#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/if_ether.h>
#include <linux/nospec.h>
#include "core.h"
#include "bus.h"
#include "trans.h"
#include "commands.h"
#include "cfg80211.h"
#include "event.h"
#include "util.h"
#include "switchdev.h"
#define QTNF_PRIMARY_VIF_IDX 0
static bool slave_radar = true;
module_param(slave_radar, bool, 0644);
MODULE_PARM_DESC(slave_radar, "set 0 to disable radar detection in slave mode");
static bool dfs_offload;
module_param(dfs_offload, bool, 0644);
MODULE_PARM_DESC(dfs_offload, "set 1 to enable DFS offload to firmware");
static struct dentry *qtnf_debugfs_dir;
bool qtnf_slave_radar_get(void)
{
return slave_radar;
}
bool qtnf_dfs_offload_get(void)
{
return dfs_offload;
}
struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid)
{
struct qtnf_wmac *mac = NULL;
if (macid >= QTNF_MAX_MAC) {
pr_err("invalid MAC index %u\n", macid);
return NULL;
}
macid = array_index_nospec(macid, QTNF_MAX_MAC);
mac = bus->mac[macid];
if (unlikely(!mac)) {
pr_err("MAC%u: not initialized\n", macid);
return NULL;
}
return mac;
}
static int qtnf_netdev_open(struct net_device *ndev)
{
netif_carrier_off(ndev);
qtnf_netdev_updown(ndev, 1);
return 0;
}
static int qtnf_netdev_close(struct net_device *ndev)
{
netif_carrier_off(ndev);
qtnf_virtual_intf_cleanup(ndev);
qtnf_netdev_updown(ndev, 0);
return 0;
}
static void qtnf_packet_send_hi_pri(struct sk_buff *skb)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(skb->dev);
skb_queue_tail(&vif->high_pri_tx_queue, skb);
queue_work(vif->mac->bus->hprio_workqueue, &vif->high_pri_tx_work);
}
static netdev_tx_t
qtnf_netdev_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
struct qtnf_vif *vif;
struct qtnf_wmac *mac;
vif = qtnf_netdev_get_priv(ndev);
if (unlikely(skb->dev != ndev)) {
pr_err_ratelimited("invalid skb->dev");
dev_kfree_skb_any(skb);
return 0;
}
if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
pr_err_ratelimited("%s: VIF not initialized\n", ndev->name);
dev_kfree_skb_any(skb);
return 0;
}
mac = vif->mac;
if (unlikely(!mac)) {
pr_err_ratelimited("%s: NULL mac pointer", ndev->name);
dev_kfree_skb_any(skb);
return 0;
}
if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
pr_err_ratelimited("%s: invalid skb len %d\n", ndev->name,
skb->len);
dev_kfree_skb_any(skb);
ndev->stats.tx_dropped++;
return 0;
}
vif->cons_tx_timeout_cnt = 0;
if (unlikely(skb->protocol == htons(ETH_P_PAE))) {
qtnf_packet_send_hi_pri(skb);
dev_sw_netstats_tx_add(ndev, 1, skb->len);
return NETDEV_TX_OK;
}
return qtnf_bus_data_tx(mac->bus, skb, mac->macid, vif->vifid);
}
static void qtnf_netdev_tx_timeout(struct net_device *ndev, unsigned int txqueue)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
struct qtnf_wmac *mac;
struct qtnf_bus *bus;
if (unlikely(!vif || !vif->mac || !vif->mac->bus))
return;
mac = vif->mac;
bus = mac->bus;
pr_warn("VIF%u.%u: Tx timeout- %lu\n", mac->macid, vif->vifid, jiffies);
qtnf_bus_data_tx_timeout(bus, ndev);
ndev->stats.tx_errors++;
if (++vif->cons_tx_timeout_cnt > QTNF_TX_TIMEOUT_TRSHLD) {
pr_err("Tx timeout threshold exceeded !\n");
pr_err("schedule interface %s reset !\n", netdev_name(ndev));
queue_work(bus->workqueue, &vif->reset_work);
}
}
static int qtnf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
struct sockaddr *sa = addr;
int ret;
unsigned char old_addr[ETH_ALEN];
memcpy(old_addr, sa->sa_data, sizeof(old_addr));
ret = eth_mac_addr(ndev, sa);
if (ret)
return ret;
qtnf_scan_done(vif->mac, true);
ret = qtnf_cmd_send_change_intf_type(vif, vif->wdev.iftype,
vif->wdev.use_4addr,
sa->sa_data);
if (ret)
eth_hw_addr_set(ndev, old_addr);
return ret;
}
static int qtnf_netdev_port_parent_id(struct net_device *ndev,
struct netdev_phys_item_id *ppid)
{
const struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
const struct qtnf_bus *bus = vif->mac->bus;
ppid->id_len = sizeof(bus->hw_id);
memcpy(&ppid->id, bus->hw_id, ppid->id_len);
return 0;
}
const struct net_device_ops qtnf_netdev_ops = {
.ndo_open = qtnf_netdev_open,
.ndo_stop = qtnf_netdev_close,
.ndo_start_xmit = qtnf_netdev_hard_start_xmit,
.ndo_tx_timeout = qtnf_netdev_tx_timeout,
.ndo_set_mac_address = qtnf_netdev_set_mac_address,
.ndo_get_port_parent_id = qtnf_netdev_port_parent_id,
};
static int qtnf_mac_init_single_band(struct wiphy *wiphy,
struct qtnf_wmac *mac,
enum nl80211_band band)
{
int ret;
wiphy->bands[band] = kzalloc_obj(*wiphy->bands[band]);
if (!wiphy->bands[band])
return -ENOMEM;
wiphy->bands[band]->band = band;
ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]);
if (ret) {
pr_err("MAC%u: band %u: failed to get chans info: %d\n",
mac->macid, band, ret);
return ret;
}
qtnf_band_init_rates(wiphy->bands[band]);
return 0;
}
static int qtnf_mac_init_bands(struct qtnf_wmac *mac)
{
struct wiphy *wiphy = priv_to_wiphy(mac);
int ret = 0;
if (mac->macinfo.bands_cap & QLINK_BAND_2GHZ) {
ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_2GHZ);
if (ret)
goto out;
}
if (mac->macinfo.bands_cap & QLINK_BAND_5GHZ) {
ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_5GHZ);
if (ret)
goto out;
}
if (mac->macinfo.bands_cap & QLINK_BAND_60GHZ)
ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_60GHZ);
out:
return ret;
}
struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac)
{
struct qtnf_vif *vif;
int i;
for (i = 0; i < QTNF_MAX_INTF; i++) {
vif = &mac->iflist[i];
if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
return vif;
}
return NULL;
}
struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac)
{
struct qtnf_vif *vif;
vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
return NULL;
return vif;
}
void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac)
{
struct ieee80211_iface_combination *comb;
int i;
if (mac->macinfo.if_comb) {
for (i = 0; i < mac->macinfo.n_if_comb; i++) {
comb = &mac->macinfo.if_comb[i];
kfree(comb->limits);
comb->limits = NULL;
}
kfree(mac->macinfo.if_comb);
mac->macinfo.if_comb = NULL;
}
}
void qtnf_mac_ext_caps_free(struct qtnf_wmac *mac)
{
if (mac->macinfo.extended_capabilities_len) {
kfree(mac->macinfo.extended_capabilities);
mac->macinfo.extended_capabilities = NULL;
kfree(mac->macinfo.extended_capabilities_mask);
mac->macinfo.extended_capabilities_mask = NULL;
mac->macinfo.extended_capabilities_len = 0;
}
}
static void qtnf_vif_reset_handler(struct work_struct *work)
{
struct qtnf_vif *vif = container_of(work, struct qtnf_vif, reset_work);
rtnl_lock();
if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
rtnl_unlock();
return;
}
netif_tx_stop_all_queues(vif->netdev);
if (netif_carrier_ok(vif->netdev))
netif_carrier_off(vif->netdev);
qtnf_cfg80211_vif_reset(vif);
rtnl_unlock();
}
static void qtnf_mac_init_primary_intf(struct qtnf_wmac *mac)
{
struct qtnf_vif *vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
vif->wdev.iftype = NL80211_IFTYPE_STATION;
vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
vif->wdev.wiphy = priv_to_wiphy(mac);
INIT_WORK(&vif->reset_work, qtnf_vif_reset_handler);
vif->cons_tx_timeout_cnt = 0;
}
static void qtnf_mac_scan_finish(struct qtnf_wmac *mac, bool aborted)
{
struct cfg80211_scan_info info = {
.aborted = aborted,
};
mutex_lock(&mac->mac_lock);
if (mac->scan_req) {
cfg80211_scan_done(mac->scan_req, &info);
mac->scan_req = NULL;
}
mutex_unlock(&mac->mac_lock);
}
void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted)
{
cancel_delayed_work_sync(&mac->scan_timeout);
qtnf_mac_scan_finish(mac, aborted);
}
static void qtnf_mac_scan_timeout(struct work_struct *work)
{
struct qtnf_wmac *mac =
container_of(work, struct qtnf_wmac, scan_timeout.work);
pr_warn("MAC%d: scan timed out\n", mac->macid);
qtnf_mac_scan_finish(mac, true);
}
static void qtnf_vif_send_data_high_pri(struct work_struct *work)
{
struct qtnf_vif *vif =
container_of(work, struct qtnf_vif, high_pri_tx_work);
struct sk_buff *skb;
if (!vif->netdev ||
vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
return;
while ((skb = skb_dequeue(&vif->high_pri_tx_queue))) {
qtnf_cmd_send_frame(vif, 0, QLINK_FRAME_TX_FLAG_8023,
0, skb->data, skb->len);
dev_kfree_skb_any(skb);
}
}
static struct qtnf_wmac *qtnf_core_mac_alloc(struct qtnf_bus *bus,
unsigned int macid)
{
struct platform_device *pdev = NULL;
struct qtnf_wmac *mac;
struct qtnf_vif *vif;
struct wiphy *wiphy;
unsigned int i;
if (bus->hw_info.num_mac > 1) {
pdev = platform_device_register_data(bus->dev,
dev_name(bus->dev),
macid, NULL, 0);
if (IS_ERR(pdev))
return ERR_PTR(-EINVAL);
}
wiphy = qtnf_wiphy_allocate(bus, pdev);
if (!wiphy) {
if (pdev)
platform_device_unregister(pdev);
return ERR_PTR(-ENOMEM);
}
mac = wiphy_priv(wiphy);
mac->macid = macid;
mac->pdev = pdev;
mac->bus = bus;
mutex_init(&mac->mac_lock);
INIT_DELAYED_WORK(&mac->scan_timeout, qtnf_mac_scan_timeout);
for (i = 0; i < QTNF_MAX_INTF; i++) {
vif = &mac->iflist[i];
memset(vif, 0, sizeof(*vif));
vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
vif->mac = mac;
vif->vifid = i;
qtnf_sta_list_init(&vif->sta_list);
INIT_WORK(&vif->high_pri_tx_work, qtnf_vif_send_data_high_pri);
skb_queue_head_init(&vif->high_pri_tx_queue);
}
qtnf_mac_init_primary_intf(mac);
bus->mac[macid] = mac;
return mac;
}
static const struct ethtool_ops qtnf_ethtool_ops = {
.get_drvinfo = cfg80211_get_drvinfo,
};
int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif,
const char *name, unsigned char name_assign_type)
{
struct wiphy *wiphy = priv_to_wiphy(mac);
struct net_device *dev;
void *qdev_vif;
int ret;
dev = alloc_netdev(sizeof(struct qtnf_vif *), name,
name_assign_type, ether_setup);
if (!dev)
return -ENOMEM;
vif->netdev = dev;
dev->netdev_ops = &qtnf_netdev_ops;
dev->needs_free_netdev = true;
dev_net_set(dev, wiphy_net(wiphy));
dev->ieee80211_ptr = &vif->wdev;
eth_hw_addr_set(dev, vif->mac_addr);
dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT;
dev->tx_queue_len = 100;
dev->ethtool_ops = &qtnf_ethtool_ops;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
if (qtnf_hwcap_is_set(&mac->bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE))
dev->needed_tailroom = sizeof(struct qtnf_frame_meta_info);
qdev_vif = netdev_priv(dev);
*((void **)qdev_vif) = vif;
SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
ret = cfg80211_register_netdevice(dev);
if (ret) {
free_netdev(dev);
vif->netdev = NULL;
}
return ret;
}
static void qtnf_core_mac_detach(struct qtnf_bus *bus, unsigned int macid)
{
struct qtnf_wmac *mac;
struct wiphy *wiphy;
struct qtnf_vif *vif;
unsigned int i;
enum nl80211_band band;
mac = bus->mac[macid];
if (!mac)
return;
wiphy = priv_to_wiphy(mac);
for (i = 0; i < QTNF_MAX_INTF; i++) {
vif = &mac->iflist[i];
rtnl_lock();
if (vif->netdev &&
vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
qtnf_virtual_intf_cleanup(vif->netdev);
qtnf_del_virtual_intf(wiphy, &vif->wdev);
}
rtnl_unlock();
qtnf_sta_list_free(&vif->sta_list);
}
if (mac->wiphy_registered)
wiphy_unregister(wiphy);
for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; ++band) {
if (!wiphy->bands[band])
continue;
kfree((__force void *)wiphy->bands[band]->iftype_data);
wiphy->bands[band]->n_iftype_data = 0;
kfree(wiphy->bands[band]->channels);
wiphy->bands[band]->n_channels = 0;
kfree(wiphy->bands[band]);
wiphy->bands[band] = NULL;
}
platform_device_unregister(mac->pdev);
qtnf_mac_iface_comb_free(mac);
qtnf_mac_ext_caps_free(mac);
kfree(mac->macinfo.wowlan);
kfree(mac->rd);
mac->rd = NULL;
wiphy_free(wiphy);
bus->mac[macid] = NULL;
}
static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid)
{
struct qtnf_wmac *mac;
struct qtnf_vif *vif;
int ret;
if (!(bus->hw_info.mac_bitmap & BIT(macid))) {
pr_info("MAC%u is not active in FW\n", macid);
return 0;
}
mac = qtnf_core_mac_alloc(bus, macid);
if (IS_ERR(mac)) {
pr_err("MAC%u allocation failed\n", macid);
return PTR_ERR(mac);
}
vif = qtnf_mac_get_base_vif(mac);
if (!vif) {
pr_err("MAC%u: primary VIF is not ready\n", macid);
ret = -EFAULT;
goto error;
}
ret = qtnf_cmd_send_add_intf(vif, vif->wdev.iftype,
vif->wdev.use_4addr, vif->mac_addr);
if (ret) {
pr_err("MAC%u: failed to add VIF\n", macid);
goto error;
}
ret = qtnf_cmd_get_mac_info(mac);
if (ret) {
pr_err("MAC%u: failed to get MAC info\n", macid);
goto error_del_vif;
}
if (is_zero_ether_addr(mac->bus->hw_id))
ether_addr_copy(mac->bus->hw_id, mac->macaddr);
ret = qtnf_mac_init_bands(mac);
if (ret) {
pr_err("MAC%u: failed to init bands\n", macid);
goto error_del_vif;
}
ret = qtnf_wiphy_register(&bus->hw_info, mac);
if (ret) {
pr_err("MAC%u: wiphy registration failed\n", macid);
goto error_del_vif;
}
mac->wiphy_registered = 1;
rtnl_lock();
wiphy_lock(priv_to_wiphy(mac));
ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM);
wiphy_unlock(priv_to_wiphy(mac));
rtnl_unlock();
if (ret) {
pr_err("MAC%u: failed to attach netdev\n", macid);
goto error_del_vif;
}
if (qtnf_hwcap_is_set(&bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE)) {
ret = qtnf_cmd_netdev_changeupper(vif, vif->netdev->ifindex);
if (ret)
goto error;
}
pr_debug("MAC%u initialized\n", macid);
return 0;
error_del_vif:
qtnf_cmd_send_del_intf(vif);
vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
error:
qtnf_core_mac_detach(bus, macid);
return ret;
}
bool qtnf_netdev_is_qtn(const struct net_device *ndev)
{
return ndev->netdev_ops == &qtnf_netdev_ops;
}
static int qtnf_check_br_ports(struct net_device *dev,
struct netdev_nested_priv *priv)
{
struct net_device *ndev = (struct net_device *)priv->data;
if (dev != ndev && netdev_port_same_parent_id(dev, ndev))
return -ENOTSUPP;
return 0;
}
static int qtnf_core_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
const struct netdev_notifier_changeupper_info *info;
struct netdev_nested_priv priv = {
.data = (void *)ndev,
};
struct net_device *brdev;
struct qtnf_vif *vif;
struct qtnf_bus *bus;
int br_domain;
int ret = 0;
if (!qtnf_netdev_is_qtn(ndev))
return NOTIFY_DONE;
if (!net_eq(dev_net(ndev), &init_net))
return NOTIFY_OK;
vif = qtnf_netdev_get_priv(ndev);
bus = vif->mac->bus;
switch (event) {
case NETDEV_CHANGEUPPER:
info = ptr;
brdev = info->upper_dev;
if (!netif_is_bridge_master(brdev))
break;
pr_debug("[VIF%u.%u] change bridge: %s %s\n",
vif->mac->macid, vif->vifid, netdev_name(brdev),
info->linking ? "add" : "del");
if (IS_ENABLED(CONFIG_NET_SWITCHDEV) &&
qtnf_hwcap_is_set(&bus->hw_info,
QLINK_HW_CAPAB_HW_BRIDGE)) {
if (info->linking)
br_domain = brdev->ifindex;
else
br_domain = ndev->ifindex;
ret = qtnf_cmd_netdev_changeupper(vif, br_domain);
} else {
ret = netdev_walk_all_lower_dev(brdev,
qtnf_check_br_ports,
&priv);
}
break;
default:
break;
}
return notifier_from_errno(ret);
}
int qtnf_core_attach(struct qtnf_bus *bus)
{
unsigned int i;
int ret;
qtnf_trans_init(bus);
qtnf_bus_data_rx_start(bus);
bus->workqueue = alloc_ordered_workqueue("QTNF_BUS", 0);
if (!bus->workqueue) {
pr_err("failed to alloc main workqueue\n");
ret = -ENOMEM;
goto error;
}
bus->hprio_workqueue = alloc_workqueue("QTNF_HPRI",
WQ_HIGHPRI | WQ_PERCPU, 0);
if (!bus->hprio_workqueue) {
pr_err("failed to alloc high prio workqueue\n");
ret = -ENOMEM;
goto error;
}
INIT_WORK(&bus->event_work, qtnf_event_work_handler);
ret = qtnf_cmd_send_init_fw(bus);
if (ret) {
pr_err("failed to init FW: %d\n", ret);
goto error;
}
if (QLINK_VER_MAJOR(bus->hw_info.ql_proto_ver) !=
QLINK_PROTO_VER_MAJOR) {
pr_err("qlink driver vs FW version mismatch: %u vs %u\n",
QLINK_PROTO_VER_MAJOR,
QLINK_VER_MAJOR(bus->hw_info.ql_proto_ver));
ret = -EPROTONOSUPPORT;
goto error;
}
bus->fw_state = QTNF_FW_STATE_ACTIVE;
ret = qtnf_cmd_get_hw_info(bus);
if (ret) {
pr_err("failed to get HW info: %d\n", ret);
goto error;
}
if (qtnf_hwcap_is_set(&bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE) &&
bus->bus_ops->data_tx_use_meta_set)
bus->bus_ops->data_tx_use_meta_set(bus, true);
if (bus->hw_info.num_mac > QTNF_MAX_MAC) {
pr_err("no support for number of MACs=%u\n",
bus->hw_info.num_mac);
ret = -ERANGE;
goto error;
}
for (i = 0; i < bus->hw_info.num_mac; i++) {
ret = qtnf_core_mac_attach(bus, i);
if (ret) {
pr_err("MAC%u: attach failed: %d\n", i, ret);
goto error;
}
}
bus->netdev_nb.notifier_call = qtnf_core_netdevice_event;
ret = register_netdevice_notifier(&bus->netdev_nb);
if (ret) {
pr_err("failed to register netdev notifier: %d\n", ret);
goto error;
}
bus->fw_state = QTNF_FW_STATE_RUNNING;
return 0;
error:
qtnf_core_detach(bus);
return ret;
}
EXPORT_SYMBOL_GPL(qtnf_core_attach);
void qtnf_core_detach(struct qtnf_bus *bus)
{
unsigned int macid;
unregister_netdevice_notifier(&bus->netdev_nb);
qtnf_bus_data_rx_stop(bus);
for (macid = 0; macid < QTNF_MAX_MAC; macid++)
qtnf_core_mac_detach(bus, macid);
if (qtnf_fw_is_up(bus))
qtnf_cmd_send_deinit_fw(bus);
bus->fw_state = QTNF_FW_STATE_DETACHED;
if (bus->workqueue) {
destroy_workqueue(bus->workqueue);
bus->workqueue = NULL;
}
if (bus->hprio_workqueue) {
destroy_workqueue(bus->hprio_workqueue);
bus->hprio_workqueue = NULL;
}
qtnf_trans_free(bus);
}
EXPORT_SYMBOL_GPL(qtnf_core_detach);
static inline int qtnf_is_frame_meta_magic_valid(struct qtnf_frame_meta_info *m)
{
return m->magic_s == HBM_FRAME_META_MAGIC_PATTERN_S &&
m->magic_e == HBM_FRAME_META_MAGIC_PATTERN_E;
}
struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb)
{
struct qtnf_frame_meta_info *meta;
struct net_device *ndev = NULL;
struct qtnf_wmac *mac;
struct qtnf_vif *vif;
if (unlikely(bus->fw_state != QTNF_FW_STATE_RUNNING))
return NULL;
meta = (struct qtnf_frame_meta_info *)
(skb_tail_pointer(skb) - sizeof(*meta));
if (unlikely(!qtnf_is_frame_meta_magic_valid(meta))) {
pr_err_ratelimited("invalid magic 0x%x:0x%x\n",
meta->magic_s, meta->magic_e);
goto out;
}
if (unlikely(meta->macid >= QTNF_MAX_MAC)) {
pr_err_ratelimited("invalid mac(%u)\n", meta->macid);
goto out;
}
if (unlikely(meta->ifidx >= QTNF_MAX_INTF)) {
pr_err_ratelimited("invalid vif(%u)\n", meta->ifidx);
goto out;
}
mac = bus->mac[meta->macid];
if (unlikely(!mac)) {
pr_err_ratelimited("mac(%d) does not exist\n", meta->macid);
goto out;
}
vif = &mac->iflist[meta->ifidx];
if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
pr_err_ratelimited("vif(%u) does not exists\n", meta->ifidx);
goto out;
}
ndev = vif->netdev;
if (unlikely(!ndev)) {
pr_err_ratelimited("netdev for wlan%u.%u does not exists\n",
meta->macid, meta->ifidx);
goto out;
}
__skb_trim(skb, skb->len - sizeof(*meta));
qtnfmac_switch_mark_skb_flooded(skb);
out:
return ndev;
}
EXPORT_SYMBOL_GPL(qtnf_classify_skb);
void qtnf_wake_all_queues(struct net_device *ndev)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
struct qtnf_wmac *mac;
struct qtnf_bus *bus;
int macid;
int i;
if (unlikely(!vif || !vif->mac || !vif->mac->bus))
return;
bus = vif->mac->bus;
for (macid = 0; macid < QTNF_MAX_MAC; macid++) {
if (!(bus->hw_info.mac_bitmap & BIT(macid)))
continue;
mac = bus->mac[macid];
for (i = 0; i < QTNF_MAX_INTF; i++) {
vif = &mac->iflist[i];
if (vif->netdev && netif_queue_stopped(vif->netdev))
netif_tx_wake_all_queues(vif->netdev);
}
}
}
EXPORT_SYMBOL_GPL(qtnf_wake_all_queues);
struct dentry *qtnf_get_debugfs_dir(void)
{
return qtnf_debugfs_dir;
}
EXPORT_SYMBOL_GPL(qtnf_get_debugfs_dir);
static int __init qtnf_core_register(void)
{
qtnf_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (IS_ERR(qtnf_debugfs_dir))
qtnf_debugfs_dir = NULL;
return 0;
}
static void __exit qtnf_core_exit(void)
{
debugfs_remove(qtnf_debugfs_dir);
}
module_init(qtnf_core_register);
module_exit(qtnf_core_exit);
MODULE_AUTHOR("Quantenna Communications");
MODULE_DESCRIPTION("Quantenna 802.11 wireless LAN FullMAC driver.");
MODULE_LICENSE("GPL");
