device: prepare skb_list_walk_safe for upstreaming

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/device.h b/src/device.h
index b15a8be..c91f305 100644
--- a/src/device.h
+++ b/src/device.h
@@ -62,4 +62,12 @@ struct wg_device {
 int wg_device_init(void);
 void wg_device_uninit(void);
 
+/* Later after the dust settles, this can be moved into include/linux/skbuff.h,
+ * where virtually all code that deals with GSO segs can benefit, around ~30
+ * drivers as of writing.
+ */
+#define skb_list_walk_safe(first, skb, next)                                   \
+	for (skb = first, next = skb->next; skb;                               \
+	     skb = next, next = skb ? skb->next : NULL)
+
 #endif /* _WG_DEVICE_H */