24 	struct gre_base_hdr *greh;  in gre_gso_segment()  local
46 	if (unlikely(!pskb_may_pull(skb, sizeof(*greh))))  in gre_gso_segment()
49 	greh = (struct gre_base_hdr *)skb_transport_header(skb);  in gre_gso_segment()
52 	if (unlikely(ghl < sizeof(*greh)))  in gre_gso_segment()
55 	csum = !!(greh->flags & GRE_CSUM);  in gre_gso_segment()
60 	skb->protocol = greh->protocol;  in gre_gso_segment()
99 			greh = (struct gre_base_hdr *)  in gre_gso_segment()
101 			pcsum = (__be32 *)(greh + 1);  in gre_gso_segment()
124 	const struct gre_base_hdr *greh;  in gre_gro_receive()  local
132 	hlen = off + sizeof(*greh);  in gre_gro_receive()
133 	greh = skb_gro_header_fast(skb, off);  in gre_gro_receive()
135 		greh = skb_gro_header_slow(skb, hlen, off);  in gre_gro_receive()
136 		if (unlikely(!greh))  in gre_gro_receive()
146 	if ((greh->flags & ~(GRE_KEY|GRE_CSUM)) != 0)  in gre_gro_receive()
149 	type = greh->protocol;  in gre_gro_receive()
158 	if (greh->flags & GRE_KEY)  in gre_gro_receive()
161 	if (greh->flags & GRE_CSUM)  in gre_gro_receive()
166 		greh = skb_gro_header_slow(skb, hlen, off);  in gre_gro_receive()
167 		if (unlikely(!greh))  in gre_gro_receive()
172 	if ((greh->flags & GRE_CSUM) && !NAPI_GRO_CB(skb)->flush) {  in gre_gro_receive()
198 		if (greh2->flags != greh->flags ||  in gre_gro_receive()
199 		    greh2->protocol != greh->protocol) {  in gre_gro_receive()
203 		if (greh->flags & GRE_KEY) {  in gre_gro_receive()
205 			if (*(__be32 *)(greh2+1) != *(__be32 *)(greh+1)) {  in gre_gro_receive()
215 	skb_gro_postpull_rcsum(skb, greh, grehlen);  in gre_gro_receive()
229 	struct gre_base_hdr *greh = (struct gre_base_hdr *)(skb->data + nhoff);  in gre_gro_complete()  local
231 	unsigned int grehlen = sizeof(*greh);  in gre_gro_complete()
238 	type = greh->protocol;  in gre_gro_complete()
239 	if (greh->flags & GRE_KEY)  in gre_gro_complete()
242 	if (greh->flags & GRE_CSUM)  in gre_gro_complete()