@@ -447,206 +447,6 @@ ip_slowtimo(Slirp *slirp)
}
}
-/*
- * Do option processing on a datagram,
- * possibly discarding it if bad options are encountered,
- * or forwarding it if source-routed.
- * Returns 1 if packet has been forwarded/freed,
- * 0 if the packet should be processed further.
- */
-
-#ifdef notdef
-
-int
-ip_dooptions(m)
- struct mbuf *m;
-{
- register struct ip *ip = mtod(m, struct ip *);
- register u_char *cp;
- register struct ip_timestamp *ipt;
- register struct in_ifaddr *ia;
- int opt, optlen, cnt, off, code, type, forward = 0;
- struct in_addr *sin, dst;
-typedef uint32_t n_time;
- n_time ntime;
-
- dst = ip->ip_dst;
- cp = (u_char *)(ip + 1);
- cnt = (ip->ip_hl << 2) - sizeof (struct ip);
- for (; cnt > 0; cnt -= optlen, cp += optlen) {
- opt = cp[IPOPT_OPTVAL];
- if (opt == IPOPT_EOL)
- break;
- if (opt == IPOPT_NOP)
- optlen = 1;
- else {
- optlen = cp[IPOPT_OLEN];
- if (optlen <= 0 || optlen > cnt) {
- code = &cp[IPOPT_OLEN] - (u_char *)ip;
- goto bad;
- }
- }
- switch (opt) {
-
- default:
- break;
-
- /*
- * Source routing with record.
- * Find interface with current destination address.
- * If none on this machine then drop if strictly routed,
- * or do nothing if loosely routed.
- * Record interface address and bring up next address
- * component. If strictly routed make sure next
- * address is on directly accessible net.
- */
- case IPOPT_LSRR:
- case IPOPT_SSRR:
- if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {
- code = &cp[IPOPT_OFFSET] - (u_char *)ip;
- goto bad;
- }
- ipaddr.sin_addr = ip->ip_dst;
- ia = (struct in_ifaddr *)
- ifa_ifwithaddr((struct sockaddr *)&ipaddr);
- if (ia == 0) {
- if (opt == IPOPT_SSRR) {
- type = ICMP_UNREACH;
- code = ICMP_UNREACH_SRCFAIL;
- goto bad;
- }
- /*
- * Loose routing, and not at next destination
- * yet; nothing to do except forward.
- */
- break;
- }
- off--; /* 0 origin */
- if (off > optlen - sizeof(struct in_addr)) {
- /*
- * End of source route. Should be for us.
- */
- save_rte(cp, ip->ip_src);
- break;
- }
- /*
- * locate outgoing interface
- */
- bcopy((caddr_t)(cp + off), (caddr_t)&ipaddr.sin_addr,
- sizeof(ipaddr.sin_addr));
- if (opt == IPOPT_SSRR) {
-#define INA struct in_ifaddr *
-#define SA struct sockaddr *
- if ((ia = (INA)ifa_ifwithdstaddr((SA)&ipaddr)) == 0)
- ia = (INA)ifa_ifwithnet((SA)&ipaddr);
- } else
- ia = ip_rtaddr(ipaddr.sin_addr);
- if (ia == 0) {
- type = ICMP_UNREACH;
- code = ICMP_UNREACH_SRCFAIL;
- goto bad;
- }
- ip->ip_dst = ipaddr.sin_addr;
- bcopy((caddr_t)&(IA_SIN(ia)->sin_addr),
- (caddr_t)(cp + off), sizeof(struct in_addr));
- cp[IPOPT_OFFSET] += sizeof(struct in_addr);
- /*
- * Let ip_intr's mcast routing check handle mcast pkts
- */
- forward = !IN_MULTICAST(ntohl(ip->ip_dst.s_addr));
- break;
-
- case IPOPT_RR:
- if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {
- code = &cp[IPOPT_OFFSET] - (u_char *)ip;
- goto bad;
- }
- /*
- * If no space remains, ignore.
- */
- off--; /* 0 origin */
- if (off > optlen - sizeof(struct in_addr))
- break;
- bcopy((caddr_t)(&ip->ip_dst), (caddr_t)&ipaddr.sin_addr,
- sizeof(ipaddr.sin_addr));
- /*
- * locate outgoing interface; if we're the destination,
- * use the incoming interface (should be same).
- */
- if ((ia = (INA)ifa_ifwithaddr((SA)&ipaddr)) == 0 &&
- (ia = ip_rtaddr(ipaddr.sin_addr)) == 0) {
- type = ICMP_UNREACH;
- code = ICMP_UNREACH_HOST;
- goto bad;
- }
- bcopy((caddr_t)&(IA_SIN(ia)->sin_addr),
- (caddr_t)(cp + off), sizeof(struct in_addr));
- cp[IPOPT_OFFSET] += sizeof(struct in_addr);
- break;
-
- case IPOPT_TS:
- code = cp - (u_char *)ip;
- ipt = (struct ip_timestamp *)cp;
- if (ipt->ipt_len < 5)
- goto bad;
- if (ipt->ipt_ptr > ipt->ipt_len - sizeof (int32_t)) {
- if (++ipt->ipt_oflw == 0)
- goto bad;
- break;
- }
- sin = (struct in_addr *)(cp + ipt->ipt_ptr - 1);
- switch (ipt->ipt_flg) {
-
- case IPOPT_TS_TSONLY:
- break;
-
- case IPOPT_TS_TSANDADDR:
- if (ipt->ipt_ptr + sizeof(n_time) +
- sizeof(struct in_addr) > ipt->ipt_len)
- goto bad;
- ipaddr.sin_addr = dst;
- ia = (INA)ifaof_ i f p foraddr((SA)&ipaddr,
- m->m_pkthdr.rcvif);
- if (ia == 0)
- continue;
- bcopy((caddr_t)&IA_SIN(ia)->sin_addr,
- (caddr_t)sin, sizeof(struct in_addr));
- ipt->ipt_ptr += sizeof(struct in_addr);
- break;
-
- case IPOPT_TS_PRESPEC:
- if (ipt->ipt_ptr + sizeof(n_time) +
- sizeof(struct in_addr) > ipt->ipt_len)
- goto bad;
- bcopy((caddr_t)sin, (caddr_t)&ipaddr.sin_addr,
- sizeof(struct in_addr));
- if (ifa_ifwithaddr((SA)&ipaddr) == 0)
- continue;
- ipt->ipt_ptr += sizeof(struct in_addr);
- break;
-
- default:
- goto bad;
- }
- ntime = iptime();
- bcopy((caddr_t)&ntime, (caddr_t)cp + ipt->ipt_ptr - 1,
- sizeof(n_time));
- ipt->ipt_ptr += sizeof(n_time);
- }
- }
- if (forward) {
- ip_forward(m, 1);
- return (1);
- }
- return (0);
-bad:
- icmp_send_error(m, type, code, 0, 0);
-
- return (1);
-}
-
-#endif /* notdef */
-
/*
* Strip out IP options, at higher
* level protocol in the kernel.
@@ -1441,45 +1441,6 @@ tcp_dooptions(struct tcpcb *tp, u_char *cp, int cnt, struct tcpiphdr *ti)
}
}
-
-/*
- * Pull out of band byte out of a segment so
- * it doesn't appear in the user's data queue.
- * It is still reflected in the segment length for
- * sequencing purposes.
- */
-
-#ifdef notdef
-
-void
-tcp_pulloutofband(so, ti, m)
- struct socket *so;
- struct tcpiphdr *ti;
- register struct mbuf *m;
-{
- int cnt = ti->ti_urp - 1;
-
- while (cnt >= 0) {
- if (m->m_len > cnt) {
- char *cp = mtod(m, caddr_t) + cnt;
- struct tcpcb *tp = sototcpcb(so);
-
- tp->t_iobc = *cp;
- tp->t_oobflags |= TCPOOB_HAVEDATA;
- memcpy(sp, cp+1, (unsigned)(m->m_len - cnt - 1));
- m->m_len--;
- return;
- }
- cnt -= m->m_len;
- m = m->m_next; /* XXX WRONG! Fix it! */
- if (m == 0)
- break;
- }
- panic("tcp_pulloutofband");
-}
-
-#endif /* notdef */
-
/*
* Collect new round-trip time estimate
* and update averages and current timeout.