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hostapd/src/drivers/driver_nl80211_capa.c
Zefir Kurtisi 5f9c92f8f7 nl80211: Fix vendor command handling 
In wiphy_info_handler(), vendor specific commands were
interpreted as QCA specific without checking for the OUI,
which caused incorrect setting of driver flags with
commands from other vendors. As a result, that could
prevent proper operation (e.g., inability to process CSA).

This patch ensures that QCA vendor specific commands are
checked against QCA OUI before related flags are set.

Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
2015-03-20 15:56:59 +02:00

1563 lines
42 KiB
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/*
* Driver interaction with Linux nl80211/cfg80211 - Capabilities
* Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
* Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
* Copyright (c) 2009-2010, Atheros Communications
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include <netlink/genl/genl.h>
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/qca-vendor.h"
#include "common/qca-vendor-attr.h"
#include "driver_nl80211.h"
static int protocol_feature_handler(struct nl_msg *msg, void *arg)
{
u32 *feat = arg;
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
*feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
return NL_SKIP;
}
static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
{
u32 feat = 0;
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return 0;
if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) {
nlmsg_free(msg);
return 0;
}
if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
return feat;
return 0;
}
struct wiphy_info_data {
struct wpa_driver_nl80211_data *drv;
struct wpa_driver_capa *capa;
unsigned int num_multichan_concurrent;
unsigned int error:1;
unsigned int device_ap_sme:1;
unsigned int poll_command_supported:1;
unsigned int data_tx_status:1;
unsigned int monitor_supported:1;
unsigned int auth_supported:1;
unsigned int connect_supported:1;
unsigned int p2p_go_supported:1;
unsigned int p2p_client_supported:1;
unsigned int p2p_go_ctwindow_supported:1;
unsigned int p2p_concurrent:1;
unsigned int channel_switch_supported:1;
unsigned int set_qos_map_supported:1;
unsigned int have_low_prio_scan:1;
unsigned int wmm_ac_supported:1;
unsigned int mac_addr_rand_scan_supported:1;
unsigned int mac_addr_rand_sched_scan_supported:1;
};
static unsigned int probe_resp_offload_support(int supp_protocols)
{
unsigned int prot = 0;
if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
return prot;
}
static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
struct nlattr *tb)
{
struct nlattr *nl_mode;
int i;
if (tb == NULL)
return;
nla_for_each_nested(nl_mode, tb, i) {
switch (nla_type(nl_mode)) {
case NL80211_IFTYPE_AP:
info->capa->flags |= WPA_DRIVER_FLAGS_AP;
break;
case NL80211_IFTYPE_MESH_POINT:
info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
break;
case NL80211_IFTYPE_ADHOC:
info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
break;
case NL80211_IFTYPE_P2P_DEVICE:
info->capa->flags |=
WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
break;
case NL80211_IFTYPE_P2P_GO:
info->p2p_go_supported = 1;
break;
case NL80211_IFTYPE_P2P_CLIENT:
info->p2p_client_supported = 1;
break;
case NL80211_IFTYPE_MONITOR:
info->monitor_supported = 1;
break;
}
}
}
static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
struct nlattr *nl_combi)
{
struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
struct nlattr *nl_limit, *nl_mode;
int err, rem_limit, rem_mode;
int combination_has_p2p = 0, combination_has_mgd = 0;
static struct nla_policy
iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
[NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
[NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
[NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
[NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
},
iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
[NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
[NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
};
err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
nl_combi, iface_combination_policy);
if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
!tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
!tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
return 0; /* broken combination */
if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
rem_limit) {
err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
nl_limit, iface_limit_policy);
if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
return 0; /* broken combination */
nla_for_each_nested(nl_mode,
tb_limit[NL80211_IFACE_LIMIT_TYPES],
rem_mode) {
int ift = nla_type(nl_mode);
if (ift == NL80211_IFTYPE_P2P_GO ||
ift == NL80211_IFTYPE_P2P_CLIENT)
combination_has_p2p = 1;
if (ift == NL80211_IFTYPE_STATION)
combination_has_mgd = 1;
}
if (combination_has_p2p && combination_has_mgd)
break;
}
if (combination_has_p2p && combination_has_mgd) {
unsigned int num_channels =
nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
info->p2p_concurrent = 1;
if (info->num_multichan_concurrent < num_channels)
info->num_multichan_concurrent = num_channels;
}
return 0;
}
static void wiphy_info_iface_comb(struct wiphy_info_data *info,
struct nlattr *tb)
{
struct nlattr *nl_combi;
int rem_combi;
if (tb == NULL)
return;
nla_for_each_nested(nl_combi, tb, rem_combi) {
if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
break;
}
}
static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
struct nlattr *tb)
{
struct nlattr *nl_cmd;
int i;
if (tb == NULL)
return;
nla_for_each_nested(nl_cmd, tb, i) {
switch (nla_get_u32(nl_cmd)) {
case NL80211_CMD_AUTHENTICATE:
info->auth_supported = 1;
break;
case NL80211_CMD_CONNECT:
info->connect_supported = 1;
break;
case NL80211_CMD_START_SCHED_SCAN:
info->capa->sched_scan_supported = 1;
break;
case NL80211_CMD_PROBE_CLIENT:
info->poll_command_supported = 1;
break;
case NL80211_CMD_CHANNEL_SWITCH:
info->channel_switch_supported = 1;
break;
case NL80211_CMD_SET_QOS_MAP:
info->set_qos_map_supported = 1;
break;
}
}
}
static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
struct nlattr *tb)
{
int i, num;
u32 *ciphers;
if (tb == NULL)
return;
num = nla_len(tb) / sizeof(u32);
ciphers = nla_data(tb);
for (i = 0; i < num; i++) {
u32 c = ciphers[i];
wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
c >> 24, (c >> 16) & 0xff,
(c >> 8) & 0xff, c & 0xff);
switch (c) {
case WLAN_CIPHER_SUITE_CCMP_256:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
break;
case WLAN_CIPHER_SUITE_GCMP_256:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
break;
case WLAN_CIPHER_SUITE_CCMP:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
break;
case WLAN_CIPHER_SUITE_GCMP:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
break;
case WLAN_CIPHER_SUITE_TKIP:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
break;
case WLAN_CIPHER_SUITE_WEP104:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
break;
case WLAN_CIPHER_SUITE_WEP40:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
break;
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
break;
case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
break;
}
}
}
static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
struct nlattr *tb)
{
if (tb)
capa->max_remain_on_chan = nla_get_u32(tb);
}
static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
struct nlattr *ext_setup)
{
if (tdls == NULL)
return;
wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
if (ext_setup) {
wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
}
}
static int ext_feature_isset(const u8 *ext_features, int ext_features_len,
enum nl80211_ext_feature_index ftidx)
{
u8 ft_byte;
if ((int) ftidx / 8 >= ext_features_len)
return 0;
ft_byte = ext_features[ftidx / 8];
return (ft_byte & BIT(ftidx % 8)) != 0;
}
static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
struct nlattr *tb)
{
struct wpa_driver_capa *capa = info->capa;
if (tb == NULL)
return;
if (ext_feature_isset(nla_data(tb), nla_len(tb),
NL80211_EXT_FEATURE_VHT_IBSS))
capa->flags |= WPA_DRIVER_FLAGS_VHT_IBSS;
}
static void wiphy_info_feature_flags(struct wiphy_info_data *info,
struct nlattr *tb)
{
u32 flags;
struct wpa_driver_capa *capa = info->capa;
if (tb == NULL)
return;
flags = nla_get_u32(tb);
if (flags & NL80211_FEATURE_SK_TX_STATUS)
info->data_tx_status = 1;
if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
if (flags & NL80211_FEATURE_SAE)
capa->flags |= WPA_DRIVER_FLAGS_SAE;
if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) {
wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch");
capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
}
if (flags & NL80211_FEATURE_P2P_GO_CTWIN)
info->p2p_go_ctwindow_supported = 1;
if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
info->have_low_prio_scan = 1;
if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)
info->mac_addr_rand_scan_supported = 1;
if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR)
info->mac_addr_rand_sched_scan_supported = 1;
if (flags & NL80211_FEATURE_STATIC_SMPS)
capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
info->wmm_ac_supported = 1;
if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
if (flags & NL80211_FEATURE_QUIET)
capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
if (flags & NL80211_FEATURE_HT_IBSS)
capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS;
}
static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
struct nlattr *tb)
{
u32 protocols;
if (tb == NULL)
return;
protocols = nla_get_u32(tb);
wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
"mode");
capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
capa->probe_resp_offloads = probe_resp_offload_support(protocols);
}
static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
struct nlattr *tb)
{
struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
if (tb == NULL)
return;
if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
tb, NULL))
return;
if (triggers[NL80211_WOWLAN_TRIG_ANY])
capa->wowlan_triggers.any = 1;
if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
capa->wowlan_triggers.disconnect = 1;
if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
capa->wowlan_triggers.magic_pkt = 1;
if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
capa->wowlan_triggers.gtk_rekey_failure = 1;
if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
capa->wowlan_triggers.eap_identity_req = 1;
if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
capa->wowlan_triggers.four_way_handshake = 1;
if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
capa->wowlan_triggers.rfkill_release = 1;
}
static int wiphy_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wiphy_info_data *info = arg;
struct wpa_driver_capa *capa = info->capa;
struct wpa_driver_nl80211_data *drv = info->drv;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_WIPHY_NAME])
os_strlcpy(drv->phyname,
nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
sizeof(drv->phyname));
if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
capa->max_scan_ssids =
nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
capa->max_sched_scan_ssids =
nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
if (tb[NL80211_ATTR_MAX_MATCH_SETS])
capa->max_match_sets =
nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
if (tb[NL80211_ATTR_MAC_ACL_MAX])
capa->max_acl_mac_addrs =
nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
"off-channel TX");
capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
}
if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
}
wiphy_info_max_roc(capa,
tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
if (tb[NL80211_ATTR_DEVICE_AP_SME])
info->device_ap_sme = 1;
wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
wiphy_info_ext_feature_flags(info, tb[NL80211_ATTR_EXT_FEATURES]);
wiphy_info_probe_resp_offload(capa,
tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
drv->extended_capa == NULL) {
drv->extended_capa =
os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
if (drv->extended_capa) {
os_memcpy(drv->extended_capa,
nla_data(tb[NL80211_ATTR_EXT_CAPA]),
nla_len(tb[NL80211_ATTR_EXT_CAPA]));
drv->extended_capa_len =
nla_len(tb[NL80211_ATTR_EXT_CAPA]);
}
drv->extended_capa_mask =
os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
if (drv->extended_capa_mask) {
os_memcpy(drv->extended_capa_mask,
nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]),
nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
} else {
os_free(drv->extended_capa);
drv->extended_capa = NULL;
drv->extended_capa_len = 0;
}
}
if (tb[NL80211_ATTR_VENDOR_DATA]) {
struct nlattr *nl;
int rem;
nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
struct nl80211_vendor_cmd_info *vinfo;
if (nla_len(nl) != sizeof(*vinfo)) {
wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
continue;
}
vinfo = nla_data(nl);
if (vinfo->vendor_id == OUI_QCA) {
switch (vinfo->subcmd) {
case QCA_NL80211_VENDOR_SUBCMD_TEST:
drv->vendor_cmd_test_avail = 1;
break;
case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
drv->roaming_vendor_cmd_avail = 1;
break;
case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
drv->dfs_vendor_cmd_avail = 1;
break;
case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES:
drv->get_features_vendor_cmd_avail = 1;
break;
case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
drv->capa.flags |=
WPA_DRIVER_FLAGS_ACS_OFFLOAD;
break;
}
}
wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
vinfo->vendor_id, vinfo->subcmd);
}
}
if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
struct nlattr *nl;
int rem;
nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
struct nl80211_vendor_cmd_info *vinfo;
if (nla_len(nl) != sizeof(*vinfo)) {
wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
continue;
}
vinfo = nla_data(nl);
wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
vinfo->vendor_id, vinfo->subcmd);
}
}
wiphy_info_wowlan_triggers(capa,
tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
capa->max_stations =
nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
return NL_SKIP;
}
static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
struct wiphy_info_data *info)
{
u32 feat;
struct nl_msg *msg;
int flags = 0;
os_memset(info, 0, sizeof(*info));
info->capa = &drv->capa;
info->drv = drv;
feat = get_nl80211_protocol_features(drv);
if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
flags = NLM_F_DUMP;
msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
nlmsg_free(msg);
return -1;
}
if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
return -1;
if (info->auth_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
else if (!info->connect_supported) {
wpa_printf(MSG_INFO, "nl80211: Driver does not support "
"authentication/association or connect commands");
info->error = 1;
}
if (info->p2p_go_supported && info->p2p_client_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
if (info->p2p_concurrent) {
wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
"interface (driver advertised support)");
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
}
if (info->num_multichan_concurrent > 1) {
wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
"concurrent (driver advertised support)");
drv->capa.num_multichan_concurrent =
info->num_multichan_concurrent;
}
if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
/* default to 5000 since early versions of mac80211 don't set it */
if (!drv->capa.max_remain_on_chan)
drv->capa.max_remain_on_chan = 5000;
if (info->channel_switch_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
drv->capa.wmm_ac_supported = info->wmm_ac_supported;
drv->capa.mac_addr_rand_sched_scan_supported =
info->mac_addr_rand_sched_scan_supported;
drv->capa.mac_addr_rand_scan_supported =
info->mac_addr_rand_scan_supported;
return 0;
}
static int dfs_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
int *dfs_capability_ptr = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_VENDOR_DATA]) {
struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
nla_data(nl_vend), nla_len(nl_vend), NULL);
if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
u32 val;
val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
val);
*dfs_capability_ptr = val;
}
}
return NL_SKIP;
}
static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
{
struct nl_msg *msg;
int dfs_capability = 0;
int ret;
if (!drv->dfs_vendor_cmd_avail)
return;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
nlmsg_free(msg);
return;
}
ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
if (!ret && dfs_capability)
drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
}
struct features_info {
u8 *flags;
size_t flags_len;
};
static int features_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct features_info *info = arg;
struct nlattr *nl_vend, *attr;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
if (nl_vend) {
struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
nla_data(nl_vend), nla_len(nl_vend), NULL);
attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
if (attr) {
info->flags = nla_data(attr);
info->flags_len = nla_len(attr);
}
}
return NL_SKIP;
}
static int check_feature(enum qca_wlan_vendor_features feature,
struct features_info *info)
{
size_t idx = feature / 8;
return (idx < info->flags_len) &&
(info->flags[idx] & BIT(feature % 8));
}
static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
{
struct nl_msg *msg;
struct features_info info;
int ret;
if (!drv->get_features_vendor_cmd_avail)
return;
if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
nlmsg_free(msg);
return;
}
os_memset(&info, 0, sizeof(info));
ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
if (ret || !info.flags)
return;
if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
}
int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
{
struct wiphy_info_data info;
if (wpa_driver_nl80211_get_info(drv, &info))
return -1;
if (info.error)
return -1;
drv->has_capability = 1;
drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK |
WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B |
WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192;
drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
WPA_DRIVER_AUTH_SHARED |
WPA_DRIVER_AUTH_LEAP;
drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
/*
* As all cfg80211 drivers must support cases where the AP interface is
* removed without the knowledge of wpa_supplicant/hostapd, e.g., in
* case that the user space daemon has crashed, they must be able to
* cleanup all stations and key entries in the AP tear down flow. Thus,
* this flag can/should always be set for cfg80211 drivers.
*/
drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
if (!info.device_ap_sme) {
drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
/*
* No AP SME is currently assumed to also indicate no AP MLME
* in the driver/firmware.
*/
drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
}
drv->device_ap_sme = info.device_ap_sme;
drv->poll_command_supported = info.poll_command_supported;
drv->data_tx_status = info.data_tx_status;
drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported;
if (info.set_qos_map_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
drv->have_low_prio_scan = info.have_low_prio_scan;
/*
* If poll command and tx status are supported, mac80211 is new enough
* to have everything we need to not need monitor interfaces.
*/
drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
if (drv->device_ap_sme && drv->use_monitor) {
/*
* Non-mac80211 drivers may not support monitor interface.
* Make sure we do not get stuck with incorrect capability here
* by explicitly testing this.
*/
if (!info.monitor_supported) {
wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
"with device_ap_sme since no monitor mode "
"support detected");
drv->use_monitor = 0;
}
}
/*
* If we aren't going to use monitor interfaces, but the
* driver doesn't support data TX status, we won't get TX
* status for EAPOL frames.
*/
if (!drv->use_monitor && !info.data_tx_status)
drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
qca_nl80211_check_dfs_capa(drv);
qca_nl80211_get_features(drv);
return 0;
}
struct phy_info_arg {
u16 *num_modes;
struct hostapd_hw_modes *modes;
int last_mode, last_chan_idx;
};
static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
struct nlattr *ampdu_factor,
struct nlattr *ampdu_density,
struct nlattr *mcs_set)
{
if (capa)
mode->ht_capab = nla_get_u16(capa);
if (ampdu_factor)
mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
if (ampdu_density)
mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
if (mcs_set && nla_len(mcs_set) >= 16) {
u8 *mcs;
mcs = nla_data(mcs_set);
os_memcpy(mode->mcs_set, mcs, 16);
}
}
static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
struct nlattr *capa,
struct nlattr *mcs_set)
{
if (capa)
mode->vht_capab = nla_get_u32(capa);
if (mcs_set && nla_len(mcs_set) >= 8) {
u8 *mcs;
mcs = nla_data(mcs_set);
os_memcpy(mode->vht_mcs_set, mcs, 8);
}
}
static void phy_info_freq(struct hostapd_hw_modes *mode,
struct hostapd_channel_data *chan,
struct nlattr *tb_freq[])
{
u8 channel;
chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
chan->flag = 0;
chan->dfs_cac_ms = 0;
if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
chan->chan = channel;
if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
chan->flag |= HOSTAPD_CHAN_DISABLED;
if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
chan->flag |= HOSTAPD_CHAN_NO_IR;
if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
chan->flag |= HOSTAPD_CHAN_RADAR;
if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
enum nl80211_dfs_state state =
nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
switch (state) {
case NL80211_DFS_USABLE:
chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
break;
case NL80211_DFS_AVAILABLE:
chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
break;
case NL80211_DFS_UNAVAILABLE:
chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
break;
}
}
if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
chan->dfs_cac_ms = nla_get_u32(
tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
}
}
static int phy_info_freqs(struct phy_info_arg *phy_info,
struct hostapd_hw_modes *mode, struct nlattr *tb)
{
static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
[NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
};
int new_channels = 0;
struct hostapd_channel_data *channel;
struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
struct nlattr *nl_freq;
int rem_freq, idx;
if (tb == NULL)
return NL_OK;
nla_for_each_nested(nl_freq, tb, rem_freq) {
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_freq), nla_len(nl_freq), freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
new_channels++;
}
channel = os_realloc_array(mode->channels,
mode->num_channels + new_channels,
sizeof(struct hostapd_channel_data));
if (!channel)
return NL_SKIP;
mode->channels = channel;
mode->num_channels += new_channels;
idx = phy_info->last_chan_idx;
nla_for_each_nested(nl_freq, tb, rem_freq) {
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_freq), nla_len(nl_freq), freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
phy_info_freq(mode, &mode->channels[idx], tb_freq);
idx++;
}
phy_info->last_chan_idx = idx;
return NL_OK;
}
static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
{
static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
{ .type = NLA_FLAG },
};
struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
struct nlattr *nl_rate;
int rem_rate, idx;
if (tb == NULL)
return NL_OK;
nla_for_each_nested(nl_rate, tb, rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
nla_data(nl_rate), nla_len(nl_rate),
rate_policy);
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
continue;
mode->num_rates++;
}
mode->rates = os_calloc(mode->num_rates, sizeof(int));
if (!mode->rates)
return NL_SKIP;
idx = 0;
nla_for_each_nested(nl_rate, tb, rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
nla_data(nl_rate), nla_len(nl_rate),
rate_policy);
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
continue;
mode->rates[idx] = nla_get_u32(
tb_rate[NL80211_BITRATE_ATTR_RATE]);
idx++;
}
return NL_OK;
}
static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
{
struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
struct hostapd_hw_modes *mode;
int ret;
if (phy_info->last_mode != nl_band->nla_type) {
mode = os_realloc_array(phy_info->modes,
*phy_info->num_modes + 1,
sizeof(*mode));
if (!mode)
return NL_SKIP;
phy_info->modes = mode;
mode = &phy_info->modes[*(phy_info->num_modes)];
os_memset(mode, 0, sizeof(*mode));
mode->mode = NUM_HOSTAPD_MODES;
mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
/*
* Unsupported VHT MCS stream is defined as value 3, so the VHT
* MCS RX/TX map must be initialized with 0xffff to mark all 8
* possible streams as unsupported. This will be overridden if
* driver advertises VHT support.
*/
mode->vht_mcs_set[0] = 0xff;
mode->vht_mcs_set[1] = 0xff;
mode->vht_mcs_set[4] = 0xff;
mode->vht_mcs_set[5] = 0xff;
*(phy_info->num_modes) += 1;
phy_info->last_mode = nl_band->nla_type;
phy_info->last_chan_idx = 0;
} else
mode = &phy_info->modes[*(phy_info->num_modes) - 1];
nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
nla_len(nl_band), NULL);
phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
if (ret != NL_OK)
return ret;
ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
if (ret != NL_OK)
return ret;
return NL_OK;
}
static int phy_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct phy_info_arg *phy_info = arg;
struct nlattr *nl_band;
int rem_band;
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
return NL_SKIP;
nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
{
int res = phy_info_band(phy_info, nl_band);
if (res != NL_OK)
return res;
}
return NL_SKIP;
}
static struct hostapd_hw_modes *
wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
u16 *num_modes)
{
u16 m;
struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
int i, mode11g_idx = -1;
/* heuristic to set up modes */
for (m = 0; m < *num_modes; m++) {
if (!modes[m].num_channels)
continue;
if (modes[m].channels[0].freq < 4000) {
modes[m].mode = HOSTAPD_MODE_IEEE80211B;
for (i = 0; i < modes[m].num_rates; i++) {
if (modes[m].rates[i] > 200) {
modes[m].mode = HOSTAPD_MODE_IEEE80211G;
break;
}
}
} else if (modes[m].channels[0].freq > 50000)
modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
else
modes[m].mode = HOSTAPD_MODE_IEEE80211A;
}
/* If only 802.11g mode is included, use it to construct matching
* 802.11b mode data. */
for (m = 0; m < *num_modes; m++) {
if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
return modes; /* 802.11b already included */
if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
mode11g_idx = m;
}
if (mode11g_idx < 0)
return modes; /* 2.4 GHz band not supported at all */
nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
if (nmodes == NULL)
return modes; /* Could not add 802.11b mode */
mode = &nmodes[*num_modes];
os_memset(mode, 0, sizeof(*mode));
(*num_modes)++;
modes = nmodes;
mode->mode = HOSTAPD_MODE_IEEE80211B;
mode11g = &modes[mode11g_idx];
mode->num_channels = mode11g->num_channels;
mode->channels = os_malloc(mode11g->num_channels *
sizeof(struct hostapd_channel_data));
if (mode->channels == NULL) {
(*num_modes)--;
return modes; /* Could not add 802.11b mode */
}
os_memcpy(mode->channels, mode11g->channels,
mode11g->num_channels * sizeof(struct hostapd_channel_data));
mode->num_rates = 0;
mode->rates = os_malloc(4 * sizeof(int));
if (mode->rates == NULL) {
os_free(mode->channels);
(*num_modes)--;
return modes; /* Could not add 802.11b mode */
}
for (i = 0; i < mode11g->num_rates; i++) {
if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
continue;
mode->rates[mode->num_rates] = mode11g->rates[i];
mode->num_rates++;
if (mode->num_rates == 4)
break;
}
if (mode->num_rates == 0) {
os_free(mode->channels);
os_free(mode->rates);
(*num_modes)--;
return modes; /* No 802.11b rates */
}
wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
"information");
return modes;
}
static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
int end)
{
int c;
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if (chan->freq - 10 >= start && chan->freq + 10 <= end)
chan->flag |= HOSTAPD_CHAN_HT40;
}
}
static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
int end)
{
int c;
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if (!(chan->flag & HOSTAPD_CHAN_HT40))
continue;
if (chan->freq - 30 >= start && chan->freq - 10 <= end)
chan->flag |= HOSTAPD_CHAN_HT40MINUS;
if (chan->freq + 10 >= start && chan->freq + 30 <= end)
chan->flag |= HOSTAPD_CHAN_HT40PLUS;
}
}
static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
struct phy_info_arg *results)
{
u16 m;
for (m = 0; m < *results->num_modes; m++) {
int c;
struct hostapd_hw_modes *mode = &results->modes[m];
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if ((u32) chan->freq - 10 >= start &&
(u32) chan->freq + 10 <= end)
chan->max_tx_power = max_eirp;
}
}
}
static void nl80211_reg_rule_ht40(u32 start, u32 end,
struct phy_info_arg *results)
{
u16 m;
for (m = 0; m < *results->num_modes; m++) {
if (!(results->modes[m].ht_capab &
HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
continue;
nl80211_set_ht40_mode(&results->modes[m], start, end);
}
}
static void nl80211_reg_rule_sec(struct nlattr *tb[],
struct phy_info_arg *results)
{
u32 start, end, max_bw;
u16 m;
if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
return;
start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
if (max_bw < 20)
return;
for (m = 0; m < *results->num_modes; m++) {
if (!(results->modes[m].ht_capab &
HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
continue;
nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
}
}
static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
int end)
{
int c;
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if (chan->freq - 10 >= start && chan->freq + 70 <= end)
chan->flag |= HOSTAPD_CHAN_VHT_10_70;
if (chan->freq - 30 >= start && chan->freq + 50 <= end)
chan->flag |= HOSTAPD_CHAN_VHT_30_50;
if (chan->freq - 50 >= start && chan->freq + 30 <= end)
chan->flag |= HOSTAPD_CHAN_VHT_50_30;
if (chan->freq - 70 >= start && chan->freq + 10 <= end)
chan->flag |= HOSTAPD_CHAN_VHT_70_10;
}
}
static void nl80211_reg_rule_vht(struct nlattr *tb[],
struct phy_info_arg *results)
{
u32 start, end, max_bw;
u16 m;
if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
return;
start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
if (max_bw < 80)
return;
for (m = 0; m < *results->num_modes; m++) {
if (!(results->modes[m].ht_capab &
HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
continue;
/* TODO: use a real VHT support indication */
if (!results->modes[m].vht_capab)
continue;
nl80211_set_vht_mode(&results->modes[m], start, end);
}
}
static const char * dfs_domain_name(enum nl80211_dfs_regions region)
{
switch (region) {
case NL80211_DFS_UNSET:
return "DFS-UNSET";
case NL80211_DFS_FCC:
return "DFS-FCC";
case NL80211_DFS_ETSI:
return "DFS-ETSI";
case NL80211_DFS_JP:
return "DFS-JP";
default:
return "DFS-invalid";
}
}
static int nl80211_get_reg(struct nl_msg *msg, void *arg)
{
struct phy_info_arg *results = arg;
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *nl_rule;
struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
int rem_rule;
static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
[NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
};
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
!tb_msg[NL80211_ATTR_REG_RULES]) {
wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
"available");
return NL_SKIP;
}
if (tb_msg[NL80211_ATTR_DFS_REGION]) {
enum nl80211_dfs_regions dfs_domain;
dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
(char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
dfs_domain_name(dfs_domain));
} else {
wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
(char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
}
nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
{
u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_rule), nla_len(nl_rule), reg_policy);
if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
continue;
start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
start, end, max_bw, max_eirp,
flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
"",
flags & NL80211_RRF_DFS ? " (DFS)" : "",
flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
if (max_bw >= 40)
nl80211_reg_rule_ht40(start, end, results);
if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
nl80211_reg_rule_max_eirp(start, end, max_eirp,
results);
}
nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
{
nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_rule), nla_len(nl_rule), reg_policy);
nl80211_reg_rule_sec(tb_rule, results);
}
nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
{
nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_rule), nla_len(nl_rule), reg_policy);
nl80211_reg_rule_vht(tb_rule, results);
}
return NL_SKIP;
}
static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
struct phy_info_arg *results)
{
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
}
struct hostapd_hw_modes *
nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
{
u32 feat;
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
int nl_flags = 0;
struct nl_msg *msg;
struct phy_info_arg result = {
.num_modes = num_modes,
.modes = NULL,
.last_mode = -1,
};
*num_modes = 0;
*flags = 0;
feat = get_nl80211_protocol_features(drv);
if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
nl_flags = NLM_F_DUMP;
if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
nlmsg_free(msg);
return NULL;
}
if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
nl80211_set_regulatory_flags(drv, &result);
return wpa_driver_nl80211_postprocess_modes(result.modes,
num_modes);
}
return NULL;
}
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