CVS commit: src/sys/net

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Fri Sep  2 04:34:58 UTC 2022

Modified Files:
        src/sys/net: if.c

Log Message:
f_detach(): Drain the protocol input queues before the pr_purgeif()
calls; pktq_barrier() doesn't remove packets from the queue, it waits
for the packets enqueued before the barrier to drain.  This, in turn,
may cause the protocols to gain additional references to the interface
that's detaching.  By draining the queues first, we ensure that no
additional references will be taken after calling pr_purgeif().


To generate a diff of this commit:
cvs rdiff -u -r1.521 -r1.522 src/sys/net/if.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.