diff options
Diffstat (limited to 'src/vnet/ip/ip6_link.c')
| -rw-r--r-- | src/vnet/ip/ip6_link.c | 873 |
1 files changed, 873 insertions, 0 deletions
diff --git a/src/vnet/ip/ip6_link.c b/src/vnet/ip/ip6_link.c new file mode 100644 index 00000000000..b73fbe2125f --- /dev/null +++ b/src/vnet/ip/ip6_link.c @@ -0,0 +1,873 @@ +/* + * Copyright (c) 2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/ip/ip6_link.h> +#include <vnet/ip/ip6_ll_table.h> + +#include <vnet/ethernet/ethernet.h> +#include <vnet/mfib/ip6_mfib.h> +#include <vnet/adj/adj_mcast.h> + +typedef struct ip6_link_delegate_t_ +{ + u32 ild_sw_if_index; + ip6_link_delegate_id_t ild_type; + index_t ild_index; +} ip6_link_delegate_t; + +const static ip6_link_delegate_t ip6_link_delegate_uninit = { + .ild_sw_if_index = ~0, +}; + +typedef struct ip6_link_t_ +{ + /** interface ip6 is enabled on */ + u32 il_sw_if_index; + + /** link-local address - if unset that IP6 is disabled*/ + ip6_address_t il_ll_addr; + + /** list of delegates */ + ip6_link_delegate_t *il_delegates; + + /** multicast adjacency for this link */ + adj_index_t il_mcast_adj; + + /** number of references to IP6 enabled on this link */ + u32 il_locks; +} ip6_link_t; + +#define FOREACH_IP6_LINK_DELEGATE(_ild, _il, body) \ +{ \ + if (NULL != _il) { \ + vec_foreach (_ild, _il->il_delegates) { \ + if (ip6_link_delegate_is_init(_ild)) \ + body; \ + } \ + } \ +} + +#define FOREACH_IP6_LINK_DELEGATE_ID(_id) \ + for (_id = 0; _id < il_delegate_id; _id++) + +/** last used delegate ID */ +static ip6_link_delegate_id_t il_delegate_id; + +/** VFT registered per-delegate type */ +static ip6_link_delegate_vft_t *il_delegate_vfts; + +/** Per interface configs */ +static ip6_link_t *ip6_links; + +/** Randomizer */ +static u64 il_randomizer; + +/** Logging */ +static vlib_log_class_t ip6_link_logger; + +#define IP6_LINK_DBG(...) \ + vlib_log_debug (ip6_link_logger, __VA_ARGS__); + +#define IP6_LINK_INFO(...) \ + vlib_log_notice (ip6_link_logger, __VA_ARGS__); + +static bool +ip6_link_delegate_is_init (const ip6_link_delegate_t * ild) +{ + return (~0 != ild->ild_sw_if_index); +} + +static bool +ip6_link_is_enabled_i (const ip6_link_t * il) +{ + return (!ip6_address_is_zero (&il->il_ll_addr)); +} + +static void +ip6_link_local_address_from_mac (ip6_address_t * ip, const u8 * mac) +{ + ip->as_u64[0] = clib_host_to_net_u64 (0xFE80000000000000ULL); + /* Invert the "u" bit */ + ip->as_u8[8] = mac[0] ^ (1 << 1); + ip->as_u8[9] = mac[1]; + ip->as_u8[10] = mac[2]; + ip->as_u8[11] = 0xFF; + ip->as_u8[12] = 0xFE; + ip->as_u8[13] = mac[3]; + ip->as_u8[14] = mac[4]; + ip->as_u8[15] = mac[5]; +} + +static void +ip6_mac_address_from_link_local (u8 * mac, const ip6_address_t * ip) +{ + /* Invert the previously inverted "u" bit */ + mac[0] = ip->as_u8[8] ^ (1 << 1); + mac[1] = ip->as_u8[9]; + mac[2] = ip->as_u8[10]; + mac[3] = ip->as_u8[13]; + mac[4] = ip->as_u8[14]; + mac[5] = ip->as_u8[15]; +} + +static ip6_link_t * +ip6_link_get (u32 sw_if_index) +{ + ip6_link_t *il; + + if (sw_if_index >= vec_len (ip6_links)) + return (NULL); + + il = &ip6_links[sw_if_index]; + + if (!ip6_link_is_enabled_i (il)) + return (NULL); + + return (il); +} + +bool +ip6_link_is_enabled (u32 sw_if_index) +{ + return (NULL != ip6_link_get (sw_if_index)); +} + + +int +ip6_link_enable (u32 sw_if_index) +{ + ip6_link_t *il; + int rv; + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + { + const vnet_sw_interface_t *sw, *sw_sup; + const ethernet_interface_t *eth; + vnet_main_t *vnm; + + vnm = vnet_get_main (); + + IP6_LINK_INFO ("enable: %U", + format_vnet_sw_if_index_name, vnm, sw_if_index); + + sw_sup = vnet_get_sup_sw_interface (vnm, sw_if_index); + if (sw_sup->type != VNET_SW_INTERFACE_TYPE_HARDWARE) + { + rv = VNET_API_ERROR_UNSUPPORTED; + goto out; + } + + eth = ethernet_get_interface (ðernet_main, sw_sup->hw_if_index); + + if (NULL == eth) + { + rv = VNET_API_ERROR_UNSUPPORTED; + goto out; + } + + vec_validate (ip6_links, sw_if_index); + + il = &ip6_links[sw_if_index]; + il->il_locks = 1; + il->il_sw_if_index = sw_if_index; + + sw = vnet_get_sup_sw_interface (vnm, sw_if_index); + + if (sw->type == VNET_SW_INTERFACE_TYPE_SUB || + sw->type == VNET_SW_INTERFACE_TYPE_PIPE || + sw->type == VNET_SW_INTERFACE_TYPE_P2P) + { + il->il_ll_addr.as_u64[0] = + clib_host_to_net_u64 (0xFE80000000000000ULL); + + /* make up an interface id */ + il->il_ll_addr.as_u64[1] = random_u64 (&il_randomizer); + + /* clear u bit */ + il->il_ll_addr.as_u8[8] &= 0xfd; + } + else + { + ip6_link_local_address_from_mac (&il->il_ll_addr, eth->address); + } + + { + ip6_ll_prefix_t ilp = { + .ilp_addr = il->il_ll_addr, + .ilp_sw_if_index = sw_if_index, + }; + + ip6_ll_table_entry_update (&ilp, FIB_ROUTE_PATH_LOCAL); + } + + /* essentially "enables" ipv6 on this interface */ + ip6_mfib_interface_enable_disable (sw_if_index, 1); + ip6_sw_interface_enable_disable (sw_if_index, 1); + + il->il_mcast_adj = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6, + VNET_LINK_IP6, sw_if_index); + + /* inform all register clients */ + ip6_link_delegate_id_t id; + FOREACH_IP6_LINK_DELEGATE_ID (id) + { + if (NULL != il_delegate_vfts[id].ildv_enable) + il_delegate_vfts[id].ildv_enable (il->il_sw_if_index); + } + + rv = 0; + } + else + { + rv = VNET_API_ERROR_VALUE_EXIST; + } + +out: + return (rv); +} + +static void +ip6_link_delegate_flush (ip6_link_t * il) +{ + ip6_link_delegate_t *ild; + + /* *INDET-OFF* */ + FOREACH_IP6_LINK_DELEGATE (ild, il, ( + { + il_delegate_vfts[ild-> + ild_type].ildv_disable + (ild->ild_index); + })); + /* *INDET-ON* */ + + vec_free (il->il_delegates); + il->il_delegates = NULL; +} + +static void +ip6_link_last_lock_gone (ip6_link_t * il) +{ + ip6_ll_prefix_t ilp = { + .ilp_addr = il->il_ll_addr, + .ilp_sw_if_index = il->il_sw_if_index, + }; + + IP6_LINK_INFO ("last-lock: %U", + format_vnet_sw_if_index_name, + vnet_get_main (), il->il_sw_if_index); + + ip6_link_delegate_flush (il); + ip6_ll_table_entry_delete (&ilp); + + ip6_mfib_interface_enable_disable (il->il_sw_if_index, 0); + ip6_sw_interface_enable_disable (il->il_sw_if_index, 0); + + ip6_address_set_zero (&il->il_ll_addr); + adj_unlock (il->il_mcast_adj); + il->il_mcast_adj = ADJ_INDEX_INVALID; +} + +static void +ip6_link_unlock (ip6_link_t * il) +{ + if (NULL == il) + return; + + il->il_locks--; + + if (0 == il->il_locks) + ip6_link_last_lock_gone (il); +} + +int +ip6_link_disable (u32 sw_if_index) +{ + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + return (VNET_API_ERROR_IP6_NOT_ENABLED); + + IP6_LINK_INFO ("disable: %U", + format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index); + + ip6_link_unlock (il); + + return (0); +} + +const ip6_address_t * +ip6_get_link_local_address (u32 sw_if_index) +{ + const ip6_link_t *il; + + vec_validate (ip6_links, sw_if_index); + + il = &ip6_links[sw_if_index]; + + return (&il->il_ll_addr); +} + +adj_index_t +ip6_link_get_mcast_adj (u32 sw_if_index) +{ + const ip6_link_t *il; + + il = &ip6_links[sw_if_index]; + + return (il->il_mcast_adj); +} + +int +ip6_src_address_for_packet (u32 sw_if_index, + const ip6_address_t * dst, ip6_address_t * src) +{ + ip_lookup_main_t *lm; + + lm = &ip6_main.lookup_main; + + if (ip6_address_is_link_local_unicast (dst)) + { + ip6_address_copy (src, ip6_get_link_local_address (sw_if_index)); + + return (!0); + } + else + { + u32 if_add_index = + lm->if_address_pool_index_by_sw_if_index[sw_if_index]; + if (PREDICT_TRUE (if_add_index != ~0)) + { + ip_interface_address_t *if_add = + pool_elt_at_index (lm->if_address_pool, if_add_index); + ip6_address_t *if_ip = + ip_interface_address_get_address (lm, if_add); + *src = *if_ip; + return (!0); + } + } + + src->as_u64[0] = 0; + src->as_u64[1] = 0; + + return (0); +} + +int +ip6_set_link_local_address (u32 sw_if_index, const ip6_address_t * address) +{ + ip6_link_delegate_t *ild; + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + return (VNET_API_ERROR_IP6_NOT_ENABLED); + + ip6_ll_prefix_t ilp = { + .ilp_addr = il->il_ll_addr, + .ilp_sw_if_index = sw_if_index, + }; + + IP6_LINK_INFO ("set-ll: %U -> %U", + format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index, + format_ip6_address, address); + + ip6_ll_table_entry_delete (&ilp); + ip6_address_copy (&il->il_ll_addr, address); + ip6_address_copy (&ilp.ilp_addr, address); + ip6_ll_table_entry_update (&ilp, FIB_ROUTE_PATH_LOCAL); + + /* *INDENT-OFF* */ + FOREACH_IP6_LINK_DELEGATE (ild, il, + ({ + if (NULL != il_delegate_vfts[ild->ild_type].ildv_ll_change) + il_delegate_vfts[ild->ild_type].ildv_ll_change(ild->ild_index, + &il->il_ll_addr); + })); + /* *INDENT-ON* */ + + return (0); +} + +ip6_link_delegate_id_t +ip6_link_delegate_register (const ip6_link_delegate_vft_t * vft) +{ + ip6_link_delegate_id_t rc = il_delegate_id++; + + ASSERT (vft->ildv_disable); + + vec_validate (il_delegate_vfts, rc); + + il_delegate_vfts[rc] = *vft; + + return (rc); +} + +index_t +ip6_link_delegate_get (u32 sw_if_index, ip6_link_delegate_id_t id) +{ + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + return (INDEX_INVALID); + + vec_validate_init_empty (il->il_delegates, id, ip6_link_delegate_uninit); + + if (!ip6_link_delegate_is_init (&il->il_delegates[id])) + return (INDEX_INVALID); + + return (il->il_delegates[id].ild_index); +} + +bool +ip6_link_delegate_update (u32 sw_if_index, + ip6_link_delegate_id_t id, index_t ii) +{ + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + return (false); + + vec_validate_init_empty (il->il_delegates, id, ip6_link_delegate_uninit); + + il->il_delegates[id].ild_sw_if_index = sw_if_index; + il->il_delegates[id].ild_type = id; + il->il_delegates[id].ild_index = ii; + + return (true); +} + +void +ip6_link_delegate_remove (u32 sw_if_index, + ip6_link_delegate_id_t id, index_t ii) +{ + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + if (NULL != il) + { + if (vec_len (il->il_delegates) > id) + { + clib_memcpy (&il->il_delegates[id], + &ip6_link_delegate_uninit, + sizeof (il->il_delegates[0])); + } + } +} + +static void +ip6_link_add_del_address (ip6_main_t * im, + uword opaque, + u32 sw_if_index, + ip6_address_t * address, + u32 address_length, + u32 if_address_index, u32 is_delete) +{ + const ip6_link_delegate_t *ild; + ip6_link_t *il; + + if (ip6_address_is_link_local_unicast (address)) + // only interested in global addresses here + return; + + IP6_LINK_INFO ("addr-%s: %U -> %U", + (is_delete ? "del" : "add"), + format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index, + format_ip6_address, address); + + il = ip6_link_get (sw_if_index); + + if (NULL == il) + return; + + /* *INDENT-OFF* */ + FOREACH_IP6_LINK_DELEGATE (ild, il, + ({ + if (is_delete) + { + if (NULL != il_delegate_vfts[ild->ild_type].ildv_addr_del) + il_delegate_vfts[ild->ild_type].ildv_addr_del(ild->ild_index, + address, address_length); + } + else + { + if (NULL != il_delegate_vfts[ild->ild_type].ildv_addr_add) + il_delegate_vfts[ild->ild_type].ildv_addr_add(ild->ild_index, + address, address_length); + } + })); + /* *INDENT-ON* */ +} + +static clib_error_t * +ip6_link_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add) +{ + if (!is_add) + { + ip6_link_t *il; + + il = ip6_link_get (sw_if_index); + + IP6_LINK_DBG ("link-del: %U", + format_vnet_sw_if_index_name, vnet_get_main (), + sw_if_index); + + if (NULL != il) + /* force cleanup */ + ip6_link_last_lock_gone (il); + } + + return (NULL); +} + +VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_link_interface_add_del); + +static clib_error_t * +ip6_link_init (vlib_main_t * vm) +{ + il_randomizer = clib_cpu_time_now (); + ip6_link_logger = vlib_log_register_class ("ip6", "link"); + + { + ip6_add_del_interface_address_callback_t cb = { + .function = ip6_link_add_del_address, + }; + vec_add1 (ip6_main.add_del_interface_address_callbacks, cb); + } + return (NULL); +} + +VLIB_INIT_FUNCTION (ip6_link_init); + + +static clib_error_t * +test_ip6_link_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + u8 mac[6]; + ip6_address_t _a, *a = &_a; + + if (unformat (input, "%U", unformat_ethernet_address, mac)) + { + ip6_link_local_address_from_mac (a, mac); + vlib_cli_output (vm, "Link local address: %U", format_ip6_address, a); + ip6_mac_address_from_link_local (mac, a); + vlib_cli_output (vm, "Original MAC address: %U", + format_ethernet_address, mac); + } + + return 0; +} + +/*? + * This command converts the given MAC Address into an IPv6 link-local + * address. + * + * @cliexpar + * Example of how to create an IPv6 link-local address: + * @cliexstart{test ip6 link 16:d9:e0:91:79:86} + * Link local address: fe80::14d9:e0ff:fe91:7986 + * Original MAC address: 16:d9:e0:91:79:86 + * @cliexend +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (test_link_command, static) = +{ + .path = "test ip6 link", + .function = test_ip6_link_command_fn, + .short_help = "test ip6 link <mac-address>", +}; +/* *INDENT-ON* */ + +static u8 * +ip6_print_addrs (u8 * s, u32 * addrs) +{ + ip_lookup_main_t *lm = &ip6_main.lookup_main; + u32 i; + + for (i = 0; i < vec_len (addrs); i++) + { + ip_interface_address_t *a = + pool_elt_at_index (lm->if_address_pool, addrs[i]); + ip6_address_t *address = ip_interface_address_get_address (lm, a); + + s = format (s, "%U%U/%d\n", + format_white_space, 4, + format_ip6_address, address, a->address_length); + } + + return (s); +} + +static u8 * +format_ip6_link (u8 * s, va_list * arg) +{ + const ip6_link_t *il = va_arg (*arg, ip6_link_t *); + ip_lookup_main_t *lm = &ip6_main.lookup_main; + vnet_main_t *vnm = vnet_get_main (); + + if (!ip6_link_is_enabled_i (il)) + return (s); + + s = format (s, "%U is admin %s\n", + format_vnet_sw_interface_name, vnm, + vnet_get_sw_interface (vnm, il->il_sw_if_index), + (vnet_sw_interface_is_admin_up (vnm, il->il_sw_if_index) ? + "up" : "down")); + + u32 ai; + u32 *link_scope = 0, *global_scope = 0; + u32 *local_scope = 0, *unknown_scope = 0; + ip_interface_address_t *a; + const ip6_link_delegate_t *ild; + + vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index, + il->il_sw_if_index, ~0); + ai = lm->if_address_pool_index_by_sw_if_index[il->il_sw_if_index]; + + while (ai != (u32) ~ 0) + { + a = pool_elt_at_index (lm->if_address_pool, ai); + ip6_address_t *address = ip_interface_address_get_address (lm, a); + + if (ip6_address_is_link_local_unicast (address)) + vec_add1 (link_scope, ai); + else if (ip6_address_is_global_unicast (address)) + vec_add1 (global_scope, ai); + else if (ip6_address_is_local_unicast (address)) + vec_add1 (local_scope, ai); + else + vec_add1 (unknown_scope, ai); + + ai = a->next_this_sw_interface; + } + + if (vec_len (link_scope)) + { + s = format (s, "%ULink-local address(es):\n", format_white_space, 2); + s = ip6_print_addrs (s, link_scope); + vec_free (link_scope); + } + + if (vec_len (local_scope)) + { + s = format (s, "%ULocal unicast address(es):\n", format_white_space, 2); + s = ip6_print_addrs (s, local_scope); + vec_free (local_scope); + } + + if (vec_len (global_scope)) + { + s = format (s, "%UGlobal unicast address(es):\n", + format_white_space, 2); + s = ip6_print_addrs (s, global_scope); + vec_free (global_scope); + } + + if (vec_len (unknown_scope)) + { + s = format (s, "%UOther-scope address(es):\n", format_white_space, 2); + s = ip6_print_addrs (s, unknown_scope); + vec_free (unknown_scope); + } + + s = format (s, "%ULink-local address(es):\n", format_white_space, 2); + s = format (s, "%U%U\n", + format_white_space, 4, format_ip6_address, &il->il_ll_addr); + + /* *INDENT-OFF* */ + FOREACH_IP6_LINK_DELEGATE(ild, il, + ({ + s = format (s, "%U", il_delegate_vfts[ild->ild_type].ildv_format, + ild->ild_index, 2); + })); + /* *INDENT-ON* */ + + return (s); +} + +static clib_error_t * +ip6_link_show (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + const ip6_link_t *il; + vnet_main_t *vnm; + u32 sw_if_index; + + vnm = vnet_get_main (); + sw_if_index = ~0; + + if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) + { + il = ip6_link_get (sw_if_index); + + if (NULL == il) + { + vlib_cli_output (vm, "IP6 disabled"); + return (NULL); + } + else + vlib_cli_output (vm, "%U", format_ip6_link, il); + } + else + { + vec_foreach (il, ip6_links) + vlib_cli_output (vm, "%U", format_ip6_link, il); + } + + return (NULL); +} + +/*? + * This command is used to display various IPv6 attributes on a given + * interface. + * + * @cliexpar + * Example of how to display IPv6 settings: + * @cliexstart{show ip6 interface GigabitEthernet2/0/0} + * GigabitEthernet2/0/0 is admin up + * Link-local address(es): + * fe80::ab8/64 + * Joined group address(es): + * ff02::1 + * ff02::2 + * ff02::16 + * ff02::1:ff00:ab8 + * Advertised Prefixes: + * prefix fe80::fe:28ff:fe9c:75b3, length 64 + * MTU is 1500 + * ICMP error messages are unlimited + * ICMP redirects are disabled + * ICMP unreachables are not sent + * ND DAD is disabled + * ND advertised reachable time is 0 + * ND advertised retransmit interval is 0 (msec) + * ND router advertisements are sent every 200 seconds (min interval is 150) + * ND router advertisements live for 600 seconds + * Hosts use stateless autoconfig for addresses + * ND router advertisements sent 19336 + * ND router solicitations received 0 + * ND router solicitations dropped 0 + * @cliexend + * Example of output if IPv6 is not enabled on the interface: + * @cliexstart{show ip6 interface GigabitEthernet2/0/0} + * show ip6 interface: IPv6 not enabled on interface + * @cliexend +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ip6_link_show_command, static) = +{ + .path = "show ip6 interface", + .function = ip6_link_show, + .short_help = "show ip6 interface <interface>", +}; +/* *INDENT-ON* */ + +static clib_error_t * +enable_ip6_interface_cmd (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + clib_error_t *error = NULL; + u32 sw_if_index; + + sw_if_index = ~0; + + if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) + { + if (ip6_link_enable (sw_if_index)) + error = clib_error_return (0, "Failed\n"); + } + else + { + error = clib_error_return (0, "unknown interface\n'", + format_unformat_error, input); + + } + return error; +} + +/*? + * This command is used to enable IPv6 on a given interface. + * + * @cliexpar + * Example of how enable IPv6 on a given interface: + * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (enable_ip6_interface_command, static) = +{ + .path = "enable ip6 interface", + .function = enable_ip6_interface_cmd, + .short_help = "enable ip6 interface <interface>", +}; +/* *INDENT-ON* */ + +static clib_error_t * +disable_ip6_interface_cmd (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + clib_error_t *error = NULL; + u32 sw_if_index; + + sw_if_index = ~0; + + if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) + { + if (ip6_link_disable (sw_if_index)) + error = clib_error_return (0, "Failed\n"); + } + else + { + error = clib_error_return (0, "unknown interface\n'", + format_unformat_error, input); + + } + return error; +} + +/*? + * This command is used to disable IPv6 on a given interface. + * + * @cliexpar + * Example of how disable IPv6 on a given interface: + * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (disable_ip6_interface_command, static) = +{ + .path = "disable ip6 interface", + .function = disable_ip6_interface_cmd, + .short_help = "disable ip6 interface <interface>", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |