Lines Matching refs:esp
11 * This file is derived from net/ipv4/esp.c
22 #include <net/esp.h>
381 struct esp_info *esp,
389 len = skb->len + esp->tailen - skb_transport_offset(skb);
393 uh = (struct udphdr *)esp->esph;
413 struct esp_info *esp)
415 __be16 *lenp = (void *)esp->esph;
420 len = skb->len + esp->tailen - skb_transport_offset(skb);
439 struct esp_info *esp)
446 struct esp_info *esp)
463 esph = esp6_output_udp_encap(skb, encap_type, esp, sport, dport);
466 esph = esp6_output_tcp_encap(x, skb, esp);
473 esp->esph = esph;
478 int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
485 int tailen = esp->tailen;
488 int err = esp6_output_encap(x, skb, esp);
511 esp->inplace = false;
527 esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
552 esph_offset = (unsigned char *)esp->esph - skb_transport_header(skb);
558 esp->esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);
561 esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);
569 int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp)
597 tmp = esp_alloc_tmp(aead, esp->nfrags + 2, extralen);
606 if (esp->inplace)
609 dsg = &sg[esp->nfrags];
611 esph = esp_output_set_esn(skb, x, esp->esph, extra);
612 esp->esph = esph;
614 sg_init_table(sg, esp->nfrags);
617 assoclen + ivlen + esp->clen + alen);
621 if (!esp->inplace) {
645 assoclen + ivlen + esp->clen + alen);
655 aead_request_set_crypt(req, sg, dsg, ivlen + esp->clen, iv);
659 memcpy(iv + ivlen - min(ivlen, 8), (u8 *)&esp->seqno + 8 - min(ivlen, 8),
698 struct esp_info esp;
700 esp.inplace = true;
702 esp.proto = *skb_mac_header(skb);
710 esp.tfclen = 0;
717 esp.tfclen = padto - skb->len;
720 esp.clen = ALIGN(skb->len + 2 + esp.tfclen, blksize);
721 esp.plen = esp.clen - skb->len - esp.tfclen;
722 esp.tailen = esp.tfclen + esp.plen + alen;
724 esp.esph = ip_esp_hdr(skb);
726 esp.nfrags = esp6_output_head(x, skb, &esp);
727 if (esp.nfrags < 0)
728 return esp.nfrags;
730 esph = esp.esph;
734 esp.seqno = cpu_to_be64(XFRM_SKB_CB(skb)->seq.output.low +
739 return esp6_output_tail(x, skb, &esp);
768 net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n",