[deliverable/linux.git] / net / mac80211 / driver-ops.c

/*
 * 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_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;
	} 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 (WARN_ONCE(params->cw_min == 0 ||
		      params->cw_min > params->cw_max,
		      "%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;
}

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;

	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,
		     enum ieee80211_ampdu_mlme_action action,
		     struct ieee80211_sta *sta, u16 tid,
		     u16 *ssn, u8 buf_size, bool amsdu)
{
	int ret = -EOPNOTSUPP;

	might_sleep();

	sdata = get_bss_sdata(sdata);
	if (!check_sdata_in_driver(sdata))
		return -EIO;

	trace_drv_ampdu_action(local, sdata, action, sta, tid,
			       ssn, buf_size, amsdu);

	if (local->ops->ampdu_action)
		ret = local->ops->ampdu_action(&local->hw, &sdata->vif, action,
					       sta, tid, ssn, buf_size, amsdu);

	trace_drv_return_int(local, ret);

	return ret;
}
Commit	Line	Data
727da60b DV	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License version 2 as
	4	* published by the Free Software Foundation.
	5	*/
	6	#include <net/mac80211.h>
	7	#include "ieee80211_i.h"
	8	#include "trace.h"
	9	#include "driver-ops.h"
	10
9aae296a DV	11	int drv_add_interface(struct ieee80211_local *local,
	12	struct ieee80211_sub_if_data *sdata)
	13	{
	14	int ret;
	15
	16	might_sleep();
	17
	18	if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN \|\|
	19	(sdata->vif.type == NL80211_IFTYPE_MONITOR &&
	20	!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
	21	!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))))
	22	return -EINVAL;
	23
	24	trace_drv_add_interface(local, sdata);
	25	ret = local->ops->add_interface(&local->hw, &sdata->vif);
	26	trace_drv_return_int(local, ret);
	27
	28	if (ret == 0)
	29	sdata->flags \|= IEEE80211_SDATA_IN_DRIVER;
	30
	31	return ret;
	32	}
	33
	34	int drv_change_interface(struct ieee80211_local *local,
	35	struct ieee80211_sub_if_data *sdata,
	36	enum nl80211_iftype type, bool p2p)
	37	{
	38	int ret;
	39
	40	might_sleep();
	41
	42	if (!check_sdata_in_driver(sdata))
	43	return -EIO;
	44
	45	trace_drv_change_interface(local, sdata, type, p2p);
	46	ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
	47	trace_drv_return_int(local, ret);
	48	return ret;
	49	}
	50
	51	void drv_remove_interface(struct ieee80211_local *local,
	52	struct ieee80211_sub_if_data *sdata)
	53	{
	54	might_sleep();
	55
	56	if (!check_sdata_in_driver(sdata))
	57	return;
	58
	59	trace_drv_remove_interface(local, sdata);
	60	local->ops->remove_interface(&local->hw, &sdata->vif);
	61	sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
	62	trace_drv_return_void(local);
	63	}
	64
727da60b DV	65	__must_check
	66	int drv_sta_state(struct ieee80211_local *local,
	67	struct ieee80211_sub_if_data *sdata,
	68	struct sta_info *sta,
	69	enum ieee80211_sta_state old_state,
	70	enum ieee80211_sta_state new_state)
	71	{
	72	int ret = 0;
	73
	74	might_sleep();
	75
	76	sdata = get_bss_sdata(sdata);
	77	if (!check_sdata_in_driver(sdata))
	78	return -EIO;
	79
	80	trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
	81	if (local->ops->sta_state) {
	82	ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
	83	old_state, new_state);
	84	} else if (old_state == IEEE80211_STA_AUTH &&
	85	new_state == IEEE80211_STA_ASSOC) {
	86	ret = drv_sta_add(local, sdata, &sta->sta);
	87	if (ret == 0)
	88	sta->uploaded = true;
	89	} else if (old_state == IEEE80211_STA_ASSOC &&
	90	new_state == IEEE80211_STA_AUTH) {
	91	drv_sta_remove(local, sdata, &sta->sta);
	92	}
	93	trace_drv_return_int(local, ret);
	94	return ret;
	95	}
b23dcd4a	96
4fbd572c DV	97	void drv_sta_rc_update(struct ieee80211_local *local,
	98	struct ieee80211_sub_if_data *sdata,
	99	struct ieee80211_sta *sta, u32 changed)
	100	{
	101	sdata = get_bss_sdata(sdata);
	102	if (!check_sdata_in_driver(sdata))
	103	return;
	104
	105	WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
	106	(sdata->vif.type != NL80211_IFTYPE_ADHOC &&
	107	sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
	108
	109	trace_drv_sta_rc_update(local, sdata, sta, changed);
	110	if (local->ops->sta_rc_update)
	111	local->ops->sta_rc_update(&local->hw, &sdata->vif,
	112	sta, changed);
	113
	114	trace_drv_return_void(local);
	115	}
	116
b23dcd4a DV	117	int drv_conf_tx(struct ieee80211_local *local,
	118	struct ieee80211_sub_if_data *sdata, u16 ac,
	119	const struct ieee80211_tx_queue_params *params)
	120	{
	121	int ret = -EOPNOTSUPP;
	122
	123	might_sleep();
	124
	125	if (!check_sdata_in_driver(sdata))
	126	return -EIO;
	127
	128	if (WARN_ONCE(params->cw_min == 0 \|\|
	129	params->cw_min > params->cw_max,
	130	"%s: invalid CW_min/CW_max: %d/%d\n",
	131	sdata->name, params->cw_min, params->cw_max))
	132	return -EINVAL;
	133
	134	trace_drv_conf_tx(local, sdata, ac, params);
	135	if (local->ops->conf_tx)
	136	ret = local->ops->conf_tx(&local->hw, &sdata->vif,
	137	ac, params);
	138	trace_drv_return_int(local, ret);
	139	return ret;
	140	}
42677ed3 DV	141
	142	int drv_switch_vif_chanctx(struct ieee80211_local *local,
	143	struct ieee80211_vif_chanctx_switch *vifs,
	144	int n_vifs, enum ieee80211_chanctx_switch_mode mode)
	145	{
	146	int ret = 0;
	147	int i;
	148
	149	if (!local->ops->switch_vif_chanctx)
	150	return -EOPNOTSUPP;
	151
	152	for (i = 0; i < n_vifs; i++) {
	153	struct ieee80211_chanctx *new_ctx =
	154	container_of(vifs[i].new_ctx,
	155	struct ieee80211_chanctx,
	156	conf);
	157	struct ieee80211_chanctx *old_ctx =
	158	container_of(vifs[i].old_ctx,
	159	struct ieee80211_chanctx,
	160	conf);
	161
	162	WARN_ON_ONCE(!old_ctx->driver_present);
	163	WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
	164	new_ctx->driver_present) \|\|
	165	(mode == CHANCTX_SWMODE_REASSIGN_VIF &&
	166	!new_ctx->driver_present));
	167	}
	168
	169	trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
	170	ret = local->ops->switch_vif_chanctx(&local->hw,
	171	vifs, n_vifs, mode);
	172	trace_drv_return_int(local, ret);
	173
	174	if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
	175	for (i = 0; i < n_vifs; i++) {
	176	struct ieee80211_chanctx *new_ctx =
	177	container_of(vifs[i].new_ctx,
	178	struct ieee80211_chanctx,
	179	conf);
	180	struct ieee80211_chanctx *old_ctx =
	181	container_of(vifs[i].old_ctx,
	182	struct ieee80211_chanctx,
	183	conf);
	184
	185	new_ctx->driver_present = true;
	186	old_ctx->driver_present = false;
	187	}
	188	}
	189
	190	return ret;
	191	}
6db96838 DV	192
	193	int drv_ampdu_action(struct ieee80211_local *local,
	194	struct ieee80211_sub_if_data *sdata,
	195	enum ieee80211_ampdu_mlme_action action,
	196	struct ieee80211_sta *sta, u16 tid,
	197	u16 *ssn, u8 buf_size, bool amsdu)
	198	{
	199	int ret = -EOPNOTSUPP;
	200
	201	might_sleep();
	202
	203	sdata = get_bss_sdata(sdata);
	204	if (!check_sdata_in_driver(sdata))
	205	return -EIO;
	206
	207	trace_drv_ampdu_action(local, sdata, action, sta, tid,
	208	ssn, buf_size, amsdu);
	209
	210	if (local->ops->ampdu_action)
	211	ret = local->ops->ampdu_action(&local->hw, &sdata->vif, action,
	212	sta, tid, ssn, buf_size, amsdu);
	213
	214	trace_drv_return_int(local, ret);
	215
	216	return ret;
	217	}