struct gdb_transport *gdbudp_configure ( const char *name, struct sockaddr_in *addr ) {
struct settings *settings;
/* Release old network device */
netdev_put ( netdev );
netdev = find_netdev ( name );
if ( !netdev ) {
return NULL;
}
/* Hold network device */
netdev_get ( netdev );
/* Source UDP port */
source_addr.sin_port = ( addr && addr->sin_port ) ? addr->sin_port : htons ( DEFAULT_PORT );
/* Source IP address */
if ( addr && addr->sin_addr.s_addr ) {
source_addr.sin_addr.s_addr = addr->sin_addr.s_addr;
} else {
settings = netdev_settings ( netdev );
fetch_ipv4_setting ( settings, &ip_setting, &source_addr.sin_addr );
if ( source_addr.sin_addr.s_addr == 0 ) {
netdev_put ( netdev );
netdev = NULL;
return NULL;
}
}
return &udp_gdb_transport;
}
/**
* Set network device as current PXE network device
*
* @v netdev Network device, or NULL
*/
void pxe_set_netdev ( struct net_device *netdev ) {
if ( pxe_netdev )
netdev_put ( pxe_netdev );
pxe_netdev = NULL;
if ( netdev )
pxe_netdev = netdev_get ( netdev );
}
/**
* Execute PXE image
*
* @v image PXE image
* @ret rc Return status code
*/
static int pxe_exec ( struct image *image ) {
userptr_t buffer = real_to_user ( 0, 0x7c00 );
struct net_device *netdev;
int rc;
/* Verify and prepare segment */
if ( ( rc = prep_segment ( buffer, image->len, image->len ) ) != 0 ) {
DBGC ( image, "IMAGE %p could not prepare segment: %s\n",
image, strerror ( rc ) );
return rc;
}
/* Copy image to segment */
memcpy_user ( buffer, 0, image->data, 0, image->len );
/* Arbitrarily pick the most recently opened network device */
if ( ( netdev = last_opened_netdev() ) == NULL ) {
DBGC ( image, "IMAGE %p could not locate PXE net device\n",
image );
return -ENODEV;
}
netdev_get ( netdev );
/* Activate PXE */
pxe_activate ( netdev );
/* Construct fake DHCP packets */
pxe_fake_cached_info();
/* Set PXE command line */
pxe_cmdline = image->cmdline;
/* Reset console since PXE NBP will probably use it */
console_reset();
/* Disable IRQ, if applicable */
if ( netdev_irq_supported ( netdev ) && netdev->dev->desc.irq )
disable_irq ( netdev->dev->desc.irq );
/* Start PXE NBP */
rc = pxe_start_nbp();
/* Clear PXE command line */
pxe_cmdline = NULL;
/* Deactivate PXE */
pxe_deactivate();
/* Try to reopen network device. Ignore errors, since the NBP
* may have called PXENV_STOP_UNDI.
*/
netdev_open ( netdev );
netdev_put ( netdev );
return rc;
}
/**
* Set network device as current PXE network device
*
* @v netdev Network device, or NULL
*/
void pxe_set_netdev ( struct net_device *netdev ) {
if ( pxe_netdev ) {
netdev_rx_unfreeze ( pxe_netdev );
netdev_put ( pxe_netdev );
}
pxe_netdev = NULL;
if ( netdev )
pxe_netdev = netdev_get ( netdev );
}
