This is a note to let you know that I've just added the patch titled
mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: mac80211_hwsim-enforce-ps_manual_poll-to-be-set-after-ps_enabled.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Fri Mar 16 15:11:08 CET 2018
From: Adiel Aloni adiel.aloni@intel.com Date: Fri, 1 Dec 2017 13:50:53 +0200 Subject: mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
From: Adiel Aloni adiel.aloni@intel.com
[ Upstream commit e16ea4bb516bc21ea2202f2107718b29218bea59 ]
Enforce using PS_MANUAL_POLL in ps hwsim debugfs to trigger a poll, only if PS_ENABLED was set before. This is required due to commit c9491367b759 ("mac80211: always update the PM state of a peer on MGMT / DATA frames") that enforces the ap to check only mgmt/data frames ps bit, and then update station's power save accordingly. When sending only ps-poll (control frame) the ap will not be aware that the station entered power save. Setting ps enable before triggering ps_poll, will send NDP with PM bit enabled first.
Signed-off-by: Adiel Aloni adiel.aloni@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/mac80211_hwsim.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)
--- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -729,16 +729,21 @@ static int hwsim_fops_ps_write(void *dat val != PS_MANUAL_POLL) return -EINVAL;
- old_ps = data->ps; - data->ps = val; - - local_bh_disable(); if (val == PS_MANUAL_POLL) { + if (data->ps != PS_ENABLED) + return -EINVAL; + local_bh_disable(); ieee80211_iterate_active_interfaces_atomic( data->hw, IEEE80211_IFACE_ITER_NORMAL, hwsim_send_ps_poll, data); - data->ps_poll_pending = true; - } else if (old_ps == PS_DISABLED && val != PS_DISABLED) { + local_bh_enable(); + return 0; + } + old_ps = data->ps; + data->ps = val; + + local_bh_disable(); + if (old_ps == PS_DISABLED && val != PS_DISABLED) { ieee80211_iterate_active_interfaces_atomic( data->hw, IEEE80211_IFACE_ITER_NORMAL, hwsim_send_nullfunc_ps, data);
Patches currently in stable-queue which might be from adiel.aloni@intel.com are
queue-4.15/mac80211_hwsim-enforce-ps_manual_poll-to-be-set-after-ps_enabled.patch