From: Ramasamy Kaliappan <quic_rkaliapp@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@xxxxxxxxxxx>
---
include/net/cfg80211.h | 5 +++++
net/wireless/nl80211.c | 15 ++++++++++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 6b170a8d086c..43343392878a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1756,6 +1756,9 @@ 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_present: Specifies if EML capabilities field (@eml_cap) is
+ * present/updated
+ * @eml_cap: EML capabilities of this station
* @link_sta_params: link related params.
*/
struct station_parameters {
@@ -1780,6 +1783,8 @@ struct station_parameters {
u8 supported_oper_classes_len;
int support_p2p_ps;
u16 airtime_weight;
+ bool eml_cap_present;
+ u16 eml_cap;
struct link_station_parameters link_sta_params;
};
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2c4e06610a79..a9a067d4a25a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -833,6 +833,7 @@ 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),
@@ -7095,7 +7096,8 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
if (params->ext_capab || params->link_sta_params.ht_capa ||
params->link_sta_params.vht_capa ||
params->link_sta_params.he_capa ||
- params->link_sta_params.eht_capa)
+ params->link_sta_params.eht_capa ||
+ params->eml_cap_present)
return -EINVAL;
if (params->sta_flags_mask & BIT(NL80211_STA_FLAG_SPP_AMSDU))
return -EINVAL;
@@ -7462,6 +7464,12 @@ 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_present = true;
+ 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]);
@@ -7620,6 +7628,11 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
}
}
+ if (info->attrs[NL80211_ATTR_EML_CAPABILITY]) {
+ params.eml_cap_present = true;
+ 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]);
--
2.34.1
