86 static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,  in gue_remcsum()  argument
97 		return guehdr;  in gue_remcsum()
101 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_remcsum()
103 	skb_remcsum_process(skb, (void *)guehdr + hdrlen,  in gue_remcsum()
106 	return guehdr;  in gue_remcsum()
109 static int gue_control_message(struct sk_buff *skb, struct guehdr *guehdr)  in gue_control_message()  argument
120 	struct guehdr *guehdr;  in gue_udp_recv()  local
127 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_udp_recv()
131 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
133 	switch (guehdr->version) {  in gue_udp_recv()
142 		switch (((struct iphdr *)guehdr)->version) {  in gue_udp_recv()
163 	optlen = guehdr->hlen << 2;  in gue_udp_recv()
170 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
172 	hdrlen = sizeof(struct guehdr) + optlen;  in gue_udp_recv()
174 	if (guehdr->version != 0 || validate_gue_flags(guehdr, optlen))  in gue_udp_recv()
177 	hdrlen = sizeof(struct guehdr) + optlen;  in gue_udp_recv()
190 	data = &guehdr[1];  in gue_udp_recv()
192 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_udp_recv()
198 			guehdr = gue_remcsum(skb, guehdr, data + doffset,  in gue_udp_recv()
199 					     hdrlen, guehdr->proto_ctype,  in gue_udp_recv()
202 			if (!guehdr)  in gue_udp_recv()
205 			data = &guehdr[1];  in gue_udp_recv()
211 	if (unlikely(guehdr->control))  in gue_udp_recv()
212 		return gue_control_message(skb, guehdr);  in gue_udp_recv()
220 	return -guehdr->proto_ctype;  in gue_udp_recv()
285 static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,  in gue_gro_remcsum()
286 				      struct guehdr *guehdr, void *data,  in gue_gro_remcsum()  argument
295 		return guehdr;  in gue_gro_remcsum()
300 	guehdr = skb_gro_remcsum_process(skb, (void *)guehdr, off, hdrlen,  in gue_gro_remcsum()
305 	return guehdr;  in gue_gro_remcsum()
316 	struct guehdr *guehdr;  in gue_gro_receive()  local
328 	len = off + sizeof(*guehdr);  in gue_gro_receive()
330 	guehdr = skb_gro_header_fast(skb, off);  in gue_gro_receive()
332 		guehdr = skb_gro_header_slow(skb, len, off);  in gue_gro_receive()
333 		if (unlikely(!guehdr))  in gue_gro_receive()
337 	switch (guehdr->version) {  in gue_gro_receive()
341 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_receive()
356 	optlen = guehdr->hlen << 2;  in gue_gro_receive()
360 		guehdr = skb_gro_header_slow(skb, len, off);  in gue_gro_receive()
361 		if (unlikely(!guehdr))  in gue_gro_receive()
365 	if (unlikely(guehdr->control) || guehdr->version != 0 ||  in gue_gro_receive()
366 	    validate_gue_flags(guehdr, optlen))  in gue_gro_receive()
369 	hdrlen = sizeof(*guehdr) + optlen;  in gue_gro_receive()
374 	skb_gro_postpull_rcsum(skb, guehdr, hdrlen);  in gue_gro_receive()
376 	data = &guehdr[1];  in gue_gro_receive()
378 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_gro_receive()
384 			guehdr = gue_gro_remcsum(skb, off, guehdr,  in gue_gro_receive()
389 			if (!guehdr)  in gue_gro_receive()
392 			data = &guehdr[1];  in gue_gro_receive()
401 		const struct guehdr *guehdr2;  in gue_gro_receive()
406 		guehdr2 = (struct guehdr *)(p->data + off);  in gue_gro_receive()
411 		if (guehdr->word != guehdr2->word) {  in gue_gro_receive()
417 		if (guehdr->hlen && memcmp(&guehdr[1], &guehdr2[1],  in gue_gro_receive()
418 					   guehdr->hlen << 2)) {  in gue_gro_receive()
424 	proto = guehdr->proto_ctype;  in gue_gro_receive()
459 	struct guehdr *guehdr = (struct guehdr *)(skb->data + nhoff);  in gue_gro_complete()  local
465 	switch (guehdr->version) {  in gue_gro_complete()
467 		proto = guehdr->proto_ctype;  in gue_gro_complete()
468 		guehlen = sizeof(*guehdr) + (guehdr->hlen << 2);  in gue_gro_complete()
471 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_complete()
849 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_encap_hlen()
881 	struct guehdr *guehdr;  in __gue_build_header()  local
904 	hdrlen = sizeof(struct guehdr) + optlen;  in __gue_build_header()
908 	guehdr = (struct guehdr *)skb->data;  in __gue_build_header()
910 	guehdr->control = 0;  in __gue_build_header()
911 	guehdr->version = 0;  in __gue_build_header()
912 	guehdr->hlen = optlen >> 2;  in __gue_build_header()
913 	guehdr->flags = 0;  in __gue_build_header()
914 	guehdr->proto_ctype = *protocol;  in __gue_build_header()
916 	data = &guehdr[1];  in __gue_build_header()
921 		guehdr->flags |= GUE_FLAG_PRIV;  in __gue_build_header()