Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h
index d278135..6650f60 100644 (file)
--- a/drivers/net/wireless/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath9k/ath9k.h
@@ -587,8 +587,8 @@ struct ath9k_country_entry {
        u8 iso[3];
 };
 
-#define REG_WRITE(_ah, _reg, _val) iowrite32(_val, _ah->ah_sh + _reg)
-#define REG_READ(_ah, _reg) ioread32(_ah->ah_sh + _reg)
+#define REG_WRITE(_ah, _reg, _val) ath9k_iowrite32((_ah), (_reg), (_val))
+#define REG_READ(_ah, _reg) ath9k_ioread32((_ah), (_reg))
 
 #define SM(_v, _f)  (((_v) << _f##_S) & _f)
 #define MS(_v, _f)  (((_v) & _f) >> _f##_S)

diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index 4ca2aed..139566c 100644 (file)
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -701,6 +701,7 @@ struct ath_softc {
        struct ath_hal *sc_ah;
        void __iomem *mem;
        spinlock_t sc_resetlock;
+       spinlock_t sc_serial_rw;
        struct mutex mutex;
 
        u8 sc_curbssid[ETH_ALEN];
@@ -751,4 +752,36 @@ int ath_get_hal_qnum(u16 queue, struct ath_softc *sc);
 int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc);
 int ath_cabq_update(struct ath_softc *);
 
+/*
+ * Read and write, they both share the same lock. We do this to serialize
+ * reads and writes on Atheros 802.11n PCI devices only. This is required
+ * as the FIFO on these devices can only accept sanely 2 requests. After
+ * that the device goes bananas. Serializing the reads/writes prevents this
+ * from happening.
+ */
+
+static inline void ath9k_iowrite32(struct ath_hal *ah, u32 reg_offset, u32 val)
+{
+       if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) {
+               unsigned long flags;
+               spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
+               iowrite32(val, ah->ah_sc->mem + reg_offset);
+               spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
+       } else
+               iowrite32(val, ah->ah_sc->mem + reg_offset);
+}
+
+static inline unsigned int ath9k_ioread32(struct ath_hal *ah, u32 reg_offset)
+{
+       u32 val;
+       if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) {
+               unsigned long flags;
+               spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
+               val = ioread32(ah->ah_sc->mem + reg_offset);
+               spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
+       } else
+               val = ioread32(ah->ah_sc->mem + reg_offset);
+       return val;
+}
+
 #endif /* CORE_H */

diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 34474ed..c38a00b 100644 (file)
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -437,6 +437,25 @@ static void ath9k_hw_set_defaults(struct ath_hal *ah)
        }
 
        ah->ah_config.intr_mitigation = 1;
+
+       /*
+        * We need this for PCI devices only (Cardbus, PCI, miniPCI)
+        * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
+        * This means we use it for all AR5416 devices, and the few
+        * minor PCI AR9280 devices out there.
+        *
+        * Serialization is required because these devices do not handle
+        * well the case of two concurrent reads/writes due to the latency
+        * involved. During one read/write another read/write can be issued
+        * on another CPU while the previous read/write may still be working
+        * on our hardware, if we hit this case the hardware poops in a loop.
+        * We prevent this by serializing reads and writes.
+        *
+        * This issue is not present on PCI-Express devices or pre-AR5416
+        * devices (legacy, 802.11abg).
+        */
+       if (num_possible_cpus() > 1)
+               ah->ah_config.serialize_regmode = SER_REG_MODE_AUTO;
 }
 
 static struct ath_hal_5416 *ath9k_hw_newstate(u16 devid,
@@ -668,7 +687,8 @@ static struct ath_hal *ath9k_hw_do_attach(u16 devid, struct ath_softc *sc,
        }
 
        if (ah->ah_config.serialize_regmode == SER_REG_MODE_AUTO) {
-               if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI) {
+               if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI ||
+                   (AR_SREV_9280(ah) && !ah->ah_isPciExpress)) {
                        ah->ah_config.serialize_regmode =
                                SER_REG_MODE_ON;
                } else {

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 0e80990..3c04044 100644 (file)
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1336,6 +1336,7 @@ static int ath_init(u16 devid, struct ath_softc *sc)
                printk(KERN_ERR "Unable to create debugfs files\n");
 
        spin_lock_init(&sc->sc_resetlock);
+       spin_lock_init(&sc->sc_serial_rw);
        mutex_init(&sc->mutex);
        tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
        tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet,

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index a611ad8..847057d 100644 (file)
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -575,13 +575,17 @@ static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 
        r = fill_ctrlset(mac, skb);
        if (r)
-               return r;
+               goto fail;
 
        info->rate_driver_data[0] = hw;
 
        r = zd_usb_tx(&mac->chip.usb, skb);
        if (r)
-               return r;
+               goto fail;
+       return 0;
+
+fail:
+       dev_kfree_skb(skb);
        return 0;
 }
 

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 94de503..37e3d5e 100644 (file)
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -752,6 +752,8 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
                skb_copy_queue_mapping(frag, first);
 
                frag->do_not_encrypt = first->do_not_encrypt;
+               frag->dev = first->dev;
+               frag->iif = first->iif;
 
                pos += copylen;
                left -= copylen;

diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index e28e2b8..092ae6f 100644 (file)
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -102,3 +102,13 @@ config LIB80211_CRYPT_CCMP
 
 config LIB80211_CRYPT_TKIP
        tristate
+
+config LIB80211_DEBUG
+       bool "lib80211 debugging messages"
+       depends on LIB80211
+       default n
+       ---help---
+         You can enable this if you want verbose debugging messages
+         from lib80211.
+
+         If unsure, say N.

diff --git a/net/wireless/lib80211_crypt_ccmp.c b/net/wireless/lib80211_crypt_ccmp.c
index db42819..2301dc1 100644 (file)
--- a/net/wireless/lib80211_crypt_ccmp.c
+++ b/net/wireless/lib80211_crypt_ccmp.c
@@ -337,6 +337,7 @@ static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
        pos += 8;
 
        if (ccmp_replay_check(pn, key->rx_pn)) {
+#ifdef CONFIG_LIB80211_DEBUG
                if (net_ratelimit()) {
                        printk(KERN_DEBUG "CCMP: replay detected: STA=%pM "
                                 "previous PN %02x%02x%02x%02x%02x%02x "
@@ -346,6 +347,7 @@ static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
                                 key->rx_pn[3], key->rx_pn[4], key->rx_pn[5],
                                 pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
                }
+#endif
                key->dot11RSNAStatsCCMPReplays++;
                return -4;
        }

diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index 7e8e22b..c362873 100644 (file)
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -465,12 +465,14 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
        pos += 8;
 
        if (tkip_replay_check(iv32, iv16, tkey->rx_iv32, tkey->rx_iv16)) {
+#ifdef CONFIG_LIB80211_DEBUG
                if (net_ratelimit()) {
                        printk(KERN_DEBUG "TKIP: replay detected: STA=%pM"
                               " previous TSC %08x%04x received TSC "
                               "%08x%04x\n", hdr->addr2,
                               tkey->rx_iv32, tkey->rx_iv16, iv32, iv16);
                }
+#endif
                tkey->dot11RSNAStatsTKIPReplays++;
                return -4;
        }
@@ -505,10 +507,12 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
                         * it needs to be recalculated for the next packet. */
                        tkey->rx_phase1_done = 0;
                }
+#ifdef CONFIG_LIB80211_DEBUG
                if (net_ratelimit()) {
                        printk(KERN_DEBUG "TKIP: ICV error detected: STA="
                               "%pM\n", hdr->addr2);
                }
+#endif
                tkey->dot11RSNAStatsTKIPICVErrors++;
                return -5;
        }