Lncvrt/grub
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Adaptation for the new protocols and interface structs.

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implementation of receive in the protocols.
Also all unwanted packets are discarded.
This commit is contained in:
Manoel R. Abranches committed 2010-06-21 19:15:45 -03:00
1 parent c3639ae731
commit 60cdb895da
9 files changed
+505 -226
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net/netbuff.c
+34 -7
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@@ -26,7 +26,7 @@ grub_err_t grub_netbuff_put (struct grub_net_buff *net_buff ,grub_size_t len)
{
net_buff->tail += len;
if (net_buff->tail > net_buff->end)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of the packet range.");
return grub_error (GRUB_ERR_OUT_OF_RANGE, "put out of the packet range.");
return GRUB_ERR_NONE;
}
@@ -34,15 +34,20 @@ grub_err_t grub_netbuff_unput (struct grub_net_buff *net_buff ,grub_size_t len)
{
net_buff->tail -= len;
if (net_buff->tail < net_buff->head)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of the packet range.");
return grub_error (GRUB_ERR_OUT_OF_RANGE, "unput out of the packet range.");
return GRUB_ERR_NONE;
}
grub_err_t grub_netbuff_push (struct grub_net_buff *net_buff ,grub_size_t len)
{
net_buff->data -= len;
/* grub_printf("push len =%d\n",len);
grub_printf("pack->head =%x\n",(unsigned int)net_buff->head);
grub_printf("pack->data =%x\n",(unsigned int)net_buff->data);
grub_printf("pack->tail =%x\n",(unsigned int)net_buff->tail);
grub_printf("pack->end =%x\n",(unsigned int)net_buff->end);*/
if (net_buff->data < net_buff->head)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of the packet range.");
return grub_error (GRUB_ERR_OUT_OF_RANGE, "push out of the packet range.");
return GRUB_ERR_NONE;
}
@@ -50,7 +55,7 @@ grub_err_t grub_netbuff_pull (struct grub_net_buff *net_buff ,grub_size_t len)
{
net_buff->data += len;
if (net_buff->data > net_buff->end)
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of the packet range.");
return grub_error (GRUB_ERR_OUT_OF_RANGE, "pull out of the packet range.");
return GRUB_ERR_NONE;
}
@@ -59,14 +64,36 @@ grub_err_t grub_netbuff_reserve (struct grub_net_buff *net_buff ,grub_size_t len
net_buff->data += len;
net_buff->tail += len;
if ((net_buff->tail > net_buff->end) || (net_buff->data > net_buff->end))
return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of the packet range.");
return grub_error (GRUB_ERR_OUT_OF_RANGE, "reserve out of the packet range.");
return GRUB_ERR_NONE;
}
struct grub_net_buff * grub_netbuff_alloc ( grub_size_t len )
struct grub_net_buff *grub_netbuff_alloc ( grub_size_t len )
{
struct grub_net_buff *nb;
void *data;
if (len < NETBUFFMINLEN)
len = NETBUFFMINLEN;
len = ALIGN_UP (len,NETBUFF_ALIGN);
return (struct grub_net_buff *) grub_memalign (len,NETBUFF_ALIGN);
data = grub_memalign (len + sizeof (*nb),NETBUFF_ALIGN);
nb = (struct grub_net_buff *) ((int)data + len);
nb->head = nb->data = nb->tail = data;
nb->end = (char *) nb;
return nb;
}
grub_err_t grub_netbuff_free (struct grub_net_buff *net_buff)
{
grub_free (net_buff);
return 0;
}
grub_err_t grub_netbuff_clear (struct grub_net_buff *net_buff)
{
net_buff->data = net_buff->tail = net_buff->head;
return 0;
}