[PATCH v2 02/22] nl80211: advertise supported channel width in S1G

Thomas Pedersen
2020-08-31T20:56:12Z

S1G supports 5 channel widths: 1, 2, 4, 8, and 16. One
channel width is allowed per frequency in each operating
class, so it makes more sense to advertise the specific
channel width allowed.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
include/net/cfg80211.h | 15 +++++++++++++++
include/uapi/linux/nl80211.h | 15 +++++++++++++++
net/wireless/nl80211.c | 15 +++++++++++++++
3 files changed, 45 insertions(+)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c9bce9bba511..e4d4fbcb2edc 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -96,6 +96,16 @@ struct wiphy;
* @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
* on this channel.
* @IEEE80211_CHAN_NO_HE: HE operation is not permitted on this channel.
+ * @IEEE80211_CHAN_1MHZ: 1 MHz bandwidth is permitted
+ * on this channel.
+ * @IEEE80211_CHAN_2MHZ: 2 MHz bandwidth is permitted
+ * on this channel.
+ * @IEEE80211_CHAN_4MHZ: 4 MHz bandwidth is permitted
+ * on this channel.
+ * @IEEE80211_CHAN_8MHZ: 8 MHz bandwidth is permitted
+ * on this channel.
+ * @IEEE80211_CHAN_16MHZ: 16 MHz bandwidth is permitted
+ * on this channel.
*
*/
enum ieee80211_channel_flags {
@@ -113,6 +123,11 @@ enum ieee80211_channel_flags {
IEEE80211_CHAN_NO_20MHZ = 1<<11,
IEEE80211_CHAN_NO_10MHZ = 1<<12,
IEEE80211_CHAN_NO_HE = 1<<13,
+ IEEE80211_CHAN_1MHZ = 1<<14,
+ IEEE80211_CHAN_2MHZ = 1<<15,
+ IEEE80211_CHAN_4MHZ = 1<<16,
+ IEEE80211_CHAN_8MHZ = 1<<17,
+ IEEE80211_CHAN_16MHZ = 1<<18,
};

#define IEEE80211_CHAN_NO_HT40 \
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 0584e0d349f0..4e119c6afa31 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3737,6 +3737,16 @@ enum nl80211_wmm_rule {
* @NL80211_FREQUENCY_ATTR_NO_HE: HE operation is not allowed on this channel
* in current regulatory domain.
* @NL80211_FREQUENCY_ATTR_OFFSET: frequency offset in KHz
+ * @NL80211_FREQUENCY_ATTR_1MHZ: 1 MHz operation is allowed
+ * on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_2MHZ: 2 MHz operation is allowed
+ * on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_4MHZ: 4 MHz operation is allowed
+ * on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_8MHZ: 8 MHz operation is allowed
+ * on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_16MHZ: 16 MHz operation is allowed
+ * on this channel in current regulatory domain.
* @NL80211_FREQUENCY_ATTR_MAX: highest frequency attribute number
* currently defined
* @__NL80211_FREQUENCY_ATTR_AFTER_LAST: internal use
@@ -3768,6 +3778,11 @@ enum nl80211_frequency_attr {
NL80211_FREQUENCY_ATTR_WMM,
NL80211_FREQUENCY_ATTR_NO_HE,
NL80211_FREQUENCY_ATTR_OFFSET,
+ NL80211_FREQUENCY_ATTR_1MHZ,
+ NL80211_FREQUENCY_ATTR_2MHZ,
+ NL80211_FREQUENCY_ATTR_4MHZ,
+ NL80211_FREQUENCY_ATTR_8MHZ,
+ NL80211_FREQUENCY_ATTR_16MHZ,

/* keep last */
__NL80211_FREQUENCY_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 52a35e788547..7da4d84bcc1a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1010,6 +1010,21 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
+ goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
+ goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
+ goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
+ goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
+ goto nla_put_failure;
}

if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
--
2.20.1