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xfrm: move xfrm4_extract_header to common helper

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The function only initializes the XFRM CB in the skb.

After previous patch xfrm4_extract_header is only called from
net/xfrm/xfrm_{input,output}.c.

Because of IPV6=m linker errors the ipv6 equivalent
(xfrm6_extract_header) was already placed in xfrm_inout.h because
we can't call functions residing in a module from the core.

So do the same for the ipv4 helper and place it next to the ipv6 one.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal
2020-05-06 09:40:08 +02:00
committed by Steffen Klassert
parent a269fbfc4e
commit 171916cbd5
3 changed files with 14 additions and 22 deletions
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include/net/xfrm.h
-1
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@@ -1562,7 +1562,6 @@ int pktgen_xfrm_outer_mode_output(struct xfrm_state *x, struct sk_buff *skb);
#endif
void xfrm_local_error(struct sk_buff *skb, int mtu);
int xfrm4_extract_header(struct sk_buff *skb);
int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb);
int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
int encap_type);