| version 1.41.2.2, 2002/01/10 20:03:20 |
version 1.41.2.3, 2002/06/23 17:51:15 |
| Line 109 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| Line 109 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| #include <netinet/icmp6.h> |
#include <netinet/icmp6.h> |
| #include <netinet6/in6_ifattach.h> |
#include <netinet6/in6_ifattach.h> |
| #include <netinet6/nd6.h> |
#include <netinet6/nd6.h> |
| #include <netinet6/in6_prefix.h> |
|
| |
|
| #ifdef IPSEC |
#ifdef IPSEC |
| #include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
|
|
| { |
{ |
| struct ip6protosw *pr; |
struct ip6protosw *pr; |
| int i; |
int i; |
| struct timeval tv; |
|
| |
|
| pr = (struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); |
pr = (struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); |
| if (pr == 0) |
if (pr == 0) |
|
|
| ip6intrq.ifq_maxlen = ip6qmaxlen; |
ip6intrq.ifq_maxlen = ip6qmaxlen; |
| nd6_init(); |
nd6_init(); |
| frag6_init(); |
frag6_init(); |
| /* |
ip6_flow_seq = arc4random(); |
| * in many cases, random() here does NOT return random number |
|
| * as initialization during bootstrap time occur in fixed order. |
|
| */ |
|
| microtime(&tv); |
|
| ip6_flow_seq = random() ^ tv.tv_usec; |
|
| |
|
| ip6_init2((void *)0); |
ip6_init2((void *)0); |
| |
|
|
|
| ip6_init2(dummy) |
ip6_init2(dummy) |
| void *dummy; |
void *dummy; |
| { |
{ |
| /* |
|
| * to route local address of p2p link to loopback, |
|
| * assign loopback address first. |
|
| */ |
|
| in6_ifattach(&loif[0], NULL); |
|
| |
|
| /* nd6_timer_init */ |
/* nd6_timer_init */ |
| callout_init(&nd6_timer_ch); |
callout_init(&nd6_timer_ch); |
| callout_reset(&nd6_timer_ch, hz, nd6_timer, NULL); |
callout_reset(&nd6_timer_ch, hz, nd6_timer, NULL); |
| /* router renumbering prefix list maintenance */ |
|
| callout_init(&in6_rr_timer_ch); |
|
| callout_reset(&in6_rr_timer_ch, hz, in6_rr_timer, NULL); |
|
| } |
} |
| |
|
| /* |
/* |
|
|
| if (m->m_len < sizeof(struct ip6_hdr)) { |
if (m->m_len < sizeof(struct ip6_hdr)) { |
| struct ifnet *inifp; |
struct ifnet *inifp; |
| inifp = m->m_pkthdr.rcvif; |
inifp = m->m_pkthdr.rcvif; |
| if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == NULL) { |
| ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
| in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
| return; |
return; |
|
|
| */ |
*/ |
| if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_src) || |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_src) || |
| IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_dst)) { |
IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_dst)) { |
| |
/* |
| |
* XXX: "badscope" is not very suitable for a multicast source. |
| |
*/ |
| ip6stat.ip6s_badscope++; |
ip6stat.ip6s_badscope++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
| goto bad; |
goto bad; |
|
|
| * support IPv4-less kernel compilation, we cannot support SIIT |
* support IPv4-less kernel compilation, we cannot support SIIT |
| * environment at all. So, it makes more sense for us to reject any |
* environment at all. So, it makes more sense for us to reject any |
| * malicious packets for non-SIIT environment, than try to do a |
* malicious packets for non-SIIT environment, than try to do a |
| * partical support for SIIT environment. |
* partial support for SIIT environment. |
| */ |
*/ |
| if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
| IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
|
|
| * Unicast check |
* Unicast check |
| */ |
*/ |
| if (ip6_forward_rt.ro_rt != NULL && |
if (ip6_forward_rt.ro_rt != NULL && |
| (ip6_forward_rt.ro_rt->rt_flags & RTF_UP) != 0 && |
(ip6_forward_rt.ro_rt->rt_flags & RTF_UP) != 0 && |
| IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
| &((struct sockaddr_in6 *)(&ip6_forward_rt.ro_dst))->sin6_addr)) |
&((struct sockaddr_in6 *)(&ip6_forward_rt.ro_dst))->sin6_addr)) |
| ip6stat.ip6s_forward_cachehit++; |
ip6stat.ip6s_forward_cachehit++; |
|
|
| if (ip6_forward_rt.ro_rt && |
if (ip6_forward_rt.ro_rt && |
| (ip6_forward_rt.ro_rt->rt_flags & |
(ip6_forward_rt.ro_rt->rt_flags & |
| (RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
(RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
| |
!(ip6_forward_rt.ro_rt->rt_flags & RTF_CLONED) && |
| #if 0 |
#if 0 |
| /* |
/* |
| * The check below is redundant since the comparison of |
* The check below is redundant since the comparison of |
|
|
| * already done through looking up the routing table. |
* already done through looking up the routing table. |
| */ |
*/ |
| IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
| &rt6_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
&rt6_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
| #endif |
#endif |
| ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
| struct in6_ifaddr *ia6 = |
struct in6_ifaddr *ia6 = |
|
|
| } |
} |
| |
|
| /* |
/* |
| * FAITH(Firewall Aided Internet Translator) |
* FAITH (Firewall Aided Internet Translator) |
| */ |
*/ |
| #if defined(NFAITH) && 0 < NFAITH |
#if defined(NFAITH) && 0 < NFAITH |
| if (ip6_keepfaith) { |
if (ip6_keepfaith) { |
|
|
| /* |
/* |
| * Note that if a valid jumbo payload option is |
* Note that if a valid jumbo payload option is |
| * contained, ip6_hoptops_input() must set a valid |
* contained, ip6_hoptops_input() must set a valid |
| * (non-zero) payload length to the variable plen. |
* (non-zero) payload length to the variable plen. |
| */ |
*/ |
| ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_badoptions++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
|
|
| } else if (!ours) { |
} else if (!ours) { |
| ip6_forward(m, 0); |
ip6_forward(m, 0); |
| return; |
return; |
| } |
} |
| |
|
| ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
| |
|
|
|
| goto bad; |
goto bad; |
| } |
} |
| #endif |
#endif |
| |
|
| nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
| } |
} |
| return; |
return; |
| Line 818 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
| Line 807 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
| * This function is separate from ip6_hopopts_input() in order to |
* This function is separate from ip6_hopopts_input() in order to |
| * handle a case where the sending node itself process its hop-by-hop |
* handle a case where the sending node itself process its hop-by-hop |
| * options header. In such a case, the function is called from ip6_output(). |
* options header. In such a case, the function is called from ip6_output(). |
| |
* |
| |
* The function assumes that hbh header is located right after the IPv6 header |
| |
* (RFC2460 p7), opthead is pointer into data content in m, and opthead to |
| |
* opthead + hbhlen is located in continuous memory region. |
| */ |
*/ |
| int |
int |
| ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp) |
ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp) |
| Line 832 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 825 ip6_process_hopopts(m, opthead, hbhlen, |
|
| u_int8_t *opt = opthead; |
u_int8_t *opt = opthead; |
| u_int16_t rtalert_val; |
u_int16_t rtalert_val; |
| u_int32_t jumboplen; |
u_int32_t jumboplen; |
| |
const int erroff = sizeof(struct ip6_hdr) + sizeof(struct ip6_hbh); |
| |
|
| for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) { |
for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) { |
| switch (*opt) { |
switch (*opt) { |
| Line 852 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 846 ip6_process_hopopts(m, opthead, hbhlen, |
|
| goto bad; |
goto bad; |
| } |
} |
| if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) { |
if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) { |
| /* XXX: should we discard the packet? */ |
/* XXX stat */ |
| log(LOG_ERR, "length of router alert opt is inconsitent(%d)", |
icmp6_error(m, ICMP6_PARAM_PROB, |
| *(opt + 1)); |
ICMP6_PARAMPROB_HEADER, |
| |
erroff + opt + 1 - opthead); |
| |
return (-1); |
| } |
} |
| optlen = IP6OPT_RTALERT_LEN; |
optlen = IP6OPT_RTALERT_LEN; |
| bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2); |
bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2); |
| Line 867 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 863 ip6_process_hopopts(m, opthead, hbhlen, |
|
| goto bad; |
goto bad; |
| } |
} |
| if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { |
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { |
| /* XXX: should we discard the packet? */ |
/* XXX stat */ |
| log(LOG_ERR, "length of jumbopayload opt " |
icmp6_error(m, ICMP6_PARAM_PROB, |
| "is inconsistent(%d)\n", |
ICMP6_PARAMPROB_HEADER, |
| *(opt + 1)); |
erroff + opt + 1 - opthead); |
| |
return (-1); |
| } |
} |
| optlen = IP6OPT_JUMBO_LEN; |
optlen = IP6OPT_JUMBO_LEN; |
| |
|
| Line 882 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 879 ip6_process_hopopts(m, opthead, hbhlen, |
|
| if (ip6->ip6_plen) { |
if (ip6->ip6_plen) { |
| ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_badoptions++; |
| icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
| ICMP6_PARAMPROB_HEADER, |
ICMP6_PARAMPROB_HEADER, |
| sizeof(struct ip6_hdr) + |
erroff + opt - opthead); |
| sizeof(struct ip6_hbh) + |
return (-1); |
| opt - opthead); |
|
| return(-1); |
|
| } |
} |
| |
|
| /* |
/* |
| Line 908 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 903 ip6_process_hopopts(m, opthead, hbhlen, |
|
| if (*plenp != 0) { |
if (*plenp != 0) { |
| ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_badoptions++; |
| icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
| ICMP6_PARAMPROB_HEADER, |
ICMP6_PARAMPROB_HEADER, |
| sizeof(struct ip6_hdr) + |
erroff + opt + 2 - opthead); |
| sizeof(struct ip6_hbh) + |
return (-1); |
| opt + 2 - opthead); |
|
| return(-1); |
|
| } |
} |
| #endif |
#endif |
| |
|
| Line 922 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 915 ip6_process_hopopts(m, opthead, hbhlen, |
|
| if (jumboplen <= IPV6_MAXPACKET) { |
if (jumboplen <= IPV6_MAXPACKET) { |
| ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_badoptions++; |
| icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
| ICMP6_PARAMPROB_HEADER, |
ICMP6_PARAMPROB_HEADER, |
| sizeof(struct ip6_hdr) + |
erroff + opt + 2 - opthead); |
| sizeof(struct ip6_hbh) + |
return (-1); |
| opt + 2 - opthead); |
|
| return(-1); |
|
| } |
} |
| *plenp = jumboplen; |
*plenp = jumboplen; |
| |
|
| Line 936 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 927 ip6_process_hopopts(m, opthead, hbhlen, |
|
| ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
| goto bad; |
goto bad; |
| } |
} |
| if ((optlen = ip6_unknown_opt(opt, m, |
optlen = ip6_unknown_opt(opt, m, |
| sizeof(struct ip6_hdr) + |
erroff + opt - opthead); |
| sizeof(struct ip6_hbh) + |
if (optlen == -1) |
| opt - opthead)) == -1) |
return (-1); |
| return(-1); |
|
| optlen += 2; |
optlen += 2; |
| break; |
break; |
| } |
} |
| } |
} |
| |
|
| return(0); |
return (0); |
| |
|
| bad: |
bad: |
| m_freem(m); |
m_freem(m); |
| return(-1); |
return (-1); |
| } |
} |
| |
|
| /* |
/* |
| Line 1517 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
| Line 1507 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
| } |
} |
| return (error); |
return (error); |
| #endif |
#endif |
| |
case IPV6CTL_MAXFRAGS: |
| |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_maxfrags); |
| default: |
default: |
| return EOPNOTSUPP; |
return EOPNOTSUPP; |
| } |
} |