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hostapd: add ubus method for requesting link measurements

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Add a ubus method to request link-measurements from connected STAs.

In addition to the STAs address, the used and maximum transmit power can
be provided by the external process for the link-measurement. If they
are not provided, 0 is used as the default value.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2022-03-30 00:31:26 +02:00
parent 2ca5c3da04
commit 965aa33a18
1 changed files with 65 additions and 0 deletions
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65
package/network/services/hostapd/src/src/ap/ubus.c
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@ -1347,6 +1347,70 @@ hostapd_rrm_beacon_req(struct ubus_context *ctx, struct ubus_object *obj,
return 0;
}
enum {
LM_REQ_ADDR,
LM_REQ_TX_POWER_USED,
LM_REQ_TX_POWER_MAX,
__LM_REQ_MAX,
};
static const struct blobmsg_policy lm_req_policy[__LM_REQ_MAX] = {
[LM_REQ_ADDR] = { "addr", BLOBMSG_TYPE_STRING },
[LM_REQ_TX_POWER_USED] = { "tx-power-used", BLOBMSG_TYPE_INT32 },
[LM_REQ_TX_POWER_MAX] = { "tx-power-max", BLOBMSG_TYPE_INT32 },
};
static int
hostapd_rrm_lm_req(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *ureq, const char *method,
struct blob_attr *msg)
{
struct hostapd_data *hapd = container_of(obj, struct hostapd_data, ubus.obj);
struct blob_attr *tb[__LM_REQ_MAX];
struct wpabuf *buf;
u8 addr[ETH_ALEN];
int ret;
int8_t txp_used, txp_max;
txp_used = 0;
txp_max = 0;
blobmsg_parse(lm_req_policy, __LM_REQ_MAX, tb, blob_data(msg), blob_len(msg));
if (!tb[LM_REQ_ADDR])
return UBUS_STATUS_INVALID_ARGUMENT;
if (tb[LM_REQ_TX_POWER_USED])
txp_used = (int8_t) blobmsg_get_u32(tb[LM_REQ_TX_POWER_USED]);
if (tb[LM_REQ_TX_POWER_MAX])
txp_max = (int8_t) blobmsg_get_u32(tb[LM_REQ_TX_POWER_MAX]);
if (hwaddr_aton(blobmsg_data(tb[LM_REQ_ADDR]), addr))
return UBUS_STATUS_INVALID_ARGUMENT;
buf = wpabuf_alloc(5);
if (!buf)
return UBUS_STATUS_UNKNOWN_ERROR;
wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REQUEST);
wpabuf_put_u8(buf, 1);
/* TX-Power used */
wpabuf_put_u8(buf, txp_used);
/* Max TX Power */
wpabuf_put_u8(buf, txp_max);
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
if (ret < 0)
return -ret;
return 0;
}
#ifdef CONFIG_WNM_AP
@ -1604,6 +1668,7 @@ static const struct ubus_method bss_methods[] = {
UBUS_METHOD_NOARG("rrm_nr_list", hostapd_rrm_nr_list),
UBUS_METHOD("rrm_nr_set", hostapd_rrm_nr_set, nr_set_policy),
UBUS_METHOD("rrm_beacon_req", hostapd_rrm_beacon_req, beacon_req_policy),
UBUS_METHOD("link_measurement_req", hostapd_rrm_lm_req, lm_req_policy),
#ifdef CONFIG_WNM_AP
UBUS_METHOD("wnm_disassoc_imminent", hostapd_wnm_disassoc_imminent, wnm_disassoc_policy),
UBUS_METHOD("bss_transition_request", hostapd_bss_transition_request, bss_tr_policy),