From 93c284ee901f7d7bdd09087e92abefb7496c3777 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Thu, 27 Sep 2012 17:26:20 +0300 Subject: [PATCH] Bluetooth: AMP: Write remote AMP Assoc When receiving HCI Command Status after HCI Create Physical Link execute HCI Write Remote AMP Assoc command to AMP controller. Signed-off-by: Andrei Emeltchenko Signed-off-by: Gustavo Padovan --- include/net/bluetooth/amp.h | 2 + include/net/bluetooth/hci_core.h | 2 + net/bluetooth/amp.c | 80 ++++++++++++++++++++++++++++++++ net/bluetooth/hci_event.c | 29 ++++++++++++ 4 files changed, 113 insertions(+) diff --git a/include/net/bluetooth/amp.h b/include/net/bluetooth/amp.h index cadb3d032856..8f8032965eaf 100644 --- a/include/net/bluetooth/amp.h +++ b/include/net/bluetooth/amp.h @@ -39,5 +39,7 @@ void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle); void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr); void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr, struct hci_conn *hcon); +void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle); +void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle); #endif /* __AMP_H */ diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 464eae340419..ea1f9340324d 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -127,6 +127,8 @@ struct le_scan_params { struct amp_assoc { __u16 len; __u16 offset; + __u16 rem_len; + __u16 len_so_far; __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; }; diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c index 657ec736bbc6..5895ad0d2ac9 100644 --- a/net/bluetooth/amp.c +++ b/net/bluetooth/amp.c @@ -233,6 +233,86 @@ void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr) hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp); } + +/* Write AMP Assoc data fragments, returns true with last fragment written*/ +static bool amp_write_rem_assoc_frag(struct hci_dev *hdev, + struct hci_conn *hcon) +{ + struct hci_cp_write_remote_amp_assoc *cp; + struct amp_mgr *mgr = hcon->amp_mgr; + struct amp_ctrl *ctrl; + u16 frag_len, len; + + ctrl = amp_ctrl_lookup(mgr, hcon->remote_id); + if (!ctrl) + return false; + + if (!ctrl->assoc_rem_len) { + BT_DBG("all fragments are written"); + ctrl->assoc_rem_len = ctrl->assoc_len; + ctrl->assoc_len_so_far = 0; + + amp_ctrl_put(ctrl); + return true; + } + + frag_len = min_t(u16, 248, ctrl->assoc_rem_len); + len = frag_len + sizeof(*cp); + + cp = kzalloc(len, GFP_KERNEL); + if (!cp) { + amp_ctrl_put(ctrl); + return false; + } + + BT_DBG("hcon %p ctrl %p frag_len %u assoc_len %u rem_len %u", + hcon, ctrl, frag_len, ctrl->assoc_len, ctrl->assoc_rem_len); + + cp->phy_handle = hcon->handle; + cp->len_so_far = cpu_to_le16(ctrl->assoc_len_so_far); + cp->rem_len = cpu_to_le16(ctrl->assoc_rem_len); + memcpy(cp->frag, ctrl->assoc, frag_len); + + ctrl->assoc_len_so_far += frag_len; + ctrl->assoc_rem_len -= frag_len; + + amp_ctrl_put(ctrl); + + hci_send_cmd(hdev, HCI_OP_WRITE_REMOTE_AMP_ASSOC, len, cp); + + kfree(cp); + + return false; +} + +void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle) +{ + struct hci_conn *hcon; + + BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle); + + hcon = hci_conn_hash_lookup_handle(hdev, handle); + if (!hcon) + return; + + amp_write_rem_assoc_frag(hdev, hcon); +} + +void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle) +{ + struct hci_conn *hcon; + + BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle); + + hcon = hci_conn_hash_lookup_handle(hdev, handle); + if (!hcon) + return; + + BT_DBG("%s phy handle 0x%2.2x hcon %p", hdev->name, handle, hcon); + + amp_write_rem_assoc_frag(hdev, hcon); +} + void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr, struct hci_conn *hcon) { diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index bd06ef95693d..0b7ba1e39d45 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1215,6 +1215,20 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev, hci_req_complete(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, status); } +static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev, + struct sk_buff *skb) +{ + struct hci_rp_write_remote_amp_assoc *rp = (void *) skb->data; + + BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x", + hdev->name, rp->status, rp->phy_handle); + + if (rp->status) + return; + + amp_write_rem_assoc_continue(hdev, rp->phy_handle); +} + static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) { BT_DBG("%s status 0x%2.2x", hdev->name, status); @@ -1700,7 +1714,18 @@ static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status) { + struct hci_cp_create_phy_link *cp; + BT_DBG("%s status 0x%2.2x", hdev->name, status); + + if (status) + return; + + cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK); + if (!cp) + return; + + amp_write_remote_assoc(hdev, cp->phy_handle); } static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) @@ -2436,6 +2461,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cc_write_le_host_supported(hdev, skb); break; + case HCI_OP_WRITE_REMOTE_AMP_ASSOC: + hci_cc_write_remote_amp_assoc(hdev, skb); + break; + default: BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); break; -- 2.30.2