ioforge_nic.h

Go to the documentation of this file.

#ifndef __SYS__IOFORGE__IOFORGE_NIC_H__
#define __SYS__IOFORGE__IOFORGE_NIC_H__
 
#include "ioforge/ioforge.h"
#include <type.h>
 
#define MAX_NICS 8    /* maksimum NIC yang bisa didaftarkan */
#define NIC_MAC_LEN 6 /* panjang MAC address (bytes)        */
#define PENDING_QUEUE_SIZE 128
#define PENDING_QUEUE_MASK (PENDING_QUEUE_SIZE - 1)
#define BUFFER_POOL_SIZE 1280
#define BUFFER_POOL_MASK (BUFFER_POOL_SIZE - 1)
 
// untuk scatter gather pattern
struct data_template {
    const void* buffer;
    size_t len;
    uint8_t wait_next_data;
};
 
struct ioforge_nic_operation {
    int (*send)(const struct data_template data[], size_t count);
    int (*receive)(void** buffer, size_t* size); // buat pooling
    int (*get_mac_address)(uint8_t mac[NIC_MAC_LEN]);
    void (*storeBufferToPool)(int rx_id, void* vaddr);
};
 
typedef enum {
    Ready = 2,
    Bussy = 1,
    Unready = 0,
    Halted = -2,
} IoforgeNICStatus;
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct pending_rx {
    int rx_id;
    uint8_t* data;
    size_t len;
};
 
struct rx_buffer {
    void* vaddr;
    uintptr_t paddr;
};
 
struct rx_buffer_pool {
    struct rx_buffer buffers[BUFFER_POOL_SIZE];
    //  posisi terdepan buffer yang digunakan
    uint32_t head;
    // posisi terbelakang buffer yang sudah selesai digunakan
    uint32_t tail;
};
 
struct ioforge_nic_service {
    struct ioforge_device service;
    struct ioforge_nic_operation ops;
    IoforgeNICStatus status;
    struct pending_rx pending_queue[PENDING_QUEUE_SIZE];
    uint32_t pq_head;
    uint32_t pq_tail;
};
 
void ioforge_register_nic(struct ioforge_nic_service* nic);
void ioforge_nic_rx(struct ioforge_nic_service* nic, uint8_t* buffer,
            size_t len, int rx_id);
struct ioforge_nic_service* IOforgeNICFindByName(char* name);
 
int ioforge_receive_pending_queue(struct ioforge_nic_service* nic,
                  struct pending_rx* rx);
 
// jangan lupa clear rx setelah di consume
void ioforge_clear_rx_queue(struct ioforge_nic_service* nic,
                struct pending_rx* rx);
 
#ifdef __cplusplus
}
#endif
#endif // __SYS__IOFORGE__IOFORGE_NIC_H__