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[134.134.137.73]) by smtp.gmail.com with ESMTPSA id 204sm13096371pfx.3.2020.07.12.23.18.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 12 Jul 2020 23:18:55 -0700 (PDT) From: Sathish Narasimman X-Google-Original-From: Sathish Narasimman To: linux-bluetooth@vger.kernel.org Cc: Sathish Narasimman Subject: [PATCH v4 8/8] Bluetooth: Enable controller RPA resolution using Experimental feature Date: Mon, 13 Jul 2020 11:52:13 +0530 Message-Id: <20200713062213.3692-9-sathish.narasimman@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200713062213.3692-1-sathish.narasimman@intel.com> References: <20200713062213.3692-1-sathish.narasimman@intel.com> Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This patch adds support to enable the use of RPA Address resolution using expermental feature mgmt command. Signed-off-by: Sathish Narasimman --- include/net/bluetooth/hci.h | 1 + net/bluetooth/hci_event.c | 3 ++- net/bluetooth/hci_request.c | 6 +++-- net/bluetooth/mgmt.c | 52 +++++++++++++++++++++++++++++++++++++ 4 files changed, 59 insertions(+), 3 deletions(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 4ff2fc4498f3..cb284365b4c1 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -307,6 +307,7 @@ enum { HCI_FORCE_BREDR_SMP, HCI_FORCE_STATIC_ADDR, HCI_LL_RPA_RESOLUTION, + HCI_ENABLE_RPA_RESOLUTION, HCI_CMD_PENDING, HCI_FORCE_NO_MITM, diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 684c68cb5c76..c8a5e1e4dba2 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -5222,7 +5222,8 @@ static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, le16_to_cpu(ev->latency), le16_to_cpu(ev->supervision_timeout)); - if (use_ll_privacy(hdev) && + if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) && + use_ll_privacy(hdev) && hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) hci_req_disable_address_resolution(hdev); } diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index c3193f7f9ff0..cb44b83539e6 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -677,7 +677,8 @@ void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn) } /* Disable address resolution */ - if (use_ll_privacy(hdev) && + if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) && + use_ll_privacy(hdev) && hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION) && !rpa_le_conn) { __u8 enable = 0x00; hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable); @@ -870,7 +871,8 @@ static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval, return; } - if (use_ll_privacy(hdev) && addr_resolv) { + if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) && + use_ll_privacy(hdev) && addr_resolv) { u8 enable = 0x01; hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable); } diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index c292d5de4dc3..fbe02ab5fa05 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3759,6 +3759,12 @@ static const u8 simult_central_periph_uuid[16] = { 0x96, 0x46, 0xc0, 0x42, 0xb5, 0x10, 0x1b, 0x67, }; +/* 15c0a148-c273-11ea-b3de-0242ac130004 */ +static const u8 rpa_resolution_uuid[16] = { + 0x04, 0x00, 0x13, 0xac, 0x42, 0x02, 0xde, 0xb3, + 0xea, 0x11, 0x73, 0xc2, 0x48, 0xa1, 0xc0, 0x15, +}; + static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { @@ -3795,6 +3801,17 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, idx++; } + if (hdev) { + if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION)) + flags = BIT(0); + else + flags = 0; + + memcpy(rp->features[idx].uuid, rpa_resolution_uuid, 16); + rp->features[idx].flags = cpu_to_le32(flags); + idx++; + } + rp->feature_count = cpu_to_le16(idx); /* After reading the experimental features information, enable @@ -3895,6 +3912,41 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, } #endif + if (!memcmp(cp->uuid, rpa_resolution_uuid, 16)) { + bool val; + int err; + + /* Parameters are limited to a single octet */ + if (data_len != MGMT_SET_EXP_FEATURE_SIZE + 1) + return mgmt_cmd_status(sk, MGMT_INDEX_NONE, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + /* Only boolean on/off is supported */ + if (cp->param[0] != 0x00 && cp->param[0] != 0x01) + return mgmt_cmd_status(sk, MGMT_INDEX_NONE, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + val = !!cp->param[0]; + + if (val) + hci_dev_set_flag(hdev, HCI_ENABLE_RPA_RESOLUTION); + else + hci_dev_clear_flag(hdev, HCI_ENABLE_RPA_RESOLUTION); + + memcpy(rp.uuid, rpa_resolution_uuid, 16); + rp.flags = cpu_to_le32(val ? BIT(0) : 0); + + hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS); + + err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, + MGMT_OP_SET_EXP_FEATURE, 0, + &rp, sizeof(rp)); + + return err; + } + return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE, MGMT_OP_SET_EXP_FEATURE, MGMT_STATUS_NOT_SUPPORTED); -- 2.17.1