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 83AD7530DE4 for ; Mon, 7 Sep 2026 20:34:25 +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=1788813268; cv=none; b=VRrucvHoHbc1b8kqLQfDw1ZnU5xL1/kl6dLOe5hEx5rf/qpDxyacqP6yJL/VTjlaih+pe0tWROtpnvkeFWpUEXxjlEl0+lYMXbgI4c+Jzoamjx2j5wWWJzRrZazXO27iAqP5fuAUrzS2UNnfXoyekuLmMxHJ8Q718+Rz4uEkwiE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788813268; c=relaxed/simple; bh=FQBKNG1LQN+Or7ubGtjxhGSxqu1NLRi2ZcAg1jgnpUg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=cSx6cb12gvyCfyWRlSB8NpBvXx+jsC8tSlgbqR0uhhBXxwDkOFWBvewwy7Rt5NJaE/xzE/H+2HRfZPzYQTxje7TZQKzH31kcCzMC/9C1DytkmYyJIMc/jdVCph+Cv34NGF6XKAeChpATmCWdedMq0WfWuWA63/0pBlNKZL29gjs= 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=OoC2xGnw; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=G+u0tUHX; 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="OoC2xGnw"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="G+u0tUHX" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 687H89di3485557 for ; Mon, 7 Sep 2026 20:34:24 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= tJrfU3MojC9W8Hc4my3vk6BlrKJp8pREKh3Df4ly1FA=; b=OoC2xGnwIVw6+/zZ YxCdpugcl1dqQF7oeAl0Woy+xsNAbcrpS3How7xgwvFlmMivmSDKD1m4A8p6gFaw lmbqNMzvXFJ+UysU+cBoneggQhjbTZqatOqXVxFcL9aa72vQKZSZFgwFFgp8W225 qKQ9EyIvr7H3jXCxqLsYWSAMi1T+MizyceS9FcrFVSKtdIiENX8idaa43/JZA7GC X+ABngcgEW5MkJhrzyK2K4AWyCCMefZIkS/X7c1700R/IUL3P/tI/5szjMnxFkIC ct7roYKVwtSpD+OUbhF4fe2YBPgPmXQjYTcnLUWG8MmqCOY1GIOzvpCNq75l28+C cKJGPQ== Received: from mail-pl1-f197.google.com (mail-pl1-f197.google.com [209.85.214.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4ghtty2682-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 07 Sep 2026 20:34:24 +0000 (GMT) Received: by mail-pl1-f197.google.com with SMTP id d9443c01a7336-2ce7dff6253so16737045ad.1 for ; Mon, 07 Sep 2026 13:34:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1788813263; x=1789418063; 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=tJrfU3MojC9W8Hc4my3vk6BlrKJp8pREKh3Df4ly1FA=; b=G+u0tUHXHB2yPT7hkdqvLOgH9IjLDnGbJ0oWvFmX/MJg0/MU/erCHwppJOLz+B/IHl uxaWDZzDaSZk9utDQoZwuI5ar1xtoUHo7mOejggMpy2JYu/8mW/RSNehzMP7EHXF0XEg ovj6342iZH+IQyqyMvk1Wb6ZqQSzENx+VSBI9etuPvhwo3ZOEDf67yFyPMcwlFbJeGen hLdldVwPkERXHer+hHQ9a5tWXtXepTyEBcS1bcn2eW7z97GjFWWopmGtncf5qe5HZKVT PhIAoMZhqOxWrE9kCtgJqfIJmkz/AwtS0UXuvrJTIyLL9YUzijvgOoFa4VKvwN68v4y+ /8FA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788813263; x=1789418063; 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=tJrfU3MojC9W8Hc4my3vk6BlrKJp8pREKh3Df4ly1FA=; b=kXC/QaPj4nPxEcbaEmweDbouGEvHqkQhWfNejYvwsSrhB/B5/PJEW89JHrD1rgXSIf n+vWP7JawNqwMz2eq6yn52NeBSWcPIK/yuVO54rUh9ZMRko+aqdxC0y2Kz/HVUHnayM0 bOT25UrRxAji6+mL8DqNRVycbtWiDC5ykV6bjQNU51f+JH34IPhF+fdXhHFwmITzW8ZI fJ9LGYngq18f2SvFeYQAaScbQxRMiGE4YS9KuDyx4+TRdeNJdSK1EjrUzY/1y0/W0fF9 w5a08zclL/t26UwM1x33l4x3B7yzSbPMxKQJVZdMFgX8UvMpZJZjqEWXPFLN17PqwhV9 EfmA== X-Forwarded-Encrypted: i=1; AKwUvBwNRce0hK4l44pIDh5HgDaAgnw3cnOzbL4TLXi13uH+Ya6VrcEDv3V3UHW0HuDPewc+IchGbf8=@vger.kernel.org X-Gm-Message-State: AFuF++m4bbD5ecLtvF33GJFuNmuXxqH8j2Wr8s9Q49U8MCMdkanCOvJS 2uipr202RuiQwI483CSevqwfMk+1pQvmr3CBVGDBxjEaqWzfym8c8VCluYzUi23bMCR6dCZ/phc WAAE7gtjGyQsv6kUzBvt05gqxHxnPnfof/K9lZQH5425BtuvVO5kbzxcPbA== X-Gm-Gg: AYBFou1D5jSq0zKwxT8tuxNi4hKMgL8bH9y9a77j3CTbjtOZy5E8MiyZ+bUUeS8j7dB J80b35nI8JZe4lAjHuLCUZovuM+hL2mS4jJUC0cqliwCifL2R0pt9VR9X6Yy6yosw83uiAAI3pQ NGu/MYwTDcUs9QHfPXhRJb1v8m7kz5ypHOxauOLIYubaYz5QZY+KwkwgkvHNWpLOcxM0Ge4S/LG cBFM99jZq2ukazSIgG+3VL6/N2+U16ccBg2MGLWce3RmE3z8qx2WogbX0SW2awx8DHwa0ZwYk3O AOV0kSjh81sASlhHw9oDq5qoan4CQwgrCiseaY/Jc+XN9hwzQqQ0bLl38mmLNzUexcu0oLVCpMu iKcJITiHTJoQoSoCKntNQu1wxpkth+IqjB+Csqg1fddgc+yY7YUVpoaOZBMlu16WbnNiFtSaCm+ JPiK6Cx2gfJ8dch8oOs7brXg== X-Received: by 2002:a17:902:c951:b0:2d9:2b1b:878a with SMTP id d9443c01a7336-2dafaf60ec2mr291623905ad.10.1788813263331; Mon, 07 Sep 2026 13:34:23 -0700 (PDT) X-Received: by 2002:a17:902:c951:b0:2d9:2b1b:878a with SMTP id d9443c01a7336-2dafaf60ec2mr291623525ad.10.1788813262835; Mon, 07 Sep 2026 13:34:22 -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.16.2026.09.07.13.34.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2026 13:34:22 -0700 (PDT) From: Pooventhiran G Date: Tue, 08 Sep 2026 01:59:27 +0530 Subject: [PATCH wireless-next 18/18] wifi: mac80211: Add mac80211 support to handle NL80211_CMD_GET_SMD_CTX Precedence: bulk X-Mailing-List: netdev@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-v1-18-65ad4ab30fbd@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-Authority-Analysis: v=2.4 cv=QNBYgALL c=1 sm=1 tr=0 ts=6a9f1fd0 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=c93CP5vvwBK-QZUl55wA:9 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-ORIG-GUID: cUXK5AgubrYQ4rglbTFeo3sp3n7F7ibq X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA3MDIyNiBTYWx0ZWRfXz3dMgeeO29oE XIeLPoLF2phUrRFe+D/UtkTf5FFQ2Y3fTikRXX2ENEjlnLgVNJevbr/V6D9552e+WXa28vN8ggr y6A/inNN0qwH2bfLbffB73Ny0U+4ofA= X-Proofpoint-GUID: cUXK5AgubrYQ4rglbTFeo3sp3n7F7ibq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA3MDIyNiBTYWx0ZWRfXx8KSxLIeTAsO +WfMO1M3kzr88STBEAqBHXhZbZGtdV2wPDEK0O0xuMG5Zf9g9u2Q7kOaLLbNSu15WTp6bxVuk9y yTyPpz/Hxe+KdyMYrvje+ziTfgZUT4ZTA3jQSnMxYxrBxjL6Xbuk1rWz+YZxd+vsO/Cm11+3+xB YRXd6cyP9TJQwgJLa2oOxM1eIrRIJvSrNaaB6JaseNf5Jr1XYrSWNikXwYYByllXN5aVoefzCv4 ag7PdtSsuQhAWTWLPR3Rh3yd5eOy99HeR7Zo4MX+208yu81cLUSPkugZOQWAbplt9nT3kEkJu5y pPBqLZbGRBu1lbQgNgx+MwCBJC4Q+EfBbeOyXCvt5yw8lM8KDeealVD6P9WWHknlaK46a3YMg2y pPWfJjKn8UMJ43kA3PXrUAWWYb6laPoNb9P8x34+c82+9BMmZvGMY8w8ROFfIqe3Jlj5rsLu2QZ 35Yok4m5MOBG4TqHKJw== 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 malwarescore=0 spamscore=0 suspectscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 clxscore=1015 bulkscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609070226 cfg80211 supports NL80211_CMD_GET_SMD_CTX from userspace on the current AP MLD to collect the station's context on the target AP MLD's behalf; this context is used by the target AP MLD to program its TX and RX queues to support seamless roaming of the non-AP MLD. Implement the get_smd_ctx cfg80211_op in mac80211 to invoke the driver to collect the requested station context. Because context collection is asynchronous, the driver signals completion later via ieee80211_get_smd_ctx_done(), which packs the collected context into NL80211_CMD_SMD_CTX_EVENT and delivers it to userspace as a multicast event. Signed-off-by: Pooventhiran G --- include/net/mac80211.h | 23 +++++++++++++++++++++++ net/mac80211/cfg.c | 34 ++++++++++++++++++++++++++++++++++ net/mac80211/driver-ops.h | 24 ++++++++++++++++++++++++ net/mac80211/sta_info.c | 6 ++++++ net/mac80211/trace.h | 27 +++++++++++++++++++++++++++ 5 files changed, 114 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index e0e13f0ed31f..f16112e41594 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2528,6 +2528,21 @@ enum ieee80211_sta_state { IEEE80211_STA_AUTHORIZED, }; +/** + * ieee80211_get_smd_ctx_done - Deliver async get_smd_ctx result to nl80211 + * @vif: virtual interface + * @sta_addr: non-AP MLD address the context was collected for + * @st_info: SMD BSS Transition Info (@st_info or @st_info->ctx may be NULL to + * indicate failure). @st_info is owned by the driver. + * + * Called by the driver after the %NL80211_CMD_GET_SMD_CTX context collection + * is complete. mac80211 forwards the result to cfg80211 which finds the pending + * nl80211 request and sends reply to userspace. + */ +void ieee80211_get_smd_ctx_done(struct ieee80211_vif *vif, + const u8 *sta_addr, + struct cfg80211_smd_transition_info *st_info); + /** * enum ieee80211_sta_rx_bandwidth - station RX bandwidth * @IEEE80211_STA_RX_BW_20: station can only receive 20 MHz @@ -4782,6 +4797,11 @@ enum ieee80211_sta_smd_state { * The callback can sleep. * @set_smd_ctx: Set the UHR SMD context for the non-AP MLD. This is used on * the target AP MLD side to program dynamic context. + * @get_smd_ctx: Get the UHR SMD context for the non-AP MLD. This is used in + * the current AP MLD side on behalf of the target AP MLD to collect + * dynamic context, when the non-AP MLD sends ST Execute frame directly + * to the target. Since the response is asynchronous, the drivers that + * implement this should not store reference to @sta. */ struct ieee80211_ops { void (*tx)(struct ieee80211_hw *hw, @@ -5191,6 +5211,9 @@ struct ieee80211_ops { int (*set_smd_ctx)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct cfg80211_smd_transition_info *st_info); + int (*get_smd_ctx)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum nl80211_smd_ctx_type type); }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 268d5f42293a..a33ce96a4752 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -6104,6 +6104,39 @@ static int ieee80211_set_smd_ctx(struct wiphy *wiphy, struct wireless_dev *wdev, return drv_set_smd_ctx(local, sdata, &sta->sta, st_info); } +static int ieee80211_get_smd_ctx(struct wiphy *wiphy, struct wireless_dev *wdev, + const u8 *addr, + enum nl80211_smd_ctx_type type) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata; + struct sta_info *sta; + + lockdep_assert_wiphy(wiphy); + + sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + + if (sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_AP_VLAN) + return -EOPNOTSUPP; + + sta = sta_info_get_bss(sdata, addr); + if (!sta || !sta->sta.smd_params.smd_sta) + return -EINVAL; + + return drv_get_smd_ctx(local, sdata, &sta->sta, type); +} + +void ieee80211_get_smd_ctx_done(struct ieee80211_vif *vif, + const u8 *sta_addr, + struct cfg80211_smd_transition_info *st_info) +{ + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + + cfg80211_get_smd_ctx_done(&sdata->wdev, sta_addr, st_info); +} +EXPORT_SYMBOL(ieee80211_get_smd_ctx_done); + const struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -6223,4 +6256,5 @@ const struct cfg80211_ops mac80211_config_ops = { .nan_set_local_sched = ieee80211_set_local_nan_sched, .nan_set_peer_sched = ieee80211_set_peer_nan_sched, .set_smd_ctx = ieee80211_set_smd_ctx, + .get_smd_ctx = ieee80211_get_smd_ctx, }; diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index e764dd394de2..0339ff71cd4a 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -1844,4 +1844,28 @@ static inline int drv_set_smd_ctx(struct ieee80211_local *local, return ret; } +static inline int drv_get_smd_ctx(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta, + enum nl80211_smd_ctx_type type) +{ + int ret; + + if (!sdata || !local->ops->get_smd_ctx) + return -EOPNOTSUPP; + + sdata = get_bss_sdata(sdata); + + lockdep_assert_wiphy(local->hw.wiphy); + + if (!check_sdata_in_driver(sdata)) + return -EIO; + + trace_drv_get_smd_ctx(local, sdata, sta, type); + ret = local->ops->get_smd_ctx(&local->hw, &sdata->vif, sta, type); + trace_drv_return_int(local, ret); + + return ret; +} + #endif /* __MAC80211_DRIVER_OPS */ diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 5aa6f5b481e3..9ea0a8791289 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1312,6 +1312,7 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta) { struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; + struct wireless_dev *wdev; int ret, i; might_sleep(); @@ -1321,6 +1322,7 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta) local = sta->local; sdata = sta->sdata; + wdev = &sdata->wdev; lockdep_assert_wiphy(local->hw.wiphy); @@ -1390,6 +1392,10 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta) rcu_access_pointer(sdata->u.vlan.sta) == sta) RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + cfg80211_free_pending_smd_ctx_req(wdev, sta->addr); + return 0; } diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index 7aba79e441cf..38ad5076232d 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -3487,6 +3487,33 @@ TRACE_EVENT(drv_set_smd_ctx, ) ); +TRACE_EVENT(drv_get_smd_ctx, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta, + enum nl80211_smd_ctx_type type), + + TP_ARGS(local, sdata, sta, type), + + TP_STRUCT__entry( + LOCAL_ENTRY + VIF_ENTRY + STA_ENTRY + __field(u8, st_type) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + VIF_ASSIGN; + STA_ASSIGN; + __entry->st_type = type; + ), + + TP_printk(LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT ", ST type=%u", + LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->st_type + ) +); + #endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */ #undef TRACE_INCLUDE_PATH -- 2.34.1