diff options
author | 2020-09-14 07:41:48 +0000 | |
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committer | 2021-11-23 13:03:36 +0000 | |
commit | 3be9164f80ebb1929488bbe2ee4da1d35f42c1a2 (patch) | |
tree | 3fdd1b7cefd596a9fb3d8cef171985b82405d6e4 /src/vnet/vxlan-gbp/vxlan_gbp.c | |
parent | 0a7551bef872363bd3a25129bdc91dbf2a3b1ee2 (diff) |
misc: deprecate gbp and its dependents
Type: improvement
Signed-off-by: Neale Ranns <nranns@cisco.com>
Signed-off-by: BenoƮt Ganne <bganne@cisco.com>
Change-Id: I2f30a4f04fd9a8635ce2d259b5fd5b0c85cee8c3
Diffstat (limited to 'src/vnet/vxlan-gbp/vxlan_gbp.c')
-rw-r--r-- | src/vnet/vxlan-gbp/vxlan_gbp.c | 1193 |
1 files changed, 0 insertions, 1193 deletions
diff --git a/src/vnet/vxlan-gbp/vxlan_gbp.c b/src/vnet/vxlan-gbp/vxlan_gbp.c deleted file mode 100644 index eb685b8a40c..00000000000 --- a/src/vnet/vxlan-gbp/vxlan_gbp.c +++ /dev/null @@ -1,1193 +0,0 @@ -/* - * Copyright (c) 2018 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-gbp/vxlan_gbp.h> -#include <vnet/ip/format.h> -#include <vnet/ip/punt.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 <vlib/vlib.h> - -/** - * @file - * @brief VXLAN GBP. - * - * VXLAN GBP provides the features of vxlan and carry group policy id. - */ -static vlib_punt_hdl_t punt_hdl; - -vxlan_gbp_main_t vxlan_gbp_main; - -u8 * -format_vxlan_gbp_tunnel_mode (u8 * s, va_list * args) -{ - vxlan_gbp_tunnel_mode_t mode = va_arg (*args, vxlan_gbp_tunnel_mode_t); - - switch (mode) - { - case VXLAN_GBP_TUNNEL_MODE_L2: - s = format (s, "L2"); - break; - case VXLAN_GBP_TUNNEL_MODE_L3: - s = format (s, "L3"); - break; - } - return (s); -} - -u8 * -format_vxlan_gbp_tunnel (u8 * s, va_list * args) -{ - vxlan_gbp_tunnel_t *t = va_arg (*args, vxlan_gbp_tunnel_t *); - - s = format (s, - "[%d] instance %d src %U dst %U vni %d fib-idx %d" - " sw-if-idx %d mode %U ", - 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, - format_vxlan_gbp_tunnel_mode, t->mode); - - s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index); - - if (PREDICT_FALSE (ip46_address_is_multicast (&t->dst))) - s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index); - - return s; -} - -static u8 * -format_vxlan_gbp_name (u8 * s, va_list * args) -{ - u32 dev_instance = va_arg (*args, u32); - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - vxlan_gbp_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_gbp_tunnel%d", t->user_instance); -} - -static clib_error_t * -vxlan_gbp_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_gbp_device_class, static) = { - .name = "VXLAN-GBP", - .format_device_name = format_vxlan_gbp_name, - .format_tx_trace = format_vxlan_gbp_encap_trace, - .admin_up_down_function = vxlan_gbp_interface_admin_up_down, -}; -/* *INDENT-ON* */ - -static u8 * -format_vxlan_gbp_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_gbp_hw_class) = { - .name = "VXLAN-GBP", - .format_header = format_vxlan_gbp_header_with_length, - .build_rewrite = default_build_rewrite, -}; -/* *INDENT-ON* */ - -static void -vxlan_gbp_tunnel_restack_dpo (vxlan_gbp_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_gbp 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_gbp_encap_node.index : vxlan6_gbp_encap_node.index; - dpo_stack_from_node (encap_index, &t->next_dpo, &dpo); - dpo_reset (&dpo); -} - -static vxlan_gbp_tunnel_t * -vxlan_gbp_tunnel_from_fib_node (fib_node_t * node) -{ - ASSERT (FIB_NODE_TYPE_VXLAN_GBP_TUNNEL == node->fn_type); - return ((vxlan_gbp_tunnel_t *) (((char *) node) - - STRUCT_OFFSET_OF (vxlan_gbp_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_gbp_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx) -{ - vxlan_gbp_tunnel_restack_dpo (vxlan_gbp_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_gbp_tunnel_fib_node_get (fib_node_index_t index) -{ - vxlan_gbp_tunnel_t *t; - vxlan_gbp_main_t *vxm = &vxlan_gbp_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_gbp_tunnel_last_lock_gone (fib_node_t * node) -{ - /* - * The VXLAN GBP 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 GBP tunnels - * for participation in the FIB object graph. - */ -const static fib_node_vft_t vxlan_gbp_vft = { - .fnv_get = vxlan_gbp_tunnel_fib_node_get, - .fnv_last_lock = vxlan_gbp_tunnel_last_lock_gone, - .fnv_back_walk = vxlan_gbp_tunnel_back_walk, -}; - - -#define foreach_copy_field \ -_(vni) \ -_(mode) \ -_(mcast_sw_if_index) \ -_(encap_fib_index) \ -_(src) \ -_(dst) - -static void -vxlan_gbp_rewrite (vxlan_gbp_tunnel_t * t, bool is_ip6) -{ - union - { - ip4_vxlan_gbp_header_t h4; - ip6_vxlan_gbp_header_t h6; - } h; - int len = is_ip6 ? sizeof h.h6 : sizeof h.h4; - - udp_header_t *udp; - vxlan_gbp_header_t *vxlan_gbp; - /* 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_gbp = &h.h4.vxlan_gbp; - 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_gbp = &h.h6.vxlan_gbp; - 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 (47789); - udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp); - - /* VXLAN header */ - vxlan_gbp_set_header (vxlan_gbp, t->vni); - vnet_rewrite_set_data (*t, &h, len); -} - -static uword -vtep_addr_ref (ip46_address_t * ip) -{ - uword *vtep = ip46_address_is_ip4 (ip) ? - hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) : - hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6); - if (vtep) - return ++(*vtep); - ip46_address_is_ip4 (ip) ? - hash_set (vxlan_gbp_main.vtep4, ip->ip4.as_u32, 1) : - hash_set_mem_alloc (&vxlan_gbp_main.vtep6, &ip->ip6, 1); - return 1; -} - -static uword -vtep_addr_unref (ip46_address_t * ip) -{ - uword *vtep = ip46_address_is_ip4 (ip) ? - hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) : - hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6); - ALWAYS_ASSERT (vtep); - if (--(*vtep) != 0) - return *vtep; - ip46_address_is_ip4 (ip) ? - hash_unset (vxlan_gbp_main.vtep4, ip->ip4.as_u32) : - hash_unset_mem_free (&vxlan_gbp_main.vtep6, &ip->ip6); - return 0; -} - -/* *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_gbp_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_gbp_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_GBP); - - hash_unset_mem_free (&vxlan_gbp_main.mcast_shared, dst); -} - -inline void -vxlan_gbp_register_udp_ports (void) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - - if (vxm->udp_ports_registered == 0) - { - udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp, - vxlan4_gbp_input_node.index, /* is_ip4 */ 1); - udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp, - vxlan6_gbp_input_node.index, /* is_ip4 */ 0); - } - /* - * Counts the number of vxlan_gbp tunnels - */ - vxm->udp_ports_registered += 1; -} - -inline void -vxlan_gbp_unregister_udp_ports (void) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - - ASSERT (vxm->udp_ports_registered != 0); - - if (vxm->udp_ports_registered == 1) - { - udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp, - /* is_ip4 */ 1); - udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp, - /* is_ip4 */ 0); - } - - vxm->udp_ports_registered -= 1; -} - -int vnet_vxlan_gbp_tunnel_add_del - (vnet_vxlan_gbp_tunnel_add_del_args_t * a, u32 * sw_if_indexp) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - vxlan_gbp_tunnel_t *t = 0; - vnet_main_t *vnm = vxm->vnet_main; - u64 *p; - u32 sw_if_index = ~0; - vxlan4_gbp_tunnel_key_t key4; - vxlan6_gbp_tunnel_key_t key6; - u32 is_ip6 = a->is_ip6; - - int not_found; - if (!is_ip6) - { - 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_gbp_tunnel_by_key, - &key4); - p = &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_gbp_tunnel_by_key, - &key6); - p = &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) - { - t = pool_elt_at_index (vxm->tunnels, *p); - *sw_if_indexp = t->sw_if_index; - return VNET_API_ERROR_TUNNEL_EXIST; - } - 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_gbp_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 */ - - /* copy the key */ - int add_failed; - if (is_ip6) - { - key6.value = (u64) dev_instance; - add_failed = - clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6, - 1 /*add */ ); - } - else - { - key4.value = (u64) dev_instance; - add_failed = - clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4, - 1 /*add */ ); - } - - if (add_failed) - { - pool_put (vxm->tunnels, t); - return VNET_API_ERROR_INVALID_REGISTRATION; - } - - vxlan_gbp_register_udp_ports (); - - t->hw_if_index = vnet_register_interface - (vnm, vxlan_gbp_device_class.index, dev_instance, - vxlan_gbp_hw_class.index, dev_instance); - vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, t->hw_if_index); - - /* Set vxlan_gbp tunnel output node */ - u32 encap_index = !is_ip6 ? - vxlan4_gbp_encap_node.index : vxlan6_gbp_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; - - if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode) - { - ip4_sw_interface_enable_disable (t->sw_if_index, 1); - ip6_sw_interface_enable_disable (t->sw_if_index, 1); - } - - 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_GBP_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 (&t->src); - t->fib_entry_index = fib_entry_track (t->encap_fib_index, - &tun_dst_pfx, - FIB_NODE_TYPE_VXLAN_GBP_TUNNEL, - dev_instance, - &t->sibling_index); - vxlan_gbp_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 (&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 = 0, - .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_GBP, - MFIB_ENTRY_FLAG_NONE, &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_GBP, - MFIB_ENTRY_FLAG_NONE, &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 = p[0]; - 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 */ ); - - if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode) - { - ip4_sw_interface_enable_disable (t->sw_if_index, 0); - ip6_sw_interface_enable_disable (t->sw_if_index, 0); - } - - vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0; - - if (!is_ip6) - clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4, - 0 /*del */ ); - else - clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6, - 0 /*del */ ); - - if (!ip46_address_is_multicast (&t->dst)) - { - vtep_addr_unref (&t->src); - fib_entry_untrack (t->fib_entry_index, t->sibling_index); - } - else if (vtep_addr_unref (&t->dst) == 0) - { - mcast_shared_remove (&t->dst); - } - - vxlan_gbp_unregister_udp_ports (); - 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; - - return 0; -} - -int -vnet_vxlan_gbp_tunnel_del (u32 sw_if_index) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - vxlan_gbp_tunnel_t *t = 0; - u32 ti; - - if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index)) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - ti = vxm->tunnel_index_by_sw_if_index[sw_if_index]; - if (~0 != ti) - { - t = pool_elt_at_index (vxm->tunnels, ti); - - vnet_vxlan_gbp_tunnel_add_del_args_t args = { - .is_add = 0, - .is_ip6 = !ip46_address_is_ip4 (&t->src), - .vni = t->vni, - .src = t->src, - .dst = t->dst, - .instance = ~0, - }; - - return (vnet_vxlan_gbp_tunnel_add_del (&args, NULL)); - } - - return VNET_API_ERROR_NO_SUCH_ENTRY; -} - -static uword -get_decap_next_for_node (u32 node_index, u32 ipv4_set) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - vlib_main_t *vm = vxm->vlib_main; - uword input_node = (ipv4_set) ? vxlan4_gbp_input_node.index : - vxlan6_gbp_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_gbp_main_t *vxm = &vxlan_gbp_main; - vlib_main_t *vm = vxm->vlib_main; - u32 node_index; - u32 tmp; - - if (unformat (input, "l2")) - *result = VXLAN_GBP_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_gbp_tunnel_add_del_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; - vxlan_gbp_tunnel_mode_t mode = VXLAN_GBP_TUNNEL_MODE_L2; - 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_GBP_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_gbp_tunnel_add_del_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_gbp_tunnel_add_del (&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_gbp_tunnel_add_del 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_gbp 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_gbp_tunnel42: - * @cliexcmd{create vxlan_gbp 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_gbp_tunnel23: - * @cliexcmd{create vxlan_gbp 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_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del} - ?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (create_vxlan_gbp_tunnel_command, static) = { - .path = "create vxlan-gbp tunnel", - .short_help = - "create vxlan-gbp 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_gbp_tunnel_add_del_command_fn, -}; -/* *INDENT-ON* */ - -static clib_error_t * -show_vxlan_gbp_tunnel_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - vxlan_gbp_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-gbp tunnels configured..."); - -/* *INDENT-OFF* */ - pool_foreach (t, vxm->tunnels) - { - vlib_cli_output (vm, "%U", format_vxlan_gbp_tunnel, t); - } -/* *INDENT-ON* */ - - if (raw) - { - vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n", - format_bihash_16_8, &vxm->vxlan4_gbp_tunnel_by_key, - 1 /* verbose */ ); - vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n", - format_bihash_24_8, &vxm->vxlan6_gbp_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_gbp 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_gbp_tunnel_command, static) = { - .path = "show vxlan-gbp tunnel", - .short_help = "show vxlan-gbp tunnel [raw]", - .function = show_vxlan_gbp_tunnel_command_fn, -}; -/* *INDENT-ON* */ - - -void -vnet_int_vxlan_gbp_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable) -{ - if (is_ip6) - vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gbp-bypass", - sw_if_index, is_enable, 0, 0); - else - vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gbp-bypass", - sw_if_index, is_enable, 0, 0); -} - - -static clib_error_t * -set_ip_vxlan_gbp_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_gbp_bypass_mode (sw_if_index, is_ip6, is_enable); - -done: - unformat_free (line_input); - - return error; -} - -static clib_error_t * -set_ip4_vxlan_gbp_bypass (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - return set_ip_vxlan_gbp_bypass (0, input, cmd); -} - -/*? - * This command adds the 'ip4-vxlan-gbp-bypass' graph node for a given - * interface. By adding the IPv4 vxlan_gbp-bypass graph node to an interface, - * the node checks for and validate input vxlan_gbp packet and bypass - * ip4-lookup, ip4-local, ip4-udp-lookup nodes to speedup vxlan_gbp packet - * forwarding. This node will cause extra overhead to for non-vxlan_gbp packets - * which is kept at a minimum. - * - * @cliexpar - * @parblock - * Example of graph node before ip4-vxlan_gbp-bypass is enabled: - * @cliexstart{show vlib graph ip4-vxlan_gbp-bypass} - * Name Next Previous - * ip4-vxlan-gbp-bypass error-drop [0] - * vxlan4-gbp-input [1] - * ip4-lookup [2] - * @cliexend - * - * Example of how to enable ip4-vxlan-gbp-bypass on an interface: - * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0} - * - * Example of graph node after ip4-vxlan-gbp-bypass is enabled: - * @cliexstart{show vlib graph ip4-vxlan-gbp-bypass} - * Name Next Previous - * ip4-vxlan-gbp-bypass error-drop [0] ip4-input - * vxlan4-gbp-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-gbp-bypass - * ip4-lookup - * ... - * @cliexend - * - * Example of how to disable ip4-vxlan-gbp-bypass on an interface: - * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (set_interface_ip_vxlan_gbp_bypass_command, static) = { - .path = "set interface ip vxlan-gbp-bypass", - .function = set_ip4_vxlan_gbp_bypass, - .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]", -}; -/* *INDENT-ON* */ - -static clib_error_t * -set_ip6_vxlan_gbp_bypass (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - return set_ip_vxlan_gbp_bypass (1, input, cmd); -} - -/*? - * This command adds the 'ip6-vxlan-gbp-bypass' graph node for a given - * interface. By adding the IPv6 vxlan-gbp-bypass graph node to an interface, - * the node checks for and validate input vxlan_gbp packet and bypass - * ip6-lookup, ip6-local, ip6-udp-lookup nodes to speedup vxlan_gbp 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-gbp-bypass is enabled: - * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass} - * Name Next Previous - * ip6-vxlan-gbp-bypass error-drop [0] - * vxlan6-gbp-input [1] - * ip6-lookup [2] - * @cliexend - * - * Example of how to enable ip6-vxlan-gbp-bypass on an interface: - * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0} - * - * Example of graph node after ip6-vxlan-gbp-bypass is enabled: - * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass} - * Name Next Previous - * ip6-vxlan-gbp-bypass error-drop [0] ip6-input - * vxlan6-gbp-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-gbp-bypass - * ip6-lookup - * ... - * @cliexend - * - * Example of how to disable ip6-vxlan-gbp-bypass on an interface: - * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gbp_bypass_command, static) = { - .path = "set interface ip6 vxlan-gbp-bypass", - .function = set_ip6_vxlan_gbp_bypass, - .short_help = "set interface ip6 vxlan-gbp-bypass <interface> [del]", -}; -/* *INDENT-ON* */ - -#define VXLAN_GBP_HASH_NUM_BUCKETS (2 * 1024) -#define VXLAN_GBP_HASH_MEMORY_SIZE (1 << 20) - -clib_error_t * -vxlan_gbp_init (vlib_main_t * vm) -{ - vxlan_gbp_main_t *vxm = &vxlan_gbp_main; - - vxm->vnet_main = vnet_get_main (); - vxm->vlib_main = vm; - - /* initialize the ip6 hash */ - clib_bihash_init_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, "vxlan4-gbp", - VXLAN_GBP_HASH_NUM_BUCKETS, - VXLAN_GBP_HASH_MEMORY_SIZE); - clib_bihash_init_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, "vxlan6-gbp", - VXLAN_GBP_HASH_NUM_BUCKETS, - VXLAN_GBP_HASH_MEMORY_SIZE); - vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword)); - vxm->mcast_shared = hash_create_mem (0, - sizeof (ip46_address_t), - sizeof (mcast_shared_t)); - - fib_node_register_type (FIB_NODE_TYPE_VXLAN_GBP_TUNNEL, &vxlan_gbp_vft); - - punt_hdl = vlib_punt_client_register ("vxlan-gbp"); - - vlib_punt_reason_alloc (punt_hdl, "VXLAN-GBP-no-such-v4-tunnel", NULL, NULL, - &vxm->punt_no_such_tunnel[FIB_PROTOCOL_IP4], - VNET_PUNT_REASON_F_IP4_PACKET, - format_vnet_punt_reason_flags); - vlib_punt_reason_alloc (punt_hdl, "VXLAN-GBP-no-such-v6-tunnel", NULL, NULL, - &vxm->punt_no_such_tunnel[FIB_PROTOCOL_IP6], - VNET_PUNT_REASON_F_IP6_PACKET, - format_vnet_punt_reason_flags); - - return (0); -} - -/* *INDENT-OFF* */ -VLIB_INIT_FUNCTION (vxlan_gbp_init) = -{ - .runs_after = VLIB_INITS("punt_init"), -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |