diff options
Diffstat (limited to 'lwip/port/include/netif/hurdtunif.h')
-rw-r--r-- | lwip/port/include/netif/hurdtunif.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/lwip/port/include/netif/hurdtunif.h b/lwip/port/include/netif/hurdtunif.h new file mode 100644 index 00000000..938465bb --- /dev/null +++ b/lwip/port/include/netif/hurdtunif.h @@ -0,0 +1,65 @@ +/* + Copyright (C) 2017 Free Software Foundation, Inc. + Written by Joan Lledó. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with the GNU Hurd. If not, see <http://www.gnu.org/licenses/>. +*/ + +/* Tunnel devices module */ + +#ifndef LWIP_HURDTUNIF_H +#define LWIP_HURDTUNIF_H + +#include <hurd/ports.h> + +#include <lwip/netif.h> +#include <netif/ifcommon.h> + +/* Queue of data in the tunnel */ +struct pbufqueue +{ + struct pbuf *head; + struct pbuf **tail; + uint8_t len; +}; + +/* Extension of the common device interface to store tunnel metadata */ +struct hurdtunif +{ + struct ifcommon comm; + + struct trivfs_control *cntl; /* Identify the tunnel device in use */ + file_t underlying; /* Underlying node where the tunnel is bound */ + struct iouser *user; /* Restrict the access to one user at a time */ + struct pbufqueue queue; /* Output queue */ + + /* Concurrent access to the queue */ + pthread_mutex_t lock; + pthread_cond_t read; + pthread_cond_t select; + uint8_t read_blocked; +}; + +struct port_class *tunnel_cntlclass; +struct port_class *tunnel_class; + +/* Device initialization */ +error_t hurdtunif_device_init (struct netif *netif); + +/* Module initialization */ +error_t hurdtunif_module_init (); + +#endif /* LWIP_HURDTUNIF_H */ |