This is a note to let you know that I've just added the patch titled
net: fec: fix receive VLAN CTAG HW acceleration issue
to the 3.19-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-fec-fix-receive-vlan-ctag-hw-acceleration-issue.patch
and it can be found in the queue-3.19 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 Tue Mar 24 11:00:07 CET 2015
From: Nimrod Andy <B38611@xxxxxxxxxxxxx>
Date: Tue, 10 Mar 2015 19:09:41 +0800
Subject: net: fec: fix receive VLAN CTAG HW acceleration issue
From: Nimrod Andy <B38611@xxxxxxxxxxxxx>
[ Upstream commit af5cbc9822f6bbe399925760a4d5ee82c21f258c ]
The current driver support receive VLAN CTAG HW acceleration feature
(NETIF_F_HW_VLAN_CTAG_RX) through software simulation. There calls the
api .skb_copy_to_linear_data_offset() to skip the VLAN tag, but there
have overlap between the two memory data point range. The patch just fix
the issue.
V2:
Michael Grzeschik suggest to use memmove() instead of skb_copy_to_linear_data_offset().
Reported-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
Fixes: 1b7bde6d659d ("net: fec: implement rx_copybreak to improve rx performance")
Signed-off-by: Fugang Duan <B38611@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/freescale/fec_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1448,8 +1448,7 @@ fec_enet_rx_queue(struct net_device *nde
vlan_packet_rcvd = true;
- skb_copy_to_linear_data_offset(skb, VLAN_HLEN,
- data, (2 * ETH_ALEN));
+ memmove(skb->data + VLAN_HLEN, data, ETH_ALEN * 2);
skb_pull(skb, VLAN_HLEN);
}
Patches currently in stable-queue which might be from B38611@xxxxxxxxxxxxx are
queue-3.19/net-fec-fix-receive-vlan-ctag-hw-acceleration-issue.patch
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