netxduo
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Outline
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#define NX_SOURCE_CODE
#include "nx_api.h"
#include "nx_ipv6.h"
#include "nx_nd_cache.h"
#include "nx_icmpv6.h"
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_nxd_ipv6_default_router_delete(NX_IP *, NXD_ADDRESS *)
Files
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SourceVuSTM32 Libraries and Samplesnetxduocommon/src/nxd_ipv6_default_router_delete.c
 
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/**************************************************************************/ /* */ /* Copyright (c) Microsoft Corporation. All rights reserved. */ /* */ /* This software is licensed under the Microsoft Software License */ /* Terms for Microsoft Azure RTOS. Full text of the license can be */ /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ /* and in the root directory of this software. */ /* */... /**************************************************************************/ /**************************************************************************/ /**************************************************************************/ /** */ /** NetX Component */ /** */ /** Internet Protocol version 6 Default Router Table (IPv6 router) */ /** */... /**************************************************************************/ /**************************************************************************/ #define NX_SOURCE_CODE /* Include necessary system files. */ #include "nx_api.h" #include "nx_ipv6.h" #ifdef FEATURE_NX_IPV6 #include "nx_nd_cache.h" #include "nx_icmpv6.h" /* ... */#endif /* FEATURE_NX_IPV6 */ ... /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _nxd_ipv6_default_router_delete PORTABLE C */ /* 6.1 */ /* AUTHOR */ /* */ /* Yuxin Zhou, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function deletes an IPv6 routing table entry. */ /* */ /* INPUT */ /* */ /* ip_ptr Pointer to IP control block */ /* router_addr Pointer to router address to */ /* delete */ /* */ /* OUTPUT */ /* */ /* NX_SUCCESS Successful completion status */ /* */ /* CALLS */ /* */ /* tx_mutex_get Obtain protection mutex */ /* tx_mutex_put Release protection mutex */ /* */ /* CALLED BY */ /* */ /* Application Code */ /* */ /* RELEASE HISTORY */ /* */ /* DATE NAME DESCRIPTION */ /* */ /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */ /* 09-30-2020 Yuxin Zhou Modified comment(s), */ /* resulting in version 6.1 */ /* */... /**************************************************************************/ UINT _nxd_ipv6_default_router_delete(NX_IP *ip_ptr, NXD_ADDRESS *router_address) { #ifdef FEATURE_NX_IPV6 INT i; NX_IPV6_DEFAULT_ROUTER_ENTRY *rt_entry; NX_TRACE_IN_LINE_INSERT(NXD_TRACE_IPV6_DEFAULT_ROUTER_DELETE, ip_ptr, router_address -> nxd_ip_address.v6[3], 0, 0, NX_TRACE_IP_EVENTS, 0, 0); /* Obtain protection on this IP instance for access into the default router table. */ tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER); /* If our default route table is empty, just return */ if (ip_ptr -> nx_ipv6_default_router_table_size == 0) { /* Release the mutex. */ tx_mutex_put(&(ip_ptr -> nx_ip_protection)); return(NX_SUCCESS); }if (ip_ptr -> nx_ipv6_default_router_table_size == 0) { ... } /* Search the entire table for a matching entry. */ for (i = 0; i < NX_IPV6_DEFAULT_ROUTER_TABLE_SIZE; i++) { /*Set local pointer for convenience. */ rt_entry = &ip_ptr -> nx_ipv6_default_router_table[i]; /* Does this slot contain a router? */ if (rt_entry -> nx_ipv6_default_router_entry_flag & NX_IPV6_ROUTE_TYPE_VALID) { /* Does it match the router address to search for? */ if (CHECK_IPV6_ADDRESSES_SAME(router_address -> nxd_ip_address.v6, rt_entry -> nx_ipv6_default_router_entry_router_address)) { /* Yes, does it have a pointer into the cache table? */ if (rt_entry -> nx_ipv6_default_router_entry_neighbor_cache_ptr) { /* Clear the router status. This will enable the entry to time out eventually. *//* ... */ rt_entry -> nx_ipv6_default_router_entry_neighbor_cache_ptr -> nx_nd_cache_is_router = NX_NULL; }if (rt_entry -> nx_ipv6_default_router_entry_neighbor_cache_ptr) { ... } /* Clean any entries in the destination table for this router. */ _nx_invalidate_destination_entry(ip_ptr, rt_entry -> nx_ipv6_default_router_entry_router_address); /* Mark the entry as empty. */ rt_entry -> nx_ipv6_default_router_entry_flag = 0; /* Clear the interface pointer .*/ rt_entry -> nx_ipv6_default_router_entry_interface_ptr = NX_NULL; /* Decrease the count of available routers. */ ip_ptr -> nx_ipv6_default_router_table_size--; /* Release the mutex. */ tx_mutex_put(&(ip_ptr -> nx_ip_protection)); return(NX_SUCCESS); }if (CHECK_IPV6_ADDRESSES_SAME(router_address -> nxd_ip_address.v6, rt_entry -> nx_ipv6_default_router_entry_router_address)) { ... } }if (rt_entry -> nx_ipv6_default_router_entry_flag & NX_IPV6_ROUTE_TYPE_VALID) { ... } }for (i = 0; i < NX_IPV6_DEFAULT_ROUTER_TABLE_SIZE; i++) { ... } /* Release the mutex. */ tx_mutex_put(&(ip_ptr -> nx_ip_protection)); return(NX_NOT_FOUND); /* ... */ #else /* !FEATURE_NX_IPV6 */ NX_PARAMETER_NOT_USED(ip_ptr); NX_PARAMETER_NOT_USED(router_address); return(NX_NOT_SUPPORTED); /* ... */ #endif /* FEATURE_NX_IPV6 */ }{ ... }
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