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@@ -0,0 +1,308 @@
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+/*
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+ BlueZ - Bluetooth protocol stack for Linux
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+ Copyright (C) 2010 Nokia Corporation
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License version 2 as
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+ published by the Free Software Foundation;
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+
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+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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+ IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+
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+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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+ SOFTWARE IS DISCLAIMED.
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+*/
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+
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+/* Bluetooth HCI Management interface */
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+
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+#include <asm/uaccess.h>
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+#include <asm/unaligned.h>
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+
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+#include <net/bluetooth/bluetooth.h>
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+#include <net/bluetooth/hci_core.h>
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+#include <net/bluetooth/mgmt.h>
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+
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+#define MGMT_VERSION 0
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+#define MGMT_REVISION 1
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+
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+static int cmd_status(struct sock *sk, u16 cmd, u8 status)
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+{
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+ struct sk_buff *skb;
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+ struct mgmt_hdr *hdr;
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+ struct mgmt_ev_cmd_status *ev;
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+
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+ BT_DBG("sock %p", sk);
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+
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+ skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_ATOMIC);
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+ if (!skb)
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+ return -ENOMEM;
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+
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+ hdr = (void *) skb_put(skb, sizeof(*hdr));
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+
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+ hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
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+ hdr->len = cpu_to_le16(sizeof(*ev));
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+
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+ ev = (void *) skb_put(skb, sizeof(*ev));
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+ ev->status = status;
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+ put_unaligned_le16(cmd, &ev->opcode);
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+
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+ if (sock_queue_rcv_skb(sk, skb) < 0)
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+ kfree_skb(skb);
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+
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+ return 0;
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+}
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+
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+static int read_version(struct sock *sk)
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+{
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+ struct sk_buff *skb;
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+ struct mgmt_hdr *hdr;
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+ struct mgmt_ev_cmd_complete *ev;
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+ struct mgmt_rp_read_version *rp;
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+
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+ BT_DBG("sock %p", sk);
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+
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+ skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC);
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+ if (!skb)
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+ return -ENOMEM;
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+
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+ hdr = (void *) skb_put(skb, sizeof(*hdr));
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+ hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
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+ hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp));
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+
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+ ev = (void *) skb_put(skb, sizeof(*ev));
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+ put_unaligned_le16(MGMT_OP_READ_VERSION, &ev->opcode);
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+
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+ rp = (void *) skb_put(skb, sizeof(*rp));
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+ rp->version = MGMT_VERSION;
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+ put_unaligned_le16(MGMT_REVISION, &rp->revision);
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+
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+ if (sock_queue_rcv_skb(sk, skb) < 0)
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+ kfree_skb(skb);
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+
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+ return 0;
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+}
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+
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+static int read_index_list(struct sock *sk)
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+{
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+ struct sk_buff *skb;
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+ struct mgmt_hdr *hdr;
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+ struct mgmt_ev_cmd_complete *ev;
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+ struct mgmt_rp_read_index_list *rp;
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+ struct list_head *p;
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+ size_t body_len;
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+ u16 count;
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+ int i;
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+
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+ BT_DBG("sock %p", sk);
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+
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+ read_lock(&hci_dev_list_lock);
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+
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+ count = 0;
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+ list_for_each(p, &hci_dev_list) {
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+ count++;
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+ }
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+
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+ body_len = sizeof(*ev) + sizeof(*rp) + (2 * count);
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+ skb = alloc_skb(sizeof(*hdr) + body_len, GFP_ATOMIC);
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+ if (!skb)
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+ return -ENOMEM;
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+
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+ hdr = (void *) skb_put(skb, sizeof(*hdr));
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+ hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
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+ hdr->len = cpu_to_le16(body_len);
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+
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+ ev = (void *) skb_put(skb, sizeof(*ev));
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+ put_unaligned_le16(MGMT_OP_READ_INDEX_LIST, &ev->opcode);
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+
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+ rp = (void *) skb_put(skb, sizeof(*rp) + (2 * count));
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+ put_unaligned_le16(count, &rp->num_controllers);
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+
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+ i = 0;
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+ list_for_each(p, &hci_dev_list) {
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+ struct hci_dev *d = list_entry(p, struct hci_dev, list);
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+ put_unaligned_le16(d->id, &rp->index[i++]);
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+ BT_DBG("Added hci%u", d->id);
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+ }
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+
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+ read_unlock(&hci_dev_list_lock);
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+
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+ if (sock_queue_rcv_skb(sk, skb) < 0)
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+ kfree_skb(skb);
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+
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+ return 0;
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+}
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+
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+static int read_controller_info(struct sock *sk, unsigned char *data, u16 len)
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+{
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+ struct sk_buff *skb;
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+ struct mgmt_hdr *hdr;
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+ struct mgmt_ev_cmd_complete *ev;
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+ struct mgmt_rp_read_info *rp;
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+ struct mgmt_cp_read_info *cp;
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+ struct hci_dev *hdev;
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+ u16 dev_id;
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+
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+ BT_DBG("sock %p", sk);
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+
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+ if (len != 2)
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+ return cmd_status(sk, MGMT_OP_READ_INFO, EINVAL);
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+
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+ skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC);
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+ if (!skb)
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+ return -ENOMEM;
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+
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+ hdr = (void *) skb_put(skb, sizeof(*hdr));
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+ hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
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+ hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp));
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+
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+ ev = (void *) skb_put(skb, sizeof(*ev));
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+ put_unaligned_le16(MGMT_OP_READ_INFO, &ev->opcode);
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+
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+ rp = (void *) skb_put(skb, sizeof(*rp));
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+
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+ cp = (void *) data;
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+ dev_id = get_unaligned_le16(&cp->index);
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+
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+ BT_DBG("request for hci%u", dev_id);
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+
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+ hdev = hci_dev_get(dev_id);
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+ if (!hdev) {
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+ kfree_skb(skb);
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+ return cmd_status(sk, MGMT_OP_READ_INFO, ENODEV);
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+ }
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+
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+ hci_dev_lock_bh(hdev);
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+
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+ put_unaligned_le16(hdev->id, &rp->index);
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+ rp->type = hdev->dev_type;
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+
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+ rp->powered = test_bit(HCI_UP, &hdev->flags);
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+ rp->discoverable = test_bit(HCI_ISCAN, &hdev->flags);
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+ rp->pairable = test_bit(HCI_PSCAN, &hdev->flags);
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+
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+ if (test_bit(HCI_AUTH, &hdev->flags))
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+ rp->sec_mode = 3;
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+ else if (hdev->ssp_mode > 0)
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+ rp->sec_mode = 4;
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+ else
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+ rp->sec_mode = 2;
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+
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+ bacpy(&rp->bdaddr, &hdev->bdaddr);
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+ memcpy(rp->features, hdev->features, 8);
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+ memcpy(rp->dev_class, hdev->dev_class, 3);
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+ put_unaligned_le16(hdev->manufacturer, &rp->manufacturer);
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+ rp->hci_ver = hdev->hci_ver;
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+ put_unaligned_le16(hdev->hci_rev, &rp->hci_rev);
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+
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+ hci_dev_unlock_bh(hdev);
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+ hci_dev_put(hdev);
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+
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+ if (sock_queue_rcv_skb(sk, skb) < 0)
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+ kfree_skb(skb);
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+
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+ return 0;
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+}
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+
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+int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
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+{
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+ unsigned char *buf;
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+ struct mgmt_hdr *hdr;
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+ u16 opcode, len;
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+ int err;
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+
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+ BT_DBG("got %zu bytes", msglen);
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+
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+ if (msglen < sizeof(*hdr))
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+ return -EINVAL;
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+
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+ buf = kmalloc(msglen, GFP_ATOMIC);
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+ if (!buf)
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+ return -ENOMEM;
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+
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+ if (memcpy_fromiovec(buf, msg->msg_iov, msglen)) {
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+ err = -EFAULT;
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+ goto done;
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+ }
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+
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+ hdr = (struct mgmt_hdr *) buf;
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+ opcode = get_unaligned_le16(&hdr->opcode);
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+ len = get_unaligned_le16(&hdr->len);
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+
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+ if (len != msglen - sizeof(*hdr)) {
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+ err = -EINVAL;
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+ goto done;
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+ }
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+
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+ switch (opcode) {
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+ case MGMT_OP_READ_VERSION:
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+ err = read_version(sk);
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+ break;
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+ case MGMT_OP_READ_INDEX_LIST:
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+ err = read_index_list(sk);
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+ break;
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+ case MGMT_OP_READ_INFO:
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+ err = read_controller_info(sk, buf + sizeof(*hdr), len);
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+ break;
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+ default:
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+ BT_DBG("Unknown op %u", opcode);
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+ err = cmd_status(sk, opcode, 0x01);
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+ break;
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+ }
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+
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+ if (err < 0)
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+ goto done;
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+
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+ err = msglen;
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+
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+done:
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+ kfree(buf);
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+ return err;
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+}
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+
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+static int mgmt_event(u16 event, void *data, u16 data_len)
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+{
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+ struct sk_buff *skb;
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+ struct mgmt_hdr *hdr;
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+
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+ skb = alloc_skb(sizeof(*hdr) + data_len, GFP_ATOMIC);
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+ if (!skb)
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+ return -ENOMEM;
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+
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+ bt_cb(skb)->channel = HCI_CHANNEL_CONTROL;
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+
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+ hdr = (void *) skb_put(skb, sizeof(*hdr));
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+ hdr->opcode = cpu_to_le16(event);
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+ hdr->len = cpu_to_le16(data_len);
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+
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+ memcpy(skb_put(skb, data_len), data, data_len);
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+
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+ hci_send_to_sock(NULL, skb);
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+ kfree_skb(skb);
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+
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+ return 0;
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+}
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+
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+int mgmt_index_added(u16 index)
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+{
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+ struct mgmt_ev_index_added ev;
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+
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+ put_unaligned_le16(index, &ev.index);
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+
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+ return mgmt_event(MGMT_EV_INDEX_ADDED, &ev, sizeof(ev));
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+}
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+
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+int mgmt_index_removed(u16 index)
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+{
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+ struct mgmt_ev_index_added ev;
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+
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+ put_unaligned_le16(index, &ev.index);
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+
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+ return mgmt_event(MGMT_EV_INDEX_REMOVED, &ev, sizeof(ev));
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+}
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John W. Linville