From patchwork Thu May 30 07:27:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baochen Qiang X-Patchwork-Id: 13679855 X-Patchwork-Delegate: kvalo@adurom.com Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 648357407B for ; Thu, 30 May 2024 07:27:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717054066; cv=none; b=oYmyddE3EyFhXSVJdNQZ4jtGipw8j3FI+zFWkZn2oxyq++EHw8dEeEY8Pd0n5GIZdGf2WZ3lwdLLcPGVMqmgVpLcVN4Hkkzd8d1yTyLfBORlr91P7lVHe7erhIvZMsrhoQAdBbvcddEVz9eu8QUNvsBXgPc5jgafqk3nvBBhSTo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717054066; c=relaxed/simple; bh=wKvLFueh4dWfqkCwlJS+YqHaUbQ/1DBF87bN8hhBkno=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XzwTQ23ARC1vSDS1k4D2mfGhmfMDW4P5c1O0+n2GebEOHay78IFTnT4TnXBz1W7VLVS29WjZjNG3gY3BepS6Rmy/VjHupp6vx3WfLJTJ8rpDMQxwWAnyXr6PGk6S09Py47sMMr3vxHeo3YSe3S1bme17w32nhpm7yUb/0nCOZGE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=gbPn4Psl; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="gbPn4Psl" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 44TKS5LV031925; Thu, 30 May 2024 07:27:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= DFZWhGRqA7EtgJzop0IwULC5Iy7oDWH+qXyERDhQbrc=; b=gbPn4PslpO4WUYsx 4SabYZBaCMhvrEhZ9l6PRoT7+zeW72Z5Di7d8DV3HsUlth2WVbdWXB/dfGr/nNQi +COAa6roqROWcYjqP0QW8FeJVpFRNMlNsHpLAS1mQy2gk4Jcea6jeZkbDjSG315u iWPlgvZicDBiedEeR2XSFfUcSyJgyq2cdnePy3W8LN8fwiqGJaiSablTgIXfmHLy HhnEJrb977SsT48vXtDt3/HspFBC4TamuDA/jIybV0BDajzRiy5QNb8x95VDPzYk AEmdcT71vOnBIw7kJMWqJh6PI5s50Z+bVmKZd5Bo14HgWqpHAjnO2Ak/uOaAaNEi LmIpkg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3yba0qkaxw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 30 May 2024 07:27:36 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 44U7RYl0007222 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 30 May 2024 07:27:35 GMT Received: from bqiang-SFF.qca.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; Thu, 30 May 2024 00:27:33 -0700 From: Baochen Qiang To: CC: , Subject: [PATCH v3 7/8] wifi: ath12k: support GTK rekey offload Date: Thu, 30 May 2024 15:27:13 +0800 Message-ID: <20240530072714.25671-8-quic_bqiang@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240530072714.25671-1-quic_bqiang@quicinc.com> References: <20240530072714.25671-1-quic_bqiang@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-GUID: 5l85c5OZ-H6SpiHJhNLlYGXQaGhMdDlO X-Proofpoint-ORIG-GUID: 5l85c5OZ-H6SpiHJhNLlYGXQaGhMdDlO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-30_05,2024-05-28_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 adultscore=0 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2405300054 Host sets GTK related info to firmware before WoW is enabled, and gets rekey replay_count and then disables GTK rekey when WoW quits. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 Signed-off-by: Baochen Qiang --- drivers/net/wireless/ath/ath12k/core.h | 8 ++ drivers/net/wireless/ath/ath12k/mac.c | 38 +++++++++ drivers/net/wireless/ath/ath12k/wmi.c | 112 +++++++++++++++++++++++++ drivers/net/wireless/ath/ath12k/wmi.h | 39 +++++++++ drivers/net/wireless/ath/ath12k/wow.c | 46 +++++++++- 5 files changed, 242 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index f98c3e7c413e..6e7d2dfb1205 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -229,6 +229,13 @@ struct ath12k_vif_cache { u32 bss_conf_changed; }; +struct ath12k_rekey_data { + u8 kck[NL80211_KCK_LEN]; + u8 kek[NL80211_KCK_LEN]; + u64 replay_ctr; + bool enable_offload; +}; + struct ath12k_vif { u32 vdev_id; enum wmi_vdev_type vdev_type; @@ -286,6 +293,7 @@ struct ath12k_vif { bool ps; struct ath12k_vif_cache *cache; struct inet6_dev *idev; + struct ath12k_rekey_data rekey_data; }; struct ath12k_vif_iter { diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 70311b94fef8..198b8bad0b16 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -2837,6 +2837,7 @@ static void ath12k_bss_assoc(struct ath12k *ar, } arvif->is_up = true; + arvif->rekey_data.enable_offload = false; ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac vdev %d up (associated) bssid %pM aid %d\n", @@ -2884,6 +2885,8 @@ static void ath12k_bss_disassoc(struct ath12k *ar, arvif->is_up = false; + memset(&arvif->rekey_data, 0, sizeof(arvif->rekey_data)); + cancel_delayed_work(&arvif->connection_loss_work); } @@ -8516,6 +8519,40 @@ static __maybe_unused void ath12k_mac_op_ipv6_changed(struct ieee80211_hw *hw, arvif->idev = idev; } +static void ath12k_mac_op_set_rekey_data(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_gtk_rekey_data *data) +{ + struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif); + struct ath12k_rekey_data *rekey_data = &arvif->rekey_data; + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + + ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac set rekey data vdev %d\n", + arvif->vdev_id); + + mutex_lock(&ar->conf_mutex); + + memcpy(rekey_data->kck, data->kck, NL80211_KCK_LEN); + memcpy(rekey_data->kek, data->kek, NL80211_KEK_LEN); + + /* The supplicant works on big-endian, the firmware expects it on + * little endian. + */ + rekey_data->replay_ctr = get_unaligned_be64(data->replay_ctr); + + arvif->rekey_data.enable_offload = true; + + ath12k_dbg_dump(ar->ab, ATH12K_DBG_MAC, "kck", NULL, + rekey_data->kck, NL80211_KCK_LEN); + ath12k_dbg_dump(ar->ab, ATH12K_DBG_MAC, "kek", NULL, + rekey_data->kck, NL80211_KEK_LEN); + ath12k_dbg_dump(ar->ab, ATH12K_DBG_MAC, "replay ctr", NULL, + &rekey_data->replay_ctr, sizeof(rekey_data->replay_ctr)); + + mutex_unlock(&ar->conf_mutex); +} + static const struct ieee80211_ops ath12k_ops = { .tx = ath12k_mac_op_tx, .wake_tx_queue = ieee80211_handle_wake_tx_queue, @@ -8531,6 +8568,7 @@ static const struct ieee80211_ops ath12k_ops = { .hw_scan = ath12k_mac_op_hw_scan, .cancel_hw_scan = ath12k_mac_op_cancel_hw_scan, .set_key = ath12k_mac_op_set_key, + .set_rekey_data = ath12k_mac_op_set_rekey_data, .sta_state = ath12k_mac_op_sta_state, .sta_set_txpwr = ath12k_mac_op_sta_set_txpwr, .sta_rc_update = ath12k_mac_op_sta_rc_update, diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c index 8148e518969e..a397c33c7449 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.c +++ b/drivers/net/wireless/ath/ath12k/wmi.c @@ -7089,6 +7089,56 @@ static void ath12k_wmi_event_wow_wakeup_host(struct ath12k_base *ab, struct sk_b complete(&ab->wow.wakeup_completed); } +static void ath12k_wmi_gtk_offload_status_event(struct ath12k_base *ab, + struct sk_buff *skb) +{ + const struct wmi_gtk_offload_status_event *ev; + struct ath12k_vif *arvif; + __be64 replay_ctr_be; + u64 replay_ctr; + const void **tb; + int ret; + + tb = ath12k_wmi_tlv_parse_alloc(ab, skb, GFP_ATOMIC); + if (IS_ERR(tb)) { + ret = PTR_ERR(tb); + ath12k_warn(ab, "failed to parse tlv: %d\n", ret); + return; + } + + ev = tb[WMI_TAG_GTK_OFFLOAD_STATUS_EVENT]; + if (!ev) { + ath12k_warn(ab, "failed to fetch gtk offload status ev"); + kfree(tb); + return; + } + + rcu_read_lock(); + arvif = ath12k_mac_get_arvif_by_vdev_id(ab, le32_to_cpu(ev->vdev_id)); + if (!arvif) { + rcu_read_unlock(); + ath12k_warn(ab, "failed to get arvif for vdev_id:%d\n", + le32_to_cpu(ev->vdev_id)); + kfree(tb); + return; + } + + replay_ctr = le64_to_cpu(ev->replay_ctr); + arvif->rekey_data.replay_ctr = replay_ctr; + ath12k_dbg(ab, ATH12K_DBG_WMI, "wmi gtk offload event refresh_cnt %d replay_ctr %llu\n", + le32_to_cpu(ev->refresh_cnt), replay_ctr); + + /* supplicant expects big-endian replay counter */ + replay_ctr_be = cpu_to_be64(replay_ctr); + + ieee80211_gtk_rekey_notify(arvif->vif, arvif->bssid, + (void *)&replay_ctr_be, GFP_ATOMIC); + + rcu_read_unlock(); + + kfree(tb); +} + static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb) { struct wmi_cmd_hdr *cmd_hdr; @@ -7212,6 +7262,9 @@ static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb) case WMI_WOW_WAKEUP_HOST_EVENTID: ath12k_wmi_event_wow_wakeup_host(ab, skb); break; + case WMI_GTK_OFFLOAD_STATUS_EVENTID: + ath12k_wmi_gtk_offload_status_event(ab, skb); + break; /* TODO: Add remaining events */ default: ath12k_dbg(ab, ATH12K_DBG_WMI, "Unknown eventid: 0x%x\n", id); @@ -7928,3 +7981,62 @@ int ath12k_wmi_arp_ns_offload(struct ath12k *ar, return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_SET_ARP_NS_OFFLOAD_CMDID); } + +int ath12k_wmi_gtk_rekey_offload(struct ath12k *ar, + struct ath12k_vif *arvif, bool enable) +{ + struct ath12k_rekey_data *rekey_data = &arvif->rekey_data; + struct wmi_gtk_rekey_offload_cmd *cmd; + struct sk_buff *skb; + __le64 replay_ctr; + int len; + + len = sizeof(*cmd); + skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_gtk_rekey_offload_cmd *)skb->data; + cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_GTK_OFFLOAD_CMD, sizeof(*cmd)); + cmd->vdev_id = cpu_to_le32(arvif->vdev_id); + + if (enable) { + cmd->flags = cpu_to_le32(GTK_OFFLOAD_ENABLE_OPCODE); + + /* the length in rekey_data and cmd is equal */ + memcpy(cmd->kck, rekey_data->kck, sizeof(cmd->kck)); + memcpy(cmd->kek, rekey_data->kek, sizeof(cmd->kek)); + + replay_ctr = cpu_to_le64(rekey_data->replay_ctr); + memcpy(cmd->replay_ctr, &replay_ctr, + sizeof(replay_ctr)); + } else { + cmd->flags = cpu_to_le32(GTK_OFFLOAD_DISABLE_OPCODE); + } + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "offload gtk rekey vdev: %d %d\n", + arvif->vdev_id, enable); + return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_GTK_OFFLOAD_CMDID); +} + +int ath12k_wmi_gtk_rekey_getinfo(struct ath12k *ar, + struct ath12k_vif *arvif) +{ + struct wmi_gtk_rekey_offload_cmd *cmd; + struct sk_buff *skb; + int len; + + len = sizeof(*cmd); + skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_gtk_rekey_offload_cmd *)skb->data; + cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_GTK_OFFLOAD_CMD, sizeof(*cmd)); + cmd->vdev_id = cpu_to_le32(arvif->vdev_id); + cmd->flags = cpu_to_le32(GTK_OFFLOAD_REQUEST_STATUS_OPCODE); + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "get gtk rekey vdev_id: %d\n", + arvif->vdev_id); + return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_GTK_OFFLOAD_CMDID); +} diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h index 0542d599d33d..0188dc78139b 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.h +++ b/drivers/net/wireless/ath/ath12k/wmi.h @@ -5377,6 +5377,41 @@ struct wmi_set_arp_ns_offload_cmd { */ } __packed; +#define GTK_OFFLOAD_OPCODE_MASK 0xFF000000 +#define GTK_OFFLOAD_ENABLE_OPCODE 0x01000000 +#define GTK_OFFLOAD_DISABLE_OPCODE 0x02000000 +#define GTK_OFFLOAD_REQUEST_STATUS_OPCODE 0x04000000 + +#define GTK_OFFLOAD_KEK_BYTES 16 +#define GTK_OFFLOAD_KCK_BYTES 16 +#define GTK_REPLAY_COUNTER_BYTES 8 +#define WMI_MAX_KEY_LEN 32 +#define IGTK_PN_SIZE 6 + +struct wmi_gtk_offload_status_event { + __le32 vdev_id; + __le32 flags; + __le32 refresh_cnt; + __le64 replay_ctr; + u8 igtk_key_index; + u8 igtk_key_length; + u8 igtk_key_rsc[IGTK_PN_SIZE]; + u8 igtk_key[WMI_MAX_KEY_LEN]; + u8 gtk_key_index; + u8 gtk_key_length; + u8 gtk_key_rsc[GTK_REPLAY_COUNTER_BYTES]; + u8 gtk_key[WMI_MAX_KEY_LEN]; +} __packed; + +struct wmi_gtk_rekey_offload_cmd { + __le32 tlv_header; + __le32 vdev_id; + __le32 flags; + u8 kek[GTK_OFFLOAD_KEK_BYTES]; + u8 kck[GTK_OFFLOAD_KCK_BYTES]; + u8 replay_ctr[GTK_REPLAY_COUNTER_BYTES]; +} __packed; + void ath12k_wmi_init_qcn9274(struct ath12k_base *ab, struct ath12k_wmi_resource_config_arg *config); void ath12k_wmi_init_wcn7850(struct ath12k_base *ab, @@ -5546,5 +5581,9 @@ int ath12k_wmi_arp_ns_offload(struct ath12k *ar, struct ath12k_vif *arvif, struct wmi_arp_ns_offload_arg *offload, bool enable); +int ath12k_wmi_gtk_rekey_offload(struct ath12k *ar, + struct ath12k_vif *arvif, bool enable); +int ath12k_wmi_gtk_rekey_getinfo(struct ath12k *ar, + struct ath12k_vif *arvif); #endif diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c index 92bcafd517e7..755bdae1b9ad 100644 --- a/drivers/net/wireless/ath/ath12k/wow.c +++ b/drivers/net/wireless/ath/ath12k/wow.c @@ -20,7 +20,9 @@ static const struct wiphy_wowlan_support ath12k_wowlan_support = { .flags = WIPHY_WOWLAN_DISCONNECT | - WIPHY_WOWLAN_MAGIC_PKT, + WIPHY_WOWLAN_MAGIC_PKT | + WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | + WIPHY_WOWLAN_GTK_REKEY_FAILURE, .pattern_min_len = WOW_MIN_PATTERN_SIZE, .pattern_max_len = WOW_MAX_PATTERN_SIZE, .max_pkt_offset = WOW_MAX_PKT_OFFSET, @@ -748,6 +750,41 @@ static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable) return 0; } +static int ath12k_gtk_rekey_offload(struct ath12k *ar, bool enable) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_type != WMI_VDEV_TYPE_STA || + !arvif->is_up || + !arvif->rekey_data.enable_offload) + continue; + + /* get rekey info before disable rekey offload */ + if (!enable) { + ret = ath12k_wmi_gtk_rekey_getinfo(ar, arvif); + if (ret) { + ath12k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + ret = ath12k_wmi_gtk_rekey_offload(ar, arvif, enable); + + if (ret) { + ath12k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n", + arvif->vdev_id, enable, ret); + return ret; + } + } + + return 0; +} + static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable) { int ret; @@ -759,6 +796,13 @@ static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable) return ret; } + ret = ath12k_gtk_rekey_offload(ar, enable); + if (ret) { + ath12k_warn(ar->ab, "failed to offload gtk rekey %d %d\n", + enable, ret); + return ret; + } + return 0; }