1 | /**
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2 | * @file
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3 | * Management Information Base II (RFC1213) TCP objects and functions.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (c) 2006 Axon Digital Design B.V., The Netherlands.
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8 | * All rights reserved.
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9 | *
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10 | * Redistribution and use in source and binary forms, with or without modification,
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11 | * are permitted provided that the following conditions are met:
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12 | *
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13 | * 1. Redistributions of source code must retain the above copyright notice,
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14 | * this list of conditions and the following disclaimer.
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15 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 | * this list of conditions and the following disclaimer in the documentation
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17 | * and/or other materials provided with the distribution.
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18 | * 3. The name of the author may not be used to endorse or promote products
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19 | * derived from this software without specific prior written permission.
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20 | *
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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30 | * OF SUCH DAMAGE.
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31 | *
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32 | * Author: Dirk Ziegelmeier <dziegel@gmx.de>
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33 | * Christiaan Simons <christiaan.simons@axon.tv>
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34 | */
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35 |
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36 | #include "lwip/snmp.h"
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37 | #include "lwip/apps/snmp.h"
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38 | #include "lwip/apps/snmp_core.h"
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39 | #include "lwip/apps/snmp_mib2.h"
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40 | #include "lwip/apps/snmp_table.h"
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41 | #include "lwip/apps/snmp_scalar.h"
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42 | #include "lwip/tcp.h"
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43 | #include "lwip/priv/tcp_priv.h"
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44 | #include "lwip/stats.h"
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45 |
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46 | #include <string.h>
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47 |
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48 | #if LWIP_SNMP && SNMP_LWIP_MIB2 && LWIP_TCP
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49 |
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50 | #if SNMP_USE_NETCONN
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51 | #define SYNC_NODE_NAME(node_name) node_name ## _synced
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52 | #define CREATE_LWIP_SYNC_NODE(oid, node_name) \
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53 | static const struct snmp_threadsync_node node_name ## _synced = SNMP_CREATE_THREAD_SYNC_NODE(oid, &node_name.node, &snmp_mib2_lwip_locks);
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54 | #else
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55 | #define SYNC_NODE_NAME(node_name) node_name
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56 | #define CREATE_LWIP_SYNC_NODE(oid, node_name)
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57 | #endif
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58 |
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59 | /* --- tcp .1.3.6.1.2.1.6 ----------------------------------------------------- */
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60 |
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61 | static s16_t
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62 | tcp_get_value(struct snmp_node_instance *instance, void *value)
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63 | {
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64 | u32_t *uint_ptr = (u32_t *)value;
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65 | s32_t *sint_ptr = (s32_t *)value;
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66 |
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67 | switch (instance->node->oid) {
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68 | case 1: /* tcpRtoAlgorithm, vanj(4) */
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69 | *sint_ptr = 4;
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70 | return sizeof(*sint_ptr);
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71 | case 2: /* tcpRtoMin */
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72 | /* @todo not the actual value, a guess,
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73 | needs to be calculated */
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74 | *sint_ptr = 1000;
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75 | return sizeof(*sint_ptr);
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76 | case 3: /* tcpRtoMax */
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77 | /* @todo not the actual value, a guess,
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78 | needs to be calculated */
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79 | *sint_ptr = 60000;
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80 | return sizeof(*sint_ptr);
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81 | case 4: /* tcpMaxConn */
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82 | *sint_ptr = MEMP_NUM_TCP_PCB;
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83 | return sizeof(*sint_ptr);
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84 | case 5: /* tcpActiveOpens */
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85 | *uint_ptr = STATS_GET(mib2.tcpactiveopens);
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86 | return sizeof(*uint_ptr);
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87 | case 6: /* tcpPassiveOpens */
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88 | *uint_ptr = STATS_GET(mib2.tcppassiveopens);
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89 | return sizeof(*uint_ptr);
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90 | case 7: /* tcpAttemptFails */
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91 | *uint_ptr = STATS_GET(mib2.tcpattemptfails);
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92 | return sizeof(*uint_ptr);
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93 | case 8: /* tcpEstabResets */
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94 | *uint_ptr = STATS_GET(mib2.tcpestabresets);
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95 | return sizeof(*uint_ptr);
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96 | case 9: { /* tcpCurrEstab */
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97 | u16_t tcpcurrestab = 0;
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98 | struct tcp_pcb *pcb = tcp_active_pcbs;
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99 | while (pcb != NULL) {
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100 | if ((pcb->state == ESTABLISHED) ||
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101 | (pcb->state == CLOSE_WAIT)) {
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102 | tcpcurrestab++;
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103 | }
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104 | pcb = pcb->next;
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105 | }
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106 | *uint_ptr = tcpcurrestab;
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107 | }
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108 | return sizeof(*uint_ptr);
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109 | case 10: /* tcpInSegs */
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110 | *uint_ptr = STATS_GET(mib2.tcpinsegs);
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111 | return sizeof(*uint_ptr);
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112 | case 11: /* tcpOutSegs */
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113 | *uint_ptr = STATS_GET(mib2.tcpoutsegs);
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114 | return sizeof(*uint_ptr);
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115 | case 12: /* tcpRetransSegs */
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116 | *uint_ptr = STATS_GET(mib2.tcpretranssegs);
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117 | return sizeof(*uint_ptr);
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118 | case 14: /* tcpInErrs */
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119 | *uint_ptr = STATS_GET(mib2.tcpinerrs);
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120 | return sizeof(*uint_ptr);
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121 | case 15: /* tcpOutRsts */
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122 | *uint_ptr = STATS_GET(mib2.tcpoutrsts);
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123 | return sizeof(*uint_ptr);
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124 | #if LWIP_HAVE_INT64
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125 | case 17: { /* tcpHCInSegs */
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126 | /* use the 32 bit counter for now... */
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127 | u64_t val64 = STATS_GET(mib2.tcpinsegs);
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128 | *((u64_t *)value) = val64;
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129 | }
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130 | return sizeof(u64_t);
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131 | case 18: { /* tcpHCOutSegs */
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132 | /* use the 32 bit counter for now... */
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133 | u64_t val64 = STATS_GET(mib2.tcpoutsegs);
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134 | *((u64_t *)value) = val64;
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135 | }
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136 | return sizeof(u64_t);
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137 | #endif
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138 | default:
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139 | LWIP_DEBUGF(SNMP_MIB_DEBUG, ("tcp_get_value(): unknown id: %"S32_F"\n", instance->node->oid));
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140 | break;
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141 | }
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142 |
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143 | return 0;
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144 | }
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145 |
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146 | /* --- tcpConnTable --- */
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147 |
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148 | #if LWIP_IPV4
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149 |
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150 | /* list of allowed value ranges for incoming OID */
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151 | static const struct snmp_oid_range tcp_ConnTable_oid_ranges[] = {
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152 | { 0, 0xff }, /* IP A */
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153 | { 0, 0xff }, /* IP B */
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154 | { 0, 0xff }, /* IP C */
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155 | { 0, 0xff }, /* IP D */
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156 | { 0, 0xffff }, /* Port */
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157 | { 0, 0xff }, /* IP A */
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158 | { 0, 0xff }, /* IP B */
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159 | { 0, 0xff }, /* IP C */
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160 | { 0, 0xff }, /* IP D */
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161 | { 0, 0xffff } /* Port */
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162 | };
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163 |
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164 | static snmp_err_t
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165 | tcp_ConnTable_get_cell_value_core(struct tcp_pcb *pcb, const u32_t *column, union snmp_variant_value *value, u32_t *value_len)
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166 | {
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167 | LWIP_UNUSED_ARG(value_len);
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168 |
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169 | /* value */
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170 | switch (*column) {
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171 | case 1: /* tcpConnState */
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172 | value->u32 = pcb->state + 1;
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173 | break;
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174 | case 2: /* tcpConnLocalAddress */
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175 | value->u32 = ip_2_ip4(&pcb->local_ip)->addr;
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176 | break;
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177 | case 3: /* tcpConnLocalPort */
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178 | value->u32 = pcb->local_port;
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179 | break;
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180 | case 4: /* tcpConnRemAddress */
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181 | if (pcb->state == LISTEN) {
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182 | value->u32 = IP4_ADDR_ANY4->addr;
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183 | } else {
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184 | value->u32 = ip_2_ip4(&pcb->remote_ip)->addr;
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185 | }
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186 | break;
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187 | case 5: /* tcpConnRemPort */
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188 | if (pcb->state == LISTEN) {
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189 | value->u32 = 0;
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190 | } else {
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191 | value->u32 = pcb->remote_port;
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192 | }
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193 | break;
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194 | default:
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195 | LWIP_ASSERT("invalid id", 0);
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196 | return SNMP_ERR_NOSUCHINSTANCE;
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197 | }
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198 |
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199 | return SNMP_ERR_NOERROR;
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200 | }
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201 |
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202 | static snmp_err_t
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203 | tcp_ConnTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len)
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204 | {
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205 | u8_t i;
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206 | ip4_addr_t local_ip;
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207 | ip4_addr_t remote_ip;
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208 | u16_t local_port;
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209 | u16_t remote_port;
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210 | struct tcp_pcb *pcb;
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211 |
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212 | /* check if incoming OID length and if values are in plausible range */
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213 | if (!snmp_oid_in_range(row_oid, row_oid_len, tcp_ConnTable_oid_ranges, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges))) {
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214 | return SNMP_ERR_NOSUCHINSTANCE;
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215 | }
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216 |
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217 | /* get IPs and ports from incoming OID */
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218 | snmp_oid_to_ip4(&row_oid[0], &local_ip); /* we know it succeeds because of oid_in_range check above */
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219 | local_port = (u16_t)row_oid[4];
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220 | snmp_oid_to_ip4(&row_oid[5], &remote_ip); /* we know it succeeds because of oid_in_range check above */
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221 | remote_port = (u16_t)row_oid[9];
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222 |
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223 | /* find tcp_pcb with requested ips and ports */
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224 | for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_lists); i++) {
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225 | pcb = *tcp_pcb_lists[i];
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226 |
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227 | while (pcb != NULL) {
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228 | /* do local IP and local port match? */
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229 | if (IP_IS_V4_VAL(pcb->local_ip) &&
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230 | ip4_addr_cmp(&local_ip, ip_2_ip4(&pcb->local_ip)) && (local_port == pcb->local_port)) {
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231 |
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232 | /* PCBs in state LISTEN are not connected and have no remote_ip or remote_port */
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233 | if (pcb->state == LISTEN) {
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234 | if (ip4_addr_cmp(&remote_ip, IP4_ADDR_ANY4) && (remote_port == 0)) {
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235 | /* fill in object properties */
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236 | return tcp_ConnTable_get_cell_value_core(pcb, column, value, value_len);
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237 | }
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238 | } else {
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239 | if (IP_IS_V4_VAL(pcb->remote_ip) &&
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240 | ip4_addr_cmp(&remote_ip, ip_2_ip4(&pcb->remote_ip)) && (remote_port == pcb->remote_port)) {
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241 | /* fill in object properties */
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242 | return tcp_ConnTable_get_cell_value_core(pcb, column, value, value_len);
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243 | }
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244 | }
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245 | }
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246 |
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247 | pcb = pcb->next;
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248 | }
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249 | }
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250 |
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251 | /* not found */
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252 | return SNMP_ERR_NOSUCHINSTANCE;
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253 | }
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254 |
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255 | static snmp_err_t
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256 | tcp_ConnTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len)
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257 | {
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258 | u8_t i;
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259 | struct tcp_pcb *pcb;
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260 | struct snmp_next_oid_state state;
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261 | u32_t result_temp[LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges)];
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262 |
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263 | /* init struct to search next oid */
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264 | snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges));
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265 |
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266 | /* iterate over all possible OIDs to find the next one */
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267 | for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_lists); i++) {
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268 | pcb = *tcp_pcb_lists[i];
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269 | while (pcb != NULL) {
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270 | u32_t test_oid[LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges)];
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271 |
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272 | if (IP_IS_V4_VAL(pcb->local_ip)) {
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273 | snmp_ip4_to_oid(ip_2_ip4(&pcb->local_ip), &test_oid[0]);
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274 | test_oid[4] = pcb->local_port;
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275 |
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276 | /* PCBs in state LISTEN are not connected and have no remote_ip or remote_port */
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277 | if (pcb->state == LISTEN) {
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278 | snmp_ip4_to_oid(IP4_ADDR_ANY4, &test_oid[5]);
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279 | test_oid[9] = 0;
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280 | } else {
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281 | if (IP_IS_V6_VAL(pcb->remote_ip)) { /* should never happen */
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282 | continue;
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283 | }
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284 | snmp_ip4_to_oid(ip_2_ip4(&pcb->remote_ip), &test_oid[5]);
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285 | test_oid[9] = pcb->remote_port;
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286 | }
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287 |
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288 | /* check generated OID: is it a candidate for the next one? */
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289 | snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges), pcb);
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290 | }
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291 |
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292 | pcb = pcb->next;
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293 | }
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294 | }
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295 |
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296 | /* did we find a next one? */
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297 | if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
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298 | snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
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299 | /* fill in object properties */
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300 | return tcp_ConnTable_get_cell_value_core((struct tcp_pcb *)state.reference, column, value, value_len);
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301 | }
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302 |
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303 | /* not found */
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304 | return SNMP_ERR_NOSUCHINSTANCE;
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305 | }
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306 |
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307 | #endif /* LWIP_IPV4 */
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308 |
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309 | /* --- tcpConnectionTable --- */
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310 |
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311 | static snmp_err_t
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312 | tcp_ConnectionTable_get_cell_value_core(const u32_t *column, struct tcp_pcb *pcb, union snmp_variant_value *value)
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313 | {
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314 | /* all items except tcpConnectionState and tcpConnectionProcess are declared as not-accessible */
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315 | switch (*column) {
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316 | case 7: /* tcpConnectionState */
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317 | value->u32 = pcb->state + 1;
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318 | break;
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319 | case 8: /* tcpConnectionProcess */
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320 | value->u32 = 0; /* not supported */
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321 | break;
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322 | default:
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323 | return SNMP_ERR_NOSUCHINSTANCE;
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324 | }
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325 |
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326 | return SNMP_ERR_NOERROR;
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327 | }
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328 |
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329 | static snmp_err_t
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330 | tcp_ConnectionTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len)
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331 | {
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332 | ip_addr_t local_ip, remote_ip;
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333 | u16_t local_port, remote_port;
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334 | struct tcp_pcb *pcb;
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335 | u8_t idx = 0;
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336 | u8_t i;
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337 | struct tcp_pcb **const tcp_pcb_nonlisten_lists[] = {&tcp_bound_pcbs, &tcp_active_pcbs, &tcp_tw_pcbs};
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338 |
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339 | LWIP_UNUSED_ARG(value_len);
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340 |
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341 | /* tcpConnectionLocalAddressType + tcpConnectionLocalAddress + tcpConnectionLocalPort */
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342 | idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &local_ip, &local_port);
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343 | if (idx == 0) {
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344 | return SNMP_ERR_NOSUCHINSTANCE;
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345 | }
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346 |
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347 | /* tcpConnectionRemAddressType + tcpConnectionRemAddress + tcpConnectionRemPort */
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348 | idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &remote_ip, &remote_port);
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349 | if (idx == 0) {
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350 | return SNMP_ERR_NOSUCHINSTANCE;
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351 | }
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352 |
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353 | /* find tcp_pcb with requested ip and port*/
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354 | for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_nonlisten_lists); i++) {
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355 | pcb = *tcp_pcb_nonlisten_lists[i];
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356 |
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357 | while (pcb != NULL) {
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358 | if (ip_addr_cmp(&local_ip, &pcb->local_ip) &&
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359 | (local_port == pcb->local_port) &&
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360 | ip_addr_cmp(&remote_ip, &pcb->remote_ip) &&
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361 | (remote_port == pcb->remote_port)) {
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362 | /* fill in object properties */
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363 | return tcp_ConnectionTable_get_cell_value_core(column, pcb, value);
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364 | }
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365 | pcb = pcb->next;
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366 | }
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367 | }
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368 |
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369 | /* not found */
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370 | return SNMP_ERR_NOSUCHINSTANCE;
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371 | }
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372 |
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373 | static snmp_err_t
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374 | tcp_ConnectionTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len)
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375 | {
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376 | struct tcp_pcb *pcb;
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377 | struct snmp_next_oid_state state;
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378 | /* 1x tcpConnectionLocalAddressType + 1x OID len + 16x tcpConnectionLocalAddress + 1x tcpConnectionLocalPort
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379 | * 1x tcpConnectionRemAddressType + 1x OID len + 16x tcpConnectionRemAddress + 1x tcpConnectionRemPort */
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380 | u32_t result_temp[38];
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381 | u8_t i;
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382 | struct tcp_pcb **const tcp_pcb_nonlisten_lists[] = {&tcp_bound_pcbs, &tcp_active_pcbs, &tcp_tw_pcbs};
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383 |
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384 | LWIP_UNUSED_ARG(value_len);
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385 |
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386 | /* init struct to search next oid */
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387 | snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(result_temp));
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388 |
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389 | /* iterate over all possible OIDs to find the next one */
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390 | for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_nonlisten_lists); i++) {
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391 | pcb = *tcp_pcb_nonlisten_lists[i];
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392 |
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393 | while (pcb != NULL) {
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394 | u8_t idx = 0;
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395 | u32_t test_oid[LWIP_ARRAYSIZE(result_temp)];
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396 |
|
---|
397 | /* tcpConnectionLocalAddressType + tcpConnectionLocalAddress + tcpConnectionLocalPort */
|
---|
398 | idx += snmp_ip_port_to_oid(&pcb->local_ip, pcb->local_port, &test_oid[idx]);
|
---|
399 |
|
---|
400 | /* tcpConnectionRemAddressType + tcpConnectionRemAddress + tcpConnectionRemPort */
|
---|
401 | idx += snmp_ip_port_to_oid(&pcb->remote_ip, pcb->remote_port, &test_oid[idx]);
|
---|
402 |
|
---|
403 | /* check generated OID: is it a candidate for the next one? */
|
---|
404 | snmp_next_oid_check(&state, test_oid, idx, pcb);
|
---|
405 |
|
---|
406 | pcb = pcb->next;
|
---|
407 | }
|
---|
408 | }
|
---|
409 |
|
---|
410 | /* did we find a next one? */
|
---|
411 | if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
|
---|
412 | snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
|
---|
413 | /* fill in object properties */
|
---|
414 | return tcp_ConnectionTable_get_cell_value_core(column, (struct tcp_pcb *)state.reference, value);
|
---|
415 | } else {
|
---|
416 | /* not found */
|
---|
417 | return SNMP_ERR_NOSUCHINSTANCE;
|
---|
418 | }
|
---|
419 | }
|
---|
420 |
|
---|
421 | /* --- tcpListenerTable --- */
|
---|
422 |
|
---|
423 | static snmp_err_t
|
---|
424 | tcp_ListenerTable_get_cell_value_core(const u32_t *column, union snmp_variant_value *value)
|
---|
425 | {
|
---|
426 | /* all items except tcpListenerProcess are declared as not-accessible */
|
---|
427 | switch (*column) {
|
---|
428 | case 4: /* tcpListenerProcess */
|
---|
429 | value->u32 = 0; /* not supported */
|
---|
430 | break;
|
---|
431 | default:
|
---|
432 | return SNMP_ERR_NOSUCHINSTANCE;
|
---|
433 | }
|
---|
434 |
|
---|
435 | return SNMP_ERR_NOERROR;
|
---|
436 | }
|
---|
437 |
|
---|
438 | static snmp_err_t
|
---|
439 | tcp_ListenerTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len)
|
---|
440 | {
|
---|
441 | ip_addr_t local_ip;
|
---|
442 | u16_t local_port;
|
---|
443 | struct tcp_pcb_listen *pcb;
|
---|
444 | u8_t idx = 0;
|
---|
445 |
|
---|
446 | LWIP_UNUSED_ARG(value_len);
|
---|
447 |
|
---|
448 | /* tcpListenerLocalAddressType + tcpListenerLocalAddress + tcpListenerLocalPort */
|
---|
449 | idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &local_ip, &local_port);
|
---|
450 | if (idx == 0) {
|
---|
451 | return SNMP_ERR_NOSUCHINSTANCE;
|
---|
452 | }
|
---|
453 |
|
---|
454 | /* find tcp_pcb with requested ip and port*/
|
---|
455 | pcb = tcp_listen_pcbs.listen_pcbs;
|
---|
456 | while (pcb != NULL) {
|
---|
457 | if (ip_addr_cmp(&local_ip, &pcb->local_ip) &&
|
---|
458 | (local_port == pcb->local_port)) {
|
---|
459 | /* fill in object properties */
|
---|
460 | return tcp_ListenerTable_get_cell_value_core(column, value);
|
---|
461 | }
|
---|
462 | pcb = pcb->next;
|
---|
463 | }
|
---|
464 |
|
---|
465 | /* not found */
|
---|
466 | return SNMP_ERR_NOSUCHINSTANCE;
|
---|
467 | }
|
---|
468 |
|
---|
469 | static snmp_err_t
|
---|
470 | tcp_ListenerTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len)
|
---|
471 | {
|
---|
472 | struct tcp_pcb_listen *pcb;
|
---|
473 | struct snmp_next_oid_state state;
|
---|
474 | /* 1x tcpListenerLocalAddressType + 1x OID len + 16x tcpListenerLocalAddress + 1x tcpListenerLocalPort */
|
---|
475 | u32_t result_temp[19];
|
---|
476 |
|
---|
477 | LWIP_UNUSED_ARG(value_len);
|
---|
478 |
|
---|
479 | /* init struct to search next oid */
|
---|
480 | snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(result_temp));
|
---|
481 |
|
---|
482 | /* iterate over all possible OIDs to find the next one */
|
---|
483 | pcb = tcp_listen_pcbs.listen_pcbs;
|
---|
484 | while (pcb != NULL) {
|
---|
485 | u8_t idx = 0;
|
---|
486 | u32_t test_oid[LWIP_ARRAYSIZE(result_temp)];
|
---|
487 |
|
---|
488 | /* tcpListenerLocalAddressType + tcpListenerLocalAddress + tcpListenerLocalPort */
|
---|
489 | idx += snmp_ip_port_to_oid(&pcb->local_ip, pcb->local_port, &test_oid[idx]);
|
---|
490 |
|
---|
491 | /* check generated OID: is it a candidate for the next one? */
|
---|
492 | snmp_next_oid_check(&state, test_oid, idx, NULL);
|
---|
493 |
|
---|
494 | pcb = pcb->next;
|
---|
495 | }
|
---|
496 |
|
---|
497 | /* did we find a next one? */
|
---|
498 | if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
|
---|
499 | snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
|
---|
500 | /* fill in object properties */
|
---|
501 | return tcp_ListenerTable_get_cell_value_core(column, value);
|
---|
502 | } else {
|
---|
503 | /* not found */
|
---|
504 | return SNMP_ERR_NOSUCHINSTANCE;
|
---|
505 | }
|
---|
506 | }
|
---|
507 |
|
---|
508 | static const struct snmp_scalar_node tcp_RtoAlgorithm = SNMP_SCALAR_CREATE_NODE_READONLY(1, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
|
---|
509 | static const struct snmp_scalar_node tcp_RtoMin = SNMP_SCALAR_CREATE_NODE_READONLY(2, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
|
---|
510 | static const struct snmp_scalar_node tcp_RtoMax = SNMP_SCALAR_CREATE_NODE_READONLY(3, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
|
---|
511 | static const struct snmp_scalar_node tcp_MaxConn = SNMP_SCALAR_CREATE_NODE_READONLY(4, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
|
---|
512 | static const struct snmp_scalar_node tcp_ActiveOpens = SNMP_SCALAR_CREATE_NODE_READONLY(5, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
513 | static const struct snmp_scalar_node tcp_PassiveOpens = SNMP_SCALAR_CREATE_NODE_READONLY(6, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
514 | static const struct snmp_scalar_node tcp_AttemptFails = SNMP_SCALAR_CREATE_NODE_READONLY(7, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
515 | static const struct snmp_scalar_node tcp_EstabResets = SNMP_SCALAR_CREATE_NODE_READONLY(8, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
516 | static const struct snmp_scalar_node tcp_CurrEstab = SNMP_SCALAR_CREATE_NODE_READONLY(9, SNMP_ASN1_TYPE_GAUGE, tcp_get_value);
|
---|
517 | static const struct snmp_scalar_node tcp_InSegs = SNMP_SCALAR_CREATE_NODE_READONLY(10, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
518 | static const struct snmp_scalar_node tcp_OutSegs = SNMP_SCALAR_CREATE_NODE_READONLY(11, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
519 | static const struct snmp_scalar_node tcp_RetransSegs = SNMP_SCALAR_CREATE_NODE_READONLY(12, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
520 | static const struct snmp_scalar_node tcp_InErrs = SNMP_SCALAR_CREATE_NODE_READONLY(14, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
521 | static const struct snmp_scalar_node tcp_OutRsts = SNMP_SCALAR_CREATE_NODE_READONLY(15, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
|
---|
522 | #if LWIP_HAVE_INT64
|
---|
523 | static const struct snmp_scalar_node tcp_HCInSegs = SNMP_SCALAR_CREATE_NODE_READONLY(17, SNMP_ASN1_TYPE_COUNTER64, tcp_get_value);
|
---|
524 | static const struct snmp_scalar_node tcp_HCOutSegs = SNMP_SCALAR_CREATE_NODE_READONLY(18, SNMP_ASN1_TYPE_COUNTER64, tcp_get_value);
|
---|
525 | #endif
|
---|
526 |
|
---|
527 | #if LWIP_IPV4
|
---|
528 | static const struct snmp_table_simple_col_def tcp_ConnTable_columns[] = {
|
---|
529 | { 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnState */
|
---|
530 | { 2, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnLocalAddress */
|
---|
531 | { 3, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnLocalPort */
|
---|
532 | { 4, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnRemAddress */
|
---|
533 | { 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpConnRemPort */
|
---|
534 | };
|
---|
535 |
|
---|
536 | static const struct snmp_table_simple_node tcp_ConnTable = SNMP_TABLE_CREATE_SIMPLE(13, tcp_ConnTable_columns, tcp_ConnTable_get_cell_value, tcp_ConnTable_get_next_cell_instance_and_value);
|
---|
537 | #endif /* LWIP_IPV4 */
|
---|
538 |
|
---|
539 | static const struct snmp_table_simple_col_def tcp_ConnectionTable_columns[] = {
|
---|
540 | /* all items except tcpConnectionState and tcpConnectionProcess are declared as not-accessible */
|
---|
541 | { 7, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnectionState */
|
---|
542 | { 8, SNMP_ASN1_TYPE_UNSIGNED32, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpConnectionProcess */
|
---|
543 | };
|
---|
544 |
|
---|
545 | static const struct snmp_table_simple_node tcp_ConnectionTable = SNMP_TABLE_CREATE_SIMPLE(19, tcp_ConnectionTable_columns, tcp_ConnectionTable_get_cell_value, tcp_ConnectionTable_get_next_cell_instance_and_value);
|
---|
546 |
|
---|
547 |
|
---|
548 | static const struct snmp_table_simple_col_def tcp_ListenerTable_columns[] = {
|
---|
549 | /* all items except tcpListenerProcess are declared as not-accessible */
|
---|
550 | { 4, SNMP_ASN1_TYPE_UNSIGNED32, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpListenerProcess */
|
---|
551 | };
|
---|
552 |
|
---|
553 | static const struct snmp_table_simple_node tcp_ListenerTable = SNMP_TABLE_CREATE_SIMPLE(20, tcp_ListenerTable_columns, tcp_ListenerTable_get_cell_value, tcp_ListenerTable_get_next_cell_instance_and_value);
|
---|
554 |
|
---|
555 | /* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */
|
---|
556 | CREATE_LWIP_SYNC_NODE( 1, tcp_RtoAlgorithm)
|
---|
557 | CREATE_LWIP_SYNC_NODE( 2, tcp_RtoMin)
|
---|
558 | CREATE_LWIP_SYNC_NODE( 3, tcp_RtoMax)
|
---|
559 | CREATE_LWIP_SYNC_NODE( 4, tcp_MaxConn)
|
---|
560 | CREATE_LWIP_SYNC_NODE( 5, tcp_ActiveOpens)
|
---|
561 | CREATE_LWIP_SYNC_NODE( 6, tcp_PassiveOpens)
|
---|
562 | CREATE_LWIP_SYNC_NODE( 7, tcp_AttemptFails)
|
---|
563 | CREATE_LWIP_SYNC_NODE( 8, tcp_EstabResets)
|
---|
564 | CREATE_LWIP_SYNC_NODE( 9, tcp_CurrEstab)
|
---|
565 | CREATE_LWIP_SYNC_NODE(10, tcp_InSegs)
|
---|
566 | CREATE_LWIP_SYNC_NODE(11, tcp_OutSegs)
|
---|
567 | CREATE_LWIP_SYNC_NODE(12, tcp_RetransSegs)
|
---|
568 | #if LWIP_IPV4
|
---|
569 | CREATE_LWIP_SYNC_NODE(13, tcp_ConnTable)
|
---|
570 | #endif /* LWIP_IPV4 */
|
---|
571 | CREATE_LWIP_SYNC_NODE(14, tcp_InErrs)
|
---|
572 | CREATE_LWIP_SYNC_NODE(15, tcp_OutRsts)
|
---|
573 | #if LWIP_HAVE_INT64
|
---|
574 | CREATE_LWIP_SYNC_NODE(17, tcp_HCInSegs)
|
---|
575 | CREATE_LWIP_SYNC_NODE(18, tcp_HCOutSegs)
|
---|
576 | #endif
|
---|
577 | CREATE_LWIP_SYNC_NODE(19, tcp_ConnectionTable)
|
---|
578 | CREATE_LWIP_SYNC_NODE(20, tcp_ListenerTable)
|
---|
579 |
|
---|
580 | static const struct snmp_node *const tcp_nodes[] = {
|
---|
581 | &SYNC_NODE_NAME(tcp_RtoAlgorithm).node.node,
|
---|
582 | &SYNC_NODE_NAME(tcp_RtoMin).node.node,
|
---|
583 | &SYNC_NODE_NAME(tcp_RtoMax).node.node,
|
---|
584 | &SYNC_NODE_NAME(tcp_MaxConn).node.node,
|
---|
585 | &SYNC_NODE_NAME(tcp_ActiveOpens).node.node,
|
---|
586 | &SYNC_NODE_NAME(tcp_PassiveOpens).node.node,
|
---|
587 | &SYNC_NODE_NAME(tcp_AttemptFails).node.node,
|
---|
588 | &SYNC_NODE_NAME(tcp_EstabResets).node.node,
|
---|
589 | &SYNC_NODE_NAME(tcp_CurrEstab).node.node,
|
---|
590 | &SYNC_NODE_NAME(tcp_InSegs).node.node,
|
---|
591 | &SYNC_NODE_NAME(tcp_OutSegs).node.node,
|
---|
592 | &SYNC_NODE_NAME(tcp_RetransSegs).node.node,
|
---|
593 | #if LWIP_IPV4
|
---|
594 | &SYNC_NODE_NAME(tcp_ConnTable).node.node,
|
---|
595 | #endif /* LWIP_IPV4 */
|
---|
596 | &SYNC_NODE_NAME(tcp_InErrs).node.node,
|
---|
597 | &SYNC_NODE_NAME(tcp_OutRsts).node.node,
|
---|
598 | &SYNC_NODE_NAME(tcp_HCInSegs).node.node,
|
---|
599 | #if LWIP_HAVE_INT64
|
---|
600 | &SYNC_NODE_NAME(tcp_HCOutSegs).node.node,
|
---|
601 | &SYNC_NODE_NAME(tcp_ConnectionTable).node.node,
|
---|
602 | #endif
|
---|
603 | &SYNC_NODE_NAME(tcp_ListenerTable).node.node
|
---|
604 | };
|
---|
605 |
|
---|
606 | const struct snmp_tree_node snmp_mib2_tcp_root = SNMP_CREATE_TREE_NODE(6, tcp_nodes);
|
---|
607 | #endif /* LWIP_SNMP && SNMP_LWIP_MIB2 && LWIP_TCP */
|
---|