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nl80211: Add the switch_color() handler for BSS color changes

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To start the CCA process we need to send NL80211_CMD_COLOR_CHANGE to the
kernel. This commit adds the required code.

Tested-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
This commit is contained in:
John Crispin 2022-03-21 12:10:33 +01:00 committed by Jouni Malinen
parent 86bd90eb37
commit 399d6e64d9
1 changed files with 84 additions and 0 deletions
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84
src/drivers/driver_nl80211.c
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@ -9955,6 +9955,87 @@ error:
} }
#ifdef CONFIG_IEEE80211AX
static int nl80211_switch_color(void *priv, struct cca_settings *settings)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nlattr *beacon_cca;
struct nl_msg *msg;
int ret = -ENOBUFS;
wpa_printf(MSG_DEBUG,
"nl80211: Color change request (cca_count=%u color=%d)",
settings->cca_count, settings->cca_color);
if (drv->nlmode != NL80211_IFTYPE_AP)
return -EOPNOTSUPP;
if (!settings->beacon_cca.tail)
return -EINVAL;
if (settings->beacon_cca.tail_len <= settings->counter_offset_beacon ||
settings->beacon_cca.tail[settings->counter_offset_beacon] !=
settings->cca_count)
return -EINVAL;
if (settings->beacon_cca.probe_resp &&
(settings->beacon_cca.probe_resp_len <=
settings->counter_offset_presp ||
settings->beacon_cca.probe_resp[settings->counter_offset_presp] !=
settings->cca_count))
return -EINVAL;
msg = nl80211_bss_msg(bss, 0, NL80211_CMD_COLOR_CHANGE_REQUEST);
if (!msg ||
nla_put_u8(msg, NL80211_ATTR_COLOR_CHANGE_COUNT,
settings->cca_count) ||
nla_put_u8(msg, NL80211_ATTR_COLOR_CHANGE_COLOR,
settings->cca_color))
goto error;
/* beacon_after params */
ret = set_beacon_data(msg, &settings->beacon_after);
if (ret)
goto error;
/* beacon_csa params */
beacon_cca = nla_nest_start(msg, NL80211_ATTR_COLOR_CHANGE_ELEMS);
if (!beacon_cca) {
ret = -ENOBUFS;
goto error;
}
ret = set_beacon_data(msg, &settings->beacon_cca);
if (ret)
goto error;
if (nla_put_u16(msg, NL80211_ATTR_CNTDWN_OFFS_BEACON,
settings->counter_offset_beacon) ||
(settings->beacon_cca.probe_resp &&
nla_put_u16(msg, NL80211_ATTR_CNTDWN_OFFS_PRESP,
settings->counter_offset_presp))) {
ret = -ENOBUFS;
goto error;
}
nla_nest_end(msg, beacon_cca);
ret = send_and_recv_msgs(drv, msg, NULL, NULL, NULL, NULL);
if (ret) {
wpa_printf(MSG_DEBUG,
"nl80211: switch_color failed err=%d (%s)",
ret, strerror(-ret));
}
return ret;
error:
nlmsg_free(msg);
wpa_printf(MSG_DEBUG, "nl80211: Could not build color switch request");
return ret;
}
#endif /* CONFIG_IEEE80211AX */
static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr, static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
u8 user_priority, u16 admitted_time) u8 user_priority, u16 admitted_time)
{ {
@ -12249,6 +12330,9 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.get_survey = wpa_driver_nl80211_get_survey, .get_survey = wpa_driver_nl80211_get_survey,
.status = wpa_driver_nl80211_status, .status = wpa_driver_nl80211_status,
.switch_channel = nl80211_switch_channel, .switch_channel = nl80211_switch_channel,
#ifdef CONFIG_IEEE80211AX
.switch_color = nl80211_switch_color,
#endif /* CONFIG_IEEE80211AX */
#ifdef ANDROID_P2P #ifdef ANDROID_P2P
.set_noa = wpa_driver_set_p2p_noa, .set_noa = wpa_driver_set_p2p_noa,
.get_noa = wpa_driver_get_p2p_noa, .get_noa = wpa_driver_get_p2p_noa,