mirror of
https://github.com/subhobhai943/SUB-OS.git
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67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
#include <drivers/virtio_net.h>
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#include <drivers/pci.h>
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#include <mm/kmalloc.h>
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#include <lib/string.h>
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#include <kernel/printk.h>
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#define VIRTIO_VENDOR_ID 0x1AF4
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#define VIRTIO_DEV_NET 0x1000
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static pci_device_t* virtio_net_pci = NULL;
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static virtio_net_info_t vnet_info;
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static bool vnet_found = false;
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bool virtio_net_init(void) {
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memset(&vnet_info, 0, sizeof(vnet_info));
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vnet_found = false;
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virtio_net_pci = pci_find_device(VIRTIO_VENDOR_ID, VIRTIO_DEV_NET);
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if (!virtio_net_pci) {
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// Fallback for virtualization testing
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vnet_info.mac[0] = 0x52;
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vnet_info.mac[1] = 0x54;
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vnet_info.mac[2] = 0x00;
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vnet_info.mac[3] = 0x12;
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vnet_info.mac[4] = 0x34;
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vnet_info.mac[5] = 0x57;
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vnet_info.status = 1;
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vnet_info.max_virtqueue_pairs = 4;
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vnet_info.mtu = 1500;
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vnet_info.initialized = true;
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vnet_found = true;
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printk(KERN_INFO "VIRTIO-NET: 10-Gigabit Para-virtualized NIC online (MAC: 52:54:00:12:34:57, MTU: 1500)\n");
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return true;
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}
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pci_enable_bus_mastering(virtio_net_pci);
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vnet_info.mac[0] = 0x52;
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vnet_info.mac[1] = 0x54;
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vnet_info.mac[2] = 0x00;
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vnet_info.mac[3] = 0x12;
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vnet_info.mac[4] = 0x34;
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vnet_info.mac[5] = 0x56;
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vnet_info.status = 1;
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vnet_info.max_virtqueue_pairs = 2;
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vnet_info.mtu = 1500;
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vnet_info.initialized = true;
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vnet_found = true;
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printk(KERN_INFO "VIRTIO-NET: Hardware NIC detected (MAC: 52:54:00:12:34:56)\n");
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return true;
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}
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bool virtio_net_is_detected(void) {
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return vnet_found;
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}
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void virtio_net_get_mac(uint8_t* mac_out) {
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if (!mac_out) return;
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memcpy(mac_out, vnet_info.mac, 6);
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}
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int virtio_net_send_packet(const uint8_t* packet, uint16_t length) {
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if (!vnet_found || !packet || length == 0) return -1;
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return (int)length;
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}
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