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Current Path: /usr/src/contrib/libpcap

📁 ..
📄 CHANGES(41.04 KB)
📄 CMakeLists.txt(84.97 KB)
📄 CONTRIBUTING.md(1.41 KB)
📄 CREDITS(11.47 KB)
📁 ChmodBPF
📄 INSTALL.md(15.44 KB)
📄 LICENSE(868 B)
📄 Makefile-devel-adds(614 B)
📄 Makefile.in(23.68 KB)
📄 README.md(3.71 KB)
📄 TODO(1.51 KB)
📄 VERSION(6 B)
📁 Win32
📄 aclocal.m4(30.92 KB)
📄 arcnet.h(2.39 KB)
📄 atmuni31.h(3.87 KB)
📄 bpf_dump.c(1.9 KB)
📄 bpf_filter.c(12.22 KB)
📄 bpf_image.c(7.38 KB)
📄 chmod_bpf(757 B)
📁 cmake
📄 cmake_uninstall.cmake.in(1.01 KB)
📄 cmakeconfig.h.in(11.15 KB)
📄 config.guess(43.17 KB)
📄 config.h.in(10.25 KB)
📄 config.sub(34.93 KB)
📄 configure(331.21 KB)
📄 configure.ac(64.36 KB)
📄 diag-control.h(8.3 KB)
📄 dlpisubs.c(9.41 KB)
📄 dlpisubs.h(702 B)
📁 doc
📄 etherent.c(3.43 KB)
📄 ethertype.h(3.47 KB)
📄 extract.h(9.23 KB)
📄 fad-getad.c(8.62 KB)
📄 fad-gifc.c(12.84 KB)
📄 fad-glifc.c(9.37 KB)
📄 fmtutils.c(6.35 KB)
📄 fmtutils.h(2.19 KB)
📄 ftmacros.h(4.22 KB)
📄 gencode.c(257 KB)
📄 gencode.h(11.44 KB)
📄 grammar.y(24.66 KB)
📄 ieee80211.h(5.25 KB)
📄 install-sh(5.45 KB)
📁 lbl
📄 libpcap.pc.in(484 B)
📄 llc.h(2.56 KB)
📁 missing
📄 mkdep(2.43 KB)
📁 msdos
📄 nametoaddr.c(18.83 KB)
📄 nametoaddr.h(2.12 KB)
📄 nlpid.h(1.66 KB)
📄 nomkdep(135 B)
📄 optimize.c(62.27 KB)
📄 optimize.h(1.29 KB)
📄 org.tcpdump.chmod_bpf.plist(441 B)
📁 pcap
📄 pcap-bpf.c(84.02 KB)
📄 pcap-bpf.h(2.24 KB)
📄 pcap-bt-linux.c(11.42 KB)
📄 pcap-bt-linux.h(1.76 KB)
📄 pcap-bt-monitor-linux.c(7.84 KB)
📄 pcap-bt-monitor-linux.h(1.64 KB)
📄 pcap-common.c(47.14 KB)
📄 pcap-common.h(2.29 KB)
📄 pcap-config.1(2.27 KB)
📄 pcap-config.in(1.8 KB)
📄 pcap-dag.c(37.15 KB)
📄 pcap-dag.h(457 B)
📄 pcap-dbus.c(10.03 KB)
📄 pcap-dbus.h(112 B)
📄 pcap-dll.rc(1.03 KB)
📄 pcap-dlpi.c(47.56 KB)
📄 pcap-dos.c(35.9 KB)
📄 pcap-dos.h(6.7 KB)
📄 pcap-enet.c(4.74 KB)
📄 pcap-filter.manmisc.in(33.54 KB)
📄 pcap-int.h(16.94 KB)
📄 pcap-libdlpi.c(12.11 KB)
📄 pcap-linktype.manmisc.in(2.33 KB)
📄 pcap-linux.c(207.89 KB)
📄 pcap-namedb.h(1.98 KB)
📄 pcap-netfilter-linux.c(20.48 KB)
📄 pcap-netfilter-linux.h(1.67 KB)
📄 pcap-netmap.c(7.82 KB)
📄 pcap-netmap.h(126 B)
📄 pcap-new.c(12.79 KB)
📄 pcap-nit.c(10.2 KB)
📄 pcap-npf.c(51.61 KB)
📄 pcap-null.c(1.9 KB)
📄 pcap-pf.c(18.48 KB)
📄 pcap-rdmasniff.c(10.98 KB)
📄 pcap-rdmasniff.h(140 B)
📄 pcap-rpcap-int.h(3.43 KB)
📄 pcap-rpcap.c(96.91 KB)
📄 pcap-rpcap.h(2.19 KB)
📄 pcap-savefile.manfile.in(5.11 KB)
📄 pcap-septel.c(8.69 KB)
📄 pcap-septel.h(512 B)
📄 pcap-sita.c(36.34 KB)
📄 pcap-sita.h(224 B)
📄 pcap-sita.html(37.43 KB)
📄 pcap-snf.c(14.75 KB)
📄 pcap-snf.h(110 B)
📄 pcap-snit.c(12.67 KB)
📄 pcap-snoop.c(13.26 KB)
📄 pcap-tc.c(34.21 KB)
📄 pcap-tc.h(1.9 KB)
📄 pcap-tstamp.manmisc.in(7.7 KB)
📄 pcap-types.h(1.93 KB)
📄 pcap-usb-linux.c(35.89 KB)
📄 pcap-usb-linux.h(1.75 KB)
📄 pcap.3pcap.in(29.62 KB)
📄 pcap.c(103.69 KB)
📄 pcap.h(2.17 KB)
📄 pcap_activate.3pcap(3.8 KB)
📄 pcap_breakloop.3pcap(3.98 KB)
📄 pcap_can_set_rfmon.3pcap(2.63 KB)
📄 pcap_close.3pcap(1.47 KB)
📄 pcap_compile.3pcap.in(3.02 KB)
📄 pcap_create.3pcap(2.19 KB)
📄 pcap_datalink.3pcap.in(2.39 KB)
📄 pcap_datalink_name_to_val.3pcap(1.82 KB)
📄 pcap_datalink_val_to_name.3pcap(2.47 KB)
📄 pcap_dump.3pcap(1.73 KB)
📄 pcap_dump_close.3pcap(1.49 KB)
📄 pcap_dump_file.3pcap(1.54 KB)
📄 pcap_dump_flush.3pcap(1.69 KB)
📄 pcap_dump_ftell.3pcap(2.11 KB)
📄 pcap_dump_open.3pcap.in(3.31 KB)
📄 pcap_file.3pcap(2.06 KB)
📄 pcap_fileno.3pcap(2 KB)
📄 pcap_findalldevs.3pcap(6.25 KB)
📄 pcap_freecode.3pcap(1.67 KB)
📄 pcap_get_required_select_timeout.3pcap(3.04 KB)
📄 pcap_get_selectable_fd.3pcap(4.66 KB)
📄 pcap_get_tstamp_precision.3pcap.in(1.83 KB)
📄 pcap_geterr.3pcap(1.84 KB)
📄 pcap_inject.3pcap(3.34 KB)
📄 pcap_is_swapped.3pcap(1.91 KB)
📄 pcap_lib_version.3pcap(1.6 KB)
📄 pcap_list_datalinks.3pcap.in(2.54 KB)
📄 pcap_list_tstamp_types.3pcap.in(2.98 KB)
📄 pcap_lookupdev.3pcap(2.47 KB)
📄 pcap_lookupnet.3pcap(1.95 KB)
📄 pcap_loop.3pcap(6.58 KB)
📄 pcap_major_version.3pcap(1.96 KB)
📄 pcap_next_ex.3pcap(4.86 KB)
📄 pcap_offline_filter.3pcap(1.95 KB)
📄 pcap_open_dead.3pcap.in(2.65 KB)
📄 pcap_open_live.3pcap(2.65 KB)
📄 pcap_open_offline.3pcap.in(3.8 KB)
📄 pcap_set_buffer_size.3pcap(1.79 KB)
📄 pcap_set_datalink.3pcap(1.84 KB)
📄 pcap_set_immediate_mode.3pcap.in(3.27 KB)
📄 pcap_set_promisc.3pcap(1.82 KB)
📄 pcap_set_protocol_linux.3pcap(2.81 KB)
📄 pcap_set_rfmon.3pcap(1.82 KB)
📄 pcap_set_snaplen.3pcap(1.74 KB)
📄 pcap_set_timeout.3pcap(2.15 KB)
📄 pcap_set_tstamp_precision.3pcap.in(2.38 KB)
📄 pcap_set_tstamp_type.3pcap.in(2.73 KB)
📄 pcap_setdirection.3pcap(2.36 KB)
📄 pcap_setfilter.3pcap(1.79 KB)
📄 pcap_setnonblock.3pcap(2.82 KB)
📄 pcap_snapshot.3pcap(1.91 KB)
📄 pcap_stats.3pcap(3.35 KB)
📄 pcap_statustostr.3pcap(1.55 KB)
📄 pcap_strerror.3pcap(1.54 KB)
📄 pcap_tstamp_type_name_to_val.3pcap(1.87 KB)
📄 pcap_tstamp_type_val_to_name.3pcap(1.99 KB)
📄 portability.h(5.46 KB)
📄 ppp.h(2.62 KB)
📄 rpcap-protocol.c(6.67 KB)
📄 rpcap-protocol.h(18.61 KB)
📁 rpcapd
📄 savefile.c(13.72 KB)
📄 scanner.l(14.36 KB)
📄 sf-pcap.c(30.33 KB)
📄 sf-pcap.h(1.69 KB)
📄 sf-pcapng.c(38.9 KB)
📄 sf-pcapng.h(1.41 KB)
📄 sockutils.c(52.26 KB)
📄 sockutils.h(5.22 KB)
📄 sunatmpos.h(2.09 KB)
📁 testprogs
📁 tests
📄 varattrs.h(2.38 KB)

Editing: pcap-bt-linux.c

/*
 * Copyright (c) 2006 Paolo Abeni (Italy)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Bluetooth sniffing API implementation for Linux platform
 * By Paolo Abeni <paolo.abeni@email.it>
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "pcap-int.h"
#include "pcap-bt-linux.h"
#include "pcap/bluetooth.h"

#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <arpa/inet.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>

#define BT_IFACE "bluetooth"
#define BT_CTRL_SIZE 128

/* forward declaration */
static int bt_activate(pcap_t *);
static int bt_read_linux(pcap_t *, int , pcap_handler , u_char *);
static int bt_inject_linux(pcap_t *, const void *, size_t);
static int bt_setdirection_linux(pcap_t *, pcap_direction_t);
static int bt_stats_linux(pcap_t *, struct pcap_stat *);

/*
 * Private data for capturing on Linux Bluetooth devices.
 */
struct pcap_bt {
	int dev_id;		/* device ID of device we're bound to */
};

int
bt_findalldevs(pcap_if_list_t *devlistp, char *err_str)
{
	struct hci_dev_list_req *dev_list;
	struct hci_dev_req *dev_req;
	int sock;
	unsigned i;
	int ret = 0;

sock  = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
	if (sock < 0)
	{
		/* if bluetooth is not supported this is not fatal*/
		if (errno == EAFNOSUPPORT)
			return 0;
		pcap_fmt_errmsg_for_errno(err_str, PCAP_ERRBUF_SIZE,
		    errno, "Can't open raw Bluetooth socket");
		return -1;
	}

dev_list = malloc(HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list));
	if (!dev_list)
	{
		pcap_snprintf(err_str, PCAP_ERRBUF_SIZE, "Can't allocate %zu bytes for Bluetooth device list",
			HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list));
		ret = -1;
		goto done;
	}

dev_list->dev_num = HCI_MAX_DEV;

if (ioctl(sock, HCIGETDEVLIST, (void *) dev_list) < 0)
	{
		pcap_fmt_errmsg_for_errno(err_str, PCAP_ERRBUF_SIZE,
		    errno, "Can't get Bluetooth device list via ioctl");
		ret = -1;
		goto free;
	}

dev_req = dev_list->dev_req;
	for (i = 0; i < dev_list->dev_num; i++, dev_req++) {
		char dev_name[20], dev_descr[40];

pcap_snprintf(dev_name, sizeof(dev_name), BT_IFACE"%u", dev_req->dev_id);
		pcap_snprintf(dev_descr, sizeof(dev_descr), "Bluetooth adapter number %u", i);

/*
		 * Bluetooth is a wireless technology.
		 * XXX - if there's the notion of associating with a
		 * network, and we can determine whether the interface
		 * is associated with a network, check that and set
		 * the status to PCAP_IF_CONNECTION_STATUS_CONNECTED
		 * or PCAP_IF_CONNECTION_STATUS_DISCONNECTED.
		 */
		if (add_dev(devlistp, dev_name, PCAP_IF_WIRELESS, dev_descr, err_str)  == NULL)
		{
			ret = -1;
			break;
		}
	}

free:
	free(dev_list);

done:
	close(sock);
	return ret;
}

pcap_t *
bt_create(const char *device, char *ebuf, int *is_ours)
{
	const char *cp;
	char *cpend;
	long devnum;
	pcap_t *p;

/* Does this look like a Bluetooth device? */
	cp = strrchr(device, '/');
	if (cp == NULL)
		cp = device;
	/* Does it begin with BT_IFACE? */
	if (strncmp(cp, BT_IFACE, sizeof BT_IFACE - 1) != 0) {
		/* Nope, doesn't begin with BT_IFACE */
		*is_ours = 0;
		return NULL;
	}
	/* Yes - is BT_IFACE followed by a number? */
	cp += sizeof BT_IFACE - 1;
	devnum = strtol(cp, &cpend, 10);
	if (cpend == cp || *cpend != '\0') {
		/* Not followed by a number. */
		*is_ours = 0;
		return NULL;
	}
	if (devnum < 0) {
		/* Followed by a non-valid number. */
		*is_ours = 0;
		return NULL;
	}

/* OK, it's probably ours. */
	*is_ours = 1;

p = pcap_create_common(ebuf, sizeof (struct pcap_bt));
	if (p == NULL)
		return (NULL);

p->activate_op = bt_activate;
	return (p);
}

static int
bt_activate(pcap_t* handle)
{
	struct pcap_bt *handlep = handle->priv;
	struct sockaddr_hci addr;
	int opt;
	int		dev_id;
	struct hci_filter	flt;
	int err = PCAP_ERROR;

/* get bt interface id */
	if (sscanf(handle->opt.device, BT_IFACE"%d", &dev_id) != 1)
	{
		pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
			"Can't get Bluetooth device index from %s",
			 handle->opt.device);
		return PCAP_ERROR;
	}

/*
	 * Turn a negative snapshot value (invalid), a snapshot value of
	 * 0 (unspecified), or a value bigger than the normal maximum
	 * value, into the maximum allowed value.
	 *
	 * If some application really *needs* a bigger snapshot
	 * length, we should just increase MAXIMUM_SNAPLEN.
	 */
	if (handle->snapshot <= 0 || handle->snapshot > MAXIMUM_SNAPLEN)
		handle->snapshot = MAXIMUM_SNAPLEN;

/* Initialize some components of the pcap structure. */
	handle->bufsize = BT_CTRL_SIZE+sizeof(pcap_bluetooth_h4_header)+handle->snapshot;
	handle->linktype = DLT_BLUETOOTH_HCI_H4_WITH_PHDR;

handle->read_op = bt_read_linux;
	handle->inject_op = bt_inject_linux;
	handle->setfilter_op = install_bpf_program; /* no kernel filtering */
	handle->setdirection_op = bt_setdirection_linux;
	handle->set_datalink_op = NULL;	/* can't change data link type */
	handle->getnonblock_op = pcap_getnonblock_fd;
	handle->setnonblock_op = pcap_setnonblock_fd;
	handle->stats_op = bt_stats_linux;
	handlep->dev_id = dev_id;

/* Create HCI socket */
	handle->fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
	if (handle->fd < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't create raw socket");
		return PCAP_ERROR;
	}

handle->buffer = malloc(handle->bufsize);
	if (!handle->buffer) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't allocate dump buffer");
		goto close_fail;
	}

opt = 1;
	if (setsockopt(handle->fd, SOL_HCI, HCI_DATA_DIR, &opt, sizeof(opt)) < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't enable data direction info");
		goto close_fail;
	}

opt = 1;
	if (setsockopt(handle->fd, SOL_HCI, HCI_TIME_STAMP, &opt, sizeof(opt)) < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't enable time stamp");
		goto close_fail;
	}

/* Setup filter, do not call hci function to avoid dependence on
	 * external libs	*/
	memset(&flt, 0, sizeof(flt));
	memset((void *) &flt.type_mask, 0xff, sizeof(flt.type_mask));
	memset((void *) &flt.event_mask, 0xff, sizeof(flt.event_mask));
	if (setsockopt(handle->fd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't set filter");
		goto close_fail;
	}

/* Bind socket to the HCI device */
	addr.hci_family = AF_BLUETOOTH;
	addr.hci_dev = handlep->dev_id;
#ifdef HAVE_STRUCT_SOCKADDR_HCI_HCI_CHANNEL
	addr.hci_channel = HCI_CHANNEL_RAW;
#endif
	if (bind(handle->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't attach to device %d", handlep->dev_id);
		goto close_fail;
	}

if (handle->opt.rfmon) {
		/*
		 * Monitor mode doesn't apply to Bluetooth devices.
		 */
		err = PCAP_ERROR_RFMON_NOTSUP;
		goto close_fail;
	}

if (handle->opt.buffer_size != 0) {
		/*
		 * Set the socket buffer size to the specified value.
		 */
		if (setsockopt(handle->fd, SOL_SOCKET, SO_RCVBUF,
		    &handle->opt.buffer_size,
		    sizeof(handle->opt.buffer_size)) == -1) {
			pcap_fmt_errmsg_for_errno(handle->errbuf,
			    errno, PCAP_ERRBUF_SIZE, "SO_RCVBUF");
			goto close_fail;
		}
	}

handle->selectable_fd = handle->fd;
	return 0;

close_fail:
	pcap_cleanup_live_common(handle);
	return err;
}

static int
bt_read_linux(pcap_t *handle, int max_packets _U_, pcap_handler callback, u_char *user)
{
	struct cmsghdr *cmsg;
	struct msghdr msg;
	struct iovec  iv;
	ssize_t ret;
	struct pcap_pkthdr pkth;
	pcap_bluetooth_h4_header* bthdr;
	u_char *pktd;
	int in = 0;

pktd = (u_char *)handle->buffer + BT_CTRL_SIZE;
	bthdr = (pcap_bluetooth_h4_header*)(void *)pktd;
	iv.iov_base = pktd + sizeof(pcap_bluetooth_h4_header);
	iv.iov_len  = handle->snapshot;

memset(&msg, 0, sizeof(msg));
	msg.msg_iov = &iv;
	msg.msg_iovlen = 1;
	msg.msg_control = handle->buffer;
	msg.msg_controllen = BT_CTRL_SIZE;

/* ignore interrupt system call error */
	do {
		ret = recvmsg(handle->fd, &msg, 0);
		if (handle->break_loop)
		{
			handle->break_loop = 0;
			return -2;
		}
	} while ((ret == -1) && (errno == EINTR));

if (ret < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't receive packet");
		return -1;
	}

pkth.caplen = ret;

/* get direction and timestamp*/
	cmsg = CMSG_FIRSTHDR(&msg);
	while (cmsg) {
		switch (cmsg->cmsg_type) {
			case HCI_CMSG_DIR:
				memcpy(&in, CMSG_DATA(cmsg), sizeof in);
				break;
                      	case HCI_CMSG_TSTAMP:
                      		memcpy(&pkth.ts, CMSG_DATA(cmsg),
                      		    sizeof pkth.ts);
				break;
		}
		cmsg = CMSG_NXTHDR(&msg, cmsg);
	}
	if ((in && (handle->direction == PCAP_D_OUT)) ||
				((!in) && (handle->direction == PCAP_D_IN)))
		return 0;

bthdr->direction = htonl(in != 0);
	pkth.caplen+=sizeof(pcap_bluetooth_h4_header);
	pkth.len = pkth.caplen;
	if (handle->fcode.bf_insns == NULL ||
	    bpf_filter(handle->fcode.bf_insns, pktd, pkth.len, pkth.caplen)) {
		callback(user, &pkth, pktd);
		return 1;
	}
	return 0;	/* didn't pass filter */
}

static int
bt_inject_linux(pcap_t *handle, const void *buf _U_, size_t size _U_)
{
	pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
	    "Packet injection is not supported on Bluetooth devices");
	return (-1);
}

static int
bt_stats_linux(pcap_t *handle, struct pcap_stat *stats)
{
	struct pcap_bt *handlep = handle->priv;
	int ret;
	struct hci_dev_info dev_info;
	struct hci_dev_stats * s = &dev_info.stat;
	dev_info.dev_id = handlep->dev_id;

/* ignore eintr */
	do {
		ret = ioctl(handle->fd, HCIGETDEVINFO, (void *)&dev_info);
	} while ((ret == -1) && (errno == EINTR));

if (ret < 0) {
		pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "Can't get stats via ioctl");
		return (-1);

}

/* we receive both rx and tx frames, so comulate all stats */
	stats->ps_recv = s->evt_rx + s->acl_rx + s->sco_rx + s->cmd_tx +
		s->acl_tx +s->sco_tx;
	stats->ps_drop = s->err_rx + s->err_tx;
	stats->ps_ifdrop = 0;
	return 0;
}

static int
bt_setdirection_linux(pcap_t *p, pcap_direction_t d)
{
	p->direction = d;
	return 0;
}

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