git: 054c5ddf587a - main - net80211: add IEEE80211_IS_LOCKED()

The branch main has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=054c5ddf587a7a0c430cf64dbf100b718eafdcc5

commit 054c5ddf587a7a0c430cf64dbf100b718eafdcc5
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2025-01-15 22:50:01 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2025-01-15 23:36:00 +0000

    net80211: add IEEE80211_IS_LOCKED()
    
    When trying to sort out a teardown locking problem (downcall in the
    driver can sleep) I found that the fan-out tree was getting too big
    to fix net80211 locking per-se for this while working on entirely
    different problems.
    Add IEEE80211_IS_LOCKED() so the driver can check and un-/re-lock as
    necessary (as we do in other cases already) to avoid panics on
    debug kernels left and right.
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      3 days
    Reviewed by:    adrian
    Differential Revision: https://reviews.freebsd.org/D48475
---
 sys/net80211/ieee80211_freebsd.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/net80211/ieee80211_freebsd.h b/sys/net80211/ieee80211_freebsd.h
index b58c55cc7652..ed913f7b3661 100644
--- a/sys/net80211/ieee80211_freebsd.h
+++ b/sys/net80211/ieee80211_freebsd.h
@@ -73,6 +73,8 @@ typedef struct {
 	mtx_assert(IEEE80211_LOCK_OBJ(_ic), MA_OWNED)
 #define	IEEE80211_UNLOCK_ASSERT(_ic) \
 	mtx_assert(IEEE80211_LOCK_OBJ(_ic), MA_NOTOWNED)
+#define	IEEE80211_IS_LOCKED(_ic) \
+	mtx_owned(IEEE80211_LOCK_OBJ(_ic))
 
 /*
  * Transmit lock.