diff mbox

[RESEND,15/16] wcn36xx: don't pad beacons for mesh

Message ID 1459287672-3324-1-git-send-email-bjorn.andersson@linaro.org (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show

Commit Message

Bjorn Andersson March 29, 2016, 9:41 p.m. UTC
From: Jason Mobarak <jam@cozybit.com>

Patch "wcn36xx: Pad TIM PVM if needed" has caused a regression in mesh
beaconing.  The field tim_off is always 0 for mesh mode, and thus
pvm_len (referring to the TIM length field) and pad are both incorrectly
calculated.  Thus, msg_body.beacon_length is incorrectly calculated for
mesh mode. Fix this.

Fixes: 8ad99a4e3ee5 ("wcn36xx: Pad TIM PVM if needed")
Signed-off-by: Jason Mobarak <jam@cozybit.com>
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Resend this single patch with included Fixes tag.

 drivers/net/wireless/ath/wcn36xx/smd.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Bjorn Andersson March 29, 2016, 9:44 p.m. UTC | #1
On Tue 29 Mar 14:41 PDT 2016, Bjorn Andersson wrote:

> From: Jason Mobarak <jam@cozybit.com>
> 
> Patch "wcn36xx: Pad TIM PVM if needed" has caused a regression in mesh
> beaconing.  The field tim_off is always 0 for mesh mode, and thus
> pvm_len (referring to the TIM length field) and pad are both incorrectly
> calculated.  Thus, msg_body.beacon_length is incorrectly calculated for
> mesh mode. Fix this.
> 
> Fixes: 8ad99a4e3ee5 ("wcn36xx: Pad TIM PVM if needed")
> Signed-off-by: Jason Mobarak <jam@cozybit.com>
> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> 
> Resend this single patch with included Fixes tag.
> 

Sorry for the spam, I read the git log incorrectly. The patch referred
to is part of this series, so the sha1 is bogus.

Regards,
Bjorn

>  drivers/net/wireless/ath/wcn36xx/smd.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
> index a57d158298a1..b1bdc229e560 100644
> --- a/drivers/net/wireless/ath/wcn36xx/smd.c
> +++ b/drivers/net/wireless/ath/wcn36xx/smd.c
> @@ -1410,6 +1410,11 @@ int wcn36xx_smd_send_beacon(struct wcn36xx *wcn, struct ieee80211_vif *vif,
>  
>  	pvm_len = skb_beacon->data[tim_off + 1] - 3;
>  	pad = TIM_MIN_PVM_SIZE - pvm_len;
> +
> +	/* Padding is irrelevant to mesh mode since tim_off is always 0. */
> +	if (vif->type == NL80211_IFTYPE_MESH_POINT)
> +		pad = 0;
> +
>  	msg_body.beacon_length = skb_beacon->len + pad;
>  	/* TODO need to find out why + 6 is needed */
>  	msg_body.beacon_length6 = msg_body.beacon_length + 6;
> -- 
> 2.5.0
> 
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diff mbox

Patch

diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index a57d158298a1..b1bdc229e560 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -1410,6 +1410,11 @@  int wcn36xx_smd_send_beacon(struct wcn36xx *wcn, struct ieee80211_vif *vif,
 
 	pvm_len = skb_beacon->data[tim_off + 1] - 3;
 	pad = TIM_MIN_PVM_SIZE - pvm_len;
+
+	/* Padding is irrelevant to mesh mode since tim_off is always 0. */
+	if (vif->type == NL80211_IFTYPE_MESH_POINT)
+		pad = 0;
+
 	msg_body.beacon_length = skb_beacon->len + pad;
 	/* TODO need to find out why + 6 is needed */
 	msg_body.beacon_length6 = msg_body.beacon_length + 6;