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-rw-r--r--include/linux/netfilter_ipv6/ip6_tables.h12
-rw-r--r--include/linux/skbuff.h13
2 files changed, 24 insertions, 1 deletions
diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h
index f549adccc94c..1bc898b14a80 100644
--- a/include/linux/netfilter_ipv6/ip6_tables.h
+++ b/include/linux/netfilter_ipv6/ip6_tables.h
@@ -287,7 +287,17 @@ extern unsigned int ip6t_do_table(struct sk_buff *skb,
struct xt_table *table);
/* Check for an extension */
-extern int ip6t_ext_hdr(u8 nexthdr);
+static inline int
+ip6t_ext_hdr(u8 nexthdr)
+{ return (nexthdr == IPPROTO_HOPOPTS) ||
+ (nexthdr == IPPROTO_ROUTING) ||
+ (nexthdr == IPPROTO_FRAGMENT) ||
+ (nexthdr == IPPROTO_ESP) ||
+ (nexthdr == IPPROTO_AH) ||
+ (nexthdr == IPPROTO_NONE) ||
+ (nexthdr == IPPROTO_DSTOPTS);
+}
+
/* find specified header and get offset to it */
extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
int target, unsigned short *fragoff);
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 33370271b8b2..70a3f8d49118 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -481,6 +481,7 @@ struct sk_buff {
union {
__u32 mark;
__u32 dropcount;
+ __u32 avail_size;
};
sk_buff_data_t transport_header;
@@ -1366,6 +1367,18 @@ static inline int skb_tailroom(const struct sk_buff *skb)
}
/**
+ * skb_availroom - bytes at buffer end
+ * @skb: buffer to check
+ *
+ * Return the number of bytes of free space at the tail of an sk_buff
+ * allocated by sk_stream_alloc()
+ */
+static inline int skb_availroom(const struct sk_buff *skb)
+{
+ return skb_is_nonlinear(skb) ? 0 : skb->avail_size - skb->len;
+}
+
+/**
* skb_reserve - adjust headroom
* @skb: buffer to alter
* @len: bytes to move