ip_ire.c (7c478bd9) ip_ire.c (7663b816)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *

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15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *

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15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26/* Copyright (c) 1990 Mentat Inc. */
27
28#pragma ident "%Z%%M% %I% %E% SMI"
29
30
31/*

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6588 * packet's ultimate destination address, not a router address.
6589 *
6590 * This function is used when the caller wants to know the outbound interface
6591 * and MAC header for a packet given only the address.
6592 */
6593mblk_t *
6594ip_nexthop_route(const struct sockaddr *target, char *ifname)
6595{
24 * Use is subject to license terms.
25 */
26/* Copyright (c) 1990 Mentat Inc. */
27
28#pragma ident "%Z%%M% %I% %E% SMI"
29
30
31/*

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6588 * packet's ultimate destination address, not a router address.
6589 *
6590 * This function is used when the caller wants to know the outbound interface
6591 * and MAC header for a packet given only the address.
6592 */
6593mblk_t *
6594ip_nexthop_route(const struct sockaddr *target, char *ifname)
6595{
6596 struct nce_s *nce;
6596 ire_t *dir, *gw;
6597 ill_t *ill;
6598 mblk_t *mp;
6599
6600 /* parameter sanity */
6601 if (ifname == NULL || target == NULL)
6602 return (NULL);
6603

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6613 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|MATCH_IRE_RECURSIVE);
6614 break;
6615 case AF_INET6:
6616 dir = ire_route_lookup_v6(
6617 &((struct sockaddr_in6 *)target)->sin6_addr,
6618 NULL,
6619 0, 0, NULL, &gw, ALL_ZONES,
6620 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|MATCH_IRE_RECURSIVE);
6597 ire_t *dir, *gw;
6598 ill_t *ill;
6599 mblk_t *mp;
6600
6601 /* parameter sanity */
6602 if (ifname == NULL || target == NULL)
6603 return (NULL);
6604

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6614 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|MATCH_IRE_RECURSIVE);
6615 break;
6616 case AF_INET6:
6617 dir = ire_route_lookup_v6(
6618 &((struct sockaddr_in6 *)target)->sin6_addr,
6619 NULL,
6620 0, 0, NULL, &gw, ALL_ZONES,
6621 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|MATCH_IRE_RECURSIVE);
6622 if ((dir != NULL) && (dir->ire_nce == NULL)) {
6623 ire_refrele(dir);
6624 dir = NULL;
6625 }
6621 break;
6622 default:
6623 dir = NULL;
6624 break;
6625 }
6626
6627
6628 if (dir == NULL)
6629 return (NULL);
6630
6631 /* Map the IRE to an ILL so we can fill in ifname. */
6632 ill = ire_to_ill(dir);
6633 if (ill == NULL) {
6634 ire_refrele(dir);
6635 return (NULL);
6636 }
6637 (void) strncpy(ifname, ill->ill_name, LIFNAMSIZ);
6638
6639 /* Return a copy of the header to the caller. */
6626 break;
6627 default:
6628 dir = NULL;
6629 break;
6630 }
6631
6632
6633 if (dir == NULL)
6634 return (NULL);
6635
6636 /* Map the IRE to an ILL so we can fill in ifname. */
6637 ill = ire_to_ill(dir);
6638 if (ill == NULL) {
6639 ire_refrele(dir);
6640 return (NULL);
6641 }
6642 (void) strncpy(ifname, ill->ill_name, LIFNAMSIZ);
6643
6644 /* Return a copy of the header to the caller. */
6640 if (dir->ire_fp_mp != NULL) {
6641 if ((mp = dupb(dir->ire_fp_mp)) == NULL)
6642 mp = copyb(dir->ire_fp_mp);
6643 } else if (dir->ire_dlureq_mp != NULL) {
6644 if ((mp = dupb(dir->ire_dlureq_mp)) == NULL)
6645 mp = copyb(dir->ire_dlureq_mp);
6646 } else {
6647 mp = NULL;
6645 switch (target->sa_family) {
6646 case AF_INET :
6647 if (dir->ire_fp_mp != NULL) {
6648 if ((mp = dupb(dir->ire_fp_mp)) == NULL)
6649 mp = copyb(dir->ire_fp_mp);
6650 } else if (dir->ire_dlureq_mp != NULL) {
6651 if ((mp = dupb(dir->ire_dlureq_mp)) == NULL)
6652 mp = copyb(dir->ire_dlureq_mp);
6653 } else {
6654 mp = NULL;
6655 }
6656 break;
6657 case AF_INET6 :
6658 nce = dir->ire_nce;
6659 if (nce->nce_fp_mp != NULL) {
6660 if ((mp = dupb(nce->nce_fp_mp)) == NULL)
6661 mp = copyb(nce->nce_fp_mp);
6662 } else if (nce->nce_res_mp != NULL) {
6663 if ((mp = dupb(nce->nce_res_mp)) == NULL)
6664 mp = copyb(nce->nce_res_mp);
6665 } else {
6666 mp = NULL;
6667 }
6668 break;
6648 }
6649
6650 ire_refrele(dir);
6651 return (mp);
6652}
6653
6654
6655/*

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6661 *
6662 * This function is used when the caller knows the outbound interface (usually
6663 * because it was specified by policy) and only needs the MAC header for a
6664 * packet.
6665 */
6666mblk_t *
6667ip_nexthop(const struct sockaddr *target, const char *ifname)
6668{
6669 }
6670
6671 ire_refrele(dir);
6672 return (mp);
6673}
6674
6675
6676/*

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6682 *
6683 * This function is used when the caller knows the outbound interface (usually
6684 * because it was specified by policy) and only needs the MAC header for a
6685 * packet.
6686 */
6687mblk_t *
6688ip_nexthop(const struct sockaddr *target, const char *ifname)
6689{
6690 struct nce_s *nce;
6669 ill_walk_context_t ctx;
6670 t_uscalar_t sap;
6671 ire_t *dir, *gw;
6672 ill_t *ill;
6673 mblk_t *mp;
6674
6675 /* parameter sanity */
6676 if (ifname == NULL || target == NULL)

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6725 MATCH_IRE_RECURSIVE|MATCH_IRE_IPIF);
6726 break;
6727 case AF_INET6:
6728 dir = ire_route_lookup_v6(
6729 &((struct sockaddr_in6 *)target)->sin6_addr, NULL,
6730 0, 0, ill->ill_ipif, &gw, ALL_ZONES,
6731 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|
6732 MATCH_IRE_RECURSIVE|MATCH_IRE_IPIF);
6691 ill_walk_context_t ctx;
6692 t_uscalar_t sap;
6693 ire_t *dir, *gw;
6694 ill_t *ill;
6695 mblk_t *mp;
6696
6697 /* parameter sanity */
6698 if (ifname == NULL || target == NULL)

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6747 MATCH_IRE_RECURSIVE|MATCH_IRE_IPIF);
6748 break;
6749 case AF_INET6:
6750 dir = ire_route_lookup_v6(
6751 &((struct sockaddr_in6 *)target)->sin6_addr, NULL,
6752 0, 0, ill->ill_ipif, &gw, ALL_ZONES,
6753 MATCH_IRE_DSTONLY|MATCH_IRE_DEFAULT|
6754 MATCH_IRE_RECURSIVE|MATCH_IRE_IPIF);
6755 if ((dir != NULL) && (dir->ire_nce == NULL)) {
6756 ire_refrele(dir);
6757 dir = NULL;
6758 }
6733 break;
6734 default:
6735 dir = NULL;
6736 break;
6737 }
6738
6739 ill_refrele(ill);
6740
6741 if (dir == NULL)
6742 return (NULL);
6743
6744 /* Return a copy of the header to the caller. */
6759 break;
6760 default:
6761 dir = NULL;
6762 break;
6763 }
6764
6765 ill_refrele(ill);
6766
6767 if (dir == NULL)
6768 return (NULL);
6769
6770 /* Return a copy of the header to the caller. */
6745 if (dir->ire_fp_mp != NULL) {
6746 if ((mp = dupb(dir->ire_fp_mp)) == NULL)
6747 mp = copyb(dir->ire_fp_mp);
6748 } else if (dir->ire_dlureq_mp != NULL) {
6749 if ((mp = dupb(dir->ire_dlureq_mp)) == NULL)
6750 mp = copyb(dir->ire_dlureq_mp);
6751 } else {
6752 mp = NULL;
6771 switch (target->sa_family) {
6772 case AF_INET :
6773 if (dir->ire_fp_mp != NULL) {
6774 if ((mp = dupb(dir->ire_fp_mp)) == NULL)
6775 mp = copyb(dir->ire_fp_mp);
6776 } else if (dir->ire_dlureq_mp != NULL) {
6777 if ((mp = dupb(dir->ire_dlureq_mp)) == NULL)
6778 mp = copyb(dir->ire_dlureq_mp);
6779 } else {
6780 mp = NULL;
6781 }
6782 break;
6783 case AF_INET6 :
6784 nce = dir->ire_nce;
6785 if (nce->nce_fp_mp != NULL) {
6786 if ((mp = dupb(nce->nce_fp_mp)) == NULL)
6787 mp = copyb(nce->nce_fp_mp);
6788 } else if (nce->nce_res_mp != NULL) {
6789 if ((mp = dupb(nce->nce_res_mp)) == NULL)
6790 mp = copyb(nce->nce_res_mp);
6791 } else {
6792 mp = NULL;
6793 }
6794 break;
6753 }
6754
6795 }
6796
6755
6756 ire_refrele(dir);
6757 return (mp);
6758}
6759
6760/*
6761 * IRE iterator for inbound and loopback broadcast processing.
6762 * Given an IRE_BROADCAST ire, walk the ires with the same destination
6763 * address, but skip over the passed-in ire. Returns the next ire without

--- 216 unchanged lines hidden --- 		6797 ire_refrele(dir);
6798 return (mp);
6799}
6800
6801/*
6802 * IRE iterator for inbound and loopback broadcast processing.
6803 * Given an IRE_BROADCAST ire, walk the ires with the same destination
6804 * address, but skip over the passed-in ire. Returns the next ire without

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