# addFilter

Source: [https://docs.qualcomm.com/doc/80-PK177-134/topic/add_filter.html](https://docs.qualcomm.com/doc/80-PK177-134/topic/add_filter.html)

Adds a new filter to the system and applies the provided uplink/downlink levels, PDCP timer, and OOD value.

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## Parameters

| Parameters | API type | Data type | Description |
| --- | --- | --- | --- |
| srcIp | Java | String | Source IP address |
| srcIp | Native | const char\* | Source IP address |
| dstIp | Java | String | Destination IP address |
| dstIp | Native | const char\* | Destination IP address |
| srcPort | Java | int | Source port |
| srcPort | Native | uint16\_t | Source port |
| dstPort | Java | int | Destination port |
| dstPort | Native | uint16\_t | Destination port |
| protocol | Java | protocolEnum | [Protocol](https://docs.qualcomm.com/doc/80-PK177-134/topic/llm_filter_protocol.html) |
| protocol | Native | llm\_protocolEnum | [Protocol](https://docs.qualcomm.com/doc/80-PK177-134/topic/llm_filter_protocol.html) |
| dscp | Java | int | DSCP value (0-255) |
| dscp | Native | uint8\_t | DSCP value (0-255) |
| uplink | Java | level | Latency [level](https://docs.qualcomm.com/doc/80-PK177-134/topic/level.html) to be set on<br>                uplink |
| uplink | Native | llm\_level | Latency [level](https://docs.qualcomm.com/doc/80-PK177-134/topic/level.html) to be set on<br>                uplink |
| downlink | Java | level | Latency [level](https://docs.qualcomm.com/doc/80-PK177-134/topic/level.html) to be set on<br>                downlink |
| downlink | Native | llm\_level | Latency [level](https://docs.qualcomm.com/doc/80-PK177-134/topic/level.html) to be set on<br>                downlink |
| pdcpTimer | Java | long | PDCP timer value |
| pdcpTimer | Native | uint32\_t | PDCP timer value |
| ood | Java | oodEnum | [OOD value](https://docs.qualcomm.com/doc/80-PK177-134/topic/ood.html) |
| ood | Native | llm\_oodEnum | [OOD value](https://docs.qualcomm.com/doc/80-PK177-134/topic/ood.html) |
| addFilterCallback | Java | IfilterStatus | Callback providing the filter ID ([Filter status](https://docs.qualcomm.com/doc/80-PK177-134/topic/filter_status.html)) |
| addFilterCallback | Native | llm\_filterStatus | Callback providing the filter ID ([Filter status](https://docs.qualcomm.com/doc/80-PK177-134/topic/filter_status.html)) |
| ret | Native | int8\_t& | On success this is the actual return value from the API.<br><br><br>                <br><ul class="ul"><br>                    <li class="li">1: Success</li><br><br>                    <li class="li">-1: Iqesdk is NULL</li><br><br>                    <li class="li">-2: Subsystem error</li><br><br>                  </ul> |
|  |  |  |  |

## Returns

| **Return** | **API type** | **Data type** | **Description** |
| --- | --- | --- | --- |
| response | Java | int | <ul class="ul" id="concept.dita_2bbe2707-fbec-4041-a19c-931fc95983f4__ul_sy1_t4x_vyb_spyrz_09-20-23-1542-23-993"><br>                  <li class="li">1: Success</li><br><br>                  <li class="li">-1: Iqesdk is NULL</li><br><br>                  <li class="li">-2: Subsystem error</li><br><br>                </ul> |
| response | Native | qesdk\_transaction\_status | See [QESDK transaction status for Native APIs](https://docs.qualcomm.com/doc/80-PK177-134/topic/native_qesdk_class.html) for usage details. Use qesdk\_transaction\_status to confirm API call invocation. If successful, use the `ret` value for the actual API return value object. |
|  |  |  |  |

Note: Any kind of functional error will report via callback function.

**Parent Topic:** [LLM subsystem APIs](https://docs.qualcomm.com/doc/80-PK177-134/topic/llm_functions.html)

Last Published: Nov 14, 2024

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