BadVPN – Rev 1
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/**
* @file
* Management Information Base II (RFC1213) TCP objects and functions.
*/
/*
* Copyright (c) 2006 Axon Digital Design B.V., The Netherlands.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* Author: Dirk Ziegelmeier <dziegel@gmx.de>
* Christiaan Simons <christiaan.simons@axon.tv>
*/
#include "lwip/snmp.h"
#include "lwip/apps/snmp.h"
#include "lwip/apps/snmp_core.h"
#include "lwip/apps/snmp_mib2.h"
#include "lwip/apps/snmp_table.h"
#include "lwip/apps/snmp_scalar.h"
#include "lwip/tcp.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/stats.h"
#include <string.h>
#if LWIP_SNMP && SNMP_LWIP_MIB2 && LWIP_TCP
#if SNMP_USE_NETCONN
#define SYNC_NODE_NAME(node_name) node_name ## _synced
#define CREATE_LWIP_SYNC_NODE(oid, node_name) \
static const struct snmp_threadsync_node node_name ## _synced = SNMP_CREATE_THREAD_SYNC_NODE(oid, &node_name.node, &snmp_mib2_lwip_locks);
#else
#define SYNC_NODE_NAME(node_name) node_name
#define CREATE_LWIP_SYNC_NODE(oid, node_name)
#endif
/* --- tcp .1.3.6.1.2.1.6 ----------------------------------------------------- */
static s16_t
tcp_get_value(struct snmp_node_instance *instance, void *value)
{
u32_t *uint_ptr = (u32_t *)value;
s32_t *sint_ptr = (s32_t *)value;
switch (instance->node->oid) {
case 1: /* tcpRtoAlgorithm, vanj(4) */
*sint_ptr = 4;
return sizeof(*sint_ptr);
case 2: /* tcpRtoMin */
/* @todo not the actual value, a guess,
needs to be calculated */
*sint_ptr = 1000;
return sizeof(*sint_ptr);
case 3: /* tcpRtoMax */
/* @todo not the actual value, a guess,
needs to be calculated */
*sint_ptr = 60000;
return sizeof(*sint_ptr);
case 4: /* tcpMaxConn */
*sint_ptr = MEMP_NUM_TCP_PCB;
return sizeof(*sint_ptr);
case 5: /* tcpActiveOpens */
*uint_ptr = STATS_GET(mib2.tcpactiveopens);
return sizeof(*uint_ptr);
case 6: /* tcpPassiveOpens */
*uint_ptr = STATS_GET(mib2.tcppassiveopens);
return sizeof(*uint_ptr);
case 7: /* tcpAttemptFails */
*uint_ptr = STATS_GET(mib2.tcpattemptfails);
return sizeof(*uint_ptr);
case 8: /* tcpEstabResets */
*uint_ptr = STATS_GET(mib2.tcpestabresets);
return sizeof(*uint_ptr);
case 9: { /* tcpCurrEstab */
u16_t tcpcurrestab = 0;
struct tcp_pcb *pcb = tcp_active_pcbs;
while (pcb != NULL) {
if ((pcb->state == ESTABLISHED) ||
(pcb->state == CLOSE_WAIT)) {
tcpcurrestab++;
}
pcb = pcb->next;
}
*uint_ptr = tcpcurrestab;
}
return sizeof(*uint_ptr);
case 10: /* tcpInSegs */
*uint_ptr = STATS_GET(mib2.tcpinsegs);
return sizeof(*uint_ptr);
case 11: /* tcpOutSegs */
*uint_ptr = STATS_GET(mib2.tcpoutsegs);
return sizeof(*uint_ptr);
case 12: /* tcpRetransSegs */
*uint_ptr = STATS_GET(mib2.tcpretranssegs);
return sizeof(*uint_ptr);
case 14: /* tcpInErrs */
*uint_ptr = STATS_GET(mib2.tcpinerrs);
return sizeof(*uint_ptr);
case 15: /* tcpOutRsts */
*uint_ptr = STATS_GET(mib2.tcpoutrsts);
return sizeof(*uint_ptr);
#if LWIP_HAVE_INT64
case 17: { /* tcpHCInSegs */
/* use the 32 bit counter for now... */
u64_t val64 = STATS_GET(mib2.tcpinsegs);
*((u64_t *)value) = val64;
}
return sizeof(u64_t);
case 18: { /* tcpHCOutSegs */
/* use the 32 bit counter for now... */
u64_t val64 = STATS_GET(mib2.tcpoutsegs);
*((u64_t *)value) = val64;
}
return sizeof(u64_t);
#endif
default:
LWIP_DEBUGF(SNMP_MIB_DEBUG, ("tcp_get_value(): unknown id: %"S32_F"\n", instance->node->oid));
break;
}
return 0;
}
/* --- tcpConnTable --- */
#if LWIP_IPV4
/* list of allowed value ranges for incoming OID */
static const struct snmp_oid_range tcp_ConnTable_oid_ranges[] = {
{ 0, 0xff }, /* IP A */
{ 0, 0xff }, /* IP B */
{ 0, 0xff }, /* IP C */
{ 0, 0xff }, /* IP D */
{ 0, 0xffff }, /* Port */
{ 0, 0xff }, /* IP A */
{ 0, 0xff }, /* IP B */
{ 0, 0xff }, /* IP C */
{ 0, 0xff }, /* IP D */
{ 0, 0xffff } /* Port */
};
static snmp_err_t
tcp_ConnTable_get_cell_value_core(struct tcp_pcb *pcb, const u32_t *column, union snmp_variant_value *value, u32_t *value_len)
{
LWIP_UNUSED_ARG(value_len);
/* value */
switch (*column) {
case 1: /* tcpConnState */
value->u32 = pcb->state + 1;
break;
case 2: /* tcpConnLocalAddress */
value->u32 = ip_2_ip4(&pcb->local_ip)->addr;
break;
case 3: /* tcpConnLocalPort */
value->u32 = pcb->local_port;
break;
case 4: /* tcpConnRemAddress */
if (pcb->state == LISTEN) {
value->u32 = IP4_ADDR_ANY4->addr;
} else {
value->u32 = ip_2_ip4(&pcb->remote_ip)->addr;
}
break;
case 5: /* tcpConnRemPort */
if (pcb->state == LISTEN) {
value->u32 = 0;
} else {
value->u32 = pcb->remote_port;
}
break;
default:
LWIP_ASSERT("invalid id", 0);
return SNMP_ERR_NOSUCHINSTANCE;
}
return SNMP_ERR_NOERROR;
}
static snmp_err_t
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)
{
u8_t i;
ip4_addr_t local_ip;
ip4_addr_t remote_ip;
u16_t local_port;
u16_t remote_port;
struct tcp_pcb *pcb;
/* check if incoming OID length and if values are in plausible range */
if (!snmp_oid_in_range(row_oid, row_oid_len, tcp_ConnTable_oid_ranges, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges))) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* get IPs and ports from incoming OID */
snmp_oid_to_ip4(&row_oid[0], &local_ip); /* we know it succeeds because of oid_in_range check above */
local_port = (u16_t)row_oid[4];
snmp_oid_to_ip4(&row_oid[5], &remote_ip); /* we know it succeeds because of oid_in_range check above */
remote_port = (u16_t)row_oid[9];
/* find tcp_pcb with requested ips and ports */
for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_lists); i++) {
pcb = *tcp_pcb_lists[i];
while (pcb != NULL) {
/* do local IP and local port match? */
if (IP_IS_V4_VAL(pcb->local_ip) &&
ip4_addr_cmp(&local_ip, ip_2_ip4(&pcb->local_ip)) && (local_port == pcb->local_port)) {
/* PCBs in state LISTEN are not connected and have no remote_ip or remote_port */
if (pcb->state == LISTEN) {
if (ip4_addr_cmp(&remote_ip, IP4_ADDR_ANY4) && (remote_port == 0)) {
/* fill in object properties */
return tcp_ConnTable_get_cell_value_core(pcb, column, value, value_len);
}
} else {
if (IP_IS_V4_VAL(pcb->remote_ip) &&
ip4_addr_cmp(&remote_ip, ip_2_ip4(&pcb->remote_ip)) && (remote_port == pcb->remote_port)) {
/* fill in object properties */
return tcp_ConnTable_get_cell_value_core(pcb, column, value, value_len);
}
}
}
pcb = pcb->next;
}
}
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
static snmp_err_t
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)
{
u8_t i;
struct tcp_pcb *pcb;
struct snmp_next_oid_state state;
u32_t result_temp[LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges)];
/* init struct to search next oid */
snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges));
/* iterate over all possible OIDs to find the next one */
for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_lists); i++) {
pcb = *tcp_pcb_lists[i];
while (pcb != NULL) {
u32_t test_oid[LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges)];
if (IP_IS_V4_VAL(pcb->local_ip)) {
snmp_ip4_to_oid(ip_2_ip4(&pcb->local_ip), &test_oid[0]);
test_oid[4] = pcb->local_port;
/* PCBs in state LISTEN are not connected and have no remote_ip or remote_port */
if (pcb->state == LISTEN) {
snmp_ip4_to_oid(IP4_ADDR_ANY4, &test_oid[5]);
test_oid[9] = 0;
} else {
if (IP_IS_V6_VAL(pcb->remote_ip)) { /* should never happen */
continue;
}
snmp_ip4_to_oid(ip_2_ip4(&pcb->remote_ip), &test_oid[5]);
test_oid[9] = pcb->remote_port;
}
/* check generated OID: is it a candidate for the next one? */
snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(tcp_ConnTable_oid_ranges), pcb);
}
pcb = pcb->next;
}
}
/* did we find a next one? */
if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
/* fill in object properties */
return tcp_ConnTable_get_cell_value_core((struct tcp_pcb *)state.reference, column, value, value_len);
}
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
#endif /* LWIP_IPV4 */
/* --- tcpConnectionTable --- */
static snmp_err_t
tcp_ConnectionTable_get_cell_value_core(const u32_t *column, struct tcp_pcb *pcb, union snmp_variant_value *value)
{
/* all items except tcpConnectionState and tcpConnectionProcess are declared as not-accessible */
switch (*column) {
case 7: /* tcpConnectionState */
value->u32 = pcb->state + 1;
break;
case 8: /* tcpConnectionProcess */
value->u32 = 0; /* not supported */
break;
default:
return SNMP_ERR_NOSUCHINSTANCE;
}
return SNMP_ERR_NOERROR;
}
static snmp_err_t
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)
{
ip_addr_t local_ip, remote_ip;
u16_t local_port, remote_port;
struct tcp_pcb *pcb;
u8_t idx = 0;
u8_t i;
struct tcp_pcb **const tcp_pcb_nonlisten_lists[] = {&tcp_bound_pcbs, &tcp_active_pcbs, &tcp_tw_pcbs};
LWIP_UNUSED_ARG(value_len);
/* tcpConnectionLocalAddressType + tcpConnectionLocalAddress + tcpConnectionLocalPort */
idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &local_ip, &local_port);
if (idx == 0) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* tcpConnectionRemAddressType + tcpConnectionRemAddress + tcpConnectionRemPort */
idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &remote_ip, &remote_port);
if (idx == 0) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* find tcp_pcb with requested ip and port*/
for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_nonlisten_lists); i++) {
pcb = *tcp_pcb_nonlisten_lists[i];
while (pcb != NULL) {
if (ip_addr_cmp(&local_ip, &pcb->local_ip) &&
(local_port == pcb->local_port) &&
ip_addr_cmp(&remote_ip, &pcb->remote_ip) &&
(remote_port == pcb->remote_port)) {
/* fill in object properties */
return tcp_ConnectionTable_get_cell_value_core(column, pcb, value);
}
pcb = pcb->next;
}
}
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
static snmp_err_t
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)
{
struct tcp_pcb *pcb;
struct snmp_next_oid_state state;
/* 1x tcpConnectionLocalAddressType + 1x OID len + 16x tcpConnectionLocalAddress + 1x tcpConnectionLocalPort
* 1x tcpConnectionRemAddressType + 1x OID len + 16x tcpConnectionRemAddress + 1x tcpConnectionRemPort */
u32_t result_temp[38];
u8_t i;
struct tcp_pcb **const tcp_pcb_nonlisten_lists[] = {&tcp_bound_pcbs, &tcp_active_pcbs, &tcp_tw_pcbs};
LWIP_UNUSED_ARG(value_len);
/* init struct to search next oid */
snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(result_temp));
/* iterate over all possible OIDs to find the next one */
for (i = 0; i < LWIP_ARRAYSIZE(tcp_pcb_nonlisten_lists); i++) {
pcb = *tcp_pcb_nonlisten_lists[i];
while (pcb != NULL) {
u8_t idx = 0;
u32_t test_oid[LWIP_ARRAYSIZE(result_temp)];
/* tcpConnectionLocalAddressType + tcpConnectionLocalAddress + tcpConnectionLocalPort */
idx += snmp_ip_port_to_oid(&pcb->local_ip, pcb->local_port, &test_oid[idx]);
/* tcpConnectionRemAddressType + tcpConnectionRemAddress + tcpConnectionRemPort */
idx += snmp_ip_port_to_oid(&pcb->remote_ip, pcb->remote_port, &test_oid[idx]);
/* check generated OID: is it a candidate for the next one? */
snmp_next_oid_check(&state, test_oid, idx, pcb);
pcb = pcb->next;
}
}
/* did we find a next one? */
if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
/* fill in object properties */
return tcp_ConnectionTable_get_cell_value_core(column, (struct tcp_pcb *)state.reference, value);
} else {
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
}
/* --- tcpListenerTable --- */
static snmp_err_t
tcp_ListenerTable_get_cell_value_core(const u32_t *column, union snmp_variant_value *value)
{
/* all items except tcpListenerProcess are declared as not-accessible */
switch (*column) {
case 4: /* tcpListenerProcess */
value->u32 = 0; /* not supported */
break;
default:
return SNMP_ERR_NOSUCHINSTANCE;
}
return SNMP_ERR_NOERROR;
}
static snmp_err_t
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)
{
ip_addr_t local_ip;
u16_t local_port;
struct tcp_pcb_listen *pcb;
u8_t idx = 0;
LWIP_UNUSED_ARG(value_len);
/* tcpListenerLocalAddressType + tcpListenerLocalAddress + tcpListenerLocalPort */
idx += snmp_oid_to_ip_port(&row_oid[idx], row_oid_len - idx, &local_ip, &local_port);
if (idx == 0) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* find tcp_pcb with requested ip and port*/
pcb = tcp_listen_pcbs.listen_pcbs;
while (pcb != NULL) {
if (ip_addr_cmp(&local_ip, &pcb->local_ip) &&
(local_port == pcb->local_port)) {
/* fill in object properties */
return tcp_ListenerTable_get_cell_value_core(column, value);
}
pcb = pcb->next;
}
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
static snmp_err_t
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)
{
struct tcp_pcb_listen *pcb;
struct snmp_next_oid_state state;
/* 1x tcpListenerLocalAddressType + 1x OID len + 16x tcpListenerLocalAddress + 1x tcpListenerLocalPort */
u32_t result_temp[19];
LWIP_UNUSED_ARG(value_len);
/* init struct to search next oid */
snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(result_temp));
/* iterate over all possible OIDs to find the next one */
pcb = tcp_listen_pcbs.listen_pcbs;
while (pcb != NULL) {
u8_t idx = 0;
u32_t test_oid[LWIP_ARRAYSIZE(result_temp)];
/* tcpListenerLocalAddressType + tcpListenerLocalAddress + tcpListenerLocalPort */
idx += snmp_ip_port_to_oid(&pcb->local_ip, pcb->local_port, &test_oid[idx]);
/* check generated OID: is it a candidate for the next one? */
snmp_next_oid_check(&state, test_oid, idx, NULL);
pcb = pcb->next;
}
/* did we find a next one? */
if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
/* fill in object properties */
return tcp_ListenerTable_get_cell_value_core(column, value);
} else {
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
}
static const struct snmp_scalar_node tcp_RtoAlgorithm = SNMP_SCALAR_CREATE_NODE_READONLY(1, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
static const struct snmp_scalar_node tcp_RtoMin = SNMP_SCALAR_CREATE_NODE_READONLY(2, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
static const struct snmp_scalar_node tcp_RtoMax = SNMP_SCALAR_CREATE_NODE_READONLY(3, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
static const struct snmp_scalar_node tcp_MaxConn = SNMP_SCALAR_CREATE_NODE_READONLY(4, SNMP_ASN1_TYPE_INTEGER, tcp_get_value);
static const struct snmp_scalar_node tcp_ActiveOpens = SNMP_SCALAR_CREATE_NODE_READONLY(5, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_PassiveOpens = SNMP_SCALAR_CREATE_NODE_READONLY(6, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_AttemptFails = SNMP_SCALAR_CREATE_NODE_READONLY(7, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_EstabResets = SNMP_SCALAR_CREATE_NODE_READONLY(8, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_CurrEstab = SNMP_SCALAR_CREATE_NODE_READONLY(9, SNMP_ASN1_TYPE_GAUGE, tcp_get_value);
static const struct snmp_scalar_node tcp_InSegs = SNMP_SCALAR_CREATE_NODE_READONLY(10, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_OutSegs = SNMP_SCALAR_CREATE_NODE_READONLY(11, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_RetransSegs = SNMP_SCALAR_CREATE_NODE_READONLY(12, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_InErrs = SNMP_SCALAR_CREATE_NODE_READONLY(14, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
static const struct snmp_scalar_node tcp_OutRsts = SNMP_SCALAR_CREATE_NODE_READONLY(15, SNMP_ASN1_TYPE_COUNTER, tcp_get_value);
#if LWIP_HAVE_INT64
static const struct snmp_scalar_node tcp_HCInSegs = SNMP_SCALAR_CREATE_NODE_READONLY(17, SNMP_ASN1_TYPE_COUNTER64, tcp_get_value);
static const struct snmp_scalar_node tcp_HCOutSegs = SNMP_SCALAR_CREATE_NODE_READONLY(18, SNMP_ASN1_TYPE_COUNTER64, tcp_get_value);
#endif
#if LWIP_IPV4
static const struct snmp_table_simple_col_def tcp_ConnTable_columns[] = {
{ 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnState */
{ 2, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnLocalAddress */
{ 3, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnLocalPort */
{ 4, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnRemAddress */
{ 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpConnRemPort */
};
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);
#endif /* LWIP_IPV4 */
static const struct snmp_table_simple_col_def tcp_ConnectionTable_columns[] = {
/* all items except tcpConnectionState and tcpConnectionProcess are declared as not-accessible */
{ 7, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* tcpConnectionState */
{ 8, SNMP_ASN1_TYPE_UNSIGNED32, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpConnectionProcess */
};
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);
static const struct snmp_table_simple_col_def tcp_ListenerTable_columns[] = {
/* all items except tcpListenerProcess are declared as not-accessible */
{ 4, SNMP_ASN1_TYPE_UNSIGNED32, SNMP_VARIANT_VALUE_TYPE_U32 } /* tcpListenerProcess */
};
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);
/* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */
CREATE_LWIP_SYNC_NODE( 1, tcp_RtoAlgorithm)
CREATE_LWIP_SYNC_NODE( 2, tcp_RtoMin)
CREATE_LWIP_SYNC_NODE( 3, tcp_RtoMax)
CREATE_LWIP_SYNC_NODE( 4, tcp_MaxConn)
CREATE_LWIP_SYNC_NODE( 5, tcp_ActiveOpens)
CREATE_LWIP_SYNC_NODE( 6, tcp_PassiveOpens)
CREATE_LWIP_SYNC_NODE( 7, tcp_AttemptFails)
CREATE_LWIP_SYNC_NODE( 8, tcp_EstabResets)
CREATE_LWIP_SYNC_NODE( 9, tcp_CurrEstab)
CREATE_LWIP_SYNC_NODE(10, tcp_InSegs)
CREATE_LWIP_SYNC_NODE(11, tcp_OutSegs)
CREATE_LWIP_SYNC_NODE(12, tcp_RetransSegs)
#if LWIP_IPV4
CREATE_LWIP_SYNC_NODE(13, tcp_ConnTable)
#endif /* LWIP_IPV4 */
CREATE_LWIP_SYNC_NODE(14, tcp_InErrs)
CREATE_LWIP_SYNC_NODE(15, tcp_OutRsts)
#if LWIP_HAVE_INT64
CREATE_LWIP_SYNC_NODE(17, tcp_HCInSegs)
CREATE_LWIP_SYNC_NODE(18, tcp_HCOutSegs)
#endif
CREATE_LWIP_SYNC_NODE(19, tcp_ConnectionTable)
CREATE_LWIP_SYNC_NODE(20, tcp_ListenerTable)
static const struct snmp_node *const tcp_nodes[] = {
&SYNC_NODE_NAME(tcp_RtoAlgorithm).node.node,
&SYNC_NODE_NAME(tcp_RtoMin).node.node,
&SYNC_NODE_NAME(tcp_RtoMax).node.node,
&SYNC_NODE_NAME(tcp_MaxConn).node.node,
&SYNC_NODE_NAME(tcp_ActiveOpens).node.node,
&SYNC_NODE_NAME(tcp_PassiveOpens).node.node,
&SYNC_NODE_NAME(tcp_AttemptFails).node.node,
&SYNC_NODE_NAME(tcp_EstabResets).node.node,
&SYNC_NODE_NAME(tcp_CurrEstab).node.node,
&SYNC_NODE_NAME(tcp_InSegs).node.node,
&SYNC_NODE_NAME(tcp_OutSegs).node.node,
&SYNC_NODE_NAME(tcp_RetransSegs).node.node,
#if LWIP_IPV4
&SYNC_NODE_NAME(tcp_ConnTable).node.node,
#endif /* LWIP_IPV4 */
&SYNC_NODE_NAME(tcp_InErrs).node.node,
&SYNC_NODE_NAME(tcp_OutRsts).node.node,
&SYNC_NODE_NAME(tcp_HCInSegs).node.node,
#if LWIP_HAVE_INT64
&SYNC_NODE_NAME(tcp_HCOutSegs).node.node,
&SYNC_NODE_NAME(tcp_ConnectionTable).node.node,
#endif
&SYNC_NODE_NAME(tcp_ListenerTable).node.node
};
const struct snmp_tree_node snmp_mib2_tcp_root = SNMP_CREATE_TREE_NODE(6, tcp_nodes);
#endif /* LWIP_SNMP && SNMP_LWIP_MIB2 && LWIP_TCP */