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networking in grub-emu

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-22 17:14:43 +02:00
parent 6b1b3423dd
commit 90451bb1c9
3 changed files with 80 additions and 1 deletions
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6
grub-core/Makefile.core.def
View file

@ -1398,3 +1398,9 @@ module = {
ieee1275 = net/drivers/ieee1275/ofnet.c;
enable = ieee1275;
};
module = {
name = emunet;
emu = net/drivers/emu/emunet.c;
enable = ieee1275;
};

69
grub-core/net/drivers/emu/emunet.c Normal file
View file

@ -0,0 +1,69 @@
#include <grub/net/netbuff.h>
#include <sys/socket.h>
#include <netpacket/packet.h>
#include <net/ethernet.h> /* the L2 protocols */
#include <grub/net.h>
static grub_err_t
card_open (struct grub_net_card *dev)
{
dev->data_num = socket (AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
if (dev->data_num < 0)
return grub_error (GRUB_ERR_IO, "couldn't open packet interface");
return GRUB_ERR_NONE;
}
static grub_err_t
card_close (struct grub_net_card *dev)
{
close (dev->data_num);
return GRUB_ERR_NONE;
}
static grub_err_t
send_card_buffer (struct grub_net_card *dev, struct grub_net_buff *pack)
{
ssize_t actual;
actual = write (dev->data_num, pack->data, pack->tail - pack->data);
if (actual < 0)
return grub_error (GRUB_ERR_IO, "couldn't send packets");
return GRUB_ERR_NONE;
}
static grub_err_t
get_card_packet (struct grub_net_card *dev, struct grub_net_buff *pack)
{
ssize_t actual;
grub_netbuff_clear(pack);
actual = read (dev->data_num, pack->data, 1500);
if (actual < 0)
return grub_error (GRUB_ERR_IO, "couldn't receive packets");
grub_netbuff_put (pack, actual);
return GRUB_ERR_NONE;
}
static struct grub_net_card_driver emudriver =
{
.name = "emu",
.init = card_open,
.fini = card_close,
.send = send_card_buffer,
.recv = get_card_packet
};
GRUB_MOD_INIT(emunet)
{
grub_net_card_driver_register (&emudriver);
}
GRUB_MODE_FINI(emunet)
{
grub_net_card_driver_unregister (&emudriver);
}

4
include/grub/net.h
View file

@ -84,7 +84,11 @@ struct grub_net_card
struct grub_net_card_driver *driver;
grub_net_link_level_address_t default_address;
grub_net_card_flags_t flags;
union
{
void *data;
int data_num;
};
};
struct grub_net_network_level_interface;