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Diffstat (limited to 'src/vnet/ethernet/interface.c')
| -rw-r--r-- | src/vnet/ethernet/interface.c | 880 |
1 files changed, 880 insertions, 0 deletions
diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c new file mode 100644 index 00000000..3e78a49d --- /dev/null +++ b/src/vnet/ethernet/interface.c @@ -0,0 +1,880 @@ +/* + * Copyright (c) 2015 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. + */ +/* + * ethernet_interface.c: ethernet interfaces + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/pg/pg.h> +#include <vnet/ethernet/ethernet.h> +#include <vnet/l2/l2_input.h> +#include <vnet/adj/adj.h> + +/** + * @file + * @brief Loopback Interfaces. + * + * This file contains code to manage loopback interfaces. + */ + +const u8 * +ethernet_ip4_mcast_dst_addr (void) +{ + const static u8 ethernet_mcast_dst_mac[] = { + 0x1, 0x0, 0x5e, 0x0, 0x0, 0x0, + }; + + return (ethernet_mcast_dst_mac); +} + +const u8 * +ethernet_ip6_mcast_dst_addr (void) +{ + const static u8 ethernet_mcast_dst_mac[] = { + 0x33, 0x33, 0x00, 0x0, 0x0, 0x0, + }; + + return (ethernet_mcast_dst_mac); +} + +/** + * @brief build a rewrite string to use for sending packets of type 'link_type' + * to 'dst_address' + */ +u8 * +ethernet_build_rewrite (vnet_main_t * vnm, + u32 sw_if_index, + vnet_link_t link_type, const void *dst_address) +{ + vnet_sw_interface_t *sub_sw = vnet_get_sw_interface (vnm, sw_if_index); + vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index); + vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index); + ethernet_main_t *em = ðernet_main; + ethernet_interface_t *ei; + ethernet_header_t *h; + ethernet_type_t type; + uword n_bytes = sizeof (h[0]); + u8 *rewrite = NULL; + u8 is_p2p = 0; + + if (sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) + is_p2p = 1; + if (sub_sw != sup_sw) + { + if (sub_sw->sub.eth.flags.one_tag) + { + n_bytes += sizeof (ethernet_vlan_header_t); + } + else if (sub_sw->sub.eth.flags.two_tags) + { + n_bytes += 2 * (sizeof (ethernet_vlan_header_t)); + } + else if (PREDICT_FALSE (is_p2p)) + { + n_bytes = sizeof (ethernet_header_t); + } + if (PREDICT_FALSE (!is_p2p)) + { + // Check for encaps that are not supported for L3 interfaces + if (!(sub_sw->sub.eth.flags.exact_match) || + (sub_sw->sub.eth.flags.default_sub) || + (sub_sw->sub.eth.flags.outer_vlan_id_any) || + (sub_sw->sub.eth.flags.inner_vlan_id_any)) + { + return 0; + } + } + else + { + n_bytes = sizeof (ethernet_header_t); + } + } + + switch (link_type) + { +#define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break + _(IP4, IP4); + _(IP6, IP6); + _(MPLS, MPLS); + _(ARP, ARP); +#undef _ + default: + return NULL; + } + + vec_validate (rewrite, n_bytes - 1); + h = (ethernet_header_t *) rewrite; + ei = pool_elt_at_index (em->interfaces, hw->hw_instance); + clib_memcpy (h->src_address, ei->address, sizeof (h->src_address)); + if (is_p2p) + { + clib_memcpy (h->dst_address, sub_sw->p2p.client_mac, + sizeof (h->dst_address)); + } + else + { + if (dst_address) + clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address)); + else + memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */ + } + + if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag) + { + ethernet_vlan_header_t *outer = (void *) (h + 1); + + h->type = sub_sw->sub.eth.flags.dot1ad ? + clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) : + clib_host_to_net_u16 (ETHERNET_TYPE_VLAN); + outer->priority_cfi_and_id = + clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id); + outer->type = clib_host_to_net_u16 (type); + + } + else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags) + { + ethernet_vlan_header_t *outer = (void *) (h + 1); + ethernet_vlan_header_t *inner = (void *) (outer + 1); + + h->type = sub_sw->sub.eth.flags.dot1ad ? + clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) : + clib_host_to_net_u16 (ETHERNET_TYPE_VLAN); + outer->priority_cfi_and_id = + clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id); + outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN); + inner->priority_cfi_and_id = + clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id); + inner->type = clib_host_to_net_u16 (type); + + } + else + { + h->type = clib_host_to_net_u16 (type); + } + + return (rewrite); +} + +void +ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai) +{ + ip_adjacency_t *adj; + + adj = adj_get (ai); + + vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index); + if (si->type == VNET_SW_INTERFACE_TYPE_P2P) + { + default_update_adjacency (vnm, sw_if_index, ai); + } + else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto) + { + arp_update_adjacency (vnm, sw_if_index, ai); + } + else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto) + { + ip6_ethernet_update_adjacency (vnm, sw_if_index, ai); + } + else + { + ASSERT (0); + } +} + +static clib_error_t * +ethernet_mac_change (vnet_hw_interface_t * hi, char *mac_address) +{ + ethernet_interface_t *ei; + ethernet_main_t *em; + + em = ðernet_main; + ei = pool_elt_at_index (em->interfaces, hi->hw_instance); + + vec_validate (hi->hw_address, + STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1); + clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address)); + + clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address)); + ethernet_arp_change_mac (hi->sw_if_index); + ethernet_ndp_change_mac (hi->sw_if_index); + + return (NULL); +} + +/* *INDENT-OFF* */ +VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = { + .name = "Ethernet", + .format_address = format_ethernet_address, + .format_header = format_ethernet_header_with_length, + .unformat_hw_address = unformat_ethernet_address, + .unformat_header = unformat_ethernet_header, + .build_rewrite = ethernet_build_rewrite, + .update_adjacency = ethernet_update_adjacency, + .mac_addr_change_function = ethernet_mac_change, +}; +/* *INDENT-ON* */ + +uword +unformat_ethernet_interface (unformat_input_t * input, va_list * args) +{ + vnet_main_t *vnm = va_arg (*args, vnet_main_t *); + u32 *result = va_arg (*args, u32 *); + u32 hw_if_index; + ethernet_main_t *em = ðernet_main; + ethernet_interface_t *eif; + + if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index)) + return 0; + + eif = ethernet_get_interface (em, hw_if_index); + if (eif) + { + *result = hw_if_index; + return 1; + } + return 0; +} + +clib_error_t * +ethernet_register_interface (vnet_main_t * vnm, + u32 dev_class_index, + u32 dev_instance, + u8 * address, + u32 * hw_if_index_return, + ethernet_flag_change_function_t flag_change) +{ + ethernet_main_t *em = ðernet_main; + ethernet_interface_t *ei; + vnet_hw_interface_t *hi; + clib_error_t *error = 0; + u32 hw_if_index; + + pool_get (em->interfaces, ei); + ei->flag_change = flag_change; + + hw_if_index = vnet_register_interface + (vnm, + dev_class_index, dev_instance, + ethernet_hw_interface_class.index, ei - em->interfaces); + *hw_if_index_return = hw_if_index; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + + ethernet_setup_node (vnm->vlib_main, hi->output_node_index); + + hi->min_packet_bytes = hi->min_supported_packet_bytes = + ETHERNET_MIN_PACKET_BYTES; + hi->max_packet_bytes = hi->max_supported_packet_bytes = + ETHERNET_MAX_PACKET_BYTES; + hi->per_packet_overhead_bytes = + /* preamble */ 8 + /* inter frame gap */ 12; + + /* Standard default ethernet MTU. */ + hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000; + + clib_memcpy (ei->address, address, sizeof (ei->address)); + vec_free (hi->hw_address); + vec_add (hi->hw_address, address, sizeof (ei->address)); + + if (error) + { + pool_put (em->interfaces, ei); + return error; + } + return error; +} + +void +ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index) +{ + ethernet_main_t *em = ðernet_main; + ethernet_interface_t *ei; + vnet_hw_interface_t *hi; + main_intf_t *main_intf; + vlan_table_t *vlan_table; + u32 idx; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + ei = pool_elt_at_index (em->interfaces, hi->hw_instance); + + /* Delete vlan mapping table for dot1q and dot1ad. */ + main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index); + if (main_intf->dot1q_vlans) + { + vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans); + for (idx = 0; idx < ETHERNET_N_VLAN; idx++) + { + if (vlan_table->vlans[idx].qinqs) + { + pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs); + } + } + pool_put_index (em->vlan_pool, main_intf->dot1q_vlans); + } + if (main_intf->dot1ad_vlans) + { + vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans); + for (idx = 0; idx < ETHERNET_N_VLAN; idx++) + { + if (vlan_table->vlans[idx].qinqs) + { + pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs); + } + } + pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans); + } + + vnet_delete_hw_interface (vnm, hw_if_index); + pool_put (em->interfaces, ei); +} + +u32 +ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags) +{ + ethernet_main_t *em = ðernet_main; + vnet_hw_interface_t *hi; + ethernet_interface_t *ei; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + + ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index); + + ei = pool_elt_at_index (em->interfaces, hi->hw_instance); + if (ei->flag_change) + return ei->flag_change (vnm, hi, flags); + return (u32) ~ 0; +} + +/* Echo packets back to ethernet/l2-input. */ +static uword +simulated_ethernet_interface_tx (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + u32 n_left_from, n_left_to_next, n_copy, *from, *to_next; + u32 next_index = VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT; + u32 i, next_node_index, bvi_flag, sw_if_index; + u32 n_pkts = 0, n_bytes = 0; + u32 thread_index = vm->thread_index; + vnet_main_t *vnm = vnet_get_main (); + vnet_interface_main_t *im = &vnm->interface_main; + vlib_node_main_t *nm = &vm->node_main; + vlib_node_t *loop_node; + vlib_buffer_t *b; + + // check tx node index, it is ethernet-input on loopback create + // but can be changed to l2-input if loopback is configured as + // BVI of a BD (Bridge Domain). + loop_node = vec_elt (nm->nodes, node->node_index); + next_node_index = loop_node->next_nodes[next_index]; + bvi_flag = (next_node_index == l2input_node.index) ? 1 : 0; + + n_left_from = frame->n_vectors; + from = vlib_frame_args (frame); + + while (n_left_from > 0) + { + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + n_copy = clib_min (n_left_from, n_left_to_next); + + clib_memcpy (to_next, from, n_copy * sizeof (from[0])); + n_left_to_next -= n_copy; + n_left_from -= n_copy; + i = 0; + b = vlib_get_buffer (vm, from[i]); + sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; + while (1) + { + // Set up RX and TX indices as if received from a real driver + // unless loopback is used as a BVI. For BVI case, leave TX index + // and update l2_len in packet as required for l2 forwarding path + vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index; + if (bvi_flag) + { + vnet_update_l2_len (b); + vnet_buffer (b)->sw_if_index[VLIB_TX] = L2INPUT_BVI; + } + else + vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0; + + i++; + n_pkts++; + n_bytes += vlib_buffer_length_in_chain (vm, b); + + if (i < n_copy) + b = vlib_get_buffer (vm, from[i]); + else + break; + } + from += n_copy; + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + + /* increment TX interface stat */ + vlib_increment_combined_counter (im->combined_sw_if_counters + + VNET_INTERFACE_COUNTER_TX, + thread_index, sw_if_index, n_pkts, + n_bytes); + } + + return n_left_from; +} + +static u8 * +format_simulated_ethernet_name (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + return format (s, "loop%d", dev_instance); +} + +static clib_error_t * +simulated_ethernet_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 0; +} + +/* *INDENT-OFF* */ +VNET_DEVICE_CLASS (ethernet_simulated_device_class) = { + .name = "Loopback", + .format_device_name = format_simulated_ethernet_name, + .tx_function = simulated_ethernet_interface_tx, + .admin_up_down_function = simulated_ethernet_admin_up_down, +}; +/* *INDENT-ON* */ + + +/* + * Maintain a bitmap of allocated loopback instance numbers. + */ +#define LOOPBACK_MAX_INSTANCE (16 * 1024) + +static u32 +loopback_instance_alloc (u8 is_specified, u32 want) +{ + ethernet_main_t *em = ðernet_main; + + /* + * Check for dynamically allocaetd instance number. + */ + if (!is_specified) + { + u32 bit; + + bit = clib_bitmap_first_clear (em->bm_loopback_instances); + if (bit >= LOOPBACK_MAX_INSTANCE) + { + return ~0; + } + em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances, + bit, 1); + return bit; + } + + /* + * In range? + */ + if (want >= LOOPBACK_MAX_INSTANCE) + { + return ~0; + } + + /* + * Already in use? + */ + if (clib_bitmap_get (em->bm_loopback_instances, want)) + { + return ~0; + } + + /* + * Grant allocation request. + */ + em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances, + want, 1); + + return want; +} + +static int +loopback_instance_free (u32 instance) +{ + ethernet_main_t *em = ðernet_main; + + if (instance >= LOOPBACK_MAX_INSTANCE) + { + return -1; + } + + if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0) + { + return -1; + } + + em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances, + instance, 0); + return 0; +} + +int +vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address, + u8 is_specified, u32 user_instance) +{ + vnet_main_t *vnm = vnet_get_main (); + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u32 instance; + u8 address[6]; + u32 hw_if_index; + vnet_hw_interface_t *hw_if; + u32 slot; + int rv = 0; + + ASSERT (sw_if_indexp); + + *sw_if_indexp = (u32) ~ 0; + + memset (address, 0, sizeof (address)); + + /* + * Allocate a loopback instance. Either select on dynamically + * or try to use the desired user_instance number. + */ + instance = loopback_instance_alloc (is_specified, user_instance); + if (instance == ~0) + { + return VNET_API_ERROR_INVALID_REGISTRATION; + } + + /* + * Default MAC address (dead:0000:0000 + instance) is allocated + * if zero mac_address is configured. Otherwise, user-configurable MAC + * address is programmed on the loopback interface. + */ + if (memcmp (address, mac_address, sizeof (address))) + clib_memcpy (address, mac_address, sizeof (address)); + else + { + address[0] = 0xde; + address[1] = 0xad; + address[5] = instance; + } + + error = ethernet_register_interface + (vnm, + ethernet_simulated_device_class.index, instance, address, &hw_if_index, + /* flag change */ 0); + + if (error) + { + rv = VNET_API_ERROR_INVALID_REGISTRATION; + clib_error_report (error); + return rv; + } + + hw_if = vnet_get_hw_interface (vnm, hw_if_index); + slot = vlib_node_add_named_next_with_slot + (vm, hw_if->tx_node_index, + "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); + ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT); + + { + vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index); + *sw_if_indexp = si->sw_if_index; + } + + return 0; +} + +static clib_error_t * +create_simulated_ethernet_interfaces (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + int rv; + u32 sw_if_index; + u8 mac_address[6]; + u8 is_specified = 0; + u32 user_instance = 0; + + memset (mac_address, 0, sizeof (mac_address)); + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "mac %U", unformat_ethernet_address, mac_address)) + ; + if (unformat (input, "instance %d", &user_instance)) + is_specified = 1; + else + break; + } + + rv = vnet_create_loopback_interface (&sw_if_index, mac_address, + is_specified, user_instance); + + if (rv) + return clib_error_return (0, "vnet_create_loopback_interface failed"); + + vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (), + sw_if_index); + return 0; +} + +/*? + * Create a loopback interface. Optionally, a MAC Address can be + * provided. If not provided, de:ad:00:00:00:<loopId> will be used. + * + * @cliexpar + * The following two command syntaxes are equivalent: + * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]} + * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]} + * Example of how to create a loopback interface: + * @cliexcmd{loopback create-interface} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = { + .path = "loopback create-interface", + .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]", + .function = create_simulated_ethernet_interfaces, +}; +/* *INDENT-ON* */ + +/*? + * Create a loopback interface. Optionally, a MAC Address can be + * provided. If not provided, de:ad:00:00:00:<loopId> will be used. + * + * @cliexpar + * The following two command syntaxes are equivalent: + * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]} + * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]} + * Example of how to create a loopback interface: + * @cliexcmd{create loopback interface} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (create_loopback_interface_command, static) = { + .path = "create loopback interface", + .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]", + .function = create_simulated_ethernet_interfaces, +}; +/* *INDENT-ON* */ + +ethernet_interface_t * +ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index) +{ + vnet_hw_interface_t *i = + vnet_get_hw_interface (vnet_get_main (), hw_if_index); + return (i->hw_class_index == + ethernet_hw_interface_class. + index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0); +} + +int +vnet_delete_loopback_interface (u32 sw_if_index) +{ + vnet_main_t *vnm = vnet_get_main (); + vnet_sw_interface_t *si; + u32 hw_if_index; + vnet_hw_interface_t *hw; + u32 instance; + + if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index)) + return VNET_API_ERROR_INVALID_SW_IF_INDEX; + + si = vnet_get_sw_interface (vnm, sw_if_index); + hw_if_index = si->hw_if_index; + hw = vnet_get_hw_interface (vnm, hw_if_index); + instance = hw->dev_instance; + + if (loopback_instance_free (instance) < 0) + { + return VNET_API_ERROR_INVALID_SW_IF_INDEX; + } + + ethernet_delete_interface (vnm, hw_if_index); + + return 0; +} + +int +vnet_delete_sub_interface (u32 sw_if_index) +{ + vnet_main_t *vnm = vnet_get_main (); + int rv = 0; + + if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index)) + return VNET_API_ERROR_INVALID_SW_IF_INDEX; + + + vnet_interface_main_t *im = &vnm->interface_main; + vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index); + + if (si->type == VNET_SW_INTERFACE_TYPE_SUB || + si->type == VNET_SW_INTERFACE_TYPE_P2P) + { + vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index); + u64 sup_and_sub_key = + ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id; + + hash_unset_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key); + vnet_delete_sw_interface (vnm, sw_if_index); + } + else + { + rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX; + } + return rv; +} + +static clib_error_t * +delete_simulated_ethernet_interfaces (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + int rv; + u32 sw_if_index = ~0; + vnet_main_t *vnm = vnet_get_main (); + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "intfc %U", + unformat_vnet_sw_interface, vnm, &sw_if_index)) + ; + else + break; + } + + if (sw_if_index == ~0) + return clib_error_return (0, "interface not specified"); + + rv = vnet_delete_loopback_interface (sw_if_index); + + if (rv) + return clib_error_return (0, "vnet_delete_loopback_interface failed"); + + return 0; +} + +static clib_error_t * +delete_sub_interface (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + int rv = 0; + u32 sw_if_index = ~0; + vnet_main_t *vnm = vnet_get_main (); + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat + (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) + ; + else + break; + } + if (sw_if_index == ~0) + return clib_error_return (0, "interface doesn't exist"); + + if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index)) + rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; + else + rv = vnet_delete_sub_interface (sw_if_index); + if (rv) + return clib_error_return (0, "delete_subinterface_interface failed"); + return 0; +} + +/*? + * Delete a loopback interface. + * + * @cliexpar + * The following two command syntaxes are equivalent: + * @cliexcmd{loopback delete-interface intfc <interface>} + * @cliexcmd{delete loopback interface intfc <interface>} + * Example of how to delete a loopback interface: + * @cliexcmd{loopback delete-interface intfc loop0} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = { + .path = "loopback delete-interface", + .short_help = "loopback delete-interface intfc <interface>", + .function = delete_simulated_ethernet_interfaces, +}; +/* *INDENT-ON* */ + +/*? + * Delete a loopback interface. + * + * @cliexpar + * The following two command syntaxes are equivalent: + * @cliexcmd{loopback delete-interface intfc <interface>} + * @cliexcmd{delete loopback interface intfc <interface>} + * Example of how to delete a loopback interface: + * @cliexcmd{delete loopback interface intfc loop0} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = { + .path = "delete loopback interface", + .short_help = "delete loopback interface intfc <interface>", + .function = delete_simulated_ethernet_interfaces, +}; +/* *INDENT-ON* */ + +/*? + * Delete a sub-interface. + * + * @cliexpar + * Example of how to delete a sub-interface: + * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (delete_sub_interface_command, static) = { + .path = "delete sub-interface", + .short_help = "delete sub-interface <interface>", + .function = delete_sub_interface, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |