| /* |
| * Copyright (c) 2015 Cisco and/or its affiliates. |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * 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/fib/fib_entry_track.h> |
| #include <vnet/mfib/mfib_table.h> |
| #include <vnet/adj/adj_mcast.h> |
| #include <vnet/adj/rewrite.h> |
| #include <vnet/interface.h> |
| #include <vnet/flow/flow.h> |
| #include <vnet/udp/udp_local.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; |
| |
| static u8 * |
| format_decap_next (u8 * s, va_list * args) |
| { |
| u32 next_index = va_arg (*args, u32); |
| |
| if (next_index == VXLAN_INPUT_NEXT_DROP) |
| return format (s, "drop"); |
| else |
| return format (s, "index %d", next_index); |
| return s; |
| } |
| |
| u8 * |
| format_vxlan_tunnel (u8 * s, va_list * args) |
| { |
| vxlan_tunnel_t *t = va_arg (*args, vxlan_tunnel_t *); |
| |
| s = format (s, |
| "[%d] instance %d src %U dst %U vni %d fib-idx %d sw-if-idx %d ", |
| t->dev_instance, t->user_instance, |
| format_ip46_address, &t->src, IP46_TYPE_ANY, |
| format_ip46_address, &t->dst, IP46_TYPE_ANY, |
| t->vni, t->encap_fib_index, t->sw_if_index); |
| |
| s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index); |
| |
| if (PREDICT_FALSE (t->decap_next_index != VXLAN_INPUT_NEXT_L2_INPUT)) |
| s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index); |
| |
| if (PREDICT_FALSE (ip46_address_is_multicast (&t->dst))) |
| s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index); |
| |
| if (t->flow_index != ~0) |
| s = format (s, "flow-index %d [%U]", t->flow_index, |
| format_flow_enabled_hw, t->flow_index); |
| |
| return s; |
| } |
| |
| static u8 * |
| format_vxlan_name (u8 * s, va_list * args) |
| { |
| u32 dev_instance = va_arg (*args, u32); |
| vxlan_main_t *vxm = &vxlan_main; |
| vxlan_tunnel_t *t; |
| |
| if (dev_instance == ~0) |
| return format (s, "<cached-unused>"); |
| |
| if (dev_instance >= vec_len (vxm->tunnels)) |
| return format (s, "<improperly-referenced>"); |
| |
| t = pool_elt_at_index (vxm->tunnels, dev_instance); |
| |
| return format (s, "vxlan_tunnel%d", t->user_instance); |
| } |
| |
| static clib_error_t * |
| vxlan_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) |
| { |
| u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? |
| VNET_HW_INTERFACE_FLAG_LINK_UP : 0; |
| vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags); |
| |
| return /* no error */ 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VNET_DEVICE_CLASS (vxlan_device_class, static) = { |
| .name = "VXLAN", |
| .format_device_name = format_vxlan_name, |
| .format_tx_trace = format_vxlan_encap_trace, |
| .admin_up_down_function = vxlan_interface_admin_up_down, |
| }; |
| /* *INDENT-ON* */ |
| |
| static u8 * |
| format_vxlan_header_with_length (u8 * s, va_list * args) |
| { |
| u32 dev_instance = va_arg (*args, u32); |
| s = format (s, "unimplemented dev %u", dev_instance); |
| return s; |
| } |
| |
| /* *INDENT-OFF* */ |
| VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = { |
| .name = "VXLAN", |
| .format_header = format_vxlan_header_with_length, |
| .build_rewrite = default_build_rewrite, |
| }; |
| /* *INDENT-ON* */ |
| |
| static void |
| vxlan_tunnel_restack_dpo (vxlan_tunnel_t * t) |
| { |
| u8 is_ip4 = ip46_address_is_ip4 (&t->dst); |
| dpo_id_t dpo = DPO_INVALID; |
| fib_forward_chain_type_t forw_type = is_ip4 ? |
| FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6; |
| |
| fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo); |
| |
| /* vxlan uses the payload hash as the udp source port |
| * hence the packet's hash is unknown |
| * skip single bucket load balance dpo's */ |
| while (DPO_LOAD_BALANCE == dpo.dpoi_type) |
| { |
| load_balance_t *lb = load_balance_get (dpo.dpoi_index); |
| if (lb->lb_n_buckets > 1) |
| break; |
| |
| dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0)); |
| } |
| |
| u32 encap_index = is_ip4 ? |
| vxlan4_encap_node.index : vxlan6_encap_node.index; |
| 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) |
| { |
| ASSERT (FIB_NODE_TYPE_VXLAN_TUNNEL == node->fn_type); |
| 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 \ |
| _(vni) \ |
| _(mcast_sw_if_index) \ |
| _(encap_fib_index) \ |
| _(decap_next_index) \ |
| _(src) \ |
| _(dst) |
| |
| static void |
| vxlan_rewrite (vxlan_tunnel_t * t, bool is_ip6) |
| { |
| union |
| { |
| ip4_vxlan_header_t h4; |
| ip6_vxlan_header_t h6; |
| } h; |
| int len = is_ip6 ? sizeof h.h6 : sizeof h.h4; |
| |
| udp_header_t *udp; |
| vxlan_header_t *vxlan; |
| /* Fixed portion of the (outer) ip header */ |
| |
| clib_memset (&h, 0, sizeof (h)); |
| if (!is_ip6) |
| { |
| ip4_header_t *ip = &h.h4.ip4; |
| udp = &h.h4.udp, vxlan = &h.h4.vxlan; |
| ip->ip_version_and_header_length = 0x45; |
| ip->ttl = 254; |
| ip->protocol = IP_PROTOCOL_UDP; |
| |
| ip->src_address = t->src.ip4; |
| ip->dst_address = t->dst.ip4; |
| |
| /* we fix up the ip4 header length and checksum after-the-fact */ |
| ip->checksum = ip4_header_checksum (ip); |
| } |
| else |
| { |
| ip6_header_t *ip = &h.h6.ip6; |
| udp = &h.h6.udp, vxlan = &h.h6.vxlan; |
| ip->ip_version_traffic_class_and_flow_label = |
| clib_host_to_net_u32 (6 << 28); |
| ip->hop_limit = 255; |
| ip->protocol = IP_PROTOCOL_UDP; |
| |
| ip->src_address = t->src.ip6; |
| ip->dst_address = t->dst.ip6; |
| } |
| |
| /* UDP header, randomize src port on something, maybe? */ |
| udp->src_port = clib_host_to_net_u16 (4789); |
| udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan); |
| |
| /* VXLAN header */ |
| vnet_set_vni_and_flags (vxlan, t->vni); |
| vnet_rewrite_set_data (*t, &h, len); |
| } |
| |
| static bool |
| vxlan_decap_next_is_valid (vxlan_main_t * vxm, u32 is_ip6, |
| u32 decap_next_index) |
| { |
| vlib_main_t *vm = vxm->vlib_main; |
| u32 input_idx = (!is_ip6) ? |
| vxlan4_input_node.index : vxlan6_input_node.index; |
| vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx); |
| |
| return decap_next_index < r->n_next_nodes; |
| } |
| |
| /* *INDENT-OFF* */ |
| typedef CLIB_PACKED(union |
| { |
| struct |
| { |
| fib_node_index_t mfib_entry_index; |
| adj_index_t mcast_adj_index; |
| }; |
| u64 as_u64; |
| }) mcast_shared_t; |
| /* *INDENT-ON* */ |
| |
| static inline mcast_shared_t |
| mcast_shared_get (ip46_address_t * ip) |
| { |
| ASSERT (ip46_address_is_multicast (ip)); |
| uword *p = hash_get_mem (vxlan_main.mcast_shared, ip); |
| ALWAYS_ASSERT (p); |
| mcast_shared_t ret = {.as_u64 = *p }; |
| return ret; |
| } |
| |
| static inline void |
| mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai) |
| { |
| mcast_shared_t new_ep = { |
| .mcast_adj_index = ai, |
| .mfib_entry_index = mfei, |
| }; |
| |
| hash_set_mem_alloc (&vxlan_main.mcast_shared, dst, new_ep.as_u64); |
| } |
| |
| static inline void |
| mcast_shared_remove (ip46_address_t * dst) |
| { |
| mcast_shared_t ep = mcast_shared_get (dst); |
| |
| adj_unlock (ep.mcast_adj_index); |
| mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_VXLAN); |
| |
| hash_unset_mem_free (&vxlan_main.mcast_shared, dst); |
| } |
| |
| int vnet_vxlan_add_del_tunnel |
| (vnet_vxlan_add_del_tunnel_args_t * a, u32 * sw_if_indexp) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| vnet_main_t *vnm = vxm->vnet_main; |
| vxlan_decap_info_t *p; |
| u32 sw_if_index = ~0; |
| vxlan4_tunnel_key_t key4; |
| vxlan6_tunnel_key_t key6; |
| u32 is_ip6 = a->is_ip6; |
| |
| int not_found; |
| if (!is_ip6) |
| { |
| /* ip4 mcast is indexed by mcast addr only */ |
| key4.key[0] = ip46_address_is_multicast (&a->dst) ? |
| a->dst.ip4.as_u32 : |
| a->dst.ip4.as_u32 | (((u64) a->src.ip4.as_u32) << 32); |
| key4.key[1] = (((u64) a->encap_fib_index) << 32) |
| | clib_host_to_net_u32 (a->vni << 8); |
| not_found = |
| clib_bihash_search_inline_16_8 (&vxm->vxlan4_tunnel_by_key, &key4); |
| p = (void *) &key4.value; |
| } |
| else |
| { |
| key6.key[0] = a->dst.ip6.as_u64[0]; |
| key6.key[1] = a->dst.ip6.as_u64[1]; |
| key6.key[2] = (((u64) a->encap_fib_index) << 32) |
| | clib_host_to_net_u32 (a->vni << 8); |
| not_found = |
| clib_bihash_search_inline_24_8 (&vxm->vxlan6_tunnel_by_key, &key6); |
| p = (void *) &key6.value; |
| } |
| |
| if (not_found) |
| p = 0; |
| |
| if (a->is_add) |
| { |
| l2input_main_t *l2im = &l2input_main; |
| u32 dev_instance; /* real dev instance tunnel index */ |
| u32 user_instance; /* request and actual instance number */ |
| |
| /* adding a tunnel: tunnel must not already exist */ |
| if (p) |
| return VNET_API_ERROR_TUNNEL_EXIST; |
| |
| /*if not set explicitly, default to l2 */ |
| if (a->decap_next_index == ~0) |
| a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT; |
| if (!vxlan_decap_next_is_valid (vxm, is_ip6, a->decap_next_index)) |
| return VNET_API_ERROR_INVALID_DECAP_NEXT; |
| |
| vxlan_tunnel_t *t; |
| pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES); |
| clib_memset (t, 0, sizeof (*t)); |
| dev_instance = t - vxm->tunnels; |
| |
| /* copy from arg structure */ |
| #define _(x) t->x = a->x; |
| foreach_copy_field; |
| #undef _ |
| |
| vxlan_rewrite (t, is_ip6); |
| /* |
| * Reconcile the real dev_instance and a possible requested instance. |
| */ |
| user_instance = a->instance; |
| if (user_instance == ~0) |
| user_instance = dev_instance; |
| if (hash_get (vxm->instance_used, user_instance)) |
| { |
| pool_put (vxm->tunnels, t); |
| return VNET_API_ERROR_INSTANCE_IN_USE; |
| } |
| hash_set (vxm->instance_used, user_instance, 1); |
| |
| t->dev_instance = dev_instance; /* actual */ |
| t->user_instance = user_instance; /* name */ |
| t->flow_index = ~0; |
| |
| t->hw_if_index = vnet_register_interface |
| (vnm, vxlan_device_class.index, dev_instance, |
| vxlan_hw_class.index, dev_instance); |
| vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, t->hw_if_index); |
| |
| /* Set vxlan tunnel output node */ |
| u32 encap_index = !is_ip6 ? |
| vxlan4_encap_node.index : vxlan6_encap_node.index; |
| vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index); |
| |
| t->sw_if_index = sw_if_index = hi->sw_if_index; |
| |
| /* copy the key */ |
| int add_failed; |
| if (is_ip6) |
| { |
| key6.value = (u64) dev_instance; |
| add_failed = clib_bihash_add_del_24_8 (&vxm->vxlan6_tunnel_by_key, |
| &key6, 1 /*add */ ); |
| } |
| else |
| { |
| vxlan_decap_info_t di = {.sw_if_index = t->sw_if_index, }; |
| if (ip46_address_is_multicast (&t->dst)) |
| di.local_ip = t->src.ip4; |
| else |
| di.next_index = t->decap_next_index; |
| key4.value = di.as_u64; |
| add_failed = clib_bihash_add_del_16_8 (&vxm->vxlan4_tunnel_by_key, |
| &key4, 1 /*add */ ); |
| } |
| |
| if (add_failed) |
| { |
| vnet_delete_hw_interface (vnm, t->hw_if_index); |
| hash_unset (vxm->instance_used, t->user_instance); |
| pool_put (vxm->tunnels, t); |
| return VNET_API_ERROR_INVALID_REGISTRATION; |
| } |
| |
| 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] = dev_instance; |
| |
| /* 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_t *si = vnet_get_sw_interface (vnm, sw_if_index); |
| si->flags &= ~VNET_SW_INTERFACE_FLAG_HIDDEN; |
| vnet_sw_interface_set_flags (vnm, sw_if_index, |
| VNET_SW_INTERFACE_FLAG_ADMIN_UP); |
| |
| fib_node_init (&t->node, FIB_NODE_TYPE_VXLAN_TUNNEL); |
| fib_prefix_t tun_dst_pfx; |
| 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 |
| */ |
| vtep_addr_ref (&vxm->vtep_table, t->encap_fib_index, &t->src); |
| t->fib_entry_index = fib_entry_track (t->encap_fib_index, |
| &tun_dst_pfx, |
| FIB_NODE_TYPE_VXLAN_TUNNEL, |
| dev_instance, |
| &t->sibling_index); |
| vxlan_tunnel_restack_dpo (t); |
| } |
| else |
| { |
| /* Multicast tunnel - |
| * as the same mcast group can be used for multiple mcast tunnels |
| * with different VNIs, create the output fib adjacency only if |
| * it does not already exist |
| */ |
| fib_protocol_t fp = fib_ip_proto (is_ip6); |
| |
| if (vtep_addr_ref (&vxm->vtep_table, |
| t->encap_fib_index, &t->dst) == 1) |
| { |
| fib_node_index_t mfei; |
| adj_index_t ai; |
| fib_route_path_t path = { |
| .frp_proto = fib_proto_to_dpo (fp), |
| .frp_addr = zero_addr, |
| .frp_sw_if_index = 0xffffffff, |
| .frp_fib_index = ~0, |
| .frp_weight = 1, |
| .frp_flags = FIB_ROUTE_PATH_LOCAL, |
| .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD, |
| }; |
| const mfib_prefix_t mpfx = { |
| .fp_proto = fp, |
| .fp_len = (is_ip6 ? 128 : 32), |
| .fp_grp_addr = tun_dst_pfx.fp_addr, |
| }; |
| |
| /* |
| * Setup the (*,G) to receive traffic on the mcast group |
| * - the forwarding interface is for-us |
| * - the accepting interface is that from the API |
| */ |
| mfib_table_entry_path_update (t->encap_fib_index, |
| &mpfx, MFIB_SOURCE_VXLAN, &path); |
| |
| path.frp_sw_if_index = a->mcast_sw_if_index; |
| path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE; |
| path.frp_mitf_flags = MFIB_ITF_FLAG_ACCEPT; |
| mfei = mfib_table_entry_path_update (t->encap_fib_index, |
| &mpfx, |
| MFIB_SOURCE_VXLAN, &path); |
| |
| /* |
| * Create the mcast adjacency to send traffic to the group |
| */ |
| ai = adj_mcast_add_or_lock (fp, |
| fib_proto_to_link (fp), |
| a->mcast_sw_if_index); |
| |
| /* |
| * create a new end-point |
| */ |
| mcast_shared_add (&t->dst, mfei, ai); |
| } |
| |
| dpo_id_t dpo = DPO_INVALID; |
| mcast_shared_t ep = mcast_shared_get (&t->dst); |
| |
| /* Stack shared mcast dst mac addr rewrite on encap */ |
| dpo_set (&dpo, DPO_ADJACENCY_MCAST, |
| fib_proto_to_dpo (fp), ep.mcast_adj_index); |
| |
| dpo_stack_from_node (encap_index, &t->next_dpo, &dpo); |
| dpo_reset (&dpo); |
| flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER; |
| } |
| |
| vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class = |
| flood_class; |
| } |
| else |
| { |
| /* deleting a tunnel: tunnel must exist */ |
| if (!p) |
| return VNET_API_ERROR_NO_SUCH_ENTRY; |
| |
| u32 instance = is_ip6 ? key6.value : |
| vxm->tunnel_index_by_sw_if_index[p->sw_if_index]; |
| vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, instance); |
| |
| sw_if_index = t->sw_if_index; |
| vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ ); |
| |
| vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0; |
| |
| if (!is_ip6) |
| clib_bihash_add_del_16_8 (&vxm->vxlan4_tunnel_by_key, &key4, |
| 0 /*del */ ); |
| else |
| clib_bihash_add_del_24_8 (&vxm->vxlan6_tunnel_by_key, &key6, |
| 0 /*del */ ); |
| |
| if (!ip46_address_is_multicast (&t->dst)) |
| { |
| if (t->flow_index != ~0) |
| vnet_flow_del (vnm, t->flow_index); |
| |
| vtep_addr_unref (&vxm->vtep_table, t->encap_fib_index, &t->src); |
| fib_entry_untrack (t->fib_entry_index, t->sibling_index); |
| } |
| else if (vtep_addr_unref (&vxm->vtep_table, |
| t->encap_fib_index, &t->dst) == 0) |
| { |
| mcast_shared_remove (&t->dst); |
| } |
| |
| vnet_delete_hw_interface (vnm, t->hw_if_index); |
| hash_unset (vxm->instance_used, t->user_instance); |
| |
| fib_node_deinit (&t->node); |
| pool_put (vxm->tunnels, t); |
| } |
| |
| if (sw_if_indexp) |
| *sw_if_indexp = sw_if_index; |
| |
| if (a->is_add) |
| { |
| /* register udp ports */ |
| if (!is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_vxlan, 1)) |
| udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan, |
| vxlan4_input_node.index, 1); |
| if (is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_vxlan6, 0)) |
| udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6, |
| vxlan6_input_node.index, 0); |
| } |
| |
| return 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 input_node = (ipv4_set) ? vxlan4_input_node.index : |
| vxlan6_input_node.index; |
| |
| return vlib_node_add_next (vm, input_node, node_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, "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 |
| return 0; |
| return 1; |
| } |
| |
| static clib_error_t * |
| vxlan_add_del_tunnel_command_fn (vlib_main_t * vm, |
| unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| unformat_input_t _line_input, *line_input = &_line_input; |
| ip46_address_t src = ip46_address_initializer, dst = |
| ip46_address_initializer; |
| 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 instance = ~0; |
| u32 encap_fib_index = 0; |
| u32 mcast_sw_if_index = ~0; |
| u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT; |
| u32 vni = 0; |
| u32 table_id; |
| clib_error_t *parse_error = NULL; |
| |
| /* 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; |
| } |
| else if (unformat (line_input, "instance %d", &instance)) |
| ; |
| else if (unformat (line_input, "src %U", |
| unformat_ip46_address, &src, IP46_TYPE_ANY)) |
| { |
| src_set = 1; |
| ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1); |
| } |
| else if (unformat (line_input, "dst %U", |
| unformat_ip46_address, &dst, IP46_TYPE_ANY)) |
| { |
| dst_set = 1; |
| ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1); |
| } |
| else if (unformat (line_input, "group %U %U", |
| unformat_ip46_address, &dst, IP46_TYPE_ANY, |
| unformat_vnet_sw_interface, |
| vnet_get_main (), &mcast_sw_if_index)) |
| { |
| grp_set = dst_set = 1; |
| ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1); |
| } |
| else if (unformat (line_input, "encap-vrf-id %d", &table_id)) |
| { |
| encap_fib_index = |
| fib_table_find (fib_ip_proto (ipv6_set), table_id); |
| } |
| else if (unformat (line_input, "decap-next %U", unformat_decap_next, |
| &decap_next_index, ipv4_set)) |
| ; |
| else if (unformat (line_input, "vni %d", &vni)) |
| ; |
| else |
| { |
| parse_error = clib_error_return (0, "parse error: '%U'", |
| format_unformat_error, line_input); |
| break; |
| } |
| } |
| |
| unformat_free (line_input); |
| |
| if (parse_error) |
| return parse_error; |
| |
| if (encap_fib_index == ~0) |
| return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id); |
| |
| if (src_set == 0) |
| return clib_error_return (0, "tunnel src address not specified"); |
| |
| 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"); |
| |
| if (vni >> 24) |
| return clib_error_return (0, "vni %d out of range", vni); |
| |
| vnet_vxlan_add_del_tunnel_args_t a = { |
| .is_add = is_add, |
| .is_ip6 = ipv6_set, |
| .instance = instance, |
| #define _(x) .x = x, |
| foreach_copy_field |
| #undef _ |
| }; |
| |
| u32 tunnel_sw_if_index; |
| int 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_TUNNEL_EXIST: |
| return clib_error_return (0, "tunnel already exists..."); |
| |
| case VNET_API_ERROR_NO_SUCH_ENTRY: |
| return clib_error_return (0, "tunnel does not exist..."); |
| |
| case VNET_API_ERROR_INSTANCE_IN_USE: |
| return clib_error_return (0, "Instance is in use"); |
| |
| default: |
| return clib_error_return |
| (0, "vnet_vxlan_add_del_tunnel returned %d", rv); |
| } |
| |
| 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 create a VXLAN Tunnel with a known name, vxlan_tunnel42: |
| * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 instance 42} |
| * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_tunnel23: |
| * @cliexcmd{create vxlan tunnel src 10.0.3.1 group 239.1.1.1 GigabitEthernet0/8/0 instance 23} |
| * 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>|group <mcast-vtep-addr> <intf-name>} vni <nn>" |
| " [instance <id>]" |
| " [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, |
| unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| vxlan_tunnel_t *t; |
| int raw = 0; |
| |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "raw")) |
| raw = 1; |
| else |
| return clib_error_return (0, "parse error: '%U'", |
| format_unformat_error, input); |
| } |
| |
| if (pool_elts (vxm->tunnels) == 0) |
| vlib_cli_output (vm, "No vxlan tunnels configured..."); |
| |
| /* *INDENT-OFF* */ |
| pool_foreach (t, vxm->tunnels) |
| { |
| vlib_cli_output (vm, "%U", format_vxlan_tunnel, t); |
| } |
| /* *INDENT-ON* */ |
| |
| if (raw) |
| { |
| vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n", |
| format_bihash_16_8, &vxm->vxlan4_tunnel_by_key, |
| 1 /* verbose */ ); |
| vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n", |
| format_bihash_24_8, &vxm->vxlan6_tunnel_by_key, |
| 1 /* verbose */ ); |
| } |
| |
| 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 [raw]", |
| .function = show_vxlan_tunnel_command_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| |
| void |
| vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| |
| if (pool_is_free_index (vxm->vnet_main->interface_main.sw_interfaces, |
| sw_if_index)) |
| return; |
| |
| is_enable = ! !is_enable; |
| |
| if (is_ip6) |
| { |
| if (clib_bitmap_get (vxm->bm_ip6_bypass_enabled_by_sw_if, sw_if_index) |
| != is_enable) |
| { |
| vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-bypass", |
| sw_if_index, is_enable, 0, 0); |
| vxm->bm_ip6_bypass_enabled_by_sw_if = |
| clib_bitmap_set (vxm->bm_ip6_bypass_enabled_by_sw_if, |
| sw_if_index, is_enable); |
| } |
| } |
| else |
| { |
| if (clib_bitmap_get (vxm->bm_ip4_bypass_enabled_by_sw_if, sw_if_index) |
| != is_enable) |
| { |
| vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass", |
| sw_if_index, is_enable, 0, 0); |
| vxm->bm_ip4_bypass_enabled_by_sw_if = |
| clib_bitmap_set (vxm->bm_ip4_bypass_enabled_by_sw_if, |
| sw_if_index, is_enable); |
| } |
| } |
| } |
| |
| |
| static clib_error_t * |
| set_ip_vxlan_bypass (u32 is_ip6, |
| unformat_input_t * input, vlib_cli_command_t * cmd) |
| { |
| unformat_input_t _line_input, *line_input = &_line_input; |
| vnet_main_t *vnm = vnet_get_main (); |
| clib_error_t *error = 0; |
| u32 sw_if_index, is_enable; |
| |
| sw_if_index = ~0; |
| is_enable = 1; |
| |
| if (!unformat_user (input, unformat_line_input, line_input)) |
| return 0; |
| |
| while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat_user |
| (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index)) |
| ; |
| else if (unformat (line_input, "del")) |
| is_enable = 0; |
| else |
| { |
| error = unformat_parse_error (line_input); |
| goto done; |
| } |
| } |
| |
| if (~0 == sw_if_index) |
| { |
| error = clib_error_return (0, "unknown interface `%U'", |
| format_unformat_error, line_input); |
| goto done; |
| } |
| |
| vnet_int_vxlan_bypass_mode (sw_if_index, is_ip6, is_enable); |
| |
| done: |
| unformat_free (line_input); |
| |
| return error; |
| } |
| |
| static clib_error_t * |
| set_ip4_vxlan_bypass (vlib_main_t * vm, |
| unformat_input_t * input, vlib_cli_command_t * cmd) |
| { |
| return set_ip_vxlan_bypass (0, input, cmd); |
| } |
| |
| /*? |
| * This command adds the 'ip4-vxlan-bypass' graph node for a given interface. |
| * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks |
| * for and validate input vxlan packet and bypass ip4-lookup, ip4-local, |
| * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will |
| * cause extra overhead to for non-vxlan packets which is kept at a minimum. |
| * |
| * @cliexpar |
| * @parblock |
| * Example of graph node before ip4-vxlan-bypass is enabled: |
| * @cliexstart{show vlib graph ip4-vxlan-bypass} |
| * Name Next Previous |
| * ip4-vxlan-bypass error-drop [0] |
| * vxlan4-input [1] |
| * ip4-lookup [2] |
| * @cliexend |
| * |
| * Example of how to enable ip4-vxlan-bypass on an interface: |
| * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0} |
| * |
| * Example of graph node after ip4-vxlan-bypass is enabled: |
| * @cliexstart{show vlib graph ip4-vxlan-bypass} |
| * Name Next Previous |
| * ip4-vxlan-bypass error-drop [0] ip4-input |
| * vxlan4-input [1] ip4-input-no-checksum |
| * ip4-lookup [2] |
| * @cliexend |
| * |
| * Example of how to display the feature enabled on an interface: |
| * @cliexstart{show ip interface features GigabitEthernet2/0/0} |
| * IP feature paths configured on GigabitEthernet2/0/0... |
| * ... |
| * ipv4 unicast: |
| * ip4-vxlan-bypass |
| * ip4-lookup |
| * ... |
| * @cliexend |
| * |
| * Example of how to disable ip4-vxlan-bypass on an interface: |
| * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del} |
| * @endparblock |
| ?*/ |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = { |
| .path = "set interface ip vxlan-bypass", |
| .function = set_ip4_vxlan_bypass, |
| .short_help = "set interface ip vxlan-bypass <interface> [del]", |
| }; |
| /* *INDENT-ON* */ |
| |
| static clib_error_t * |
| set_ip6_vxlan_bypass (vlib_main_t * vm, |
| unformat_input_t * input, vlib_cli_command_t * cmd) |
| { |
| return set_ip_vxlan_bypass (1, input, cmd); |
| } |
| |
| /*? |
| * This command adds the 'ip6-vxlan-bypass' graph node for a given interface. |
| * By adding the IPv6 vxlan-bypass graph node to an interface, the node checks |
| * for and validate input vxlan packet and bypass ip6-lookup, ip6-local, |
| * ip6-udp-lookup nodes to speedup vxlan packet forwarding. This node will |
| * cause extra overhead to for non-vxlan packets which is kept at a minimum. |
| * |
| * @cliexpar |
| * @parblock |
| * Example of graph node before ip6-vxlan-bypass is enabled: |
| * @cliexstart{show vlib graph ip6-vxlan-bypass} |
| * Name Next Previous |
| * ip6-vxlan-bypass error-drop [0] |
| * vxlan6-input [1] |
| * ip6-lookup [2] |
| * @cliexend |
| * |
| * Example of how to enable ip6-vxlan-bypass on an interface: |
| * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0} |
| * |
| * Example of graph node after ip6-vxlan-bypass is enabled: |
| * @cliexstart{show vlib graph ip6-vxlan-bypass} |
| * Name Next Previous |
| * ip6-vxlan-bypass error-drop [0] ip6-input |
| * vxlan6-input [1] ip4-input-no-checksum |
| * ip6-lookup [2] |
| * @cliexend |
| * |
| * Example of how to display the feature enabled on an interface: |
| * @cliexstart{show ip interface features GigabitEthernet2/0/0} |
| * IP feature paths configured on GigabitEthernet2/0/0... |
| * ... |
| * ipv6 unicast: |
| * ip6-vxlan-bypass |
| * ip6-lookup |
| * ... |
| * @cliexend |
| * |
| * Example of how to disable ip6-vxlan-bypass on an interface: |
| * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0 del} |
| * @endparblock |
| ?*/ |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (set_interface_ip6_vxlan_bypass_command, static) = { |
| .path = "set interface ip6 vxlan-bypass", |
| .function = set_ip6_vxlan_bypass, |
| .short_help = "set interface ip6 vxlan-bypass <interface> [del]", |
| }; |
| /* *INDENT-ON* */ |
| |
| int |
| vnet_vxlan_add_del_rx_flow (u32 hw_if_index, u32 t_index, int is_add) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, t_index); |
| vnet_main_t *vnm = vnet_get_main (); |
| if (is_add) |
| { |
| if (t->flow_index == ~0) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| vnet_flow_t flow = { |
| .actions = |
| VNET_FLOW_ACTION_REDIRECT_TO_NODE | VNET_FLOW_ACTION_MARK | |
| VNET_FLOW_ACTION_BUFFER_ADVANCE, |
| .mark_flow_id = t->dev_instance + vxm->flow_id_start, |
| .redirect_node_index = vxlan4_flow_input_node.index, |
| .buffer_advance = sizeof (ethernet_header_t), |
| .type = VNET_FLOW_TYPE_IP4_VXLAN, |
| .ip4_vxlan = { |
| .protocol.prot = IP_PROTOCOL_UDP, |
| .src_addr.addr = t->dst.ip4, |
| .dst_addr.addr = t->src.ip4, |
| .src_addr.mask.as_u32 = ~0, |
| .dst_addr.mask.as_u32 = ~0, |
| .dst_port.port = UDP_DST_PORT_vxlan, |
| .dst_port.mask = 0xFF, |
| .vni = t->vni, |
| } |
| , |
| }; |
| vnet_flow_add (vnm, &flow, &t->flow_index); |
| } |
| return vnet_flow_enable (vnm, t->flow_index, hw_if_index); |
| } |
| /* flow index is removed when the tunnel is deleted */ |
| return vnet_flow_disable (vnm, t->flow_index, hw_if_index); |
| } |
| |
| u32 |
| vnet_vxlan_get_tunnel_index (u32 sw_if_index) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| |
| if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index)) |
| return ~0; |
| return vxm->tunnel_index_by_sw_if_index[sw_if_index]; |
| } |
| |
| static clib_error_t * |
| vxlan_offload_command_fn (vlib_main_t * vm, |
| unformat_input_t * input, vlib_cli_command_t * cmd) |
| { |
| unformat_input_t _line_input, *line_input = &_line_input; |
| |
| /* Get a line of input. */ |
| if (!unformat_user (input, unformat_line_input, line_input)) |
| return 0; |
| |
| vnet_main_t *vnm = vnet_get_main (); |
| u32 rx_sw_if_index = ~0; |
| u32 hw_if_index = ~0; |
| int is_add = 1; |
| |
| while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (line_input, "hw %U", unformat_vnet_hw_interface, vnm, |
| &hw_if_index)) |
| continue; |
| if (unformat (line_input, "rx %U", unformat_vnet_sw_interface, vnm, |
| &rx_sw_if_index)) |
| continue; |
| if (unformat (line_input, "del")) |
| { |
| is_add = 0; |
| continue; |
| } |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, line_input); |
| } |
| |
| if (rx_sw_if_index == ~0) |
| return clib_error_return (0, "missing rx interface"); |
| if (hw_if_index == ~0) |
| return clib_error_return (0, "missing hw interface"); |
| |
| u32 t_index = vnet_vxlan_get_tunnel_index (rx_sw_if_index);; |
| if (t_index == ~0) |
| return clib_error_return (0, "%U is not a vxlan tunnel", |
| format_vnet_sw_if_index_name, vnm, |
| rx_sw_if_index); |
| |
| vxlan_main_t *vxm = &vxlan_main; |
| vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, t_index); |
| |
| if (!ip46_address_is_ip4 (&t->dst)) |
| return clib_error_return (0, "currently only IPV4 tunnels are supported"); |
| |
| vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index); |
| ip4_main_t *im = &ip4_main; |
| u32 rx_fib_index = |
| vec_elt (im->fib_index_by_sw_if_index, hw_if->sw_if_index); |
| |
| if (t->encap_fib_index != rx_fib_index) |
| return clib_error_return (0, "interface/tunnel fib mismatch"); |
| |
| if (vnet_vxlan_add_del_rx_flow (hw_if_index, t_index, is_add)) |
| return clib_error_return (0, "error %s flow", |
| is_add ? "enabling" : "disabling"); |
| |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (vxlan_offload_command, static) = { |
| .path = "set flow-offload vxlan", |
| .short_help = |
| "set flow-offload vxlan hw <interface-name> rx <tunnel-name> [del]", |
| .function = vxlan_offload_command_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| #define VXLAN_HASH_NUM_BUCKETS (2 * 1024) |
| #define VXLAN_HASH_MEMORY_SIZE (1 << 20) |
| |
| clib_error_t * |
| vxlan_init (vlib_main_t * vm) |
| { |
| vxlan_main_t *vxm = &vxlan_main; |
| |
| vxm->vnet_main = vnet_get_main (); |
| vxm->vlib_main = vm; |
| |
| vnet_flow_get_range (vxm->vnet_main, "vxlan", 1024 * 1024, |
| &vxm->flow_id_start); |
| |
| vxm->bm_ip4_bypass_enabled_by_sw_if = 0; |
| vxm->bm_ip6_bypass_enabled_by_sw_if = 0; |
| |
| /* initialize the ip6 hash */ |
| clib_bihash_init_16_8 (&vxm->vxlan4_tunnel_by_key, "vxlan4", |
| VXLAN_HASH_NUM_BUCKETS, VXLAN_HASH_MEMORY_SIZE); |
| clib_bihash_init_24_8 (&vxm->vxlan6_tunnel_by_key, "vxlan6", |
| VXLAN_HASH_NUM_BUCKETS, VXLAN_HASH_MEMORY_SIZE); |
| vxm->vtep_table = vtep_table_create (); |
| vxm->mcast_shared = hash_create_mem (0, |
| sizeof (ip46_address_t), |
| sizeof (mcast_shared_t)); |
| |
| fib_node_register_type (FIB_NODE_TYPE_VXLAN_TUNNEL, &vxlan_vft); |
| |
| return 0; |
| } |
| |
| VLIB_INIT_FUNCTION (vxlan_init); |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |