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basic tcp implementation

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-07-10 08:46:48 +02:00
parent 92bb3cfc17
commit 3a7af37260
12 changed files with 802 additions and 27 deletions
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19
grub-core/net/tftp.c
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@ -207,7 +207,6 @@ tftp_receive (grub_net_udp_socket_t sock __attribute__ ((unused)),
return GRUB_ERR_NONE;
nb_top = *nb_top_p;
tftph = (struct tftphdr *) nb_top->data;
grub_refresh ();
if (grub_be_to_cpu16 (tftph->u.data.block) >= data->block + 1)
break;
grub_priority_queue_pop (data->pq);
@ -279,6 +278,7 @@ tftp_open (struct grub_file *file, const char *filename)
struct grub_net_buff nb;
tftp_data_t data;
grub_err_t err;
grub_uint8_t *nbd;
data = grub_zalloc (sizeof (*data));
if (!data)
@ -344,21 +344,11 @@ tftp_open (struct grub_file *file, const char *filename)
return grub_errno;
}
err = grub_net_send_udp_packet (data->sock, &nb);
if (err)
{
grub_net_udp_close (data->sock);
destroy_pq (data);
return err;
}
/* Receive OACK packet. */
nbd = nb.data;
for (i = 0; i < 3; i++)
{
grub_net_poll_cards (100);
if (data->have_oack)
break;
/* Retry. */
nb.data = nbd;
err = grub_net_send_udp_packet (data->sock, &nb);
if (err)
{
@ -366,6 +356,9 @@ tftp_open (struct grub_file *file, const char *filename)
destroy_pq (data);
return err;
}
grub_net_poll_cards (100);
if (data->have_oack)
break;
}
if (!data->have_oack)