90 static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,  in gue_remcsum()  argument
101 		return guehdr;  in gue_remcsum()
105 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_remcsum()
107 	skb_remcsum_process(skb, (void *)guehdr + hdrlen,  in gue_remcsum()
110 	return guehdr;  in gue_remcsum()
113 static int gue_control_message(struct sk_buff *skb, struct guehdr *guehdr)  in gue_control_message()  argument
124 	struct guehdr *guehdr;  in gue_udp_recv()  local
132 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_udp_recv()
136 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
138 	switch (guehdr->version) {  in gue_udp_recv()
147 		switch (((struct iphdr *)guehdr)->version) {  in gue_udp_recv()
168 	optlen = guehdr->hlen << 2;  in gue_udp_recv()
175 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_udp_recv()
177 	if (validate_gue_flags(guehdr, optlen))  in gue_udp_recv()
180 	hdrlen = sizeof(struct guehdr) + optlen;  in gue_udp_recv()
193 	data = &guehdr[1];  in gue_udp_recv()
195 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_udp_recv()
201 			guehdr = gue_remcsum(skb, guehdr, data + doffset,  in gue_udp_recv()
202 					     hdrlen, guehdr->proto_ctype,  in gue_udp_recv()
205 			if (!guehdr)  in gue_udp_recv()
208 			data = &guehdr[1];  in gue_udp_recv()
214 	if (unlikely(guehdr->control))  in gue_udp_recv()
215 		return gue_control_message(skb, guehdr);  in gue_udp_recv()
217 	proto_ctype = guehdr->proto_ctype;  in gue_udp_recv()
299 static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,  in gue_gro_remcsum()
300 				      struct guehdr *guehdr, void *data,  in gue_gro_remcsum()  argument
309 		return guehdr;  in gue_gro_remcsum()
314 	guehdr = skb_gro_remcsum_process(skb, (void *)guehdr, off, hdrlen,  in gue_gro_remcsum()
319 	return guehdr;  in gue_gro_remcsum()
330 	struct guehdr *guehdr;  in gue_gro_receive()  local
345 	len = off + sizeof(*guehdr);  in gue_gro_receive()
347 	guehdr = skb_gro_header(skb, len, off);  in gue_gro_receive()
348 	if (unlikely(!guehdr))  in gue_gro_receive()
351 	switch (guehdr->version) {  in gue_gro_receive()
355 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_receive()
370 	optlen = guehdr->hlen << 2;  in gue_gro_receive()
374 		guehdr = skb_gro_header_slow(skb, len, off);  in gue_gro_receive()
375 		if (unlikely(!guehdr))  in gue_gro_receive()
379 	if (unlikely(guehdr->control) || guehdr->version != 0 ||  in gue_gro_receive()
380 	    validate_gue_flags(guehdr, optlen))  in gue_gro_receive()
383 	hdrlen = sizeof(*guehdr) + optlen;  in gue_gro_receive()
388 	skb_gro_postpull_rcsum(skb, guehdr, hdrlen);  in gue_gro_receive()
390 	data = &guehdr[1];  in gue_gro_receive()
392 	if (guehdr->flags & GUE_FLAG_PRIV) {  in gue_gro_receive()
398 			guehdr = gue_gro_remcsum(skb, off, guehdr,  in gue_gro_receive()
403 			if (!guehdr)  in gue_gro_receive()
406 			data = &guehdr[1];  in gue_gro_receive()
415 		const struct guehdr *guehdr2;  in gue_gro_receive()
420 		guehdr2 = (struct guehdr *)(p->data + off);  in gue_gro_receive()
425 		if (guehdr->word != guehdr2->word) {  in gue_gro_receive()
431 		if (guehdr->hlen && memcmp(&guehdr[1], &guehdr2[1],  in gue_gro_receive()
432 					   guehdr->hlen << 2)) {  in gue_gro_receive()
438 	proto = guehdr->proto_ctype;  in gue_gro_receive()
469 	struct guehdr *guehdr = (struct guehdr *)(skb->data + nhoff);  in gue_gro_complete()  local
476 	switch (guehdr->version) {  in gue_gro_complete()
478 		proto = guehdr->proto_ctype;  in gue_gro_complete()
479 		guehlen = sizeof(*guehdr) + (guehdr->hlen << 2);  in gue_gro_complete()
482 		switch (((struct iphdr *)guehdr)->version) {  in gue_gro_complete()
931 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_encap_hlen()
963 	struct guehdr *guehdr;  in __gue_build_header()  local
986 	hdrlen = sizeof(struct guehdr) + optlen;  in __gue_build_header()
990 	guehdr = (struct guehdr *)skb->data;  in __gue_build_header()
992 	guehdr->control = 0;  in __gue_build_header()
993 	guehdr->version = 0;  in __gue_build_header()
994 	guehdr->hlen = optlen >> 2;  in __gue_build_header()
995 	guehdr->flags = 0;  in __gue_build_header()
996 	guehdr->proto_ctype = *protocol;  in __gue_build_header()
998 	data = &guehdr[1];  in __gue_build_header()
1003 		guehdr->flags |= GUE_FLAG_PRIV;  in __gue_build_header()
1103 	struct guehdr *guehdr;  in gue_err()  local
1107 	len = sizeof(struct udphdr) + sizeof(struct guehdr);  in gue_err()
1111 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_err()
1113 	switch (guehdr->version) {  in gue_err()
1120 		switch (((struct iphdr *)guehdr)->version) {  in gue_err()
1138 	if (guehdr->control)  in gue_err()
1141 	optlen = guehdr->hlen << 2;  in gue_err()
1146 	guehdr = (struct guehdr *)&udp_hdr(skb)[1];  in gue_err()
1147 	if (validate_gue_flags(guehdr, optlen))  in gue_err()
1154 	if (guehdr->proto_ctype == IPPROTO_UDP ||  in gue_err()
1155 	    guehdr->proto_ctype == IPPROTO_UDPLITE)  in gue_err()
1159 	ret = gue_err_proto_handler(guehdr->proto_ctype, skb, info);  in gue_err()