[20/30] irda: Add irda_skb_cb qdisc related padding

From: Greg KH
Date: Fri Nov 06 2009 - 17:06:31 EST

2.6.29-stable review patch. If anyone has any objections, please let us know.

From: Samuel Ortiz <samuel@xxxxxxxxxx>

commit 69c30e1e7492192f882a3fc11888b320fde5206a upstream.

We need to pad irda_skb_cb in order to keep it safe accross dev_queue_xmit()
calls. This is some ugly and temporary hack triggered by recent qisc code
Even though it fixes bugzilla.kernel.org bug #11795, it will be replaced by a
proper fix before 2.6.29 is released.

Signed-off-by: Samuel Ortiz <samuel@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Chuck Ebbert <cebbert@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

include/net/irda/irda_device.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/include/net/irda/irda_device.h
+++ b/include/net/irda/irda_device.h
@@ -135,9 +135,11 @@ struct dongle_reg {

* Per-packet information we need to hide inside sk_buff
- * (must not exceed 48 bytes, check with struct sk_buff)
+ * (must not exceed 48 bytes, check with struct sk_buff)
+ * The default_qdisc_pad field is a temporary hack.
struct irda_skb_cb {
+ unsigned int default_qdisc_pad;
magic_t magic; /* Be sure that we can trust the information */
__u32 next_speed; /* The Speed to be set *after* this frame */
__u16 mtt; /* Minimum turn around time */

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