diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2024-01-29 19:34:40 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-02-08 13:07:34 +0100 |
| commit | 6092077ad09ce880c61735c314060f0bd79ae4aa (patch) | |
| tree | 1ca0965019a3e663e441c62685402d84a9767ba5 /net/mac80211/rate.c | |
| parent | 9bf7079bc2271321fac467cae981c44e495b76b9 (diff) | |
wifi: mac80211: introduce 'channel request'
For channel contexts, mac80211 currently uses the cfg80211
chandef struct (control channel, center freq(s), width) to
define towards drivers and internally how these behave. In
fact, there are _two_ such structs used, where the min_def
can reduce bandwidth according to the stations connected.
Unfortunately, with EHT this is longer be sufficient, at
least not for all hardware. EHT requires that non-AP STAs
that are connected to an AP with a lower bandwidth than it
(the AP) advertises (e.g. 160 MHz STA connected to 320 MHz
AP) still be able to receive downlink OFDMA and respond to
trigger frames for uplink OFDMA that specify the position
and bandwidth for the non-AP STA relative to the channel
the AP is using. Therefore, they need to be aware of this,
and at least for some hardware (e.g. Intel) this awareness
is in the hardware. As a result, use of the "same" channel
may need to be split over two channel contexts where they
differ by the AP being used.
As a first step, introduce a concept of a channel request
('chanreq') for each interface, to control the context it
requests. This step does nothing but reorganise the code,
so that later the AP's chandef can be added to the request
in order to handle the EHT case described above.
Link: https://msgid.link/20240129194108.2e88e48bd2e9.I4256183debe975c5ed71621611206fdbb69ba330@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rate.c')
| -rw-r--r-- | net/mac80211/rate.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index d5ea5f5bcf3a..34e03b9522c8 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -4,7 +4,7 @@ * Copyright 2005-2006, Devicescape Software, Inc. * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> * Copyright 2017 Intel Deutschland GmbH - * Copyright (C) 2022 Intel Corporation + * Copyright (C) 2019, 2022-2024 Intel Corporation */ #include <linux/kernel.h> @@ -278,10 +278,10 @@ void ieee80211_check_rate_mask(struct ieee80211_link_data *link) u32 user_mask, basic_rates = link->conf->basic_rates; enum nl80211_band band; - if (WARN_ON(!link->conf->chandef.chan)) + if (WARN_ON(!link->conf->chanreq.oper.chan)) return; - band = link->conf->chandef.chan->band; + band = link->conf->chanreq.oper.chan->band; if (band == NL80211_BAND_S1GHZ) { /* TODO */ return; @@ -761,7 +761,7 @@ static bool rate_control_cap_mask(struct ieee80211_sub_if_data *sdata, u32 i, flags; *mask = sdata->rc_rateidx_mask[sband->band]; - flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); + flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chanreq.oper); for (i = 0; i < sband->n_bitrates; i++) { if ((flags & sband->bitrates[i].flags) != flags) *mask &= ~BIT(i); @@ -817,7 +817,7 @@ rate_control_apply_mask_ratetbl(struct sta_info *sta, mcs_mask, vht_mask)) return; - chan_width = sta->sdata->vif.bss_conf.chandef.width; + chan_width = sta->sdata->vif.bss_conf.chanreq.oper.width; for (i = 0; i < IEEE80211_TX_RATE_TABLE_SIZE; i++) { if (rates->rate[i].idx < 0) break; @@ -854,7 +854,7 @@ static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata, * included in the configured mask and change the rate indexes * if needed. */ - chan_width = sdata->vif.bss_conf.chandef.width; + chan_width = sdata->vif.bss_conf.chanreq.oper.width; for (i = 0; i < max_rates; i++) { /* Skip invalid rates */ if (rates[i].idx < 0) |