From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FDE543DA2E for ; Mon, 7 Sep 2026 20:33:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788813211; cv=none; b=TRtUoUpM2uokLPnBuFnO+mYYEA/oaxSryU3fMj1e0cdRx/lj7YuI3TZqzEgTFPsRZ6JEolbtlcxgyn+2Ki26Jp6+Qjx69QhSFpaTHwQXkKHCbi70XstUAF0aQbGWO1tGS3h04J0+qa77UCeF+dNIx/HAASw9VoVndn+hB2w0wOg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788813211; c=relaxed/simple; bh=vGFJQ6aAodKhtzS21oPWEsRImbjCMwfBF99koJOYdiM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=phoiiUoG4fqXQH73OCFlqggcIKvExE6ntf/LFlkEj2t+v8zPUUQfr+PsLQLdrsbZ0StPOsEzceQwwmW5I5o/j1GdB459+PBUqWhNwxnygNpM9DgYTPN74N4T3JsfAo38mVf+sxos42+wUDdM/dtG9cebkkz7ybSOaL3H3Dn2rKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=ZiGbn6se; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=QA3uUY7y; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="ZiGbn6se"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="QA3uUY7y" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 687H7g5a1642016 for ; Mon, 7 Sep 2026 20:33:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= tmSBOtvSp+Gmy3pqLBjim1lUAAw6sE0lZZQQfu5q2wE=; b=ZiGbn6segsoLakw4 y4HXVWYxLiKdfZtKxyeVKoWm5rUTQ1Fq9A4fVKo+E1+U+R/qQDHVMlP5XNT7eFde 4zLO1/JSHJGSRsb8JtUU1GrhAaC/elb0U/tXbfDXfkxw+mfdsxSzXXx/8swt0Bfm 0pJL3z/+cxKT6BIGVdQoh2F5uM0j2ewWnZwF/X7WBcaqGCdHprIeZUZtUlxJJXNz 1qluEfE5Z1hVTmgY54Cb75tzNWLUipgiTdiqhjVGG9ps2lT5sKiDFlfbaPFKs7n5 TVyJOokJ8xjnoNGc6qXo3Iwc4Xvbsn0jb0x0ZSnjMCmhTJUulH+H9IuHKJrNUxk/ oCHH3g== Received: from mail-pj1-f70.google.com (mail-pj1-f70.google.com [209.85.216.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4ghruaaxc2-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 07 Sep 2026 20:33:28 +0000 (GMT) Received: by mail-pj1-f70.google.com with SMTP id 98e67ed59e1d1-38f57e31b6eso256833a91.1 for ; Mon, 07 Sep 2026 13:33:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1788813208; x=1789418008; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=tmSBOtvSp+Gmy3pqLBjim1lUAAw6sE0lZZQQfu5q2wE=; b=QA3uUY7yFSCFR8YAa+Bq4qdNAY+muwZjn/YDHzFj67iQNzWgrF3zCEkoimJazssqZK elH8tiftEbeMjV5BV/yBWSMir/j5E1C4HBZDJnwacNZbkcHw1pEuN6oit7oFGS3AxMaZ vsLnvDYkelfKS8bGWJIfYVvleJ0pwQ4HI8yIiym+5WQWlSP68SR9Qw/K05VdqBPdryFR TvUrbbModxJvuC4SmBdgPz3ji2QdFioTeExu4vODKIytuSuTo8FYmakn7AsJpC3MndrV Vfsm2ACL/KP464LwgDdO3KAPOCG9Sx+MdjL/rAVyoB0QPBMPSnNjBJMaRzZa6naRSCW3 12qw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788813208; x=1789418008; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=tmSBOtvSp+Gmy3pqLBjim1lUAAw6sE0lZZQQfu5q2wE=; b=GcycnybfB77PZ+MVeTJIVYfogpGypYqBXMBXaUHcPSlopAIt0lB0r4GKRkY1oXv6U7 WEAfeMvJzHlTrlrxKOVP2QvNWbwXmKbJ0g17EzBdgEPDy0hRVs4ehspiV1qjPfbeYw8j bXkQ561SttDqqw6TkPVQXDwjmSVLUXQrK7HG8T1xltkvpRNSZ/fkMtTU4nDX3VdPltnN XBag1lZnBSSZMv2lf3dd/sblkedluptsivKJ2CsrfRnZ60f3gkuo7olUtEhPQErulqUe Y3O7x7LU2nBBiC6vEJAlkm77WM/wbKZrZSdtU9XrHR+OZlRGcXYw854J8KQ4mCOrg2/i i6iw== X-Forwarded-Encrypted: i=1; AKwUvBzsCUaDgjui7Bibl8uVyPxOfavfI1K2IcZRMHAEEjLAy1ENsqcoh8kUBqRIY+FvGgXham5ESmqS6bg6Y/dzsA==@vger.kernel.org X-Gm-Message-State: AFuF++l0otVNW0tRjDl8gC/WXuIApECHxcfz1JrwAORSOanUzjROi0KI EDxPhYlcFDy3lEYQPjOb48RVjt4H0fmkah/cc1PAaabS7n/MYNxSwt2aC3G62y/lPidmsSs9sAP Nn5/u/N5X4jeQxJXQ85BTjddZZsG0lDY0jPWV2SdtdOp5rbYjOu5bnWO+oN60/D8yyaP8 X-Gm-Gg: AYBFou1wKpdMpzDzulSesy9IPf+9wKZKOvrowI41cLa5tfJdQHbuCqjbx0x3pW7kUXi meqxDSRxr59rjv3KbpttquBLaZgTHZwv4gOezkDvFW6cnfs0+Rkor5eOcannr8BKEET8aR3vsK4 WHydujRG7rzUWxlb1YD7qwQyFYOKwG7bGkYy0Yy0pZeJKjZ1qa8PmKrzFyoavlgXmnRy6qy+PK1 0jlFbDEpfr3zyDLrhCnoo9psiZQWwWTio92TOQkrqKExiBmrXeqDo3S2Fu3ecKE5oVJmQsA4Q6A bdWu1DPWu3L+s7oFqOWMzf/5Ko2JOcavNw35f3B0TJMtqyswnhfSctPV/d9/zpAvIp1HCy0VP88 rSoAQs1U3SbKrZx2y/0y6THMJ5eCyII1vnsV80fFCoHOlCNwrHerIpWr/mVEiCMoStKBd8y/ESZ qtgDS0B/1KRq4bHGSxH4pCGw== X-Received: by 2002:a17:90b:1dc3:b0:398:d6f4:c61a with SMTP id 98e67ed59e1d1-39b26207ee4mr38263434a91.17.1788813208189; Mon, 07 Sep 2026 13:33:28 -0700 (PDT) X-Received: by 2002:a17:90b:1dc3:b0:398:d6f4:c61a with SMTP id 98e67ed59e1d1-39b26207ee4mr38263380a91.17.1788813207672; Mon, 07 Sep 2026 13:33:27 -0700 (PDT) Received: from hu-pooventh-blr.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com. [103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339af25062sm47841297eec.16.2026.09.07.13.33.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2026 13:33:27 -0700 (PDT) From: Pooventhiran G Date: Tue, 08 Sep 2026 01:59:13 +0530 Subject: [PATCH wireless-next 04/18] wifi: cfg80211/mac80211: Configure AP with SMD capabilities Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260908-smd-v1-4-65ad4ab30fbd@oss.qualcomm.com> References: <20260908-smd-v1-0-65ad4ab30fbd@oss.qualcomm.com> In-Reply-To: <20260908-smd-v1-0-65ad4ab30fbd@oss.qualcomm.com> To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Johannes Berg Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Pooventhiran G X-Mailer: b4 0.14.3 X-Proofpoint-ORIG-GUID: CyTmWU81ZvShBAQtnpW2RAjdC9LoMf0D X-Authority-Analysis: v=2.4 cv=U+aiy+ru c=1 sm=1 tr=0 ts=6a9f1f98 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=56q9xwJp3_aMvtWITrUA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: CyTmWU81ZvShBAQtnpW2RAjdC9LoMf0D X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA3MDIyNiBTYWx0ZWRfX+MGj1YM+0XXP 0tmTrcKVpx07UbztI3XBc/N5Tng7mvI+4Ix2y0y3IxSmlS0sStBinRzQ+kXTW+b+46gC9bU8CFO eVo/P/BvK1jK834VifveTCQgJpxCaGY= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA3MDIyNiBTYWx0ZWRfX6fjyyeJ5JwRh uCcHwxj6x0ucJfhIAv+1ijXJWniRaZS2xhJGaA7Yprjv0tonoGkv1gtVpdHy6kRxhanqG8a/wFC CpWK9n/lJo1jtBTko6+4knBk5FU0xMi5TyUue5isZDTvFtoqB5rTxAtjVax3J3NtXfMqqIPrPCm RKeESwWGmRCAkj+bgkqQGU8OLp9AVIOEXnOTIszsQkrDOfw1Fbg/HGXL6rX97YuJIZYGOVn5+y5 c5sLUPW5tmmstDta1bx7N0BlR2y3WPOYqABMPKMgK69roMJtEgqR+lLDW6PIuq4WELBHOwbBd8b 9I9ocmV3KwI3XMfSxlmjtGYKidzW+Rb7g+MDi893tUYsjPnYujCDbBtvUAI4xmWYYtJ8h4jwwW2 GxcGpbryHkmIuhftl8DkUzigBKG0XfP5hCSAndBXUqx6IjoyQuZEmcXiEMlpj8tUwMcv3ung9V+ RJgArGxpxpwoS4ey9bg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-07_05,2026-09-07_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1011 impostorscore=0 adultscore=0 bulkscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609070226 From: Rohan Dutta When an AP is getting started, configure the AP as SMD-enabled if userspace defines configuration for the Seamless Mobility Domain (SMD). The SMD parameters are: - SMD Identifier: unique identifier of the SMD - SMD Preparation Timeout: Valid duration for a prepared target AP MLD - Downlink Data Forwarding: Forwarding support for buffered DL packets - Max number of Peer AP MLDs: Number of target AP MLDs a non-AP MLD can prepare with - SMD Type: Type of SMD - SMD PTK Mode: PTK mode used in the SMD - Neighbor Probing: UHR Neighboring AP Probing Without these parameters configured, drivers and lower layers cannot be able to support SMD BSS Transition. Signed-off-by: Rohan Dutta Co-developed-by: Aditya Sathish Signed-off-by: Aditya Sathish Co-developed-by: Sidhanta Sahu Signed-off-by: Sidhanta Sahu Signed-off-by: Pooventhiran G --- include/net/cfg80211.h | 25 ++++++++++++++++ include/net/mac80211.h | 2 ++ net/mac80211/cfg.c | 5 ++++ net/wireless/nl80211.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 110 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 6461a7bd0169..d0a269f4c711 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1587,6 +1587,29 @@ struct cfg80211_s1g_short_beacon { size_t short_tail_len; }; +/** + * struct cfg80211_smd_params - Seamless Mobility Domain parameters + * + * @smd_enabled: SMD is enabled on this device + * @smd_identifier: SMD ID (ETH_ALEN bytes) + * @smd_timeout: timeout in 64 TUs for ST preparation + * @dl_data_fwd: MSDU forwarding supported + * @max_num_of_peer_apmlds: max prepared AP MLDs supported (0-7) + * @smd_type: SMD type + * @ptk_mode: PTK mode + * @neighbor_probing: UHR Neighboring AP Probing supported + */ +struct cfg80211_smd_params { + bool smd_enabled; + u8 smd_identifier[ETH_ALEN]; + u16 smd_timeout; + bool dl_data_fwd; + u8 max_num_of_peer_apmlds; + enum nl80211_smd_type smd_type; + enum nl80211_smd_ptk_mode ptk_mode; + bool neighbor_probing; +}; + /** * struct cfg80211_ap_settings - AP configuration * @@ -1623,6 +1646,7 @@ struct cfg80211_s1g_short_beacon { * @mbssid_config: AP settings for multiple bssid * @s1g_long_beacon_period: S1G long beacon period * @s1g_short_beacon: S1G short beacon data + * @smd_params: Seamless Mobility Domain (SMD) parameters */ struct cfg80211_ap_settings { struct cfg80211_chan_def chandef; @@ -1655,6 +1679,7 @@ struct cfg80211_ap_settings { struct cfg80211_mbssid_config mbssid_config; u8 s1g_long_beacon_period; struct cfg80211_s1g_short_beacon s1g_short_beacon; + struct cfg80211_smd_params smd_params; }; diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 7bb4618065b6..6b82ca07fbf0 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -797,6 +797,7 @@ struct ieee80211_bss_npca_params { * @s1g_long_beacon_period: number of beacon intervals between each long * beacon transmission. * @npca: NPCA parameters + * @smd_params: SMD parameters */ struct ieee80211_bss_conf { struct ieee80211_vif *vif; @@ -904,6 +905,7 @@ struct ieee80211_bss_conf { u8 s1g_long_beacon_period; struct ieee80211_bss_npca_params npca; + struct cfg80211_smd_params smd_params; }; #define IEEE80211_NAN_MAX_CHANNELS 3 diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 23f4f9ec86d0..b4b42790c5d7 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1796,6 +1796,11 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, } } + if (params->smd_params.smd_enabled) + link_conf->smd_params = params->smd_params; + else + link_conf->smd_params.smd_enabled = false; + if (sdata->vif.type == NL80211_IFTYPE_AP && params->mbssid_config.tx_wdev) { err = ieee80211_set_ap_mbssid_options(sdata, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 22d71f32815f..aa7aa70a5b41 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7224,6 +7224,78 @@ static int nl80211_check_npca(struct cfg80211_registered_device *rdev, return -EINVAL; } +static int nl80211_parse_smd_params(struct genl_info *info, + struct cfg80211_smd_params *smd_params) +{ + struct nlattr *smd_params_attr = info->attrs[NL80211_ATTR_SMD_PARAMS]; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct nlattr *tb[NL80211_SMD_PARAMS_ATTR_MAX + 1]; + int err; + + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_SMD)) { + GENL_SET_ERR_MSG(info, "SMD is not supported"); + return -EOPNOTSUPP; + } + + if (!wdev->valid_links) { + GENL_SET_ERR_MSG(info, "SMD is not allowed without MLO"); + return -EINVAL; + } + + err = nla_parse_nested(tb, NL80211_SMD_PARAMS_ATTR_MAX, + smd_params_attr, nl80211_smd_params_policy, + NULL); + if (err) { + GENL_SET_ERR_MSG(info, "failed to parse SMD parameters"); + return err; + } + + if (!tb[NL80211_SMD_PARAMS_ATTR_IDENTIFIER] || + !tb[NL80211_SMD_PARAMS_ATTR_TIMEOUT] || + !tb[NL80211_SMD_PARAMS_ATTR_MAX_PEER_APMLDS] || + !tb[NL80211_SMD_PARAMS_ATTR_TYPE] || + !tb[NL80211_SMD_PARAMS_ATTR_PTK_MODE]) { + GENL_SET_ERR_MSG(info, "required SMD parameters are missing"); + return -EINVAL; + } + + memcpy(smd_params->smd_identifier, + nla_data(tb[NL80211_SMD_PARAMS_ATTR_IDENTIFIER]), + ETH_ALEN); + + smd_params->smd_timeout = + nla_get_u16(tb[NL80211_SMD_PARAMS_ATTR_TIMEOUT]); + + smd_params->dl_data_fwd = + !!tb[NL80211_SMD_PARAMS_ATTR_DL_DATA_FORWARDING]; + if (smd_params->dl_data_fwd && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_SMD_DL_PKT_FORWARDING)) { + GENL_SET_ERR_MSG(info, + "SMD DL packet forwarding is not supported"); + return -EOPNOTSUPP; + } + + smd_params->max_num_of_peer_apmlds = + nla_get_u8(tb[NL80211_SMD_PARAMS_ATTR_MAX_PEER_APMLDS]); + + smd_params->smd_type = + nla_get_u8(tb[NL80211_SMD_PARAMS_ATTR_TYPE]); + + smd_params->ptk_mode = + nla_get_u8(tb[NL80211_SMD_PARAMS_ATTR_PTK_MODE]); + + smd_params->neighbor_probing = + !!tb[NL80211_SMD_PARAMS_ATTR_NEIGHBOR_PROBING]; + + smd_params->smd_enabled = true; + + return 0; +} + static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; @@ -7505,6 +7577,12 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) /* FIXME: validate MLO/link-id against driver capabilities */ + if (info->attrs[NL80211_ATTR_SMD_PARAMS]) { + err = nl80211_parse_smd_params(info, ¶ms->smd_params); + if (err) + goto out; + } + err = rdev_start_ap(rdev, dev, params); if (!err) { wdev->links[link_id].ap.beacon_interval = params->beacon_interval; -- 2.34.1