#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/socket.h>
#include <fcntl.h>
#include <net/if.h>
#include <linux/if_tun.h>
#include <sys/ioctl.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
#include <sys/eventfd.h>
#include <net/if_arp.h>
#include <sched.h>
virtio_vring_free_tx (vm, vif, TX_QUEUE (i));
/* *INDENT-ON* */
- _IOCTL (vif->tap_fds[0], TUNSETPERSIST, (void *) (uintptr_t) 0);
- tap_log_dbg (vif, "TUNSETPERSIST: unset");
+ if (vif->tap_fds)
+ {
+ _IOCTL (vif->tap_fds[0], TUNSETPERSIST, (void *) (uintptr_t) 0);
+ tap_log_dbg (vif, "TUNSETPERSIST: unset");
+ }
error:
vec_foreach_index (i, vif->tap_fds) close (vif->tap_fds[i]);
{
host_if_name = (char *) args->host_if_name;
clib_memcpy (ifr.ifr_name, host_if_name,
- clib_min (IFNAMSIZ, strlen (host_if_name)));
+ clib_min (IFNAMSIZ, vec_len (host_if_name)));
}
else
{
if ((args->tap_flags & TAP_FLAG_GSO)
&& (args->tap_flags & TAP_FLAG_GRO_COALESCE))
{
- vif->packet_coalesce = 1;
virtio_set_packet_coalesce (vif);
}
vnet_hw_interface_set_input_node (vnm, vif->hw_if_index,
{
vnet_hw_interface_assign_rx_thread (vnm, vif->hw_if_index, i, ~0);
vnet_hw_interface_set_rx_mode (vnm, vif->hw_if_index, i,
- VNET_HW_INTERFACE_RX_MODE_DEFAULT);
+ VNET_HW_IF_RX_MODE_DEFAULT);
virtio_vring_set_numa_node (vm, vif, RX_QUEUE (i));
}
vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
vnet_hw_interface_set_flags (vnm, vif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
+ /*
+ * Host tun/tap driver link carrier state is "up" at creation. The
+ * driver never changes this unless the backend (VPP) changes it using
+ * TUNSETCARRIER ioctl(). See tap_set_carrier().
+ */
+ vif->host_carrier_up = 1;
vif->cxq_vring = NULL;
goto done;
}
if (is_packet_coalesce)
{
- vif->packet_coalesce = 1;
virtio_set_packet_coalesce (vif);
}
}
{
clib_memcpy(tapid->host_if_name, vif->host_if_name,
MIN (ARRAY_LEN (tapid->host_if_name) - 1,
- strlen ((const char *) vif->host_if_name)));
+ vec_len (vif->host_if_name)));
}
if (vif->net_ns)
{
clib_memcpy(tapid->host_namespace, vif->net_ns,
MIN (ARRAY_LEN (tapid->host_namespace) - 1,
- strlen ((const char *) vif->net_ns)));
+ vec_len (vif->net_ns)));
}
if (vif->host_bridge)
{
clib_memcpy(tapid->host_bridge, vif->host_bridge,
MIN (ARRAY_LEN (tapid->host_bridge) - 1,
- strlen ((const char *) vif->host_bridge)));
+ vec_len (vif->host_bridge)));
}
if (vif->host_ip4_prefix_len)
clib_memcpy(tapid->host_ip4_addr.as_u8, &vif->host_ip4_addr, 4);
return 0;
}
+/*
+ * Set host tap/tun interface carrier state so it will appear to host
+ * applications that the interface's link state changed.
+ *
+ * If the kernel we're building against does not have support for the
+ * TUNSETCARRIER ioctl command, do nothing.
+ */
+int
+tap_set_carrier (u32 hw_if_index, u32 carrier_up)
+{
+ int ret = 0;
+#ifdef TUNSETCARRIER
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+ virtio_main_t *mm = &virtio_main;
+ virtio_if_t *vif;
+ int *fd;
+
+ vif = pool_elt_at_index (mm->interfaces, hi->dev_instance);
+ vec_foreach (fd, vif->tap_fds)
+ {
+ ret = ioctl (*fd, TUNSETCARRIER, &carrier_up);
+ if (ret < 0)
+ {
+ clib_warning ("ioctl (TUNSETCARRIER) returned %d", ret);
+ break;
+ }
+ }
+ if (!ret)
+ vif->host_carrier_up = (carrier_up != 0);
+#endif
+
+ return ret;
+}
+
static clib_error_t *
tap_mtu_config (vlib_main_t * vm, unformat_input_t * input)
{
return 0;
}
+/*
+ * Set host tap/tun interface speed in Mbps.
+ */
+int
+tap_set_speed (u32 hw_if_index, u32 speed)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+ virtio_main_t *mm = &virtio_main;
+ virtio_if_t *vif;
+ int old_netns_fd = -1;
+ int nfd = -1;
+ int ctl_fd = -1;
+ struct ifreq ifr;
+ struct ethtool_cmd ecmd;
+ int ret = -1;
+
+ vif = pool_elt_at_index (mm->interfaces, hi->dev_instance);
+
+ if (vif->net_ns)
+ {
+ old_netns_fd = open ("/proc/self/ns/net", O_RDONLY);
+ if ((nfd = open_netns_fd ((char *) vif->net_ns)) == -1)
+ {
+ clib_warning ("Cannot open netns");
+ goto done;
+ }
+ if (setns (nfd, CLONE_NEWNET) == -1)
+ {
+ clib_warning ("Cannot set ns");
+ goto done;
+ }
+ }
+
+ if ((ctl_fd = socket (AF_INET, SOCK_STREAM, 0)) == -1)
+ {
+ clib_warning ("Cannot open control socket");
+ goto done;
+ }
+
+ ecmd.cmd = ETHTOOL_GSET;
+ clib_memset (&ifr, 0, sizeof (ifr));
+ clib_memcpy (ifr.ifr_name, vif->host_if_name,
+ strlen ((const char *) vif->host_if_name));
+ ifr.ifr_data = (void *) &ecmd;
+ if ((ret = ioctl (ctl_fd, SIOCETHTOOL, &ifr)) < 0)
+ {
+ clib_warning ("Cannot get device settings");
+ goto done;
+ }
+
+ if (ethtool_cmd_speed (&ecmd) != speed)
+ {
+ ecmd.cmd = ETHTOOL_SSET;
+ ethtool_cmd_speed_set (&ecmd, speed);
+ if ((ret = ioctl (ctl_fd, SIOCETHTOOL, &ifr)) < 0)
+ {
+ clib_warning ("Cannot set device settings");
+ goto done;
+ }
+ }
+
+done:
+ if (old_netns_fd != -1)
+ {
+ if (setns (old_netns_fd, CLONE_NEWNET) == -1)
+ {
+ clib_warning ("Cannot set old ns");
+ }
+ close (old_netns_fd);
+ }
+ if (nfd != -1)
+ close (nfd);
+ if (ctl_fd != -1)
+ close (ctl_fd);
+
+ return ret;
+}
+
/* tap { host-mtu <size> } configuration. */
VLIB_CONFIG_FUNCTION (tap_mtu_config, "tap");
Code Review / vpp.git / blobdiff