Function syncache_drop

freebsd/netinet/tcp_syncache.c:415–434

* Remove and free entry from syncache bucket row. * Expects locked syncache head. */

 * Expects locked syncache head.
 */
static void
syncache_drop(struct syncache *sc, struct syncache_head *sch)
{

	SCH_LOCK_ASSERT(sch);

	TCPSTATES_DEC(TCPS_SYN_RECEIVED);
	TAILQ_REMOVE(&sch->sch_bucket, sc, sc_hash);
	sch->sch_length--;

#ifdef TCP_OFFLOAD
	if (ADDED_BY_TOE(sc)) {
		struct toedev *tod = sc->sc_tod;

		tod->tod_syncache_removed(tod, sc->sc_todctx);
	}
#endif

	syncache_free(sc);
}

/*
 * Engage/reengage time on bucket row.