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Mon, 3 Mar 2025 22:19:02 GMT Received: from hu-ramess-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 3 Mar 2025 14:19:00 -0800 From: Rameshkumar Sundaram To: CC: , , "Ramasamy Kaliappan" , Rameshkumar Sundaram Subject: [PATCH wireless-next v3 1/4] wifi: cfg80211: Add support to get EMLSR capabilities of non-AP MLD Date: Tue, 4 Mar 2025 03:48:40 +0530 Message-ID: <20250303221843.1809753-2-quic_ramess@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250303221843.1809753-1-quic_ramess@quicinc.com> References: <20250303221843.1809753-1-quic_ramess@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: y8mN1Bpjf1DK-RpjdWGGHm1zNQoyghWk X-Proofpoint-GUID: y8mN1Bpjf1DK-RpjdWGGHm1zNQoyghWk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-03_11,2025-03-03_04,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 impostorscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2503030173 From: Ramasamy Kaliappan 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 Signed-off-by: Rameshkumar Sundaram --- 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]);