ethernet.c

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#include "ethernet.h"
#include "ioforge/ioforge_nic.h"
#include "libk/serial.h"
#include <str.h>
#include "net/netdev.h"
#include <memory/memory_utils.h>
 
// TODO: handle race condition jika dipanggil di scheduler
void ethernet_send_frame(netdev_t* dev, struct netbuff* netbuff,
             uint16_t ethertype, const uint8_t dst_mac[6]) {
 
    struct ethernet_header* eth = (struct ethernet_header*) netbuff_push(
        netbuff, sizeof(struct ethernet_header));
 
    memcopy((void*) eth->dest_mac, (void*) dst_mac, 6);
    memcopy((void*) eth->src_mac, (void*) dev->mac, 6);
    eth->ethertype = ethertype;
 
    if (netbuff->length < 60) {
        // Tambahkan nol di belakang agar paket pas 60 byte
        size_t pad_len = 60 - netbuff->length;
        void* pad_area = netbuff_put(netbuff, pad_len);
        memset(pad_area, 0, pad_len);
    }
 
    uintptr_t current_paddr =
        netbuff->paddr + (uintptr_t) (netbuff->data - netbuff->head);
 
    struct data_template data[1];
    data[0] = (struct data_template){.buffer = (void*) current_paddr,
                     .len = netbuff->length,
                     .wait_next_data = false};
 
    //  TODO di dev ada ops sendiri buat send tidak langsung ke nic
    dev->nic->ops.send(data, 1);
}