* Re: is L1 really disabled in iwlwifi
From: Bjorn Helgaas @ 2013-05-16 22:55 UTC (permalink / raw)
To: Matthew Garrett
Cc: Rafael J. Wysocki, Emmanuel Grumbach, Stanislaw Gruszka,
linux-pci@vger.kernel.org, linux-wireless, John Linville,
Roman Yepishev, Guy, Wey-Yi, Mike Miller, iss_storagedev@hp.com,
Guo-Fu Tseng, netdev@vger.kernel.org, Francois Romieu,
nic_swsd@realtek.com, aacraid@adaptec.com,
linux-kernel@vger.kernel.org
In-Reply-To: <1368303730.2425.47.camel@x230>
On Sat, May 11, 2013 at 08:22:11PM +0000, Matthew Garrett wrote:
> On Sat, 2013-05-11 at 22:26 +0200, Rafael J. Wysocki wrote:
> > On Friday, May 10, 2013 04:52:57 PM Bjorn Helgaas wrote:
> > > I propose the following patch. Any comments?
> >
> > In my opinion this is dangerous, because it opens us to bugs that right now
> > are prevented from happening due to the way the code works.
>
> Right, I'm also not entirely comfortable with this. The current
> behaviour may be confusing, but we could reduce that by renaming the
> functions. I'm still not clear on whether anyone's actually seeing
> problems caused by the existing behaviour.
I couldn't imagine that silently ignoring the request to disable ASPM
would be the right thing, but I spent a long time experimenting with
Windows on qemu, and I think you're right. Windows 7 also seems to
ignore the "PciASPMOptOut" directive when we don't have permission
to manage ASPM. All the gory details are at
https://bugzilla.kernel.org/show_bug.cgi?id=57331
The current behavior is definitely confusing. I hate to rename or change
pci_disable_link_state() because it's exported and we'd have to maintain
the old interface for a while anyway. And I don't really want to return
failure to drivers, because I think that would encourage people to fiddle
with the Link Control register directly in the driver, which doesn't seem
like a good idea.
And you're also right that (as far as I know) there's not an actual
problem with the current behavior other than the confusion it causes.
So, how about something like the following patch, which just prints a
warning when we can't do what the driver requested? I suppose this may
also be a nuisance, because users will be worried, but they can't actually
*do* anything about it. Maybe it should be dev_info() instead.
commit f1956960fa0759c53b28e3a2810bd7e1b6e8925f
Author: Bjorn Helgaas <bhelgaas@google.com>
Date: Wed May 15 17:02:37 2013 -0600
PCI/ASPM: Warn when driver asks to disable ASPM, but we can't do it
Some devices have hardware problems related to using ASPM. Drivers for
these devices use pci_disable_link_state() to prevent their device from
entering L0s or L1. But on platforms where the OS doesn't have permission
to manage ASPM, pci_disable_link_state() doesn't actually disable ASPM.
Windows has a similar mechanism ("PciASPMOptOut"), and when the OS doesn't
have control of ASPM, it doesn't actually disable ASPM either.
This patch just adds a warning in dmesg about the fact that
pci_disable_link_state() is doing nothing.
Reported-by: Emmanuel Grumbach <egrumbach@gmail.com>
Reference: https://lkml.kernel.org/r/CANUX_P3F5YhbZX3WGU-j1AGpbXb_T9Bis2ErhvKkFMtDvzatVQ@mail.gmail.com
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=57331
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index d320df6..faa83b6 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -724,9 +724,6 @@ static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem,
struct pci_dev *parent = pdev->bus->self;
struct pcie_link_state *link;
- if (aspm_disabled && !force)
- return;
-
if (!pci_is_pcie(pdev))
return;
@@ -736,6 +733,19 @@ static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem,
if (!parent || !parent->link_state)
return;
+ /*
+ * A driver requested that ASPM be disabled on this device, but
+ * if we don't have permission to manage ASPM (e.g., on ACPI
+ * systems we have to observe the FADT ACPI_FADT_NO_ASPM bit and
+ * the _OSC method), we can't honor that request. Windows has
+ * a similar mechanism using "PciASPMOptOut", which is also
+ * ignored in this situation.
+ */
+ if (aspm_disabled && !force) {
+ dev_warn(&pdev->dev, "can't disable ASPM; OS doesn't have ASPM control\n");
+ return;
+ }
+
if (sem)
down_read(&pci_bus_sem);
mutex_lock(&aspm_lock);
^ permalink raw reply related
* Re: [ath9k-devel] ath9k_htc: Target is unresponsive
From: Ignacy Gawedzki @ 2013-05-16 23:48 UTC (permalink / raw)
To: Oleksij Rempel, ath9k-devel, linux-wireless
In-Reply-To: <20130516185030.GB16833@zenon.in.qult.net>
On Thu, May 16, 2013 at 08:50:30PM +0200, thus spake Ignacy Gawedzki:
> I'll try on yet another one and will tell you the results.
Just tried on ICH7, same thing. The easiest way to reproduce the bug is to
boot into single user mode ("recovery mode" on Ubuntu), in order to prevent
any NetworkManager or udev from interfering. Then, without any attempt to up
the interface, reboot the system by typing "reboot" in a root shell.
--
"The whole problem with the world is that fools and fanatics are
always so certain of themselves, and wiser people so full of doubts."
- Bertrand Russell
^ permalink raw reply
* Re: [ath9k-devel] ath9k_htc: Target is unresponsive
From: Forest Bond @ 2013-05-16 23:45 UTC (permalink / raw)
To: Ignacy Gawedzki, Oleksij Rempel, ath9k-devel, linux-wireless
In-Reply-To: <20130516234857.GA17867@zenon.in.qult.net>
[-- Attachment #1: Type: text/plain, Size: 720 bytes --]
Hi,
On Fri, May 17, 2013 at 01:48:57AM +0200, Ignacy Gawedzki wrote:
> On Thu, May 16, 2013 at 08:50:30PM +0200, thus spake Ignacy Gawedzki:
> > I'll try on yet another one and will tell you the results.
>
> Just tried on ICH7, same thing. The easiest way to reproduce the bug is to
> boot into single user mode ("recovery mode" on Ubuntu), in order to prevent
> any NetworkManager or udev from interfering. Then, without any attempt to up
> the interface, reboot the system by typing "reboot" in a root shell.
FWIW, this has also been a problem for me on Ubuntu 12.04. I can reproduce it
the same way.
Thanks,
Forest
--
Forest Bond
http://www.alittletooquiet.net
http://www.rapidrollout.com
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
^ permalink raw reply
* Re: is L1 really disabled in iwlwifi
From: Emmanuel Grumbach @ 2013-05-17 5:49 UTC (permalink / raw)
To: Bjorn Helgaas
Cc: Matthew Garrett, Rafael J. Wysocki, Stanislaw Gruszka,
linux-pci@vger.kernel.org, linux-wireless, John Linville,
Roman Yepishev, Guy, Wey-Yi, Mike Miller, iss_storagedev@hp.com,
Guo-Fu Tseng, netdev@vger.kernel.org, Francois Romieu,
nic_swsd@realtek.com, aacraid@adaptec.com,
linux-kernel@vger.kernel.org
In-Reply-To: <20130516225535.GA27962@google.com>
>
> I couldn't imagine that silently ignoring the request to disable ASPM
> would be the right thing, but I spent a long time experimenting with
> Windows on qemu, and I think you're right. Windows 7 also seems to
> ignore the "PciASPMOptOut" directive when we don't have permission
> to manage ASPM. All the gory details are at
> https://bugzilla.kernel.org/show_bug.cgi?id=57331
>
> The current behavior is definitely confusing. I hate to rename or change
> pci_disable_link_state() because it's exported and we'd have to maintain
> the old interface for a while anyway. And I don't really want to return
> failure to drivers, because I think that would encourage people to fiddle
> with the Link Control register directly in the driver, which doesn't seem
> like a good idea.
>
> And you're also right that (as far as I know) there's not an actual
> problem with the current behavior other than the confusion it causes.
>
> So, how about something like the following patch, which just prints a
> warning when we can't do what the driver requested? I suppose this may
> also be a nuisance, because users will be worried, but they can't actually
> *do* anything about it. Maybe it should be dev_info() instead.
>
Good for me - now I would be notified that something wrong happened.
^ permalink raw reply
* Re: [ath9k-devel] ath9k_htc: Target is unresponsive
From: Johannes Stezenbach @ 2013-05-17 6:00 UTC (permalink / raw)
To: Forest Bond; +Cc: Ignacy Gawedzki, Oleksij Rempel, ath9k-devel, linux-wireless
In-Reply-To: <20130516234526.GH3795@alittletooquiet.net>
On Thu, May 16, 2013 at 07:45:26PM -0400, Forest Bond wrote:
> On Fri, May 17, 2013 at 01:48:57AM +0200, Ignacy Gawedzki wrote:
> > On Thu, May 16, 2013 at 08:50:30PM +0200, thus spake Ignacy Gawedzki:
> > > I'll try on yet another one and will tell you the results.
> >
> > Just tried on ICH7, same thing. The easiest way to reproduce the bug is to
> > boot into single user mode ("recovery mode" on Ubuntu), in order to prevent
> > any NetworkManager or udev from interfering. Then, without any attempt to up
> > the interface, reboot the system by typing "reboot" in a root shell.
>
> FWIW, this has also been a problem for me on Ubuntu 12.04. I can reproduce it
> the same way.
FWIW, I also met this problem after I added ath9k_htc
to my initrd (via /etc/initramfs-tools/modules).
So I removed it and the issue went away. I first
noticed it after resume from suspend-to-disk, but
later found it doesn't work after warm reboot, too.
The mainboard has Intel H77 chipset, the TL-WN722N is
plugged into USB2.0 port.
Johannes
^ permalink raw reply
* AR9227: Can't set master mode
From: Felix Blanke @ 2013-05-17 8:54 UTC (permalink / raw)
To: linux-wireless
Hi,
first: Please CC me as I'm not subscribed to the list.
I have the following wireless card: 04:02.0 Network controller:
Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)
I can't set it to master mode, but this card should support it:
server ~ # iwconfig wlp4s2
wlp4s2 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
server ~ # iwconfig wlp4s2 mode Master
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlp4s2 ; Invalid argument.
My kernel config should be correct:
server linux # cat .config | grep ATH9K
CONFIG_ATH9K_HW=y
CONFIG_ATH9K_COMMON=y
# CONFIG_ATH9K_BTCOEX_SUPPORT is not set
CONFIG_ATH9K=y
CONFIG_ATH9K_PCI=y
# CONFIG_ATH9K_AHB is not set
# CONFIG_ATH9K_DEBUGFS is not set
CONFIG_ATH9K_RATE_CONTROL=y
# CONFIG_ATH9K_HTC is not set
server linux # cat .config | grep MAC80211
CONFIG_MAC80211=y
CONFIG_MAC80211_HAS_RC=y
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_MINSTREL_HT=y
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
# CONFIG_MAC80211_MESH is not set
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_MESSAGE_TRACING is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
# CONFIG_MAC80211_HWSIM is not set
I can scan for wireless networks and probably also connect to them
(never tested because this is not an use case for me).
Any ideas? Thanks in advance!
Kind regards,
Felix
^ permalink raw reply
* Re: AR9227: Can't set master mode
From: Felix Blanke @ 2013-05-17 9:21 UTC (permalink / raw)
To: Thomas Klute; +Cc: linux-wireless
In-Reply-To: <5195F5BB.6030306@uni-dortmund.de>
I knew about hostapd, but I wanted to test the master mode first. You
can still find a lot of tutorials that uses this command to set it to
master mode :( So those are all outdated?
I'll try messing around with hostapd. Thanks for your reply!
On Fri, May 17, 2013 at 11:17 AM, Thomas Klute
<thomas2.klute@uni-dortmund.de> wrote:
> Am 17.05.2013 10:54, schrieb Felix Blanke:
>> Hi,
>>
>> first: Please CC me as I'm not subscribed to the list.
>>
>> I have the following wireless card: 04:02.0 Network controller:
>> Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)
>>
>> I can't set it to master mode, but this card should support it:
>>
>> server ~ # iwconfig wlp4s2
>> wlp4s2 IEEE 802.11bgn ESSID:off/any
>> Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm
>> Retry long limit:7 RTS thr:off Fragment thr:off
>> Encryption key:off
>> Power Management:off
>>
>> server ~ # iwconfig wlp4s2 mode Master
>> Error for wireless request "Set Mode" (8B06) :
>> SET failed on device wlp4s2 ; Invalid argument.
>
> You cannot set any card to master mode this way, you have to use hostapd
> to set up the access point interface. The documentation at
> http://wireless.kernel.org/en/users/Documentation/hostapd should help. :-)
>
> I'd also recommend using iw instead of iwconfig, see
> http://wireless.kernel.org/en/users/Documentation/iw
>
>> My kernel config should be correct:
>>
>> server linux # cat .config | grep ATH9K
>> CONFIG_ATH9K_HW=y
>> CONFIG_ATH9K_COMMON=y
>> # CONFIG_ATH9K_BTCOEX_SUPPORT is not set
>> CONFIG_ATH9K=y
>> CONFIG_ATH9K_PCI=y
>> # CONFIG_ATH9K_AHB is not set
>> # CONFIG_ATH9K_DEBUGFS is not set
>> CONFIG_ATH9K_RATE_CONTROL=y
>> # CONFIG_ATH9K_HTC is not set
>>
>> server linux # cat .config | grep MAC80211
>> CONFIG_MAC80211=y
>> CONFIG_MAC80211_HAS_RC=y
>> CONFIG_MAC80211_RC_MINSTREL=y
>> CONFIG_MAC80211_RC_MINSTREL_HT=y
>> CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
>> CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
>> # CONFIG_MAC80211_MESH is not set
>> CONFIG_MAC80211_LEDS=y
>> # CONFIG_MAC80211_DEBUGFS is not set
>> # CONFIG_MAC80211_MESSAGE_TRACING is not set
>> # CONFIG_MAC80211_DEBUG_MENU is not set
>> # CONFIG_MAC80211_HWSIM is not set
>>
>>
>> I can scan for wireless networks and probably also connect to them
>> (never tested because this is not an use case for me).
>>
>> Any ideas? Thanks in advance!
>>
>> Kind regards,
>> Felix
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
^ permalink raw reply
* [PATCH 3.10 1/3] ath9k: fix aggregation stop/flush handling
From: Felix Fietkau @ 2013-05-17 9:36 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
When aggregation stop is requested, don't run the mac80211 aggregation
stop callback yet, while the session is still blocked.
Also, when aggregation flush is requested, don't run the callback at all.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 4 ++-
drivers/net/wireless/ath/ath9k/main.c | 9 +++--
drivers/net/wireless/ath/ath9k/xmit.c | 61 ++++++++++++++++++++++------------
3 files changed, 49 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 8a1888d..366002f 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -254,6 +254,7 @@ struct ath_atx_tid {
int sched;
int paused;
u8 state;
+ bool stop_cb;
};
struct ath_node {
@@ -351,7 +352,8 @@ void ath_tx_tasklet(struct ath_softc *sc);
void ath_tx_edma_tasklet(struct ath_softc *sc);
int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
u16 tid, u16 *ssn);
-void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
+bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid,
+ bool flush);
void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index a18414b..690a5d6 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1687,6 +1687,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
u16 tid, u16 *ssn, u8 buf_size)
{
struct ath_softc *sc = hw->priv;
+ bool flush = false, cb;
int ret = 0;
local_bh_disable();
@@ -1703,12 +1704,14 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ath9k_ps_restore(sc);
break;
- case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ flush = true;
+ case IEEE80211_AMPDU_TX_STOP_CONT:
ath9k_ps_wakeup(sc);
- ath_tx_aggr_stop(sc, sta, tid);
- ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ cb = ath_tx_aggr_stop(sc, sta, tid, flush);
+ if (cb)
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ath9k_ps_restore(sc);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index eab0fcb..a47bf69 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -164,7 +164,20 @@ static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
ARRAY_SIZE(bf->rates));
}
-static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
+static void ath_tx_clear_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
+{
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
+ tid->state &= ~AGGR_CLEANUP;
+ if (!tid->stop_cb)
+ return;
+
+ ieee80211_start_tx_ba_cb_irqsafe(tid->an->vif, tid->an->sta->addr,
+ tid->tidno);
+ tid->stop_cb = false;
+}
+
+static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid,
+ bool flush_packets)
{
struct ath_txq *txq = tid->ac->txq;
struct sk_buff *skb;
@@ -181,16 +194,15 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
while ((skb = __skb_dequeue(&tid->buf_q))) {
fi = get_frame_info(skb);
bf = fi->bf;
+ if (!bf && !flush_packets)
+ bf = ath_tx_setup_buffer(sc, txq, tid, skb);
if (!bf) {
- bf = ath_tx_setup_buffer(sc, txq, tid, skb);
- if (!bf) {
- ieee80211_free_txskb(sc->hw, skb);
- continue;
- }
+ ieee80211_free_txskb(sc->hw, skb);
+ continue;
}
- if (fi->retries) {
+ if (fi->retries || flush_packets) {
list_add_tail(&bf->list, &bf_head);
ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0);
@@ -201,12 +213,10 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
}
}
- if (tid->baw_head == tid->baw_tail) {
- tid->state &= ~AGGR_ADDBA_COMPLETE;
- tid->state &= ~AGGR_CLEANUP;
- }
+ if (tid->baw_head == tid->baw_tail)
+ ath_tx_clear_tid(sc, tid);
- if (sendbar) {
+ if (sendbar && !flush_packets) {
ath_txq_unlock(sc, txq);
ath_send_bar(tid, tid->seq_start);
ath_txq_lock(sc, txq);
@@ -602,7 +612,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
}
if (tid->state & AGGR_CLEANUP)
- ath_tx_flush_tid(sc, tid);
+ ath_tx_flush_tid(sc, tid, false);
rcu_read_unlock();
@@ -1256,18 +1266,23 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
return 0;
}
-void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
+bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid,
+ bool flush)
{
struct ath_node *an = (struct ath_node *)sta->drv_priv;
struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid);
struct ath_txq *txq = txtid->ac->txq;
+ bool ret = !flush;
+
+ if (flush)
+ txtid->stop_cb = false;
if (txtid->state & AGGR_CLEANUP)
- return;
+ return false;
if (!(txtid->state & AGGR_ADDBA_COMPLETE)) {
txtid->state &= ~AGGR_ADDBA_PROGRESS;
- return;
+ return ret;
}
ath_txq_lock(sc, txq);
@@ -1279,13 +1294,17 @@ void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
* TID can only be reused after all in-progress subframes have been
* completed.
*/
- if (txtid->baw_head != txtid->baw_tail)
+ if (txtid->baw_head != txtid->baw_tail) {
txtid->state |= AGGR_CLEANUP;
- else
+ ret = false;
+ txtid->stop_cb = !flush;
+ } else {
txtid->state &= ~AGGR_ADDBA_COMPLETE;
+ }
- ath_tx_flush_tid(sc, txtid);
+ ath_tx_flush_tid(sc, txtid, flush);
ath_txq_unlock_complete(sc, txq);
+ return ret;
}
void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
@@ -2415,6 +2434,7 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
tid->ac = &an->ac[acno];
tid->state &= ~AGGR_ADDBA_COMPLETE;
tid->state &= ~AGGR_ADDBA_PROGRESS;
+ tid->stop_cb = false;
}
for (acno = 0, ac = &an->ac[acno];
@@ -2451,8 +2471,7 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
}
ath_tid_drain(sc, txq, tid);
- tid->state &= ~AGGR_ADDBA_COMPLETE;
- tid->state &= ~AGGR_CLEANUP;
+ ath_tx_clear_tid(sc, tid);
ath_txq_unlock(sc, txq);
}
--
1.8.0.2
^ permalink raw reply related
* [PATCH 3.10 3/3] ath9k: fix draining aggregation tid buffers
From: Felix Fietkau @ 2013-05-17 9:36 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
In-Reply-To: <1368783383-82459-1-git-send-email-nbd@openwrt.org>
After a tx attempt, an A-MPDU subframe can still have fi->retries at 0
(if the retry count wasn't incremented due to powersave).
In that case it is still tracked as part of the block ack window, so
when draining the tid queue, its sequence number needs to be cleared
from the pending frame bitmap.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/xmit.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index ad6e0b3..14bb335 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -287,9 +287,7 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq,
list_add_tail(&bf->list, &bf_head);
- if (fi->retries)
- ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
-
+ ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0);
}
--
1.8.0.2
^ permalink raw reply related
* [PATCH 3.10 2/3] ath9k: fix rate handling/reporting
From: Felix Fietkau @ 2013-05-17 9:36 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
In-Reply-To: <1368783383-82459-1-git-send-email-nbd@openwrt.org>
This patch fixes some issues introduced in the rate control API rework.
When not running aggregation, copy bf->rates into info->control.rates
before applying the rate control status to it.
In ath_lookup_rate, the rates need to be pulled from bf->rates, not the
tx info.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/xmit.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index a47bf69..ad6e0b3 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -630,6 +630,7 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
struct ath_tx_status *ts, struct ath_buf *bf,
struct list_head *bf_head)
{
+ struct ieee80211_tx_info *info;
bool txok, flush;
txok = !(ts->ts_status & ATH9K_TXERR_MASK);
@@ -641,8 +642,12 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
txq->axq_ampdu_depth--;
if (!bf_isampdu(bf)) {
- if (!flush)
+ if (!flush) {
+ info = IEEE80211_SKB_CB(bf->bf_mpdu);
+ memcpy(info->control.rates, bf->rates,
+ sizeof(info->control.rates));
ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok);
+ }
ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok);
} else
ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok);
@@ -686,7 +691,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
skb = bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
- rates = tx_info->control.rates;
+ rates = bf->rates;
/*
* Find the lowest frame length among the rate series that will have a
--
1.8.0.2
^ permalink raw reply related
* Re: AR9227: Can't set master mode
From: Thomas Klute @ 2013-05-17 9:17 UTC (permalink / raw)
To: Felix Blanke; +Cc: linux-wireless
In-Reply-To: <CAFTPBc+jVwNnAirFCR9ZvHKCjy_AO1ce=ZpnLs3tPZUNGe75aQ@mail.gmail.com>
Am 17.05.2013 10:54, schrieb Felix Blanke:
> Hi,
>
> first: Please CC me as I'm not subscribed to the list.
>
> I have the following wireless card: 04:02.0 Network controller:
> Atheros Communications Inc. AR9227 Wireless Network Adapter (rev 01)
>
> I can't set it to master mode, but this card should support it:
>
> server ~ # iwconfig wlp4s2
> wlp4s2 IEEE 802.11bgn ESSID:off/any
> Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm
> Retry long limit:7 RTS thr:off Fragment thr:off
> Encryption key:off
> Power Management:off
>
> server ~ # iwconfig wlp4s2 mode Master
> Error for wireless request "Set Mode" (8B06) :
> SET failed on device wlp4s2 ; Invalid argument.
You cannot set any card to master mode this way, you have to use hostapd
to set up the access point interface. The documentation at
http://wireless.kernel.org/en/users/Documentation/hostapd should help. :-)
I'd also recommend using iw instead of iwconfig, see
http://wireless.kernel.org/en/users/Documentation/iw
> My kernel config should be correct:
>
> server linux # cat .config | grep ATH9K
> CONFIG_ATH9K_HW=y
> CONFIG_ATH9K_COMMON=y
> # CONFIG_ATH9K_BTCOEX_SUPPORT is not set
> CONFIG_ATH9K=y
> CONFIG_ATH9K_PCI=y
> # CONFIG_ATH9K_AHB is not set
> # CONFIG_ATH9K_DEBUGFS is not set
> CONFIG_ATH9K_RATE_CONTROL=y
> # CONFIG_ATH9K_HTC is not set
>
> server linux # cat .config | grep MAC80211
> CONFIG_MAC80211=y
> CONFIG_MAC80211_HAS_RC=y
> CONFIG_MAC80211_RC_MINSTREL=y
> CONFIG_MAC80211_RC_MINSTREL_HT=y
> CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
> CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
> # CONFIG_MAC80211_MESH is not set
> CONFIG_MAC80211_LEDS=y
> # CONFIG_MAC80211_DEBUGFS is not set
> # CONFIG_MAC80211_MESSAGE_TRACING is not set
> # CONFIG_MAC80211_DEBUG_MENU is not set
> # CONFIG_MAC80211_HWSIM is not set
>
>
> I can scan for wireless networks and probably also connect to them
> (never tested because this is not an use case for me).
>
> Any ideas? Thanks in advance!
>
> Kind regards,
> Felix
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply
* Re: [PATCHv2 00/18] Add support for 5 and 10 MHz channels
From: Simon Wunderlich @ 2013-05-17 9:58 UTC (permalink / raw)
To: Adrian Chadd
Cc: Simon Wunderlich, linux-wireless, Johannes Berg,
Mathias Kretschmer, Simon Wunderlich
In-Reply-To: <CAJ-Vmo=39cS38UCDeQrdJ7x-t=cyr8cnsf3G2opxyeY3KzWLUg@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 985 bytes --]
Hey Adrian,
On Thu, May 16, 2013 at 08:34:39AM -0700, Adrian Chadd wrote:
> How about I setup a couple of FreeBSD devices with 5/10MHz operating
> modes and dump the beacon IEs, probe request/response and assoc
> request/response?
>
> That way you can see what the rate table entries look like.
yeah, that would be cool to compare the IEs and see if this looks similar.
Maybe I can do the same for the Linux IEs too, just for reference.
We basically enable it only if 802.11a or g is supported (802.11b is not
supported), and announce OFDM only rates. The rates are divided by two or
four (for 10 and 5 MHz), and rounded up. That's pretty much the only
thing which is changed to 20 MHz.
BTW, how is HT handled for narrow channels in FreeBSD? Do you just send
HT IEs as they are in 20 MHz? Also, do you disable secondary channels?
(I would probably do that, using two adjacent 5 MHz channels should be
replaceable by one 10 MHz channel ...)
Thanks,
Simon
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
^ permalink raw reply
* [PATCH v2 3.10 1/3] ath9k: fix aggregation stop/flush handling
From: Felix Fietkau @ 2013-05-17 10:58 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
When aggregation stop is requested, don't run the mac80211 aggregation
stop callback yet, while the session is still blocked.
Also, when aggregation flush is requested, don't run the callback at all.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 4 ++-
drivers/net/wireless/ath/ath9k/main.c | 8 +++--
drivers/net/wireless/ath/ath9k/xmit.c | 61 ++++++++++++++++++++++------------
3 files changed, 48 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 8a1888d..366002f 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -254,6 +254,7 @@ struct ath_atx_tid {
int sched;
int paused;
u8 state;
+ bool stop_cb;
};
struct ath_node {
@@ -351,7 +352,8 @@ void ath_tx_tasklet(struct ath_softc *sc);
void ath_tx_edma_tasklet(struct ath_softc *sc);
int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
u16 tid, u16 *ssn);
-void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
+bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid,
+ bool flush);
void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid);
void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index a18414b..2382d12 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1687,6 +1687,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
u16 tid, u16 *ssn, u8 buf_size)
{
struct ath_softc *sc = hw->priv;
+ bool flush = false;
int ret = 0;
local_bh_disable();
@@ -1703,12 +1704,13 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ath9k_ps_restore(sc);
break;
- case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ flush = true;
+ case IEEE80211_AMPDU_TX_STOP_CONT:
ath9k_ps_wakeup(sc);
- ath_tx_aggr_stop(sc, sta, tid);
- ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ if (ath_tx_aggr_stop(sc, sta, tid, flush))
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ath9k_ps_restore(sc);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index eab0fcb..a47bf69 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -164,7 +164,20 @@ static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
ARRAY_SIZE(bf->rates));
}
-static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
+static void ath_tx_clear_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
+{
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
+ tid->state &= ~AGGR_CLEANUP;
+ if (!tid->stop_cb)
+ return;
+
+ ieee80211_start_tx_ba_cb_irqsafe(tid->an->vif, tid->an->sta->addr,
+ tid->tidno);
+ tid->stop_cb = false;
+}
+
+static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid,
+ bool flush_packets)
{
struct ath_txq *txq = tid->ac->txq;
struct sk_buff *skb;
@@ -181,16 +194,15 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
while ((skb = __skb_dequeue(&tid->buf_q))) {
fi = get_frame_info(skb);
bf = fi->bf;
+ if (!bf && !flush_packets)
+ bf = ath_tx_setup_buffer(sc, txq, tid, skb);
if (!bf) {
- bf = ath_tx_setup_buffer(sc, txq, tid, skb);
- if (!bf) {
- ieee80211_free_txskb(sc->hw, skb);
- continue;
- }
+ ieee80211_free_txskb(sc->hw, skb);
+ continue;
}
- if (fi->retries) {
+ if (fi->retries || flush_packets) {
list_add_tail(&bf->list, &bf_head);
ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0);
@@ -201,12 +213,10 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
}
}
- if (tid->baw_head == tid->baw_tail) {
- tid->state &= ~AGGR_ADDBA_COMPLETE;
- tid->state &= ~AGGR_CLEANUP;
- }
+ if (tid->baw_head == tid->baw_tail)
+ ath_tx_clear_tid(sc, tid);
- if (sendbar) {
+ if (sendbar && !flush_packets) {
ath_txq_unlock(sc, txq);
ath_send_bar(tid, tid->seq_start);
ath_txq_lock(sc, txq);
@@ -602,7 +612,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
}
if (tid->state & AGGR_CLEANUP)
- ath_tx_flush_tid(sc, tid);
+ ath_tx_flush_tid(sc, tid, false);
rcu_read_unlock();
@@ -1256,18 +1266,23 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
return 0;
}
-void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
+bool ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid,
+ bool flush)
{
struct ath_node *an = (struct ath_node *)sta->drv_priv;
struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid);
struct ath_txq *txq = txtid->ac->txq;
+ bool ret = !flush;
+
+ if (flush)
+ txtid->stop_cb = false;
if (txtid->state & AGGR_CLEANUP)
- return;
+ return false;
if (!(txtid->state & AGGR_ADDBA_COMPLETE)) {
txtid->state &= ~AGGR_ADDBA_PROGRESS;
- return;
+ return ret;
}
ath_txq_lock(sc, txq);
@@ -1279,13 +1294,17 @@ void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
* TID can only be reused after all in-progress subframes have been
* completed.
*/
- if (txtid->baw_head != txtid->baw_tail)
+ if (txtid->baw_head != txtid->baw_tail) {
txtid->state |= AGGR_CLEANUP;
- else
+ ret = false;
+ txtid->stop_cb = !flush;
+ } else {
txtid->state &= ~AGGR_ADDBA_COMPLETE;
+ }
- ath_tx_flush_tid(sc, txtid);
+ ath_tx_flush_tid(sc, txtid, flush);
ath_txq_unlock_complete(sc, txq);
+ return ret;
}
void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
@@ -2415,6 +2434,7 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
tid->ac = &an->ac[acno];
tid->state &= ~AGGR_ADDBA_COMPLETE;
tid->state &= ~AGGR_ADDBA_PROGRESS;
+ tid->stop_cb = false;
}
for (acno = 0, ac = &an->ac[acno];
@@ -2451,8 +2471,7 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
}
ath_tid_drain(sc, txq, tid);
- tid->state &= ~AGGR_ADDBA_COMPLETE;
- tid->state &= ~AGGR_CLEANUP;
+ ath_tx_clear_tid(sc, tid);
ath_txq_unlock(sc, txq);
}
--
1.8.0.2
^ permalink raw reply related
* [PATCH v2 3.10 2/3] ath9k: fix rate handling/reporting
From: Felix Fietkau @ 2013-05-17 10:58 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
In-Reply-To: <1368788306-1605-1-git-send-email-nbd@openwrt.org>
This patch fixes some issues introduced in the rate control API rework.
When not running aggregation, copy bf->rates into info->control.rates
before applying the rate control status to it.
In ath_lookup_rate, the rates need to be pulled from bf->rates, not the
tx info.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/xmit.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index a47bf69..ad6e0b3 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -630,6 +630,7 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
struct ath_tx_status *ts, struct ath_buf *bf,
struct list_head *bf_head)
{
+ struct ieee80211_tx_info *info;
bool txok, flush;
txok = !(ts->ts_status & ATH9K_TXERR_MASK);
@@ -641,8 +642,12 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
txq->axq_ampdu_depth--;
if (!bf_isampdu(bf)) {
- if (!flush)
+ if (!flush) {
+ info = IEEE80211_SKB_CB(bf->bf_mpdu);
+ memcpy(info->control.rates, bf->rates,
+ sizeof(info->control.rates));
ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok);
+ }
ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok);
} else
ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok);
@@ -686,7 +691,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
skb = bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
- rates = tx_info->control.rates;
+ rates = bf->rates;
/*
* Find the lowest frame length among the rate series that will have a
--
1.8.0.2
^ permalink raw reply related
* [PATCH v2 3.10 3/3] ath9k: fix draining aggregation tid buffers
From: Felix Fietkau @ 2013-05-17 10:58 UTC (permalink / raw)
To: linux-wireless; +Cc: linville, mcgrof
In-Reply-To: <1368788306-1605-1-git-send-email-nbd@openwrt.org>
After a tx attempt, an A-MPDU subframe can still have fi->retries at 0
(if the retry count wasn't incremented due to powersave).
In that case it is still tracked as part of the block ack window, so
when draining the tid queue, its sequence number needs to be cleared
from the pending frame bitmap.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/xmit.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index ad6e0b3..14bb335 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -287,9 +287,7 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq,
list_add_tail(&bf->list, &bf_head);
- if (fi->retries)
- ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
-
+ ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0);
}
--
1.8.0.2
^ permalink raw reply related
* [PATCH 3.10] mac80211: fix direct probe auth
From: Stanislaw Gruszka @ 2013-05-17 11:43 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless
We send direct probe to broadcast address, as some APs do not respond to
unicast PROBE frames when unassociated. Broadcast frames are not acked,
so we can not use that for trigger MLME state machine, but we need to
use old timeout mechanism.
This fixes authentication timed out like below:
[ 1024.671974] wlan6: authenticate with 54:e6:fc:98:63:fe
[ 1024.694125] wlan6: direct probe to 54:e6:fc:98:63:fe (try 1/3)
[ 1024.695450] wlan6: direct probe to 54:e6:fc:98:63:fe (try 2/3)
[ 1024.700586] wlan6: send auth to 54:e6:fc:98:63:fe (try 3/3)
[ 1024.701441] wlan6: authentication with 54:e6:fc:98:63:fe timed out
With fix, we have:
[ 4524.198978] wlan6: authenticate with 54:e6:fc:98:63:fe
[ 4524.220692] wlan6: direct probe to 54:e6:fc:98:63:fe (try 1/3)
[ 4524.421784] wlan6: send auth to 54:e6:fc:98:63:fe (try 2/3)
[ 4524.423272] wlan6: authenticated
[ 4524.423811] wlan6: associate with 54:e6:fc:98:63:fe (try 1/3)
[ 4524.427492] wlan6: RX AssocResp from 54:e6:fc:98:63:fe (capab=0x431 status=0 aid=1)
Cc: stable@vger.kernel.org # 3.9
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
net/mac80211/mlme.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 346ad4c..0a60f40 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3182,10 +3182,6 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
if (WARN_ON_ONCE(!auth_data))
return -EINVAL;
- if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
- tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
- IEEE80211_TX_INTFL_MLME_CONN_TX;
-
auth_data->tries++;
if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
@@ -3219,6 +3215,10 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
auth_data->expected_transaction = trans;
}
+ if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+ tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_INTFL_MLME_CONN_TX;
+
ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
auth_data->data, auth_data->data_len,
auth_data->bss->bssid,
@@ -3242,12 +3242,12 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
* will not answer to direct packet in unassociated state.
*/
ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
- NULL, 0, (u32) -1, true, tx_flags,
+ NULL, 0, (u32) -1, true, 0,
auth_data->bss->channel, false);
rcu_read_unlock();
}
- if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+ if (tx_flags == 0) {
auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
ifmgd->auth_data->timeout_started = true;
run_again(ifmgd, auth_data->timeout);
--
1.7.4.4
^ permalink raw reply related
* Re: [PATCH 3.10] mac80211: fix direct probe auth
From: Johannes Berg @ 2013-05-17 12:01 UTC (permalink / raw)
To: Stanislaw Gruszka; +Cc: linux-wireless
In-Reply-To: <20130517114303.GB1641@redhat.com>
On Fri, 2013-05-17 at 13:43 +0200, Stanislaw Gruszka wrote:
> We send direct probe to broadcast address, as some APs do not respond to
> unicast PROBE frames when unassociated. Broadcast frames are not acked,
> so we can not use that for trigger MLME state machine, but we need to
> use old timeout mechanism.
Makes sense, applied.
johannes
^ permalink raw reply
* Re: very bad work of wl (bcm 43228)
From: Vasiliy Tolstov @ 2013-05-17 13:30 UTC (permalink / raw)
To: Arend van Spriel
Cc: Larry Finger, Julian Calaby, linux-wireless, brcm80211-dev-list,
Rafał Miłecki
In-Reply-To: <5188B732.3010403@broadcom.com>
2013/5/7 Arend van Spriel <arend@broadcom.com>:
> Actually, there is: linux-wlan-client-support-list@broadcom.com
>
> It can be found on the web page [1].
>
> Regards,
> Arend
>
> [1] http://www.broadcom.com/support/802.11/linux_sta.php
This email is dead. Nobody respond to me. May be exists another email list?
--
Vasiliy Tolstov,
e-mail: v.tolstov@selfip.ru
jabber: vase@selfip.ru
^ permalink raw reply
* Re: very bad work of wl (bcm 43228)
From: Arend van Spriel @ 2013-05-17 14:18 UTC (permalink / raw)
To: Vasiliy Tolstov
Cc: Larry Finger, Julian Calaby, linux-wireless, brcm80211-dev-list,
Rafał Miłecki
In-Reply-To: <CACaajQtc7svPFAosDMYzW0gS8g_CPsRb9JwC1D9VUxhCFdfSSQ@mail.gmail.com>
On 05/17/2013 03:30 PM, Vasiliy Tolstov wrote:
> 2013/5/7 Arend van Spriel <arend@broadcom.com>:
>> Actually, there is: linux-wlan-client-support-list@broadcom.com
>>
>> It can be found on the web page [1].
>>
>> Regards,
>> Arend
>>
>> [1] http://www.broadcom.com/support/802.11/linux_sta.php
>
>
> This email is dead. Nobody respond to me. May be exists another email list?
There should be someone on the receiving end. I did an internal query
with the info you provided so far.
Regards,
Arend
^ permalink raw reply
* [RFC 0/2] cfg80211: SME refactoring
From: Johannes Berg @ 2013-05-17 14:25 UTC (permalink / raw)
To: linux-wireless
After the cleanups, this is really what I was after, separating
the cfg80211 internal software SME from the SME event processing
that is needed for all three SMEs (userspace, cfg80211, driver.)
I have only lightly tested it so far, any help would be welcome :-)
johannes
^ permalink raw reply
* [RFC 1/2] cfg80211/mac80211: clean up cfg80211 SME APIs
From: Johannes Berg @ 2013-05-17 14:25 UTC (permalink / raw)
To: linux-wireless; +Cc: Johannes Berg
In-Reply-To: <1368800743-29877-1-git-send-email-johannes@sipsolutions.net>
From: Johannes Berg <johannes.berg@intel.com>
Do some cleanups in the cfg80211 SME APIs, which are
only used by mac80211.
Most of these functions get a frame passed, and there
isn't really any reason to export multiple functions
as cfg80211 can check the frame type instead, do that.
Additionally, the API functions have confusing names
like cfg80211_send_...() which was meant to indicate
that it sends an event to userspace, but gets a bit
confusing when there's both TX and RX and they're not
all clearly labeled.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/net/cfg80211.h | 91 ++++++++++++++++++++------------------------------
net/mac80211/mlme.c | 44 ++++++++++++------------
net/mac80211/rx.c | 26 ++++++---------
net/wireless/mlme.c | 86 +++++++++++++++++++++++++++++------------------
net/wireless/nl80211.c | 30 ++++++++---------
net/wireless/trace.h | 46 ++++++++++++++++++-------
6 files changed, 170 insertions(+), 153 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 8433090..51cf186 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3418,59 +3418,66 @@ void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
/**
- * cfg80211_send_rx_auth - notification of processed authentication
+ * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame
* @dev: network device
* @buf: authentication frame (header + body)
* @len: length of the frame data
*
- * This function is called whenever an authentication has been processed in
- * station mode. The driver is required to call either this function or
- * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth()
- * call. This function may sleep. The caller must hold the corresponding wdev's
- * mutex.
+ * This function is called whenever an authentication, disassociation or
+ * deauthentication frame has been received and processed in station mode.
+ * After being asked to authenticate via cfg80211_ops::auth() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ * After being asked to associate via cfg80211_ops::assoc() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ * While connected, the driver must calls this for received and processed
+ * disassociation and deauthentication frames. If the frame couldn't be used
+ * because it was unprotected, the driver must call the function
+ * cfg80211_rx_unprot_mlme_mgmt() instead.
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
-void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
+void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
/**
- * cfg80211_send_auth_timeout - notification of timed out authentication
+ * cfg80211_auth_timeout - notification of timed out authentication
* @dev: network device
* @addr: The MAC address of the device with which the authentication timed out
*
* This function may sleep. The caller must hold the corresponding wdev's
* mutex.
*/
-void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
+void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr);
/**
- * cfg80211_send_rx_assoc - notification of processed association
+ * cfg80211_rx_assoc_resp - notification of processed association response
* @dev: network device
- * @bss: the BSS struct association was requested for, the struct reference
- * is owned by cfg80211 after this call
- * @buf: (re)association response frame (header + body)
+ * @bss: the BSS that association was requested with, ownership of the pointer
+ * moves to cfg80211 in this call
+ * @buf: authentication frame (header + body)
* @len: length of the frame data
*
- * This function is called whenever a (re)association response has been
- * processed in station mode. The driver is required to call either this
- * function or cfg80211_send_assoc_timeout() to indicate the result of
- * cfg80211_ops::assoc() call. This function may sleep. The caller must hold
- * the corresponding wdev's mutex.
+ * After being asked to associate via cfg80211_ops::assoc() the driver must
+ * call either this function or cfg80211_auth_timeout().
+ *
+ * This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
-void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
+void cfg80211_rx_assoc_resp(struct net_device *dev,
+ struct cfg80211_bss *bss,
const u8 *buf, size_t len);
/**
- * cfg80211_send_assoc_timeout - notification of timed out association
+ * cfg80211_assoc_timeout - notification of timed out association
* @dev: network device
* @addr: The MAC address of the device with which the association timed out
*
* This function may sleep. The caller must hold the corresponding wdev's mutex.
*/
-void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
+void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr);
/**
- * cfg80211_send_deauth - notification of processed deauthentication
+ * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame
* @dev: network device
- * @buf: deauthentication frame (header + body)
+ * @buf: 802.11 frame (header + body)
* @len: length of the frame data
*
* This function is called whenever deauthentication has been processed in
@@ -3478,46 +3485,20 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
* locally generated ones. This function may sleep. The caller must hold the
* corresponding wdev's mutex.
*/
-void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
+void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len);
/**
- * cfg80211_send_disassoc - notification of processed disassociation
- * @dev: network device
- * @buf: disassociation response frame (header + body)
- * @len: length of the frame data
- *
- * This function is called whenever disassociation has been processed in
- * station mode. This includes both received disassociation frames and locally
- * generated ones. This function may sleep. The caller must hold the
- * corresponding wdev's mutex.
- */
-void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);
-
-/**
- * cfg80211_send_unprot_deauth - notification of unprotected deauthentication
+ * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
*
- * This function is called whenever a received Deauthentication frame has been
- * dropped in station mode because of MFP being used but the Deauthentication
- * frame was not protected. This function may sleep.
- */
-void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
- size_t len);
-
-/**
- * cfg80211_send_unprot_disassoc - notification of unprotected disassociation
- * @dev: network device
- * @buf: disassociation frame (header + body)
- * @len: length of the frame data
- *
- * This function is called whenever a received Disassociation frame has been
- * dropped in station mode because of MFP being used but the Disassociation
+ * This function is called whenever a received deauthentication or dissassoc
+ * frame has been dropped in station mode because of MFP being used but the
* frame was not protected. This function may sleep.
*/
-void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
- size_t len);
+void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev,
+ const u8 *buf, size_t len);
/**
* cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 0963aa9..49dc6c7 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2151,7 +2151,8 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_CSA);
- cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
sdata_unlock(sdata);
}
@@ -2298,7 +2299,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
sdata_info(sdata, "%pM denied authentication (status %d)\n",
mgmt->sa, status_code);
ieee80211_destroy_auth_data(sdata, false);
- cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len);
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
return;
}
@@ -2333,7 +2334,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
* Report auth frame to user space for processing since another
* round of Authentication frames is still needed.
*/
- cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len);
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
return;
}
@@ -2350,7 +2351,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&sdata->local->sta_mtx);
- cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len);
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
return;
out_err:
mutex_unlock(&sdata->local->sta_mtx);
@@ -2383,7 +2384,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
- cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, len);
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
}
@@ -2409,7 +2410,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
- cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, len);
+ cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
}
static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
@@ -2707,7 +2708,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
/* oops -- internal error -- send timeout for now */
ieee80211_destroy_assoc_data(sdata, false);
cfg80211_put_bss(sdata->local->hw.wiphy, bss);
- cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid);
+ cfg80211_assoc_timeout(sdata->dev, mgmt->bssid);
return;
}
sdata_info(sdata, "associated\n");
@@ -2720,7 +2721,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
ieee80211_destroy_assoc_data(sdata, true);
}
- cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, len);
+ cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
}
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
@@ -3113,8 +3114,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
WLAN_REASON_DEAUTH_LEAVING,
true, deauth_buf);
- cfg80211_send_deauth(sdata->dev, deauth_buf,
- sizeof(deauth_buf));
+ cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
+ sizeof(deauth_buf));
return;
}
@@ -3232,7 +3233,8 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
tx, frame_buf);
- cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
}
static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
@@ -3423,7 +3425,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
ieee80211_destroy_auth_data(sdata, false);
- cfg80211_send_auth_timeout(sdata->dev, bssid);
+ cfg80211_auth_timeout(sdata->dev, bssid);
}
} else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
run_again(sdata, ifmgd->auth_data->timeout);
@@ -3439,7 +3441,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
ieee80211_destroy_assoc_data(sdata, false);
- cfg80211_send_assoc_timeout(sdata->dev, bssid);
+ cfg80211_assoc_timeout(sdata->dev, bssid);
}
} else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
run_again(sdata, ifmgd->assoc_data->timeout);
@@ -3988,8 +3990,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
WLAN_REASON_UNSPECIFIED,
false, frame_buf);
- cfg80211_send_deauth(sdata->dev, frame_buf,
- sizeof(frame_buf));
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ sizeof(frame_buf));
}
sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
@@ -4051,8 +4053,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
WLAN_REASON_UNSPECIFIED,
false, frame_buf);
- cfg80211_send_deauth(sdata->dev, frame_buf,
- sizeof(frame_buf));
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ sizeof(frame_buf));
}
if (ifmgd->auth_data && !ifmgd->auth_data->done) {
@@ -4305,8 +4307,8 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
out:
if (report_frame)
- cfg80211_send_deauth(sdata->dev, frame_buf,
- IEEE80211_DEAUTH_FRAME_LEN);
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
return 0;
}
@@ -4336,8 +4338,8 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
req->reason_code, !req->local_state_change,
frame_buf);
- cfg80211_send_disassoc(sdata->dev, frame_buf,
- IEEE80211_DEAUTH_FRAME_LEN);
+ cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
return 0;
}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 3194172..7a72fd2 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1743,27 +1743,21 @@ static int ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
if (unlikely(!ieee80211_has_protected(fc) &&
ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
rx->key)) {
- if (ieee80211_is_deauth(fc))
- cfg80211_send_unprot_deauth(rx->sdata->dev,
- rx->skb->data,
- rx->skb->len);
- else if (ieee80211_is_disassoc(fc))
- cfg80211_send_unprot_disassoc(rx->sdata->dev,
- rx->skb->data,
- rx->skb->len);
+ if (ieee80211_is_deauth(fc) ||
+ ieee80211_is_disassoc(fc))
+ cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
return -EACCES;
}
/* BIP does not use Protected field, so need to check MMIE */
if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) &&
ieee80211_get_mmie_keyidx(rx->skb) < 0)) {
- if (ieee80211_is_deauth(fc))
- cfg80211_send_unprot_deauth(rx->sdata->dev,
- rx->skb->data,
- rx->skb->len);
- else if (ieee80211_is_disassoc(fc))
- cfg80211_send_unprot_disassoc(rx->sdata->dev,
- rx->skb->data,
- rx->skb->len);
+ if (ieee80211_is_deauth(fc) ||
+ ieee80211_is_disassoc(fc))
+ cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
return -EACCES;
}
/*
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 7bde5d9..4b9c2be 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -18,20 +18,7 @@
#include "rdev-ops.h"
-void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
-{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-
- trace_cfg80211_send_rx_auth(dev);
-
- nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
- cfg80211_sme_rx_auth(dev, buf, len);
-}
-EXPORT_SYMBOL(cfg80211_send_rx_auth);
-
-void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
+void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
const u8 *buf, size_t len)
{
u16 status_code;
@@ -84,10 +71,10 @@ void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
status_code,
status_code == WLAN_STATUS_SUCCESS, bss);
}
-EXPORT_SYMBOL(cfg80211_send_rx_assoc);
+EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
-void cfg80211_send_deauth(struct net_device *dev,
- const u8 *buf, size_t len)
+static void cfg80211_process_deauth(struct net_device *dev,
+ const u8 *buf, size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
@@ -96,9 +83,6 @@ void cfg80211_send_deauth(struct net_device *dev,
const u8 *bssid = mgmt->bssid;
bool was_current = false;
- trace_cfg80211_send_deauth(dev);
- ASSERT_WDEV_LOCK(wdev);
-
if (wdev->current_bss &&
ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
cfg80211_unhold_bss(wdev->current_bss);
@@ -123,10 +107,9 @@ void cfg80211_send_deauth(struct net_device *dev,
false, NULL);
}
}
-EXPORT_SYMBOL(cfg80211_send_deauth);
-void cfg80211_send_disassoc(struct net_device *dev,
- const u8 *buf, size_t len)
+static void cfg80211_process_disassoc(struct net_device *dev,
+ const u8 *buf, size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
@@ -136,9 +119,6 @@ void cfg80211_send_disassoc(struct net_device *dev,
u16 reason_code;
bool from_ap;
- trace_cfg80211_send_disassoc(dev);
- ASSERT_WDEV_LOCK(wdev);
-
nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
if (wdev->sme_state != CFG80211_SME_CONNECTED)
@@ -153,15 +133,38 @@ void cfg80211_send_disassoc(struct net_device *dev,
} else
WARN_ON(1);
-
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
}
-EXPORT_SYMBOL(cfg80211_send_disassoc);
-void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
+void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ struct ieee80211_mgmt *mgmt = (void *)buf;
+
+ ASSERT_WDEV_LOCK(wdev);
+
+ trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
+
+ if (WARN_ON(len < 2))
+ return;
+
+ if (ieee80211_is_auth(mgmt->frame_control)) {
+ nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
+ cfg80211_sme_rx_auth(dev, buf, len);
+ } else if (ieee80211_is_deauth(mgmt->frame_control)) {
+ cfg80211_process_deauth(dev, buf, len);
+ } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
+ cfg80211_process_disassoc(dev, buf, len);
+ }
+}
+EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
+
+void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
@@ -175,9 +178,9 @@ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
WLAN_STATUS_UNSPECIFIED_FAILURE,
false, NULL);
}
-EXPORT_SYMBOL(cfg80211_send_auth_timeout);
+EXPORT_SYMBOL(cfg80211_auth_timeout);
-void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
+void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
@@ -191,7 +194,26 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
WLAN_STATUS_UNSPECIFIED_FAILURE,
false, NULL);
}
-EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
+EXPORT_SYMBOL(cfg80211_assoc_timeout);
+
+void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct ieee80211_mgmt *mgmt = (void *)buf;
+
+ ASSERT_WDEV_LOCK(wdev);
+
+ trace_cfg80211_tx_mlme_mgmt(dev, buf, len);
+
+ if (WARN_ON(len < 2))
+ return;
+
+ if (ieee80211_is_deauth(mgmt->frame_control))
+ cfg80211_process_deauth(dev, buf, len);
+ else
+ cfg80211_process_disassoc(dev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 57ba1a6..a42cc84 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9295,31 +9295,27 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
NL80211_CMD_DISASSOCIATE, gfp);
}
-void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
- size_t len)
+void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
+ size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ const struct ieee80211_mgmt *mgmt = (void *)buf;
+ u32 cmd;
- trace_cfg80211_send_unprot_deauth(dev);
- nl80211_send_mlme_event(rdev, dev, buf, len,
- NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
-}
-EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
+ if (WARN_ON(len < 2))
+ return;
-void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
- size_t len)
-{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ if (ieee80211_is_deauth(mgmt->frame_control))
+ cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
+ else
+ cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
- trace_cfg80211_send_unprot_disassoc(dev);
- nl80211_send_mlme_event(rdev, dev, buf, len,
- NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
+ trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
+ nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
}
-EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
+EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int cmd,
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 23fafea..e1534baf 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1911,24 +1911,46 @@ TRACE_EVENT(cfg80211_send_rx_assoc,
NETDEV_PR_ARG, MAC_PR_ARG(bssid), CHAN_PR_ARG)
);
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_deauth,
- TP_PROTO(struct net_device *netdev),
- TP_ARGS(netdev)
+DECLARE_EVENT_CLASS(netdev_frame_event,
+ TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+ TP_ARGS(netdev, buf, len),
+ TP_STRUCT__entry(
+ NETDEV_ENTRY
+ __dynamic_array(u8, frame, len)
+ ),
+ TP_fast_assign(
+ NETDEV_ASSIGN;
+ memcpy(__get_dynamic_array(frame), buf, len);
+ ),
+ TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x",
+ NETDEV_PR_ARG,
+ le16_to_cpup((__le16 *)__get_dynamic_array(frame)))
);
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_disassoc,
- TP_PROTO(struct net_device *netdev),
- TP_ARGS(netdev)
+DEFINE_EVENT(netdev_frame_event, cfg80211_rx_unprot_mlme_mgmt,
+ TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+ TP_ARGS(netdev, buf, len)
);
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_deauth,
- TP_PROTO(struct net_device *netdev),
- TP_ARGS(netdev)
+DEFINE_EVENT(netdev_frame_event, cfg80211_rx_mlme_mgmt,
+ TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+ TP_ARGS(netdev, buf, len)
);
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_disassoc,
- TP_PROTO(struct net_device *netdev),
- TP_ARGS(netdev)
+TRACE_EVENT(cfg80211_tx_mlme_mgmt,
+ TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+ TP_ARGS(netdev, buf, len),
+ TP_STRUCT__entry(
+ NETDEV_ENTRY
+ __dynamic_array(u8, frame, len)
+ ),
+ TP_fast_assign(
+ NETDEV_ASSIGN;
+ memcpy(__get_dynamic_array(frame), buf, len);
+ ),
+ TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x",
+ NETDEV_PR_ARG,
+ le16_to_cpup((__le16 *)__get_dynamic_array(frame)))
);
DECLARE_EVENT_CLASS(netdev_mac_evt,
--
1.8.0
^ permalink raw reply related
* [RFC 2/2] cfg80211: separate internal SME implementation
From: Johannes Berg @ 2013-05-17 14:25 UTC (permalink / raw)
To: linux-wireless; +Cc: Johannes Berg
In-Reply-To: <1368800743-29877-1-git-send-email-johannes@sipsolutions.net>
From: Johannes Berg <johannes.berg@intel.com>
The current internal SME implementation in cfg80211 is
very mixed up with the MLME handling, which has been
causing issues for a long time. There are three things
that the implementation has to provide:
* a basic SME implementation for nl80211's connect()
call (for drivers implementing auth/assoc, which is
really just mac80211) and wireless extensions
* MLME events for the userspace SME
* SME events (connected, disconnected etc.) for all
different SME implementation possibilities (driver,
cfg80211 and userspace)
To achieve these goals it isn't necessary to track the
software SME's connection status outside of it's state
(which is the part that caused many issues.) Instead,
track it only in the SME data (wdev->conn) and in the
general case only track whether the wdev is connected
or not (via wdev->current_bss.)
Also separate the internal implementation to not have
callbacks from the SME events, but rather call it from
the API functions that the driver (or rather mac80211)
calls. This separates the code better.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/net/cfg80211.h | 5 -
net/wireless/core.c | 1 -
net/wireless/core.h | 30 +--
net/wireless/ibss.c | 6 -
net/wireless/mlme.c | 191 ++++++-----------
net/wireless/nl80211.c | 5 +-
net/wireless/sme.c | 542 +++++++++++++++++++++++-------------------------
net/wireless/wext-sme.c | 8 +-
8 files changed, 335 insertions(+), 453 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 51cf186..747082c 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2893,11 +2893,6 @@ struct wireless_dev {
/* currently used for IBSS and SME - might be rearranged later */
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, mesh_id_len, mesh_id_up_len;
- enum {
- CFG80211_SME_IDLE,
- CFG80211_SME_CONNECTING,
- CFG80211_SME_CONNECTED,
- } sme_state;
struct cfg80211_conn *conn;
struct cfg80211_cached_keys *connect_keys;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index ee42287..b929cd5 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -815,7 +815,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
pr_err("failed to add phy80211 symlink to netdev!\n");
}
wdev->netdev = dev;
- wdev->sme_state = CFG80211_SME_IDLE;
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.default_key = -1;
wdev->wext.default_mgmt_key = -1;
diff --git a/net/wireless/core.h b/net/wireless/core.h
index b4b4a56..4d040cb 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -307,11 +307,6 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
bool local_state_change);
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
struct net_device *dev);
-void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
- const u8 *req_ie, size_t req_ie_len,
- const u8 *resp_ie, size_t resp_ie_len,
- u16 status, bool wextev,
- struct cfg80211_bss *bss);
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
u16 frame_type, const u8 *match_data,
int match_len);
@@ -327,12 +322,19 @@ void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
const struct ieee80211_vht_cap *vht_capa_mask);
-/* SME */
+/* SME events */
int cfg80211_connect(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_connect_params *connect,
struct cfg80211_cached_keys *connkeys,
const u8 *prev_bssid);
+void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+ const u8 *req_ie, size_t req_ie_len,
+ const u8 *resp_ie, size_t resp_ie_len,
+ u16 status, bool wextev,
+ struct cfg80211_bss *bss);
+void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
+ size_t ie_len, u16 reason, bool from_ap);
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
struct net_device *dev, u16 reason,
bool wextev);
@@ -343,21 +345,21 @@ void __cfg80211_roamed(struct wireless_dev *wdev,
int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev);
+/* SME implementation */
void cfg80211_conn_work(struct work_struct *work);
-void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
-bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
+void cfg80211_sme_scan_done(struct net_device *dev);
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
+void cfg80211_sme_disassoc(struct wireless_dev *wdev);
+void cfg80211_sme_deauth(struct wireless_dev *wdev);
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
/* internal helpers */
bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
struct key_params *params, int key_idx,
bool pairwise, const u8 *mac_addr);
-void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
- size_t ie_len, u16 reason, bool from_ap);
-void cfg80211_sme_scan_done(struct net_device *dev);
-void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
-void cfg80211_sme_disassoc(struct net_device *dev,
- struct cfg80211_internal_bss *bss);
void __cfg80211_scan_done(struct work_struct *wk);
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
void __cfg80211_sched_scan_results(struct work_struct *wk);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 5449c5a..39bff7d 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -43,7 +43,6 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid)
cfg80211_hold_bss(bss_from_pub(bss));
wdev->current_bss = bss_from_pub(bss);
- wdev->sme_state = CFG80211_SME_CONNECTED;
cfg80211_upload_connect_keys(wdev);
nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid,
@@ -64,8 +63,6 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp)
trace_cfg80211_ibss_joined(dev, bssid);
- CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
-
ev = kzalloc(sizeof(*ev), gfp);
if (!ev)
return;
@@ -120,7 +117,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.ibss.chandef = params->chandef;
#endif
- wdev->sme_state = CFG80211_SME_CONNECTING;
err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan,
params->channel_fixed
@@ -134,7 +130,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
err = rdev_join_ibss(rdev, dev, params);
if (err) {
wdev->connect_keys = NULL;
- wdev->sme_state = CFG80211_SME_IDLE;
return err;
}
@@ -186,7 +181,6 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
}
wdev->current_bss = NULL;
- wdev->sme_state = CFG80211_SME_IDLE;
wdev->ssid_len = 0;
#ifdef CONFIG_CFG80211_WEXT
if (!nowext)
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 4b9c2be..663cbdd 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -21,129 +21,85 @@
void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
const u8 *buf, size_t len)
{
- u16 status_code;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
u8 *ie = mgmt->u.assoc_resp.variable;
int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
+ u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
trace_cfg80211_send_rx_assoc(dev, bss);
- status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
-
/*
* This is a bit of a hack, we don't notify userspace of
* a (re-)association reply if we tried to send a reassoc
* and got a reject -- we only try again with an assoc
* frame instead of reassoc.
*/
- if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
- cfg80211_sme_failed_reassoc(wdev)) {
+ if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) {
cfg80211_put_bss(wiphy, bss);
return;
}
nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
-
- if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) {
- cfg80211_sme_failed_assoc(wdev);
- /*
- * do not call connect_result() now because the
- * sme will schedule work that does it later.
- */
- cfg80211_put_bss(wiphy, bss);
- return;
- }
-
- if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
- /*
- * This is for the userspace SME, the CONNECTING
- * state will be changed to CONNECTED by
- * __cfg80211_connect_result() below.
- */
- wdev->sme_state = CFG80211_SME_CONNECTING;
- }
-
- /* this consumes the bss reference */
+ /* update current_bss etc., consumes the bss reference */
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
status_code,
status_code == WLAN_STATUS_SUCCESS, bss);
}
EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
-static void cfg80211_process_deauth(struct net_device *dev,
+static void cfg80211_process_auth(struct wireless_dev *wdev,
+ const u8 *buf, size_t len)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+ nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+ cfg80211_sme_rx_auth(wdev, buf, len);
+}
+
+static void cfg80211_process_deauth(struct wireless_dev *wdev,
const u8 *buf, size_t len)
{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
const u8 *bssid = mgmt->bssid;
- bool was_current = false;
-
- if (wdev->current_bss &&
- ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
- cfg80211_unhold_bss(wdev->current_bss);
- cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
- wdev->current_bss = NULL;
- was_current = true;
- }
-
- nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
+ u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+ bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
- if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) {
- u16 reason_code;
- bool from_ap;
+ nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
- reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+ if (!wdev->current_bss ||
+ !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
+ return;
- from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
- __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
- } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
- __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- false, NULL);
- }
+ __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+ cfg80211_sme_deauth(wdev);
}
-static void cfg80211_process_disassoc(struct net_device *dev,
+static void cfg80211_process_disassoc(struct wireless_dev *wdev,
const u8 *buf, size_t len)
{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
const u8 *bssid = mgmt->bssid;
- u16 reason_code;
- bool from_ap;
+ u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+ bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
- nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
+ nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL);
- if (wdev->sme_state != CFG80211_SME_CONNECTED)
+ if (WARN_ON(!wdev->current_bss ||
+ !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
return;
- if (wdev->current_bss &&
- ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
- cfg80211_sme_disassoc(dev, wdev->current_bss);
- cfg80211_unhold_bss(wdev->current_bss);
- cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
- wdev->current_bss = NULL;
- } else
- WARN_ON(1);
-
- reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
-
- from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
- __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
+ __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+ cfg80211_sme_disassoc(wdev);
}
void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
struct ieee80211_mgmt *mgmt = (void *)buf;
ASSERT_WDEV_LOCK(wdev);
@@ -153,14 +109,12 @@ void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
if (WARN_ON(len < 2))
return;
- if (ieee80211_is_auth(mgmt->frame_control)) {
- nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
- cfg80211_sme_rx_auth(dev, buf, len);
- } else if (ieee80211_is_deauth(mgmt->frame_control)) {
- cfg80211_process_deauth(dev, buf, len);
- } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
- cfg80211_process_disassoc(dev, buf, len);
- }
+ if (ieee80211_is_auth(mgmt->frame_control))
+ cfg80211_process_auth(wdev, buf, len);
+ else if (ieee80211_is_deauth(mgmt->frame_control))
+ cfg80211_process_deauth(wdev, buf, len);
+ else if (ieee80211_is_disassoc(mgmt->frame_control))
+ cfg80211_process_disassoc(wdev, buf, len);
}
EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
@@ -173,10 +127,7 @@ void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
trace_cfg80211_send_auth_timeout(dev, addr);
nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
- if (wdev->sme_state == CFG80211_SME_CONNECTING)
- __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- false, NULL);
+ cfg80211_sme_auth_timeout(wdev);
}
EXPORT_SYMBOL(cfg80211_auth_timeout);
@@ -189,10 +140,7 @@ void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr)
trace_cfg80211_send_assoc_timeout(dev, addr);
nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
- if (wdev->sme_state == CFG80211_SME_CONNECTING)
- __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- false, NULL);
+ cfg80211_sme_assoc_timeout(wdev);
}
EXPORT_SYMBOL(cfg80211_assoc_timeout);
@@ -209,9 +157,9 @@ void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
return;
if (ieee80211_is_deauth(mgmt->frame_control))
- cfg80211_process_deauth(dev, buf, len);
+ cfg80211_process_deauth(wdev, buf, len);
else
- cfg80211_process_disassoc(dev, buf, len);
+ cfg80211_process_disassoc(wdev, buf, len);
}
EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
@@ -336,21 +284,12 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
- bool was_connected = false;
ASSERT_WDEV_LOCK(wdev);
- if (wdev->current_bss && req->prev_bssid &&
- ether_addr_equal(wdev->current_bss->pub.bssid, req->prev_bssid)) {
- /*
- * Trying to reassociate: Allow this to proceed and let the old
- * association to be dropped when the new one is completed.
- */
- if (wdev->sme_state == CFG80211_SME_CONNECTED) {
- was_connected = true;
- wdev->sme_state = CFG80211_SME_CONNECTING;
- }
- } else if (wdev->current_bss)
+ if (wdev->current_bss &&
+ (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid,
+ req->prev_bssid)))
return -EALREADY;
cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
@@ -360,11 +299,8 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
- if (!req->bss) {
- if (was_connected)
- wdev->sme_state = CFG80211_SME_CONNECTED;
+ if (!req->bss)
return -ENOENT;
- }
err = cfg80211_can_use_chan(rdev, wdev, chan, CHAN_MODE_SHARED);
if (err)
@@ -373,11 +309,8 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
err = rdev_assoc(rdev, dev, req);
out:
- if (err) {
- if (was_connected)
- wdev->sme_state = CFG80211_SME_CONNECTED;
+ if (err)
cfg80211_put_bss(&rdev->wiphy, req->bss);
- }
return err;
}
@@ -398,8 +331,9 @@ int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
ASSERT_WDEV_LOCK(wdev);
- if (local_state_change && (!wdev->current_bss ||
- !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+ if (local_state_change &&
+ (!wdev->current_bss ||
+ !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
return 0;
return rdev_deauth(rdev, dev, &req);
@@ -417,13 +351,11 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
.ie = ie,
.ie_len = ie_len,
};
+ int err;
ASSERT_WDEV_LOCK(wdev);
- if (wdev->sme_state != CFG80211_SME_CONNECTED)
- return -ENOTCONN;
-
- if (WARN(!wdev->current_bss, "sme_state=%d\n", wdev->sme_state))
+ if (!wdev->current_bss)
return -ENOTCONN;
if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
@@ -431,7 +363,13 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
else
return -ENOTCONN;
- return rdev_disassoc(rdev, dev, &req);
+ err = rdev_disassoc(rdev, dev, &req);
+ if (err)
+ return err;
+
+ /* driver should have reported the disassoc */
+ WARN_ON(wdev->current_bss);
+ return 0;
}
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
@@ -439,10 +377,6 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
u8 bssid[ETH_ALEN];
- struct cfg80211_deauth_request req = {
- .reason_code = WLAN_REASON_DEAUTH_LEAVING,
- .bssid = bssid,
- };
ASSERT_WDEV_LOCK(wdev);
@@ -453,13 +387,8 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
return;
memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
- rdev_deauth(rdev, dev, &req);
-
- if (wdev->current_bss) {
- cfg80211_unhold_bss(wdev->current_bss);
- cfg80211_put_bss(&rdev->wiphy, &wdev->current_bss->pub);
- wdev->current_bss = NULL;
- }
+ cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
+ WLAN_REASON_DEAUTH_LEAVING, false);
}
struct cfg80211_mgmt_registration {
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a42cc84..ce4d498 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -799,12 +799,9 @@ static int nl80211_key_allowed(struct wireless_dev *wdev)
case NL80211_IFTYPE_MESH_POINT:
break;
case NL80211_IFTYPE_ADHOC:
- if (!wdev->current_bss)
- return -ENOLINK;
- break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
- if (wdev->sme_state != CFG80211_SME_CONNECTED)
+ if (!wdev->current_bss)
return -ENOLINK;
break;
default:
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index a3dba36..69526c3 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -1,5 +1,7 @@
/*
- * SME code for cfg80211's connect emulation.
+ * SME code for cfg80211
+ * both driver SME event handling and the SME implementation
+ * (for nl80211's connect() and wext)
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2009 Intel Corporation. All rights reserved.
@@ -18,18 +20,24 @@
#include "reg.h"
#include "rdev-ops.h"
+/*
+ * Software SME in cfg80211, using auth/assoc/deauth calls to the
+ * driver. This is is for implementing nl80211's connect/disconnect
+ * and wireless extensions (if configured.)
+ */
+
struct cfg80211_conn {
struct cfg80211_connect_params params;
/* these are sub-states of the _CONNECTING sme_state */
enum {
- CFG80211_CONN_IDLE,
CFG80211_CONN_SCANNING,
CFG80211_CONN_SCAN_AGAIN,
CFG80211_CONN_AUTHENTICATE_NEXT,
CFG80211_CONN_AUTHENTICATING,
CFG80211_CONN_ASSOCIATE_NEXT,
CFG80211_CONN_ASSOCIATING,
- CFG80211_CONN_DEAUTH_ASSOC_FAIL,
+ CFG80211_CONN_DEAUTH,
+ CFG80211_CONN_CONNECTED,
} state;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 *ie;
@@ -37,39 +45,16 @@ struct cfg80211_conn {
bool auto_auth, prev_bssid_valid;
};
-static bool cfg80211_is_all_idle(void)
+static void cfg80211_sme_free(struct wireless_dev *wdev)
{
- struct cfg80211_registered_device *rdev;
- struct wireless_dev *wdev;
- bool is_all_idle = true;
-
- /*
- * All devices must be idle as otherwise if you are actively
- * scanning some new beacon hints could be learned and would
- * count as new regulatory hints.
- */
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
- list_for_each_entry(wdev, &rdev->wdev_list, list) {
- wdev_lock(wdev);
- if (wdev->sme_state != CFG80211_SME_IDLE)
- is_all_idle = false;
- wdev_unlock(wdev);
- }
- }
-
- return is_all_idle;
-}
+ if (!wdev->conn)
+ return;
-static void disconnect_work(struct work_struct *work)
-{
- rtnl_lock();
- if (cfg80211_is_all_idle())
- regulatory_hint_disconnect();
- rtnl_unlock();
+ kfree(wdev->conn->ie);
+ kfree(wdev->conn);
+ wdev->conn = NULL;
}
-static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
-
static int cfg80211_conn_scan(struct wireless_dev *wdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -164,6 +149,9 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
params = &wdev->conn->params;
switch (wdev->conn->state) {
+ case CFG80211_CONN_SCANNING:
+ /* didn't find it during scan ... */
+ return -ENOENT;
case CFG80211_CONN_SCAN_AGAIN:
return cfg80211_conn_scan(wdev);
case CFG80211_CONN_AUTHENTICATE_NEXT:
@@ -200,12 +188,11 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
WLAN_REASON_DEAUTH_LEAVING,
false);
return err;
- case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
+ case CFG80211_CONN_DEAUTH:
cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
NULL, 0,
WLAN_REASON_DEAUTH_LEAVING, false);
- /* return an error so that we call __cfg80211_connect_result() */
- return -EINVAL;
+ return 0;
default:
return 0;
}
@@ -226,7 +213,8 @@ void cfg80211_conn_work(struct work_struct *work)
wdev_unlock(wdev);
continue;
}
- if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) {
+ if (!wdev->conn ||
+ wdev->conn->state == CFG80211_CONN_CONNECTED) {
wdev_unlock(wdev);
continue;
}
@@ -234,12 +222,14 @@ void cfg80211_conn_work(struct work_struct *work)
memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
bssid = bssid_buf;
}
- if (cfg80211_conn_do_work(wdev))
+ if (cfg80211_conn_do_work(wdev)) {
__cfg80211_connect_result(
wdev->netdev, bssid,
NULL, 0, NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
false, NULL);
+ cfg80211_sme_free(wdev);
+ }
wdev_unlock(wdev);
}
@@ -283,9 +273,6 @@ static void __cfg80211_sme_scan_done(struct net_device *dev)
ASSERT_WDEV_LOCK(wdev);
- if (wdev->sme_state != CFG80211_SME_CONNECTING)
- return;
-
if (!wdev->conn)
return;
@@ -294,20 +281,10 @@ static void __cfg80211_sme_scan_done(struct net_device *dev)
return;
bss = cfg80211_get_conn_bss(wdev);
- if (bss) {
+ if (bss)
cfg80211_put_bss(&rdev->wiphy, bss);
- } else {
- /* not found */
- if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
- schedule_work(&rdev->conn_work);
- else
- __cfg80211_connect_result(
- wdev->netdev,
- wdev->conn->params.bssid,
- NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- false, NULL);
- }
+ else
+ schedule_work(&rdev->conn_work);
}
void cfg80211_sme_scan_done(struct net_device *dev)
@@ -319,10 +296,8 @@ void cfg80211_sme_scan_done(struct net_device *dev)
wdev_unlock(wdev);
}
-void cfg80211_sme_rx_auth(struct net_device *dev,
- const u8 *buf, size_t len)
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
@@ -330,11 +305,7 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
ASSERT_WDEV_LOCK(wdev);
- /* should only RX auth frames when connecting */
- if (wdev->sme_state != CFG80211_SME_CONNECTING)
- return;
-
- if (WARN_ON(!wdev->conn))
+ if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
return;
if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
@@ -363,46 +334,226 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
schedule_work(&rdev->conn_work);
} else if (status_code != WLAN_STATUS_SUCCESS) {
- __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
+ __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
+ NULL, 0, NULL, 0,
status_code, false, NULL);
- } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
- wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
+ } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
schedule_work(&rdev->conn_work);
}
}
-bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
{
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
- if (WARN_ON(!wdev->conn))
+ if (!wdev->conn)
return false;
- if (!wdev->conn->prev_bssid_valid)
+ if (status == WLAN_STATUS_SUCCESS) {
+ wdev->conn->state = CFG80211_CONN_CONNECTED;
return false;
+ }
- /*
- * Some stupid APs don't accept reassoc, so we
- * need to fall back to trying regular assoc.
- */
- wdev->conn->prev_bssid_valid = false;
- wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+ if (wdev->conn->prev_bssid_valid) {
+ /*
+ * Some stupid APs don't accept reassoc, so we
+ * need to fall back to trying regular assoc;
+ * return true so no event is sent to userspace.
+ */
+ wdev->conn->prev_bssid_valid = false;
+ wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+ schedule_work(&rdev->conn_work);
+ return true;
+ }
+
+ wdev->conn->state = CFG80211_CONN_DEAUTH;
schedule_work(&rdev->conn_work);
+ return false;
+}
- return true;
+void cfg80211_sme_deauth(struct wireless_dev *wdev)
+{
+ cfg80211_sme_free(wdev);
}
-void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
{
- struct wiphy *wiphy = wdev->wiphy;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ cfg80211_sme_free(wdev);
+}
- wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
+void cfg80211_sme_disassoc(struct wireless_dev *wdev)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+ if (!wdev->conn)
+ return;
+
+ wdev->conn->state = CFG80211_CONN_DEAUTH;
schedule_work(&rdev->conn_work);
}
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
+{
+ cfg80211_sme_disassoc(wdev);
+}
+
+static int cfg80211_sme_connect(struct wireless_dev *wdev,
+ struct cfg80211_connect_params *connect,
+ const u8 *prev_bssid)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+ struct cfg80211_bss *bss;
+ int err;
+
+ if (!rdev->ops->auth || !rdev->ops->assoc)
+ return -EOPNOTSUPP;
+
+ if (wdev->current_bss)
+ return -EALREADY;
+
+ if (WARN_ON(wdev->conn))
+ return -EINPROGRESS;
+
+ wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
+ if (!wdev->conn)
+ return -ENOMEM;
+
+ /*
+ * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
+ */
+ memcpy(&wdev->conn->params, connect, sizeof(*connect));
+ if (connect->bssid) {
+ wdev->conn->params.bssid = wdev->conn->bssid;
+ memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
+ }
+
+ if (connect->ie) {
+ wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
+ GFP_KERNEL);
+ wdev->conn->params.ie = wdev->conn->ie;
+ if (!wdev->conn->ie) {
+ kfree(wdev->conn);
+ wdev->conn = NULL;
+ return -ENOMEM;
+ }
+ }
+
+ if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
+ wdev->conn->auto_auth = true;
+ /* start with open system ... should mostly work */
+ wdev->conn->params.auth_type =
+ NL80211_AUTHTYPE_OPEN_SYSTEM;
+ } else {
+ wdev->conn->auto_auth = false;
+ }
+
+ wdev->conn->params.ssid = wdev->ssid;
+ wdev->conn->params.ssid_len = connect->ssid_len;
+
+ /* see if we have the bss already */
+ bss = cfg80211_get_conn_bss(wdev);
+
+ if (prev_bssid) {
+ memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
+ wdev->conn->prev_bssid_valid = true;
+ }
+
+ /* we're good if we have a matching bss struct */
+ if (bss) {
+ wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+ err = cfg80211_conn_do_work(wdev);
+ cfg80211_put_bss(wdev->wiphy, bss);
+ } else {
+ /* otherwise we'll need to scan for the AP first */
+ err = cfg80211_conn_scan(wdev);
+
+ /*
+ * If we can't scan right now, then we need to scan again
+ * after the current scan finished, since the parameters
+ * changed (unless we find a good AP anyway).
+ */
+ if (err == -EBUSY) {
+ err = 0;
+ wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
+ }
+ }
+
+ if (err)
+ cfg80211_sme_free(wdev);
+
+ return err;
+}
+
+static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+ int err;
+
+ if (!wdev->conn)
+ return 0;
+
+ if (!rdev->ops->deauth)
+ return -EOPNOTSUPP;
+
+ if (wdev->conn->state == CFG80211_CONN_SCANNING ||
+ wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
+ err = 0;
+ goto out;
+ }
+
+ /* wdev->conn->params.bssid must be set if > SCANNING */
+ err = cfg80211_mlme_deauth(rdev, wdev->netdev,
+ wdev->conn->params.bssid,
+ NULL, 0, reason, false);
+ out:
+ cfg80211_sme_free(wdev);
+ return err;
+}
+
+/*
+ * code shared for in-device and software SME
+ */
+
+static bool cfg80211_is_all_idle(void)
+{
+ struct cfg80211_registered_device *rdev;
+ struct wireless_dev *wdev;
+ bool is_all_idle = true;
+
+ /*
+ * All devices must be idle as otherwise if you are actively
+ * scanning some new beacon hints could be learned and would
+ * count as new regulatory hints.
+ */
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ list_for_each_entry(wdev, &rdev->wdev_list, list) {
+ wdev_lock(wdev);
+ if (wdev->conn || wdev->current_bss)
+ is_all_idle = false;
+ wdev_unlock(wdev);
+ }
+ }
+
+ return is_all_idle;
+}
+
+static void disconnect_work(struct work_struct *work)
+{
+ rtnl_lock();
+ if (cfg80211_is_all_idle())
+ regulatory_hint_disconnect();
+ rtnl_unlock();
+}
+
+static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
+
+
+/*
+ * API calls for drivers implementing connect/disconnect and
+ * SME event handling
+ */
+
void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len,
@@ -421,9 +572,6 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
return;
- if (wdev->sme_state != CFG80211_SME_CONNECTING)
- return;
-
nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
bssid, req_ie, req_ie_len,
resp_ie, resp_ie_len,
@@ -460,15 +608,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
wdev->current_bss = NULL;
}
- if (wdev->conn)
- wdev->conn->state = CFG80211_CONN_IDLE;
-
if (status != WLAN_STATUS_SUCCESS) {
- wdev->sme_state = CFG80211_SME_IDLE;
- if (wdev->conn)
- kfree(wdev->conn->ie);
- kfree(wdev->conn);
- wdev->conn = NULL;
kfree(wdev->connect_keys);
wdev->connect_keys = NULL;
wdev->ssid_len = 0;
@@ -477,21 +617,16 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
}
if (!bss)
- bss = cfg80211_get_bss(wdev->wiphy,
- wdev->conn ? wdev->conn->params.channel :
- NULL,
- bssid,
+ bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
wdev->ssid, wdev->ssid_len,
WLAN_CAPABILITY_ESS,
WLAN_CAPABILITY_ESS);
-
if (WARN_ON(!bss))
return;
cfg80211_hold_bss(bss_from_pub(bss));
wdev->current_bss = bss_from_pub(bss);
- wdev->sme_state = CFG80211_SME_CONNECTED;
cfg80211_upload_connect_keys(wdev);
rcu_read_lock();
@@ -527,8 +662,6 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
struct cfg80211_event *ev;
unsigned long flags;
- CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
-
ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
if (!ev)
return;
@@ -569,13 +702,8 @@ void __cfg80211_roamed(struct wireless_dev *wdev,
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
goto out;
- if (wdev->sme_state != CFG80211_SME_CONNECTED)
- goto out;
-
- /* internal error -- how did we get to CONNECTED w/o BSS? */
- if (WARN_ON(!wdev->current_bss)) {
+ if (WARN_ON(!wdev->current_bss))
goto out;
- }
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
@@ -625,8 +753,6 @@ void cfg80211_roamed(struct net_device *dev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_bss *bss;
- CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
wdev->ssid_len, WLAN_CAPABILITY_ESS,
WLAN_CAPABILITY_ESS);
@@ -648,8 +774,6 @@ void cfg80211_roamed_bss(struct net_device *dev,
struct cfg80211_event *ev;
unsigned long flags;
- CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
if (WARN_ON(!bss))
return;
@@ -691,25 +815,14 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
return;
- if (wdev->sme_state != CFG80211_SME_CONNECTED)
- return;
-
if (wdev->current_bss) {
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
}
wdev->current_bss = NULL;
- wdev->sme_state = CFG80211_SME_IDLE;
wdev->ssid_len = 0;
- if (wdev->conn) {
- kfree(wdev->conn->ie);
- wdev->conn->ie = NULL;
- kfree(wdev->conn);
- wdev->conn = NULL;
- }
-
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
/*
@@ -738,8 +851,6 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason,
struct cfg80211_event *ev;
unsigned long flags;
- CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
ev = kzalloc(sizeof(*ev) + ie_len, gfp);
if (!ev)
return;
@@ -757,6 +868,9 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason,
}
EXPORT_SYMBOL(cfg80211_disconnected);
+/*
+ * API calls for nl80211/wext compatibility code
+ */
int cfg80211_connect(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_connect_params *connect,
@@ -764,14 +878,10 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev,
const u8 *prev_bssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct cfg80211_bss *bss = NULL;
int err;
ASSERT_WDEV_LOCK(wdev);
- if (wdev->sme_state != CFG80211_SME_IDLE)
- return -EALREADY;
-
if (WARN_ON(wdev->connect_keys)) {
kfree(wdev->connect_keys);
wdev->connect_keys = NULL;
@@ -807,105 +917,22 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev,
}
}
- if (!rdev->ops->connect) {
- if (!rdev->ops->auth || !rdev->ops->assoc)
- return -EOPNOTSUPP;
+ wdev->connect_keys = connkeys;
+ memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
+ wdev->ssid_len = connect->ssid_len;
- if (WARN_ON(wdev->conn))
- return -EINPROGRESS;
-
- wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
- if (!wdev->conn)
- return -ENOMEM;
-
- /*
- * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
- */
- memcpy(&wdev->conn->params, connect, sizeof(*connect));
- if (connect->bssid) {
- wdev->conn->params.bssid = wdev->conn->bssid;
- memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
- }
-
- if (connect->ie) {
- wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
- GFP_KERNEL);
- wdev->conn->params.ie = wdev->conn->ie;
- if (!wdev->conn->ie) {
- kfree(wdev->conn);
- wdev->conn = NULL;
- return -ENOMEM;
- }
- }
-
- if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
- wdev->conn->auto_auth = true;
- /* start with open system ... should mostly work */
- wdev->conn->params.auth_type =
- NL80211_AUTHTYPE_OPEN_SYSTEM;
- } else {
- wdev->conn->auto_auth = false;
- }
-
- memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
- wdev->ssid_len = connect->ssid_len;
- wdev->conn->params.ssid = wdev->ssid;
- wdev->conn->params.ssid_len = connect->ssid_len;
-
- /* see if we have the bss already */
- bss = cfg80211_get_conn_bss(wdev);
-
- wdev->sme_state = CFG80211_SME_CONNECTING;
- wdev->connect_keys = connkeys;
-
- if (prev_bssid) {
- memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
- wdev->conn->prev_bssid_valid = true;
- }
-
- /* we're good if we have a matching bss struct */
- if (bss) {
- wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
- err = cfg80211_conn_do_work(wdev);
- cfg80211_put_bss(wdev->wiphy, bss);
- } else {
- /* otherwise we'll need to scan for the AP first */
- err = cfg80211_conn_scan(wdev);
- /*
- * If we can't scan right now, then we need to scan again
- * after the current scan finished, since the parameters
- * changed (unless we find a good AP anyway).
- */
- if (err == -EBUSY) {
- err = 0;
- wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
- }
- }
- if (err) {
- kfree(wdev->conn->ie);
- kfree(wdev->conn);
- wdev->conn = NULL;
- wdev->sme_state = CFG80211_SME_IDLE;
- wdev->connect_keys = NULL;
- wdev->ssid_len = 0;
- }
-
- return err;
- } else {
- wdev->sme_state = CFG80211_SME_CONNECTING;
- wdev->connect_keys = connkeys;
+ if (!rdev->ops->connect)
+ err = cfg80211_sme_connect(wdev, connect, prev_bssid);
+ else
err = rdev_connect(rdev, dev, connect);
- if (err) {
- wdev->connect_keys = NULL;
- wdev->sme_state = CFG80211_SME_IDLE;
- return err;
- }
- memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
- wdev->ssid_len = connect->ssid_len;
-
- return 0;
+ if (err) {
+ wdev->connect_keys = NULL;
+ wdev->ssid_len = 0;
+ return err;
}
+
+ return 0;
}
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
@@ -916,78 +943,17 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
ASSERT_WDEV_LOCK(wdev);
- if (wdev->sme_state == CFG80211_SME_IDLE)
- return -EINVAL;
-
kfree(wdev->connect_keys);
wdev->connect_keys = NULL;
- if (!rdev->ops->disconnect) {
- if (!rdev->ops->deauth)
- return -EOPNOTSUPP;
-
- /* was it connected by userspace SME? */
- if (!wdev->conn) {
- cfg80211_mlme_down(rdev, dev);
- goto disconnect;
- }
-
- if (wdev->sme_state == CFG80211_SME_CONNECTING &&
- (wdev->conn->state == CFG80211_CONN_SCANNING ||
- wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
- wdev->sme_state = CFG80211_SME_IDLE;
- kfree(wdev->conn->ie);
- kfree(wdev->conn);
- wdev->conn = NULL;
- wdev->ssid_len = 0;
- return 0;
- }
-
- /* wdev->conn->params.bssid must be set if > SCANNING */
- err = cfg80211_mlme_deauth(rdev, dev,
- wdev->conn->params.bssid,
- NULL, 0, reason, false);
- if (err)
- return err;
+ if (wdev->conn) {
+ err = cfg80211_sme_disconnect(wdev, reason);
+ } else if (!rdev->ops->disconnect) {
+ cfg80211_mlme_down(rdev, dev);
+ err = 0;
} else {
err = rdev_disconnect(rdev, dev, reason);
- if (err)
- return err;
}
- disconnect:
- if (wdev->sme_state == CFG80211_SME_CONNECTED)
- __cfg80211_disconnected(dev, NULL, 0, 0, false);
- else if (wdev->sme_state == CFG80211_SME_CONNECTING)
- __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
- WLAN_STATUS_UNSPECIFIED_FAILURE,
- wextev, NULL);
-
- return 0;
-}
-
-void cfg80211_sme_disassoc(struct net_device *dev,
- struct cfg80211_internal_bss *bss)
-{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
- u8 bssid[ETH_ALEN];
-
- ASSERT_WDEV_LOCK(wdev);
-
- if (!wdev->conn)
- return;
-
- if (wdev->conn->state == CFG80211_CONN_IDLE)
- return;
-
- /*
- * Ok, so the association was made by this SME -- we don't
- * want it any more so deauthenticate too.
- */
-
- memcpy(bssid, bss->pub.bssid, ETH_ALEN);
-
- cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
- WLAN_REASON_DEAUTH_LEAVING, false);
+ return err;
}
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index a53f8404..14c9a25 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -89,7 +89,7 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
wdev_lock(wdev);
- if (wdev->sme_state != CFG80211_SME_IDLE) {
+ if (wdev->conn) {
bool event = true;
if (wdev->wext.connect.channel == chan) {
@@ -188,7 +188,7 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
err = 0;
- if (wdev->sme_state != CFG80211_SME_IDLE) {
+ if (wdev->conn) {
bool event = true;
if (wdev->wext.connect.ssid && len &&
@@ -277,7 +277,7 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
wdev_lock(wdev);
- if (wdev->sme_state != CFG80211_SME_IDLE) {
+ if (wdev->conn) {
err = 0;
/* both automatic */
if (!bssid && !wdev->wext.connect.bssid)
@@ -364,7 +364,7 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
wdev->wext.ie = ie;
wdev->wext.ie_len = ie_len;
- if (wdev->sme_state != CFG80211_SME_IDLE) {
+ if (wdev->conn) {
err = cfg80211_disconnect(rdev, dev,
WLAN_REASON_DEAUTH_LEAVING, false);
if (err)
--
1.8.0
^ permalink raw reply related
* Re: [PATCHv2 00/18] Add support for 5 and 10 MHz channels
From: Johannes Berg @ 2013-05-17 14:39 UTC (permalink / raw)
To: Sam Leffler
Cc: Simon Wunderlich, Adrian Chadd, linux-wireless,
Mathias Kretschmer, Simon Wunderlich
In-Reply-To: <CA+yqC4bY_5Vd=B7nnmjEnDS+gJwD7fFZBkUCKEw0vb0aWucD5Q@mail.gmail.com>
[You need to stop using HTML, it will never make it to our list :-) ]
> The rates are divided by two or
> four (for 10 and 5 MHz), and rounded up. That's pretty much
> the only
> thing which is changed to 20 MHz.
>
>
> I rounded down; can't remember why; probably because that was what the
> PSB (Public Safety Band) spec said to do.
Which is the PSB spec? The current version of 802.11 (-2012) clearly
wants to round up:
8.4.2.3 Supported Rates element
...
Within Beacon, Probe Response, Association Response,
Reassociation Response, Mesh Peering Open, and Mesh Peering
Confirm management frames, each Supported Rate contained in the
BSSBasicRateSet parameter is encoded as an octet with the MSB
(bit 7) set to 1, and bits 6 to 0 are set to the data rate, if
necessary rounded up to the next 500kb/s, in units of 500 kb/s.
For example, a 2.25 Mb/s rate contained in the BSSBasicRateSet
parameter is encoded as X'85'.
johannes
^ permalink raw reply
* Re: [PATCHv2 00/18] Add support for 5 and 10 MHz channels
From: Adrian Chadd @ 2013-05-17 15:39 UTC (permalink / raw)
To: Simon Wunderlich
Cc: linux-wireless, Johannes Berg, Mathias Kretschmer,
Simon Wunderlich
In-Reply-To: <20130517095825.GA1555@pandem0nium>
On 17 May 2013 02:58, Simon Wunderlich
<simon.wunderlich@s2003.tu-chemnitz.de> wrote:
> Maybe I can do the same for the Linux IEs too, just for reference.
> We basically enable it only if 802.11a or g is supported (802.11b is not
> supported), and announce OFDM only rates. The rates are divided by two or
> four (for 10 and 5 MHz), and rounded up. That's pretty much the only
> thing which is changed to 20 MHz.
Cool. I'll do it over the weekend. I'm currently at BSDCan 2013 fixing
and talking about wifi stuff. :-)
> BTW, how is HT handled for narrow channels in FreeBSD? Do you just send
> HT IEs as they are in 20 MHz? Also, do you disable secondary channels?
> (I would probably do that, using two adjacent 5 MHz channels should be
> replaceable by one 10 MHz channel ...)
I haven't enabled 11n half/quarter rate channels yet. Yeah, I intend
to leave the MCS IE's alone, as the MCS rates are a bitmap. I won't
disable HT40 but it wouldn't make sense to configure it.
(But who knows, people do odd crap.)
Adrian
^ permalink raw reply
* Re: pull-request: mac80211 2013-05-16
From: John W. Linville @ 2013-05-17 18:21 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless
In-Reply-To: <1368737568.8253.7.camel@jlt4.sipsolutions.net>
On Thu, May 16, 2013 at 10:52:48PM +0200, Johannes Berg wrote:
> John,
>
> Here's my first pull request for the 3.10 fixes stream. Unfortunately, a
> fairly large number of these also had to be tagged for stable.
>
> This is what I have:
> * a patch from Felix to fix RCU usage in his rate table code
> * a patch from Ilan to add the wdev id to some notifications so they
> can
> actually be used by userspace
> * Sasha Levin found an issue in how hwsim handles devices
> * a fix for a bug in the wiphy_register() error path that's been there
> forever
> * three fixes for WoWLAN
> * AP mode frame matching was erroneously giving frames to all virtual
> AP
> interfaces (reported by Jouni)
> * a fix for HT handling in my CSA changes, found by Sujith
> * a fix for some locking simplifications gone wrong
> * Ben Greear found more cfg80211/mac80211 state confusion
> * and a fix for another bug found by Jouni: local state changes need to
> be
> reported by mac80211 to cfg80211 so it disconnects properly.
>
> Please pull. Thanks,
> johannes
>
>
>
> The following changes since commit 61f1598278876527314f5fc1d00cf0a4d525c1f7:
>
> Merge branch 'wireless' (2013-05-10 09:44:05 -0700)
>
> are available in the git repository at:
>
>
> git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git for-john
>
> for you to fetch changes up to e248ad30204eff6559b4d2d94d49d9d46c08185a:
>
> cfg80211: fix sending WoWLAN TCP wakeup settings (2013-05-16 22:38:09 +0200)
Pulling now...
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply
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