tree 0256f33cedaaf918d0ebca544a1e9c459b6962c5
parent c668313e9ff39b606410ed4b0208f9c1ab36ccba
author Andrew Geissler <geissonator@yahoo.com> 1716563127 -0500
committer Andrew Geissler <geissonator@yahoo.com> 1716927942 -0500

Only allow a maximum packet size of 255 bytes

This code was written with an assumption that the input/output buffer
sizes would not exceed 255 bytes. The assumption can be seen throughout
the code where it is using a "uint8_t" for size calculations when doing
offsets into the data buffers.

As this application was written for OpenBMC and the service list
provided by OpenBMC is very minimal, supporting a maximum request
buffer of 255 bytes is a fine assumption. Just need to enforce it.

Without this change, very unexpected things can happen with uint8_t
overflow issues when a packet size greater then 255 bytes is passed in
or created internally.

Tested:
- Verified a request with a packet size over 255 bytes is rejected

Change-Id: Icec15fe100d6514a3309fa89e9f79d565de05553
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>