<dec f='src/src/sys/net/if_spppvar.h' l='173' type='int sppp_isempty(struct ifnet * )'/>
<use f='src/src/sys/net/if_pppoe.c' l='1543' u='c' c='pppoe_start'/>
<def f='src/src/sys/net/if_spppsubr.c' l='991' ll='1002' type='int sppp_isempty(struct ifnet * ifp)'/>
<doc f='src/src/sys/net/if_spppsubr.c' l='988'>/*
 * Check if the output queue is empty.
 */</doc>
