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![Steffen Klassert](/assets/img/avatar_default.png)
We need a fallback for ESP at layer 2, so split esp6_output into generic functions that can be used at layer 3 and layer 2 and use them in esp_output. We also add esp6_xmit which is used for the layer 2 fallback. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
32 lines
838 B
C
32 lines
838 B
C
#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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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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