9 #include <net/esp.h>
152 /* Move ESP header back into place. */
226 static int esp_output_udp_encap(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)  in esp_output_udp_encap()  argument
233 	struct ip_esp_hdr *esph = esp->esph;  in esp_output_udp_encap()
242 	len = skb->len + esp->tailen - skb_transport_offset(skb);  in esp_output_udp_encap()
265 	esp->esph = esph;  in esp_output_udp_encap()
270 int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)  in esp_output_head()  argument
278 	int tailen = esp->tailen;  in esp_output_head()
283 		int err = esp_output_udp_encap(x, skb, esp);  in esp_output_head()
306 			esp->inplace = false;  in esp_output_head()
324 			esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);  in esp_output_head()
351 	esph_offset = (unsigned char *)esp->esph - skb_transport_header(skb);  in esp_output_head()
357 	esp->esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);  in esp_output_head()
360 	esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);  in esp_output_head()
368 int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)  in esp_output_tail()  argument
396 	tmp = esp_alloc_tmp(aead, esp->nfrags + 2, extralen);  in esp_output_tail()
405 	if (esp->inplace)  in esp_output_tail()
408 		dsg = &sg[esp->nfrags];  in esp_output_tail()
410 	esph = esp_output_set_extra(skb, x, esp->esph, extra);  in esp_output_tail()
411 	esp->esph = esph;  in esp_output_tail()
413 	sg_init_table(sg, esp->nfrags);  in esp_output_tail()
416 		           assoclen + ivlen + esp->clen + alen);  in esp_output_tail()
420 	if (!esp->inplace) {  in esp_output_tail()
444 			           assoclen + ivlen + esp->clen + alen);  in esp_output_tail()
454 	aead_request_set_crypt(req, sg, dsg, ivlen + esp->clen, iv);  in esp_output_tail()
458 	memcpy(iv + ivlen - min(ivlen, 8), (u8 *)&esp->seqno + 8 - min(ivlen, 8),  in esp_output_tail()
493 	struct esp_info esp;  in esp_output()  local
495 	esp.inplace = true;  in esp_output()
497 	esp.proto = *skb_mac_header(skb);  in esp_output()
505 	esp.tfclen = 0;  in esp_output()
512 			esp.tfclen = padto - skb->len;  in esp_output()
515 	esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);  in esp_output()
516 	esp.plen = esp.clen - skb->len - esp.tfclen;  in esp_output()
517 	esp.tailen = esp.tfclen + esp.plen + alen;  in esp_output()
519 	esp.esph = ip_esp_hdr(skb);  in esp_output()
521 	esp.nfrags = esp_output_head(x, skb, &esp);  in esp_output()
522 	if (esp.nfrags < 0)  in esp_output()
523 		return esp.nfrags;  in esp_output()
525 	esph = esp.esph;  in esp_output()
529 	esp.seqno = cpu_to_be64(XFRM_SKB_CB(skb)->seq.output.low +  in esp_output()
534 	return esp_output_tail(x, skb, &esp);  in esp_output()
563 		net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n",  in esp_remove_trailer()
955 			pr_info("ESP: %s digestsize %u != %hu\n",  in esp_init_authenc()