Helper to calculate the linear data space in the skb.
Signed-off-by: Ricardo Martinez <ricardo.martinez@xxxxxxxxxxxxxxx>
---
include/linux/skbuff.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 3270cb72e4d8..bd667c0129ad 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1665,6 +1665,11 @@ static inline void skb_set_end_offset(struct sk_buff *skb, unsigned int offset)
}
#endif
+static inline unsigned int skb_data_area_size(struct sk_buff *skb)
+{
+ return skb_end_pointer(skb) - skb->data;
+}
+
struct ubuf_info *msg_zerocopy_alloc(struct sock *sk, size_t size);
struct ubuf_info *msg_zerocopy_realloc(struct sock *sk, size_t size,
struct ubuf_info *uarg);
--
2.25.1
