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Added support for supported loopback mode for port object #2325

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Added support for supported loopback mode for port object #2325

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8 changes: 8 additions & 0 deletions inc/saiport.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3481,6 +3481,14 @@ typedef enum _sai_port_attr_t
*/
SAI_PORT_ATTR_APSU_ISL_READY,

/**
  * @brief Query list of supported port loopback modes for the port
  *
  * @type sai_s32_list_t sai_port_loopback_mode_t
  * @flags READ_ONLY
  */
  SAI_PORT_ATTR_SUPPORTED_LOOPBACK_MODE,

@JaiOCP JaiOCP Jul 29, 2026

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How would the local port know the remote end behavior?
/** Port loopback at PHY remote end */
SAI_PORT_LOOPBACK_MODE_PHY_REMOTE,

/** Port loopback at MAC remote end */
SAI_PORT_LOOPBACK_MODE_MAC_REMOTE

@pdhruv-marvell pdhruv-marvell Aug 5, 2026

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@JaiOCP
The remote loopback mode is configured on the local port, not on the remote device. When enabled, the local port loops back traffic received from the remote link partner back toward that same link partner, effectively emulating loopback behavior at the remote end.
For additional context, this behavior was introduced as part of the original remote loopback mode contribution: #1234


/**
* @brief End of attributes
*/
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