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author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2017-02-20 13:24:36 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-21 15:21:34 (GMT) |
commit | c1bc62d729f46be9dae02a68a7e7b867cb8af25f (patch) | |
tree | 236454da678be1c5679fc4231bb86d78bb81498e /drivers | |
parent | fff654b43e12d41db0a0918ac08ddd2e76bf1579 (diff) | |
download | linux-c1bc62d729f46be9dae02a68a7e7b867cb8af25f.tar.xz |
mac80211: fix power saving clients handling in iwlwifi
[ Upstream commit d98937f4ea713d21e0fcc345919f86c877dd8d6f ]
iwlwifi now supports RSS and can't let mac80211 track the
PS state based on the Rx frames since they can come out of
order. iwlwifi is now advertising AP_LINK_PS, and uses
explicit notifications to teach mac80211 about the PS state
of the stations and the PS poll / uAPSD trigger frames
coming our way from the peers.
Because of that, the TIM stopped being maintained in
mac80211. I tried to fix this in commit c68df2e7be0c
("mac80211: allow using AP_LINK_PS with mac80211-generated TIM IE")
but that was later reverted by Felix in commit 6c18a6b4e799
("Revert "mac80211: allow using AP_LINK_PS with mac80211-generated TIM IE")
since it broke drivers that do not implement set_tim.
Since none of the drivers that set AP_LINK_PS have the
set_tim() handler set besides iwlwifi, I can bail out in
__sta_info_recalc_tim if AP_LINK_PS AND .set_tim is not
implemented.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions