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authorJuraj Sloboda <jsloboda@cisco.com>2018-05-04 14:20:06 +0200
committerOle Trøan <otroan@employees.org>2018-06-21 10:03:03 +0000
commitdd3b8f7ab9f120b92c5fdf26016db47bbe18cb39 (patch)
tree6d43daf689e29638fdabb38c66c4357c1c5f491f /src/vnet/dhcp/dhcp6_ia_na_client_cp.c
parent65ce94a1dcafbba684085e1136b3f12c7bdface3 (diff)
Implement DHCPv6 IA NA client (VPP-1094)
Change-Id: I682a47d6cf9975aca6136188d28ee93eaadf4fe3 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
Diffstat (limited to 'src/vnet/dhcp/dhcp6_ia_na_client_cp.c')
-rw-r--r--src/vnet/dhcp/dhcp6_ia_na_client_cp.c831
1 files changed, 831 insertions, 0 deletions
diff --git a/src/vnet/dhcp/dhcp6_ia_na_client_cp.c b/src/vnet/dhcp/dhcp6_ia_na_client_cp.c
new file mode 100644
index 00000000000..e83eecc17c3
--- /dev/null
+++ b/src/vnet/dhcp/dhcp6_ia_na_client_cp.c
@@ -0,0 +1,831 @@
+/*
+ * Copyright (c) 2018 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/vnet.h>
+#include <vlibmemory/api.h>
+#include <vnet/vnet_msg_enum.h>
+#include <vnet/dhcp/dhcp6_packet.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_dp.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/ip6.h>
+#include <float.h>
+#include <math.h>
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_dhcp6_client_cp_msg \
+_(DHCP6_CLIENT_ENABLE_DISABLE, dhcp6_client_enable_disable)
+
+#define vl_api_dhcp6_client_enable_disable_t_print vl_noop_handler
+
+typedef struct
+{
+ u32 sw_if_index;
+ ip6_address_t address;
+ u32 preferred_lt;
+ u32 valid_lt;
+ f64 due_time;
+} address_info_t;
+
+typedef struct
+{
+ u8 enabled;
+ u32 server_index;
+ u32 T1;
+ u32 T2;
+ f64 T1_due_time;
+ f64 T2_due_time;
+ u32 address_count;
+ u8 rebinding;
+} client_state_t;
+
+typedef struct
+{
+ address_info_t *address_pool;
+ client_state_t *client_state_by_sw_if_index;
+ u32 n_clients;
+ f64 max_valid_due_time;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+ api_main_t *api_main;
+ u32 node_index;
+} dhcp6_client_cp_main_t;
+
+static dhcp6_client_cp_main_t dhcp6_client_cp_main;
+
+enum
+{
+ RD_CP_EVENT_INTERRUPT,
+ RD_CP_EVENT_DISABLE,
+};
+
+static void
+send_client_message_start_stop (u32 sw_if_index, u32 server_index,
+ u8 msg_type, address_info_t * address_list,
+ u8 start)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ dhcp6_send_client_message_params_t params = { 0, };
+ dhcp6_send_client_message_params_address_t *addresses = 0, *addr;
+ u32 i;
+
+ ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
+ rm->client_state_by_sw_if_index[sw_if_index].enabled);
+ client_state_t *client_state =
+ &rm->client_state_by_sw_if_index[sw_if_index];
+
+ params.sw_if_index = sw_if_index;
+ params.server_index = server_index;
+ params.msg_type = msg_type;
+ if (start)
+ {
+ if (msg_type == DHCPV6_MSG_SOLICIT)
+ {
+ params.irt = 1;
+ params.mrt = 120;
+ }
+ else if (msg_type == DHCPV6_MSG_REQUEST)
+ {
+ params.irt = 1;
+ params.mrt = 30;
+ params.mrc = 10;
+ }
+ else if (msg_type == DHCPV6_MSG_RENEW)
+ {
+ params.irt = 10;
+ params.mrt = 600;
+ f64 current_time = vlib_time_now (rm->vlib_main);
+ i32 diff_time = client_state->T2 - current_time;
+ if (diff_time < 0)
+ diff_time = 0;
+ params.mrd = diff_time;
+ }
+ else if (msg_type == DHCPV6_MSG_REBIND)
+ {
+ params.irt = 10;
+ params.mrt = 600;
+ f64 current_time = vlib_time_now (rm->vlib_main);
+ i32 diff_time = rm->max_valid_due_time - current_time;
+ if (diff_time < 0)
+ diff_time = 0;
+ params.mrd = diff_time;
+ }
+ else if (msg_type == DHCPV6_MSG_RELEASE)
+ {
+ params.mrc = 1;
+ }
+ }
+
+ params.T1 = 0;
+ params.T2 = 0;
+ if (vec_len (address_list) != 0)
+ vec_validate (addresses, vec_len (address_list) - 1);
+ for (i = 0; i < vec_len (address_list); i++)
+ {
+ address_info_t *address = &address_list[i];
+ addr = &addresses[i];
+ addr->valid_lt = address->valid_lt;
+ addr->preferred_lt = address->preferred_lt;
+ addr->address = address->address;
+ }
+ params.addresses = addresses;
+
+ dhcp6_send_client_message (rm->vlib_main, sw_if_index, !start, &params);
+
+ vec_free (params.addresses);
+}
+
+static void interrupt_process (void);
+
+static u32
+ip6_enable (u32 sw_if_index)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ clib_error_t *rv;
+
+ rv = enable_ip6_interface (rm->vlib_main, sw_if_index);
+
+ return rv != 0;
+}
+
+static u8
+ip6_addresses_equal (ip6_address_t * address1, ip6_address_t * address2)
+{
+ if (address1->as_u64[0] != address2->as_u64[0])
+ return 0;
+ return address1->as_u64[1] == address2->as_u64[1];
+}
+
+static clib_error_t *
+dhcp6_reply_event_handler (vl_api_dhcp6_reply_event_t * mp)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+ client_state_t *client_state;
+ ip6_address_t *address;
+ u32 sw_if_index;
+ u32 n_addresses;
+ vl_api_dhcp6_address_info_t *api_address;
+ u32 inner_status_code;
+ u32 status_code;
+ u32 server_index;
+ f64 current_time;
+ clib_error_t *error = 0;
+ u32 i;
+
+ current_time = vlib_time_now (vm);
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ if (sw_if_index >= vec_len (rm->client_state_by_sw_if_index))
+ return 0;
+
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+
+ if (!client_state->enabled)
+ return 0;
+
+ server_index = ntohl (mp->server_index);
+
+ n_addresses = ntohl (mp->n_addresses);
+
+ inner_status_code = ntohs (mp->inner_status_code);
+ status_code = ntohs (mp->status_code);
+
+ if (mp->msg_type == DHCPV6_MSG_ADVERTISE
+ && client_state->server_index == ~0)
+ {
+ address_info_t *address_list = 0, *address_info;
+
+ if (inner_status_code == DHCPV6_STATUS_NOADDRS_AVAIL)
+ {
+ clib_warning
+ ("Advertise message arrived with NoAddrsAvail status code");
+ return 0;
+ }
+
+ if (n_addresses > 0)
+ vec_validate (address_list, n_addresses - 1);
+ for (i = 0; i < n_addresses; i++)
+ {
+ api_address = &mp->addresses[i];
+ address = (ip6_address_t *) api_address->address;
+
+ address_info = &address_list[i];
+ address_info->address = *address;
+ address_info->preferred_lt = 0;
+ address_info->valid_lt = 0;
+ }
+
+ client_state->server_index = server_index;
+
+ send_client_message_start_stop (sw_if_index, server_index,
+ DHCPV6_MSG_REQUEST, address_list, 1);
+ vec_free (address_list);
+ }
+
+ if (mp->msg_type != DHCPV6_MSG_REPLY)
+ return 0;
+
+ if (!client_state->rebinding && client_state->server_index != server_index)
+ {
+ clib_warning ("Reply message arrived with Server ID different "
+ "from that in Request or Renew message");
+ return 0;
+ }
+
+ if (inner_status_code == DHCPV6_STATUS_NOADDRS_AVAIL)
+ {
+ clib_warning ("Reply message arrived with NoAddrsAvail status code");
+ if (n_addresses > 0)
+ {
+ clib_warning
+ ("Invalid Reply message arrived: It contains NoAddrsAvail "
+ "status code but also contains addresses");
+ return 0;
+ }
+ }
+
+ if (status_code == DHCPV6_STATUS_UNSPEC_FAIL)
+ {
+ clib_warning ("Reply message arrived with UnspecFail status code");
+ return 0;
+ }
+
+ send_client_message_start_stop (sw_if_index, server_index,
+ mp->msg_type, 0, 0);
+
+ for (i = 0; i < n_addresses; i++)
+ {
+ address_info_t *address_info = 0;
+ u32 valid_time;
+ u32 preferred_time;
+
+ api_address = &mp->addresses[i];
+
+ address = (ip6_address_t *) api_address->address;
+
+ if (ip6_address_is_link_local_unicast (address))
+ continue;
+
+ valid_time = ntohl (api_address->valid_time);
+ preferred_time = ntohl (api_address->preferred_time);
+
+ if (preferred_time > valid_time)
+ continue;
+
+ u8 address_already_present = 0;
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index != sw_if_index)
+ ;
+ else if (!ip6_addresses_equal (&address_info->address, address))
+ ;
+ else
+ {
+ address_already_present = 1;
+ goto address_pool_foreach_out;
+ }
+ }));
+ /* *INDENT-ON* */
+ address_pool_foreach_out:
+
+ if (address_already_present)
+ {
+ address_info->preferred_lt = preferred_time;
+ address_info->valid_lt = valid_time;
+ address_info->due_time = current_time + valid_time;
+ if (address_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = address_info->due_time;
+ continue;
+ }
+
+ if (valid_time == 0)
+ continue;
+
+ pool_get (rm->address_pool, address_info);
+ address_info->sw_if_index = sw_if_index;
+ address_info->address = *address;
+ address_info->preferred_lt = preferred_time;
+ address_info->valid_lt = valid_time;
+ address_info->due_time = current_time + valid_time;
+ if (address_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = address_info->due_time;
+ rm->client_state_by_sw_if_index[sw_if_index].address_count++;
+
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address, 64, 0);
+ if (error)
+ clib_warning ("Failed to add interface address");
+ }
+
+ client_state->server_index = server_index;
+ client_state->T1 = ntohl (mp->T1);
+ client_state->T2 = ntohl (mp->T2);
+ if (client_state->T1 != 0)
+ client_state->T1_due_time = current_time + client_state->T1;
+ if (client_state->T2 != 0)
+ client_state->T2_due_time = current_time + client_state->T2;
+ client_state->rebinding = 0;
+
+ interrupt_process ();
+
+ return error;
+}
+
+static address_info_t *
+create_address_list (u32 sw_if_index)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ address_info_t *address_info, *address_list = 0;;
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index == sw_if_index)
+ {
+ u32 pos = vec_len (address_list);
+ vec_validate (address_list, pos);
+ clib_memcpy (&address_list[pos], address_info, sizeof (*address_info));
+ }
+ }));
+ /* *INDENT-ON* */
+
+ return address_list;
+}
+
+VNET_DHCP6_REPLY_EVENT_FUNCTION (dhcp6_reply_event_handler);
+
+static uword
+dhcp6_client_cp_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ address_info_t *address_info;
+ client_state_t *client_state;
+ f64 sleep_time = 1e9;
+ clib_error_t *error;
+ f64 current_time;
+ f64 due_time;
+ uword event_type;
+ uword *event_data = 0;
+ int i;
+
+ while (1)
+ {
+ vlib_process_wait_for_event_or_clock (vm, sleep_time);
+ event_type = vlib_process_get_events (vm, &event_data);
+ vec_reset_length (event_data);
+
+ if (event_type == RD_CP_EVENT_DISABLE)
+ {
+ vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_DISABLED);
+ sleep_time = 1e9;
+ continue;
+ }
+
+ current_time = vlib_time_now (vm);
+ do
+ {
+ due_time = current_time + 1e9;
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->due_time > current_time)
+ {
+ if (address_info->due_time < due_time)
+ due_time = address_info->due_time;
+ }
+ else
+ {
+ u32 sw_if_index = address_info->sw_if_index;
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address,
+ 64, 1);
+ if (error)
+ clib_warning ("Failed to delete interface address");
+ pool_put (rm->address_pool, address_info);
+ /* make sure ip6 stays enabled */
+ ip6_enable (sw_if_index);
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+ if (--client_state->address_count == 0)
+ {
+ client_state->rebinding = 0;
+ client_state->server_index = ~0;
+ send_client_message_start_stop (sw_if_index, ~0,
+ DHCPV6_MSG_SOLICIT,
+ 0, 1);
+ }
+ }
+ }));
+ /* *INDENT-ON* */
+ for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
+ {
+ client_state_t *cs = &rm->client_state_by_sw_if_index[i];
+ if (cs->enabled && cs->server_index != ~0)
+ {
+ if (cs->T2_due_time > current_time)
+ {
+ if (cs->T2_due_time < due_time)
+ due_time = cs->T2_due_time;
+ if (cs->T1_due_time > current_time)
+ {
+ if (cs->T1_due_time < due_time)
+ due_time = cs->T1_due_time;
+ }
+ else
+ {
+ cs->T1_due_time = DBL_MAX;
+ address_info_t *address_list;
+ address_list = create_address_list (i);
+ cs->rebinding = 1;
+ send_client_message_start_stop (i, cs->server_index,
+ DHCPV6_MSG_RENEW,
+ address_list, 1);
+ vec_free (address_list);
+ }
+ }
+ else
+ {
+ cs->T2_due_time = DBL_MAX;
+ address_info_t *address_list;
+ address_list = create_address_list (i);
+ cs->rebinding = 1;
+ send_client_message_start_stop (i, ~0,
+ DHCPV6_MSG_REBIND,
+ address_list, 1);
+ vec_free (address_list);
+ }
+ }
+ }
+ current_time = vlib_time_now (vm);
+ }
+ while (due_time < current_time);
+
+ sleep_time = due_time - current_time;
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcp6_client_cp_process_node) = {
+ .function = dhcp6_client_cp_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "dhcp6-client-cp-process",
+};
+/* *INDENT-ON* */
+
+static void
+interrupt_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+
+ vlib_process_signal_event (vm, dhcp6_client_cp_process_node.index,
+ RD_CP_EVENT_INTERRUPT, 0);
+}
+
+static void
+disable_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+
+ vlib_process_signal_event (vm, dhcp6_client_cp_process_node.index,
+ RD_CP_EVENT_DISABLE, 0);
+}
+
+static void
+enable_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+ vlib_node_t *node;
+
+ node = vec_elt (vm->node_main.nodes, rm->node_index);
+
+ vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_POLLING);
+ vlib_start_process (vm, node->runtime_index);
+}
+
+static clib_error_t *
+dhcp6_addresses_show_command_function (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *dm = &dhcp6_client_cp_main;
+ clib_error_t *error = 0;
+ address_info_t *address_info;
+ f64 current_time = vlib_time_now (vm);
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, dm->address_pool,
+ ({
+ vlib_cli_output (vm, "address: %U, "
+ "preferred lifetime: %u, valid lifetime: %u "
+ "(%f remaining)",
+ format_ip6_address, &address_info->address,
+ address_info->preferred_lt, address_info->valid_lt,
+ address_info->due_time - current_time);
+ }));
+ /* *INDENT-ON* */
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_addresses_show_command, static) = {
+ .path = "show dhcp6 addresses",
+ .short_help = "show dhcp6 addresses",
+ .function = dhcp6_addresses_show_command_function,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+dhcp6_clients_show_command_function (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ clib_error_t *error = 0;
+ client_state_t *cs;
+ f64 current_time = vlib_time_now (vm);
+ char buf1[256];
+ char buf2[256];
+ const char *rebinding;
+ u32 i;
+
+ for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
+ {
+ cs = &rm->client_state_by_sw_if_index[i];
+ if (cs->enabled)
+ {
+ if (cs->T1_due_time != DBL_MAX && cs->T1_due_time > current_time)
+ {
+ sprintf (buf1, "%u remaining",
+ (u32) round (cs->T1_due_time - current_time));
+ }
+ else
+ sprintf (buf1, "timeout");
+ if (cs->T2_due_time != DBL_MAX && cs->T2_due_time > current_time)
+ sprintf (buf2, "%u remaining",
+ (u32) round (cs->T2_due_time - current_time));
+ else
+ sprintf (buf2, "timeout");
+ if (cs->rebinding)
+ rebinding = ", REBINDING";
+ else
+ rebinding = "";
+ if (cs->T1)
+ vlib_cli_output (vm,
+ "sw_if_index: %u, T1: %u (%s), "
+ "T2: %u (%s), server index: %d%s", i,
+ cs->T1, buf1, cs->T2, buf2,
+ cs->server_index, rebinding);
+ else
+ vlib_cli_output (vm, "sw_if_index: %u%s", i, rebinding);
+ }
+ }
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_clients_show_command, static) = {
+ .path = "show dhcp6 clients",
+ .short_help = "show dhcp6 clients",
+ .function = dhcp6_clients_show_command_function,
+};
+/* *INDENT-ON* */
+
+static int
+dhcp6_client_enable_disable (u32 sw_if_index, u8 enable)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vnet_main_t *vnm = rm->vnet_main;
+ vlib_main_t *vm = rm->vlib_main;
+ client_state_t *client_state;
+ client_state_t empty_config = { 0 };
+ address_info_t *address_info;
+ clib_error_t *error;
+
+ if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
+ {
+ clib_warning ("Invalid sw_if_index");
+ return 1;
+ }
+
+ vec_validate_init_empty (rm->client_state_by_sw_if_index, sw_if_index,
+ empty_config);
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+
+ u8 old_enabled = client_state->enabled;
+ if (enable)
+ client_state->enabled = 1;
+ client_state->server_index = ~0;
+
+ if (!old_enabled && enable)
+ {
+ rm->n_clients++;
+ if (rm->n_clients == 1)
+ {
+ enable_process ();
+ dhcp6_clients_enable_disable (1);
+ }
+
+ ip6_enable (sw_if_index);
+ send_client_message_start_stop (sw_if_index, ~0, DHCPV6_MSG_SOLICIT,
+ 0, 1);
+ }
+ else if (old_enabled && !enable)
+ {
+ send_client_message_start_stop (sw_if_index, ~0, ~0, 0, 0);
+
+ rm->n_clients--;
+ if (rm->n_clients == 0)
+ {
+ dhcp6_clients_enable_disable (0);
+ disable_process ();
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index == sw_if_index)
+ {
+ ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
+ rm->client_state_by_sw_if_index[sw_if_index].enabled);
+ client_state_t *client_state =
+ &rm->client_state_by_sw_if_index[sw_if_index];
+ send_client_message_start_stop (sw_if_index,
+ client_state->server_index,
+ DHCPV6_MSG_RELEASE, address_info,
+ 1);
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address,
+ 64, 1);
+ if (error)
+ clib_warning ("Failed to delete interface address");
+ pool_put (rm->address_pool, address_info);
+ }
+ }));
+ /* *INDENT-ON* */
+ }
+
+ if (!enable)
+ client_state->enabled = 0;
+
+ return 0;
+}
+
+static clib_error_t *
+dhcp6_client_enable_disable_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vnet_main_t *vnm = rm->vnet_main;
+ clib_error_t *error = 0;
+ u32 sw_if_index = ~0;
+ u8 enable = 1;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat
+ (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (input, "disable"))
+ enable = 0;
+ else
+ {
+ error = clib_error_return (0, "unexpected input `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+ }
+
+ if (sw_if_index != ~0)
+ {
+ if (dhcp6_client_enable_disable (sw_if_index, enable) != 0)
+ error = clib_error_return (0, "Invalid sw_if_index");
+ }
+ else
+ error = clib_error_return (0, "Missing sw_if_index");
+
+done:
+ return error;
+}
+
+/*?
+ * This command is used to enable/disable DHCPv6 client
+ * on particular interface.
+ *
+ * @cliexpar
+ * @parblock
+ * Example of how to enable DHCPv6 client:
+ * @cliexcmd{dhcp6 client GigabitEthernet2/0/0}
+ * Example of how to disable DHCPv6 client:
+ * @cliexcmd{dhcp6 client GigabitEthernet2/0/0 disable}
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_client_enable_disable_command, static) = {
+ .path = "dhcp6 client",
+ .short_help = "dhcp6 client <interface> [disable]",
+ .function = dhcp6_client_enable_disable_command_fn,
+};
+/* *INDENT-ON* */
+
+static void
+ vl_api_dhcp6_client_enable_disable_t_handler
+ (vl_api_dhcp6_client_enable_disable_t * mp)
+{
+ vl_api_dhcp6_client_enable_disable_reply_t *rmp;
+ u32 sw_if_index;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ rv = dhcp6_client_enable_disable (sw_if_index, mp->enable);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_SW_INTERFACE_SET_TABLE_REPLY);
+}
+
+#define vl_msg_name_crc_list
+#include <vnet/dhcp/dhcp6_ia_na_client_cp.api.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+ foreach_vl_msg_name_crc_dhcp6_ia_na_client_cp;
+#undef _
+}
+
+static clib_error_t *
+dhcp_client_cp_init (vlib_main_t * vm)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ api_main_t *am = &api_main;
+
+ rm->vlib_main = vm;
+ rm->vnet_main = vnet_get_main ();
+ rm->api_main = am;
+ rm->node_index = dhcp6_client_cp_process_node.index;
+
+#define _(N,n) \
+ vl_msg_api_set_handlers(VL_API_##N, #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 0/* do NOT trace! */);
+ foreach_dhcp6_client_cp_msg;
+#undef _
+
+ /*
+ * Set up the (msg_name, crc, message-id) table
+ */
+ setup_message_id_table (am);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (dhcp_client_cp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */