version 1.96, 2000/02/01 00:07:09 |
version 1.115, 2000/06/28 03:01:16 |
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#include <sys/proc.h> |
#include <sys/proc.h> |
#include <sys/pool.h> |
#include <sys/pool.h> |
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#include <vm/vm.h> |
#include <uvm/uvm_extern.h> |
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#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
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#include <net/if.h> |
#include <net/if.h> |
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#include <netinet/in_gif.h> |
#include <netinet/in_gif.h> |
#include "gif.h" |
#include "gif.h" |
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#ifdef MROUTING |
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#include <netinet/ip_mroute.h> |
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#endif |
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#ifdef IPSEC |
#ifdef IPSEC |
#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#include <netkey/key.h> |
#include <netkey/key.h> |
Line 194 int ipprintfs = 0; |
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Line 199 int ipprintfs = 0; |
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struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
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extern struct domain inetdomain; |
extern struct domain inetdomain; |
extern struct protosw inetsw[]; |
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u_char ip_protox[IPPROTO_MAX]; |
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int ipqmaxlen = IFQ_MAXLEN; |
int ipqmaxlen = IFQ_MAXLEN; |
struct in_ifaddrhead in_ifaddr; |
struct in_ifaddrhead in_ifaddr; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
struct ifqueue ipintrq; |
struct ifqueue ipintrq; |
struct ipstat ipstat; |
struct ipstat ipstat; |
u_int16_t ip_id; |
u_int16_t ip_id; |
int ip_defttl; |
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struct ipqhead ipq; |
struct ipqhead ipq; |
int ipq_locked; |
int ipq_locked; |
Line 283 static void save_rte __P((u_char *, stru |
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Line 285 static void save_rte __P((u_char *, stru |
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void |
void |
ip_init() |
ip_init() |
{ |
{ |
register struct protosw *pr; |
struct protosw *pr; |
register int i; |
int i; |
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pool_init(&ipqent_pool, sizeof(struct ipqent), 0, 0, 0, "ipqepl", |
pool_init(&ipqent_pool, sizeof(struct ipqent), 0, 0, 0, "ipqepl", |
0, NULL, NULL, M_IPQ); |
0, NULL, NULL, M_IPQ); |
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void |
void |
ip_input(struct mbuf *m) |
ip_input(struct mbuf *m) |
{ |
{ |
register struct ip *ip = NULL; |
struct ip *ip = NULL; |
register struct ipq *fp; |
struct ipq *fp; |
register struct in_ifaddr *ia; |
struct in_ifaddr *ia; |
register struct ifaddr *ifa; |
struct ifaddr *ifa; |
struct ipqent *ipqe; |
struct ipqent *ipqe; |
int hlen = 0, mff, len; |
int hlen = 0, mff, len; |
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int downmatch; |
#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
struct packet_filter_hook *pfh; |
struct packet_filter_hook *pfh; |
struct mbuf *m0; |
struct mbuf *m0; |
Line 397 ip_input(struct mbuf *m) |
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Line 400 ip_input(struct mbuf *m) |
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} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
} |
} |
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/* |
/* |
* we drop packets that have a multicast address as source |
* RFC1122: packets with a multicast source address are |
* as wanted by rfc 1112 |
* not allowed. |
*/ |
*/ |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
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/* XXX stat */ |
goto bad; |
goto bad; |
} |
} |
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Line 463 ip_input(struct mbuf *m) |
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Line 468 ip_input(struct mbuf *m) |
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* in the list may have previously cleared it. |
* in the list may have previously cleared it. |
*/ |
*/ |
m0 = m; |
m0 = m; |
for (pfh = pfil_hook_get(PFIL_IN); pfh; pfh = pfh->pfil_link.tqe_next) |
pfh = pfil_hook_get(PFIL_IN, &inetsw[ip_protox[IPPROTO_IP]].pr_pfh); |
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for (; pfh; pfh = pfh->pfil_link.tqe_next) |
if (pfh->pfil_func) { |
if (pfh->pfil_func) { |
rv = pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 0, &m0); |
rv = pfh->pfil_func(ip, hlen, |
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m->m_pkthdr.rcvif, 0, &m0); |
if (rv) |
if (rv) |
return; |
return; |
m = m0; |
m = m0; |
Line 487 ip_input(struct mbuf *m) |
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Line 494 ip_input(struct mbuf *m) |
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/* |
/* |
* Check our list of addresses, to see if the packet is for us. |
* Check our list of addresses, to see if the packet is for us. |
*/ |
* |
INADDR_TO_IA(ip->ip_dst, ia); |
* Traditional 4.4BSD did not consult IFF_UP at all. |
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* The behavior here is to treat addresses on !IFF_UP interface |
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* as not mine. |
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*/ |
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downmatch = 0; |
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for (ia = IN_IFADDR_HASH(ip->ip_dst.s_addr).lh_first; |
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ia != NULL; |
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ia = ia->ia_hash.le_next) { |
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if (in_hosteq(ia->ia_addr.sin_addr, ip->ip_dst)) { |
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if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
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break; |
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else |
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downmatch++; |
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} |
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} |
if (ia != NULL) |
if (ia != NULL) |
goto ours; |
goto ours; |
if (m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
if (m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
Line 577 ip_input(struct mbuf *m) |
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Line 598 ip_input(struct mbuf *m) |
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if (ipforwarding == 0) { |
if (ipforwarding == 0) { |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
m_freem(m); |
m_freem(m); |
} else |
} else { |
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/* |
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* If ip_dst matched any of my address on !IFF_UP interface, |
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* and there's no IFF_UP interface that matches ip_dst, |
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* send icmp unreach. Forwarding it will result in in-kernel |
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* forwarding loop till TTL goes to 0. |
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*/ |
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if (downmatch) { |
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icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
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ipstat.ips_cantforward++; |
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return; |
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} |
ip_forward(m, 0); |
ip_forward(m, 0); |
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} |
return; |
return; |
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ours: |
ours: |
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*/ |
*/ |
struct mbuf * |
struct mbuf * |
ip_reass(ipqe, fp) |
ip_reass(ipqe, fp) |
register struct ipqent *ipqe; |
struct ipqent *ipqe; |
register struct ipq *fp; |
struct ipq *fp; |
{ |
{ |
register struct mbuf *m = ipqe->ipqe_m; |
struct mbuf *m = ipqe->ipqe_m; |
register struct ipqent *nq, *p, *q; |
struct ipqent *nq, *p, *q; |
struct ip *ip; |
struct ip *ip; |
struct mbuf *t; |
struct mbuf *t; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
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* Make header visible. |
* Make header visible. |
*/ |
*/ |
ip->ip_len = next; |
ip->ip_len = next; |
ip->ip_ttl = 0; /* xxx */ |
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ip->ip_sum = 0; |
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ip->ip_src = fp->ipq_src; |
ip->ip_src = fp->ipq_src; |
ip->ip_dst = fp->ipq_dst; |
ip->ip_dst = fp->ipq_dst; |
LIST_REMOVE(fp, ipq_q); |
LIST_REMOVE(fp, ipq_q); |
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m->m_data -= (ip->ip_hl << 2); |
m->m_data -= (ip->ip_hl << 2); |
/* some debugging cruft by sklower, below, will go away soon */ |
/* some debugging cruft by sklower, below, will go away soon */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
register int plen = 0; |
int plen = 0; |
for (t = m; t; t = t->m_next) |
for (t = m; t; t = t->m_next) |
plen += t->m_len; |
plen += t->m_len; |
m->m_pkthdr.len = plen; |
m->m_pkthdr.len = plen; |
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ip_freef(fp) |
ip_freef(fp) |
struct ipq *fp; |
struct ipq *fp; |
{ |
{ |
register struct ipqent *q, *p; |
struct ipqent *q, *p; |
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IPQ_LOCK_CHECK(); |
IPQ_LOCK_CHECK(); |
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void |
void |
ip_slowtimo() |
ip_slowtimo() |
{ |
{ |
register struct ipq *fp, *nfp; |
struct ipq *fp, *nfp; |
int s = splsoftnet(); |
int s = splsoftnet(); |
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IPQ_LOCK(); |
IPQ_LOCK(); |
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ip_dooptions(m) |
ip_dooptions(m) |
struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
register struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
register u_char *cp; |
u_char *cp, *cp0; |
register struct ip_timestamp *ipt; |
struct ip_timestamp *ipt; |
register struct in_ifaddr *ia; |
struct in_ifaddr *ia; |
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
struct in_addr *sin, dst; |
struct in_addr dst; |
n_time ntime; |
n_time ntime; |
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dst = ip->ip_dst; |
dst = ip->ip_dst; |
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if (opt == IPOPT_NOP) |
if (opt == IPOPT_NOP) |
optlen = 1; |
optlen = 1; |
else { |
else { |
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if (cnt < IPOPT_OLEN + sizeof(*cp)) { |
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code = &cp[IPOPT_OLEN] - (u_char *)ip; |
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goto bad; |
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} |
optlen = cp[IPOPT_OLEN]; |
optlen = cp[IPOPT_OLEN]; |
if (optlen <= 0 || optlen > cnt) { |
if (optlen < IPOPT_OLEN + sizeof(*cp) || optlen > cnt) { |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
goto bad; |
goto bad; |
} |
} |
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code = ICMP_UNREACH_NET_PROHIB; |
code = ICMP_UNREACH_NET_PROHIB; |
goto bad; |
goto bad; |
} |
} |
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if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
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code = &cp[IPOPT_OLEN] - (u_char *)ip; |
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goto bad; |
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} |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
goto bad; |
goto bad; |
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Line 1022 ip_dooptions(m) |
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break; |
break; |
} |
} |
off--; /* 0 origin */ |
off--; /* 0 origin */ |
if (off > optlen - sizeof(struct in_addr)) { |
if ((off + sizeof(struct in_addr)) > optlen) { |
/* |
/* |
* End of source route. Should be for us. |
* End of source route. Should be for us. |
*/ |
*/ |
Line 1015 ip_dooptions(m) |
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Line 1054 ip_dooptions(m) |
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break; |
break; |
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case IPOPT_RR: |
case IPOPT_RR: |
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if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
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code = &cp[IPOPT_OLEN] - (u_char *)ip; |
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goto bad; |
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} |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
goto bad; |
goto bad; |
Line 1023 ip_dooptions(m) |
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Line 1066 ip_dooptions(m) |
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* If no space remains, ignore. |
* If no space remains, ignore. |
*/ |
*/ |
off--; /* 0 origin */ |
off--; /* 0 origin */ |
if (off > optlen - sizeof(struct in_addr)) |
if ((off + sizeof(struct in_addr)) > optlen) |
break; |
break; |
bcopy((caddr_t)(&ip->ip_dst), (caddr_t)&ipaddr.sin_addr, |
bcopy((caddr_t)(&ip->ip_dst), (caddr_t)&ipaddr.sin_addr, |
sizeof(ipaddr.sin_addr)); |
sizeof(ipaddr.sin_addr)); |
Line 1046 ip_dooptions(m) |
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Line 1089 ip_dooptions(m) |
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case IPOPT_TS: |
case IPOPT_TS: |
code = cp - (u_char *)ip; |
code = cp - (u_char *)ip; |
ipt = (struct ip_timestamp *)cp; |
ipt = (struct ip_timestamp *)cp; |
if (ipt->ipt_len < 5) |
if (ipt->ipt_len < 4 || ipt->ipt_len > 40) { |
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code = (u_char *)&ipt->ipt_len - (u_char *)ip; |
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goto bad; |
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} |
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if (ipt->ipt_ptr < 5) { |
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code = (u_char *)&ipt->ipt_ptr - (u_char *)ip; |
goto bad; |
goto bad; |
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} |
if (ipt->ipt_ptr > ipt->ipt_len - sizeof (int32_t)) { |
if (ipt->ipt_ptr > ipt->ipt_len - sizeof (int32_t)) { |
if (++ipt->ipt_oflw == 0) |
if (++ipt->ipt_oflw == 0) { |
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code = (u_char *)&ipt->ipt_ptr - |
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(u_char *)ip; |
goto bad; |
goto bad; |
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} |
break; |
break; |
} |
} |
sin = (struct in_addr *)(cp + ipt->ipt_ptr - 1); |
cp0 = (cp + ipt->ipt_ptr - 1); |
switch (ipt->ipt_flg) { |
switch (ipt->ipt_flg) { |
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case IPOPT_TS_TSONLY: |
case IPOPT_TS_TSONLY: |
Line 1061 ip_dooptions(m) |
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Line 1113 ip_dooptions(m) |
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case IPOPT_TS_TSANDADDR: |
case IPOPT_TS_TSANDADDR: |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
sizeof(struct in_addr) > ipt->ipt_len) |
sizeof(struct in_addr) > ipt->ipt_len) { |
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code = (u_char *)&ipt->ipt_ptr - |
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(u_char *)ip; |
goto bad; |
goto bad; |
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} |
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
m->m_pkthdr.rcvif)); |
m->m_pkthdr.rcvif)); |
if (ia == 0) |
if (ia == 0) |
continue; |
continue; |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
bcopy(&ia->ia_addr.sin_addr, |
(caddr_t)sin, sizeof(struct in_addr)); |
cp0, sizeof(struct in_addr)); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
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case IPOPT_TS_PRESPEC: |
case IPOPT_TS_PRESPEC: |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
sizeof(struct in_addr) > ipt->ipt_len) |
sizeof(struct in_addr) > ipt->ipt_len) { |
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code = (u_char *)&ipt->ipt_ptr - |
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(u_char *)ip; |
goto bad; |
goto bad; |
bcopy((caddr_t)sin, (caddr_t)&ipaddr.sin_addr, |
} |
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bcopy(cp0, &ipaddr.sin_addr, |
sizeof(struct in_addr)); |
sizeof(struct in_addr)); |
if (ifatoia(ifa_ifwithaddr(sintosa(&ipaddr))) |
if (ifatoia(ifa_ifwithaddr(sintosa(&ipaddr))) |
== NULL) |
== NULL) |
Line 1086 ip_dooptions(m) |
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Line 1144 ip_dooptions(m) |
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break; |
break; |
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default: |
default: |
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/* XXX can't take &ipt->ipt_flg */ |
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code = (u_char *)&ipt->ipt_ptr - |
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(u_char *)ip + 1; |
goto bad; |
goto bad; |
} |
} |
ntime = iptime(); |
ntime = iptime(); |
bcopy((caddr_t)&ntime, (caddr_t)cp + ipt->ipt_ptr - 1, |
cp0 = (u_char *) &ntime; /* XXX grumble, GCC... */ |
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bcopy(cp0, (caddr_t)cp + ipt->ipt_ptr - 1, |
sizeof(n_time)); |
sizeof(n_time)); |
ipt->ipt_ptr += sizeof(n_time); |
ipt->ipt_ptr += sizeof(n_time); |
} |
} |
Line 1118 struct in_ifaddr * |
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Line 1180 struct in_ifaddr * |
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ip_rtaddr(dst) |
ip_rtaddr(dst) |
struct in_addr dst; |
struct in_addr dst; |
{ |
{ |
register struct sockaddr_in *sin; |
struct sockaddr_in *sin; |
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sin = satosin(&ipforward_rt.ro_dst); |
sin = satosin(&ipforward_rt.ro_dst); |
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Line 1169 save_rte(option, dst) |
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Line 1231 save_rte(option, dst) |
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struct mbuf * |
struct mbuf * |
ip_srcroute() |
ip_srcroute() |
{ |
{ |
register struct in_addr *p, *q; |
struct in_addr *p, *q; |
register struct mbuf *m; |
struct mbuf *m; |
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if (ip_nhops == 0) |
if (ip_nhops == 0) |
return ((struct mbuf *)0); |
return ((struct mbuf *)0); |
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*/ |
*/ |
void |
void |
ip_stripoptions(m, mopt) |
ip_stripoptions(m, mopt) |
register struct mbuf *m; |
struct mbuf *m; |
struct mbuf *mopt; |
struct mbuf *mopt; |
{ |
{ |
register int i; |
int i; |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
register caddr_t opts; |
caddr_t opts; |
int olen; |
int olen; |
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olen = (ip->ip_hl << 2) - sizeof (struct ip); |
olen = (ip->ip_hl << 2) - sizeof (struct ip); |
Line 1286 ip_forward(m, srcrt) |
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Line 1348 ip_forward(m, srcrt) |
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struct mbuf *m; |
struct mbuf *m; |
int srcrt; |
int srcrt; |
{ |
{ |
register struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
register struct sockaddr_in *sin; |
struct sockaddr_in *sin; |
register struct rtentry *rt; |
struct rtentry *rt; |
int error, type = 0, code = 0; |
int error, type = 0, code = 0; |
struct mbuf *mcopy; |
struct mbuf *mcopy; |
n_long dest; |
n_long dest; |
Line 1374 ip_forward(m, srcrt) |
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Line 1436 ip_forward(m, srcrt) |
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} |
} |
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#ifdef IPSEC |
#ifdef IPSEC |
m->m_pkthdr.rcvif = NULL; |
/* Don't lookup socket in forwading case */ |
#endif /*IPSEC*/ |
ipsec_setsocket(m, NULL); |
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#endif |
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), 0); |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), 0); |
if (error) |
if (error) |
Line 1485 ip_forward(m, srcrt) |
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Line 1548 ip_forward(m, srcrt) |
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void |
void |
ip_savecontrol(inp, mp, ip, m) |
ip_savecontrol(inp, mp, ip, m) |
register struct inpcb *inp; |
struct inpcb *inp; |
register struct mbuf **mp; |
struct mbuf **mp; |
register struct ip *ip; |
struct ip *ip; |
register struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
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if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
if (inp->inp_socket->so_options & SO_TIMESTAMP) { |