https://github.com/torvalds/linux
Revision a7551b75fe47fb6fb70f679935845e741c5e0855 authored by Robert Love on 24 March 2010, 10:02:04 UTC, committed by David S. Miller on 26 March 2010, 18:56:03 UTC
If the user buffer count was 256 the shift would place a 1
in the offset region leading to errors. It also overwrites
the uers buffer list. This patch makes sure that at most
256 user buffers are allowed for DDP and the buffer count
is masked properly such that it doesn't overwrite the offset
when shifting the bits.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Frank Zhang <frank_1.zhang@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent e0fce69
History
Tip revision: a7551b75fe47fb6fb70f679935845e741c5e0855 authored by Robert Love on 24 March 2010, 10:02:04 UTC
ixgbe: Don't allow user buffer count to exceed 256
Tip revision: a7551b7
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