version 1.54, 1999/12/22 04:03:01 |
version 1.80, 2001/07/03 08:06:20 |
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* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 |
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 |
*/ |
*/ |
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#include "opt_inet.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
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#include "opt_inet_csum.h" |
#include "ipkdb.h" |
#include "opt_ipkdb.h" |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/malloc.h> |
#include <sys/malloc.h> |
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#include <sys/proc.h> |
#include <sys/proc.h> |
#include <sys/domain.h> |
#include <sys/domain.h> |
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#include <vm/vm.h> |
#include <uvm/uvm_extern.h> |
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
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#include <net/if.h> |
#include <net/if.h> |
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#endif |
#endif |
#endif |
#endif |
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#include "faith.h" |
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#if defined(NFAITH) && NFAITH > 0 |
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#include <net/if_faith.h> |
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#endif |
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#include <machine/stdarg.h> |
#include <machine/stdarg.h> |
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#ifdef IPSEC |
#ifdef IPSEC |
#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#include <netkey/key.h> |
#include <netkey/key.h> |
#include <netkey/key_debug.h> |
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#endif /*IPSEC*/ |
#endif /*IPSEC*/ |
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#ifdef IPKDB |
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#include <ipkdb/ipkdb.h> |
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#endif |
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/* |
/* |
* UDP protocol implementation. |
* UDP protocol implementation. |
* Per RFC 768, August, 1980. |
* Per RFC 768, August, 1980. |
Line 129 int udpcksum = 1; |
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Line 138 int udpcksum = 1; |
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int udpcksum = 0; /* XXX */ |
int udpcksum = 0; /* XXX */ |
#endif |
#endif |
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#ifdef INET |
static void udp4_sendup __P((struct mbuf *, int, struct sockaddr *, |
static void udp4_sendup __P((struct mbuf *, int, struct sockaddr *, |
struct socket *)); |
struct socket *)); |
static int udp4_realinput __P((struct sockaddr_in *, struct sockaddr_in *, |
static int udp4_realinput __P((struct sockaddr_in *, struct sockaddr_in *, |
struct mbuf *, int)); |
struct mbuf *, int)); |
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#endif |
#ifdef INET6 |
#ifdef INET6 |
static void udp6_sendup __P((struct mbuf *, int, struct sockaddr *, |
static void udp6_sendup __P((struct mbuf *, int, struct sockaddr *, |
struct socket *)); |
struct socket *)); |
Line 141 static int in6_mcmatch __P((struct in6pc |
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Line 152 static int in6_mcmatch __P((struct in6pc |
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static int udp6_realinput __P((int, struct sockaddr_in6 *, |
static int udp6_realinput __P((int, struct sockaddr_in6 *, |
struct sockaddr_in6 *, struct mbuf *, int)); |
struct sockaddr_in6 *, struct mbuf *, int)); |
#endif |
#endif |
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#ifdef INET |
static void udp_notify __P((struct inpcb *, int)); |
static void udp_notify __P((struct inpcb *, int)); |
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#endif |
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#ifndef UDBHASHSIZE |
#ifndef UDBHASHSIZE |
#define UDBHASHSIZE 128 |
#define UDBHASHSIZE 128 |
#endif |
#endif |
int udbhashsize = UDBHASHSIZE; |
int udbhashsize = UDBHASHSIZE; |
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#ifdef UDP_CSUM_COUNTERS |
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#include <sys/device.h> |
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struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
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NULL, "udp", "hwcsum bad"); |
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struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
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NULL, "udp", "hwcsum ok"); |
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struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
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NULL, "udp", "hwcsum data"); |
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struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
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NULL, "udp", "swcsum"); |
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#define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
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#else |
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#define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ |
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#endif /* UDP_CSUM_COUNTERS */ |
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void |
void |
udp_init() |
udp_init() |
{ |
{ |
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#ifdef INET |
in_pcbinit(&udbtable, udbhashsize, udbhashsize); |
in_pcbinit(&udbtable, udbhashsize, udbhashsize); |
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#endif |
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#ifdef UDP_CSUM_COUNTERS |
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evcnt_attach_static(&udp_hwcsum_bad); |
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evcnt_attach_static(&udp_hwcsum_ok); |
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evcnt_attach_static(&udp_hwcsum_data); |
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evcnt_attach_static(&udp_swcsum); |
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#endif /* UDP_CSUM_COUNTERS */ |
} |
} |
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#ifndef UDP6 |
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#ifdef INET |
void |
void |
#if __STDC__ |
#if __STDC__ |
udp_input(struct mbuf *m, ...) |
udp_input(struct mbuf *m, ...) |
Line 218 udp_input(m, va_alist) |
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Line 262 udp_input(m, va_alist) |
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} |
} |
#endif |
#endif |
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/* destination port of 0 is illegal, based on RFC768. */ |
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if (uh->uh_dport == 0) |
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goto bad; |
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/* |
/* |
* Make mbuf data length reflect UDP length. |
* Make mbuf data length reflect UDP length. |
* If not enough data to reflect UDP length, drop. |
* If not enough data to reflect UDP length, drop. |
*/ |
*/ |
len = ntohs((u_int16_t)uh->uh_ulen); |
len = ntohs((u_int16_t)uh->uh_ulen); |
if (ip->ip_len != iphlen + len) { |
if (ip->ip_len != iphlen + len) { |
if (ip->ip_len < iphlen + len) { |
if (ip->ip_len < iphlen + len || len < sizeof(struct udphdr)) { |
udpstat.udps_badlen++; |
udpstat.udps_badlen++; |
goto bad; |
goto bad; |
} |
} |
Line 235 udp_input(m, va_alist) |
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Line 283 udp_input(m, va_alist) |
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* Checksum extended UDP header and data. |
* Checksum extended UDP header and data. |
*/ |
*/ |
if (uh->uh_sum) { |
if (uh->uh_sum) { |
#ifndef PULLDOWN_TEST |
switch (m->m_pkthdr.csum_flags & |
struct ip save_ip; |
((m->m_pkthdr.rcvif->if_csum_flags & M_CSUM_UDPv4) | |
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M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
/* |
case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
* Save a copy of the IP header in case we want restore it |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
* for sending an ICMP error message in response. |
goto badcsum; |
*/ |
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save_ip = *ip; |
case M_CSUM_UDPv4|M_CSUM_DATA: |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
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if ((m->m_pkthdr.csum_data ^ 0xffff) != 0) |
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goto badcsum; |
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break; |
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bzero(((struct ipovly *)ip)->ih_x1, |
case M_CSUM_UDPv4: |
sizeof ((struct ipovly *)ip)->ih_x1); |
/* Checksum was okay. */ |
((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
if (in_cksum(m, len + sizeof (struct ip)) != 0) { |
break; |
udpstat.udps_badsum++; |
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m_freem(m); |
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return; |
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} |
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*ip = save_ip; |
default: |
#else |
/* Need to compute it ourselves. */ |
if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) { |
UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
udpstat.udps_badsum++; |
if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) |
m_freem(m); |
goto badcsum; |
return; |
break; |
} |
} |
#endif |
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} |
} |
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/* construct source and dst sockaddrs. */ |
/* construct source and dst sockaddrs. */ |
Line 300 udp_input(m, va_alist) |
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Line 347 udp_input(m, va_alist) |
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#endif |
#endif |
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if (n == 0) { |
if (n == 0) { |
udpstat.udps_noport++; |
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if (m->m_flags & (M_BCAST | M_MCAST)) { |
if (m->m_flags & (M_BCAST | M_MCAST)) { |
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
#if NIPKDB > 0 |
udpstat.udps_noport++; |
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#ifdef IPKDB |
if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, |
if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, |
m, iphlen + sizeof(struct udphdr), |
m, iphlen + sizeof(struct udphdr), |
m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { |
m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { |
Line 323 udp_input(m, va_alist) |
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Line 370 udp_input(m, va_alist) |
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bad: |
bad: |
if (m) |
if (m) |
m_freem(m); |
m_freem(m); |
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return; |
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badcsum: |
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m_freem(m); |
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udpstat.udps_badsum++; |
} |
} |
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#endif |
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#ifdef INET6 |
#ifdef INET6 |
int |
int |
Line 338 udp6_input(mp, offp, proto) |
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Line 391 udp6_input(mp, offp, proto) |
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struct udphdr *uh; |
struct udphdr *uh; |
u_int32_t plen, ulen; |
u_int32_t plen, ulen; |
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#ifndef PULLDOWN_TEST |
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IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE); |
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#endif |
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ip6 = mtod(m, struct ip6_hdr *); |
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#if defined(NFAITH) && 0 < NFAITH |
#if defined(NFAITH) && 0 < NFAITH |
if (m->m_pkthdr.rcvif) { |
if (faithprefix(&ip6->ip6_dst)) { |
if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { |
/* send icmp6 host unreach? */ |
/* send icmp6 host unreach? */ |
m_freem(m); |
m_freem(m); |
return IPPROTO_DONE; |
return IPPROTO_DONE; |
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} |
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} |
} |
#endif |
#endif |
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udp6stat.udp6s_ipackets++; |
udp6stat.udp6s_ipackets++; |
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#ifndef PULLDOWN_TEST |
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IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE); |
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#endif |
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ip6 = mtod(m, struct ip6_hdr *); |
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/* check for jumbogram is done in ip6_input. we can trust pkthdr.len */ |
/* check for jumbogram is done in ip6_input. we can trust pkthdr.len */ |
plen = m->m_pkthdr.len - off; |
plen = m->m_pkthdr.len - off; |
#ifndef PULLDOWN_TEST |
#ifndef PULLDOWN_TEST |
Line 367 udp6_input(mp, offp, proto) |
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Line 418 udp6_input(mp, offp, proto) |
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} |
} |
#endif |
#endif |
ulen = ntohs((u_short)uh->uh_ulen); |
ulen = ntohs((u_short)uh->uh_ulen); |
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/* |
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* RFC2675 section 4: jumbograms will have 0 in the UDP header field, |
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* iff payload length > 0xffff. |
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*/ |
if (ulen == 0 && plen > 0xffff) |
if (ulen == 0 && plen > 0xffff) |
ulen = plen; |
ulen = plen; |
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Line 375 udp6_input(mp, offp, proto) |
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Line 430 udp6_input(mp, offp, proto) |
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goto bad; |
goto bad; |
} |
} |
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/* destination port of 0 is illegal, based on RFC768. */ |
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if (uh->uh_dport == 0) |
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goto bad; |
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/* Be proactive about malicious use of IPv4 mapped address */ |
/* Be proactive about malicious use of IPv4 mapped address */ |
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)) { |
Line 399 udp6_input(mp, offp, proto) |
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Line 458 udp6_input(mp, offp, proto) |
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bzero(&src, sizeof(src)); |
bzero(&src, sizeof(src)); |
src.sin6_family = AF_INET6; |
src.sin6_family = AF_INET6; |
src.sin6_len = sizeof(struct sockaddr_in6); |
src.sin6_len = sizeof(struct sockaddr_in6); |
bcopy(&ip6->ip6_src, &src.sin6_addr, sizeof(src.sin6_addr)); |
/* KAME hack: recover scopeid */ |
if (IN6_IS_SCOPE_LINKLOCAL(&src.sin6_addr)) |
(void)in6_recoverscope(&src, &ip6->ip6_src, m->m_pkthdr.rcvif); |
src.sin6_addr.s6_addr16[1] = 0; |
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if (m->m_pkthdr.rcvif) { |
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if (IN6_IS_SCOPE_LINKLOCAL(&src.sin6_addr)) |
|
src.sin6_scope_id = m->m_pkthdr.rcvif->if_index; |
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else |
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src.sin6_scope_id = 0; |
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} |
|
src.sin6_port = uh->uh_sport; |
src.sin6_port = uh->uh_sport; |
bzero(&dst, sizeof(dst)); |
bzero(&dst, sizeof(dst)); |
dst.sin6_family = AF_INET6; |
dst.sin6_family = AF_INET6; |
dst.sin6_len = sizeof(struct sockaddr_in6); |
dst.sin6_len = sizeof(struct sockaddr_in6); |
bcopy(&ip6->ip6_dst, &dst.sin6_addr, sizeof(dst.sin6_addr)); |
/* KAME hack: recover scopeid */ |
if (IN6_IS_SCOPE_LINKLOCAL(&dst.sin6_addr)) |
(void)in6_recoverscope(&dst, &ip6->ip6_dst, m->m_pkthdr.rcvif); |
dst.sin6_addr.s6_addr16[1] = 0; |
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if (m->m_pkthdr.rcvif) { |
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if (IN6_IS_SCOPE_LINKLOCAL(&dst.sin6_addr)) |
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dst.sin6_scope_id = m->m_pkthdr.rcvif->if_index; |
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else |
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dst.sin6_scope_id = 0; |
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} |
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dst.sin6_port = uh->uh_dport; |
dst.sin6_port = uh->uh_dport; |
|
|
if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) { |
if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) { |
udp6stat.udp6s_noport++; |
|
if (m->m_flags & M_MCAST) { |
if (m->m_flags & M_MCAST) { |
udp6stat.udp6s_noportmcast++; |
udp6stat.udp6s_noportmcast++; |
goto bad; |
goto bad; |
} |
} |
|
udp6stat.udp6s_noport++; |
icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); |
icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); |
m = NULL; |
m = NULL; |
} |
} |
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} |
} |
#endif |
#endif |
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#ifdef INET |
static void |
static void |
udp4_sendup(m, off, src, so) |
udp4_sendup(m, off, src, so) |
struct mbuf *m; |
struct mbuf *m; |
Line 494 udp4_sendup(m, off, src, so) |
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Line 540 udp4_sendup(m, off, src, so) |
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sorwakeup(so); |
sorwakeup(so); |
} |
} |
} |
} |
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#endif |
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#ifdef INET6 |
#ifdef INET6 |
static void |
static void |
Line 540 udp6_sendup(m, off, src, so) |
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Line 587 udp6_sendup(m, off, src, so) |
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} |
} |
#endif |
#endif |
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#ifdef INET |
static int |
static int |
udp4_realinput(src, dst, m, off) |
udp4_realinput(src, dst, m, off) |
struct sockaddr_in *src; |
struct sockaddr_in *src; |
Line 563 udp4_realinput(src, dst, m, off) |
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Line 611 udp4_realinput(src, dst, m, off) |
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dst4 = &dst->sin_addr; |
dst4 = &dst->sin_addr; |
dport = &dst->sin_port; |
dport = &dst->sin_port; |
|
|
if (IN_MULTICAST(src4->s_addr) || |
if (IN_MULTICAST(dst4->s_addr) || |
in_broadcast(*dst4, m->m_pkthdr.rcvif)) { |
in_broadcast(*dst4, m->m_pkthdr.rcvif)) { |
struct inpcb *last; |
struct inpcb *last; |
/* |
/* |
Line 584 udp4_realinput(src, dst, m, off) |
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Line 632 udp4_realinput(src, dst, m, off) |
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|
|
/* |
/* |
* KAME note: usually we drop udpiphdr from mbuf here. |
* KAME note: usually we drop udpiphdr from mbuf here. |
* we need udpiphdr for iPsec processing so we do that later. |
* we need udpiphdr for IPsec processing so we do that later. |
*/ |
*/ |
/* |
/* |
* Locate pcb(s) for datagram. |
* Locate pcb(s) for datagram. |
Line 629 udp4_realinput(src, dst, m, off) |
|
Line 677 udp4_realinput(src, dst, m, off) |
|
* (No need to send an ICMP Port Unreachable |
* (No need to send an ICMP Port Unreachable |
* for a broadcast or multicast datgram.) |
* for a broadcast or multicast datgram.) |
*/ |
*/ |
udpstat.udps_noport++; |
|
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
Line 646 udp4_realinput(src, dst, m, off) |
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Line 693 udp4_realinput(src, dst, m, off) |
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#if 0 |
#if 0 |
struct mbuf *n; |
struct mbuf *n; |
|
|
udpstat.udps_noport++; |
|
if (m->m_flags & (M_BCAST | M_MCAST)) { |
if (m->m_flags & (M_BCAST | M_MCAST)) { |
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
#if NIPKDB > 0 |
udpstat.udps_noport++; |
|
#ifdef IPKDB |
if (checkipkdb(src4, *sport, *dport, m, off, |
if (checkipkdb(src4, *sport, *dport, m, off, |
m->m_pkthdr.len - off)) { |
m->m_pkthdr.len - off)) { |
/* |
/* |
Line 677 udp4_realinput(src, dst, m, off) |
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Line 724 udp4_realinput(src, dst, m, off) |
|
bad: |
bad: |
return rcvcnt; |
return rcvcnt; |
} |
} |
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#endif |
|
|
#ifdef INET6 |
#ifdef INET6 |
static int |
static int |
in6_mcmatch(in6p, ia6, ifp) |
in6_mcmatch(in6p, ia6, ifp) |
struct in6pcb *in6p; |
struct in6pcb *in6p; |
register struct in6_addr *ia6; |
struct in6_addr *ia6; |
struct ifnet *ifp; |
struct ifnet *ifp; |
{ |
{ |
struct ip6_moptions *im6o = in6p->in6p_moptions; |
struct ip6_moptions *im6o = in6p->in6p_moptions; |
Line 710 udp6_realinput(af, src, dst, m, off) |
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Line 758 udp6_realinput(af, src, dst, m, off) |
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struct mbuf *m; |
struct mbuf *m; |
int off; /* offset of udphdr */ |
int off; /* offset of udphdr */ |
{ |
{ |
u_int16_t *sport, *dport; |
u_int16_t sport, dport; |
int rcvcnt; |
int rcvcnt; |
struct in6_addr *src6, *dst6; |
struct in6_addr src6, dst6; |
struct in_addr *src4; |
const struct in_addr *dst4; |
struct in6pcb *in6p; |
struct in6pcb *in6p; |
|
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rcvcnt = 0; |
rcvcnt = 0; |
Line 724 udp6_realinput(af, src, dst, m, off) |
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Line 772 udp6_realinput(af, src, dst, m, off) |
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if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6) |
if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6) |
goto bad; |
goto bad; |
|
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src6 = &src->sin6_addr; |
in6_embedscope(&src6, src, NULL, NULL); |
sport = &src->sin6_port; |
sport = src->sin6_port; |
dst6 = &dst->sin6_addr; |
in6_embedscope(&dst6, dst, NULL, NULL); |
dport = &dst->sin6_port; |
dport = dst->sin6_port; |
src4 = (struct in_addr *)&src->sin6_addr.s6_addr32[12]; |
dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr32[12]; |
|
|
if (IN6_IS_ADDR_MULTICAST(dst6) |
if (IN6_IS_ADDR_MULTICAST(&dst6) || |
|| (af == AF_INET && IN_MULTICAST(src4->s_addr))) { |
(af == AF_INET && IN_MULTICAST(dst4->s_addr))) { |
struct in6pcb *last; |
struct in6pcb *last; |
/* |
/* |
* Deliver a multicast or broadcast datagram to *all* sockets |
* Deliver a multicast or broadcast datagram to *all* sockets |
Line 751 udp6_realinput(af, src, dst, m, off) |
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Line 799 udp6_realinput(af, src, dst, m, off) |
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|
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/* |
/* |
* KAME note: usually we drop udpiphdr from mbuf here. |
* KAME note: usually we drop udpiphdr from mbuf here. |
* we need udpiphdr for iPsec processing so we do that later. |
* we need udpiphdr for IPsec processing so we do that later. |
*/ |
*/ |
/* |
/* |
* Locate pcb(s) for datagram. |
* Locate pcb(s) for datagram. |
*/ |
*/ |
for (in6p = udb6.in6p_next; in6p != &udb6; |
for (in6p = udb6.in6p_next; in6p != &udb6; |
in6p = in6p->in6p_next) { |
in6p = in6p->in6p_next) { |
if (in6p->in6p_lport != *dport) |
if (in6p->in6p_lport != dport) |
continue; |
continue; |
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { |
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { |
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, dst6) |
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &dst6) && |
&& !in6_mcmatch(in6p, dst6, m->m_pkthdr.rcvif)) |
!in6_mcmatch(in6p, &dst6, m->m_pkthdr.rcvif)) |
|
continue; |
|
} |
|
#ifndef INET6_BINDV6ONLY |
|
else { |
|
if (IN6_IS_ADDR_V4MAPPED(&dst6) && |
|
(in6p->in6p_flags & IN6P_BINDV6ONLY)) |
continue; |
continue; |
} |
} |
|
#endif |
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { |
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { |
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, src6) |
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, |
|| in6p->in6p_fport != *sport) |
&src6) || in6p->in6p_fport != sport) |
continue; |
continue; |
} |
} |
|
#ifndef INET6_BINDV6ONLY |
|
else { |
|
if (IN6_IS_ADDR_V4MAPPED(&src6) && |
|
(in6p->in6p_flags & IN6P_BINDV6ONLY)) |
|
continue; |
|
} |
|
#endif |
|
|
last = in6p; |
last = in6p; |
udp6_sendup(m, off, (struct sockaddr *)src, |
udp6_sendup(m, off, (struct sockaddr *)src, |
Line 798 udp6_realinput(af, src, dst, m, off) |
|
Line 860 udp6_realinput(af, src, dst, m, off) |
|
*/ |
*/ |
switch (af) { |
switch (af) { |
case AF_INET: |
case AF_INET: |
udpstat.udps_noport++; |
|
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
break; |
break; |
case AF_INET6: |
case AF_INET6: |
udp6stat.udp6s_noport++; |
|
udp6stat.udp6s_noportmcast++; |
udp6stat.udp6s_noportmcast++; |
break; |
break; |
} |
} |
Line 813 udp6_realinput(af, src, dst, m, off) |
|
Line 873 udp6_realinput(af, src, dst, m, off) |
|
/* |
/* |
* Locate pcb for datagram. |
* Locate pcb for datagram. |
*/ |
*/ |
in6p = in6_pcblookup_connect(&udb6, src6, *sport, |
in6p = in6_pcblookup_connect(&udb6, &src6, sport, |
dst6, *dport, 0); |
&dst6, dport, 0); |
if (in6p == 0) { |
if (in6p == 0) { |
++udpstat.udps_pcbhashmiss; |
++udpstat.udps_pcbhashmiss; |
in6p = in6_pcblookup_bind(&udb6, dst6, *dport, 0); |
in6p = in6_pcblookup_bind(&udb6, &dst6, dport, 0); |
if (in6p == 0) { |
if (in6p == 0) { |
#if 0 |
#if 0 |
struct mbuf *n; |
struct mbuf *n; |
n = m_copy(m, 0, M_COPYALL); |
n = m_copy(m, 0, M_COPYALL); |
switch (af) { |
switch (af) { |
case AF_INET: |
case AF_INET: |
udpstat.udps_noport++; |
|
if (m->m_flags & (M_BCAST | M_MCAST)) { |
if (m->m_flags & (M_BCAST | M_MCAST)) { |
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
|
udpstat.udps_noport++; |
if (n != NULL) |
if (n != NULL) |
icmp_error(n, ICMP_UNREACH, |
icmp_error(n, ICMP_UNREACH, |
ICMP_UNREACH_PORT, 0, 0); |
ICMP_UNREACH_PORT, 0, 0); |
break; |
break; |
case AF_INET6: |
case AF_INET6: |
udp6stat.udp6s_noport++; |
|
if (m->m_flags & M_MCAST) { |
if (m->m_flags & M_MCAST) { |
udp6stat.udp6s_noportmcast++; |
udp6stat.udp6s_noportmcast++; |
goto bad; |
goto bad; |
} |
} |
|
udp6stat.udp6s_noport++; |
if (n != NULL) |
if (n != NULL) |
icmp6_error(n, ICMP6_DST_UNREACH, |
icmp6_error(n, ICMP6_DST_UNREACH, |
ICMP6_DST_UNREACH_NOPORT, 0); |
ICMP6_DST_UNREACH_NOPORT, 0); |
|
|
} |
} |
#endif |
#endif |
|
|
#if 0 |
#else /*UDP6*/ |
|
|
void |
void |
#if __STDC__ |
#if __STDC__ |
udp_input(struct mbuf *m, ...) |
udp_input(struct mbuf *m, ...) |
Line 870 udp_input(m, va_alist) |
|
Line 931 udp_input(m, va_alist) |
|
#endif |
#endif |
{ |
{ |
int proto; |
int proto; |
register struct ip *ip; |
struct ip *ip; |
register struct udphdr *uh; |
struct udphdr *uh; |
register struct inpcb *inp; |
struct inpcb *inp; |
struct mbuf *opts = 0; |
struct mbuf *opts = 0; |
int len; |
int len; |
struct ip save_ip; |
struct ip save_ip; |
Line 912 udp_input(m, va_alist) |
|
Line 973 udp_input(m, va_alist) |
|
} |
} |
uh = (struct udphdr *)((caddr_t)ip + iphlen); |
uh = (struct udphdr *)((caddr_t)ip + iphlen); |
|
|
|
/* destination port of 0 is illegal, based on RFC768. */ |
|
if (uh->uh_dport == 0) |
|
goto bad; |
|
|
/* |
/* |
* Make mbuf data length reflect UDP length. |
* Make mbuf data length reflect UDP length. |
* If not enough data to reflect UDP length, drop. |
* If not enough data to reflect UDP length, drop. |
*/ |
*/ |
len = ntohs((u_int16_t)uh->uh_ulen); |
len = ntohs((u_int16_t)uh->uh_ulen); |
if (ip->ip_len != iphlen + len) { |
if (ip->ip_len != iphlen + len) { |
if (ip->ip_len < iphlen + len) { |
if (ip->ip_len < iphlen + len || len < sizeof(struct udphdr)) { |
udpstat.udps_badlen++; |
udpstat.udps_badlen++; |
goto bad; |
goto bad; |
} |
} |
Line 934 udp_input(m, va_alist) |
|
Line 999 udp_input(m, va_alist) |
|
* Checksum extended UDP header and data. |
* Checksum extended UDP header and data. |
*/ |
*/ |
if (uh->uh_sum) { |
if (uh->uh_sum) { |
bzero(((struct ipovly *)ip)->ih_x1, |
switch (m->m_pkthdr.csum_flags & |
sizeof ((struct ipovly *)ip)->ih_x1); |
((m->m_pkthdr.rcvif->if_csum_flags & M_CSUM_UDPv4) | |
((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
if (in_cksum(m, len + sizeof (struct ip)) != 0) { |
case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
udpstat.udps_badsum++; |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
m_freem(m); |
goto badcsum; |
return; |
|
|
case M_CSUM_UDPv4|M_CSUM_DATA: |
|
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
|
if ((m->m_pkthdr.csum_data ^ 0xffff) != 0) |
|
goto badcsum; |
|
break; |
|
|
|
case M_CSUM_UDPv4: |
|
/* Checksum was okay. */ |
|
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
|
break; |
|
|
|
default: |
|
/* Need to compute it ourselves. */ |
|
UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
|
bzero(((struct ipovly *)ip)->ih_x1, |
|
sizeof ((struct ipovly *)ip)->ih_x1); |
|
((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
|
if (in_cksum(m, len + sizeof (struct ip)) != 0) |
|
goto badcsum; |
|
break; |
} |
} |
} |
} |
|
|
Line 975 udp_input(m, va_alist) |
|
Line 1060 udp_input(m, va_alist) |
|
iphlen += sizeof(struct udphdr); |
iphlen += sizeof(struct udphdr); |
/* |
/* |
* KAME note: usually we drop udpiphdr from mbuf here. |
* KAME note: usually we drop udpiphdr from mbuf here. |
* we need udpiphdr for iPsec processing so we do that later. |
* we need udpiphdr for IPsec processing so we do that later. |
*/ |
*/ |
/* |
/* |
* Locate pcb(s) for datagram. |
* Locate pcb(s) for datagram. |
Line 1047 udp_input(m, va_alist) |
|
Line 1132 udp_input(m, va_alist) |
|
* (No need to send an ICMP Port Unreachable |
* (No need to send an ICMP Port Unreachable |
* for a broadcast or multicast datgram.) |
* for a broadcast or multicast datgram.) |
*/ |
*/ |
udpstat.udps_noport++; |
|
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
Line 1081 udp_input(m, va_alist) |
|
Line 1165 udp_input(m, va_alist) |
|
++udpstat.udps_pcbhashmiss; |
++udpstat.udps_pcbhashmiss; |
inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport); |
inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport); |
if (inp == 0) { |
if (inp == 0) { |
udpstat.udps_noport++; |
|
if (m->m_flags & (M_BCAST | M_MCAST)) { |
if (m->m_flags & (M_BCAST | M_MCAST)) { |
udpstat.udps_noportbcast++; |
udpstat.udps_noportbcast++; |
goto bad; |
goto bad; |
} |
} |
|
udpstat.udps_noport++; |
*ip = save_ip; |
*ip = save_ip; |
#if NIPKDB > 0 |
#ifdef IPKDB |
if (checkipkdb(&ip->ip_src, |
if (checkipkdb(&ip->ip_src, |
uh->uh_sport, |
uh->uh_sport, |
uh->uh_dport, |
uh->uh_dport, |
|
|
m_freem(m); |
m_freem(m); |
if (opts) |
if (opts) |
m_freem(opts); |
m_freem(opts); |
|
return; |
|
|
|
badcsum: |
|
udpstat.udps_badsum++; |
|
m_freem(m); |
} |
} |
#endif |
#endif /*UDP6*/ |
|
|
|
#ifdef INET |
/* |
/* |
* Notify a udp user of an asynchronous error; |
* Notify a udp user of an asynchronous error; |
* just wake up so that he can collect error status. |
* just wake up so that he can collect error status. |
*/ |
*/ |
static void |
static void |
udp_notify(inp, errno) |
udp_notify(inp, errno) |
register struct inpcb *inp; |
struct inpcb *inp; |
int errno; |
int errno; |
{ |
{ |
|
|
Line 1153 udp_ctlinput(cmd, sa, v) |
|
Line 1243 udp_ctlinput(cmd, sa, v) |
|
struct sockaddr *sa; |
struct sockaddr *sa; |
void *v; |
void *v; |
{ |
{ |
register struct ip *ip = v; |
struct ip *ip = v; |
register struct udphdr *uh; |
struct udphdr *uh; |
extern int inetctlerrmap[]; |
|
void (*notify) __P((struct inpcb *, int)) = udp_notify; |
void (*notify) __P((struct inpcb *, int)) = udp_notify; |
int errno; |
int errno; |
|
|
Line 1192 udp_output(m, va_alist) |
|
Line 1281 udp_output(m, va_alist) |
|
va_dcl |
va_dcl |
#endif |
#endif |
{ |
{ |
register struct inpcb *inp; |
struct inpcb *inp; |
register struct udpiphdr *ui; |
struct udpiphdr *ui; |
register int len = m->m_pkthdr.len; |
int len = m->m_pkthdr.len; |
int error = 0; |
int error = 0; |
va_list ap; |
va_list ap; |
|
|
Line 1226 udp_output(m, va_alist) |
|
Line 1315 udp_output(m, va_alist) |
|
* and addresses and length put into network format. |
* and addresses and length put into network format. |
*/ |
*/ |
ui = mtod(m, struct udpiphdr *); |
ui = mtod(m, struct udpiphdr *); |
bzero(ui->ui_x1, sizeof ui->ui_x1); |
|
ui->ui_pr = IPPROTO_UDP; |
ui->ui_pr = IPPROTO_UDP; |
ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr)); |
|
ui->ui_src = inp->inp_laddr; |
ui->ui_src = inp->inp_laddr; |
ui->ui_dst = inp->inp_faddr; |
ui->ui_dst = inp->inp_faddr; |
ui->ui_sport = inp->inp_lport; |
ui->ui_sport = inp->inp_lport; |
ui->ui_dport = inp->inp_fport; |
ui->ui_dport = inp->inp_fport; |
ui->ui_ulen = ui->ui_len; |
ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); |
|
|
/* |
/* |
* Stuff checksum and output datagram. |
* Set up checksum and output datagram. |
*/ |
*/ |
ui->ui_sum = 0; |
|
if (udpcksum) { |
if (udpcksum) { |
if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0) |
/* |
ui->ui_sum = 0xffff; |
* XXX Cache pseudo-header checksum part for |
} |
* XXX "connected" UDP sockets. |
|
*/ |
|
ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, |
|
ui->ui_dst.s_addr, htons((u_int16_t)len + |
|
sizeof(struct udphdr) + IPPROTO_UDP)); |
|
m->m_pkthdr.csum_flags = M_CSUM_UDPv4; |
|
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); |
|
} else |
|
ui->ui_sum = 0; |
((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len; |
((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len; |
((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
udpstat.udps_opackets++; |
udpstat.udps_opackets++; |
|
|
#ifdef IPSEC |
#ifdef IPSEC |
m->m_pkthdr.rcvif = (struct ifnet *)inp->inp_socket; |
if (ipsec_setsocket(m, inp->inp_socket) != 0) { |
|
error = ENOBUFS; |
|
goto release; |
|
} |
#endif /*IPSEC*/ |
#endif /*IPSEC*/ |
|
|
return (ip_output(m, inp->inp_options, &inp->inp_route, |
return (ip_output(m, inp->inp_options, &inp->inp_route, |
Line 1273 udp_usrreq(so, req, m, nam, control, p) |
|
Line 1370 udp_usrreq(so, req, m, nam, control, p) |
|
struct mbuf *m, *nam, *control; |
struct mbuf *m, *nam, *control; |
struct proc *p; |
struct proc *p; |
{ |
{ |
register struct inpcb *inp; |
struct inpcb *inp; |
int s; |
int s; |
register int error = 0; |
int error = 0; |
|
|
if (req == PRU_CONTROL) |
if (req == PRU_CONTROL) |
return (in_control(so, (long)m, (caddr_t)nam, |
return (in_control(so, (long)m, (caddr_t)nam, |
(struct ifnet *)control, p)); |
(struct ifnet *)control, p)); |
|
|
|
if (req == PRU_PURGEIF) { |
|
in_pcbpurgeif0(&udbtable, (struct ifnet *)control); |
|
in_purgeif((struct ifnet *)control); |
|
in_pcbpurgeif(&udbtable, (struct ifnet *)control); |
|
return (0); |
|
} |
|
|
s = splsoftnet(); |
s = splsoftnet(); |
inp = sotoinpcb(so); |
inp = sotoinpcb(so); |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
Line 1314 udp_usrreq(so, req, m, nam, control, p) |
|
Line 1418 udp_usrreq(so, req, m, nam, control, p) |
|
inp = sotoinpcb(so); |
inp = sotoinpcb(so); |
inp->inp_ip.ip_ttl = ip_defttl; |
inp->inp_ip.ip_ttl = ip_defttl; |
#ifdef IPSEC |
#ifdef IPSEC |
error = ipsec_init_policy(&inp->inp_sp); |
error = ipsec_init_policy(so, &inp->inp_sp); |
if (error != 0) { |
if (error != 0) { |
in_pcbdetach(inp); |
in_pcbdetach(inp); |
break; |
break; |
Line 1462 udp_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1566 udp_sysctl(name, namelen, oldp, oldlenp, |
|
} |
} |
/* NOTREACHED */ |
/* NOTREACHED */ |
} |
} |
|
#endif |