9  * ESP GRO support
21 #include <net/esp.h>
252 	struct esp_info esp;  in esp_xmit()  local
256 	esp.inplace = true;  in esp_xmit()
270 	esp.proto = xo->proto;  in esp_xmit()
277 	esp.tfclen = 0;  in esp_xmit()
281 	esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);  in esp_xmit()
282 	esp.plen = esp.clen - skb->len - esp.tfclen;  in esp_xmit()
283 	esp.tailen = esp.tfclen + esp.plen + alen;  in esp_xmit()
285 	esp.esph = ip_esp_hdr(skb);  in esp_xmit()
289 		esp.nfrags = esp_output_head(x, skb, &esp);  in esp_xmit()
290 		if (esp.nfrags < 0)  in esp_xmit()
291 			return esp.nfrags;  in esp_xmit()
296 	esph = esp.esph;  in esp_xmit()
310 	esp.seqno = cpu_to_be64(seq + ((u64)xo->seq.hi << 32));  in esp_xmit()
318 	err = esp_output_tail(x, skb, &esp);  in esp_xmit()