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[undi] Fill in ProtType correctly in PXENV_UNDI_ISR

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Determine the network-layer packet type and fill it in for UNDI
clients.  This is required by some NBPs such as emBoot's winBoot/i.

This change requires refactoring the link-layer portions of the
gPXE netdevice API, so that it becomes possible to strip the
link-layer header without passing the packet up the network stack.
This commit is contained in:
Michael Brown
2008-08-20 03:21:37 +01:00
parent f6f6f626f7
commit 30fb3b3810
5 changed files with 145 additions and 65 deletions
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28
src/net/netdevice.c
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@@ -439,6 +439,7 @@ struct net_device * find_netdev_by_location ( unsigned int bus_type,
*/
int net_tx ( struct io_buffer *iobuf, struct net_device *netdev,
struct net_protocol *net_protocol, const void *ll_dest ) {
int rc;
/* Force a poll on the netdevice to (potentially) clear any
* backed-up TX completions. This is needed on some network
@@ -447,7 +448,15 @@ int net_tx ( struct io_buffer *iobuf, struct net_device *netdev,
*/
netdev_poll ( netdev );
return netdev->ll_protocol->tx ( iobuf, netdev, net_protocol, ll_dest );
/* Add link-layer header */
if ( ( rc = netdev->ll_protocol->push ( iobuf, netdev, net_protocol,
ll_dest ) ) != 0 ) {
free_iob ( iobuf );
return rc;
}
/* Transmit packet */
return netdev_tx ( netdev, iobuf );
}
/**
@@ -485,6 +494,10 @@ int net_rx ( struct io_buffer *iobuf, struct net_device *netdev,
static void net_step ( struct process *process __unused ) {
struct net_device *netdev;
struct io_buffer *iobuf;
struct ll_protocol *ll_protocol;
uint16_t net_proto;
const void *ll_source;
int rc;
/* Poll and process each network device */
list_for_each_entry ( netdev, &net_devices, list ) {
@@ -499,10 +512,21 @@ static void net_step ( struct process *process __unused ) {
* NIC faster than they arrive.
*/
if ( ( iobuf = netdev_rx_dequeue ( netdev ) ) ) {
DBGC ( netdev, "NETDEV %p processing %p (%p+%zx)\n",
netdev, iobuf, iobuf->data,
iob_len ( iobuf ) );
netdev->ll_protocol->rx ( iobuf, netdev );
/* Remove link-layer header */
ll_protocol = netdev->ll_protocol;
if ( ( rc = ll_protocol->pull ( iobuf, netdev,
&net_proto,
&ll_source ) ) != 0 ) {
free_iob ( iobuf );
continue;
}
net_rx ( iobuf, netdev, net_proto, ll_source );
}
}
}