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Commit | Line | Data |
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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 |