoc_userptr(udp_assoc_t *);
udp_assoc_userptr  103 uspace/srv/net/dhcp/transport.c 	dt = (dhcp_transport_t *)udp_assoc_userptr(assoc);
HelenOS homepage, sources at GitHub