Hi,
Could someone familiar with the ath9k help us solve a problem with
mesh beaconing?
For reference, with ath5k the following sequence will bring up a mesh
interface and start beaconing:
modprobe ath5k debug=0x10 # ATH5K_DBG_BEACON
iw phy phy0 interface add mesh type mp mesh_id kangaroo
iw dev mesh set channel 11
ifconfig mesh up
dmesg:
[ 622.869143] ath5k phy0: (ath5k_beaconq_config:1512): beacon
queueprops tqi_aifs:0 tqi_cw_min:0 tqi_cw_max:0
[ 622.869234] ath5k phy0: (ath5k_beacon_update_timers:2239):
reconfigured timers based on HW TSF
[ 622.869234] ath5k phy0: (ath5k_beacon_update_timers:2250): bc_tsf
ffffffffffffffff hw_tsf 85a8fb61a bc_tu 4294967295 hw_tu 35038189
nexttbtt 35039000
[ 622.869234] ath5k phy0: (ath5k_beacon_update_timers:2254): intval
1000 AR5K_BEACON_ENA
[ 623.690964] ath5k phy0: (ath5k_beacon_send:2094): in beacon_send
[ 623.691301] ath5k phy0: (ath5k_beacon_send:2144): TXDP[7] = 5ce5e00
(c5ce5e00)
...
With ath9k, the following sequence will bring up a mesh interface and
*not* start beaconing:
modprobe ath5k debug=0x100 # ATH_DBG_BEACON
iw phy phy0 interface add mesh type mp mesh_id kangaroo
iw dev mesh set channel 11
ifconfig mesh up
dmesg reports that beaconing has started, but no beacons are observed
in the air:
[ 518.277283] ath9k: IBSS nexttbtt 29406000 intval 1000 (1000)
[ 518.301884] ath9k: TXDP9 = 68ca000 (c68ca000)
Beacons are only observed after scanning:
iw dev mesh scan
dmesg:
[ 768.944564] ath9k: IBSS nexttbtt 4291335000 intval 1000 (1000)
[ 768.964665] ath9k: TXDP9 = 68ca000 (c68ca000)
Any suggestions will be appreciated.
Thanks,
Javier
Bob,
Thanks for the pointer. I reviewed the ath9k looking for ordering
problems in configuring the opmode. I could not see anything wrong.
The opmode is set to NL80211_IFTYPE_MONITOR (6) when the device is
started, and to NL80211_IFTYPE_MESH_POINT (7) on add_interface. At
that point beaconing is enabled and there is a new reset. But I'm new
to this card, so I'm probably overlooking something.
I added the following tags to the code:
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1579,6 +1579,8 @@ static void ath9k_hw_set_operating_mode(struct
ath_hw *ah, int opmode)
val = REG_READ(ah, AR_STA_ID1);
val &= ~(AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC);
+ printk("ath9k_hw_set_operating_mode: %d\n", opmode);
+ WARN_ON(1);
switch (opmode) {
case NL80211_IFTYPE_AP:
REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_STA_AP
diff --git a/drivers/net/wireless/ath/ath9k/main.c
b/drivers/net/wireless/ath/ath9k/main.c
index 9b9b4e8..730607e 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1939,6 +1939,7 @@ static int ath9k_start(struct ieee80211_hw *hw)
* and then setup of the interrupt mask.
*/
spin_lock_bh(&sc->sc_resetlock);
+ printk("ath9k_start: sc_ah=%p opmode = %d\n", sc->sc_ah,
sc->sc_ah->opmode);
r = ath9k_hw_reset(sc->sc_ah, init_channel, false);
if (r) {
DPRINTF(sc, ATH_DBG_FATAL,
@@ -2207,6 +2208,7 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
}
/* Set the device opmode */
+ printk("ath9k_add_interface: sc_ah=%p opmode=%d\n", sc->sc_ah,
ic_opmode);
sc->sc_ah->opmode = ic_opmode;
/*
And this is the dmesg output after executing
modprobe ath9k debug=0x100
iw phy phy0 interface add mesh type mp mesh_id kangaroo
iw dev mesh set channel 11
ifconfig mesh up
dmesg:
[ 1977.840919] ath9k_start: sc_ah=c7398000 opmode = 6
[ 1977.844540] ath9k_hw_set_operating_mode: 6
[ 1977.844972] ------------[ cut here ]------------
[ 1977.845710] WARNING: at drivers/net/wireless/ath/ath9k/hw.c:1583
ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]()
[ 1977.846530] Hardware name: Uknown
[ 1977.846890] Modules linked in: ath9k mac80211 ath cfg80211 rfkill
[last unloaded: rfkill]
[ 1977.848896] Pid: 1725, comm: ifconfig Not tainted 2.6.31-rc6-wl #18
[ 1977.849505] Call Trace:
[ 1977.849931] [<c021f5ea>] warn_slowpath_common+0x60/0x77
[ 1977.850611] [<c021f60e>] warn_slowpath_null+0xd/0x10
[ 1977.851320] [<c988e12f>] ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]
[ 1977.852243] [<c9890b2b>] ath9k_hw_reset+0x705/0xe8a [ath9k]
[ 1977.852967] [<c0220034>] ? printk+0x15/0x17
[ 1977.853796] [<c989f182>] ath9k_start+0xd6/0x1c1 [ath9k]
[ 1977.854764] [<c9868768>] ieee80211_open+0x1ec/0x4bf [mac80211]
[ 1977.855482] [<c023217e>] ? __raw_notifier_call_chain+0xe/0x10
[ 1977.856068] [<c04e5581>] dev_open+0x8a/0xc5
[ 1977.856688] [<c04e31d0>] dev_change_flags+0x95/0x143
[ 1977.857234] [<c0527e3e>] devinet_ioctl+0x210/0x45a
[ 1977.857877] [<c0529d49>] inet_ioctl+0x88/0xa1
[ 1977.858508] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1977.859016] [<c04d6ceb>] sock_ioctl+0x1cc/0x1ee
[ 1977.859640] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1977.860136] [<c0290a39>] vfs_ioctl+0x19/0x50
[ 1977.860725] [<c02912dd>] do_vfs_ioctl+0x472/0x4aa
[ 1977.861231] [<c032575c>] ? selinux_file_ioctl+0x39/0x3d
[ 1977.861892] [<c0291355>] sys_ioctl+0x40/0x5a
[ 1977.862525] [<c0202a55>] syscall_call+0x7/0xb
[ 1977.862994] ---[ end trace 7b9c48f5bc2a0542 ]---
[ 1977.867463] ath9k_hw_set_operating_mode: 6
[ 1977.867910] ------------[ cut here ]------------
[ 1977.868702] WARNING: at drivers/net/wireless/ath/ath9k/hw.c:1583
ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]()
[ 1977.869583] Hardware name: Uknown
[ 1977.869964] Modules linked in: ath9k mac80211 ath cfg80211 rfkill
[last unloaded: rfkill]
[ 1977.872049] Pid: 1725, comm: ifconfig Tainted: G W 2.6.31-rc6-wl #18
[ 1977.872714] Call Trace:
[ 1977.873149] [<c021f5ea>] warn_slowpath_common+0x60/0x77
[ 1977.873837] [<c021f60e>] warn_slowpath_null+0xd/0x10
[ 1977.874631] [<c988e12f>] ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]
[ 1977.875331] [<c988e1bd>] ath9k_hw_setopmode+0xe/0x10 [ath9k]
[ 1977.876326] [<c98a1ea0>] ath_startrecv+0x96/0xc6 [ath9k]
[ 1977.877261] [<c989f1c4>] ath9k_start+0x118/0x1c1 [ath9k]
[ 1977.878265] [<c9868768>] ieee80211_open+0x1ec/0x4bf [mac80211]
[ 1977.879005] [<c023217e>] ? __raw_notifier_call_chain+0xe/0x10
[ 1977.879737] [<c04e5581>] dev_open+0x8a/0xc5
[ 1977.880237] [<c04e31d0>] dev_change_flags+0x95/0x143
[ 1977.880928] [<c0527e3e>] devinet_ioctl+0x210/0x45a
[ 1977.881604] [<c0529d49>] inet_ioctl+0x88/0xa1
[ 1977.882110] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1977.882759] [<c04d6ceb>] sock_ioctl+0x1cc/0x1ee
[ 1977.883276] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1977.883941] [<c0290a39>] vfs_ioctl+0x19/0x50
[ 1977.884597] [<c02912dd>] do_vfs_ioctl+0x472/0x4aa
[ 1977.885125] [<c032575c>] ? selinux_file_ioctl+0x39/0x3d
[ 1977.885806] [<c0291355>] sys_ioctl+0x40/0x5a
[ 1977.886306] [<c0202a55>] syscall_call+0x7/0xb
[ 1977.886905] ---[ end trace 7b9c48f5bc2a0543 ]---
[ 1978.356622] ath9k_add_interface: sc_ah=c7398000 opmode=7
[ 1978.358378] ath9k: IBSS nexttbtt 4000 intval 1000 (1000)
[ 1978.358531] ath9k: TXDP9 = 7387000 (c7387000)
[ 1978.361738] ath9k_hw_set_operating_mode: 7
[ 1978.362168] ------------[ cut here ]------------
[ 1978.362938] WARNING: at drivers/net/wireless/ath/ath9k/hw.c:1583
ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]()
[ 1978.363798] Hardware name: Uknown
[ 1978.364173] Modules linked in: ath9k mac80211 ath cfg80211 rfkill
[last unloaded: rfkill]
[ 1978.366162] Pid: 1725, comm: ifconfig Tainted: G W 2.6.31-rc6-wl #18
[ 1978.366809] Call Trace:
[ 1978.367240] [<c021f5ea>] warn_slowpath_common+0x60/0x77
[ 1978.367910] [<c021f60e>] warn_slowpath_null+0xd/0x10
[ 1978.368738] [<c988e12f>] ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]
[ 1978.369661] [<c9890b2b>] ath9k_hw_reset+0x705/0xe8a [ath9k]
[ 1978.370321] [<c988b4f2>] ? ath9k_ioread32+0x2f/0x32 [ath9k]
[ 1978.371299] [<c989f316>] ath_set_channel+0xa9/0x135 [ath9k]
[ 1978.372208] [<c98a0f12>] ath9k_config+0x1c4/0x231 [ath9k]
[ 1978.373135] [<c985f5f9>] ieee80211_hw_config+0x86/0x8e [mac80211]
[ 1978.374105] [<c986897d>] ieee80211_open+0x401/0x4bf [mac80211]
[ 1978.374789] [<c04e5581>] dev_open+0x8a/0xc5
[ 1978.375372] [<c04e31d0>] dev_change_flags+0x95/0x143
[ 1978.375919] [<c0527e3e>] devinet_ioctl+0x210/0x45a
[ 1978.376559] [<c0529d49>] inet_ioctl+0x88/0xa1
[ 1978.377064] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1978.377690] [<c04d6ceb>] sock_ioctl+0x1cc/0x1ee
[ 1978.378196] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1978.378829] [<c0290a39>] vfs_ioctl+0x19/0x50
[ 1978.379449] [<c02912dd>] do_vfs_ioctl+0x472/0x4aa
[ 1978.379971] [<c032575c>] ? selinux_file_ioctl+0x39/0x3d
[ 1978.380628] [<c0291355>] sys_ioctl+0x40/0x5a
[ 1978.381116] [<c0202a55>] syscall_call+0x7/0xb
[ 1978.381691] ---[ end trace 7b9c48f5bc2a0544 ]---
[ 1978.384718] ath9k_hw_set_operating_mode: 7
[ 1978.385157] ------------[ cut here ]------------
[ 1978.385944] WARNING: at drivers/net/wireless/ath/ath9k/hw.c:1583
ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]()
[ 1978.386814] Hardware name: Uknown
[ 1978.387186] Modules linked in: ath9k mac80211 ath cfg80211 rfkill
[last unloaded: rfkill]
[ 1978.389095] Pid: 1725, comm: ifconfig Tainted: G W 2.6.31-rc6-wl #18
[ 1978.389719] Call Trace:
[ 1978.390143] [<c021f5ea>] warn_slowpath_common+0x60/0x77
[ 1978.390832] [<c021f60e>] warn_slowpath_null+0xd/0x10
[ 1978.391675] [<c988e12f>] ath9k_hw_set_operating_mode+0x36/0xb6 [ath9k]
[ 1978.392609] [<c988e1bd>] ath9k_hw_setopmode+0xe/0x10 [ath9k]
[ 1978.393262] [<c98a1ea0>] ath_startrecv+0x96/0xc6 [ath9k]
[ 1978.394299] [<c989f355>] ath_set_channel+0xe8/0x135 [ath9k]
[ 1978.395230] [<c98a0f12>] ath9k_config+0x1c4/0x231 [ath9k]
[ 1978.396177] [<c985f5f9>] ieee80211_hw_config+0x86/0x8e [mac80211]
[ 1978.397187] [<c986897d>] ieee80211_open+0x401/0x4bf [mac80211]
[ 1978.397940] [<c04e5581>] dev_open+0x8a/0xc5
[ 1978.398582] [<c04e31d0>] dev_change_flags+0x95/0x143
[ 1978.399143] [<c0527e3e>] devinet_ioctl+0x210/0x45a
[ 1978.399787] [<c0529d49>] inet_ioctl+0x88/0xa1
[ 1978.400429] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1978.400943] [<c04d6ceb>] sock_ioctl+0x1cc/0x1ee
[ 1978.401588] [<c04d6b1f>] ? sock_ioctl+0x0/0x1ee
[ 1978.402104] [<c0290a39>] vfs_ioctl+0x19/0x50
[ 1978.402715] [<c02912dd>] do_vfs_ioctl+0x472/0x4aa
[ 1978.403202] [<c032575c>] ? selinux_file_ioctl+0x39/0x3d
[ 1978.403829] [<c0291355>] sys_ioctl+0x40/0x5a
[ 1978.404448] [<c0202a55>] syscall_call+0x7/0xb
[ 1978.404908] ---[ end trace 7b9c48f5bc2a0545 ]---
Any suggestions will be greatly appreciated.
Thanks,
Javier
On Wed, Aug 19, 2009 at 8:22 PM, Bob Copeland<[email protected]> wrote:
> On Wed, Aug 19, 2009 at 7:33 PM, Javier Cardona<[email protected]> wrote:
>> Hi,
>>
>> Could someone familiar with the ath9k help us solve a problem with
>> mesh beaconing?
>
> I am not too familiar with ath9k, but I would suspect that
> there's an ordering issue with when enable_beacon is recognized,
> so beaconing doesn't start until the next reset() is called.
>
> E.g. this fix for ath5k sounds similar:
>
> commit 9718512d81a7f7bd0166d1e033f8395022ecb2e9
> Author: Bob Copeland <[email protected]>
> Date: ? Wed Jul 29 10:29:03 2009 -0400
>
> ? ?ath5k: update PCU opmode whenever a new interface is added
>
> --
> Bob Copeland %% http://www.bobcopeland.com
>
--
Javier Cardona
cozybit Inc.
http://www.cozybit.com
On Wed, Aug 19, 2009 at 7:33 PM, Javier Cardona<[email protected]> wrote:
> Hi,
>
> Could someone familiar with the ath9k help us solve a problem with
> mesh beaconing?
I am not too familiar with ath9k, but I would suspect that
there's an ordering issue with when enable_beacon is recognized,
so beaconing doesn't start until the next reset() is called.
E.g. this fix for ath5k sounds similar:
commit 9718512d81a7f7bd0166d1e033f8395022ecb2e9
Author: Bob Copeland <[email protected]>
Date: Wed Jul 29 10:29:03 2009 -0400
ath5k: update PCU opmode whenever a new interface is added
--
Bob Copeland %% http://www.bobcopeland.com