git: if_gre: Reimplement output loop detection using mbuf 'loop_cnt'

[Aaron LI]

commit 2e73b7f5b028712037c6cb2ffccd04f4a1c1a16a
Author: Aaron LI <aly at aaronly.me>
Date:   Thu Jan 25 22:22:43 2024 +0800

    if_gre: Reimplement output loop detection using mbuf 'loop_cnt'
    
    The original method made use the 'called' member inside the interface
    softc struct, which was quite rudimentary and not MP-safe.
    
    Reimplement the loop detection using the newly added mbuf(9)
    'm_pkthdr.loop_cnt' field.  In addition, change the errno of this case
    from EIO to ELOOP.

Summary of changes:
 sys/net/gre/if_gre.c | 10 ++++------
 sys/net/gre/if_gre.h |  2 --
 2 files changed, 4 insertions(+), 8 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/2e73b7f5b028712037c6cb2ffccd04f4a1c1a16a


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