ppp/sppp/sppp.c

113  * and multiple sps streams (upper streams) may share a ppa by performing
151 	spppstr_t	*sps;
165 	 * The sps list is sorted using the minor number as the key. The
170 	for (nextmn = &sps_list; (sps = *nextmn) != NULL;
171 	    nextmn = &sps->sps_nextmn) {
172 		if (sps->sps_mn_id != mn) {
177 	sps = (spppstr_t *)kmem_zalloc(sizeof (spppstr_t), KM_SLEEP);
178 	ASSERT(sps != NULL);		/* KM_SLEEP must never return NULL */
179 	sps->sps_nextmn = *nextmn;	/* insert stream in global list */
180 	*nextmn = sps;
181 	sps->sps_mn_id = mn;		/* save minor id for this stream */
182 	sps->sps_rq = q;		/* save read queue pointer */
183 	sps->sps_sap = -1;		/* no sap bound to stream */
184 	sps->sps_dlstate = DL_UNATTACHED; /* dlpi state is unattached */
185 	sps->sps_npmode = NPMODE_DROP;	/* drop all packets initially */
186 	sps->sps_zoneid = crgetzoneid(credp);
187 	q->q_ptr = WR(q)->q_ptr = (caddr_t)sps;
324 	spppstr_t	*sps;
331 	sps = (spppstr_t *)q->q_ptr;
334 	ppa = sps->sps_ppa;
336 		ASSERT(!IS_SPS_CONTROL(sps));
339 	if (IS_SPS_CONTROL(sps)) {
343 		ASSERT(ppa->ppa_ctl == sps);
391 		ASSERT(ppa->ppa_ctl != sps);
393 		if (sps->sps_sap == PPP_IP) {
396 		} else if (sps->sps_sap == PPP_IPV6) {
402 		    (sps->sps_npmode == NPMODE_PASS ||
403 		    sps->sps_npmode == NPMODE_QUEUE)) {
416 		if (sib == sps) {
417 			ppa->ppa_streams = sps->sps_nextsib;
420 				if (sib->sps_nextsib == sps) {
421 					sib->sps_nextsib = sps->sps_nextsib;
427 		sps->sps_nextsib = NULL;
428 		freemsg(sps->sps_hangup);
429 		sps->sps_hangup = NULL;
438 		if (IS_SPS_PROMISC(sps)) {
452 		if (*nextmn == sps) {
453 			*nextmn = sps->sps_nextmn;
457 	kmem_free(sps, sizeof (spppstr_t));
464 	spppstr_t	*sps;
478 	sps = (spppstr_t *)q->q_ptr;
479 	ppa = sps->sps_ppa;
484 		if (!IS_SPS_CONTROL(sps)) {
493 		ASSERT(sps->sps_npmode == NPMODE_PASS);
523 			ASSERT(!IS_SPS_CONTROL(sps));
584 			if (IS_SPS_IOCQ(sps)) {
598 				sps->sps_ioc_id = iop->ioc_id;
599 				sps->sps_flags |= SPS_IOCQ;
639 			if (IS_SPS_IOCQ(sps)) {
653 				sps->sps_ioc_id = iop->ioc_id;
654 				sps->sps_flags |= SPS_IOCQ;
702 	spppstr_t	*sps;
709 	sps = (spppstr_t *)q->q_ptr;
710 	ppa = sps->sps_ppa;
715 		if (IS_SPS_CONTROL(sps)) {
739 			(void) sppp_mproto(q, mp, sps);
744 		if ((nextq = sppp_send(q, &mp, sps)) != NULL)
797 			if (IS_SPS_IOCQ(sps)) {
811 				sps->sps_ioc_id = iop->ioc_id;
812 				sps->sps_flags |= SPS_IOCQ;
855 	spppstr_t	*sps;
862 	sps = (spppstr_t *)q->q_ptr;
866 			ppa = sps->sps_ppa;
878 			if (IS_SPS_IOCQ(sps)) {
885 				sps->sps_ioc_id = iop->ioc_id;
886 				sps->sps_flags |= SPS_IOCQ;
891 		    sppp_outpkt(q, &mp, msgdsize(mp), sps)) == NULL) {
904 sppp_remove_ppa(spppstr_t *sps)
907 	sppa_t *ppa = sps->sps_ppa;
915 		if (nextsib == sps) {
916 			ppa->ppa_streams = sps->sps_nextsib;
919 				if (nextsib->sps_nextsib == sps) {
921 					    sps->sps_nextsib;
936 		if (IS_SPS_PROMISC(sps)) {
942 	sps->sps_nextsib = NULL;
943 	sps->sps_ppa = NULL;
944 	freemsg(sps->sps_hangup);
945 	sps->sps_hangup = NULL;
974 	spppstr_t	*sps;
989 	sps = (spppstr_t *)q->q_ptr;
990 	ppa = sps->sps_ppa;
994 		if (IS_SPS_CONTROL(sps)) {
997 		sps->sps_flags |= SPS_RAWDATA;
1001 		if (IS_SPS_CONTROL(sps)) {
1022 		*(uchar_t *)nmp->b_wptr++ = sps->sps_sap >> 8;
1023 		*(uchar_t *)nmp->b_wptr++ = sps->sps_sap & 0xff;
1027 		sps->sps_flags |= SPS_FASTPATH;
1032 		if (IS_SPS_CONTROL(sps) || IS_SPS_PIOATTACH(sps) ||
1033 		    (sps->sps_dlstate != DL_UNATTACHED) ||
1043 			sppp_remove_ppa(sps);
1067 		if ((sps->sps_hangup = allocb(1, BPRI_MED)) == NULL) {
1079 		sps->sps_flags |= SPS_PIOATTACH;
1080 		sps->sps_ppa = ppa;
1087 		sps->sps_nextsib = ppa->ppa_streams;
1088 		ppa->ppa_streams = sps;
1143 			sps->sps_flags |= SPS_KDEBUG;
1161 		if (IS_SPS_IOCQ(sps)) {
1175 			sps->sps_ioc_id = iop->ioc_id;
1176 			sps->sps_flags |= SPS_IOCQ;
1182 		if (!IS_SPS_PIOATTACH(sps)) {
1193 		ASSERT(ppa->ppa_ctl != sps);
1194 		ASSERT(sps->sps_dlstate == DL_UNATTACHED);
1201 		sps->sps_flags &= ~SPS_PIOATTACH;
1205 		if (!IS_SPS_CONTROL(sps)) {
1213 		if (!IS_SPS_CONTROL(sps) ||
1243 		if (!IS_SPS_CONTROL(sps) ||
1270 		if (!IS_SPS_CONTROL(sps)) {
1304 	spppstr_t	*sps = q->q_ptr;
1315 	sps = (spppstr_t *)q->q_ptr;
1316 	ppa = sps->sps_ppa;
1320 		if (!IS_SPS_CONTROL(sps)) {
1327 		ASSERT(sps->sps_npmode == NPMODE_PASS);
1340 		if (WR(sps->sps_rq)->q_first != NULL)
1341 			qenable(WR(sps->sps_rq));
1369 		if (IS_SPS_KDEBUG(sps)) {
1371 			    "/%d: I_LINK lwq=0x%p sps=0x%p flags=0x%b ppa=0x%p "
1372 			    "flags=0x%b\n", sps->sps_mn_id,
1373 			    (void *)ppa->ppa_lower_wq, (void *)sps,
1374 			    sps->sps_flags, SPS_FLAGS_STR,
1381 		ASSERT(IS_SPS_CONTROL(sps));
1387 		if (IS_SPS_KDEBUG(sps)) {
1389 			    "/%d: I_UNLINK lwq=0x%p sps=0x%p flags=0x%b "
1390 			    "ppa=0x%p flags=0x%b\n", sps->sps_mn_id,
1391 			    (void *)lwq, (void *)sps, sps->sps_flags,
1409 		if (WR(sps->sps_rq)->q_first != NULL)
1410 			qenable(WR(sps->sps_rq));
1432 		} else if (IS_SPS_CONTROL(sps) || IS_SPS_PIOATTACH(sps) ||
1433 		    (ppa != NULL) || (sps->sps_dlstate != DL_UNATTACHED)) {
1485 		sps->sps_ppa = ppa;		/* chain the ppa structure */
1486 		sps->sps_npmode = NPMODE_PASS;	/* network packets may travel */
1487 		sps->sps_flags |= SPS_CONTROL;	/* this is the control stream */
1490 		ppa->ppa_ctl = sps;		/* back ptr to upper stream */
1498 		if (IS_SPS_KDEBUG(sps)) {
1500 			    "/%d: PPPIO_NEWPPA ppa_id=%d sps=0x%p flags=0x%b "
1501 			    "ppa=0x%p flags=0x%b\n", sps->sps_mn_id, ppa_id,
1502 			    (void *)sps, sps->sps_flags, SPS_FLAGS_STR,
1532 sppp_send(queue_t *q, mblk_t **mpp, spppstr_t *sps)
1545 	ASSERT(sps != NULL);
1546 	ASSERT(q->q_ptr == sps);
1553 	ppa = sps->sps_ppa;
1555 		ASSERT(!IS_SPS_CONTROL(sps));
1557 	} else if (!IS_SPS_CONTROL(sps) && !IS_SPS_FASTPATH(sps)) {
1583 	if (IS_SPS_KDEBUG(sps)) {
1585 		    "/%d: M_DATA send (%d bytes) sps=0x%p flags=0x%b "
1586 		    "ppa=0x%p flags=0x%b\n", sps->sps_mn_id, msize,
1587 		    (void *)sps, sps->sps_flags, SPS_FLAGS_STR,
1598 	is_promisc = sps->sps_ppa->ppa_promicnt;
1601 		sppp_dlprsendup(ppa->ppa_streams, mp, sps->sps_sap, B_TRUE);
1609 	if (!IS_SPS_CONTROL(sps) && IS_PPA_TIMESTAMP(ppa)) {
1618 	    (nextq = sppp_outpkt(q, mpp, msize, sps)) == NULL) {
1652 sppp_outpkt(queue_t *q, mblk_t **mpp, int msize, spppstr_t *sps)
1663 	ASSERT(sps != NULL);
1665 	ppa = sps->sps_ppa;
1666 	npmode = sps->sps_npmode;
1669 		ASSERT(!IS_SPS_CONTROL(sps));
1677 		ASSERT(!IS_SPS_CONTROL(sps));
1725 		if (!IS_SPS_CONTROL(sps)) {
1726 			sps->sps_npmode = NPMODE_DROP;
1739 		if (IS_SPS_CONTROL(sps)) {
1804 	spppstr_t	*sps;
1811 	sps = ppa->ppa_ctl;
1814 		sppp_recv_nondata(q, mp, sps);
1815 	} else if (sps == NULL) {
1817 	} else if ((q = sppp_recv(q, &mp, sps)) != NULL) {
2072 				    "/%d: M_DATA recv (%d bytes) sps=0x%p "
2091 			    "/%d: M_DATA recv (%d bytes) sps=0x%p flags=0x%b "