+++ /dev/null
---- a/ath_hal/ah_os.h
-+++ b/ath_hal/ah_os.h
-@@ -194,10 +194,6 @@ extern u_int32_t __ahdecl ath_hal_getupt
- */
- #if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
- #define is_reg_le(__reg) ((0x4000 <= (__reg) && (__reg) < 0x5000))
--#else
--#define is_reg_le(__reg) 1
--#endif
--
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
- #define _OS_REG_WRITE(_ah, _reg, _val) do { \
- is_reg_le(_reg) ? \
-@@ -219,6 +215,21 @@ extern u_int32_t __ahdecl ath_hal_getupt
- readl((_ah)->ah_sh + (_reg)) : \
- cpu_to_le32(readl((_ah)->ah_sh + (_reg))))
- #endif /* KERNEL_VERSION(2,6,12) */
-+#else /* AH_BYTE_ORDER != AH_BIG_ENDIAN */
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
-+#define _OS_REG_WRITE(_ah, _reg, _val) do { \
-+ iowrite32((_val), (_ah)->ah_sh + (_reg)); \
-+ } while (0)
-+#define _OS_REG_READ(_ah, _reg) \
-+ ioread32((_ah)->ah_sh + (_reg))
-+#else
-+#define _OS_REG_WRITE(_ah, _reg, _val) do { \
-+ writel((_val), (_ah)->ah_sh + (_reg)); \
-+ } while (0)
-+#define _OS_REG_READ(_ah, _reg) \
-+ readl((_ah)->ah_sh + (_reg))
-+#endif /* KERNEL_VERSION(2,6,12) */
-+#endif /* AH_BYTE_ORDER != AH_BIG_ENDIAN */
-
- /*
- * The functions in this section are not intended to be invoked by MadWifi
--- /dev/null
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -606,6 +606,14 @@ ath_attach(u_int16_t devid, struct net_d
+ }
+ sc->sc_ah = ah;
+
++ /* WAR for AR7100 PCI bug */
++#ifdef CONFIG_ATHEROS_AR71XX
++ if ((ar_device(sc->devid) >= 5210) && (ar_device(sc->devid) < 5416)) {
++ ath_hal_setcapability(ah, HAL_CAP_DMABURST_RX, 0, HAL_DMABURST_4B, NULL);
++ ath_hal_setcapability(ah, HAL_CAP_DMABURST_TX, 0, HAL_DMABURST_4B, NULL);
++ }
++#endif
++
+ /*
+ * Check if the MAC has multi-rate retry support.
+ * We do this by trying to setup a fake extended
+@@ -7553,7 +7561,7 @@ ath_txq_setup(struct ath_softc *sc, int
+ if (qtype == HAL_TX_QUEUE_UAPSD)
+ qi.tqi_qflags = HAL_TXQ_TXDESCINT_ENABLE;
+ else
+- qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
++ qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE | HAL_TXQ_TXOKINT_ENABLE |
+ HAL_TXQ_TXDESCINT_ENABLE;
+ qnum = ath_hal_setuptxqueue(ah, qtype, &qi);
+ if (qnum == -1) {
+--- a/ath_hal/ah_os.c
++++ b/ath_hal/ah_os.c
+@@ -126,6 +126,13 @@ ath_hal_printf(struct ath_hal *ah, const
+ }
+ EXPORT_SYMBOL(ath_hal_printf);
+
++void __ahdecl
++ath_hal_printstr(struct ath_hal *ah, const char *str)
++{
++ printk("%s", str);
++}
++EXPORT_SYMBOL(ath_hal_printstr);
++
+ /*
+ * Format an Ethernet MAC for printing.
+ */
+--- a/ath_hal/ah_os.h
++++ b/ath_hal/ah_os.h
+@@ -156,69 +156,23 @@ extern u_int32_t __ahdecl ath_hal_getupt
+ #endif
+ #endif /* AH_BYTE_ORDER */
+
+-/*
+- * Some big-endian architectures don't set CONFIG_GENERIC_IOMAP, but fail to
+- * implement iowrite32be and ioread32be. Provide compatibility macros when
+- * it's needed.
+- *
+- * As of Linux 2.6.24, only MIPS, PARISC and PowerPC implement iowrite32be and
+- * ioread32be as functions.
+- *
+- * The downside or the replacement macros it that we may be byte-swapping data
+- * for the second time, so the native implementations should be preferred.
+- */
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)) && \
+- !defined(CONFIG_GENERIC_IOMAP) && (AH_BYTE_ORDER == AH_BIG_ENDIAN) && \
+- !defined(__mips__) && !defined(__hppa__) && !defined(__powerpc__)
+-# ifndef iowrite32be
+-# define iowrite32be(_val, _addr) iowrite32(swab32((_val)), (_addr))
+-# endif
+-# ifndef ioread32be
+-# define ioread32be(_addr) swab32(ioread32((_addr)))
+-# endif
+-#endif
++#define IS_SWAPPED(_ah, _reg) \
++ ((_ah)->ah_swapped && \
++ (((0x4000 <= (_reg)) && ((_reg) < 0x5000)) || \
++ ((0x7000 <= (_reg)) && ((_reg) < 0x8000))))
++
++#define SWAPREG(_ah, _reg, _val) \
++ (IS_SWAPPED(_ah, _reg) ? cpu_to_le32(_val) : (_val))
+
+ /*
+ * The register accesses are done using target-specific functions when
+ * debugging is enabled (AH_DEBUG) or it's explicitly requested for the target.
+- *
+- * The hardware registers use little-endian byte order natively. Big-endian
+- * systems are configured by HAL to enable hardware byte-swap of register reads
+- * and writes at reset. This avoid the need to byte-swap the data in software.
+- * However, the registers in a certain area from 0x4000 to 0x4fff (PCI clock
+- * domain registers) are not byte swapped!
+- *
+- * Since Linux I/O primitives default to little-endian operations, we only
+- * need to suppress byte-swapping on big-endian systems outside the area used
+- * by the PCI clock domain registers.
+ */
+-#if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
+-#define is_reg_le(__reg) ((0x4000 <= (__reg) && (__reg) < 0x5000))
+-#else
+-#define is_reg_le(__reg) 1
+-#endif
+-
+-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+-#define _OS_REG_WRITE(_ah, _reg, _val) do { \
+- is_reg_le(_reg) ? \
+- iowrite32((_val), (_ah)->ah_sh + (_reg)) : \
+- iowrite32be((_val), (_ah)->ah_sh + (_reg)); \
+- } while (0)
+-#define _OS_REG_READ(_ah, _reg) \
+- (is_reg_le(_reg) ? \
+- ioread32((_ah)->ah_sh + (_reg)) : \
+- ioread32be((_ah)->ah_sh + (_reg)))
+-#else
+ #define _OS_REG_WRITE(_ah, _reg, _val) do { \
+- writel(is_reg_le(_reg) ? \
+- (_val) : cpu_to_le32(_val), \
+- (_ah)->ah_sh + (_reg)); \
+- } while (0)
++ __raw_writel(SWAPREG(_ah, _reg, _val), (_ah)->ah_sh + (_reg)); \
++} while (0)
+ #define _OS_REG_READ(_ah, _reg) \
+- (is_reg_le(_reg) ? \
+- readl((_ah)->ah_sh + (_reg)) : \
+- cpu_to_le32(readl((_ah)->ah_sh + (_reg))))
+-#endif /* KERNEL_VERSION(2,6,12) */
++ SWAPREG(_ah, _reg, __raw_readl((_ah)->ah_sh + (_reg)))
+
+ /*
+ * The functions in this section are not intended to be invoked by MadWifi
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
-@@ -6511,7 +6511,7 @@ ath_capture(struct net_device *dev, cons
+@@ -6519,7 +6519,7 @@ ath_capture(struct net_device *dev, cons
/* Never copy the SKB, as it is ours on the RX side, and this is the
* last process on the TX side and we only modify our own headers. */
if (tskb == NULL) {
DPRINTF(sc, ATH_DEBUG_ANY,
"Dropping; ath_skb_removepad failed!\n");
-@@ -6519,6 +6519,8 @@ ath_capture(struct net_device *dev, cons
+@@ -6527,6 +6527,8 @@ ath_capture(struct net_device *dev, cons
}
ieee80211_input_monitor(ic, tskb, bf, tx, tsf, sc);
Please let us know if you think your name should be mentioned here!
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
-@@ -3130,7 +3130,7 @@ ath_tx_startraw(struct net_device *dev,
+@@ -3138,7 +3138,7 @@ ath_tx_startraw(struct net_device *dev,
struct ath_softc *sc = dev->priv;
struct ath_hal *ah = sc->sc_ah;
struct ieee80211_phy_params *ph = (struct ieee80211_phy_params *)
--- /dev/null
+--- a/net80211/ieee80211_scan.c
++++ b/net80211/ieee80211_scan.c
+@@ -97,6 +97,123 @@ struct scan_state {
+ static void scan_restart_pwrsav(unsigned long);
+ static void scan_next(unsigned long);
+
++spinlock_t channel_lock = SPIN_LOCK_UNLOCKED;
++static LIST_HEAD(channels_inuse);
++
++struct channel_inuse {
++ struct list_head list;
++ struct ieee80211com *ic;
++ u16 freq;
++ u8 bw;
++};
++
++static inline u32
++get_signal(u8 bw, u8 distance)
++{
++ u32 v;
++
++ /* signal = 1 - (distance / bw)^2 [scale: 100] */
++ v = 100 * distance / bw;
++ v = (100 - ((v * v) / 100));
++ return v;
++}
++
++static u32
++get_overlap(u16 f1, u16 f2, u8 b1, u8 b2)
++{
++ u32 v;
++ u16 d, c;
++
++ /* add offsets for sidechannel interference */
++ b1 += (b1 / 5);
++ b2 += (b2 / 5);
++
++ /* use only one direction */
++ b1 /= 2;
++ b2 /= 2;
++
++ if (f1 + b1 < f2 - b2)
++ return 0;
++
++ d = f2 - f1;
++ c = d * b1 / (b1 + b2);
++ v = get_signal(b1, c);
++
++ return v * v / 100;
++}
++
++static u8
++get_channel_bw(struct ieee80211_channel *c)
++{
++ switch(c->ic_flags & (
++ IEEE80211_CHAN_HALF |
++ IEEE80211_CHAN_QUARTER |
++ IEEE80211_CHAN_TURBO |
++ IEEE80211_CHAN_STURBO)) {
++ case IEEE80211_CHAN_QUARTER:
++ return 5;
++ case IEEE80211_CHAN_HALF:
++ return 10;
++ case IEEE80211_CHAN_TURBO:
++ case IEEE80211_CHAN_STURBO:
++ return 40;
++ default:
++ return 20;
++ }
++}
++
++/* must be called with channel_lock held */
++u32
++ieee80211_scan_get_bias(struct ieee80211_channel *c)
++{
++ struct channel_inuse *ch;
++ u8 bw = get_channel_bw(c);
++ u32 bias = 0;
++
++ list_for_each_entry(ch, &channels_inuse, list) {
++ if (ch->freq == c->ic_freq) {
++ bias += 50;
++ continue;
++ }
++ if (c->ic_freq < ch->freq)
++ bias += get_overlap(c->ic_freq, ch->freq, bw, ch->bw);
++ else
++ bias += get_overlap(ch->freq, c->ic_freq, ch->bw, bw);
++ }
++ return min(bias, (u32) 100);
++}
++EXPORT_SYMBOL(ieee80211_scan_get_bias);
++
++/* must be called with channel_lock held */
++void
++ieee80211_scan_set_bss_channel(struct ieee80211com *ic, struct ieee80211_channel *c)
++{
++ unsigned long flags;
++ struct channel_inuse *ch;
++
++ list_for_each_entry(ch, &channels_inuse, list) {
++ if (ch->ic == ic)
++ goto found;
++ }
++ ch = NULL;
++found:
++ if (c && (c != IEEE80211_CHAN_ANYC)) {
++ if (!ch) {
++ ch = kmalloc(sizeof(struct channel_inuse), GFP_ATOMIC);
++ ch->ic = ic;
++ INIT_LIST_HEAD(&ch->list);
++ list_add(&ch->list, &channels_inuse);
++ }
++ ch->freq = c->ic_freq;
++ ch->bw = get_channel_bw(c);
++ } else if (ch) {
++ list_del(&ch->list);
++ kfree(ch);
++ }
++}
++EXPORT_SYMBOL(ieee80211_scan_set_bss_channel);
++
++
+ void
+ ieee80211_scan_attach(struct ieee80211com *ic)
+ {
+@@ -1155,7 +1272,7 @@ ieee80211_scan_dfs_action(struct ieee802
+ IEEE80211_RADAR_CHANCHANGE_TBTT_COUNT;
+ ic->ic_flags |= IEEE80211_F_CHANSWITCH;
+ } else {
+-
++ unsigned long flags;
+ IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
+ "%s: directly switching to channel "
+ "%3d (%4d MHz)\n", __func__,
+@@ -1166,6 +1283,9 @@ ieee80211_scan_dfs_action(struct ieee802
+ * change the channel here. */
+ change_channel(ic, new_channel);
+ ic->ic_bsschan = new_channel;
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
+ if (vap->iv_bss)
+ vap->iv_bss->ni_chan = new_channel;
+ }
+--- a/net80211/ieee80211_scan.h
++++ b/net80211/ieee80211_scan.h
+@@ -35,6 +35,7 @@
+
+ #define IEEE80211_SCAN_MAX IEEE80211_CHAN_MAX
+
++extern spinlock_t channel_lock;
+ struct ieee80211_scanner;
+ struct ieee80211_scan_entry;
+
+@@ -116,6 +117,8 @@ void ieee80211_scan_flush(struct ieee802
+ struct ieee80211_scan_entry;
+ typedef int ieee80211_scan_iter_func(void *, const struct ieee80211_scan_entry *);
+ int ieee80211_scan_iterate(struct ieee80211com *, ieee80211_scan_iter_func *, void *);
++u32 ieee80211_scan_get_bias(struct ieee80211_channel *c);
++void ieee80211_scan_set_bss_channel(struct ieee80211com *ic, struct ieee80211_channel *c);
+
+ /*
+ * Parameters supplied when adding/updating an entry in a
+--- a/net80211/ieee80211.c
++++ b/net80211/ieee80211.c
+@@ -373,8 +373,16 @@ void
+ ieee80211_ifdetach(struct ieee80211com *ic)
+ {
+ struct ieee80211vap *vap;
++ unsigned long flags;
+ int count;
+
++ /* mark the channel as no longer in use */
++ ic->ic_bsschan = IEEE80211_CHAN_ANYC;
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
++
++
+ /* bring down all vaps */
+ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+ ieee80211_stop(vap->iv_dev);
+--- a/net80211/ieee80211_input.c
++++ b/net80211/ieee80211_input.c
+@@ -2772,6 +2772,7 @@ static void
+ ieee80211_doth_switch_channel(struct ieee80211vap *vap)
+ {
+ struct ieee80211com *ic = vap->iv_ic;
++ unsigned long flags;
+
+ IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
+ "%s: Channel switch to %3d (%4d MHz) NOW!\n",
+@@ -2794,6 +2795,9 @@ ieee80211_doth_switch_channel(struct iee
+
+ ic->ic_curchan = ic->ic_bsschan = vap->iv_csa_chan;
+ ic->ic_set_channel(ic);
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
+ }
+
+ static void
+--- a/net80211/ieee80211_node.c
++++ b/net80211/ieee80211_node.c
+@@ -308,6 +308,7 @@ ieee80211_create_ibss(struct ieee80211va
+ {
+ struct ieee80211com *ic = vap->iv_ic;
+ struct ieee80211_node *ni;
++ unsigned long flags;
+
+ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
+ "%s: creating ibss on channel %u\n", __func__,
+@@ -386,6 +387,9 @@ ieee80211_create_ibss(struct ieee80211va
+ ic->ic_bsschan = chan;
+ ieee80211_node_set_chan(ic, ni);
+ ic->ic_curmode = ieee80211_chan2mode(chan);
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
+
+ /* Update country ie information */
+ ieee80211_build_countryie(ic);
+@@ -622,6 +626,7 @@ ieee80211_sta_join1(struct ieee80211_nod
+ struct ieee80211vap *vap = selbs->ni_vap;
+ struct ieee80211com *ic = selbs->ni_ic;
+ struct ieee80211_node *obss;
++ unsigned long flags;
+ int canreassoc;
+
+ if (vap->iv_opmode == IEEE80211_M_IBSS) {
+@@ -650,6 +655,9 @@ ieee80211_sta_join1(struct ieee80211_nod
+ ic->ic_curchan = ic->ic_bsschan;
+ ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
+ ic->ic_set_channel(ic);
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
+ /*
+ * Set the erp state (mostly the slot time) to deal with
+ * the auto-select case; this should be redundant if the
+--- a/net80211/ieee80211_proto.c
++++ b/net80211/ieee80211_proto.c
+@@ -1225,6 +1225,7 @@ ieee80211_dturbo_switch(struct ieee80211
+ struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
+ #endif
+ struct ieee80211_channel *chan;
++ unsigned long flags;
+
+ chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags);
+ if (chan == NULL) { /* XXX should not happen */
+@@ -1243,6 +1244,9 @@ ieee80211_dturbo_switch(struct ieee80211
+ ic->ic_bsschan = chan;
+ ic->ic_curchan = chan;
+ ic->ic_set_channel(ic);
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
+ /* NB: do not need to reset ERP state because in sta mode */
+ }
+ EXPORT_SYMBOL(ieee80211_dturbo_switch);
+--- a/net80211/ieee80211_wireless.c
++++ b/net80211/ieee80211_wireless.c
+@@ -4076,8 +4076,13 @@ ieee80211_ioctl_setchanlist(struct net_d
+ if (nchan == 0) /* no valid channels, disallow */
+ return -EINVAL;
+ if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && /* XXX */
+- isclr(chanlist, ic->ic_bsschan->ic_ieee))
++ isclr(chanlist, ic->ic_bsschan->ic_ieee)) {
++ unsigned long flags;
+ ic->ic_bsschan = IEEE80211_CHAN_ANYC; /* invalidate */
++ spin_lock_irqsave(&channel_lock, flags);
++ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
++ spin_unlock_irqrestore(&channel_lock, flags);
++ }
+
+ memcpy(ic->ic_chan_active, chanlist, sizeof(ic->ic_chan_active));
+ /* update Supported Channels information element */
+--- a/net80211/ieee80211_scan_ap.c
++++ b/net80211/ieee80211_scan_ap.c
+@@ -213,9 +213,15 @@ ap_start(struct ieee80211_scan_state *ss
+ struct ieee80211com *ic = NULL;
+ int i;
+ unsigned int mode = 0;
++ unsigned long sflags;
+
+ SCAN_AP_LOCK_IRQ(as);
+ ic = vap->iv_ic;
++
++ spin_lock_irqsave(&channel_lock, sflags);
++ ieee80211_scan_set_bss_channel(ic, NULL);
++ spin_unlock_irqrestore(&channel_lock, sflags);
++
+ /* Determine mode flags to match, or leave zero for auto mode */
+ as->as_vap_desired_mode = vap->iv_des_mode;
+ as->as_required_mode = 0;
+@@ -429,8 +435,10 @@ pc_cmp_idletime(struct ieee80211_channel
+ if (!a->ic_idletime || !b->ic_idletime)
+ return 0;
+
+- /* a is better than b (return < 0) when a has more idle time than b */
+- return b->ic_idletime - a->ic_idletime;
++ /* a is better than b (return < 0) when a has more idle and less bias time than b */
++ return
++ ((100 - (u32) a->ic_idletime) + ieee80211_scan_get_bias(a)) -
++ ((100 - (u32) b->ic_idletime) + ieee80211_scan_get_bias(b));
+ }
+
+
+@@ -616,6 +624,7 @@ ap_end(struct ieee80211_scan_state *ss,
+ struct ap_state *as = ss->ss_priv;
+ struct ieee80211_channel *bestchan = NULL;
+ struct ieee80211com *ic = NULL;
++ unsigned long sflags;
+ int res = 1;
+
+ SCAN_AP_LOCK_IRQ(as);
+@@ -624,8 +633,11 @@ ap_end(struct ieee80211_scan_state *ss,
+ ("wrong opmode %u", vap->iv_opmode));
+
+ ic = vap->iv_ic;
++ spin_lock_irqsave(&channel_lock, sflags);
++ ieee80211_scan_set_bss_channel(ic, NULL);
+ bestchan = pick_channel(ss, vap, flags);
+ if (bestchan == NULL) {
++ spin_unlock_irqrestore(&channel_lock, sflags);
+ if (ss->ss_last > 0) {
+ /* no suitable channel, should not happen */
+ printk(KERN_ERR "%s: %s: no suitable channel! "
+@@ -644,6 +656,7 @@ ap_end(struct ieee80211_scan_state *ss,
+ bestchan->ic_freq, bestchan->ic_flags &
+ ~IEEE80211_CHAN_TURBO)) == NULL) {
+ /* should never happen ?? */
++ spin_unlock_irqrestore(&channel_lock, sflags);
+ SCAN_AP_UNLOCK_IRQ_EARLY(as);
+ return 0;
+ }
+@@ -656,6 +669,9 @@ ap_end(struct ieee80211_scan_state *ss,
+ as->as_action = action;
+ as->as_selbss = se;
+
++ ieee80211_scan_set_bss_channel(ic, bestchan);
++ spin_unlock_irqrestore(&channel_lock, sflags);
++
+ /* Must defer action to avoid possible recursive call through
+ * 80211 state machine, which would result in recursive
+ * locking. */
+++ /dev/null
---- a/ath_hal/ah_os.h
-+++ b/ath_hal/ah_os.h
-@@ -156,80 +156,23 @@ extern u_int32_t __ahdecl ath_hal_getupt
- #endif
- #endif /* AH_BYTE_ORDER */
-
--/*
-- * Some big-endian architectures don't set CONFIG_GENERIC_IOMAP, but fail to
-- * implement iowrite32be and ioread32be. Provide compatibility macros when
-- * it's needed.
-- *
-- * As of Linux 2.6.24, only MIPS, PARISC and PowerPC implement iowrite32be and
-- * ioread32be as functions.
-- *
-- * The downside or the replacement macros it that we may be byte-swapping data
-- * for the second time, so the native implementations should be preferred.
-- */
--#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)) && \
-- !defined(CONFIG_GENERIC_IOMAP) && (AH_BYTE_ORDER == AH_BIG_ENDIAN) && \
-- !defined(__mips__) && !defined(__hppa__) && !defined(__powerpc__)
--# ifndef iowrite32be
--# define iowrite32be(_val, _addr) iowrite32(swab32((_val)), (_addr))
--# endif
--# ifndef ioread32be
--# define ioread32be(_addr) swab32(ioread32((_addr)))
--# endif
--#endif
-+#define IS_SWAPPED(_ah, _reg) \
-+ ((_ah)->ah_swapped && \
-+ (((0x4000 <= (_reg)) && ((_reg) < 0x5000)) || \
-+ ((0x7000 <= (_reg)) && ((_reg) < 0x8000))))
-+
-+#define SWAPREG(_ah, _reg, _val) \
-+ (IS_SWAPPED(_ah, _reg) ? cpu_to_le32(_val) : (_val))
-
- /*
- * The register accesses are done using target-specific functions when
- * debugging is enabled (AH_DEBUG) or it's explicitly requested for the target.
-- *
-- * The hardware registers use little-endian byte order natively. Big-endian
-- * systems are configured by HAL to enable hardware byte-swap of register reads
-- * and writes at reset. This avoid the need to byte-swap the data in software.
-- * However, the registers in a certain area from 0x4000 to 0x4fff (PCI clock
-- * domain registers) are not byte swapped!
-- *
-- * Since Linux I/O primitives default to little-endian operations, we only
-- * need to suppress byte-swapping on big-endian systems outside the area used
-- * by the PCI clock domain registers.
- */
--#if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
--#define is_reg_le(__reg) ((0x4000 <= (__reg) && (__reg) < 0x5000))
--#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
--#define _OS_REG_WRITE(_ah, _reg, _val) do { \
-- is_reg_le(_reg) ? \
-- iowrite32((_val), (_ah)->ah_sh + (_reg)) : \
-- iowrite32be((_val), (_ah)->ah_sh + (_reg)); \
-- } while (0)
--#define _OS_REG_READ(_ah, _reg) \
-- (is_reg_le(_reg) ? \
-- ioread32((_ah)->ah_sh + (_reg)) : \
-- ioread32be((_ah)->ah_sh + (_reg)))
--#else
--#define _OS_REG_WRITE(_ah, _reg, _val) do { \
-- writel(is_reg_le(_reg) ? \
-- (_val) : cpu_to_le32(_val), \
-- (_ah)->ah_sh + (_reg)); \
-- } while (0)
--#define _OS_REG_READ(_ah, _reg) \
-- (is_reg_le(_reg) ? \
-- readl((_ah)->ah_sh + (_reg)) : \
-- cpu_to_le32(readl((_ah)->ah_sh + (_reg))))
--#endif /* KERNEL_VERSION(2,6,12) */
--#else /* AH_BYTE_ORDER != AH_BIG_ENDIAN */
--#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
--#define _OS_REG_WRITE(_ah, _reg, _val) do { \
-- iowrite32((_val), (_ah)->ah_sh + (_reg)); \
-- } while (0)
--#define _OS_REG_READ(_ah, _reg) \
-- ioread32((_ah)->ah_sh + (_reg))
--#else
- #define _OS_REG_WRITE(_ah, _reg, _val) do { \
-- writel((_val), (_ah)->ah_sh + (_reg)); \
-- } while (0)
-+ __raw_writel(SWAPREG(_ah, _reg, _val), (_ah)->ah_sh + (_reg)); \
-+} while (0)
- #define _OS_REG_READ(_ah, _reg) \
-- readl((_ah)->ah_sh + (_reg))
--#endif /* KERNEL_VERSION(2,6,12) */
--#endif /* AH_BYTE_ORDER != AH_BIG_ENDIAN */
-+ SWAPREG(_ah, _reg, __raw_readl((_ah)->ah_sh + (_reg)))
-
- /*
- * The functions in this section are not intended to be invoked by MadWifi
---- a/ath/if_ath.c
-+++ b/ath/if_ath.c
-@@ -606,6 +606,14 @@ ath_attach(u_int16_t devid, struct net_d
- }
- sc->sc_ah = ah;
-
-+ /* WAR for AR7100 PCI bug */
-+#ifdef CONFIG_ATHEROS_AR71XX
-+ if ((ar_device(sc->devid) >= 5210) && (ar_device(sc->devid) < 5416)) {
-+ ath_hal_setcapability(ah, HAL_CAP_DMABURST_RX, 0, HAL_DMABURST_4B, NULL);
-+ ath_hal_setcapability(ah, HAL_CAP_DMABURST_TX, 0, HAL_DMABURST_4B, NULL);
-+ }
-+#endif
-+
- /*
- * Check if the MAC has multi-rate retry support.
- * We do this by trying to setup a fake extended
-@@ -7555,7 +7563,7 @@ ath_txq_setup(struct ath_softc *sc, int
- if (qtype == HAL_TX_QUEUE_UAPSD)
- qi.tqi_qflags = HAL_TXQ_TXDESCINT_ENABLE;
- else
-- qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
-+ qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE | HAL_TXQ_TXOKINT_ENABLE |
- HAL_TXQ_TXDESCINT_ENABLE;
- qnum = ath_hal_setuptxqueue(ah, qtype, &qi);
- if (qnum == -1) {
---- a/ath_hal/ah_os.c
-+++ b/ath_hal/ah_os.c
-@@ -126,6 +126,13 @@ ath_hal_printf(struct ath_hal *ah, const
- }
- EXPORT_SYMBOL(ath_hal_printf);
-
-+void __ahdecl
-+ath_hal_printstr(struct ath_hal *ah, const char *str)
-+{
-+ printk("%s", str);
-+}
-+EXPORT_SYMBOL(ath_hal_printstr);
-+
- /*
- * Format an Ethernet MAC for printing.
- */
+++ /dev/null
---- a/net80211/ieee80211_scan.c
-+++ b/net80211/ieee80211_scan.c
-@@ -97,6 +97,123 @@ struct scan_state {
- static void scan_restart_pwrsav(unsigned long);
- static void scan_next(unsigned long);
-
-+spinlock_t channel_lock = SPIN_LOCK_UNLOCKED;
-+static LIST_HEAD(channels_inuse);
-+
-+struct channel_inuse {
-+ struct list_head list;
-+ struct ieee80211com *ic;
-+ u16 freq;
-+ u8 bw;
-+};
-+
-+static inline u32
-+get_signal(u8 bw, u8 distance)
-+{
-+ u32 v;
-+
-+ /* signal = 1 - (distance / bw)^2 [scale: 100] */
-+ v = 100 * distance / bw;
-+ v = (100 - ((v * v) / 100));
-+ return v;
-+}
-+
-+static u32
-+get_overlap(u16 f1, u16 f2, u8 b1, u8 b2)
-+{
-+ u32 v;
-+ u16 d, c;
-+
-+ /* add offsets for sidechannel interference */
-+ b1 += (b1 / 5);
-+ b2 += (b2 / 5);
-+
-+ /* use only one direction */
-+ b1 /= 2;
-+ b2 /= 2;
-+
-+ if (f1 + b1 < f2 - b2)
-+ return 0;
-+
-+ d = f2 - f1;
-+ c = d * b1 / (b1 + b2);
-+ v = get_signal(b1, c);
-+
-+ return v * v / 100;
-+}
-+
-+static u8
-+get_channel_bw(struct ieee80211_channel *c)
-+{
-+ switch(c->ic_flags & (
-+ IEEE80211_CHAN_HALF |
-+ IEEE80211_CHAN_QUARTER |
-+ IEEE80211_CHAN_TURBO |
-+ IEEE80211_CHAN_STURBO)) {
-+ case IEEE80211_CHAN_QUARTER:
-+ return 5;
-+ case IEEE80211_CHAN_HALF:
-+ return 10;
-+ case IEEE80211_CHAN_TURBO:
-+ case IEEE80211_CHAN_STURBO:
-+ return 40;
-+ default:
-+ return 20;
-+ }
-+}
-+
-+/* must be called with channel_lock held */
-+u32
-+ieee80211_scan_get_bias(struct ieee80211_channel *c)
-+{
-+ struct channel_inuse *ch;
-+ u8 bw = get_channel_bw(c);
-+ u32 bias = 0;
-+
-+ list_for_each_entry(ch, &channels_inuse, list) {
-+ if (ch->freq == c->ic_freq) {
-+ bias += 50;
-+ continue;
-+ }
-+ if (c->ic_freq < ch->freq)
-+ bias += get_overlap(c->ic_freq, ch->freq, bw, ch->bw);
-+ else
-+ bias += get_overlap(ch->freq, c->ic_freq, ch->bw, bw);
-+ }
-+ return min(bias, (u32) 100);
-+}
-+EXPORT_SYMBOL(ieee80211_scan_get_bias);
-+
-+/* must be called with channel_lock held */
-+void
-+ieee80211_scan_set_bss_channel(struct ieee80211com *ic, struct ieee80211_channel *c)
-+{
-+ unsigned long flags;
-+ struct channel_inuse *ch;
-+
-+ list_for_each_entry(ch, &channels_inuse, list) {
-+ if (ch->ic == ic)
-+ goto found;
-+ }
-+ ch = NULL;
-+found:
-+ if (c && (c != IEEE80211_CHAN_ANYC)) {
-+ if (!ch) {
-+ ch = kmalloc(sizeof(struct channel_inuse), GFP_ATOMIC);
-+ ch->ic = ic;
-+ INIT_LIST_HEAD(&ch->list);
-+ list_add(&ch->list, &channels_inuse);
-+ }
-+ ch->freq = c->ic_freq;
-+ ch->bw = get_channel_bw(c);
-+ } else if (ch) {
-+ list_del(&ch->list);
-+ kfree(ch);
-+ }
-+}
-+EXPORT_SYMBOL(ieee80211_scan_set_bss_channel);
-+
-+
- void
- ieee80211_scan_attach(struct ieee80211com *ic)
- {
-@@ -1155,7 +1272,7 @@ ieee80211_scan_dfs_action(struct ieee802
- IEEE80211_RADAR_CHANCHANGE_TBTT_COUNT;
- ic->ic_flags |= IEEE80211_F_CHANSWITCH;
- } else {
--
-+ unsigned long flags;
- IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
- "%s: directly switching to channel "
- "%3d (%4d MHz)\n", __func__,
-@@ -1166,6 +1283,9 @@ ieee80211_scan_dfs_action(struct ieee802
- * change the channel here. */
- change_channel(ic, new_channel);
- ic->ic_bsschan = new_channel;
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
- if (vap->iv_bss)
- vap->iv_bss->ni_chan = new_channel;
- }
---- a/net80211/ieee80211_scan.h
-+++ b/net80211/ieee80211_scan.h
-@@ -35,6 +35,7 @@
-
- #define IEEE80211_SCAN_MAX IEEE80211_CHAN_MAX
-
-+extern spinlock_t channel_lock;
- struct ieee80211_scanner;
- struct ieee80211_scan_entry;
-
-@@ -116,6 +117,8 @@ void ieee80211_scan_flush(struct ieee802
- struct ieee80211_scan_entry;
- typedef int ieee80211_scan_iter_func(void *, const struct ieee80211_scan_entry *);
- int ieee80211_scan_iterate(struct ieee80211com *, ieee80211_scan_iter_func *, void *);
-+u32 ieee80211_scan_get_bias(struct ieee80211_channel *c);
-+void ieee80211_scan_set_bss_channel(struct ieee80211com *ic, struct ieee80211_channel *c);
-
- /*
- * Parameters supplied when adding/updating an entry in a
---- a/net80211/ieee80211.c
-+++ b/net80211/ieee80211.c
-@@ -373,8 +373,16 @@ void
- ieee80211_ifdetach(struct ieee80211com *ic)
- {
- struct ieee80211vap *vap;
-+ unsigned long flags;
- int count;
-
-+ /* mark the channel as no longer in use */
-+ ic->ic_bsschan = IEEE80211_CHAN_ANYC;
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
-+
-+
- /* bring down all vaps */
- TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
- ieee80211_stop(vap->iv_dev);
---- a/net80211/ieee80211_input.c
-+++ b/net80211/ieee80211_input.c
-@@ -2772,6 +2772,7 @@ static void
- ieee80211_doth_switch_channel(struct ieee80211vap *vap)
- {
- struct ieee80211com *ic = vap->iv_ic;
-+ unsigned long flags;
-
- IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
- "%s: Channel switch to %3d (%4d MHz) NOW!\n",
-@@ -2794,6 +2795,9 @@ ieee80211_doth_switch_channel(struct iee
-
- ic->ic_curchan = ic->ic_bsschan = vap->iv_csa_chan;
- ic->ic_set_channel(ic);
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
- }
-
- static void
---- a/net80211/ieee80211_node.c
-+++ b/net80211/ieee80211_node.c
-@@ -308,6 +308,7 @@ ieee80211_create_ibss(struct ieee80211va
- {
- struct ieee80211com *ic = vap->iv_ic;
- struct ieee80211_node *ni;
-+ unsigned long flags;
-
- IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
- "%s: creating ibss on channel %u\n", __func__,
-@@ -386,6 +387,9 @@ ieee80211_create_ibss(struct ieee80211va
- ic->ic_bsschan = chan;
- ieee80211_node_set_chan(ic, ni);
- ic->ic_curmode = ieee80211_chan2mode(chan);
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
-
- /* Update country ie information */
- ieee80211_build_countryie(ic);
-@@ -622,6 +626,7 @@ ieee80211_sta_join1(struct ieee80211_nod
- struct ieee80211vap *vap = selbs->ni_vap;
- struct ieee80211com *ic = selbs->ni_ic;
- struct ieee80211_node *obss;
-+ unsigned long flags;
- int canreassoc;
-
- if (vap->iv_opmode == IEEE80211_M_IBSS) {
-@@ -650,6 +655,9 @@ ieee80211_sta_join1(struct ieee80211_nod
- ic->ic_curchan = ic->ic_bsschan;
- ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
- ic->ic_set_channel(ic);
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
- /*
- * Set the erp state (mostly the slot time) to deal with
- * the auto-select case; this should be redundant if the
---- a/net80211/ieee80211_proto.c
-+++ b/net80211/ieee80211_proto.c
-@@ -1225,6 +1225,7 @@ ieee80211_dturbo_switch(struct ieee80211
- struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
- #endif
- struct ieee80211_channel *chan;
-+ unsigned long flags;
-
- chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags);
- if (chan == NULL) { /* XXX should not happen */
-@@ -1243,6 +1244,9 @@ ieee80211_dturbo_switch(struct ieee80211
- ic->ic_bsschan = chan;
- ic->ic_curchan = chan;
- ic->ic_set_channel(ic);
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
- /* NB: do not need to reset ERP state because in sta mode */
- }
- EXPORT_SYMBOL(ieee80211_dturbo_switch);
---- a/net80211/ieee80211_wireless.c
-+++ b/net80211/ieee80211_wireless.c
-@@ -4076,8 +4076,13 @@ ieee80211_ioctl_setchanlist(struct net_d
- if (nchan == 0) /* no valid channels, disallow */
- return -EINVAL;
- if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && /* XXX */
-- isclr(chanlist, ic->ic_bsschan->ic_ieee))
-+ isclr(chanlist, ic->ic_bsschan->ic_ieee)) {
-+ unsigned long flags;
- ic->ic_bsschan = IEEE80211_CHAN_ANYC; /* invalidate */
-+ spin_lock_irqsave(&channel_lock, flags);
-+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
-+ spin_unlock_irqrestore(&channel_lock, flags);
-+ }
-
- memcpy(ic->ic_chan_active, chanlist, sizeof(ic->ic_chan_active));
- /* update Supported Channels information element */
---- a/net80211/ieee80211_scan_ap.c
-+++ b/net80211/ieee80211_scan_ap.c
-@@ -213,9 +213,15 @@ ap_start(struct ieee80211_scan_state *ss
- struct ieee80211com *ic = NULL;
- int i;
- unsigned int mode = 0;
-+ unsigned long sflags;
-
- SCAN_AP_LOCK_IRQ(as);
- ic = vap->iv_ic;
-+
-+ spin_lock_irqsave(&channel_lock, sflags);
-+ ieee80211_scan_set_bss_channel(ic, NULL);
-+ spin_unlock_irqrestore(&channel_lock, sflags);
-+
- /* Determine mode flags to match, or leave zero for auto mode */
- as->as_vap_desired_mode = vap->iv_des_mode;
- as->as_required_mode = 0;
-@@ -429,8 +435,10 @@ pc_cmp_idletime(struct ieee80211_channel
- if (!a->ic_idletime || !b->ic_idletime)
- return 0;
-
-- /* a is better than b (return < 0) when a has more idle time than b */
-- return b->ic_idletime - a->ic_idletime;
-+ /* a is better than b (return < 0) when a has more idle and less bias time than b */
-+ return
-+ ((100 - (u32) a->ic_idletime) + ieee80211_scan_get_bias(a)) -
-+ ((100 - (u32) b->ic_idletime) + ieee80211_scan_get_bias(b));
- }
-
-
-@@ -616,6 +624,7 @@ ap_end(struct ieee80211_scan_state *ss,
- struct ap_state *as = ss->ss_priv;
- struct ieee80211_channel *bestchan = NULL;
- struct ieee80211com *ic = NULL;
-+ unsigned long sflags;
- int res = 1;
-
- SCAN_AP_LOCK_IRQ(as);
-@@ -624,8 +633,11 @@ ap_end(struct ieee80211_scan_state *ss,
- ("wrong opmode %u", vap->iv_opmode));
-
- ic = vap->iv_ic;
-+ spin_lock_irqsave(&channel_lock, sflags);
-+ ieee80211_scan_set_bss_channel(ic, NULL);
- bestchan = pick_channel(ss, vap, flags);
- if (bestchan == NULL) {
-+ spin_unlock_irqrestore(&channel_lock, sflags);
- if (ss->ss_last > 0) {
- /* no suitable channel, should not happen */
- printk(KERN_ERR "%s: %s: no suitable channel! "
-@@ -644,6 +656,7 @@ ap_end(struct ieee80211_scan_state *ss,
- bestchan->ic_freq, bestchan->ic_flags &
- ~IEEE80211_CHAN_TURBO)) == NULL) {
- /* should never happen ?? */
-+ spin_unlock_irqrestore(&channel_lock, sflags);
- SCAN_AP_UNLOCK_IRQ_EARLY(as);
- return 0;
- }
-@@ -656,6 +669,9 @@ ap_end(struct ieee80211_scan_state *ss,
- as->as_action = action;
- as->as_selbss = se;
-
-+ ieee80211_scan_set_bss_channel(ic, bestchan);
-+ spin_unlock_irqrestore(&channel_lock, sflags);
-+
- /* Must defer action to avoid possible recursive call through
- * 80211 state machine, which would result in recursive
- * locking. */
projects / openwrt / staging / hauke.git / commitdiff