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[IPSEC]: Kill unused decap state argument

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This patch removes the decap_state argument from the xfrm input hook.
Previously this function allowed the input hook to share state with
the post_input hook.  The latter has since been removed.

The only purpose for it now is to check the encap type.  However, it
is easier and better to move the encap type check to the generic
xfrm_rcv function.  This allows us to get rid of the decap state
argument altogether.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2006-04-01 00:52:46 -08:00 committed by David S. Miller
parent 15901dc93f
commit e695633e21
11 changed files with 14 additions and 15 deletions
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2
include/net/xfrm.h
View file

@ -251,7 +251,7 @@ struct xfrm_type
int (*init_state)(struct xfrm_state *x);
void (*destructor)(struct xfrm_state *);
int (*input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb);
int (*input)(struct xfrm_state *, struct sk_buff *skb);
int (*output)(struct xfrm_state *, struct sk_buff *pskb);
/* Estimate maximal size of result of transformation of a dgram */
u32 (*get_max_size)(struct xfrm_state *, int size);

2
net/ipv4/ah4.c
View file

@ -116,7 +116,7 @@ static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
return err;
}
static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
{
int ah_hlen;
struct iphdr *iph;

5
net/ipv4/esp4.c
View file

@ -133,7 +133,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
* expensive, so we only support truncated data, which is the recommended
* and common case.
*/
static int esp_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int esp_input(struct xfrm_state *x, struct sk_buff *skb)
{
struct iphdr *iph;
struct ip_esp_hdr *esph;
@ -208,9 +208,6 @@ static int esp_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struc
struct xfrm_encap_tmpl *encap = x->encap;
struct udphdr *uh;
if (encap->encap_type != decap->decap_type)
goto out;
uh = (struct udphdr *)(iph + 1);
encap_len = (void*)esph - (void*)uh;

3
net/ipv4/ipcomp.c
View file

@ -81,8 +81,7 @@ static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb)
return err;
}
static int ipcomp_input(struct xfrm_state *x,
struct xfrm_decap_state *decap, struct sk_buff *skb)
static int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb)
{
u8 nexthdr;
int err = 0;

5
net/ipv4/xfrm4_input.c
View file

@ -90,6 +90,9 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
if (unlikely(x->km.state != XFRM_STATE_VALID))
goto drop_unlock;
if (x->encap->encap_type != encap_type)
goto drop_unlock;
if (x->props.replay_window && xfrm_replay_check(x, seq))
goto drop_unlock;
@ -97,7 +100,7 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
goto drop_unlock;
xfrm_vec[xfrm_nr].decap.decap_type = encap_type;
if (x->type->input(x, &(xfrm_vec[xfrm_nr].decap), skb))
if (x->type->input(x, skb))
goto drop_unlock;
/* only the first xfrm gets the encap type */

2
net/ipv4/xfrm4_tunnel.c
View file

@ -21,7 +21,7 @@ static int ipip_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
static int ipip_xfrm_rcv(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int ipip_xfrm_rcv(struct xfrm_state *x, struct sk_buff *skb)
{
return 0;
}

2
net/ipv6/ah6.c
View file

@ -229,7 +229,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
return err;
}
static int ah6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
{
/*
* Before process AH

2
net/ipv6/esp6.c
View file

@ -130,7 +130,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
return err;
}
static int esp6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
{
struct ipv6hdr *iph;
struct ipv6_esp_hdr *esph;

2
net/ipv6/ipcomp6.c
View file

@ -63,7 +63,7 @@ static void **ipcomp6_scratches;
static int ipcomp6_scratch_users;
static LIST_HEAD(ipcomp6_tfms_list);
static int ipcomp6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
{
int err = 0;
u8 nexthdr = 0;

2
net/ipv6/xfrm6_input.c
View file

@ -65,7 +65,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, u32 spi)
if (xfrm_state_check_expire(x))
goto drop_unlock;
nexthdr = x->type->input(x, &(xfrm_vec[xfrm_nr].decap), skb);
nexthdr = x->type->input(x, skb);
if (nexthdr <= 0)
goto drop_unlock;

2
net/ipv6/xfrm6_tunnel.c
View file

@ -351,7 +351,7 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
static int xfrm6_tunnel_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
return 0;
}