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URL https://opencores.org/ocsvn/or1k/or1k/trunk

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  • This comparison shows the changes necessary to convert path 
    /or1k/trunk/linux/linux-2.4/net/bluetooth/bnep
    from Rev 1275 to Rev 1765
    ↔ Reverse comparison
  •

Rev 1275 → Rev 1765

/sock.c
0,0 → 1,210
/*
BNEP implementation for Linux Bluetooth stack (BlueZ).
Copyright (C) 2001-2002 Inventel Systemes
Written 2001-2002 by
David Libault <david.libault@inventel.fr>
 
Copyright (C) 2002 Maxim Krasnyanskiy <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.
*/
 
/*
* $Id: sock.c,v 1.1.1.1 2004-04-15 01:17:08 phoenix Exp $
*/
 
#include <linux/config.h>
#include <linux/module.h>
 
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/fcntl.h>
#include <linux/skbuff.h>
#include <linux/socket.h>
#include <linux/ioctl.h>
#include <linux/file.h>
#include <net/sock.h>
 
#include <asm/system.h>
#include <asm/uaccess.h>
 
#include "bnep.h"
 
#ifndef CONFIG_BLUEZ_BNEP_DEBUG
#undef BT_DBG
#define BT_DBG( A... )
#endif
 
static int bnep_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
 
BT_DBG("sock %p sk %p", sock, sk);
 
if (!sk)
return 0;
 
sock_orphan(sk);
sock_put(sk);
 
MOD_DEC_USE_COUNT;
return 0;
}
 
static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct bnep_connlist_req cl;
struct bnep_connadd_req ca;
struct bnep_conndel_req cd;
struct bnep_conninfo ci;
struct socket *nsock;
int err;
 
BT_DBG("cmd %x arg %lx", cmd, arg);
 
switch (cmd) {
case BNEPCONNADD:
if (!capable(CAP_NET_ADMIN))
return -EACCES;
 
if (copy_from_user(&ca, (void *) arg, sizeof(ca)))
return -EFAULT;
nsock = sockfd_lookup(ca.sock, &err);
if (!nsock)
return err;
 
if (nsock->sk->state != BT_CONNECTED) {
fput(nsock->file);
return -EBADFD;
}
 
err = bnep_add_connection(&ca, nsock);
if (!err) {
if (copy_to_user((void *) arg, &ca, sizeof(ca)))
err = -EFAULT;
} else
fput(nsock->file);
 
return err;
case BNEPCONNDEL:
if (!capable(CAP_NET_ADMIN))
return -EACCES;
 
if (copy_from_user(&cd, (void *) arg, sizeof(cd)))
return -EFAULT;
return bnep_del_connection(&cd);
 
case BNEPGETCONNLIST:
if (copy_from_user(&cl, (void *) arg, sizeof(cl)))
return -EFAULT;
 
if (cl.cnum <= 0)
return -EINVAL;
err = bnep_get_connlist(&cl);
if (!err && copy_to_user((void *) arg, &cl, sizeof(cl)))
return -EFAULT;
 
return err;
 
case BNEPGETCONNINFO:
if (copy_from_user(&ci, (void *) arg, sizeof(ci)))
return -EFAULT;
 
err = bnep_get_conninfo(&ci);
if (!err && copy_to_user((void *) arg, &ci, sizeof(ci)))
return -EFAULT;
 
return err;
 
default:
return -EINVAL;
}
 
return 0;
}
 
static struct proto_ops bnep_sock_ops = {
family: PF_BLUETOOTH,
release: bnep_sock_release,
ioctl: bnep_sock_ioctl,
bind: sock_no_bind,
getname: sock_no_getname,
sendmsg: sock_no_sendmsg,
recvmsg: sock_no_recvmsg,
poll: sock_no_poll,
listen: sock_no_listen,
shutdown: sock_no_shutdown,
setsockopt: sock_no_setsockopt,
getsockopt: sock_no_getsockopt,
connect: sock_no_connect,
socketpair: sock_no_socketpair,
accept: sock_no_accept,
mmap: sock_no_mmap
};
 
static int bnep_sock_create(struct socket *sock, int protocol)
{
struct sock *sk;
 
BT_DBG("sock %p", sock);
 
if (sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
 
sock->ops = &bnep_sock_ops;
 
if (!(sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, 1)))
return -ENOMEM;
 
MOD_INC_USE_COUNT;
 
sock->state = SS_UNCONNECTED;
sock_init_data(sock, sk);
 
sk->destruct = NULL;
sk->protocol = protocol;
 
return 0;
}
 
static struct net_proto_family bnep_sock_family_ops = {
family: PF_BLUETOOTH,
create: bnep_sock_create
};
 
int bnep_sock_init(void)
{
bluez_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops);
return 0;
}
 
int bnep_sock_cleanup(void)
{
if (bluez_sock_unregister(BTPROTO_BNEP))
BT_ERR("Can't unregister BNEP socket");
return 0;
}
/Makefile.lib
0,0 → 1,210
obj-$(CONFIG_BLUEZ_BNEP) += crc32.o
/netdev.c
0,0 → 1,254
/*
BNEP implementation for Linux Bluetooth stack (BlueZ).
Copyright (C) 2001-2002 Inventel Systemes
Written 2001-2002 by
 
David Libault <david.libault@inventel.fr>
 
Copyright (C) 2002 Maxim Krasnyanskiy <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.
*/
 
/*
* $Id: netdev.c,v 1.1.1.1 2004-04-15 01:17:08 phoenix Exp $
*/
 
#include <linux/config.h>
#include <linux/module.h>
 
#include <linux/socket.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/wait.h>
 
#include <asm/unaligned.h>
 
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
 
#include "bnep.h"
 
#ifndef CONFIG_BLUEZ_BNEP_DEBUG
#undef BT_DBG
#define BT_DBG( A... )
#endif
 
#define BNEP_TX_QUEUE_LEN 20
 
static int bnep_net_open(struct net_device *dev)
{
netif_start_queue(dev);
return 0;
}
 
static int bnep_net_close(struct net_device *dev)
{
netif_stop_queue(dev);
return 0;
}
 
static struct net_device_stats *bnep_net_get_stats(struct net_device *dev)
{
struct bnep_session *s = dev->priv;
return &s->stats;
}
 
static void bnep_net_set_mc_list(struct net_device *dev)
{
#ifdef CONFIG_BLUEZ_BNEP_MC_FILTER
struct bnep_session *s = dev->priv;
struct sock *sk = s->sock->sk;
struct bnep_set_filter_req *r;
struct sk_buff *skb;
int size;
 
BT_DBG("%s mc_count %d", dev->name, dev->mc_count);
 
size = sizeof(*r) + (BNEP_MAX_MULTICAST_FILTERS + 1) * ETH_ALEN * 2;
skb = alloc_skb(size, GFP_ATOMIC);
if (!skb) {
BT_ERR("%s Multicast list allocation failed", dev->name);
return;
}
 
r = (void *) skb->data;
__skb_put(skb, sizeof(*r));
 
r->type = BNEP_CONTROL;
r->ctrl = BNEP_FILTER_MULTI_ADDR_SET;
 
if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
u8 start[ETH_ALEN] = { 0x01 };
 
/* Request all addresses */
memcpy(__skb_put(skb, ETH_ALEN), start, ETH_ALEN);
memcpy(__skb_put(skb, ETH_ALEN), dev->broadcast, ETH_ALEN);
r->len = htons(ETH_ALEN * 2);
} else {
struct dev_mc_list *dmi = dev->mc_list;
int i, len = skb->len;
 
if (dev->flags & IFF_BROADCAST) {
memcpy(__skb_put(skb, ETH_ALEN), dev->broadcast, ETH_ALEN);
memcpy(__skb_put(skb, ETH_ALEN), dev->broadcast, ETH_ALEN);
}
/* FIXME: We should group addresses here. */
 
for (i = 0; i < dev->mc_count && i < BNEP_MAX_MULTICAST_FILTERS; i++) {
memcpy(__skb_put(skb, ETH_ALEN), dmi->dmi_addr, ETH_ALEN);
memcpy(__skb_put(skb, ETH_ALEN), dmi->dmi_addr, ETH_ALEN);
dmi = dmi->next;
}
r->len = htons(skb->len - len);
}
 
skb_queue_tail(&sk->write_queue, skb);
wake_up_interruptible(sk->sleep);
#endif
}
 
static int bnep_net_set_mac_addr(struct net_device *dev, void *arg)
{
BT_DBG("%s", dev->name);
return 0;
}
 
static void bnep_net_timeout(struct net_device *dev)
{
BT_DBG("net_timeout");
netif_wake_queue(dev);
}
 
static int bnep_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
return -EINVAL;
}
 
#ifdef CONFIG_BLUEZ_BNEP_MC_FILTER
static inline int bnep_net_mc_filter(struct sk_buff *skb, struct bnep_session *s)
{
struct ethhdr *eh = (void *) skb->data;
 
if ((eh->h_dest[0] & 1) && !test_bit(bnep_mc_hash(eh->h_dest), &s->mc_filter)) {
BT_DBG("BNEP: filtered skb %p, dst %.2x:%.2x:%.2x:%.2x:%.2x:%.2x", skb,
eh->h_dest[0], eh->h_dest[1], eh->h_dest[2],
eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]);
return 1;
}
return 0;
}
#endif
 
#ifdef CONFIG_BLUEZ_BNEP_PROTO_FILTER
/* Determine ether protocol. Based on eth_type_trans. */
static inline u16 bnep_net_eth_proto(struct sk_buff *skb)
{
struct ethhdr *eh = (void *) skb->data;
if (ntohs(eh->h_proto) >= 1536)
return eh->h_proto;
if (get_unaligned((u16 *) skb->data) == 0xFFFF)
return htons(ETH_P_802_3);
return htons(ETH_P_802_2);
}
 
static inline int bnep_net_proto_filter(struct sk_buff *skb, struct bnep_session *s)
{
u16 proto = bnep_net_eth_proto(skb);
struct bnep_proto_filter *f = s->proto_filter;
int i;
for (i = 0; i < BNEP_MAX_PROTO_FILTERS && f[i].end; i++) {
if (proto >= f[i].start && proto <= f[i].end)
return 0;
}
 
BT_DBG("BNEP: filtered skb %p, proto 0x%.4x", skb, proto);
return 1;
}
#endif
 
static int bnep_net_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bnep_session *s = dev->priv;
struct sock *sk = s->sock->sk;
 
BT_DBG("skb %p, dev %p", skb, dev);
 
#ifdef CONFIG_BLUEZ_BNEP_MC_FILTER
if (bnep_net_mc_filter(skb, s)) {
kfree_skb(skb);
return 0;
}
#endif
#ifdef CONFIG_BLUEZ_BNEP_PROTO_FILTER
if (bnep_net_proto_filter(skb, s)) {
kfree_skb(skb);
return 0;
}
#endif
/*
* We cannot send L2CAP packets from here as we are potentially in a bh.
* So we have to queue them and wake up session thread which is sleeping
* on the sk->sleep.
*/
dev->trans_start = jiffies;
skb_queue_tail(&sk->write_queue, skb);
wake_up_interruptible(sk->sleep);
 
if (skb_queue_len(&sk->write_queue) >= BNEP_TX_QUEUE_LEN) {
BT_DBG("tx queue is full");
 
/* Stop queuing.
* Session thread will do netif_wake_queue() */
netif_stop_queue(dev);
}
 
return 0;
}
 
int bnep_net_init(struct net_device *dev)
{
struct bnep_session *s = dev->priv;
 
memcpy(dev->dev_addr, s->eh.h_dest, ETH_ALEN);
dev->addr_len = ETH_ALEN;
 
ether_setup(dev);
 
dev->open = bnep_net_open;
dev->stop = bnep_net_close;
dev->hard_start_xmit = bnep_net_xmit;
dev->get_stats = bnep_net_get_stats;
dev->do_ioctl = bnep_net_ioctl;
dev->set_mac_address = bnep_net_set_mac_addr;
dev->set_multicast_list = bnep_net_set_mc_list;
 
dev->watchdog_timeo = HZ * 2;
dev->tx_timeout = bnep_net_timeout;
 
return 0;
}
/core.c
0,0 → 1,706
/*
BNEP implementation for Linux Bluetooth stack (BlueZ).
Copyright (C) 2001-2002 Inventel Systemes
Written 2001-2002 by
 
David Libault <david.libault@inventel.fr>
 
Copyright (C) 2002 Maxim Krasnyanskiy <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.
*/
 
/*
* $Id: core.c,v 1.1.1.1 2004-04-15 01:17:08 phoenix Exp $
*/
 
#define __KERNEL_SYSCALLS__
 
#include <linux/config.h>
#include <linux/module.h>
 
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/init.h>
#include <linux/wait.h>
#include <linux/errno.h>
#include <linux/smp_lock.h>
#include <linux/net.h>
#include <net/sock.h>
 
#include <linux/socket.h>
#include <linux/file.h>
 
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
 
#include <asm/unaligned.h>
 
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/l2cap.h>
 
#include "bnep.h"
 
#ifndef CONFIG_BLUEZ_BNEP_DEBUG
#undef BT_DBG
#define BT_DBG(D...)
#endif
 
#define VERSION "1.1"
 
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;
struct list_head *p;
 
BT_DBG("");
 
list_for_each(p, &bnep_session_list) {
s = list_entry(p, struct bnep_session, list);
if (!memcmp(dst, s->eh.h_source, ETH_ALEN))
return s;
}
return NULL;
}
 
static void __bnep_link_session(struct bnep_session *s)
{
MOD_INC_USE_COUNT;
list_add(&s->list, &bnep_session_list);
}
 
static void __bnep_unlink_session(struct bnep_session *s)
{
list_del(&s->list);
MOD_DEC_USE_COUNT;
}
 
static int bnep_send(struct bnep_session *s, void *data, size_t len)
{
struct socket *sock = s->sock;
struct iovec iv = { data, len };
s->msg.msg_iov = &iv;
s->msg.msg_iovlen = 1;
return sock->ops->sendmsg(sock, &s->msg, len, NULL);
}
 
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));
}
 
static int bnep_ctrl_set_netfilter(struct bnep_session *s, u16 *data, int len)
{
int n;
 
if (len < 2)
return -EILSEQ;
n = ntohs(get_unaligned(data));
data++; len -= 2;
 
if (len < n)
return -EILSEQ;
 
BT_DBG("filter len %d", n);
 
#ifdef CONFIG_BLUEZ_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(data++);
f[i].end = get_unaligned(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));
 
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;
}
 
static int bnep_ctrl_set_mcfilter(struct bnep_session *s, u8 *data, int len)
{
int n;
 
if (len < 2)
return -EILSEQ;
n = ntohs(get_unaligned((u16 *) data));
data += 2; len -= 2;
 
if (len < n)
return -EILSEQ;
 
BT_DBG("filter len %d", n);
 
#ifdef CONFIG_BLUEZ_BNEP_MC_FILTER
n /= (ETH_ALEN * 2);
 
if (n > 0) {
s->mc_filter = 0;
 
/* Always send broadcast */
set_bit(bnep_mc_hash(s->dev.broadcast), &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 %s -> %s",
batostr((void *) a1), batostr((void *) a2));
 
#define INCA(a) { int i = 5; while (i >=0 && ++a[i--] == 0); }
 
/* Iterate from a1 to a2 */
set_bit(bnep_mc_hash(a1), &s->mc_filter);
while (memcmp(a1, a2, 6) < 0 && s->mc_filter != ~0LL) {
INCA(a1);
set_bit(bnep_mc_hash(a1), &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;
}
 
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_REQ:
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;
 
default: {
u8 pkt[3];
pkt[0] = BNEP_CONTROL;
pkt[1] = BNEP_CMD_NOT_UNDERSTOOD;
pkt[2] = cmd;
bnep_send(s, pkt, sizeof(pkt));
}
break;
}
 
return err;
}
 
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;
}
 
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 */
};
#define BNEP_RX_TYPES (sizeof(__bnep_rx_hlen) - 1)
 
static inline int bnep_rx_frame(struct bnep_session *s, struct sk_buff *skb)
{
struct net_device *dev = &s->dev;
struct sk_buff *nskb;
u8 type;
 
dev->last_rx = jiffies;
s->stats.rx_bytes += skb->len;
 
type = *(u8 *) skb->data; skb_pull(skb, 1);
 
if ((type & BNEP_TYPE_MASK) > BNEP_RX_TYPES)
goto badframe;
if ((type & BNEP_TYPE_MASK) == BNEP_CONTROL) {
bnep_rx_control(s, skb->data, skb->len);
kfree_skb(skb);
return 0;
}
 
skb->mac.raw = skb->data;
 
/* Verify and pull out header */
if (!skb_pull(skb, __bnep_rx_hlen[type & BNEP_TYPE_MASK]))
goto badframe;
 
s->eh.h_proto = get_unaligned((u16 *) (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) == 0x8100) {
if (!skb_pull(skb, 4))
goto badframe;
s->eh.h_proto = get_unaligned((u16 *) (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) {
s->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.raw, ETH_ALEN);
put_unaligned(s->eh.h_proto, (u16 *) __skb_put(nskb, 2));
break;
 
case BNEP_COMPRESSED_DST_ONLY:
memcpy(__skb_put(nskb, ETH_ALEN), skb->mac.raw, 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.raw, ETH_ALEN * 2);
put_unaligned(s->eh.h_proto, (u16 *) __skb_put(nskb, 2));
break;
}
 
memcpy(__skb_put(nskb, skb->len), skb->data, skb->len);
kfree_skb(skb);
s->stats.rx_packets++;
nskb->dev = dev;
nskb->ip_summed = CHECKSUM_UNNECESSARY;
nskb->protocol = eth_type_trans(nskb, dev);
netif_rx_ni(nskb);
return 0;
 
badframe:
s->stats.rx_errors++;
kfree_skb(skb);
return 0;
}
 
static u8 __bnep_tx_types[] = {
BNEP_GENERAL,
BNEP_COMPRESSED_SRC_ONLY,
BNEP_COMPRESSED_DST_ONLY,
BNEP_COMPRESSED
};
 
static inline int bnep_tx_frame(struct bnep_session *s, struct sk_buff *skb)
{
struct ethhdr *eh = (void *) skb->data;
struct socket *sock = s->sock;
struct iovec 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 iovec) { &type, 1 };
len++;
 
if (!memcmp(eh->h_dest, s->eh.h_source, ETH_ALEN))
type |= 0x01;
 
if (!memcmp(eh->h_source, s->eh.h_dest, ETH_ALEN))
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 iovec) { eh->h_source, ETH_ALEN };
len += ETH_ALEN;
break;
case BNEP_COMPRESSED_DST_ONLY:
iv[il++] = (struct iovec) { eh->h_dest, ETH_ALEN };
len += ETH_ALEN;
break;
}
 
send:
iv[il++] = (struct iovec) { skb->data, skb->len };
len += skb->len;
/* FIXME: linearize skb */
s->msg.msg_iov = iv;
s->msg.msg_iovlen = il;
len = sock->ops->sendmsg(sock, &s->msg, len, NULL);
kfree_skb(skb);
 
if (len > 0) {
s->stats.tx_bytes += len;
s->stats.tx_packets++;
return 0;
}
 
return len;
}
 
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("");
 
daemonize(); reparent_to_init();
 
sprintf(current->comm, "kbnepd %s", dev->name);
sigfillset(&current->blocked);
flush_signals(current);
 
current->nice = -15;
 
set_fs(KERNEL_DS);
 
init_waitqueue_entry(&wait, current);
add_wait_queue(sk->sleep, &wait);
while (!atomic_read(&s->killed)) {
set_current_state(TASK_INTERRUPTIBLE);
 
// RX
while ((skb = skb_dequeue(&sk->receive_queue))) {
skb_orphan(skb);
bnep_rx_frame(s, skb);
}
 
if (sk->state != BT_CONNECTED)
break;
// TX
while ((skb = skb_dequeue(&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, &wait);
 
/* Cleanup session */
down_write(&bnep_session_sem);
 
/* Delete network device */
unregister_netdev(dev);
 
/* Release the socket */
fput(s->sock->file);
 
__bnep_unlink_session(s);
 
up_write(&bnep_session_sem);
kfree(s);
return 0;
}
 
int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock)
{
struct net_device *dev;
struct bnep_session *s, *ss;
u8 dst[ETH_ALEN], src[ETH_ALEN];
int err;
 
BT_DBG("");
 
baswap((void *) dst, &bluez_pi(sock->sk)->dst);
baswap((void *) src, &bluez_pi(sock->sk)->src);
 
s = kmalloc(sizeof(struct bnep_session), GFP_KERNEL);
if (!s)
return -ENOMEM;
memset(s, 0, sizeof(struct bnep_session));
 
down_write(&bnep_session_sem);
 
ss = __bnep_get_session(dst);
if (ss && ss->state == BT_CONNECTED) {
err = -EEXIST;
goto failed;
}
 
dev = &s->dev;
if (*req->device)
strcpy(dev->name, req->device);
else
strcpy(dev->name, "bnep%d");
 
memset(dev->broadcast, 0xff, ETH_ALEN);
 
/* This is rx header therefor addresses are swaped.
* ie eh.h_dest is our local address. */
memcpy(s->eh.h_dest, &src, ETH_ALEN);
memcpy(s->eh.h_source, &dst, ETH_ALEN);
 
s->sock = sock;
s->role = req->role;
s->state = BT_CONNECTED;
s->msg.msg_flags = MSG_NOSIGNAL;
 
#ifdef CONFIG_BLUEZ_BNEP_MC_FILTER
/* Set default mc filter */
set_bit(bnep_mc_hash(dev->broadcast), &s->mc_filter);
#endif
#ifdef CONFIG_BLUEZ_BNEP_PROTO_FILTER
/* Set default protocol filter */
 
/* (IPv4, ARP) */
s->proto_filter[0].start = htons(0x0800);
s->proto_filter[0].end = htons(0x0806);
/* (RARP, AppleTalk) */
s->proto_filter[1].start = htons(0x8035);
s->proto_filter[1].end = htons(0x80F3);
/* (IPX, IPv6) */
s->proto_filter[2].start = htons(0x8137);
s->proto_filter[2].end = htons(0x86DD);
#endif
dev->init = bnep_net_init;
dev->priv = s;
err = register_netdev(dev);
if (err) {
goto failed;
}
 
__bnep_link_session(s);
err = kernel_thread(bnep_session, s, CLONE_FS | CLONE_FILES | CLONE_SIGHAND);
if (err < 0) {
/* Session thread start failed, gotta cleanup. */
unregister_netdev(dev);
__bnep_unlink_session(s);
goto failed;
}
 
up_write(&bnep_session_sem);
strcpy(req->device, dev->name);
return 0;
 
failed:
up_write(&bnep_session_sem);
kfree(s);
return err;
}
 
int bnep_del_connection(struct bnep_conndel_req *req)
{
struct bnep_session *s;
int err = 0;
 
BT_DBG("");
 
down_read(&bnep_session_sem);
 
s = __bnep_get_session(req->dst);
if (s) {
/* Wakeup user-space which is polling for socket errors.
* This is temporary hack untill we have shutdown in L2CAP */
s->sock->sk->err = EUNATCH;
/* Kill session thread */
atomic_inc(&s->killed);
wake_up_interruptible(s->sock->sk->sleep);
} else
err = -ENOENT;
 
up_read(&bnep_session_sem);
return err;
}
 
static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s)
{
memcpy(ci->dst, s->eh.h_source, ETH_ALEN);
strcpy(ci->device, s->dev.name);
ci->flags = s->flags;
ci->state = s->state;
ci->role = s->role;
}
 
int bnep_get_connlist(struct bnep_connlist_req *req)
{
struct list_head *p;
int err = 0, n = 0;
 
down_read(&bnep_session_sem);
 
list_for_each(p, &bnep_session_list) {
struct bnep_session *s;
struct bnep_conninfo ci;
 
s = list_entry(p, struct bnep_session, list);
 
__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;
}
 
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;
}
 
static int __init bnep_init_module(void)
{
l2cap_load();
 
bnep_sock_init();
 
BT_INFO("BlueZ BNEP ver %s", VERSION);
BT_INFO("Copyright (C) 2001,2002 Inventel Systemes");
BT_INFO("Written 2001,2002 by Clement Moreau <clement.moreau@inventel.fr>");
BT_INFO("Written 2001,2002 by David Libault <david.libault@inventel.fr>");
BT_INFO("Copyright (C) 2002 Maxim Krasnyanskiy <maxk@qualcomm.com>");
 
return 0;
}
 
static void __exit bnep_cleanup_module(void)
{
bnep_sock_cleanup();
}
 
module_init(bnep_init_module);
module_exit(bnep_cleanup_module);
 
MODULE_DESCRIPTION("BlueZ BNEP ver " VERSION);
MODULE_AUTHOR("David Libault <david.libault@inventel.fr>, Maxim Krasnyanskiy <maxk@qualcomm.com>");
MODULE_LICENSE("GPL");
/bnep.h
0,0 → 1,185
/*
BNEP protocol definition for Linux Bluetooth stack (BlueZ).
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.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
 
/*
* $Id: bnep.h,v 1.1.1.1 2004-04-15 01:17:07 phoenix Exp $
*/
 
#ifndef _BNEP_H
#define _BNEP_H
 
#include <linux/types.h>
#include <net/bluetooth/bluetooth.h>
 
#include <linux/crc32.h>
 
// Limits
#define BNEP_MAX_PROTO_FILTERS 5
#define BNEP_MAX_MULTICAST_FILTERS 20
 
// UUIDs
#define BNEP_BASE_UUID 0x0000000000001000800000805F9B34FB
#define BNEP_UUID16 0x02
#define BNEP_UUID32 0x04
#define BNEP_UUID128 0x16
 
#define BNEP_SVC_PANU 0x1115
#define BNEP_SVC_NAP 0x1116
#define BNEP_SVC_GN 0x1117
 
// Packet types
#define BNEP_GENERAL 0x00
#define BNEP_CONTROL 0x01
#define BNEP_COMPRESSED 0x02
#define BNEP_COMPRESSED_SRC_ONLY 0x03
#define BNEP_COMPRESSED_DST_ONLY 0x04
 
// Control types
#define BNEP_CMD_NOT_UNDERSTOOD 0x00
#define BNEP_SETUP_CONN_REQ 0x01
#define BNEP_SETUP_CONN_RSP 0x02
#define BNEP_FILTER_NET_TYPE_SET 0x03
#define BNEP_FILTER_NET_TYPE_RSP 0x04
#define BNEP_FILTER_MULTI_ADDR_SET 0x05
#define BNEP_FILTER_MULTI_ADDR_RSP 0x06
 
// Extension types
#define BNEP_EXT_CONTROL 0x00
 
// Response messages
#define BNEP_SUCCESS 0x00
 
#define BNEP_CONN_INVALID_DST 0x01
#define BNEP_CONN_INVALID_SRC 0x02
#define BNEP_CONN_INVALID_SVC 0x03
#define BNEP_CONN_NOT_ALLOWED 0x04
 
#define BNEP_FILTER_UNSUPPORTED_REQ 0x01
#define BNEP_FILTER_INVALID_RANGE 0x02
#define BNEP_FILTER_INVALID_MCADDR 0x02
#define BNEP_FILTER_LIMIT_REACHED 0x03
#define BNEP_FILTER_DENIED_SECURITY 0x04
 
// L2CAP settings
#define BNEP_MTU 1691
#define BNEP_PSM 0x0f
#define BNEP_FLUSH_TO 0xffff
#define BNEP_CONNECT_TO 15
#define BNEP_FILTER_TO 15
 
// Headers
#define BNEP_TYPE_MASK 0x7f
#define BNEP_EXT_HEADER 0x80
 
struct bnep_setup_conn_req {
__u8 type;
__u8 ctrl;
__u8 uuid_size;
__u8 service[0];
} __attribute__((packed));
 
struct bnep_set_filter_req {
__u8 type;
__u8 ctrl;
__u16 len;
__u8 list[0];
} __attribute__((packed));
 
struct bnep_control_rsp {
__u8 type;
__u8 ctrl;
__u16 resp;
} __attribute__((packed));
 
struct bnep_ext_hdr {
__u8 type;
__u8 len;
__u8 data[0];
} __attribute__((packed));
 
/* BNEP ioctl defines */
#define BNEPCONNADD _IOW('B', 200, int)
#define BNEPCONNDEL _IOW('B', 201, int)
#define BNEPGETCONNLIST _IOR('B', 210, int)
#define BNEPGETCONNINFO _IOR('B', 211, int)
 
struct bnep_connadd_req {
int sock; // Connected socket
__u32 flags;
__u16 role;
char device[16]; // Name of the Ethernet device
};
 
struct bnep_conndel_req {
__u32 flags;
__u8 dst[ETH_ALEN];
};
 
struct bnep_conninfo {
__u32 flags;
__u16 role;
__u16 state;
__u8 dst[ETH_ALEN];
char device[16];
};
 
struct bnep_connlist_req {
__u32 cnum;
struct bnep_conninfo *ci;
};
 
struct bnep_proto_filter {
__u16 start;
__u16 end;
};
 
int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
int bnep_del_connection(struct bnep_conndel_req *req);
int bnep_get_connlist(struct bnep_connlist_req *req);
int bnep_get_conninfo(struct bnep_conninfo *ci);
 
// BNEP sessions
struct bnep_session {
struct list_head list;
unsigned int role;
unsigned long state;
unsigned long flags;
atomic_t killed;
 
struct ethhdr eh;
struct msghdr msg;
 
struct bnep_proto_filter proto_filter[BNEP_MAX_PROTO_FILTERS];
u64 mc_filter;
struct socket *sock;
struct net_device dev;
struct net_device_stats stats;
};
 
int bnep_net_init(struct net_device *dev);
int bnep_sock_init(void);
int bnep_sock_cleanup(void);
 
static inline int bnep_mc_hash(__u8 *addr)
{
return (crc32_be(~0, addr, ETH_ALEN) >> 26);
}
 
#endif
/Config.in
0,0 → 1,11
#
# Bluetooth BNEP layer configuration
#
 
dep_tristate 'BNEP protocol support' CONFIG_BLUEZ_BNEP $CONFIG_BLUEZ_L2CAP
 
if [ "$CONFIG_BLUEZ_BNEP" != "n" ]; then
bool ' Multicast filter support' CONFIG_BLUEZ_BNEP_MC_FILTER
bool ' Protocol filter support' CONFIG_BLUEZ_BNEP_PROTO_FILTER
fi
 
/Makefile
0,0 → 1,10
#
# Makefile for the Linux Bluetooth BNEP layer
#
 
O_TARGET := bnep.o
 
obj-y := core.o sock.o netdev.o
obj-m += $(O_TARGET)
 
include $(TOPDIR)/Rules.make

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