version 1.82.4.1, 2006/04/22 11:40:12 |
version 1.82.4.2, 2006/06/01 22:39:02 |
|
|
__KERNEL_RCSID(0, "$NetBSD$"); |
__KERNEL_RCSID(0, "$NetBSD$"); |
|
|
#include "opt_inet.h" |
#include "opt_inet.h" |
|
#include "opt_inet6.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_pfil_hooks.h" |
#include "opt_pfil_hooks.h" |
|
|
|
|
* 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( |
|
m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
|
goto bad; |
|
ip6 = mtod(m, struct ip6_hdr *); |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
ip6stat.ip6s_badscope++; /* XXX */ |
ip6stat.ip6s_badscope++; /* XXX */ |
goto bad; |
goto bad; |
Line 1030 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1035 ip6_savecontrol(in6p, mp, ip6, m) |
|
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
|
#ifdef RFC2292 |
|
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
|
#else |
|
#define IS2292(x, y) (y) |
|
#endif |
|
|
#ifdef SO_TIMESTAMP |
#ifdef SO_TIMESTAMP |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
struct timeval tv; |
struct timeval tv; |
Line 1041 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1052 ip6_savecontrol(in6p, mp, ip6, m) |
|
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
#endif |
#endif |
if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
|
*mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
|
sizeof(struct in6_addr), IPV6_RECVDSTADDR, IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
|
|
#ifdef noyet |
/* some OSes call this logic with IPv4 packet, for SO_TIMESTAMP */ |
/* options were tossed above */ |
if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) |
if (in6p->in6p_flags & IN6P_RECVOPTS) |
return; |
/* broken */ |
|
/* ip6_srcroute doesn't do what we want here, need to fix */ |
|
if (in6p->in6p_flags & IPV6P_RECVRETOPTS) |
|
/* broken */ |
|
#endif |
|
|
|
/* RFC 2292 sec. 5 */ |
/* RFC 2292 sec. 5 */ |
if ((in6p->in6p_flags & IN6P_PKTINFO) != 0) { |
if ((in6p->in6p_flags & IN6P_PKTINFO) != 0) { |
struct in6_pktinfo pi6; |
struct in6_pktinfo pi6; |
|
|
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
pi6.ipi6_ifindex = m->m_pkthdr.rcvif ? |
pi6.ipi6_ifindex = m->m_pkthdr.rcvif ? |
m->m_pkthdr.rcvif->if_index : 0; |
m->m_pkthdr.rcvif->if_index : 0; |
*mp = sbcreatecontrol((caddr_t) &pi6, |
*mp = sbcreatecontrol((caddr_t) &pi6, |
sizeof(struct in6_pktinfo), IPV6_PKTINFO, IPPROTO_IPV6); |
sizeof(struct in6_pktinfo), |
|
IS2292(IPV6_2292PKTINFO, IPV6_PKTINFO), IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
|
if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
int hlim = ip6->ip6_hlim & 0xff; |
int hlim = ip6->ip6_hlim & 0xff; |
|
|
*mp = sbcreatecontrol((caddr_t) &hlim, sizeof(int), |
*mp = sbcreatecontrol((caddr_t) &hlim, sizeof(int), |
IPV6_HOPLIMIT, IPPROTO_IPV6); |
IS2292(IPV6_2292HOPLIMIT, IPV6_HOPLIMIT), IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
|
|
if ((in6p->in6p_flags & IN6P_TCLASS) != 0) { |
|
u_int32_t flowinfo; |
|
int tclass; |
|
|
|
flowinfo = (u_int32_t)ntohl(ip6->ip6_flow & IPV6_FLOWINFO_MASK); |
|
flowinfo >>= 20; |
|
|
|
tclass = flowinfo & 0xff; |
|
*mp = sbcreatecontrol((caddr_t)&tclass, sizeof(tclass), |
|
IPV6_TCLASS, IPPROTO_IPV6); |
|
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
/* IN6P_NEXTHOP - for outgoing packet only */ |
|
|
|
/* |
/* |
* IPV6_HOPOPTS socket option. Recall that we required super-user |
* IPV6_HOPOPTS socket option. Recall that we required super-user |
* privilege for the option (see ip6_ctloutput), but it might be too |
* privilege for the option (see ip6_ctloutput), but it might be too |
* strict, since there might be some hop-by-hop options which can be |
* strict, since there might be some hop-by-hop options which can be |
* returned to normal user. |
* returned to normal user. |
* See also RFC 2292 section 6. |
* See also RFC3542 section 8 (or RFC2292 section 6). |
*/ |
*/ |
if ((in6p->in6p_flags & IN6P_HOPOPTS) != 0) { |
if ((in6p->in6p_flags & IN6P_HOPOPTS) != 0) { |
/* |
/* |
Line 1117 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1135 ip6_savecontrol(in6p, mp, ip6, m) |
|
* XXX: We copy whole the header even if a jumbo |
* XXX: We copy whole the header even if a jumbo |
* payload option is included, which option is to |
* payload option is included, which option is to |
* be removed before returning in the RFC 2292. |
* be removed before returning in the RFC 2292. |
* But it's too painful operation... |
* Note: this constraint is removed in RFC3542. |
*/ |
*/ |
*mp = sbcreatecontrol((caddr_t)hbh, hbhlen, |
*mp = sbcreatecontrol((caddr_t)hbh, hbhlen, |
IPV6_HOPOPTS, IPPROTO_IPV6); |
IS2292(IPV6_2292HOPOPTS, IPV6_HOPOPTS), |
|
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
m_freem(ext); |
m_freem(ext); |
Line 1139 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1158 ip6_savecontrol(in6p, mp, ip6, m) |
|
* Note that the order of the headers remains in |
* Note that the order of the headers remains in |
* the chain of ancillary data. |
* the chain of ancillary data. |
*/ |
*/ |
while (1) { /* is explicit loop prevention necessary? */ |
for (;;) { /* is explicit loop prevention necessary? */ |
struct ip6_ext *ip6e = NULL; |
struct ip6_ext *ip6e = NULL; |
int elen; |
int elen; |
struct mbuf *ext = NULL; |
struct mbuf *ext = NULL; |
Line 1181 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1200 ip6_savecontrol(in6p, mp, ip6, m) |
|
break; |
break; |
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
IPV6_DSTOPTS, IPPROTO_IPV6); |
IS2292(IPV6_2292DSTOPTS, IPV6_DSTOPTS), |
|
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
Line 1191 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1211 ip6_savecontrol(in6p, mp, ip6, m) |
|
break; |
break; |
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
IPV6_RTHDR, IPPROTO_IPV6); |
IS2292(IPV6_2292RTHDR, IPV6_RTHDR), |
|
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
Line 1223 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1244 ip6_savecontrol(in6p, mp, ip6, m) |
|
; |
; |
} |
} |
} |
} |
|
#undef IS2292 |
|
|
|
|
|
void |
|
ip6_notify_pmtu(struct in6pcb *in6p, struct sockaddr_in6 *dst, uint32_t *mtu) |
|
{ |
|
struct socket *so; |
|
struct mbuf *m_mtu; |
|
struct ip6_mtuinfo mtuctl; |
|
|
|
so = in6p->in6p_socket; |
|
|
|
if (mtu == NULL) |
|
return; |
|
|
|
#ifdef DIAGNOSTIC |
|
if (so == NULL) /* I believe this is impossible */ |
|
panic("ip6_notify_pmtu: socket is NULL"); |
|
#endif |
|
|
|
memset(&mtuctl, 0, sizeof(mtuctl)); /* zero-clear for safety */ |
|
mtuctl.ip6m_mtu = *mtu; |
|
mtuctl.ip6m_addr = *dst; |
|
if (sa6_recoverscope(&mtuctl.ip6m_addr)) |
|
return; |
|
|
|
if ((m_mtu = sbcreatecontrol((caddr_t)&mtuctl, sizeof(mtuctl), |
|
IPV6_PATHMTU, IPPROTO_IPV6)) == NULL) |
|
return; |
|
|
|
if (sbappendaddr(&so->so_rcv, (struct sockaddr *)dst, NULL, m_mtu) |
|
== 0) { |
|
m_freem(m_mtu); |
|
/* XXX: should count statistics */ |
|
} else |
|
sorwakeup(so); |
|
|
|
return; |
|
} |
|
|
/* |
/* |
* pull single extension header from mbuf chain. returns single mbuf that |
* pull single extension header from mbuf chain. returns single mbuf that |
Line 1428 ip6_lasthdr(m, off, proto, nxtp) |
|
Line 1488 ip6_lasthdr(m, off, proto, nxtp) |
|
nxt = -1; |
nxt = -1; |
nxtp = &nxt; |
nxtp = &nxt; |
} |
} |
while (1) { |
for (;;) { |
newoff = ip6_nexthdr(m, off, proto, nxtp); |
newoff = ip6_nexthdr(m, off, proto, nxtp); |
if (newoff < 0) |
if (newoff < 0) |
return off; |
return off; |
Line 1496 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
Line 1556 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
|
|
SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, "sysctl net.inet6.ip6 subtree setup") |
SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, "sysctl net.inet6.ip6 subtree setup") |
{ |
{ |
|
#ifdef RFC2292 |
|
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
|
#else |
|
#define IS2292(x, y) (y) |
|
#endif |
|
|
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT, |
CTLFLAG_PERMANENT, |