48 static ushort cdp_compute_csum(const uchar *buff, ushort len)  in cdp_compute_csum()  argument
56 	if (len > 0) {  in cdp_compute_csum()
60 			len--;  in cdp_compute_csum()
63 		while (len > 1) {  in cdp_compute_csum()
69 			len -= 2;  in cdp_compute_csum()
71 		if (len) {  in cdp_compute_csum()
112 	int len;  in cdp_send_trigger()  local
155 	len = strlen(buf);  in cdp_send_trigger()
156 	if (len & 1)	/* make it even */  in cdp_send_trigger()
157 		len++;  in cdp_send_trigger()
158 	*s++ = htons(len + 4);  in cdp_send_trigger()
159 	memcpy((uchar *)s, buf, len);  in cdp_send_trigger()
160 	s += len / 2;  in cdp_send_trigger()
174 	len = strlen(buf);  in cdp_send_trigger()
175 	if (len & 1)	/* make it even */  in cdp_send_trigger()
176 		len++;  in cdp_send_trigger()
177 	*s++ = htons(len + 4);  in cdp_send_trigger()
178 	memcpy((uchar *)s, buf, len);  in cdp_send_trigger()
179 	s += len / 2;  in cdp_send_trigger()
186 	len = strlen(buf);  in cdp_send_trigger()
187 	if (len & 1)	/* make it even */  in cdp_send_trigger()
188 		len++;  in cdp_send_trigger()
189 	*s++ = htons(len + 4);  in cdp_send_trigger()
190 	memcpy((uchar *)s, buf, len);  in cdp_send_trigger()
191 	s += len / 2;  in cdp_send_trigger()
208 	len = (uchar *)s - ((uchar *)net_tx_packet + ETHER_HDR_SIZE);  in cdp_send_trigger()
209 	et->et_protlen = htons(len);  in cdp_send_trigger()
211 	len = ETHER_HDR_SIZE + sizeof(cdp_snap_hdr);  in cdp_send_trigger()
212 	chksum = cdp_compute_csum((uchar *)net_tx_packet + len,  in cdp_send_trigger()
213 				  (uchar *)s - (net_tx_packet + len));  in cdp_send_trigger()
239 void cdp_receive(const uchar *pkt, unsigned len)  in cdp_receive()  argument
247 	if (len < sizeof(cdp_snap_hdr) + 4)  in cdp_receive()
255 	len -= sizeof(cdp_snap_hdr);  in cdp_receive()
269 	if (cdp_compute_csum(pkt, len) != 0)  in cdp_receive()
273 	len -= 4;  in cdp_receive()
277 	while (len > 0) {  in cdp_receive()
278 		if (len < 4)  in cdp_receive()
284 		if (tlen > len)  in cdp_receive()
288 		len -= tlen;  in cdp_receive()