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[1/3] wifi: cfg80211: Add support to get EMLSR capabilities of non-AP MLD

Message ID 20250107174802.1793252-2-quic_ramess@quicinc.com (mailing list archive)
State New
Delegated to: Johannes Berg
Headers show
Series wifi: cfg80211: update EML capabilities of an ML Station | expand

Commit Message

Rameshkumar Sundaram Jan. 7, 2025, 5:48 p.m. UTC 
From: Ramasamy Kaliappan <quic_rkaliapp@quicinc.com>

The Enhanced multi-link single-radio (EMLSR) operation allows a non-AP MLD
with multiple receive chains to listen on one or more EMLSR links when the
corresponding non-AP STA(s) affiliated with the non-AP MLD is (are) in
the awake state. [IEEE 802.11be-2024, (35.3.17 Enhanced multi-link
single-radio (EMLSR) operation)]

An MLD which intends to enable EMLSR operations will set the EML
Capabilities Present subfield to 1 and shall set the EMLSR Support
subfield in the Common Info field of the Basic Multi-Link element to 1 in
all Management frames that include the Basic Multi-Link element except
Authentication frames. EML capabilities contains information such as
EML Transition timeout, Padding delay and Transition delay. These fields
needs to updated to drivers to trigger EMLSR operation and to transmit and
receive initial control frame and data frames.

Add support to receive EML Capabilities subfield that non-AP MLD
advertises during (re)association request and send it to underlying
drivers during ADD/SET station.

Signed-off-by: Ramasamy Kaliappan <quic_rkaliapp@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
---
 include/net/cfg80211.h | 2 ++
 net/wireless/nl80211.c | 8 ++++++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 0a48f47a77dc..84d2a0b25144 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1756,6 +1756,7 @@  struct cfg80211_ttlm_params {
  * @supported_oper_classes_len: number of supported operating classes
  * @support_p2p_ps: information if station supports P2P PS mechanism
  * @airtime_weight: airtime scheduler weight for this station
+ * @eml_cap: EML capabilities of this station
  * @link_sta_params: link related params.
  */
 struct station_parameters {
@@ -1780,6 +1781,7 @@  struct station_parameters {
 	u8 supported_oper_classes_len;
 	int support_p2p_ps;
 	u16 airtime_weight;
+	u16 eml_cap;
 	struct link_station_parameters link_sta_params;
 };
 
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8789d8b73f0f..41abbdf3e571 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -818,6 +818,7 @@  static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 	[NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 	[NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 	[NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
+	[NL80211_ATTR_EML_CAPABILITY] = { .type = NLA_U16 },
 	[NL80211_ATTR_PUNCT_BITMAP] =
 		NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 
@@ -7437,6 +7438,10 @@  static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 		params.link_sta_params.he_6ghz_capa =
 			nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
 
+	if (info->attrs[NL80211_ATTR_EML_CAPABILITY])
+		params.eml_cap =
+			nla_get_u16(info->attrs[NL80211_ATTR_EML_CAPABILITY]);
+
 	if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
 		params.airtime_weight =
 			nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
@@ -7595,6 +7600,9 @@  static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 		}
 	}
 
+	if (info->attrs[NL80211_ATTR_EML_CAPABILITY])
+		params.eml_cap = nla_get_u16(info->attrs[NL80211_ATTR_EML_CAPABILITY]);
+
 	if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
 		params.link_sta_params.he_6ghz_capa =
 			nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);