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Bluetooth: Add read_version management command 

This patch implements the initial read_version command that userspace
will use before any other management interface operations.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Johan Hedberg 2010-12-13 21:07:04 +02:00 committed by Gustavo F. Padovan
parent e41d8b4e13
commit 02d981292a
2 changed files with 42 additions and 0 deletions
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6
include/net/bluetooth/mgmt.h
View File

@ -27,6 +27,12 @@ struct mgmt_hdr {
} __packed;
#define MGMT_HDR_SIZE 4
#define MGMT_OP_READ_VERSION 0x0001
struct mgmt_rp_read_version {
__u8 version;
__le16 revision;
} __packed;
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;

36
net/bluetooth/mgmt.c
View File

@ -29,6 +29,39 @@
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/mgmt.h>
#define MGMT_VERSION 0
#define MGMT_REVISION 1
static int read_version(struct sock *sk)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
struct mgmt_ev_cmd_complete *ev;
struct mgmt_rp_read_version *rp;
BT_DBG("sock %p", sk);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), 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(sizeof(*ev) + sizeof(*rp));
ev = (void *) skb_put(skb, sizeof(*ev));
put_unaligned_le16(MGMT_OP_READ_VERSION, &ev->opcode);
rp = (void *) skb_put(skb, sizeof(*rp));
rp->version = MGMT_VERSION;
put_unaligned_le16(MGMT_REVISION, &rp->revision);
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;
@ -87,6 +120,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
}
switch (opcode) {
case MGMT_OP_READ_VERSION:
err = read_version(sk);
break;
default:
BT_DBG("Unknown op %u", opcode);
err = cmd_status(sk, opcode, 0x01);