diff options
author | Damjan Marion <damarion@cisco.com> | 2016-12-19 23:05:39 +0100 |
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committer | Damjan Marion <damarion@cisco.com> | 2016-12-28 12:25:14 +0100 |
commit | 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch) | |
tree | 5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /vnet/vnet/vxlan/vxlan.c | |
parent | 696f1adec0df3b8f161862566dd9c86174302658 (diff) |
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'vnet/vnet/vxlan/vxlan.c')
-rw-r--r-- | vnet/vnet/vxlan/vxlan.c | 899 |
1 files changed, 0 insertions, 899 deletions
diff --git a/vnet/vnet/vxlan/vxlan.c b/vnet/vnet/vxlan/vxlan.c deleted file mode 100644 index abf0182f91f..00000000000 --- a/vnet/vnet/vxlan/vxlan.c +++ /dev/null @@ -1,899 +0,0 @@ -/* - * 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/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; - -static u8 * format_decap_next (u8 * s, va_list * args) -{ - u32 next_index = va_arg (*args, u32); - - switch (next_index) - { - case VXLAN_INPUT_NEXT_DROP: - return format (s, "drop"); - case VXLAN_INPUT_NEXT_L2_INPUT: - return format (s, "l2"); - default: - 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 *); - vxlan_main_t * ngm = &vxlan_main; - - s = format (s, "[%d] src %U dst %U vni %d sw_if_index %d ", - t - ngm->tunnels, - 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; -} - -static u8 * format_vxlan_name (u8 * s, va_list * args) -{ - u32 dev_instance = va_arg (*args, u32); - return format (s, "vxlan_tunnel%d", dev_instance); -} - -static uword dummy_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - clib_warning ("you shouldn't be here, leaking buffers..."); - 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 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; -} - -VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = { - .name = "VXLAN", - .format_header = format_vxlan_header_with_length, - .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 \ -_(vni) \ -_(mcast_sw_if_index) \ -_(encap_fib_index) \ -_(decap_next_index) \ -_(src) \ -_(dst) - -static int vxlan4_rewrite (vxlan_tunnel_t * t) -{ - u8 *rw = 0; - ip4_header_t * ip0; - ip4_vxlan_header_t * h0; - int len = sizeof (*h0); - - vec_validate_aligned (rw, len-1, CLIB_CACHE_LINE_BYTES); - - h0 = (ip4_vxlan_header_t *) rw; - - /* Fixed portion of the (outer) ip4 header */ - ip0 = &h0->ip4; - ip0->ip_version_and_header_length = 0x45; - ip0->ttl = 254; - ip0->protocol = IP_PROTOCOL_UDP; - - /* we fix up the ip4 header length and checksum after-the-fact */ - 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? */ - 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 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; -} - -static uword -vtep_addr_ref(ip46_address_t *ip) -{ - if (!ip46_address_is_ip4(ip)) - return 1; /* always create */ - uword *pvtep = hash_get (vxlan_main.vtep4, ip->ip4.as_u32); - if (pvtep) - return ++pvtep[0]; - hash_set (vxlan_main.vtep4, ip->ip4.as_u32, 1); - return 1; -} - -static uword -vtep_addr_unref(ip46_address_t *ip) -{ - if (!ip46_address_is_ip4(ip)) - return 0; /* alwways destroy */ - uword *pvtep = hash_get (vxlan_main.vtep4, ip->ip4.as_u32); - ASSERT(pvtep); - if (!(--pvtep[0])) - hash_unset (vxlan_main.vtep4, ip->ip4.as_u32); - return pvtep[0]; -} - -static -mcast_remote_t * -mcast_ep_get(ip46_address_t * ip) -{ - ASSERT(ip46_address_is_multicast(ip)); - uword * ep_idx = hash_get_mem (vxlan_main.mcast_ep_by_ip, ip); - ASSERT(ep_idx); - return pool_elt_at_index(vxlan_main.mcast_eps, *ep_idx); -} - -static void -mcast_ep_add(mcast_remote_t * new_ep) -{ - mcast_remote_t * ep; - - pool_get_aligned (vxlan_main.mcast_eps, ep, CLIB_CACHE_LINE_BYTES); - *ep = *new_ep; - hash_set_mem (vxlan_main.mcast_ep_by_ip, &ep->ip, ep - vxlan_main.mcast_eps); -} - -static void -mcast_ep_remove(mcast_remote_t * ep) -{ - hash_unset_mem (vxlan_main.mcast_ep_by_ip, &ep->ip); - pool_put (vxlan_main.mcast_eps, ep); -} - -static void -ip46_multicast_ethernet_address(u8 * ethernet_address, ip46_address_t * ip) { - if (ip46_address_is_ip4(ip)) - ip4_multicast_ethernet_address(ethernet_address, &ip->ip4); - else - ip6_multicast_ethernet_address(ethernet_address, ip->ip6.as_u32[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; - uword * p; - u32 hw_if_index = ~0; - u32 sw_if_index = ~0; - int rv; - vxlan4_tunnel_key_t key4; - vxlan6_tunnel_key_t key6; - u32 is_ip6 = a->is_ip6; - - 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); - } - 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); - } - - 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 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; - - pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES); - memset (t, 0, sizeof (*t)); - - /* copy from arg structure */ -#define _(x) t->x = a->x; - foreach_copy_field; -#undef _ - - /* 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) - { - pool_put (vxm->tunnels, t); - return rv; - } - - if (!is_ip6) - hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, t - vxm->tunnels); - else - hash_set_mem (vxm->vxlan6_tunnel_by_key, t->key6, t - vxm->tunnels); - - vnet_hw_interface_t * hi; - if (vec_len (vxm->free_vxlan_tunnel_hw_if_indices) > 0) - { - vnet_interface_main_t * im = &vnm->interface_main; - hw_if_index = vxm->free_vxlan_tunnel_hw_if_indices - [vec_len (vxm->free_vxlan_tunnel_hw_if_indices)-1]; - _vec_len (vxm->free_vxlan_tunnel_hw_if_indices) -= 1; - - hi = vnet_get_hw_interface (vnm, hw_if_index); - hi->dev_instance = t - vxm->tunnels; - hi->hw_instance = hi->dev_instance; - - /* clear old stats of freed tunnel before reuse */ - sw_if_index = hi->sw_if_index; - vnet_interface_counter_lock(im); - vlib_zero_combined_counter - (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX], sw_if_index); - vlib_zero_combined_counter - (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX], sw_if_index); - vlib_zero_simple_counter - (&im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP], sw_if_index); - vnet_interface_counter_unlock(im); - } - else - { - hw_if_index = vnet_register_interface - (vnm, vxlan_device_class.index, t - vxm->tunnels, - vxlan_hw_class.index, t - vxm->tunnels); - hi = vnet_get_hw_interface (vnm, hw_if_index); - } - - t->hw_if_index = hw_if_index; - t->sw_if_index = sw_if_index = hi->sw_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; - - /* 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); - 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 - */ - vtep_addr_ref(&t->src); - 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 - { - /* 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 = (is_ip6) ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4; - dpo_id_t dpo = DPO_INVALID; - dpo_proto_t dproto = fib_proto_to_dpo(fp); - - if (vtep_addr_ref(&t->dst) == 1) - { - u8 mcast_mac[6]; - - ip46_multicast_ethernet_address(mcast_mac, &t->dst); - receive_dpo_add_or_lock(dproto, ~0, NULL, &dpo); - mcast_remote_t new_ep = { - .ip = t->dst, - .mcast_adj_index = adj_rewrite_add_and_lock - (fp, fib_proto_to_link(fp), a->mcast_sw_if_index, mcast_mac), - /* Add VRF local mcast adj. */ - .fib_entry_index = fib_table_entry_special_dpo_add - (t->encap_fib_index, &tun_dst_pfx, - FIB_SOURCE_SPECIAL, FIB_ENTRY_FLAG_NONE, &dpo) - }; - mcast_ep_add(&new_ep); - dpo_reset(&dpo); - } - /* Stack shared mcast dst mac addr rewrite on encap */ - dpo_set (&dpo, DPO_ADJACENCY, dproto, - mcast_ep_get(&t->dst)->mcast_adj_index); - dpo_stack_from_node (encap_index, &t->next_dpo, &dpo); - dpo_reset (&dpo); - flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER; - } - - /* 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) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - t = pool_elt_at_index (vxm->tunnels, p[0]); - - vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */); - /* make sure tunnel is removed from l2 bd or xconnect */ - set_int_l2_mode(vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0, 0, 0, 0); - vec_add1 (vxm->free_vxlan_tunnel_hw_if_indices, t->hw_if_index); - - vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0; - - if (!is_ip6) - hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64); - else - { - hash_unset_mem (vxm->vxlan6_tunnel_by_key, t->key6); - clib_mem_free (t->key6); - } - - if (!ip46_address_is_multicast(&t->dst)) - { - vtep_addr_unref(&a->src); - fib_entry_child_remove(t->fib_entry_index, t->sibling_index); - fib_table_entry_delete_index(t->fib_entry_index, FIB_SOURCE_RR); - } - else if (vtep_addr_unref(&t->dst) == 0) - { - mcast_remote_t* ep = mcast_ep_get(&t->dst); - adj_unlock(ep->mcast_adj_index); - fib_table_entry_delete_index(ep->fib_entry_index, FIB_SOURCE_SPECIAL); - mcast_ep_remove(ep); - } - - fib_node_deinit(&t->node); - vec_free (t->rewrite); - pool_put (vxm->tunnels, t); - } - - if (sw_if_indexp) - *sw_if_indexp = sw_if_index; - - return 0; -} - -static u32 fib4_index_from_fib_id (u32 fib_id) -{ - ip4_main_t * im = &ip4_main; - uword * p; - - p = hash_get (im->fib_index_by_table_id, fib_id); - if (!p) - return ~0; - - 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, "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 , 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 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; - } - 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_ip6_address, &src.ip6)) - { - src_set = 1; - ipv6_set = 1; - } - else if (unformat (line_input, "dst %U", - 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)) - { - 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, ipv4_set)) - ; - else if (unformat (line_input, "vni %d", &vni)) - { - if (vni >> 24) - return clib_error_return (0, "vni %d out of range", vni); - } - else - return clib_error_return (0, "parse error: '%U'", - format_unformat_error, line_input); - } - - unformat_free (line_input); - - 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"); - - 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, &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..."); - - 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 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>" - " [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; - - if (pool_elts (vxm->tunnels) == 0) - vlib_cli_output (vm, "No vxlan tunnels configured..."); - - pool_foreach (t, vxm->tunnels, - ({ - vlib_cli_output (vm, "%U", format_vxlan_tunnel, t); - })); - - 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; - - vxm->vnet_main = vnet_get_main(); - vxm->vlib_main = vm; - - /* initialize the ip6 hash */ - vxm->vxlan6_tunnel_by_key = hash_create_mem(0, - sizeof(vxlan6_tunnel_key_t), - sizeof(uword)); - vxm->mcast_ep_by_ip = hash_create_mem(0, - sizeof(ip46_address_t), - sizeof(uword)); - - udp_register_dst_port (vm, UDP_DST_PORT_vxlan, - 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); |