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This commit is contained in:
Manoel Rebelo Abranches 2011-06-07 21:59:53 -03:00
parent 423a1849ef
commit 4700d08bb4
8 changed files with 307 additions and 288 deletions
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28
grub-core/net/ethernet.c
View file

@ -8,25 +8,25 @@
#include <grub/time.h>
#include <grub/net/arp.h>
grub_err_t
grub_err_t
send_ethernet_packet (struct grub_net_network_level_interface *inf,
struct grub_net_buff *nb,
grub_net_link_level_address_t target_addr,
grub_uint16_t ethertype)
{
struct etherhdr *eth;
struct etherhdr *eth;
grub_netbuff_push (nb,sizeof(*eth));
eth = (struct etherhdr *) nb->data;
grub_memcpy(eth->dst, target_addr.mac, 6);
grub_memcpy(eth->src, inf->hwaddress.mac, 6);
grub_netbuff_push (nb, sizeof (*eth));
eth = (struct etherhdr *) nb->data;
grub_memcpy (eth->dst, target_addr.mac, 6);
grub_memcpy (eth->src, inf->hwaddress.mac, 6);
eth->type = grub_cpu_to_be16 (ethertype);
return inf->card->driver->send (inf->card, nb);
}
grub_err_t
grub_err_t
grub_net_recv_ethernet_packet (struct grub_net_buff *nb)
{
struct etherhdr *eth;
@ -34,32 +34,32 @@ grub_net_recv_ethernet_packet (struct grub_net_buff *nb)
struct snaphdr *snaph;
grub_uint16_t type;
eth = (struct etherhdr *) nb->data;
eth = (struct etherhdr *) nb->data;
type = grub_be_to_cpu16 (eth->type);
grub_netbuff_pull (nb, sizeof (*eth));
if (type <= 1500)
{
llch = (struct llchdr *) nb->data;
type = llch->dsap & LLCADDRMASK;
if (llch->dsap == 0xaa && llch->ssap == 0xaa && llch->ctrl == 0x3)
{
grub_netbuff_pull (nb,sizeof(*llch));
{
grub_netbuff_pull (nb, sizeof (*llch));
snaph = (struct snaphdr *) nb->data;
type = snaph->type;
}
}
/* ARP packet */
/* ARP packet. */
if (type == GRUB_NET_ETHERTYPE_ARP)
{
grub_net_arp_receive (nb);
grub_netbuff_free (nb);
}
/* IP packet */
/* IP packet. */
if (type == GRUB_NET_ETHERTYPE_IP)
grub_net_recv_ip_packets (nb);
return GRUB_ERR_NONE;
return GRUB_ERR_NONE;
}