#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/sockio.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/in_var.h>
#include <netinet/igmp.h>
#include <netinet/ip_mroute.h>
#include <netinet/udp.h>
#ifndef NTOHL
#if BYTE_ORDER != BIG_ENDIAN
#define NTOHL(d) ((d) = ntohl((d)))
#define NTOHS(d) ((d) = ntohs((u_short)(d)))
#define HTONL(d) ((d) = htonl((d)))
#define HTONS(d) ((d) = htons((u_short)(d)))
#else
#define NTOHL(d)
#define NTOHS(d)
#define HTONL(d)
#define HTONS(d)
#endif
#endif
#ifndef MROUTING
extern u_long _ip_mcast_src(int vifi);
extern int _ip_mforward(struct ip *ip, struct ifnet *ifp,
struct mbuf *m, struct ip_moptions *imo);
extern int _ip_mrouter_done(void);
extern int _ip_mrouter_get(struct socket *so, struct sockopt *sopt);
extern int _ip_mrouter_set(struct socket *so, struct sockopt *sopt);
extern int _mrt_ioctl(int req, caddr_t data, struct proc *p);
struct socket *ip_mrouter = NULL;
u_int rsvpdebug = 0;
int
_ip_mrouter_set(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
return(EOPNOTSUPP);
}
int (*ip_mrouter_set)(struct socket *, struct sockopt *) = _ip_mrouter_set;
int
_ip_mrouter_get(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
return(EOPNOTSUPP);
}
int (*ip_mrouter_get)(struct socket *, struct sockopt *) = _ip_mrouter_get;
int
_ip_mrouter_done()
{
return(0);
}
int (*ip_mrouter_done)(void) = _ip_mrouter_done;
int
_ip_mforward(ip, ifp, m, imo)
struct ip *ip;
struct ifnet *ifp;
struct mbuf *m;
struct ip_moptions *imo;
{
return(0);
}
int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
struct ip_moptions *) = _ip_mforward;
int
_mrt_ioctl(int req, caddr_t data, struct proc *p)
{
return EOPNOTSUPP;
}
int (*mrt_ioctl)(int, caddr_t, struct proc *) = _mrt_ioctl;
void
rsvp_input(m, iphlen)
struct mbuf *m;
int iphlen;
{
if (!rsvp_on) {
m_freem(m);
return;
}
if (ip_rsvpd != NULL) {
if (rsvpdebug)
printf("rsvp_input: Sending packet up old-style socket\n");
rip_input(m, iphlen);
return;
}
m_freem(m);
}
void ipip_input(struct mbuf *m, int iphlen) {
rip_input(m, iphlen);
}
int (*legal_vif_num)(int) = 0;
u_long
_ip_mcast_src(int vifi) { return INADDR_ANY; }
u_long (*ip_mcast_src)(int) = _ip_mcast_src;
int
ip_rsvp_vif_init(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
return(EINVAL);
}
int
ip_rsvp_vif_done(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
return(EINVAL);
}
void
ip_rsvp_force_done(so)
struct socket *so;
{
return;
}
#else
#define M_HASCL(m) ((m)->m_flags & M_EXT)
#define INSIZ sizeof(struct in_addr)
#define same(a1, a2) \
(bcmp((caddr_t)(a1), (caddr_t)(a2), INSIZ) == 0)
#ifndef MROUTE_LKM
struct socket *ip_mrouter = NULL;
static struct mrtstat mrtstat;
#else
extern void X_ipip_input(struct mbuf *m, int iphlen);
extern struct mrtstat mrtstat;
static int ip_mrtproto;
#endif
#define NO_RTE_FOUND 0x1
#define RTE_FOUND 0x2
static struct mfc *mfctable[MFCTBLSIZ];
static u_char nexpire[MFCTBLSIZ];
static struct vif viftable[MAXVIFS];
static u_int mrtdebug = 0;
#define DEBUG_MFC 0x02
#define DEBUG_FORWARD 0x04
#define DEBUG_EXPIRE 0x08
#define DEBUG_XMIT 0x10
static u_int tbfdebug = 0;
static u_int rsvpdebug = 0;
#define EXPIRE_TIMEOUT (hz / 4)
#define UPCALL_EXPIRE 6
static struct tbf tbftable[MAXVIFS];
#define TBF_REPROCESS (hz / 100)
static struct ifnet multicast_decap_if[MAXVIFS];
#define ENCAP_TTL 64
#define ENCAP_PROTO IPPROTO_IPIP
static struct ip multicast_encap_iphdr = {
#if BYTE_ORDER == LITTLE_ENDIAN
sizeof(struct ip) >> 2, IPVERSION,
#else
IPVERSION, sizeof(struct ip) >> 2,
#endif
0,
sizeof(struct ip),
0,
0,
ENCAP_TTL, ENCAP_PROTO,
0,
};
static vifi_t numvifs = 0;
static int have_encap_tunnel = 0;
static u_long last_encap_src;
static struct vif *last_encap_vif;
static u_long X_ip_mcast_src(int vifi);
static int X_ip_mforward(struct ip *ip, struct ifnet *ifp, struct mbuf *m, struct ip_moptions *imo);
static int X_ip_mrouter_done(void);
static int X_ip_mrouter_get(struct socket *so, struct sockopt *m);
static int X_ip_mrouter_set(struct socket *so, struct sockopt *m);
static int X_legal_vif_num(int vif);
static int X_mrt_ioctl(int cmd, caddr_t data);
static int get_sg_cnt(struct sioc_sg_req *);
static int get_vif_cnt(struct sioc_vif_req *);
static int ip_mrouter_init(struct socket *, int);
static int add_vif(struct vifctl *);
static int del_vif(vifi_t);
static int add_mfc(struct mfcctl *);
static int del_mfc(struct mfcctl *);
static int socket_send(struct socket *, struct mbuf *, struct sockaddr_in *);
static int set_assert(int);
static void expire_upcalls(void *);
static int ip_mdq(struct mbuf *, struct ifnet *, struct mfc *,
vifi_t);
static void phyint_send(struct ip *, struct vif *, struct mbuf *);
static void encap_send(struct ip *, struct vif *, struct mbuf *);
static void tbf_control(struct vif *, struct mbuf *, struct ip *, u_long);
static void tbf_queue(struct vif *, struct mbuf *);
static void tbf_process_q(struct vif *);
static void tbf_reprocess_q(void *);
static int tbf_dq_sel(struct vif *, struct ip *);
static void tbf_send_packet(struct vif *, struct mbuf *);
static void tbf_update_tokens(struct vif *);
static int priority(struct vif *, struct ip *);
void multiencap_decap(struct mbuf *);
static int pim_assert;
#define ASSERT_MSG_TIME 3000000
#define MFCHASH(a, g) MFCHASHMOD(((a) >> 20) ^ ((a) >> 10) ^ (a) ^ \
((g) >> 20) ^ ((g) >> 10) ^ (g))
#define MFCFIND(o, g, rt) { \
register struct mfc *_rt = mfctable[MFCHASH(o,g)]; \
rt = NULL; \
++mrtstat.mrts_mfc_lookups; \
while (_rt) { \
if ((_rt->mfc_origin.s_addr == o) && \
(_rt->mfc_mcastgrp.s_addr == g) && \
(_rt->mfc_stall == NULL)) { \
rt = _rt; \
break; \
} \
_rt = _rt->mfc_next; \
} \
if (rt == NULL) { \
++mrtstat.mrts_mfc_misses; \
} \
}
#define TV_DELTA(a, b, delta) { \
register int xxs; \
\
delta = (a).tv_usec - (b).tv_usec; \
if ((xxs = (a).tv_sec - (b).tv_sec)) { \
switch (xxs) { \
case 2: \
delta += 1000000; \
\
case 1: \
delta += 1000000; \
break; \
default: \
delta += (1000000 * xxs); \
} \
} \
}
#define TV_LT(a, b) (((a).tv_usec < (b).tv_usec && \
(a).tv_sec <= (b).tv_sec) || (a).tv_sec < (b).tv_sec)
#if UPCALL_TIMING
u_long upcall_data[51];
static void collate(struct timeval *);
#endif
static int
X_ip_mrouter_set(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
int error, optval;
vifi_t vifi;
struct vifctl vifc;
struct mfcctl mfc;
if (so != ip_mrouter && sopt->sopt_name != MRT_INIT)
return (EPERM);
error = 0;
switch (sopt->sopt_name) {
case MRT_INIT:
error = sooptcopyin(sopt, &optval, sizeof optval,
sizeof optval);
if (error)
break;
error = ip_mrouter_init(so, optval);
break;
case MRT_DONE:
error = ip_mrouter_done();
break;
case MRT_ADD_VIF:
error = sooptcopyin(sopt, &vifc, sizeof vifc, sizeof vifc);
if (error)
break;
error = add_vif(&vifc);
break;
case MRT_DEL_VIF:
error = sooptcopyin(sopt, &vifi, sizeof vifi, sizeof vifi);
if (error)
break;
error = del_vif(vifi);
break;
case MRT_ADD_MFC:
case MRT_DEL_MFC:
error = sooptcopyin(sopt, &mfc, sizeof mfc, sizeof mfc);
if (error)
break;
if (sopt->sopt_name == MRT_ADD_MFC)
error = add_mfc(&mfc);
else
error = del_mfc(&mfc);
break;
case MRT_ASSERT:
error = sooptcopyin(sopt, &optval, sizeof optval,
sizeof optval);
if (error)
break;
set_assert(optval);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*ip_mrouter_set)(struct socket *, struct sockopt *) = X_ip_mrouter_set;
#endif
static int
X_ip_mrouter_get(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
int error;
static int version = 0x0305;
switch (sopt->sopt_name) {
case MRT_VERSION:
error = sooptcopyout(sopt, &version, sizeof version);
break;
case MRT_ASSERT:
error = sooptcopyout(sopt, &pim_assert, sizeof pim_assert);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*ip_mrouter_get)(struct socket *, struct sockopt *) = X_ip_mrouter_get;
#endif
static int
X_mrt_ioctl(cmd, data)
int cmd;
caddr_t data;
{
int error = 0;
switch (cmd) {
case (SIOCGETVIFCNT):
return (get_vif_cnt((struct sioc_vif_req *)data));
break;
case (SIOCGETSGCNT):
return (get_sg_cnt((struct sioc_sg_req *)data));
break;
default:
return (EINVAL);
break;
}
return error;
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*mrt_ioctl)(int, caddr_t) = X_mrt_ioctl;
#endif
static int
get_sg_cnt(req)
register struct sioc_sg_req *req;
{
register struct mfc *rt;
int s;
s = splnet();
MFCFIND(req->src.s_addr, req->grp.s_addr, rt);
splx(s);
if (rt != NULL) {
req->pktcnt = rt->mfc_pkt_cnt;
req->bytecnt = rt->mfc_byte_cnt;
req->wrong_if = rt->mfc_wrong_if;
} else
req->pktcnt = req->bytecnt = req->wrong_if = 0xffffffff;
return 0;
}
static int
get_vif_cnt(req)
register struct sioc_vif_req *req;
{
register vifi_t vifi = req->vifi;
if (vifi >= numvifs) return EINVAL;
req->icount = viftable[vifi].v_pkt_in;
req->ocount = viftable[vifi].v_pkt_out;
req->ibytes = viftable[vifi].v_bytes_in;
req->obytes = viftable[vifi].v_bytes_out;
return 0;
}
static int
ip_mrouter_init(so, version)
struct socket *so;
int version;
{
if (mrtdebug)
log(LOG_DEBUG,"ip_mrouter_init: so_type = %d, pr_protocol = %d\n",
so->so_type, so->so_proto->pr_protocol);
if (so->so_type != SOCK_RAW ||
so->so_proto->pr_protocol != IPPROTO_IGMP) return EOPNOTSUPP;
if (version != 1)
return ENOPROTOOPT;
if (ip_mrouter != NULL) return EADDRINUSE;
ip_mrouter = so;
bzero((caddr_t)mfctable, sizeof(mfctable));
bzero((caddr_t)nexpire, sizeof(nexpire));
pim_assert = 0;
timeout(expire_upcalls, (caddr_t)NULL, EXPIRE_TIMEOUT);
if (mrtdebug)
log(LOG_DEBUG, "ip_mrouter_init\n");
return 0;
}
static int
X_ip_mrouter_done()
{
vifi_t vifi;
int i;
struct ifnet *ifp;
struct ifreq ifr;
struct mfc *rt;
struct rtdetq *rte;
int s;
s = splnet();
for (vifi = 0; vifi < numvifs; vifi++) {
if (viftable[vifi].v_lcl_addr.s_addr != 0 &&
!(viftable[vifi].v_flags & VIFF_TUNNEL)) {
((struct sockaddr_in *)&(ifr.ifr_addr))->sin_family = AF_INET;
((struct sockaddr_in *)&(ifr.ifr_addr))->sin_addr.s_addr
= INADDR_ANY;
ifp = viftable[vifi].v_ifp;
if_allmulti(ifp, 0);
}
}
bzero((caddr_t)tbftable, sizeof(tbftable));
bzero((caddr_t)viftable, sizeof(viftable));
numvifs = 0;
pim_assert = 0;
untimeout(expire_upcalls, (caddr_t)NULL);
for (i = 0; i < MFCTBLSIZ; i++) {
for (rt = mfctable[i]; rt != NULL; ) {
struct mfc *nr = rt->mfc_next;
for (rte = rt->mfc_stall; rte != NULL; ) {
struct rtdetq *n = rte->next;
m_freem(rte->m);
FREE(rte, M_MRTABLE);
rte = n;
}
FREE(rt, M_MRTABLE);
rt = nr;
}
}
bzero((caddr_t)mfctable, sizeof(mfctable));
last_encap_src = 0;
last_encap_vif = NULL;
have_encap_tunnel = 0;
ip_mrouter = NULL;
splx(s);
if (mrtdebug)
log(LOG_DEBUG, "ip_mrouter_done\n");
return 0;
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*ip_mrouter_done)(void) = X_ip_mrouter_done;
#endif
static int
set_assert(i)
int i;
{
if ((i != 1) && (i != 0))
return EINVAL;
pim_assert = i;
return 0;
}
static int
add_vif(vifcp)
register struct vifctl *vifcp;
{
register struct vif *vifp = viftable + vifcp->vifc_vifi;
static struct sockaddr_in sin = {sizeof sin, AF_INET};
struct ifaddr *ifa;
struct ifnet *ifp;
int error, s;
struct tbf *v_tbf = tbftable + vifcp->vifc_vifi;
if (vifcp->vifc_vifi >= MAXVIFS) return EINVAL;
if (vifp->v_lcl_addr.s_addr != 0) return EADDRINUSE;
sin.sin_addr = vifcp->vifc_lcl_addr;
ifa = ifa_ifwithaddr((struct sockaddr *)&sin);
if (ifa == 0) return EADDRNOTAVAIL;
ifp = ifa->ifa_ifp;
ifafree(ifa);
ifa = NULL;
if (vifcp->vifc_flags & VIFF_TUNNEL) {
if ((vifcp->vifc_flags & VIFF_SRCRT) == 0) {
if (have_encap_tunnel == 0) {
have_encap_tunnel = 1;
for (s = 0; s < MAXVIFS; ++s) {
multicast_decap_if[s].if_name = "mdecap";
multicast_decap_if[s].if_unit = s;
multicast_decap_if[s].if_family = APPLE_IF_FAM_MDECAP;
}
}
ifp = &multicast_decap_if[vifcp->vifc_vifi];
bzero(&vifp->v_route, sizeof(vifp->v_route));
} else {
log(LOG_ERR, "source routed tunnels not supported\n");
return EOPNOTSUPP;
}
} else {
if ((ifp->if_flags & IFF_MULTICAST) == 0)
return EOPNOTSUPP;
s = splnet();
error = if_allmulti(ifp, 1);
splx(s);
if (error)
return error;
}
s = splnet();
vifp->v_tbf = v_tbf;
GET_TIME(vifp->v_tbf->tbf_last_pkt_t);
vifp->v_tbf->tbf_n_tok = 0;
vifp->v_tbf->tbf_q_len = 0;
vifp->v_tbf->tbf_max_q_len = MAXQSIZE;
vifp->v_tbf->tbf_q = vifp->v_tbf->tbf_t = NULL;
vifp->v_flags = vifcp->vifc_flags;
vifp->v_threshold = vifcp->vifc_threshold;
vifp->v_lcl_addr = vifcp->vifc_lcl_addr;
vifp->v_rmt_addr = vifcp->vifc_rmt_addr;
vifp->v_ifp = ifp;
vifp->v_rate_limit= vifcp->vifc_rate_limit * 1024 / 1000;
vifp->v_rsvp_on = 0;
vifp->v_rsvpd = NULL;
vifp->v_pkt_in = 0;
vifp->v_pkt_out = 0;
vifp->v_bytes_in = 0;
vifp->v_bytes_out = 0;
splx(s);
if (numvifs <= vifcp->vifc_vifi) numvifs = vifcp->vifc_vifi + 1;
if (mrtdebug)
log(LOG_DEBUG, "add_vif #%d, lcladdr %lx, %s %lx, thresh %x, rate %d\n",
vifcp->vifc_vifi,
(u_long)ntohl(vifcp->vifc_lcl_addr.s_addr),
(vifcp->vifc_flags & VIFF_TUNNEL) ? "rmtaddr" : "mask",
(u_long)ntohl(vifcp->vifc_rmt_addr.s_addr),
vifcp->vifc_threshold,
vifcp->vifc_rate_limit);
return 0;
}
static int
del_vif(vifi)
vifi_t vifi;
{
register struct vif *vifp = &viftable[vifi];
register struct mbuf *m;
struct ifnet *ifp;
struct ifreq ifr;
int s;
if (vifi >= numvifs) return EINVAL;
if (vifp->v_lcl_addr.s_addr == 0) return EADDRNOTAVAIL;
s = splnet();
if (!(vifp->v_flags & VIFF_TUNNEL)) {
((struct sockaddr_in *)&(ifr.ifr_addr))->sin_family = AF_INET;
((struct sockaddr_in *)&(ifr.ifr_addr))->sin_addr.s_addr = INADDR_ANY;
ifp = vifp->v_ifp;
if_allmulti(ifp, 0);
}
if (vifp == last_encap_vif) {
last_encap_vif = 0;
last_encap_src = 0;
}
while (vifp->v_tbf->tbf_q) {
m = vifp->v_tbf->tbf_q;
vifp->v_tbf->tbf_q = m->m_act;
m_freem(m);
}
bzero((caddr_t)vifp->v_tbf, sizeof(*(vifp->v_tbf)));
bzero((caddr_t)vifp, sizeof (*vifp));
if (mrtdebug)
log(LOG_DEBUG, "del_vif %d, numvifs %d\n", vifi, numvifs);
for (vifi = numvifs; vifi > 0; vifi--)
if (viftable[vifi-1].v_lcl_addr.s_addr != 0) break;
numvifs = vifi;
splx(s);
return 0;
}
static int
add_mfc(mfccp)
struct mfcctl *mfccp;
{
struct mfc *rt;
u_long hash;
struct rtdetq *rte;
register u_short nstl;
int s;
int i;
MFCFIND(mfccp->mfcc_origin.s_addr, mfccp->mfcc_mcastgrp.s_addr, rt);
if (rt) {
if (mrtdebug & DEBUG_MFC)
log(LOG_DEBUG,"add_mfc update o %lx g %lx p %x\n",
(u_long)ntohl(mfccp->mfcc_origin.s_addr),
(u_long)ntohl(mfccp->mfcc_mcastgrp.s_addr),
mfccp->mfcc_parent);
s = splnet();
rt->mfc_parent = mfccp->mfcc_parent;
for (i = 0; i < numvifs; i++)
rt->mfc_ttls[i] = mfccp->mfcc_ttls[i];
splx(s);
return 0;
}
s = splnet();
hash = MFCHASH(mfccp->mfcc_origin.s_addr, mfccp->mfcc_mcastgrp.s_addr);
for (rt = mfctable[hash], nstl = 0; rt; rt = rt->mfc_next) {
if ((rt->mfc_origin.s_addr == mfccp->mfcc_origin.s_addr) &&
(rt->mfc_mcastgrp.s_addr == mfccp->mfcc_mcastgrp.s_addr) &&
(rt->mfc_stall != NULL)) {
if (nstl++)
log(LOG_ERR, "add_mfc %s o %lx g %lx p %x dbx %p\n",
"multiple kernel entries",
(u_long)ntohl(mfccp->mfcc_origin.s_addr),
(u_long)ntohl(mfccp->mfcc_mcastgrp.s_addr),
mfccp->mfcc_parent, (void *)rt->mfc_stall);
if (mrtdebug & DEBUG_MFC)
log(LOG_DEBUG,"add_mfc o %lx g %lx p %x dbg %p\n",
(u_long)ntohl(mfccp->mfcc_origin.s_addr),
(u_long)ntohl(mfccp->mfcc_mcastgrp.s_addr),
mfccp->mfcc_parent, (void *)rt->mfc_stall);
rt->mfc_origin = mfccp->mfcc_origin;
rt->mfc_mcastgrp = mfccp->mfcc_mcastgrp;
rt->mfc_parent = mfccp->mfcc_parent;
for (i = 0; i < numvifs; i++)
rt->mfc_ttls[i] = mfccp->mfcc_ttls[i];
rt->mfc_pkt_cnt = 0;
rt->mfc_byte_cnt = 0;
rt->mfc_wrong_if = 0;
rt->mfc_last_assert.tv_sec = rt->mfc_last_assert.tv_usec = 0;
rt->mfc_expire = 0;
nexpire[hash]--;
for (rte = rt->mfc_stall; rte != NULL; ) {
struct rtdetq *n = rte->next;
ip_mdq(rte->m, rte->ifp, rt, -1);
m_freem(rte->m);
#if UPCALL_TIMING
collate(&(rte->t));
#endif
FREE(rte, M_MRTABLE);
rte = n;
}
rt->mfc_stall = NULL;
}
}
if (nstl == 0) {
if (mrtdebug & DEBUG_MFC)
log(LOG_DEBUG,"add_mfc no upcall h %lu o %lx g %lx p %x\n",
hash, (u_long)ntohl(mfccp->mfcc_origin.s_addr),
(u_long)ntohl(mfccp->mfcc_mcastgrp.s_addr),
mfccp->mfcc_parent);
for (rt = mfctable[hash]; rt != NULL; rt = rt->mfc_next) {
if ((rt->mfc_origin.s_addr == mfccp->mfcc_origin.s_addr) &&
(rt->mfc_mcastgrp.s_addr == mfccp->mfcc_mcastgrp.s_addr)) {
rt->mfc_origin = mfccp->mfcc_origin;
rt->mfc_mcastgrp = mfccp->mfcc_mcastgrp;
rt->mfc_parent = mfccp->mfcc_parent;
for (i = 0; i < numvifs; i++)
rt->mfc_ttls[i] = mfccp->mfcc_ttls[i];
rt->mfc_pkt_cnt = 0;
rt->mfc_byte_cnt = 0;
rt->mfc_wrong_if = 0;
rt->mfc_last_assert.tv_sec = rt->mfc_last_assert.tv_usec = 0;
if (rt->mfc_expire)
nexpire[hash]--;
rt->mfc_expire = 0;
}
}
if (rt == NULL) {
rt = (struct mfc *) _MALLOC(sizeof(*rt), M_MRTABLE, M_NOWAIT);
if (rt == NULL) {
splx(s);
return ENOBUFS;
}
rt->mfc_origin = mfccp->mfcc_origin;
rt->mfc_mcastgrp = mfccp->mfcc_mcastgrp;
rt->mfc_parent = mfccp->mfcc_parent;
for (i = 0; i < numvifs; i++)
rt->mfc_ttls[i] = mfccp->mfcc_ttls[i];
rt->mfc_pkt_cnt = 0;
rt->mfc_byte_cnt = 0;
rt->mfc_wrong_if = 0;
rt->mfc_last_assert.tv_sec = rt->mfc_last_assert.tv_usec = 0;
rt->mfc_expire = 0;
rt->mfc_stall = NULL;
rt->mfc_next = mfctable[hash];
mfctable[hash] = rt;
}
}
splx(s);
return 0;
}
#if UPCALL_TIMING
static void collate(t)
register struct timeval *t;
{
register u_long d;
register struct timeval tp;
register u_long delta;
GET_TIME(tp);
if (TV_LT(*t, tp))
{
TV_DELTA(tp, *t, delta);
d = delta >> 10;
if (d > 50)
d = 50;
++upcall_data[d];
}
}
#endif
static int
del_mfc(mfccp)
struct mfcctl *mfccp;
{
struct in_addr origin;
struct in_addr mcastgrp;
struct mfc *rt;
struct mfc **nptr;
u_long hash;
int s;
origin = mfccp->mfcc_origin;
mcastgrp = mfccp->mfcc_mcastgrp;
hash = MFCHASH(origin.s_addr, mcastgrp.s_addr);
if (mrtdebug & DEBUG_MFC)
log(LOG_DEBUG,"del_mfc orig %lx mcastgrp %lx\n",
(u_long)ntohl(origin.s_addr), (u_long)ntohl(mcastgrp.s_addr));
s = splnet();
nptr = &mfctable[hash];
while ((rt = *nptr) != NULL) {
if (origin.s_addr == rt->mfc_origin.s_addr &&
mcastgrp.s_addr == rt->mfc_mcastgrp.s_addr &&
rt->mfc_stall == NULL)
break;
nptr = &rt->mfc_next;
}
if (rt == NULL) {
splx(s);
return EADDRNOTAVAIL;
}
*nptr = rt->mfc_next;
FREE(rt, M_MRTABLE);
splx(s);
return 0;
}
static int
socket_send(s, mm, src)
struct socket *s;
struct mbuf *mm;
struct sockaddr_in *src;
{
socket_lock(s, 1);
if (s) {
if (sbappendaddr(&s->so_rcv,
(struct sockaddr *)src,
mm, (struct mbuf *)0, NULL) != 0) {
sorwakeup(s);
socket_unlock(s, 1);
return 0;
}
}
socket_unlock(s, 1);
m_freem(mm);
return -1;
}
#define IP_HDR_LEN 20
#define TUNNEL_LEN 12
static int
X_ip_mforward(ip, ifp, m, imo)
register struct ip *ip;
struct ifnet *ifp;
struct mbuf *m;
struct ip_moptions *imo;
{
register struct mfc *rt;
register u_char *ipoptions;
static struct sockaddr_in k_igmpsrc = { sizeof k_igmpsrc, AF_INET };
static int srctun = 0;
register struct mbuf *mm;
int s;
vifi_t vifi;
struct vif *vifp;
if (mrtdebug & DEBUG_FORWARD)
log(LOG_DEBUG, "ip_mforward: src %lx, dst %lx, ifp %p\n",
(u_long)ntohl(ip->ip_src.s_addr), (u_long)ntohl(ip->ip_dst.s_addr),
(void *)ifp);
if (ip->ip_hl < (IP_HDR_LEN + TUNNEL_LEN) >> 2 ||
(ipoptions = (u_char *)(ip + 1))[1] != IPOPT_LSRR ) {
} else {
if ((srctun++ % 1000) == 0)
log(LOG_ERR,
"ip_mforward: received source-routed packet from %lx\n",
(u_long)ntohl(ip->ip_src.s_addr));
return 1;
}
if ((imo) && ((vifi = imo->imo_multicast_vif) < numvifs)) {
if (ip->ip_ttl < 255)
ip->ip_ttl++;
if (rsvpdebug && ip->ip_p == IPPROTO_RSVP) {
vifp = viftable + vifi;
printf("Sending IPPROTO_RSVP from %lx to %lx on vif %d (%s%s%d)\n",
ntohl(ip->ip_src.s_addr), ntohl(ip->ip_dst.s_addr), vifi,
(vifp->v_flags & VIFF_TUNNEL) ? "tunnel on " : "",
vifp->v_ifp->if_name, vifp->v_ifp->if_unit);
}
return (ip_mdq(m, ifp, NULL, vifi));
}
if (rsvpdebug && ip->ip_p == IPPROTO_RSVP) {
printf("Warning: IPPROTO_RSVP from %lx to %lx without vif option\n",
ntohl(ip->ip_src.s_addr), ntohl(ip->ip_dst.s_addr));
if(!imo)
printf("In fact, no options were specified at all\n");
}
if (ip->ip_ttl <= 1 ||
ntohl(ip->ip_dst.s_addr) <= INADDR_MAX_LOCAL_GROUP)
return 0;
s = splnet();
MFCFIND(ip->ip_src.s_addr, ip->ip_dst.s_addr, rt);
if (rt != NULL) {
splx(s);
return (ip_mdq(m, ifp, rt, -1));
} else {
register struct mbuf *mb0;
register struct rtdetq *rte;
register u_long hash;
int hlen = ip->ip_hl << 2;
#if UPCALL_TIMING
struct timeval tp;
GET_TIME(tp);
#endif
mrtstat.mrts_no_route++;
if (mrtdebug & (DEBUG_FORWARD | DEBUG_MFC))
log(LOG_DEBUG, "ip_mforward: no rte s %lx g %lx\n",
(u_long)ntohl(ip->ip_src.s_addr),
(u_long)ntohl(ip->ip_dst.s_addr));
rte = (struct rtdetq *) _MALLOC((sizeof *rte), M_MRTABLE, M_NOWAIT);
if (rte == NULL) {
splx(s);
return ENOBUFS;
}
mb0 = m_copy(m, 0, M_COPYALL);
if (mb0 && (M_HASCL(mb0) || mb0->m_len < hlen))
mb0 = m_pullup(mb0, hlen);
if (mb0 == NULL) {
FREE(rte, M_MRTABLE);
splx(s);
return ENOBUFS;
}
hash = MFCHASH(ip->ip_src.s_addr, ip->ip_dst.s_addr);
for (rt = mfctable[hash]; rt; rt = rt->mfc_next) {
if ((ip->ip_src.s_addr == rt->mfc_origin.s_addr) &&
(ip->ip_dst.s_addr == rt->mfc_mcastgrp.s_addr) &&
(rt->mfc_stall != NULL))
break;
}
if (rt == NULL) {
int i;
struct igmpmsg *im;
rt = (struct mfc *) _MALLOC(sizeof(*rt), M_MRTABLE, M_NOWAIT);
if (rt == NULL) {
FREE(rte, M_MRTABLE);
m_freem(mb0);
splx(s);
return ENOBUFS;
}
mm = m_copy(mb0, 0, hlen);
if (mm == NULL) {
FREE(rte, M_MRTABLE);
m_freem(mb0);
FREE(rt, M_MRTABLE);
splx(s);
return ENOBUFS;
}
k_igmpsrc.sin_addr = ip->ip_src;
im = mtod(mm, struct igmpmsg *);
im->im_msgtype = IGMPMSG_NOCACHE;
im->im_mbz = 0;
mrtstat.mrts_upcalls++;
if (socket_send(ip_mrouter, mm, &k_igmpsrc) < 0) {
log(LOG_WARNING, "ip_mforward: ip_mrouter socket queue full\n");
++mrtstat.mrts_upq_sockfull;
FREE(rte, M_MRTABLE);
m_freem(mb0);
FREE(rt, M_MRTABLE);
splx(s);
return ENOBUFS;
}
rt->mfc_origin.s_addr = ip->ip_src.s_addr;
rt->mfc_mcastgrp.s_addr = ip->ip_dst.s_addr;
rt->mfc_expire = UPCALL_EXPIRE;
nexpire[hash]++;
for (i = 0; i < numvifs; i++)
rt->mfc_ttls[i] = 0;
rt->mfc_parent = -1;
rt->mfc_next = mfctable[hash];
mfctable[hash] = rt;
rt->mfc_stall = rte;
} else {
int npkts = 0;
struct rtdetq **p;
for (p = &rt->mfc_stall; *p != NULL; p = &(*p)->next)
npkts++;
if (npkts > MAX_UPQ) {
mrtstat.mrts_upq_ovflw++;
FREE(rte, M_MRTABLE);
m_freem(mb0);
splx(s);
return 0;
}
*p = rte;
}
rte->m = mb0;
rte->ifp = ifp;
#if UPCALL_TIMING
rte->t = tp;
#endif
rte->next = NULL;
splx(s);
return 0;
}
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
struct ip_moptions *) = X_ip_mforward;
#endif
static void
expire_upcalls(void *unused)
{
struct rtdetq *rte;
struct mfc *mfc, **nptr;
int i;
int s;
s = splnet();
for (i = 0; i < MFCTBLSIZ; i++) {
if (nexpire[i] == 0)
continue;
nptr = &mfctable[i];
for (mfc = *nptr; mfc != NULL; mfc = *nptr) {
if (mfc->mfc_stall != NULL &&
mfc->mfc_expire != 0 &&
--mfc->mfc_expire == 0) {
if (mrtdebug & DEBUG_EXPIRE)
log(LOG_DEBUG, "expire_upcalls: expiring (%lx %lx)\n",
(u_long)ntohl(mfc->mfc_origin.s_addr),
(u_long)ntohl(mfc->mfc_mcastgrp.s_addr));
for (rte = mfc->mfc_stall; rte; ) {
struct rtdetq *n = rte->next;
m_freem(rte->m);
FREE(rte, M_MRTABLE);
rte = n;
}
++mrtstat.mrts_cache_cleanups;
nexpire[i]--;
*nptr = mfc->mfc_next;
FREE(mfc, M_MRTABLE);
} else {
nptr = &mfc->mfc_next;
}
}
}
splx(s);
timeout(expire_upcalls, (caddr_t)NULL, EXPIRE_TIMEOUT);
}
static int
ip_mdq(m, ifp, rt, xmt_vif)
register struct mbuf *m;
register struct ifnet *ifp;
register struct mfc *rt;
register vifi_t xmt_vif;
{
register struct ip *ip = mtod(m, struct ip *);
register vifi_t vifi;
register struct vif *vifp;
register int plen = ip->ip_len;
#define MC_SEND(ip,vifp,m) { \
if ((vifp)->v_flags & VIFF_TUNNEL) \
encap_send((ip), (vifp), (m)); \
else \
phyint_send((ip), (vifp), (m)); \
}
if (xmt_vif < numvifs) {
MC_SEND(ip, viftable + xmt_vif, m);
return 1;
}
vifi = rt->mfc_parent;
if ((vifi >= numvifs) || (viftable[vifi].v_ifp != ifp)) {
if (mrtdebug & DEBUG_FORWARD)
log(LOG_DEBUG, "wrong if: ifp %p vifi %d vififp %p\n",
(void *)ifp, vifi, (void *)viftable[vifi].v_ifp);
++mrtstat.mrts_wrong_if;
++rt->mfc_wrong_if;
if (pim_assert && rt->mfc_ttls[vifi] &&
(ifp->if_flags & IFF_BROADCAST) &&
!(viftable[vifi].v_flags & VIFF_TUNNEL)) {
struct sockaddr_in k_igmpsrc;
struct mbuf *mm;
struct igmpmsg *im;
int hlen = ip->ip_hl << 2;
struct timeval now;
register u_long delta;
GET_TIME(now);
TV_DELTA(rt->mfc_last_assert, now, delta);
if (delta > ASSERT_MSG_TIME) {
mm = m_copy(m, 0, hlen);
if (mm && (M_HASCL(mm) || mm->m_len < hlen))
mm = m_pullup(mm, hlen);
if (mm == NULL) {
return ENOBUFS;
}
rt->mfc_last_assert = now;
im = mtod(mm, struct igmpmsg *);
im->im_msgtype = IGMPMSG_WRONGVIF;
im->im_mbz = 0;
im->im_vif = vifi;
k_igmpsrc.sin_addr = im->im_src;
socket_send(ip_mrouter, mm, &k_igmpsrc);
}
}
return 0;
}
if (ip->ip_src.s_addr == viftable[vifi].v_lcl_addr.s_addr) {
viftable[vifi].v_pkt_out++;
viftable[vifi].v_bytes_out += plen;
} else {
viftable[vifi].v_pkt_in++;
viftable[vifi].v_bytes_in += plen;
}
rt->mfc_pkt_cnt++;
rt->mfc_byte_cnt += plen;
for (vifp = viftable, vifi = 0; vifi < numvifs; vifp++, vifi++)
if ((rt->mfc_ttls[vifi] > 0) &&
(ip->ip_ttl > rt->mfc_ttls[vifi])) {
vifp->v_pkt_out++;
vifp->v_bytes_out += plen;
MC_SEND(ip, vifp, m);
}
return 0;
}
static int
X_legal_vif_num(vif)
int vif;
{
if (vif >= 0 && vif < numvifs)
return(1);
else
return(0);
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
int (*legal_vif_num)(int) = X_legal_vif_num;
#endif
static u_long
X_ip_mcast_src(vifi)
int vifi;
{
if (vifi >= 0 && vifi < numvifs)
return viftable[vifi].v_lcl_addr.s_addr;
else
return INADDR_ANY;
}
#if !defined(MROUTE_LKM) || !MROUTE_LKM
u_long (*ip_mcast_src)(int) = X_ip_mcast_src;
#endif
static void
phyint_send(ip, vifp, m)
struct ip *ip;
struct vif *vifp;
struct mbuf *m;
{
register struct mbuf *mb_copy;
register int hlen = ip->ip_hl << 2;
mb_copy = m_copy(m, 0, M_COPYALL);
if (mb_copy && (M_HASCL(mb_copy) || mb_copy->m_len < hlen))
mb_copy = m_pullup(mb_copy, hlen);
if (mb_copy == NULL)
return;
if (vifp->v_rate_limit == 0)
tbf_send_packet(vifp, mb_copy);
else
tbf_control(vifp, mb_copy, mtod(mb_copy, struct ip *), ip->ip_len);
}
static void
encap_send(ip, vifp, m)
register struct ip *ip;
register struct vif *vifp;
register struct mbuf *m;
{
register struct mbuf *mb_copy;
register struct ip *ip_copy;
register int i, len = ip->ip_len;
MGETHDR(mb_copy, M_DONTWAIT, MT_HEADER);
if (mb_copy == NULL)
return;
mb_copy->m_data += max_linkhdr;
mb_copy->m_len = sizeof(multicast_encap_iphdr);
if ((mb_copy->m_next = m_copy(m, 0, M_COPYALL)) == NULL) {
m_freem(mb_copy);
return;
}
i = MHLEN - M_LEADINGSPACE(mb_copy);
if (i > len)
i = len;
mb_copy = m_pullup(mb_copy, i);
if (mb_copy == NULL)
return;
mb_copy->m_pkthdr.len = len + sizeof(multicast_encap_iphdr);
ip_copy = mtod(mb_copy, struct ip *);
*ip_copy = multicast_encap_iphdr;
#if RANDOM_IP_ID
ip_copy->ip_id = ip_randomid();
#else
ip_copy->ip_id = htons(ip_id++);
#endif
ip_copy->ip_len += len;
ip_copy->ip_src = vifp->v_lcl_addr;
ip_copy->ip_dst = vifp->v_rmt_addr;
ip = (struct ip *)((caddr_t)ip_copy + sizeof(multicast_encap_iphdr));
--ip->ip_ttl;
HTONS(ip->ip_len);
HTONS(ip->ip_off);
ip->ip_sum = 0;
mb_copy->m_data += sizeof(multicast_encap_iphdr);
ip->ip_sum = in_cksum(mb_copy, ip->ip_hl << 2);
mb_copy->m_data -= sizeof(multicast_encap_iphdr);
if (vifp->v_rate_limit == 0)
tbf_send_packet(vifp, mb_copy);
else
tbf_control(vifp, mb_copy, ip, ip_copy->ip_len);
}
void
#if MROUTE_LKM
X_ipip_input(m, iphlen)
#else
ipip_input(m, iphlen)
#endif
register struct mbuf *m;
int iphlen;
{
struct ifnet *ifp = m->m_pkthdr.rcvif;
register struct ip *ip = mtod(m, struct ip *);
register int hlen = ip->ip_hl << 2;
register struct vif *vifp;
if (!have_encap_tunnel) {
rip_input(m, iphlen);
return;
}
if (! IN_MULTICAST(ntohl(((struct ip *)((char *)ip + hlen))->ip_dst.s_addr))) {
++mrtstat.mrts_bad_tunnel;
m_freem(m);
return;
}
if (ip->ip_src.s_addr != last_encap_src) {
register struct vif *vife;
vifp = viftable;
vife = vifp + numvifs;
last_encap_src = ip->ip_src.s_addr;
last_encap_vif = 0;
for ( ; vifp < vife; ++vifp)
if (vifp->v_rmt_addr.s_addr == ip->ip_src.s_addr) {
if ((vifp->v_flags & (VIFF_TUNNEL|VIFF_SRCRT))
== VIFF_TUNNEL)
last_encap_vif = vifp;
break;
}
}
if ((vifp = last_encap_vif) == 0) {
last_encap_src = 0;
mrtstat.mrts_cant_tunnel++;
m_freem(m);
if (mrtdebug)
log(LOG_DEBUG, "ip_mforward: no tunnel with %lx\n",
(u_long)ntohl(ip->ip_src.s_addr));
return;
}
ifp = vifp->v_ifp;
if (hlen > IP_HDR_LEN)
ip_stripoptions(m, (struct mbuf *) 0);
m->m_data += IP_HDR_LEN;
m->m_len -= IP_HDR_LEN;
m->m_pkthdr.len -= IP_HDR_LEN;
m->m_pkthdr.rcvif = ifp;
proto_inject(PF_INET, m);
}
static void
tbf_control(vifp, m, ip, p_len)
register struct vif *vifp;
register struct mbuf *m;
register struct ip *ip;
register u_long p_len;
{
register struct tbf *t = vifp->v_tbf;
if (p_len > MAX_BKT_SIZE) {
mrtstat.mrts_pkt2large++;
m_freem(m);
return;
}
tbf_update_tokens(vifp);
if (t->tbf_q_len == 0) {
if (p_len <= t->tbf_n_tok) {
t->tbf_n_tok -= p_len;
tbf_send_packet(vifp, m);
} else {
tbf_queue(vifp, m);
timeout(tbf_reprocess_q, (caddr_t)vifp, TBF_REPROCESS);
}
} else if (t->tbf_q_len < t->tbf_max_q_len) {
tbf_queue(vifp, m);
tbf_process_q(vifp);
} else {
if (!tbf_dq_sel(vifp, ip)) {
mrtstat.mrts_q_overflow++;
m_freem(m);
return;
} else {
tbf_queue(vifp, m);
tbf_process_q(vifp);
}
}
return;
}
static void
tbf_queue(vifp, m)
register struct vif *vifp;
register struct mbuf *m;
{
register int s = splnet();
register struct tbf *t = vifp->v_tbf;
if (t->tbf_t == NULL) {
t->tbf_q = m;
} else {
t->tbf_t->m_act = m;
}
t->tbf_t = m;
#if DIAGNOSTIC
if (m->m_act)
panic("tbf_queue: m_act");
#endif
m->m_act = NULL;
t->tbf_q_len++;
splx(s);
}
static void
tbf_process_q(vifp)
register struct vif *vifp;
{
register struct mbuf *m;
register int len;
register int s = splnet();
register struct tbf *t = vifp->v_tbf;
while (t->tbf_q_len > 0) {
m = t->tbf_q;
len = mtod(m, struct ip *)->ip_len;
if (len <= t->tbf_n_tok) {
t->tbf_n_tok -= len;
t->tbf_q = m->m_act;
if (--t->tbf_q_len == 0)
t->tbf_t = NULL;
m->m_act = NULL;
tbf_send_packet(vifp, m);
} else break;
}
splx(s);
}
static void
tbf_reprocess_q(xvifp)
void *xvifp;
{
register struct vif *vifp = xvifp;
if (ip_mrouter == NULL) {
return;
}
tbf_update_tokens(vifp);
tbf_process_q(vifp);
if (vifp->v_tbf->tbf_q_len)
timeout(tbf_reprocess_q, (caddr_t)vifp, TBF_REPROCESS);
}
static int
tbf_dq_sel(vifp, ip)
register struct vif *vifp;
register struct ip *ip;
{
register int s = splnet();
register u_int p;
register struct mbuf *m, *last;
register struct mbuf **np;
register struct tbf *t = vifp->v_tbf;
p = priority(vifp, ip);
np = &t->tbf_q;
last = NULL;
while ((m = *np) != NULL) {
if (p > priority(vifp, mtod(m, struct ip *))) {
*np = m->m_act;
if (m == t->tbf_t)
t->tbf_t = last;
m_freem(m);
if (--t->tbf_q_len == 0)
t->tbf_t = NULL;
splx(s);
mrtstat.mrts_drop_sel++;
return(1);
}
np = &m->m_act;
last = m;
}
splx(s);
return(0);
}
static void
tbf_send_packet(vifp, m)
register struct vif *vifp;
register struct mbuf *m;
{
struct ip_moptions imo;
int error;
static struct route ro;
int s = splnet();
if (vifp->v_flags & VIFF_TUNNEL) {
ip_output(m, (struct mbuf *)0, &vifp->v_route,
IP_FORWARDING, (struct ip_moptions *)0);
} else {
imo.imo_multicast_ifp = vifp->v_ifp;
imo.imo_multicast_ttl = mtod(m, struct ip *)->ip_ttl - 1;
imo.imo_multicast_loop = 1;
imo.imo_multicast_vif = -1;
error = ip_output(m, (struct mbuf *)0, &ro,
IP_FORWARDING, &imo);
if (mrtdebug & DEBUG_XMIT)
log(LOG_DEBUG, "phyint_send on vif %d err %d\n",
vifp - viftable, error);
}
splx(s);
}
static void
tbf_update_tokens(vifp)
register struct vif *vifp;
{
struct timeval tp;
register u_long tm;
register int s = splnet();
register struct tbf *t = vifp->v_tbf;
GET_TIME(tp);
TV_DELTA(tp, t->tbf_last_pkt_t, tm);
t->tbf_n_tok += tm * vifp->v_rate_limit / 1024 / 8;
t->tbf_last_pkt_t = tp;
if (t->tbf_n_tok > MAX_BKT_SIZE)
t->tbf_n_tok = MAX_BKT_SIZE;
splx(s);
}
static int
priority(vifp, ip)
register struct vif *vifp;
register struct ip *ip;
{
register int prio;
if (ip->ip_p == IPPROTO_UDP) {
struct udphdr *udp = (struct udphdr *)(((char *)ip) + (ip->ip_hl << 2));
switch (ntohs(udp->uh_dport) & 0xc000) {
case 0x4000:
prio = 70;
break;
case 0x8000:
prio = 60;
break;
case 0xc000:
prio = 55;
break;
default:
prio = 50;
break;
}
if (tbfdebug > 1)
log(LOG_DEBUG, "port %x prio%d\n", ntohs(udp->uh_dport), prio);
} else {
prio = 50;
}
return prio;
}
int
ip_rsvp_vif_init(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
int error, i, s;
if (rsvpdebug)
printf("ip_rsvp_vif_init: so_type = %d, pr_protocol = %d\n",
so->so_type, so->so_proto->pr_protocol);
if (so->so_type != SOCK_RAW || so->so_proto->pr_protocol != IPPROTO_RSVP)
return EOPNOTSUPP;
error = sooptcopyin(sopt, &i, sizeof i, sizeof i);
if (error)
return (error);
if (rsvpdebug)
printf("ip_rsvp_vif_init: vif = %d rsvp_on = %d\n", i, rsvp_on);
s = splnet();
if (!legal_vif_num(i)) {
splx(s);
return EADDRNOTAVAIL;
}
if (viftable[i].v_rsvpd != NULL) {
splx(s);
return EADDRINUSE;
}
viftable[i].v_rsvpd = so;
if (!viftable[i].v_rsvp_on) {
viftable[i].v_rsvp_on = 1;
rsvp_on++;
}
splx(s);
return 0;
}
int
ip_rsvp_vif_done(so, sopt)
struct socket *so;
struct sockopt *sopt;
{
int error, i, s;
if (rsvpdebug)
printf("ip_rsvp_vif_done: so_type = %d, pr_protocol = %d\n",
so->so_type, so->so_proto->pr_protocol);
if (so->so_type != SOCK_RAW ||
so->so_proto->pr_protocol != IPPROTO_RSVP)
return EOPNOTSUPP;
error = sooptcopyin(sopt, &i, sizeof i, sizeof i);
if (error)
return (error);
s = splnet();
if (!legal_vif_num(i)) {
splx(s);
return EADDRNOTAVAIL;
}
if (rsvpdebug)
printf("ip_rsvp_vif_done: v_rsvpd = %p so = %p\n",
viftable[i].v_rsvpd, so);
viftable[i].v_rsvpd = NULL;
if (viftable[i].v_rsvp_on) {
viftable[i].v_rsvp_on = 0;
rsvp_on--;
}
splx(s);
return 0;
}
void
ip_rsvp_force_done(so)
struct socket *so;
{
int vifi;
register int s;
if (so->so_type != SOCK_RAW || so->so_proto->pr_protocol != IPPROTO_RSVP)
return;
s = splnet();
for (vifi = 0; vifi < numvifs; vifi++) {
if (viftable[vifi].v_rsvpd == so) {
viftable[vifi].v_rsvpd = NULL;
if (viftable[vifi].v_rsvp_on) {
viftable[vifi].v_rsvp_on = 0;
rsvp_on--;
}
}
}
splx(s);
return;
}
void
rsvp_input(m, iphlen)
struct mbuf *m;
int iphlen;
{
int vifi;
register struct ip *ip = mtod(m, struct ip *);
static struct sockaddr_in rsvp_src = { sizeof rsvp_src, AF_INET };
register int s;
struct ifnet *ifp;
if (rsvpdebug)
printf("rsvp_input: rsvp_on %d\n",rsvp_on);
if (!rsvp_on) {
m_freem(m);
return;
}
s = splnet();
if (rsvpdebug)
printf("rsvp_input: check vifs\n");
#if DIAGNOSTIC
if (!(m->m_flags & M_PKTHDR))
panic("rsvp_input no hdr");
#endif
ifp = m->m_pkthdr.rcvif;
for (vifi = 0; vifi < numvifs; vifi++)
if (viftable[vifi].v_ifp == ifp)
break;
if (vifi == numvifs || viftable[vifi].v_rsvpd == NULL) {
if (ip_rsvpd != NULL) {
if (rsvpdebug)
printf("rsvp_input: Sending packet up old-style socket\n");
rip_input(m, iphlen);
} else {
if (rsvpdebug && vifi == numvifs)
printf("rsvp_input: Can't find vif for packet.\n");
else if (rsvpdebug && viftable[vifi].v_rsvpd == NULL)
printf("rsvp_input: No socket defined for vif %d\n",vifi);
m_freem(m);
}
splx(s);
return;
}
rsvp_src.sin_addr = ip->ip_src;
if (rsvpdebug && m)
printf("rsvp_input: m->m_len = %d, sbspace() = %ld\n",
m->m_len,sbspace(&(viftable[vifi].v_rsvpd->so_rcv)));
if (socket_send(viftable[vifi].v_rsvpd, m, &rsvp_src) < 0) {
if (rsvpdebug)
printf("rsvp_input: Failed to append to socket\n");
} else {
if (rsvpdebug)
printf("rsvp_input: send packet up\n");
}
splx(s);
}
#if MROUTE_LKM
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/sysent.h>
#include <sys/lkm.h>
MOD_MISC("ip_mroute_mod")
static int
ip_mroute_mod_handle(struct lkm_table *lkmtp, int cmd)
{
int i;
struct lkm_misc *args = lkmtp->private.lkm_misc;
int err = 0;
switch(cmd) {
static int (*old_ip_mrouter_cmd)();
static int (*old_ip_mrouter_done)();
static int (*old_ip_mforward)();
static int (*old_mrt_ioctl)();
static void (*old_proto4_input)();
static int (*old_legal_vif_num)();
extern struct protosw inetsw[];
case LKM_E_LOAD:
if(lkmexists(lkmtp) || ip_mrtproto)
return(EEXIST);
old_ip_mrouter_cmd = ip_mrouter_cmd;
ip_mrouter_cmd = X_ip_mrouter_cmd;
old_ip_mrouter_done = ip_mrouter_done;
ip_mrouter_done = X_ip_mrouter_done;
old_ip_mforward = ip_mforward;
ip_mforward = X_ip_mforward;
old_mrt_ioctl = mrt_ioctl;
mrt_ioctl = X_mrt_ioctl;
old_proto4_input = ip_protox[ENCAP_PROTO]->pr_input;
ip_protox[ENCAP_PROTO]->pr_input = X_ipip_input;
old_legal_vif_num = legal_vif_num;
legal_vif_num = X_legal_vif_num;
ip_mrtproto = IGMP_DVMRP;
printf("\nIP multicast routing loaded\n");
break;
case LKM_E_UNLOAD:
if (ip_mrouter)
return EINVAL;
ip_mrouter_cmd = old_ip_mrouter_cmd;
ip_mrouter_done = old_ip_mrouter_done;
ip_mforward = old_ip_mforward;
mrt_ioctl = old_mrt_ioctl;
ip_protox[ENCAP_PROTO]->pr_input = old_proto4_input;
legal_vif_num = old_legal_vif_num;
ip_mrtproto = 0;
break;
default:
err = EINVAL;
break;
}
return(err);
}
int
ip_mroute_mod(struct lkm_table *lkmtp, int cmd, int ver) {
DISPATCH(lkmtp, cmd, ver, ip_mroute_mod_handle, ip_mroute_mod_handle,
nosys);
}
#endif
#endif