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| author |   Lothar Waßmann <LW@KARO-electronics.de> | 2014-11-07 10:02:47 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-11-07 12:08:58 -0500 |
| commit | 1310b544e5708ab5e4de46e9c70f54b9fd8350b2 (patch) | |
| tree | 955eea9a2ce48066fbb2fc56b4ffd0ea57a09b3d /kernel | |
| parent | Merge tag 'master-2014-11-04' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless (diff) | |
| download | linux-dev-1310b544e5708ab5e4de46e9c70f54b9fd8350b2.tar.xz linux-dev-1310b544e5708ab5e4de46e9c70f54b9fd8350b2.zip | |
net: fec: fix regression on i.MX28 introduced by rx_copybreak support
commit 1b7bde6d659d ("net: fec: implement rx_copybreak to improve rx performance")
introduced a regression for i.MX28. The swap_buffer() function doing
the endian conversion of the received data on i.MX28 may access memory
beyond the actual packet size in the DMA buffer. fec_enet_copybreak()
does not copy those bytes, so that the last bytes of a packet may be
filled with invalid data after swapping.
This will likely lead to checksum errors on received packets.
E.g. when trying to mount an NFS rootfs:
UDP: bad checksum. From 192.168.1.225:111 to 192.168.100.73:44662 ulen 36
Do the byte swapping and copying to the new skb in one go if
necessary.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions