Lines Matching full:esp

11  *	This file is derived from net/ipv4/esp.c
22 #include <net/esp.h>
281 /* Move ESP header back into place. */
341 					       struct esp_info *esp,
348 	len = skb->len + esp->tailen - skb_transport_offset(skb);
352 	uh = (struct udphdr *)esp->esph;
366 						struct esp_info *esp)
368 	__be16 *lenp = (void *)esp->esph;
373 	len = skb->len + esp->tailen - skb_transport_offset(skb);
394 						struct esp_info *esp)
401 			    struct esp_info *esp)
417 		esph = esp6_output_udp_encap(skb, encap_type, esp, sport, dport);
420 		esph = esp6_output_tcp_encap(x, skb, esp);
427 	esp->esph = esph;
432 int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
439 	int tailen = esp->tailen;
442 		int err = esp6_output_encap(x, skb, esp);
465 			esp->inplace = false;
481 			esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
506 	esph_offset = (unsigned char *)esp->esph - skb_transport_header(skb);
512 	esp->esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);
515 	esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
523 int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
551 	tmp = esp_alloc_tmp(aead, esp->nfrags + 2, extralen);
560 	if (esp->inplace)
563 		dsg = &sg[esp->nfrags];
565 	esph = esp_output_set_esn(skb, x, esp->esph, extra);
566 	esp->esph = esph;
568 	sg_init_table(sg, esp->nfrags);
571 		           assoclen + ivlen + esp->clen + alen);
575 	if (!esp->inplace) {
599 			           assoclen + ivlen + esp->clen + alen);
609 	aead_request_set_crypt(req, sg, dsg, ivlen + esp->clen, iv);
613 	memcpy(iv + ivlen - min(ivlen, 8), (u8 *)&esp->seqno + 8 - min(ivlen, 8),
652 	struct esp_info esp;
654 	esp.inplace = true;
656 	esp.proto = *skb_mac_header(skb);
664 	esp.tfclen = 0;
671 			esp.tfclen = padto - skb->len;
674 	esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);
675 	esp.plen = esp.clen - skb->len - esp.tfclen;
676 	esp.tailen = esp.tfclen + esp.plen + alen;
678 	esp.esph = ip_esp_hdr(skb);
680 	esp.nfrags = esp6_output_head(x, skb, &esp);
681 	if (esp.nfrags < 0)
682 		return esp.nfrags;
684 	esph = esp.esph;
688 	esp.seqno = cpu_to_be64(XFRM_SKB_CB(skb)->seq.output.low +
693 	return esp6_output_tail(x, skb, &esp);
716 		net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n",
1153 		NL_SET_ERR_MSG(extack, "ESP: AEAD or CRYPT must be provided");
1183 			NL_SET_ERR_MSG(extack, "Unsupported encapsulation type for ESP");
1255 MODULE_DESCRIPTION("IPv6 ESP transformation helpers");