This patch adds mac80211 support to configure FILS discovery and
broadcast probe response in 6GHz for in-band discovery.
Changes include functions to store and retrieve FILS discovery,
broadcast probe response templates, and packet interval.
Signed-off-by: Aloka Dixit <alokad@xxxxxxxxxxxxxx>
---
include/net/mac80211.h | 17 ++++++++++++
net/mac80211/cfg.c | 57 ++++++++++++++++++++++++++++++++++++++
net/mac80211/ieee80211_i.h | 8 ++++++
net/mac80211/tx.c | 30 ++++++++++++++++++++
4 files changed, 112 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 78f7ce586287..768d6d9c47b6 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -317,6 +317,7 @@ struct ieee80211_vif_chanctx_switch {
* @BSS_CHANGED_TWT: TWT status changed
* @BSS_CHANGED_HE_OBSS_PD: OBSS Packet Detection status changed.
* @BSS_CHANGED_HE_BSS_COLOR: BSS Color has changed
+ * @BSS_CHANGED_FD_BCASTPRESP: FILS Discovery/Bcast probe resp status changed.
*
*/
enum ieee80211_bss_change {
@@ -350,6 +351,7 @@ enum ieee80211_bss_change {
BSS_CHANGED_TWT = 1<<27,
BSS_CHANGED_HE_OBSS_PD = 1<<28,
BSS_CHANGED_HE_BSS_COLOR = 1<<29,
+ BSS_CHANGED_FD_BCASTPRESP = 1<<30,
/* when adding here, make sure to change ieee80211_reconfig */
};
@@ -607,6 +609,7 @@ struct ieee80211_ftm_responder_params {
* @he_oper: HE operation information of the AP we are connected to
* @he_obss_pd: OBSS Packet Detection parameters.
* @he_bss_color: BSS coloring settings, if BSS supports HE
+ * @fd_bcastpresp: FILS discovery and broadcast probe response configuration
*/
struct ieee80211_bss_conf {
const u8 *bssid;
@@ -674,6 +677,7 @@ struct ieee80211_bss_conf {
} he_oper;
struct ieee80211_he_obss_pd he_obss_pd;
struct cfg80211_he_bss_color he_bss_color;
+ struct cfg80211_fd_bcastpresp fd_bcastpresp;
};
/**
@@ -6554,4 +6558,17 @@ u32 ieee80211_calc_tx_airtime(struct ieee80211_hw *hw,
*/
bool ieee80211_set_hw_80211_encap(struct ieee80211_vif *vif, bool enable);
+/**
+ * ieee80211_get_fd_bcastpresp_tmpl - Get FILS disc/Bcast probe resp template.
+ * @hw: pointer obtained from ieee80211_alloc_hw().
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @config: 1-FILS discovery, 2-Broadcast probe response.
+ *
+ * The driver is responsible for freeing the returned skb.
+ *
+ * Return: FILS discovery/broadcast probe response template. %NULL on error.
+ */
+struct sk_buff *ieee80211_get_fd_bcastpresp_tmpl(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u8 config);
#endif /* MAC80211_H */
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 548a384b0509..234f2610256c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -837,6 +837,43 @@ static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
return 0;
}
+static int ieee80211_set_fd_bcastpresp(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_ap_settings *params)
+{
+ struct fd_bcastpresp *new, *old = NULL;
+ struct cfg80211_fd_bcastpresp *cfg;
+ struct cfg80211_beacon_data *bcn = ¶ms->beacon;
+
+ cfg = &sdata->vif.bss_conf.fd_bcastpresp;
+ cfg->type = params->fd_bcastpresp.type;
+ cfg->interval = params->fd_bcastpresp.interval;
+
+ if (cfg->type == CFG80211_TYPE_FILS_DISCOVERY && bcn->fils_disc_len) {
+ new = kzalloc(sizeof(*new) + bcn->fils_disc_len, GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+ new->len = bcn->fils_disc_len;
+ memcpy(new->data, bcn->fils_disc, bcn->fils_disc_len);
+ old = sdata_dereference(sdata->u.ap.fils_disc, sdata);
+ rcu_assign_pointer(sdata->u.ap.fils_disc, new);
+ } else if (cfg->type == CFG80211_TYPE_BCAST_PROBE_RESP &&
+ bcn->bcast_presp_len) {
+ new = kzalloc(sizeof(*new) + bcn->bcast_presp_len, GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+ new->len = bcn->bcast_presp_len;
+ memcpy(new->data, bcn->bcast_presp,
+ bcn->bcast_presp_len);
+ old = sdata_dereference(sdata->u.ap.bcast_presp, sdata);
+ rcu_assign_pointer(sdata->u.ap.bcast_presp, new);
+ }
+
+ if (old)
+ kfree_rcu(old, rcu_head);
+
+ return 0;
+}
+
static int ieee80211_set_ftm_responder_params(
struct ieee80211_sub_if_data *sdata,
const u8 *lci, size_t lci_len,
@@ -1103,6 +1140,16 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
}
changed |= err;
+ if (params->fd_bcastpresp.type) {
+ err = ieee80211_set_fd_bcastpresp(sdata, params);
+ if (err < 0) {
+ ieee80211_vif_release_channel(sdata);
+ return err;
+ } else if (err == 0) {
+ changed |= BSS_CHANGED_FD_BCASTPRESP;
+ }
+ }
+
err = drv_start_ap(sdata->local, sdata);
if (err) {
old = sdata_dereference(sdata->u.ap.beacon, sdata);
@@ -1158,6 +1205,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
struct ieee80211_local *local = sdata->local;
struct beacon_data *old_beacon;
struct probe_resp *old_probe_resp;
+ struct fd_bcastpresp *old_bcast_probe_resp, *old_fils_disc;
struct cfg80211_chan_def chandef;
sdata_assert_lock(sdata);
@@ -1166,6 +1214,9 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
if (!old_beacon)
return -ENOENT;
old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
+ old_bcast_probe_resp = sdata_dereference(sdata->u.ap.bcast_presp,
+ sdata);
+ old_fils_disc = sdata_dereference(sdata->u.ap.fils_disc, sdata);
/* abort any running channel switch */
mutex_lock(&local->mtx);
@@ -1189,9 +1240,15 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
/* remove beacon and probe response */
RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
+ RCU_INIT_POINTER(sdata->u.ap.bcast_presp, NULL);
+ RCU_INIT_POINTER(sdata->u.ap.fils_disc, NULL);
kfree_rcu(old_beacon, rcu_head);
if (old_probe_resp)
kfree_rcu(old_probe_resp, rcu_head);
+ if (old_bcast_probe_resp)
+ kfree_rcu(old_bcast_probe_resp, rcu_head);
+ if (old_fils_disc)
+ kfree_rcu(old_fils_disc, rcu_head);
kfree(sdata->vif.bss_conf.ftmr_params);
sdata->vif.bss_conf.ftmr_params = NULL;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 8cbae66b5cdb..f9c77dbeb29a 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -270,6 +270,12 @@ struct probe_resp {
u8 data[0];
};
+struct fd_bcastpresp {
+ struct rcu_head rcu_head;
+ int len;
+ u8 data[0];
+};
+
struct ps_data {
/* yes, this looks ugly, but guarantees that we can later use
* bitmap_empty :)
@@ -285,6 +291,8 @@ struct ps_data {
struct ieee80211_if_ap {
struct beacon_data __rcu *beacon;
struct probe_resp __rcu *probe_resp;
+ struct fd_bcastpresp __rcu *bcast_presp;
+ struct fd_bcastpresp __rcu *fils_disc;
/* to be used after channel switch. */
struct cfg80211_beacon_data *next_beacon;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 6dad67eb60b2..6dacd58d956d 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -4984,6 +4984,36 @@ struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_proberesp_get);
+struct sk_buff *ieee80211_get_fd_bcastpresp_tmpl(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u8 config)
+{
+ struct sk_buff *skb = NULL;
+ struct fd_bcastpresp *tmpl = NULL;
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ return NULL;
+
+ rcu_read_lock();
+
+ if (config == CFG80211_TYPE_FILS_DISCOVERY)
+ tmpl = rcu_dereference(sdata->u.ap.fils_disc);
+ else if (config == CFG80211_TYPE_BCAST_PROBE_RESP)
+ tmpl = rcu_dereference(sdata->u.ap.bcast_presp);
+
+ if (!tmpl || !tmpl->len)
+ goto out;
+
+ skb = dev_alloc_skb(tmpl->len);
+ if (skb)
+ skb_put_data(skb, tmpl->data, tmpl->len);
+out:
+ rcu_read_unlock();
+ return skb;
+}
+EXPORT_SYMBOL(ieee80211_get_fd_bcastpresp_tmpl);
+
struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
--
2.25.0
