474 	struct socket *so;  in fifo_kqfilter()  local
481 		so = fip->fi_readsock;  in fifo_kqfilter()
482 		sb = &so->so_rcv;  in fifo_kqfilter()
492 		so = fip->fi_writesock;  in fifo_kqfilter()
493 		sb = &so->so_snd;  in fifo_kqfilter()
505 		so = fip->fi_readsock;  in fifo_kqfilter()
506 		sb = &so->so_rcv;  in fifo_kqfilter()
512 	ap->a_kn->kn_hook = so;  in fifo_kqfilter()
522 	struct socket *so = (struct socket *)kn->kn_hook;  in filt_fifordetach()  local
524 	klist_remove(&so->so_rcv.sb_klist, kn);  in filt_fifordetach()
530 	struct socket *so = kn->kn_hook;  in filt_fiforead()  local
533 	MUTEX_ASSERT_LOCKED(&so->so_rcv.sb_mtx);  in filt_fiforead()
535 	kn->kn_data = so->so_rcv.sb_cc;  in filt_fiforead()
536 	if (so->so_rcv.sb_state & SS_CANTRCVMORE) {  in filt_fiforead()
539 			if (so->so_state & SS_ISDISCONNECTED)  in filt_fiforead()
556 	struct socket *so = (struct socket *)kn->kn_hook;  in filt_fifowdetach()  local
558 	klist_remove(&so->so_snd.sb_klist, kn);  in filt_fifowdetach()
564 	struct socket *so = kn->kn_hook;  in filt_fifowrite()  local
567 	MUTEX_ASSERT_LOCKED(&so->so_snd.sb_mtx);  in filt_fifowrite()
569 	kn->kn_data = sbspace_locked(&so->so_snd);  in filt_fifowrite()
570 	if (so->so_snd.sb_state & SS_CANTSENDMORE) {  in filt_fifowrite()
575 		rv = (kn->kn_data >= so->so_snd.sb_lowat);  in filt_fifowrite()
584 	struct socket *so = kn->kn_hook;  in filt_fifoexcept()  local
587 	MUTEX_ASSERT_LOCKED(&so->so_rcv.sb_mtx);  in filt_fifoexcept()
590 		if (so->so_state & SS_ISDISCONNECTED) {  in filt_fifoexcept()
604 	struct socket *so = kn->kn_hook;  in filt_fiformodify()  local
607 	solock(so);  in filt_fiformodify()
608 	mtx_enter(&so->so_rcv.sb_mtx);  in filt_fiformodify()
610 	mtx_leave(&so->so_rcv.sb_mtx);  in filt_fiformodify()
611 	sounlock(so);  in filt_fiformodify()
619 	struct socket *so = kn->kn_hook;  in filt_fiforprocess()  local
622 	solock(so);  in filt_fiforprocess()
623 	mtx_enter(&so->so_rcv.sb_mtx);  in filt_fiforprocess()
625 	mtx_leave(&so->so_rcv.sb_mtx);  in filt_fiforprocess()
626 	sounlock(so);  in filt_fiforprocess()
634 	struct socket *so = kn->kn_hook;  in filt_fifowmodify()  local
637 	mtx_enter(&so->so_snd.sb_mtx);  in filt_fifowmodify()
639 	mtx_leave(&so->so_snd.sb_mtx);  in filt_fifowmodify()
647 	struct socket *so = kn->kn_hook;  in filt_fifowprocess()  local
650 	mtx_enter(&so->so_snd.sb_mtx);  in filt_fifowprocess()
652 	mtx_leave(&so->so_snd.sb_mtx);  in filt_fifowprocess()