From 3c34a5d821b825b720189e87561ba18500cf8026 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 18 Aug 2008 15:40:02 -0400 Subject: atmel: return ENOENT on request_firmware failure Return errors from request_firmware() (like other drivers that do firmware load on device open) and make up plausible codes for other error conditions. Gives userspace tools like NetworkManager a clue that firmware may be missing when the result of setting IFF_UP is ENOENT. Signed-off-by: Dan Williams v2: fix reversed check of atmel_wakeup_firmware() in probe_atmel_card() Signed-off-by: John W. Linville --- drivers/net/wireless/atmel.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c index bd35bb0a1480..f23bcd07dee8 100644 --- a/drivers/net/wireless/atmel.c +++ b/drivers/net/wireless/atmel.c @@ -1304,7 +1304,7 @@ EXPORT_SYMBOL(atmel_open); int atmel_open(struct net_device *dev) { struct atmel_private *priv = netdev_priv(dev); - int i, channel; + int i, channel, err; /* any scheduled timer is no longer needed and might screw things up.. */ del_timer_sync(&priv->management_timer); @@ -1328,8 +1328,9 @@ int atmel_open(struct net_device *dev) priv->site_survey_state = SITE_SURVEY_IDLE; priv->station_is_associated = 0; - if (!reset_atmel_card(dev)) - return -EAGAIN; + err = reset_atmel_card(dev); + if (err) + return err; if (priv->config_reg_domain) { priv->reg_domain = priv->config_reg_domain; @@ -3580,12 +3581,12 @@ static int atmel_wakeup_firmware(struct atmel_private *priv) if (i == 0) { printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name); - return 0; + return -EIO; } if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) { printk(KERN_ALERT "%s: card missing.\n", priv->dev->name); - return 0; + return -ENODEV; } /* now check for completion of MAC initialization through @@ -3609,19 +3610,19 @@ static int atmel_wakeup_firmware(struct atmel_private *priv) if (i == 0) { printk(KERN_ALERT "%s: MAC failed to initialise.\n", priv->dev->name); - return 0; + return -EIO; } /* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */ if ((mr3 & MAC_INIT_COMPLETE) && !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) { printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name); - return 0; + return -EIO; } if ((mr1 & MAC_INIT_COMPLETE) && !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) { printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name); - return 0; + return -EIO; } atmel_copy_to_host(priv->dev, (unsigned char *)iface, @@ -3642,7 +3643,7 @@ static int atmel_wakeup_firmware(struct atmel_private *priv) iface->func_ctrl = le16_to_cpu(iface->func_ctrl); iface->mac_status = le16_to_cpu(iface->mac_status); - return 1; + return 0; } /* determine type of memory and MAC address */ @@ -3693,7 +3694,7 @@ static int probe_atmel_card(struct net_device *dev) /* Standard firmware in flash, boot it up and ask for the Mac Address */ priv->card_type = CARD_TYPE_SPI_FLASH; - if (atmel_wakeup_firmware(priv)) { + if (atmel_wakeup_firmware(priv) == 0) { atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6); /* got address, now squash it again until the network @@ -3835,6 +3836,7 @@ static int reset_atmel_card(struct net_device *dev) struct atmel_private *priv = netdev_priv(dev); u8 configuration; int old_state = priv->station_state; + int err = 0; /* data to add to the firmware names, in priority order this implemenents firmware versioning */ @@ -3868,11 +3870,12 @@ static int reset_atmel_card(struct net_device *dev) dev->name); strcpy(priv->firmware_id, "atmel_at76c502.bin"); } - if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) != 0) { + err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev); + if (err != 0) { printk(KERN_ALERT "%s: firmware %s is missing, cannot continue.\n", dev->name, priv->firmware_id); - return 0; + return err; } } else { int fw_index = 0; @@ -3901,7 +3904,7 @@ static int reset_atmel_card(struct net_device *dev) "%s: firmware %s is missing, cannot start.\n", dev->name, priv->firmware_id); priv->firmware_id[0] = '\0'; - return 0; + return -ENOENT; } } @@ -3926,8 +3929,9 @@ static int reset_atmel_card(struct net_device *dev) release_firmware(fw_entry); } - if (!atmel_wakeup_firmware(priv)) - return 0; + err = atmel_wakeup_firmware(priv); + if (err != 0) + return err; /* Check the version and set the correct flag for wpa stuff, old and new firmware is incompatible. @@ -3968,10 +3972,9 @@ static int reset_atmel_card(struct net_device *dev) if (!priv->radio_on_broken) { if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) == CMD_STATUS_REJECTED_RADIO_OFF) { - printk(KERN_INFO - "%s: cannot turn the radio on. (Hey radio, you're beautiful!)\n", + printk(KERN_INFO "%s: cannot turn the radio on.\n", dev->name); - return 0; + return -EIO; } } @@ -4006,7 +4009,7 @@ static int reset_atmel_card(struct net_device *dev) wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); } - return 1; + return 0; } static void atmel_send_command(struct atmel_private *priv, int command, -- cgit v1.2.3 From d0c2912fe8df81a8b723fb6ec4d4cdf523cbaff7 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 18 Aug 2008 15:32:41 -0400 Subject: atmel: try open system authentication too When the AP rejects a Shared Key authentication request, try Open System auth too. Signed-off-by: Dan Williams Signed-off-by: John W. Linville --- drivers/net/wireless/atmel.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c index f23bcd07dee8..bd65c485098c 100644 --- a/drivers/net/wireless/atmel.c +++ b/drivers/net/wireless/atmel.c @@ -3062,12 +3062,20 @@ static void authenticate(struct atmel_private *priv, u16 frame_len) } if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { - /* Do opensystem first, then try sharedkey */ + /* Flip back and forth between WEP auth modes until the max + * authentication tries has been exceeded. + */ if (system == WLAN_AUTH_OPEN) { priv->CurrentAuthentTransactionSeqNum = 0x001; priv->exclude_unencrypted = 1; send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0); return; + } else if ( system == WLAN_AUTH_SHARED_KEY + && priv->wep_is_on) { + priv->CurrentAuthentTransactionSeqNum = 0x001; + priv->exclude_unencrypted = 0; + send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0); + return; } else if (priv->connect_to_any_BSS) { int bss_index; -- cgit v1.2.3 From 004829730cb1b03abe7555e1c1faadec62cbcf6f Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 18 Aug 2008 21:45:27 +0200 Subject: Ath5k: lock beacons Beacons setup and config was racy with beacon send. Ensure that ISR and reset functions see consistent state of bbuf. Use also dev_kfree_skb_any in ath5k_txbuf_free since we call it from atomic now. Signed-off-by: Jiri Slaby Cc: Nick Kossifidis Cc: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 15 ++++++++++++--- drivers/net/wireless/ath5k/base.h | 1 + 2 files changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index b20a45aa8680..7bc012fca059 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -251,7 +251,7 @@ static inline void ath5k_txbuf_free(struct ath5k_softc *sc, return; pci_unmap_single(sc->pdev, bf->skbaddr, bf->skb->len, PCI_DMA_TODEVICE); - dev_kfree_skb(bf->skb); + dev_kfree_skb_any(bf->skb); bf->skb = NULL; } @@ -466,6 +466,7 @@ ath5k_pci_probe(struct pci_dev *pdev, mutex_init(&sc->lock); spin_lock_init(&sc->rxbuflock); spin_lock_init(&sc->txbuflock); + spin_lock_init(&sc->block); /* Set private data */ pci_set_drvdata(pdev, hw); @@ -2179,8 +2180,11 @@ ath5k_beacon_config(struct ath5k_softc *sc) sc->imask |= AR5K_INT_SWBA; - if (ath5k_hw_hasveol(ah)) + if (ath5k_hw_hasveol(ah)) { + spin_lock(&sc->block); ath5k_beacon_send(sc); + spin_unlock(&sc->block); + } } /* TODO else AP */ @@ -2403,7 +2407,9 @@ ath5k_intr(int irq, void *dev_id) TSF_TO_TU(tsf), (unsigned long long) tsf); } else { + spin_lock(&sc->block); ath5k_beacon_send(sc); + spin_unlock(&sc->block); } } if (status & AR5K_INT_RXEOL) { @@ -3050,6 +3056,7 @@ static int ath5k_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb) { struct ath5k_softc *sc = hw->priv; + unsigned long flags; int ret; ath5k_debug_dump_skb(sc, skb, "BC ", 1); @@ -3059,12 +3066,14 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb) goto end; } + spin_lock_irqsave(&sc->block, flags); ath5k_txbuf_free(sc, sc->bbuf); sc->bbuf->skb = skb; ret = ath5k_beacon_setup(sc, sc->bbuf); if (ret) sc->bbuf->skb = NULL; - else { + spin_unlock_irqrestore(&sc->block, flags); + if (!ret) { ath5k_beacon_config(sc); mmiowb(); } diff --git a/drivers/net/wireless/ath5k/base.h b/drivers/net/wireless/ath5k/base.h index d7e03e6b8271..7ec2f377d5c7 100644 --- a/drivers/net/wireless/ath5k/base.h +++ b/drivers/net/wireless/ath5k/base.h @@ -172,6 +172,7 @@ struct ath5k_softc { struct tasklet_struct txtq; /* tx intr tasklet */ struct ath5k_led tx_led; /* tx led */ + spinlock_t block; /* protects beacon */ struct ath5k_buf *bbuf; /* beacon buffer */ unsigned int bhalq, /* SW q for outgoing beacons */ bmisscount, /* missed beacon transmits */ -- cgit v1.2.3 From 67d2e2dfab31b4c0497ce8a84d63efc931f10bb7 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 18 Aug 2008 21:45:28 +0200 Subject: Ath5k: fix bintval setup bintval is set to the initial value at .config_interface which is too late, since it overwrites previously set value from .config. Move the initialization to the .add_interface. Signed-off-by: Jiri Slaby Cc: Nick Kossifidis Cc: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index 7bc012fca059..0676c6d84383 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -2751,6 +2751,11 @@ static int ath5k_add_interface(struct ieee80211_hw *hw, ret = -EOPNOTSUPP; goto end; } + + /* Set to a reasonable value. Note that this will + * be set to mac80211's value at ath5k_config(). */ + sc->bintval = 1000; + ret = 0; end: mutex_unlock(&sc->lock); @@ -2795,9 +2800,6 @@ ath5k_config_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ath5k_hw *ah = sc->ah; int ret; - /* Set to a reasonable value. Note that this will - * be set to mac80211's value at ath5k_config(). */ - sc->bintval = 1000; mutex_lock(&sc->lock); if (sc->vif != vif) { ret = -EIO; -- cgit v1.2.3