On Thu, Sep 27, 2007 at 06:29:16PM +0800, Herbert Xu ([EMAIL PROTECTED]) wrote:
> On Thu, Sep 27, 2007 at 02:07:53PM +0400, Evgeniy Polyakov wrote:
> >
> > It forces all inpuit/pre/post/forward hooks to be enbled not as a direct
> > function call, but as additional lookups. And unability to remove
> > netfilter from config. And just because of couple of checksum helpers...
>
> I'm certainly not against patches moving that code out of
> netfilter.
I've attached simple patch which moves checksum helpers out of
CONFIG_NETFILTER option but still in the same linux/netfilter.h header.
This should be enough for removing 'select NETFILTER' in your patch.
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 1dd075e..6c3fb10 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -40,6 +40,29 @@
#endif
#ifdef __KERNEL__
+
+static inline void nf_csum_replace4(__sum16 *sum, __be32 from, __be32 to)
+{
+ __be32 diff[] = { ~from, to };
+
+ *sum = csum_fold(csum_partial((char *)diff, sizeof(diff),
~csum_unfold(*sum)));
+}
+
+static inline void nf_csum_replace2(__sum16 *sum, __be16 from, __be16 to)
+{
+ nf_csum_replace4(sum, (__force __be32)from, (__force __be32)to);
+}
+
+extern void nf_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb,
+ __be32 from, __be32 to, int pseudohdr);
+
+static inline void nf_proto_csum_replace2(__sum16 *sum, struct sk_buff *skb,
+ __be16 from, __be16 to, int pseudohdr)
+{
+ nf_proto_csum_replace4(sum, skb, (__force __be32)from,
+ (__force __be32)to, pseudohdr);
+}
+
#ifdef CONFIG_NETFILTER
extern void netfilter_init(void);
@@ -289,28 +312,6 @@ extern void nf_invalidate_cache(int pf);
Returns true or false. */
extern int skb_make_writable(struct sk_buff **pskb, unsigned int writable_len);
-static inline void nf_csum_replace4(__sum16 *sum, __be32 from, __be32 to)
-{
- __be32 diff[] = { ~from, to };
-
- *sum = csum_fold(csum_partial((char *)diff, sizeof(diff),
~csum_unfold(*sum)));
-}
-
-static inline void nf_csum_replace2(__sum16 *sum, __be16 from, __be16 to)
-{
- nf_csum_replace4(sum, (__force __be32)from, (__force __be32)to);
-}
-
-extern void nf_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb,
- __be32 from, __be32 to, int pseudohdr);
-
-static inline void nf_proto_csum_replace2(__sum16 *sum, struct sk_buff *skb,
- __be16 from, __be16 to, int pseudohdr)
-{
- nf_proto_csum_replace4(sum, skb, (__force __be32)from,
- (__force __be32)to, pseudohdr);
-}
-
struct nf_afinfo {
unsigned short family;
__sum16 (*checksum)(struct sk_buff *skb, unsigned int hook,
--
Evgeniy Polyakov
-
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