74   register struct ip *ip=mtod(m, struct ip *);  in icmp_input()  local
75   int icmplen=ip->ip_len;  in icmp_input()
112     ip->ip_len += hlen;	             /* since ip_input subtracts this */  in icmp_input()
113     if (ip->ip_dst.s_addr == alias_addr.s_addr) {  in icmp_input()
127       so->so_faddr = ip->ip_dst;  in icmp_input()
129       so->so_laddr = ip->ip_src;  in icmp_input()
131       so->so_iptos = ip->ip_tos;  in icmp_input()
208   register struct ip *ip;  in icmp_error()  local
220   ip = mtod(msrc, struct ip *);  in icmp_error()
223     strcpy(bufa, inet_ntoa(ip->ip_src));  in icmp_error()
224     strcpy(bufb, inet_ntoa(ip->ip_dst));  in icmp_error()
228   if(ip->ip_off & IP_OFFMASK) goto end_error;    /* Only reply to fragment 0 */  in icmp_error()
230   shlen=ip->ip_hl << 2;  in icmp_error()
231   s_ip_len=ip->ip_len;  in icmp_error()
232   if(ip->ip_p == IPPROTO_ICMP) {  in icmp_error()
233     icp = (struct icmp *)((char *)ip + shlen);  in icmp_error()
244     new_m_size=sizeof(struct ip )+ICMP_MINLEN+msrc->m_len+ICMP_MAXDATALEN;  in icmp_error()
251   ip  = mtod(m, struct ip *);  in icmp_error()
252   hlen= sizeof(struct ip );     /* no options in reply */  in icmp_error()
297   ip->ip_hl = hlen >> 2;  in icmp_error()
298   ip->ip_len = m->m_len;  in icmp_error()
300   ip->ip_tos=((ip->ip_tos & 0x1E) | 0xC0);  /* high priority for errors */  in icmp_error()
302   ip->ip_ttl = MAXTTL;  in icmp_error()
303   ip->ip_p = IPPROTO_ICMP;  in icmp_error()
304   ip->ip_dst = ip->ip_src;    /* ip adresses */  in icmp_error()
305   ip->ip_src = alias_addr;  in icmp_error()
322   register struct ip *ip = mtod(m, struct ip *);  in icmp_reflect()  local
323   int hlen = ip->ip_hl << 2;  in icmp_reflect()
324   int optlen = hlen - sizeof(struct ip );  in icmp_reflect()
336   icp->icmp_cksum = cksum(m, ip->ip_len - hlen);  in icmp_reflect()
347     memmove((caddr_t)(ip + 1), (caddr_t)ip + hlen,  in icmp_reflect()
350     ip->ip_hl = hlen >> 2;  in icmp_reflect()
351     ip->ip_len -= optlen;  in icmp_reflect()
355   ip->ip_ttl = MAXTTL;  in icmp_reflect()
358     icmp_dst = ip->ip_dst;  in icmp_reflect()
359     ip->ip_dst = ip->ip_src;  in icmp_reflect()
360     ip->ip_src = icmp_dst;  in icmp_reflect()