#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/virtio_net.h>
-#include <linux/vhost.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
#include <sys/eventfd.h>
#include <net/if_arp.h>
-#include <sched.h>
#include <limits.h>
#include <linux/netlink.h>
#include <vlib/vlib.h>
#include <vlib/physmem.h>
#include <vlib/unix/unix.h>
+#include <vppinfra/linux/netns.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
};
/* *INDENT-ON* */
+#define TUN_MAX_PACKET_BYTES 65355
+#define TUN_MIN_PACKET_BYTES 64
+#define TUN_DEFAULT_PACKET_BYTES 1500
+
static u32
virtio_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi,
u32 flags)
return 0;
}
-static int
-open_netns_fd (char *netns)
-{
- u8 *s = 0;
- int fd;
-
- if (strncmp (netns, "pid:", 4) == 0)
- s = format (0, "/proc/%u/ns/net%c", atoi (netns + 4), 0);
- else if (netns[0] == '/')
- s = format (0, "%s%c", netns, 0);
- else
- s = format (0, "/var/run/netns/%s%c", netns, 0);
-
- fd = open ((char *) s, O_RDONLY);
- vec_free (s);
- return fd;
-}
-
#define TAP_MAX_INSTANCE 1024
static void
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]);
tap_main_t *tm = &tap_main;
vnet_sw_interface_t *sw;
vnet_hw_interface_t *hw;
- int i, j, num_vhost_queues;
+ int i, num_vhost_queues;
int old_netns_fd = -1;
struct ifreq ifr = {.ifr_flags = IFF_NO_PI | IFF_VNET_HDR };
struct ifreq get_ifr = {.ifr_flags = 0 };
size_t hdrsz;
- struct vhost_memory *vhost_mem = 0;
+ vhost_memory_t *vhost_mem = 0;
virtio_if_t *vif = 0;
clib_error_t *err = 0;
unsigned int tap_features;
int tfd = -1, qfd = -1, vfd = -1, nfd = -1;
char *host_if_name = 0;
unsigned int offload = 0;
+ int sndbuf = 0;
if (args->id != ~0)
{
{
vif->type = VIRTIO_IF_TYPE_TUN;
ifr.ifr_flags |= IFF_TUN;
- args->tap_flags &= ~(TAP_FLAG_GSO | TAP_FLAG_CSUM_OFFLOAD);
+
+ /*
+ * From kernel 4.20, xdp support has been added in tun_sendmsg.
+ * If sndbuf == INT_MAX, vhost batches the packet and processes
+ * them using xdp data path for tun driver. It assumes packets
+ * are ethernet frames (It needs to be fixed).
+ * To avoid xdp data path in tun driver, sndbuf value should
+ * be < INT_MAX.
+ */
+ sndbuf = INT_MAX - 1;
}
else
{
vif->type = VIRTIO_IF_TYPE_TAP;
ifr.ifr_flags |= IFF_TAP;
+ sndbuf = INT_MAX;
}
vif->dev_instance = vif - vim->interfaces;
{
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->host_namespace)
{
- old_netns_fd = open ("/proc/self/ns/net", O_RDONLY);
- if ((nfd = open_netns_fd ((char *) args->host_namespace)) == -1)
+ old_netns_fd = clib_netns_open (NULL /* self */);
+ if ((nfd = clib_netns_open (args->host_namespace)) == -1)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
- args->error = clib_error_return_unix (0, "open_netns_fd '%s'",
+ args->error = clib_error_return_unix (0, "clib_netns_open '%s'",
args->host_namespace);
goto error;
}
- if (setns (nfd, CLONE_NEWNET) == -1)
+ if (clib_setns (nfd) == -1)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
args->error = clib_error_return_unix (0, "setns '%s'",
else
ifr.ifr_flags |= IFF_MULTI_QUEUE;
- hdrsz = sizeof (struct virtio_net_hdr_v1);
+ hdrsz = sizeof (virtio_net_hdr_v1_t);
if (args->tap_flags & TAP_FLAG_GSO)
{
offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6;
vif->tap_fds[i], hdrsz);
_IOCTL (vif->tap_fds[i], TUNSETVNETHDRSZ, &hdrsz);
- j = INT_MAX;
- tap_log_dbg (vif, "TUNSETSNDBUF: fd %d sndbuf %d", vif->tap_fds[i], j);
- _IOCTL (vif->tap_fds[i], TUNSETSNDBUF, &j);
+ tap_log_dbg (vif, "TUNSETSNDBUF: fd %d sndbuf %d", vif->tap_fds[i],
+ sndbuf);
+ _IOCTL (vif->tap_fds[i], TUNSETSNDBUF, &sndbuf);
tap_log_dbg (vif, "TUNSETOFFLOAD: fd %d offload 0x%lx", vif->tap_fds[i],
offload);
after we change our net namespace */
if (args->host_namespace)
{
- old_netns_fd = open ("/proc/self/ns/net", O_RDONLY);
- if ((nfd = open_netns_fd ((char *) args->host_namespace)) == -1)
+ old_netns_fd = clib_netns_open (NULL /* self */);
+ if ((nfd = clib_netns_open (args->host_namespace)) == -1)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
- args->error = clib_error_return_unix (0, "open_netns_fd '%s'",
+ args->error = clib_error_return_unix (0, "clib_netns_open '%s'",
args->host_namespace);
goto error;
}
args->rv = VNET_API_ERROR_NETLINK_ERROR;
goto error;
}
- if (setns (nfd, CLONE_NEWNET) == -1)
+ if (clib_setns (nfd) == -1)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
args->error = clib_error_return_unix (0, "setns '%s'",
args->rv = VNET_API_ERROR_NETLINK_ERROR;
goto error;
}
- }
- if (args->host_bridge)
- {
- args->error = vnet_netlink_set_link_master (vif->ifindex,
- (char *) args->host_bridge);
- if (args->error)
+ if (args->host_bridge)
{
- args->rv = VNET_API_ERROR_NETLINK_ERROR;
- goto error;
+ args->error = vnet_netlink_set_link_master (vif->ifindex,
+ (char *)
+ args->host_bridge);
+ if (args->error)
+ {
+ args->rv = VNET_API_ERROR_NETLINK_ERROR;
+ goto error;
+ }
}
}
/* switch back to old net namespace */
if (args->host_namespace)
{
- if (setns (old_netns_fd, CLONE_NEWNET) == -1)
+ if (clib_setns (old_netns_fd) == -1)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
args->error = clib_error_return_unix (0, "setns '%s'",
}
/* setup features and memtable */
- i = sizeof (struct vhost_memory) + sizeof (struct vhost_memory_region);
+ i = sizeof (vhost_memory_t) + sizeof (vhost_memory_region_t);
vhost_mem = clib_mem_alloc (i);
clib_memset (vhost_mem, 0, i);
vhost_mem->nregions = 1;
/* finish initializing queue pair */
for (i = 0; i < num_vhost_queues * 2; i++)
{
- struct vhost_vring_addr addr = { 0 };
- struct vhost_vring_state state = { 0 };
- struct vhost_vring_file file = { 0 };
+ vhost_vring_addr_t addr = { 0 };
+ vhost_vring_state_t state = { 0 };
+ vhost_vring_file_t file = { 0 };
virtio_vring_t *vring;
u16 qp = i >> 1;
int fd = vif->vhost_fds[qp];
ethernet_mac_address_generate (args->mac_addr.bytes);
clib_memcpy (vif->mac_addr, args->mac_addr.bytes, 6);
+ vif->host_bridge = format (0, "%s%c", args->host_bridge, 0);
}
vif->host_if_name = format (0, "%s%c", host_if_name, 0);
vif->net_ns = format (0, "%s%c", args->host_namespace, 0);
- vif->host_bridge = format (0, "%s%c", args->host_bridge, 0);
vif->host_mtu_size = args->host_mtu_size;
+ vif->tap_flags = args->tap_flags;
clib_memcpy (vif->host_mac_addr, args->host_mac_addr.bytes, 6);
vif->host_ip4_prefix_len = args->host_ip4_prefix_len;
vif->host_ip6_prefix_len = args->host_ip6_prefix_len;
args->sw_if_index = vif->sw_if_index;
args->rv = 0;
hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+ hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_INT_MODE;
if (args->tap_flags & TAP_FLAG_GSO)
{
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
- VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+ hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+ VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+ VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
}
else if (args->tap_flags & TAP_FLAG_CSUM_OFFLOAD)
{
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+ hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+ VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
}
- vnet_hw_interface_set_input_node (vnm, vif->hw_if_index,
- virtio_input_node.index);
-
- for (i = 0; i < vif->num_rxqs; i++)
+ if ((args->tap_flags & TAP_FLAG_GSO)
+ && (args->tap_flags & TAP_FLAG_GRO_COALESCE))
{
- 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);
- virtio_vring_set_numa_node (vm, vif, RX_QUEUE (i));
+ virtio_set_packet_coalesce (vif);
}
+ if (vif->type == VIRTIO_IF_TYPE_TUN)
+ {
+ hw->max_supported_packet_bytes = TUN_MAX_PACKET_BYTES;
+ hw->min_packet_bytes = hw->min_supported_packet_bytes =
+ TUN_MIN_PACKET_BYTES;
+ hw->max_packet_bytes =
+ args->host_mtu_size ? args->host_mtu_size : TUN_DEFAULT_PACKET_BYTES;
+ vnet_sw_interface_set_mtu (vnm, hw->sw_if_index, hw->max_packet_bytes);
+ }
+
+ virtio_vring_set_rx_queues (vm, vif);
vif->per_interface_next_index = ~0;
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;
{
vnet_main_t *vnm = vnet_get_main ();
virtio_main_t *mm = &virtio_main;
- int i;
virtio_if_t *vif;
vnet_hw_interface_t *hw;
/* 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);
- for (i = 0; i < vif->num_rxqs; i++)
- vnet_hw_interface_unassign_rx_thread (vnm, vif->hw_if_index, i);
if (vif->type == VIRTIO_IF_TYPE_TAP)
ethernet_delete_interface (vnm, vif->hw_if_index);
vif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
- if (vif->type == VIRTIO_IF_TYPE_TUN)
- return VNET_API_ERROR_UNIMPLEMENTED;
-
const unsigned int csum_offload_on = TUN_F_CSUM;
const unsigned int csum_offload_off = 0;
unsigned int offload = enable_disable ? csum_offload_on : csum_offload_off;
vec_foreach_index (i, vif->tap_fds)
_IOCTL (vif->tap_fds[i], TUNSETOFFLOAD, offload);
vif->gso_enabled = 0;
+ vif->packet_coalesce = 0;
vif->csum_offload_enabled = enable_disable ? 1 : 0;
- if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) != 0)
+ if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) != 0)
{
- hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO;
+ hw->caps &= ~VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO;
}
if (enable_disable)
{
- if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) ==
- 0)
- {
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
- }
+ hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
}
else
{
- if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) !=
- 0)
- {
- hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
- }
+ hw->caps &= ~VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
}
error:
}
int
-tap_gso_enable_disable (vlib_main_t * vm, u32 sw_if_index, int enable_disable)
+tap_gso_enable_disable (vlib_main_t * vm, u32 sw_if_index, int enable_disable,
+ int is_packet_coalesce)
{
vnet_main_t *vnm = vnet_get_main ();
virtio_main_t *mm = &virtio_main;
vif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
- if (vif->type == VIRTIO_IF_TYPE_TUN)
- return VNET_API_ERROR_UNIMPLEMENTED;
-
const unsigned int gso_on = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6;
const unsigned int gso_off = 0;
unsigned int offload = enable_disable ? gso_on : gso_off;
vif->csum_offload_enabled = 0;
if (enable_disable)
{
- if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0)
+ if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) == 0)
{
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
- VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+ hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+ VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
+ }
+ if (is_packet_coalesce)
+ {
+ virtio_set_packet_coalesce (vif);
}
}
else
{
- if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) != 0)
+ if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) != 0)
{
- hw->flags &= ~(VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
- VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+ hw->caps &= ~(VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+ VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM);
}
+ vif->packet_coalesce = 0;
}
error:
tap_interface_details_t *tapid = NULL;
/* *INDENT-OFF* */
- pool_foreach (vif, mm->interfaces,
- if (vif->type != VIRTIO_IF_TYPE_TAP)
+ pool_foreach (vif, mm->interfaces) {
+ if ((vif->type != VIRTIO_IF_TYPE_TAP)
+ && (vif->type != VIRTIO_IF_TYPE_TUN))
continue;
vec_add2(r_tapids, tapid, 1);
clib_memset (tapid, 0, sizeof (*tapid));
tapid->sw_if_index = vif->sw_if_index;
hi = vnet_get_hw_interface (vnm, vif->hw_if_index);
clib_memcpy(tapid->dev_name, hi->name,
- MIN (ARRAY_LEN (tapid->dev_name) - 1,
- strlen ((const char *) hi->name)));
+ MIN (ARRAY_LEN (tapid->dev_name) - 1, vec_len (hi->name)));
vring = vec_elt_at_index (vif->rxq_vrings, RX_QUEUE_ACCESS(0));
tapid->rx_ring_sz = vring->size;
vring = vec_elt_at_index (vif->txq_vrings, TX_QUEUE_ACCESS(0));
tapid->tx_ring_sz = vring->size;
+ tapid->tap_flags = vif->tap_flags;
clib_memcpy(&tapid->host_mac_addr, vif->host_mac_addr, 6);
if (vif->host_if_name)
{
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);
clib_memcpy(tapid->host_ip6_addr.as_u8, &vif->host_ip6_addr, 16);
tapid->host_ip6_prefix_len = vif->host_ip6_prefix_len;
tapid->host_mtu_size = vif->host_mtu_size;
- );
+ }
/* *INDENT-ON* */
*out_tapids = r_tapids;
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 = clib_netns_open (NULL /* self */);
+ if ((nfd = clib_netns_open (vif->net_ns)) == -1)
+ {
+ clib_warning ("Cannot open netns");
+ goto done;
+ }
+ if (clib_setns (nfd) == -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 (clib_setns (old_netns_fd) == -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