[PATCH 6.4 172/800] wifi: mac80211: add helpers to access sband iftype data

Greg Kroah-Hartman
2023-07-16T20:00:53Z

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 1ec7291e247055fab3a088e1a333a31e7c06e2dd ]

There's quite a bit of code accessing sband iftype data
(HE, HE 6 GHz, EHT) and we always need to remember to use
the ieee80211_vif_type_p2p() helper. Add new helpers to
directly get it from the sband/vif rather than having to
call ieee80211_vif_type_p2p().

Convert most code with the following spatch:

@@
expression vif, sband;
@@
-ieee80211_get_he_iftype_cap(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_he_iftype_cap_vif(sband, vif)

@@
expression vif, sband;
@@
-ieee80211_get_eht_iftype_cap(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_eht_iftype_cap_vif(sband, vif)

@@
expression vif, sband;
@@
-ieee80211_get_he_6ghz_capa(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_he_6ghz_capa_vif(sband, vif)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.db099f49e764.Ie892966c49e22c7b7ee1073bc684f142debfdc84@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: f91295987576 ("wifi: iwlwifi: mvm: correctly access HE/EHT sband capa")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/wireless/intel/iwlwifi/mvm/mac80211.c | 6 +--
drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 5 +--
.../net/wireless/intel/iwlwifi/mvm/rs-fw.c | 5 +--
include/net/mac80211.h | 44 ++++++++++++++++++-
net/mac80211/eht.c | 5 +--
net/mac80211/he.c | 3 +-
net/mac80211/mlme.c | 30 +++++--------
net/mac80211/util.c | 11 ++---
8 files changed, 66 insertions(+), 43 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 17f788a5ff6ba..6c70ca1b524c4 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -2285,8 +2285,7 @@ bool iwl_mvm_is_nic_ack_enabled(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
* so take it from one of them.
*/
sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ];
- own_he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(vif));
+ own_he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);

return (own_he_cap && (own_he_cap->he_cap_elem.mac_cap_info[2] &
IEEE80211_HE_MAC_CAP2_ACK_EN));
@@ -3468,8 +3467,7 @@ static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm,

sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;

- he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);

if (he_cap) {
/* we know that ours is writable */
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index 32625bfacaaef..6ba4ad6b1380b 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2016-2017 Intel Deutschland GmbH
*/
@@ -192,8 +192,7 @@ static void iwl_mvm_rx_monitor_notif(struct iwl_mvm *mvm,
WARN_ON(!(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40));
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;

- he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);

if (he_cap) {
/* we know that ours is writable */
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
index c3a00bfbeef2c..f72d1ca3cfedc 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2022 Intel Corporation
+ * Copyright (C) 2018-2023 Intel Corporation
*/
#include "rs.h"
#include "fw-api.h"
@@ -94,8 +94,7 @@ static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;

- sband_he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(vif));
+ sband_he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);
if (sband_he_cap &&
!(sband_he_cap->he_cap_elem.phy_cap_info[1] &
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ac0370e768749..65510cfda37af 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -7,7 +7,7 @@
* Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2015 - 2017 Intel Deutschland GmbH
- * Copyright (C) 2018 - 2022 Intel Corporation
+ * Copyright (C) 2018 - 2023 Intel Corporation
*/

#ifndef MAC80211_H
@@ -6861,6 +6861,48 @@ ieee80211_vif_type_p2p(struct ieee80211_vif *vif)
return ieee80211_iftype_p2p(vif->type, vif->p2p);
}

+/**
+ * ieee80211_get_he_iftype_cap_vif - return HE capabilities for sband/vif
+ * @sband: the sband to search for the iftype on
+ * @vif: the vif to get the iftype from
+ *
+ * Return: pointer to the struct ieee80211_sta_he_cap, or %NULL is none found
+ */
+static inline const struct ieee80211_sta_he_cap *
+ieee80211_get_he_iftype_cap_vif(const struct ieee80211_supported_band *sband,
+ struct ieee80211_vif *vif)
+{
+ return ieee80211_get_he_iftype_cap(sband, ieee80211_vif_type_p2p(vif));
+}
+
+/**
+ * ieee80211_get_he_6ghz_capa_vif - return HE 6 GHz capabilities
+ * @sband: the sband to search for the STA on
+ * @vif: the vif to get the iftype from
+ *
+ * Return: the 6GHz capabilities
+ */
+static inline __le16
+ieee80211_get_he_6ghz_capa_vif(const struct ieee80211_supported_band *sband,
+ struct ieee80211_vif *vif)
+{
+ return ieee80211_get_he_6ghz_capa(sband, ieee80211_vif_type_p2p(vif));
+}
+
+/**
+ * ieee80211_get_eht_iftype_cap_vif - return ETH capabilities for sband/vif
+ * @sband: the sband to search for the iftype on
+ * @vif: the vif to get the iftype from
+ *
+ * Return: pointer to the struct ieee80211_sta_eht_cap, or %NULL is none found
+ */
+static inline const struct ieee80211_sta_eht_cap *
+ieee80211_get_eht_iftype_cap_vif(const struct ieee80211_supported_band *sband,
+ struct ieee80211_vif *vif)
+{
+ return ieee80211_get_eht_iftype_cap(sband, ieee80211_vif_type_p2p(vif));
+}
+
/**
* ieee80211_update_mu_groups - set the VHT MU-MIMO groud data
*
diff --git a/net/mac80211/eht.c b/net/mac80211/eht.c
index 18bc6b78b2679..ddc7acc68335a 100644
--- a/net/mac80211/eht.c
+++ b/net/mac80211/eht.c
@@ -2,7 +2,7 @@
/*
* EHT handling
*
- * Copyright(c) 2021-2022 Intel Corporation
+ * Copyright(c) 2021-2023 Intel Corporation
*/

#include "ieee80211_i.h"
@@ -25,8 +25,7 @@ ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
memset(eht_cap, 0, sizeof(*eht_cap));

if (!eht_cap_ie_elem ||
- !ieee80211_get_eht_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif)))
+ !ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif))
return;

mcs_nss_size = ieee80211_eht_mcs_nss_size(he_cap_ie_elem,
diff --git a/net/mac80211/he.c b/net/mac80211/he.c
index 0322abae08250..9f5ffdc9db284 100644
--- a/net/mac80211/he.c
+++ b/net/mac80211/he.c
@@ -128,8 +128,7 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
return;

own_he_cap_ptr =
- ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
if (!own_he_cap_ptr)
return;

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5a4303130ef22..93da8373583be 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -511,16 +511,14 @@ static int ieee80211_config_bw(struct ieee80211_link_data *link,

/* don't check HE if we associated as non-HE station */
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE ||
- !ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif))) {
+ !ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif)) {
he_oper = NULL;
eht_oper = NULL;
}

/* don't check EHT if we associated as non-EHT station */
if (link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_EHT ||
- !ieee80211_get_eht_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif)))
+ !ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif))
eht_oper = NULL;

/*
@@ -776,8 +774,7 @@ static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
const struct ieee80211_sta_he_cap *he_cap;
u8 he_cap_size;

- he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
if (WARN_ON(!he_cap))
return;

@@ -806,10 +803,8 @@ static void ieee80211_add_eht_ie(struct ieee80211_sub_if_data *sdata,
const struct ieee80211_sta_eht_cap *eht_cap;
u8 eht_cap_size;

- he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
- eht_cap = ieee80211_get_eht_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
+ eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);

/*
* EHT capabilities element is only added if the HE capabilities element
@@ -3949,8 +3944,7 @@ static bool ieee80211_twt_req_supported(struct ieee80211_sub_if_data *sdata,
const struct ieee802_11_elems *elems)
{
const struct ieee80211_sta_he_cap *own_he_cap =
- ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);

if (elems->ext_capab_len < 10)
return false;
@@ -3986,8 +3980,7 @@ static bool ieee80211_twt_bcast_support(struct ieee80211_sub_if_data *sdata,
struct link_sta_info *link_sta)
{
const struct ieee80211_sta_he_cap *own_he_cap =
- ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);

return bss_conf->he_support &&
(link_sta->pub->he_cap.he_cap_elem.mac_cap_info[2] &
@@ -4624,8 +4617,7 @@ ieee80211_verify_sta_he_mcs_support(struct ieee80211_sub_if_data *sdata,
const struct ieee80211_he_operation *he_op)
{
const struct ieee80211_sta_he_cap *sta_he_cap =
- ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
u16 ap_min_req_set;
int i;

@@ -4759,15 +4751,13 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
}

- if (!ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif))) {
+ if (!ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif)) {
mlme_dbg(sdata, "HE not supported, disabling HE and EHT\n");
*conn_flags |= IEEE80211_CONN_DISABLE_HE;
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
}

- if (!ieee80211_get_eht_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif))) {
+ if (!ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif)) {
mlme_dbg(sdata, "EHT not supported, disabling EHT\n");
*conn_flags |= IEEE80211_CONN_DISABLE_EHT;
}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3bd07a0a782f7..74bcc9590c759 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -6,7 +6,7 @@
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2022 Intel Corporation
+ * Copyright (C) 2018-2023 Intel Corporation
*
* utilities for mac80211
*/
@@ -2121,8 +2121,7 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
*offset = noffset;
}

- he_cap = ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
if (he_cap &&
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
IEEE80211_CHAN_NO_HE)) {
@@ -2131,8 +2130,7 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
goto out_err;
}

- eht_cap = ieee80211_get_eht_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
+ eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);

if (eht_cap &&
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
@@ -2150,8 +2148,7 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband6;

sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
- he_cap = ieee80211_get_he_iftype_cap(sband6,
- ieee80211_vif_type_p2p(&sdata->vif));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband6, &sdata->vif);

if (he_cap) {
enum nl80211_iftype iftype =
--
2.39.2