From 995c99268e0b12eb3c8939211ba5368dd92d98d9 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Sun, 30 Apr 2006 19:49:30 +0100 Subject: [PATCH] softmac: don't reassociate if user asked for deauthentication When wpa_supplicant exits, it uses SIOCSIWMLME to request deauthentication. softmac then tries to reassociate without any user intervention, which isn't the desired behaviour of this signal. This change makes softmac only attempt reassociation if the remote network itself deauthenticated us. Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville --- net/ieee80211/softmac/ieee80211softmac_auth.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c index 9a0eac6c61eb..d6a04f3ab86c 100644 --- a/net/ieee80211/softmac/ieee80211softmac_auth.c +++ b/net/ieee80211/softmac/ieee80211softmac_auth.c @@ -298,8 +298,6 @@ ieee80211softmac_deauth_from_net(struct ieee80211softmac_device *mac, /* can't transmit data right now... */ netif_carrier_off(mac->dev); - /* let's try to re-associate */ - schedule_work(&mac->associnfo.work); spin_unlock_irqrestore(&mac->lock, flags); } @@ -360,5 +358,8 @@ ieee80211softmac_deauth_resp(struct net_device *dev, struct ieee80211_deauth *de } ieee80211softmac_deauth_from_net(mac, net); + + /* let's try to re-associate */ + schedule_work(&mac->associnfo.work); return 0; } -- cgit v1.2.3-59-g8ed1b From d57336e3f2dd7c2d1fbe4a8323029869fb6e1f00 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Sun, 30 Apr 2006 22:09:07 +0100 Subject: [PATCH] softmac: make non-operational after being stopped zd1211 with softmac and wpa_supplicant revealed an issue with softmac and the use of workqueues. Some of the work functions actually reschedule themselves, so this meant that there could still be pending work after flush_scheduled_work() had been called during ieee80211softmac_stop(). This patch introduces a "running" flag which is used to ensure that rescheduling does not happen in this situation. I also used this flag to ensure that softmac's hooks into ieee80211 are non-operational once the stop operation has been started. This simply makes softmac a little more robust, because I could crash it easily by receiving frames in the short timeframe after shutting down softmac and before turning off the ZD1211 radio. (ZD1211 is now fixed as well!) Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/ieee80211softmac.h | 3 ++- net/ieee80211/softmac/ieee80211softmac_assoc.c | 17 +++++++++++++++-- net/ieee80211/softmac/ieee80211softmac_auth.c | 11 +++++++++++ net/ieee80211/softmac/ieee80211softmac_module.c | 4 ++++ net/ieee80211/softmac/ieee80211softmac_scan.c | 8 ++++++++ 5 files changed, 40 insertions(+), 3 deletions(-) diff --git a/include/net/ieee80211softmac.h b/include/net/ieee80211softmac.h index b1ebfbae397f..052ed596a4e4 100644 --- a/include/net/ieee80211softmac.h +++ b/include/net/ieee80211softmac.h @@ -204,7 +204,8 @@ struct ieee80211softmac_device { /* couple of flags */ u8 scanning:1, /* protects scanning from being done multiple times at once */ - associated:1; + associated:1, + running:1; struct ieee80211softmac_scaninfo *scaninfo; struct ieee80211softmac_assoc_info associnfo; diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c index fb79ce7d6439..57ea9f6f465c 100644 --- a/net/ieee80211/softmac/ieee80211softmac_assoc.c +++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c @@ -51,11 +51,12 @@ ieee80211softmac_assoc(struct ieee80211softmac_device *mac, struct ieee80211soft spin_lock_irqsave(&mac->lock, flags); mac->associnfo.associating = 1; mac->associated = 0; /* just to make sure */ - spin_unlock_irqrestore(&mac->lock, flags); /* Set a timer for timeout */ /* FIXME: make timeout configurable */ - schedule_delayed_work(&mac->associnfo.timeout, 5 * HZ); + if (likely(mac->running)) + schedule_delayed_work(&mac->associnfo.timeout, 5 * HZ); + spin_unlock_irqrestore(&mac->lock, flags); } void @@ -319,6 +320,9 @@ ieee80211softmac_handle_assoc_response(struct net_device * dev, u16 status = le16_to_cpup(&resp->status); struct ieee80211softmac_network *network = NULL; unsigned long flags; + + if (unlikely(!mac->running)) + return -ENODEV; spin_lock_irqsave(&mac->lock, flags); @@ -377,10 +381,16 @@ ieee80211softmac_handle_disassoc(struct net_device * dev, { struct ieee80211softmac_device *mac = ieee80211_priv(dev); unsigned long flags; + + if (unlikely(!mac->running)) + return -ENODEV; + if (memcmp(disassoc->header.addr2, mac->associnfo.bssid, ETH_ALEN)) return 0; + if (memcmp(disassoc->header.addr1, mac->dev->dev_addr, ETH_ALEN)) return 0; + dprintk(KERN_INFO PFX "got disassoc frame\n"); netif_carrier_off(dev); spin_lock_irqsave(&mac->lock, flags); @@ -400,6 +410,9 @@ ieee80211softmac_handle_reassoc_req(struct net_device * dev, struct ieee80211softmac_device *mac = ieee80211_priv(dev); struct ieee80211softmac_network *network; + if (unlikely(!mac->running)) + return -ENODEV; + network = ieee80211softmac_get_network_by_bssid(mac, resp->header.addr3); if (!network) { dprintkl(KERN_INFO PFX "reassoc request from unknown network\n"); diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c index d6a04f3ab86c..06e332624665 100644 --- a/net/ieee80211/softmac/ieee80211softmac_auth.c +++ b/net/ieee80211/softmac/ieee80211softmac_auth.c @@ -86,6 +86,11 @@ ieee80211softmac_auth_queue(void *data) /* Lock and set flags */ spin_lock_irqsave(&mac->lock, flags); + if (unlikely(!mac->running)) { + /* Prevent reschedule on workqueue flush */ + spin_unlock_irqrestore(&mac->lock, flags); + return; + } net->authenticated = 0; net->authenticating = 1; /* add a timeout call so we eventually give up waiting for an auth reply */ @@ -124,6 +129,9 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth) unsigned long flags; u8 * data; + if (unlikely(!mac->running)) + return -ENODEV; + /* Find correct auth queue item */ spin_lock_irqsave(&mac->lock, flags); list_for_each(list_ptr, &mac->auth_queue) { @@ -336,6 +344,9 @@ ieee80211softmac_deauth_resp(struct net_device *dev, struct ieee80211_deauth *de struct ieee80211softmac_network *net = NULL; struct ieee80211softmac_device *mac = ieee80211_priv(dev); + if (unlikely(!mac->running)) + return -ENODEV; + if (!deauth) { dprintk("deauth without deauth packet. eek!\n"); return 0; diff --git a/net/ieee80211/softmac/ieee80211softmac_module.c b/net/ieee80211/softmac/ieee80211softmac_module.c index be83bdc1644a..6252be2c0db9 100644 --- a/net/ieee80211/softmac/ieee80211softmac_module.c +++ b/net/ieee80211/softmac/ieee80211softmac_module.c @@ -89,6 +89,8 @@ ieee80211softmac_clear_pending_work(struct ieee80211softmac_device *sm) ieee80211softmac_wait_for_scan(sm); spin_lock_irqsave(&sm->lock, flags); + sm->running = 0; + /* Free all pending assoc work items */ cancel_delayed_work(&sm->associnfo.work); @@ -204,6 +206,8 @@ void ieee80211softmac_start(struct net_device *dev) assert(0); if (mac->txrates_change) mac->txrates_change(dev, change, &oldrates); + + mac->running = 1; } EXPORT_SYMBOL_GPL(ieee80211softmac_start); diff --git a/net/ieee80211/softmac/ieee80211softmac_scan.c b/net/ieee80211/softmac/ieee80211softmac_scan.c index 2b9e7edfa3ce..d31cf77498c4 100644 --- a/net/ieee80211/softmac/ieee80211softmac_scan.c +++ b/net/ieee80211/softmac/ieee80211softmac_scan.c @@ -115,7 +115,15 @@ void ieee80211softmac_scan(void *d) // TODO: is this if correct, or should we do this only if scanning from assoc request? if (sm->associnfo.req_essid.len) ieee80211softmac_send_mgt_frame(sm, &sm->associnfo.req_essid, IEEE80211_STYPE_PROBE_REQ, 0); + + spin_lock_irqsave(&sm->lock, flags); + if (unlikely(!sm->running)) { + /* Prevent reschedule on workqueue flush */ + spin_unlock_irqrestore(&sm->lock, flags); + break; + } schedule_delayed_work(&si->softmac_scan, IEEE80211SOFTMAC_PROBE_DELAY); + spin_unlock_irqrestore(&sm->lock, flags); return; } else { dprintk(PFX "Not probing Channel %d (not allowed here)\n", si->channels[current_channel_idx].channel); -- cgit v1.2.3-59-g8ed1b From 5b4b9775a00c20ade1b1ac8aa25e0e4059d6243e Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Mon, 1 May 2006 22:43:00 +0200 Subject: [PATCH] bcm43xx: fix iwmode crash when down This fixes a crash when iwconfig ethX mode foo is done before ifconfig ethX up or after ifconfig ethX down Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- drivers/net/wireless/bcm43xx/bcm43xx_wx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_wx.c b/drivers/net/wireless/bcm43xx/bcm43xx_wx.c index 3edbb481a0a0..b45063974ae9 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_wx.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_wx.c @@ -182,8 +182,11 @@ static int bcm43xx_wx_set_mode(struct net_device *net_dev, mode = BCM43xx_INITIAL_IWMODE; bcm43xx_lock_mmio(bcm, flags); - if (bcm->ieee->iw_mode != mode) - bcm43xx_set_iwmode(bcm, mode); + if (bcm->initialized) { + if (bcm->ieee->iw_mode != mode) + bcm43xx_set_iwmode(bcm, mode); + } else + bcm->ieee->iw_mode = mode; bcm43xx_unlock_mmio(bcm, flags); return 0; -- cgit v1.2.3-59-g8ed1b From f21709d70ad6d7ad50288f7056c3a368138b017c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 4 May 2006 19:47:19 +0200 Subject: [PATCH] ieee80211: Fix A band channel count (resent) The channel count for 802.11a is still not right. We better compute it from the min and max channel numbers, rather than hardcoding it. Signed-off-by: Jean Delvare Signed-off-by: John W. Linville --- include/net/ieee80211.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h index 4725ff861c57..d5926bfb1fc9 100644 --- a/include/net/ieee80211.h +++ b/include/net/ieee80211.h @@ -955,11 +955,13 @@ enum ieee80211_state { #define IEEE80211_24GHZ_MIN_CHANNEL 1 #define IEEE80211_24GHZ_MAX_CHANNEL 14 -#define IEEE80211_24GHZ_CHANNELS 14 +#define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \ + IEEE80211_24GHZ_MIN_CHANNEL + 1) #define IEEE80211_52GHZ_MIN_CHANNEL 34 #define IEEE80211_52GHZ_MAX_CHANNEL 165 -#define IEEE80211_52GHZ_CHANNELS 131 +#define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \ + IEEE80211_52GHZ_MIN_CHANNEL + 1) enum { IEEE80211_CH_PASSIVE_ONLY = (1 << 0), -- cgit v1.2.3-59-g8ed1b From f9f7b9602ecb66f55718d6d1afa3e2b1e721b22d Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Fri, 5 May 2006 01:26:29 +0200 Subject: [PATCH] bcm43xx: check for valid MAC address in SPROM Check for valid MAC address in SPROM fields instead of relying on PHY type while setting the MAC address in the networking subsystem, as some devices have multiple PHYs. Signed-off-by: Stefano Brivio Signed-off-by: John W. Linville --- drivers/net/wireless/bcm43xx/bcm43xx_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index 9a06e61df0a2..4be2d9b5749b 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -3482,7 +3482,7 @@ static int bcm43xx_attach_board(struct bcm43xx_private *bcm) bcm43xx_pctl_set_crystal(bcm, 0); /* Set the MAC address in the networking subsystem */ - if (bcm43xx_current_phy(bcm)->type == BCM43xx_PHYTYPE_A) + if (is_valid_ether_addr(bcm->sprom.et1macaddr)) memcpy(bcm->net_dev->dev_addr, bcm->sprom.et1macaddr, 6); else memcpy(bcm->net_dev->dev_addr, bcm->sprom.il0macaddr, 6); -- cgit v1.2.3-59-g8ed1b From 869aaab1812c4212e65fb181e94b824cf49f9509 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Fri, 5 May 2006 17:23:51 +0200 Subject: [PATCH] bcm43xx: Fix array overrun in bcm43xx_geo_init The problem here is that the bcm34xx driver and the ieee80211 stack do not agree on what channels are possible for 802.11a. The ieee80211 stack only wants channels between 34 and 165, while the bcm43xx driver accepts anything from 0 to 200. I made the bcm43xx driver comply with the ieee80211 stack expectations, by using the proper constants. Signed-off-by: Jean Delvare [mb]: Reduce stack usage by kzalloc-ing ieee80211_geo Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- drivers/net/wireless/bcm43xx/bcm43xx_main.c | 43 +++++++++++++++++------------ drivers/net/wireless/bcm43xx/bcm43xx_main.h | 6 ++-- 2 files changed, 30 insertions(+), 19 deletions(-) diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index 4be2d9b5749b..e2982a83ae42 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -939,9 +939,9 @@ static int bcm43xx_sprom_extract(struct bcm43xx_private *bcm) return 0; } -static void bcm43xx_geo_init(struct bcm43xx_private *bcm) +static int bcm43xx_geo_init(struct bcm43xx_private *bcm) { - struct ieee80211_geo geo; + struct ieee80211_geo *geo; struct ieee80211_channel *chan; int have_a = 0, have_bg = 0; int i; @@ -949,7 +949,10 @@ static void bcm43xx_geo_init(struct bcm43xx_private *bcm) struct bcm43xx_phyinfo *phy; const char *iso_country; - memset(&geo, 0, sizeof(geo)); + geo = kzalloc(sizeof(*geo), GFP_KERNEL); + if (!geo) + return -ENOMEM; + for (i = 0; i < bcm->nr_80211_available; i++) { phy = &(bcm->core_80211_ext[i].phy); switch (phy->type) { @@ -967,31 +970,36 @@ static void bcm43xx_geo_init(struct bcm43xx_private *bcm) iso_country = bcm43xx_locale_iso(bcm->sprom.locale); if (have_a) { - for (i = 0, channel = 0; channel < 201; channel++) { - chan = &geo.a[i++]; + for (i = 0, channel = IEEE80211_52GHZ_MIN_CHANNEL; + channel <= IEEE80211_52GHZ_MAX_CHANNEL; channel++) { + chan = &geo->a[i++]; chan->freq = bcm43xx_channel_to_freq_a(channel); chan->channel = channel; } - geo.a_channels = i; + geo->a_channels = i; } if (have_bg) { - for (i = 0, channel = 1; channel < 15; channel++) { - chan = &geo.bg[i++]; + for (i = 0, channel = IEEE80211_24GHZ_MIN_CHANNEL; + channel <= IEEE80211_24GHZ_MAX_CHANNEL; channel++) { + chan = &geo->bg[i++]; chan->freq = bcm43xx_channel_to_freq_bg(channel); chan->channel = channel; } - geo.bg_channels = i; + geo->bg_channels = i; } - memcpy(geo.name, iso_country, 2); + memcpy(geo->name, iso_country, 2); if (0 /*TODO: Outdoor use only */) - geo.name[2] = 'O'; + geo->name[2] = 'O'; else if (0 /*TODO: Indoor use only */) - geo.name[2] = 'I'; + geo->name[2] = 'I'; else - geo.name[2] = ' '; - geo.name[3] = '\0'; + geo->name[2] = ' '; + geo->name[3] = '\0'; + + ieee80211_set_geo(bcm->ieee, geo); + kfree(geo); - ieee80211_set_geo(bcm->ieee, &geo); + return 0; } /* DummyTransmission function, as documented on @@ -3479,6 +3487,9 @@ static int bcm43xx_attach_board(struct bcm43xx_private *bcm) goto err_80211_unwind; bcm43xx_wireless_core_disable(bcm); } + err = bcm43xx_geo_init(bcm); + if (err) + goto err_80211_unwind; bcm43xx_pctl_set_crystal(bcm, 0); /* Set the MAC address in the networking subsystem */ @@ -3487,8 +3498,6 @@ static int bcm43xx_attach_board(struct bcm43xx_private *bcm) else memcpy(bcm->net_dev->dev_addr, bcm->sprom.il0macaddr, 6); - bcm43xx_geo_init(bcm); - snprintf(bcm->nick, IW_ESSID_MAX_SIZE, "Broadcom %04X", bcm->chip_id); diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.h b/drivers/net/wireless/bcm43xx/bcm43xx_main.h index eca79a38594a..30a202b258b5 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.h +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.h @@ -118,12 +118,14 @@ int bcm43xx_channel_to_freq(struct bcm43xx_private *bcm, static inline int bcm43xx_is_valid_channel_a(u8 channel) { - return (channel <= 200); + return (channel >= IEEE80211_52GHZ_MIN_CHANNEL + && channel <= IEEE80211_52GHZ_MAX_CHANNEL); } static inline int bcm43xx_is_valid_channel_bg(u8 channel) { - return (channel >= 1 && channel <= 14); + return (channel >= IEEE80211_24GHZ_MIN_CHANNEL + && channel <= IEEE80211_24GHZ_MAX_CHANNEL); } static inline int bcm43xx_is_valid_channel(struct bcm43xx_private *bcm, -- cgit v1.2.3-59-g8ed1b From 178e0cc5ff249965c6cfbd78b1af6a5e614d837c Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 5 May 2006 18:19:37 +0100 Subject: [PATCH] bcm43xx: Fix access to non-existent PHY registers Fix the conditions under which we poke at the APHY registers in bcm43xx_phy_initg() to avoid a machine check on chips where they don't exist. Signed-off-by: David Woodhouse Signed-off-by: John W. Linville --- drivers/net/wireless/bcm43xx/bcm43xx_phy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_phy.c b/drivers/net/wireless/bcm43xx/bcm43xx_phy.c index 33137165727f..b0abac515530 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_phy.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_phy.c @@ -1287,7 +1287,7 @@ static void bcm43xx_phy_initg(struct bcm43xx_private *bcm) if (radio->revision == 8) bcm43xx_phy_write(bcm, 0x0805, 0x3230); bcm43xx_phy_init_pctl(bcm); - if (bcm->chip_id == 0x4306 && bcm->chip_package != 2) { + if (bcm->chip_id == 0x4306 && bcm->chip_package == 2) { bcm43xx_phy_write(bcm, 0x0429, bcm43xx_phy_read(bcm, 0x0429) & 0xBFFF); bcm43xx_phy_write(bcm, 0x04C3, -- cgit v1.2.3-59-g8ed1b