//! RDMA transport configuration

use serde::{Deserialize, Serialize};

/// RDMA transport configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RdmaConfig {
    /// Device name (e.g., "mlx5_0")
    pub device_name: Option<String>,
    /// Port number on the device
    pub port_num: u8,
    /// GID index for RoCE
    pub gid_index: u8,
    /// Maximum number of send work requests
    pub max_send_wr: u32,
    /// Maximum number of receive work requests
    pub max_recv_wr: u32,
    /// Maximum scatter/gather entries per work request
    pub max_sge: u32,
    /// Maximum inline data size
    pub max_inline_data: u32,
    /// Completion queue size
    pub cq_size: u32,
    /// Enable GPU Direct RDMA
    pub enable_gdr: bool,
    /// Poll timeout in microseconds
    pub poll_timeout_us: u64,
    /// Number of completion queue polling threads
    pub num_cq_poll_threads: usize,
}

impl Default for RdmaConfig {
    fn default() -> Self {
        Self {
            device_name: None, // Auto-detect
            port_num: 1,
            gid_index: 0,
            max_send_wr: 1024,
            max_recv_wr: 1024,
            max_sge: 4,
            max_inline_data: 256,
            cq_size: 4096,
            enable_gdr: true,
            poll_timeout_us: 1000,
            num_cq_poll_threads: 1,
        }
    }
}