Dave, Here is a group of patches intended for 2.6.29. The one from me is minor, but it cuts-down on log SPAM for ipw2100, ipw2200, and hostap users. The two from Jouni fix some panics he observed himself. The first one from Luis fixes bug 12110 at bugzilla.kernel.org. I know he has worked on it for a long time and I've had several desperate users asking for it, so it must be good. :-) Unfortunately, it causes some nasty merge errors with what is in net-next-2.6 and wireless-next-2.6. I created a merge-test branch in wireless-next-2.6, and the merge commit log goes into more detail about resolving the issue. In short, you probably want to diff drivers/net/ath9k against the merge-test branch... Please let me know if there are problems! Thanks, John --- Individual patches are available here: http://www.kernel.org/pub/linux/kernel/people/linville/wireless-2.6/ --- The following changes since commit ea8dbdd17099a9a5864ebd4c87e01e657b19c7ab: françois romieu (1): r8169: revert "r8169: read MAC address from EEPROM on init (2nd attempt)" are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6.git master John W. Linville (1): lib80211: silence excessive crypto debugging messages Jouni Malinen (2): mac80211: Fix panic on fragmentation with power saving zd1211rw: Do not panic on device eject when associated Luis R. Rodriguez (2): ath9k: implement IO serialization ath9k: AR9280 PCI devices must serialize IO as well drivers/net/wireless/ath9k/ath9k.h | 4 +- drivers/net/wireless/ath9k/core.h | 33 ++++++++++++++++++++++++++++++++ drivers/net/wireless/ath9k/hw.c | 22 ++++++++++++++++++++- drivers/net/wireless/ath9k/main.c | 1 + drivers/net/wireless/zd1211rw/zd_mac.c | 8 +++++- net/mac80211/tx.c | 2 + net/wireless/Kconfig | 10 +++++++++ net/wireless/lib80211_crypt_ccmp.c | 2 + net/wireless/lib80211_crypt_tkip.c | 4 +++ 9 files changed, 81 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h index d278135..6650f60 100644 --- 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 --- 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 --- 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 --- 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 --- 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 --- 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 --- 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 --- 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 --- 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; } -- John W. Linville Someday the world will need a hero, and you linville@xxxxxxxxxxxxx might be all we have. Be ready. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
