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49 lines
1.2 KiB
49 lines
1.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _NET_ESP_H |
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#define _NET_ESP_H |
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#include <linux/skbuff.h> |
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struct ip_esp_hdr; |
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static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb) |
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{ |
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return (struct ip_esp_hdr *)skb_transport_header(skb); |
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} |
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static inline void esp_output_fill_trailer(u8 *tail, int tfclen, int plen, __u8 proto) |
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{ |
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/* Fill padding... */ |
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if (tfclen) { |
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memset(tail, 0, tfclen); |
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tail += tfclen; |
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} |
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do { |
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int i; |
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for (i = 0; i < plen - 2; i++) |
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tail[i] = i + 1; |
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} while (0); |
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tail[plen - 2] = plen - 2; |
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tail[plen - 1] = proto; |
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} |
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struct esp_info { |
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struct ip_esp_hdr *esph; |
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__be64 seqno; |
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int tfclen; |
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int tailen; |
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int plen; |
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int clen; |
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int len; |
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int nfrags; |
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__u8 proto; |
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bool inplace; |
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}; |
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int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); |
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int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); |
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int esp_input_done2(struct sk_buff *skb, int err); |
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int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); |
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int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp); |
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int esp6_input_done2(struct sk_buff *skb, int err); |
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#endif
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