diff options
Diffstat (limited to 'src/vnet/dhcp/dhcp6_pd_client_cp.c')
| -rw-r--r-- | src/vnet/dhcp/dhcp6_pd_client_cp.c | 1414 |
1 files changed, 0 insertions, 1414 deletions
diff --git a/src/vnet/dhcp/dhcp6_pd_client_cp.c b/src/vnet/dhcp/dhcp6_pd_client_cp.c deleted file mode 100644 index cc538a78ab1..00000000000 --- a/src/vnet/dhcp/dhcp6_pd_client_cp.c +++ /dev/null @@ -1,1414 +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_pd_client_dp.h> -#include <vnet/ip/ip.h> -#include <vnet/ip/ip6.h> -#include <float.h> -#include <math.h> -#include <string.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_pd_client_cp_msg \ -_(DHCP6_PD_CLIENT_ENABLE_DISABLE, dhcp6_pd_client_enable_disable) \ -_(IP6_ADD_DEL_ADDRESS_USING_PREFIX, ip6_add_del_address_using_prefix) - -#define vl_api_dhcp6_pd_client_enable_disable_t_print vl_noop_handler -#define vl_api_ip6_add_del_address_using_prefix_t_print vl_noop_handler - -typedef struct -{ - u32 prefix_group_index; - uword opaque_data; // used by prefix publisher - ip6_address_t prefix; - u8 prefix_length; - u32 preferred_lt; - u32 valid_lt; - f64 due_time; -} prefix_info_t; - -typedef struct -{ - u8 enabled; - u32 prefix_group_index; - u32 server_index; - u32 T1; - u32 T2; - f64 T1_due_time; - f64 T2_due_time; - u32 prefix_count; - u8 rebinding; -} client_state_t; - -typedef struct -{ - client_state_t *client_state_by_sw_if_index; - clib_bitmap_t *prefix_ownership_bitmap; - 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_pd_client_cp_main_t; - -static dhcp6_pd_client_cp_main_t dhcp6_pd_client_cp_main; - -typedef struct -{ - prefix_info_t *prefix_pool; - const u8 **prefix_group_name_by_index; -} ip6_prefix_main_t; - -static ip6_prefix_main_t ip6_prefix_main; - -typedef struct -{ - /* config */ - u32 sw_if_index; - u32 prefix_group_index; - ip6_address_t address; - u8 prefix_length; - - /* state */ - u8 configured_in_data_plane; -} ip6_address_info_t; - -typedef struct -{ - ip6_address_info_t *addresses; - u32 *active_prefix_index_by_prefix_group_index; -} ip6_address_with_prefix_main_t; - -static ip6_address_with_prefix_main_t ip6_address_with_prefix_main; - -enum -{ - DHCPV6_PD_EVENT_INTERRUPT, - DHCPV6_PD_EVENT_DISABLE, -}; - -static_always_inline u32 -active_prefix_index_by_prefix_group_index_get (u32 prefix_group_index) -{ - ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main; - - if (prefix_group_index >= - vec_len (apm->active_prefix_index_by_prefix_group_index)) - return ~0; - - return apm->active_prefix_index_by_prefix_group_index[prefix_group_index]; -} - -static_always_inline void -active_prefix_index_by_prefix_group_index_set (u32 prefix_group_index, - u32 prefix_index) -{ - ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main; - static const u32 empty = ~0; - - ASSERT (prefix_group_index != ~0); - - if (prefix_index == ~0 - && prefix_group_index >= - vec_len (apm->active_prefix_index_by_prefix_group_index)) - return; - - vec_validate_init_empty (apm->active_prefix_index_by_prefix_group_index, - prefix_group_index, empty); - apm->active_prefix_index_by_prefix_group_index[prefix_group_index] = - prefix_index; -} - -static_always_inline u8 -is_dhcpv6_pd_prefix (prefix_info_t * prefix_info) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - u32 prefix_index; - - prefix_index = prefix_info - pm->prefix_pool; - return clib_bitmap_get (rm->prefix_ownership_bitmap, prefix_index); -} - -static_always_inline void -set_is_dhcpv6_pd_prefix (prefix_info_t * prefix_info, u8 value) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - u32 prefix_index; - - prefix_index = prefix_info - pm->prefix_pool; - rm->prefix_ownership_bitmap = - clib_bitmap_set (rm->prefix_ownership_bitmap, prefix_index, value); -} - -static void -cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add); - -static void -notify_prefix_add_del (u32 prefix_index, u8 is_add) -{ - // TODO: use registries - cp_ip6_address_prefix_add_del_handler (prefix_index, is_add); -} - -static void -send_client_message_start_stop (u32 sw_if_index, u32 server_index, - u8 msg_type, prefix_info_t * prefix_list, - u8 start) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - dhcp6_pd_send_client_message_params_t params = { 0, }; - dhcp6_pd_send_client_message_params_prefix_t *prefixes = 0, *pref; - 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 (prefix_list) != 0) - vec_validate (prefixes, vec_len (prefix_list) - 1); - for (i = 0; i < vec_len (prefix_list); i++) - { - prefix_info_t *prefix = &prefix_list[i]; - pref = &prefixes[i]; - pref->valid_lt = prefix->valid_lt; - pref->preferred_lt = prefix->preferred_lt; - pref->prefix = prefix->prefix; - pref->prefix_length = prefix->prefix_length; - } - params.prefixes = prefixes; - - dhcp6_pd_send_client_message (rm->vlib_main, sw_if_index, !start, ¶ms); - - vec_free (params.prefixes); -} - -static void interrupt_process (void); - -static u32 -ip6_enable (u32 sw_if_index) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - clib_error_t *rv; - - rv = enable_ip6_interface (rm->vlib_main, sw_if_index); - - return rv != 0; -} - -static u8 -ip6_prefixes_equal (ip6_address_t * prefix1, ip6_address_t * prefix2, u8 len) -{ - if (len >= 64) - { - if (prefix1->as_u64[0] != prefix2->as_u64[0]) - return 0; - if (len == 64) - return 1; - return clib_net_to_host_u64 (prefix1->as_u64[1]) >> (128 - len) == - clib_net_to_host_u64 (prefix2->as_u64[1]) >> (128 - len); - } - return clib_net_to_host_u64 (prefix1->as_u64[0]) >> (64 - len) == - clib_net_to_host_u64 (prefix2->as_u64[0]) >> (64 - len); -} - -static clib_error_t * -dhcp6_pd_reply_event_handler (vl_api_dhcp6_pd_reply_event_t * mp) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - vlib_main_t *vm = rm->vlib_main; - client_state_t *client_state; - ip6_address_t *prefix; - u32 sw_if_index; - u32 n_prefixes; - vl_api_dhcp6_pd_prefix_info_t *api_prefix; - 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_prefixes = ntohl (mp->n_prefixes); - - 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) - { - prefix_info_t *prefix_list = 0, *prefix_info; - u8 prefix_length; - - if (inner_status_code == DHCPV6_STATUS_NOPREFIX_AVAIL) - { - clib_warning - ("Advertise message arrived with NoPrefixAvail status code"); - return 0; - } - - if (n_prefixes > 0) - vec_validate (prefix_list, n_prefixes - 1); - for (i = 0; i < n_prefixes; i++) - { - api_prefix = &mp->prefixes[i]; - prefix = (ip6_address_t *) api_prefix->prefix.address; - prefix_length = api_prefix->prefix.len; - - prefix_info = &prefix_list[i]; - prefix_info->prefix = *prefix; - prefix_info->prefix_length = prefix_length; - prefix_info->preferred_lt = 0; - prefix_info->valid_lt = 0; - } - - client_state->server_index = server_index; - - send_client_message_start_stop (sw_if_index, server_index, - DHCPV6_MSG_REQUEST, prefix_list, 1); - vec_free (prefix_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_NOPREFIX_AVAIL) - { - clib_warning ("Reply message arrived with NoPrefixAvail status code"); - if (n_prefixes > 0) - { - clib_warning - ("Invalid Reply message arrived: It contains NoPrefixAvail " - "status code but also contains prefixes"); - 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_prefixes; i++) - { - prefix_info_t *prefix_info = 0; - u8 prefix_length; - u32 valid_time; - u32 preferred_time; - - api_prefix = &mp->prefixes[i]; - - prefix = (ip6_address_t *) api_prefix->prefix.address; - prefix_length = api_prefix->prefix.len; - - if (ip6_address_is_link_local_unicast (prefix)) - continue; - - valid_time = ntohl (api_prefix->valid_time); - preferred_time = ntohl (api_prefix->preferred_time); - prefix_length = api_prefix->prefix.len; - - if (preferred_time > valid_time) - continue; - - u8 address_prefix_present = 0; - /* *INDENT-OFF* */ - pool_foreach (prefix_info, pm->prefix_pool, - ({ - if (is_dhcpv6_pd_prefix (prefix_info) && - prefix_info->opaque_data == sw_if_index && - prefix_info->prefix_length == prefix_length && - ip6_prefixes_equal (&prefix_info->prefix, prefix, prefix_length)) - { - address_prefix_present = 1; - goto prefix_pool_foreach_out; - } - })); - /* *INDENT-ON* */ - prefix_pool_foreach_out: - - if (address_prefix_present) - { - prefix_info->preferred_lt = preferred_time; - prefix_info->valid_lt = valid_time; - prefix_info->due_time = current_time + valid_time; - if (prefix_info->due_time > rm->max_valid_due_time) - rm->max_valid_due_time = prefix_info->due_time; - continue; - } - - if (valid_time == 0) - continue; - - pool_get (pm->prefix_pool, prefix_info); - prefix_info->prefix_group_index = client_state->prefix_group_index; - set_is_dhcpv6_pd_prefix (prefix_info, 1); - prefix_info->opaque_data = sw_if_index; - prefix_info->prefix_length = prefix_length; - prefix_info->prefix = *prefix; - prefix_info->preferred_lt = preferred_time; - prefix_info->valid_lt = valid_time; - prefix_info->due_time = current_time + valid_time; - if (prefix_info->due_time > rm->max_valid_due_time) - rm->max_valid_due_time = prefix_info->due_time; - rm->client_state_by_sw_if_index[sw_if_index].prefix_count++; - - u32 prefix_index = prefix_info - pm->prefix_pool; - notify_prefix_add_del (prefix_index, 1); - } - - 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 prefix_info_t * -create_prefix_list (u32 sw_if_index) -{ - ip6_prefix_main_t *pm = &ip6_prefix_main; - prefix_info_t *prefix_info, *prefix_list = 0;; - - /* *INDENT-OFF* */ - pool_foreach (prefix_info, pm->prefix_pool, - ({ - if (is_dhcpv6_pd_prefix (prefix_info) && - prefix_info->opaque_data == sw_if_index) - { - u32 pos = vec_len (prefix_list); - vec_validate (prefix_list, pos); - clib_memcpy (&prefix_list[pos], prefix_info, sizeof (*prefix_info)); - } - })); - /* *INDENT-ON* */ - - return prefix_list; -} - -VNET_DHCP6_PD_REPLY_EVENT_FUNCTION (dhcp6_pd_reply_event_handler); - -static uword -dhcp6_pd_client_cp_process (vlib_main_t * vm, vlib_node_runtime_t * rt, - vlib_frame_t * f) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - prefix_info_t *prefix_info; - client_state_t *client_state; - f64 sleep_time = 1e9; - 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 == DHCPV6_PD_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 (prefix_info, pm->prefix_pool, - ({ - if (is_dhcpv6_pd_prefix (prefix_info)) - { - if (prefix_info->due_time > current_time) - { - if (prefix_info->due_time < due_time) - due_time = prefix_info->due_time; - } - else - { - u32 prefix_index = prefix_info - pm->prefix_pool; - notify_prefix_add_del (prefix_index, 0); - u32 sw_if_index = prefix_info->opaque_data; - set_is_dhcpv6_pd_prefix (prefix_info, 0); - pool_put (pm->prefix_pool, prefix_info); - client_state = &rm->client_state_by_sw_if_index[sw_if_index]; - if (--client_state->prefix_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; - prefix_info_t *prefix_list; - prefix_list = create_prefix_list (i); - send_client_message_start_stop (i, cs->server_index, - DHCPV6_MSG_RENEW, - prefix_list, 1); - vec_free (prefix_list); - } - } - else - { - cs->T2_due_time = DBL_MAX; - prefix_info_t *prefix_list; - prefix_list = create_prefix_list (i); - cs->rebinding = 1; - send_client_message_start_stop (i, ~0, - DHCPV6_MSG_REBIND, - prefix_list, 1); - vec_free (prefix_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_pd_client_cp_process_node) = { - .function = dhcp6_pd_client_cp_process, - .type = VLIB_NODE_TYPE_PROCESS, - .name = "dhcp6-pd-client-cp-process", -}; -/* *INDENT-ON* */ - -static void -interrupt_process (void) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - vlib_main_t *vm = rm->vlib_main; - - vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index, - DHCPV6_PD_EVENT_INTERRUPT, 0); -} - -static void -disable_process (void) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - vlib_main_t *vm = rm->vlib_main; - - vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index, - DHCPV6_PD_EVENT_DISABLE, 0); -} - -static void -enable_process (void) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_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 u32 -cp_ip6_construct_address (ip6_address_info_t * address_info, u32 prefix_index, - ip6_address_t * r_addr) -{ - ip6_prefix_main_t *pm = &ip6_prefix_main; - prefix_info_t *prefix; - u64 mask, addr0, pref; - - addr0 = clib_net_to_host_u64 (address_info->address.as_u64[0]); - prefix = &pm->prefix_pool[prefix_index]; - if (prefix->prefix_length > 64) - { - clib_warning ("Prefix length is bigger that 64 bits"); - return 1; - } - mask = ((u64) 1 << (64 - prefix->prefix_length)) - 1; - addr0 &= mask; - pref = clib_host_to_net_u64 (prefix->prefix.as_u64[0]); - pref &= ~mask; - addr0 |= pref; - r_addr->as_u64[0] = clib_host_to_net_u64 (addr0); - r_addr->as_u64[1] = address_info->address.as_u64[1]; - - return 0; -} - -static void -cp_ip6_address_add_del_now (ip6_address_info_t * address_info, u8 is_add) -{ - vlib_main_t *vm = vlib_get_main (); - u32 prefix_index; - ip6_address_t addr; - clib_error_t *error; - - if (address_info->prefix_group_index != ~0) - prefix_index = - active_prefix_index_by_prefix_group_index_get - (address_info->prefix_group_index); - else - prefix_index = ~0; - - if (is_add && !address_info->configured_in_data_plane) - { - if (prefix_index != ~0) - { - if (cp_ip6_construct_address (address_info, prefix_index, &addr) != - 0) - return; - error = - ip6_add_del_interface_address (vm, address_info->sw_if_index, - &addr, address_info->prefix_length, - 0 /* add */ ); - if (error) - clib_warning ("Failed adding IPv6 address: %U", - format_clib_error, error); - else - address_info->configured_in_data_plane = 1; - } - else - { - if (address_info->prefix_group_index == ~0) - { - error = - ip6_add_del_interface_address (vm, address_info->sw_if_index, - &address_info->address, - address_info->prefix_length, - 0 /* add */ ); - if (error) - clib_warning ("Failed adding IPv6 address: %U", - format_clib_error, error); - else - address_info->configured_in_data_plane = 1; - } - } - } - else if (!is_add && address_info->configured_in_data_plane) - { - if (prefix_index == ~0) - { - if (address_info->prefix_group_index == ~0) - { - error = - ip6_add_del_interface_address (vm, address_info->sw_if_index, - &address_info->address, - address_info->prefix_length, - 1 /* del */ ); - if (error) - clib_warning ("Failed deleting IPv6 address: %U", - format_clib_error, error); - address_info->configured_in_data_plane = 0; - } - else - clib_warning ("Deleting address with prefix " - "but active prefix index is not set"); - } - else - { - if (cp_ip6_construct_address (address_info, prefix_index, &addr) != - 0) - return; - error = - ip6_add_del_interface_address (vm, address_info->sw_if_index, - &addr, address_info->prefix_length, - 1 /* del */ ); - if (error) - clib_warning ("Failed deleting IPv6 address: %U", - format_clib_error, error); - address_info->configured_in_data_plane = 0; - } - } -} - -static u32 -cp_ip6_address_find_new_active_prefix (u32 prefix_group_index, - u32 ignore_prefix_index) -{ - ip6_prefix_main_t *pm = &ip6_prefix_main; - prefix_info_t *prefix_info; - - /* *INDENT-OFF* */ - pool_foreach (prefix_info, pm->prefix_pool, - ({ - if (prefix_info->prefix_group_index == prefix_group_index && - prefix_info - pm->prefix_pool != ignore_prefix_index) - return prefix_info - pm->prefix_pool; - })); - /* *INDENT-ON* */ - return ~0; -} - -static void -cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add) -{ - ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - ip6_address_info_t *address_info; - prefix_info_t *prefix; - u32 new_prefix_index; - u32 prefix_group_index; - u32 i; - - prefix = &pm->prefix_pool[prefix_index]; - prefix_group_index = prefix->prefix_group_index; - - if (is_add) - { - if (active_prefix_index_by_prefix_group_index_get - (prefix_group_index) == ~0) - { - active_prefix_index_by_prefix_group_index_set - (prefix_group_index, prefix_index); - for (i = 0; i < vec_len (apm->addresses); i++) - { - address_info = &apm->addresses[i]; - if (address_info->prefix_group_index == prefix_group_index) - cp_ip6_address_add_del_now (address_info, 1 /* add */ ); - } - } - } - else - { - if (active_prefix_index_by_prefix_group_index_get - (prefix_group_index) == prefix_index) - { - for (i = 0; i < vec_len (apm->addresses); i++) - { - address_info = &apm->addresses[i]; - if (address_info->prefix_group_index == prefix_group_index) - cp_ip6_address_add_del_now (address_info, 0 /* del */ ); - } - active_prefix_index_by_prefix_group_index_set - (prefix_group_index, ~0); - new_prefix_index = - cp_ip6_address_find_new_active_prefix (prefix_group_index, - prefix_index); - if (new_prefix_index != ~0) - { - active_prefix_index_by_prefix_group_index_set - (prefix_group_index, new_prefix_index); - for (i = 0; i < vec_len (apm->addresses); i++) - { - address_info = &apm->addresses[i]; - if (address_info->prefix_group_index == prefix_group_index) - cp_ip6_address_add_del_now (address_info, 1 /* add */ ); - } - } - } - } -} - -static u32 -prefix_group_find_or_create (const u8 * name, u8 create) -{ - ip6_prefix_main_t *pm = &ip6_prefix_main; - u32 free_index = ~0; - u8 *name_dup; - u32 i; - - for (i = 0; i < vec_len (pm->prefix_group_name_by_index); i++) - { - if (pm->prefix_group_name_by_index[i] == 0) - free_index = i; - else if (0 == - strcmp ((const char *) pm->prefix_group_name_by_index[i], - (const char *) name)) - return i; - } - if (!create) - return ~0; - name_dup = (u8 *) strdup ((const char *) name); - if (free_index != ~0) - { - pm->prefix_group_name_by_index[free_index] = name_dup; - return free_index; - } - else - { - vec_add1 (pm->prefix_group_name_by_index, name_dup); - return vec_len (pm->prefix_group_name_by_index) - 1; - } -} - -static int -cp_ip6_address_add_del (u32 sw_if_index, const u8 * prefix_group, - ip6_address_t address, u8 prefix_length, u8 is_add) -{ - - ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main; - vnet_main_t *vnm = vnet_get_main (); - ip6_address_info_t *address_info; - u32 prefix_group_index; - u32 n; - - if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index)) - { - clib_warning ("Invalid sw_if_index"); - return VNET_API_ERROR_INVALID_VALUE; - } - - if (prefix_group != 0 && prefix_group[0] != '\0') - { - if (strnlen ((const char *) prefix_group, 64) == 64) - return VNET_API_ERROR_INVALID_VALUE; - - prefix_group_index = prefix_group_find_or_create (prefix_group, 1); - } - else - prefix_group_index = ~0; - - n = vec_len (apm->addresses); - - vec_foreach (address_info, apm->addresses) - { - if (address_info->sw_if_index == sw_if_index && - address_info->prefix_group_index == prefix_group_index && - address_info->prefix_length == prefix_length && - 0 == memcmp (&address_info->address, &address, 16)) - { - if (is_add) - return VNET_API_ERROR_DUPLICATE_IF_ADDRESS; - cp_ip6_address_add_del_now (address_info, 0 /* del */ ); - *address_info = apm->addresses[n - 1]; - _vec_len (apm->addresses) = n - 1; - return 0; - } - } - - if (!is_add) - return VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE; - - vec_validate (apm->addresses, n); - address_info = &apm->addresses[n]; - address_info->sw_if_index = sw_if_index; - address_info->prefix_group_index = prefix_group_index; - address_info->address = address; - address_info->prefix_length = prefix_length; - cp_ip6_address_add_del_now (address_info, 1 /* add */ ); - - return 0; -} - -static void - vl_api_ip6_add_del_address_using_prefix_t_handler - (vl_api_ip6_add_del_address_using_prefix_t * mp) -{ - vl_api_ip6_add_del_address_using_prefix_reply_t *rmp; - u32 sw_if_index; - ip6_address_t address; - u8 prefix_length; - int rv = 0; - - VALIDATE_SW_IF_INDEX (mp); - - sw_if_index = ntohl (mp->sw_if_index); - - memcpy (address.as_u8, mp->address, 16); - prefix_length = mp->prefix_length; - - rv = - cp_ip6_address_add_del (sw_if_index, mp->prefix_group, address, - prefix_length, mp->is_add); - - BAD_SW_IF_INDEX_LABEL; - - REPLY_MACRO (VL_API_IP6_ADD_DEL_ADDRESS_USING_PREFIX_REPLY); -} - -static clib_error_t * -cp_ip6_address_add_del_command_function (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *error = 0; - u32 sw_if_index = ~0; - u8 *prefix_group = 0; - ip6_address_t address; - u32 prefix_length; - u8 address_set = 0; - u8 add = 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, "prefix group %s", &prefix_group)); - else - if (unformat (line_input, "%U/%d", unformat_ip6_address, - &address, &prefix_length)) - address_set = 1; - else if (unformat (line_input, "del")) - add = 0; - else - { - error = clib_error_return (0, "unexpected input `%U'", - format_unformat_error, line_input); - unformat_free (line_input); - goto done; - } - } - - unformat_free (line_input); - - if (sw_if_index == ~0) - error = clib_error_return (0, "Missing sw_if_index"); - else if (address_set == 0) - error = clib_error_return (0, "Missing address"); - else - { - if (cp_ip6_address_add_del - (sw_if_index, prefix_group, address, prefix_length, add) != 0) - error = clib_error_return (0, "Error adding or removing address"); - } - -done: - return error; -} - -/*? - * This command is used to add/delete IPv6 address - * potentially using available prefix from specified prefix group - * - * @cliexpar - * @parblock - * Example of how to add IPv6 address: - * @cliexcmd{set ip6 address GigabitEthernet2/0/0 - * prefix group my-prefix-group ::7/64} - * Example of how to delete IPv6 address: - * @cliexcmd{set ip6 address GigabitEthernet2/0/0 - * prefix group my-prefix-group ::7/64 del} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip6_address_add_del_command, static) = { - .path = "set ip6 address", - .short_help = "set ip6 address <interface> [prefix group <string>] " - "<address> [del]", - .function = cp_ip6_address_add_del_command_function, -}; -/* *INDENT-ON* */ - -static clib_error_t * -cp_ip6_addresses_show_command_function (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - ip6_address_info_t *address_info; - const u8 *prefix_group; - clib_error_t *error = 0; - int i; - - for (i = 0; i < vec_len (apm->addresses); i++) - { - address_info = &apm->addresses[i]; - if (address_info->prefix_group_index == ~0) - prefix_group = (const u8 *) "NONE"; - else - prefix_group = - pm->prefix_group_name_by_index[address_info->prefix_group_index]; - vlib_cli_output (vm, - "sw_if_index: %u, prefix_group: %s, address: %U/%d", - address_info->sw_if_index, prefix_group, - format_ip6_address, &address_info->address, - address_info->prefix_length); - } - - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip6_addresses_show_command, static) = { - .path = "show ip6 addresses", - .short_help = "show ip6 addresses", - .function = cp_ip6_addresses_show_command_function, -}; -/* *INDENT-ON* */ - -static clib_error_t * -cp_ip6_prefixes_show_command_function (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - ip6_prefix_main_t *pm = &ip6_prefix_main; - clib_error_t *error = 0; - prefix_info_t *prefix_info; - const u8 *prefix_group; - f64 current_time = vlib_time_now (vm); - - /* *INDENT-OFF* */ - pool_foreach (prefix_info, pm->prefix_pool, - ({ - prefix_group = - pm->prefix_group_name_by_index[prefix_info->prefix_group_index]; - vlib_cli_output (vm, "opaque_data: %lu, prefix: %U/%d, prefix group: %s, " - "preferred lifetime: %u, valid lifetime: %u " - "(%f remaining)", - prefix_info->opaque_data, format_ip6_address, - &prefix_info->prefix, prefix_info->prefix_length, - prefix_group, - prefix_info->preferred_lt, prefix_info->valid_lt, - prefix_info->due_time - current_time); - })); - /* *INDENT-ON* */ - - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip6_prefixes_show_command, static) = { - .path = "show ip6 prefixes", - .short_help = "show ip6 prefixes", - .function = cp_ip6_prefixes_show_command_function, -}; -/* *INDENT-ON* */ - -static clib_error_t * -ip6_pd_clients_show_command_function (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - clib_error_t *error = 0; - client_state_t *cs; - f64 current_time = vlib_time_now (vm); - const u8 *prefix_group; - 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 = ""; - prefix_group = - pm->prefix_group_name_by_index[cs->prefix_group_index]; - if (cs->T1) - vlib_cli_output (vm, - "sw_if_index: %u, prefix group: %s, T1: %u (%s), " - "T2: %u (%s), server index: %d%s", i, - prefix_group, cs->T1, buf1, cs->T2, buf2, - cs->server_index, rebinding); - else - vlib_cli_output (vm, "sw_if_index: %u, prefix group: %s%s", i, - prefix_group, rebinding); - } - } - - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip6_pd_clients_show_command, static) = { - .path = "show ip6 pd clients", - .short_help = "show ip6 pd clients", - .function = ip6_pd_clients_show_command_function, -}; -/* *INDENT-ON* */ - -static int -dhcp6_pd_client_enable_disable (u32 sw_if_index, const u8 * prefix_group, - u8 enable) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - ip6_prefix_main_t *pm = &ip6_prefix_main; - vnet_main_t *vnm = rm->vnet_main; - client_state_t *client_state; - static client_state_t empty_config = { - 0 - }; - prefix_info_t *prefix_info; - prefix_info_t *prefix_list = 0; - u32 prefix_group_index; - - if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index)) - { - clib_warning ("Invalid sw_if_index"); - return VNET_API_ERROR_INVALID_VALUE; - } - - 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) - { - if (strnlen ((const char *) prefix_group, 64) == 64 - || prefix_group[0] == '\0') - return VNET_API_ERROR_INVALID_VALUE; - prefix_group_index = - prefix_group_find_or_create (prefix_group, !old_enabled); - if (old_enabled - && prefix_group_index != client_state->prefix_group_index) - return VNET_API_ERROR_INVALID_VALUE; - } - - if (!old_enabled && enable) - { - client_state->enabled = 1; - client_state->prefix_group_index = prefix_group_index; - ASSERT (client_state->prefix_group_index != ~0); - client_state->server_index = ~0; - - 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 (); - } - - vec_validate (prefix_list, 0); - - /* *INDENT-OFF* */ - pool_foreach (prefix_info, pm->prefix_pool, - ({ - if (is_dhcpv6_pd_prefix (prefix_info) && - prefix_info->opaque_data == 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]; - prefix_list[0] = *prefix_info; - send_client_message_start_stop (sw_if_index, - client_state->server_index, - DHCPV6_MSG_RELEASE, prefix_list, - 1); - u32 prefix_index = prefix_info - pm->prefix_pool; - notify_prefix_add_del (prefix_index, 0); - set_is_dhcpv6_pd_prefix (prefix_info, 0); - pool_put (pm->prefix_pool, prefix_info); - } - })); - /* *INDENT-ON* */ - - vec_free (prefix_list); - - clib_memset (client_state, 0, sizeof (*client_state)); - } - - return 0; -} - -static clib_error_t * -dhcp6_pd_client_enable_disable_command_fn (vlib_main_t * - vm, - unformat_input_t - * input, vlib_cli_command_t * cmd) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main; - vnet_main_t *vnm = rm->vnet_main; - clib_error_t *error = 0; - u8 *prefix_group = 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, "prefix group %s", &prefix_group)); - else if (unformat (line_input, "disable")) - enable = 0; - else - { - error = clib_error_return (0, "unexpected input `%U'", - format_unformat_error, line_input); - goto done; - } - } - - if (prefix_group == 0 && enable) - error = clib_error_return (0, "Prefix group must be set when enabling"); - else if (sw_if_index != ~0) - { - if (dhcp6_pd_client_enable_disable (sw_if_index, prefix_group, enable) - != 0) - error = clib_error_return (0, "Invalid sw_if_index or prefix group"); - } - else - error = clib_error_return (0, "Missing sw_if_index"); - -done: - vec_free (prefix_group); - unformat_free (line_input); - - return error; -} - -/*? - * This command is used to enable/disable DHCPv6 PD client - * on particular interface. - * - * @cliexpar - * @parblock - * Example of how to enable DHCPv6 PD client: - * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 prefix group my-pd-group} - * Example of how to disable DHCPv6 PD client: - * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 disable} - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (dhcp6_pd_client_enable_disable_command, static) = { - .path = "dhcp6 pd client", - .short_help = "dhcp6 pd client <interface> (prefix group <string> | disable)", - .function = dhcp6_pd_client_enable_disable_command_fn, -}; -/* *INDENT-ON* */ - -static void - vl_api_dhcp6_pd_client_enable_disable_t_handler - (vl_api_dhcp6_pd_client_enable_disable_t * mp) -{ - vl_api_dhcp6_pd_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_pd_client_enable_disable (sw_if_index, mp->prefix_group, - mp->enable); - - BAD_SW_IF_INDEX_LABEL; - - REPLY_MACRO (VL_API_DHCP6_PD_CLIENT_ENABLE_DISABLE_REPLY); -} - -#define vl_msg_name_crc_list -#include <vnet/dhcp/dhcp6_pd_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_pd_client_cp; -#undef _ -} - -static clib_error_t * -dhcp_pd_client_cp_init (vlib_main_t * vm) -{ - dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_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_pd_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_pd_client_cp_msg; -#undef _ - - /* - * Set up the (msg_name, crc, message-id) table - */ - setup_message_id_table (am); - - return 0; -} - -VLIB_INIT_FUNCTION (dhcp_pd_client_cp_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |