Gleb Smirnoff 0a76c63dd4 ng_l2tp: improve seq structure locking.
Cover few cases of access to seq without lock missed in 702f98951d5.
There are no known bugs fixed with this change, however. With INVARIANTS
embed ng_l2tp_seq_check() into lock/unlock macros. Slightly reduce number
of locks/unlocks per packet keeping the lock between functions.

Reviewed by:		mjg, markj
Differential Revision:	https://reviews.freebsd.org/D31476
2021-09-10 11:27:13 -07:00
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2021-01-27 21:22:51 +01:00