--- /dev/null
+/*
+ * 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:
+ */
Code Review / vpp.git / blobdiff