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Wed, 11 Oct 2023 14:24:30 +0000 From: Iulia Tanasescu To: linux-bluetooth@vger.kernel.org Cc: claudia.rosu@nxp.com, mihai-octavian.urzica@nxp.com, silviu.barbulescu@nxp.com, vlad.pruteanu@nxp.com, andrei.istodorescu@nxp.com, luiz.dentz@gmail.com, Iulia Tanasescu Subject: [PATCH 2/2] Bluetoth: ISO: Fix broadcast event handling Date: Wed, 11 Oct 2023 17:24:08 +0300 Message-Id: <20231011142408.5529-3-iulia.tanasescu@nxp.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231011142408.5529-1-iulia.tanasescu@nxp.com> References: <20231011142408.5529-1-iulia.tanasescu@nxp.com> X-ClientProxiedBy: VI1PR0202CA0033.eurprd02.prod.outlook.com (2603:10a6:803:14::46) To AS8PR04MB8898.eurprd04.prod.outlook.com (2603:10a6:20b:42d::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB8898:EE_|VE1PR04MB7471:EE_ X-MS-Office365-Filtering-Correlation-Id: 91ca2b7a-fad1-4afd-50ca-08dbca65c810 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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The iso_match_pa_sync_flag function has been replaced with more specific matching functions, depending on the event being handled. Signed-off-by: Iulia Tanasescu --- include/net/bluetooth/hci_core.h | 3 +- net/bluetooth/hci_core.c | 50 ++++++++++----- net/bluetooth/iso.c | 101 +++++++++++++++++++++++++------ 3 files changed, 119 insertions(+), 35 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 99865c23e461..a85c47abd88d 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -2127,7 +2127,8 @@ void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); -void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); +void *hci_le_meta_evt_data(struct hci_dev *hdev, __u8 subevent); +void *hci_cmd_complete_data(struct hci_dev *hdev, __u16 opcode); u32 hci_conn_get_phy(struct hci_conn *conn); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 195aea2198a9..5ccc6ef1b66b 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3120,10 +3120,11 @@ void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; } -/* Get data from last received event */ -void *hci_recv_event_data(struct hci_dev *hdev, __u8 event) +/* Get data from last received LE Meta event */ +void *hci_le_meta_evt_data(struct hci_dev *hdev, __u8 subevent) { struct hci_event_hdr *hdr; + struct hci_ev_le_meta *ev; int offset; if (!hdev->recv_event) @@ -3132,21 +3133,42 @@ void *hci_recv_event_data(struct hci_dev *hdev, __u8 event) hdr = (void *)hdev->recv_event->data; offset = sizeof(*hdr); - if (hdr->evt != event) { - /* In case of LE metaevent check the subevent match */ - if (hdr->evt == HCI_EV_LE_META) { - struct hci_ev_le_meta *ev; + if (hdr->evt != HCI_EV_LE_META) + return NULL; - ev = (void *)hdev->recv_event->data + offset; - offset += sizeof(*ev); - if (ev->subevent == event) - goto found; - } + ev = (void *)hdev->recv_event->data + offset; + offset += sizeof(*ev); + if (ev->subevent != subevent) + return NULL; + + bt_dev_dbg(hdev, "subevent 0x%2.2x", subevent); + + return hdev->recv_event->data + offset; +} + +/* Get data from last received Command Complete event */ +void *hci_cmd_complete_data(struct hci_dev *hdev, __u16 opcode) +{ + struct hci_event_hdr *hdr; + struct hci_ev_cmd_complete *ev; + int offset; + + if (!hdev->recv_event) + return NULL; + + hdr = (void *)hdev->recv_event->data; + offset = sizeof(*hdr); + + if (hdr->evt != HCI_EV_CMD_COMPLETE) + return NULL; + + ev = (void *)hdev->recv_event->data + offset; + offset += sizeof(*ev); + + if (__le16_to_cpu(ev->opcode) != opcode) return NULL; - } -found: - bt_dev_dbg(hdev, "event 0x%2.2x", event); + bt_dev_dbg(hdev, "command complete event for 0x%4.4x", opcode); return hdev->recv_event->data + offset; } diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c index 8ab7ea5ebedf..76c186f951d1 100644 --- a/net/bluetooth/iso.c +++ b/net/bluetooth/iso.c @@ -1560,6 +1560,16 @@ struct iso_list_data { int count; }; +static bool iso_match_big_flag(struct sock *sk, void *data) +{ + struct hci_evt_le_big_sync_estabilished *ev = data; + + if (!test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags)) + return false; + + return ev->handle == iso_pi(sk)->qos.bcast.big; +} + static bool iso_match_big(struct sock *sk, void *data) { struct hci_evt_le_big_sync_estabilished *ev = data; @@ -1567,15 +1577,28 @@ static bool iso_match_big(struct sock *sk, void *data) return ev->handle == iso_pi(sk)->qos.bcast.big; } -static bool iso_match_pa_sync_flag(struct sock *sk, void *data) +static bool iso_match_conn_big_flag(struct sock *sk, void *data) +{ + struct hci_conn *hcon = data; + + if (!test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags)) + return false; + + return hcon->iso_qos.bcast.big == iso_pi(sk)->qos.bcast.big; +} + +static bool iso_match_conn_big(struct sock *sk, void *data) { - return test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags); + struct hci_conn *hcon = data; + + return hcon->iso_qos.bcast.big == iso_pi(sk)->qos.bcast.big; } static void iso_conn_ready(struct iso_conn *conn) { struct sock *parent = NULL; struct sock *sk = conn->sk; + struct hci_rp_le_setup_iso_path *rp = NULL; struct hci_ev_le_big_sync_estabilished *ev = NULL; struct hci_ev_le_pa_sync_established *ev2 = NULL; struct hci_evt_le_big_info_adv_report *ev3 = NULL; @@ -1590,29 +1613,56 @@ static void iso_conn_ready(struct iso_conn *conn) if (!hcon) return; - if (test_bit(HCI_CONN_BIG_SYNC, &hcon->flags) || - test_bit(HCI_CONN_BIG_SYNC_FAILED, &hcon->flags)) { - ev = hci_recv_event_data(hcon->hdev, - HCI_EVT_LE_BIG_SYNC_ESTABILISHED); + if (test_bit(HCI_CONN_BIG_SYNC, &hcon->flags)) { + rp = hci_cmd_complete_data(hcon->hdev, + HCI_OP_LE_SETUP_ISO_PATH); - /* Get reference to PA sync parent socket, if it exists */ - parent = iso_get_sock_listen(&hcon->src, - &hcon->dst, - iso_match_pa_sync_flag, NULL); - if (!parent && ev) + if (rp) { + /* If defer setup was used to listen for this + * event, get reference to the socket marked + * with the BT_SK_PA_SYNC flag. + */ parent = iso_get_sock_listen(&hcon->src, &hcon->dst, - iso_match_big, ev); + iso_match_conn_big_flag, + hcon); + + if (!parent) + parent = iso_get_sock_listen(&hcon->src, + &hcon->dst, + iso_match_conn_big, + hcon); + } + } else if (test_bit(HCI_CONN_BIG_SYNC_FAILED, &hcon->flags)) { + ev = hci_le_meta_evt_data(hcon->hdev, + HCI_EVT_LE_BIG_SYNC_ESTABILISHED); + + if (ev) { + /* If defer setup was used to listen for this + * event, get reference to the socket marked + * with the BT_SK_PA_SYNC flag. + */ + parent = iso_get_sock_listen(&hcon->src, + &hcon->dst, + iso_match_big_flag, + ev); + + if (!parent) + parent = iso_get_sock_listen(&hcon->src, + &hcon->dst, + iso_match_big, + ev); + } } else if (test_bit(HCI_CONN_PA_SYNC_FAILED, &hcon->flags)) { - ev2 = hci_recv_event_data(hcon->hdev, - HCI_EV_LE_PA_SYNC_ESTABLISHED); + ev2 = hci_le_meta_evt_data(hcon->hdev, + HCI_EV_LE_PA_SYNC_ESTABLISHED); if (ev2) parent = iso_get_sock_listen(&hcon->src, &hcon->dst, iso_match_sid, ev2); } else if (test_bit(HCI_CONN_PA_SYNC, &hcon->flags)) { - ev3 = hci_recv_event_data(hcon->hdev, - HCI_EVT_LE_BIG_INFO_ADV_REPORT); + ev3 = hci_le_meta_evt_data(hcon->hdev, + HCI_EVT_LE_BIG_INFO_ADV_REPORT); if (ev3) parent = iso_get_sock_listen(&hcon->src, &hcon->dst, @@ -1700,6 +1750,16 @@ static bool iso_match_sid(struct sock *sk, void *data) return ev->sid == iso_pi(sk)->bc_sid; } +static bool iso_match_sync_handle_flag(struct sock *sk, void *data) +{ + struct hci_evt_le_big_info_adv_report *ev = data; + + if (!test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags)) + return false; + + return le16_to_cpu(ev->sync_handle) == iso_pi(sk)->sync_handle; +} + static bool iso_match_sync_handle(struct sock *sk, void *data) { struct hci_evt_le_big_info_adv_report *ev = data; @@ -1740,7 +1800,7 @@ int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) * in iso_pi(sk)->base so it can be passed up to user, in the case of a * broadcast sink. */ - ev1 = hci_recv_event_data(hdev, HCI_EV_LE_PA_SYNC_ESTABLISHED); + ev1 = hci_le_meta_evt_data(hdev, HCI_EV_LE_PA_SYNC_ESTABLISHED); if (ev1) { sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr, iso_match_sid, ev1); @@ -1750,11 +1810,12 @@ int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) goto done; } - ev2 = hci_recv_event_data(hdev, HCI_EVT_LE_BIG_INFO_ADV_REPORT); + ev2 = hci_le_meta_evt_data(hdev, HCI_EVT_LE_BIG_INFO_ADV_REPORT); if (ev2) { /* Try to get PA sync listening socket, if it exists */ sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr, - iso_match_pa_sync_flag, NULL); + iso_match_sync_handle_flag, + ev2); if (!sk) sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr, iso_match_sync_handle, ev2); @@ -1780,7 +1841,7 @@ int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) } } - ev3 = hci_recv_event_data(hdev, HCI_EV_LE_PER_ADV_REPORT); + ev3 = hci_le_meta_evt_data(hdev, HCI_EV_LE_PER_ADV_REPORT); if (ev3) { sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr, iso_match_sync_handle_pa_report, ev3);