hostapd: add support for passing CSA events from sta/mesh to AP interfaces
authorFelix Fietkau <nbd@nbd.name>
Mon, 28 Jan 2019 20:35:25 +0000 (21:35 +0100)
committerFelix Fietkau <nbd@nbd.name>
Tue, 29 Jan 2019 10:27:06 +0000 (11:27 +0100)
Fixes handling CSA when using AP+STA or AP+Mesh

Signed-off-by: Felix Fietkau <nbd@nbd.name>
package/network/services/hostapd/patches/370-ap_sta_support.patch
package/network/services/hostapd/patches/380-disable_ctrl_iface_mib.patch

index ecb9460..d93984a 100644 (file)
        char *confname;
        char *confanother;
  
+--- a/hostapd/ctrl_iface.c
++++ b/hostapd/ctrl_iface.c
+@@ -2328,6 +2328,11 @@ static int hostapd_ctrl_iface_chan_switc
+       if (ret)
+               return ret;
++      if (os_strstr(pos, " auto-ht")) {
++              settings.freq_params.ht_enabled = iface->conf->ieee80211n;
++              settings.freq_params.vht_enabled = iface->conf->ieee80211ac;
++      }
++
+       for (i = 0; i < iface->num_bss; i++) {
+               /* Save CHAN_SWITCH VHT config */
+--- a/src/ap/beacon.c
++++ b/src/ap/beacon.c
+@@ -1381,11 +1381,6 @@ int ieee802_11_set_beacon(struct hostapd
+       struct wpabuf *beacon, *proberesp, *assocresp;
+       int res, ret = -1;
+-      if (hapd->csa_in_progress) {
+-              wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
+-              return -1;
+-      }
+-
+       hapd->beacon_set_done = 1;
+       if (ieee802_11_build_ap_params(hapd, &params) < 0)
+--- a/src/drivers/driver.h
++++ b/src/drivers/driver.h
+@@ -4469,6 +4469,13 @@ enum wpa_event_type {
+       EVENT_CH_SWITCH,
+       /**
++       * EVENT_CH_SWITCH - AP or GO will switch channels soon
++       *
++       * Described in wpa_event_data.ch_switch
++       * */
++      EVENT_CH_SWITCH_STARTED,
++
++      /**
+        * EVENT_WNM - Request WNM operation
+        *
+        * This event can be used to request a WNM operation to be performed.
+@@ -5306,6 +5313,7 @@ union wpa_event_data {
+       /**
+        * struct ch_switch
++       * @count: countdown until channel switch
+        * @freq: Frequency of new channel in MHz
+        * @ht_enabled: Whether this is an HT channel
+        * @ch_offset: Secondary channel offset
+@@ -5314,6 +5322,7 @@ union wpa_event_data {
+        * @cf2: Center frequency 2
+        */
+       struct ch_switch {
++              int count;
+               int freq;
+               int ht_enabled;
+               int ch_offset;
+--- a/src/drivers/driver_nl80211_event.c
++++ b/src/drivers/driver_nl80211_event.c
+@@ -526,7 +526,8 @@ static int calculate_chan_offset(int wid
+ static void mlme_event_ch_switch(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 nlattr *cf1, struct nlattr *cf2,
++                               struct nlattr *count)
+ {
+       struct i802_bss *bss;
+       union wpa_event_data data;
+@@ -584,11 +585,15 @@ static void mlme_event_ch_switch(struct
+               data.ch_switch.cf1 = nla_get_u32(cf1);
+       if (cf2)
+               data.ch_switch.cf2 = nla_get_u32(cf2);
++      if (count)
++              data.ch_switch.count = nla_get_u32(count);
+       bss->freq = data.ch_switch.freq;
+       drv->assoc_freq = data.ch_switch.freq;
+-      wpa_supplicant_event(bss->ctx, EVENT_CH_SWITCH, &data);
++      wpa_supplicant_event(bss->ctx,
++                           count ? EVENT_CH_SWITCH_STARTED : EVENT_CH_SWITCH,
++                           &data);
+ }
+@@ -2446,6 +2451,7 @@ static void do_process_drv_event(struct
+                                  tb[NL80211_ATTR_PMK],
+                                  tb[NL80211_ATTR_PMKID]);
+               break;
++      case NL80211_CMD_CH_SWITCH_STARTED_NOTIFY:
+       case NL80211_CMD_CH_SWITCH_NOTIFY:
+               mlme_event_ch_switch(drv,
+                                    tb[NL80211_ATTR_IFINDEX],
+@@ -2453,7 +2459,8 @@ static void do_process_drv_event(struct
+                                    tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
+                                    tb[NL80211_ATTR_CHANNEL_WIDTH],
+                                    tb[NL80211_ATTR_CENTER_FREQ1],
+-                                   tb[NL80211_ATTR_CENTER_FREQ2]);
++                                   tb[NL80211_ATTR_CENTER_FREQ2],
++                                   tb[NL80211_ATTR_CH_SWITCH_COUNT]);
+               break;
+       case NL80211_CMD_DISCONNECT:
+               mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
+--- a/wpa_supplicant/events.c
++++ b/wpa_supplicant/events.c
+@@ -4026,6 +4026,60 @@ static void wpas_event_assoc_reject(stru
+ }
++static void
++supplicant_ch_switch_started(struct wpa_supplicant *wpa_s,
++                          union wpa_event_data *data)
++{
++      char buf[256];
++      size_t len = sizeof(buf);
++      char *cmd = NULL;
++      int width = 20;
++      int ret;
++
++      if (!wpa_s->hostapd)
++              return;
++
++      wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH
++              "count=%d freq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
++              data->ch_switch.count,
++              data->ch_switch.freq,
++              data->ch_switch.ht_enabled,
++              data->ch_switch.ch_offset,
++              channel_width_to_string(data->ch_switch.ch_width),
++              data->ch_switch.cf1,
++              data->ch_switch.cf2);
++
++      switch (data->ch_switch.ch_width) {
++      case CHAN_WIDTH_20_NOHT:
++      case CHAN_WIDTH_20:
++              width = 20;
++              break;
++      case CHAN_WIDTH_40:
++              width = 40;
++              break;
++      case CHAN_WIDTH_80:
++              width = 80;
++              break;
++      case CHAN_WIDTH_160:
++      case CHAN_WIDTH_80P80:
++              width = 160;
++              break;
++      }
++
++      asprintf(&cmd, "CHAN_SWITCH %d %d sec_channel_offset=%d center_freq1=%d center_freq2=%d, bandwidth=%d auto-ht\n",
++              data->ch_switch.count - 1,
++              data->ch_switch.freq,
++              data->ch_switch.ch_offset,
++              data->ch_switch.cf1,
++              data->ch_switch.cf2,
++              width);
++      ret = wpa_ctrl_request(wpa_s->hostapd, cmd, os_strlen(cmd), buf, &len, NULL);
++      free(cmd);
++
++      if (ret < 0)
++              wpa_printf(MSG_ERROR, "\nFailed to reload hostapd AP interfaces\n");
++}
++
+ void supplicant_event(void *ctx, enum wpa_event_type event,
+                     union wpa_event_data *data)
+ {
+@@ -4309,6 +4363,10 @@ void supplicant_event(void *ctx, enum wp
+                                      data->rx_from_unknown.wds);
+               break;
+ #endif /* CONFIG_AP */
++      case EVENT_CH_SWITCH_STARTED:
++              supplicant_ch_switch_started(wpa_s, data);
++              break;
++
+       case EVENT_CH_SWITCH:
+               if (!data || !wpa_s->current_ssid)
+                       break;
index e978fbc..2fe0334 100644 (file)
@@ -12,7 +12,7 @@
  else
 --- a/hostapd/ctrl_iface.c
 +++ b/hostapd/ctrl_iface.c
-@@ -2907,6 +2907,7 @@ static int hostapd_ctrl_iface_receive_pr
+@@ -2912,6 +2912,7 @@ static int hostapd_ctrl_iface_receive_pr
                                                      reply_size);
        } else if (os_strcmp(buf, "STATUS-DRIVER") == 0) {
                reply_len = hostapd_drv_status(hapd, reply, reply_size);
@@ -20,7 +20,7 @@
        } else if (os_strcmp(buf, "MIB") == 0) {
                reply_len = ieee802_11_get_mib(hapd, reply, reply_size);
                if (reply_len >= 0) {
-@@ -2948,6 +2949,7 @@ static int hostapd_ctrl_iface_receive_pr
+@@ -2953,6 +2954,7 @@ static int hostapd_ctrl_iface_receive_pr
        } else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
                reply_len = hostapd_ctrl_iface_sta_next(hapd, buf + 9, reply,
                                                        reply_size);