88 static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,  in gue_remcsum()  argument
99 		return guehdr;  in gue_remcsum()
103 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_remcsum()
105 	skb_remcsum_process(skb, (void *)guehdr + hdrlen,  in gue_remcsum()
108 	return guehdr;  in gue_remcsum()
111 static int gue_control_message(struct sk_buff *skb, struct guehdr *guehdr)  in gue_control_message()  argument
122 	struct guehdr *guehdr;  in gue_udp_recv()  local
130 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_udp_recv()
134 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
136 	switch (guehdr->version) {  in gue_udp_recv()
145 		switch (((struct iphdr *)guehdr)->version) {  in gue_udp_recv()
166 	optlen = guehdr->hlen << 2;  in gue_udp_recv()
173 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
175 	if (validate_gue_flags(guehdr, optlen))  in gue_udp_recv()
178 	hdrlen = sizeof(struct guehdr) + optlen;  in gue_udp_recv()
191 	data = &guehdr[1];  in gue_udp_recv()
193 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_udp_recv()
199 			guehdr = gue_remcsum(skb, guehdr, data + doffset,  in gue_udp_recv()
200 					     hdrlen, guehdr->proto_ctype,  in gue_udp_recv()
203 			if (!guehdr)  in gue_udp_recv()
206 			data = &guehdr[1];  in gue_udp_recv()
212 	if (unlikely(guehdr->control))  in gue_udp_recv()
213 		return gue_control_message(skb, guehdr);  in gue_udp_recv()
215 	proto_ctype = guehdr->proto_ctype;  in gue_udp_recv()
287 static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,  in gue_gro_remcsum()
288 				      struct guehdr *guehdr, void *data,  in gue_gro_remcsum()  argument
297 		return guehdr;  in gue_gro_remcsum()
302 	guehdr = skb_gro_remcsum_process(skb, (void *)guehdr, off, hdrlen,  in gue_gro_remcsum()
307 	return guehdr;  in gue_gro_remcsum()
318 	struct guehdr *guehdr;  in gue_gro_receive()  local
330 	len = off + sizeof(*guehdr);  in gue_gro_receive()
332 	guehdr = skb_gro_header_fast(skb, off);  in gue_gro_receive()
334 		guehdr = skb_gro_header_slow(skb, len, off);  in gue_gro_receive()
335 		if (unlikely(!guehdr))  in gue_gro_receive()
339 	switch (guehdr->version) {  in gue_gro_receive()
343 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_receive()
358 	optlen = guehdr->hlen << 2;  in gue_gro_receive()
362 		guehdr = skb_gro_header_slow(skb, len, off);  in gue_gro_receive()
363 		if (unlikely(!guehdr))  in gue_gro_receive()
367 	if (unlikely(guehdr->control) || guehdr->version != 0 ||  in gue_gro_receive()
368 	    validate_gue_flags(guehdr, optlen))  in gue_gro_receive()
371 	hdrlen = sizeof(*guehdr) + optlen;  in gue_gro_receive()
376 	skb_gro_postpull_rcsum(skb, guehdr, hdrlen);  in gue_gro_receive()
378 	data = &guehdr[1];  in gue_gro_receive()
380 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_gro_receive()
386 			guehdr = gue_gro_remcsum(skb, off, guehdr,  in gue_gro_receive()
391 			if (!guehdr)  in gue_gro_receive()
394 			data = &guehdr[1];  in gue_gro_receive()
403 		const struct guehdr *guehdr2;  in gue_gro_receive()
408 		guehdr2 = (struct guehdr *)(p->data + off);  in gue_gro_receive()
413 		if (guehdr->word != guehdr2->word) {  in gue_gro_receive()
419 		if (guehdr->hlen && memcmp(&guehdr[1], &guehdr2[1],  in gue_gro_receive()
420 					   guehdr->hlen << 2)) {  in gue_gro_receive()
426 	proto = guehdr->proto_ctype;  in gue_gro_receive()
461 	struct guehdr *guehdr = (struct guehdr *)(skb->data + nhoff);  in gue_gro_complete()  local
467 	switch (guehdr->version) {  in gue_gro_complete()
469 		proto = guehdr->proto_ctype;  in gue_gro_complete()
470 		guehlen = sizeof(*guehdr) + (guehdr->hlen << 2);  in gue_gro_complete()
473 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_complete()
958 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_encap_hlen()
990 	struct guehdr *guehdr;  in __gue_build_header()  local
1013 	hdrlen = sizeof(struct guehdr) + optlen;  in __gue_build_header()
1017 	guehdr = (struct guehdr *)skb->data;  in __gue_build_header()
1019 	guehdr->control = 0;  in __gue_build_header()
1020 	guehdr->version = 0;  in __gue_build_header()
1021 	guehdr->hlen = optlen >> 2;  in __gue_build_header()
1022 	guehdr->flags = 0;  in __gue_build_header()
1023 	guehdr->proto_ctype = *protocol;  in __gue_build_header()
1025 	data = &guehdr[1];  in __gue_build_header()
1030 		guehdr->flags |= GUE_FLAG_PRIV;  in __gue_build_header()
1130 	struct guehdr *guehdr;  in gue_err()  local
1134 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_err()
1138 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_err()
1140 	switch (guehdr->version) {  in gue_err()
1147 		switch (((struct iphdr *)guehdr)->version) {  in gue_err()
1165 	if (guehdr->control)  in gue_err()
1168 	optlen = guehdr->hlen << 2;  in gue_err()
1173 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_err()
1174 	if (validate_gue_flags(guehdr, optlen))  in gue_err()
1181 	if (guehdr->proto_ctype == IPPROTO_UDP ||  in gue_err()
1182 	    guehdr->proto_ctype == IPPROTO_UDPLITE)  in gue_err()
1186 	ret = gue_err_proto_handler(guehdr->proto_ctype, skb, info);  in gue_err()