[PATCH v4 3/4] hostapd: ap: add AFC client support
Krishna Chaitanya
chaitanya.mgit at gmail.com
Sun Apr 14 10:18:43 PDT 2024
On Wed, Apr 10, 2024 at 7:05 PM Lorenzo Bianconi <lorenzo at kernel.org> wrote:
>
> Introduce Automated Frequency Coordination (AFC) support for UNII-5 and
> UNII-7 6GHz bands.
> AFC client will connect to AFCD providing AP related parameter for AFC
> coordinator (e.g. geolocation, supported frequencies, ..).
> AFC is required for Standard Power Devices (SPDs) to determine a lists
> of channels and EIRP/PSD powers that are available in the 6GHz spectrum.
> AFC hostapd client is tested with AFC DUT Test Harness [0].
>
> [0] https://github.com/Wi-FiTestSuite/AFC-DUT/tree/main
>
> Tested-by: Felix Fietkau <nbd at nbd.name>
> Tested-by: Allen Ye <allen.ye at mediatek.com>
> Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
> ---
> hostapd/Makefile | 8 +
> hostapd/config_file.c | 261 +++++++++++
> hostapd/defconfig | 3 +
> hostapd/hostapd.conf | 42 ++
> src/ap/afc.c | 978 ++++++++++++++++++++++++++++++++++++++++++
> src/ap/ap_config.c | 16 +
> src/ap/ap_config.h | 47 ++
> src/ap/hostapd.c | 16 +
> src/ap/hostapd.h | 45 ++
> src/ap/hw_features.c | 2 +
> 10 files changed, 1418 insertions(+)
> create mode 100644 src/ap/afc.c
>
> diff --git a/hostapd/Makefile b/hostapd/Makefile
> index ca4439234..78171025e 100644
> --- a/hostapd/Makefile
> +++ b/hostapd/Makefile
> @@ -104,6 +104,14 @@ CFLAGS += -DCONFIG_TAXONOMY
> OBJS += ../src/ap/taxonomy.o
> endif
>
> +ifdef CONFIG_IEEE80211AX
> +ifdef CONFIG_AFC
> +CFLAGS += -DCONFIG_AFC
> +OBJS += ../src/ap/afc.o
> +LIBS += -ljson-c
> +endif
> +endif
> +
> ifdef CONFIG_MODULE_TESTS
> CFLAGS += -DCONFIG_MODULE_TESTS
> OBJS += hapd_module_tests.o
> diff --git a/hostapd/config_file.c b/hostapd/config_file.c
> index 56b2df3ae..c674e8ef7 100644
> --- a/hostapd/config_file.c
> +++ b/hostapd/config_file.c
> @@ -1281,6 +1281,190 @@ static int hostapd_parse_he_srg_bitmap(u8 *bitmap, char *val)
> return 0;
> }
>
> +
> +#ifdef CONFIG_AFC
> +static int hostapd_afc_parse_cert_ids(struct hostapd_config *conf, char *pos)
> +{
> + struct cert_id *c = NULL;
> + int i, count = 0;
> +
> + while (pos && pos[0]) {
> + char *p;
> +
> + c = os_realloc_array(c, count + 1, sizeof(*c));
> + if (!c)
> + return -ENOMEM;
> +
> + i = count;
> + count++;
> +
> + p = os_strchr(pos, ':');
> + if (!p)
> + goto error;
> +
> + *p++ = '\0';
> + if (!p || !p[0])
> + goto error;
> +
> + c[i].rulset = os_malloc(os_strlen(pos) + 1);
> + if (!c[i].rulset)
> + goto error;
> +
> + os_strlcpy(c[i].rulset, pos, os_strlen(pos) + 1);
> + pos = p;
> + p = os_strchr(pos, ',');
> + if (p)
> + *p++ = '\0';
> +
> + c[i].id = os_malloc(os_strlen(pos) + 1);
> + if (!c[i].id)
> + goto error;
> +
> + os_strlcpy(c[i].id, pos, os_strlen(pos) + 1);
> + pos = p;
> + }
> +
> + conf->afc.n_cert_ids = count;
> + conf->afc.cert_ids = c;
> +
> + return 0;
> +
> +error:
> + for (i = 0; i < count; i++) {
> + os_free(c[i].rulset);
> + os_free(c[i].id);
> + }
> + os_free(c);
> +
> + return -ENOMEM;
> +}
> +
> +
> +static int hostapd_afc_parse_position_data(struct afc_linear_polygon **data,
> + unsigned int *n_linear_polygon_data,
> + char *pos)
> +{
> + struct afc_linear_polygon *d = NULL;
> + int i, count = 0;
> +
> + while (pos && pos[0]) {
> + char *p, *end;
> +
> + d = os_realloc_array(d, count + 1, sizeof(*d));
> + if (!d)
> + return -ENOMEM;
> +
> + i = count;
> + count++;
> +
> + p = os_strchr(pos, ':');
> + if (!p)
> + goto error;
> +
> + *p++ = '\0';
> + if (!p || !p[0])
> + goto error;
> +
> + d[i].longitude = strtod(pos, &end);
> + if (*end)
> + goto error;
> +
> + pos = p;
> + p = os_strchr(pos, ',');
> + if (p)
> + *p++ = '\0';
> +
> + d[i].latitude = strtod(pos, &end);
> + if (*end)
> + goto error;
> +
> + pos = p;
> + }
> +
> + *n_linear_polygon_data = count;
> + *data = d;
> +
> + return 0;
> +
> +error:
> + os_free(d);
> + return -ENOMEM;
> +}
> +
> +
> +static int hostapd_afc_parse_freq_range(struct hostapd_config *conf, char *pos)
> +{
> + struct afc_freq_range *f = NULL;
> + int i, count = 0;
> +
> + while (pos && pos[0]) {
> + char *p;
> +
> + f = os_realloc_array(f, count + 1, sizeof(*f));
> + if (!f)
> + return -ENOMEM;
> +
> + i = count;
> + count++;
> +
> + p = os_strchr(pos, ':');
> + if (!p)
> + goto error;
> +
> + *p++ = '\0';
> + if (!p || !p[0])
> + goto error;
> +
> + f[i].low_freq = atoi(pos);
> + pos = p;
> + p = os_strchr(pos, ',');
> + if (p)
> + *p++ = '\0';
> +
> + f[i].high_freq = atoi(pos);
> + pos = p;
> + }
> +
> + conf->afc.n_freq_range = count;
> + conf->afc.freq_range = f;
> +
> + return 0;
> +
> +error:
> + os_free(f);
> + return -ENOMEM;
> +}
> +
> +
> +static int hostapd_afc_parse_op_class(struct hostapd_config *conf, char *pos)
> +{
> + unsigned int *oc = NULL;
> + int i, count = 0;
> +
> + while (pos && pos[0]) {
> + char *p;
> +
> + oc = os_realloc_array(oc, count + 1, sizeof(*oc));
> + if (!oc)
> + return -ENOMEM;
> +
> + i = count;
> + count++;
> +
> + p = os_strchr(pos, ',');
> + if (p)
> + *p++ = '\0';
> +
> + oc[i] = atoi(pos);
> + pos = p;
> + }
> +
> + conf->afc.n_op_class = count;
> + conf->afc.op_class = oc;
> +
> + return 0;
> +}
> +#endif /* CONFIG_AFC */
> #endif /* CONFIG_IEEE80211AX */
>
>
> @@ -3862,6 +4046,83 @@ static int hostapd_config_fill(struct hostapd_config *conf,
> return 1;
> }
> bss->unsol_bcast_probe_resp_interval = val;
> +#ifdef CONFIG_AFC
> + } else if (os_strcmp(buf, "afcd_sock") == 0) {
> + conf->afc.socket = os_malloc(os_strlen(pos) + 1);
> + if (!conf->afc.socket)
> + return 1;
> +
> + os_strlcpy(conf->afc.socket, pos, os_strlen(pos) + 1);
> + } else if (os_strcmp(buf, "afc_request_version") == 0) {
> + conf->afc.request.version = os_malloc(os_strlen(pos) + 1);
> + if (!conf->afc.request.version)
> + return 1;
> +
> + os_strlcpy(conf->afc.request.version, pos, os_strlen(pos) + 1);
> + } else if (os_strcmp(buf, "afc_request_id") == 0) {
> + conf->afc.request.id = os_malloc(os_strlen(pos) + 1);
> + if (!conf->afc.request.id)
> + return 1;
> +
> + os_strlcpy(conf->afc.request.id, pos, os_strlen(pos) + 1);
> + } else if (os_strcmp(buf, "afc_serial_number") == 0) {
> + conf->afc.request.sn = os_malloc(os_strlen(pos) + 1);
> + if (!conf->afc.request.sn)
> + return 1;
> +
> + os_strlcpy(conf->afc.request.sn, pos, os_strlen(pos) + 1);
> + } else if (os_strcmp(buf, "afc_cert_ids") == 0) {
> + if (hostapd_afc_parse_cert_ids(conf, pos))
> + return 1;
> + } else if (os_strcmp(buf, "afc_location_type") == 0) {
> + conf->afc.location.type = atoi(pos);
> + if (conf->afc.location.type != ELLIPSE &&
> + conf->afc.location.type != LINEAR_POLYGON &&
> + conf->afc.location.type != RADIAL_POLYGON)
> + return 1;
> + } else if (os_strcmp(buf, "afc_linear_polygon") == 0) {
> + if (hostapd_afc_parse_position_data(
> + &conf->afc.location.linear_polygon_data,
> + &conf->afc.location.n_linear_polygon_data,
> + pos))
> + return 1;
> + } else if (os_strcmp(buf, "afc_radial_polygon") == 0) {
> + if (hostapd_afc_parse_position_data(
> + (struct afc_linear_polygon **)
> + &conf->afc.location.radial_polygon_data,
> + &conf->afc.location.n_radial_polygon_data,
> + pos))
> + return 1;
> + } else if (os_strcmp(buf, "afc_major_axis") == 0) {
> + conf->afc.location.major_axis = atoi(pos);
> + } else if (os_strcmp(buf, "afc_minor_axis") == 0) {
> + conf->afc.location.minor_axis = atoi(pos);
> + } else if (os_strcmp(buf, "afc_orientation") == 0) {
> + conf->afc.location.orientation = atoi(pos);
> + } else if (os_strcmp(buf, "afc_height") == 0) {
> + char *end;
> +
> + conf->afc.location.height = strtod(pos, &end);
> + if (*end)
> + return 1;
> + } else if (os_strcmp(buf, "afc_height_type") == 0) {
> + conf->afc.location.height_type = os_malloc(os_strlen(pos) + 1);
> + if (!conf->afc.location.height_type)
> + return 1;
> +
> + os_strlcpy(conf->afc.location.height_type, pos,
> + os_strlen(pos) + 1);
> + } else if (os_strcmp(buf, "afc_vertical_tolerance") == 0) {
> + conf->afc.location.vertical_tolerance = atoi(pos);
> + } else if (os_strcmp(buf, "afc_min_power") == 0) {
> + conf->afc.min_power = atoi(pos);
> + } else if (os_strcmp(buf, "afc_freq_range") == 0) {
> + if (hostapd_afc_parse_freq_range(conf, pos))
> + return 1;
> + } else if (os_strcmp(buf, "afc_op_class") == 0) {
> + if (hostapd_afc_parse_op_class(conf, pos))
> + return 1;
> +#endif /* CONFIG_AFC */
> } else if (os_strcmp(buf, "mbssid") == 0) {
> int mbssid = atoi(pos);
> if (mbssid < 0 || mbssid > ENHANCED_MBSSID_ENABLED) {
> diff --git a/hostapd/defconfig b/hostapd/defconfig
> index 550db697b..66bf894eb 100644
> --- a/hostapd/defconfig
> +++ b/hostapd/defconfig
> @@ -425,3 +425,6 @@ CONFIG_DPP2=y
>
> # Wi-Fi Aware unsynchronized service discovery (NAN USD)
> #CONFIG_NAN_USD=y
> +
> +# Enable Automated Frequency Coordination for 6GHz outdoor
> +#CONFIG_AFC=y
> diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
> index d80abcac0..0d10998af 100644
> --- a/hostapd/hostapd.conf
> +++ b/hostapd/hostapd.conf
> @@ -1005,6 +1005,48 @@ wmm_ac_vo_acm=0
> # Valid range: 0..20 TUs; default is 0 (disabled)
> #unsol_bcast_probe_resp_interval=0
>
> +##### Automated Frequency Coordination for 6GHz UNII-5 and UNII-7 bands #######
> +
> +# AFC daemon connection socket
> +#afcd_sock=/var/run/afcd.sock
> +
> +# AFC request identification parameters
> +#afc_request_version=1.1
> +#afc_request_id=11235813
> +#afc_serial_number=abcdefg
> +#afc_cert_ids=US_47_CFR_PART_15_SUBPART_E:CID000
> +#
> +# AFC location type:
> +# 0 = ellipse
> +# 1 = linear polygon
> +# 2 = radial polygon
> +#afc_location_type=0
> +#
> +# AFC ellipse or linear polygon coordinations
> +#afc_linear_polygon=-122.984157:37.425056
> +#
> +# AFC radial polygon coordinations
> +#afc_radial_polygon=118.8:92.76,76.44:87.456,98.56:123.33
> +#
> +# AFC ellipse major/minor axis and orientation
> +#afc_major_axis=100
> +#afc_minor_axis=50
> +#afc_orientation=70
> +#
> +# AFC device elevation parameters
> +#afc_height=3.0
> +#afc_height_type=AGL
> +#afc_vertical_tolerance=7
> +#
> +# AFC minimum desired TX power (dbm)
> +#afc_min_power=24
> +#
> +# AFC request frequency ranges
> +#afc_freq_range=5925:6425,6525:6875
> +#
> +# AFC request operation classes
> +#afc_op_class=131,132,133,134,136
> +
> ##### IEEE 802.11be related configuration #####################################
>
> #ieee80211be: Whether IEEE 802.11be (EHT) is enabled
> diff --git a/src/ap/afc.c b/src/ap/afc.c
> new file mode 100644
> index 000000000..40af3cb4a
> --- /dev/null
> +++ b/src/ap/afc.c
> @@ -0,0 +1,978 @@
> +/*
> + * Automated Frequency Coordination
> + * Copyright (c) 2024, Lorenzo Bianconi <lorenzo at kernel.org>
> + *
> + * This software may be distributed under the terms of the BSD license.
> + * See README for more details.
> + */
> +
> +#include <json-c/json.h>
> +#include <sys/un.h>
> +#include <time.h>
> +
> +#include "utils/includes.h"
> +#include "utils/common.h"
> +#include "utils/eloop.h"
> +#include "hostapd.h"
> +#include "acs.h"
> +#include "hw_features.h"
> +
> +#define HOSTAPD_AFC_RETRY_TIMEOUT 180
> +#define HOSTAPD_AFC_TIMEOUT 86400 /* 24h */
> +#define HOSTAPD_AFC_BUFSIZE 4096
With the afc-reply.json, the response is 4842 bytes, so, this needs to
be increased.
> +
> +static void hostapd_afc_timeout_handler(void *eloop_ctx, void *timeout_ctx);
> +
> +
> +static struct json_object *
> +hostapd_afc_build_location_request(struct hostapd_iface *iface)
> +{
> + struct json_object *location_obj, *center_obj, *ellipse_obj;
> + struct json_object *elevation_obj, *str_obj;
> + struct hostapd_config *iconf = iface->conf;
> + bool is_ap_indoor = he_reg_is_indoor(iconf->he_6ghz_reg_pwr_type);
> +
> + location_obj = json_object_new_object();
> + if (!location_obj)
> + return NULL;
> +
> + if (iconf->afc.location.type != LINEAR_POLYGON) {
> + struct afc_linear_polygon *lp =
> + &iconf->afc.location.linear_polygon_data[0];
> +
> + ellipse_obj = json_object_new_object();
> + if (!ellipse_obj)
> + goto error;
> +
> + center_obj = json_object_new_object();
> + if (!center_obj)
> + goto error;
> +
> + json_object_object_add(ellipse_obj, "center", center_obj);
> +
> + str_obj = json_object_new_double(lp->longitude);
If the config file doesn't have the entries, then these pointers NULL
and hostapd
crashes.
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(center_obj, "longitude", str_obj);
> + str_obj = json_object_new_double(lp->latitude);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(center_obj, "latitude", str_obj);
> + }
> +
> + switch (iconf->afc.location.type) {
> + case LINEAR_POLYGON: {
> + struct json_object *outer_boundary_obj;
> + int i;
> +
> + outer_boundary_obj = json_object_new_object();
> + if (!outer_boundary_obj)
> + goto error;
> +
> + json_object_object_add(location_obj, "linearPolygon",
> + outer_boundary_obj);
> + ellipse_obj = json_object_new_array();
> + if (!ellipse_obj)
> + goto error;
> +
> + json_object_object_add(outer_boundary_obj, "outerBoundary",
> + ellipse_obj);
> + for (i = 0;
> + i < iconf->afc.location.n_linear_polygon_data; i++) {
> + struct afc_linear_polygon *lp =
> + &iconf->afc.location.linear_polygon_data[i];
> + center_obj = json_object_new_object();
> + if (!center_obj)
> + goto error;
> +
> + json_object_array_add(ellipse_obj, center_obj);
> + str_obj = json_object_new_double(lp->longitude);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(center_obj, "longitude",
> + str_obj);
> + str_obj = json_object_new_double(lp->latitude);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(center_obj, "latitude",
> + str_obj);
> + }
> + break;
> + }
> + case RADIAL_POLYGON: {
> + struct json_object *outer_boundary_obj;
> + int i;
> +
> + json_object_object_add(location_obj, "radialPolygon",
> + ellipse_obj);
> +
> + outer_boundary_obj = json_object_new_array();
> + if (!outer_boundary_obj)
> + goto error;
> +
> + json_object_object_add(ellipse_obj, "outerBoundary",
> + outer_boundary_obj);
> + for (i = 0;
> + i < iconf->afc.location.n_radial_polygon_data; i++) {
> + struct afc_radial_polygon *rp =
> + &iconf->afc.location.radial_polygon_data[i];
> + struct json_object *angle_obj;
> +
> + angle_obj = json_object_new_object();
> + if (!angle_obj)
> + goto error;
> +
> + json_object_array_add(outer_boundary_obj, angle_obj);
> +
> + str_obj = json_object_new_double(rp->angle);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(angle_obj, "angle", str_obj);
> + str_obj = json_object_new_double(rp->length);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(angle_obj, "length", str_obj);
> + }
> + break;
> + }
> + case ELLIPSE:
> + default:
> + json_object_object_add(location_obj, "ellipse", ellipse_obj);
> +
> + str_obj = json_object_new_int(iconf->afc.location.major_axis);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(ellipse_obj, "majorAxis", str_obj);
> + str_obj = json_object_new_int(iconf->afc.location.minor_axis);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(ellipse_obj, "minorAxis", str_obj);
> + str_obj = json_object_new_int(iconf->afc.location.orientation);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(ellipse_obj, "orientation", str_obj);
> + break;
> + }
> +
> + elevation_obj = json_object_new_object();
> + if (!elevation_obj)
> + goto error;
> +
> + json_object_object_add(location_obj, "elevation",
> + elevation_obj);
> + str_obj = json_object_new_double(iconf->afc.location.height);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(elevation_obj, "height", str_obj);
> + str_obj = json_object_new_string(iconf->afc.location.height_type);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(elevation_obj, "heightType", str_obj);
> + str_obj = json_object_new_int(iconf->afc.location.vertical_tolerance);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(elevation_obj, "verticalUncertainty",
> + str_obj);
> + str_obj = json_object_new_int(is_ap_indoor);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(location_obj, "indoorDeployment", str_obj);
> +
> + return location_obj;
> +
> +error:
> + json_object_put(location_obj);
> + return NULL;
> +}
> +
> +
> +static struct json_object * hostapd_afc_get_opclass_chan_list(u8 op_class)
> +{
> + struct json_object *chan_list_obj, *str_obj;
> + const struct oper_class_map *oper_class;
> + int chan_offset, chan;
> +
> + oper_class = get_oper_class(NULL, op_class);
> + if (!oper_class)
> + return NULL;
> +
> + chan_list_obj = json_object_new_array();
> + if (!chan_list_obj)
> + return NULL;
> +
> + switch (op_class) {
> + case 132: /* 40MHz */
> + chan_offset = 2;
> + break;
> + case 133: /* 80MHz */
> + chan_offset = 6;
> + break;
> + case 134: /* 160MHz */
> + chan_offset = 14;
> + break;
> + default:
> + chan_offset = 0;
> + break;
> + }
> +
> + for (chan = oper_class->min_chan; chan <= oper_class->max_chan;
> + chan += oper_class->inc) {
> + str_obj = json_object_new_int(chan + chan_offset);
> + if (!str_obj) {
> + json_object_put(chan_list_obj);
> + return NULL;
> + }
> + json_object_array_add(chan_list_obj, str_obj);
> + }
> +
> + return chan_list_obj;
> +}
> +
> +
> +static struct json_object *
> +hostapd_afc_build_req_chan_list(struct hostapd_iface *iface)
> +{
> + struct json_object *op_class_list_obj, *str_obj;
> + struct hostapd_config *iconf = iface->conf;
> + int i;
> +
> + op_class_list_obj = json_object_new_array();
> + if (!op_class_list_obj)
> + return NULL;
> +
> + for (i = 0; i < iconf->afc.n_op_class; i++) {
> + struct json_object *op_class_obj, *chan_list_obj;
> + u8 op_class = iconf->afc.op_class[i];
> +
> + if (!is_6ghz_op_class(op_class))
> + continue;
> +
> + op_class_obj = json_object_new_object();
> + if (!op_class_obj)
> + goto error;
> +
> + json_object_array_add(op_class_list_obj, op_class_obj);
> + str_obj = json_object_new_int(op_class);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(op_class_obj, "globalOperatingClass",
> + str_obj);
> +
> + chan_list_obj = hostapd_afc_get_opclass_chan_list(op_class);
> + if (!chan_list_obj)
> + goto error;
> +
> + json_object_object_add(op_class_obj, "channelCfi",
> + chan_list_obj);
> + }
> +
> + return op_class_list_obj;
> +
> +error:
> + json_object_put(op_class_list_obj);
> + return NULL;
> +}
> +
> +
> +static struct json_object *
> +hostapd_afc_build_request(struct hostapd_iface *iface)
> +{
> + struct json_object *l1_obj, *l2_obj, *la1_obj, *la2_obj;
> + struct json_object *s2_obj, *str_obj, *location_obj;
> + struct hostapd_config *iconf = iface->conf;
> + struct json_object *op_class_list_obj;
> + int i;
> +
> + l1_obj = json_object_new_object();
> + if (!l1_obj)
> + return NULL;
> +
> + if (iconf->afc.request.version) {
> + str_obj = json_object_new_string(iconf->afc.request.version);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(l1_obj, "version", str_obj);
> + }
> +
> + la1_obj = json_object_new_array();
> + if (!la1_obj)
> + goto error;
> +
> + json_object_object_add(l1_obj, "availableSpectrumInquiryRequests",
> + la1_obj);
> + l2_obj = json_object_new_object();
> + if (!l2_obj)
> + goto error;
> +
> + json_object_array_add(la1_obj, l2_obj);
> + if (iconf->afc.request.id) {
> + str_obj = json_object_new_string(iconf->afc.request.id);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "requestId", str_obj);
> + }
> +
> + s2_obj = json_object_new_object();
> + if (!s2_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "deviceDescriptor", s2_obj);
> + if (iconf->afc.request.sn) {
> + str_obj = json_object_new_string(iconf->afc.request.sn);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(s2_obj, "serialNumber", str_obj);
> + }
> +
> + la2_obj = json_object_new_array();
> + if (!la2_obj)
> + goto error;
> +
> + json_object_object_add(s2_obj, "certificationId", la2_obj);
> + for (i = 0; i < iconf->afc.n_cert_ids; i++) {
> + struct json_object *obj;
> +
> + obj = json_object_new_object();
> + if (!obj)
> + goto error;
> +
> + json_object_array_add(la2_obj, obj);
> + str_obj =
> + json_object_new_string(iconf->afc.cert_ids[i].rulset);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(obj, "rulesetId", str_obj);
> + str_obj = json_object_new_string(iconf->afc.cert_ids[i].id);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(obj, "id", str_obj);
> + }
> +
> + location_obj = hostapd_afc_build_location_request(iface);
> + if (!location_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "location", location_obj);
> + str_obj = json_object_new_int(iconf->afc.min_power);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "minDesiredPower", str_obj);
> +
> + if (iconf->afc.n_freq_range) {
> + struct json_object *freq_obj;
> +
> + freq_obj = json_object_new_array();
> + if (!freq_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "inquiredFrequencyRange",
> + freq_obj);
> + for (i = 0; i < iconf->afc.n_freq_range; i++) {
> + struct afc_freq_range *fr = &iconf->afc.freq_range[i];
> + struct json_object *obj;
> +
> + obj = json_object_new_object();
> + if (!obj)
> + goto error;
> +
> + json_object_array_add(freq_obj, obj);
> + str_obj = json_object_new_int(fr->low_freq);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(obj, "lowFrequency", str_obj);
> + str_obj = json_object_new_int(fr->high_freq);
> + if (!str_obj)
> + goto error;
> +
> + json_object_object_add(obj, "highFrequency", str_obj);
> + }
> + }
> +
> + op_class_list_obj = hostapd_afc_build_req_chan_list(iface);
> + if (!op_class_list_obj)
> + goto error;
> +
> + json_object_object_add(l2_obj, "inquiredChannels", op_class_list_obj);
> +
> + wpa_printf(MSG_DEBUG, "Pending AFC request: %s",
> + json_object_get_string(l1_obj));
> +
> + return l1_obj;
> +
> +error:
> + json_object_put(l1_obj);
> +
> + return NULL;
> +}
> +
> +
> +static int
> +hostad_afc_parse_available_freq_info(struct hostapd_iface *iface,
> + struct json_object *reply_elem_obj)
> +{
> + struct afc_freq_range_elem *f = NULL;
> + struct json_object *obj;
> + int i, count = 0;
> +
> + if (!json_object_object_get_ex(reply_elem_obj,
> + "availableFrequencyInfo", &obj))
> + return 0;
> +
> + for (i = 0; i < json_object_array_length(obj); i++) {
> + struct json_object *range_elem_obj, *freq_range_obj;
> + struct json_object *high_freq_obj, *low_freq_obj;
> + struct json_object *max_psd_obj;
> +
> + range_elem_obj = json_object_array_get_idx(obj, i);
> + if (!range_elem_obj)
> + continue;
> +
> + if (!json_object_object_get_ex(range_elem_obj,
> + "frequencyRange",
> + &freq_range_obj))
> + continue;
> +
> + if (!json_object_object_get_ex(freq_range_obj,
> + "lowFrequency",
> + &low_freq_obj))
> + continue;
> +
> + if (!json_object_object_get_ex(freq_range_obj,
> + "highFrequency",
> + &high_freq_obj))
> + continue;
> +
> + if (!json_object_object_get_ex(range_elem_obj, "maxPsd",
> + &max_psd_obj) &&
> + !json_object_object_get_ex(range_elem_obj, "maxPSD",
> + &max_psd_obj))
> + continue;
> +
> + f = os_realloc_array(f, count + 1, sizeof(*f));
> + if (!f)
> + return -ENOMEM;
> +
> + f[count].low_freq = json_object_get_int(low_freq_obj);
> + f[count].high_freq = json_object_get_int(high_freq_obj);
> + f[count++].max_psd = json_object_get_int(max_psd_obj);
> + }
> + iface->afc.freq_range = f;
> + iface->afc.num_freq_range = count;
> +
> + return 0;
> +}
> +
> +
> +static int hostad_afc_update_chan_info(struct afc_chan_info_elem **chan_list,
> + int *chan_list_size, u8 op_class,
> + int center_chan, int power)
> +{
> + int num_low_subchan, ch, count = *chan_list_size;
> + struct afc_chan_info_elem *c = *chan_list;
> +
> + switch (op_class) {
> + case 132: /* 40MHz */
> + num_low_subchan = 2;
> + break;
> + case 133: /* 80MHz */
> + num_low_subchan = 6;
> + break;
> + case 134: /* 160MHz */
> + num_low_subchan = 14;
> + break;
> + default:
> + num_low_subchan = 0;
> + break;
> + }
> +
> + for (ch = center_chan - num_low_subchan;
> + ch <= center_chan + num_low_subchan; ch += 4) {
> + int i;
> +
> + for (i = 0; i < count; i++) {
> + if (c[i].chan == ch)
> + break;
> + }
> +
> + if (i == count) {
> + c = os_realloc_array(c, count + 1, sizeof(*c));
> + if (!c)
> + return -ENOMEM;
> +
> + c[count].chan = ch;
> + c[count++].power = power;
> + }
> + }
> +
> + *chan_list_size = count;
> + *chan_list = c;
> +
> + return 0;
> +}
> +
> +
> +static int
> +hostad_afc_parse_available_chan_info(struct hostapd_iface *iface,
> + struct json_object *reply_elem_obj)
> +{
> + struct afc_chan_info_elem *c = NULL;
> + struct json_object *obj;
> + int i, count = 0;
> +
> + if (!json_object_object_get_ex(reply_elem_obj,
> + "availableChannelInfo", &obj))
> + return 0;
> +
> + for (i = 0; i < json_object_array_length(obj); i++) {
> + struct json_object *range_elem_obj, *op_class_obj;
> + struct json_object *chan_cfi_obj, *max_eirp_obj;
> + int ch, op_class;
> +
> + range_elem_obj = json_object_array_get_idx(obj, i);
> + if (!range_elem_obj)
> + continue;
> +
> + if (!json_object_object_get_ex(range_elem_obj,
> + "globalOperatingClass",
> + &op_class_obj))
> + continue;
> +
> + if (!json_object_object_get_ex(range_elem_obj, "maxEirp",
> + &max_eirp_obj))
> + continue;
> +
> + if (!json_object_object_get_ex(range_elem_obj, "channelCfi",
> + &chan_cfi_obj))
> + continue;
> +
> + op_class = json_object_get_int(op_class_obj);
> + for (ch = 0;
> + ch < json_object_array_length(chan_cfi_obj); ch++) {
> + struct json_object *pwr_obj;
> + struct json_object *ch_obj;
> + int channel, power;
> +
> + ch_obj = json_object_array_get_idx(chan_cfi_obj, ch);
> + if (!ch_obj)
> + continue;
> +
> + pwr_obj = json_object_array_get_idx(max_eirp_obj, ch);
> + if (!pwr_obj)
> + continue;
> +
> + channel = json_object_get_int(ch_obj);
> + power = json_object_get_int(pwr_obj);
> +
> + hostad_afc_update_chan_info(&c, &count, op_class,
> + channel, power);
> + }
> + iface->afc.chan_info_list = c;
> + iface->afc.num_chan_info = count;
> + }
> +
> + return 0;
> +}
> +
> +
> +static int hostad_afc_get_timeout(struct json_object *obj)
> +{
> + time_t t, now;
> + struct tm tm;
> +
> + if (sscanf(json_object_get_string(obj), "%d-%d-%dT%d:%d:%dZ",
> + &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &tm.tm_hour,
> + &tm.tm_min, &tm.tm_sec) <= 0)
> + return HOSTAPD_AFC_TIMEOUT;
> +
> + tm.tm_year -= 1900;
> + tm.tm_mon -= 1;
> + tm.tm_isdst = -1;
> + t = mktime(&tm);
> + time(&now);
> +
> + return now > t ? HOSTAPD_AFC_RETRY_TIMEOUT : (t - now) * 80 / 100;
> +}
> +
> +
> +static int hostapd_afc_parse_reply(struct hostapd_iface *iface, char *reply)
> +{
> + struct json_object *payload_obj, *reply_obj, *version_obj;
> + struct hostapd_config *iconf = iface->conf;
> + int i, request_timeout = -1, ret = -EINVAL;
> +
> + wpa_printf(MSG_DEBUG, "Received AFC reply: %s", reply);
> + payload_obj = json_tokener_parse(reply);
> + if (!payload_obj)
> + return -EINVAL;
This function could use some error logs, esp. as its related to parsing.
> +
> + if (!json_object_object_get_ex(payload_obj, "version", &version_obj))
> + return -EINVAL;
> +
> + if (iconf->afc.request.version &&
> + os_strcmp(iconf->afc.request.version,
> + json_object_get_string(version_obj)))
> + return -EINVAL;
> +
> + if (!json_object_object_get_ex(payload_obj,
> + "availableSpectrumInquiryResponses",
> + &reply_obj))
> + return -EINVAL;
> +
> + for (i = 0; i < json_object_array_length(reply_obj); i++) {
> + struct json_object *reply_elem_obj, *obj, *status_obj;
> + int j, status = -EINVAL;
> +
> + reply_elem_obj = json_object_array_get_idx(reply_obj, i);
> + if (!reply_elem_obj)
> + continue;
> +
> + if (!json_object_object_get_ex(reply_elem_obj, "requestId",
> + &obj))
> + continue;
> +
> + if (iconf->afc.request.id &&
> + os_strcmp(iconf->afc.request.id,
> + json_object_get_string(obj)))
> + continue;
> +
> + if (!json_object_object_get_ex(reply_elem_obj, "rulesetId",
> + &obj))
> + continue;
> +
> + for (j = 0; j < iconf->afc.n_cert_ids; j++) {
> + if (!os_strcmp(iconf->afc.cert_ids[j].rulset,
> + json_object_get_string(obj)))
> + break;
> + }
> +
> + if (j == iconf->afc.n_cert_ids)
> + continue;
> +
> + if (!json_object_object_get_ex(reply_elem_obj, "response",
> + &obj))
> + continue;
> +
> + if (json_object_object_get_ex(obj, "shortDescription",
> + &status_obj))
> + wpa_printf(MSG_DEBUG, "AFC reply element %d: %s",
> + i, json_object_get_string(status_obj));
> +
> + if (json_object_object_get_ex(obj, "responseCode",
> + &status_obj))
> + status = json_object_get_int(status_obj);
> +
> + if (status < 0)
> + continue;
> +
> + if (hostad_afc_parse_available_freq_info(iface,
> + reply_elem_obj) ||
> + hostad_afc_parse_available_chan_info(iface,
> + reply_elem_obj))
> + continue;
> +
> + if (json_object_object_get_ex(reply_elem_obj,
> + "availabilityExpireTime",
> + &obj)) {
> + int timeout = hostad_afc_get_timeout(obj);
> +
> + if (request_timeout < 0 || timeout < request_timeout)
> + request_timeout = timeout;
> + }
> +
> + ret = status;
> + }
> +
> + iface->afc.data_valid = true;
> + iface->afc.timeout = request_timeout;
> + if (iface->afc.timeout < 0)
> + iface->afc.timeout = HOSTAPD_AFC_RETRY_TIMEOUT;
> +
> + return ret;
> +}
> +
> +
> +static int hostapd_afc_send_receive(struct hostapd_iface *iface)
> +{
> + struct hostapd_config *iconf = iface->conf;
> + json_object *request_obj = NULL;
> + struct timeval sock_timeout = {
> + .tv_sec = 5,
> + };
> + struct sockaddr_un addr = {
> + .sun_family = AF_UNIX,
> +#ifdef __FreeBSD__
> + .sun_len = sizeof(addr),
> +#endif /* __FreeBSD__ */
> + };
> + char buf[HOSTAPD_AFC_BUFSIZE] = {};
> + const char *request;
> + int sockfd, ret;
> + fd_set read_set;
> +
> + if (iface->afc.data_valid) {
> + /* AFC data already downloaded from the server */
> + return 0;
> + }
> +
> + if (!iconf->afc.socket) {
> + wpa_printf(MSG_ERROR, "Missing AFC socket string");
> + return -EINVAL;
> + }
> +
> + iface->afc.timeout = HOSTAPD_AFC_RETRY_TIMEOUT;
> + if (os_strlen(iconf->afc.socket) >= sizeof(addr.sun_path)) {
> + wpa_printf(MSG_ERROR, "Malformed AFC socket string %s",
> + iconf->afc.socket);
> + return -EINVAL;
> + }
> +
> + os_strlcpy(addr.sun_path, iconf->afc.socket, sizeof(addr.sun_path));
> + sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
> + if (sockfd < 0) {
> + wpa_printf(MSG_ERROR, "Failed creating AFC socket");
> + return sockfd;
> + }
> +
> + if (connect(sockfd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
> + wpa_printf(MSG_ERROR, "Failed connecting AFC socket");
> + ret = -EIO;
> + goto close_sock;
> + }
> +
> + request_obj = hostapd_afc_build_request(iface);
> + if (!request_obj) {
> + ret = -ENOMEM;
> + goto close_sock;
> + }
> +
> + request = json_object_to_json_string(request_obj);
> + if (send(sockfd, request, strlen(request), 0) < 0) {
> + wpa_printf(MSG_ERROR, "Failed sending AFC request");
> + ret = -EIO;
> + goto close_sock;
> + }
> +
> + FD_ZERO(&read_set);
> + FD_SET(sockfd, &read_set);
> + if (select(sockfd + 1, &read_set, NULL, NULL, &sock_timeout) < 0) {
> + wpa_printf(MSG_ERROR, "Select failed on AFC socket");
> + ret = -errno;
> + goto close_sock;
> + }
> +
> + if (!FD_ISSET(sockfd, &read_set)) {
> + ret = -EIO;
> + goto close_sock;
> + }
> +
> + ret = recv(sockfd, buf, sizeof(buf) - 1, 0);
> + if (ret <= 0)
> + goto close_sock;
> +
> + ret = hostapd_afc_parse_reply(iface, buf);
> +close_sock:
> + json_object_put(request_obj);
> + close(sockfd);
> +
> + return ret;
> +}
> +
> +
> +static bool hostapd_afc_has_usable_chans(struct hostapd_iface *iface)
> +{
> + const struct oper_class_map *oper_class;
> + int ch;
> +
> + oper_class = get_oper_class(NULL, iface->conf->op_class);
> + if (!oper_class)
> + return false;
> +
> + for (ch = oper_class->min_chan; ch <= oper_class->max_chan;
> + ch += oper_class->inc) {
> + struct hostapd_hw_modes *mode = iface->current_mode;
> + int i;
> +
> + for (i = 0; i < mode->num_channels; i++) {
> + struct hostapd_channel_data *chan = &mode->channels[i];
> +
> + if (chan->chan == ch &&
> + !(chan->flag & HOSTAPD_CHAN_DISABLED))
> + return true;
> + }
> + }
> +
> + return false;
> +}
> +
> +
> +int hostapd_afc_handle_request(struct hostapd_iface *iface)
> +{
> + struct hostapd_config *iconf = iface->conf;
> + int ret;
> +
> + /* AFC is required just for standard power AP */
> + if (!he_reg_is_sp(iconf->he_6ghz_reg_pwr_type))
> + return 1;
> +
> + if (!is_6ghz_op_class(iconf->op_class) || !is_6ghz_freq(iface->freq))
> + return 1;
> +
> + if (iface->state == HAPD_IFACE_ACS)
> + return 1;
> +
> + ret = hostapd_afc_send_receive(iface);
> + if (ret < 0) {
> + /*
> + * If the connection to the AFCD failed, resched for a
> + * future attempt.
> + */
> + wpa_printf(MSG_ERROR, "AFC connection failed: %d", ret);
> + if (ret == -EIO)
> + ret = 0;
> + goto resched;
> + }
> +
> + hostap_afc_disable_channels(iface);
> + if (!hostapd_afc_has_usable_chans(iface))
> + goto resched;
> +
> + /* Trigger an ACS freq scan */
> + iconf->channel = 0;
> + iface->freq = 0;
> +
> + if (acs_init(iface) != HOSTAPD_CHAN_ACS) {
> + wpa_printf(MSG_ERROR, "Could not start ACS");
> + ret = -EINVAL;
> + }
> +
> +resched:
> + eloop_cancel_timeout(hostapd_afc_timeout_handler, iface, NULL);
> + eloop_register_timeout(iface->afc.timeout, 0,
> + hostapd_afc_timeout_handler, iface, NULL);
> +
> + return ret;
> +}
> +
> +
> +static void hostapd_afc_delete_data_from_server(struct hostapd_iface *iface)
> +{
> + os_free(iface->afc.chan_info_list);
> + os_free(iface->afc.freq_range);
> +
> + iface->afc.num_freq_range = 0;
> + iface->afc.num_chan_info = 0;
> +
> + iface->afc.chan_info_list = NULL;
> + iface->afc.freq_range = NULL;
> +
> + iface->afc.data_valid = false;
> +}
> +
> +
> +static void hostapd_afc_timeout_handler(void *eloop_ctx, void *timeout_ctx)
> +{
> + struct hostapd_iface *iface = eloop_ctx;
> + bool restart_iface = true;
> +
> + hostapd_afc_delete_data_from_server(iface);
> + if (iface->state != HAPD_IFACE_ENABLED) {
> + /* Hostapd is not fully enabled yet, toggle the interface */
> + goto restart_interface;
> + }
> +
> + if (hostapd_afc_send_receive(iface) < 0 ||
> + hostapd_get_hw_features(iface)) {
> + restart_iface = false;
> + goto restart_interface;
> + }
> +
> + if (hostapd_is_usable_chans(iface))
> + goto resched;
> +
> + restart_iface = hostapd_afc_has_usable_chans(iface);
> + if (restart_iface) {
> + /* Trigger an ACS freq scan */
> + iface->conf->channel = 0;
> + iface->freq = 0;
> + }
> +
> +restart_interface:
> + hostapd_disable_iface(iface);
> + if (restart_iface)
> + hostapd_enable_iface(iface);
> +resched:
> + eloop_register_timeout(iface->afc.timeout, 0,
> + hostapd_afc_timeout_handler, iface, NULL);
> +}
> +
> +
> +void hostapd_afc_stop(struct hostapd_iface *iface)
> +{
> + eloop_cancel_timeout(hostapd_afc_timeout_handler, iface, NULL);
> +}
> +
> +
> +void hostap_afc_disable_channels(struct hostapd_iface *iface)
> +{
> + struct hostapd_hw_modes *mode;
> + int i;
> +
> + if (iface->num_hw_features < HOSTAPD_MODE_IEEE80211A)
> + return;
> +
> + if (!he_reg_is_sp(iface->conf->he_6ghz_reg_pwr_type))
> + return;
> +
> + if (!iface->afc.data_valid)
> + return;
> +
> + mode = &iface->hw_features[HOSTAPD_MODE_IEEE80211A];
> + for (i = 0; i < mode->num_channels; i++) {
> + struct hostapd_channel_data *chan = &mode->channels[i];
> + int j;
> +
> + if (!is_6ghz_freq(chan->freq))
> + continue;
> +
> + for (j = 0; j < iface->afc.num_freq_range; j++) {
> + if (chan->freq >= iface->afc.freq_range[j].low_freq &&
> + chan->freq <= iface->afc.freq_range[j].high_freq)
> + break;
> + }
> +
> + if (j != iface->afc.num_freq_range)
> + continue;
> +
> + for (j = 0; j < iface->afc.num_chan_info; j++) {
> + if (chan->chan == iface->afc.chan_info_list[j].chan)
> + break;
> + }
> +
> + if (j != iface->afc.num_chan_info)
> + continue;
> +
> + chan->flag |= HOSTAPD_CHAN_DISABLED;
Please add a debug print with channel info.
> + }
> +}
> diff --git a/src/ap/ap_config.c b/src/ap/ap_config.c
> index 1a18df617..ca67aeb41 100644
> --- a/src/ap/ap_config.c
> +++ b/src/ap/ap_config.c
> @@ -1035,6 +1035,22 @@ void hostapd_config_free(struct hostapd_config *conf)
> #endif /* CONFIG_ACS */
> wpabuf_free(conf->lci);
> wpabuf_free(conf->civic);
> +#ifdef CONFIG_AFC
> + os_free(conf->afc.socket);
> + os_free(conf->afc.request.version);
> + os_free(conf->afc.request.id);
> + os_free(conf->afc.request.sn);
> + for (i = 0; i < conf->afc.n_cert_ids; i++) {
> + os_free(conf->afc.cert_ids[i].rulset);
> + os_free(conf->afc.cert_ids[i].id);
> + }
> + os_free(conf->afc.cert_ids);
> + os_free(conf->afc.location.height_type);
> + os_free(conf->afc.location.linear_polygon_data);
> + os_free(conf->afc.location.radial_polygon_data);
> + os_free(conf->afc.freq_range);
> + os_free(conf->afc.op_class);
> +#endif /* CONFIG_AFC */
>
> os_free(conf);
> }
> diff --git a/src/ap/ap_config.h b/src/ap/ap_config.h
> index 754d55331..2330163c4 100644
> --- a/src/ap/ap_config.h
> +++ b/src/ap/ap_config.h
> @@ -1225,6 +1225,53 @@ struct hostapd_config {
> MBSSID_ENABLED = 1,
> ENHANCED_MBSSID_ENABLED = 2,
> } mbssid;
> +
> +#ifdef CONFIG_AFC
> + struct {
> + char *socket;
> + struct {
> + char *version;
> + char *id;
> + char *sn;
> + } request;
> + unsigned int n_cert_ids;
> + struct cert_id {
> + char *rulset;
> + char *id;
> + } *cert_ids;
> + struct {
> + enum afc_location_type {
> + ELLIPSE,
> + LINEAR_POLYGON,
> + RADIAL_POLYGON,
> + } type;
> + unsigned int n_linear_polygon_data;
> + struct afc_linear_polygon {
> + double longitude;
> + double latitude;
> + } *linear_polygon_data;
> + unsigned int n_radial_polygon_data;
> + struct afc_radial_polygon {
> + double length;
> + double angle;
> + } *radial_polygon_data;
> + int major_axis;
> + int minor_axis;
> + int orientation;
> + double height;
> + char *height_type;
> + int vertical_tolerance;
> + } location;
> + unsigned int n_freq_range;
> + struct afc_freq_range {
> + int low_freq;
> + int high_freq;
> + } *freq_range;
> + unsigned int n_op_class;
> + unsigned int *op_class;
> + int min_power;
> + } afc;
> +#endif /* CONFIG_AFC */
> };
>
>
> diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
> index f8cb6432d..940a2a0af 100644
> --- a/src/ap/hostapd.c
> +++ b/src/ap/hostapd.c
> @@ -714,6 +714,7 @@ void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
> static void hostapd_cleanup_iface(struct hostapd_iface *iface)
> {
> wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
> + hostapd_afc_stop(iface);
> eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
> eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
> NULL);
> @@ -2454,6 +2455,16 @@ static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
> }
> #endif /* CONFIG_MESH */
>
> +#ifdef CONFIG_IEEE80211AX
> + /* check AFC for 6GHz channels. */
> + res = hostapd_afc_handle_request(iface);
> + if (res <= 0) {
> + if (res < 0)
> + goto fail;
> + return res;
> + }
> +#endif /* CONFIG_IEEE80211AX */
> +
> if (!delay_apply_cfg &&
> hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
> hapd->iconf->channel,
> @@ -2852,6 +2863,7 @@ void hostapd_interface_deinit(struct hostapd_iface *iface)
>
> hostapd_set_state(iface, HAPD_IFACE_DISABLED);
>
> + hostapd_afc_stop(iface);
> eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
> iface->wait_channel_update = 0;
> iface->is_no_ir = false;
> @@ -2925,6 +2937,10 @@ void hostapd_interface_free(struct hostapd_iface *iface)
> __func__, iface->bss[j]);
> os_free(iface->bss[j]);
> }
> +#ifdef CONFIG_AFC
> + os_free(iface->afc.chan_info_list);
> + os_free(iface->afc.freq_range);
> +#endif
> hostapd_cleanup_iface(iface);
> }
>
> diff --git a/src/ap/hostapd.h b/src/ap/hostapd.h
> index affe4f604..b74dc75f6 100644
> --- a/src/ap/hostapd.h
> +++ b/src/ap/hostapd.h
> @@ -700,9 +700,54 @@ struct hostapd_iface {
>
> /* Configured freq of interface is NO_IR */
> bool is_no_ir;
> +
> +#ifdef CONFIG_AFC
> + struct {
> + int timeout;
> + unsigned int num_freq_range;
> + struct afc_freq_range_elem {
> + int low_freq;
> + int high_freq;
> + /**
> + * max eirp power spectral density received from
> + * the AFC coordinator for this band
> + */
> + int max_psd;
> + } *freq_range;
> + unsigned int num_chan_info;
> + struct afc_chan_info_elem {
> + int chan;
> + /**
> + * max eirp power received from the AFC coordinator
> + * for this channel
> + */
> + int power;
> + } *chan_info_list;
> + bool data_valid;
> + } afc;
> +#endif /* CONFIG_AFC */
> };
>
> /* hostapd.c */
> +#ifdef CONFIG_AFC
> +int hostapd_afc_handle_request(struct hostapd_iface *iface);
> +void hostapd_afc_stop(struct hostapd_iface *iface);
> +void hostap_afc_disable_channels(struct hostapd_iface *iface);
> +#else
> +static inline int hostapd_afc_handle_request(struct hostapd_iface *iface)
> +{
> + return 1;
> +}
> +
> +static inline void hostapd_afc_stop(struct hostapd_iface *iface)
> +{
> +}
> +
> +static inline void hostap_afc_disable_channels(struct hostapd_iface *iface)
> +{
> +}
> +#endif /* CONFIG_AFC */
> +
> int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
> int (*cb)(struct hostapd_iface *iface,
> void *ctx), void *ctx);
> diff --git a/src/ap/hw_features.c b/src/ap/hw_features.c
> index e652d7504..222f3dc05 100644
> --- a/src/ap/hw_features.c
> +++ b/src/ap/hw_features.c
> @@ -114,6 +114,8 @@ int hostapd_get_hw_features(struct hostapd_iface *iface)
> iface->hw_features = modes;
> iface->num_hw_features = num_modes;
>
> + hostap_afc_disable_channels(iface);
> +
> for (i = 0; i < num_modes; i++) {
> struct hostapd_hw_modes *feature = &modes[i];
> int dfs_enabled = hapd->iconf->ieee80211h &&
> --
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