diff options
Diffstat (limited to 'include/linux/netfilter.h')
| -rw-r--r-- | include/linux/netfilter.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index ec60856..54b97a1 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -193,6 +193,11 @@ extern void nf_ct_attach(struct sk_buff *, struct sk_buff *); /* FIXME: Before cache is ever used, this must be implemented for real. */ extern void nf_invalidate_cache(int pf); +/* Call this before modifying an existing packet: ensures it is + modifiable and linear to the point you care about (writable_len). + Returns true or false. */ +extern int skb_make_writable(struct sk_buff **pskb, unsigned int writable_len); + #else /* !CONFIG_NETFILTER */ #define NF_HOOK(pf, hook, skb, indev, outdev, okfn) (okfn)(skb) static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {} |