Remove the core bluetooth code

It's been deprecated since QEMU v3.1. We've explicitly asked in the
deprecation message that people should speak up on qemu-devel in case
they are still actively using the bluetooth part of QEMU, but nobody
ever replied that they are really still using it.

I've tried it on my own to use this bluetooth subsystem for one of my
guests, but I was also not able to get it running anymore: When I was
trying to pass-through a real bluetooth device, either the guest did
not see the device at all, or the guest crashed.

Even worse for the emulated device: When running

 qemu-system-x86_64 -bt device:keyboard

QEMU crashes once you hit a key.

So it seems like the bluetooth stack is not only neglected, it is
completely bitrotten, as far as I can tell. The only attention that
this code got during the past years were some CVEs that have been
spotted there. So this code is a burden for the developers, without
any real benefit anymore. Time to remove it.

Note: hw/bt/Kconfig only gets cleared but not removed here yet.
Otherwise there is a problem with the *-softmmu/config-devices.mak.d
dependency files - they still contain a reference to this file which
gets evaluated first on some build hosts, before the file gets
properly recreated. To avoid breaking these builders, we still need
the file around for some time. It will get removed in a couple of
weeks instead.

Message-Id: <20191120091014.16883-4-thuth@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 0 insertions, 143 deletions

diff --git a/hw/bt/core.c b/hw/bt/core.c
deleted file mode 100644
index dfb196e2a4..0000000000
--- a/hw/bt/core.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Convenience functions for bluetooth.
- *
- * Copyright (C) 2008 Andrzej Zaborowski  <balrog@zabor.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 or
- * (at your option) version 3 of the License.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "qemu/error-report.h"
-#include "sysemu/bt.h"
-#include "hw/bt.h"
-
-/* Slave implementations can ignore this */
-static void bt_dummy_lmp_mode_change(struct bt_link_s *link)
-{
-}
-
-/* Slaves should never receive these PDUs */
-static void bt_dummy_lmp_connection_complete(struct bt_link_s *link)
-{
-    if (link->slave->reject_reason)
-        error_report("%s: stray LMP_not_accepted received, fixme", __func__);
-    else
-        error_report("%s: stray LMP_accepted received, fixme", __func__);
-    exit(-1);
-}
-
-static void bt_dummy_lmp_disconnect_master(struct bt_link_s *link)
-{
-    error_report("%s: stray LMP_detach received, fixme", __func__);
-    exit(-1);
-}
-
-static void bt_dummy_lmp_acl_resp(struct bt_link_s *link,
-                const uint8_t *data, int start, int len)
-{
-    error_report("%s: stray ACL response PDU, fixme", __func__);
-    exit(-1);
-}
-
-/* Slaves that don't hold any additional per link state can use these */
-static void bt_dummy_lmp_connection_request(struct bt_link_s *req)
-{
-    struct bt_link_s *link = g_malloc0(sizeof(struct bt_link_s));
-
-    link->slave = req->slave;
-    link->host = req->host;
-
-    req->host->reject_reason = 0;
-    req->host->lmp_connection_complete(link);
-}
-
-static void bt_dummy_lmp_disconnect_slave(struct bt_link_s *link)
-{
-    g_free(link);
-}
-
-static void bt_dummy_destroy(struct bt_device_s *device)
-{
-    bt_device_done(device);
-    g_free(device);
-}
-
-static int bt_dev_idx = 0;
-
-void bt_device_init(struct bt_device_s *dev, struct bt_scatternet_s *net)
-{
-    memset(dev, 0, sizeof(*dev));
-    dev->inquiry_scan = 1;
-    dev->page_scan = 1;
-
-    dev->bd_addr.b[0] = bt_dev_idx & 0xff;
-    dev->bd_addr.b[1] = bt_dev_idx >> 8;
-    dev->bd_addr.b[2] = 0xd0;
-    dev->bd_addr.b[3] = 0xba;
-    dev->bd_addr.b[4] = 0xbe;
-    dev->bd_addr.b[5] = 0xba;
-    bt_dev_idx ++;
-
-    /* Simple slave-only devices need to implement only .lmp_acl_data */
-    dev->lmp_connection_complete = bt_dummy_lmp_connection_complete;
-    dev->lmp_disconnect_master = bt_dummy_lmp_disconnect_master;
-    dev->lmp_acl_resp = bt_dummy_lmp_acl_resp;
-    dev->lmp_mode_change = bt_dummy_lmp_mode_change;
-    dev->lmp_connection_request = bt_dummy_lmp_connection_request;
-    dev->lmp_disconnect_slave = bt_dummy_lmp_disconnect_slave;
-
-    dev->handle_destroy = bt_dummy_destroy;
-
-    dev->net = net;
-    dev->next = net->slave;
-    net->slave = dev;
-}
-
-void bt_device_done(struct bt_device_s *dev)
-{
-    struct bt_device_s **p = &dev->net->slave;
-
-    while (*p && *p != dev)
-        p = &(*p)->next;
-    if (*p != dev) {
-        error_report("%s: bad bt device \"%s\"", __func__,
-                     dev->lmp_name ?: "(null)");
-        exit(-1);
-    }
-
-    *p = dev->next;
-}
-
-static struct bt_vlan_s {
-    struct bt_scatternet_s net;
-    int id;
-    struct bt_vlan_s *next;
-} *first_bt_vlan;
-
-/* find or alloc a new bluetooth "VLAN" */
-struct bt_scatternet_s *qemu_find_bt_vlan(int id)
-{
-    struct bt_vlan_s **pvlan, *vlan;
-    for (vlan = first_bt_vlan; vlan != NULL; vlan = vlan->next) {
-        if (vlan->id == id)
-            return &vlan->net;
-    }
-    vlan = g_malloc0(sizeof(struct bt_vlan_s));
-    vlan->id = id;
-    pvlan = &first_bt_vlan;
-    while (*pvlan != NULL)
-        pvlan = &(*pvlan)->next;
-    *pvlan = vlan;
-    return &vlan->net;
-}