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authorVictor Goldenshtein <victorg@ti.com>2011-11-21 17:50:10 +0200
committerArik Nemtsov <arik@wizery.com>2012-09-13 14:53:28 +0300
commitfae6f45ba73ad0045bfbcaea8ffbf92ac8ee6490 (patch)
treede55de210db0d1555746de710b92f05cf60fc139 /src
parentff0a677405533513777ed413abff97483f5fda6d (diff)
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nl80211: add channel switch ability to AP & GO (INTERNAL)
Implement AP channel switch command. Handle channel switch request and channel switch complete events. Signed-hostap: Victor Goldenshtein <victorg@ti.com>
Diffstat (limited to 'src')
-rw-r--r--src/drivers/driver_nl80211.c73
1 files changed, 69 insertions, 4 deletions
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 35a818f..a1a09a5 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -1217,13 +1217,14 @@ static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
- struct nlattr *freq, struct nlattr *type)
+ struct nlattr *freq, struct nlattr *type,
+ enum wpa_event_type event)
{
union wpa_event_data data;
int ht_enabled = 1;
int chan_offset = 0;
- wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
+ wpa_printf(MSG_INFO, "nl80211: Channel switch event");
if (!freq || !type)
return;
@@ -1246,7 +1247,7 @@ static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
data.ch_switch.ht_enabled = ht_enabled;
data.ch_switch.ch_offset = chan_offset;
- wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
+ wpa_supplicant_event(drv->ctx, event, &data);
}
@@ -2110,6 +2111,22 @@ static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
}
+static void nl80211_req_ch_sw_event(struct wpa_driver_nl80211_data *drv,
+ struct nlattr **tb)
+{
+ union wpa_event_data data;
+
+ if (!tb[NL80211_ATTR_WIPHY_FREQ])
+ return;
+
+ os_memset(&data, 0, sizeof(data));
+ data.ch_switch.freq = nla_get_u16(tb[NL80211_ATTR_WIPHY_FREQ]);
+
+ wpa_printf(MSG_DEBUG, "nl80211: Requst to switch to %d freq",
+ data.ch_switch.freq);
+
+ wpa_supplicant_event(drv->ctx, EVENT_REQ_CH_SW, &data);
+}
static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
int wds)
@@ -2196,7 +2213,11 @@ static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
break;
case NL80211_CMD_CH_SWITCH_NOTIFY:
mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ],
- tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
+ tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
+ EVENT_CH_SWITCH);
+ break;
+ case NL80211_CMD_REQ_CH_SW:
+ nl80211_req_ch_sw_event(drv, tb);
break;
case NL80211_CMD_DISCONNECT:
mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
@@ -9466,6 +9487,49 @@ static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
}
+static int nl80211_ap_channel_switch(void *priv,
+ struct hostapd_channel_switch *params)
+{
+ struct i802_bss *bss = priv;
+ struct wpa_driver_nl80211_data *drv = bss->drv;
+ struct nl_msg *msg;
+ int ret;
+
+ wpa_printf(MSG_INFO, "nl80211: Channel switch, "
+ "ch_switch_count = %d, tx_block = %d, "
+ "freq = %d, post_switch_block_tx = %d.",
+ params->ch_switch_count, params->tx_block,
+ params->freq, params->post_switch_block_tx);
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_AP_CH_SWITCH);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, params->ch_switch_count);
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
+
+ /* only HT20 is supported at this point */
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_HT20);
+
+ if (params->tx_block)
+ NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
+
+ if (params->post_switch_block_tx)
+ NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_POST_BLOCK_TX);
+
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == 0) {
+ bss->freq = params->freq;
+ return 0;
+ }
+ wpa_printf(MSG_DEBUG, "nl80211: Failed to channel switch: "
+ "%d (%s)", ret, strerror(-ret));
+nla_put_failure:
+ return -1;
+}
#ifdef CONFIG_TDLS
static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
@@ -9891,6 +9955,7 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.set_rekey_info = nl80211_set_rekey_info,
.poll_client = nl80211_poll_client,
.set_p2p_powersave = nl80211_set_p2p_powersave,
+ .hapd_channel_switch = nl80211_ap_channel_switch,
#ifdef CONFIG_TDLS
.send_tdls_mgmt = nl80211_send_tdls_mgmt,
.tdls_oper = nl80211_tdls_oper,