#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
error:
vec_foreach_index (i, vif->tap_fds) close (vif->tap_fds[i]);
+ vec_free (vif->tap_fds);
vec_free (vif->vhost_fds);
vec_free (vif->rxq_vrings);
vec_free (vif->txq_vrings);
if (args->tap_flags & TAP_FLAG_ATTACH)
{
- if (args->host_if_name != NULL)
- {
- host_if_name = (char *) args->host_if_name;
- clib_memcpy (ifr.ifr_name, host_if_name,
- clib_min (IFNAMSIZ, vec_len (host_if_name)));
- }
- else
+ if (args->host_if_name == NULL)
{
args->rv = VNET_API_ERROR_NO_MATCHING_INTERFACE;
err = clib_error_return (0, "host_if_name is not provided");
goto error;
}
- if (args->host_namespace)
+ }
+
+ /* if namespace is specified, all further netlink messages should be executed
+ * after we change our net namespace */
+ if (args->host_namespace)
+ {
+ old_netns_fd = clib_netns_open (NULL /* self */);
+ if ((nfd = clib_netns_open (args->host_namespace)) == -1)
{
- old_netns_fd = open ("/proc/self/ns/net", O_RDONLY);
- if ((nfd = open_netns_fd ((char *) args->host_namespace)) == -1)
- {
- args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
- args->error = clib_error_return_unix (0, "open_netns_fd '%s'",
- args->host_namespace);
- goto error;
- }
- if (setns (nfd, CLONE_NEWNET) == -1)
- {
- args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
- args->error = clib_error_return_unix (0, "setns '%s'",
- args->host_namespace);
- goto error;
- }
+ args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
+ args->error = clib_error_return_unix (0, "clib_netns_open '%s'",
+ args->host_namespace);
+ goto error;
+ }
+ if (clib_setns (nfd) == -1)
+ {
+ args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
+ args->error =
+ clib_error_return_unix (0, "setns '%s'", args->host_namespace);
+ goto error;
}
}
+ if (args->host_if_name != NULL)
+ {
+ host_if_name = (char *) args->host_if_name;
+ clib_memcpy (ifr.ifr_name, host_if_name,
+ clib_min (IFNAMSIZ, vec_len (host_if_name)));
+ }
+
if ((tfd = open ("/dev/net/tun", O_RDWR | O_NONBLOCK)) < 0)
{
args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
virtio_set_net_hdr_size (vif);
- if (!(args->tap_flags & TAP_FLAG_ATTACH))
- {
- /* if namespace is specified, all further netlink messages should be executed
- 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)
- {
- args->rv = VNET_API_ERROR_SYSCALL_ERROR_2;
- args->error = clib_error_return_unix (0, "open_netns_fd '%s'",
- args->host_namespace);
- goto error;
- }
- args->error = vnet_netlink_set_link_netns (vif->ifindex, nfd,
- host_if_name);
- if (args->error)
- {
- args->rv = VNET_API_ERROR_NETLINK_ERROR;
- goto error;
- }
- if (setns (nfd, CLONE_NEWNET) == -1)
- {
- args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
- args->error = clib_error_return_unix (0, "setns '%s'",
- args->host_namespace);
- goto error;
- }
- if ((vif->ifindex = if_nametoindex (host_if_name)) == 0)
- {
- args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
- args->error = clib_error_return_unix (0, "if_nametoindex '%s'",
- host_if_name);
- goto error;
- }
- }
- else if (host_if_name)
- {
- args->error =
- vnet_netlink_set_link_name (vif->ifindex, host_if_name);
- if (args->error)
- {
- args->rv = VNET_API_ERROR_NETLINK_ERROR;
- goto error;
- }
- }
- }
-
if (vif->type == VIRTIO_IF_TYPE_TAP)
{
if (ethernet_mac_address_is_zero (args->host_mac_addr.bytes))
/* 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'",
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);
+ if (args->host_bridge)
+ 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);
+ if (args->host_namespace)
+ vif->net_ns = format (0, "%s%c", args->host_namespace, 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);
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;
}
if ((args->tap_flags & TAP_FLAG_GSO)
&& (args->tap_flags & TAP_FLAG_GRO_COALESCE))
{
virtio_set_packet_coalesce (vif);
}
- vnet_hw_interface_set_input_node (vnm, vif->hw_if_index,
- virtio_input_node.index);
-
- for (i = 0; i < vif->num_rxqs; i++)
+ if (vif->type == VIRTIO_IF_TYPE_TUN)
{
- 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_IF_RX_MODE_DEFAULT);
- virtio_vring_set_numa_node (vm, vif, RX_QUEUE (i));
+ 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,
* TUNSETCARRIER ioctl(). See tap_set_carrier().
*/
vif->host_carrier_up = 1;
- vif->cxq_vring = NULL;
goto done;
if (vhost_mem)
clib_mem_free (vhost_mem);
if (old_netns_fd != -1)
- close (old_netns_fd);
+ {
+ /* in case we errored with a switched netns */
+ clib_setns (old_netns_fd);
+ close (old_netns_fd);
+ }
if (nfd != -1)
close (nfd);
}
{
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->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:
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)
{
}
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;
}
tap_interface_details_t *tapid = NULL;
/* *INDENT-OFF* */
- pool_foreach (vif, mm->interfaces,
+ pool_foreach (vif, mm->interfaces) {
if ((vif->type != VIRTIO_IF_TYPE_TAP)
&& (vif->type != VIRTIO_IF_TYPE_TUN))
continue;
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;
if (vif->net_ns)
{
- old_netns_fd = open ("/proc/self/ns/net", O_RDONLY);
- if ((nfd = open_netns_fd ((char *) vif->net_ns)) == -1)
+ 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 (setns (nfd, CLONE_NEWNET) == -1)
+ if (clib_setns (nfd) == -1)
{
clib_warning ("Cannot set ns");
goto done;
done:
if (old_netns_fd != -1)
{
- if (setns (old_netns_fd, CLONE_NEWNET) == -1)
+ if (clib_setns (old_netns_fd) == -1)
{
clib_warning ("Cannot set old ns");
}
Code Review / vpp.git / blobdiff