mld6.c (a61b5cfbbfd54c51c9ba6cc9aa19907911fb3aa9) mld6.c (32af08ecad3fe435ee646791e345526b5bcb7795)
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2009 Bruce Simpson.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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1244 * have been pulled up.
1245 * Assume that userland will want to see the message, even if it
1246 * otherwise fails kernel input validation; do not free it.
1247 * Pullup may however free the mbuf chain m if it fails.
1248 *
1249 * Return IPPROTO_DONE if we freed m. Otherwise, return 0.
1250 */
1251int
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2009 Bruce Simpson.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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1244 * have been pulled up.
1245 * Assume that userland will want to see the message, even if it
1246 * otherwise fails kernel input validation; do not free it.
1247 * Pullup may however free the mbuf chain m if it fails.
1248 *
1249 * Return IPPROTO_DONE if we freed m. Otherwise, return 0.
1250 */
1251int
1252mld_input(struct mbuf *m, int off, int icmp6len)
1252mld_input(struct mbuf **mp, int off, int icmp6len)
1253{
1254 struct ifnet *ifp;
1255 struct ip6_hdr *ip6;
1253{
1254 struct ifnet *ifp;
1255 struct ip6_hdr *ip6;
1256 struct mbuf *m;
1256 struct mld_hdr *mld;
1257 int mldlen;
1258
1257 struct mld_hdr *mld;
1258 int mldlen;
1259
1260 m = *mp;
1259 CTR3(KTR_MLD, "%s: called w/mbuf (%p,%d)", __func__, m, off);
1260
1261 ifp = m->m_pkthdr.rcvif;
1262
1263 /* Pullup to appropriate size. */
1264 m = m_pullup(m, off + sizeof(*mld));
1265 if (m == NULL) {
1266 ICMP6STAT_INC(icp6s_badlen);

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1273 } else {
1274 mldlen = sizeof(struct mld_hdr);
1275 }
1276 m = m_pullup(m, off + mldlen);
1277 if (m == NULL) {
1278 ICMP6STAT_INC(icp6s_badlen);
1279 return (IPPROTO_DONE);
1280 }
1261 CTR3(KTR_MLD, "%s: called w/mbuf (%p,%d)", __func__, m, off);
1262
1263 ifp = m->m_pkthdr.rcvif;
1264
1265 /* Pullup to appropriate size. */
1266 m = m_pullup(m, off + sizeof(*mld));
1267 if (m == NULL) {
1268 ICMP6STAT_INC(icp6s_badlen);

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1275 } else {
1276 mldlen = sizeof(struct mld_hdr);
1277 }
1278 m = m_pullup(m, off + mldlen);
1279 if (m == NULL) {
1280 ICMP6STAT_INC(icp6s_badlen);
1281 return (IPPROTO_DONE);
1282 }
1283 *mp = m;
1281 ip6 = mtod(m, struct ip6_hdr *);
1282 mld = (struct mld_hdr *)(mtod(m, uint8_t *) + off);
1283
1284 /*
1285 * Userland needs to see all of this traffic for implementing
1286 * the endpoint discovery portion of multicast routing.
1287 */
1288 switch (mld->mld_type) {

--- 2046 unchanged lines hidden --- 		1284 ip6 = mtod(m, struct ip6_hdr *);
1285 mld = (struct mld_hdr *)(mtod(m, uint8_t *) + off);
1286
1287 /*
1288 * Userland needs to see all of this traffic for implementing
1289 * the endpoint discovery portion of multicast routing.
1290 */
1291 switch (mld->mld_type) {

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