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Diffstat (limited to 'src/vnet/geneve/geneve.c')
| -rw-r--r-- | src/vnet/geneve/geneve.c | 1122 |
1 files changed, 0 insertions, 1122 deletions
diff --git a/src/vnet/geneve/geneve.c b/src/vnet/geneve/geneve.c deleted file mode 100644 index e16616b69ea..00000000000 --- a/src/vnet/geneve/geneve.c +++ /dev/null @@ -1,1122 +0,0 @@ -/* - * Copyright (c) 2017 SUSE LLC. - * 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/geneve/geneve.h> -#include <vnet/ip/format.h> -#include <vnet/fib/fib_entry.h> -#include <vnet/fib/fib_table.h> -#include <vnet/fib/fib_entry_track.h> -#include <vnet/mfib/mfib_table.h> -#include <vnet/adj/adj_mcast.h> -#include <vnet/interface.h> -#include <vlib/vlib.h> - -/** - * @file - * @brief GENEVE. - * - * GENEVE 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 GENEVE 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. - */ - - -geneve_main_t geneve_main; - -u8 * -format_geneve_encap_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - geneve_encap_trace_t *t = va_arg (*args, geneve_encap_trace_t *); - - s = format (s, "GENEVE encap to geneve_tunnel%d vni %d", - t->tunnel_index, t->vni); - return s; -} - -static u8 * -format_decap_next (u8 * s, va_list * args) -{ - u32 next_index = va_arg (*args, u32); - - switch (next_index) - { - case GENEVE_INPUT_NEXT_DROP: - return format (s, "drop"); - case GENEVE_INPUT_NEXT_L2_INPUT: - return format (s, "l2"); - default: - return format (s, "index %d", next_index); - } - return s; -} - -u8 * -format_geneve_tunnel (u8 * s, va_list * args) -{ - geneve_tunnel_t *t = va_arg (*args, geneve_tunnel_t *); - geneve_main_t *ngm = &geneve_main; - - s = format (s, "[%d] lcl %U rmt %U vni %d fib-idx %d sw-if-idx %d ", - t - ngm->tunnels, - format_ip46_address, &t->local, IP46_TYPE_ANY, - format_ip46_address, &t->remote, IP46_TYPE_ANY, - t->vni, t->encap_fib_index, t->sw_if_index); - - s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index); - s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index); - s = format (s, "l3-mode %u ", t->l3_mode); - - if (PREDICT_FALSE (ip46_address_is_multicast (&t->remote))) - s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index); - - return s; -} - -static u8 * -format_geneve_name (u8 * s, va_list * args) -{ - u32 dev_instance = va_arg (*args, u32); - return format (s, "geneve_tunnel%d", dev_instance); -} - -static clib_error_t * -geneve_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; -} - -static clib_error_t * -geneve_mac_change (vnet_hw_interface_t * hi, - const u8 * old_address, const u8 * mac_address) -{ - l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address); - return (NULL); -} - -/* *INDENT-OFF* */ -VNET_DEVICE_CLASS (geneve_device_class, static) = { - .name = "GENEVE", - .format_device_name = format_geneve_name, - .format_tx_trace = format_geneve_encap_trace, - .admin_up_down_function = geneve_interface_admin_up_down, - .mac_addr_change_function = geneve_mac_change, -}; -/* *INDENT-ON* */ - -static u8 * -format_geneve_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 (geneve_hw_class) = { - .name = "GENEVE", - .format_header = format_geneve_header_with_length, - .build_rewrite = default_build_rewrite, -}; -/* *INDENT-ON* */ - -static void -geneve_tunnel_restack_dpo (geneve_tunnel_t * t) -{ - dpo_id_t dpo = DPO_INVALID; - u32 encap_index = ip46_address_is_ip4 (&t->remote) ? - geneve4_encap_node.index : geneve6_encap_node.index; - fib_forward_chain_type_t forw_type = ip46_address_is_ip4 (&t->remote) ? - 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 geneve_tunnel_t * -geneve_tunnel_from_fib_node (fib_node_t * node) -{ - ASSERT (FIB_NODE_TYPE_GENEVE_TUNNEL == node->fn_type); - return ((geneve_tunnel_t *) (((char *) node) - - STRUCT_OFFSET_OF (geneve_tunnel_t, node))); -} - -/** - * Function definition to backwalk a FIB node - - * Here we will restack the new dpo of GENEVE DIP to encap node. - */ -static fib_node_back_walk_rc_t -geneve_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx) -{ - geneve_tunnel_restack_dpo (geneve_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 * -geneve_tunnel_fib_node_get (fib_node_index_t index) -{ - geneve_tunnel_t *t; - geneve_main_t *vxm = &geneve_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 -geneve_tunnel_last_lock_gone (fib_node_t * node) -{ - /* - * The GENEVE 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 GENEVE tunnels - * for participation in the FIB object graph. - */ -const static fib_node_vft_t geneve_vft = { - .fnv_get = geneve_tunnel_fib_node_get, - .fnv_last_lock = geneve_tunnel_last_lock_gone, - .fnv_back_walk = geneve_tunnel_back_walk, -}; - - -#define foreach_copy_field \ -_(vni) \ -_(mcast_sw_if_index) \ -_(encap_fib_index) \ -_(decap_next_index) \ -_(local) \ -_(remote) \ -_(l3_mode) - -static int -geneve_rewrite (geneve_tunnel_t * t, bool is_ip6) -{ - union - { - ip4_geneve_header_t *h4; - ip6_geneve_header_t *h6; - u8 *rw; - } r = - { - .rw = 0}; - int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4; -#if SUPPORT_OPTIONS_HEADER==1 - len += t->options_len; -#endif - - vec_validate_aligned (r.rw, len - 1, CLIB_CACHE_LINE_BYTES); - - udp_header_t *udp; - geneve_header_t *geneve; - /* Fixed portion of the (outer) ip header */ - if (!is_ip6) - { - ip4_header_t *ip = &r.h4->ip4; - udp = &r.h4->udp, geneve = &r.h4->geneve; - ip->ip_version_and_header_length = 0x45; - ip->ttl = 254; - ip->protocol = IP_PROTOCOL_UDP; - - ip->src_address = t->local.ip4; - ip->dst_address = t->remote.ip4; - - /* we fix up the ip4 header length and checksum after-the-fact */ - ip->checksum = ip4_header_checksum (ip); - } - else - { - ip6_header_t *ip = &r.h6->ip6; - udp = &r.h6->udp, geneve = &r.h6->geneve; - 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->local.ip6; - ip->dst_address = t->remote.ip6; - } - - /* UDP header, randomize local port on something, maybe? */ - udp->src_port = clib_host_to_net_u16 (5251); - udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_geneve); - - /* GENEVE header */ - vnet_set_geneve_version (geneve, GENEVE_VERSION); -#if SUPPORT_OPTIONS_HEADER==1 - vnet_set_geneve_options_len (geneve, t->options_len); -#else - vnet_set_geneve_options_len (geneve, 0); -#endif - vnet_set_geneve_oamframe_bit (geneve, 0); - vnet_set_geneve_critical_bit (geneve, 0); - vnet_set_geneve_protocol (geneve, GENEVE_ETH_PROTOCOL); - - vnet_geneve_hdr_1word_hton (geneve); - - vnet_set_geneve_vni (geneve, t->vni); - - t->rewrite = r.rw; - return (0); -} - -static bool -geneve_decap_next_is_valid (geneve_main_t * vxm, u32 is_ip6, - u32 decap_next_index) -{ - vlib_main_t *vm = vxm->vlib_main; - u32 input_idx = - (!is_ip6) ? geneve4_input_node.index : geneve6_input_node.index; - vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx); - - return decap_next_index < r->n_next_nodes; -} - -typedef union -{ - struct - { - fib_node_index_t mfib_entry_index; - adj_index_t mcast_adj_index; - }; - u64 as_u64; -} __clib_packed mcast_shared_t; - -static inline mcast_shared_t -mcast_shared_get (ip46_address_t * ip) -{ - ASSERT (ip46_address_is_multicast (ip)); - uword *p = hash_get_mem (geneve_main.mcast_shared, ip); - ALWAYS_ASSERT (p); - return (mcast_shared_t) - { - .as_u64 = *p}; -} - -static inline void -mcast_shared_add (ip46_address_t * remote, - 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 (&geneve_main.mcast_shared, remote, new_ep.as_u64); -} - -static inline void -mcast_shared_remove (ip46_address_t * remote) -{ - mcast_shared_t ep = mcast_shared_get (remote); - - adj_unlock (ep.mcast_adj_index); - mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_GENEVE); - - hash_unset_mem_free (&geneve_main.mcast_shared, remote); -} - -int vnet_geneve_add_del_tunnel - (vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp) -{ - geneve_main_t *vxm = &geneve_main; - geneve_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; - geneve4_tunnel_key_t key4; - geneve6_tunnel_key_t key6; - u32 is_ip6 = a->is_ip6; - - if (!is_ip6) - { - key4.remote = a->remote.ip4.as_u32; - key4.vni = clib_host_to_net_u32 (a->vni << GENEVE_VNI_SHIFT); - p = hash_get (vxm->geneve4_tunnel_by_key, key4.as_u64); - } - else - { - key6.remote = a->remote.ip6; - key6.vni = clib_host_to_net_u32 (a->vni << GENEVE_VNI_SHIFT); - p = hash_get_mem (vxm->geneve6_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 = GENEVE_INPUT_NEXT_L2_INPUT; - if (!geneve_decap_next_is_valid (vxm, is_ip6, a->decap_next_index)) - return VNET_API_ERROR_INVALID_DECAP_NEXT; - - pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES); - clib_memset (t, 0, sizeof (*t)); - - /* copy from arg structure */ -#define _(x) t->x = a->x; - foreach_copy_field; -#undef _ - - rv = geneve_rewrite (t, is_ip6); - if (rv) - { - pool_put (vxm->tunnels, t); - return rv; - } - - /* copy the key */ - if (is_ip6) - hash_set_mem_alloc (&vxm->geneve6_tunnel_by_key, &key6, - t - vxm->tunnels); - else - hash_set (vxm->geneve4_tunnel_by_key, key4.as_u64, t - vxm->tunnels); - - vnet_hw_interface_t *hi; - if (a->l3_mode) - { - u32 t_idx = t - vxm->tunnels; - u8 address[6] = - { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx }; - clib_error_t *error = - ethernet_register_interface (vnm, geneve_device_class.index, - t_idx, - address, &hw_if_index, 0); - if (error) - { - clib_error_report (error); - return VNET_API_ERROR_INVALID_REGISTRATION; - } - } - else - { - hw_if_index = vnet_register_interface - (vnm, geneve_device_class.index, t - vxm->tunnels, - geneve_hw_class.index, t - vxm->tunnels); - } - - hi = vnet_get_hw_interface (vnm, hw_if_index); - - /* Set geneve tunnel output node */ - u32 encap_index = !is_ip6 ? - geneve4_encap_node.index : geneve6_encap_node.index; - vnet_set_interface_output_node (vnm, hw_if_index, encap_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_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_GENEVE_TUNNEL); - fib_prefix_t tun_remote_pfx; - vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL; - - fib_prefix_from_ip46_addr (&t->remote, &tun_remote_pfx); - if (!ip46_address_is_multicast (&t->remote)) - { - /* Unicast tunnel - - * source the FIB entry for the tunnel's destination - * and become a child thereof. The tunnel will then get poked - * when the forwarding for the entry updates, and the tunnel can - * re-stack accordingly - */ - vtep_addr_ref (&vxm->vtep_table, t->encap_fib_index, &t->local); - t->fib_entry_index = fib_entry_track (t->encap_fib_index, - &tun_remote_pfx, - FIB_NODE_TYPE_GENEVE_TUNNEL, - t - vxm->tunnels, - &t->sibling_index); - geneve_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 = fib_ip_proto (is_ip6); - - if (vtep_addr_ref (&vxm->vtep_table, - t->encap_fib_index, &t->remote) == 1) - { - fib_node_index_t mfei; - adj_index_t ai; - fib_route_path_t path = { - .frp_proto = fib_proto_to_dpo (fp), - .frp_addr = zero_addr, - .frp_sw_if_index = 0xffffffff, - .frp_fib_index = ~0, - .frp_weight = 1, - .frp_flags = FIB_ROUTE_PATH_LOCAL, - .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD, - }; - const mfib_prefix_t mpfx = { - .fp_proto = fp, - .fp_len = (is_ip6 ? 128 : 32), - .fp_grp_addr = tun_remote_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_GENEVE, &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_GENEVE, &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->remote, mfei, ai); - } - - dpo_id_t dpo = DPO_INVALID; - mcast_shared_t ep = mcast_shared_get (&t->remote); - - /* Stack shared mcast remote 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; - - t = pool_elt_at_index (vxm->tunnels, p[0]); - - sw_if_index = t->sw_if_index; - vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ ); - vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, t->sw_if_index); - si->flags |= VNET_SW_INTERFACE_FLAG_HIDDEN; - - /* 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, - L2_BD_PORT_TYPE_NORMAL, 0, 0); - - if (t->l3_mode) - ethernet_delete_interface (vnm, t->hw_if_index); - else - vnet_delete_hw_interface (vnm, t->hw_if_index); - - vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0; - - if (!is_ip6) - hash_unset (vxm->geneve4_tunnel_by_key, key4.as_u64); - else - hash_unset_mem_free (&vxm->geneve6_tunnel_by_key, &key6); - - if (!ip46_address_is_multicast (&t->remote)) - { - vtep_addr_unref (&vxm->vtep_table, t->encap_fib_index, &t->local); - fib_entry_untrack (t->fib_entry_index, t->sibling_index); - } - else if (vtep_addr_unref (&vxm->vtep_table, - t->encap_fib_index, &t->remote) == 0) - { - mcast_shared_remove (&t->remote); - } - - fib_node_deinit (&t->node); - vec_free (t->rewrite); - pool_put (vxm->tunnels, t); - } - - if (sw_if_indexp) - *sw_if_indexp = sw_if_index; - - if (a->is_add) - { - /* register udp ports */ - if (!is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_geneve, 1)) - udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_geneve, - geneve4_input_node.index, 1); - if (is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_geneve6, 0)) - udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_geneve6, - geneve6_input_node.index, 0); - } - - return 0; -} - -static uword -get_decap_next_for_node (u32 node_index, u32 ipv4_set) -{ - geneve_main_t *vxm = &geneve_main; - vlib_main_t *vm = vxm->vlib_main; - uword input_node = (ipv4_set) ? geneve4_input_node.index : - geneve6_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); - geneve_main_t *vxm = &geneve_main; - vlib_main_t *vm = vxm->vlib_main; - u32 node_index; - u32 tmp; - - if (unformat (input, "l2")) - *result = GENEVE_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 * -geneve_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 local, remote; - u8 is_add = 1; - u8 local_set = 0; - u8 remote_set = 0; - u8 grp_set = 0; - u8 ipv4_set = 0; - u8 ipv6_set = 0; - u8 l3_mode = 0; - u32 encap_fib_index = 0; - u32 mcast_sw_if_index = ~0; - u32 decap_next_index = GENEVE_INPUT_NEXT_L2_INPUT; - u32 vni = 0; - u32 tmp; - int rv; - vnet_geneve_add_del_tunnel_args_t _a, *a = &_a; - u32 tunnel_sw_if_index; - clib_error_t *error = NULL; - - /* Cant "universally zero init" (={0}) due to GCC bug 53119 */ - clib_memset (&local, 0, sizeof local); - clib_memset (&remote, 0, sizeof remote); - - /* 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, "local %U", - unformat_ip4_address, &local.ip4)) - { - local_set = 1; - ipv4_set = 1; - } - else if (unformat (line_input, "remote %U", - unformat_ip4_address, &remote.ip4)) - { - remote_set = 1; - ipv4_set = 1; - } - else if (unformat (line_input, "local %U", - unformat_ip6_address, &local.ip6)) - { - local_set = 1; - ipv6_set = 1; - } - else if (unformat (line_input, "remote %U", - unformat_ip6_address, &remote.ip6)) - { - remote_set = 1; - ipv6_set = 1; - } - else if (unformat (line_input, "group %U %U", - unformat_ip4_address, &remote.ip4, - unformat_vnet_sw_interface, - vnet_get_main (), &mcast_sw_if_index)) - { - grp_set = remote_set = 1; - ipv4_set = 1; - } - else if (unformat (line_input, "group %U %U", - unformat_ip6_address, &remote.ip6, - unformat_vnet_sw_interface, - vnet_get_main (), &mcast_sw_if_index)) - { - grp_set = remote_set = 1; - ipv6_set = 1; - } - else if (unformat (line_input, "encap-vrf-id %d", &tmp)) - { - encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp); - if (encap_fib_index == ~0) - { - error = - clib_error_return (0, "nonexistent encap-vrf-id %d", tmp); - goto done; - } - } - 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) - { - error = clib_error_return (0, "vni %d out of range", vni); - goto done; - } - } - else if (unformat (line_input, "l3-mode")) - { - l3_mode = 1; - } - else - { - error = clib_error_return (0, "parse error: '%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (local_set == 0) - { - error = clib_error_return (0, "tunnel local address not specified"); - goto done; - } - - if (remote_set == 0) - { - error = clib_error_return (0, "tunnel remote address not specified"); - goto done; - } - - if (grp_set && !ip46_address_is_multicast (&remote)) - { - error = clib_error_return (0, "tunnel group address not multicast"); - goto done; - } - - if (grp_set == 0 && ip46_address_is_multicast (&remote)) - { - error = clib_error_return (0, "remote address must be unicast"); - goto done; - } - - if (grp_set && mcast_sw_if_index == ~0) - { - error = clib_error_return (0, "tunnel nonexistent multicast device"); - goto done; - } - - if (ipv4_set && ipv6_set) - { - error = clib_error_return (0, "both IPv4 and IPv6 addresses specified"); - goto done; - } - - if (ip46_address_cmp (&local, &remote) == 0) - { - error = - clib_error_return (0, "local and remote addresses are identical"); - goto done; - } - - if (decap_next_index == ~0) - { - error = clib_error_return (0, "next node not found"); - goto done; - } - - if (vni == 0) - { - error = clib_error_return (0, "vni not specified"); - goto done; - } - - clib_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_geneve_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: - error = clib_error_return (0, "tunnel already exists..."); - goto done; - - case VNET_API_ERROR_NO_SUCH_ENTRY: - error = clib_error_return (0, "tunnel does not exist..."); - goto done; - - default: - error = clib_error_return - (0, "vnet_geneve_add_del_tunnel returned %d", rv); - goto done; - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * Add or delete a GENEVE Tunnel. - * - * GENEVE 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 GENEVE 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 GENEVE - * segment. - * - * @cliexpar - * Example of how to create a GENEVE Tunnel: - * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 encap-vrf-id 7} - * Example of how to delete a GENEVE Tunnel: - * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 del} - ?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (create_geneve_tunnel_command, static) = { - .path = "create geneve tunnel", - .short_help = - "create geneve tunnel local <local-vtep-addr>" - " {remote <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>" - " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [l3-mode] [del]", - .function = geneve_add_del_tunnel_command_fn, -}; -/* *INDENT-ON* */ - -static clib_error_t * -show_geneve_tunnel_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - geneve_main_t *vxm = &geneve_main; - geneve_tunnel_t *t; - - if (pool_elts (vxm->tunnels) == 0) - vlib_cli_output (vm, "No geneve tunnels configured..."); - - pool_foreach (t, vxm->tunnels, ( - { - vlib_cli_output (vm, "%U", - format_geneve_tunnel, t); - } - )); - - return 0; -} - -/*? - * Display all the GENEVE Tunnel entries. - * - * @cliexpar - * Example of how to display the GENEVE Tunnel entries: - * @cliexstart{show geneve tunnel} - * [0] local 10.0.3.1 remote 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2 - * @cliexend - ?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_geneve_tunnel_command, static) = { - .path = "show geneve tunnel", - .short_help = "show geneve tunnel", - .function = show_geneve_tunnel_command_fn, -}; -/* *INDENT-ON* */ - - -void -vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable) -{ - if (is_ip6) - vnet_feature_enable_disable ("ip6-unicast", "ip6-geneve-bypass", - sw_if_index, is_enable, 0, 0); - else - vnet_feature_enable_disable ("ip4-unicast", "ip4-geneve-bypass", - sw_if_index, is_enable, 0, 0); -} - - -static clib_error_t * -set_ip_geneve_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_geneve_bypass_mode (sw_if_index, is_ip6, is_enable); - -done: - unformat_free (line_input); - - return error; -} - -static clib_error_t * -set_ip4_geneve_bypass (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - return set_ip_geneve_bypass (0, input, cmd); -} - -/*? - * This command adds the 'ip4-geneve-bypass' graph node for a given interface. - * By adding the IPv4 geneve-bypass graph node to an interface, the node checks - * for and validate input geneve packet and bypass ip4-lookup, ip4-local, - * ip4-udp-lookup nodes to speedup geneve packet forwarding. This node will - * cause extra overhead to for non-geneve packets which is kept at a minimum. - * - * @cliexpar - * @parblock - * Example of graph node before ip4-geneve-bypass is enabled: - * @cliexstart{show vlib graph ip4-geneve-bypass} - * Name Next Previous - * ip4-geneve-bypass error-drop [0] - * geneve4-input [1] - * ip4-lookup [2] - * @cliexend - * - * Example of how to enable ip4-geneve-bypass on an interface: - * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0} - * - * Example of graph node after ip4-geneve-bypass is enabled: - * @cliexstart{show vlib graph ip4-geneve-bypass} - * Name Next Previous - * ip4-geneve-bypass error-drop [0] ip4-input - * geneve4-input [1] ip4-input-no-checksum - * ip4-lookup [2] - * @cliexend - * - * Example of how to display the feature enabed on an interface: - * @cliexstart{show ip interface features GigabitEthernet2/0/0} - * IP feature paths configured on GigabitEthernet2/0/0... - * ... - * ipv4 unicast: - * ip4-geneve-bypass - * ip4-lookup - * ... - * @cliexend - * - * Example of how to disable ip4-geneve-bypass on an interface: - * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (set_interface_ip_geneve_bypass_command, static) = { - .path = "set interface ip geneve-bypass", - .function = set_ip4_geneve_bypass, - .short_help = "set interface ip geneve-bypass <interface> [del]", -}; -/* *INDENT-ON* */ - -static clib_error_t * -set_ip6_geneve_bypass (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - return set_ip_geneve_bypass (1, input, cmd); -} - -/*? - * This command adds the 'ip6-geneve-bypass' graph node for a given interface. - * By adding the IPv6 geneve-bypass graph node to an interface, the node checks - * for and validate input geneve packet and bypass ip6-lookup, ip6-local, - * ip6-udp-lookup nodes to speedup geneve packet forwarding. This node will - * cause extra overhead to for non-geneve packets which is kept at a minimum. - * - * @cliexpar - * @parblock - * Example of graph node before ip6-geneve-bypass is enabled: - * @cliexstart{show vlib graph ip6-geneve-bypass} - * Name Next Previous - * ip6-geneve-bypass error-drop [0] - * geneve6-input [1] - * ip6-lookup [2] - * @cliexend - * - * Example of how to enable ip6-geneve-bypass on an interface: - * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0} - * - * Example of graph node after ip6-geneve-bypass is enabled: - * @cliexstart{show vlib graph ip6-geneve-bypass} - * Name Next Previous - * ip6-geneve-bypass error-drop [0] ip6-input - * geneve6-input [1] ip4-input-no-checksum - * ip6-lookup [2] - * @cliexend - * - * Example of how to display the feature enabed on an interface: - * @cliexstart{show ip interface features GigabitEthernet2/0/0} - * IP feature paths configured on GigabitEthernet2/0/0... - * ... - * ipv6 unicast: - * ip6-geneve-bypass - * ip6-lookup - * ... - * @cliexend - * - * Example of how to disable ip6-geneve-bypass on an interface: - * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (set_interface_ip6_geneve_bypass_command, static) = { - .path = "set interface ip6 geneve-bypass", - .function = set_ip6_geneve_bypass, - .short_help = "set interface ip6 geneve-bypass <interface> [del]", -}; -/* *INDENT-ON* */ - -clib_error_t * -geneve_init (vlib_main_t * vm) -{ - geneve_main_t *vxm = &geneve_main; - - vxm->vnet_main = vnet_get_main (); - vxm->vlib_main = vm; - - /* initialize the ip6 hash */ - vxm->geneve6_tunnel_by_key = hash_create_mem (0, - sizeof (geneve6_tunnel_key_t), - sizeof (uword)); - vxm->vtep_table = vtep_table_create (); - vxm->mcast_shared = hash_create_mem (0, - sizeof (ip46_address_t), - sizeof (mcast_shared_t)); - - fib_node_register_type (FIB_NODE_TYPE_GENEVE_TUNNEL, &geneve_vft); - - return 0; -} - -VLIB_INIT_FUNCTION (geneve_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |