c
// ... (previous code)

// Get the size of the txqs.txq array
size_t txq_array_size = sizeof(trans->txqs.txq) / sizeof(trans->txqs.txq[0]);

// Check if txq_id is within the valid range
if (txq_id >= 0 && txq_id < txq_array_size) {
    txq = trans->txqs.txq[txq_id]; 
    // ... rest of the code
} else {
    // Handle invalid txq_id (e.g., log an error, return an error code)
} 
