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Ensure consistent error messages from ifconfig
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Authored by hselasky on Nov 26 2020, 9:48 AM.

Details

Summary

If multiple threads are invoking ifconfig XXX create a race may occur which can lead to two different error messages for the same error.

a) ifconfig: SIOCIFCREATE2: File exists
b) ifconfig: interface XXX already exists

This patch ensures ifconfig prints the same error code for the same case.

MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.