| if_ether.c (e11b6fa307b49a2a9ba2d0af0d80ddc103c84c10) | if_ether.c (478df1d534e9b1ca86261fcef37b46cc7b4c8f17) |
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| 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 482 unchanged lines hidden (view full) --- 491 * This allowed either end to announce the desire to receive 492 * trailer packets. 493 * We no longer reply to requests for ETHERTYPE_TRAIL protocol either, 494 * but formerly didn't normally send requests. 495 */ 496static int log_arp_wrong_iface = 1; 497static int log_arp_movements = 1; 498static int log_arp_permanent_modify = 1; | 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 482 unchanged lines hidden (view full) --- 491 * This allowed either end to announce the desire to receive 492 * trailer packets. 493 * We no longer reply to requests for ETHERTYPE_TRAIL protocol either, 494 * but formerly didn't normally send requests. 495 */ 496static int log_arp_wrong_iface = 1; 497static int log_arp_movements = 1; 498static int log_arp_permanent_modify = 1; |
| 499static int allow_multicast = 0; |
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| 499 500SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_wrong_iface, CTLFLAG_RW, 501 &log_arp_wrong_iface, 0, 502 "log arp packets arriving on the wrong interface"); 503SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_movements, CTLFLAG_RW, 504 &log_arp_movements, 0, 505 "log arp replies from MACs different than the one in the cache"); 506SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_permanent_modify, CTLFLAG_RW, 507 &log_arp_permanent_modify, 0, 508 "log arp replies from MACs different than the one in the permanent arp entry"); | 500 501SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_wrong_iface, CTLFLAG_RW, 502 &log_arp_wrong_iface, 0, 503 "log arp packets arriving on the wrong interface"); 504SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_movements, CTLFLAG_RW, 505 &log_arp_movements, 0, 506 "log arp replies from MACs different than the one in the cache"); 507SYSCTL_INT(_net_link_ether_inet, OID_AUTO, log_arp_permanent_modify, CTLFLAG_RW, 508 &log_arp_permanent_modify, 0, 509 "log arp replies from MACs different than the one in the permanent arp entry"); |
| 510SYSCTL_INT(_net_link_ether_inet, OID_AUTO, allow_multicast, CTLFLAG_RW, 511 &allow_multicast, 0, "accept multicast addresses"); |
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| 509 | 512 |
| 510 | |
| 511static void 512in_arpinput(struct mbuf *m) 513{ 514 struct arphdr *ah; 515 struct ifnet *ifp = m->m_pkthdr.rcvif; 516 struct llentry *la = NULL; 517 struct rtentry *rt; 518 struct ifaddr *ifa; --- 27 unchanged lines hidden (view full) --- 546 * a protocol length not equal to an IPv4 address. 547 */ 548 if (ah->ar_pln != sizeof(struct in_addr)) { 549 log(LOG_NOTICE, "in_arp: requested protocol length != %zu\n", 550 sizeof(struct in_addr)); 551 return; 552 } 553 | 513static void 514in_arpinput(struct mbuf *m) 515{ 516 struct arphdr *ah; 517 struct ifnet *ifp = m->m_pkthdr.rcvif; 518 struct llentry *la = NULL; 519 struct rtentry *rt; 520 struct ifaddr *ifa; --- 27 unchanged lines hidden (view full) --- 548 * a protocol length not equal to an IPv4 address. 549 */ 550 if (ah->ar_pln != sizeof(struct in_addr)) { 551 log(LOG_NOTICE, "in_arp: requested protocol length != %zu\n", 552 sizeof(struct in_addr)); 553 return; 554 } 555 |
| 554 if (ETHER_IS_MULTICAST(ar_sha(ah))) { 555 log(LOG_NOTICE, "in_arp: %*D is multicast\n", | 556 if (allow_multicast == 0 && ETHER_IS_MULTICAST(ar_sha(ah))) { 557 log(LOG_NOTICE, "arp: %*D is multicast\n", |
| 556 ifp->if_addrlen, (u_char *)ar_sha(ah), ":"); 557 return; 558 } 559 560 op = ntohs(ah->ar_op); 561 (void)memcpy(&isaddr, ar_spa(ah), sizeof (isaddr)); 562 (void)memcpy(&itaddr, ar_tpa(ah), sizeof (itaddr)); 563 --- 357 unchanged lines hidden --- | 558 ifp->if_addrlen, (u_char *)ar_sha(ah), ":"); 559 return; 560 } 561 562 op = ntohs(ah->ar_op); 563 (void)memcpy(&isaddr, ar_spa(ah), sizeof (isaddr)); 564 (void)memcpy(&itaddr, ar_tpa(ah), sizeof (itaddr)); 565 --- 357 unchanged lines hidden --- |