mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
18fe0fae61
If the driver uses .sta_add, station entries are only uploaded after the sta is in assoc state. Fix early station rate table updates by deferring them until the sta has been uploaded. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20210201083324.3134-1-nbd@nbd.name [use rcu_access_pointer() instead since we won't dereference here] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
347 lines
8.0 KiB
C
347 lines
8.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2015 Intel Deutschland GmbH
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*/
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "trace.h"
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#include "driver-ops.h"
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int drv_start(struct ieee80211_local *local)
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{
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int ret;
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might_sleep();
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if (WARN_ON(local->started))
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return -EALREADY;
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trace_drv_start(local);
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local->started = true;
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/* allow rx frames */
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smp_mb();
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ret = local->ops->start(&local->hw);
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trace_drv_return_int(local, ret);
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if (ret)
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local->started = false;
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return ret;
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}
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void drv_stop(struct ieee80211_local *local)
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{
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might_sleep();
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if (WARN_ON(!local->started))
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return;
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trace_drv_stop(local);
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local->ops->stop(&local->hw);
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trace_drv_return_void(local);
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/* sync away all work on the tasklet before clearing started */
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tasklet_disable(&local->tasklet);
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tasklet_enable(&local->tasklet);
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barrier();
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local->started = false;
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}
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int drv_add_interface(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata)
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{
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int ret;
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might_sleep();
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if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
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(sdata->vif.type == NL80211_IFTYPE_MONITOR &&
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!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
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!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
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return -EINVAL;
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trace_drv_add_interface(local, sdata);
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ret = local->ops->add_interface(&local->hw, &sdata->vif);
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trace_drv_return_int(local, ret);
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if (ret == 0)
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sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
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return ret;
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}
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int drv_change_interface(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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enum nl80211_iftype type, bool p2p)
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{
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int ret;
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return -EIO;
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trace_drv_change_interface(local, sdata, type, p2p);
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ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
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trace_drv_return_int(local, ret);
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return ret;
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}
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void drv_remove_interface(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata)
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{
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return;
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trace_drv_remove_interface(local, sdata);
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local->ops->remove_interface(&local->hw, &sdata->vif);
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sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
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trace_drv_return_void(local);
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}
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__must_check
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int drv_sta_state(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta,
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enum ieee80211_sta_state old_state,
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enum ieee80211_sta_state new_state)
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{
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int ret = 0;
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might_sleep();
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sdata = get_bss_sdata(sdata);
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if (!check_sdata_in_driver(sdata))
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return -EIO;
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trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
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if (local->ops->sta_state) {
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ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
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old_state, new_state);
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} else if (old_state == IEEE80211_STA_AUTH &&
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new_state == IEEE80211_STA_ASSOC) {
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ret = drv_sta_add(local, sdata, &sta->sta);
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if (ret == 0) {
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sta->uploaded = true;
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if (rcu_access_pointer(sta->sta.rates))
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drv_sta_rate_tbl_update(local, sdata, &sta->sta);
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}
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} else if (old_state == IEEE80211_STA_ASSOC &&
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new_state == IEEE80211_STA_AUTH) {
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drv_sta_remove(local, sdata, &sta->sta);
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}
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trace_drv_return_int(local, ret);
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return ret;
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}
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__must_check
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int drv_sta_set_txpwr(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta)
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{
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int ret = -EOPNOTSUPP;
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might_sleep();
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sdata = get_bss_sdata(sdata);
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if (!check_sdata_in_driver(sdata))
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return -EIO;
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trace_drv_sta_set_txpwr(local, sdata, &sta->sta);
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if (local->ops->sta_set_txpwr)
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ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
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&sta->sta);
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trace_drv_return_int(local, ret);
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return ret;
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}
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void drv_sta_rc_update(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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struct ieee80211_sta *sta, u32 changed)
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{
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sdata = get_bss_sdata(sdata);
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if (!check_sdata_in_driver(sdata))
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return;
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WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
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(sdata->vif.type != NL80211_IFTYPE_ADHOC &&
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sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
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trace_drv_sta_rc_update(local, sdata, sta, changed);
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if (local->ops->sta_rc_update)
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local->ops->sta_rc_update(&local->hw, &sdata->vif,
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sta, changed);
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trace_drv_return_void(local);
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}
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int drv_conf_tx(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata, u16 ac,
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const struct ieee80211_tx_queue_params *params)
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{
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int ret = -EOPNOTSUPP;
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return -EIO;
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if (params->cw_min == 0 || params->cw_min > params->cw_max) {
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/*
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* If we can't configure hardware anyway, don't warn. We may
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* never have initialized the CW parameters.
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*/
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WARN_ONCE(local->ops->conf_tx,
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"%s: invalid CW_min/CW_max: %d/%d\n",
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sdata->name, params->cw_min, params->cw_max);
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return -EINVAL;
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}
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trace_drv_conf_tx(local, sdata, ac, params);
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if (local->ops->conf_tx)
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ret = local->ops->conf_tx(&local->hw, &sdata->vif,
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ac, params);
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trace_drv_return_int(local, ret);
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return ret;
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}
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u64 drv_get_tsf(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata)
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{
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u64 ret = -1ULL;
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return ret;
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trace_drv_get_tsf(local, sdata);
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if (local->ops->get_tsf)
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ret = local->ops->get_tsf(&local->hw, &sdata->vif);
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trace_drv_return_u64(local, ret);
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return ret;
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}
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void drv_set_tsf(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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u64 tsf)
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{
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return;
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trace_drv_set_tsf(local, sdata, tsf);
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if (local->ops->set_tsf)
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local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
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trace_drv_return_void(local);
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}
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void drv_offset_tsf(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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s64 offset)
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{
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return;
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trace_drv_offset_tsf(local, sdata, offset);
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if (local->ops->offset_tsf)
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local->ops->offset_tsf(&local->hw, &sdata->vif, offset);
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trace_drv_return_void(local);
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}
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void drv_reset_tsf(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata)
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{
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might_sleep();
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if (!check_sdata_in_driver(sdata))
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return;
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trace_drv_reset_tsf(local, sdata);
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if (local->ops->reset_tsf)
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local->ops->reset_tsf(&local->hw, &sdata->vif);
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trace_drv_return_void(local);
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}
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int drv_switch_vif_chanctx(struct ieee80211_local *local,
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struct ieee80211_vif_chanctx_switch *vifs,
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int n_vifs, enum ieee80211_chanctx_switch_mode mode)
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{
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int ret = 0;
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int i;
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might_sleep();
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if (!local->ops->switch_vif_chanctx)
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return -EOPNOTSUPP;
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for (i = 0; i < n_vifs; i++) {
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struct ieee80211_chanctx *new_ctx =
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container_of(vifs[i].new_ctx,
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struct ieee80211_chanctx,
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conf);
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struct ieee80211_chanctx *old_ctx =
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container_of(vifs[i].old_ctx,
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struct ieee80211_chanctx,
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conf);
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WARN_ON_ONCE(!old_ctx->driver_present);
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WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
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new_ctx->driver_present) ||
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(mode == CHANCTX_SWMODE_REASSIGN_VIF &&
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!new_ctx->driver_present));
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}
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trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
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ret = local->ops->switch_vif_chanctx(&local->hw,
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vifs, n_vifs, mode);
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trace_drv_return_int(local, ret);
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if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
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for (i = 0; i < n_vifs; i++) {
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struct ieee80211_chanctx *new_ctx =
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container_of(vifs[i].new_ctx,
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struct ieee80211_chanctx,
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conf);
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struct ieee80211_chanctx *old_ctx =
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container_of(vifs[i].old_ctx,
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struct ieee80211_chanctx,
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conf);
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new_ctx->driver_present = true;
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old_ctx->driver_present = false;
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}
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}
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return ret;
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}
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int drv_ampdu_action(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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struct ieee80211_ampdu_params *params)
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{
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int ret = -EOPNOTSUPP;
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might_sleep();
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sdata = get_bss_sdata(sdata);
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if (!check_sdata_in_driver(sdata))
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return -EIO;
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trace_drv_ampdu_action(local, sdata, params);
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if (local->ops->ampdu_action)
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ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params);
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trace_drv_return_int(local, ret);
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return ret;
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}
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