version 1.149.4.10, 2017/02/05 13:40:59 |
version 1.178.2.8, 2019/09/17 18:57:23 |
Line 75 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 75 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/systm.h> |
#include <sys/systm.h> |
#include <sys/malloc.h> |
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#include <sys/mbuf.h> |
#include <sys/mbuf.h> |
#include <sys/domain.h> |
#include <sys/domain.h> |
#include <sys/protosw.h> |
#include <sys/protosw.h> |
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KASSERT(inet6_pfil_hook != NULL); |
KASSERT(inet6_pfil_hook != NULL); |
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ip6stat_percpu = percpu_alloc(sizeof(uint64_t) * IP6_NSTATS); |
ip6stat_percpu = percpu_alloc(sizeof(uint64_t) * IP6_NSTATS); |
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ip6_forward_rt_percpu = percpu_alloc(sizeof(struct route)); |
ip6_forward_rt_percpu = percpu_alloc(sizeof(struct route)); |
if (ip6_forward_rt_percpu == NULL) |
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panic("failed to alllocate ip6_forward_rt_percpu"); |
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} |
} |
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static void |
static void |
Line 232 ip6intr(void *arg __unused) |
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Line 228 ip6intr(void *arg __unused) |
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{ |
{ |
struct mbuf *m; |
struct mbuf *m; |
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#ifndef NET_MPSAFE |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
mutex_enter(softnet_lock); |
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#endif |
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while ((m = pktq_dequeue(ip6_pktq)) != NULL) { |
while ((m = pktq_dequeue(ip6_pktq)) != NULL) { |
struct psref psref; |
struct psref psref; |
struct ifnet *rcvif = m_get_rcvif_psref(m, &psref); |
struct ifnet *rcvif = m_get_rcvif_psref(m, &psref); |
Line 254 ip6intr(void *arg __unused) |
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Line 248 ip6intr(void *arg __unused) |
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ip6_input(m, rcvif); |
ip6_input(m, rcvif); |
m_put_rcvif_psref(rcvif, &psref); |
m_put_rcvif_psref(rcvif, &psref); |
} |
} |
#ifndef NET_MPSAFE |
SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); |
mutex_exit(softnet_lock); |
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#endif |
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} |
} |
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void |
void |
Line 266 ip6_input(struct mbuf *m, struct ifnet * |
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Line 258 ip6_input(struct mbuf *m, struct ifnet * |
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int hit, off = sizeof(struct ip6_hdr), nest; |
int hit, off = sizeof(struct ip6_hdr), nest; |
u_int32_t plen; |
u_int32_t plen; |
u_int32_t rtalert = ~0; |
u_int32_t rtalert = ~0; |
int nxt, ours = 0, rh_present = 0; |
int nxt, ours = 0, rh_present = 0, frg_present; |
struct ifnet *deliverifp = NULL; |
struct ifnet *deliverifp = NULL; |
int srcrt = 0; |
int srcrt = 0; |
struct rtentry *rt = NULL; |
struct rtentry *rt = NULL; |
Line 366 ip6_input(struct mbuf *m, struct ifnet * |
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Line 358 ip6_input(struct mbuf *m, struct ifnet * |
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return; |
return; |
if (m == NULL) |
if (m == NULL) |
return; |
return; |
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if (__predict_false(m->m_len < sizeof(struct ip6_hdr))) { |
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if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == NULL) { |
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IP6_STATINC(IP6_STAT_TOOSMALL); |
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in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
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return; |
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} |
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} |
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst); |
srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst); |
} |
} |
Line 438 ip6_input(struct mbuf *m, struct ifnet * |
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Line 437 ip6_input(struct mbuf *m, struct ifnet * |
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* to the usage conflict. |
* to the usage conflict. |
* in6_setscope() then also checks and rejects the cases where src or |
* in6_setscope() then also checks and rejects the cases where src or |
* dst are the loopback address and the receiving interface |
* dst are the loopback address and the receiving interface |
* is not loopback. |
* is not loopback. |
*/ |
*/ |
if (__predict_false( |
if (__predict_false( |
m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
Line 459 ip6_input(struct mbuf *m, struct ifnet * |
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Line 458 ip6_input(struct mbuf *m, struct ifnet * |
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* Multicast check |
* Multicast check |
*/ |
*/ |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { |
struct in6_multi *in6m = 0; |
bool ingroup; |
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in6_ifstat_inc(rcvif, ifs6_in_mcast); |
in6_ifstat_inc(rcvif, ifs6_in_mcast); |
/* |
/* |
* See if we belong to the destination multicast group on the |
* See if we belong to the destination multicast group on the |
* arrival interface. |
* arrival interface. |
*/ |
*/ |
IN6_LOOKUP_MULTI(ip6->ip6_dst, rcvif, in6m); |
ingroup = in6_multi_group(&ip6->ip6_dst, rcvif); |
if (in6m) |
if (ingroup) |
ours = 1; |
ours = 1; |
else if (!ip6_mrouter) { |
else if (!ip6_mrouter) { |
uint64_t *ip6s = IP6_STAT_GETREF(); |
uint64_t *ip6s = IP6_STAT_GETREF(); |
Line 515 ip6_input(struct mbuf *m, struct ifnet * |
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Line 514 ip6_input(struct mbuf *m, struct ifnet * |
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#endif |
#endif |
rt->rt_ifp->if_type == IFT_LOOP) { |
rt->rt_ifp->if_type == IFT_LOOP) { |
struct in6_ifaddr *ia6 = (struct in6_ifaddr *)rt->rt_ifa; |
struct in6_ifaddr *ia6 = (struct in6_ifaddr *)rt->rt_ifa; |
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int addrok; |
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if (ia6->ia6_flags & IN6_IFF_ANYCAST) |
if (ia6->ia6_flags & IN6_IFF_ANYCAST) |
m->m_flags |= M_ANYCAST6; |
m->m_flags |= M_ANYCAST6; |
/* |
/* |
* packets to a tentative, duplicated, or somehow invalid |
* packets to a tentative, duplicated, or somehow invalid |
* address must not be accepted. |
* address must not be accepted. |
*/ |
*/ |
if (!(ia6->ia6_flags & (IN6_IFF_NOTREADY | IN6_IFF_DETACHED))) { |
if (ia6->ia6_flags & IN6_IFF_NOTREADY) |
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addrok = 0; |
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else if (ia6->ia6_flags & IN6_IFF_DETACHED && |
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!IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_src)) |
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{ |
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/* Allow internal traffic to DETACHED addresses */ |
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struct sockaddr_in6 sin6; |
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int s; |
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memset(&sin6, 0, sizeof(sin6)); |
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sin6.sin6_family = AF_INET6; |
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sin6.sin6_len = sizeof(sin6); |
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sin6.sin6_addr = ip6->ip6_src; |
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s = pserialize_read_enter(); |
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addrok = (ifa_ifwithaddr(sin6tosa(&sin6)) != NULL); |
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pserialize_read_exit(s); |
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} else |
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addrok = 1; |
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if (addrok) { |
/* this address is ready */ |
/* this address is ready */ |
ours = 1; |
ours = 1; |
deliverifp = ia6->ia_ifp; /* correct? */ |
deliverifp = ia6->ia_ifp; /* correct? */ |
Line 764 ip6_input(struct mbuf *m, struct ifnet * |
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Line 783 ip6_input(struct mbuf *m, struct ifnet * |
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percpu_putref(ip6_forward_rt_percpu); |
percpu_putref(ip6_forward_rt_percpu); |
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rh_present = 0; |
rh_present = 0; |
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frg_present = 0; |
while (nxt != IPPROTO_DONE) { |
while (nxt != IPPROTO_DONE) { |
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
IP6_STATINC(IP6_STAT_TOOMANYHDR); |
IP6_STATINC(IP6_STAT_TOOMANYHDR); |
Line 787 ip6_input(struct mbuf *m, struct ifnet * |
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Line 807 ip6_input(struct mbuf *m, struct ifnet * |
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IP6_STATINC(IP6_STAT_BADOPTIONS); |
IP6_STATINC(IP6_STAT_BADOPTIONS); |
goto bad; |
goto bad; |
} |
} |
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} else if (nxt == IPPROTO_FRAGMENT) { |
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if (frg_present++) { |
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in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
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IP6_STATINC(IP6_STAT_BADOPTIONS); |
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goto bad; |
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} |
} |
} |
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#ifdef IPSEC |
#ifdef IPSEC |
Line 800 ip6_input(struct mbuf *m, struct ifnet * |
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Line 826 ip6_input(struct mbuf *m, struct ifnet * |
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& PR_LASTHDR) != 0) { |
& PR_LASTHDR) != 0) { |
int error; |
int error; |
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SOFTNET_LOCK(); |
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error = ipsec6_input(m); |
error = ipsec6_input(m); |
SOFTNET_UNLOCK(); |
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if (error) |
if (error) |
goto bad; |
goto bad; |
} |
} |
} |
} |
#endif /* IPSEC */ |
#endif /* IPSEC */ |
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SOFTNET_LOCK(); |
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nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
SOFTNET_UNLOCK(); |
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} |
} |
return; |
return; |
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Line 866 ip6_getdstifaddr(struct mbuf *m) |
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Line 888 ip6_getdstifaddr(struct mbuf *m) |
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* rtalertp - XXX: should be stored more smart way |
* rtalertp - XXX: should be stored more smart way |
*/ |
*/ |
int |
int |
ip6_hopopts_input(u_int32_t *plenp, u_int32_t *rtalertp, |
ip6_hopopts_input(u_int32_t *plenp, u_int32_t *rtalertp, |
struct mbuf **mp, int *offp) |
struct mbuf **mp, int *offp) |
{ |
{ |
struct mbuf *m = *mp; |
struct mbuf *m = *mp; |
Line 911 ip6_hopopts_input(u_int32_t *plenp, u_in |
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Line 933 ip6_hopopts_input(u_int32_t *plenp, u_in |
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* opthead + hbhlen is located in continuous memory region. |
* opthead + hbhlen is located in continuous memory region. |
*/ |
*/ |
static int |
static int |
ip6_process_hopopts(struct mbuf *m, u_int8_t *opthead, int hbhlen, |
ip6_process_hopopts(struct mbuf *m, u_int8_t *opthead, int hbhlen, |
u_int32_t *rtalertp, u_int32_t *plenp) |
u_int32_t *rtalertp, u_int32_t *plenp) |
{ |
{ |
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
Line 1086 ip6_unknown_opt(u_int8_t *optp, struct m |
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Line 1108 ip6_unknown_opt(u_int8_t *optp, struct m |
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* you are using IP6_EXTHDR_CHECK() not m_pulldown()) |
* you are using IP6_EXTHDR_CHECK() not m_pulldown()) |
*/ |
*/ |
void |
void |
ip6_savecontrol(struct in6pcb *in6p, struct mbuf **mp, |
ip6_savecontrol(struct in6pcb *in6p, struct mbuf **mp, |
struct ip6_hdr *ip6, struct mbuf *m) |
struct ip6_hdr *ip6, struct mbuf *m) |
{ |
{ |
#ifdef RFC2292 |
#ifdef RFC2292 |
Line 1323 ip6_notify_pmtu(struct in6pcb *in6p, con |
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Line 1345 ip6_notify_pmtu(struct in6pcb *in6p, con |
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if (mtu == NULL) |
if (mtu == NULL) |
return; |
return; |
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#ifdef DIAGNOSTIC |
KASSERT(so != NULL); |
if (so == NULL) /* I believe this is impossible */ |
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panic("ip6_notify_pmtu: socket is NULL"); |
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#endif |
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memset(&mtuctl, 0, sizeof(mtuctl)); /* zero-clear for safety */ |
memset(&mtuctl, 0, sizeof(mtuctl)); /* zero-clear for safety */ |
mtuctl.ip6m_mtu = *mtu; |
mtuctl.ip6m_mtu = *mtu; |
Line 1340 ip6_notify_pmtu(struct in6pcb *in6p, con |
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Line 1359 ip6_notify_pmtu(struct in6pcb *in6p, con |
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if (sbappendaddr(&so->so_rcv, (const struct sockaddr *)dst, NULL, m_mtu) |
if (sbappendaddr(&so->so_rcv, (const struct sockaddr *)dst, NULL, m_mtu) |
== 0) { |
== 0) { |
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soroverflow(so); |
m_freem(m_mtu); |
m_freem(m_mtu); |
/* XXX: should count statistics */ |
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} else |
} else |
sorwakeup(so); |
sorwakeup(so); |
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Line 1400 ip6_pullexthdr(struct mbuf *m, size_t of |
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Line 1419 ip6_pullexthdr(struct mbuf *m, size_t of |
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} |
} |
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/* |
/* |
* Get pointer to the previous header followed by the header |
* Get offset to the previous header followed by the header |
* currently processed. |
* currently processed. |
* XXX: This function supposes that |
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* M includes all headers, |
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* the next header field and the header length field of each header |
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* are valid, and |
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* the sum of each header length equals to OFF. |
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* Because of these assumptions, this function must be called very |
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* carefully. Moreover, it will not be used in the near future when |
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* we develop `neater' mechanism to process extension headers. |
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*/ |
*/ |
u_int8_t * |
int |
ip6_get_prevhdr(struct mbuf *m, int off) |
ip6_get_prevhdr(struct mbuf *m, int off) |
{ |
{ |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
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if (off == sizeof(struct ip6_hdr)) |
if (off == sizeof(struct ip6_hdr)) { |
return (&ip6->ip6_nxt); |
return offsetof(struct ip6_hdr, ip6_nxt); |
else { |
} else if (off < sizeof(struct ip6_hdr)) { |
int len, nxt; |
panic("%s: off < sizeof(struct ip6_hdr)", __func__); |
struct ip6_ext *ip6e = NULL; |
} else { |
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int len, nlen, nxt; |
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struct ip6_ext ip6e; |
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nxt = ip6->ip6_nxt; |
nxt = ip6->ip6_nxt; |
len = sizeof(struct ip6_hdr); |
len = sizeof(struct ip6_hdr); |
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nlen = 0; |
while (len < off) { |
while (len < off) { |
ip6e = (struct ip6_ext *)(mtod(m, char *) + len); |
m_copydata(m, len, sizeof(ip6e), &ip6e); |
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switch (nxt) { |
switch (nxt) { |
case IPPROTO_FRAGMENT: |
case IPPROTO_FRAGMENT: |
len += sizeof(struct ip6_frag); |
nlen = sizeof(struct ip6_frag); |
break; |
break; |
case IPPROTO_AH: |
case IPPROTO_AH: |
len += (ip6e->ip6e_len + 2) << 2; |
nlen = (ip6e.ip6e_len + 2) << 2; |
break; |
break; |
default: |
default: |
len += (ip6e->ip6e_len + 1) << 3; |
nlen = (ip6e.ip6e_len + 1) << 3; |
break; |
break; |
} |
} |
nxt = ip6e->ip6e_nxt; |
len += nlen; |
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nxt = ip6e.ip6e_nxt; |
} |
} |
if (ip6e) |
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return (&ip6e->ip6e_nxt); |
return (len - nlen); |
else |
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return NULL; |
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} |
} |
} |
} |
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