Release 4.11 net/bluetooth/bnep/core.c

/*
   BNEP implementation for Linux Bluetooth stack (BlueZ).
   Copyright (C) 2001-2002 Inventel Systemes
   Written 2001-2002 by
        Clément Moreau <clement.moreau@inventel.fr>
        David Libault  <david.libault@inventel.fr>

   Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>

   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.
*/

#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/file.h>
#include <linux/etherdevice.h>
#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/hci_core.h>

#include "bnep.h"


#define VERSION "1.3"


static bool compress_src = true;

static bool compress_dst = true;

static LIST_HEAD(bnep_session_list);
static DECLARE_RWSEM(bnep_session_sem);



static struct bnep_session *__bnep_get_session(u8 *dst)
{
	struct bnep_session *s;

	BT_DBG("");

	list_for_each_entry(s, &bnep_session_list, list)
		if (ether_addr_equal(dst, s->eh.h_source))
			return s;

	return NULL;
}

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Maksim Krasnyanskiy
45
91.84%
1
33.33%
Luiz Augusto von Dentz
3
6.12%
1
33.33%
Joe Perches
1
2.04%
1
33.33%
Total
49
100.00%
3
100.00%



static void __bnep_link_session(struct bnep_session *s)
{
	list_add(&s->list, &bnep_session_list);
}

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22
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1
100.00%



static void __bnep_unlink_session(struct bnep_session *s)
{
	list_del(&s->list);
}

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19
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1
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static int bnep_send(struct bnep_session *s, void *data, size_t len)
{
	struct socket *sock = s->sock;
	struct kvec iv = { data, len };

	return kernel_sendmsg(sock, &s->msg, &iv, 1, len);
}

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Maksim Krasnyanskiy
47
85.45%
1
33.33%
Al Viro
7
12.73%
1
33.33%
Benjamin LaHaise
1
1.82%
1
33.33%
Total
55
100.00%
3
100.00%



static int bnep_send_rsp(struct bnep_session *s, u8 ctrl, u16 resp)
{
	struct bnep_control_rsp rsp;
	rsp.type = BNEP_CONTROL;
	rsp.ctrl = ctrl;
	rsp.resp = htons(resp);
	return bnep_send(s, &rsp, sizeof(rsp));
}

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56
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1
100.00%

#ifdef CONFIG_BT_BNEP_PROTO_FILTER


static inline void bnep_set_default_proto_filter(struct bnep_session *s)
{
	/* (IPv4, ARP)  */
	s->proto_filter[0].start = ETH_P_IP;
	s->proto_filter[0].end   = ETH_P_ARP;
	/* (RARP, AppleTalk) */
	s->proto_filter[1].start = ETH_P_RARP;
	s->proto_filter[1].end   = ETH_P_AARP;
	/* (IPX, IPv6) */
	s->proto_filter[2].start = ETH_P_IPX;
	s->proto_filter[2].end   = ETH_P_IPV6;
}
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Marcel Holtmann
75
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50.00%
Al Viro
6
7.41%
1
50.00%
Total
81
100.00%
2
100.00%

#endif



static int bnep_ctrl_set_netfilter(struct bnep_session *s, __be16 *data, int len)
{
	int n;

	if (len < 2)
		return -EILSEQ;

	n = get_unaligned_be16(data);
	data++;
	len -= 2;

	if (len < n)
		return -EILSEQ;

	BT_DBG("filter len %d", n);

#ifdef CONFIG_BT_BNEP_PROTO_FILTER
	n /= 4;
	if (n <= BNEP_MAX_PROTO_FILTERS) {
		struct bnep_proto_filter *f = s->proto_filter;
		int i;

		for (i = 0; i < n; i++) {
			f[i].start = get_unaligned_be16(data++);
			f[i].end   = get_unaligned_be16(data++);

			BT_DBG("proto filter start %d end %d",
				f[i].start, f[i].end);
		}

		if (i < BNEP_MAX_PROTO_FILTERS)
			memset(f + i, 0, sizeof(*f));

		if (n == 0)
			bnep_set_default_proto_filter(s);

		bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_SUCCESS);
	} else {
		bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_LIMIT_REACHED);
	}
#else
	bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
#endif
	return 0;
}

Contributors
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Maksim Krasnyanskiy
203
93.12%
3
50.00%
Marcel Holtmann
11
5.05%
1
16.67%
Harvey Harrison
3
1.38%
1
16.67%
Al Viro
1
0.46%
1
16.67%
Total
218
100.00%
6
100.00%



static int bnep_ctrl_set_mcfilter(struct bnep_session *s, u8 *data, int len)
{
	int n;

	if (len < 2)
		return -EILSEQ;

	n = get_unaligned_be16(data);
	data += 2;
	len -= 2;

	if (len < n)
		return -EILSEQ;

	BT_DBG("filter len %d", n);

#ifdef CONFIG_BT_BNEP_MC_FILTER
	n /= (ETH_ALEN * 2);

	if (n > 0) {
		int i;

		s->mc_filter = 0;

		/* Always send broadcast */
		set_bit(bnep_mc_hash(s->dev->broadcast), (ulong *) &s->mc_filter);

		/* Add address ranges to the multicast hash */
		for (; n > 0; n--) {
			u8 a1[6], *a2;

			memcpy(a1, data, ETH_ALEN);
			data += ETH_ALEN;
			a2 = data;
			data += ETH_ALEN;

			BT_DBG("mc filter %pMR -> %pMR", a1, a2);

			/* Iterate from a1 to a2 */
			set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
			while (memcmp(a1, a2, 6) < 0 && s->mc_filter != ~0LL) {
				/* Increment a1 */
				i = 5;
				while (i >= 0 && ++a1[i--] == 0)
					;

				set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
			}
		}
	}

	BT_DBG("mc filter hash 0x%llx", s->mc_filter);

	bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_SUCCESS);
#else
	bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
#endif
	return 0;
}

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Maksim Krasnyanskiy
252
90.97%
4
57.14%
Szymon Janc
23
8.30%
1
14.29%
Harvey Harrison
1
0.36%
1
14.29%
Andrei Emeltchenko
1
0.36%
1
14.29%
Total
277
100.00%
7
100.00%



static int bnep_rx_control(struct bnep_session *s, void *data, int len)
{
	u8  cmd = *(u8 *)data;
	int err = 0;

	data++;
	len--;

	switch (cmd) {
	case BNEP_CMD_NOT_UNDERSTOOD:
	case BNEP_SETUP_CONN_RSP:
	case BNEP_FILTER_NET_TYPE_RSP:
	case BNEP_FILTER_MULTI_ADDR_RSP:
		/* Ignore these for now */
		break;

	case BNEP_FILTER_NET_TYPE_SET:
		err = bnep_ctrl_set_netfilter(s, data, len);
		break;

	case BNEP_FILTER_MULTI_ADDR_SET:
		err = bnep_ctrl_set_mcfilter(s, data, len);
		break;

	case BNEP_SETUP_CONN_REQ:
		/* Successful response should be sent only once */
		if (test_bit(BNEP_SETUP_RESPONSE, &s->flags) &&
		    !test_and_set_bit(BNEP_SETUP_RSP_SENT, &s->flags))
			err = bnep_send_rsp(s, BNEP_SETUP_CONN_RSP,
					    BNEP_SUCCESS);
		else
			err = bnep_send_rsp(s, BNEP_SETUP_CONN_RSP,
					    BNEP_CONN_NOT_ALLOWED);
		break;

	default: {
			u8 pkt[3];
			pkt[0] = BNEP_CONTROL;
			pkt[1] = BNEP_CMD_NOT_UNDERSTOOD;
			pkt[2] = cmd;
			err = bnep_send(s, pkt, sizeof(pkt));
		}
		break;
	}

	return err;
}

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Maksim Krasnyanskiy
135
71.81%
2
40.00%
Grzegorz Kolodziejczyk
38
20.21%
2
40.00%
Vikram Kandukuri
15
7.98%
1
20.00%
Total
188
100.00%
5
100.00%



static int bnep_rx_extension(struct bnep_session *s, struct sk_buff *skb)
{
	struct bnep_ext_hdr *h;
	int err = 0;

	do {
		h = (void *) skb->data;
		if (!skb_pull(skb, sizeof(*h))) {
			err = -EILSEQ;
			break;
		}

		BT_DBG("type 0x%x len %d", h->type, h->len);

		switch (h->type & BNEP_TYPE_MASK) {
		case BNEP_EXT_CONTROL:
			bnep_rx_control(s, skb->data, skb->len);
			break;

		default:
			/* Unknown extension, skip it. */
			break;
		}

		if (!skb_pull(skb, h->len)) {
			err = -EILSEQ;
			break;
		}
	} while (!err && (h->type & BNEP_EXT_HEADER));

	return err;
}

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100.00%


static u8 __bnep_rx_hlen[] = {
	ETH_HLEN,     /* BNEP_GENERAL */
	0,            /* BNEP_CONTROL */
	2,            /* BNEP_COMPRESSED */
	ETH_ALEN + 2, /* BNEP_COMPRESSED_SRC_ONLY */
	ETH_ALEN + 2  /* BNEP_COMPRESSED_DST_ONLY */
};



static int bnep_rx_frame(struct bnep_session *s, struct sk_buff *skb)
{
	struct net_device *dev = s->dev;
	struct sk_buff *nskb;
	u8 type, ctrl_type;

	dev->stats.rx_bytes += skb->len;

	type = *(u8 *) skb->data;
	skb_pull(skb, 1);
	ctrl_type = *(u8 *)skb->data;

	if ((type & BNEP_TYPE_MASK) >= sizeof(__bnep_rx_hlen))
		goto badframe;

	if ((type & BNEP_TYPE_MASK) == BNEP_CONTROL) {
		if (bnep_rx_control(s, skb->data, skb->len) < 0) {
			dev->stats.tx_errors++;
			kfree_skb(skb);
			return 0;
		}

		if (!(type & BNEP_EXT_HEADER)) {
			kfree_skb(skb);
			return 0;
		}

		/* Verify and pull ctrl message since it's already processed */
		switch (ctrl_type) {
		case BNEP_SETUP_CONN_REQ:
			/* Pull: ctrl type (1 b), len (1 b), data (len bytes) */
			if (!skb_pull(skb, 2 + *(u8 *)(skb->data + 1) * 2))
				goto badframe;
			break;
		case BNEP_FILTER_MULTI_ADDR_SET:
		case BNEP_FILTER_NET_TYPE_SET:
			/* Pull: ctrl type (1 b), len (2 b), data (len bytes) */
			if (!skb_pull(skb, 3 + *(u16 *)(skb->data + 1) * 2))
				goto badframe;
			break;
		default:
			kfree_skb(skb);
			return 0;
		}
	} else {
		skb_reset_mac_header(skb);

		/* Verify and pull out header */
		if (!skb_pull(skb, __bnep_rx_hlen[type & BNEP_TYPE_MASK]))
			goto badframe;

		s->eh.h_proto = get_unaligned((__be16 *) (skb->data - 2));
	}

	if (type & BNEP_EXT_HEADER) {
		if (bnep_rx_extension(s, skb) < 0)
			goto badframe;
	}

	/* Strip 802.1p header */
	if (ntohs(s->eh.h_proto) == ETH_P_8021Q) {
		if (!skb_pull(skb, 4))
			goto badframe;
		s->eh.h_proto = get_unaligned((__be16 *) (skb->data - 2));
	}

	/* We have to alloc new skb and copy data here :(. Because original skb
         * may not be modified and because of the alignment requirements. */
	nskb = alloc_skb(2 + ETH_HLEN + skb->len, GFP_KERNEL);
	if (!nskb) {
		dev->stats.rx_dropped++;
		kfree_skb(skb);
		return -ENOMEM;
	}
	skb_reserve(nskb, 2);

	/* Decompress header and construct ether frame */
	switch (type & BNEP_TYPE_MASK) {
	case BNEP_COMPRESSED:
		memcpy(__skb_put(nskb, ETH_HLEN), &s->eh, ETH_HLEN);
		break;

	case BNEP_COMPRESSED_SRC_ONLY:
		memcpy(__skb_put(nskb, ETH_ALEN), s->eh.h_dest, ETH_ALEN);
		memcpy(__skb_put(nskb, ETH_ALEN), skb_mac_header(skb), ETH_ALEN);
		put_unaligned(s->eh.h_proto, (__be16 *) __skb_put(nskb, 2));
		break;

	case BNEP_COMPRESSED_DST_ONLY:
		memcpy(__skb_put(nskb, ETH_ALEN), skb_mac_header(skb),
								ETH_ALEN);
		memcpy(__skb_put(nskb, ETH_ALEN + 2), s->eh.h_source,
								ETH_ALEN + 2);
		break;

	case BNEP_GENERAL:
		memcpy(__skb_put(nskb, ETH_ALEN * 2), skb_mac_header(skb),
								ETH_ALEN * 2);
		put_unaligned(s->eh.h_proto, (__be16 *) __skb_put(nskb, 2));
		break;
	}

	skb_copy_from_linear_data(skb, __skb_put(nskb, skb->len), skb->len);
	kfree_skb(skb);

	dev->stats.rx_packets++;
	nskb->ip_summed = CHECKSUM_NONE;
	nskb->protocol  = eth_type_trans(nskb, dev);
	netif_rx_ni(nskb);
	return 0;

badframe:
	dev->stats.rx_errors++;
	kfree_skb(skb);
	return 0;
}

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Maksim Krasnyanskiy
492
75.11%
2
18.18%
Grzegorz Kolodziejczyk
133
20.31%
1
9.09%
Arnaldo Carvalho de Melo
15
2.29%
3
27.27%
Szymon Janc
5
0.76%
1
9.09%
Stephen Hemminger
4
0.61%
1
9.09%
Al Viro
4
0.61%
1
9.09%
Eldad Zack
1
0.15%
1
9.09%
Marcel Holtmann
1
0.15%
1
9.09%
Total
655
100.00%
11
100.00%


static u8 __bnep_tx_types[] = {
	BNEP_GENERAL,
	BNEP_COMPRESSED_SRC_ONLY,
	BNEP_COMPRESSED_DST_ONLY,
	BNEP_COMPRESSED
};



static int bnep_tx_frame(struct bnep_session *s, struct sk_buff *skb)
{
	struct ethhdr *eh = (void *) skb->data;
	struct socket *sock = s->sock;
	struct kvec iv[3];
	int len = 0, il = 0;
	u8 type = 0;

	BT_DBG("skb %p dev %p type %d", skb, skb->dev, skb->pkt_type);

	if (!skb->dev) {
		/* Control frame sent by us */
		goto send;
	}

	iv[il++] = (struct kvec) { &type, 1 };
	len++;

	if (compress_src && ether_addr_equal(eh->h_dest, s->eh.h_source))
		type |= 0x01;

	if (compress_dst && ether_addr_equal(eh->h_source, s->eh.h_dest))
		type |= 0x02;

	if (type)
		skb_pull(skb, ETH_ALEN * 2);

	type = __bnep_tx_types[type];
	switch (type) {
	case BNEP_COMPRESSED_SRC_ONLY:
		iv[il++] = (struct kvec) { eh->h_source, ETH_ALEN };
		len += ETH_ALEN;
		break;

	case BNEP_COMPRESSED_DST_ONLY:
		iv[il++] = (struct kvec) { eh->h_dest, ETH_ALEN };
		len += ETH_ALEN;
		break;
	}

send:
	iv[il++] = (struct kvec) { skb->data, skb->len };
	len += skb->len;

	/* FIXME: linearize skb */
	{
		len = kernel_sendmsg(sock, &s->msg, iv, il, len);
	}
	kfree_skb(skb);

	if (len > 0) {
		s->dev->stats.tx_bytes += len;
		s->dev->stats.tx_packets++;
		return 0;
	}

	return len;
}

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Maksim Krasnyanskiy
290
92.36%
1
16.67%
Al Viro
10
3.18%
1
16.67%
Marcel Holtmann
4
1.27%
1
16.67%
David S. Miller
4
1.27%
1
16.67%
Stephen Hemminger
4
1.27%
1
16.67%
Joe Perches
2
0.64%
1
16.67%
Total
314
100.00%
6
100.00%



static int bnep_session(void *arg)
{
	struct bnep_session *s = arg;
	struct net_device *dev = s->dev;
	struct sock *sk = s->sock->sk;
	struct sk_buff *skb;
	wait_queue_t wait;

	BT_DBG("");

	set_user_nice(current, -15);

	init_waitqueue_entry(&wait, current);
	add_wait_queue(sk_sleep(sk), &wait);
	while (1) {
		set_current_state(TASK_INTERRUPTIBLE);

		if (atomic_read(&s->terminate))
			break;
		/* RX */
		while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
			skb_orphan(skb);
			if (!skb_linearize(skb))
				bnep_rx_frame(s, skb);
			else
				kfree_skb(skb);
		}

		if (sk->sk_state != BT_CONNECTED)
			break;

		/* TX */
		while ((skb = skb_dequeue(&sk->sk_write_queue)))
			if (bnep_tx_frame(s, skb))
				break;
		netif_wake_queue(dev);

		schedule();
	}
	__set_current_state(TASK_RUNNING);
	remove_wait_queue(sk_sleep(sk), &wait);

	/* Cleanup session */
	down_write(&bnep_session_sem);

	/* Delete network device */
	unregister_netdev(dev);

	/* Wakeup user-space polling for socket errors */
	s->sock->sk->sk_err = EUNATCH;

	wake_up_interruptible(sk_sleep(s->sock->sk));

	/* Release the socket */
	fput(s->sock->file);

	__bnep_unlink_session(s);

	up_write(&bnep_session_sem);
	free_netdev(dev);
	module_put_and_exit(0);
	return 0;
}

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Maksim Krasnyanskiy
201
74.44%
3
25.00%
Marcel Holtmann
20
7.41%
1
8.33%
Mat Martineau
14
5.19%
1
8.33%
Peter Hurley
13
4.81%
2
16.67%
Eric Dumazet
9
3.33%
1
8.33%
Arnaldo Carvalho de Melo
5
1.85%
1
8.33%
David Herrmann
5
1.85%
1
8.33%
Szymon Janc
2
0.74%
1
8.33%
Al Viro
1
0.37%
1
8.33%
Total
270
100.00%
12
100.00%



static struct device *bnep_get_device(struct bnep_session *session)
{
	struct l2cap_conn *conn = l2cap_pi(session->sock->sk)->chan->conn;

	if (!conn || !conn->hcon)
		return NULL;

	return &conn->hcon->dev;
}

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80.77%
2
66.67%
Johan Hedberg
10
19.23%
1
33.33%
Total
52
100.00%
3
100.00%


static struct device_type bnep_type = {
	.name	= "bluetooth",
};



int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock)
{
	u32 valid_flags = BIT(BNEP_SETUP_RESPONSE);
	struct net_device *dev;
	struct bnep_session *s, *ss;
	u8 dst[ETH_ALEN], src[ETH_ALEN];
	int err;

	BT_DBG("");

	if (!l2cap_is_socket(sock))
		return -EBADFD;

	if (req->flags & ~valid_flags)
		return -EINVAL;

	baswap((void *) dst, &l2cap_pi(sock->sk)->chan->dst);
	baswap((void *) src, &l2cap_pi(sock->sk)->chan->src);

	/* session struct allocated as private part of net_device */
	dev = alloc_netdev(sizeof(struct bnep_session),
			   (*req->device) ? req->device : "bnep%d",
			   NET_NAME_UNKNOWN,
			   bnep_net_setup);
	if (!dev)
		return -ENOMEM;

	down_write(&bnep_session_sem);

	ss = __bnep_get_session(dst);
	if (ss && ss->state == BT_CONNECTED) {
		err = -EEXIST;
		goto failed;
	}

	s = netdev_priv(dev);

	/* This is rx header therefore addresses are swapped.
         * ie. eh.h_dest is our local address. */
	memcpy(s->eh.h_dest,   &src, ETH_ALEN);
	memcpy(s->eh.h_source, &dst, ETH_ALEN);
	memcpy(dev->dev_addr, s->eh.h_dest, ETH_ALEN);

	s->dev   = dev;
	s->sock  = sock;
	s->role  = req->role;
	s->state = BT_CONNECTED;
	s->flags = req->flags;

	s->msg.msg_flags = MSG_NOSIGNAL;

#ifdef CONFIG_BT_BNEP_MC_FILTER
	/* Set default mc filter to not filter out any mc addresses
         * as defined in the BNEP specification (revision 0.95a)
         * http://grouper.ieee.org/groups/802/15/Bluetooth/BNEP.pdf
         */
	s->mc_filter = ~0LL;
#endif

#ifdef CONFIG_BT_BNEP_PROTO_FILTER
	/* Set default protocol filter */
	bnep_set_default_proto_filter(s);
#endif

	SET_NETDEV_DEV(dev, bnep_get_device(s));
	SET_NETDEV_DEVTYPE(dev, &bnep_type);

	err = register_netdev(dev);
	if (err)
		goto failed;

	__bnep_link_session(s);

	__module_get(THIS_MODULE);
	s->task = kthread_run(bnep_session, s, "kbnepd %s", dev->name);
	if (IS_ERR(s->task)) {
		/* Session thread start failed, gotta cleanup. */
		module_put(THIS_MODULE);
		unregister_netdev(dev);
		__bnep_unlink_session(s);
		err = PTR_ERR(s->task);
		goto failed;
	}

	up_write(&bnep_session_sem);
	strcpy(req->device, dev->name);
	return 0;

failed:
	up_write(&bnep_session_sem);
	free_netdev(dev);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
331
74.55%
4
20.00%
Marcel Holtmann
43
9.68%
6
30.00%
Szymon Janc
25
5.63%
2
10.00%
Al Viro
13
2.93%
2
10.00%
Grzegorz Kolodziejczyk
12
2.70%
1
5.00%
David Herrmann
10
2.25%
1
5.00%
Danny Schweizer
4
0.90%
1
5.00%
Wang Chen
3
0.68%
1
5.00%
Tom Gundersen
2
0.45%
1
5.00%
Tobias Klauser
1
0.23%
1
5.00%
Total
444
100.00%
20
100.00%



int bnep_del_connection(struct bnep_conndel_req *req)
{
	u32 valid_flags = 0;
	struct bnep_session *s;
	int  err = 0;

	BT_DBG("");

	if (req->flags & ~valid_flags)
		return -EINVAL;

	down_read(&bnep_session_sem);

	s = __bnep_get_session(req->dst);
	if (s) {
		atomic_inc(&s->terminate);
		wake_up_process(s->task);
	} else
		err = -ENOENT;

	up_read(&bnep_session_sem);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
62
65.96%
1
16.67%
Marcel Holtmann
19
20.21%
2
33.33%
Peter Hurley
11
11.70%
1
16.67%
Eric Dumazet
1
1.06%
1
16.67%
Szymon Janc
1
1.06%
1
16.67%
Total
94
100.00%
6
100.00%



static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s)
{
	u32 valid_flags = BIT(BNEP_SETUP_RESPONSE);

	memset(ci, 0, sizeof(*ci));
	memcpy(ci->dst, s->eh.h_source, ETH_ALEN);
	strcpy(ci->device, s->dev->name);
	ci->flags = s->flags & valid_flags;
	ci->state = s->state;
	ci->role  = s->role;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
67
73.63%
2
33.33%
Vasiliy Kulikov
13
14.29%
1
16.67%
Marcel Holtmann
7
7.69%
2
33.33%
Grzegorz Kolodziejczyk
4
4.40%
1
16.67%
Total
91
100.00%
6
100.00%



int bnep_get_connlist(struct bnep_connlist_req *req)
{
	struct bnep_session *s;
	int err = 0, n = 0;

	down_read(&bnep_session_sem);

	list_for_each_entry(s, &bnep_session_list, list) {
		struct bnep_conninfo ci;

		__bnep_copy_ci(&ci, s);

		if (copy_to_user(req->ci, &ci, sizeof(ci))) {
			err = -EFAULT;
			break;
		}

		if (++n >= req->cnum)
			break;

		req->ci++;
	}
	req->cnum = n;

	up_read(&bnep_session_sem);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
98
91.59%
1
33.33%
Luiz Augusto von Dentz
6
5.61%
1
33.33%
Marcel Holtmann
3
2.80%
1
33.33%
Total
107
100.00%
3
100.00%



int bnep_get_conninfo(struct bnep_conninfo *ci)
{
	struct bnep_session *s;
	int err = 0;

	down_read(&bnep_session_sem);

	s = __bnep_get_session(ci->dst);
	if (s)
		__bnep_copy_ci(ci, s);
	else
		err = -ENOENT;

	up_read(&bnep_session_sem);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
59
96.72%
1
50.00%
Marcel Holtmann
2
3.28%
1
50.00%
Total
61
100.00%
2
100.00%



static int __init bnep_init(void)
{
	char flt[50] = "";

#ifdef CONFIG_BT_BNEP_PROTO_FILTER
	strcat(flt, "protocol ");
#endif

#ifdef CONFIG_BT_BNEP_MC_FILTER
	strcat(flt, "multicast");
#endif

	BT_INFO("BNEP (Ethernet Emulation) ver %s", VERSION);
	if (flt[0])
		BT_INFO("BNEP filters: %s", flt);

	bnep_sock_init();
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
60
88.24%
2
50.00%
Marcel Holtmann
8
11.76%
2
50.00%
Total
68
100.00%
4
100.00%



static void __exit bnep_exit(void)
{
	bnep_sock_cleanup();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
11
91.67%
1
50.00%
Marcel Holtmann
1
8.33%
1
50.00%
Total
12
100.00%
2
100.00%


module_init(bnep_init);

module_exit(bnep_exit);

module_param(compress_src, bool, 0644);
MODULE_PARM_DESC(compress_src, "Compress sources headers");

module_param(compress_dst, bool, 0644);
MODULE_PARM_DESC(compress_dst, "Compress destination headers");

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth BNEP ver " VERSION);

MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_ALIAS("bt-proto-4");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
2686
77.72%
7
12.07%
Marcel Holtmann
315
9.11%
14
24.14%
Grzegorz Kolodziejczyk
187
5.41%
3
5.17%
Szymon Janc
59
1.71%
3
5.17%
Al Viro
42
1.22%
5
8.62%
Peter Hurley
24
0.69%
2
3.45%
Arnaldo Carvalho de Melo
20
0.58%
4
6.90%
Vikram Kandukuri
15
0.43%
1
1.72%
David Herrmann
15
0.43%
1
1.72%
Mat Martineau
14
0.41%
1
1.72%
Vasiliy Kulikov
13
0.38%
1
1.72%
Eric Dumazet
10
0.29%
1
1.72%
Johan Hedberg
10
0.29%
1
1.72%
Luiz Augusto von Dentz
9
0.26%
1
1.72%
Stephen Hemminger
8
0.23%
1
1.72%
Harvey Harrison
4
0.12%
1
1.72%
Danny Schweizer
4
0.12%
1
1.72%
Rusty Russell
4
0.12%
1
1.72%
David S. Miller
4
0.12%
1
1.72%
Joe Perches
3
0.09%
1
1.72%
Wang Chen
3
0.09%
1
1.72%
Tom Gundersen
2
0.06%
1
1.72%
Jan Engelhardt
1
0.03%
1
1.72%
Tobias Klauser
1
0.03%
1
1.72%
Eldad Zack
1
0.03%
1
1.72%
Andrei Emeltchenko
1
0.03%
1
1.72%
Benjamin LaHaise
1
0.03%
1
1.72%
Total
3456
100.00%
58
100.00%
Directory: net/bluetooth/bnep

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