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4d3acf4311
We now hold the wiphy mutex everywhere that we use or needed the sta_mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
197 lines
5.6 KiB
C
197 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* S1G handling
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* Copyright(c) 2020 Adapt-IP
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* Copyright (C) 2023 Intel Corporation
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*/
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#include <linux/ieee80211.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "driver-ops.h"
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void ieee80211_s1g_sta_rate_init(struct sta_info *sta)
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{
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/* avoid indicating legacy bitrates for S1G STAs */
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sta->deflink.tx_stats.last_rate.flags |= IEEE80211_TX_RC_S1G_MCS;
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sta->deflink.rx_stats.last_rate =
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STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_S1G);
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}
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bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
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if (likely(!ieee80211_is_action(mgmt->frame_control)))
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return false;
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if (likely(mgmt->u.action.category != WLAN_CATEGORY_S1G))
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return false;
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return mgmt->u.action.u.s1g.action_code == WLAN_S1G_TWT_SETUP;
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}
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static void
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ieee80211_s1g_send_twt_setup(struct ieee80211_sub_if_data *sdata, const u8 *da,
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const u8 *bssid, struct ieee80211_twt_setup *twt)
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{
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int len = IEEE80211_MIN_ACTION_SIZE + 4 + twt->length;
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_mgmt *mgmt;
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struct sk_buff *skb;
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skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
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if (!skb)
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return;
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skb_reserve(skb, local->hw.extra_tx_headroom);
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mgmt = skb_put_zero(skb, len);
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mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
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IEEE80211_STYPE_ACTION);
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memcpy(mgmt->da, da, ETH_ALEN);
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memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
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memcpy(mgmt->bssid, bssid, ETH_ALEN);
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mgmt->u.action.category = WLAN_CATEGORY_S1G;
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mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_SETUP;
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memcpy(mgmt->u.action.u.s1g.variable, twt, 3 + twt->length);
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IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
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IEEE80211_TX_INTFL_MLME_CONN_TX |
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IEEE80211_TX_CTL_REQ_TX_STATUS;
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ieee80211_tx_skb(sdata, skb);
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}
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static void
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ieee80211_s1g_send_twt_teardown(struct ieee80211_sub_if_data *sdata,
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const u8 *da, const u8 *bssid, u8 flowid)
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{
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_mgmt *mgmt;
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struct sk_buff *skb;
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u8 *id;
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skb = dev_alloc_skb(local->hw.extra_tx_headroom +
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IEEE80211_MIN_ACTION_SIZE + 2);
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if (!skb)
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return;
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skb_reserve(skb, local->hw.extra_tx_headroom);
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mgmt = skb_put_zero(skb, IEEE80211_MIN_ACTION_SIZE + 2);
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mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
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IEEE80211_STYPE_ACTION);
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memcpy(mgmt->da, da, ETH_ALEN);
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memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
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memcpy(mgmt->bssid, bssid, ETH_ALEN);
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mgmt->u.action.category = WLAN_CATEGORY_S1G;
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mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_TEARDOWN;
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id = (u8 *)mgmt->u.action.u.s1g.variable;
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*id = flowid;
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IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
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IEEE80211_TX_CTL_REQ_TX_STATUS;
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ieee80211_tx_skb(sdata, skb);
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}
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static void
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ieee80211_s1g_rx_twt_setup(struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta, struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (void *)skb->data;
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struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
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struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
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twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST);
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/* broadcast TWT not supported yet */
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if (twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST) {
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twt_agrt->req_type &=
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~cpu_to_le16(IEEE80211_TWT_REQTYPE_SETUP_CMD);
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twt_agrt->req_type |=
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le16_encode_bits(TWT_SETUP_CMD_REJECT,
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IEEE80211_TWT_REQTYPE_SETUP_CMD);
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goto out;
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}
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/* TWT Information not supported yet */
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twt->control |= IEEE80211_TWT_CONTROL_RX_DISABLED;
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drv_add_twt_setup(sdata->local, sdata, &sta->sta, twt);
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out:
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ieee80211_s1g_send_twt_setup(sdata, mgmt->sa, sdata->vif.addr, twt);
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}
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static void
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ieee80211_s1g_rx_twt_teardown(struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta, struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
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drv_twt_teardown_request(sdata->local, sdata, &sta->sta,
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mgmt->u.action.u.s1g.variable[0]);
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}
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static void
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ieee80211_s1g_tx_twt_setup_fail(struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta, struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
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struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
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struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
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u8 flowid = le16_get_bits(twt_agrt->req_type,
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IEEE80211_TWT_REQTYPE_FLOWID);
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drv_twt_teardown_request(sdata->local, sdata, &sta->sta, flowid);
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ieee80211_s1g_send_twt_teardown(sdata, mgmt->sa, sdata->vif.addr,
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flowid);
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}
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void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
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struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
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struct ieee80211_local *local = sdata->local;
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struct sta_info *sta;
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lockdep_assert_wiphy(local->hw.wiphy);
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sta = sta_info_get_bss(sdata, mgmt->sa);
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if (!sta)
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return;
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switch (mgmt->u.action.u.s1g.action_code) {
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case WLAN_S1G_TWT_SETUP:
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ieee80211_s1g_rx_twt_setup(sdata, sta, skb);
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break;
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case WLAN_S1G_TWT_TEARDOWN:
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ieee80211_s1g_rx_twt_teardown(sdata, sta, skb);
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break;
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default:
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break;
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}
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}
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void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
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struct sk_buff *skb)
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{
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
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struct ieee80211_local *local = sdata->local;
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struct sta_info *sta;
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lockdep_assert_wiphy(local->hw.wiphy);
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sta = sta_info_get_bss(sdata, mgmt->da);
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if (!sta)
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return;
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switch (mgmt->u.action.u.s1g.action_code) {
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case WLAN_S1G_TWT_SETUP:
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/* process failed twt setup frames */
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ieee80211_s1g_tx_twt_setup_fail(sdata, sta, skb);
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break;
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default:
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break;
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}
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}
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