rio_sport_is_active
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## Name

rio_sport_is_active — Tests if a switch port has an active connection.

## Synopsis

`int rio_sport_is_active (` | struct rio_mport * port,
| u16 destid,
| u8 hopcount,
| int sport`)`;

## Arguments

`port`

  Master port to send transaction

`destid`

  Associated destination ID for switch

`hopcount`

  Hopcount to reach switch

`sport`

  Switch port number

## Description

Reads the port error status CSR for a particular switch port to determine if the port has an active link. Returns `RIO_PORT_N_ERR_STS_PORT_OK` if the port is active or `0` if it is inactive.

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