version 1.86, 2001/10/24 06:04:08 |
version 1.97, 2003/01/20 00:05:46 |
|
|
/* |
/* |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* All rights reserved. |
* All rights reserved. |
* |
* |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* modification, are permitted provided that the following conditions |
* are met: |
* are met: |
|
|
* 3. Neither the name of the project nor the names of its contributors |
* 3. Neither the name of the project nor the names of its contributors |
* may be used to endorse or promote products derived from this software |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* without specific prior written permission. |
* |
* |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|
|
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 |
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 |
*/ |
*/ |
|
|
|
#include <sys/cdefs.h> |
|
__KERNEL_RCSID(0, "$NetBSD$"); |
|
|
#include "opt_inet.h" |
#include "opt_inet.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_inet_csum.h" |
#include "opt_inet_csum.h" |
|
|
#include <sys/systm.h> |
#include <sys/systm.h> |
#include <sys/proc.h> |
#include <sys/proc.h> |
#include <sys/domain.h> |
#include <sys/domain.h> |
|
|
#include <uvm/uvm_extern.h> |
|
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
|
|
#include <net/if.h> |
#include <net/if.h> |
Line 138 int udpcksum = 1; |
|
Line 139 int udpcksum = 1; |
|
int udpcksum = 0; /* XXX */ |
int udpcksum = 0; /* XXX */ |
#endif |
#endif |
|
|
|
struct inpcbtable udbtable; |
|
struct udpstat udpstat; |
|
|
#ifdef INET |
#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 *)); |
Line 147 static int udp4_realinput __P((struct so |
|
Line 151 static int udp4_realinput __P((struct so |
|
#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 *)); |
static int in6_mcmatch __P((struct in6pcb *, struct in6_addr *, |
|
struct ifnet *)); |
|
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 |
Line 211 udp_input(m, va_alist) |
|
Line 213 udp_input(m, va_alist) |
|
struct sockaddr_in src, dst; |
struct sockaddr_in src, dst; |
struct ip *ip; |
struct ip *ip; |
struct udphdr *uh; |
struct udphdr *uh; |
int iphlen, proto; |
int iphlen; |
int len; |
int len; |
int n; |
int n; |
|
u_int16_t ip_len; |
|
|
va_start(ap, m); |
va_start(ap, m); |
iphlen = va_arg(ap, int); |
iphlen = va_arg(ap, int); |
proto = va_arg(ap, int); |
(void)va_arg(ap, int); /* ignore value, advance ap */ |
va_end(ap); |
va_end(ap); |
|
|
udpstat.udps_ipackets++; |
udpstat.udps_ipackets++; |
Line 260 udp_input(m, va_alist) |
|
Line 263 udp_input(m, va_alist) |
|
return; |
return; |
} |
} |
#endif |
#endif |
|
KASSERT(UDP_HDR_ALIGNED_P(uh)); |
|
|
/* destination port of 0 is illegal, based on RFC768. */ |
/* destination port of 0 is illegal, based on RFC768. */ |
if (uh->uh_dport == 0) |
if (uh->uh_dport == 0) |
Line 269 udp_input(m, va_alist) |
|
Line 273 udp_input(m, va_alist) |
|
* 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. |
*/ |
*/ |
|
ip_len = ntohs(ip->ip_len); |
len = ntohs((u_int16_t)uh->uh_ulen); |
len = ntohs((u_int16_t)uh->uh_ulen); |
if (ip->ip_len != iphlen + len) { |
if (ip_len != iphlen + len) { |
if (ip->ip_len < iphlen + len || len < sizeof(struct udphdr)) { |
if (ip_len < iphlen + len || len < sizeof(struct udphdr)) { |
udpstat.udps_badlen++; |
udpstat.udps_badlen++; |
goto bad; |
goto bad; |
} |
} |
m_adj(m, iphlen + len - ip->ip_len); |
m_adj(m, iphlen + len - ip_len); |
} |
} |
|
|
/* |
/* |
Line 416 udp6_input(mp, offp, proto) |
|
Line 421 udp6_input(mp, offp, proto) |
|
return IPPROTO_DONE; |
return IPPROTO_DONE; |
} |
} |
#endif |
#endif |
|
KASSERT(UDP_HDR_ALIGNED_P(uh)); |
ulen = ntohs((u_short)uh->uh_ulen); |
ulen = ntohs((u_short)uh->uh_ulen); |
/* |
/* |
* RFC2675 section 4: jumbograms will have 0 in the UDP header field, |
* RFC2675 section 4: jumbograms will have 0 in the UDP header field, |
Line 495 udp4_sendup(m, off, src, so) |
|
Line 501 udp4_sendup(m, off, src, so) |
|
struct mbuf *opts = NULL; |
struct mbuf *opts = NULL; |
struct mbuf *n; |
struct mbuf *n; |
struct inpcb *inp = NULL; |
struct inpcb *inp = NULL; |
#ifdef INET6 |
|
struct in6pcb *in6p = NULL; |
|
#endif |
|
|
|
if (!so) |
if (!so) |
return; |
return; |
Line 507 udp4_sendup(m, off, src, so) |
|
Line 510 udp4_sendup(m, off, src, so) |
|
break; |
break; |
#ifdef INET6 |
#ifdef INET6 |
case AF_INET6: |
case AF_INET6: |
in6p = sotoin6pcb(so); |
|
break; |
break; |
#endif |
#endif |
default: |
default: |
Line 613 udp4_realinput(src, dst, m, off) |
|
Line 615 udp4_realinput(src, dst, m, off) |
|
|
|
if (IN_MULTICAST(dst4->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; |
|
/* |
/* |
* Deliver a multicast or broadcast datagram to *all* sockets |
* Deliver a multicast or broadcast datagram to *all* sockets |
* for which the local and remote addresses and ports match |
* for which the local and remote addresses and ports match |
Line 631 udp4_realinput(src, dst, m, off) |
|
Line 632 udp4_realinput(src, dst, m, off) |
|
*/ |
*/ |
|
|
/* |
/* |
* KAME note: usually we drop udpiphdr from mbuf here. |
* KAME note: traditionally we dropped 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 (inp = udbtable.inpt_queue.cqh_first; |
CIRCLEQ_FOREACH(inp, &udbtable.inpt_queue, inp_queue) { |
inp != (struct inpcb *)&udbtable.inpt_queue; |
|
inp = inp->inp_queue.cqe_next) { |
|
if (inp->inp_lport != *dport) |
if (inp->inp_lport != *dport) |
continue; |
continue; |
if (!in_nullhost(inp->inp_laddr)) { |
if (!in_nullhost(inp->inp_laddr)) { |
Line 652 udp4_realinput(src, dst, m, off) |
|
Line 651 udp4_realinput(src, dst, m, off) |
|
continue; |
continue; |
} |
} |
|
|
last = inp; |
|
udp4_sendup(m, off, (struct sockaddr *)src, |
udp4_sendup(m, off, (struct sockaddr *)src, |
inp->inp_socket); |
inp->inp_socket); |
rcvcnt++; |
rcvcnt++; |
|
|
|
|
#ifdef INET6 |
#ifdef INET6 |
static int |
static int |
in6_mcmatch(in6p, ia6, ifp) |
|
struct in6pcb *in6p; |
|
struct in6_addr *ia6; |
|
struct ifnet *ifp; |
|
{ |
|
struct ip6_moptions *im6o = in6p->in6p_moptions; |
|
struct in6_multi_mship *imm; |
|
|
|
if (im6o == NULL) |
|
return 0; |
|
|
|
for (imm = im6o->im6o_memberships.lh_first; imm != NULL; |
|
imm = imm->i6mm_chain.le_next) { |
|
if ((ifp == NULL || |
|
imm->i6mm_maddr->in6m_ifp == ifp) && |
|
IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr, |
|
ia6)) |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
static int |
|
udp6_realinput(af, src, dst, m, off) |
udp6_realinput(af, src, dst, m, off) |
int af; /* af on packet */ |
int af; /* af on packet */ |
struct sockaddr_in6 *src; |
struct sockaddr_in6 *src; |
Line 740 udp6_realinput(af, src, dst, m, off) |
|
Line 715 udp6_realinput(af, src, dst, m, off) |
|
sport = src->sin6_port; |
sport = src->sin6_port; |
in6_embedscope(&dst6, dst, NULL, NULL); |
in6_embedscope(&dst6, dst, NULL, NULL); |
dport = dst->sin6_port; |
dport = dst->sin6_port; |
dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr32[12]; |
dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12]; |
|
|
if (IN6_IS_ADDR_MULTICAST(&dst6) || |
if (IN6_IS_ADDR_MULTICAST(&dst6) || |
(af == AF_INET && IN_MULTICAST(dst4->s_addr))) { |
(af == AF_INET && IN_MULTICAST(dst4->s_addr))) { |
struct in6pcb *last; |
|
/* |
/* |
* Deliver a multicast or broadcast datagram to *all* sockets |
* Deliver a multicast or broadcast datagram to *all* sockets |
* for which the local and remote addresses and ports match |
* for which the local and remote addresses and ports match |
Line 762 udp6_realinput(af, src, dst, m, off) |
|
Line 736 udp6_realinput(af, src, dst, m, off) |
|
*/ |
*/ |
|
|
/* |
/* |
* KAME note: usually we drop udpiphdr from mbuf here. |
* KAME note: traditionally we dropped 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. |
*/ |
*/ |
/* |
/* |
Line 773 udp6_realinput(af, src, dst, m, off) |
|
Line 747 udp6_realinput(af, src, dst, m, off) |
|
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)) |
|
continue; |
continue; |
} |
} else { |
else { |
|
if (IN6_IS_ADDR_V4MAPPED(&dst6) && |
if (IN6_IS_ADDR_V4MAPPED(&dst6) && |
(in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
(in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
continue; |
continue; |
Line 786 udp6_realinput(af, src, dst, m, off) |
|
Line 758 udp6_realinput(af, src, dst, m, off) |
|
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, |
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, |
&src6) || in6p->in6p_fport != sport) |
&src6) || in6p->in6p_fport != sport) |
continue; |
continue; |
} |
} else { |
else { |
|
if (IN6_IS_ADDR_V4MAPPED(&src6) && |
if (IN6_IS_ADDR_V4MAPPED(&src6) && |
(in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
(in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
continue; |
continue; |
} |
} |
|
|
last = in6p; |
|
udp6_sendup(m, off, (struct sockaddr *)src, |
udp6_sendup(m, off, (struct sockaddr *)src, |
in6p->in6p_socket); |
in6p->in6p_socket); |
rcvcnt++; |
rcvcnt++; |
Line 916 udp_output(m, va_alist) |
|
Line 886 udp_output(m, va_alist) |
|
* Compute the packet length of the IP header, and |
* Compute the packet length of the IP header, and |
* punt if the length looks bogus. |
* punt if the length looks bogus. |
*/ |
*/ |
if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) { |
if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { |
error = EMSGSIZE; |
error = EMSGSIZE; |
goto release; |
goto release; |
} |
} |
Line 948 udp_output(m, va_alist) |
|
Line 918 udp_output(m, va_alist) |
|
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); |
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); |
} else |
} else |
ui->ui_sum = 0; |
ui->ui_sum = 0; |
((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len; |
((struct ip *)ui)->ip_len = htons(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++; |
Line 1163 udp_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1133 udp_sysctl(name, namelen, oldp, oldlenp, |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
&udp_sendspace)); |
&udp_sendspace)); |
case UDPCTL_RECVSPACE: |
case UDPCTL_RECVSPACE: |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
&udp_recvspace)); |
&udp_recvspace)); |
default: |
default: |
return (ENOPROTOOPT); |
return (ENOPROTOOPT); |