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BACKPORT: cfg80211: add and expose HE 6 GHz band capabilities

Browse source 
These capabilities cover what would otherwise be transported
in HT/VHT capabilities, but only a subset thereof that is
actually needed on 6 GHz with HE already present. Expose the
capabilities to userspace, drivers are expected to set them
as using the 6 GHz band (currently) requires HE capability.

Bug: 163110886

Link: https://lore.kernel.org/r/20200528213443.244cd5cb9db8.Icd8c773277a88c837e7e3af1d4d1013cc3b66543@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Change-Id: I08e42cb07c3cb1faacb325888ca77bcd2c91507b
(cherry picked from commit 223952177296c34d9c8de9cde33204caffe55725)
Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johannes Berg 2020-05-28 21:34:31 +02:00 • committed by Greg Kroah-Hartman
commit 9a579df196
3 changed files with 14 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/net/cfg80211.h
View file

@ -339,10 +339,13 @@ struct ieee80211_sta_he_cap {
*
* @types_mask: interface types mask
* @he_cap: holds the HE capabilities
* @he_6ghz_capa: HE 6 GHz capabilities, must be filled in for a
* 6 GHz band channel (and 0 may be valid value).
*/
struct ieee80211_sband_iftype_data {
u16 types_mask;
struct ieee80211_sta_he_cap he_cap;
struct ieee80211_he_6ghz_capa he_6ghz_capa;
};
/**

3
include/uapi/linux/nl80211.h
View file

@ -3520,6 +3520,8 @@ enum nl80211_mpath_info {
* defined in HE capabilities IE
* @NL80211_BAND_IFTYPE_ATTR_MAX: highest band HE capability attribute currently
* defined
* @NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA: HE 6GHz band capabilities (__le16),
* given for all 6 GHz band channels
* @__NL80211_BAND_IFTYPE_ATTR_AFTER_LAST: internal use
*/
enum nl80211_band_iftype_attr {
@ -3530,6 +3532,7 @@ 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_CAPA,
/* keep last */
__NL80211_BAND_IFTYPE_ATTR_AFTER_LAST,

9
net/wireless/nl80211.c
View file

@ -1574,6 +1574,7 @@ static int nl80211_send_coalesce(struct sk_buff *msg,
static int
nl80211_send_iftype_data(struct sk_buff *msg,
const struct ieee80211_supported_band *sband,
const struct ieee80211_sband_iftype_data *iftdata)
{
const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
@ -1597,6 +1598,12 @@ nl80211_send_iftype_data(struct sk_buff *msg,
return -ENOBUFS;
}
if (sband->band == NL80211_BAND_6GHZ &&
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
sizeof(iftdata->he_6ghz_capa),
&iftdata->he_6ghz_capa))
return -ENOBUFS;
return 0;
}
@ -1645,7 +1652,7 @@ static int nl80211_send_band_rateinfo(struct sk_buff *msg,
if (!iftdata)
return -ENOBUFS;
err = nl80211_send_iftype_data(msg,
err = nl80211_send_iftype_data(msg, sband,
&sband->iftype_data[i]);
if (err)
return err;