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1 | office | 1 | /** |
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 | |||
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 | |||
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 | |||
46 | #include <string.h> |
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47 | |||
48 | #if LWIP_SNMP && SNMP_LWIP_MIB2 && LWIP_TCP |
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49 | |||
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 | |||
59 | /* --- tcp .1.3.6.1.2.1.6 ----------------------------------------------------- */ |
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60 | |||
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 | |||
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 | |||
143 | return 0; |
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144 | } |
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145 | |||
146 | /* --- tcpConnTable --- */ |
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147 | |||
148 | #if LWIP_IPV4 |
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149 | |||
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 | |||
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 | |||
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 | |||
199 | return SNMP_ERR_NOERROR; |
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200 | } |
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201 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
247 | pcb = pcb->next; |
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248 | } |
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249 | } |
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250 | |||
251 | /* not found */ |
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252 | return SNMP_ERR_NOSUCHINSTANCE; |
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253 | } |
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254 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
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 | |||
292 | pcb = pcb->next; |
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293 | } |
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294 | } |
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295 | |||
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 | |||
303 | /* not found */ |
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304 | return SNMP_ERR_NOSUCHINSTANCE; |
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305 | } |
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306 | |||
307 | #endif /* LWIP_IPV4 */ |
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308 | |||
309 | /* --- tcpConnectionTable --- */ |
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310 | |||
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 | |||
326 | return SNMP_ERR_NOERROR; |
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327 | } |
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328 | |||
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 | |||
339 | LWIP_UNUSED_ARG(value_len); |
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340 | |||
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 | |||
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 | |||
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 | |||
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 | |||
369 | /* not found */ |
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370 | return SNMP_ERR_NOSUCHINSTANCE; |
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371 | } |
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372 | |||
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 | |||
384 | LWIP_UNUSED_ARG(value_len); |
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385 | |||
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 | |||
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 | |||
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 */ |
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398 | idx += snmp_ip_port_to_oid(&pcb->local_ip, pcb->local_port, &test_oid[idx]); |
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399 | |||
400 | /* tcpConnectionRemAddressType + tcpConnectionRemAddress + tcpConnectionRemPort */ |
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401 | idx += snmp_ip_port_to_oid(&pcb->remote_ip, pcb->remote_port, &test_oid[idx]); |
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402 | |||
403 | /* check generated OID: is it a candidate for the next one? */ |
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404 | snmp_next_oid_check(&state, test_oid, idx, pcb); |
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405 | |||
406 | pcb = pcb->next; |
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407 | } |
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408 | } |
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409 | |||
410 | /* did we find a next one? */ |
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411 | if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { |
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412 | snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); |
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413 | /* fill in object properties */ |
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414 | return tcp_ConnectionTable_get_cell_value_core(column, (struct tcp_pcb *)state.reference, value); |
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415 | } else { |
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416 | /* not found */ |
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417 | return SNMP_ERR_NOSUCHINSTANCE; |
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418 | } |
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419 | } |
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420 | |||
421 | /* --- tcpListenerTable --- */ |
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422 | |||
423 | static snmp_err_t |
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424 | tcp_ListenerTable_get_cell_value_core(const u32_t *column, union snmp_variant_value *value) |
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425 | { |
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426 | /* all items except tcpListenerProcess are declared as not-accessible */ |
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427 | switch (*column) { |
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428 | case 4: /* tcpListenerProcess */ |
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429 | value->u32 = 0; /* not supported */ |
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430 | break; |
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431 | default: |
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432 | return SNMP_ERR_NOSUCHINSTANCE; |
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433 | } |
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434 | |||
435 | return SNMP_ERR_NOERROR; |
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436 | } |
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437 | |||
438 | static snmp_err_t |
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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) |
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440 | { |
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441 | ip_addr_t local_ip; |
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442 | u16_t local_port; |
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443 | struct tcp_pcb_listen *pcb; |
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444 | u8_t idx = 0; |
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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 */ |