2021-09-03 12:07:27

by Wen Gong

[permalink] [raw]
Subject: [PATCH v3 9/9] mac80211: save transmit power envelope element and power constraint

This is to save the transmit power envelope element and power
constraint in struct ieee80211_bss_conf for 6 GHz. Lower driver
will use this info to calculate the power limit.

Signed-off-by: Wen Gong <[email protected]>
---
include/net/mac80211.h | 6 ++++++
net/mac80211/mlme.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index d0522d7f3351..0ac6fe7b8f99 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -632,6 +632,9 @@ struct ieee80211_fils_discovery {
* @beacon_tx_rate: The configured beacon transmit rate that needs to be passed
* to driver when rate control is offloaded to firmware.
* @power_type: power type of BSS for 6 GHz
+ * @tx_pwr_env: transmit power envelope array of BSS.
+ * @tx_pwr_env_num: number of @tx_pwr_env.
+ * @pwr_reduction: power constraint of BSS.
*/
struct ieee80211_bss_conf {
const u8 *bssid;
@@ -702,6 +705,9 @@ struct ieee80211_bss_conf {
bool s1g;
struct cfg80211_bitrate_mask beacon_tx_rate;
enum ieee80211_ap_reg_power power_type;
+ struct ieee80211_tx_pwr_env tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
+ u8 tx_pwr_env_num;
+ u8 pwr_reduction;
};

/**
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6b32cdd590cd..cda28ec58a31 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2340,6 +2340,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss_conf *bss_conf;
u32 changed = 0;

sdata_assert_lock(sdata);
@@ -2483,6 +2484,11 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);

sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
+
+ bss_conf = &sdata->vif.bss_conf;
+ bss_conf->pwr_reduction = 0;
+ bss_conf->tx_pwr_env_num = 0;
+ memset(bss_conf->tx_pwr_env, 0, sizeof(bss_conf->tx_pwr_env));
}

static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
@@ -5087,6 +5093,30 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
else
he_oper = NULL;

+ if (is_6ghz) {
+ struct ieee80211_bss_conf *bss_conf;
+ u8 i, j = 0;
+
+ bss_conf = &sdata->vif.bss_conf;
+
+ if (elems->pwr_constr_elem)
+ bss_conf->pwr_reduction = *elems->pwr_constr_elem;
+
+ BUILD_BUG_ON(ARRAY_SIZE(bss_conf->tx_pwr_env) !=
+ ARRAY_SIZE(elems->tx_pwr_env));
+
+ for (i = 0; i < elems->tx_pwr_env_num; i++) {
+ if (elems->tx_pwr_env_len[i] >
+ sizeof(bss_conf->tx_pwr_env[j]))
+ continue;
+
+ bss_conf->tx_pwr_env_num++;
+ memcpy(&bss_conf->tx_pwr_env[j], elems->tx_pwr_env[i],
+ elems->tx_pwr_env_len[i]);
+ j++;
+ }
+ }
+
if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
}
--
2.31.1