machnet_send system call does not return proper return values.

[sarsanaee]

Hi,

I believe most of machnet system calls do not return proper value, explaining the root cause of failure to developers.

This is probably a good first pull request to create.

Thanks,
Alireza

[marinosi]

Hi @sarsanaee,

Which system calls are you referring to? If this is the machnet API (library), we should be careful what we do expose; some errors are internal (i.e., the user cannot do much about it) and some others might be useful (e.g., something like EAGAIN on transmit if the channel/ring is full.