Lines Matching full:esp
10 #include <net/esp.h>
245 /* Move ESP header back into place. */
305 struct esp_info *esp,
313 len = skb->len + esp->tailen - skb_transport_offset(skb);
317 uh = (struct udphdr *)esp->esph;
323 /* For IPv4 ESP with UDP encapsulation, if xo is not null, the skb is in the crypto offload
336 struct esp_info *esp)
338 __be16 *lenp = (void *)esp->esph;
343 len = skb->len + esp->tailen - skb_transport_offset(skb);
364 struct esp_info *esp)
371 struct esp_info *esp)
387 esph = esp_output_udp_encap(skb, encap_type, esp, sport, dport);
390 esph = esp_output_tcp_encap(x, skb, esp);
397 esp->esph = esph;
402 int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
409 int tailen = esp->tailen;
413 int err = esp_output_encap(x, skb, esp);
436 esp->inplace = false;
452 esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
475 esph_offset = (unsigned char *)esp->esph - skb_transport_header(skb);
481 esp->esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);
484 esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
492 int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
520 tmp = esp_alloc_tmp(aead, esp->nfrags + 2, extralen);
529 if (esp->inplace)
532 dsg = &sg[esp->nfrags];
534 esph = esp_output_set_extra(skb, x, esp->esph, extra);
535 esp->esph = esph;
537 sg_init_table(sg, esp->nfrags);
540 assoclen + ivlen + esp->clen + alen);
544 if (!esp->inplace) {
568 assoclen + ivlen + esp->clen + alen);
578 aead_request_set_crypt(req, sg, dsg, ivlen + esp->clen, iv);
582 memcpy(iv + ivlen - min(ivlen, 8), (u8 *)&esp->seqno + 8 - min(ivlen, 8),
620 struct esp_info esp;
622 esp.inplace = true;
624 esp.proto = *skb_mac_header(skb);
632 esp.tfclen = 0;
639 esp.tfclen = padto - skb->len;
642 esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);
643 esp.plen = esp.clen - skb->len - esp.tfclen;
644 esp.tailen = esp.tfclen + esp.plen + alen;
646 esp.esph = ip_esp_hdr(skb);
648 esp.nfrags = esp_output_head(x, skb, &esp);
649 if (esp.nfrags < 0)
650 return esp.nfrags;
652 esph = esp.esph;
656 esp.seqno = cpu_to_be64(XFRM_SKB_CB(skb)->seq.output.low +
661 return esp_output_tail(x, skb, &esp);
684 net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n",
1116 NL_SET_ERR_MSG(extack, "ESP: AEAD or CRYPT must be provided");
1136 NL_SET_ERR_MSG(extack, "Unsupported encapsulation type for ESP");
1207 MODULE_DESCRIPTION("IPv4 ESP transformation library");