75   register struct ip *ip=mtod(m, struct ip *);  in icmp_input()  local
76   int icmplen=ip->ip_len;  in icmp_input()
113     ip->ip_len += hlen;	             /* since ip_input subtracts this */  in icmp_input()
114     if (ip_geth(ip->ip_dst) == alias_addr_ip) {  in icmp_input()
131       so->so_faddr_ip   = ip_geth(ip->ip_dst);  in icmp_input()
133       so->so_laddr_ip   = ip_geth(ip->ip_src);  in icmp_input()
135       so->so_iptos = ip->ip_tos;  in icmp_input()
210   register struct ip *ip;  in icmp_error()  local
222   ip = mtod(msrc, struct ip *);  in icmp_error()
225     strcpy(bufa, inet_iptostr(ip_geth(ip->ip_src)));  in icmp_error()
226     strcpy(bufb, inet_iptostr(ip_geth(ip->ip_dst)));  in icmp_error()
230   if(ip->ip_off & IP_OFFMASK) goto end_error;    /* Only reply to fragment 0 */  in icmp_error()
232   shlen=ip->ip_hl << 2;  in icmp_error()
233   s_ip_len=ip->ip_len;  in icmp_error()
234   if(ip->ip_p == IPPROTO_ICMP) {  in icmp_error()
235     icp = (struct icmp *)((char *)ip + shlen);  in icmp_error()
246     new_m_size=sizeof(struct ip )+ICMP_MINLEN+msrc->m_len+ICMP_MAXDATALEN;  in icmp_error()
253   ip  = mtod(m, struct ip *);  in icmp_error()
254   hlen= sizeof(struct ip );     /* no options in reply */  in icmp_error()
299   ip->ip_hl = hlen >> 2;  in icmp_error()
300   ip->ip_len = m->m_len;  in icmp_error()
302   ip->ip_tos=((ip->ip_tos & 0x1E) | 0xC0);  /* high priority for errors */  in icmp_error()
304   ip->ip_ttl = MAXTTL;  in icmp_error()
305   ip->ip_p = IPPROTO_ICMP;  in icmp_error()
306   ip->ip_dst = ip->ip_src;    /* ip adresses */  in icmp_error()
307   ip->ip_src = ip_setn(alias_addr_ip);  in icmp_error()
324   register struct ip *ip = mtod(m, struct ip *);  in icmp_reflect()  local
325   int hlen = ip->ip_hl << 2;  in icmp_reflect()
326   int optlen = hlen - sizeof(struct ip );  in icmp_reflect()
338   icp->icmp_cksum = cksum(m, ip->ip_len - hlen);  in icmp_reflect()
349     memmove((caddr_t)(ip + 1), (caddr_t)ip + hlen,  in icmp_reflect()
352     ip->ip_hl = hlen >> 2;  in icmp_reflect()
353     ip->ip_len -= optlen;  in icmp_reflect()
357   ip->ip_ttl = MAXTTL;  in icmp_reflect()
360     icmp_dst   = ip->ip_dst;  in icmp_reflect()
361     ip->ip_dst = ip->ip_src;  in icmp_reflect()
362     ip->ip_src = icmp_dst;  in icmp_reflect()