blob: a450bc6bc77453b368aecef35b19971241e8994b [file] [log] [blame]
/*
* Copyright (c) 2012-2012 Quantenna Communications, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/kernel.h>
#include <linux/etherdevice.h>
#include <linux/vmalloc.h>
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include <net/netlink.h>
#include "cfg80211.h"
#include "commands.h"
#include "core.h"
#include "util.h"
#include "bus.h"
/* Supported rates to be advertised to the cfg80211 */
static struct ieee80211_rate qtnf_rates_2g[] = {
{.bitrate = 10, .hw_value = 2, },
{.bitrate = 20, .hw_value = 4, },
{.bitrate = 55, .hw_value = 11, },
{.bitrate = 110, .hw_value = 22, },
{.bitrate = 60, .hw_value = 12, },
{.bitrate = 90, .hw_value = 18, },
{.bitrate = 120, .hw_value = 24, },
{.bitrate = 180, .hw_value = 36, },
{.bitrate = 240, .hw_value = 48, },
{.bitrate = 360, .hw_value = 72, },
{.bitrate = 480, .hw_value = 96, },
{.bitrate = 540, .hw_value = 108, },
};
/* Supported rates to be advertised to the cfg80211 */
static struct ieee80211_rate qtnf_rates_5g[] = {
{.bitrate = 60, .hw_value = 12, },
{.bitrate = 90, .hw_value = 18, },
{.bitrate = 120, .hw_value = 24, },
{.bitrate = 180, .hw_value = 36, },
{.bitrate = 240, .hw_value = 48, },
{.bitrate = 360, .hw_value = 72, },
{.bitrate = 480, .hw_value = 96, },
{.bitrate = 540, .hw_value = 108, },
};
/* Supported crypto cipher suits to be advertised to cfg80211 */
static const u32 qtnf_cipher_suites[] = {
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
WLAN_CIPHER_SUITE_AES_CMAC,
};
/* Supported mgmt frame types to be advertised to cfg80211 */
static const struct ieee80211_txrx_stypes
qtnf_mgmt_stypes[NUM_NL80211_IFTYPES] = {
[NL80211_IFTYPE_STATION] = {
.tx = BIT(IEEE80211_STYPE_ACTION >> 4),
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
[NL80211_IFTYPE_AP] = {
.tx = BIT(IEEE80211_STYPE_ACTION >> 4),
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
};
static int
qtnf_change_virtual_intf(struct wiphy *wiphy,
struct net_device *dev,
enum nl80211_iftype type,
struct vif_params *params)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
u8 *mac_addr;
int ret;
if (params)
mac_addr = params->macaddr;
else
mac_addr = NULL;
qtnf_scan_done(vif->mac, true);
ret = qtnf_cmd_send_change_intf_type(vif, type, mac_addr);
if (ret) {
pr_err("VIF%u.%u: failed to change VIF type: %d\n",
vif->mac->macid, vif->vifid, ret);
return ret;
}
vif->wdev.iftype = type;
return 0;
}
int qtnf_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct net_device *netdev = wdev->netdev;
struct qtnf_vif *vif;
if (WARN_ON(!netdev))
return -EFAULT;
vif = qtnf_netdev_get_priv(wdev->netdev);
qtnf_scan_done(vif->mac, true);
if (qtnf_cmd_send_del_intf(vif))
pr_err("VIF%u.%u: failed to delete VIF\n", vif->mac->macid,
vif->vifid);
/* Stop data */
netif_tx_stop_all_queues(netdev);
if (netif_carrier_ok(netdev))
netif_carrier_off(netdev);
if (netdev->reg_state == NETREG_REGISTERED)
unregister_netdevice(netdev);
vif->netdev->ieee80211_ptr = NULL;
vif->netdev = NULL;
vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
eth_zero_addr(vif->mac_addr);
return 0;
}
static struct wireless_dev *qtnf_add_virtual_intf(struct wiphy *wiphy,
const char *name,
unsigned char name_assign_t,
enum nl80211_iftype type,
struct vif_params *params)
{
struct qtnf_wmac *mac;
struct qtnf_vif *vif;
u8 *mac_addr = NULL;
mac = wiphy_priv(wiphy);
if (!mac)
return ERR_PTR(-EFAULT);
switch (type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_AP:
vif = qtnf_mac_get_free_vif(mac);
if (!vif) {
pr_err("MAC%u: no free VIF available\n", mac->macid);
return ERR_PTR(-EFAULT);
}
eth_zero_addr(vif->mac_addr);
vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
vif->wdev.wiphy = wiphy;
vif->wdev.iftype = type;
vif->sta_state = QTNF_STA_DISCONNECTED;
break;
default:
pr_err("MAC%u: unsupported IF type %d\n", mac->macid, type);
return ERR_PTR(-ENOTSUPP);
}
if (params)
mac_addr = params->macaddr;
if (qtnf_cmd_send_add_intf(vif, type, mac_addr)) {
pr_err("VIF%u.%u: failed to add VIF\n", mac->macid, vif->vifid);
goto err_cmd;
}
if (!is_valid_ether_addr(vif->mac_addr)) {
pr_err("VIF%u.%u: FW reported bad MAC: %pM\n",
mac->macid, vif->vifid, vif->mac_addr);
goto err_mac;
}
if (qtnf_core_net_attach(mac, vif, name, name_assign_t, type)) {
pr_err("VIF%u.%u: failed to attach netdev\n", mac->macid,
vif->vifid);
goto err_net;
}
vif->wdev.netdev = vif->netdev;
return &vif->wdev;
err_net:
vif->netdev = NULL;
err_mac:
qtnf_cmd_send_del_intf(vif);
err_cmd:
vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
return ERR_PTR(-EFAULT);
}
static int qtnf_mgmt_set_appie(struct qtnf_vif *vif,
const struct cfg80211_beacon_data *info)
{
int ret = 0;
if (!info->beacon_ies || !info->beacon_ies_len) {
ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_MGMT_FRAME_BEACON,
NULL, 0);
} else {
ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_MGMT_FRAME_BEACON,
info->beacon_ies,
info->beacon_ies_len);
}
if (ret)
goto out;
if (!info->proberesp_ies || !info->proberesp_ies_len) {
ret = qtnf_cmd_send_mgmt_set_appie(vif,
QLINK_MGMT_FRAME_PROBE_RESP,
NULL, 0);
} else {
ret = qtnf_cmd_send_mgmt_set_appie(vif,
QLINK_MGMT_FRAME_PROBE_RESP,
info->proberesp_ies,
info->proberesp_ies_len);
}
if (ret)
goto out;
if (!info->assocresp_ies || !info->assocresp_ies_len) {
ret = qtnf_cmd_send_mgmt_set_appie(vif,
QLINK_MGMT_FRAME_ASSOC_RESP,
NULL, 0);
} else {
ret = qtnf_cmd_send_mgmt_set_appie(vif,
QLINK_MGMT_FRAME_ASSOC_RESP,
info->assocresp_ies,
info->assocresp_ies_len);
}
out:
return ret;
}
static int qtnf_change_beacon(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_beacon_data *info)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
if (!(vif->bss_status & QTNF_STATE_AP_START)) {
pr_err("VIF%u.%u: not started\n", vif->mac->macid, vif->vifid);
return -EFAULT;
}
return qtnf_mgmt_set_appie(vif, info);
}
static int qtnf_start_ap(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ap_settings *settings)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct qtnf_bss_config *bss_cfg;
int ret;
if (!cfg80211_chandef_identical(&mac->chandef, &settings->chandef)) {
memcpy(&mac->chandef, &settings->chandef, sizeof(mac->chandef));
if (vif->vifid != 0)
pr_warn("%s: unexpected chan %u (%u MHz)\n", dev->name,
settings->chandef.chan->hw_value,
settings->chandef.chan->center_freq);
}
bss_cfg = &vif->bss_cfg;
memset(bss_cfg, 0, sizeof(*bss_cfg));
bss_cfg->bcn_period = settings->beacon_interval;
bss_cfg->dtim = settings->dtim_period;
bss_cfg->auth_type = settings->auth_type;
bss_cfg->privacy = settings->privacy;
bss_cfg->ssid_len = settings->ssid_len;
memcpy(&bss_cfg->ssid, settings->ssid, bss_cfg->ssid_len);
memcpy(&bss_cfg->crypto, &settings->crypto,
sizeof(struct cfg80211_crypto_settings));
ret = qtnf_cmd_send_config_ap(vif);
if (ret) {
pr_err("VIF%u.%u: failed to push config to FW\n",
vif->mac->macid, vif->vifid);
goto out;
}
if (!(vif->bss_status & QTNF_STATE_AP_CONFIG)) {
pr_err("VIF%u.%u: AP config failed in FW\n", vif->mac->macid,
vif->vifid);
ret = -EFAULT;
goto out;
}
ret = qtnf_mgmt_set_appie(vif, &settings->beacon);
if (ret) {
pr_err("VIF%u.%u: failed to add IEs to beacon\n",
vif->mac->macid, vif->vifid);
goto out;
}
ret = qtnf_cmd_send_start_ap(vif);
if (ret) {
pr_err("VIF%u.%u: failed to start AP\n", vif->mac->macid,
vif->vifid);
goto out;
}
if (!(vif->bss_status & QTNF_STATE_AP_START)) {
pr_err("VIF%u.%u: FW failed to start AP operation\n",
vif->mac->macid, vif->vifid);
ret = -EFAULT;
}
out:
return ret;
}
static int qtnf_stop_ap(struct wiphy *wiphy, struct net_device *dev)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
qtnf_scan_done(vif->mac, true);
ret = qtnf_cmd_send_stop_ap(vif);
if (ret) {
pr_err("VIF%u.%u: failed to stop AP operation in FW\n",
vif->mac->macid, vif->vifid);
vif->bss_status &= ~QTNF_STATE_AP_START;
vif->bss_status &= ~QTNF_STATE_AP_CONFIG;
netif_carrier_off(vif->netdev);
}
return ret;
}
static int qtnf_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct qtnf_vif *vif;
int ret;
vif = qtnf_mac_get_base_vif(mac);
if (!vif) {
pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
return -EFAULT;
}
if (changed & (WIPHY_PARAM_RETRY_LONG | WIPHY_PARAM_RETRY_SHORT)) {
pr_err("MAC%u: can't modify retry params\n", mac->macid);
return -EOPNOTSUPP;
}
ret = qtnf_cmd_send_update_phy_params(mac, changed);
if (ret)
pr_err("MAC%u: failed to update PHY params\n", mac->macid);
return ret;
}
static void
qtnf_mgmt_frame_register(struct wiphy *wiphy, struct wireless_dev *wdev,
u16 frame_type, bool reg)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
u16 mgmt_type;
u16 new_mask;
u16 qlink_frame_type = 0;
mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
if (reg)
new_mask = vif->mgmt_frames_bitmask | BIT(mgmt_type);
else
new_mask = vif->mgmt_frames_bitmask & ~BIT(mgmt_type);
if (new_mask == vif->mgmt_frames_bitmask)
return;
switch (frame_type & IEEE80211_FCTL_STYPE) {
case IEEE80211_STYPE_PROBE_REQ:
qlink_frame_type = QLINK_MGMT_FRAME_PROBE_REQ;
break;
case IEEE80211_STYPE_ACTION:
qlink_frame_type = QLINK_MGMT_FRAME_ACTION;
break;
default:
pr_warn("VIF%u.%u: unsupported frame type: %X\n",
vif->mac->macid, vif->vifid,
(frame_type & IEEE80211_FCTL_STYPE) >> 4);
return;
}
if (qtnf_cmd_send_register_mgmt(vif, qlink_frame_type, reg)) {
pr_warn("VIF%u.%u: failed to %sregister mgmt frame type 0x%x\n",
vif->mac->macid, vif->vifid, reg ? "" : "un",
frame_type);
return;
}
vif->mgmt_frames_bitmask = new_mask;
pr_debug("VIF%u.%u: %sregistered mgmt frame type 0x%x\n",
vif->mac->macid, vif->vifid, reg ? "" : "un", frame_type);
}
static int
qtnf_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
struct cfg80211_mgmt_tx_params *params, u64 *cookie)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
const struct ieee80211_mgmt *mgmt_frame = (void *)params->buf;
u32 short_cookie = prandom_u32();
u16 flags = 0;
*cookie = short_cookie;
if (params->offchan)
flags |= QLINK_MGMT_FRAME_TX_FLAG_OFFCHAN;
if (params->no_cck)
flags |= QLINK_MGMT_FRAME_TX_FLAG_NO_CCK;
if (params->dont_wait_for_ack)
flags |= QLINK_MGMT_FRAME_TX_FLAG_ACK_NOWAIT;
pr_debug("%s freq:%u; FC:%.4X; DA:%pM; len:%zu; C:%.8X; FL:%.4X\n",
wdev->netdev->name, params->chan->center_freq,
le16_to_cpu(mgmt_frame->frame_control), mgmt_frame->da,
params->len, short_cookie, flags);
return qtnf_cmd_send_mgmt_frame(vif, short_cookie, flags,
params->chan->center_freq,
params->buf, params->len);
}
static int
qtnf_get_station(struct wiphy *wiphy, struct net_device *dev,
const u8 *mac, struct station_info *sinfo)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
return qtnf_cmd_get_sta_info(vif, mac, sinfo);
}
static int
qtnf_dump_station(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
const struct qtnf_sta_node *sta_node;
int ret;
sta_node = qtnf_sta_list_lookup_index(&vif->sta_list, idx);
if (unlikely(!sta_node))
return -ENOENT;
ether_addr_copy(mac, sta_node->mac_addr);
ret = qtnf_cmd_get_sta_info(vif, sta_node->mac_addr, sinfo);
if (unlikely(ret == -ENOENT)) {
qtnf_sta_list_del(&vif->sta_list, mac);
cfg80211_del_sta(vif->netdev, mac, GFP_KERNEL);
sinfo->filled = 0;
}
return ret;
}
static int qtnf_add_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_index, bool pairwise, const u8 *mac_addr,
struct key_params *params)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
ret = qtnf_cmd_send_add_key(vif, key_index, pairwise, mac_addr, params);
if (ret)
pr_err("VIF%u.%u: failed to add key: cipher=%x idx=%u pw=%u\n",
vif->mac->macid, vif->vifid, params->cipher, key_index,
pairwise);
return ret;
}
static int qtnf_del_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_index, bool pairwise, const u8 *mac_addr)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
ret = qtnf_cmd_send_del_key(vif, key_index, pairwise, mac_addr);
if (ret)
pr_err("VIF%u.%u: failed to delete key: idx=%u pw=%u\n",
vif->mac->macid, vif->vifid, key_index, pairwise);
return ret;
}
static int qtnf_set_default_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_index, bool unicast, bool multicast)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
ret = qtnf_cmd_send_set_default_key(vif, key_index, unicast, multicast);
if (ret)
pr_err("VIF%u.%u: failed to set dflt key: idx=%u uc=%u mc=%u\n",
vif->mac->macid, vif->vifid, key_index, unicast,
multicast);
return ret;
}
static int
qtnf_set_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_index)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
ret = qtnf_cmd_send_set_default_mgmt_key(vif, key_index);
if (ret)
pr_err("VIF%u.%u: failed to set default MGMT key: idx=%u\n",
vif->mac->macid, vif->vifid, key_index);
return ret;
}
static int
qtnf_change_station(struct wiphy *wiphy, struct net_device *dev,
const u8 *mac, struct station_parameters *params)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
ret = qtnf_cmd_send_change_sta(vif, mac, params);
if (ret)
pr_err("VIF%u.%u: failed to change STA %pM\n",
vif->mac->macid, vif->vifid, mac);
return ret;
}
static int
qtnf_del_station(struct wiphy *wiphy, struct net_device *dev,
struct station_del_parameters *params)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
if (params->mac &&
(vif->wdev.iftype == NL80211_IFTYPE_AP) &&
!is_broadcast_ether_addr(params->mac) &&
!qtnf_sta_list_lookup(&vif->sta_list, params->mac))
return 0;
ret = qtnf_cmd_send_del_sta(vif, params);
if (ret)
pr_err("VIF%u.%u: failed to delete STA %pM\n",
vif->mac->macid, vif->vifid, params->mac);
return ret;
}
static void qtnf_scan_timeout(unsigned long data)
{
struct qtnf_wmac *mac = (struct qtnf_wmac *)data;
pr_warn("mac%d scan timed out\n", mac->macid);
qtnf_scan_done(mac, true);
}
static int
qtnf_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
mac->scan_req = request;
if (qtnf_cmd_send_scan(mac)) {
pr_err("MAC%u: failed to start scan\n", mac->macid);
mac->scan_req = NULL;
return -EFAULT;
}
mac->scan_timeout.data = (unsigned long)mac;
mac->scan_timeout.function = qtnf_scan_timeout;
mod_timer(&mac->scan_timeout,
jiffies + QTNF_SCAN_TIMEOUT_SEC * HZ);
return 0;
}
static int
qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_connect_params *sme)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct cfg80211_chan_def chandef;
struct qtnf_bss_config *bss_cfg;
int ret;
if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
if (vif->sta_state != QTNF_STA_DISCONNECTED)
return -EBUSY;
bss_cfg = &vif->bss_cfg;
memset(bss_cfg, 0, sizeof(*bss_cfg));
if (sme->channel) {
/* FIXME: need to set proper nl80211_channel_type value */
cfg80211_chandef_create(&chandef, sme->channel,
NL80211_CHAN_HT20);
/* fall-back to minimal safe chandef description */
if (!cfg80211_chandef_valid(&chandef))
cfg80211_chandef_create(&chandef, sme->channel,
NL80211_CHAN_HT20);
memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
}
bss_cfg->ssid_len = sme->ssid_len;
memcpy(&bss_cfg->ssid, sme->ssid, bss_cfg->ssid_len);
bss_cfg->auth_type = sme->auth_type;
bss_cfg->privacy = sme->privacy;
bss_cfg->mfp = sme->mfp;
if ((sme->bg_scan_period > 0) &&
(sme->bg_scan_period <= QTNF_MAX_BG_SCAN_PERIOD))
bss_cfg->bg_scan_period = sme->bg_scan_period;
else if (sme->bg_scan_period == -1)
bss_cfg->bg_scan_period = QTNF_DEFAULT_BG_SCAN_PERIOD;
else
bss_cfg->bg_scan_period = 0; /* disabled */
bss_cfg->connect_flags = 0;
if (sme->flags & ASSOC_REQ_DISABLE_HT)
bss_cfg->connect_flags |= QLINK_STA_CONNECT_DISABLE_HT;
if (sme->flags & ASSOC_REQ_DISABLE_VHT)
bss_cfg->connect_flags |= QLINK_STA_CONNECT_DISABLE_VHT;
if (sme->flags & ASSOC_REQ_USE_RRM)
bss_cfg->connect_flags |= QLINK_STA_CONNECT_USE_RRM;
memcpy(&bss_cfg->crypto, &sme->crypto, sizeof(bss_cfg->crypto));
if (sme->bssid)
ether_addr_copy(bss_cfg->bssid, sme->bssid);
else
eth_zero_addr(bss_cfg->bssid);
ret = qtnf_cmd_send_connect(vif, sme);
if (ret) {
pr_err("VIF%u.%u: failed to connect\n", vif->mac->macid,
vif->vifid);
return ret;
}
vif->sta_state = QTNF_STA_CONNECTING;
return 0;
}
static int
qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
u16 reason_code)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct qtnf_vif *vif;
int ret;
vif = qtnf_mac_get_base_vif(mac);
if (!vif) {
pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
return -EFAULT;
}
if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
if (vif->sta_state == QTNF_STA_DISCONNECTED)
return 0;
ret = qtnf_cmd_send_disconnect(vif, reason_code);
if (ret) {
pr_err("VIF%u.%u: failed to disconnect\n", mac->macid,
vif->vifid);
return ret;
}
vif->sta_state = QTNF_STA_DISCONNECTED;
return 0;
}
static int
qtnf_dump_survey(struct wiphy *wiphy, struct net_device *dev,
int idx, struct survey_info *survey)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct ieee80211_supported_band *sband;
struct cfg80211_chan_def *chandef;
struct ieee80211_channel *chan;
struct qtnf_chan_stats stats;
struct qtnf_vif *vif;
int ret;
vif = qtnf_netdev_get_priv(dev);
chandef = &mac->chandef;
sband = wiphy->bands[NL80211_BAND_2GHZ];
if (sband && idx >= sband->n_channels) {
idx -= sband->n_channels;
sband = NULL;
}
if (!sband)
sband = wiphy->bands[NL80211_BAND_5GHZ];
if (!sband || idx >= sband->n_channels)
return -ENOENT;
chan = &sband->channels[idx];
memset(&stats, 0, sizeof(stats));
survey->channel = chan;
survey->filled = 0x0;
if (chandef->chan) {
if (chan->hw_value == chandef->chan->hw_value)
survey->filled = SURVEY_INFO_IN_USE;
}
ret = qtnf_cmd_get_chan_stats(mac, chan->hw_value, &stats);
switch (ret) {
case 0:
if (unlikely(stats.chan_num != chan->hw_value)) {
pr_err("received stats for channel %d instead of %d\n",
stats.chan_num, chan->hw_value);
ret = -EINVAL;
break;
}
survey->filled |= SURVEY_INFO_TIME |
SURVEY_INFO_TIME_SCAN |
SURVEY_INFO_TIME_BUSY |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_TX |
SURVEY_INFO_NOISE_DBM;
survey->time_scan = stats.cca_try;
survey->time = stats.cca_try;
survey->time_tx = stats.cca_tx;
survey->time_rx = stats.cca_rx;
survey->time_busy = stats.cca_busy;
survey->noise = stats.chan_noise;
break;
case -ENOENT:
pr_debug("no stats for channel %u\n", chan->hw_value);
ret = 0;
break;
default:
pr_debug("failed to get chan(%d) stats from card\n",
chan->hw_value);
ret = -EINVAL;
break;
}
return ret;
}
static int
qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct net_device *ndev = wdev->netdev;
struct qtnf_vif *vif;
if (!ndev)
return -ENODEV;
vif = qtnf_netdev_get_priv(wdev->netdev);
switch (vif->wdev.iftype) {
case NL80211_IFTYPE_STATION:
if (vif->sta_state == QTNF_STA_DISCONNECTED) {
pr_warn("%s: STA disconnected\n", ndev->name);
return -ENODATA;
}
break;
case NL80211_IFTYPE_AP:
if (!(vif->bss_status & QTNF_STATE_AP_START)) {
pr_warn("%s: AP not started\n", ndev->name);
return -ENODATA;
}
break;
default:
pr_err("unsupported vif type (%d)\n", vif->wdev.iftype);
return -ENODATA;
}
if (!cfg80211_chandef_valid(&mac->chandef)) {
pr_err("invalid channel settings on %s\n", ndev->name);
return -ENODATA;
}
memcpy(chandef, &mac->chandef, sizeof(*chandef));
return 0;
}
static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_csa_settings *params)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy);
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
pr_debug("%s: chan(%u) count(%u) radar(%u) block_tx(%u)\n", dev->name,
params->chandef.chan->hw_value, params->count,
params->radar_required, params->block_tx);
switch (vif->wdev.iftype) {
case NL80211_IFTYPE_AP:
if (!(vif->bss_status & QTNF_STATE_AP_START)) {
pr_warn("AP not started on %s\n", dev->name);
return -ENOTCONN;
}
break;
default:
pr_err("unsupported vif type (%d) on %s\n",
vif->wdev.iftype, dev->name);
return -EOPNOTSUPP;
}
if (vif->vifid != 0) {
if (!(mac->status & QTNF_MAC_CSA_ACTIVE))
return -EOPNOTSUPP;
if (!cfg80211_chandef_identical(&params->chandef,
&mac->csa_chandef))
return -EINVAL;
return 0;
}
if (!cfg80211_chandef_valid(&params->chandef)) {
pr_err("%s: invalid channel\n", dev->name);
return -EINVAL;
}
if (cfg80211_chandef_identical(&params->chandef, &mac->chandef)) {
pr_err("%s: switch request to the same channel\n", dev->name);
return -EALREADY;
}
ret = qtnf_cmd_send_chan_switch(mac, params);
if (ret)
pr_warn("%s: failed to switch to channel (%u)\n",
dev->name, params->chandef.chan->hw_value);
return ret;
}
static struct cfg80211_ops qtn_cfg80211_ops = {
.add_virtual_intf = qtnf_add_virtual_intf,
.change_virtual_intf = qtnf_change_virtual_intf,
.del_virtual_intf = qtnf_del_virtual_intf,
.start_ap = qtnf_start_ap,
.change_beacon = qtnf_change_beacon,
.stop_ap = qtnf_stop_ap,
.set_wiphy_params = qtnf_set_wiphy_params,
.mgmt_frame_register = qtnf_mgmt_frame_register,
.mgmt_tx = qtnf_mgmt_tx,
.change_station = qtnf_change_station,
.del_station = qtnf_del_station,
.get_station = qtnf_get_station,
.dump_station = qtnf_dump_station,
.add_key = qtnf_add_key,
.del_key = qtnf_del_key,
.set_default_key = qtnf_set_default_key,
.set_default_mgmt_key = qtnf_set_default_mgmt_key,
.scan = qtnf_scan,
.connect = qtnf_connect,
.disconnect = qtnf_disconnect,
.dump_survey = qtnf_dump_survey,
.get_channel = qtnf_get_channel,
.channel_switch = qtnf_channel_switch
};
static void qtnf_cfg80211_reg_notifier(struct wiphy *wiphy_in,
struct regulatory_request *req)
{
struct qtnf_wmac *mac = wiphy_priv(wiphy_in);
struct qtnf_bus *bus = mac->bus;
struct wiphy *wiphy;
unsigned int mac_idx;
enum nl80211_band band;
int ret;
pr_debug("MAC%u: initiator=%d alpha=%c%c\n", mac->macid, req->initiator,
req->alpha2[0], req->alpha2[1]);
ret = qtnf_cmd_reg_notify(bus, req);
if (ret) {
if (ret != -EOPNOTSUPP && ret != -EALREADY)
pr_err("failed to update reg domain to %c%c\n",
req->alpha2[0], req->alpha2[1]);
return;
}
for (mac_idx = 0; mac_idx < QTNF_MAX_MAC; ++mac_idx) {
if (!(bus->hw_info.mac_bitmap & (1 << mac_idx)))
continue;
mac = bus->mac[mac_idx];
wiphy = priv_to_wiphy(mac);
for (band = 0; band < NUM_NL80211_BANDS; ++band) {
if (!wiphy->bands[band])
continue;
ret = qtnf_cmd_get_mac_chan_info(mac,
wiphy->bands[band]);
if (ret)
pr_err("failed to get chan info for mac %u band %u\n",
mac_idx, band);
}
}
}
void qtnf_band_setup_htvht_caps(struct qtnf_mac_info *macinfo,
struct ieee80211_supported_band *band)
{
struct ieee80211_sta_ht_cap *ht_cap;
struct ieee80211_sta_vht_cap *vht_cap;
ht_cap = &band->ht_cap;
ht_cap->ht_supported = true;
memcpy(&ht_cap->cap, &macinfo->ht_cap.cap_info,
sizeof(u16));
ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
memcpy(&ht_cap->mcs, &macinfo->ht_cap.mcs,
sizeof(ht_cap->mcs));
if (macinfo->phymode_cap & QLINK_PHYMODE_AC) {
vht_cap = &band->vht_cap;
vht_cap->vht_supported = true;
memcpy(&vht_cap->cap,
&macinfo->vht_cap.vht_cap_info, sizeof(u32));
/* Update MCS support for VHT */
memcpy(&vht_cap->vht_mcs,
&macinfo->vht_cap.supp_mcs,
sizeof(struct ieee80211_vht_mcs_info));
}
}
struct wiphy *qtnf_wiphy_allocate(struct qtnf_bus *bus)
{
struct wiphy *wiphy;
wiphy = wiphy_new(&qtn_cfg80211_ops, sizeof(struct qtnf_wmac));
if (!wiphy)
return NULL;
set_wiphy_dev(wiphy, bus->dev);
return wiphy;
}
static int qtnf_wiphy_setup_if_comb(struct wiphy *wiphy,
struct ieee80211_iface_combination *if_comb,
const struct qtnf_mac_info *mac_info)
{
size_t max_interfaces = 0;
u16 interface_modes = 0;
size_t i;
if (unlikely(!mac_info->limits || !mac_info->n_limits))
return -ENOENT;
if_comb->limits = mac_info->limits;
if_comb->n_limits = mac_info->n_limits;
for (i = 0; i < mac_info->n_limits; i++) {
max_interfaces += mac_info->limits[i].max;
interface_modes |= mac_info->limits[i].types;
}
if_comb->num_different_channels = 1;
if_comb->beacon_int_infra_match = true;
if_comb->max_interfaces = max_interfaces;
if_comb->radar_detect_widths = mac_info->radar_detect_widths;
wiphy->interface_modes = interface_modes;
return 0;
}
int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac)
{
struct wiphy *wiphy = priv_to_wiphy(mac);
struct ieee80211_iface_combination *iface_comb = NULL;
int ret;
if (!wiphy) {
pr_err("invalid wiphy pointer\n");
return -EFAULT;
}
iface_comb = kzalloc(sizeof(*iface_comb), GFP_KERNEL);
if (!iface_comb)
return -ENOMEM;
ret = qtnf_wiphy_setup_if_comb(wiphy, iface_comb, &mac->macinfo);
if (ret)
goto out;
pr_info("MAC%u: phymode=%#x radar=%#x\n", mac->macid,
mac->macinfo.phymode_cap, mac->macinfo.radar_detect_widths);
wiphy->frag_threshold = mac->macinfo.frag_thr;
wiphy->rts_threshold = mac->macinfo.rts_thr;
wiphy->retry_short = mac->macinfo.sretry_limit;
wiphy->retry_long = mac->macinfo.lretry_limit;
wiphy->coverage_class = mac->macinfo.coverage_class;
wiphy->max_scan_ssids = QTNF_MAX_SSID_LIST_LENGTH;
wiphy->max_scan_ie_len = QTNF_MAX_VSIE_LEN;
wiphy->mgmt_stypes = qtnf_mgmt_stypes;
wiphy->max_remain_on_channel_duration = 5000;
wiphy->iface_combinations = iface_comb;
wiphy->n_iface_combinations = 1;
wiphy->max_num_csa_counters = 2;
/* Initialize cipher suits */
wiphy->cipher_suites = qtnf_cipher_suites;
wiphy->n_cipher_suites = ARRAY_SIZE(qtnf_cipher_suites);
wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
WIPHY_FLAG_AP_UAPSD |
WIPHY_FLAG_HAS_CHANNEL_SWITCH;
wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2;
wiphy->available_antennas_tx = mac->macinfo.num_tx_chain;
wiphy->available_antennas_rx = mac->macinfo.num_rx_chain;
wiphy->max_ap_assoc_sta = mac->macinfo.max_ap_assoc_sta;
ether_addr_copy(wiphy->perm_addr, mac->macaddr);
if (hw_info->hw_capab & QLINK_HW_SUPPORTS_REG_UPDATE) {
wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
REGULATORY_CUSTOM_REG;
wiphy->reg_notifier = qtnf_cfg80211_reg_notifier;
wiphy_apply_custom_regulatory(wiphy, hw_info->rd);
} else {
wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
}
ret = wiphy_register(wiphy);
if (ret < 0)
goto out;
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
ret = regulatory_set_wiphy_regd(wiphy, hw_info->rd);
else if (isalpha(hw_info->rd->alpha2[0]) &&
isalpha(hw_info->rd->alpha2[1]))
ret = regulatory_hint(wiphy, hw_info->rd->alpha2);
out:
if (ret) {
kfree(iface_comb);
return ret;
}
return 0;
}
void qtnf_netdev_updown(struct net_device *ndev, bool up)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
if (qtnf_cmd_send_updown_intf(vif, up))
pr_err("failed to send up/down command to FW\n");
}
void qtnf_virtual_intf_cleanup(struct net_device *ndev)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
struct qtnf_wmac *mac = wiphy_priv(vif->wdev.wiphy);
if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
switch (vif->sta_state) {
case QTNF_STA_DISCONNECTED:
break;
case QTNF_STA_CONNECTING:
cfg80211_connect_result(vif->netdev,
vif->bss_cfg.bssid, NULL, 0,
NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
GFP_KERNEL);
qtnf_disconnect(vif->wdev.wiphy, ndev,
WLAN_REASON_DEAUTH_LEAVING);
break;
case QTNF_STA_CONNECTED:
cfg80211_disconnected(vif->netdev,
WLAN_REASON_DEAUTH_LEAVING,
NULL, 0, 1, GFP_KERNEL);
qtnf_disconnect(vif->wdev.wiphy, ndev,
WLAN_REASON_DEAUTH_LEAVING);
break;
}
vif->sta_state = QTNF_STA_DISCONNECTED;
}
qtnf_scan_done(mac, true);
}
void qtnf_cfg80211_vif_reset(struct qtnf_vif *vif)
{
if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
switch (vif->sta_state) {
case QTNF_STA_CONNECTING:
cfg80211_connect_result(vif->netdev,
vif->bss_cfg.bssid, NULL, 0,
NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
GFP_KERNEL);
break;
case QTNF_STA_CONNECTED:
cfg80211_disconnected(vif->netdev,
WLAN_REASON_DEAUTH_LEAVING,
NULL, 0, 1, GFP_KERNEL);
break;
case QTNF_STA_DISCONNECTED:
break;
}
}
cfg80211_shutdown_all_interfaces(vif->wdev.wiphy);
vif->sta_state = QTNF_STA_DISCONNECTED;
}
void qtnf_band_init_rates(struct ieee80211_supported_band *band)
{
switch (band->band) {
case NL80211_BAND_2GHZ:
band->bitrates = qtnf_rates_2g;
band->n_bitrates = ARRAY_SIZE(qtnf_rates_2g);
break;
case NL80211_BAND_5GHZ:
band->bitrates = qtnf_rates_5g;
band->n_bitrates = ARRAY_SIZE(qtnf_rates_5g);
break;
default:
band->bitrates = NULL;
band->n_bitrates = 0;
break;
}
}