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mac80211: reorganize code to remove a forward declaration
Remove the newly added ieee80211_set_vif_encap_ops declaration. No further code changes. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-15-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau
Johannes Berg
parent
f02dff93e2
commit
4b7afb52c8
@ -43,7 +43,6 @@
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*/
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static void ieee80211_iface_work(struct work_struct *work);
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static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata);
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bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata)
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{
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@ -349,6 +348,452 @@ static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata,
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return 0;
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}
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static int ieee80211_open(struct net_device *dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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int err;
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/* fail early if user set an invalid address */
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if (!is_valid_ether_addr(dev->dev_addr))
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return -EADDRNOTAVAIL;
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err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type);
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if (err)
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return err;
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return ieee80211_do_open(&sdata->wdev, true);
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}
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static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
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bool going_down)
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{
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struct ieee80211_local *local = sdata->local;
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unsigned long flags;
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struct sk_buff *skb, *tmp;
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u32 hw_reconf_flags = 0;
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int i, flushed;
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struct ps_data *ps;
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struct cfg80211_chan_def chandef;
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bool cancel_scan;
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struct cfg80211_nan_func *func;
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clear_bit(SDATA_STATE_RUNNING, &sdata->state);
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cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata;
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if (cancel_scan)
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ieee80211_scan_cancel(local);
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/*
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* Stop TX on this interface first.
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*/
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if (sdata->dev)
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netif_tx_stop_all_queues(sdata->dev);
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ieee80211_roc_purge(local, sdata);
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_STATION:
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ieee80211_mgd_stop(sdata);
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break;
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case NL80211_IFTYPE_ADHOC:
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ieee80211_ibss_stop(sdata);
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break;
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case NL80211_IFTYPE_MONITOR:
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if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES)
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break;
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list_del_rcu(&sdata->u.mntr.list);
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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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* Remove all stations associated with this interface.
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*
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* This must be done before calling ops->remove_interface()
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* because otherwise we can later invoke ops->sta_notify()
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* whenever the STAs are removed, and that invalidates driver
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* assumptions about always getting a vif pointer that is valid
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* (because if we remove a STA after ops->remove_interface()
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* the driver will have removed the vif info already!)
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*
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* In WDS mode a station must exist here and be flushed, for
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* AP_VLANs stations may exist since there's nothing else that
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* would have removed them, but in other modes there shouldn't
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* be any stations.
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*/
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flushed = sta_info_flush(sdata);
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WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
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((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) ||
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(sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)));
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/* don't count this interface for allmulti while it is down */
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if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
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atomic_dec(&local->iff_allmultis);
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if (sdata->vif.type == NL80211_IFTYPE_AP) {
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local->fif_pspoll--;
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local->fif_probe_req--;
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} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
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local->fif_probe_req--;
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}
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if (sdata->dev) {
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netif_addr_lock_bh(sdata->dev);
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spin_lock_bh(&local->filter_lock);
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__hw_addr_unsync(&local->mc_list, &sdata->dev->mc,
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sdata->dev->addr_len);
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spin_unlock_bh(&local->filter_lock);
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netif_addr_unlock_bh(sdata->dev);
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}
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del_timer_sync(&local->dynamic_ps_timer);
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cancel_work_sync(&local->dynamic_ps_enable_work);
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cancel_work_sync(&sdata->recalc_smps);
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sdata_lock(sdata);
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mutex_lock(&local->mtx);
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sdata->vif.csa_active = false;
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if (sdata->vif.type == NL80211_IFTYPE_STATION)
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sdata->u.mgd.csa_waiting_bcn = false;
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if (sdata->csa_block_tx) {
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ieee80211_wake_vif_queues(local, sdata,
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IEEE80211_QUEUE_STOP_REASON_CSA);
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sdata->csa_block_tx = false;
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}
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mutex_unlock(&local->mtx);
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sdata_unlock(sdata);
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cancel_work_sync(&sdata->csa_finalize_work);
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cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
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if (sdata->wdev.cac_started) {
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chandef = sdata->vif.bss_conf.chandef;
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WARN_ON(local->suspended);
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mutex_lock(&local->mtx);
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ieee80211_vif_release_channel(sdata);
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mutex_unlock(&local->mtx);
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cfg80211_cac_event(sdata->dev, &chandef,
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NL80211_RADAR_CAC_ABORTED,
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GFP_KERNEL);
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}
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/* APs need special treatment */
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if (sdata->vif.type == NL80211_IFTYPE_AP) {
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struct ieee80211_sub_if_data *vlan, *tmpsdata;
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/* down all dependent devices, that is VLANs */
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list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
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u.vlan.list)
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dev_close(vlan->dev);
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WARN_ON(!list_empty(&sdata->u.ap.vlans));
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} else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
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/* remove all packets in parent bc_buf pointing to this dev */
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ps = &sdata->bss->ps;
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spin_lock_irqsave(&ps->bc_buf.lock, flags);
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skb_queue_walk_safe(&ps->bc_buf, skb, tmp) {
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if (skb->dev == sdata->dev) {
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__skb_unlink(skb, &ps->bc_buf);
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local->total_ps_buffered--;
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ieee80211_free_txskb(&local->hw, skb);
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}
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}
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spin_unlock_irqrestore(&ps->bc_buf.lock, flags);
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}
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if (going_down)
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local->open_count--;
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_AP_VLAN:
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mutex_lock(&local->mtx);
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list_del(&sdata->u.vlan.list);
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mutex_unlock(&local->mtx);
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RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL);
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/* see comment in the default case below */
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ieee80211_free_keys(sdata, true);
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/* no need to tell driver */
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break;
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case NL80211_IFTYPE_MONITOR:
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if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) {
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local->cooked_mntrs--;
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break;
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}
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local->monitors--;
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if (local->monitors == 0) {
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local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR;
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hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
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}
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ieee80211_adjust_monitor_flags(sdata, -1);
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break;
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case NL80211_IFTYPE_NAN:
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/* clean all the functions */
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spin_lock_bh(&sdata->u.nan.func_lock);
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idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) {
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idr_remove(&sdata->u.nan.function_inst_ids, i);
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cfg80211_free_nan_func(func);
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}
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idr_destroy(&sdata->u.nan.function_inst_ids);
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spin_unlock_bh(&sdata->u.nan.func_lock);
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break;
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case NL80211_IFTYPE_P2P_DEVICE:
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/* relies on synchronize_rcu() below */
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RCU_INIT_POINTER(local->p2p_sdata, NULL);
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fallthrough;
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default:
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cancel_work_sync(&sdata->work);
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/*
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* When we get here, the interface is marked down.
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* Free the remaining keys, if there are any
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* (which can happen in AP mode if userspace sets
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* keys before the interface is operating, and maybe
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* also in WDS mode)
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*
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* Force the key freeing to always synchronize_net()
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* to wait for the RX path in case it is using this
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* interface enqueuing frames at this very time on
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* another CPU.
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*/
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ieee80211_free_keys(sdata, true);
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skb_queue_purge(&sdata->skb_queue);
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}
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spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
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for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
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skb_queue_walk_safe(&local->pending[i], skb, tmp) {
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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if (info->control.vif == &sdata->vif) {
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__skb_unlink(skb, &local->pending[i]);
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ieee80211_free_txskb(&local->hw, skb);
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}
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}
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}
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spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
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if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
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ieee80211_txq_remove_vlan(local, sdata);
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sdata->bss = NULL;
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if (local->open_count == 0)
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ieee80211_clear_tx_pending(local);
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sdata->vif.bss_conf.beacon_int = 0;
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/*
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* If the interface goes down while suspended, presumably because
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* the device was unplugged and that happens before our resume,
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* then the driver is already unconfigured and the remainder of
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* this function isn't needed.
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* XXX: what about WoWLAN? If the device has software state, e.g.
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* memory allocated, it might expect teardown commands from
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* mac80211 here?
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*/
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if (local->suspended) {
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WARN_ON(local->wowlan);
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WARN_ON(rtnl_dereference(local->monitor_sdata));
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return;
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}
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_AP_VLAN:
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break;
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case NL80211_IFTYPE_MONITOR:
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if (local->monitors == 0)
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ieee80211_del_virtual_monitor(local);
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mutex_lock(&local->mtx);
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ieee80211_recalc_idle(local);
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mutex_unlock(&local->mtx);
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if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
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break;
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fallthrough;
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default:
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if (going_down)
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drv_remove_interface(local, sdata);
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}
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ieee80211_recalc_ps(local);
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if (cancel_scan)
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flush_delayed_work(&local->scan_work);
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if (local->open_count == 0) {
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ieee80211_stop_device(local);
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/* no reconfiguring after stop! */
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return;
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}
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/* do after stop to avoid reconfiguring when we stop anyway */
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ieee80211_configure_filter(local);
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ieee80211_hw_config(local, hw_reconf_flags);
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if (local->monitors == local->open_count)
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ieee80211_add_virtual_monitor(local);
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}
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static int ieee80211_stop(struct net_device *dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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ieee80211_do_stop(sdata, true);
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return 0;
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}
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static void ieee80211_set_multicast_list(struct net_device *dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct ieee80211_local *local = sdata->local;
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int allmulti, sdata_allmulti;
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allmulti = !!(dev->flags & IFF_ALLMULTI);
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sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
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if (allmulti != sdata_allmulti) {
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if (dev->flags & IFF_ALLMULTI)
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atomic_inc(&local->iff_allmultis);
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else
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atomic_dec(&local->iff_allmultis);
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sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
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}
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spin_lock_bh(&local->filter_lock);
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__hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len);
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spin_unlock_bh(&local->filter_lock);
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ieee80211_queue_work(&local->hw, &local->reconfig_filter);
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}
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/*
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* Called when the netdev is removed or, by the code below, before
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* the interface type changes.
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*/
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static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata)
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{
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int i;
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/* free extra data */
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ieee80211_free_keys(sdata, false);
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ieee80211_debugfs_remove_netdev(sdata);
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for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
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__skb_queue_purge(&sdata->fragments[i].skb_list);
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sdata->fragment_next = 0;
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if (ieee80211_vif_is_mesh(&sdata->vif))
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ieee80211_mesh_teardown_sdata(sdata);
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}
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static void ieee80211_uninit(struct net_device *dev)
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{
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ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev));
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}
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static u16 ieee80211_netdev_select_queue(struct net_device *dev,
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struct sk_buff *skb,
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struct net_device *sb_dev)
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{
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return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
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}
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static void
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ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
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{
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int i;
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for_each_possible_cpu(i) {
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const struct pcpu_sw_netstats *tstats;
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u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
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unsigned int start;
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tstats = per_cpu_ptr(dev->tstats, i);
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do {
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start = u64_stats_fetch_begin_irq(&tstats->syncp);
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rx_packets = tstats->rx_packets;
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tx_packets = tstats->tx_packets;
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rx_bytes = tstats->rx_bytes;
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tx_bytes = tstats->tx_bytes;
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} while (u64_stats_fetch_retry_irq(&tstats->syncp, start));
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stats->rx_packets += rx_packets;
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stats->tx_packets += tx_packets;
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stats->rx_bytes += rx_bytes;
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stats->tx_bytes += tx_bytes;
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}
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}
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static const struct net_device_ops ieee80211_dataif_ops = {
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.ndo_open = ieee80211_open,
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.ndo_stop = ieee80211_stop,
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.ndo_uninit = ieee80211_uninit,
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.ndo_start_xmit = ieee80211_subif_start_xmit,
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.ndo_set_rx_mode = ieee80211_set_multicast_list,
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.ndo_set_mac_address = ieee80211_change_mac,
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.ndo_select_queue = ieee80211_netdev_select_queue,
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.ndo_get_stats64 = ieee80211_get_stats64,
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};
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static u16 ieee80211_monitor_select_queue(struct net_device *dev,
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struct sk_buff *skb,
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struct net_device *sb_dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr;
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int len_rthdr;
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if (local->hw.queues < IEEE80211_NUM_ACS)
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return 0;
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/* reset flags and info before parsing radiotap header */
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memset(info, 0, sizeof(*info));
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if (!ieee80211_parse_tx_radiotap(skb, dev))
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return 0; /* doesn't matter, frame will be dropped */
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len_rthdr = ieee80211_get_radiotap_len(skb->data);
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hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
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if (skb->len < len_rthdr + 2 ||
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skb->len < len_rthdr + ieee80211_hdrlen(hdr->frame_control))
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return 0; /* doesn't matter, frame will be dropped */
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return ieee80211_select_queue_80211(sdata, skb, hdr);
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}
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static const struct net_device_ops ieee80211_monitorif_ops = {
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.ndo_open = ieee80211_open,
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.ndo_stop = ieee80211_stop,
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.ndo_uninit = ieee80211_uninit,
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.ndo_start_xmit = ieee80211_monitor_start_xmit,
|
||||
.ndo_set_rx_mode = ieee80211_set_multicast_list,
|
||||
.ndo_set_mac_address = ieee80211_change_mac,
|
||||
.ndo_select_queue = ieee80211_monitor_select_queue,
|
||||
.ndo_get_stats64 = ieee80211_get_stats64,
|
||||
};
|
||||
|
||||
static const struct net_device_ops ieee80211_dataif_8023_ops = {
|
||||
.ndo_open = ieee80211_open,
|
||||
.ndo_stop = ieee80211_stop,
|
||||
.ndo_uninit = ieee80211_uninit,
|
||||
.ndo_start_xmit = ieee80211_subif_start_xmit_8023,
|
||||
.ndo_set_rx_mode = ieee80211_set_multicast_list,
|
||||
.ndo_set_mac_address = ieee80211_change_mac,
|
||||
.ndo_select_queue = ieee80211_netdev_select_queue,
|
||||
.ndo_get_stats64 = ieee80211_get_stats64,
|
||||
};
|
||||
|
||||
static bool ieee80211_iftype_supports_encap_offload(enum nl80211_iftype iftype)
|
||||
{
|
||||
switch (iftype) {
|
||||
@ -389,6 +834,31 @@ static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdat
|
||||
return true;
|
||||
}
|
||||
|
||||
static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct ieee80211_sub_if_data *bss = sdata;
|
||||
bool enabled;
|
||||
|
||||
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
|
||||
if (!sdata->bss)
|
||||
return;
|
||||
|
||||
bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap);
|
||||
}
|
||||
|
||||
if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) ||
|
||||
!ieee80211_iftype_supports_encap_offload(bss->vif.type))
|
||||
return;
|
||||
|
||||
enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED;
|
||||
if (sdata->wdev.use_4addr &&
|
||||
!(bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_4ADDR))
|
||||
enabled = false;
|
||||
|
||||
sdata->dev->netdev_ops = enabled ? &ieee80211_dataif_8023_ops :
|
||||
&ieee80211_dataif_ops;
|
||||
}
|
||||
|
||||
static void ieee80211_recalc_sdata_offload(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
@ -866,452 +1336,6 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
|
||||
return res;
|
||||
}
|
||||
|
||||
static int ieee80211_open(struct net_device *dev)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
||||
int err;
|
||||
|
||||
/* fail early if user set an invalid address */
|
||||
if (!is_valid_ether_addr(dev->dev_addr))
|
||||
return -EADDRNOTAVAIL;
|
||||
|
||||
err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return ieee80211_do_open(&sdata->wdev, true);
|
||||
}
|
||||
|
||||
static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
|
||||
bool going_down)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
unsigned long flags;
|
||||
struct sk_buff *skb, *tmp;
|
||||
u32 hw_reconf_flags = 0;
|
||||
int i, flushed;
|
||||
struct ps_data *ps;
|
||||
struct cfg80211_chan_def chandef;
|
||||
bool cancel_scan;
|
||||
struct cfg80211_nan_func *func;
|
||||
|
||||
clear_bit(SDATA_STATE_RUNNING, &sdata->state);
|
||||
|
||||
cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata;
|
||||
if (cancel_scan)
|
||||
ieee80211_scan_cancel(local);
|
||||
|
||||
/*
|
||||
* Stop TX on this interface first.
|
||||
*/
|
||||
if (sdata->dev)
|
||||
netif_tx_stop_all_queues(sdata->dev);
|
||||
|
||||
ieee80211_roc_purge(local, sdata);
|
||||
|
||||
switch (sdata->vif.type) {
|
||||
case NL80211_IFTYPE_STATION:
|
||||
ieee80211_mgd_stop(sdata);
|
||||
break;
|
||||
case NL80211_IFTYPE_ADHOC:
|
||||
ieee80211_ibss_stop(sdata);
|
||||
break;
|
||||
case NL80211_IFTYPE_MONITOR:
|
||||
if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES)
|
||||
break;
|
||||
list_del_rcu(&sdata->u.mntr.list);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* Remove all stations associated with this interface.
|
||||
*
|
||||
* This must be done before calling ops->remove_interface()
|
||||
* because otherwise we can later invoke ops->sta_notify()
|
||||
* whenever the STAs are removed, and that invalidates driver
|
||||
* assumptions about always getting a vif pointer that is valid
|
||||
* (because if we remove a STA after ops->remove_interface()
|
||||
* the driver will have removed the vif info already!)
|
||||
*
|
||||
* In WDS mode a station must exist here and be flushed, for
|
||||
* AP_VLANs stations may exist since there's nothing else that
|
||||
* would have removed them, but in other modes there shouldn't
|
||||
* be any stations.
|
||||
*/
|
||||
flushed = sta_info_flush(sdata);
|
||||
WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
|
||||
((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) ||
|
||||
(sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)));
|
||||
|
||||
/* don't count this interface for allmulti while it is down */
|
||||
if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
|
||||
atomic_dec(&local->iff_allmultis);
|
||||
|
||||
if (sdata->vif.type == NL80211_IFTYPE_AP) {
|
||||
local->fif_pspoll--;
|
||||
local->fif_probe_req--;
|
||||
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
|
||||
local->fif_probe_req--;
|
||||
}
|
||||
|
||||
if (sdata->dev) {
|
||||
netif_addr_lock_bh(sdata->dev);
|
||||
spin_lock_bh(&local->filter_lock);
|
||||
__hw_addr_unsync(&local->mc_list, &sdata->dev->mc,
|
||||
sdata->dev->addr_len);
|
||||
spin_unlock_bh(&local->filter_lock);
|
||||
netif_addr_unlock_bh(sdata->dev);
|
||||
}
|
||||
|
||||
del_timer_sync(&local->dynamic_ps_timer);
|
||||
cancel_work_sync(&local->dynamic_ps_enable_work);
|
||||
|
||||
cancel_work_sync(&sdata->recalc_smps);
|
||||
sdata_lock(sdata);
|
||||
mutex_lock(&local->mtx);
|
||||
sdata->vif.csa_active = false;
|
||||
if (sdata->vif.type == NL80211_IFTYPE_STATION)
|
||||
sdata->u.mgd.csa_waiting_bcn = false;
|
||||
if (sdata->csa_block_tx) {
|
||||
ieee80211_wake_vif_queues(local, sdata,
|
||||
IEEE80211_QUEUE_STOP_REASON_CSA);
|
||||
sdata->csa_block_tx = false;
|
||||
}
|
||||
mutex_unlock(&local->mtx);
|
||||
sdata_unlock(sdata);
|
||||
|
||||
cancel_work_sync(&sdata->csa_finalize_work);
|
||||
|
||||
cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
|
||||
|
||||
if (sdata->wdev.cac_started) {
|
||||
chandef = sdata->vif.bss_conf.chandef;
|
||||
WARN_ON(local->suspended);
|
||||
mutex_lock(&local->mtx);
|
||||
ieee80211_vif_release_channel(sdata);
|
||||
mutex_unlock(&local->mtx);
|
||||
cfg80211_cac_event(sdata->dev, &chandef,
|
||||
NL80211_RADAR_CAC_ABORTED,
|
||||
GFP_KERNEL);
|
||||
}
|
||||
|
||||
/* APs need special treatment */
|
||||
if (sdata->vif.type == NL80211_IFTYPE_AP) {
|
||||
struct ieee80211_sub_if_data *vlan, *tmpsdata;
|
||||
|
||||
/* down all dependent devices, that is VLANs */
|
||||
list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
|
||||
u.vlan.list)
|
||||
dev_close(vlan->dev);
|
||||
WARN_ON(!list_empty(&sdata->u.ap.vlans));
|
||||
} else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
|
||||
/* remove all packets in parent bc_buf pointing to this dev */
|
||||
ps = &sdata->bss->ps;
|
||||
|
||||
spin_lock_irqsave(&ps->bc_buf.lock, flags);
|
||||
skb_queue_walk_safe(&ps->bc_buf, skb, tmp) {
|
||||
if (skb->dev == sdata->dev) {
|
||||
__skb_unlink(skb, &ps->bc_buf);
|
||||
local->total_ps_buffered--;
|
||||
ieee80211_free_txskb(&local->hw, skb);
|
||||
}
|
||||
}
|
||||
spin_unlock_irqrestore(&ps->bc_buf.lock, flags);
|
||||
}
|
||||
|
||||
if (going_down)
|
||||
local->open_count--;
|
||||
|
||||
switch (sdata->vif.type) {
|
||||
case NL80211_IFTYPE_AP_VLAN:
|
||||
mutex_lock(&local->mtx);
|
||||
list_del(&sdata->u.vlan.list);
|
||||
mutex_unlock(&local->mtx);
|
||||
RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL);
|
||||
/* see comment in the default case below */
|
||||
ieee80211_free_keys(sdata, true);
|
||||
/* no need to tell driver */
|
||||
break;
|
||||
case NL80211_IFTYPE_MONITOR:
|
||||
if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) {
|
||||
local->cooked_mntrs--;
|
||||
break;
|
||||
}
|
||||
|
||||
local->monitors--;
|
||||
if (local->monitors == 0) {
|
||||
local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR;
|
||||
hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
|
||||
}
|
||||
|
||||
ieee80211_adjust_monitor_flags(sdata, -1);
|
||||
break;
|
||||
case NL80211_IFTYPE_NAN:
|
||||
/* clean all the functions */
|
||||
spin_lock_bh(&sdata->u.nan.func_lock);
|
||||
|
||||
idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) {
|
||||
idr_remove(&sdata->u.nan.function_inst_ids, i);
|
||||
cfg80211_free_nan_func(func);
|
||||
}
|
||||
idr_destroy(&sdata->u.nan.function_inst_ids);
|
||||
|
||||
spin_unlock_bh(&sdata->u.nan.func_lock);
|
||||
break;
|
||||
case NL80211_IFTYPE_P2P_DEVICE:
|
||||
/* relies on synchronize_rcu() below */
|
||||
RCU_INIT_POINTER(local->p2p_sdata, NULL);
|
||||
fallthrough;
|
||||
default:
|
||||
cancel_work_sync(&sdata->work);
|
||||
/*
|
||||
* When we get here, the interface is marked down.
|
||||
* Free the remaining keys, if there are any
|
||||
* (which can happen in AP mode if userspace sets
|
||||
* keys before the interface is operating, and maybe
|
||||
* also in WDS mode)
|
||||
*
|
||||
* Force the key freeing to always synchronize_net()
|
||||
* to wait for the RX path in case it is using this
|
||||
* interface enqueuing frames at this very time on
|
||||
* another CPU.
|
||||
*/
|
||||
ieee80211_free_keys(sdata, true);
|
||||
skb_queue_purge(&sdata->skb_queue);
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
|
||||
for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
|
||||
skb_queue_walk_safe(&local->pending[i], skb, tmp) {
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
if (info->control.vif == &sdata->vif) {
|
||||
__skb_unlink(skb, &local->pending[i]);
|
||||
ieee80211_free_txskb(&local->hw, skb);
|
||||
}
|
||||
}
|
||||
}
|
||||
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
|
||||
|
||||
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
|
||||
ieee80211_txq_remove_vlan(local, sdata);
|
||||
|
||||
sdata->bss = NULL;
|
||||
|
||||
if (local->open_count == 0)
|
||||
ieee80211_clear_tx_pending(local);
|
||||
|
||||
sdata->vif.bss_conf.beacon_int = 0;
|
||||
|
||||
/*
|
||||
* If the interface goes down while suspended, presumably because
|
||||
* the device was unplugged and that happens before our resume,
|
||||
* then the driver is already unconfigured and the remainder of
|
||||
* this function isn't needed.
|
||||
* XXX: what about WoWLAN? If the device has software state, e.g.
|
||||
* memory allocated, it might expect teardown commands from
|
||||
* mac80211 here?
|
||||
*/
|
||||
if (local->suspended) {
|
||||
WARN_ON(local->wowlan);
|
||||
WARN_ON(rtnl_dereference(local->monitor_sdata));
|
||||
return;
|
||||
}
|
||||
|
||||
switch (sdata->vif.type) {
|
||||
case NL80211_IFTYPE_AP_VLAN:
|
||||
break;
|
||||
case NL80211_IFTYPE_MONITOR:
|
||||
if (local->monitors == 0)
|
||||
ieee80211_del_virtual_monitor(local);
|
||||
|
||||
mutex_lock(&local->mtx);
|
||||
ieee80211_recalc_idle(local);
|
||||
mutex_unlock(&local->mtx);
|
||||
|
||||
if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
|
||||
break;
|
||||
|
||||
fallthrough;
|
||||
default:
|
||||
if (going_down)
|
||||
drv_remove_interface(local, sdata);
|
||||
}
|
||||
|
||||
ieee80211_recalc_ps(local);
|
||||
|
||||
if (cancel_scan)
|
||||
flush_delayed_work(&local->scan_work);
|
||||
|
||||
if (local->open_count == 0) {
|
||||
ieee80211_stop_device(local);
|
||||
|
||||
/* no reconfiguring after stop! */
|
||||
return;
|
||||
}
|
||||
|
||||
/* do after stop to avoid reconfiguring when we stop anyway */
|
||||
ieee80211_configure_filter(local);
|
||||
ieee80211_hw_config(local, hw_reconf_flags);
|
||||
|
||||
if (local->monitors == local->open_count)
|
||||
ieee80211_add_virtual_monitor(local);
|
||||
}
|
||||
|
||||
static int ieee80211_stop(struct net_device *dev)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
||||
|
||||
ieee80211_do_stop(sdata, true);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void ieee80211_set_multicast_list(struct net_device *dev)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
int allmulti, sdata_allmulti;
|
||||
|
||||
allmulti = !!(dev->flags & IFF_ALLMULTI);
|
||||
sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
|
||||
|
||||
if (allmulti != sdata_allmulti) {
|
||||
if (dev->flags & IFF_ALLMULTI)
|
||||
atomic_inc(&local->iff_allmultis);
|
||||
else
|
||||
atomic_dec(&local->iff_allmultis);
|
||||
sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
|
||||
}
|
||||
|
||||
spin_lock_bh(&local->filter_lock);
|
||||
__hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len);
|
||||
spin_unlock_bh(&local->filter_lock);
|
||||
ieee80211_queue_work(&local->hw, &local->reconfig_filter);
|
||||
}
|
||||
|
||||
/*
|
||||
* Called when the netdev is removed or, by the code below, before
|
||||
* the interface type changes.
|
||||
*/
|
||||
static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* free extra data */
|
||||
ieee80211_free_keys(sdata, false);
|
||||
|
||||
ieee80211_debugfs_remove_netdev(sdata);
|
||||
|
||||
for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
|
||||
__skb_queue_purge(&sdata->fragments[i].skb_list);
|
||||
sdata->fragment_next = 0;
|
||||
|
||||
if (ieee80211_vif_is_mesh(&sdata->vif))
|
||||
ieee80211_mesh_teardown_sdata(sdata);
|
||||
}
|
||||
|
||||
static void ieee80211_uninit(struct net_device *dev)
|
||||
{
|
||||
ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev));
|
||||
}
|
||||
|
||||
static u16 ieee80211_netdev_select_queue(struct net_device *dev,
|
||||
struct sk_buff *skb,
|
||||
struct net_device *sb_dev)
|
||||
{
|
||||
return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
|
||||
}
|
||||
|
||||
static void
|
||||
ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
|
||||
{
|
||||
int i;
|
||||
|
||||
for_each_possible_cpu(i) {
|
||||
const struct pcpu_sw_netstats *tstats;
|
||||
u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
|
||||
unsigned int start;
|
||||
|
||||
tstats = per_cpu_ptr(dev->tstats, i);
|
||||
|
||||
do {
|
||||
start = u64_stats_fetch_begin_irq(&tstats->syncp);
|
||||
rx_packets = tstats->rx_packets;
|
||||
tx_packets = tstats->tx_packets;
|
||||
rx_bytes = tstats->rx_bytes;
|
||||
tx_bytes = tstats->tx_bytes;
|
||||
} while (u64_stats_fetch_retry_irq(&tstats->syncp, start));
|
||||
|
||||
stats->rx_packets += rx_packets;
|
||||
stats->tx_packets += tx_packets;
|
||||
stats->rx_bytes += rx_bytes;
|
||||
stats->tx_bytes += tx_bytes;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct net_device_ops ieee80211_dataif_ops = {
|
||||
.ndo_open = ieee80211_open,
|
||||
.ndo_stop = ieee80211_stop,
|
||||
.ndo_uninit = ieee80211_uninit,
|
||||
.ndo_start_xmit = ieee80211_subif_start_xmit,
|
||||
.ndo_set_rx_mode = ieee80211_set_multicast_list,
|
||||
.ndo_set_mac_address = ieee80211_change_mac,
|
||||
.ndo_select_queue = ieee80211_netdev_select_queue,
|
||||
.ndo_get_stats64 = ieee80211_get_stats64,
|
||||
};
|
||||
|
||||
static u16 ieee80211_monitor_select_queue(struct net_device *dev,
|
||||
struct sk_buff *skb,
|
||||
struct net_device *sb_dev)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
struct ieee80211_hdr *hdr;
|
||||
int len_rthdr;
|
||||
|
||||
if (local->hw.queues < IEEE80211_NUM_ACS)
|
||||
return 0;
|
||||
|
||||
/* reset flags and info before parsing radiotap header */
|
||||
memset(info, 0, sizeof(*info));
|
||||
|
||||
if (!ieee80211_parse_tx_radiotap(skb, dev))
|
||||
return 0; /* doesn't matter, frame will be dropped */
|
||||
|
||||
len_rthdr = ieee80211_get_radiotap_len(skb->data);
|
||||
hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
|
||||
if (skb->len < len_rthdr + 2 ||
|
||||
skb->len < len_rthdr + ieee80211_hdrlen(hdr->frame_control))
|
||||
return 0; /* doesn't matter, frame will be dropped */
|
||||
|
||||
return ieee80211_select_queue_80211(sdata, skb, hdr);
|
||||
}
|
||||
|
||||
static const struct net_device_ops ieee80211_monitorif_ops = {
|
||||
.ndo_open = ieee80211_open,
|
||||
.ndo_stop = ieee80211_stop,
|
||||
.ndo_uninit = ieee80211_uninit,
|
||||
.ndo_start_xmit = ieee80211_monitor_start_xmit,
|
||||
.ndo_set_rx_mode = ieee80211_set_multicast_list,
|
||||
.ndo_set_mac_address = ieee80211_change_mac,
|
||||
.ndo_select_queue = ieee80211_monitor_select_queue,
|
||||
.ndo_get_stats64 = ieee80211_get_stats64,
|
||||
};
|
||||
|
||||
static const struct net_device_ops ieee80211_dataif_8023_ops = {
|
||||
.ndo_open = ieee80211_open,
|
||||
.ndo_stop = ieee80211_stop,
|
||||
.ndo_uninit = ieee80211_uninit,
|
||||
.ndo_start_xmit = ieee80211_subif_start_xmit_8023,
|
||||
.ndo_set_rx_mode = ieee80211_set_multicast_list,
|
||||
.ndo_set_mac_address = ieee80211_change_mac,
|
||||
.ndo_select_queue = ieee80211_netdev_select_queue,
|
||||
.ndo_get_stats64 = ieee80211_get_stats64,
|
||||
};
|
||||
|
||||
static void ieee80211_if_free(struct net_device *dev)
|
||||
{
|
||||
free_percpu(dev->tstats);
|
||||
@ -1332,32 +1356,6 @@ static void ieee80211_if_setup_no_queue(struct net_device *dev)
|
||||
dev->priv_flags |= IFF_NO_QUEUE;
|
||||
}
|
||||
|
||||
static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct ieee80211_sub_if_data *bss = sdata;
|
||||
bool enabled;
|
||||
|
||||
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
|
||||
if (!sdata->bss)
|
||||
return;
|
||||
|
||||
bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap);
|
||||
}
|
||||
|
||||
if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) ||
|
||||
!ieee80211_iftype_supports_encap_offload(bss->vif.type))
|
||||
return;
|
||||
|
||||
enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED;
|
||||
if (sdata->wdev.use_4addr &&
|
||||
!(bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_4ADDR))
|
||||
enabled = false;
|
||||
|
||||
sdata->dev->netdev_ops = enabled ? &ieee80211_dataif_8023_ops :
|
||||
&ieee80211_dataif_ops;
|
||||
}
|
||||
|
||||
static void ieee80211_iface_work(struct work_struct *work)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata =
|
||||
|
||||
Loading…
Reference in New Issue
Block a user