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/*
* 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;
} 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_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;
}
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