9  * ESP GRO support
21 #include <net/esp.h>
288 	struct esp_info esp;  in esp6_xmit()  local
292 	esp.inplace = true;  in esp6_xmit()
304 	esp.proto = xo->proto;  in esp6_xmit()
311 	esp.tfclen = 0;  in esp6_xmit()
315 	esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);  in esp6_xmit()
316 	esp.plen = esp.clen - skb->len - esp.tfclen;  in esp6_xmit()
317 	esp.tailen = esp.tfclen + esp.plen + alen;  in esp6_xmit()
320 		esp.nfrags = esp6_output_head(x, skb, &esp);  in esp6_xmit()
321 		if (esp.nfrags < 0)  in esp6_xmit()
322 			return esp.nfrags;  in esp6_xmit()
327 	esp.esph = ip_esp_hdr(skb);  in esp6_xmit()
328 	esp.esph->spi = x->id.spi;  in esp6_xmit()
333 		esp.esph->seq_no = htonl(seq);  in esp6_xmit()
341 	esp.seqno = cpu_to_be64(xo->seq.low + ((u64)xo->seq.hi << 32));  in esp6_xmit()
352 	err = esp6_output_tail(x, skb, &esp);  in esp6_xmit()