diff options
Diffstat (limited to 'src/vnet/dhcp/dhcp6_ia_na_client_cp.c')
| -rw-r--r-- | src/vnet/dhcp/dhcp6_ia_na_client_cp.c | 837 |
1 files changed, 0 insertions, 837 deletions
diff --git a/src/vnet/dhcp/dhcp6_ia_na_client_cp.c b/src/vnet/dhcp/dhcp6_ia_na_client_cp.c deleted file mode 100644 index e440805d707..00000000000 --- a/src/vnet/dhcp/dhcp6_ia_na_client_cp.c +++ /dev/null @@ -1,837 +0,0 @@ -/* - * 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, ¶ms); - - 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_API_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_API_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; - unformat_input_t _line_input, *line_input = &_line_input; - - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat - (line_input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) - ; - else if (unformat (line_input, "disable")) - enable = 0; - else - { - error = clib_error_return (0, "unexpected input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - unformat_free (line_input); - - 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: - */ |