projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _NET_ESP_H |
| 3 | #define _NET_ESP_H | |
| 4 | ||
| 38320c70 | 5 | #include <linux/skbuff.h> |
| 1da177e4 | 6 | |
| 87bdc48d HX |
7 | struct ip_esp_hdr; |
| 8 | ||
| 9 | static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb) | |
| 10 | { | |
| 11 | return (struct ip_esp_hdr *)skb_transport_header(skb); | |
| 12 | } | |
| 13 | ||
| dda520c4 RS |
14 | static inline void esp_output_fill_trailer(u8 *tail, int tfclen, int plen, __u8 proto) |
| 15 | { | |
| 16 | /* Fill padding... */ | |
| 17 | if (tfclen) { | |
| 18 | memset(tail, 0, tfclen); | |
| 19 | tail += tfclen; | |
| 20 | } | |
| 21 | do { | |
| 22 | int i; | |
| 23 | for (i = 0; i < plen - 2; i++) | |
| 24 | tail[i] = i + 1; | |
| 25 | } while (0); | |
| 26 | tail[plen - 2] = plen - 2; | |
| 27 | tail[plen - 1] = proto; | |
| 28 | } | |
| 29 | ||
| fca11ebd SK |
30 | struct esp_info { |
| 31 | struct ip_esp_hdr *esph; | |
| 32 | __be64 seqno; | |
| 33 | int tfclen; | |
| 34 | int tailen; | |
| 35 | int plen; | |
| 36 | int clen; | |
| 37 | int len; | |
| 38 | int nfrags; | |
| 39 | __u8 proto; | |
| 40 | bool inplace; | |
| 41 | }; | |
| 42 | ||
| 43 | int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); | |
| 44 | int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); | |
| 45 | int esp_input_done2(struct sk_buff *skb, int err); | |
| 383d0350 SK |
46 | int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); |
| 47 | int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); | |
| 48 | int esp6_input_done2(struct sk_buff *skb, int err); | |
| 1da177e4 | 49 | #endif |