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c7e6f0e992
We prohibit non-aligned access in kernel mode, but some special NIC driver needs to support kernel-state unaligned access. For example, when the bus does not support unaligned access, IP header parsing will cause non-aligned access and driver does not recopy the skb buffer to dma for performance reasons. Added kernel_enable & user_enable to control unaligned access and added kernel_count & user_count for statistical unaligned access. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de> |
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