This is a note to let you know that I've just added the patch titled
net: add skb_checksum_complete_unset
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-add-skb_checksum_complete_unset.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Apr 29 11:59:49 CEST 2015
From: Tom Herbert <tom@xxxxxxxxxxxxxxx>
Date: Mon, 20 Apr 2015 14:10:04 -0700
Subject: net: add skb_checksum_complete_unset
From: Tom Herbert <tom@xxxxxxxxxxxxxxx>
[ Upstream commit 4e18b9adf2f910ec4d30b811a74a5b626e6c6125 ]
This function changes ip_summed to CHECKSUM_NONE if CHECKSUM_COMPLETE
is set. This is called to discard checksum-complete when packet
is being modified and checksum is not pulled for headers in a layer.
Signed-off-by: Tom Herbert <tom@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/skbuff.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3013,6 +3013,18 @@ static inline bool __skb_checksum_valida
*/
#define CHECKSUM_BREAK 76
+/* Unset checksum-complete
+ *
+ * Unset checksum complete can be done when packet is being modified
+ * (uncompressed for instance) and checksum-complete value is
+ * invalidated.
+ */
+static inline void skb_checksum_complete_unset(struct sk_buff *skb)
+{
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
+}
+
/* Validate (init) checksum based on checksum complete.
*
* Return values:
Patches currently in stable-queue which might be from tom@xxxxxxxxxxxxxxx are
queue-4.0/net-rfs-fix-crash-in-get_rps_cpus.patch
queue-4.0/ppp-call-skb_checksum_complete_unset-in-ppp_receive_frame.patch
queue-4.0/net-add-skb_checksum_complete_unset.patch
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