+++ /dev/null
-/*
- * 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:
- */
Code Review / vpp.git / blobdiff