* limitations under the License.
*/
#include <vnet/vxlan/vxlan.h>
+#include <vnet/ip/format.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/dpo/receive_dpo.h>
+#include <vlib/vlib.h>
+
+/**
+ * @file
+ * @brief VXLAN.
+ *
+ * VXLAN provides the features needed to allow L2 bridge domains (BDs)
+ * to span multiple servers. This is done by building an L2 overlay on
+ * top of an L3 network underlay using VXLAN tunnels.
+ *
+ * This makes it possible for servers to be co-located in the same data
+ * center or be separated geographically as long as they are reachable
+ * through the underlay L3 network.
+ *
+ * You can refer to this kind of L2 overlay bridge domain as a VXLAN
+ * (Virtual eXtensible VLAN) segment.
+ */
+
vxlan_main_t vxlan_main;
return format (s, "drop");
case VXLAN_INPUT_NEXT_L2_INPUT:
return format (s, "l2");
- case VXLAN_INPUT_NEXT_IP4_INPUT:
- return format (s, "ip4");
- case VXLAN_INPUT_NEXT_IP6_INPUT:
- return format (s, "ip6");
default:
- return format (s, "unknown %d", next_index);
+ return format (s, "index %d", next_index);
}
return s;
}
vxlan_tunnel_t * t = va_arg (*args, vxlan_tunnel_t *);
vxlan_main_t * ngm = &vxlan_main;
- s = format (s,
- "[%d] %U (src) %U (dst) vni %d encap_fib_index %d",
+ s = format (s, "[%d] src %U dst %U vni %d sw_if_index %d ",
t - ngm->tunnels,
- format_ip4_address, &t->src,
- format_ip4_address, &t->dst,
- t->vni,
- t->encap_fib_index);
- s = format (s, " decap_next %U\n", format_decap_next, t->decap_next_index);
+ format_ip46_address, &t->src, IP46_TYPE_ANY,
+ format_ip46_address, &t->dst, IP46_TYPE_ANY,
+ t->vni, t->sw_if_index);
+
+ if (ip46_address_is_multicast (&t->dst))
+ s = format (s, "mcast_sw_if_index %d ", t->mcast_sw_if_index);
+
+ s = format (s, "encap_fib_index %d fib_entry_index %d decap_next %U\n",
+ t->encap_fib_index, t->fib_entry_index,
+ format_decap_next, t->decap_next_index);
return s;
}
return frame->n_vectors;
}
+static clib_error_t *
+vxlan_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
+{
+ if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
+ vnet_hw_interface_set_flags (vnm, hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP);
+ else
+ vnet_hw_interface_set_flags (vnm, hw_if_index, 0);
+
+ return /* no error */ 0;
+}
+
VNET_DEVICE_CLASS (vxlan_device_class,static) = {
.name = "VXLAN",
.format_device_name = format_vxlan_name,
.format_tx_trace = format_vxlan_encap_trace,
.tx_function = dummy_interface_tx,
+ .admin_up_down_function = vxlan_interface_admin_up_down,
};
-static uword dummy_set_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- u32 l3_type,
- void * dst_address,
- void * rewrite,
- uword max_rewrite_bytes)
-{
- return 0;
-}
-
static u8 * format_vxlan_header_with_length (u8 * s, va_list * args)
{
u32 dev_instance = va_arg (*args, u32);
VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = {
.name = "VXLAN",
.format_header = format_vxlan_header_with_length,
- .set_rewrite = dummy_set_rewrite,
+ .build_rewrite = default_build_rewrite,
+};
+
+static void
+vxlan_tunnel_restack_dpo(vxlan_tunnel_t * t)
+{
+ dpo_id_t dpo = DPO_INVALID;
+ u32 encap_index = ip46_address_is_ip4(&t->dst) ?
+ vxlan4_encap_node.index : vxlan6_encap_node.index;
+ fib_forward_chain_type_t forw_type = ip46_address_is_ip4(&t->dst) ?
+ FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6;
+
+ fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
+ dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
+ dpo_reset(&dpo);
+}
+
+static vxlan_tunnel_t *
+vxlan_tunnel_from_fib_node (fib_node_t *node)
+{
+#if (CLIB_DEBUG > 0)
+ ASSERT(FIB_NODE_TYPE_VXLAN_TUNNEL == node->fn_type);
+#endif
+ return ((vxlan_tunnel_t*) (((char*)node) -
+ STRUCT_OFFSET_OF(vxlan_tunnel_t, node)));
+}
+
+/**
+ * Function definition to backwalk a FIB node -
+ * Here we will restack the new dpo of VXLAN DIP to encap node.
+ */
+static fib_node_back_walk_rc_t
+vxlan_tunnel_back_walk (fib_node_t *node,
+ fib_node_back_walk_ctx_t *ctx)
+{
+ vxlan_tunnel_restack_dpo(vxlan_tunnel_from_fib_node(node));
+ return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+/**
+ * Function definition to get a FIB node from its index
+ */
+static fib_node_t*
+vxlan_tunnel_fib_node_get (fib_node_index_t index)
+{
+ vxlan_tunnel_t * t;
+ vxlan_main_t * vxm = &vxlan_main;
+
+ t = pool_elt_at_index(vxm->tunnels, index);
+
+ return (&t->node);
+}
+
+/**
+ * Function definition to inform the FIB node that its last lock has gone.
+ */
+static void
+vxlan_tunnel_last_lock_gone (fib_node_t *node)
+{
+ /*
+ * The VXLAN tunnel is a root of the graph. As such
+ * it never has children and thus is never locked.
+ */
+ ASSERT(0);
+}
+
+/*
+ * Virtual function table registered by VXLAN tunnels
+ * for participation in the FIB object graph.
+ */
+const static fib_node_vft_t vxlan_vft = {
+ .fnv_get = vxlan_tunnel_fib_node_get,
+ .fnv_last_lock = vxlan_tunnel_last_lock_gone,
+ .fnv_back_walk = vxlan_tunnel_back_walk,
};
+
#define foreach_copy_field \
-_(src.as_u32) \
-_(dst.as_u32) \
_(vni) \
+_(mcast_sw_if_index) \
_(encap_fib_index) \
-_(decap_next_index)
+_(decap_next_index) \
+_(src) \
+_(dst)
-static int vxlan_rewrite (vxlan_tunnel_t * t)
+static int vxlan4_rewrite (vxlan_tunnel_t * t)
{
u8 *rw = 0;
ip4_header_t * ip0;
ip0->protocol = IP_PROTOCOL_UDP;
/* we fix up the ip4 header length and checksum after-the-fact */
- ip0->src_address.as_u32 = t->src.as_u32;
- ip0->dst_address.as_u32 = t->dst.as_u32;
+ ip0->src_address.as_u32 = t->src.ip4.as_u32;
+ ip0->dst_address.as_u32 = t->dst.ip4.as_u32;
ip0->checksum = ip4_header_checksum (ip0);
/* UDP header, randomize src port on something, maybe? */
return (0);
}
+static int vxlan6_rewrite (vxlan_tunnel_t * t)
+{
+ u8 *rw = 0;
+ ip6_header_t * ip0;
+ ip6_vxlan_header_t * h0;
+ int len = sizeof (*h0);
+
+ vec_validate_aligned (rw, len-1, CLIB_CACHE_LINE_BYTES);
+
+ h0 = (ip6_vxlan_header_t *) rw;
+
+ /* Fixed portion of the (outer) ip6 header */
+ ip0 = &h0->ip6;
+ ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(6 << 28);
+ ip0->hop_limit = 255;
+ ip0->protocol = IP_PROTOCOL_UDP;
+
+ ip0->src_address.as_u64[0] = t->src.ip6.as_u64[0];
+ ip0->src_address.as_u64[1] = t->src.ip6.as_u64[1];
+ ip0->dst_address.as_u64[0] = t->dst.ip6.as_u64[0];
+ ip0->dst_address.as_u64[1] = t->dst.ip6.as_u64[1];
+
+ /* UDP header, randomize src port on something, maybe? */
+ h0->udp.src_port = clib_host_to_net_u16 (4789);
+ h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan);
+
+ /* VXLAN header */
+ vnet_set_vni_and_flags(&h0->vxlan, t->vni);
+
+ t->rewrite = rw;
+ return (0);
+}
+
+static int vxlan_check_decap_next(vxlan_main_t * vxm, u32 is_ip6, u32 decap_next_index)
+{
+ vlib_main_t * vm = vxm->vlib_main;
+ vlib_node_runtime_t *r;
+
+ if(!is_ip6)
+ {
+ r = vlib_node_get_runtime (vm, vxlan4_input_node.index);
+ if(decap_next_index >= r->n_next_nodes)
+ return 1;
+ }
+ else
+ {
+ r = vlib_node_get_runtime (vm, vxlan6_input_node.index);
+ if(decap_next_index >= r->n_next_nodes)
+ return 1;
+ }
+
+ return 0;
+}
+
int vnet_vxlan_add_del_tunnel
(vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp)
{
vxlan_main_t * vxm = &vxlan_main;
vxlan_tunnel_t *t = 0;
vnet_main_t * vnm = vxm->vnet_main;
- ip4_main_t * im4 = &ip4_main;
vnet_hw_interface_t * hi;
- uword * p;
+ uword * p, * pvtep;
u32 hw_if_index = ~0;
u32 sw_if_index = ~0;
int rv;
- vxlan_tunnel_key_t key;
-
- key.src = a->dst.as_u32; /* decap src in key is encap dst in config */
- key.vni = clib_host_to_net_u32 (a->vni << 8);
+ vxlan4_tunnel_key_t key4;
+ vxlan6_tunnel_key_t key6;
+ u32 is_ip6 = a->is_ip6;
- p = hash_get (vxm->vxlan_tunnel_by_key, key.as_u64);
+ if (!is_ip6)
+ {
+ key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
+ key4.vni = clib_host_to_net_u32 (a->vni << 8);
+ p = hash_get (vxm->vxlan4_tunnel_by_key, key4.as_u64);
+ if (ip4_address_is_multicast (&a->dst.ip4))
+ pvtep = hash_get (vxm->vtep4, a->dst.ip4.as_u32);
+ else
+ pvtep = hash_get (vxm->vtep4, a->src.ip4.as_u32);
+ }
+ else
+ {
+ key6.src.as_u64[0] = a->dst.ip6.as_u64[0];
+ key6.src.as_u64[1] = a->dst.ip6.as_u64[1];
+ key6.vni = clib_host_to_net_u32 (a->vni << 8);
+ p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6);
+ pvtep = NULL; /* ip6 vxlan-bypass not yet implemented */
+ }
if (a->is_add)
{
+ l2input_main_t * l2im = &l2input_main;
+
/* adding a tunnel: tunnel must not already exist */
if (p)
return VNET_API_ERROR_TUNNEL_EXIST;
- if (a->decap_next_index == ~0)
- a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
+ /*if not set explicitly, default to l2 */
+ if(a->decap_next_index == ~0)
+ a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
+ if (vxlan_check_decap_next(vxm, is_ip6, a->decap_next_index))
+ return VNET_API_ERROR_INVALID_DECAP_NEXT;
- if (a->decap_next_index >= VXLAN_INPUT_N_NEXT)
- return VNET_API_ERROR_INVALID_DECAP_NEXT;
-
pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
memset (t, 0, sizeof (*t));
foreach_copy_field;
#undef _
- rv = vxlan_rewrite (t);
+ /* copy the key */
+ if (is_ip6)
+ {
+ t->key6 = clib_mem_alloc (sizeof(vxlan6_tunnel_key_t));
+ clib_memcpy (t->key6, &key6, sizeof(key6));
+ }
+ else
+ {
+ t->key4 = 0; /* not yet used */
+ }
+
+ if (!is_ip6)
+ rv = vxlan4_rewrite (t);
+ else
+ rv = vxlan6_rewrite (t);
if (rv)
{
return rv;
}
- hash_set (vxm->vxlan_tunnel_by_key, key.as_u64, t - vxm->tunnels);
+ if (!is_ip6)
+ {
+ hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
+ if (pvtep)
+ pvtep[0]++;
+ else
+ {
+ if (ip4_address_is_multicast (&a->dst.ip4))
+ hash_set (vxm->vtep4, a->dst.ip4.as_u32, 1);
+ else
+ hash_set (vxm->vtep4, a->src.ip4.as_u32, 1);
+ }
+ }
+ else
+ hash_set_mem (vxm->vxlan6_tunnel_by_key, t->key6, t - vxm->tunnels);
if (vec_len (vxm->free_vxlan_tunnel_hw_if_indices) > 0)
{
(vnm, vxlan_device_class.index, t - vxm->tunnels,
vxlan_hw_class.index, t - vxm->tunnels);
hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->output_node_index = vxlan_encap_node.index;
}
t->hw_if_index = hw_if_index;
vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
- if (a->decap_next_index == VXLAN_INPUT_NEXT_L2_INPUT)
- {
- l2input_main_t * l2im = &l2input_main;
- /* setup l2 input config with l2 feature and bd 0 to drop packet */
- vec_validate (l2im->configs, sw_if_index);
- l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
- l2im->configs[sw_if_index].bd_index = 0;
- }
+ /* setup l2 input config with l2 feature and bd 0 to drop packet */
+ vec_validate (l2im->configs, sw_if_index);
+ l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
+ l2im->configs[sw_if_index].bd_index = 0;
+
vnet_sw_interface_set_flags (vnm, sw_if_index,
VNET_SW_INTERFACE_FLAG_ADMIN_UP);
- vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
- im4->fib_index_by_sw_if_index[sw_if_index] = t->encap_fib_index;
+ fib_node_init(&t->node, FIB_NODE_TYPE_VXLAN_TUNNEL);
+ fib_prefix_t tun_dst_pfx;
+ u32 encap_index = !is_ip6 ?
+ vxlan4_encap_node.index : vxlan6_encap_node.index;
+ vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL;
+
+ fib_prefix_from_ip46_addr(&t->dst, &tun_dst_pfx);
+ if (!ip46_address_is_multicast(&t->dst))
+ {
+ /* Unicast tunnel -
+ * source the FIB entry for the tunnel's destination
+ * and become a child thereof. The tunnel will then get poked
+ * when the forwarding for the entry updates, and the tunnel can
+ * re-stack accordingly
+ */
+ t->fib_entry_index = fib_table_entry_special_add
+ (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
+ FIB_ENTRY_FLAG_NONE, ADJ_INDEX_INVALID);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, t - vxm->tunnels);
+ vxlan_tunnel_restack_dpo(t);
+ }
+ else if (pvtep == NULL)
+ {
+ /* Multicast tunnel -
+ * as the same mcast group can be used for mutiple mcast tunnels
+ * with different VNIs, create the output fib adjecency only if
+ * it does not already exist
+ */
+ fib_protocol_t fp;
+ u8 mcast_mac[6];
+ if (!is_ip6) {
+ ip4_multicast_ethernet_address(mcast_mac, &t->dst.ip4);
+ fp = FIB_PROTOCOL_IP4;
+ } else {
+ ip6_multicast_ethernet_address(mcast_mac, t->dst.ip6.as_u32[0]);
+ fp = FIB_PROTOCOL_IP6;
+ }
+ t->mcast_adj_index = adj_rewrite_add_and_lock
+ (fp, fib_proto_to_link(fp), t->mcast_sw_if_index, mcast_mac);
+
+ flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
+
+ /* Stack mcast dst mac addr rewrite on encap */
+ dpo_proto_t dproto = fib_proto_to_dpo(fp);
+ dpo_id_t dpo = DPO_INVALID;
+
+ dpo_set (&dpo, DPO_ADJACENCY, dproto, t->mcast_adj_index);
+ dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
+ dpo_reset(&dpo);
+
+ /* Add local mcast adj. */
+ receive_dpo_add_or_lock(dproto, ~0, NULL, &dpo);
+ t->fib_entry_index = fib_table_entry_special_dpo_add
+ (t->encap_fib_index, &tun_dst_pfx,
+ FIB_SOURCE_SPECIAL, FIB_ENTRY_FLAG_NONE, &dpo);
+ dpo_reset(&dpo);
+ }
+
+ /* Set vxlan tunnel output node */
+ hi->output_node_index = encap_index;
+
+ vnet_get_sw_interface (vnet_get_main(), sw_if_index)->flood_class = flood_class;
}
else
{
/* deleting a tunnel: tunnel must exist */
- if (!p)
+ if (!p)
return VNET_API_ERROR_NO_SUCH_ENTRY;
t = pool_elt_at_index (vxm->tunnels, p[0]);
vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
- hash_unset (vxm->vxlan_tunnel_by_key, key.as_u64);
+ if (!ip46_address_is_multicast(&t->dst))
+ {
+ fib_entry_child_remove(t->fib_entry_index, t->sibling_index);
+ fib_table_entry_delete_index(t->fib_entry_index, FIB_SOURCE_RR);
+ fib_node_deinit(&t->node);
+ }
+ else if (pvtep == NULL || pvtep[0] == 1)
+ {
+ adj_unlock(t->mcast_adj_index);
+ fib_table_entry_delete_index(t->fib_entry_index, FIB_SOURCE_SPECIAL);
+ fib_node_deinit(&t->node);
+ }
+ if (!is_ip6)
+ {
+ hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64);
+ if (pvtep)
+ {
+ pvtep[0]--;
+ if (pvtep[0] == 0)
+ {
+ if (ip4_address_is_multicast (&a->dst.ip4))
+ hash_unset (vxm->vtep4, a->dst.ip4.as_u32);
+ else
+ hash_unset (vxm->vtep4, a->src.ip4.as_u32);
+ }
+ }
+ }
+ else
+ {
+ hash_unset_mem (vxm->vxlan6_tunnel_by_key, t->key6);
+ clib_mem_free (t->key6);
+ }
vec_free (t->rewrite);
- t->rewrite = vxlan_dummy_rewrite;
pool_put (vxm->tunnels, t);
}
return 0;
}
-static u32 fib_index_from_fib_id (u32 fib_id)
+static u32 fib4_index_from_fib_id (u32 fib_id)
{
ip4_main_t * im = &ip4_main;
uword * p;
return p[0];
}
+static u32 fib6_index_from_fib_id (u32 fib_id)
+{
+ ip6_main_t * im = &ip6_main;
+ uword * p;
+
+ p = hash_get (im->fib_index_by_table_id, fib_id);
+ if (!p)
+ return ~0;
+
+ return p[0];
+}
+
+static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
+{
+ vxlan_main_t * vxm = &vxlan_main;
+ vlib_main_t * vm = vxm->vlib_main;
+ uword next_index = ~0;
+
+ if (ipv4_set)
+ {
+ next_index = vlib_node_add_next (vm, vxlan4_input_node.index, node_index);
+ }
+ else
+ {
+ next_index = vlib_node_add_next (vm, vxlan6_input_node.index, node_index);
+ }
+
+ return next_index;
+}
+
static uword unformat_decap_next (unformat_input_t * input, va_list * args)
{
u32 * result = va_arg (*args, u32 *);
+ u32 ipv4_set = va_arg (*args, int);
+ vxlan_main_t * vxm = &vxlan_main;
+ vlib_main_t * vm = vxm->vlib_main;
+ u32 node_index;
u32 tmp;
-
+
if (unformat (input, "l2"))
*result = VXLAN_INPUT_NEXT_L2_INPUT;
- else if (unformat (input, "drop"))
- *result = VXLAN_INPUT_NEXT_DROP;
- else if (unformat (input, "ip4"))
- *result = VXLAN_INPUT_NEXT_IP4_INPUT;
- else if (unformat (input, "ip6"))
- *result = VXLAN_INPUT_NEXT_IP6_INPUT;
+ else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
+ *result = get_decap_next_for_node(node_index, ipv4_set);
else if (unformat (input, "%d", &tmp))
*result = tmp;
else
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, * line_input = &_line_input;
- ip4_address_t src, dst;
+ ip46_address_t src , dst;
u8 is_add = 1;
u8 src_set = 0;
u8 dst_set = 0;
+ u8 grp_set = 0;
+ u8 ipv4_set = 0;
+ u8 ipv6_set = 0;
u32 encap_fib_index = 0;
- u32 decap_next_index = ~0;
+ u32 mcast_sw_if_index = ~0;
+ u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
u32 vni = 0;
u32 tmp;
int rv;
vnet_vxlan_add_del_tunnel_args_t _a, * a = &_a;
-
+ u32 tunnel_sw_if_index;
+
+ /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
+ memset(&src, 0, sizeof src);
+ memset(&dst, 0, sizeof dst);
+
/* Get a line of input. */
if (! unformat_user (input, unformat_line_input, line_input))
return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
if (unformat (line_input, "del"))
- is_add = 0;
+ {
+ is_add = 0;
+ }
+ else if (unformat (line_input, "src %U",
+ unformat_ip4_address, &src.ip4))
+ {
+ src_set = 1;
+ ipv4_set = 1;
+ }
+ else if (unformat (line_input, "dst %U",
+ unformat_ip4_address, &dst.ip4))
+ {
+ dst_set = 1;
+ ipv4_set = 1;
+ }
else if (unformat (line_input, "src %U",
- unformat_ip4_address, &src))
- src_set = 1;
+ unformat_ip6_address, &src.ip6))
+ {
+ src_set = 1;
+ ipv6_set = 1;
+ }
else if (unformat (line_input, "dst %U",
- unformat_ip4_address, &dst))
- dst_set = 1;
+ unformat_ip6_address, &dst.ip6))
+ {
+ dst_set = 1;
+ ipv6_set = 1;
+ }
+ else if (unformat (line_input, "group %U %U",
+ unformat_ip4_address, &dst.ip4,
+ unformat_vnet_sw_interface,
+ vnet_get_main(), &mcast_sw_if_index))
+ {
+ grp_set = dst_set = 1;
+ ipv4_set = 1;
+ }
+ else if (unformat (line_input, "group %U %U",
+ unformat_ip6_address, &dst.ip6,
+ unformat_vnet_sw_interface,
+ vnet_get_main(), &mcast_sw_if_index))
+ {
+ grp_set = dst_set = 1;
+ ipv6_set = 1;
+ }
else if (unformat (line_input, "encap-vrf-id %d", &tmp))
{
- encap_fib_index = fib_index_from_fib_id (tmp);
+ if (ipv6_set)
+ encap_fib_index = fib6_index_from_fib_id (tmp);
+ else
+ encap_fib_index = fib4_index_from_fib_id (tmp);
if (encap_fib_index == ~0)
return clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
}
else if (unformat (line_input, "decap-next %U", unformat_decap_next,
- &decap_next_index))
+ &decap_next_index, ipv4_set))
;
else if (unformat (line_input, "vni %d", &vni))
{
if (dst_set == 0)
return clib_error_return (0, "tunnel dst address not specified");
+ if (grp_set && !ip46_address_is_multicast(&dst))
+ return clib_error_return (0, "tunnel group address not multicast");
+
+ if (grp_set == 0 && ip46_address_is_multicast(&dst))
+ return clib_error_return (0, "dst address must be unicast");
+
+ if (grp_set && mcast_sw_if_index == ~0)
+ return clib_error_return (0, "tunnel nonexistent multicast device");
+
+ if (ipv4_set && ipv6_set)
+ return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
+
+ if (ip46_address_cmp(&src, &dst) == 0)
+ return clib_error_return (0, "src and dst addresses are identical");
+
+ if (decap_next_index == ~0)
+ return clib_error_return (0, "next node not found");
+
if (vni == 0)
return clib_error_return (0, "vni not specified");
memset (a, 0, sizeof (*a));
a->is_add = is_add;
+ a->is_ip6 = ipv6_set;
#define _(x) a->x = x;
foreach_copy_field;
#undef _
- rv = vnet_vxlan_add_del_tunnel (a, 0 /* hw_if_indexp */);
+ rv = vnet_vxlan_add_del_tunnel (a, &tunnel_sw_if_index);
switch(rv)
{
case 0:
+ if (is_add)
+ vlib_cli_output(vm, "%U\n", format_vnet_sw_if_index_name,
+ vnet_get_main(), tunnel_sw_if_index);
break;
- case VNET_API_ERROR_INVALID_DECAP_NEXT:
- return clib_error_return (0, "invalid decap-next...");
case VNET_API_ERROR_TUNNEL_EXIST:
return clib_error_return (0, "tunnel already exists...");
return 0;
}
+/*?
+ * Add or delete a VXLAN Tunnel.
+ *
+ * VXLAN provides the features needed to allow L2 bridge domains (BDs)
+ * to span multiple servers. This is done by building an L2 overlay on
+ * top of an L3 network underlay using VXLAN tunnels.
+ *
+ * This makes it possible for servers to be co-located in the same data
+ * center or be separated geographically as long as they are reachable
+ * through the underlay L3 network.
+ *
+ * You can refer to this kind of L2 overlay bridge domain as a VXLAN
+ * (Virtual eXtensible VLAN) segment.
+ *
+ * @cliexpar
+ * Example of how to create a VXLAN Tunnel:
+ * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
+ * Example of how to delete a VXLAN Tunnel:
+ * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
+ ?*/
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = {
.path = "create vxlan tunnel",
.short_help =
- "create vxlan tunnel src <local-vtep-addr> dst <remote-vtep-addr> vni <nn>"
- " [encap-vrf-id <nn>] [decap-next [l2|ip4|ip6] [del]\n",
+ "create vxlan tunnel src <local-vtep-addr>"
+ " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
+ " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
.function = vxlan_add_del_tunnel_command_fn,
};
+/* *INDENT-ON* */
static clib_error_t *
show_vxlan_tunnel_command_fn (vlib_main_t * vm,
return 0;
}
+/*?
+ * Display all the VXLAN Tunnel entries.
+ *
+ * @cliexpar
+ * Example of how to display the VXLAN Tunnel entries:
+ * @cliexstart{show vxlan tunnel}
+ * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_vxlan_tunnel_command, static) = {
.path = "show vxlan tunnel",
+ .short_help = "show vxlan tunnel",
.function = show_vxlan_tunnel_command_fn,
};
+/* *INDENT-ON* */
+
clib_error_t *vxlan_init (vlib_main_t *vm)
{
vxlan_main_t * vxm = &vxlan_main;
- ip4_vxlan_header_t * hdr;
- ip4_header_t * ip;
vxm->vnet_main = vnet_get_main();
vxm->vlib_main = vm;
- /* init dummy rewrite string for deleted vxlan tunnels */
- _vec_len(vxlan_dummy_rewrite) = sizeof(ip4_vxlan_header_t);
- hdr = (ip4_vxlan_header_t *) vxlan_dummy_rewrite;
- ip = &hdr->ip4;
- /* minimal rewrite setup, see vxlan_rewite() above as reference */
- ip->ip_version_and_header_length = 0x45;
- ip->checksum = ip4_header_checksum (ip);
-
+ /* initialize the ip6 hash */
+ vxm->vxlan6_tunnel_by_key = hash_create_mem(0,
+ sizeof(vxlan6_tunnel_key_t),
+ sizeof(uword));
+
udp_register_dst_port (vm, UDP_DST_PORT_vxlan,
- vxlan_input_node.index, 1 /* is_ip4 */);
+ vxlan4_input_node.index, /* is_ip4 */ 1);
+ udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
+ vxlan6_input_node.index, /* is_ip4 */ 0);
+
+ fib_node_register_type(FIB_NODE_TYPE_VXLAN_TUNNEL, &vxlan_vft);
+
return 0;
}
VLIB_INIT_FUNCTION(vxlan_init);
-
Code Review / vpp.git / blobdiff