/* * Copyright (c) 2016 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. */ /** * @file * @brief Common utility functions for LISP-GPE interfaces. * */ #include <vppinfra/error.h> #include <vppinfra/hash.h> #include <vnet/vnet.h> #include <vnet/ip/ip.h> #include <vnet/udp/udp.h> #include <vnet/ethernet/ethernet.h> #include <vnet/lisp-gpe/lisp_gpe.h> #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h> #include <vnet/lisp-gpe/lisp_gpe_tenant.h> #include <vnet/lisp-gpe/lisp_gpe_adjacency.h> #include <vnet/adj/adj.h> #include <vnet/fib/fib_table.h> #include <vnet/fib/ip4_fib.h> #include <vnet/fib/ip6_fib.h> #include <vnet/lisp-cp/lisp_cp_dpo.h> /** * @brief The VLIB node arc/edge from the interface's TX node, to the L2 * load-balanceing node. Which is where all packets go */ static uword l2_arc_to_lb; #define foreach_lisp_gpe_tx_next \ _(DROP, "error-drop") \ _(IP4_LOOKUP, "ip4-lookup") \ _(IP6_LOOKUP, "ip6-lookup") typedef enum { #define _(sym,str) LISP_GPE_TX_NEXT_##sym, foreach_lisp_gpe_tx_next #undef _ LISP_GPE_TX_N_NEXT, } lisp_gpe_tx_next_t; typedef struct { u32 tunnel_index; } lisp_gpe_tx_trace_t; u8 * format_lisp_gpe_tx_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 *); lisp_gpe_tx_trace_t *t = va_arg (*args, lisp_gpe_tx_trace_t *); s = format (s, "LISP-GPE-TX: tunnel %d", t->tunnel_index); return s; } #define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40 /** * @brief LISP-GPE interface TX (encap) function. * @node lisp_gpe_interface_tx * * The LISP-GPE interface TX (encap) function. * * Looks up the associated tunnel based on the adjacency hit in the SD FIB * and if the tunnel is multihomed it uses the flow hash to determine * sub-tunnel, and rewrite string, to be used to encapsulate the packet. * * @param[in] vm vlib_main_t corresponding to the current thread. * @param[in] node vlib_node_runtime_t data for this node. * @param[in] frame vlib_frame_t whose contents should be dispatched. * * @return number of vectors in frame. */ static uword lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; lisp_gpe_main_t *lgm = &lisp_gpe_main; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0, adj_index0, next0; const ip_adjacency_t *adj0; const dpo_id_t *dpo0; vlib_buffer_t *b0; u8 is_v4_0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); /* Fixup the checksum and len fields in the LISP tunnel encap * that was applied at the midchain node */ is_v4_0 = is_v4_packet (vlib_buffer_get_current (b0)); ip_udp_fixup_one (lgm->vlib_main, b0, is_v4_0); /* Follow the DPO on which the midchain is stacked */ adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; adj0 = adj_get (adj_index0); dpo0 = &adj0->sub_type.midchain.next_dpo; next0 = dpo0->dpoi_next_node; vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->tunnel_index = adj_index0; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_lisp_gpe_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "lisp_gpe%d", dev_instance); } /* *INDENT-OFF* */ VNET_DEVICE_CLASS (lisp_gpe_device_class) = { .name = "LISP_GPE", .format_device_name = format_lisp_gpe_name, .format_tx_trace = format_lisp_gpe_tx_trace, .tx_function = lisp_gpe_interface_tx, }; /* *INDENT-ON* */ u8 * format_lisp_gpe_header_with_length (u8 * s, va_list * args) { lisp_gpe_header_t *h = va_arg (*args, lisp_gpe_header_t *); u32 max_header_bytes = va_arg (*args, u32); u32 header_bytes; header_bytes = sizeof (h[0]); if (max_header_bytes != 0 && header_bytes > max_header_bytes) return format (s, "lisp-gpe header truncated"); s = format (s, "flags: "); #define _(n,v) if (h->flags & v) s = format (s, "%s ", #n); foreach_lisp_gpe_flag_bit; #undef _ s = format (s, "\n ver_res %d res %d next_protocol %d iid %d(%x)", h->ver_res, h->res, h->next_protocol, clib_net_to_host_u32 (h->iid << 8), clib_net_to_host_u32 (h->iid << 8)); return s; } /* *INDENT-OFF* */ VNET_HW_INTERFACE_CLASS (lisp_gpe_hw_class) = { .name = "LISP_GPE", .format_header = format_lisp_gpe_header_with_length, .build_rewrite = lisp_gpe_build_rewrite, .update_adjacency = lisp_gpe_update_adjacency, }; /* *INDENT-ON* */ typedef struct { u32 dpo_index; } l2_lisp_gpe_tx_trace_t; static u8 * format_l2_lisp_gpe_tx_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 *); l2_lisp_gpe_tx_trace_t *t = va_arg (*args, l2_lisp_gpe_tx_trace_t *); s = format (s, "L2-LISP-GPE-TX: load-balance %d", t->dpo_index); return s; } /** * @brief LISP-GPE interface TX (encap) function for L2 overlays. * @node l2_lisp_gpe_interface_tx * * The L2 LISP-GPE interface TX (encap) function. * * Uses bridge domain index, source and destination ethernet addresses to * lookup tunnel. If the tunnel is multihomed a flow has is used to determine * the sub-tunnel and therefore the rewrite string to be used to encapsulate * the packets. * * @param[in] vm vlib_main_t corresponding to the current thread. * @param[in] node vlib_node_runtime_t data for this node. * @param[in] frame vlib_frame_t whose contents should be dispatched. * * @return number of vectors in frame. */ static uword l2_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; lisp_gpe_main_t *lgm = &lisp_gpe_main; u32 thread_index = vm->thread_index; vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { vlib_buffer_t *b0; u32 bi0, lbi0; ethernet_header_t *e0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); e0 = vlib_buffer_get_current (b0); vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_MAC; /* lookup dst + src mac */ lbi0 = lisp_l2_fib_lookup (lgm, vnet_buffer (b0)->l2.bd_index, e0->src_address, e0->dst_address); vnet_buffer (b0)->ip.adj_index[VLIB_TX] = lbi0; vlib_increment_combined_counter (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b0)); if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { l2_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->dpo_index = lbi0; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, l2_arc_to_lb); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_l2_lisp_gpe_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "l2_lisp_gpe%d", dev_instance); } /* *INDENT-OFF* */ VNET_DEVICE_CLASS (l2_lisp_gpe_device_class,static) = { .name = "L2_LISP_GPE", .format_device_name = format_l2_lisp_gpe_name, .format_tx_trace = format_l2_lisp_gpe_tx_trace, .tx_function = l2_lisp_gpe_interface_tx, }; /* *INDENT-ON* */ typedef struct { u32 dpo_index; } nsh_lisp_gpe_tx_trace_t; u8 * format_nsh_lisp_gpe_tx_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 *); nsh_lisp_gpe_tx_trace_t *t = va_arg (*args, nsh_lisp_gpe_tx_trace_t *); s = format (s, "NSH-GPE-TX: tunnel %d", t->dpo_index); return s; } /** * @brief LISP-GPE interface TX for NSH overlays. * @node nsh_lisp_gpe_interface_tx * * The NSH LISP-GPE interface TX function. * * @param[in] vm vlib_main_t corresponding to the current thread. * @param[in] node vlib_node_runtime_t data for this node. * @param[in] frame vlib_frame_t whose contents should be dispatched. * * @return number of vectors in frame. */ static uword nsh_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; lisp_gpe_main_t *lgm = &lisp_gpe_main; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { vlib_buffer_t *b0; u32 bi0; u32 *nsh0, next0; const dpo_id_t *dpo0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); nsh0 = vlib_buffer_get_current (b0); vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_LCAF; /* lookup SPI + SI (second word of the NSH header). * NB: Load balancing was done by the control plane */ dpo0 = lisp_nsh_fib_lookup (lgm, nsh0[1]); next0 = dpo0->dpoi_next_node; vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { nsh_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->dpo_index = dpo0->dpoi_index; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_nsh_lisp_gpe_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "nsh_lisp_gpe%d", dev_instance); } /* *INDENT-OFF* */ VNET_DEVICE_CLASS (nsh_lisp_gpe_device_class,static) = { .name = "NSH_LISP_GPE", .format_device_name = format_nsh_lisp_gpe_name, .format_tx_trace = format_nsh_lisp_gpe_tx_trace, .tx_function = nsh_lisp_gpe_interface_tx, }; /* *INDENT-ON* */ static vnet_hw_interface_t * lisp_gpe_create_iface (lisp_gpe_main_t * lgm, u32 vni, u32 dp_table, vnet_device_class_t * dev_class, tunnel_lookup_t * tuns) { u32 flen; u32 hw_if_index = ~0; u8 *new_name; vnet_hw_interface_t *hi; vnet_main_t *vnm = lgm->vnet_main; /* create hw lisp_gpeX iface if needed, otherwise reuse existing */ flen = vec_len (lgm->free_tunnel_hw_if_indices); if (flen > 0) { hw_if_index = lgm->free_tunnel_hw_if_indices[flen - 1]; _vec_len (lgm->free_tunnel_hw_if_indices) -= 1; hi = vnet_get_hw_interface (vnm, hw_if_index); /* rename interface */ new_name = format (0, "%U", dev_class->format_device_name, vni); vec_add1 (new_name, 0); vnet_rename_interface (vnm, hw_if_index, (char *) new_name); vec_free (new_name); /* clear old stats of freed interface before reuse */ vnet_interface_main_t *im = &vnm->interface_main; vnet_interface_counter_lock (im); vlib_zero_combined_counter (&im->combined_sw_if_counters [VNET_INTERFACE_COUNTER_TX], hi->sw_if_index); vlib_zero_combined_counter (&im->combined_sw_if_counters [VNET_INTERFACE_COUNTER_RX], hi->sw_if_index); vlib_zero_simple_counter (&im->sw_if_counters [VNET_INTERFACE_COUNTER_DROP], hi->sw_if_index); vnet_interface_counter_unlock (im); } else { hw_if_index = vnet_register_interface (vnm, dev_class->index, vni, lisp_gpe_hw_class.index, 0); hi = vnet_get_hw_interface (vnm, hw_if_index); } hash_set (tuns->hw_if_index_by_dp_table, dp_table, hw_if_index); /* set tunnel termination: post decap, packets are tagged as having been * originated by lisp-gpe interface */ hash_set (tuns->sw_if_index_by_vni, vni, hi->sw_if_index); hash_set (tuns->vni_by_sw_if_index, hi->sw_if_index, vni); return hi; } static void lisp_gpe_remove_iface (lisp_gpe_main_t * lgm, u32 hi_index, u32 dp_table, tunnel_lookup_t * tuns) { vnet_main_t *vnm = lgm->vnet_main; vnet_hw_interface_t *hi; uword *vnip; hi = vnet_get_hw_interface (vnm, hi_index); /* disable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0 /* down */ ); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, 0 /* down */ ); hash_unset (tuns->hw_if_index_by_dp_table, dp_table); vec_add1 (lgm->free_tunnel_hw_if_indices, hi->hw_if_index); /* clean tunnel termination and vni to sw_if_index binding */ vnip = hash_get (tuns->vni_by_sw_if_index, hi->sw_if_index); if (0 == vnip) { clib_warning ("No vni associated to interface %d", hi->sw_if_index); return; } hash_unset (tuns->sw_if_index_by_vni, vnip[0]); hash_unset (tuns->vni_by_sw_if_index, hi->sw_if_index); } static void lisp_gpe_iface_set_table (u32 sw_if_index, u32 table_id) { fib_node_index_t fib_index; fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, table_id, FIB_SOURCE_LISP); vec_validate (ip4_main.fib_index_by_sw_if_index, sw_if_index); ip4_main.fib_index_by_sw_if_index[sw_if_index] = fib_index; ip4_sw_interface_enable_disable (sw_if_index, 1); fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, table_id, FIB_SOURCE_LISP); vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index); ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index; ip6_sw_interface_enable_disable (sw_if_index, 1); } static void lisp_gpe_tenant_del_default_routes (u32 table_id) { fib_protocol_t proto; FOR_EACH_FIB_IP_PROTOCOL (proto) { fib_prefix_t prefix = { .fp_proto = proto, }; u32 fib_index; fib_index = fib_table_find (prefix.fp_proto, table_id); fib_table_entry_special_remove (fib_index, &prefix, FIB_SOURCE_LISP); fib_table_unlock (fib_index, prefix.fp_proto, FIB_SOURCE_LISP); } } static void lisp_gpe_tenant_add_default_routes (u32 table_id) { fib_protocol_t proto; FOR_EACH_FIB_IP_PROTOCOL (proto) { fib_prefix_t prefix = { .fp_proto = proto, }; u32 fib_index; /* * Add a deafult route that results in a control plane punt DPO */ fib_index = fib_table_find_or_create_and_lock (prefix.fp_proto, table_id, FIB_SOURCE_LISP); fib_table_entry_special_dpo_add (fib_index, &prefix, FIB_SOURCE_LISP, FIB_ENTRY_FLAG_EXCLUSIVE, lisp_cp_dpo_get (fib_proto_to_dpo (proto))); } } /** * @brief Add/del LISP-GPE L3 interface. * * Creates LISP-GPE interface, sets ingress arcs from lisp_gpeX_lookup, * installs default routes that attract all traffic with no more specific * routes to lgpe-ipx-lookup, set egress arcs to ipx-lookup, sets * the interface in the right vrf and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id, u8 with_default_routes) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id); if (hip) { clib_warning ("vrf %d already mapped to a vni", table_id); return ~0; } si = hash_get (l3_ifaces->sw_if_index_by_vni, vni); if (si) { clib_warning ("Interface for vni %d already exists", vni); } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, vni, table_id, &lisp_gpe_device_class, l3_ifaces); /* insert default routes that point to lisp-cp lookup */ lisp_gpe_iface_set_table (hi->sw_if_index, table_id); if (with_default_routes) lisp_gpe_tenant_add_default_routes (table_id); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); return (hi->sw_if_index); } void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces; vnet_hw_interface_t *hi; uword *hip; hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id); if (hip == 0) { clib_warning ("The interface for vrf %d doesn't exist", table_id); return; } hi = vnet_get_hw_interface (vnm, hip[0]); lisp_gpe_remove_iface (lgm, hip[0], table_id, &lgm->l3_ifaces); /* unset default routes */ ip4_sw_interface_enable_disable (hi->sw_if_index, 0); ip6_sw_interface_enable_disable (hi->sw_if_index, 0); lisp_gpe_tenant_del_default_routes (table_id); } /** * @brief Add/del LISP-GPE L2 interface. * * Creates LISP-GPE interface, sets it in L2 mode in the appropriate * bridge domain, sets egress arcs and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; u16 bd_index; if (bd_id > L2_BD_ID_MAX) { clib_warning ("bridge domain ID %d exceed 16M limit", bd_id); return ~0; } bd_index = bd_find_or_add_bd_index (&bd_main, bd_id); hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index); if (hip) { clib_warning ("bridge domain %d already mapped to a vni", bd_id); return ~0; } si = hash_get (l2_ifaces->sw_if_index_by_vni, vni); if (si) { clib_warning ("Interface for vni %d already exists", vni); return ~0; } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, vni, bd_index, &l2_lisp_gpe_device_class, &lgm->l2_ifaces); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); l2_arc_to_lb = vlib_node_add_named_next (vlib_get_main (), hi->tx_node_index, "l2-load-balance"); /* we're ready. add iface to l2 bridge domain */ set_int_l2_mode (lgm->vlib_main, vnm, MODE_L2_BRIDGE, hi->sw_if_index, bd_index, L2_BD_PORT_TYPE_NORMAL, 0, 0); return (hi->sw_if_index); } /** * @brief Add/del LISP-GPE L2 interface. * * Creates LISP-GPE interface, sets it in L2 mode in the appropriate * bridge domain, sets egress arcs and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id) { tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces; vnet_hw_interface_t *hi; u32 bd_index = bd_find_index (&bd_main, bd_id); ASSERT (bd_index != ~0); uword *hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index); if (hip == 0) { clib_warning ("The interface for bridge domain %d doesn't exist", bd_id); return; } /* Remove interface from bridge .. by enabling L3 mode */ hi = vnet_get_hw_interface (lgm->vnet_main, hip[0]); set_int_l2_mode (lgm->vlib_main, lgm->vnet_main, MODE_L3, hi->sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0); lisp_gpe_remove_iface (lgm, hip[0], bd_index, &lgm->l2_ifaces); } /** * @brief Add LISP-GPE NSH interface. * * Creates LISP-GPE interface, sets it in L3 mode. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return sw_if_index. */ u32 vnet_lisp_gpe_add_nsh_iface (lisp_gpe_main_t * lgm) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0); if (hip) { clib_warning ("NSH interface 0 already exists"); return ~0; } si = hash_get (nsh_ifaces->sw_if_index_by_vni, 0); if (si) { clib_warning ("NSH interface already exists"); return ~0; } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, 0, 0, &nsh_lisp_gpe_device_class, &lgm->nsh_ifaces); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); return (hi->sw_if_index); } /** * @brief Del LISP-GPE NSH interface. * */ void vnet_lisp_gpe_del_nsh_iface (lisp_gpe_main_t * lgm) { tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces; uword *hip; hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0); if (hip == 0) { clib_warning ("The NSH 0 interface doesn't exist"); return; } lisp_gpe_remove_iface (lgm, hip[0], 0, &lgm->nsh_ifaces); } static clib_error_t * lisp_gpe_add_del_iface_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; u32 table_id, vni, bd_id; u8 vni_is_set = 0, vrf_is_set = 0, bd_index_is_set = 0; u8 nsh_iface = 0; clib_error_t *error = NULL; if (vnet_lisp_gpe_enable_disable_status () == 0) { return clib_error_return (0, "LISP is disabled"); } /* 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, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "vrf %d", &table_id)) { vrf_is_set = 1; } else if (unformat (line_input, "vni %d", &vni)) { vni_is_set = 1; } else if (unformat (line_input, "bd %d", &bd_id)) { bd_index_is_set = 1; } else if (unformat (line_input, "nsh")) { nsh_iface = 1; } else { error = clib_error_return (0, "parse error: '%U'", format_unformat_error, line_input); goto done; } } if (nsh_iface) { if (is_add) { if (~0 == vnet_lisp_gpe_add_nsh_iface (&lisp_gpe_main)) { error = clib_error_return (0, "NSH interface not created"); goto done; } } else { vnet_lisp_gpe_del_nsh_iface (&lisp_gpe_main); } goto done; } if (vrf_is_set && bd_index_is_set) { error = clib_error_return (0, "Cannot set both vrf and brdige domain index!"); goto done; } if (!vni_is_set) { error = clib_error_return (0, "vni must be set!"); goto done; } if (!vrf_is_set && !bd_index_is_set) { error = clib_error_return (0, "vrf or bridge domain index must be set!"); goto done; } if (bd_index_is_set) { if (is_add) { if (~0 == lisp_gpe_tenant_l2_iface_add_or_lock (vni, bd_id)) { error = clib_error_return (0, "L2 interface not created"); goto done; } } else lisp_gpe_tenant_l2_iface_unlock (vni); } else { if (is_add) { if (~0 == lisp_gpe_tenant_l3_iface_add_or_lock (vni, table_id, 1 /* with_default_route */ )) { error = clib_error_return (0, "L3 interface not created"); goto done; } } else lisp_gpe_tenant_l3_iface_unlock (vni); } done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (add_del_lisp_gpe_iface_command, static) = { .path = "gpe iface", .short_help = "gpe iface add/del vni <vni> vrf <vrf>", .function = lisp_gpe_add_del_iface_command_fn, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */