This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
is not present in the FW. The id of some WMI commands is also fixed
(there was an error in the enum order), and a function to set RSN caps
is added.
Signed-off-by: Alfonso Sánchez-Beato <[email protected]>
---
drivers/net/wireless/ath/ath6kl/cfg80211.c | 21 ++++++---------------
drivers/net/wireless/ath/ath6kl/main.c | 10 +++-------
drivers/net/wireless/ath/ath6kl/wmi.c | 23 +++++++++++++++++++++++
drivers/net/wireless/ath/ath6kl/wmi.h | 15 +++++++++++----
4 files changed, 43 insertions(+), 26 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 2ba8cf3f38af..1b89c53d47e7 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -2933,13 +2933,11 @@ static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
* advertise the same in beacon/probe response. Send
* the complete RSN IE capability field to firmware
*/
- if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
- test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
- ar->fw_capabilities)) {
- res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
- WLAN_EID_RSN, WMI_RSN_IE_CAPB,
- (const u8 *) &rsn_capab,
- sizeof(rsn_capab));
+ if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *)&rsn_capab)) {
+ ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "RSN caps %d\n", rsn_capab);
+
+ res = ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
+ rsn_capab);
vif->rsn_capab = rsn_capab;
if (res < 0)
return res;
@@ -3918,14 +3916,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
return -EINVAL;
}
- /*
- * Even if the fw has HT support, advertise HT cap only when
- * the firmware has support to override RSN capability, otherwise
- * 4-way handshake would fail.
- */
- if (!(ht &&
- test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
- ar->fw_capabilities))) {
+ if (!ht) {
ath6kl_band_2ghz.ht_cap.cap = 0;
ath6kl_band_2ghz.ht_cap.ht_supported = false;
ath6kl_band_5ghz.ht_cap.cap = 0;
diff --git a/drivers/net/wireless/ath/ath6kl/main.c b/drivers/net/wireless/ath/ath6kl/main.c
index db95f85751e3..4e186f8b3950 100644
--- a/drivers/net/wireless/ath/ath6kl/main.c
+++ b/drivers/net/wireless/ath/ath6kl/main.c
@@ -579,13 +579,9 @@ static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
* reconfigure any saved RSN IE capabilites in the beacon /
* probe response to stay in sync with the supplicant.
*/
- if (vif->rsn_capab &&
- test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
- ar->fw_capabilities))
- ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
- WLAN_EID_RSN, WMI_RSN_IE_CAPB,
- (const u8 *) &vif->rsn_capab,
- sizeof(vif->rsn_capab));
+ if (vif->rsn_capab)
+ ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
+ vif->rsn_capab);
return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
&vif->profile);
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index 777acc564ac9..d7de9224d755 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -4168,3 +4168,26 @@ void ath6kl_wmi_shutdown(struct wmi *wmi)
kfree(wmi->last_mgmt_tx_frame);
kfree(wmi);
}
+
+int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap)
+{
+ struct sk_buff *skb;
+ struct wmi_rsn_cap_cmd *cmd;
+
+ skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
+ if (!skb)
+ return -ENOMEM;
+
+ ath6kl_dbg(ATH6KL_DBG_WMI, "set_rsn_cap: 0x%04x\n", rsn_cap);
+
+ cmd = (struct wmi_rsn_cap_cmd *)skb->data;
+ cmd->rsn_cap = cpu_to_le16(rsn_cap);
+
+ return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_RSN_CAP_CMDID,
+ NO_SYNC_WMIFLAG);
+}
+
+int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx)
+{
+ return ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_GET_RSN_CAP_CMDID);
+}
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h b/drivers/net/wireless/ath/ath6kl/wmi.h
index a60bb49fe920..011d4b6fb5ab 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.h
+++ b/drivers/net/wireless/ath/ath6kl/wmi.h
@@ -597,10 +597,6 @@ enum wmi_cmd_id {
WMI_GREENTX_PARAMS_CMDID,
- WMI_RTT_MEASREQ_CMDID,
- WMI_RTT_CAPREQ_CMDID,
- WMI_RTT_STATUSREQ_CMDID,
-
/* WPS Commands */
WMI_WPS_START_CMDID,
WMI_GET_WPS_STATUS_CMDID,
@@ -621,6 +617,10 @@ enum wmi_cmd_id {
WMI_RX_FILTER_COALESCE_FILTER_OP_CMDID,
WMI_RX_FILTER_SET_FRAME_TEST_LIST_CMDID,
+ WMI_RTT_MEASREQ_CMDID,
+ WMI_RTT_CAPREQ_CMDID,
+ WMI_RTT_STATUSREQ_CMDID,
+
WMI_SEND_MGMT_CMDID,
WMI_BEGIN_SCAN_CMDID,
@@ -2533,6 +2533,10 @@ enum wmi_sync_flag {
END_WMIFLAG
};
+struct wmi_rsn_cap_cmd {
+ __le16 rsn_cap;
+} __packed;
+
enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi);
void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id ep_id);
int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb);
@@ -2728,4 +2732,7 @@ void *ath6kl_wmi_init(struct ath6kl *devt);
void ath6kl_wmi_shutdown(struct wmi *wmi);
void ath6kl_wmi_reset(struct wmi *wmi);
+int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap);
+int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx);
+
#endif /* WMI_H */
--
2.14.1
On Fri, Apr 27, 2018 at 9:57 AM Alfonso Sanchez-Beato <
[email protected]> wrote:
> Hi Steve,
> On Fri, Apr 27, 2018 at 5:47 PM, Steve deRosier <[email protected]>
wrote:
> > Hi Alfonso,
> >
> > On Thu, Apr 12, 2018 at 8:42 AM Alfonso S=C3=A1nchez-Beato <
> > [email protected]> wrote:
> >
> >> This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
> >> is not present in the FW. The id of some WMI commands is also fixed
> >> (there was an error in the enum order), and a function to set RSN caps
> >> is added.
> >
> >> Signed-off-by: Alfonso S=C3=A1nchez-Beato <
[email protected]>
> >> ---
> >> drivers/net/wireless/ath/ath6kl/cfg80211.c | 21 ++++++--------------=
-
> >> drivers/net/wireless/ath/ath6kl/main.c | 10 +++-------
> >> drivers/net/wireless/ath/ath6kl/wmi.c | 23
+++++++++++++++++++++++
> >> drivers/net/wireless/ath/ath6kl/wmi.h | 15 +++++++++++----
> >> 4 files changed, 43 insertions(+), 26 deletions(-)
> >
> >> diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c
> > b/drivers/net/wireless/ath/ath6kl/cfg80211.c
> >> index 2ba8cf3f38af..1b89c53d47e7 100644
> >> --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
> >> +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
> >> @@ -2933,13 +2933,11 @@ static int ath6kl_start_ap(struct wiphy *wiphy=
,
> > struct net_device *dev,
> >> * advertise the same in beacon/probe response. Send
> >> * the complete RSN IE capability field to firmware
> >> */
> >> - if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
> >> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> >> - ar->fw_capabilities)) {
> >> - res =3D ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx=
,
> >> - WLAN_EID_RSN,
WMI_RSN_IE_CAPB,
> >> - (const u8 *) &rsn_capab,
> >> - sizeof(rsn_capab));
> >> + if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *)&rsn_capab)) {
> >> + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "RSN caps %d\n",
> > rsn_capab);
> >> +
> >> + res =3D ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_id=
x,
> >> + rsn_capab);
> >> vif->rsn_capab =3D rsn_capab;
> >> if (res < 0)
> >> return res;
> >
> > So, let me see if I understand this correctly. Original flow was:
> >
> > 1. get RSN capable from the beacon if one
> > 2. if the firmware is capable of the override, set the IE else don't d=
o
> > anything
> >
> > New flow:
> > 1. get RSN capable from the beacon if one
> > 2. unconditionally send the rsn_cap WMI down
> >
> > So, what happens on a firmware that _does_ have the rsn-cap-override
flag
> > set? I'm guessing nothing good. Admittedly I haven't tried your patch
on
> > my platform.
> >
> > I think that simply ignoring the flag and using a WMI instead of settin=
g
> > the IE on all devices AR6002..AR6004 is likely going to cause problems
for
> > everyone else.
> Admittedly, I have not a wide range of devices to test. This patch was
> mostly an RFC to see if the issue is only for a particular fw revision
> and to expose it for people that might find it useful. Note that I am
> not the first person to hit this, see for instance
> http://www.spinics.net/lists/linux-wireless/msg115085.html
Fair enough. However, breaking it for the rest of the devices out there
isn't good. I welcome the fixing of it, but it has to be done across the
spectrum of the supported chips.
> >
> >
> >> @@ -3918,14 +3916,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
> >> return -EINVAL;
> >> }
> >
> >> - /*
> >> - * Even if the fw has HT support, advertise HT cap only when
> >> - * the firmware has support to override RSN capability,
otherwise
> >> - * 4-way handshake would fail.
> >> - */
> >> - if (!(ht &&
> >> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> >> - ar->fw_capabilities))) {
> >> + if (!ht) {
> >
> > Perhaps the comment isn't relevant if we're using the RSN WMI command
on a
> > device with the flag, but I'm willing to bet you neither tested it nor
that
> > the assumption is true. I'm guessing this change just broke the 4-way
> > handshake for the majority of devices.
> >
> >> ath6kl_band_2ghz.ht_cap.cap =3D 0;
> >> ath6kl_band_2ghz.ht_cap.ht_supported =3D false;
> >> ath6kl_band_5ghz.ht_cap.cap =3D 0;
> >> diff --git a/drivers/net/wireless/ath/ath6kl/main.c
> > b/drivers/net/wireless/ath/ath6kl/main.c
> >> index db95f85751e3..4e186f8b3950 100644
> >> --- a/drivers/net/wireless/ath/ath6kl/main.c
> >> +++ b/drivers/net/wireless/ath/ath6kl/main.c
> >> @@ -579,13 +579,9 @@ static int ath6kl_commit_ch_switch(struct
ath6kl_vif
> > *vif, u16 channel)
> >> * reconfigure any saved RSN IE capabilites in the
beacon
> > /
> >> * probe response to stay in sync with the supplicant=
.
> >> */
> >> - if (vif->rsn_capab &&
> >> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> >> - ar->fw_capabilities))
> >> - ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx=
,
> >> - WLAN_EID_RSN,
> > WMI_RSN_IE_CAPB,
> >> - (const u8 *)
> > &vif->rsn_capab,
> >> - sizeof(vif->rsn_capab));
> >> + if (vif->rsn_capab)
> >> + ath6kl_wmi_set_rsn_cap(ar->wmi,
vif->fw_vif_idx,
> >> + vif->rsn_capab);
> >
> >
> > So, basically same comment as the first one.
> >
> >> return ath6kl_wmi_ap_profile_commit(ar->wmi,
> > vif->fw_vif_idx,
> >> &vif->profile);
> >> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c
> > b/drivers/net/wireless/ath/ath6kl/wmi.c
> >> index 777acc564ac9..d7de9224d755 100644
> >> --- a/drivers/net/wireless/ath/ath6kl/wmi.c
> >> +++ b/drivers/net/wireless/ath/ath6kl/wmi.c
> >> @@ -4168,3 +4168,26 @@ void ath6kl_wmi_shutdown(struct wmi *wmi)
> >> kfree(wmi->last_mgmt_tx_frame);
> >> kfree(wmi);
> >> }
> >> +
> >> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap)
> >> +{
> >> + struct sk_buff *skb;
> >> + struct wmi_rsn_cap_cmd *cmd;
> >> +
> >> + skb =3D ath6kl_wmi_get_new_buf(sizeof(*cmd));
> >> + if (!skb)
> >> + return -ENOMEM;
> >> +
> >> + ath6kl_dbg(ATH6KL_DBG_WMI, "set_rsn_cap: 0x%04x\n", rsn_cap);
> >> +
> >> + cmd =3D (struct wmi_rsn_cap_cmd *)skb->data;
> >> + cmd->rsn_cap =3D cpu_to_le16(rsn_cap);
> >> +
> >> + return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
> > WMI_SET_RSN_CAP_CMDID,
> >> + NO_SYNC_WMIFLAG);
> >> +}
> >> +
> >> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx)
> >> +{
> >> + return ath6kl_wmi_simple_cmd(wmi, if_idx,
WMI_GET_RSN_CAP_CMDID);
> >> +}
> >> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h
> > b/drivers/net/wireless/ath/ath6kl/wmi.h
> >> index a60bb49fe920..011d4b6fb5ab 100644
> >> --- a/drivers/net/wireless/ath/ath6kl/wmi.h
> >> +++ b/drivers/net/wireless/ath/ath6kl/wmi.h
> >> @@ -597,10 +597,6 @@ enum wmi_cmd_id {
> >
> >> WMI_GREENTX_PARAMS_CMDID,
> >
> >> - WMI_RTT_MEASREQ_CMDID,
> >> - WMI_RTT_CAPREQ_CMDID,
> >> - WMI_RTT_STATUSREQ_CMDID,
> >> -
> >> /* WPS Commands */
> >> WMI_WPS_START_CMDID,
> >> WMI_GET_WPS_STATUS_CMDID,
> >> @@ -621,6 +617,10 @@ enum wmi_cmd_id {
> >> WMI_RX_FILTER_COALESCE_FILTER_OP_CMDID,
> >> WMI_RX_FILTER_SET_FRAME_TEST_LIST_CMDID,
> >
> >> + WMI_RTT_MEASREQ_CMDID,
> >> + WMI_RTT_CAPREQ_CMDID,
> >> + WMI_RTT_STATUSREQ_CMDID,
> >> +
> >> WMI_SEND_MGMT_CMDID,
> >> WMI_BEGIN_SCAN_CMDID,
> >
> >> @@ -2533,6 +2533,10 @@ enum wmi_sync_flag {
> >> END_WMIFLAG
> >> };
> >
> >
> > I can factually state that the above reordering of the commands is wron=
g
> > for a 6003. The order in the WMI file is consistent for a 6003. Your
> > reordering is consistent for a 6004. Now, the only commands affected by
the
> > reordering aren't utilized by the driver, other than your added get/set
> > RSN_CAP_CMDIDs. But on a 6003, your now used WMI_SET_RSN_CAP_CMDID wil=
l
> > trigger a WMI_GET_OPPPS_CMDID, which isn't what you want.
> >
> > I've encountered this issue a before - wmi code mismatch between the
> > different firmwares and the driver. This is a limitation of the driver
that
> > probably should be resolved in some meaningful way. To date, it's been
> > mitigated by the driver just not using the higher-numbered commands.
But
> > by "meaningful way" I don't include redefining command IDs in favor of
one
> > particular person's firmware and causing problems on the other 99% of
> > devices out there.
> Agreed. I do not have access to much information for the ath6k, so
> this was more like a shot in the dark.
> >
> >> +struct wmi_rsn_cap_cmd {
> >> + __le16 rsn_cap;
> >> +} __packed;
> >> +
> >> enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi);
> >> void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id
> > ep_id);
> >> int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb);
> >> @@ -2728,4 +2732,7 @@ void *ath6kl_wmi_init(struct ath6kl *devt);
> >> void ath6kl_wmi_shutdown(struct wmi *wmi);
> >> void ath6kl_wmi_reset(struct wmi *wmi);
> >
> >> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap);
> >> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx);
> >> +
> >> #endif /* WMI_H */
> >> --
> >> 2.14.1
> >
> >
> > From your answer to Kalle re: what hardware
> >
> >> I have tested this in an Atheros QCA6234. kmsg shows this about the fw=
:
> >
> >> ath6kl: ar6004 hw 3.0 sdio fw 3.5.0.604 api 1
> >> ath6kl: firmware supports: 64bit-rates,ap-inactivity-mins
> >
> > The firmware you're using is old. Mine for the QCA6234 is more advanced
> > than that and has the rsn-cap-override flag, but even the stock one in
> > linux-firmware is more up-to-date: 3.5.0.2356 api 3. I haven't run it
> > recently to see if it also has the rsn-cap-override flag, but it might.
> > Maybe you can try the current firmware to see if it solves your issue?
> This is hw 3.0, there is actually no ath6k/AR6004/hw3.0 folder in
> linux-firmware. I would appreciate pointers for more modern fw for
> this hardware version if you have them.
Ah. Silly me, I just looked at the highest number in linux-firmware.
You're right, there's no HW 3.0 in there. I know there's a publically
available firmware for HW 3.0 out there, because I have a note on it, but I
don't recall where I saw it as it's been years.
@Kalle - do you have a more recent official QCA drop for this chip? And if
so, can we get it into linux-firmware?
You never said who's module you're using. If it's a Laird SD/MSD/WB50NBT,
the firmware I use has the rsn-cap-override and is easy to get from them.
It should look like:
ar6004 hw 3.0 sdio fw 3.5.0.10011 api 5
firmware supports:
sched-scan,rsn-cap-override,sscan-match-list,rssi-scan-thold,tx-err-notify,=
sched-scan-v2,hb-poll,64bit-rates,no-ip-checksu
There possibly is a more current version than I have on-hand.
- Steve
--
Steve deRosier
Cal-Sierra Consulting
https://www.cal-sierra.com/
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YWxv
Hi Steve,
On Fri, Apr 27, 2018 at 5:47 PM, Steve deRosier <[email protected]> wrote:
> Hi Alfonso,
>
> On Thu, Apr 12, 2018 at 8:42 AM Alfonso Sánchez-Beato <
> [email protected]> wrote:
>
>> This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
>> is not present in the FW. The id of some WMI commands is also fixed
>> (there was an error in the enum order), and a function to set RSN caps
>> is added.
>
>> Signed-off-by: Alfonso Sánchez-Beato <[email protected]>
>> ---
>> drivers/net/wireless/ath/ath6kl/cfg80211.c | 21 ++++++---------------
>> drivers/net/wireless/ath/ath6kl/main.c | 10 +++-------
>> drivers/net/wireless/ath/ath6kl/wmi.c | 23 +++++++++++++++++++++++
>> drivers/net/wireless/ath/ath6kl/wmi.h | 15 +++++++++++----
>> 4 files changed, 43 insertions(+), 26 deletions(-)
>
>> diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c
> b/drivers/net/wireless/ath/ath6kl/cfg80211.c
>> index 2ba8cf3f38af..1b89c53d47e7 100644
>> --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
>> +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
>> @@ -2933,13 +2933,11 @@ static int ath6kl_start_ap(struct wiphy *wiphy,
> struct net_device *dev,
>> * advertise the same in beacon/probe response. Send
>> * the complete RSN IE capability field to firmware
>> */
>> - if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
>> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
>> - ar->fw_capabilities)) {
>> - res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
>> - WLAN_EID_RSN, WMI_RSN_IE_CAPB,
>> - (const u8 *) &rsn_capab,
>> - sizeof(rsn_capab));
>> + if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *)&rsn_capab)) {
>> + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "RSN caps %d\n",
> rsn_capab);
>> +
>> + res = ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
>> + rsn_capab);
>> vif->rsn_capab = rsn_capab;
>> if (res < 0)
>> return res;
>
> So, let me see if I understand this correctly. Original flow was:
>
> 1. get RSN capable from the beacon if one
> 2. if the firmware is capable of the override, set the IE else don't do
> anything
>
> New flow:
> 1. get RSN capable from the beacon if one
> 2. unconditionally send the rsn_cap WMI down
>
> So, what happens on a firmware that _does_ have the rsn-cap-override flag
> set? I'm guessing nothing good. Admittedly I haven't tried your patch on
> my platform.
>
> I think that simply ignoring the flag and using a WMI instead of setting
> the IE on all devices AR6002..AR6004 is likely going to cause problems for
> everyone else.
Admittedly, I have not a wide range of devices to test. This patch was
mostly an RFC to see if the issue is only for a particular fw revision
and to expose it for people that might find it useful. Note that I am
not the first person to hit this, see for instance
http://www.spinics.net/lists/linux-wireless/msg115085.html
>
>
>> @@ -3918,14 +3916,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
>> return -EINVAL;
>> }
>
>> - /*
>> - * Even if the fw has HT support, advertise HT cap only when
>> - * the firmware has support to override RSN capability, otherwise
>> - * 4-way handshake would fail.
>> - */
>> - if (!(ht &&
>> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
>> - ar->fw_capabilities))) {
>> + if (!ht) {
>
> Perhaps the comment isn't relevant if we're using the RSN WMI command on a
> device with the flag, but I'm willing to bet you neither tested it nor that
> the assumption is true. I'm guessing this change just broke the 4-way
> handshake for the majority of devices.
>
>> ath6kl_band_2ghz.ht_cap.cap = 0;
>> ath6kl_band_2ghz.ht_cap.ht_supported = false;
>> ath6kl_band_5ghz.ht_cap.cap = 0;
>> diff --git a/drivers/net/wireless/ath/ath6kl/main.c
> b/drivers/net/wireless/ath/ath6kl/main.c
>> index db95f85751e3..4e186f8b3950 100644
>> --- a/drivers/net/wireless/ath/ath6kl/main.c
>> +++ b/drivers/net/wireless/ath/ath6kl/main.c
>> @@ -579,13 +579,9 @@ static int ath6kl_commit_ch_switch(struct ath6kl_vif
> *vif, u16 channel)
>> * reconfigure any saved RSN IE capabilites in the beacon
> /
>> * probe response to stay in sync with the supplicant.
>> */
>> - if (vif->rsn_capab &&
>> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
>> - ar->fw_capabilities))
>> - ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
>> - WLAN_EID_RSN,
> WMI_RSN_IE_CAPB,
>> - (const u8 *)
> &vif->rsn_capab,
>> - sizeof(vif->rsn_capab));
>> + if (vif->rsn_capab)
>> + ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
>> + vif->rsn_capab);
>
>
> So, basically same comment as the first one.
>
>> return ath6kl_wmi_ap_profile_commit(ar->wmi,
> vif->fw_vif_idx,
>> &vif->profile);
>> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c
> b/drivers/net/wireless/ath/ath6kl/wmi.c
>> index 777acc564ac9..d7de9224d755 100644
>> --- a/drivers/net/wireless/ath/ath6kl/wmi.c
>> +++ b/drivers/net/wireless/ath/ath6kl/wmi.c
>> @@ -4168,3 +4168,26 @@ void ath6kl_wmi_shutdown(struct wmi *wmi)
>> kfree(wmi->last_mgmt_tx_frame);
>> kfree(wmi);
>> }
>> +
>> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap)
>> +{
>> + struct sk_buff *skb;
>> + struct wmi_rsn_cap_cmd *cmd;
>> +
>> + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
>> + if (!skb)
>> + return -ENOMEM;
>> +
>> + ath6kl_dbg(ATH6KL_DBG_WMI, "set_rsn_cap: 0x%04x\n", rsn_cap);
>> +
>> + cmd = (struct wmi_rsn_cap_cmd *)skb->data;
>> + cmd->rsn_cap = cpu_to_le16(rsn_cap);
>> +
>> + return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
> WMI_SET_RSN_CAP_CMDID,
>> + NO_SYNC_WMIFLAG);
>> +}
>> +
>> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx)
>> +{
>> + return ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_GET_RSN_CAP_CMDID);
>> +}
>> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h
> b/drivers/net/wireless/ath/ath6kl/wmi.h
>> index a60bb49fe920..011d4b6fb5ab 100644
>> --- a/drivers/net/wireless/ath/ath6kl/wmi.h
>> +++ b/drivers/net/wireless/ath/ath6kl/wmi.h
>> @@ -597,10 +597,6 @@ enum wmi_cmd_id {
>
>> WMI_GREENTX_PARAMS_CMDID,
>
>> - WMI_RTT_MEASREQ_CMDID,
>> - WMI_RTT_CAPREQ_CMDID,
>> - WMI_RTT_STATUSREQ_CMDID,
>> -
>> /* WPS Commands */
>> WMI_WPS_START_CMDID,
>> WMI_GET_WPS_STATUS_CMDID,
>> @@ -621,6 +617,10 @@ enum wmi_cmd_id {
>> WMI_RX_FILTER_COALESCE_FILTER_OP_CMDID,
>> WMI_RX_FILTER_SET_FRAME_TEST_LIST_CMDID,
>
>> + WMI_RTT_MEASREQ_CMDID,
>> + WMI_RTT_CAPREQ_CMDID,
>> + WMI_RTT_STATUSREQ_CMDID,
>> +
>> WMI_SEND_MGMT_CMDID,
>> WMI_BEGIN_SCAN_CMDID,
>
>> @@ -2533,6 +2533,10 @@ enum wmi_sync_flag {
>> END_WMIFLAG
>> };
>
>
> I can factually state that the above reordering of the commands is wrong
> for a 6003. The order in the WMI file is consistent for a 6003. Your
> reordering is consistent for a 6004. Now, the only commands affected by the
> reordering aren't utilized by the driver, other than your added get/set
> RSN_CAP_CMDIDs. But on a 6003, your now used WMI_SET_RSN_CAP_CMDID will
> trigger a WMI_GET_OPPPS_CMDID, which isn't what you want.
>
> I've encountered this issue a before - wmi code mismatch between the
> different firmwares and the driver. This is a limitation of the driver that
> probably should be resolved in some meaningful way. To date, it's been
> mitigated by the driver just not using the higher-numbered commands. But
> by "meaningful way" I don't include redefining command IDs in favor of one
> particular person's firmware and causing problems on the other 99% of
> devices out there.
Agreed. I do not have access to much information for the ath6k, so
this was more like a shot in the dark.
>
>> +struct wmi_rsn_cap_cmd {
>> + __le16 rsn_cap;
>> +} __packed;
>> +
>> enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi);
>> void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id
> ep_id);
>> int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb);
>> @@ -2728,4 +2732,7 @@ void *ath6kl_wmi_init(struct ath6kl *devt);
>> void ath6kl_wmi_shutdown(struct wmi *wmi);
>> void ath6kl_wmi_reset(struct wmi *wmi);
>
>> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap);
>> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx);
>> +
>> #endif /* WMI_H */
>> --
>> 2.14.1
>
>
> From your answer to Kalle re: what hardware
>
>> I have tested this in an Atheros QCA6234. kmsg shows this about the fw:
>
>> ath6kl: ar6004 hw 3.0 sdio fw 3.5.0.604 api 1
>> ath6kl: firmware supports: 64bit-rates,ap-inactivity-mins
>
> The firmware you're using is old. Mine for the QCA6234 is more advanced
> than that and has the rsn-cap-override flag, but even the stock one in
> linux-firmware is more up-to-date: 3.5.0.2356 api 3. I haven't run it
> recently to see if it also has the rsn-cap-override flag, but it might.
> Maybe you can try the current firmware to see if it solves your issue?
This is hw 3.0, there is actually no ath6k/AR6004/hw3.0 folder in
linux-firmware. I would appreciate pointers for more modern fw for
this hardware version if you have them.
>
> Thanks,
> - Steve
Thanks,
Alfonso
>
> --
> Steve deRosier
> Cal-Sierra Consulting
> https://www.cal-sierra.com/
Hi Alfonso,
On Thu, Apr 12, 2018 at 8:42 AM Alfonso S=C3=A1nchez-Beato <
[email protected]> wrote:
> This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
> is not present in the FW. The id of some WMI commands is also fixed
> (there was an error in the enum order), and a function to set RSN caps
> is added.
> Signed-off-by: Alfonso S=C3=A1nchez-Beato <alfonso.sanchez-beato@canonica=
l.com>
> ---
> drivers/net/wireless/ath/ath6kl/cfg80211.c | 21 ++++++---------------
> drivers/net/wireless/ath/ath6kl/main.c | 10 +++-------
> drivers/net/wireless/ath/ath6kl/wmi.c | 23 +++++++++++++++++++++++
> drivers/net/wireless/ath/ath6kl/wmi.h | 15 +++++++++++----
> 4 files changed, 43 insertions(+), 26 deletions(-)
> diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c
b/drivers/net/wireless/ath/ath6kl/cfg80211.c
> index 2ba8cf3f38af..1b89c53d47e7 100644
> --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
> +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
> @@ -2933,13 +2933,11 @@ static int ath6kl_start_ap(struct wiphy *wiphy,
struct net_device *dev,
> * advertise the same in beacon/probe response. Send
> * the complete RSN IE capability field to firmware
> */
> - if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> - ar->fw_capabilities)) {
> - res =3D ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
> - WLAN_EID_RSN, WMI_RSN_IE_CAPB=
,
> - (const u8 *) &rsn_capab,
> - sizeof(rsn_capab));
> + if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *)&rsn_capab)) {
> + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "RSN caps %d\n",
rsn_capab);
> +
> + res =3D ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
> + rsn_capab);
> vif->rsn_capab =3D rsn_capab;
> if (res < 0)
> return res;
So, let me see if I understand this correctly. Original flow was:
1. get RSN capable from the beacon if one
2. if the firmware is capable of the override, set the IE else don't do
anything
New flow:
1. get RSN capable from the beacon if one
2. unconditionally send the rsn_cap WMI down
So, what happens on a firmware that _does_ have the rsn-cap-override flag
set? I'm guessing nothing good. Admittedly I haven't tried your patch on
my platform.
I think that simply ignoring the flag and using a WMI instead of setting
the IE on all devices AR6002..AR6004 is likely going to cause problems for
everyone else.
> @@ -3918,14 +3916,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
> return -EINVAL;
> }
> - /*
> - * Even if the fw has HT support, advertise HT cap only when
> - * the firmware has support to override RSN capability, otherwise
> - * 4-way handshake would fail.
> - */
> - if (!(ht &&
> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> - ar->fw_capabilities))) {
> + if (!ht) {
Perhaps the comment isn't relevant if we're using the RSN WMI command on a
device with the flag, but I'm willing to bet you neither tested it nor that
the assumption is true. I'm guessing this change just broke the 4-way
handshake for the majority of devices.
> ath6kl_band_2ghz.ht_cap.cap =3D 0;
> ath6kl_band_2ghz.ht_cap.ht_supported =3D false;
> ath6kl_band_5ghz.ht_cap.cap =3D 0;
> diff --git a/drivers/net/wireless/ath/ath6kl/main.c
b/drivers/net/wireless/ath/ath6kl/main.c
> index db95f85751e3..4e186f8b3950 100644
> --- a/drivers/net/wireless/ath/ath6kl/main.c
> +++ b/drivers/net/wireless/ath/ath6kl/main.c
> @@ -579,13 +579,9 @@ static int ath6kl_commit_ch_switch(struct ath6kl_vif
*vif, u16 channel)
> * reconfigure any saved RSN IE capabilites in the beaco=
n
/
> * probe response to stay in sync with the supplicant.
> */
> - if (vif->rsn_capab &&
> - test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
> - ar->fw_capabilities))
> - ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
> - WLAN_EID_RSN,
WMI_RSN_IE_CAPB,
> - (const u8 *)
&vif->rsn_capab,
> - sizeof(vif->rsn_capab));
> + if (vif->rsn_capab)
> + ath6kl_wmi_set_rsn_cap(ar->wmi, vif->fw_vif_idx,
> + vif->rsn_capab);
So, basically same comment as the first one.
> return ath6kl_wmi_ap_profile_commit(ar->wmi,
vif->fw_vif_idx,
> &vif->profile);
> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c
b/drivers/net/wireless/ath/ath6kl/wmi.c
> index 777acc564ac9..d7de9224d755 100644
> --- a/drivers/net/wireless/ath/ath6kl/wmi.c
> +++ b/drivers/net/wireless/ath/ath6kl/wmi.c
> @@ -4168,3 +4168,26 @@ void ath6kl_wmi_shutdown(struct wmi *wmi)
> kfree(wmi->last_mgmt_tx_frame);
> kfree(wmi);
> }
> +
> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap)
> +{
> + struct sk_buff *skb;
> + struct wmi_rsn_cap_cmd *cmd;
> +
> + skb =3D ath6kl_wmi_get_new_buf(sizeof(*cmd));
> + if (!skb)
> + return -ENOMEM;
> +
> + ath6kl_dbg(ATH6KL_DBG_WMI, "set_rsn_cap: 0x%04x\n", rsn_cap);
> +
> + cmd =3D (struct wmi_rsn_cap_cmd *)skb->data;
> + cmd->rsn_cap =3D cpu_to_le16(rsn_cap);
> +
> + return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
WMI_SET_RSN_CAP_CMDID,
> + NO_SYNC_WMIFLAG);
> +}
> +
> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx)
> +{
> + return ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_GET_RSN_CAP_CMDID);
> +}
> diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h
b/drivers/net/wireless/ath/ath6kl/wmi.h
> index a60bb49fe920..011d4b6fb5ab 100644
> --- a/drivers/net/wireless/ath/ath6kl/wmi.h
> +++ b/drivers/net/wireless/ath/ath6kl/wmi.h
> @@ -597,10 +597,6 @@ enum wmi_cmd_id {
> WMI_GREENTX_PARAMS_CMDID,
> - WMI_RTT_MEASREQ_CMDID,
> - WMI_RTT_CAPREQ_CMDID,
> - WMI_RTT_STATUSREQ_CMDID,
> -
> /* WPS Commands */
> WMI_WPS_START_CMDID,
> WMI_GET_WPS_STATUS_CMDID,
> @@ -621,6 +617,10 @@ enum wmi_cmd_id {
> WMI_RX_FILTER_COALESCE_FILTER_OP_CMDID,
> WMI_RX_FILTER_SET_FRAME_TEST_LIST_CMDID,
> + WMI_RTT_MEASREQ_CMDID,
> + WMI_RTT_CAPREQ_CMDID,
> + WMI_RTT_STATUSREQ_CMDID,
> +
> WMI_SEND_MGMT_CMDID,
> WMI_BEGIN_SCAN_CMDID,
> @@ -2533,6 +2533,10 @@ enum wmi_sync_flag {
> END_WMIFLAG
> };
I can factually state that the above reordering of the commands is wrong
for a 6003. The order in the WMI file is consistent for a 6003. Your
reordering is consistent for a 6004. Now, the only commands affected by the
reordering aren't utilized by the driver, other than your added get/set
RSN_CAP_CMDIDs. But on a 6003, your now used WMI_SET_RSN_CAP_CMDID will
trigger a WMI_GET_OPPPS_CMDID, which isn't what you want.
I've encountered this issue a before - wmi code mismatch between the
different firmwares and the driver. This is a limitation of the driver that
probably should be resolved in some meaningful way. To date, it's been
mitigated by the driver just not using the higher-numbered commands. But
by "meaningful way" I don't include redefining command IDs in favor of one
particular person's firmware and causing problems on the other 99% of
devices out there.
> +struct wmi_rsn_cap_cmd {
> + __le16 rsn_cap;
> +} __packed;
> +
> enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi);
> void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id
ep_id);
> int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb);
> @@ -2728,4 +2732,7 @@ void *ath6kl_wmi_init(struct ath6kl *devt);
> void ath6kl_wmi_shutdown(struct wmi *wmi);
> void ath6kl_wmi_reset(struct wmi *wmi);
> +int ath6kl_wmi_set_rsn_cap(struct wmi *wmi, u8 if_idx, u16 rsn_cap);
> +int ath6kl_wmi_get_rsn_cap(struct wmi *wmi, u8 if_idx);
> +
> #endif /* WMI_H */
> --
> 2.14.1
From your answer to Kalle re: what hardware
> I have tested this in an Atheros QCA6234. kmsg shows this about the fw:
> ath6kl: ar6004 hw 3.0 sdio fw 3.5.0.604 api 1
> ath6kl: firmware supports: 64bit-rates,ap-inactivity-mins
The firmware you're using is old. Mine for the QCA6234 is more advanced
than that and has the rsn-cap-override flag, but even the stock one in
linux-firmware is more up-to-date: 3.5.0.2356 api 3. I haven't run it
recently to see if it also has the rsn-cap-override flag, but it might.
Maybe you can try the current firmware to see if it solves your issue?
Thanks,
- Steve
--
Steve deRosier
Cal-Sierra Consulting
https://www.cal-sierra.com/
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bG9nLg0KDQotLSANCkthbGxlIFZhbG8=
Alfonso Sánchez-Beato wrote:
> This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
> is not present in the FW. The id of some WMI commands is also fixed
> (there was an error in the enum order), and a function to set RSN caps
> is added.
>
> Signed-off-by: Alfonso Sánchez-Beato <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>
Steve, what do you think of this?
--
https://patchwork.kernel.org/patch/10338903/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
On Fri, Apr 13, 2018 at 12:48 PM, Kalle Valo <[email protected]> wrote:
>
> Alfonso Sánchez-Beato <[email protected]> writes:
>
> > This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
> > is not present in the FW. The id of some WMI commands is also fixed
> > (there was an error in the enum order), and a function to set RSN caps
> > is added.
> >
> > Signed-off-by: Alfonso Sánchez-Beato <[email protected]>
>
> What hardware and firmware version? Do note that ids can change between
> ath6kl firmware branches so even if it works for you it might break some
> other branch. That's why it's good to document the setup in the commit
> log.
I have tested this in an Atheros QCA6234. kmsg shows this about the fw:
ath6kl: ar6004 hw 3.0 sdio fw 3.5.0.604 api 1
ath6kl: firmware supports: 64bit-rates,ap-inactivity-mins
The fw file is AR6004/hw3.0/fw.ram.bin
>
> --
> Kalle Valo