65 _sendip(struct iodesc *d, struct ip *ip, size_t len)  in _sendip()  argument
69 	if (ip->ip_dst.s_addr == INADDR_BROADCAST || ip->ip_src.s_addr == 0 ||  in _sendip()
70 	    netmask == 0 || SAMENET(ip->ip_src, ip->ip_dst, netmask)) {  in _sendip()
71 		ea = arpwhohas(d, ip->ip_dst);  in _sendip()
76 	return sendether(d, ip, len, ea, ETHERTYPE_IP);  in _sendip()
87 	struct ip *ip;  in sendip()  local
89 	ip = (struct ip *)pkt - 1;  in sendip()
90 	len += sizeof(*ip);  in sendip()
92 	memset(ip, 0, sizeof(*ip));  in sendip()
94 	ip->ip_v = IPVERSION;  in sendip()
95 	ip->ip_hl = sizeof(*ip) >> 2;  in sendip()
96 	ip->ip_len = htons(len);  in sendip()
97 	ip->ip_p = proto;  in sendip()
98 	ip->ip_ttl = IPDEFTTL;  in sendip()
99 	ip->ip_src = d->myip;  in sendip()
100 	ip->ip_dst = d->destip;  in sendip()
101 	ip->ip_sum = ip_cksum(ip, sizeof(*ip));  in sendip()
103 	cc = _sendip(d, ip, len);  in sendip()
109 	return (cc - (sizeof(*ip)));  in sendip()
125 	struct ip *ip;  in readip()  local
128 	ip = (struct ip *)pkt - 1;  in readip()
130 	n = readether(d, ip, len + sizeof(*ip), tleft, &etype);  in readip()
131 	if (n == -1 || (size_t)n < sizeof(*ip))  in readip()
135 		struct arphdr *ah = (void *)ip;  in readip()
149 	if (ip->ip_v != IPVERSION || ip->ip_p != proto) {  in readip()
153 	hlen = ip->ip_hl << 2;  in readip()
154 	if (hlen != sizeof(*ip) || ip_cksum(ip, hlen) != 0) {  in readip()
157 	if (ntohs(ip->ip_len) < hlen) {  in readip()
160 	if (n < ntohs(ip->ip_len)) {  in readip()
163 	if (d->myip.s_addr && ip->ip_dst.s_addr != d->myip.s_addr) {  in readip()
167 	return (ntohs(ip->ip_len) - hlen);  in readip()