FreeBSD/src b08d611 (r338850)sys/net if_vlan.c if_var.h

fix vlan locking to permit sx acquisition in ioctl calls

- update vlan(9) to handle changes earlier this year in multicast locking

Tested by: np@, darkfiberu at gmail.com

PR:     230510
Reviewed by:    mjoras@, shurd@, sbruno@
Approved by:    re (gjb@)
Sponsored by:   Limelight Networks
Differential Revision:  https://reviews.freebsd.org/D16808
DeltaFile
+76-143sys/net/if_vlan.c
+1-0sys/net/if_var.h
+77-1432 files

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