[PATCH] cfg80211: propagate iftype HE 6 GHz capability

[PATCH] cfg80211: propagate iftype HE 6 GHz capability

[Rajkumar Manoharan]

Advertise per interface HE 6 GHz band capability to user space
which will be used to build IEs.

Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
---
 include/uapi/linux/nl80211.h | 3 +++
 net/wireless/nl80211.c       | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 9c0a912f1684..10dd250c7d6a 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3527,6 +3527,8 @@ enum nl80211_mpath_info {
  *     capabilities IE
  * @NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE: HE PPE thresholds information as
  *     defined in HE capabilities IE
+ * @NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAP: HE 6 GHz band capabilities as in HE
+ *     6 GHz band capabilities IE
  * @NL80211_BAND_IFTYPE_ATTR_MAX: highest band HE capability attribute currently
  *     defined
  * @__NL80211_BAND_IFTYPE_ATTR_AFTER_LAST: internal use
@@ -3539,6 +3541,7 @@ enum nl80211_band_iftype_attr {
 	NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
 	NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
 	NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
+	NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAP,
 
 	/* keep last */
 	__NL80211_BAND_IFTYPE_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index bcd7a452e8b1..af9f296ed2af 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1607,6 +1607,13 @@ nl80211_send_iftype_data(struct sk_buff *msg,
 		    nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
 			    sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
 			return -ENOBUFS;
+
+		if (he_cap->has_he_6ghz) {
+			if (nla_put_u16(msg,
+					NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAP,
+					he_cap->he_6ghz.cap))
+				return -ENOBUFS;
+		}
 	}
 
 	return 0;
-- 
2.7.4

Re: [PATCH] cfg80211: propagate iftype HE 6 GHz capability

[Arend Van Spriel]

On 5/26/2020 6:31 AM, Rajkumar Manoharan wrote:
> Advertise per interface HE 6 GHz band capability to user space
> which will be used to build IEs.

I am missing the bigger picture here. It should really be determined by 
the band in which the interface type is operating, right? Can you refer 
to patches on the hostap mailing list relying on this one?

Regards,
Arend

Re: [PATCH] cfg80211: propagate iftype HE 6 GHz capability

[Rajkumar Manoharan]

On 2020-05-26 01:10, Arend Van Spriel wrote:
> On 5/26/2020 6:31 AM, Rajkumar Manoharan wrote:
>> Advertise per interface HE 6 GHz band capability to user space
>> which will be used to build IEs.
> 
> I am missing the bigger picture here. It should really be determined
> by the band in which the interface type is operating, right? Can you
> refer to patches on the hostap mailing list relying on this one?
> 
HE capabilities are exposed to user space via NL80211_BAND_IFTYPE_ATTR_*
as each iftype has different set of capabilities. My last series of 
hostapd
6 GHz changes are depending on HT/VHT capability for IE and config 
validation.
Planning to get rid of such dependency by announcing 6 GHz capability by 
driver
and use it in hostapd. Will post hostapd changes sooner.

-Rajkumar