the callbacks are a copy of the 'channel_switch' callback
as they essentially need the same data
Signed-off-by: Omer Dagan <omer.dagan@xxxxxxxxxxx>
---
src/ap/drv_callbacks.c | 84 ++++++++++++++++++++++++++++++
src/drivers/driver_nl80211_event.c | 67 ++++++++++++++++++++++++
2 files changed, 151 insertions(+)
diff --git a/src/ap/drv_callbacks.c b/src/ap/drv_callbacks.c
index cf01854e1..97620e2ba 100644
--- a/src/ap/drv_callbacks.c
+++ b/src/ap/drv_callbacks.c
@@ -738,6 +738,90 @@ void hostapd_event_sta_opmode_changed(struct hostapd_data *hapd, const u8 *addr,
}
+void hostapd_event_ch_switch_started(struct hostapd_data *hapd, int freq, int ht,
+ int offset, int width, int cf1, int cf2)
+{
+ /* TODO: If OCV is enabled deauth STAs that don't perform a SA Query */
+
+#ifdef NEED_AP_MLME
+ int channel, chwidth, is_dfs;
+ u8 seg0_idx = 0, seg1_idx = 0;
+ size_t i;
+
+ hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_INFO,
+ "driver starting channel switch: freq=%d, ht=%d, vht_ch=0x%x, offset=%d, width=%d (%s), cf1=%d, cf2=%d",
+ freq, ht, hapd->iconf->ch_switch_vht_config, offset,
+ width, channel_width_to_string(width), cf1, cf2);
+
+ hapd->iface->freq = freq;
+
+ channel = hostapd_hw_get_channel(hapd, freq);
+ if (!channel) {
+ hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
+ HOSTAPD_LEVEL_WARNING,
+ "driver switched to bad channel!");
+ }
+
+ switch (width) {
+ case CHAN_WIDTH_80:
+ chwidth = VHT_CHANWIDTH_80MHZ;
+ break;
+ case CHAN_WIDTH_80P80:
+ chwidth = VHT_CHANWIDTH_80P80MHZ;
+ break;
+ case CHAN_WIDTH_160:
+ chwidth = VHT_CHANWIDTH_160MHZ;
+ break;
+ case CHAN_WIDTH_20_NOHT:
+ case CHAN_WIDTH_20:
+ case CHAN_WIDTH_40:
+ default:
+ chwidth = VHT_CHANWIDTH_USE_HT;
+ break;
+ }
+
+ switch (hapd->iface->current_mode->mode) {
+ case HOSTAPD_MODE_IEEE80211A:
+ if (cf1 > 5000)
+ seg0_idx = (cf1 - 5000) / 5;
+ if (cf2 > 5000)
+ seg1_idx = (cf2 - 5000) / 5;
+ break;
+ default:
+ ieee80211_freq_to_chan(cf1, &seg0_idx);
+ ieee80211_freq_to_chan(cf2, &seg1_idx);
+ break;
+ }
+
+ hapd->iconf->channel = channel;
+ hapd->iconf->ieee80211n = ht;
+ if (!ht) {
+ hapd->iconf->ieee80211ac = 0;
+ } else if (hapd->iconf->ch_switch_vht_config) {
+ /* CHAN_SWITCH VHT config */
+ if (hapd->iconf->ch_switch_vht_config &
+ CH_SWITCH_VHT_ENABLED)
+ hapd->iconf->ieee80211ac = 1;
+ else if (hapd->iconf->ch_switch_vht_config &
+ CH_SWITCH_VHT_DISABLED)
+ hapd->iconf->ieee80211ac = 0;
+ }
+ hapd->iconf->ch_switch_vht_config = 0;
+
+ hapd->iconf->secondary_channel = offset;
+ hapd->iconf->vht_oper_chwidth = chwidth;
+ hapd->iconf->vht_oper_centr_freq_seg0_idx = seg0_idx;
+ hapd->iconf->vht_oper_centr_freq_seg1_idx = seg1_idx;
+
+ is_dfs = ieee80211_is_dfs(freq, hapd->iface->hw_features,
+ hapd->iface->num_hw_features);
+
+ wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH_STARTED
+ "freq=%d dfs=%d", freq, is_dfs);
+
+#endif /* NEED_AP_MLME */
+}
void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
int offset, int width, int cf1, int cf2)
{
diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index ffddd94d2..caae814f1 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -528,6 +528,73 @@ static int calculate_chan_offset(int width, int freq, int cf1, int cf2)
return (abs(freq - freq1) / 20) % 2 == 0 ? 1 : -1;
}
+static void mlme_event_ch_switch_started(struct wpa_driver_nl80211_data *drv,
+ struct nlattr *ifindex, struct nlattr *freq,
+ struct nlattr *type, struct nlattr *bw,
+ struct nlattr *cf1, struct nlattr *cf2)
+{
+ struct i802_bss *bss;
+ union wpa_event_data data;
+ int ht_enabled = 1;
+ int chan_offset = 0;
+ int ifidx;
+
+ wpa_printf(MSG_DEBUG, "nl80211: Channel switch started event");
+
+ if (!freq)
+ return;
+
+ ifidx = nla_get_u32(ifindex);
+ bss = get_bss_ifindex(drv, ifidx);
+ if (bss == NULL) {
+ wpa_printf(MSG_WARNING, "nl80211: Unknown ifindex (%d) for channel switch started, ignoring",
+ ifidx);
+ return;
+ }
+
+ if (type) {
+ enum nl80211_channel_type ch_type = nla_get_u32(type);
+
+ wpa_printf(MSG_DEBUG, "nl80211: Channel type: %d", ch_type);
+ switch (ch_type) {
+ case NL80211_CHAN_NO_HT:
+ ht_enabled = 0;
+ break;
+ case NL80211_CHAN_HT20:
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ chan_offset = 1;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ chan_offset = -1;
+ break;
+ }
+ } else if (bw && cf1) {
+ /* This can happen for example with VHT80 ch switch */
+ chan_offset = calculate_chan_offset(nla_get_u32(bw),
+ nla_get_u32(freq),
+ nla_get_u32(cf1),
+ cf2 ? nla_get_u32(cf2) : 0);
+ } else {
+ wpa_printf(MSG_WARNING, "nl80211: Unknown secondary channel information - following channel definition calculations may fail");
+ }
+
+ os_memset(&data, 0, sizeof(data));
+ data.ch_switch.freq = nla_get_u32(freq);
+ data.ch_switch.ht_enabled = ht_enabled;
+ data.ch_switch.ch_offset = chan_offset;
+ if (bw)
+ data.ch_switch.ch_width = convert2width(nla_get_u32(bw));
+ if (cf1)
+ data.ch_switch.cf1 = nla_get_u32(cf1);
+ if (cf2)
+ data.ch_switch.cf2 = nla_get_u32(cf2);
+
+ bss->freq = data.ch_switch.freq;
+ drv->assoc_freq = data.ch_switch.freq;
+
+ wpa_supplicant_event(bss->ctx, EVENT_CH_SWITCH_STARTED, &data);
+}
static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
struct nlattr *ifindex, struct nlattr *freq,
--
2.17.1
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