cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard

ETSI standard defines "Offchannel CAC" as:
"Off-Channel CAC is performed by a number of non-continuous checks
spread over a period in time. This period, which is required to
determine the presence of radar signals, is defined as the Off-Channel
CAC Time..
Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time
4 hours..".
mac80211 implementation refers to a dedicated hw chain used for continuous
radar monitoring. Rename offchannel_* references to background_* in
order to avoid confusion with ETSI standard.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Lorenzo Bianconi 2021-11-29 14:11:24 +01:00 коммит произвёл Johannes Berg
Родитель 852a07c10d
Коммит a95bfb876f
11 изменённых файлов: 102 добавлений и 100 удалений

Просмотреть файл

@ -4073,14 +4073,14 @@ struct mgmt_frame_regs {
* those to decrypt (Re)Association Request and encrypt (Re)Association
* Response frame.
*
* @set_radar_offchan: Configure dedicated offchannel chain available for
* @set_radar_background: Configure dedicated offchannel chain available for
* radar/CAC detection on some hw. This chain can't be used to transmit
* or receive frames and it is bounded to a running wdev.
* Offchannel radar/CAC detection allows to avoid the CAC downtime
* Background radar/CAC detection allows to avoid the CAC downtime
* switching to a different channel during CAC detection on the selected
* radar channel.
* The caller is expected to set chandef pointer to NULL in order to
* disable offchannel CAC/radar detection.
* disable background CAC/radar detection.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@ -4413,8 +4413,8 @@ struct cfg80211_ops {
struct cfg80211_color_change_settings *params);
int (*set_fils_aad)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_fils_aad *fils_aad);
int (*set_radar_offchan)(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef);
int (*set_radar_background)(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef);
};
/*
@ -7626,9 +7626,9 @@ cfg80211_radar_event(struct wiphy *wiphy,
}
static inline void
cfg80211_offchan_radar_event(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
gfp_t gfp)
cfg80211_background_radar_event(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
gfp_t gfp)
{
__cfg80211_radar_event(wiphy, chandef, true, gfp);
}
@ -7663,13 +7663,13 @@ void cfg80211_cac_event(struct net_device *netdev,
enum nl80211_radar_event event, gfp_t gfp);
/**
* cfg80211_offchan_cac_abort - Channel Availability Check offchan abort event
* cfg80211_background_cac_abort - Channel Availability Check offchan abort event
* @wiphy: the wiphy
*
* This function is called by the driver when a Channel Availability Check
* (CAC) is aborted by a offchannel dedicated chain.
*/
void cfg80211_offchan_cac_abort(struct wiphy *wiphy);
void cfg80211_background_cac_abort(struct wiphy *wiphy);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying

Просмотреть файл

@ -3939,14 +3939,14 @@ struct ieee80211_prep_tx_info {
* twt structure.
* @twt_teardown_request: Update the hw with TWT teardown request received
* from the peer.
* @set_radar_offchan: Configure dedicated offchannel chain available for
* @set_radar_background: Configure dedicated offchannel chain available for
* radar/CAC detection on some hw. This chain can't be used to transmit
* or receive frames and it is bounded to a running wdev.
* Offchannel radar/CAC detection allows to avoid the CAC downtime
* Background radar/CAC detection allows to avoid the CAC downtime
* switching to a different channel during CAC detection on the selected
* radar channel.
* The caller is expected to set chandef pointer to NULL in order to
* disable offchannel CAC/radar detection.
* disable background CAC/radar detection.
* @net_fill_forward_path: Called from .ndo_fill_forward_path in order to
* resolve a path for hardware flow offloading
*/
@ -4277,8 +4277,8 @@ struct ieee80211_ops {
struct ieee80211_twt_setup *twt);
void (*twt_teardown_request)(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u8 flowid);
int (*set_radar_offchan)(struct ieee80211_hw *hw,
struct cfg80211_chan_def *chandef);
int (*set_radar_background)(struct ieee80211_hw *hw,
struct cfg80211_chan_def *chandef);
int (*net_fill_forward_path)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,

Просмотреть файл

@ -2646,10 +2646,10 @@ enum nl80211_commands {
* Mandatory parameter for the transmitting interface to enable MBSSID.
* Optional for the non-transmitting interfaces.
*
* @NL80211_ATTR_RADAR_OFFCHAN: Configure dedicated offchannel chain available for
* radar/CAC detection on some hw. This chain can't be used to transmit
* or receive frames and it is bounded to a running wdev.
* Offchannel radar/CAC detection allows to avoid the CAC downtime
* @NL80211_ATTR_RADAR_BACKGROUND: Configure dedicated offchannel chain
* available for radar/CAC detection on some hw. This chain can't be used
* to transmit or receive frames and it is bounded to a running wdev.
* Background radar/CAC detection allows to avoid the CAC downtime
* switching on a different channel during CAC detection on the selected
* radar channel.
*
@ -3159,7 +3159,7 @@ enum nl80211_attrs {
NL80211_ATTR_MBSSID_CONFIG,
NL80211_ATTR_MBSSID_ELEMS,
NL80211_ATTR_RADAR_OFFCHAN,
NL80211_ATTR_RADAR_BACKGROUND,
/* add attributes here, update the policy in nl80211.c */
@ -6066,7 +6066,7 @@ enum nl80211_feature_flags {
* frames. Userspace has to share FILS AAD details to the driver by using
* @NL80211_CMD_SET_FILS_AAD.
*
* @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
* @NL80211_EXT_FEATURE_RADAR_BACKGROUND: Device supports background radar/CAC
* detection.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
@ -6135,7 +6135,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
NL80211_EXT_FEATURE_BSS_COLOR,
NL80211_EXT_FEATURE_FILS_CRYPTO_OFFLOAD,
NL80211_EXT_FEATURE_RADAR_OFFCHAN,
NL80211_EXT_FEATURE_RADAR_BACKGROUND,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,

Просмотреть файл

@ -4414,15 +4414,15 @@ out:
}
static int
ieee80211_set_radar_offchan(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef)
ieee80211_set_radar_background(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
if (!local->ops->set_radar_offchan)
if (!local->ops->set_radar_background)
return -EOPNOTSUPP;
return local->ops->set_radar_offchan(&local->hw, chandef);
return local->ops->set_radar_background(&local->hw, chandef);
}
const struct cfg80211_ops mac80211_config_ops = {
@ -4529,5 +4529,5 @@ const struct cfg80211_ops mac80211_config_ops = {
.reset_tid_config = ieee80211_reset_tid_config,
.set_sar_specs = ieee80211_set_sar_specs,
.color_change = ieee80211_color_change,
.set_radar_offchan = ieee80211_set_radar_offchan,
.set_radar_background = ieee80211_set_radar_background,
};

Просмотреть файл

@ -718,13 +718,13 @@ static bool
cfg80211_offchan_chain_is_active(struct cfg80211_registered_device *rdev,
struct ieee80211_channel *channel)
{
if (!rdev->offchan_radar_wdev)
if (!rdev->background_radar_wdev)
return false;
if (!cfg80211_chandef_valid(&rdev->offchan_radar_chandef))
if (!cfg80211_chandef_valid(&rdev->background_radar_chandef))
return false;
return cfg80211_is_sub_chan(&rdev->offchan_radar_chandef, channel);
return cfg80211_is_sub_chan(&rdev->background_radar_chandef, channel);
}
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,

Просмотреть файл

@ -545,9 +545,10 @@ use_default_name:
INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
INIT_WORK(&rdev->event_work, cfg80211_event_work);
INIT_WORK(&rdev->offchan_cac_abort_wk, cfg80211_offchan_cac_abort_wk);
INIT_DELAYED_WORK(&rdev->offchan_cac_done_wk,
cfg80211_offchan_cac_done_wk);
INIT_WORK(&rdev->background_cac_abort_wk,
cfg80211_background_cac_abort_wk);
INIT_DELAYED_WORK(&rdev->background_cac_done_wk,
cfg80211_background_cac_done_wk);
init_waitqueue_head(&rdev->dev_wait);
@ -1057,13 +1058,13 @@ void wiphy_unregister(struct wiphy *wiphy)
cancel_work_sync(&rdev->conn_work);
flush_work(&rdev->event_work);
cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
cancel_delayed_work_sync(&rdev->offchan_cac_done_wk);
cancel_delayed_work_sync(&rdev->background_cac_done_wk);
flush_work(&rdev->destroy_work);
flush_work(&rdev->sched_scan_stop_wk);
flush_work(&rdev->propagate_radar_detect_wk);
flush_work(&rdev->propagate_cac_done_wk);
flush_work(&rdev->mgmt_registrations_update_wk);
flush_work(&rdev->offchan_cac_abort_wk);
flush_work(&rdev->background_cac_abort_wk);
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
@ -1212,7 +1213,7 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
cfg80211_pmsr_wdev_down(wdev);
cfg80211_stop_offchan_radar_detection(wdev);
cfg80211_stop_background_radar_detection(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:

Просмотреть файл

@ -84,10 +84,10 @@ struct cfg80211_registered_device {
struct delayed_work dfs_update_channels_wk;
struct wireless_dev *offchan_radar_wdev;
struct cfg80211_chan_def offchan_radar_chandef;
struct delayed_work offchan_cac_done_wk;
struct work_struct offchan_cac_abort_wk;
struct wireless_dev *background_radar_wdev;
struct cfg80211_chan_def background_radar_chandef;
struct delayed_work background_cac_done_wk;
struct work_struct background_cac_abort_wk;
/* netlink port which started critical protocol (0 means not started) */
u32 crit_proto_nlportid;
@ -497,15 +497,15 @@ cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
int
cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef);
cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef);
void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev);
void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev);
void cfg80211_offchan_cac_done_wk(struct work_struct *work);
void cfg80211_background_cac_done_wk(struct work_struct *work);
void cfg80211_offchan_cac_abort_wk(struct work_struct *work);
void cfg80211_background_cac_abort_wk(struct work_struct *work);
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan);

Просмотреть файл

@ -920,7 +920,7 @@ void __cfg80211_radar_event(struct wiphy *wiphy,
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
if (offchan)
queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
cfg80211_sched_dfs_chan_update(rdev);
@ -975,10 +975,10 @@ void cfg80211_cac_event(struct net_device *netdev,
EXPORT_SYMBOL(cfg80211_cac_event);
static void
__cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event)
__cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event)
{
struct wiphy *wiphy = &rdev->wiphy;
struct net_device *netdev;
@ -988,7 +988,7 @@ __cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
if (!cfg80211_chandef_valid(chandef))
return;
if (!rdev->offchan_radar_wdev)
if (!rdev->background_radar_wdev)
return;
switch (event) {
@ -997,12 +997,12 @@ __cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef));
queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
cfg80211_sched_dfs_chan_update(rdev);
wdev = rdev->offchan_radar_wdev;
wdev = rdev->background_radar_wdev;
break;
case NL80211_RADAR_CAC_ABORTED:
if (!cancel_delayed_work(&rdev->offchan_cac_done_wk))
if (!cancel_delayed_work(&rdev->background_cac_done_wk))
return;
wdev = rdev->offchan_radar_wdev;
wdev = rdev->background_radar_wdev;
break;
case NL80211_RADAR_CAC_STARTED:
break;
@ -1015,49 +1015,49 @@ __cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
}
static void
cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event)
cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event)
{
wiphy_lock(&rdev->wiphy);
__cfg80211_offchan_cac_event(rdev, rdev->offchan_radar_wdev,
chandef, event);
__cfg80211_background_cac_event(rdev, rdev->background_radar_wdev,
chandef, event);
wiphy_unlock(&rdev->wiphy);
}
void cfg80211_offchan_cac_done_wk(struct work_struct *work)
void cfg80211_background_cac_done_wk(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct cfg80211_registered_device *rdev;
rdev = container_of(delayed_work, struct cfg80211_registered_device,
offchan_cac_done_wk);
cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
NL80211_RADAR_CAC_FINISHED);
background_cac_done_wk);
cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
NL80211_RADAR_CAC_FINISHED);
}
void cfg80211_offchan_cac_abort_wk(struct work_struct *work)
void cfg80211_background_cac_abort_wk(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device,
offchan_cac_abort_wk);
cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
background_cac_abort_wk);
cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
}
void cfg80211_offchan_cac_abort(struct wiphy *wiphy)
void cfg80211_background_cac_abort(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
}
EXPORT_SYMBOL(cfg80211_offchan_cac_abort);
EXPORT_SYMBOL(cfg80211_background_cac_abort);
int
cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef)
cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef)
{
unsigned int cac_time_ms;
int err;
@ -1065,19 +1065,19 @@ cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
lockdep_assert_wiphy(&rdev->wiphy);
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_RADAR_OFFCHAN))
NL80211_EXT_FEATURE_RADAR_BACKGROUND))
return -EOPNOTSUPP;
/* Offchannel chain already locked by another wdev */
if (rdev->offchan_radar_wdev && rdev->offchan_radar_wdev != wdev)
if (rdev->background_radar_wdev && rdev->background_radar_wdev != wdev)
return -EBUSY;
/* CAC already in progress on the offchannel chain */
if (rdev->offchan_radar_wdev == wdev &&
delayed_work_pending(&rdev->offchan_cac_done_wk))
if (rdev->background_radar_wdev == wdev &&
delayed_work_pending(&rdev->background_cac_done_wk))
return -EBUSY;
err = rdev_set_radar_offchan(rdev, chandef);
err = rdev_set_radar_background(rdev, chandef);
if (err)
return err;
@ -1085,30 +1085,31 @@ cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
if (!cac_time_ms)
cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
rdev->offchan_radar_chandef = *chandef;
rdev->offchan_radar_wdev = wdev; /* Get offchain ownership */
rdev->background_radar_chandef = *chandef;
rdev->background_radar_wdev = wdev; /* Get offchain ownership */
__cfg80211_offchan_cac_event(rdev, wdev, chandef,
NL80211_RADAR_CAC_STARTED);
queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_done_wk,
__cfg80211_background_cac_event(rdev, wdev, chandef,
NL80211_RADAR_CAC_STARTED);
queue_delayed_work(cfg80211_wq, &rdev->background_cac_done_wk,
msecs_to_jiffies(cac_time_ms));
return 0;
}
void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev)
void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
lockdep_assert_wiphy(wiphy);
if (wdev != rdev->offchan_radar_wdev)
if (wdev != rdev->background_radar_wdev)
return;
rdev_set_radar_offchan(rdev, NULL);
rdev->offchan_radar_wdev = NULL; /* Release offchain ownership */
rdev_set_radar_background(rdev, NULL);
rdev->background_radar_wdev = NULL; /* Release offchain ownership */
__cfg80211_offchan_cac_event(rdev, wdev, &rdev->offchan_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
__cfg80211_background_cac_event(rdev, wdev,
&rdev->background_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
}

Просмотреть файл

@ -776,7 +776,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_MBSSID_CONFIG] =
NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
[NL80211_ATTR_RADAR_OFFCHAN] = { .type = NLA_FLAG },
[NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@ -9305,9 +9305,9 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
goto unlock;
}
if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN])) {
err = cfg80211_start_offchan_radar_detection(rdev, wdev,
&chandef);
if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
err = cfg80211_start_background_radar_detection(rdev, wdev,
&chandef);
goto unlock;
}

Просмотреть файл

@ -1396,17 +1396,17 @@ rdev_set_fils_aad(struct cfg80211_registered_device *rdev,
}
static inline int
rdev_set_radar_offchan(struct cfg80211_registered_device *rdev,
struct cfg80211_chan_def *chandef)
rdev_set_radar_background(struct cfg80211_registered_device *rdev,
struct cfg80211_chan_def *chandef)
{
struct wiphy *wiphy = &rdev->wiphy;
int ret;
if (!rdev->ops->set_radar_offchan)
if (!rdev->ops->set_radar_background)
return -EOPNOTSUPP;
trace_rdev_set_radar_offchan(wiphy, chandef);
ret = rdev->ops->set_radar_offchan(wiphy, chandef);
trace_rdev_set_radar_background(wiphy, chandef);
ret = rdev->ops->set_radar_background(wiphy, chandef);
trace_rdev_return_int(wiphy, ret);
return ret;

Просмотреть файл

@ -3677,7 +3677,7 @@ TRACE_EVENT(cfg80211_bss_color_notify,
__entry->color_bitmap)
);
TRACE_EVENT(rdev_set_radar_offchan,
TRACE_EVENT(rdev_set_radar_background,
TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
TP_ARGS(wiphy, chandef),