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bl_main.c
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/**
******************************************************************************
*
* @file bl_main.c
*
* @brief Entry point of the BL driver
*
* Copyright (C) BouffaloLab 2017-2018
*
******************************************************************************
*/
#include <linux/version.h>
#include <linux/module.h>
#include <linux/inetdevice.h>
#include <linux/of.h>
#include <net/cfg80211.h>
#include <linux/etherdevice.h>
#include "bl_defs.h"
#include "bl_msg_tx.h"
#include "bl_tx.h"
#include "hal_desc.h"
#include "bl_debugfs.h"
#include "bl_cfgfile.h"
#include "bl_irqs.h"
#include "bl_version.h"
#include "bl_events.h"
#include "bl_sdio.h"
#define RW_DRV_DESCRIPTION "BouffaloLab 11nac driver for Linux cfg80211"
#define RW_DRV_COPYRIGHT "Copyright(c) 2015-2016 BouffaloLab"
#define RW_DRV_AUTHOR "BouffaloLab S.A.S"
#define BL_PRINT_CFM_ERR(req) \
printk(KERN_CRIT "%s: Status Error(%d)\n", #req, (&req##_cfm)->status)
#define BL_HT_CAPABILITIES \
{ \
.ht_supported = true, \
.cap = 0, \
.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, \
.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, \
.mcs = { \
.rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, \
.rx_highest = cpu_to_le16(65), \
.tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
}, \
}
#define BL_VHT_CAPABILITIES \
{ \
.vht_supported = false, \
.cap = \
(7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT),\
.vht_mcs = { \
.rx_mcs_map = cpu_to_le16( \
IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 14), \
.tx_mcs_map = cpu_to_le16( \
IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | \
IEEE80211_VHT_MCS_NOT_SUPPORTED << 14), \
} \
}
#define RATE(_bitrate, _hw_rate, _flags) { \
.bitrate = (_bitrate), \
.flags = (_flags), \
.hw_value = (_hw_rate), \
}
#define CHAN(_freq) { \
.center_freq = (_freq), \
.max_power = 30, /* FIXME */ \
}
static struct ieee80211_rate bl_ratetable[] = {
RATE(10, 0x00, 0),
RATE(20, 0x01, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(55, 0x02, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(110, 0x03, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(60, 0x04, 0),
RATE(90, 0x05, 0),
RATE(120, 0x06, 0),
RATE(180, 0x07, 0),
RATE(240, 0x08, 0),
RATE(360, 0x09, 0),
RATE(480, 0x0A, 0),
RATE(540, 0x0B, 0),
};
/* The channels indexes here are not used anymore */
static struct ieee80211_channel bl_2ghz_channels[] = {
CHAN(2412),
CHAN(2417),
CHAN(2422),
CHAN(2427),
CHAN(2432),
CHAN(2437),
CHAN(2442),
CHAN(2447),
CHAN(2452),
CHAN(2457),
CHAN(2462),
CHAN(2467),
CHAN(2472),
CHAN(2484),
};
static struct ieee80211_supported_band bl_band_2GHz = {
.channels = bl_2ghz_channels,
.n_channels = ARRAY_SIZE(bl_2ghz_channels),
.bitrates = bl_ratetable,
.n_bitrates = ARRAY_SIZE(bl_ratetable),
.ht_cap = BL_HT_CAPABILITIES,
};
static struct ieee80211_iface_limit bl_limits[] = {
{ .max = NX_VIRT_DEV_MAX, .types = BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_STATION)}
};
static struct ieee80211_iface_limit bl_limits_dfs[] = {
{ .max = NX_VIRT_DEV_MAX, .types = BIT(NL80211_IFTYPE_AP)}
};
static const struct ieee80211_iface_combination bl_combinations[] = {
{
.limits = bl_limits,
.n_limits = ARRAY_SIZE(bl_limits),
.num_different_channels = NX_CHAN_CTXT_CNT,
.max_interfaces = NX_VIRT_DEV_MAX,
},
/* Keep this combination as the last one */
{
.limits = bl_limits_dfs,
.n_limits = ARRAY_SIZE(bl_limits_dfs),
.num_different_channels = 1,
.max_interfaces = NX_VIRT_DEV_MAX,
.radar_detect_widths = (BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40) |
BIT(NL80211_CHAN_WIDTH_80)),
}
};
/* There isn't a lot of sense in it, but you can transmit anything you like */
static struct ieee80211_txrx_stypes
bl_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
[NL80211_IFTYPE_STATION] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
[NL80211_IFTYPE_AP] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
BIT(IEEE80211_STYPE_DISASSOC >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4) |
BIT(IEEE80211_STYPE_DEAUTH >> 4) |
BIT(IEEE80211_STYPE_ACTION >> 4),
},
[NL80211_IFTYPE_AP_VLAN] = {
/* copy AP */
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
BIT(IEEE80211_STYPE_DISASSOC >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4) |
BIT(IEEE80211_STYPE_DEAUTH >> 4) |
BIT(IEEE80211_STYPE_ACTION >> 4),
},
[NL80211_IFTYPE_P2P_CLIENT] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
[NL80211_IFTYPE_P2P_GO] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
BIT(IEEE80211_STYPE_DISASSOC >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4) |
BIT(IEEE80211_STYPE_DEAUTH >> 4) |
BIT(IEEE80211_STYPE_ACTION >> 4),
},
[NL80211_IFTYPE_P2P_DEVICE] = {
.tx = 0xffff,
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
},
};
static u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
0, // reserved entries to enable AES-CMAC and/or SMS4
0,
};
#define NB_RESERVED_CIPHER 2;
static const int bl_ac2hwq[1][NL80211_NUM_ACS] = {
{
[NL80211_TXQ_Q_VO] = BL_HWQ_VO,
[NL80211_TXQ_Q_VI] = BL_HWQ_VI,
[NL80211_TXQ_Q_BE] = BL_HWQ_BE,
[NL80211_TXQ_Q_BK] = BL_HWQ_BK
}
};
const int bl_tid2hwq[IEEE80211_NUM_TIDS] = {
BL_HWQ_BE,
BL_HWQ_BK,
BL_HWQ_BK,
BL_HWQ_BE,
BL_HWQ_VI,
BL_HWQ_VI,
BL_HWQ_VO,
BL_HWQ_VO,
/* TID_8 is used for management frames */
BL_HWQ_VO,
/* At the moment, all others TID are mapped to BE */
BL_HWQ_BE,
BL_HWQ_BE,
BL_HWQ_BE,
BL_HWQ_BE,
BL_HWQ_BE,
BL_HWQ_BE,
BL_HWQ_BE,
};
static const int bl_hwq2uapsd[NL80211_NUM_ACS] = {
[BL_HWQ_VO] = IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
[BL_HWQ_VI] = IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
[BL_HWQ_BE] = IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
[BL_HWQ_BK] = IEEE80211_WMM_IE_STA_QOSINFO_AC_BK,
};
/*********************************************************************
* helper
*********************************************************************/
struct bl_sta *bl_get_sta(struct bl_hw *bl_hw, const u8 *mac_addr)
{
int i;
for (i = 0; i < NX_REMOTE_STA_MAX; i++) {
struct bl_sta *sta = &bl_hw->sta_table[i];
if (sta->valid && (memcmp(mac_addr, &sta->mac_addr, 6) == 0))
return sta;
}
return NULL;
}
void bl_enable_wapi(struct bl_hw *bl_hw)
{
cipher_suites[bl_hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_SMS4;
bl_hw->wiphy->n_cipher_suites ++;
bl_hw->wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
}
void bl_enable_mfp(struct bl_hw *bl_hw)
{
cipher_suites[bl_hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC;
bl_hw->wiphy->n_cipher_suites ++;
}
u8 *bl_build_bcn(struct bl_bcn *bcn, struct cfg80211_beacon_data *new)
{
u8 *buf, *pos;
if (new->head) {
u8 *head = kmalloc(new->head_len, GFP_KERNEL);
if (!head)
return NULL;
if (bcn->head)
kfree(bcn->head);
bcn->head = head;
bcn->head_len = new->head_len;
memcpy(bcn->head, new->head, new->head_len);
}
if (new->tail) {
u8 *tail = kmalloc(new->tail_len, GFP_KERNEL);
if (!tail)
return NULL;
if (bcn->tail)
kfree(bcn->tail);
bcn->tail = tail;
bcn->tail_len = new->tail_len;
memcpy(bcn->tail, new->tail, new->tail_len);
}
if (!bcn->head)
return NULL;
bcn->tim_len = 6;
bcn->len = bcn->head_len + bcn->tail_len + bcn->ies_len + bcn->tim_len;
buf = kmalloc(bcn->len, GFP_KERNEL);
if (!buf)
return NULL;
// Build the beacon buffer
pos = buf;
memcpy(pos, bcn->head, bcn->head_len);
pos += bcn->head_len;
*pos++ = WLAN_EID_TIM;
*pos++ = 4;
*pos++ = 0;
*pos++ = bcn->dtim;
*pos++ = 0;
*pos++ = 0;
if (bcn->tail) {
memcpy(pos, bcn->tail, bcn->tail_len);
pos += bcn->tail_len;
}
if (bcn->ies) {
memcpy(pos, bcn->ies, bcn->ies_len);
}
return buf;
}
static void bl_del_bcn(struct bl_bcn *bcn)
{
if (bcn->head) {
kfree(bcn->head);
bcn->head = NULL;
}
bcn->head_len = 0;
if (bcn->tail) {
kfree(bcn->tail);
bcn->tail = NULL;
}
bcn->tail_len = 0;
if (bcn->ies) {
kfree(bcn->ies);
bcn->ies = NULL;
}
bcn->ies_len = 0;
bcn->tim_len = 0;
bcn->dtim = 0;
bcn->len = 0;
}
/**
* Link channel ctxt to a vif and thus increments count for this context.
*/
void bl_chanctx_link(struct bl_vif *vif, u8 ch_idx,
struct cfg80211_chan_def *chandef)
{
struct bl_chanctx *ctxt;
if (ch_idx >= NX_CHAN_CTXT_CNT) {
WARN(1, "Invalid channel ctxt id %d", ch_idx);
return;
}
vif->ch_index = ch_idx;
ctxt = &vif->bl_hw->chanctx_table[ch_idx];
ctxt->count++;
// For now chandef is NULL for STATION interface
if (chandef) {
if (!ctxt->chan_def.chan)
ctxt->chan_def = *chandef;
else {
// TODO. check that chandef is the same as the one already
// set for this ctxt
}
}
}
/**
* Unlink channel ctxt from a vif and thus decrements count for this context
*/
void bl_chanctx_unlink(struct bl_vif *vif)
{
struct bl_chanctx *ctxt;
if (vif->ch_index == BL_CH_NOT_SET)
return;
ctxt = &vif->bl_hw->chanctx_table[vif->ch_index];
if (ctxt->count == 0) {
WARN(1, "Chan ctxt ref count is already 0");
} else {
ctxt->count--;
}
if (ctxt->count == 0) {
/* set chan to null, so that if this ctxt is relinked to a vif that
don't have channel information, don't use wrong information */
ctxt->chan_def.chan = NULL;
}
vif->ch_index = BL_CH_NOT_SET;
}
int bl_chanctx_valid(struct bl_hw *bl_hw, u8 ch_idx)
{
if (ch_idx >= NX_CHAN_CTXT_CNT ||
bl_hw->chanctx_table[ch_idx].chan_def.chan == NULL) {
return 0;
}
return 1;
}
static void bl_del_csa(struct bl_vif *vif)
{
struct bl_csa *csa = vif->ap.csa;
if (!csa)
return;
if (csa->dma.buf) {
kfree(csa->dma.buf);
}
bl_del_bcn(&csa->bcn);
kfree(csa);
vif->ap.csa = NULL;
}
static void bl_csa_finish(struct work_struct *ws)
{
struct bl_csa *csa = container_of(ws, struct bl_csa, work);
struct bl_vif *vif = csa->vif;
struct bl_hw *bl_hw = vif->bl_hw;
int error = csa->status;
if (!error)
error = bl_send_bcn_change(bl_hw, vif->vif_index, csa->dma.buf,
csa->bcn.len, csa->bcn.head_len,
csa->bcn.tim_len, NULL);
if (error)
cfg80211_stop_iface(bl_hw->wiphy, &vif->wdev, GFP_KERNEL);
else {
bl_chanctx_unlink(vif);
bl_chanctx_link(vif, csa->ch_idx, &csa->chandef);
spin_lock_bh(&bl_hw->cmd_mgr.lock);
if (bl_hw->cur_chanctx == csa->ch_idx) {
bl_txq_vif_start(vif, BL_TXQ_STOP_CHAN, bl_hw);
} else
bl_txq_vif_stop(vif, BL_TXQ_STOP_CHAN, bl_hw);
spin_unlock_bh(&bl_hw->cmd_mgr.lock);
cfg80211_ch_switch_notify(vif->ndev, &csa->chandef);
}
bl_del_csa(vif);
}
/*********************************************************************
* netdev callbacks
********************************************************************/
/**
* int (*ndo_open)(struct net_device *dev);
* This function is called when network device transistions to the up
* state.
*
* - Start FW if this is the first interface opened
* - Add interface at fw level
*/
static int bl_open(struct net_device *dev)
{
struct bl_vif *bl_vif = netdev_priv(dev);
struct bl_hw *bl_hw = bl_vif->bl_hw;
struct mm_add_if_cfm add_if_cfm;
int error = 0;
BL_DBG(BL_FN_ENTRY_STR);
// Check if it is the first opened VIF
if (bl_hw->vif_started == 0)
{
// Start the FW
if ((error = bl_send_start(bl_hw)))
return error;
/* Device is now started */
set_bit(BL_DEV_STARTED, &bl_hw->drv_flags);
}
if (BL_VIF_TYPE(bl_vif) == NL80211_IFTYPE_AP_VLAN) {
/* For AP_vlan use same fw and drv indexes. We ensure that this index
will not be used by fw for another vif by taking index >= NX_VIRT_DEV_MAX */
add_if_cfm.inst_nbr = bl_vif->drv_vif_index;
netif_tx_stop_all_queues(dev);
} else {
/* Forward the information to the LMAC,
* p2p value not used in FMAC configuration, iftype is sufficient */
if ((error = bl_send_add_if(bl_hw, dev->dev_addr,
BL_VIF_TYPE(bl_vif), false, &add_if_cfm)))
return error;
if (add_if_cfm.status != 0) {
BL_PRINT_CFM_ERR(add_if);
return -EIO;
}
}
/* Save the index retrieved from LMAC */
bl_vif->vif_index = add_if_cfm.inst_nbr;
bl_vif->up = true;
bl_hw->vif_started++;
bl_hw->vif_table[add_if_cfm.inst_nbr] = bl_vif;
netif_carrier_off(dev);
return error;
}
/**
* int (*ndo_stop)(struct net_device *dev);
* This function is called when network device transistions to the down
* state.
*
* - Remove interface at fw level
* - Reset FW if this is the last interface opened
*/
static int bl_close(struct net_device *dev)
{
struct bl_vif *bl_vif = netdev_priv(dev);
struct bl_hw *bl_hw = bl_vif->bl_hw;
struct cfg80211_scan_info info = {
.aborted = true,
};
BL_DBG(BL_FN_ENTRY_STR);
/* Abort scan request on the vif */
if (bl_hw->scan_request &&
bl_hw->scan_request->wdev == &bl_vif->wdev) {
cfg80211_scan_done(bl_hw->scan_request, &info);
bl_hw->scan_request = NULL;
}
bl_send_remove_if(bl_hw, bl_vif->vif_index);
if (bl_hw->roc_elem && (bl_hw->roc_elem->wdev == &bl_vif->wdev)) {
/* Initialize RoC element pointer to NULL, indicate that RoC can be started */
bl_hw->roc_elem = NULL;
}
/* Ensure that we won't process disconnect ind */
spin_lock_bh(&bl_hw->cmd_mgr.lock);
bl_vif->up = false;
if (netif_carrier_ok(dev)) {
if (BL_VIF_TYPE(bl_vif) == NL80211_IFTYPE_STATION ||
BL_VIF_TYPE(bl_vif) == NL80211_IFTYPE_P2P_CLIENT) {
cfg80211_disconnected(dev, WLAN_REASON_DEAUTH_LEAVING,
NULL, 0, true, GFP_ATOMIC);
netif_tx_stop_all_queues(dev);
netif_carrier_off(dev);
} else if (BL_VIF_TYPE(bl_vif) == NL80211_IFTYPE_AP_VLAN) {
netif_carrier_off(dev);
} else {
netdev_warn(dev, "AP not stopped when disabling interface");
}
}
spin_unlock_bh(&bl_hw->cmd_mgr.lock);
bl_hw->vif_table[bl_vif->vif_index] = NULL;
bl_hw->vif_started--;
if (bl_hw->vif_started == 0) {
/* This also lets both ipc sides remain in sync before resetting */
bl_ipc_tx_drain(bl_hw);
bl_send_reset(bl_hw);
// Set parameters to firmware
bl_send_me_config_req(bl_hw);
// Set channel parameters to firmware
bl_send_me_chan_config_req(bl_hw);
clear_bit(BL_DEV_STARTED, &bl_hw->drv_flags);
}
return 0;
}
/**
* struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
* Called when a user wants to get the network device usage
* statistics. Drivers must do one of the following:
* 1. Define @ndo_get_stats64 to fill in a zero-initialised
* rtnl_link_stats64 structure passed by the caller.
* 2. Define @ndo_get_stats to update a net_device_stats structure
* (which should normally be dev->stats) and return a pointer to
* it. The structure may be changed asynchronously only if each
* field is written atomically.
* 3. Update dev->stats asynchronously and atomically, and define
* neither operation.
*/
static struct net_device_stats *bl_get_stats(struct net_device *dev)
{
struct bl_vif *vif = netdev_priv(dev);
return &vif->net_stats;
}
/**
* int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
* This function is called when the Media Access Control address
* needs to be changed. If this interface is not defined, the
* mac address can not be changed.
*/
static int bl_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr *sa = addr;
int ret;
ret = eth_mac_addr(dev, sa);
return ret;
}
static const struct net_device_ops bl_netdev_ops = {
.ndo_open = bl_open,
.ndo_stop = bl_close,
.ndo_start_xmit = bl_start_xmit,
.ndo_get_stats = bl_get_stats,
.ndo_select_queue = bl_select_queue,
.ndo_set_mac_address = bl_set_mac_address
};
static void bl_netdev_setup(struct net_device *dev)
{
ether_setup(dev);
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->netdev_ops = &bl_netdev_ops;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
dev->needs_free_netdev = true;
#else
dev->destructor = free_netdev;
#endif
dev->watchdog_timeo = BL_TX_LIFETIME_MS;
dev->needed_headroom = sizeof(struct bl_txhdr) + BL_SWTXHDR_ALIGN_SZ;
#ifdef CONFIG_BL_AMSDUS_TX
dev->needed_headroom = max(dev->needed_headroom,
(unsigned short)(sizeof(struct bl_amsdu_txhdr)
+ sizeof(struct ethhdr) + 4
+ sizeof(rfc1042_header) + 2));
#endif /* CONFIG_BL_AMSDUS_TX */
dev->hw_features = 0;
}
/*********************************************************************
* Cfg80211 callbacks (and helper)
*********************************************************************/
static struct wireless_dev *bl_interface_add(struct bl_hw *bl_hw,
const char *name,
enum nl80211_iftype type,
struct vif_params *params)
{
struct net_device *ndev;
struct bl_vif *vif;
int min_idx, max_idx;
int vif_idx = -1;
int i;
BL_DBG(BL_FN_ENTRY_STR);
// Look for an available VIF
if (type == NL80211_IFTYPE_AP_VLAN) {
min_idx = NX_VIRT_DEV_MAX;
max_idx = NX_VIRT_DEV_MAX + NX_REMOTE_STA_MAX;
} else {
min_idx = 0;
max_idx = NX_VIRT_DEV_MAX;
}
for (i = min_idx; i < max_idx; i++) {
if ((bl_hw->avail_idx_map) & BIT(i)) {
vif_idx = i;
break;
}
}
if (vif_idx < 0)
return NULL;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)
ndev = alloc_netdev_mqs(sizeof(*vif), name, NET_NAME_UNKNOWN,
bl_netdev_setup, NX_NB_NDEV_TXQ, 1);
#else
ndev = alloc_netdev_mqs(sizeof(*vif), name, bl_netdev_setup,
NX_NB_NDEV_TXQ, 1);
#endif
if (!ndev)
return NULL;
vif = netdev_priv(ndev);
ndev->ieee80211_ptr = &vif->wdev;
vif->wdev.wiphy = bl_hw->wiphy;
vif->bl_hw = bl_hw;
vif->ndev = ndev;
vif->drv_vif_index = vif_idx;
SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
vif->wdev.netdev = ndev;
vif->wdev.iftype = type;
vif->up = false;
vif->ch_index = BL_CH_NOT_SET;
memset(&vif->net_stats, 0, sizeof(vif->net_stats));
switch (type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
vif->sta.ap = NULL;
vif->sta.tdls_sta = NULL;
break;
case NL80211_IFTYPE_MESH_POINT:
INIT_LIST_HEAD(&vif->ap.mpath_list);
INIT_LIST_HEAD(&vif->ap.proxy_list);
vif->ap.create_path = false;
vif->ap.generation = 0;
// no break
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
INIT_LIST_HEAD(&vif->ap.sta_list);
memset(&vif->ap.bcn, 0, sizeof(vif->ap.bcn));
break;
case NL80211_IFTYPE_AP_VLAN:
{
struct bl_vif *master_vif;
bool found = false;
list_for_each_entry(master_vif, &bl_hw->vifs, list) {
if ((BL_VIF_TYPE(master_vif) == NL80211_IFTYPE_AP) &&
!(!memcmp(master_vif->ndev->dev_addr, params->macaddr,
ETH_ALEN))) {
found=true;
break;
}
}
if (!found)
goto err;
vif->ap_vlan.master = master_vif;
vif->ap_vlan.sta_4a = NULL;
break;
}
default:
break;
}
if (type == NL80211_IFTYPE_AP_VLAN)
memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN);
else {
memcpy(ndev->dev_addr, bl_hw->wiphy->perm_addr, ETH_ALEN);
ndev->dev_addr[5] ^= vif_idx;
}
if (params) {
vif->use_4addr = params->use_4addr;
ndev->ieee80211_ptr->use_4addr = params->use_4addr;
} else
vif->use_4addr = false;
if (register_netdevice(ndev))
goto err;
list_add_tail(&vif->list, &bl_hw->vifs);
bl_hw->avail_idx_map &= ~BIT(vif_idx);
return &vif->wdev;
err:
free_netdev(ndev);
return NULL;
}
/*
* @brief Retrieve the bl_sta object allocated for a given MAC address
* and a given role.
*/
static struct bl_sta *bl_retrieve_sta(struct bl_hw *bl_hw,
struct bl_vif *bl_vif, u8 *addr,
__le16 fc, bool ap)
{
if (ap) {
/* only deauth, disassoc and action are bufferable MMPDUs */
bool bufferable = ieee80211_is_deauth(fc) ||
ieee80211_is_disassoc(fc) ||
ieee80211_is_action(fc);
/* Check if the packet is bufferable or not */
if (bufferable)
{
/* Check if address is a broadcast or a multicast address */
if (is_broadcast_ether_addr(addr) || is_multicast_ether_addr(addr)) {
/* Returned STA pointer */
struct bl_sta *bl_sta = &bl_hw->sta_table[bl_vif->ap.bcmc_index];
if (bl_sta->valid)
return bl_sta;
} else {
/* Returned STA pointer */
struct bl_sta *bl_sta;
/* Go through list of STAs linked with the provided VIF */
list_for_each_entry(bl_sta, &bl_vif->ap.sta_list, list) {
if (bl_sta->valid &&
ether_addr_equal(bl_sta->mac_addr, addr)) {
/* Return the found STA */
return bl_sta;
}
}
}
}
} else {
return bl_vif->sta.ap;
}
return NULL;
}
/**
* @add_virtual_intf: create a new virtual interface with the given name,
* must set the struct wireless_dev's iftype. Beware: You must create
* the new netdev in the wiphy's network namespace! Returns the struct
* wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
* also set the address member in the wdev.
*/
static struct wireless_dev *bl_cfg80211_add_iface(struct wiphy *wiphy,
const char *name,
unsigned char name_assign_type,
enum nl80211_iftype type,
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)
u32 *flags,
#endif
struct vif_params *params)
{
struct bl_hw *bl_hw = wiphy_priv(wiphy);
struct wireless_dev *wdev;
wdev = bl_interface_add(bl_hw, name, type, params);
return wdev;
}
/**
* @del_virtual_intf: remove the virtual interface
*/
static int bl_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct net_device *dev = wdev->netdev;
struct bl_vif *bl_vif = netdev_priv(dev);
struct bl_hw *bl_hw = wiphy_priv(wiphy);
netdev_info(dev, "Remove Interface");
if (dev->reg_state == NETREG_REGISTERED) {
/* Will call bl_close if interface is UP */
unregister_netdevice(dev);
}
list_del(&bl_vif->list);
bl_hw->avail_idx_map |= BIT(bl_vif->drv_vif_index);
bl_vif->ndev = NULL;
/* Clear the priv in adapter */
dev->ieee80211_ptr = NULL;
return 0;
}
/**
* @change_virtual_intf: change type/configuration of virtual interface,
* keep the struct wireless_dev's iftype updated.
*/
static int bl_cfg80211_change_iface(struct wiphy *wiphy,
struct net_device *dev,
enum nl80211_iftype type,
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)
u32 *flags,
#endif
struct vif_params *params)
{
struct bl_vif *vif = netdev_priv(dev);
if (vif->up)
return (-EBUSY);
switch (type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
vif->sta.ap = NULL;
vif->sta.tdls_sta = NULL;
break;
case NL80211_IFTYPE_MESH_POINT:
INIT_LIST_HEAD(&vif->ap.mpath_list);
INIT_LIST_HEAD(&vif->ap.proxy_list);
vif->ap.create_path = false;
vif->ap.generation = 0;
// no break
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
INIT_LIST_HEAD(&vif->ap.sta_list);
memset(&vif->ap.bcn, 0, sizeof(vif->ap.bcn));
break;
case NL80211_IFTYPE_AP_VLAN:
return -EPERM;
default:
break;
}
vif->wdev.iftype = type;
if (params->use_4addr != -1)
vif->use_4addr = params->use_4addr;
return 0;
}
/**
* @scan: Request to do a scan. If returning zero, the scan request is given
* the driver, and will be valid until passed to cfg80211_scan_done().
* For scan results, call cfg80211_inform_bss(); you can call this outside
* the scan/scan_done bracket too.
*/
static int bl_cfg80211_scan(struct wiphy *wiphy,
struct cfg80211_scan_request *request)
{
struct bl_hw *bl_hw = wiphy_priv(wiphy);
struct bl_vif *bl_vif = container_of(request->wdev, struct bl_vif,
wdev);
int error;
BL_DBG(BL_FN_ENTRY_STR);
if ((error = bl_send_scanu_req(bl_hw, bl_vif, request)))
return error;
bl_hw->scan_request = request;
return 0;
}
/**
* @add_key: add a key with the given parameters. @mac_addr will be %NULL
* when adding a group key.
*/
static int bl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index, bool pairwise, const u8 *mac_addr,
struct key_params *params)
{
struct bl_hw *bl_hw = wiphy_priv(wiphy);
struct bl_vif *vif = netdev_priv(netdev);
int i, error = 0;
struct mm_key_add_cfm key_add_cfm;
u8_l cipher = 0;
struct bl_sta *sta = NULL;
struct bl_key *bl_key;
BL_DBG(BL_FN_ENTRY_STR);
if (mac_addr) {
sta = bl_get_sta(bl_hw, mac_addr);
if (!sta)
return -EINVAL;
bl_key = &sta->key;
}
else
bl_key = &vif->key[key_index];
/* Retrieve the cipher suite selector */