Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 328 insertions, 0 deletions

diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
new file mode 100644
index 000000000..9f0f437a0
--- /dev/null
+++ b/net/mac80211/driver-ops.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright 2015 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "trace.h"
+#include "driver-ops.h"
+
+int drv_start(struct ieee80211_local *local)
+{
+	int ret;
+
+	might_sleep();
+
+	if (WARN_ON(local->started))
+		return -EALREADY;
+
+	trace_drv_start(local);
+	local->started = true;
+	/* allow rx frames */
+	smp_mb();
+	ret = local->ops->start(&local->hw);
+	trace_drv_return_int(local, ret);
+
+	if (ret)
+		local->started = false;
+
+	return ret;
+}
+
+void drv_stop(struct ieee80211_local *local)
+{
+	might_sleep();
+
+	if (WARN_ON(!local->started))
+		return;
+
+	trace_drv_stop(local);
+	local->ops->stop(&local->hw);
+	trace_drv_return_void(local);
+
+	/* sync away all work on the tasklet before clearing started */
+	tasklet_disable(&local->tasklet);
+	tasklet_enable(&local->tasklet);
+
+	barrier();
+
+	local->started = false;
+}
+
+int drv_add_interface(struct ieee80211_local *local,
+		      struct ieee80211_sub_if_data *sdata)
+{
+	int ret;
+
+	might_sleep();
+
+	if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+		    (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
+		     !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
+		     !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
+		return -EINVAL;
+
+	trace_drv_add_interface(local, sdata);
+	ret = local->ops->add_interface(&local->hw, &sdata->vif);
+	trace_drv_return_int(local, ret);
+
+	if (ret == 0)
+		sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
+
+	return ret;
+}
+
+int drv_change_interface(struct ieee80211_local *local,
+			 struct ieee80211_sub_if_data *sdata,
+			 enum nl80211_iftype type, bool p2p)
+{
+	int ret;
+
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return -EIO;
+
+	trace_drv_change_interface(local, sdata, type, p2p);
+	ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
+	trace_drv_return_int(local, ret);
+	return ret;
+}
+
+void drv_remove_interface(struct ieee80211_local *local,
+			  struct ieee80211_sub_if_data *sdata)
+{
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	trace_drv_remove_interface(local, sdata);
+	local->ops->remove_interface(&local->hw, &sdata->vif);
+	sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
+	trace_drv_return_void(local);
+}
+
+__must_check
+int drv_sta_state(struct ieee80211_local *local,
+		  struct ieee80211_sub_if_data *sdata,
+		  struct sta_info *sta,
+		  enum ieee80211_sta_state old_state,
+		  enum ieee80211_sta_state new_state)
+{
+	int ret = 0;
+
+	might_sleep();
+
+	sdata = get_bss_sdata(sdata);
+	if (!check_sdata_in_driver(sdata))
+		return -EIO;
+
+	trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
+	if (local->ops->sta_state) {
+		ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
+					    old_state, new_state);
+	} else if (old_state == IEEE80211_STA_AUTH &&
+		   new_state == IEEE80211_STA_ASSOC) {
+		ret = drv_sta_add(local, sdata, &sta->sta);
+		if (ret == 0) {
+			sta->uploaded = true;
+			if (rcu_access_pointer(sta->sta.rates))
+				drv_sta_rate_tbl_update(local, sdata, &sta->sta);
+		}
+	} else if (old_state == IEEE80211_STA_ASSOC &&
+		   new_state == IEEE80211_STA_AUTH) {
+		drv_sta_remove(local, sdata, &sta->sta);
+	}
+	trace_drv_return_int(local, ret);
+	return ret;
+}
+
+void drv_sta_rc_update(struct ieee80211_local *local,
+		       struct ieee80211_sub_if_data *sdata,
+		       struct ieee80211_sta *sta, u32 changed)
+{
+	sdata = get_bss_sdata(sdata);
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
+		(sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+		 sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
+
+	trace_drv_sta_rc_update(local, sdata, sta, changed);
+	if (local->ops->sta_rc_update)
+		local->ops->sta_rc_update(&local->hw, &sdata->vif,
+					  sta, changed);
+
+	trace_drv_return_void(local);
+}
+
+int drv_conf_tx(struct ieee80211_local *local,
+		struct ieee80211_sub_if_data *sdata, u16 ac,
+		const struct ieee80211_tx_queue_params *params)
+{
+	int ret = -EOPNOTSUPP;
+
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return -EIO;
+
+	if (params->cw_min == 0 || params->cw_min > params->cw_max) {
+		/*
+		 * If we can't configure hardware anyway, don't warn. We may
+		 * never have initialized the CW parameters.
+		 */
+		WARN_ONCE(local->ops->conf_tx,
+			  "%s: invalid CW_min/CW_max: %d/%d\n",
+			  sdata->name, params->cw_min, params->cw_max);
+		return -EINVAL;
+	}
+
+	trace_drv_conf_tx(local, sdata, ac, params);
+	if (local->ops->conf_tx)
+		ret = local->ops->conf_tx(&local->hw, &sdata->vif,
+					  ac, params);
+	trace_drv_return_int(local, ret);
+	return ret;
+}
+
+u64 drv_get_tsf(struct ieee80211_local *local,
+		struct ieee80211_sub_if_data *sdata)
+{
+	u64 ret = -1ULL;
+
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return ret;
+
+	trace_drv_get_tsf(local, sdata);
+	if (local->ops->get_tsf)
+		ret = local->ops->get_tsf(&local->hw, &sdata->vif);
+	trace_drv_return_u64(local, ret);
+	return ret;
+}
+
+void drv_set_tsf(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata,
+		 u64 tsf)
+{
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	trace_drv_set_tsf(local, sdata, tsf);
+	if (local->ops->set_tsf)
+		local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
+	trace_drv_return_void(local);
+}
+
+void drv_offset_tsf(struct ieee80211_local *local,
+		    struct ieee80211_sub_if_data *sdata,
+		    s64 offset)
+{
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	trace_drv_offset_tsf(local, sdata, offset);
+	if (local->ops->offset_tsf)
+		local->ops->offset_tsf(&local->hw, &sdata->vif, offset);
+	trace_drv_return_void(local);
+}
+
+void drv_reset_tsf(struct ieee80211_local *local,
+		   struct ieee80211_sub_if_data *sdata)
+{
+	might_sleep();
+
+	if (!check_sdata_in_driver(sdata))
+		return;
+
+	trace_drv_reset_tsf(local, sdata);
+	if (local->ops->reset_tsf)
+		local->ops->reset_tsf(&local->hw, &sdata->vif);
+	trace_drv_return_void(local);
+}
+
+int drv_switch_vif_chanctx(struct ieee80211_local *local,
+			   struct ieee80211_vif_chanctx_switch *vifs,
+			   int n_vifs, enum ieee80211_chanctx_switch_mode mode)
+{
+	int ret = 0;
+	int i;
+
+	might_sleep();
+
+	if (!local->ops->switch_vif_chanctx)
+		return -EOPNOTSUPP;
+
+	for (i = 0; i < n_vifs; i++) {
+		struct ieee80211_chanctx *new_ctx =
+			container_of(vifs[i].new_ctx,
+				     struct ieee80211_chanctx,
+				     conf);
+		struct ieee80211_chanctx *old_ctx =
+			container_of(vifs[i].old_ctx,
+				     struct ieee80211_chanctx,
+				     conf);
+
+		WARN_ON_ONCE(!old_ctx->driver_present);
+		WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
+			      new_ctx->driver_present) ||
+			     (mode == CHANCTX_SWMODE_REASSIGN_VIF &&
+			      !new_ctx->driver_present));
+	}
+
+	trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
+	ret = local->ops->switch_vif_chanctx(&local->hw,
+					     vifs, n_vifs, mode);
+	trace_drv_return_int(local, ret);
+
+	if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
+		for (i = 0; i < n_vifs; i++) {
+			struct ieee80211_chanctx *new_ctx =
+				container_of(vifs[i].new_ctx,
+					     struct ieee80211_chanctx,
+					     conf);
+			struct ieee80211_chanctx *old_ctx =
+				container_of(vifs[i].old_ctx,
+					     struct ieee80211_chanctx,
+					     conf);
+
+			new_ctx->driver_present = true;
+			old_ctx->driver_present = false;
+		}
+	}
+
+	return ret;
+}
+
+int drv_ampdu_action(struct ieee80211_local *local,
+		     struct ieee80211_sub_if_data *sdata,
+		     struct ieee80211_ampdu_params *params)
+{
+	int ret = -EOPNOTSUPP;
+
+	might_sleep();
+
+	sdata = get_bss_sdata(sdata);
+	if (!check_sdata_in_driver(sdata))
+		return -EIO;
+
+	trace_drv_ampdu_action(local, sdata, params);
+
+	if (local->ops->ampdu_action)
+		ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params);
+
+	trace_drv_return_int(local, ret);
+
+	return ret;
+}