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xfrm: Introduce xfrm_input_afinfo to access the the callbacks properly

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IPv6 can be build as a module, so we need mechanism to access
the address family dependent callback functions properly.
Therefore we introduce xfrm_input_afinfo, similar to that
what we have for the address family dependent part of
policies and states.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert
2014-03-14 07:28:07 +01:00
parent 870a2df4ca
commit 2f32b51b60
4 changed files with 99 additions and 13 deletions
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23
include/net/xfrm.h
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@@ -349,6 +349,16 @@ int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family);
void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo);
struct xfrm_input_afinfo {
unsigned int family;
struct module *owner;
int (*callback)(struct sk_buff *skb, u8 protocol,
int err);
};
int xfrm_input_register_afinfo(struct xfrm_input_afinfo *afinfo);
int xfrm_input_unregister_afinfo(struct xfrm_input_afinfo *afinfo);
void xfrm_state_delete_tunnel(struct xfrm_state *x);
struct xfrm_type {
@@ -1392,6 +1402,7 @@ void xfrm4_init(void);
int xfrm_state_init(struct net *net);
void xfrm_state_fini(struct net *net);
void xfrm4_state_init(void);
void xfrm4_protocol_init(void);
#ifdef CONFIG_XFRM
int xfrm6_init(void);
void xfrm6_fini(void);
@@ -1773,18 +1784,6 @@ static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m)
return ret;
}
static inline int xfrm_rcv_cb(struct sk_buff *skb, unsigned int family,
u8 protocol, int err)
{
switch(family) {
#ifdef CONFIG_INET
case AF_INET:
return xfrm4_rcv_cb(skb, protocol, err);
#endif
}
return 0;
}
static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x,
unsigned int family)
{