<div dir="ltr"><div>The unfortunate detail is that adhoc mode is not especially favored by many commercial vendors (Qualcomm included), and a prevailing opinion among them is that the IEEE 802.11 spec for adhoc in particular is inadequate for modern implementation. Indeed, in lieu of the electromagnetic calisthenics involved in doing MIMO under 802.11ac (use which channels? why, ALL of them!), they readily can jump to the conclusion including adhoc support would result in sufficient performance, so they won't do it.<br>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jul 28, 2014 at 3:09 PM, Griffin Boyce <span dir="ltr"><<a href="mailto:griffin@cryptolab.net" target="_blank">griffin@cryptolab.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Yes, it seems quite strange that they would shoot themselves in the foot like that. I'm withholding judgment in the absence of more information.<span class="HOEnZb"><font color="#888888"><br>
<br>
~ Griffin</font></span><div><div class="h5"><br><br><div class="gmail_quote">On July 26, 2014 5:54:45 PM EDT, Ben West <<a href="mailto:ben@gowasabi.net" target="_blank">ben@gowasabi.net</a>> wrote:<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><div><div>It's odd then that IBSS-related patches have submitted to ath10k this year:<br><a href="http://lists.infradead.org/pipermail/ath10k/2014-February/001159.html" target="_blank">http://lists.infradead.org/pipermail/ath10k/2014-February/001159.html</a><br>
<br></div>Likewise, the ath10k driver page doesn't mention the absence of IBSS/adhoc support (which one would expect to be a rather large omission worth pointing out):<br></div><a href="http://wireless.kernel.org/en/users/Drivers/ath10k" target="_blank">http://wireless.kernel.org/en/users/Drivers/ath10k</a><br>
<div><div><div><br></div><div>Looks like the difference arose b/w versions 999.999.0.x and 10.1.x of the (closed-source?) firmware:<br><a href="http://wireless.kernel.org/en/users/Drivers/ath10k/firmware" target="_blank">http://wireless.kernel.org/en/users/Drivers/ath10k/firmware</a><br>
<br></div></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, Jul 26, 2014 at 3:54 PM, Josh King <span dir="ltr"><<a href="mailto:jking@opentechinstitute.org" target="_blank">jking@opentechinstitute.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">No, not yet. Mostly just being facetious. However, I am hoping that this<br>
isn't a trend for the next generation of wifi chipsets going forward.<br>
<div><br>
On 07/26/2014 11:30 AM, Griffin Boyce wrote:<br>
</div><div><div>> *snicker*<br>
><br>
> Now, now, let's not let our emotions get the better of us. I'm sure that<br>
> the other Aetheros chipsets are plenty good ;)<br>
><br>
><br>
> On July 25, 2014 10:21:24 PM EDT, Josh King<br>
> <<a href="mailto:jking@opentechinstitute.org" target="_blank">jking@opentechinstitute.org</a>> wrote:<br>
><br>
> *Flips table*<br>
><br>
><br>
><br>
> On July 25, 2014 7:53:12 PM EDT, Will Hawkins<br>
> <<a href="mailto:hawkinsw@opentechinstitute.org" target="_blank">hawkinsw@opentechinstitute.org</a>> wrote:<br>
><br>
> It looks like the ath10k does not support IBSS.<br>
><br>
> Will<br>
><br>
><br>
> -------- Original Message --------<br>
> Subject: [PATCH] ath10k: don't advertise IBSS iftype for 10.x<br>
> Date: Wed, 23 Jul 2014 11:58:09 +0200<br>
> From: Michal Kazior <<a href="mailto:michal.kazior@tieto.com" target="_blank">michal.kazior@tieto.com</a>><br>
> To: <a href="mailto:ath10k@lists.infradead.org" target="_blank">ath10k@lists.infradead.org</a><br>
> CC: <a href="mailto:linux-wireless@vger.kernel.org" target="_blank">linux-wireless@vger.kernel.org</a>, Michal Kazior <<a href="mailto:michal.kazior@tieto.com" target="_blank">michal.kazior@tieto.com</a>><br>
><br>
> The 10.x firmware does not support IBSS mode at<br>
> all. It can't beacon and it crashes when trying to<br>
> scan.<br>
><br>
> Signed-off-by: Michal Kazior <<a href="mailto:michal.kazior@tieto.com" target="_blank">michal.kazior@tieto.com</a>><br>
> ---<br>
> drivers/net/wireless/ath/ath10k/mac.c | 3 ++-<br>
> 1 file changed, 2 insertions(+), 1 deletion(-)<br>
><br>
> diff --git a/drivers/net/wireless/ath/ath10k/mac.c<br>
> b/drivers/net/wireless/ath/ath10k/mac.c<br>
> index 3f9afaa..5122d1b 100644<br>
> --- a/drivers/net/wireless/ath/ath10k/mac.c<br>
> +++ b/drivers/net/wireless/ath/ath10k/mac.c<br>
> @@ -4700,7<br>
> +4700,6 @@ int ath10k_mac_register(struct ath10k *ar)<br>
><br>
> ar->hw->wiphy->interface_modes =<br>
> BIT(NL80211_IFTYPE_STATION) |<br>
> - BIT(NL80211_IFTYPE_ADHOC) |<br>
> BIT(NL80211_IFTYPE_AP);<br>
><br>
> if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {<br>
> @@ -4770,6 +4769,8 @@ int ath10k_mac_register(struct ath10k *ar)<br>
> ar->hw->wiphy->iface_combinations = ath10k_if_comb;<br>
> ar->hw->wiphy->n_iface_combinations =<br>
> ARRAY_SIZE(ath10k_if_comb);<br>
> +<br>
> + ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);<br>
> }<br>
><br>
> ar->hw->netdev_features = NETIF_F_HW_CSUM;<br>
><br>
><br>
><br>
> --<br>
> Sent from my tracking device. Please excuse brevity and cat photos.<br>
<br>
</div></div><div>--<br>
Josh King<br>
Lead Technologist<br>
The Open Technology Institute<br>
</div><a href="http://opentechinstitute.org" target="_blank">http://opentechinstitute.org</a><br>
<div><div>PGP Fingerprint: 8269 ED6F EA3B 7D78 F074 1E99 2FDA 4DA1 69AE 4999<br>
<br>
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-- <br>
Sent from my tracking device. Please excuse brevity and cat photos.</div></div></div></blockquote></div><br><br clear="all"><br>-- <br>Ben West<div><a href="http://gowasabi.net" target="_blank">http://gowasabi.net</a><br>
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