From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
This patch implements the read_index_list command through which
userspace can get a list of current adapter indices.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/mgmt.h | 6 ++++
net/bluetooth/mgmt.c | 53 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 59 insertions(+), 0 deletions(-)
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index d353d64..c2b4c83 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -33,6 +33,12 @@ struct mgmt_rp_read_version {
__le16 revision;
} __packed;
+#define MGMT_OP_READ_INDEX_LIST 0x0003
+struct mgmt_rp_read_index_list {
+ __le16 num_controllers;
+ __le16 index[0];
+} __packed;
+
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 3e24c0b..7a8e321 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -62,6 +62,56 @@ static int read_version(struct sock *sk)
return 0;
}
+static int read_index_list(struct sock *sk)
+{
+ struct sk_buff *skb;
+ struct mgmt_hdr *hdr;
+ struct mgmt_ev_cmd_complete *ev;
+ struct mgmt_rp_read_index_list *rp;
+ struct list_head *p;
+ size_t body_len;
+ u16 count;
+ int i;
+
+ BT_DBG("sock %p", sk);
+
+ read_lock(&hci_dev_list_lock);
+
+ count = 0;
+ list_for_each(p, &hci_dev_list) {
+ count++;
+ }
+
+ body_len = sizeof(*ev) + sizeof(*rp) + (2 * count);
+ skb = alloc_skb(sizeof(*hdr) + body_len, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = (void *) skb_put(skb, sizeof(*hdr));
+ hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
+ hdr->len = cpu_to_le16(body_len);
+
+ ev = (void *) skb_put(skb, sizeof(*ev));
+ put_unaligned_le16(MGMT_OP_READ_INDEX_LIST, &ev->opcode);
+
+ rp = (void *) skb_put(skb, sizeof(*rp) + (2 * count));
+ put_unaligned_le16(count, &rp->num_controllers);
+
+ i = 0;
+ list_for_each(p, &hci_dev_list) {
+ struct hci_dev *d = list_entry(p, struct hci_dev, list);
+ put_unaligned_le16(d->id, &rp->index[i++]);
+ BT_DBG("Added hci%u", d->id);
+ }
+
+ read_unlock(&hci_dev_list_lock);
+
+ if (sock_queue_rcv_skb(sk, skb) < 0)
+ kfree_skb(skb);
+
+ return 0;
+}
+
static int cmd_status(struct sock *sk, u16 cmd, u8 status)
{
struct sk_buff *skb;
@@ -123,6 +173,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
case MGMT_OP_READ_VERSION:
err = read_version(sk);
break;
+ case MGMT_OP_READ_INDEX_LIST:
+ err = read_index_list(sk);
+ break;
default:
BT_DBG("Unknown op %u", opcode);
err = cmd_status(sk, opcode, 0x01);
--
1.7.2.3
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