#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/mcache.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/socketvar.h>
#include <sys/errno.h>
#include <sys/systm.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/in_tclass.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet/icmp6.h>
#include <netinet/in_pcb.h>
#include <netinet6/in6_pcb.h>
#include <netinet6/nd6.h>
#include <netinet6/ip6protosw.h>
#include <netinet6/scope6_var.h>
#include <netinet6/raw_ip6.h>
#if IPSEC
#include <netinet6/ipsec.h>
#include <netinet6/ipsec6.h>
#endif
#if NECP
#include <net/necp.h>
#endif
extern struct inpcbhead ripcb;
extern struct inpcbinfo ripcbinfo;
extern u_int32_t rip_sendspace;
extern u_int32_t rip_recvspace;
struct rip6stat rip6stat;
int
rip6_input(
struct mbuf **mp,
int *offp,
int proto)
{
struct mbuf *m = *mp;
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
struct inpcb *in6p;
struct inpcb *last = 0;
struct mbuf *opts = NULL;
struct sockaddr_in6 rip6src;
int ret;
struct ifnet *ifp = m->m_pkthdr.rcvif;
MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
rip6stat.rip6s_ipackets++;
init_sin6(&rip6src, m);
lck_rw_lock_shared(ripcbinfo.ipi_lock);
LIST_FOREACH(in6p, &ripcb, inp_list) {
if ((in6p->in6p_vflag & INP_IPV6) == 0)
continue;
if (in6p->in6p_ip6_nxt &&
in6p->in6p_ip6_nxt != proto)
continue;
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
continue;
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
continue;
if (inp_restricted_recv(in6p, ifp))
continue;
if (proto == IPPROTO_ICMPV6 || in6p->in6p_cksum != -1) {
rip6stat.rip6s_isum++;
if (in6_cksum(m, ip6->ip6_nxt, *offp,
m->m_pkthdr.len - *offp)) {
rip6stat.rip6s_badsum++;
continue;
}
}
if (last) {
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
#if NECP
if (n && !necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
&ip6->ip6_dst, &ip6->ip6_src, ifp, NULL, NULL)) {
m_freem(n);
} else
#endif
if (n) {
if ((last->in6p_flags & INP_CONTROLOPTS) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
ret = ip6_savecontrol(last, n, &opts);
if (ret != 0) {
m_freem(n);
m_freem(opts);
last = in6p;
continue;
}
}
m_adj(n, *offp);
so_recv_data_stat(last->in6p_socket, m, 0);
if (sbappendaddr(&last->in6p_socket->so_rcv,
(struct sockaddr *)&rip6src,
n, opts, NULL) == 0) {
rip6stat.rip6s_fullsock++;
} else
sorwakeup(last->in6p_socket);
opts = NULL;
}
}
last = in6p;
}
#if NECP
if (last && !necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
&ip6->ip6_dst, &ip6->ip6_src, ifp, NULL, NULL)) {
m_freem(m);
ip6stat.ip6s_delivered--;
} else
#endif
if (last) {
if ((last->in6p_flags & INP_CONTROLOPTS) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
(last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
ret = ip6_savecontrol(last, m, &opts);
if (ret != 0) {
m_freem(m);
m_freem(opts);
ip6stat.ip6s_delivered--;
goto unlock;
}
}
m_adj(m, *offp);
so_recv_data_stat(last->in6p_socket, m, 0);
if (sbappendaddr(&last->in6p_socket->so_rcv,
(struct sockaddr *)&rip6src, m, opts, NULL) == 0) {
rip6stat.rip6s_fullsock++;
} else
sorwakeup(last->in6p_socket);
} else {
rip6stat.rip6s_nosock++;
if (m->m_flags & M_MCAST)
rip6stat.rip6s_nosockmcast++;
if (proto == IPPROTO_NONE)
m_freem(m);
else {
char *prvnxtp = ip6_get_prevhdr(m, *offp);
icmp6_error(m, ICMP6_PARAM_PROB,
ICMP6_PARAMPROB_NEXTHEADER,
prvnxtp - mtod(m, char *));
}
ip6stat.ip6s_delivered--;
}
unlock:
lck_rw_done(ripcbinfo.ipi_lock);
return IPPROTO_DONE;
}
void
rip6_ctlinput(
int cmd,
struct sockaddr *sa,
void *d)
{
struct ip6_hdr *ip6;
struct mbuf *m;
void *cmdarg = NULL;
int off = 0;
struct ip6ctlparam *ip6cp = NULL;
const struct sockaddr_in6 *sa6_src = NULL;
void (*notify)(struct inpcb *, int) = in6_rtchange;
if (sa->sa_family != AF_INET6 ||
sa->sa_len != sizeof(struct sockaddr_in6))
return;
if ((unsigned)cmd >= PRC_NCMDS)
return;
if (PRC_IS_REDIRECT(cmd)) {
notify = in6_rtchange;
d = NULL;
} else if (cmd == PRC_HOSTDEAD)
d = NULL;
else if (inet6ctlerrmap[cmd] == 0)
return;
if (d != NULL) {
ip6cp = (struct ip6ctlparam *)d;
m = ip6cp->ip6c_m;
ip6 = ip6cp->ip6c_ip6;
off = ip6cp->ip6c_off;
cmdarg = ip6cp->ip6c_cmdarg;
sa6_src = ip6cp->ip6c_src;
} else {
m = NULL;
ip6 = NULL;
sa6_src = &sa6_any;
}
(void) in6_pcbnotify(&ripcbinfo, sa, 0, (const struct sockaddr *)sa6_src,
0, cmd, cmdarg, notify);
}
int
rip6_output(
struct mbuf *m,
struct socket *so,
struct sockaddr_in6 *dstsock,
struct mbuf *control,
int israw)
{
struct in6_addr *dst;
struct ip6_hdr *ip6;
struct inpcb *in6p;
u_int plen = m->m_pkthdr.len;
int error = 0;
struct ip6_pktopts opt, *optp = NULL;
struct ip6_moptions *im6o = NULL;
struct ifnet *oifp = NULL;
int type = 0, code = 0;
int sotc = SO_TC_UNSPEC;
int netsvctype = _NET_SERVICE_TYPE_UNSPEC;
struct ip6_out_args ip6oa =
{ IFSCOPE_NONE, { 0 }, IP6OAF_SELECT_SRCIF, 0, 0, 0 };
int flags = IPV6_OUTARGS;
in6p = sotoin6pcb(so);
if (in6p == NULL
#if NECP
|| (necp_socket_should_use_flow_divert(in6p))
#endif
) {
if (in6p == NULL)
error = EINVAL;
else
error = EPROTOTYPE;
goto bad;
}
if (dstsock != NULL && IN6_IS_ADDR_V4MAPPED(&dstsock->sin6_addr)) {
error = EINVAL;
goto bad;
}
if (in6p->inp_flags & INP_BOUND_IF) {
ip6oa.ip6oa_boundif = in6p->inp_boundifp->if_index;
ip6oa.ip6oa_flags |= IP6OAF_BOUND_IF;
}
if (INP_NO_CELLULAR(in6p))
ip6oa.ip6oa_flags |= IP6OAF_NO_CELLULAR;
if (INP_NO_EXPENSIVE(in6p))
ip6oa.ip6oa_flags |= IP6OAF_NO_EXPENSIVE;
if (INP_AWDL_UNRESTRICTED(in6p))
ip6oa.ip6oa_flags |= IP6OAF_AWDL_UNRESTRICTED;
if (INP_INTCOPROC_ALLOWED(in6p))
ip6oa.ip6oa_flags |= IP6OAF_INTCOPROC_ALLOWED;
dst = &dstsock->sin6_addr;
if (control) {
sotc = so_tc_from_control(control, &netsvctype);
if ((error = ip6_setpktopts(control, &opt, NULL,
SOCK_PROTO(so))) != 0)
goto bad;
optp = &opt;
} else
optp = in6p->in6p_outputopts;
if (sotc == SO_TC_UNSPEC) {
sotc = so->so_traffic_class;
netsvctype = so->so_netsvctype;
}
ip6oa.ip6oa_sotc = sotc;
ip6oa.ip6oa_netsvctype = netsvctype;
if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
struct icmp6_hdr *icmp6;
if (m->m_len < sizeof(struct icmp6_hdr) &&
(m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
error = ENOBUFS;
goto bad;
}
icmp6 = mtod(m, struct icmp6_hdr *);
type = icmp6->icmp6_type;
code = icmp6->icmp6_code;
}
if (in6p->inp_flowhash == 0)
in6p->inp_flowhash = inp_calc_flowhash(in6p);
if (in6p->inp_flow == 0 && in6p->in6p_flags & IN6P_AUTOFLOWLABEL) {
in6p->inp_flow &= ~IPV6_FLOWLABEL_MASK;
in6p->inp_flow |=
(htonl(in6p->inp_flowhash) & IPV6_FLOWLABEL_MASK);
}
M_PREPEND(m, sizeof(*ip6), M_WAIT, 1);
if (m == NULL) {
error = ENOBUFS;
goto bad;
}
ip6 = mtod(m, struct ip6_hdr *);
ip6->ip6_dst = *dst;
im6o = in6p->in6p_moptions;
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
struct in6_pktinfo *pi;
struct ifnet *im6o_multicast_ifp = NULL;
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && im6o != NULL) {
IM6O_LOCK(im6o);
im6o_multicast_ifp = im6o->im6o_multicast_ifp;
IM6O_UNLOCK(im6o);
}
ifnet_head_lock_shared();
if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
oifp = ifindex2ifnet[pi->ipi6_ifindex];
if (oifp != NULL)
ifnet_reference(oifp);
} else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
im6o != NULL && im6o_multicast_ifp != NULL) {
oifp = im6o_multicast_ifp;
ifnet_reference(oifp);
ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
} else if (dstsock->sin6_scope_id) {
if (if_index < dstsock->sin6_scope_id) {
error = ENXIO;
ifnet_head_done();
goto bad;
}
ip6->ip6_dst.s6_addr16[1]
= htons(dstsock->sin6_scope_id & 0xffff);
}
ifnet_head_done();
}
{
struct in6_addr *in6a;
struct in6_addr storage;
u_short index = 0;
if (israw != 0 && optp && optp->ip6po_pktinfo && !IN6_IS_ADDR_UNSPECIFIED(&optp->ip6po_pktinfo->ipi6_addr)) {
in6a = &optp->ip6po_pktinfo->ipi6_addr;
flags |= IPV6_FLAG_NOSRCIFSEL;
} else if ((in6a = in6_selectsrc(dstsock, optp, in6p,
&in6p->in6p_route, NULL, &storage, ip6oa.ip6oa_boundif,
&error)) == 0) {
if (error == 0)
error = EADDRNOTAVAIL;
goto bad;
} else {
ip6oa.ip6oa_flags |= IP6OAF_BOUND_SRCADDR;
}
ip6->ip6_src = *in6a;
if (in6p->in6p_route.ro_rt != NULL) {
RT_LOCK(in6p->in6p_route.ro_rt);
if (in6p->in6p_route.ro_rt->rt_ifp != NULL)
index = in6p->in6p_route.ro_rt->rt_ifp->if_index;
RT_UNLOCK(in6p->in6p_route.ro_rt);
if (oifp != NULL)
ifnet_release(oifp);
ifnet_head_lock_shared();
if (index == 0 || if_index < index) {
panic("bad if_index on interface from route");
}
oifp = ifindex2ifnet[index];
if (oifp != NULL)
ifnet_reference(oifp);
ifnet_head_done();
}
}
ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
(in6p->inp_flow & IPV6_FLOWINFO_MASK);
ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
(IPV6_VERSION & IPV6_VERSION_MASK);
ip6->ip6_nxt = in6p->in6p_ip6_nxt;
ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
if (SOCK_PROTO(so) == IPPROTO_ICMPV6 || in6p->in6p_cksum != -1) {
struct mbuf *n;
int off;
u_int16_t *p;
if (SOCK_PROTO(so) == IPPROTO_ICMPV6)
off = offsetof(struct icmp6_hdr, icmp6_cksum);
else
off = in6p->in6p_cksum;
if (plen < (unsigned int)(off + 1)) {
error = EINVAL;
goto bad;
}
off += sizeof(struct ip6_hdr);
n = m;
while (n && n->m_len <= off) {
off -= n->m_len;
n = n->m_next;
}
if (!n)
goto bad;
p = (u_int16_t *)(void *)(mtod(n, caddr_t) + off);
*p = 0;
*p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
}
#if NECP
{
necp_kernel_policy_id policy_id;
u_int32_t route_rule_id;
if (net_qos_policy_restricted != 0 &&
ROUTE_UNUSABLE(&in6p->in6p_route)) {
struct sockaddr_in6 to;
struct sockaddr_in6 from;
ROUTE_RELEASE(&in6p->in6p_route);
bzero(&from, sizeof(struct sockaddr_in6));
from.sin6_family = AF_INET6;
from.sin6_len = sizeof(struct sockaddr_in6);
from.sin6_addr = ip6->ip6_src;
bzero(&to, sizeof(struct sockaddr_in6));
to.sin6_family = AF_INET6;
to.sin6_len = sizeof(struct sockaddr_in6);
to.sin6_addr = ip6->ip6_dst;
in6p->in6p_route.ro_dst.sin6_family = AF_INET6;
in6p->in6p_route.ro_dst.sin6_len = sizeof(struct sockaddr_in6);
((struct sockaddr_in6 *)(void *)&in6p->in6p_route.ro_dst)->sin6_addr =
ip6->ip6_dst;
rtalloc_scoped((struct route *)&in6p->in6p_route, ip6oa.ip6oa_boundif);
inp_update_necp_policy(in6p, (struct sockaddr *)&from,
(struct sockaddr *)&to, ip6oa.ip6oa_boundif);
in6p->inp_policyresult.results.qos_marking_gencount = 0;
}
if (!necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
&ip6->ip6_src, &ip6->ip6_dst, NULL, &policy_id, &route_rule_id)) {
error = EHOSTUNREACH;
goto bad;
}
necp_mark_packet_from_socket(m, in6p, policy_id, route_rule_id);
if (net_qos_policy_restricted != 0) {
necp_socket_update_qos_marking(in6p, in6p->in6p_route.ro_rt,
NULL, route_rule_id);
}
}
#endif
if ((so->so_flags1 & SOF1_QOSMARKING_ALLOWED))
ip6oa.ip6oa_flags |= IP6OAF_QOSMARKING_ALLOWED;
#if IPSEC
if (in6p->in6p_sp != NULL && ipsec_setsocket(m, so) != 0) {
error = ENOBUFS;
goto bad;
}
#endif
if (ROUTE_UNUSABLE(&in6p->in6p_route))
ROUTE_RELEASE(&in6p->in6p_route);
if (oifp != NULL) {
ifnet_release(oifp);
oifp = NULL;
}
set_packet_service_class(m, so, sotc, PKT_SCF_IPV6);
m->m_pkthdr.pkt_flowsrc = FLOWSRC_INPCB;
m->m_pkthdr.pkt_flowid = in6p->inp_flowhash;
m->m_pkthdr.pkt_flags |= (PKTF_FLOW_ID | PKTF_FLOW_LOCALSRC |
PKTF_FLOW_RAWSOCK);
m->m_pkthdr.pkt_proto = in6p->in6p_ip6_nxt;
if (im6o != NULL)
IM6O_ADDREF(im6o);
error = ip6_output(m, optp, &in6p->in6p_route, flags, im6o,
&oifp, &ip6oa);
if (im6o != NULL)
IM6O_REMREF(im6o);
if (in6p->in6p_route.ro_rt != NULL) {
struct rtentry *rt = in6p->in6p_route.ro_rt;
struct ifnet *outif;
if ((rt->rt_flags & RTF_MULTICAST) ||
in6p->in6p_socket == NULL ||
!(in6p->in6p_socket->so_state & SS_ISCONNECTED)) {
rt = NULL;
}
if (rt == NULL)
ROUTE_RELEASE(&in6p->in6p_route);
if (rt != NULL &&
(outif = rt->rt_ifp) != in6p->in6p_last_outifp)
in6p->in6p_last_outifp = outif;
} else {
ROUTE_RELEASE(&in6p->in6p_route);
}
if (error != 0 && (ip6oa.ip6oa_retflags & IP6OARF_IFDENIED) &&
(INP_NO_CELLULAR(in6p) || INP_NO_EXPENSIVE(in6p)))
soevent(in6p->inp_socket, (SO_FILT_HINT_LOCKED|
SO_FILT_HINT_IFDENIED));
if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
if (oifp)
icmp6_ifoutstat_inc(oifp, type, code);
icmp6stat.icp6s_outhist[type]++;
} else
rip6stat.rip6s_opackets++;
goto freectl;
bad:
if (m != NULL)
m_freem(m);
freectl:
if (optp == &opt && optp->ip6po_rthdr)
ROUTE_RELEASE(&optp->ip6po_route);
if (control != NULL) {
if (optp == &opt)
ip6_clearpktopts(optp, -1);
m_freem(control);
}
if (oifp != NULL)
ifnet_release(oifp);
return(error);
}
int
rip6_ctloutput(
struct socket *so,
struct sockopt *sopt)
{
int error, optval;
if (sopt->sopt_level == IPPROTO_ICMPV6)
return(icmp6_ctloutput(so, sopt));
else if (sopt->sopt_level != IPPROTO_IPV6 &&
!(sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_FLUSH))
return (EINVAL);
error = 0;
switch (sopt->sopt_dir) {
case SOPT_GET:
switch (sopt->sopt_name) {
case IPV6_CHECKSUM:
error = ip6_raw_ctloutput(so, sopt);
break;
default:
error = ip6_ctloutput(so, sopt);
break;
}
break;
case SOPT_SET:
switch (sopt->sopt_name) {
case IPV6_CHECKSUM:
error = ip6_raw_ctloutput(so, sopt);
break;
case SO_FLUSH:
if ((error = sooptcopyin(sopt, &optval, sizeof (optval),
sizeof (optval))) != 0)
break;
error = inp_flush(sotoinpcb(so), optval);
break;
default:
error = ip6_ctloutput(so, sopt);
break;
}
break;
}
return (error);
}
static int
rip6_attach(struct socket *so, int proto, struct proc *p)
{
struct inpcb *inp;
int error;
inp = sotoinpcb(so);
if (inp)
panic("rip6_attach");
if ((error = proc_suser(p)) != 0)
return error;
error = soreserve(so, rip_sendspace, rip_recvspace);
if (error)
return error;
error = in_pcballoc(so, &ripcbinfo, p);
if (error)
return error;
inp = (struct inpcb *)so->so_pcb;
inp->inp_vflag |= INP_IPV6;
inp->in6p_ip6_nxt = (char)proto;
inp->in6p_hops = -1;
inp->in6p_cksum = -1;
MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
sizeof(struct icmp6_filter), M_PCB, M_WAITOK);
if (inp->in6p_icmp6filt == NULL)
return (ENOMEM);
ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
return 0;
}
static int
rip6_detach(struct socket *so)
{
struct inpcb *inp;
inp = sotoinpcb(so);
if (inp == 0)
panic("rip6_detach");
if (inp->in6p_icmp6filt) {
FREE(inp->in6p_icmp6filt, M_PCB);
inp->in6p_icmp6filt = NULL;
}
in6_pcbdetach(inp);
return 0;
}
static int
rip6_abort(struct socket *so)
{
soisdisconnected(so);
return rip6_detach(so);
}
static int
rip6_disconnect(struct socket *so)
{
struct inpcb *inp = sotoinpcb(so);
if ((so->so_state & SS_ISCONNECTED) == 0)
return ENOTCONN;
inp->in6p_faddr = in6addr_any;
return rip6_abort(so);
}
static int
rip6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
#pragma unused(p)
struct inpcb *inp = sotoinpcb(so);
struct sockaddr_in6 sin6;
struct ifaddr *ifa = NULL;
struct ifnet *outif = NULL;
int error;
if (inp == NULL
#if NECP
|| (necp_socket_should_use_flow_divert(inp))
#endif
)
return (inp == NULL ? EINVAL : EPROTOTYPE);
if (nam->sa_len != sizeof (struct sockaddr_in6))
return (EINVAL);
if (TAILQ_EMPTY(&ifnet_head) || SIN6(nam)->sin6_family != AF_INET6)
return (EADDRNOTAVAIL);
bzero(&sin6, sizeof (sin6));
*(&sin6) = *SIN6(nam);
if ((error = sa6_embedscope(&sin6, ip6_use_defzone)) != 0)
return (error);
sin6.sin6_flowinfo = 0;
sin6.sin6_scope_id = 0;
sin6.sin6_port = 0;
if (!IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr) &&
(ifa = ifa_ifwithaddr(SA(&sin6))) == 0)
return (EADDRNOTAVAIL);
if (ifa != NULL) {
IFA_LOCK(ifa);
if (((struct in6_ifaddr *)ifa)->ia6_flags &
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
return (EADDRNOTAVAIL);
}
outif = ifa->ifa_ifp;
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
}
inp->in6p_laddr = sin6.sin6_addr;
inp->in6p_last_outifp = outif;
return (0);
}
static int
rip6_connect(struct socket *so, struct sockaddr *nam, __unused struct proc *p)
{
struct inpcb *inp = sotoinpcb(so);
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)(void *)nam;
struct in6_addr *in6a = NULL;
struct in6_addr storage;
int error = 0;
#if ENABLE_DEFAULT_SCOPE
struct sockaddr_in6 tmp;
#endif
unsigned int ifscope;
struct ifnet *outif = NULL;
if (inp == NULL
#if NECP
|| (necp_socket_should_use_flow_divert(inp))
#endif
)
return (inp == NULL ? EINVAL : EPROTOTYPE);
if (nam->sa_len != sizeof(*addr))
return EINVAL;
if (TAILQ_EMPTY(&ifnet_head))
return EADDRNOTAVAIL;
if (addr->sin6_family != AF_INET6)
return EAFNOSUPPORT;
#if ENABLE_DEFAULT_SCOPE
if (addr->sin6_scope_id == 0) {
tmp = *addr;
addr = &tmp;
addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
}
#endif
if (in6_embedscope(&SIN6(nam)->sin6_addr, SIN6(nam), inp, NULL, NULL) != 0)
return (EINVAL);
ifscope = (inp->inp_flags & INP_BOUND_IF) ?
inp->inp_boundifp->if_index : IFSCOPE_NONE;
in6a = in6_selectsrc(addr, inp->in6p_outputopts, inp, &inp->in6p_route,
NULL, &storage, ifscope, &error);
if (in6a == NULL)
return (error ? error : EADDRNOTAVAIL);
inp->in6p_laddr = *in6a;
inp->in6p_faddr = addr->sin6_addr;
if (inp->in6p_route.ro_rt != NULL)
outif = inp->in6p_route.ro_rt->rt_ifp;
inp->in6p_last_outifp = outif;
soisconnected(so);
return 0;
}
static int
rip6_shutdown(struct socket *so)
{
socantsendmore(so);
return 0;
}
static int
rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
struct mbuf *control, struct proc *p)
{
#pragma unused(flags, p)
struct inpcb *inp = sotoinpcb(so);
struct sockaddr_in6 tmp;
struct sockaddr_in6 *dst = (struct sockaddr_in6 *)(void *)nam;
int error = 0;
if (inp == NULL
#if NECP
|| (necp_socket_should_use_flow_divert(inp))
#endif
) {
if (inp == NULL)
error = EINVAL;
else
error = EPROTOTYPE;
goto bad;
}
if (so->so_state & SS_ISCONNECTED) {
if (nam != NULL) {
error = EISCONN;
goto bad;
}
bzero(&tmp, sizeof(tmp));
tmp.sin6_family = AF_INET6;
tmp.sin6_len = sizeof(struct sockaddr_in6);
bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
sizeof(struct in6_addr));
dst = &tmp;
} else {
if (nam == NULL) {
error = ENOTCONN;
goto bad;
}
tmp = *(struct sockaddr_in6 *)(void *)nam;
dst = &tmp;
}
#if ENABLE_DEFAULT_SCOPE
if (dst->sin6_scope_id == 0) {
dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
}
#endif
return (rip6_output(m, so, dst, control, 1));
bad:
VERIFY(error != 0);
if (m != NULL)
m_freem(m);
if (control != NULL)
m_freem(control);
return (error);
}
struct pr_usrreqs rip6_usrreqs = {
.pru_abort = rip6_abort,
.pru_attach = rip6_attach,
.pru_bind = rip6_bind,
.pru_connect = rip6_connect,
.pru_control = in6_control,
.pru_detach = rip6_detach,
.pru_disconnect = rip6_disconnect,
.pru_peeraddr = in6_getpeeraddr,
.pru_send = rip6_send,
.pru_shutdown = rip6_shutdown,
.pru_sockaddr = in6_getsockaddr,
.pru_sosend = sosend,
.pru_soreceive = soreceive,
};
__private_extern__ struct pr_usrreqs icmp6_dgram_usrreqs = {
.pru_abort = rip6_abort,
.pru_attach = icmp6_dgram_attach,
.pru_bind = rip6_bind,
.pru_connect = rip6_connect,
.pru_control = in6_control,
.pru_detach = rip6_detach,
.pru_disconnect = rip6_disconnect,
.pru_peeraddr = in6_getpeeraddr,
.pru_send = icmp6_dgram_send,
.pru_shutdown = rip6_shutdown,
.pru_sockaddr = in6_getsockaddr,
.pru_sosend = sosend,
.pru_soreceive = soreceive,
};