On Tue 29 Mar 14:41 PDT 2016, Bjorn Andersson wrote:
> From: Jason Mobarak <jam@xxxxxxxxxxx>
>
> 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@xxxxxxxxxxx>
> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@xxxxxxxxxxx>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
>
> 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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