Subject: Re: [PATCH RFC 4/6] tun: orphan frags on xmit

From: "Michael S. Tsirkin" <[email-masked]>
Date: Tue, 8 May 2012 17:36:29 +0300

On Mon, May 07, 2012 at 04:54:46PM +0300, Michael S. Tsirkin wrote:
> tun xmit is actually receive of the internal tun
> socket. Orphan the frags same as we do for normal rx path.
> 
> Signed-off-by: Michael S. Tsirkin <[email-masked]>

If tun is built as a module, skb_copy_ubufs needs to be exported:

---->

Signed-off-by: Michael S. Tsirkin <[email-masked]>

---

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 83b04d9..a809014 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -765,7 +765,7 @@ int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask)
 	skb_shinfo(skb)->tx_flags &= ~SKBTX_DEV_ZEROCOPY;
 	return 0;
 }
-
+EXPORT_SYMBOL_GPL(skb_copy_ubufs);
 
 /**
  *	skb_clone	-	duplicate an sk_buff