[SRU][OEM-OSP1-B][PATCH 0/1] iwlwifi: mvm: disable TX-AMSDU on older NICs

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/1830192

[Impact]
Wireless connection drop frequently under stressed traffic due to
firmware crash and hardware reset on Intel 8260/8265/... .

[Fix]
Commit cfb21b11b891 ("iwlwifi: mvm: disable TX-AMSDU on older NICs") in
v5.3 fixes this issue.

[Test Case]
1. Get associated to some base station and generate some traffic, e.g. run
   speedtest.
2. Check if Wi-Fi firmware crash logs appear in dmesg.

   iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting
0x2000000.
   ...
   ieee80211 phy0: Hardware restart was requested

[Regression Potential]
Low. This affects only models that should not have TX-AMSDU enabled.

[Other Info]
Commit 438af9698b0f ("iwlwifi: mvm: support mac80211 AMSDU") in v5.1
caused this bug, and it was backported to 5.0-oem-osp1 in bug 1809224.

Johannes Berg (1):
  iwlwifi: mvm: disable TX-AMSDU on older NICs

 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

-- 
2.25.1