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some more ipv6 code

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-10-12 10:20:55 +02:00
parent d5e60b1ba0
commit a53cf6534d
12 changed files with 528 additions and 60 deletions
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23
grub-core/net/icmp.c
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@ -25,13 +25,13 @@ struct icmp_header
grub_uint8_t type;
grub_uint8_t code;
grub_uint16_t checksum;
};
} __attribute__ ((packed));
struct ping_header
{
grub_uint16_t id;
grub_uint16_t seq;
};
} __attribute__ ((packed));
enum
{
@ -40,7 +40,7 @@ enum
};
grub_err_t
grub_net_recv_icmp_packet (struct grub_net_buff * nb,
grub_net_recv_icmp_packet (struct grub_net_buff *nb,
struct grub_net_network_level_interface *inf,
const grub_net_network_level_address_t *src)
{
@ -48,15 +48,28 @@ grub_net_recv_icmp_packet (struct grub_net_buff * nb,
grub_err_t err;
grub_uint16_t checksum;
/* Ignore broadcast. */
if (!inf)
{
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
icmph = (struct icmp_header *) nb->data;
if (nb->tail - nb->data < (grub_ssize_t) sizeof (*icmph))
return grub_error (GRUB_ERR_OUT_OF_RANGE, "ICMP packet too small");
{
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
checksum = icmph->checksum;
icmph->checksum = 0;
if (checksum != grub_net_ip_chksum (nb->data, nb->tail - nb->data))
return GRUB_ERR_NONE;
{
icmph->checksum = checksum;
return GRUB_ERR_NONE;
}
icmph->checksum = checksum;
err = grub_netbuff_pull (nb, sizeof (*icmph));