/*
- * Copyright (c) 2003-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
static void ip6_init_delayed(void);
static int ip6_hopopts_input(u_int32_t *, u_int32_t *, struct mbuf **, int *);
-#if PULLDOWN_TEST
-static struct mbuf *ip6_pullexthdr(struct mbuf *, size_t, int);
-#endif
#if NSTF
extern void stfattach(void);
in6_ifstat_inc_na(inifp, ifs6_in_receive);
ip6stat.ip6s_total++;
-#ifndef PULLDOWN_TEST
/*
* L2 bridge code and some other code can return mbuf chain
* that does not conform to KAME requirement. too bad.
m = n;
}
IP6_EXTHDR_CHECK(m, 0, sizeof (struct ip6_hdr), { goto done; });
-#endif
if (m->m_len < sizeof (struct ip6_hdr)) {
if ((m = m_pullup(m, sizeof (struct ip6_hdr))) == 0) {
ip6stat.ip6s_badscope++;
goto bad;
}
- if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst) &&
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst) &&
ip6->ip6_dst.s6_addr16[1]) {
ip6stat.ip6s_badscope++;
goto bad;
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src))
ip6->ip6_src.s6_addr16[1] =
htons(m->m_pkthdr.src_ifindex);
- if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst))
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst))
ip6->ip6_dst.s6_addr16[1] =
htons(m->m_pkthdr.dst_ifindex);
} else {
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src))
ip6->ip6_src.s6_addr16[1] = htons(inifp->if_index);
- if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst))
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst))
ip6->ip6_dst.s6_addr16[1] = htons(inifp->if_index);
}
if (in6m != NULL) {
IN6M_REMREF(in6m);
ours = 1;
- } else if (!nd6_prproxy
-#if MROUTING
- && !ip6_mrouter
-#endif /* MROUTING */
- ) {
+ } else if (!nd6_prproxy) {
ip6stat.ip6s_notmember++;
ip6stat.ip6s_cantforward++;
in6_ifstat_inc(inifp, ifs6_in_discard);
(caddr_t)&ip6->ip6_plen - (caddr_t)ip6);
goto done;
}
-#ifndef PULLDOWN_TEST
/* ip6_hopopts_input() ensures that mbuf is contiguous */
hbh = (struct ip6_hbh *)(ip6 + 1);
-#else
- IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m,
- sizeof (struct ip6_hdr), sizeof (struct ip6_hbh));
- if (hbh == NULL) {
- ip6stat.ip6s_tooshort++;
- goto done;
- }
-#endif
nxt = hbh->ip6h_nxt;
/*
* Forward if desirable.
*/
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
- /*
- * If we are acting as a multicast router, all
- * incoming multicast packets are passed to the
- * kernel-level multicast forwarding function.
- * The packet is returned (relatively) intact; if
- * ip6_mforward() returns a non-zero value, the packet
- * must be discarded, else it may be accepted below.
- */
-#if MROUTING
- if (ip6_mrouter && ip6_mforward(ip6, inifp, m)) {
- ip6stat.ip6s_cantforward++;
- goto bad;
- }
-#endif /* MROUTING */
if (!ours && nd6_prproxy) {
/*
* If this isn't for us, this might be a Neighbor
u_int8_t *opt;
/* validation of the length of the header */
-#ifndef PULLDOWN_TEST
IP6_EXTHDR_CHECK(m, off, sizeof (*hbh), return (-1));
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off);
hbhlen = (hbh->ip6h_len + 1) << 3;
IP6_EXTHDR_CHECK(m, off, hbhlen, return (-1));
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off);
-#else
- IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof (struct ip6_hdr),
- sizeof (struct ip6_hbh));
- if (hbh == NULL) {
- ip6stat.ip6s_tooshort++;
- return (-1);
- }
- hbhlen = (hbh->ip6h_len + 1) << 3;
- IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof (struct ip6_hdr),
- hbhlen);
- if (hbh == NULL) {
- ip6stat.ip6s_tooshort++;
- return (-1);
- }
-#endif
off += hbhlen;
hbhlen -= sizeof (struct ip6_hbh);
opt = (u_int8_t *)hbh + sizeof (struct ip6_hbh);
if (ip6->ip6_nxt == IPPROTO_HOPOPTS) {
struct ip6_hbh *hbh;
int hbhlen = 0;
-#if PULLDOWN_TEST
- struct mbuf *ext;
-#endif
-
-#ifndef PULLDOWN_TEST
hbh = (struct ip6_hbh *)(ip6 + 1);
hbhlen = (hbh->ip6h_len + 1) << 3;
-#else
- ext = ip6_pullexthdr(m, sizeof (struct ip6_hdr),
- ip6->ip6_nxt);
- if (ext == NULL) {
- ip6stat.ip6s_tooshort++;
- return (0);
- }
- hbh = mtod(ext, struct ip6_hbh *);
- hbhlen = (hbh->ip6h_len + 1) << 3;
- if (hbhlen != ext->m_len) {
- m_freem(ext);
- ip6stat.ip6s_tooshort++;
- return (0);
- }
-#endif
/*
* XXX: We copy the whole header even if a
IS2292(in6p, IPV6_2292HOPOPTS, IPV6_HOPOPTS),
IPPROTO_IPV6, mp);
-#if PULLDOWN_TEST
- m_freem(ext);
-#endif
if (*mp == NULL) {
goto no_mbufs;
}
while (1) { /* is explicit loop prevention necessary? */
struct ip6_ext *ip6e = NULL;
int elen;
-#if PULLDOWN_TEST
- struct mbuf *ext = NULL;
-#endif
/*
* if it is not an extension header, don't try to
goto loopend;
}
-#ifndef PULLDOWN_TEST
if (off + sizeof (*ip6e) > m->m_len)
goto loopend;
ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + off);
elen = (ip6e->ip6e_len + 1) << 3;
if (off + elen > m->m_len)
goto loopend;
-#else
- ext = ip6_pullexthdr(m, off, nxt);
- if (ext == NULL) {
- ip6stat.ip6s_tooshort++;
- return (0);
- }
- ip6e = mtod(ext, struct ip6_ext *);
- if (nxt == IPPROTO_AH)
- elen = (ip6e->ip6e_len + 2) << 2;
- else
- elen = (ip6e->ip6e_len + 1) << 3;
- if (elen != ext->m_len) {
- m_freem(ext);
- ip6stat.ip6s_tooshort++;
- return (0);
- }
-#endif
switch (nxt) {
case IPPROTO_DSTOPTS:
IS2292(in6p, IPV6_2292DSTOPTS,
IPV6_DSTOPTS), IPPROTO_IPV6, mp);
if (*mp == NULL) {
-#if PULLDOWN_TEST
- m_freem(ext);
-#endif
goto no_mbufs;
}
break;
IS2292(in6p, IPV6_2292RTHDR, IPV6_RTHDR),
IPPROTO_IPV6, mp);
if (*mp == NULL) {
-#if PULLDOWN_TEST
- m_freem(ext);
-#endif
goto no_mbufs;
}
break;
* the code just in case (nxt overwritten or
* other cases).
*/
-#if PULLDOWN_TEST
- m_freem(ext);
-#endif
goto loopend;
}
off += elen;
nxt = ip6e->ip6e_nxt;
ip6e = NULL;
-#if PULLDOWN_TEST
- m_freem(ext);
- ext = NULL;
-#endif
}
loopend:
;
}
}
-#if PULLDOWN_TEST
-/*
- * pull single extension header from mbuf chain. returns single mbuf that
- * contains the result, or NULL on error.
- */
-static struct mbuf *
-ip6_pullexthdr(m, off, nxt)
- struct mbuf *m;
- size_t off;
- int nxt;
-{
- struct ip6_ext ip6e;
- size_t elen;
- struct mbuf *n;
-
-#if DIAGNOSTIC
- switch (nxt) {
- case IPPROTO_DSTOPTS:
- case IPPROTO_ROUTING:
- case IPPROTO_HOPOPTS:
- case IPPROTO_AH: /* is it possible? */
- break;
- default:
- printf("ip6_pullexthdr: invalid nxt=%d\n", nxt);
- }
-#endif
-
- m_copydata(m, off, sizeof (ip6e), (caddr_t)&ip6e);
- if (nxt == IPPROTO_AH)
- elen = (ip6e.ip6e_len + 2) << 2;
- else
- elen = (ip6e.ip6e_len + 1) << 3;
-
- MGET(n, M_DONTWAIT, MT_DATA);
- if (n && elen >= MLEN) {
- MCLGET(n, M_DONTWAIT);
- if ((n->m_flags & M_EXT) == 0) {
- m_free(n);
- n = NULL;
- }
- }
- if (!n)
- return (NULL);
-
- n->m_len = 0;
- if (elen >= M_TRAILINGSPACE(n)) {
- m_free(n);
- return (NULL);
- }
-
- m_copydata(m, off, elen, mtod(n, caddr_t));
- n->m_len = elen;
- return (n);
-}
-#endif
-
/*
* Get pointer to the previous header followed by the header
* currently processed.
projects / apple / xnu.git / blobdiff