/*
- * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/malloc.h>
+#include <sys/mcache.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/domain.h>
+#include <sys/kauth.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet6/mld6_var.h>
#include <netinet/in_pcb.h>
#include <netinet6/in6_pcb.h>
+#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <netinet6/in6_ifattach.h>
#include <netinet6/ip6protosw.h>
#if IPSEC
#include <netinet6/ipsec.h>
#include <netkey/key.h>
-
-extern int ipsec_bypass;
#endif
#include <net/net_osdep.h>
-extern struct domain inet6domain;
-extern struct ip6protosw inet6sw[];
+#if NECP
+#include <net/necp.h>
+#endif
+
extern struct ip6protosw *ip6_protox[];
extern uint32_t rip_sendspace;
extern struct inpcbhead ripcb;
extern int icmp6errppslim;
+extern int icmp6rappslim;
static int icmp6errpps_count = 0;
+static int icmp6rapps_count = 0;
static struct timeval icmp6errppslim_last;
+static struct timeval icmp6rappslim_last;
extern int icmp6_nodeinfo;
extern struct inpcbinfo ripcbinfo;
-extern lck_mtx_t *inet6_domain_mutex;
static void icmp6_errcount(struct icmp6errstat *, int, int);
static int icmp6_rip6_input(struct mbuf **, int);
static int icmp6_ratelimit(const struct in6_addr *, const int, const int);
static const char *icmp6_redirect_diag(struct in6_addr *,
struct in6_addr *, struct in6_addr *);
-#ifndef HAVE_PPSRATECHECK
-static int ppsratecheck(struct timeval *, int *, int);
-#endif
static struct mbuf *ni6_input(struct mbuf *, int);
static struct mbuf *ni6_nametodns(const char *, int, int);
static int ni6_dnsmatch(const char *, int, const char *, int);
-static int ni6_addrs(struct icmp6_nodeinfo *,
+static int ni6_addrs(struct icmp6_nodeinfo *,
struct ifnet **, char *);
static int ni6_store_addrs(struct icmp6_nodeinfo *, struct icmp6_nodeinfo *,
struct ifnet *, int);
void
-icmp6_init()
+icmp6_init(struct ip6protosw *pp, struct domain *dp)
{
- mld_init();
+#pragma unused(dp)
+ static int icmp6_initialized = 0;
+
+ /* Also called from ip6_init() without pp */
+ VERIFY(pp == NULL ||
+ (pp->pr_flags & (PR_INITIALIZED|PR_ATTACHED)) == PR_ATTACHED);
+
+ /* This gets called by more than one protocols, so initialize once */
+ if (!icmp6_initialized) {
+ icmp6_initialized = 1;
+ mld_init();
+ }
}
static void
-icmp6_errcount(stat, type, code)
- struct icmp6errstat *stat;
- int type, code;
+icmp6_errcount(struct icmp6errstat *stat, int type, int code)
{
switch (type) {
case ICMP6_DST_UNREACH:
* Generate an error packet of type error in response to bad IP6 packet.
*/
void
-icmp6_error(struct mbuf *m, int type, int code, int param)
+icmp6_error(struct mbuf *m, int type, int code, int param) {
+ icmp6_error_flag(m, type, code, param, ICMP6_ERROR_RST_MRCVIF);
+}
+
+void icmp6_error_flag (struct mbuf *m, int type, int code, int param, int flags)
{
struct ip6_hdr *oip6, *nip6;
struct icmp6_hdr *icmp6;
m_adj(m, ICMPV6_PLD_MAXLEN - m->m_pkthdr.len);
preplen = sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr);
- M_PREPEND(m, preplen, M_DONTWAIT);
+ M_PREPEND(m, preplen, M_DONTWAIT, 1);
if (m && m->m_len < preplen)
m = m_pullup(m, preplen);
if (m == NULL) {
* clear m->m_pkthdr.rcvif for safety, we should have enough scope
* information in ip header (nip6).
*/
- m->m_pkthdr.rcvif = NULL;
+ if (flags & ICMP6_ERROR_RST_MRCVIF) {
+ m->m_pkthdr.rcvif = NULL;
+ }
icmp6stat.icp6s_outhist[type]++;
icmp6_reflect(m, sizeof(struct ip6_hdr)); /* header order: IPv6 - ICMPv6 */
struct icmp6_hdr *icmp6, *nicmp6;
int off = *offp;
int icmp6len = m->m_pkthdr.len - *offp;
- int code, sum, noff;
+ int code, sum, noff, proxy = 0;
ifp = m->m_pkthdr.rcvif;
/* m might change if M_LOOP. So, call mtod after this */
#endif
+ /* Expect 32-bit aligned data pointer on strict-align platforms */
+ MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
+
/*
* Locate icmp6 structure in mbuf, and check
* that not corrupted and of at least minimum length
*/
-
ip6 = mtod(m, struct ip6_hdr *);
if (icmp6len < sizeof(struct icmp6_hdr)) {
icmp6stat.icp6s_tooshort++;
goto freeit;
}
+#ifndef PULLDOWN_TEST
+ icmp6 = (struct icmp6_hdr *)((caddr_t)ip6 + off);
+#else
+ IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off, sizeof(*icmp6));
+ if (icmp6 == NULL) {
+ icmp6stat.icp6s_tooshort++;
+ return IPPROTO_DONE;
+ }
+#endif
+ code = icmp6->icmp6_code;
+
+ /*
+ * Early check for RFC 6980
+ * Drop certain NDP packets if they came in fragmented
+ */
+ switch (icmp6->icmp6_type) {
+ case ND_ROUTER_SOLICIT:
+ case ND_ROUTER_ADVERT:
+ case ND_NEIGHBOR_SOLICIT:
+ case ND_NEIGHBOR_ADVERT:
+ case ND_REDIRECT:
+ if (m->m_pkthdr.pkt_flags & PKTF_REASSEMBLED) {
+ icmp6stat.icp6s_rfc6980_drop++;
+ goto freeit;
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* Apply rate limit before checksum validation. */
+ if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
+ icmp6stat.icp6s_toofreq++;
+ goto freeit;
+ }
+
/*
* Check multicast group membership.
* Note: SSM filters are not applied for ICMPv6 traffic.
in6_multihead_lock_done();
if (inm == NULL) {
- ip6stat.ip6s_notmember++;
- in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard);
- goto freeit;
+ /*
+ * Don't discard if this is a Neighbor Solicitation
+ * that needs to be proxied (see check down below.)
+ */
+ if (!(m->m_pkthdr.pkt_flags & PKTF_PROXY_DST)) {
+ ip6stat.ip6s_notmember++;
+ in6_ifstat_inc(m->m_pkthdr.rcvif,
+ ifs6_in_discard);
+ goto freeit;
+ }
} else {
IN6M_REMREF(inm);
}
/*
* calculate the checksum
*/
-#ifndef PULLDOWN_TEST
- icmp6 = (struct icmp6_hdr *)((caddr_t)ip6 + off);
-#else
- IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off, sizeof(*icmp6));
- if (icmp6 == NULL) {
- icmp6stat.icp6s_tooshort++;
- return IPPROTO_DONE;
- }
-#endif
- code = icmp6->icmp6_code;
-
if ((sum = in6_cksum(m, IPPROTO_ICMPV6, off, icmp6len)) != 0) {
nd6log((LOG_ERR,
"ICMP6 checksum error(%d|%x) %s\n",
goto freeit;
}
-#if defined(NFAITH) && 0 < NFAITH
- if (faithprefix(&ip6->ip6_dst)) {
+ if (m->m_pkthdr.pkt_flags & PKTF_PROXY_DST) {
/*
- * Deliver very specific ICMP6 type only.
- * This is important to deliver TOOBIG. Otherwise PMTUD
- * will not work.
+ * This is the special case of proxying NS (dst is either
+ * solicited-node multicast or unicast); process it locally
+ * but don't deliver it to sockets. It practically lets us
+ * steer the packet to nd6_prproxy_ns_input, where more
+ * specific tests and actions will be taken.
*/
switch (icmp6->icmp6_type) {
- case ICMP6_DST_UNREACH:
- case ICMP6_PACKET_TOO_BIG:
- case ICMP6_TIME_EXCEEDED:
+ case ND_NEIGHBOR_SOLICIT:
+ proxy = 1;
break;
default:
goto freeit;
}
}
-#endif
icmp6stat.icp6s_inhist[icmp6->icmp6_type]++;
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_msg);
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_dstunreach);
switch (code) {
case ICMP6_DST_UNREACH_NOROUTE:
+ case ICMP6_DST_UNREACH_ADDR: /* PRC_HOSTDEAD is a DOS */
code = PRC_UNREACH_NET;
break;
case ICMP6_DST_UNREACH_ADMIN:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_adminprohib);
code = PRC_UNREACH_PROTOCOL; /* is this a good code? */
break;
- case ICMP6_DST_UNREACH_ADDR:
- code = PRC_HOSTDEAD;
- break;
case ICMP6_DST_UNREACH_BEYONDSCOPE:
/* I mean "source address was incorrect." */
code = PRC_PARAMPROB;
goto badcode;
}
goto deliver;
- break;
case ICMP6_PACKET_TOO_BIG:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_pkttoobig);
* intermediate extension headers.
*/
goto deliver;
- break;
case ICMP6_TIME_EXCEEDED:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_timeexceed);
goto badcode;
}
goto deliver;
- break;
case ICMP6_PARAM_PROB:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_paramprob);
goto badcode;
}
goto deliver;
- break;
case ICMP6_ECHO_REQUEST:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_echo);
if (code != 0)
goto badcode;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copy(m, 0, M_COPYALL)) == NULL) {
/* Give up remote */
goto rate_limit_checked;
- break;
}
if ((n->m_flags & M_EXT) != 0
|| n->m_len < off + sizeof(struct icmp6_hdr)) {
/* Give up remote */
m_freem(n0);
goto rate_limit_checked;
- break;
}
MGETHDR(n, M_DONTWAIT, n0->m_type); /* MAC-OK */
if (n && maxlen >= MHLEN) {
/* Give up remote */
m_freem(n0);
goto rate_limit_checked;
- break;
}
M_COPY_PKTHDR(n, n0);
/*
sizeof(*nicmp6));
noff = off;
}
- nicmp6->icmp6_type = ICMP6_ECHO_REPLY;
- nicmp6->icmp6_code = 0;
+ if(nicmp6 == NULL)
+ panic("nicmp6 is NULL in %s, which isn't good!\n", __FUNCTION__);
+ else {
+ nicmp6->icmp6_type = ICMP6_ECHO_REPLY;
+ nicmp6->icmp6_code = 0;
+ }
if (n) {
icmp6stat.icp6s_reflect++;
icmp6stat.icp6s_outhist[ICMP6_ECHO_REPLY]++;
icmp6_reflect(n, noff);
}
goto rate_limit_checked;
- break;
case ICMP6_ECHO_REPLY:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_echoreply);
else
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_mldreport);
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
/* give up local */
if (mld_input(m, off, icmp6len) == IPPROTO_DONE)
m_freem(n);
/* m stays. */
goto rate_limit_checked;
- break;
case MLD_LISTENER_DONE:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_mlddone);
if (!icmp6_nodeinfo)
break;
//### LD 10/20 Check fbsd differences here. Not sure we're more advanced or not.
- /* By RFC 4620 refuse to answer queries from global scope addresses */
+ /* By RFC 4620 refuse to answer queries from global scope addresses */
if ((icmp6_nodeinfo & 8) != 8 && in6_addrscope(&ip6->ip6_src) == IPV6_ADDR_SCOPE_GLOBAL)
break;
IP6_EXTHDR_CHECK(m, off, sizeof(struct icmp6_nodeinfo),
return IPPROTO_DONE);
#endif
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
n = m_copy(m, 0, M_COPYALL);
if (n)
icmp6_reflect(n, noff);
}
goto rate_limit_checked;
- break;
case ICMP6_WRUREPLY:
if (code != 0)
if (icmp6len < sizeof(struct nd_router_solicit))
goto badlen;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
/* give up local */
nd6_rs_input(m, off, icmp6len);
nd6_rs_input(n, off, icmp6len);
/* m stays. */
goto rate_limit_checked;
- break;
case ND_ROUTER_ADVERT:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_routeradvert);
if (icmp6len < sizeof(struct nd_router_advert))
goto badlen;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
/* give up local */
nd6_ra_input(m, off, icmp6len);
nd6_ra_input(n, off, icmp6len);
/* m stays. */
goto rate_limit_checked;
- break;
case ND_NEIGHBOR_SOLICIT:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_neighborsolicit);
if (icmp6len < sizeof(struct nd_neighbor_solicit))
goto badlen;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
- if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
+ if (proxy ||
+ ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL)) {
/* give up local */
nd6_ns_input(m, off, icmp6len);
m = NULL;
nd6_ns_input(n, off, icmp6len);
/* m stays. */
goto rate_limit_checked;
- break;
case ND_NEIGHBOR_ADVERT:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_neighboradvert);
if (icmp6len < sizeof(struct nd_neighbor_advert))
goto badlen;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
/* give up local */
nd6_na_input(m, off, icmp6len);
nd6_na_input(n, off, icmp6len);
/* m stays. */
goto rate_limit_checked;
- break;
case ND_REDIRECT:
icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_redirect);
if (icmp6len < sizeof(struct nd_redirect))
goto badlen;
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if ((n = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
/* give up local */
icmp6_redirect_input(m, off);
icmp6_redirect_input(n, off);
/* m stays. */
goto rate_limit_checked;
- break;
case ICMP6_ROUTER_RENUMBERING:
if (code != ICMP6_ROUTER_RENUMBERING_COMMAND &&
break;
default:
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
nd6log((LOG_DEBUG,
"icmp6_input: unknown type %d(src=%s, dst=%s, ifid=%d)\n",
icmp6->icmp6_type, ip6_sprintf(&ip6->ip6_src),
} else {
/* ICMPv6 informational: MUST not deliver */
goto rate_limit_checked;
- break;
}
deliver:
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
-
if (icmp6_notify_error(m, off, icmp6len, code)) {
/* In this case, m should've been freed. */
return(IPPROTO_DONE);
break;
}
- if (icmp6_ratelimit(&ip6->ip6_dst, icmp6->icmp6_type, code)) {
- icmp6stat.icp6s_toofreq++;
- goto freeit;
- }
rate_limit_checked:
- /* deliver the packet to appropriate sockets */
icmp6_rip6_input(&m, *offp);
-
return IPPROTO_DONE;
- freeit:
+freeit:
m_freem(m);
return IPPROTO_DONE;
}
static int
-icmp6_notify_error(m, off, icmp6len, code)
- struct mbuf *m;
- int off, icmp6len, code;
+icmp6_notify_error(struct mbuf *m, int off, int icmp6len, int code)
{
struct icmp6_hdr *icmp6;
struct ip6_hdr *eip6;
/* Detect the upper level protocol */
{
- void (*ctlfunc)(int, struct sockaddr *, void *);
+ void (*ctlfunc)(int, struct sockaddr *, void *, struct ifnet *);
u_int8_t nxt = eip6->ip6_nxt;
int eoff = off + sizeof(struct icmp6_hdr) +
sizeof(struct ip6_hdr);
/* just ignore a bogus header */
if ((rth0->ip6r0_len % 2) == 0 &&
(hops = rth0->ip6r0_len/2))
- finaldst = (struct in6_addr *)(rth0 + 1) + (hops - 1);
+ finaldst = (struct in6_addr *)(void *)(rth0 + 1) + (hops - 1);
}
eoff += rthlen;
nxt = rth->ip6r_nxt;
icmp6_mtudisc_update(&ip6cp, 1); /*XXX*/
}
- ctlfunc = (void (*)(int, struct sockaddr *, void *))
- (ip6_protox[nxt]->pr_ctlinput);
+ ctlfunc = ip6_protox[nxt]->pr_ctlinput;
if (ctlfunc) {
+ LCK_MTX_ASSERT(inet6_domain_mutex, LCK_MTX_ASSERT_OWNED);
+
+ lck_mtx_unlock(inet6_domain_mutex);
+
(void) (*ctlfunc)(code, (struct sockaddr *)&icmp6dst,
- &ip6cp);
+ &ip6cp, m->m_pkthdr.rcvif);
+
+ lck_mtx_lock(inet6_domain_mutex);
}
}
return(0);
}
void
-icmp6_mtudisc_update(ip6cp, validated)
- struct ip6ctlparam *ip6cp;
- int validated;
+icmp6_mtudisc_update(struct ip6ctlparam *ip6cp, int validated)
{
struct in6_addr *dst = ip6cp->ip6c_finaldst;
struct icmp6_hdr *icmp6 = ip6cp->ip6c_icmp6;
htons(m->m_pkthdr.rcvif->if_index);
}
/* sin6.sin6_scope_id = XXX: should be set if DST is a scoped addr */
+ /*
+ * XXX On a side note, for asymmetric data-path
+ * the lookup on receive interace is probably not
+ * what we want to do.
+ * That requires looking at the cached route for the
+ * protocol control block.
+ */
rt = rtalloc1_scoped((struct sockaddr *)&sin6, 0,
RTF_CLONING | RTF_PRCLONING, m->m_pkthdr.rcvif->if_index);
if (rt != NULL) {
*/
#define hostnamelen strlen(hostname)
static struct mbuf *
-ni6_input(m, off)
- struct mbuf *m;
- int off;
+ni6_input(struct mbuf *m, int off)
{
struct icmp6_nodeinfo *ni6, *nni6;
struct mbuf *n = NULL;
goto bad;
/* else it's a link-local multicast, fine */
} else { /* unicast or anycast */
- struct in6_ifaddr *ia6;
+ uint32_t ia6_flags;
- if ((ia6 = ip6_getdstifaddr(m)) == NULL)
+ if (ip6_getdstifaddr_info(m, NULL, &ia6_flags) != 0)
goto bad; /* XXX impossible */
- IFA_LOCK(&ia6->ia_ifa);
- if ((ia6->ia6_flags & IN6_IFF_TEMPORARY) &&
+ if ((ia6_flags & IN6_IFF_TEMPORARY) &&
!(icmp6_nodeinfo & ICMP6_NODEINFO_TMPADDROK)) {
nd6log((LOG_DEBUG, "ni6_input: ignore node info to "
"a temporary address in %s:%d",
- __FILE__, __LINE__));
- IFA_UNLOCK(&ia6->ia_ifa);
- IFA_REMREF(&ia6->ia_ifa);
+ __func__, __LINE__));
goto bad;
}
- IFA_UNLOCK(&ia6->ia_ifa);
- IFA_REMREF(&ia6->ia_ifa);
}
/* validate query Subject field. */
* treated as truncated name (two \0 at the end). this is a wild guess.
*/
static struct mbuf *
-ni6_nametodns(name, namelen, old)
- const char *name;
- int namelen;
- int old; /* return pascal string if non-zero */
+ni6_nametodns(
+ const char *name,
+ int namelen,
+ int old) /* return pascal string if non-zero */
{
struct mbuf *m;
char *cp, *ep;
* XXX upper/lowercase match (see RFC2065)
*/
static int
-ni6_dnsmatch(a, alen, b, blen)
- const char *a;
- int alen;
- const char *b;
- int blen;
+ni6_dnsmatch(const char *a, int alen, const char *b, int blen)
{
const char *a0, *b0;
int l;
* calculate the number of addresses to be returned in the node info reply.
*/
static int
-ni6_addrs(ni6, ifpp, subj)
- struct icmp6_nodeinfo *ni6;
- struct ifnet **ifpp;
- char *subj;
+ni6_addrs(struct icmp6_nodeinfo *ni6, struct ifnet **ifpp, char *subj)
{
struct ifnet *ifp;
struct in6_ifaddr *ifa6;
case ICMP6_NI_SUBJ_IPV6:
if (subj == NULL) /* must be impossible... */
return(0);
- subj_ip6 = (struct sockaddr_in6 *)subj;
+ subj_ip6 = (struct sockaddr_in6 *)(void *)subj;
break;
default:
/*
}
static int
-ni6_store_addrs(ni6, nni6, ifp0, resid)
- struct icmp6_nodeinfo *ni6, *nni6;
- struct ifnet *ifp0;
- int resid;
+ni6_store_addrs(struct icmp6_nodeinfo *ni6, struct icmp6_nodeinfo *nni6,
+ struct ifnet *ifp0, int resid)
{
struct ifnet *ifp = ifp0;
struct in6_ifaddr *ifa6;
u_char *cp = (u_char *)(nni6 + 1);
int niflags = ni6->ni_flags;
u_int32_t ltime;
- struct timeval timenow;
-
- getmicrotime(&timenow);
+ uint64_t now = net_uptime();
if (ifp0 == NULL && !(niflags & NI_NODEADDR_FLAG_ALL))
return (0); /* needless to copy */
ifnet_lock_shared(ifp);
for (ifa = ifp->if_addrlist.tqh_first; ifa;
ifa = ifa->ifa_list.tqe_next) {
+ struct in6_addrlifetime_i *lt;
+
IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
* address configuration by DHCPv6, so the former
* case can't happen.
*/
- if (ifa6->ia6_lifetime.ia6t_expire == 0 &&
- (ifa6->ia6_flags & IN6_IFF_TEMPORARY) == 0)
+ lt = &ifa6->ia6_lifetime;
+ if (lt->ia6ti_expire == 0) {
ltime = ND6_INFINITE_LIFETIME;
- else {
- if (ifa6->ia6_lifetime.ia6t_expire >
- timenow.tv_sec)
- ltime = htonl(ifa6->ia6_lifetime.ia6t_expire - timenow.tv_sec);
+ } else {
+ if (lt->ia6ti_expire > now)
+ ltime = htonl(lt->ia6ti_expire - now);
else
ltime = 0;
}
sizeof(struct in6_addr));
/* XXX: KAME link-local hack; remove ifindex */
if (IN6_IS_ADDR_LINKLOCAL(&ifa6->ia_addr.sin6_addr))
- ((struct in6_addr *)cp)->s6_addr16[1] = 0;
+ ((struct in6_addr *)(void *)cp)->s6_addr16[1] = 0;
cp += sizeof(struct in6_addr);
resid -= (sizeof(struct in6_addr) + sizeof(u_int32_t));
* XXX almost dup'ed code with rip6_input.
*/
static int
-icmp6_rip6_input(mp, off)
- struct mbuf **mp;
- int off;
+icmp6_rip6_input(struct mbuf **mp, int off)
{
struct mbuf *m = *mp;
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
struct icmp6_hdr *icmp6;
struct mbuf *opts = NULL;
int ret = 0;
+ struct ifnet *ifp = m->m_pkthdr.rcvif;
#ifndef PULLDOWN_TEST
/* this is assumed to be safe. */
rip6src.sin6_family = AF_INET6;
rip6src.sin6_len = sizeof(struct sockaddr_in6);
rip6src.sin6_addr = ip6->ip6_src;
- if (sa6_recoverscope(&rip6src))
+ if (sa6_recoverscope(&rip6src, TRUE))
return (IPPROTO_DONE);
-
- lck_rw_lock_shared(ripcbinfo.mtx);
+
+ lck_rw_lock_shared(ripcbinfo.ipi_lock);
LIST_FOREACH(in6p, &ripcb, inp_list)
{
if ((in6p->inp_vflag & INP_IPV6) == 0)
&& ICMP6_FILTER_WILLBLOCK(icmp6->icmp6_type,
in6p->in6p_icmp6filt))
continue;
+
+ if (inp_restricted_recv(in6p, ifp))
+ continue;
+
if (last) {
struct mbuf *n;
if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
- if ((last->in6p_flags & IN6P_CONTROLOPTS) != 0 ||
+ if ((last->in6p_flags & INP_CONTROLOPTS) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
ret = ip6_savecontrol(last, n, &opts);
} else {
goto error;
}
- lck_rw_done(ripcbinfo.mtx);
+ lck_rw_done(ripcbinfo.ipi_lock);
return IPPROTO_DONE;
error:
- lck_rw_done(ripcbinfo.mtx);
+ lck_rw_done(ripcbinfo.ipi_lock);
m_freem(m);
m_freem(opts);
ip6stat.ip6s_delivered--;
- return IPPROTO_DONE;
-
+ return IPPROTO_DONE;
}
/*
* OFF points to the icmp6 header, counted from the top of the mbuf.
*/
void
-icmp6_reflect(m, off)
- struct mbuf *m;
- size_t off;
+icmp6_reflect(struct mbuf *m, size_t off)
{
+ struct mbuf *m_ip6hdr = m;
struct ip6_hdr *ip6;
struct icmp6_hdr *icmp6;
struct in6_ifaddr *ia;
int type, code;
struct ifnet *outif = NULL;
struct sockaddr_in6 sa6_src, sa6_dst;
+ struct nd_ifinfo *ndi = NULL;
u_int32_t oflow;
- struct ip6_out_args ip6oa = { IFSCOPE_NONE, 0 };
+ struct ip6_out_args ip6oa = { IFSCOPE_NONE, { 0 },
+ IP6OAF_SELECT_SRCIF | IP6OAF_BOUND_SRCADDR |
+ IP6OAF_INTCOPROC_ALLOWED | IP6OAF_AWDL_UNRESTRICTED, 0,
+ SO_TC_UNSPEC, _NET_SERVICE_TYPE_UNSPEC };
- if ((m->m_flags & M_PKTHDR) && m->m_pkthdr.rcvif != NULL)
+ if (!(m->m_pkthdr.pkt_flags & PKTF_LOOP) && m->m_pkthdr.rcvif != NULL) {
ip6oa.ip6oa_boundif = m->m_pkthdr.rcvif->if_index;
+ ip6oa.ip6oa_flags |= IP6OAF_BOUND_IF;
+ }
/* too short to reflect */
if (off < sizeof(struct ip6_hdr)) {
nd6log((LOG_DEBUG,
"sanity fail: off=%lx, sizeof(ip6)=%lx in %s:%d\n",
(u_int32_t)off, (u_int32_t)sizeof(struct ip6_hdr),
- __FILE__, __LINE__));
+ __func__, __LINE__));
goto bad;
}
* If there are extra headers between IPv6 and ICMPv6, strip
* off that header first.
*/
-#if DIAGNOSTIC
- if (sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr) > MHLEN)
- panic("assumption failed in icmp6_reflect");
-#endif
if (off > sizeof(struct ip6_hdr)) {
size_t l;
struct ip6_hdr nip6;
m_adj(m, l);
l = sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr);
if (m->m_len < l) {
- if ((m = m_pullup(m, l)) == NULL)
+ if ((m_ip6hdr = m_pulldown(m, 0, l, NULL)) == NULL)
return;
}
bcopy((caddr_t)&nip6, mtod(m, caddr_t), sizeof(nip6));
size_t l;
l = sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr);
if (m->m_len < l) {
- if ((m = m_pullup(m, l)) == NULL)
+ if ((m_ip6hdr = m_pulldown(m, 0, l, NULL)) == NULL)
return;
}
}
plen = m->m_pkthdr.len - sizeof(struct ip6_hdr);
- ip6 = mtod(m, struct ip6_hdr *);
+ ip6 = mtod(m_ip6hdr, struct ip6_hdr *);
ip6->ip6_nxt = IPPROTO_ICMPV6;
icmp6 = (struct icmp6_hdr *)(ip6 + 1);
type = icmp6->icmp6_type; /* keep type for statistics */
IFA_UNLOCK(&ia->ia_ifa);
}
lck_rw_done(&in6_ifaddr_rwlock);
- if (ia == NULL && IN6_IS_ADDR_LINKLOCAL(&t) && (m->m_flags & M_LOOP)) {
+ if (ia == NULL && IN6_IS_ADDR_LINKLOCAL(&t) &&
+ ((m->m_flags & M_LOOP) || (m->m_pkthdr.pkt_flags & PKTF_LOOP))) {
/*
* This is the case if the dst is our link-local address
- * and the sender is also ourselves.
+ * and the sender is also ourselves. Here we test for both
+ * M_LOOP and PKTF_LOOP, since the former may have been set
+ * in ip6_output() and that we get here as part of callling
+ * ip6_process_hopopts(). See comments in <sys/mbuf.h>
*/
src = &t;
}
sin6.sin6_addr = ip6->ip6_dst; /* zone ID should be embedded */
bzero(&ro, sizeof(ro));
+ /*
+ * in6_selectsrc() might return outif with its reference held
+ * even in the error case, so we always need to release it
+ * if non-NULL.
+ */
src = in6_selectsrc(&sin6, NULL, NULL, &ro, &outif,
&src_storage, ip6oa.ip6oa_boundif, &e);
- if (ro.ro_rt)
- rtfree(ro.ro_rt); /* XXX: we could use this */
+ ROUTE_RELEASE(&ro);
if (src == NULL) {
nd6log((LOG_DEBUG,
"icmp6_reflect: source can't be determined: "
ip6->ip6_flow |= (oflow & htonl(0x0ff00000));
}
ip6->ip6_nxt = IPPROTO_ICMPV6;
- lck_rw_lock_shared(nd_if_rwlock);
- if (outif)
- ip6->ip6_hlim = ND_IFINFO(outif)->chlim;
- if (m->m_pkthdr.rcvif && m->m_pkthdr.rcvif->if_index < nd_ifinfo_indexlim) {
+ if (outif != NULL && (ndi = ND_IFINFO(outif)) != NULL &&
+ ndi->initialized) {
+ lck_mtx_lock(&ndi->lock);
+ ip6->ip6_hlim = ndi->chlim;
+ lck_mtx_unlock(&ndi->lock);
+ }
+ if (m->m_pkthdr.rcvif != NULL &&
+ (ndi = ND_IFINFO(m->m_pkthdr.rcvif)) != NULL &&
+ ndi->initialized) {
/* XXX: This may not be the outgoing interface */
- ip6->ip6_hlim = nd_ifinfo[m->m_pkthdr.rcvif->if_index].chlim;
+ lck_mtx_lock(&ndi->lock);
+ ip6->ip6_hlim = ndi->chlim;
+ lck_mtx_unlock(&ndi->lock);
} else {
ip6->ip6_hlim = ip6_defhlim;
}
- lck_rw_done(nd_if_rwlock);
/* Use the same traffic class as in the request to match IPv4 */
icmp6->icmp6_cksum = 0;
icmp6->icmp6_cksum = in6_cksum(m, IPPROTO_ICMPV6,
- sizeof(struct ip6_hdr), plen);
+ sizeof(struct ip6_hdr), plen);
/*
* XXX option handling
*/
-
m->m_flags &= ~(M_BCAST|M_MCAST);
-#if IPSEC
- /* Don't lookup socket */
- if (ipsec_bypass == 0)
- (void)ipsec_setsocket(m, NULL);
-#endif /*IPSEC*/
if (outif != NULL) {
ifnet_release(outif);
outif = NULL;
}
+
+ m->m_pkthdr.csum_data = 0;
+ m->m_pkthdr.csum_flags = 0;
ip6_output(m, NULL, NULL, IPV6_OUTARGS, NULL, &outif, &ip6oa);
if (outif != NULL) {
icmp6_ifoutstat_inc(outif, type, code);
}
static const char *
-icmp6_redirect_diag(src6, dst6, tgt6)
- struct in6_addr *src6;
- struct in6_addr *dst6;
- struct in6_addr *tgt6;
+icmp6_redirect_diag(struct in6_addr *src6,
+ struct in6_addr *dst6,
+ struct in6_addr *tgt6)
{
static char buf[1024];
snprintf(buf, sizeof(buf), "(src=%s dst=%s tgt=%s)",
}
void
-icmp6_redirect_input(m, off)
- struct mbuf *m;
- int off;
+icmp6_redirect_input(struct mbuf *m, int off)
{
struct ifnet *ifp = m->m_pkthdr.rcvif;
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
if (!m || !ifp)
return;
- /* XXX if we are router, we don't update route by icmp6 redirect */
- if (ip6_forwarding)
+ /*
+ * If we are an advertising router on this interface,
+ * don't update route by icmp6 redirect.
+ */
+ if (ifp->if_eflags & IFEF_IPV6_ROUTER)
goto freeit;
if (!icmp6_rediraccept)
goto freeit;
goto bad;
}
- gw6 = &(((struct sockaddr_in6 *)rt->rt_gateway)->sin6_addr);
+ gw6 = &(((struct sockaddr_in6 *)(void *)
+ rt->rt_gateway)->sin6_addr);
if (bcmp(&src6, gw6, sizeof(struct in6_addr)) != 0) {
nd6log((LOG_ERR,
"ICMP6 redirect rejected; "
sdst.sin6_family = AF_INET6;
sdst.sin6_len = sizeof(struct sockaddr_in6);
bcopy(&reddst6, &sdst.sin6_addr, sizeof(struct in6_addr));
-
- /*
- * Radar 6843900
- * Release the IPv6 domain lock because we are going to take domain_proto_mtx
- * and could otherwise cause a deadlock with other threads taking these locks
- * in the reverse order -- e.g. frag6_slowtimo() from pfslowtimo()
- */
- lck_mtx_unlock(inet6_domain_mutex);
+
pfctlinput(PRC_REDIRECT_HOST, (struct sockaddr *)&sdst);
- lck_mtx_lock(inet6_domain_mutex);
#if IPSEC
key_sa_routechange((struct sockaddr *)&sdst);
#endif
}
void
-icmp6_redirect_output(m0, rt)
- struct mbuf *m0;
- struct rtentry *rt;
+icmp6_redirect_output(struct mbuf *m0, struct rtentry *rt)
{
struct ifnet *ifp; /* my outgoing interface */
struct in6_addr ifp_ll6;
u_char *p;
struct ifnet *outif = NULL;
struct sockaddr_in6 src_sa;
- struct ip6_out_args ip6oa = { IFSCOPE_NONE, 0 };
+ struct ip6_out_args ip6oa = { IFSCOPE_NONE, { 0 },
+ IP6OAF_SELECT_SRCIF | IP6OAF_BOUND_SRCADDR, 0,
+ SO_TC_UNSPEC, _NET_SERVICE_TYPE_UNSPEC };
icmp6_errcount(&icmp6stat.icp6s_outerrhist, ND_REDIRECT, 0);
if (!m0 || !rt || !(rt->rt_flags & RTF_UP) || !(ifp = rt->rt_ifp))
goto fail;
- /* if we are not router, we don't send icmp6 redirect */
- if (!ip6_forwarding || ip6_accept_rtadv || (ifp->if_eflags & IFEF_ACCEPT_RTADVD))
+ /*
+ * If we are not a router to begin with, or not an advertising
+ * router on this interface, don't send icmp6 redirect.
+ */
+ if (!ip6_forwarding || !(ifp->if_eflags & IFEF_IPV6_ROUTER))
goto fail;
/*
/* get ip6 linklocal address for the router. */
if (rt->rt_gateway && (rt->rt_flags & RTF_GATEWAY)) {
struct sockaddr_in6 *sin6;
- sin6 = (struct sockaddr_in6 *)rt->rt_gateway;
+ sin6 = (struct sockaddr_in6 *)(void *)rt->rt_gateway;
router_ll6 = &sin6->sin6_addr;
if (!IN6_IS_ADDR_LINKLOCAL(router_ll6))
router_ll6 = (struct in6_addr *)NULL;
if (!(rt_router->rt_flags & RTF_GATEWAY) &&
(rt_router->rt_flags & RTF_LLINFO) &&
(rt_router->rt_gateway->sa_family == AF_LINK) &&
- (sdl = (struct sockaddr_dl *)rt_router->rt_gateway) &&
- sdl->sdl_alen) {
+ (sdl = (struct sockaddr_dl *)(void *)
+ rt_router->rt_gateway) && sdl->sdl_alen) {
nd_opt = (struct nd_opt_hdr *)p;
nd_opt->nd_opt_type = ND_OPT_TARGET_LINKADDR;
nd_opt->nd_opt_len = len >> 3;
}
RT_REMREF_LOCKED(rt_router);
RT_UNLOCK(rt_router);
- }
+ }
nolladdropt:;
* and truncates if not.
*/
if (m0->m_next || m0->m_pkthdr.len != m0->m_len)
- panic("assumption failed in %s:%d\n", __FILE__, __LINE__);
+ panic("assumption failed in %s:%d\n", __func__, __LINE__);
if (len - sizeof(*nd_opt_rh) < m0->m_pkthdr.len) {
/* not enough room, truncate */
= in6_cksum(m, IPPROTO_ICMPV6, sizeof(*ip6), ntohs(ip6->ip6_plen));
/* send the packet to outside... */
-#if IPSEC
- /* Don't lookup socket */
- if (ipsec_bypass == 0)
- (void)ipsec_setsocket(m, NULL);
-#endif /*IPSEC*/
-
ip6oa.ip6oa_boundif = ifp->if_index;
+ ip6oa.ip6oa_flags |= IP6OAF_BOUND_IF;
ip6_output(m, NULL, NULL, IPV6_OUTARGS, NULL, &outif, &ip6oa);
if (outif) {
* ICMPv6 socket option processing.
*/
int
-icmp6_ctloutput(so, sopt)
- struct socket *so;
- struct sockopt *sopt;
+icmp6_ctloutput(struct socket *so, struct sockopt *sopt)
{
int error = 0;
int optlen;
}
if (optlen == 0) {
- /* According to RFC 3542, an installed filter can be
+ /* According to RFC 3542, an installed filter can be
* cleared by issuing a setsockopt for ICMP6_FILTER
* with a zero length.
*/
int
icmp6_dgram_ctloutput(struct socket *so, struct sockopt *sopt)
{
- if (so->so_uid == 0)
+ if (kauth_cred_issuser(so->so_cred))
return icmp6_ctloutput(so, sopt);
if (sopt->sopt_level == IPPROTO_ICMPV6) {
return EPERM;
}
}
-
+
if (sopt->sopt_level != IPPROTO_IPV6)
return EINVAL;
-
+
switch (sopt->sopt_name) {
case IPV6_UNICAST_HOPS:
case IPV6_CHECKSUM:
- case IPV6_FAITH:
case IPV6_V6ONLY:
case IPV6_USE_MIN_MTU:
case IPV6_RECVRTHDR:
case IPV6_NO_IFT_CELLULAR:
return ip6_ctloutput(so, sopt);
-
+
default:
return EPERM;
-
-
}
}
int error = 0;
struct inpcb *inp = sotoinpcb(so);
struct sockaddr_in6 tmp;
- struct sockaddr_in6 *dst = (struct sockaddr_in6 *)nam;
+ struct sockaddr_in6 *dst = (struct sockaddr_in6 *)(void *)nam;
struct icmp6_hdr *icmp6;
- if (so->so_uid == 0)
- return rip6_output(m, so, (struct sockaddr_in6 *) nam, control, 0);
+ if (inp == NULL
+#if NECP
+ || (necp_socket_should_use_flow_divert(inp))
+#endif /* NECP */
+ ) {
+ error = (inp == NULL ? EINVAL : EPROTOTYPE);
+ goto bad;
+ }
+
+ if (kauth_cred_issuser(so->so_cred))
+ return (rip6_output(m, so, SIN6(nam), control, 0));
/* always copy sockaddr to avoid overwrites */
if (so->so_state & SS_ISCONNECTED) {
- if (nam) {
- m_freem(m);
- return EISCONN;
+ if (nam != NULL) {
+ error = EISCONN;
+ goto bad;
}
/* XXX */
bzero(&tmp, sizeof(tmp));
dst = &tmp;
} else {
if (nam == NULL) {
- m_freem(m);
- return ENOTCONN;
+ error = ENOTCONN;
+ goto bad;
}
- tmp = *(struct sockaddr_in6 *)nam;
+ tmp = *(struct sockaddr_in6 *)(void *)nam;
dst = &tmp;
}
/*
* For an ICMPv6 packet, we should know its type and code
*/
- if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
+ if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
if (m->m_len < sizeof(struct icmp6_hdr) &&
(m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
error = ENOBUFS;
goto bad;
}
icmp6 = mtod(m, struct icmp6_hdr *);
-
+
/*
* Allow only to send echo request and node information request
* See RFC 2463 for Echo Request Message format
*/
- if ((icmp6->icmp6_type == ICMP6_ECHO_REQUEST && icmp6->icmp6_code == 0) ||
- (icmp6->icmp6_type == ICMP6_NI_QUERY &&
- (icmp6->icmp6_code == ICMP6_NI_SUBJ_IPV6 ||
- icmp6->icmp6_code == ICMP6_NI_SUBJ_FQDN))) {
+ if ((icmp6->icmp6_type == ICMP6_ECHO_REQUEST &&
+ icmp6->icmp6_code == 0) ||
+ (icmp6->icmp6_type == ICMP6_NI_QUERY &&
+ (icmp6->icmp6_code == ICMP6_NI_SUBJ_IPV6 ||
+ icmp6->icmp6_code == ICMP6_NI_SUBJ_FQDN))) {
/* Good */
;
} else {
#if ENABLE_DEFAULT_SCOPE
if (dst->sin6_scope_id == 0) { /* not change if specified */
- dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
+ dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
}
#endif
- return rip6_output(m, so, (struct sockaddr_in6 *) nam, control, 0);
+ return (rip6_output(m, so, dst, control, 0));
bad:
- m_freem(m);
- return error;
+ VERIFY(error != 0);
+
+ if (m != NULL)
+ m_freem(m);
+ if (control != NULL)
+ m_freem(control);
+
+ return (error);
}
/* Like rip6_attach but without root privilege enforcement */
inp = sotoinpcb(so);
if (inp)
panic("icmp6_dgram_attach");
-
+
if (proto != IPPROTO_ICMPV6)
return EINVAL;
-
+
error = soreserve(so, rip_sendspace, rip_recvspace);
if (error)
return error;
}
-
-#ifndef HAVE_PPSRATECHECK
-#ifndef timersub
-#define timersub(tvp, uvp, vvp) \
- do { \
- (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
- (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
- if ((vvp)->tv_usec < 0) { \
- (vvp)->tv_sec--; \
- (vvp)->tv_usec += 1000000; \
- } \
- } while (0)
-#endif
-
-/*
- * ppsratecheck(): packets (or events) per second limitation.
- */
-static int
-ppsratecheck(lasttime, curpps, maxpps)
- struct timeval *lasttime;
- int *curpps;
- int maxpps; /* maximum pps allowed */
-{
- struct timeval tv, delta;
- int rv;
-
- microtime(&tv);
-
- timersub(&tv, lasttime, &delta);
-
- /*
- * Check for 0,0 so that the message will be seen at least once.
- * If more than one second has passed since the last update of
- * lasttime, reset the counter.
- *
- * we do increment *curpps even in *curpps < maxpps case, as some may
- * try to use *curpps for stat purposes as well.
- */
- if ((lasttime->tv_sec == 0 && lasttime->tv_usec == 0) ||
- delta.tv_sec >= 1) {
- *lasttime = tv;
- *curpps = 0;
- rv = 1;
- } else if (maxpps < 0)
- rv = 1;
- else if (*curpps < maxpps)
- rv = 1;
- else
- rv = 0;
-
-#if 1 /* DIAGNOSTIC? */
- /* be careful about wrap-around */
- if (*curpps + 1 > 0)
- *curpps = *curpps + 1;
-#else
- /*
- * assume that there's not too many calls to this function.
- * not sure if the assumption holds, as it depends on *caller's*
- * behavior, not the behavior of this function.
- * IMHO it is wrong to make assumption on the caller's behavior,
- * so the above #if is #if 1, not #ifdef DIAGNOSTIC.
- */
- *curpps = *curpps + 1;
-#endif
-
- return (rv);
-}
-#endif
-
/*
* Perform rate limit check.
* Returns 0 if it is okay to send the icmp6 packet.
* Returns 1 if the router SHOULD NOT send this icmp6 packet due to rate
* limitation.
*
- * XXX per-destination/type check necessary?
+ * XXX per-destination check necessary?
*/
static int
icmp6_ratelimit(
__unused const struct in6_addr *dst, /* not used at this moment */
- __unused const int type, /* not used at this moment */
- __unused const int code) /* not used at this moment */
+ const int type,
+ __unused const int code)
{
int ret;
ret = 0; /* okay to send */
/* PPS limit */
- if (!ppsratecheck(&icmp6errppslim_last, &icmp6errpps_count,
+ if (type == ND_ROUTER_ADVERT) {
+ if (!ppsratecheck(&icmp6rappslim_last, &icmp6rapps_count,
+ icmp6rappslim))
+ ret++;
+ } else if (!ppsratecheck(&icmp6errppslim_last, &icmp6errpps_count,
icmp6errppslim)) {
/* The packet is subject to rate limit */
ret++;
projects / apple / xnu.git / blobdiff