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wifi: mac80211: handle DFS per link

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In order to support DFS with MLO, handle the link ID now passed from
cfg80211, adjust the code to do everything per link and call the
notifications to cfg80211 correctly.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-7-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Aditya Kumar Singh 2024-09-06 12:14:24 +05:30 committed by Johannes Berg
parent 81f67d60eb
commit d74380ee99
3 changed files with 48 additions and 18 deletions
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30
net/mac80211/cfg.c
View File

@ -3467,6 +3467,7 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_chan_req chanreq = { .oper = *chandef };
struct ieee80211_local *local = sdata->local;
struct ieee80211_link_data *link_data;
int err;
lockdep_assert_wiphy(local->hw.wiphy);
@ -3474,16 +3475,20 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy,
if (!list_empty(&local->roc_list) || local->scanning)
return -EBUSY;
/* whatever, but channel contexts should not complain about that one */
sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
sdata->deflink.needed_rx_chains = local->rx_chains;
link_data = sdata_dereference(sdata->link[link_id], sdata);
if (!link_data)
return -ENOLINK;
err = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
/* whatever, but channel contexts should not complain about that one */
link_data->smps_mode = IEEE80211_SMPS_OFF;
link_data->needed_rx_chains = local->rx_chains;
err = ieee80211_link_use_channel(link_data, &chanreq,
IEEE80211_CHANCTX_SHARED);
if (err)
return err;
wiphy_delayed_work_queue(wiphy, &sdata->deflink.dfs_cac_timer_work,
wiphy_delayed_work_queue(wiphy, &link_data->dfs_cac_timer_work,
msecs_to_jiffies(cac_time_ms));
return 0;
@ -3494,16 +3499,21 @@ static void ieee80211_end_cac(struct wiphy *wiphy,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_link_data *link_data;
lockdep_assert_wiphy(local->hw.wiphy);
list_for_each_entry(sdata, &local->interfaces, list) {
wiphy_delayed_work_cancel(wiphy,
&sdata->deflink.dfs_cac_timer_work);
link_data = sdata_dereference(sdata->link[link_id], sdata);
if (!link_data)
continue;
if (sdata->wdev.links[0].cac_started) {
ieee80211_link_release_channel(&sdata->deflink);
sdata->wdev.links[0].cac_started = false;
wiphy_delayed_work_cancel(wiphy,
&link_data->dfs_cac_timer_work);
if (sdata->wdev.links[link_id].cac_started) {
ieee80211_link_release_channel(link_data);
sdata->wdev.links[link_id].cac_started = false;
}
}
}

10
net/mac80211/link.c
View File

@ -77,6 +77,16 @@ void ieee80211_link_stop(struct ieee80211_link_data *link)
&link->color_change_finalize_work);
wiphy_work_cancel(link->sdata->local->hw.wiphy,
&link->csa.finalize_work);
if (link->sdata->wdev.links[link->link_id].cac_started) {
wiphy_delayed_work_cancel(link->sdata->local->hw.wiphy,
&link->dfs_cac_timer_work);
cfg80211_cac_event(link->sdata->dev,
&link->conf->chanreq.oper,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL, link->link_id);
}
ieee80211_link_release_channel(link);
}

26
net/mac80211/util.c
View File

@ -3471,20 +3471,30 @@ void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata;
struct cfg80211_chan_def chandef;
struct ieee80211_link_data *link;
unsigned int link_id;
lockdep_assert_wiphy(local->hw.wiphy);
list_for_each_entry(sdata, &local->interfaces, list) {
wiphy_delayed_work_cancel(local->hw.wiphy,
&sdata->deflink.dfs_cac_timer_work);
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS;
link_id++) {
link = sdata_dereference(sdata->link[link_id],
sdata);
if (!link)
continue;
if (sdata->wdev.links[0].cac_started) {
chandef = sdata->vif.bss_conf.chanreq.oper;
ieee80211_link_release_channel(&sdata->deflink);
cfg80211_cac_event(sdata->dev,
&chandef,
wiphy_delayed_work_cancel(local->hw.wiphy,
&link->dfs_cac_timer_work);
if (!sdata->wdev.links[link_id].cac_started)
continue;
chandef = link->conf->chanreq.oper;
ieee80211_link_release_channel(link);
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL, 0);
GFP_KERNEL, link_id);
}
}
}