#include <linux/rtnetlink.h>
#include <vlib/vlib.h>
+#include <vlib/log.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip4_packet.h>
return fd;
}
+#define TAP_MAX_INSTANCE 1024
void
tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
{
vnet_main_t *vnm = vnet_get_main ();
+ vlib_thread_main_t *thm = vlib_get_thread_main ();
virtio_main_t *vim = &virtio_main;
tap_main_t *tm = &tap_main;
vnet_sw_interface_t *sw;
struct vhost_memory *vhost_mem = 0;
virtio_if_t *vif = 0;
clib_error_t *err = 0;
- uword *p;
if (args->id != ~0)
{
- p = hash_get (tm->dev_instance_by_interface_id, args->id);
- if (p)
+ if (clib_bitmap_get (tm->tap_ids, args->id))
{
args->rv = VNET_API_ERROR_INVALID_INTERFACE;
args->error = clib_error_return (0, "interface already exists");
}
else
{
- int tries = 1000;
- while (--tries)
- {
- args->id = tm->last_used_interface_id++;
- p = hash_get (tm->dev_instance_by_interface_id, args->id);
- if (!p)
- break;
- }
+ args->id = clib_bitmap_first_clear (tm->tap_ids);
+ }
- if (!tries)
- {
- args->rv = VNET_API_ERROR_UNSPECIFIED;
- args->error =
- clib_error_return (0, "cannot find free interface id");
- return;
- }
+ if (args->id > TAP_MAX_INSTANCE)
+ {
+ args->rv = VNET_API_ERROR_UNSPECIFIED;
+ args->error = clib_error_return (0, "cannot find free interface id");
+ return;
}
memset (&ifr, 0, sizeof (ifr));
vif->tap_fd = -1;
vif->id = args->id;
- hash_set (tm->dev_instance_by_interface_id, vif->id, vif->dev_instance);
-
if ((vif->fd = open ("/dev/vhost-net", O_RDWR | O_NONBLOCK)) < 0)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_1;
goto error;
}
+ tm->tap_ids = clib_bitmap_set (tm->tap_ids, vif->id, 1);
sw = vnet_get_hw_sw_interface (vnm, vif->hw_if_index);
vif->sw_if_index = sw->sw_if_index;
args->sw_if_index = vif->sw_if_index;
vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
vnet_hw_interface_set_flags (vnm, vif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
+ if (thm->n_vlib_mains > 1)
+ clib_spinlock_init (&vif->lockp);
goto done;
error:
if (vif->fd != -1)
close (vif->fd);
vec_foreach_index (i, vif->vrings) virtio_vring_free (vm, vif, i);
+ vec_free (vif->vrings);
memset (vif, 0, sizeof (virtio_if_t));
pool_put (vim->interfaces, vif);
/* bring down the interface */
vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
vnet_sw_interface_set_flags (vnm, vif->sw_if_index, 0);
+ vnet_hw_interface_unassign_rx_thread (vnm, vif->hw_if_index, 0);
ethernet_delete_interface (vnm, vif->hw_if_index);
vif->hw_if_index = ~0;
vec_foreach_index (i, vif->vrings) virtio_vring_free (vm, vif, i);
vec_free (vif->vrings);
- hash_unset (tm->dev_instance_by_interface_id, vif->id);
+ tm->tap_ids = clib_bitmap_set (tm->tap_ids, vif->id, 0);
+ clib_spinlock_free (&vif->lockp);
memset (vif, 0, sizeof (*vif));
pool_put (mm->interfaces, vif);
return 0;
}
+#define vlib_log_info(...) vlib_log(VLIB_LOG_LEVEL_INFO, __VA_ARGS__)
+
static clib_error_t *
tap_init (vlib_main_t * vm)
{
tap_main_t *tm = &tap_main;
- tm->dev_instance_by_interface_id = hash_create (0, sizeof (uword));
- return 0;
+ clib_error_t *error;
+ error = vlib_call_init_function (vm, vlib_log_init);
+ if (error)
+ return error;
+
+ tm->log_default = vlib_log_register_class ("tap", 0);
+ vlib_log_info (tm->log_default, "initialized");
+
+ return NULL;
}
VLIB_INIT_FUNCTION (tap_init);