Bluetooth: Add initial Bluetooth Management interface callbacks (0381101f) · Commits · e / devices / android_kernel_xiaomi_markw

include/net/bluetooth/hci_core.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -660,6 +660,9 @@ void hci_si_event(struct hci_dev hdev, int type, int dlen, void data);
		/* ----- HCI Sockets ----- */
		void hci_send_to_sock(struct hci_dev hdev, struct sk_buff skb);

		/* Management interface */
		int mgmt_control(struct sock sk, struct msghdr msg, size_t len);

		/* HCI info for socket */
		#define hci_pi(sk) ((struct hci_pinfo *) sk)

net/bluetooth/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -10,4 +10,4 @@ obj-$(CONFIG_BT_BNEP) += bnep/
		obj-$(CONFIG_BT_CMTP) += cmtp/
		obj-$(CONFIG_BT_HIDP) += hidp/

		bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o hci_sock.o hci_sysfs.o lib.o
		bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o hci_sock.o hci_sysfs.o lib.o

net/bluetooth/hci_sock.c

+33 −6

Original line number	Diff line number	Diff line
		@@ -49,6 +49,8 @@
		#include <net/bluetooth/bluetooth.h>
		#include <net/bluetooth/hci_core.h>

		static int enable_mgmt;

		/* ----- HCI socket interface ----- */

		static inline int hci_test_bit(int nr, void *addr)
		@@ -353,25 +355,35 @@ static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long a

		static int hci_sock_bind(struct socket sock, struct sockaddr addr, int addr_len)
		{
		struct sockaddr_hci haddr = (struct sockaddr_hci ) addr;
		struct sockaddr_hci haddr;
		struct sock *sk = sock->sk;
		struct hci_dev *hdev = NULL;
		int err = 0;
		int len, err = 0;

		BT_DBG("sock %p sk %p", sock, sk);

		if (!haddr \|\| haddr->hci_family != AF_BLUETOOTH)
		if (!addr)
		return -EINVAL;

		memset(&haddr, 0, sizeof(haddr));
		len = min_t(unsigned int, sizeof(haddr), addr_len);
		memcpy(&haddr, addr, len);

		if (haddr.hci_family != AF_BLUETOOTH)
		return -EINVAL;

		if (haddr.hci_channel != HCI_CHANNEL_RAW && !enable_mgmt)
		return -EINVAL;

		lock_sock(sk);

		if (hci_pi(sk)->hdev) {
		if (sk->sk_state == BT_BOUND \|\| hci_pi(sk)->hdev) {
		err = -EALREADY;
		goto done;
		}

		if (haddr->hci_dev != HCI_DEV_NONE) {
		hdev = hci_dev_get(haddr->hci_dev);
		if (haddr.hci_dev != HCI_DEV_NONE) {
		hdev = hci_dev_get(haddr.hci_dev);
		if (!hdev) {
		err = -ENODEV;
		goto done;
		@@ -380,6 +392,7 @@ static int hci_sock_bind(struct socket sock, struct sockaddr addr, int addr_le
		atomic_inc(&hdev->promisc);
		}

		hci_pi(sk)->channel = haddr.hci_channel;
		hci_pi(sk)->hdev = hdev;
		sk->sk_state = BT_BOUND;

		@@ -502,6 +515,17 @@ static int hci_sock_sendmsg(struct kiocb iocb, struct socket sock,

		lock_sock(sk);

		switch (hci_pi(sk)->channel) {
		case HCI_CHANNEL_RAW:
		break;
		case HCI_CHANNEL_CONTROL:
		err = mgmt_control(sk, msg, len);
		goto done;
		default:
		err = -EINVAL;
		goto done;
		}

		hdev = hci_pi(sk)->hdev;
		if (!hdev) {
		err = -EBADFD;
		@@ -831,3 +855,6 @@ void __exit hci_sock_cleanup(void)

		proto_unregister(&hci_sk_proto);
		}

		module_param(enable_mgmt, bool, 0644);
		MODULE_PARM_DESC(enable_mgmt, "Enable Management interface");

net/bluetooth/mgmt.c

0 → 100644

+99 −0

Original line number	Diff line number	Diff line
		/*
		BlueZ - Bluetooth protocol stack for Linux
		Copyright (C) 2010 Nokia Corporation

		This program is free software; you can redistribute it and/or modify
		it under the terms of the GNU General Public License version 2 as
		published by the Free Software Foundation;

		THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
		IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
		CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
		WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

		ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
		COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
		SOFTWARE IS DISCLAIMED.
		*/

		/* Bluetooth HCI Management interface */

		#include <asm/uaccess.h>
		#include <asm/unaligned.h>

		#include <net/bluetooth/bluetooth.h>
		#include <net/bluetooth/hci_core.h>
		#include <net/bluetooth/mgmt.h>

		static void cmd_status(struct sock *sk, u16 cmd, u8 status)
		{
		struct sk_buff *skb;
		struct mgmt_hdr *hdr;
		struct mgmt_ev_cmd_status *ev;

		BT_DBG("sock %p", sk);

		skb = alloc_skb(sizeof(hdr) + sizeof(ev), GFP_ATOMIC);
		if (!skb)
		return;

		hdr = (void ) skb_put(skb, sizeof(hdr));

		hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
		hdr->len = cpu_to_le16(sizeof(*ev));

		ev = (void ) skb_put(skb, sizeof(ev));
		ev->status = status;
		put_unaligned_le16(cmd, &ev->opcode);

		if (sock_queue_rcv_skb(sk, skb) < 0)
		kfree_skb(skb);
		}

		int mgmt_control(struct sock sk, struct msghdr msg, size_t msglen)
		{
		unsigned char *buf;
		struct mgmt_hdr *hdr;
		u16 opcode, len;
		int err;

		BT_DBG("got %zu bytes", msglen);

		if (msglen < sizeof(*hdr))
		return -EINVAL;

		buf = kmalloc(msglen, GFP_ATOMIC);
		if (!buf)
		return -ENOMEM;

		if (memcpy_fromiovec(buf, msg->msg_iov, msglen)) {
		err = -EFAULT;
		goto done;
		}

		hdr = (struct mgmt_hdr *) buf;
		opcode = get_unaligned_le16(&hdr->opcode);
		len = get_unaligned_le16(&hdr->len);

		if (len != msglen - sizeof(*hdr)) {
		err = -EINVAL;
		goto done;
		}

		switch (opcode) {
		default:
		BT_DBG("Unknown op %u", opcode);
		cmd_status(sk, opcode, 0x01);
		break;
		}

		err = msglen;

		done:
		kfree(buf);
		return err;
		}