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IPv4 multicast: fix netstat -g
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Authored by karels on Mar 21 2022, 8:06 PM.

Details

Summary

The vif structure includes fields at the end which are #ifdef KERNEL,
causing a mismatch between the structure sizes between kernel and
user level. netstat -g failed with an ENOMEM on the sysctl to fetch
the vif table. Change the vif sysctl code in ip_mroute to copy out
only the user-level-visible portion of each table entry.

Test Plan

tested by running netstat -g

Diff Detail

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