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[IPSEC]: Move xfrm_state_check into xfrm_output.c

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The functions xfrm_state_check and xfrm_state_check_space are only used by
the output code in xfrm_output.c so we can move them over.

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 2007-10-08 17:25:08 -07:00 committed by David S. Miller
parent 406ef77c89
commit 83815dea47
3 changed files with 22 additions and 24 deletions
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1
include/net/xfrm.h
View File

@ -1013,7 +1013,6 @@ extern void xfrm_spd_getinfo(struct xfrmk_spdinfo *si);
extern int xfrm_replay_check(struct xfrm_state *x, __be32 seq);
extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
extern void xfrm_replay_notify(struct xfrm_state *x, int event);
extern int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb);
extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
extern int xfrm_init_state(struct xfrm_state *x);
extern int xfrm_output(struct sk_buff *skb);

22
net/xfrm/xfrm_output.c
View File

@ -18,6 +18,28 @@
#include <net/dst.h>
#include <net/xfrm.h>
static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
{
int nhead = x->props.header_len + LL_RESERVED_SPACE(skb->dst->dev)
- skb_headroom(skb);
if (nhead > 0)
return pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
/* Check tail too... */
return 0;
}
static int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb)
{
int err = xfrm_state_check_expire(x);
if (err < 0)
goto err;
err = xfrm_state_check_space(x, skb);
err:
return err;
}
int xfrm_output(struct sk_buff *skb)
{
struct dst_entry *dst = skb->dst;

23
net/xfrm/xfrm_state.c
View File

@ -1152,29 +1152,6 @@ int xfrm_state_check_expire(struct xfrm_state *x)
}
EXPORT_SYMBOL(xfrm_state_check_expire);
static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
{
int nhead = x->props.header_len + LL_RESERVED_SPACE(skb->dst->dev)
- skb_headroom(skb);
if (nhead > 0)
return pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
/* Check tail too... */
return 0;
}
int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb)
{
int err = xfrm_state_check_expire(x);
if (err < 0)
goto err;
err = xfrm_state_check_space(x, skb);
err:
return err;
}
EXPORT_SYMBOL(xfrm_state_check);
struct xfrm_state *
xfrm_state_lookup(xfrm_address_t *daddr, __be32 spi, u8 proto,
unsigned short family)