/* * l2_input.c : layer 2 input packet processing * * Copyright (c) 2013 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 <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/ethernet/ethernet.h> #include <vnet/ethernet/packet.h> #include <vnet/ip/ip_packet.h> #include <vnet/ip/ip4_packet.h> #include <vnet/ip/ip6_packet.h> #include <vnet/fib/fib_node.h> #include <vnet/ethernet/arp_packet.h> #include <vlib/cli.h> #include <vnet/l2/l2_input.h> #include <vnet/l2/l2_output.h> #include <vnet/l2/feat_bitmap.h> #include <vnet/l2/l2_bvi.h> #include <vnet/l2/l2_fib.h> #include <vnet/l2/l2_bd.h> #include <vppinfra/error.h> #include <vppinfra/hash.h> #include <vppinfra/cache.h> /** * @file * @brief Interface Input Mode (Layer 2 Cross-Connect or Bridge / Layer 3). * * This file contains the CLI Commands that modify the input mode of an * interface. For interfaces in a Layer 2 cross-connect, all packets * received on one interface will be transmitted to the other. For * interfaces in a bridge-domain, packets will be forwarded to other * interfaces in the same bridge-domain based on destination mac address. * For interfaces in Layer 3 mode, the packets will be routed. */ /* Feature graph node names */ static char *l2input_feat_names[] = { #define _(sym,name) name, foreach_l2input_feat #undef _ }; char ** l2input_get_feat_names (void) { return l2input_feat_names; } u8 * format_l2_input_feature_bitmap (u8 * s, va_list * args) { static char *display_names[] = { #define _(sym,name) #sym, foreach_l2input_feat #undef _ }; u32 feature_bitmap = va_arg (*args, u32); u32 verbose = va_arg (*args, u32); if (feature_bitmap == 0) { s = format (s, " none configured"); return s; } feature_bitmap &= ~L2INPUT_FEAT_DROP; /* Not a feature */ int i; for (i = L2INPUT_N_FEAT - 1; i >= 0; i--) { if (feature_bitmap & (1 << i)) { if (verbose) s = format (s, "%17s (%s)\n", display_names[i], l2input_feat_names[i]); else s = format (s, "%s ", l2input_feat_names[i]); } } return s; } u8 * format_l2_input_features (u8 * s, va_list * args) { u32 sw_if_index = va_arg (*args, u32); u32 verbose = va_arg (*args, u32); l2_input_config_t *l2_input = l2input_intf_config (sw_if_index); u32 fb = l2_input->feature_bitmap; /* intf input features are masked by bridge domain */ if (l2_input_is_bridge (l2_input)) fb &= l2_input->bd_feature_bitmap; s = format (s, "\nl2-input:\n%U", format_l2_input_feature_bitmap, fb, verbose); return (s); } u8 * format_l2_input (u8 * s, va_list * args) { u32 sw_if_index = va_arg (*args, u32); l2_input_config_t *l2_input = l2input_intf_config (sw_if_index); /* intf input features are masked by bridge domain */ if (l2_input_is_bridge (l2_input)) { bd_main_t *bdm = &bd_main; u32 bd_id = l2input_main.bd_configs[l2_input->bd_index].bd_id; s = format (s, " L2 bridge bd-id %d idx %d shg %d %s", bd_id, bd_find_index (bdm, bd_id), l2_input->shg, l2_input_is_bvi (l2_input) ? "bvi" : " "); } else if (l2_input_is_xconnect (l2_input)) s = format (s, " L2 xconnect %U", format_vnet_sw_if_index_name, vnet_get_main (), l2_input->output_sw_if_index); return (s); } clib_error_t * l2input_init (vlib_main_t * vm) { l2input_main_t *mp = &l2input_main; mp->vlib_main = vm; mp->vnet_main = vnet_get_main (); /* Get packets RX'd from L2 interfaces */ ethernet_register_l2_input (vm, l2input_node.index); /* Initialize the feature next-node indexes */ feat_bitmap_init_next_nodes (vm, l2input_node.index, L2INPUT_N_FEAT, l2input_get_feat_names (), mp->feat_next_node_index); return 0; } VLIB_INIT_FUNCTION (l2input_init); /** Get a pointer to the config for the given interface. */ l2_input_config_t * l2input_intf_config (u32 sw_if_index) { l2input_main_t *mp = &l2input_main; vec_validate (mp->configs, sw_if_index); return vec_elt_at_index (mp->configs, sw_if_index); } /** Enable (or disable) the feature in the bitmap for the given interface. */ u32 l2input_intf_bitmap_enable (u32 sw_if_index, l2input_feat_masks_t feature_bitmap, u32 enable) { l2_input_config_t *config = l2input_intf_config (sw_if_index); if (enable) config->feature_bitmap |= feature_bitmap; else config->feature_bitmap &= ~feature_bitmap; return config->feature_bitmap; } u32 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value) { l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);; bd_validate (bd_config); bd_config->feature_bitmap = (bd_config->feature_bitmap & ~feat_mask) | feat_value; return bd_config->feature_bitmap; } void l2input_interface_mac_change (u32 sw_if_index, const u8 * old_address, const u8 * new_address) { /* check if the sw_if_index passed is a BVI in a BD */ l2_input_config_t *intf_config; intf_config = l2input_intf_config (sw_if_index); if (l2_input_is_bridge (intf_config) && l2_input_is_bvi (intf_config)) { /* delete and re-add l2fib entry for the bvi interface */ l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index); l2fib_add_entry (new_address, intf_config->bd_index, sw_if_index, L2FIB_ENTRY_RESULT_FLAG_BVI | L2FIB_ENTRY_RESULT_FLAG_STATIC); } } walk_rc_t l2input_recache (u32 bd_index, u32 sw_if_index) { l2_input_config_t *input; l2_bridge_domain_t *bd; bd = bd_get (bd_index); input = l2input_intf_config (sw_if_index); input->bd_mac_age = bd->mac_age; input->bd_seq_num = bd->seq_num; input->bd_feature_bitmap = bd->feature_bitmap; return (WALK_CONTINUE); } void l2_input_seq_num_inc (u32 sw_if_index) { l2_input_config_t *input; input = vec_elt_at_index (l2input_main.configs, sw_if_index); input->seq_num++; } /** * Set the subinterface to run in l2 or l3 mode. * For L3 mode, just the sw_if_index is specified. * For bridged mode, the bd id and bvi flag are also specified. * For xconnect mode, the peer sw_if_index is also specified. * Return 0 if ok, or non-0 if there was an error. */ u32 set_int_l2_mode (vlib_main_t * vm, vnet_main_t * vnet_main, /* */ u32 mode, /* One of L2 modes or back to L3 mode */ u32 sw_if_index, /* sw interface index */ u32 bd_index, /* for bridged interface */ l2_bd_port_type_t port_type, /* port_type */ u32 shg, /* the bridged interface split horizon group */ u32 xc_sw_if_index) /* peer interface for xconnect */ { l2output_main_t *l2om = &l2output_main; vnet_main_t *vnm = vnet_get_main (); vnet_hw_interface_t *hi; l2_output_config_t *out_config; l2_input_config_t *config; l2_bridge_domain_t *bd_config; i32 l2_if_adjust = 0; vnet_device_class_t *dev_class; hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index); config = l2input_intf_config (sw_if_index); if (l2fib_main.mac_table_initialized == 0) l2fib_table_init (); if (l2_input_is_bridge (config)) { /* Interface is already in bridge mode. Undo the existing config. */ bd_config = bd_get (config->bd_index); /* remove interface from flood vector */ bd_remove_member (bd_config, sw_if_index); /* undo any BVI-related config */ if (bd_config->bvi_sw_if_index == sw_if_index) { vnet_sw_interface_t *si; bd_config->bvi_sw_if_index = ~0; config->flags &= ~L2_INPUT_FLAG_BVI; /* delete the l2fib entry for the bvi interface */ l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index); /* since this is a no longer BVI interface do not to flood to it */ si = vnet_get_sw_interface (vnm, sw_if_index); si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD; } if (bd_config->uu_fwd_sw_if_index == sw_if_index) { bd_config->uu_fwd_sw_if_index = ~0; bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD; } /* Clear MACs learned on the interface */ if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) || (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN)) l2fib_flush_int_mac (vm, sw_if_index); bd_input_walk (config->bd_index, l2input_recache, NULL); l2_if_adjust--; } else if (l2_input_is_xconnect (config)) { l2_if_adjust--; } /* Make sure vector is big enough */ vec_validate_init_empty (l2om->output_node_index_vec, sw_if_index, L2OUTPUT_NEXT_DROP); /* Initialize the l2-input configuration for the interface */ if (mode == MODE_L3) { /* Set L2 config to BD index 0 so that if any packet accidentally * came in on L2 path, it will be dropped in BD 0 */ config->flags = L2_INPUT_FLAG_NONE; config->shg = 0; config->bd_index = 0; config->feature_bitmap = L2INPUT_FEAT_DROP; /* Clear L2 output config */ out_config = l2output_intf_config (sw_if_index); clib_memset (out_config, 0, sizeof (l2_output_config_t)); /* Make sure any L2-output packet to this interface now in L3 mode is * dropped. This may happen if L2 FIB MAC entry is stale */ l2om->output_node_index_vec[sw_if_index] = L2OUTPUT_NEXT_BAD_INTF; } else { /* Add or update l2-output node next-arc and output_node_index_vec table * for the interface */ l2output_create_output_node_mapping (vm, vnet_main, sw_if_index); if (mode == MODE_L2_BRIDGE) { u8 member_flags; /* * Remove a check that the interface must be an Ethernet. * Specifically so we can bridge to L3 tunnel interfaces. * Here's the check: * if (hi->hw_class_index != ethernet_hw_interface_class.index) * */ if (!hi) return MODE_ERROR_ETH; /* non-ethernet */ config->flags = L2_INPUT_FLAG_BRIDGE; config->bd_index = bd_index; l2_input_seq_num_inc (sw_if_index); /* * Enable forwarding, flooding, learning and ARP termination by default * (note that ARP term is disabled on BD feature bitmap by default) */ config->feature_bitmap |= (L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD | L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_UFWD | L2INPUT_FEAT_ARP_TERM); /* Make sure last-chance drop is configured */ config->feature_bitmap |= L2INPUT_FEAT_DROP; /* Make sure xconnect is disabled */ config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT; /* Set up bridge domain */ bd_config = l2input_bd_config (bd_index); bd_validate (bd_config); /* TODO: think: add l2fib entry even for non-bvi interface? */ /* Do BVI interface initializations */ if (L2_BD_PORT_TYPE_BVI == port_type) { vnet_sw_interface_t *si; /* ensure BD has no bvi interface (or replace that one with this??) */ if (bd_config->bvi_sw_if_index != ~0) { return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */ } bd_config->bvi_sw_if_index = sw_if_index; config->flags |= L2_INPUT_FLAG_BVI; /* create the l2fib entry for the bvi interface */ l2fib_add_entry (hi->hw_address, bd_index, sw_if_index, L2FIB_ENTRY_RESULT_FLAG_BVI | L2FIB_ENTRY_RESULT_FLAG_STATIC); /* Disable learning by default. no use since l2fib entry is static. */ config->feature_bitmap &= ~L2INPUT_FEAT_LEARN; /* since this is a BVI interface we want to flood to it */ si = vnet_get_sw_interface (vnm, sw_if_index); si->flood_class = VNET_FLOOD_CLASS_BVI; member_flags = L2_FLOOD_MEMBER_BVI; } else if (L2_BD_PORT_TYPE_UU_FWD == port_type) { bd_config->uu_fwd_sw_if_index = sw_if_index; bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD; } else { member_flags = L2_FLOOD_MEMBER_NORMAL; } if (L2_BD_PORT_TYPE_NORMAL == port_type || L2_BD_PORT_TYPE_BVI == port_type) { /* Add interface to bridge-domain flood vector */ l2_flood_member_t member = { .sw_if_index = sw_if_index, .flags = member_flags, .shg = shg, }; bd_add_member (bd_config, &member); } } else if (mode == MODE_L2_XC) { config->flags = L2_INPUT_FLAG_XCONNECT; config->output_sw_if_index = xc_sw_if_index; /* Make sure last-chance drop is configured */ config->feature_bitmap |= L2INPUT_FEAT_DROP; /* Make sure bridging features are disabled */ config->feature_bitmap &= ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD); config->feature_bitmap |= L2INPUT_FEAT_XCONNECT; shg = 0; /* not used in xconnect */ } else if (mode == MODE_L2_CLASSIFY) { config->flags = L2_INPUT_FLAG_XCONNECT; config->output_sw_if_index = xc_sw_if_index; /* Make sure last-chance drop is configured */ config->feature_bitmap |= L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY; /* Make sure bridging features are disabled */ config->feature_bitmap &= ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD); shg = 0; /* not used in xconnect */ } /* set up split-horizon group and set output feature bit */ config->shg = shg; out_config = l2output_intf_config (sw_if_index); out_config->shg = shg; out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT; /* * Test: remove this when non-IP features can be configured. * Enable a non-IP feature to test IP feature masking * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT; */ l2_if_adjust++; bd_input_walk (bd_index, l2input_recache, NULL); } /* Adjust count of L2 interfaces */ hi->l2_if_count += l2_if_adjust; if (hi->hw_class_index == ethernet_hw_interface_class.index) { if ((hi->l2_if_count == 1) && (l2_if_adjust == 1)) { /* Just added first L2 interface on this port * Set promiscuous mode on the l2 interface */ ethernet_set_flags (vnet_main, hi->hw_if_index, ETHERNET_INTERFACE_FLAG_ACCEPT_ALL); } else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1)) { /* Just removed only L2 subinterface on this port * Disable promiscuous mode on the l2 interface */ ethernet_set_flags (vnet_main, hi->hw_if_index, /*ETHERNET_INTERFACE_FLAG_DEFAULT_L3 */ 0); } } /* Set up the L2/L3 flag in the interface parsing tables */ ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3)); dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index); if (dev_class->set_l2_mode_function) { dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust); } return 0; } static clib_error_t * l2_input_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add) { if (!is_add) { vlib_main_t *vm = vlib_get_main (); l2_input_config_t *config; if (sw_if_index < vec_len (l2input_main.configs)) { config = vec_elt_at_index (l2input_main.configs, sw_if_index); if (l2_input_is_xconnect (config)) set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0); if (l2_input_is_xconnect (config) || l2_input_is_bridge (config)) set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0); } } return (NULL); } VNET_SW_INTERFACE_ADD_DEL_FUNCTION (l2_input_interface_add_del); /** * Set subinterface in bridging mode with a bridge-domain ID. * The CLI format is: * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group] */ static clib_error_t * int_l2_bridge (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); l2_bd_port_type_t port_type; clib_error_t *error = 0; u32 bd_index, bd_id; u32 sw_if_index; u32 rc; u32 shg; if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) { error = clib_error_return (0, "unknown interface `%U'", format_unformat_error, input); goto done; } if (!unformat (input, "%d", &bd_id)) { error = clib_error_return (0, "expected bridge domain ID `%U'", format_unformat_error, input); goto done; } if (bd_id > L2_BD_ID_MAX) { error = clib_error_return (0, "bridge domain ID exceed 16M limit", format_unformat_error, input); goto done; } bd_index = bd_find_or_add_bd_index (&bd_main, bd_id); /* optional bvi */ port_type = L2_BD_PORT_TYPE_NORMAL; if (unformat (input, "bvi")) port_type = L2_BD_PORT_TYPE_BVI; if (unformat (input, "uu-fwd")) port_type = L2_BD_PORT_TYPE_UU_FWD; /* optional split horizon group */ shg = 0; (void) unformat (input, "%d", &shg); /* set the interface mode */ if ((rc = set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, port_type, shg, 0))) { if (rc == MODE_ERROR_ETH) { error = clib_error_return (0, "bridged interface must be ethernet", format_unformat_error, input); } else if (rc == MODE_ERROR_BVI_DEF) { error = clib_error_return (0, "bridge-domain already has a bvi interface", format_unformat_error, input); } else { error = clib_error_return (0, "invalid configuration for interface", format_unformat_error, input); } goto done; } done: return error; } /*? * Use this command put an interface into Layer 2 bridge domain. If a * bridge-domain with the provided bridge-domain-id does not exist, it * will be created. Interfaces in a bridge-domain forward packets to * other interfaces in the same bridge-domain based on destination mac * address. To remove an interface from a the Layer 2 bridge domain, * put the interface in a different mode, for example Layer 3 mode. * * Optionally, an interface can be added to a Layer 2 bridge-domain as * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2 * bridge-domain can be a bvi. * * Optionally, a split-horizon group can also be specified. This defaults * to 0 if not specified. * * @cliexpar * Example of how to configure a Layer 2 bridge-domain with three * interfaces (where 200 is the bridge-domain-id): * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200} * This interface is added a BVI interface: * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi} * This interface also has a split-horizon group of 1 specified: * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1} * Example of how to remove an interface from a Layer2 bridge-domain: * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = { .path = "set interface l2 bridge", .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]", .function = int_l2_bridge, }; /* *INDENT-ON* */ /** * Set subinterface in xconnect mode with another interface. * The CLI format is: * set interface l2 xconnect <interface> <peer interface> */ static clib_error_t * int_l2_xc (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; u32 sw_if_index; u32 xc_sw_if_index; if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) { error = clib_error_return (0, "unknown interface `%U'", format_unformat_error, input); goto done; } if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index)) { error = clib_error_return (0, "unknown peer interface `%U'", format_unformat_error, input); goto done; } /* set the interface mode */ if (set_int_l2_mode (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, xc_sw_if_index)) { error = clib_error_return (0, "invalid configuration for interface", format_unformat_error, input); goto done; } done: return error; } /*? * Use this command put an interface into Layer 2 cross-connect mode. * Both interfaces must be in this mode for bi-directional traffic. All * packets received on one interface will be transmitted to the other. * To remove the Layer 2 cross-connect, put the interface in a different * mode, for example Layer 3 mode. * * @cliexpar * Example of how to configure a Layer2 cross-connect between two interfaces: * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300} * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300} * Example of how to remove a Layer2 cross-connect: * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300} * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (int_l2_xc_cli, static) = { .path = "set interface l2 xconnect", .short_help = "set interface l2 xconnect <interface> <peer interface>", .function = int_l2_xc, }; /* *INDENT-ON* */ /** * Set subinterface in L3 mode. * The CLI format is: * set interface l3 <interface> */ static clib_error_t * int_l3 (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; u32 sw_if_index; if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) { error = clib_error_return (0, "unknown interface `%U'", format_unformat_error, input); goto done; } /* set the interface mode */ if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0)) { error = clib_error_return (0, "invalid configuration for interface", format_unformat_error, input); goto done; } done: return error; } /*? * Modify the packet processing mode of the interface to Layer 3, which * implies packets will be routed. This is the default mode of an interface. * Use this command to remove an interface from a Layer 2 cross-connect or a * Layer 2 bridge. * * @cliexpar * Example of how to set the mode of an interface to Layer 3: * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (int_l3_cli, static) = { .path = "set interface l3", .short_help = "set interface l3 <interface>", .function = int_l3, }; /* *INDENT-ON* */ /** * Show interface mode. * The CLI format is: * show mode [<if-name1> <if-name2> ...] */ static clib_error_t * show_int_mode (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; char *mode; u8 *args; vnet_interface_main_t *im = &vnm->interface_main; vnet_sw_interface_t *si, *sis = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { u32 sw_if_index; /* See if user wants to show specific interface */ if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) { si = pool_elt_at_index (im->sw_interfaces, sw_if_index); vec_add1 (sis, si[0]); } else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, input); goto done; } } if (vec_len (sis) == 0) /* Get all interfaces */ { /* Gather interfaces. */ sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces)); _vec_len (sis) = 0; /* *INDENT-OFF* */ pool_foreach (si, im->sw_interfaces) { vec_add1 (sis, si[0]); } /* *INDENT-ON* */ } vec_foreach (si, sis) { l2_input_config_t *config = l2input_intf_config (si->sw_if_index); if (l2_input_is_bridge (config)) { u32 bd_id; mode = "l2 bridge"; bd_id = l2input_main.bd_configs[config->bd_index].bd_id; args = format (0, "bd_id %d%s shg %d", bd_id, l2_input_is_bvi (config) ? " bvi" : "", config->shg); } else if (l2_input_is_xconnect (config)) { mode = "l2 xconnect"; args = format (0, "%U", format_vnet_sw_if_index_name, vnm, config->output_sw_if_index); } else { mode = "l3"; args = format (0, " "); } vlib_cli_output (vm, "%s %U %v\n", mode, format_vnet_sw_if_index_name, vnm, si->sw_if_index, args); vec_free (args); } done: vec_free (sis); return error; } /*? * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge, * Layer 3 routed) of all interfaces and sub-interfaces, or limit the * output to just the provided list of interfaces and sub-interfaces. * The output shows the mode, the interface, and if the interface is * a member of a bridge, the bridge-domain-id and the split horizon group (shg). * * @cliexpar * Example of displaying the mode of all interfaces: * @cliexstart{show mode} * l3 local0 * l3 GigabitEthernet0/8/0 * l3 GigabitEthernet0/9/0 * l3 GigabitEthernet0/a/0 * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0 * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0 * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0 * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300 * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300 * @cliexend * Example of displaying the mode of a selected list of interfaces: * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200} * l3 GigabitEthernet0/8/0 * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0 * @cliexend ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_l2_mode, static) = { .path = "show mode", .short_help = "show mode [<if-name1> <if-name2> ...]", .function = show_int_mode, }; /* *INDENT-ON* */ #define foreach_l2_init_function \ _(feat_bitmap_drop_init) \ _(l2fib_init) \ _(l2_input_classify_init) \ _(l2bd_init) \ _(l2fwd_init) \ _(l2_in_out_acl_init) \ _(l2input_init) \ _(l2_vtr_init) \ _(l2_invtr_init) \ _(l2_efp_filter_init) \ _(l2learn_init) \ _(l2flood_init) \ _(l2output_init) \ _(l2_patch_init) \ _(l2_xcrw_init) clib_error_t * l2_init (vlib_main_t * vm) { clib_error_t *error; #define _(a) do { \ if ((error = vlib_call_init_function (vm, a))) return error; } \ while (0); foreach_l2_init_function; #undef _ return 0; } VLIB_INIT_FUNCTION (l2_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */