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authorHerbert Xu <herbert@gondor.apana.org.au>2009-06-22 02:25:25 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-23 16:36:25 -0700
commitd55d87fdff8252d0e2f7c28c2d443aee17e9d70f (patch)
treea4bfb0a47525672c690b63e85bf3f47f4ab014f7 /net/ax25
parentd5fdd6babcfc2b0e6a8da1acf492a69fb54b4c47 (diff)
downloadlinux-d55d87fdff8252d0e2f7c28c2d443aee17e9d70f.tar.gz
net: Move rx skb_orphan call to where needed
In order to get the tun driver to account packets, we need to be able to receive packets with destructors set. To be on the safe side, I added an skb_orphan call for all protocols by default since some of them (IP in particular) cannot handle receiving packets destructors properly. Now it seems that at least one protocol (CAN) expects to be able to pass skb->sk through the rx path without getting clobbered. So this patch attempts to fix this properly by moving the skb_orphan call to where it's actually needed. In particular, I've added it to skb_set_owner_[rw] which is what most users of skb->destructor call. This is actually an improvement for tun too since it means that we only give back the amount charged to the socket when the skb is passed to another socket that will also be charged accordingly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Oliver Hartkopp <olver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ax25')
-rw-r--r--net/ax25/ax25_in.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 5f1d2107a1d..de56d3983de 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -437,8 +437,7 @@ free:
int ax25_kiss_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev)
{
- skb->sk = NULL; /* Initially we don't know who it's for */
- skb->destructor = NULL; /* Who initializes this, dammit?! */
+ skb_orphan(skb);
if (!net_eq(dev_net(dev), &init_net)) {
kfree_skb(skb);