net: add xdp_data_len field in skb_shared_info

Introduce xdp_data_len in skb_shared_info data structure. xdp_data_len will be used to account non-linear area length for xdp multibuffer
LorenzoBianconi · Oct 2, 2020 · ff9b3a7 · ff9b3a7
1 parent 94ff09e
commit ff9b3a7
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
@@ -510,8 +510,13 @@ int skb_zerocopy_iter_stream(struct sock *sk, struct sk_buff *skb,
  * the end of the header data, ie. at skb->end.
  */
 struct skb_shared_info {
-	__u8		__unused;
-	__u8		meta_len;
+	union {
+		struct {
+			__u8		__unused;
+			__u8		meta_len;
+		};
+		__u16 xdp_data_len;
+	};
 	__u8		nr_frags;
 	__u8		tx_flags;
 	unsigned short	gso_size;