net: qualcomm: rmnet: return earlier for bad checksum

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In rmnet_map_ipv4_dl_csum_trailer(), if the sum of the trailer
checksum and the pseudo checksum is non-zero, checksum validation
has failed.  We can return an error as soon as we know that.

We can do the same thing in rmnet_map_ipv6_dl_csum_trailer().

Add some comments that explain where we're headed.

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 09:37:32 -05:00 • committed by David S. Miller

parent 9d0407bc4c

commit fab01a6f3a

1 changed files with 27 additions and 9 deletions

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drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c

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