net: qualcomm: rmnet: trailer value is a checksum

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The csum_value field in the rmnet_map_dl_csum_trailer structure is a
"real" Internet checksum.  It is a 16 bit value, in big endian format,
which represents an inverted ones' complement sum over pairs of bytes.

Make that clear by changing its type to __sum16.

This makes a typecast in rmnet_map_ipv4_dl_csum_trailer() and
another in rmnet_map_ipv6_dl_csum_trailer() unnecessary.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Alex Elder 2021-06-12 09:37:34 -05:00 • committed by David S. Miller

parent 698aa6c46b

commit be754f6435

2 changed files with 3 additions and 4 deletions

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include/linux/if_rmnet.h

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