Nanostack Border Router is a generic mbed border router implementation that provides the 6LoWPAN ND or Thread border router initialization logic.
source/thread_br_conn_handler.c@0:85f4174a8e29, 2017-03-09 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Mar 09 17:47:03 2017 +0000
- Revision:
- 0:85f4174a8e29
- Child:
- 4:0a9d1eeaa905
Initial commit.
Commit copied from https://github.com/ARMmbed/nanostack-border-router
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:85f4174a8e29 | 1 | /* |
mbed_official | 0:85f4174a8e29 | 2 | * Copyright (c) 2016 ARM Limited. All rights reserved. |
mbed_official | 0:85f4174a8e29 | 3 | */ |
mbed_official | 0:85f4174a8e29 | 4 | |
mbed_official | 0:85f4174a8e29 | 5 | #include <string.h> |
mbed_official | 0:85f4174a8e29 | 6 | #include "net_interface.h" |
mbed_official | 0:85f4174a8e29 | 7 | #include "mbed-trace/mbed_trace.h" |
mbed_official | 0:85f4174a8e29 | 8 | #include "thread_border_router_api.h" |
mbed_official | 0:85f4174a8e29 | 9 | #include "thread_br_conn_handler.h" |
mbed_official | 0:85f4174a8e29 | 10 | #include "thread_dhcpv6_server.h" |
mbed_official | 0:85f4174a8e29 | 11 | #include "borderrouter_helpers.h" |
mbed_official | 0:85f4174a8e29 | 12 | #include "common_functions.h" |
mbed_official | 0:85f4174a8e29 | 13 | #include "eventOS_event_timer.h" |
mbed_official | 0:85f4174a8e29 | 14 | #include "thread_bbr_ext.h" |
mbed_official | 0:85f4174a8e29 | 15 | |
mbed_official | 0:85f4174a8e29 | 16 | #define TRACE_GROUP "TBRH" |
mbed_official | 0:85f4174a8e29 | 17 | #define DHCP_SERVER_SHUTDOWN_TIMEOUT (100) |
mbed_official | 0:85f4174a8e29 | 18 | |
mbed_official | 0:85f4174a8e29 | 19 | typedef struct { |
mbed_official | 0:85f4174a8e29 | 20 | |
mbed_official | 0:85f4174a8e29 | 21 | uint8_t dhcp_prefix[16]; |
mbed_official | 0:85f4174a8e29 | 22 | timeout_t *thread_dhcp_shutdown_timer; |
mbed_official | 0:85f4174a8e29 | 23 | uint8_t dhcp_prefix_len; |
mbed_official | 0:85f4174a8e29 | 24 | int8_t thread_interface_id; |
mbed_official | 0:85f4174a8e29 | 25 | int8_t eth_interface_id; |
mbed_official | 0:85f4174a8e29 | 26 | bool eth_connection_ready; |
mbed_official | 0:85f4174a8e29 | 27 | bool thread_connection_ready; |
mbed_official | 0:85f4174a8e29 | 28 | bool dhcp_server_running; |
mbed_official | 0:85f4174a8e29 | 29 | } thread_br_handler_t; |
mbed_official | 0:85f4174a8e29 | 30 | |
mbed_official | 0:85f4174a8e29 | 31 | static thread_br_handler_t thread_br_handler; |
mbed_official | 0:85f4174a8e29 | 32 | static void thread_br_conn_handler_border_router_startup_attempt(void); |
mbed_official | 0:85f4174a8e29 | 33 | static bool thread_br_conn_handler_default_route_enable(void); |
mbed_official | 0:85f4174a8e29 | 34 | static void thread_br_conn_handler_dhcp_server_stop_cb(void *arg); |
mbed_official | 0:85f4174a8e29 | 35 | static void thread_br_conn_handler_border_router_shutdown_request(void); |
mbed_official | 0:85f4174a8e29 | 36 | |
mbed_official | 0:85f4174a8e29 | 37 | |
mbed_official | 0:85f4174a8e29 | 38 | void thread_br_conn_handler_init(void) |
mbed_official | 0:85f4174a8e29 | 39 | { |
mbed_official | 0:85f4174a8e29 | 40 | thread_br_handler.eth_connection_ready = false; |
mbed_official | 0:85f4174a8e29 | 41 | thread_br_handler.thread_connection_ready = false; |
mbed_official | 0:85f4174a8e29 | 42 | thread_br_handler.dhcp_server_running = false; |
mbed_official | 0:85f4174a8e29 | 43 | thread_br_handler.dhcp_prefix_len = 0; |
mbed_official | 0:85f4174a8e29 | 44 | thread_br_handler.thread_interface_id = -1; |
mbed_official | 0:85f4174a8e29 | 45 | thread_br_handler.eth_interface_id = -1; |
mbed_official | 0:85f4174a8e29 | 46 | thread_br_handler.thread_dhcp_shutdown_timer = NULL; |
mbed_official | 0:85f4174a8e29 | 47 | memset(thread_br_handler.dhcp_prefix, 0, 16); |
mbed_official | 0:85f4174a8e29 | 48 | } |
mbed_official | 0:85f4174a8e29 | 49 | |
mbed_official | 0:85f4174a8e29 | 50 | static void thread_br_conn_handler_border_router_startup_attempt(void) |
mbed_official | 0:85f4174a8e29 | 51 | { |
mbed_official | 0:85f4174a8e29 | 52 | if (thread_br_handler.thread_dhcp_shutdown_timer != NULL) { |
mbed_official | 0:85f4174a8e29 | 53 | tr_debug("DHCP server already running, enable default_route"); |
mbed_official | 0:85f4174a8e29 | 54 | eventOS_timeout_cancel(thread_br_handler.thread_dhcp_shutdown_timer); |
mbed_official | 0:85f4174a8e29 | 55 | thread_br_handler.thread_dhcp_shutdown_timer = NULL; |
mbed_official | 0:85f4174a8e29 | 56 | } |
mbed_official | 0:85f4174a8e29 | 57 | |
mbed_official | 0:85f4174a8e29 | 58 | if (!thread_br_handler.eth_connection_ready) { |
mbed_official | 0:85f4174a8e29 | 59 | tr_debug("eth0 is down"); |
mbed_official | 0:85f4174a8e29 | 60 | return; |
mbed_official | 0:85f4174a8e29 | 61 | } else if (!thread_br_handler.thread_connection_ready) { |
mbed_official | 0:85f4174a8e29 | 62 | tr_debug("mesh0 is down"); |
mbed_official | 0:85f4174a8e29 | 63 | return; |
mbed_official | 0:85f4174a8e29 | 64 | } |
mbed_official | 0:85f4174a8e29 | 65 | |
mbed_official | 0:85f4174a8e29 | 66 | if (thread_br_handler.dhcp_prefix_len == 0) { |
mbed_official | 0:85f4174a8e29 | 67 | //No prefix/prefix_len to start DHCP server |
mbed_official | 0:85f4174a8e29 | 68 | tr_error("DHCP server prefix length = 0"); |
mbed_official | 0:85f4174a8e29 | 69 | return; |
mbed_official | 0:85f4174a8e29 | 70 | } |
mbed_official | 0:85f4174a8e29 | 71 | |
mbed_official | 0:85f4174a8e29 | 72 | if (thread_br_handler.thread_interface_id == -1) { |
mbed_official | 0:85f4174a8e29 | 73 | tr_error("Thread interface ID not set"); |
mbed_official | 0:85f4174a8e29 | 74 | return; |
mbed_official | 0:85f4174a8e29 | 75 | } |
mbed_official | 0:85f4174a8e29 | 76 | |
mbed_official | 0:85f4174a8e29 | 77 | if (thread_br_handler.dhcp_server_running == true) { |
mbed_official | 0:85f4174a8e29 | 78 | // DHCP server is already running, enable default route |
mbed_official | 0:85f4174a8e29 | 79 | tr_debug("DHCP server already running, enable default_route"); |
mbed_official | 0:85f4174a8e29 | 80 | thread_br_conn_handler_default_route_enable(); |
mbed_official | 0:85f4174a8e29 | 81 | return; |
mbed_official | 0:85f4174a8e29 | 82 | } |
mbed_official | 0:85f4174a8e29 | 83 | |
mbed_official | 0:85f4174a8e29 | 84 | int retcode = thread_dhcpv6_server_add(thread_br_handler.thread_interface_id, thread_br_handler.dhcp_prefix, 200, true); |
mbed_official | 0:85f4174a8e29 | 85 | if (retcode == 0) { |
mbed_official | 0:85f4174a8e29 | 86 | tr_debug("DHCP server started "); |
mbed_official | 0:85f4174a8e29 | 87 | if (thread_br_conn_handler_default_route_enable()) { |
mbed_official | 0:85f4174a8e29 | 88 | thread_br_handler.dhcp_server_running = true; |
mbed_official | 0:85f4174a8e29 | 89 | thread_bbr_extension_start(thread_br_handler.thread_interface_id, thread_br_handler.eth_interface_id); |
mbed_official | 0:85f4174a8e29 | 90 | } else { |
mbed_official | 0:85f4174a8e29 | 91 | tr_error("Failed to update DHCP default route"); |
mbed_official | 0:85f4174a8e29 | 92 | } |
mbed_official | 0:85f4174a8e29 | 93 | } else { |
mbed_official | 0:85f4174a8e29 | 94 | tr_error("DHCP server start failed"); |
mbed_official | 0:85f4174a8e29 | 95 | } |
mbed_official | 0:85f4174a8e29 | 96 | } |
mbed_official | 0:85f4174a8e29 | 97 | |
mbed_official | 0:85f4174a8e29 | 98 | void thread_br_conn_handler_thread_connection_update(bool status) |
mbed_official | 0:85f4174a8e29 | 99 | { |
mbed_official | 0:85f4174a8e29 | 100 | thread_br_handler.thread_connection_ready = status; |
mbed_official | 0:85f4174a8e29 | 101 | if (status) { |
mbed_official | 0:85f4174a8e29 | 102 | tr_debug("mesh0 connected"); |
mbed_official | 0:85f4174a8e29 | 103 | thread_br_conn_handler_border_router_startup_attempt(); |
mbed_official | 0:85f4174a8e29 | 104 | } else { |
mbed_official | 0:85f4174a8e29 | 105 | // Thread network down. Reset DHCP server back to original state |
mbed_official | 0:85f4174a8e29 | 106 | thread_br_handler.dhcp_server_running = false; |
mbed_official | 0:85f4174a8e29 | 107 | if (thread_br_handler.thread_dhcp_shutdown_timer != NULL) { |
mbed_official | 0:85f4174a8e29 | 108 | // cancel active shutdown timer |
mbed_official | 0:85f4174a8e29 | 109 | eventOS_timeout_cancel(thread_br_handler.thread_dhcp_shutdown_timer); |
mbed_official | 0:85f4174a8e29 | 110 | thread_br_handler.thread_dhcp_shutdown_timer = NULL; |
mbed_official | 0:85f4174a8e29 | 111 | } |
mbed_official | 0:85f4174a8e29 | 112 | } |
mbed_official | 0:85f4174a8e29 | 113 | } |
mbed_official | 0:85f4174a8e29 | 114 | |
mbed_official | 0:85f4174a8e29 | 115 | |
mbed_official | 0:85f4174a8e29 | 116 | void thread_br_conn_handler_ethernet_connection_update(bool status) |
mbed_official | 0:85f4174a8e29 | 117 | { |
mbed_official | 0:85f4174a8e29 | 118 | thread_br_handler.eth_connection_ready = status; |
mbed_official | 0:85f4174a8e29 | 119 | if (status) { |
mbed_official | 0:85f4174a8e29 | 120 | tr_debug("Eth0 connected"); |
mbed_official | 0:85f4174a8e29 | 121 | thread_br_conn_handler_border_router_startup_attempt(); |
mbed_official | 0:85f4174a8e29 | 122 | } else { |
mbed_official | 0:85f4174a8e29 | 123 | // Ethernet connection down, request DHCP server shutdown |
mbed_official | 0:85f4174a8e29 | 124 | thread_br_conn_handler_border_router_shutdown_request(); |
mbed_official | 0:85f4174a8e29 | 125 | tr_debug("Eth0 disconnected"); |
mbed_official | 0:85f4174a8e29 | 126 | } |
mbed_official | 0:85f4174a8e29 | 127 | } |
mbed_official | 0:85f4174a8e29 | 128 | |
mbed_official | 0:85f4174a8e29 | 129 | void thread_br_conn_handler_eth_ready() |
mbed_official | 0:85f4174a8e29 | 130 | { |
mbed_official | 0:85f4174a8e29 | 131 | uint8_t prefix_len = 64; |
mbed_official | 0:85f4174a8e29 | 132 | uint8_t global_address[16]; |
mbed_official | 0:85f4174a8e29 | 133 | |
mbed_official | 0:85f4174a8e29 | 134 | if (0 == arm_net_address_get(thread_br_conn_handler_eth_interface_id_get(), ADDR_IPV6_GP, global_address)) { |
mbed_official | 0:85f4174a8e29 | 135 | tr_info("Ethernet (eth0) bootstrap ready. IP: %s", print_ipv6(global_address)); |
mbed_official | 0:85f4174a8e29 | 136 | } else { |
mbed_official | 0:85f4174a8e29 | 137 | tr_warn("arm_net_address_get fail"); |
mbed_official | 0:85f4174a8e29 | 138 | } |
mbed_official | 0:85f4174a8e29 | 139 | thread_br_handler.dhcp_prefix_len = prefix_len; |
mbed_official | 0:85f4174a8e29 | 140 | memset(thread_br_handler.dhcp_prefix, 0, 16); |
mbed_official | 0:85f4174a8e29 | 141 | memcpy(thread_br_handler.dhcp_prefix, global_address, prefix_len / 8); |
mbed_official | 0:85f4174a8e29 | 142 | } |
mbed_official | 0:85f4174a8e29 | 143 | |
mbed_official | 0:85f4174a8e29 | 144 | static bool thread_br_conn_handler_default_route_enable(void) |
mbed_official | 0:85f4174a8e29 | 145 | { |
mbed_official | 0:85f4174a8e29 | 146 | thread_border_router_info_t thread_border_router_info; |
mbed_official | 0:85f4174a8e29 | 147 | thread_border_router_info.Prf = 1; |
mbed_official | 0:85f4174a8e29 | 148 | thread_border_router_info.P_preferred = false; |
mbed_official | 0:85f4174a8e29 | 149 | thread_border_router_info.P_slaac = false; |
mbed_official | 0:85f4174a8e29 | 150 | thread_border_router_info.P_dhcp = true; |
mbed_official | 0:85f4174a8e29 | 151 | thread_border_router_info.P_configure = false; |
mbed_official | 0:85f4174a8e29 | 152 | thread_border_router_info.P_default_route = true; |
mbed_official | 0:85f4174a8e29 | 153 | thread_border_router_info.P_on_mesh = false; |
mbed_official | 0:85f4174a8e29 | 154 | thread_border_router_info.P_nd_dns = false; |
mbed_official | 0:85f4174a8e29 | 155 | thread_border_router_info.stableData = true; |
mbed_official | 0:85f4174a8e29 | 156 | |
mbed_official | 0:85f4174a8e29 | 157 | if (thread_border_router_prefix_add(thread_br_handler.thread_interface_id, thread_br_handler.dhcp_prefix, thread_br_handler.dhcp_prefix_len, &thread_border_router_info) == 0) { |
mbed_official | 0:85f4174a8e29 | 158 | thread_border_router_publish(thread_br_handler.thread_interface_id); |
mbed_official | 0:85f4174a8e29 | 159 | tr_debug("Updated %s prefix", print_ipv6_prefix(thread_br_handler.dhcp_prefix, thread_br_handler.dhcp_prefix_len)); |
mbed_official | 0:85f4174a8e29 | 160 | return true; |
mbed_official | 0:85f4174a8e29 | 161 | } else { |
mbed_official | 0:85f4174a8e29 | 162 | tr_error("Failed to enable default_route flag to prefix"); |
mbed_official | 0:85f4174a8e29 | 163 | return false; |
mbed_official | 0:85f4174a8e29 | 164 | } |
mbed_official | 0:85f4174a8e29 | 165 | } |
mbed_official | 0:85f4174a8e29 | 166 | |
mbed_official | 0:85f4174a8e29 | 167 | static void thread_br_conn_handler_dhcp_server_stop_cb(void *arg) |
mbed_official | 0:85f4174a8e29 | 168 | { |
mbed_official | 0:85f4174a8e29 | 169 | (void)arg; |
mbed_official | 0:85f4174a8e29 | 170 | thread_br_handler.thread_dhcp_shutdown_timer = NULL; |
mbed_official | 0:85f4174a8e29 | 171 | thread_br_handler.dhcp_server_running = false; |
mbed_official | 0:85f4174a8e29 | 172 | thread_dhcpv6_server_delete(thread_br_handler.thread_interface_id, thread_br_handler.dhcp_prefix); |
mbed_official | 0:85f4174a8e29 | 173 | thread_border_router_publish(thread_br_handler.thread_interface_id); |
mbed_official | 0:85f4174a8e29 | 174 | |
mbed_official | 0:85f4174a8e29 | 175 | tr_debug("DHCP server stop cb"); |
mbed_official | 0:85f4174a8e29 | 176 | thread_br_handler.dhcp_prefix_len = 0; |
mbed_official | 0:85f4174a8e29 | 177 | memset(thread_br_handler.dhcp_prefix, 0, 16); |
mbed_official | 0:85f4174a8e29 | 178 | } |
mbed_official | 0:85f4174a8e29 | 179 | |
mbed_official | 0:85f4174a8e29 | 180 | static void thread_br_conn_handler_border_router_shutdown_request(void) |
mbed_official | 0:85f4174a8e29 | 181 | { |
mbed_official | 0:85f4174a8e29 | 182 | if (thread_br_handler.dhcp_server_running && thread_br_handler.thread_dhcp_shutdown_timer == NULL) { |
mbed_official | 0:85f4174a8e29 | 183 | tr_debug("DHCP server shutdown timer started"); |
mbed_official | 0:85f4174a8e29 | 184 | thread_br_handler.thread_dhcp_shutdown_timer = eventOS_timeout_ms(thread_br_conn_handler_dhcp_server_stop_cb, DHCP_SERVER_SHUTDOWN_TIMEOUT, NULL); |
mbed_official | 0:85f4174a8e29 | 185 | } |
mbed_official | 0:85f4174a8e29 | 186 | } |
mbed_official | 0:85f4174a8e29 | 187 | |
mbed_official | 0:85f4174a8e29 | 188 | void thread_br_conn_handler_thread_interface_id_set(int8_t interfaceId) |
mbed_official | 0:85f4174a8e29 | 189 | { |
mbed_official | 0:85f4174a8e29 | 190 | thread_br_handler.thread_interface_id = interfaceId; |
mbed_official | 0:85f4174a8e29 | 191 | thread_bbr_extension_mesh_interface_updated_ntf(thread_br_handler.thread_interface_id); |
mbed_official | 0:85f4174a8e29 | 192 | } |
mbed_official | 0:85f4174a8e29 | 193 | |
mbed_official | 0:85f4174a8e29 | 194 | int8_t thread_br_conn_handler_thread_interface_id_get(void) |
mbed_official | 0:85f4174a8e29 | 195 | { |
mbed_official | 0:85f4174a8e29 | 196 | return thread_br_handler.thread_interface_id; |
mbed_official | 0:85f4174a8e29 | 197 | } |
mbed_official | 0:85f4174a8e29 | 198 | |
mbed_official | 0:85f4174a8e29 | 199 | bool thread_br_conn_handler_eth_connection_status_get(void) |
mbed_official | 0:85f4174a8e29 | 200 | { |
mbed_official | 0:85f4174a8e29 | 201 | return thread_br_handler.eth_connection_ready; |
mbed_official | 0:85f4174a8e29 | 202 | } |
mbed_official | 0:85f4174a8e29 | 203 | |
mbed_official | 0:85f4174a8e29 | 204 | bool thread_br_conn_handler_thread_connection_status_get(void) |
mbed_official | 0:85f4174a8e29 | 205 | { |
mbed_official | 0:85f4174a8e29 | 206 | return thread_br_handler.thread_connection_ready; |
mbed_official | 0:85f4174a8e29 | 207 | } |
mbed_official | 0:85f4174a8e29 | 208 | |
mbed_official | 0:85f4174a8e29 | 209 | void thread_br_conn_handler_eth_interface_id_set(int8_t interfaceId) |
mbed_official | 0:85f4174a8e29 | 210 | { |
mbed_official | 0:85f4174a8e29 | 211 | thread_br_handler.eth_interface_id = interfaceId; |
mbed_official | 0:85f4174a8e29 | 212 | thread_bbr_extension_bb_interface_updated_ntf(thread_br_handler.eth_interface_id); |
mbed_official | 0:85f4174a8e29 | 213 | } |
mbed_official | 0:85f4174a8e29 | 214 | |
mbed_official | 0:85f4174a8e29 | 215 | int8_t thread_br_conn_handler_eth_interface_id_get(void) |
mbed_official | 0:85f4174a8e29 | 216 | { |
mbed_official | 0:85f4174a8e29 | 217 | return thread_br_handler.eth_interface_id; |
mbed_official | 0:85f4174a8e29 | 218 | } |