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move packet allocation to recv code to allow bigger buffers

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-07-08 20:38:12 +02:00
parent 6a1af81a97
commit e2955971a3
7 changed files with 105 additions and 55 deletions
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22
grub-core/net/drivers/ieee1275/ofnet.c
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@ -73,25 +73,35 @@ send_card_buffer (const struct grub_net_card *dev, struct grub_net_buff *pack)
return GRUB_ERR_NONE;
}
static grub_ssize_t
get_card_packet (const struct grub_net_card *dev, struct grub_net_buff *nb)
static struct grub_net_buff *
get_card_packet (const struct grub_net_card *dev)
{
grub_ssize_t actual;
int rc;
struct grub_ofnetcard_data *data = dev->data;
grub_uint64_t start_time;
struct grub_net_buff *nb;
grub_netbuff_clear (nb);
nb = grub_netbuff_alloc (dev->mtu + 64);
/* Reserve 2 bytes so that 2 + 14/18 bytes of ethernet header is divisible
by 4. So that IP header is aligned on 4 bytes. */
grub_netbuff_reserve (nb, 2);
if (!nb)
{
grub_netbuff_free (nb);
return NULL;
}
start_time = grub_get_time_ms ();
do
rc = grub_ieee1275_read (data->handle, nb->data, dev->mtu, &actual);
rc = grub_ieee1275_read (data->handle, nb->data, dev->mtu + 64, &actual);
while ((actual <= 0 || rc < 0) && (grub_get_time_ms () - start_time < 200));
if (actual)
{
grub_netbuff_put (nb, actual);
return actual;
return nb;
}
return -1;
grub_netbuff_free (nb);
return NULL;
}
static struct grub_net_card_driver ofdriver =