From 5a8550c00e03d44d20c9c2984d814d267dd560a9 Mon Sep 17 00:00:00 2001
From: Sven Paulsen <info@sven-paulsen.de>
Date: Tue, 1 Nov 2016 16:12:09 +0100
Subject: [PATCH] added backport for skb_put_padto

added backport for skb_put_padto to support kernel versions <= 3.19.x
---
 src/compat_skbuff.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/compat_skbuff.h b/src/compat_skbuff.h
index 4af0f65..721b57d 100644
--- a/src/compat_skbuff.h
+++ b/src/compat_skbuff.h
@@ -20,4 +20,19 @@ struct udphdr;
 #   define skb_secmark(skb) 0
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0)
+static inline int skb_put_padto(struct sk_buff *skb, unsigned int len)
+{
+    unsigned int size = skb->len;
+ 
+    if (unlikely(size < len)) {
+        len -= size;
+        if (skb_pad(skb, len)) return -ENOMEM;
+        __skb_put(skb, len);
+    }
+
+    return 0;
+}
+#endif
+
 #endif /* COMPAT_SKBUFF_H */