git: a58f30788070 - main - [iwn] Don't originate NULL data frames in net80211

The branch main has been updated by adrian:

URL: https://cgit.FreeBSD.org/src/commit/?id=a58f307880700fff7646416101c301e4d1784bfb

commit a58f307880700fff7646416101c301e4d1784bfb
Author:     Adrian Chadd <adrian@FreeBSD.org>
AuthorDate: 2025-08-27 20:06:55 +0000
Commit:     Adrian Chadd <adrian@FreeBSD.org>
CommitDate: 2025-09-20 00:46:32 +0000

    [iwn] Don't originate NULL data frames in net80211
    
    Don't originate null data frames in net80211; leave that up to the
    iwn firmware.
    
    This should fix a bunch of cases where we're seeing out of sequence
    802.11n aggregation data packets because net80211 power management
    stuff was triggering NULL data frames when we don't need them and
    messing up the firmware / ring buffer sequence number space.
    
    Differential Revision:  https://reviews.freebsd.org/D52299
    
    Locally tested:
    
    * 6205, STA mode
---
 sys/dev/iwn/if_iwn.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/dev/iwn/if_iwn.c b/sys/dev/iwn/if_iwn.c
index 6270de3627e6..a949103f20d4 100644
--- a/sys/dev/iwn/if_iwn.c
+++ b/sys/dev/iwn/if_iwn.c
@@ -586,6 +586,8 @@ iwn_attach(device_t dev)
 
 	/* Driver / firmware assigned sequence numbers */
 	ic->ic_flags_ext |= IEEE80211_FEXT_SEQNO_OFFLOAD;
+	/* Don't originate null data frames in net80211 */
+	ic->ic_flags_ext |= IEEE80211_FEXT_NO_NULLDATA;
 
 	/* Read MAC address, channels, etc from EEPROM. */
 	if ((error = iwn_read_eeprom(sc, ic->ic_macaddr)) != 0) {