800 	struct bootp_pkt *b;  in ic_bootp_send_if()  local
811 	b = skb_put_zero(skb, sizeof(struct bootp_pkt));  in ic_bootp_send_if()
826 	b->udph.source = htons(68);  in ic_bootp_send_if()
827 	b->udph.dest = htons(67);  in ic_bootp_send_if()
828 	b->udph.len = htons(sizeof(struct bootp_pkt) - sizeof(struct iphdr));  in ic_bootp_send_if()
832 	b->op = BOOTP_REQUEST;  in ic_bootp_send_if()
834 		b->htype = dev->type;  in ic_bootp_send_if()
836 		b->htype = ARPHRD_ETHER;  in ic_bootp_send_if()
840 		b->htype = dev->type; /* can cause undefined behavior */  in ic_bootp_send_if()
844 	b->hlen = dev->addr_len;  in ic_bootp_send_if()
845 	memcpy(b->hw_addr, dev->dev_addr, dev->addr_len);  in ic_bootp_send_if()
846 	b->secs = htons(jiffies_diff / HZ);  in ic_bootp_send_if()
847 	b->xid = d->xid;  in ic_bootp_send_if()
852 		ic_dhcp_init_options(b->exten, d);  in ic_bootp_send_if()
855 		ic_bootp_init_ext(b->exten);  in ic_bootp_send_if()
963 	struct bootp_pkt *b;  in ic_bootp_recv()  local
984 	b = (struct bootp_pkt *)skb_network_header(skb);  in ic_bootp_recv()
985 	h = &b->iph;  in ic_bootp_recv()
1002 	if (b->udph.source != htons(67) || b->udph.dest != htons(68))  in ic_bootp_recv()
1005 	if (ntohs(h->tot_len) < ntohs(b->udph.len) + sizeof(struct iphdr))  in ic_bootp_recv()
1008 	len = ntohs(b->udph.len) - sizeof(struct udphdr);  in ic_bootp_recv()
1009 	ext_len = len - (sizeof(*b) -  in ic_bootp_recv()
1012 			 sizeof(b->exten));  in ic_bootp_recv()
1020 	b = (struct bootp_pkt *)skb_network_header(skb);  in ic_bootp_recv()
1021 	h = &b->iph;  in ic_bootp_recv()
1038 	if (b->op != BOOTP_REPLY ||  in ic_bootp_recv()
1039 	    b->xid != d->xid) {  in ic_bootp_recv()
1041 				    d->dev->name, b->op, b->xid);  in ic_bootp_recv()
1047 	    !memcmp(b->exten, ic_bootp_cookie, 4)) { /* Check magic cookie */  in ic_bootp_recv()
1048 		u8 *end = (u8 *) b + ntohs(b->iph.tot_len);  in ic_bootp_recv()
1056 			ext = &b->exten[4];  in ic_bootp_recv()
1087 				ic_myaddr = b->your_ip;  in ic_bootp_recv()
1090 					 &ic_myaddr, &b->iph.saddr);  in ic_bootp_recv()
1096 				    (b->server_ip != server_id))  in ic_bootp_recv()
1097 					b->server_ip = ic_servaddr;  in ic_bootp_recv()
1101 				if (memcmp(dev->dev_addr, b->hw_addr, dev->addr_len) != 0)  in ic_bootp_recv()
1119 		ext = &b->exten[4];  in ic_bootp_recv()
1132 	ic_myaddr = b->your_ip;  in ic_bootp_recv()
1133 	ic_servaddr = b->server_ip;  in ic_bootp_recv()
1134 	ic_addrservaddr = b->iph.saddr;  in ic_bootp_recv()
1135 	if (ic_gateway == NONE && b->relay_ip)  in ic_bootp_recv()
1136 		ic_gateway = b->relay_ip;  in ic_bootp_recv()