ath9k: Add data structure for supporting virtual radio/wiphy operation
This is the initial step in allowing ath9k to register multiple
virtual radios (wiphys). The goal of virtual radios is to allow the
same radio to be shared for multiple virtual interfaces that may
operate on different channels. The mac80211 virtual interface support
is designed only for single channel operation and as such, it is not
suitable for this type of use. Anyway, it can be used on top of the
virtual radio concept, if desired (e.g., use two virtual radios to
handle two channels and then add multiple mac80211 virtual interfaces
on top of each virtual radio).
The new struct ath_wiphy is now registered as the driver data
structure for wiphy. This structure has a pointer to the shared (among
virtual wiphys of the same physical radio) struct ath_softc data. The
primary wiphy maintains the allocated memory for ath_softc. Secondary
(virtual) wiphys will only allocate the new ath_wiphy structure.
Registration of secondary wiphys is added in a separate patch.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/ahb.c b/drivers/net/wireless/ath9k/ahb.c
index 391c9fd..bc562bd 100644
--- a/drivers/net/wireless/ath9k/ahb.c
+++ b/drivers/net/wireless/ath9k/ahb.c
@@ -96,7 +96,8 @@
irq = res->start;
- hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
+ hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
+ sizeof(struct ath_softc), &ath9k_ops);
if (hw == NULL) {
dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
ret = -ENOMEM;
@@ -106,7 +107,11 @@
SET_IEEE80211_DEV(hw, &pdev->dev);
platform_set_drvdata(pdev, hw);
- sc = hw->priv;
+ aphy = hw->priv;
+ sc = (struct ath_softc *) (aphy + 1);
+ aphy->sc = sc;
+ aphy->hw = hw;
+ sc->pri_wiphy = aphy;
sc->hw = hw;
sc->dev = &pdev->dev;
sc->mem = mem;
@@ -156,7 +161,8 @@
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
if (hw) {
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
ath_cleanup(sc);
platform_set_drvdata(pdev, NULL);
diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h
index 1598bac..41eeac4 100644
--- a/drivers/net/wireless/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath9k/ath9k.h
@@ -549,9 +549,12 @@
bool (*eeprom_read)(struct ath_hw *ah, u32 off, u16 *data);
};
+struct ath_wiphy;
+
struct ath_softc {
struct ieee80211_hw *hw;
struct device *dev;
+ struct ath_wiphy *pri_wiphy;
struct tasklet_struct intr_tq;
struct tasklet_struct bcon_tasklet;
struct ath_hw *sc_ah;
@@ -607,6 +610,11 @@
struct ath_bus_ops *bus_ops;
};
+struct ath_wiphy {
+ struct ath_softc *sc; /* shared for all virtual wiphys */
+ struct ieee80211_hw *hw;
+};
+
int ath_reset(struct ath_softc *sc, bool retry_tx);
int ath_get_hal_qnum(u16 queue, struct ath_softc *sc);
int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc);
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 599218d..0c0e587 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1934,7 +1934,8 @@
static int ath9k_start(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ieee80211_channel *curchan = hw->conf.channel;
struct ath9k_channel *init_channel;
int r, pos;
@@ -2012,7 +2013,7 @@
sc->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
- ieee80211_wake_queues(sc->hw);
+ ieee80211_wake_queues(hw);
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
r = ath_start_rfkill_poll(sc);
@@ -2028,7 +2029,8 @@
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath_tx_control txctl;
int hdrlen, padsize;
@@ -2078,7 +2080,8 @@
static void ath9k_stop(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
if (sc->sc_flags & SC_OP_INVALID) {
DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
@@ -2087,7 +2090,7 @@
mutex_lock(&sc->mutex);
- ieee80211_stop_queues(sc->hw);
+ ieee80211_stop_queues(hw);
/* make sure h/w will not generate any interrupt
* before setting the invalid flag. */
@@ -2118,7 +2121,8 @@
static int ath9k_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath_vif *avp = (void *)conf->vif->drv_priv;
enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
int ret = 0;
@@ -2217,7 +2221,8 @@
static void ath9k_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath_vif *avp = (void *)conf->vif->drv_priv;
int i;
@@ -2252,7 +2257,8 @@
static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ieee80211_conf *conf = &hw->conf;
mutex_lock(&sc->mutex);
@@ -2319,7 +2325,8 @@
struct ieee80211_vif *vif,
struct ieee80211_if_conf *conf)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath_hw *ah = sc->sc_ah;
struct ath_vif *avp = (void *)vif->drv_priv;
u32 rfilt = 0;
@@ -2424,7 +2431,8 @@
int mc_count,
struct dev_mc_list *mclist)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
u32 rfilt;
changed_flags &= SUPPORTED_FILTERS;
@@ -2442,7 +2450,8 @@
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
switch (cmd) {
case STA_NOTIFY_ADD:
@@ -2459,7 +2468,8 @@
static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath9k_tx_queue_info qi;
int ret = 0, qnum;
@@ -2495,7 +2505,8 @@
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
int ret = 0;
if (modparam_nohwcrypt)
@@ -2537,7 +2548,8 @@
struct ieee80211_bss_conf *bss_conf,
u32 changed)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
@@ -2572,7 +2584,8 @@
static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
{
u64 tsf;
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
tsf = ath9k_hw_gettsf64(sc->sc_ah);
@@ -2583,7 +2596,8 @@
static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
ath9k_hw_settsf64(sc->sc_ah, tsf);
@@ -2592,7 +2606,8 @@
static void ath9k_reset_tsf(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
ath9k_hw_reset_tsf(sc->sc_ah);
@@ -2604,7 +2619,8 @@
struct ieee80211_sta *sta,
u16 tid, u16 *ssn)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
int ret = 0;
switch (action) {
@@ -2642,7 +2658,8 @@
static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
sc->sc_flags |= SC_OP_SCANNING;
@@ -2651,7 +2668,8 @@
static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
mutex_lock(&sc->mutex);
sc->sc_flags &= ~SC_OP_SCANNING;
diff --git a/drivers/net/wireless/ath9k/pci.c b/drivers/net/wireless/ath9k/pci.c
index eea9d3a..9a58baa 100644
--- a/drivers/net/wireless/ath9k/pci.c
+++ b/drivers/net/wireless/ath9k/pci.c
@@ -83,6 +83,7 @@
static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
void __iomem *mem;
+ struct ath_wiphy *aphy;
struct ath_softc *sc;
struct ieee80211_hw *hw;
u8 csz;
@@ -155,7 +156,8 @@
goto bad1;
}
- hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
+ hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
+ sizeof(struct ath_softc), &ath9k_ops);
if (hw == NULL) {
printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
goto bad2;
@@ -164,7 +166,11 @@
SET_IEEE80211_DEV(hw, &pdev->dev);
pci_set_drvdata(pdev, hw);
- sc = hw->priv;
+ aphy = hw->priv;
+ sc = (struct ath_softc *) (aphy + 1);
+ aphy->sc = sc;
+ aphy->hw = hw;
+ sc->pri_wiphy = aphy;
sc->hw = hw;
sc->dev = &pdev->dev;
sc->mem = mem;
@@ -214,7 +220,8 @@
static void ath_pci_remove(struct pci_dev *pdev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
ath_cleanup(sc);
}
@@ -224,7 +231,8 @@
static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
@@ -243,7 +251,8 @@
static int ath_pci_resume(struct pci_dev *pdev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
u32 val;
int err;
diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 6d7e636..8327356 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1673,7 +1673,8 @@
static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
{
- return hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ return aphy->sc;
}
static void ath_rate_free(void *priv)
diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index 23b6f54..ec53583 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -16,6 +16,12 @@
#include "ath9k.h"
+static struct ieee80211_hw * ath_get_virt_hw(struct ath_softc *sc,
+ struct ieee80211_hdr *hdr)
+{
+ return sc->pri_wiphy->hw;
+}
+
/*
* Setup and link descriptors.
*
@@ -123,10 +129,12 @@
struct ieee80211_hdr *hdr;
u8 ratecode;
__le16 fc;
+ struct ieee80211_hw *hw;
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
+ hw = ath_get_virt_hw(sc, hdr);
if (ds->ds_rxstat.rs_more) {
/*
@@ -186,7 +194,6 @@
rx_status->rate_idx = ratecode & 0x7f;
} else {
int i = 0, cur_band, n_rates;
- struct ieee80211_hw *hw = sc->hw;
cur_band = hw->conf.channel->band;
n_rates = sc->sbands[cur_band].n_bitrates;
@@ -208,8 +215,8 @@
}
rx_status->mactime = ath_extend_tsf(sc, ds->ds_rxstat.rs_tstamp);
- rx_status->band = sc->hw->conf.channel->band;
- rx_status->freq = sc->hw->conf.channel->center_freq;
+ rx_status->band = hw->conf.channel->band;
+ rx_status->freq = hw->conf.channel->center_freq;
rx_status->noise = sc->ani.noise_floor;
rx_status->signal = rx_status->noise + ds->ds_rxstat.rs_rssi;
rx_status->antenna = ds->ds_rxstat.rs_antenna;
@@ -604,7 +611,7 @@
}
/* Send the frame to mac80211 */
- __ieee80211_rx(sc->hw, skb, &rx_status);
+ __ieee80211_rx(ath_get_virt_hw(sc, hdr), skb, &rx_status);
/* We will now give hardware our shiny new allocated skb */
bf->bf_mpdu = requeue_skb;
diff --git a/drivers/net/wireless/ath9k/regd.c b/drivers/net/wireless/ath9k/regd.c
index f7d7cc2..639da97 100644
--- a/drivers/net/wireless/ath9k/regd.c
+++ b/drivers/net/wireless/ath9k/regd.c
@@ -311,7 +311,8 @@
void ath9k_reg_apply_world_flags(struct wiphy *wiphy, enum reg_set_by setby)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath_hw *ah = sc->sc_ah;
switch (ah->regulatory.regpair->regDmnEnum) {
@@ -332,7 +333,8 @@
int ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
/* We always apply this */
ath9k_reg_apply_radar_flags(wiphy);
diff --git a/drivers/net/wireless/ath9k/virtual.c b/drivers/net/wireless/ath9k/virtual.c
index 52d5021..a91f2f1 100644
--- a/drivers/net/wireless/ath9k/virtual.c
+++ b/drivers/net/wireless/ath9k/virtual.c
@@ -38,7 +38,8 @@
void ath9k_set_bssid_mask(struct ieee80211_hw *hw)
{
- struct ath_softc *sc = hw->priv;
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
struct ath9k_vif_iter_data iter_data;
int i, j;
u8 mask[ETH_ALEN];