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authorKevin Hao <haokexin@gmail.com>2021-01-21 15:09:06 +0800
committerJakub Kicinski <kuba@kernel.org>2021-01-22 18:03:42 -0800
commitdb2805150a0f27c00ad286a29109397a7723adad (patch)
treeb24439b0670ed1e5ce7ba53eec29fc9d727b71f4 /Documentation/parisc
parent7e0e63d09516e96994c879f07c5a3c3269d7015e (diff)
downloadlinux-db2805150a0f27c00ad286a29109397a7723adad.tar.gz
net: octeontx2: Make sure the buffer is 128 byte aligned
The octeontx2 hardware needs the buffer to be 128 byte aligned.
But in the current implementation of napi_alloc_frag(), it can't
guarantee the return address is 128 byte aligned even the request size
is a multiple of 128 bytes, so we have to request an extra 128 bytes and
use the PTR_ALIGN() to make sure that the buffer is aligned correctly.

Fixes: 7a36e4918e30 ("octeontx2-pf: Use the napi_alloc_frag() to alloc the pool buffers")
Reported-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Tested-by: Subbaraya Sundeep <sbhatta@marvell.com>
Link: https://lore.kernel.org/r/20210121070906.25380-1-haokexin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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