Continue effort to align UDPv4 and UDPv6 implementations by merging
udp6_output() from udp6_output.c to udp6_usrreq.c, matching the UDPv4 structure, and allowing us to remove udp6_output.c. Reviewed by: bz, gnn Approved by: re (bmah)
This commit is contained in:
Robert Watson
parent
4eb3abf0a5
commit
8136d21ec0
sys
@ -1912,7 +1912,6 @@ netinet6/raw_ip6.c optional inet6
|
||||
netinet6/route6.c optional inet6
|
||||
netinet6/scope6.c optional inet6
|
||||
netinet6/sctp6_usrreq.c optional inet6 sctp
|
||||
netinet6/udp6_output.c optional inet6
|
||||
netinet6/udp6_usrreq.c optional inet6
|
||||
netipsec/ipsec.c optional ipsec
|
||||
netipsec/ipsec_input.c optional ipsec
|
||||
|
||||
@ -1,330 +0,0 @@
|
||||
/* $FreeBSD$ */
|
||||
/* $KAME: udp6_output.c,v 1.31 2001/05/21 16:39:15 jinmei Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 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
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1982, 1986, 1989, 1993
|
||||
* The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
|
||||
*/
|
||||
|
||||
#include "opt_ipsec.h"
|
||||
#include "opt_inet.h"
|
||||
#include "opt_inet6.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/mbuf.h>
|
||||
#include <sys/priv.h>
|
||||
#include <sys/protosw.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/socketvar.h>
|
||||
#include <sys/sysctl.h>
|
||||
#include <sys/errno.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/syslog.h>
|
||||
|
||||
#include <net/if.h>
|
||||
#include <net/route.h>
|
||||
#include <net/if_types.h>
|
||||
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/in_var.h>
|
||||
#include <netinet/in_systm.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <netinet/ip_var.h>
|
||||
#include <netinet/in_pcb.h>
|
||||
#include <netinet/udp.h>
|
||||
#include <netinet/udp_var.h>
|
||||
#include <netinet/ip6.h>
|
||||
#include <netinet6/ip6_var.h>
|
||||
#include <netinet6/in6_pcb.h>
|
||||
#include <netinet6/udp6_var.h>
|
||||
#include <netinet/icmp6.h>
|
||||
#include <netinet6/ip6protosw.h>
|
||||
#include <netinet6/scope6_var.h>
|
||||
|
||||
/*
|
||||
* UDP protocol inplementation.
|
||||
* Per RFC 768, August, 1980.
|
||||
*/
|
||||
|
||||
#define in6pcb inpcb
|
||||
#define udp6stat udpstat
|
||||
#define udp6s_opackets udps_opackets
|
||||
|
||||
int
|
||||
udp6_output(struct in6pcb *in6p, struct mbuf *m, struct sockaddr *addr6,
|
||||
struct mbuf *control, struct thread *td)
|
||||
{
|
||||
u_int32_t ulen = m->m_pkthdr.len;
|
||||
u_int32_t plen = sizeof(struct udphdr) + ulen;
|
||||
struct ip6_hdr *ip6;
|
||||
struct udphdr *udp6;
|
||||
struct in6_addr *laddr, *faddr;
|
||||
struct sockaddr_in6 *sin6 = NULL;
|
||||
struct ifnet *oifp = NULL;
|
||||
int scope_ambiguous = 0;
|
||||
u_short fport;
|
||||
int error = 0;
|
||||
struct ip6_pktopts *optp, opt;
|
||||
int priv;
|
||||
int af = AF_INET6, hlen = sizeof(struct ip6_hdr);
|
||||
int flags;
|
||||
struct sockaddr_in6 tmp;
|
||||
|
||||
INP_LOCK_ASSERT(in6p);
|
||||
|
||||
priv = 0;
|
||||
if (td && !suser(td))
|
||||
priv = 1;
|
||||
|
||||
if (addr6) {
|
||||
/* addr6 has been validated in udp6_send(). */
|
||||
sin6 = (struct sockaddr_in6 *)addr6;
|
||||
|
||||
/* protect *sin6 from overwrites */
|
||||
tmp = *sin6;
|
||||
sin6 = &tmp;
|
||||
|
||||
/*
|
||||
* Application should provide a proper zone ID or the use of
|
||||
* default zone IDs should be enabled. Unfortunately, some
|
||||
* applications do not behave as it should, so we need a
|
||||
* workaround. Even if an appropriate ID is not determined,
|
||||
* we'll see if we can determine the outgoing interface. If we
|
||||
* can, determine the zone ID based on the interface below.
|
||||
*/
|
||||
if (sin6->sin6_scope_id == 0 && !ip6_use_defzone)
|
||||
scope_ambiguous = 1;
|
||||
if ((error = sa6_embedscope(sin6, ip6_use_defzone)) != 0)
|
||||
return (error);
|
||||
}
|
||||
|
||||
if (control) {
|
||||
if ((error = ip6_setpktopts(control, &opt,
|
||||
in6p->in6p_outputopts, priv, IPPROTO_UDP)) != 0)
|
||||
goto release;
|
||||
optp = &opt;
|
||||
} else
|
||||
optp = in6p->in6p_outputopts;
|
||||
|
||||
if (sin6) {
|
||||
faddr = &sin6->sin6_addr;
|
||||
|
||||
/*
|
||||
* IPv4 version of udp_output calls in_pcbconnect in this case,
|
||||
* which needs splnet and affects performance.
|
||||
* Since we saw no essential reason for calling in_pcbconnect,
|
||||
* we get rid of such kind of logic, and call in6_selectsrc
|
||||
* and in6_pcbsetport in order to fill in the local address
|
||||
* and the local port.
|
||||
*/
|
||||
if (sin6->sin6_port == 0) {
|
||||
error = EADDRNOTAVAIL;
|
||||
goto release;
|
||||
}
|
||||
|
||||
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
||||
/* how about ::ffff:0.0.0.0 case? */
|
||||
error = EISCONN;
|
||||
goto release;
|
||||
}
|
||||
|
||||
fport = sin6->sin6_port; /* allow 0 port */
|
||||
|
||||
if (IN6_IS_ADDR_V4MAPPED(faddr)) {
|
||||
if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) {
|
||||
/*
|
||||
* I believe we should explicitly discard the
|
||||
* packet when mapped addresses are disabled,
|
||||
* rather than send the packet as an IPv6 one.
|
||||
* If we chose the latter approach, the packet
|
||||
* might be sent out on the wire based on the
|
||||
* default route, the situation which we'd
|
||||
* probably want to avoid.
|
||||
* (20010421 jinmei@kame.net)
|
||||
*/
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
}
|
||||
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
|
||||
!IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) {
|
||||
/*
|
||||
* when remote addr is an IPv4-mapped address,
|
||||
* local addr should not be an IPv6 address,
|
||||
* since you cannot determine how to map IPv6
|
||||
* source address to IPv4.
|
||||
*/
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
}
|
||||
|
||||
af = AF_INET;
|
||||
}
|
||||
|
||||
if (!IN6_IS_ADDR_V4MAPPED(faddr)) {
|
||||
laddr = in6_selectsrc(sin6, optp, in6p->in6p_moptions,
|
||||
NULL, &in6p->in6p_laddr, &oifp, &error);
|
||||
if (oifp && scope_ambiguous &&
|
||||
(error = in6_setscope(&sin6->sin6_addr,
|
||||
oifp, NULL))) {
|
||||
goto release;
|
||||
}
|
||||
} else
|
||||
laddr = &in6p->in6p_laddr; /* XXX */
|
||||
if (laddr == NULL) {
|
||||
if (error == 0)
|
||||
error = EADDRNOTAVAIL;
|
||||
goto release;
|
||||
}
|
||||
if (in6p->in6p_lport == 0 &&
|
||||
(error = in6_pcbsetport(laddr, in6p, td->td_ucred)) != 0)
|
||||
goto release;
|
||||
} else {
|
||||
if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
||||
error = ENOTCONN;
|
||||
goto release;
|
||||
}
|
||||
if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) {
|
||||
if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) {
|
||||
/*
|
||||
* XXX: this case would happen when the
|
||||
* application sets the V6ONLY flag after
|
||||
* connecting the foreign address.
|
||||
* Such applications should be fixed,
|
||||
* so we bark here.
|
||||
*/
|
||||
log(LOG_INFO, "udp6_output: IPV6_V6ONLY "
|
||||
"option was set for a connected socket\n");
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
} else
|
||||
af = AF_INET;
|
||||
}
|
||||
laddr = &in6p->in6p_laddr;
|
||||
faddr = &in6p->in6p_faddr;
|
||||
fport = in6p->in6p_fport;
|
||||
}
|
||||
|
||||
if (af == AF_INET)
|
||||
hlen = sizeof(struct ip);
|
||||
|
||||
/*
|
||||
* Calculate data length and get a mbuf
|
||||
* for UDP and IP6 headers.
|
||||
*/
|
||||
M_PREPEND(m, hlen + sizeof(struct udphdr), M_DONTWAIT);
|
||||
if (m == 0) {
|
||||
error = ENOBUFS;
|
||||
goto release;
|
||||
}
|
||||
|
||||
/*
|
||||
* Stuff checksum and output datagram.
|
||||
*/
|
||||
udp6 = (struct udphdr *)(mtod(m, caddr_t) + hlen);
|
||||
udp6->uh_sport = in6p->in6p_lport; /* lport is always set in the PCB */
|
||||
udp6->uh_dport = fport;
|
||||
if (plen <= 0xffff)
|
||||
udp6->uh_ulen = htons((u_short)plen);
|
||||
else
|
||||
udp6->uh_ulen = 0;
|
||||
udp6->uh_sum = 0;
|
||||
|
||||
switch (af) {
|
||||
case AF_INET6:
|
||||
ip6 = mtod(m, struct ip6_hdr *);
|
||||
ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
|
||||
ip6->ip6_vfc &= ~IPV6_VERSION_MASK;
|
||||
ip6->ip6_vfc |= IPV6_VERSION;
|
||||
#if 0 /* ip6_plen will be filled in ip6_output. */
|
||||
ip6->ip6_plen = htons((u_short)plen);
|
||||
#endif
|
||||
ip6->ip6_nxt = IPPROTO_UDP;
|
||||
ip6->ip6_hlim = in6_selecthlim(in6p, NULL);
|
||||
ip6->ip6_src = *laddr;
|
||||
ip6->ip6_dst = *faddr;
|
||||
|
||||
if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP,
|
||||
sizeof(struct ip6_hdr), plen)) == 0) {
|
||||
udp6->uh_sum = 0xffff;
|
||||
}
|
||||
|
||||
flags = 0;
|
||||
|
||||
udp6stat.udp6s_opackets++;
|
||||
error = ip6_output(m, optp, NULL, flags, in6p->in6p_moptions,
|
||||
NULL, in6p);
|
||||
break;
|
||||
case AF_INET:
|
||||
error = EAFNOSUPPORT;
|
||||
goto release;
|
||||
}
|
||||
goto releaseopt;
|
||||
|
||||
release:
|
||||
m_freem(m);
|
||||
|
||||
releaseopt:
|
||||
if (control) {
|
||||
ip6_clearpktopts(&opt, -1);
|
||||
m_freem(control);
|
||||
}
|
||||
return (error);
|
||||
}
|
||||
@ -1,5 +1,6 @@
|
||||
/* $FreeBSD$ */
|
||||
/* $KAME: udp6_usrreq.c,v 1.27 2001/05/21 05:45:10 jinmei Exp $ */
|
||||
/* $KAME: udp6_output.c,v 1.31 2001/05/21 16:39:15 jinmei Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
||||
@ -468,6 +469,231 @@ udp6_getcred(SYSCTL_HANDLER_ARGS)
|
||||
SYSCTL_PROC(_net_inet6_udp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 0,
|
||||
0, udp6_getcred, "S,xucred", "Get the xucred of a UDP6 connection");
|
||||
|
||||
#define in6pcb inpcb
|
||||
#define udp6stat udpstat
|
||||
#define udp6s_opackets udps_opackets
|
||||
|
||||
static int
|
||||
udp6_output(struct in6pcb *in6p, struct mbuf *m, struct sockaddr *addr6,
|
||||
struct mbuf *control, struct thread *td)
|
||||
{
|
||||
u_int32_t ulen = m->m_pkthdr.len;
|
||||
u_int32_t plen = sizeof(struct udphdr) + ulen;
|
||||
struct ip6_hdr *ip6;
|
||||
struct udphdr *udp6;
|
||||
struct in6_addr *laddr, *faddr;
|
||||
struct sockaddr_in6 *sin6 = NULL;
|
||||
struct ifnet *oifp = NULL;
|
||||
int scope_ambiguous = 0;
|
||||
u_short fport;
|
||||
int error = 0;
|
||||
struct ip6_pktopts *optp, opt;
|
||||
int priv;
|
||||
int af = AF_INET6, hlen = sizeof(struct ip6_hdr);
|
||||
int flags;
|
||||
struct sockaddr_in6 tmp;
|
||||
|
||||
INP_LOCK_ASSERT(in6p);
|
||||
|
||||
priv = 0;
|
||||
if (td && !suser(td))
|
||||
priv = 1;
|
||||
|
||||
if (addr6) {
|
||||
/* addr6 has been validated in udp6_send(). */
|
||||
sin6 = (struct sockaddr_in6 *)addr6;
|
||||
|
||||
/* protect *sin6 from overwrites */
|
||||
tmp = *sin6;
|
||||
sin6 = &tmp;
|
||||
|
||||
/*
|
||||
* Application should provide a proper zone ID or the use of
|
||||
* default zone IDs should be enabled. Unfortunately, some
|
||||
* applications do not behave as it should, so we need a
|
||||
* workaround. Even if an appropriate ID is not determined,
|
||||
* we'll see if we can determine the outgoing interface. If we
|
||||
* can, determine the zone ID based on the interface below.
|
||||
*/
|
||||
if (sin6->sin6_scope_id == 0 && !ip6_use_defzone)
|
||||
scope_ambiguous = 1;
|
||||
if ((error = sa6_embedscope(sin6, ip6_use_defzone)) != 0)
|
||||
return (error);
|
||||
}
|
||||
|
||||
if (control) {
|
||||
if ((error = ip6_setpktopts(control, &opt,
|
||||
in6p->in6p_outputopts, priv, IPPROTO_UDP)) != 0)
|
||||
goto release;
|
||||
optp = &opt;
|
||||
} else
|
||||
optp = in6p->in6p_outputopts;
|
||||
|
||||
if (sin6) {
|
||||
faddr = &sin6->sin6_addr;
|
||||
|
||||
/*
|
||||
* IPv4 version of udp_output calls in_pcbconnect in this case,
|
||||
* which needs splnet and affects performance.
|
||||
* Since we saw no essential reason for calling in_pcbconnect,
|
||||
* we get rid of such kind of logic, and call in6_selectsrc
|
||||
* and in6_pcbsetport in order to fill in the local address
|
||||
* and the local port.
|
||||
*/
|
||||
if (sin6->sin6_port == 0) {
|
||||
error = EADDRNOTAVAIL;
|
||||
goto release;
|
||||
}
|
||||
|
||||
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
||||
/* how about ::ffff:0.0.0.0 case? */
|
||||
error = EISCONN;
|
||||
goto release;
|
||||
}
|
||||
|
||||
fport = sin6->sin6_port; /* allow 0 port */
|
||||
|
||||
if (IN6_IS_ADDR_V4MAPPED(faddr)) {
|
||||
if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) {
|
||||
/*
|
||||
* I believe we should explicitly discard the
|
||||
* packet when mapped addresses are disabled,
|
||||
* rather than send the packet as an IPv6 one.
|
||||
* If we chose the latter approach, the packet
|
||||
* might be sent out on the wire based on the
|
||||
* default route, the situation which we'd
|
||||
* probably want to avoid.
|
||||
* (20010421 jinmei@kame.net)
|
||||
*/
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
}
|
||||
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
|
||||
!IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) {
|
||||
/*
|
||||
* when remote addr is an IPv4-mapped address,
|
||||
* local addr should not be an IPv6 address,
|
||||
* since you cannot determine how to map IPv6
|
||||
* source address to IPv4.
|
||||
*/
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
}
|
||||
|
||||
af = AF_INET;
|
||||
}
|
||||
|
||||
if (!IN6_IS_ADDR_V4MAPPED(faddr)) {
|
||||
laddr = in6_selectsrc(sin6, optp, in6p->in6p_moptions,
|
||||
NULL, &in6p->in6p_laddr, &oifp, &error);
|
||||
if (oifp && scope_ambiguous &&
|
||||
(error = in6_setscope(&sin6->sin6_addr,
|
||||
oifp, NULL))) {
|
||||
goto release;
|
||||
}
|
||||
} else
|
||||
laddr = &in6p->in6p_laddr; /* XXX */
|
||||
if (laddr == NULL) {
|
||||
if (error == 0)
|
||||
error = EADDRNOTAVAIL;
|
||||
goto release;
|
||||
}
|
||||
if (in6p->in6p_lport == 0 &&
|
||||
(error = in6_pcbsetport(laddr, in6p, td->td_ucred)) != 0)
|
||||
goto release;
|
||||
} else {
|
||||
if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
||||
error = ENOTCONN;
|
||||
goto release;
|
||||
}
|
||||
if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) {
|
||||
if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) {
|
||||
/*
|
||||
* XXX: this case would happen when the
|
||||
* application sets the V6ONLY flag after
|
||||
* connecting the foreign address.
|
||||
* Such applications should be fixed,
|
||||
* so we bark here.
|
||||
*/
|
||||
log(LOG_INFO, "udp6_output: IPV6_V6ONLY "
|
||||
"option was set for a connected socket\n");
|
||||
error = EINVAL;
|
||||
goto release;
|
||||
} else
|
||||
af = AF_INET;
|
||||
}
|
||||
laddr = &in6p->in6p_laddr;
|
||||
faddr = &in6p->in6p_faddr;
|
||||
fport = in6p->in6p_fport;
|
||||
}
|
||||
|
||||
if (af == AF_INET)
|
||||
hlen = sizeof(struct ip);
|
||||
|
||||
/*
|
||||
* Calculate data length and get a mbuf
|
||||
* for UDP and IP6 headers.
|
||||
*/
|
||||
M_PREPEND(m, hlen + sizeof(struct udphdr), M_DONTWAIT);
|
||||
if (m == 0) {
|
||||
error = ENOBUFS;
|
||||
goto release;
|
||||
}
|
||||
|
||||
/*
|
||||
* Stuff checksum and output datagram.
|
||||
*/
|
||||
udp6 = (struct udphdr *)(mtod(m, caddr_t) + hlen);
|
||||
udp6->uh_sport = in6p->in6p_lport; /* lport is always set in the PCB */
|
||||
udp6->uh_dport = fport;
|
||||
if (plen <= 0xffff)
|
||||
udp6->uh_ulen = htons((u_short)plen);
|
||||
else
|
||||
udp6->uh_ulen = 0;
|
||||
udp6->uh_sum = 0;
|
||||
|
||||
switch (af) {
|
||||
case AF_INET6:
|
||||
ip6 = mtod(m, struct ip6_hdr *);
|
||||
ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
|
||||
ip6->ip6_vfc &= ~IPV6_VERSION_MASK;
|
||||
ip6->ip6_vfc |= IPV6_VERSION;
|
||||
#if 0 /* ip6_plen will be filled in ip6_output. */
|
||||
ip6->ip6_plen = htons((u_short)plen);
|
||||
#endif
|
||||
ip6->ip6_nxt = IPPROTO_UDP;
|
||||
ip6->ip6_hlim = in6_selecthlim(in6p, NULL);
|
||||
ip6->ip6_src = *laddr;
|
||||
ip6->ip6_dst = *faddr;
|
||||
|
||||
if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP,
|
||||
sizeof(struct ip6_hdr), plen)) == 0) {
|
||||
udp6->uh_sum = 0xffff;
|
||||
}
|
||||
|
||||
flags = 0;
|
||||
|
||||
udp6stat.udp6s_opackets++;
|
||||
error = ip6_output(m, optp, NULL, flags, in6p->in6p_moptions,
|
||||
NULL, in6p);
|
||||
break;
|
||||
case AF_INET:
|
||||
error = EAFNOSUPPORT;
|
||||
goto release;
|
||||
}
|
||||
goto releaseopt;
|
||||
|
||||
release:
|
||||
m_freem(m);
|
||||
|
||||
releaseopt:
|
||||
if (control) {
|
||||
ip6_clearpktopts(&opt, -1);
|
||||
m_freem(control);
|
||||
}
|
||||
return (error);
|
||||
}
|
||||
|
||||
static void
|
||||
udp6_abort(struct socket *so)
|
||||
{
|
||||
|
||||
@ -71,8 +71,6 @@ extern struct pr_usrreqs udp6_usrreqs;
|
||||
|
||||
void udp6_ctlinput(int, struct sockaddr *, void *);
|
||||
int udp6_input(struct mbuf **, int *, int);
|
||||
int udp6_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
|
||||
struct mbuf *control, struct thread *td);
|
||||
#endif
|
||||
|
||||
#endif /*_NETINET6_UDP6_VAR_H_*/
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user