ospf_link_state_advertisements.c

vxworks下ospf协议栈

                    }
                sptr_old_router_link_advertisement = table_malloc(1, opaque_lsa_size);
                if (sptr_old_router_link_advertisement != NULL)
                    {
                    memset(sptr_old_router_link_advertisement, 0x00, opaque_lsa_size);
                    memcpy ((void *) sptr_old_router_link_advertisement, (const void *)sptr_new_router_link_advertisement, opaque_lsa_size);
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)opaque_lsa, opaque_lsa_size);

                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = 0x0000;
                    sptr_new_router_link_advertisement->ls_header.checksum = ospf_generate_LS_checksum ((void *) sptr_new_router_link_advertisement, (USHORT)opaque_lsa_size,
                        (BYTE *) &sptr_new_router_link_advertisement->ls_header.checksum);
                    checksum = sptr_new_router_link_advertisement->ls_header.checksum;
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)sptr_old_router_link_advertisement, opaque_lsa_size);
                    table_free(sptr_old_router_link_advertisement);
                    sptr_old_router_link_advertisement = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = checksum;
                    }
                else
                    {
                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    }
                }
            }
        else if (sptr_database_entry->advertisement.sptr_router->ls_header.type == OSPF_LS_TYPE_10)
            {
            sptr_type_10_link_advertisement = (OSPF_TYPE_10_LINK_ADVERTISEMENT_HEADER *)sptr_new_router_link_advertisement;


            sptr_type_10_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                sptr_database_entry->advertisement.sptr_type_10->ls_header.sequence_number);
            sptr_type_10_link_advertisement->ls_header.age = 0x0000;
            sptr_type_10_link_advertisement->ls_header.options._byte = sptr_database_entry->advertisement.sptr_type_10->ls_header.options._byte;
            sptr_type_10_link_advertisement->ls_header.type = sptr_database_entry->advertisement.sptr_type_10->ls_header.type;
            sptr_type_10_link_advertisement->ls_header.id.lsid = sptr_database_entry->advertisement.sptr_type_10->ls_header.id.lsid;

            data_size = sptr_database_entry->advertisement.sptr_type_10->ls_header.length;
            data_size = net_to_host_short(data_size);
            data_size = (USHORT)(data_size - OSPF_LS_HEADER_SIZE);

            if ((sptr_database_entry->advertisement.sptr_type_10->data != NULL) && (data_size > 0))
                {
                sptr_type_10_link_advertisement->data = table_malloc(1, data_size);
                if (sptr_type_10_link_advertisement->data == NULL)
                    {
                    ospf_print_memory_error_message_and_free_buffer_if_necessary ((void *) sptr_new_router_link_advertisement, "OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER");
                    return;
                    }
                memcpy(sptr_type_10_link_advertisement->data, sptr_database_entry->advertisement.sptr_type_10->data, data_size);
                }

            sptr_type_10_link_advertisement->ls_header.advertising_router = sptr_database_entry->advertisement.sptr_type_10->ls_header.advertising_router;

            sptr_type_10_link_advertisement->ls_header.length = sptr_database_entry->advertisement.sptr_type_10->ls_header.length;

            opaque_ls_header_size = sizeof(OSPF_LS_OPAQUE_HEADER);

            opaque_lsa_size = (USHORT)(data_size + opaque_ls_header_size);
            opaque_lsa = (OSPF_LS_OPAQUE_HEADER *) table_malloc(1, opaque_lsa_size);
            if (opaque_lsa != NULL)
                {
                memset(opaque_lsa, 0x00, opaque_lsa_size);
                memcpy(opaque_lsa, &(sptr_type_10_link_advertisement->ls_header), opaque_ls_header_size);
                if ((sptr_type_10_link_advertisement->data != NULL) && (data_size > 0))
                    {
                    memcpy(((BYTE *)(opaque_lsa)+opaque_ls_header_size), sptr_type_10_link_advertisement->data, data_size);
                    }
                sptr_old_router_link_advertisement = table_malloc(1, opaque_lsa_size);
                if (sptr_old_router_link_advertisement != NULL)
                    {
                    memset(sptr_old_router_link_advertisement, 0x00, opaque_lsa_size);
                    memcpy ((void *) sptr_old_router_link_advertisement, (const void *)sptr_new_router_link_advertisement, opaque_lsa_size);
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)opaque_lsa, opaque_lsa_size);

                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = 0x0000;
                    sptr_new_router_link_advertisement->ls_header.checksum = ospf_generate_LS_checksum ((void *) sptr_new_router_link_advertisement, (USHORT)opaque_lsa_size,
                        (BYTE *) &sptr_new_router_link_advertisement->ls_header.checksum);
                    checksum = sptr_new_router_link_advertisement->ls_header.checksum;
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)sptr_old_router_link_advertisement, opaque_lsa_size);
                    table_free(sptr_old_router_link_advertisement);
                    sptr_old_router_link_advertisement = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = checksum;
                    }
                else
                    {
                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    }
                }
            }
        else if (sptr_database_entry->advertisement.sptr_router->ls_header.type == OSPF_LS_TYPE_11)
            {
            sptr_type_11_link_advertisement = (OSPF_TYPE_11_LINK_ADVERTISEMENT_HEADER *)sptr_new_router_link_advertisement;

            sptr_type_11_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                sptr_database_entry->advertisement.sptr_type_11->ls_header.sequence_number);


            if ((sptr_new_router_link_advertisement->ls_header.type == OSPF_LS_TYPE_11) && (first_pass_external == TRUE))
                {
                sptr_type_11_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                    sptr_database_entry->advertisement.sptr_type_11->ls_header.sequence_number);
                }
            else if ((sptr_new_router_link_advertisement->ls_header.type == OSPF_LS_TYPE_11) && (first_pass_external == FALSE))
                {
                sptr_type_11_link_advertisement->ls_header.sequence_number = sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number;
                }
            sptr_type_11_link_advertisement->ls_header.age = 0x0000;
            sptr_type_11_link_advertisement->ls_header.options._byte = sptr_database_entry->advertisement.sptr_type_11->ls_header.options._byte;
            sptr_type_11_link_advertisement->ls_header.type = sptr_database_entry->advertisement.sptr_type_11->ls_header.type;
            sptr_type_11_link_advertisement->ls_header.id.lsid = sptr_database_entry->advertisement.sptr_type_11->ls_header.id.lsid;

            data_size = sptr_database_entry->advertisement.sptr_type_11->ls_header.length;
            data_size = net_to_host_short(data_size);
            data_size = (USHORT)(data_size - OSPF_LS_HEADER_SIZE);

            if ((sptr_database_entry->advertisement.sptr_type_11->data != NULL) && (data_size > 0))
                {
                sptr_type_11_link_advertisement->data = table_malloc(1, data_size);
                if (sptr_type_11_link_advertisement->data == NULL)
                    {
                    ospf_print_memory_error_message_and_free_buffer_if_necessary ((void *) sptr_new_router_link_advertisement, "OSPF_ROUTER_LINK_ADVERTISEMENT_HEADER");
                    return;
                    }
                memcpy(sptr_type_11_link_advertisement->data, sptr_database_entry->advertisement.sptr_type_11->data, data_size);
                }

            sptr_type_11_link_advertisement->ls_header.advertising_router = sptr_database_entry->advertisement.sptr_type_11->ls_header.advertising_router;

            sptr_type_11_link_advertisement->ls_header.length = sptr_database_entry->advertisement.sptr_type_11->ls_header.length;

            opaque_ls_header_size = sizeof(OSPF_LS_OPAQUE_HEADER);

            opaque_lsa_size = (USHORT)(data_size + opaque_ls_header_size);
            opaque_lsa = (OSPF_LS_OPAQUE_HEADER *) table_malloc(1, opaque_lsa_size);
            if (opaque_lsa != NULL)
                {
                memset(opaque_lsa, 0x00, opaque_lsa_size);
                memcpy(opaque_lsa, &(sptr_type_11_link_advertisement->ls_header), opaque_ls_header_size);
                if ((sptr_type_11_link_advertisement->data != NULL) && (data_size > 0))
                    {
                    memcpy(((BYTE *)(opaque_lsa)+opaque_ls_header_size), sptr_type_11_link_advertisement->data, data_size);
                    }
                sptr_old_router_link_advertisement = table_malloc(1, opaque_lsa_size);
                if (sptr_old_router_link_advertisement != NULL)
                    {
                    memset(sptr_old_router_link_advertisement, 0x00, opaque_lsa_size);
                    memcpy ((void *) sptr_old_router_link_advertisement, (const void *)sptr_new_router_link_advertisement, opaque_lsa_size);
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)opaque_lsa, opaque_lsa_size);

                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = 0x0000;
                    sptr_new_router_link_advertisement->ls_header.checksum = ospf_generate_LS_checksum ((void *) sptr_new_router_link_advertisement, (USHORT)opaque_lsa_size,
                        (BYTE *) &sptr_new_router_link_advertisement->ls_header.checksum);
                    checksum = sptr_new_router_link_advertisement->ls_header.checksum;
                    memcpy ((void *) sptr_new_router_link_advertisement, (const void *)sptr_old_router_link_advertisement, opaque_lsa_size);
                    table_free(sptr_old_router_link_advertisement);
                    sptr_old_router_link_advertisement = NULL;
                    sptr_new_router_link_advertisement->ls_header.checksum = checksum;
                    }
                else
                    {
                    table_free(opaque_lsa);
                    opaque_lsa = NULL;
                    }
                }
            }
        else
            {
            memcpy ((void *) sptr_new_router_link_advertisement, (const void *) sptr_database_entry->advertisement.sptr_router,
                (size_t) length);
            if ((sptr_new_router_link_advertisement->ls_header.type == OSPF_LS_AS_EXTERNAL) && (first_pass_external == TRUE))
                {
            sptr_new_router_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number);
                }
            else if ((sptr_new_router_link_advertisement->ls_header.type == OSPF_LS_AS_EXTERNAL) && (first_pass_external == FALSE))
                {
           /* Fix TSR #287037, SPR# 83500 Begin */
            sptr_new_router_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number);
            /* Fix TSR #287037, SPR# 83500 End */
                }
            else
                {
                sptr_new_router_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
                    sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number);
                }

            sptr_new_router_link_advertisement->ls_header.age = 0x0000;

            length = sptr_new_router_link_advertisement->ls_header.length;
            length = net_to_host_short (length);

            sptr_new_router_link_advertisement->ls_header.checksum = 0x0000;
            sptr_new_router_link_advertisement->ls_header.checksum = ospf_generate_LS_checksum ((void *) (sptr_new_router_link_advertisement),
                length, (BYTE *) &sptr_new_router_link_advertisement->ls_header.checksum);
            }
#else /* __OPAQUE_LSA__ */
        memcpy ((void *) sptr_new_router_link_advertisement, (const void *) sptr_database_entry->advertisement.sptr_router,
            (size_t) length);

        sptr_new_router_link_advertisement->ls_header.sequence_number = ospf_increment_sequence_number (
            sptr_database_entry->advertisement.sptr_router->ls_header.sequence_number);

        sptr_new_router_link_advertisement->ls_header.age = 0x0000;

        length = sptr_new_router_link_advertisement->ls_header.length;
        length = net_to_host_short (length);

        sptr_new_router_link_advertisement->ls_header.checksum = 0x0000;
        sptr_new_router_link_advertisement->ls_header.checksum = ospf_generate_LS_checksum ((void *) (sptr_new_router_link_advertisement),
            length, (BYTE *) &sptr_new_router_link_advertisement->ls_header.checksum);

#endif /* __OPAQUE_LSA__ */
        sptr_advertisement = (UNION_OSPF_LINK_STATE_ADVERTISEMENT *) table_malloc (1, sizeof (ULONG));

        if (sptr_advertisement == NULL)
            {
            ospf_print_memory_error_message_and_free_buffer_if_necessary ((void *) sptr_new_router_link_advertisement, "UNION_OSPF_LINK_STATE_ADVERTISEMENT");
            return;
            }
        else
            {
            memset (sptr_advertisement , 0x0, sizeof (ULONG));
            }

        sptr_advertisement->sptr_router = sptr_new_router_link_advertisement;

        OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF,"OSPF NEW INSTANCE OF LINK STATE ADVERTISEMENT \r\n");

        switch( sptr_advertisement->sptr_router->ls_header.type )
        {
#if defined(__OPAQUE_LSA__)
            case OSPF_LS_TYPE_9:
            case OSPF_LS_TYPE_10:
            case OSPF_LS_TYPE_11:
                ospf.wrnOspfGeneralGroupEntry.wrnOspfOriginateNewOpaqueLsas++;
                break;
#endif /* __OPAQUE_LSA__ */

            case OSPF_LS_AS_EXTERNAL:
            case OSPF_LS_ROUTER:
            case OSPF_LS_NETWORK:
            case OSPF_LS_SUMMARY_NETWORK:
            case OSPF_LS_SUMMARY_AS_BOUNDARY_ROUTER:
#if defined(__NSSA__)
            case OSPF_LS_MULTICAST:
            case OSPF_LS_TYPE_7:
#endif /* __NSSA__ */
                 ospf.ospfGeneralGroupEntry.ospfOriginateNewLsas++;
                 break;

            case OSPF_LS_ROUTER_ABR:
            case OSPF_LS_ROUTER_ASBR: