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https://github.com/apache/nuttx.git
synced 2026-05-21 13:13:08 +08:00
Add TUN device. From Max Neklyudov
This commit is contained in:
Gregory Nutt
@@ -67,6 +67,10 @@ ifeq ($(CONFIG_NET_SLIP),y)
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CSRCS += slip.c
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endif
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ifeq ($(CONFIG_NET_TUN),y)
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CSRCS += tun.c
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endif
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ifeq ($(CONFIG_ARCH_PHY_INTERRUPT),y)
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CSRCS += phy_notify.c
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endif
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+1252
File diff suppressed because it is too large
Load Diff
@@ -73,7 +73,8 @@ enum net_lltype_e
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{
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NET_LL_ETHERNET = 0, /* Ethernet */
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NET_LL_SLIP, /* Serial Line Internet Protocol (SLIP) */
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NET_LL_PPP /* Point-to-Point Protocol (PPP) */
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NET_LL_PPP, /* Point-to-Point Protocol (PPP) */
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NET_LL_TUN, /* TUN Virtual Network Device */
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};
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/* This defines a bitmap big enough for one bit for each socket option */
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@@ -0,0 +1,104 @@
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/****************************************************************************
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* include/nuttx/net/tun.h
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*
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* Copyright (C) 2015 Max Nekludov. All rights reserved.
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* Author : Max Nekludov <macscomp@gmail.com>
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*
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* Includes some definitions that a compatible with the LGPL GNU C Library
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* header file of the same name.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NET_TUN_H
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#define __INCLUDE_NUTTX_NET_TUN_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/net/ioctl.h>
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#ifdef CONFIG_NET_TUN
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define TUNSETIFF _SIOC(0x1001)
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/* TUNSETIFF ifr flags */
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#define IFF_TUN 0x0001
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Function: tun_initialize
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*
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* Description:
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* Instantiate a SLIP network interface.
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*
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* Parameters:
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*
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* Returned Value:
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* OK on success; Negated errno on failure.
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*
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* Assumptions:
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*
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****************************************************************************/
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int tun_initialize(void);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_NET_TUN */
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#endif /* __INCLUDE_NUTTX_NET_TUN_H */
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+36
@@ -102,6 +102,17 @@ config NET_SLIP_TCP_RECVWNDO
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incoming data, or high (32768 bytes) if the application processes
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data quickly.
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config NET_TUN_MTU
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int "TUN packet buffer size (MTU)"
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default 296
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depends on NET_TUN
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range 296 1518
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config NET_TUN_TCP_RECVWNDO
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int "TUN TCP receive window size"
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default 256
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depends on NET_TUN && NET_TCP
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config NET_GUARDSIZE
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int "Driver I/O guard size"
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default 2
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@@ -121,6 +132,13 @@ config NET_MULTILINK
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bool
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default n
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config NET_USER_DEVFMT
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bool "User provided devfmt"
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default n
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depends on EXPERIMENTAL
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---help---
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netdev_register will get devfmt form d_ifname if it is initialized.
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config NET_ETHERNET
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bool "Ethernet support"
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default y if !NET_SLIP
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@@ -179,6 +197,24 @@ config SLIP_DEFPRIO
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The priority of the SLIP RX and TX tasks. Default: 128
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endif # NET_SLIP
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config NET_TUN
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bool "TUN Virtual Network Device support"
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default n
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if NET_TUN
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config TUN_NINTERFACES
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int "Number of TUN interfaces"
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default 1
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range 1 8
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---help---
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Selects the number of TUN
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interfaces to support.
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Default: 1
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endif # NET_TUN
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endmenu # Data link support
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source "net/netdev/Kconfig"
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@@ -62,6 +62,7 @@
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#define NETDEV_SLIP_FORMAT "sl%d"
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#define NETDEV_ETH_FORMAT "eth%d"
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#define NETDEV_TUN_FORMAT "tun%d"
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#if defined(CONFIG_NET_SLIP)
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# define NETDEV_DEFAULT_FORMAT NETDEV_SLIP_FORMAT
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@@ -171,6 +172,9 @@ static int find_devnum(FAR const char *devfmt)
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int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
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{
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FAR const char *devfmt;
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#ifdef CONFIG_NET_USER_DEVFMT
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FAR const char devfmt_str[IFNAMSIZ];
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#endif
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int devnum;
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if (dev)
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@@ -206,6 +210,17 @@ int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
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break;
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#endif
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#ifdef CONFIG_NET_TUN
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case NET_LL_TUN: /* Virtual Network Device (TUN) */
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dev->d_llhdrlen = 0;
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dev->d_mtu = CONFIG_NET_TUN_MTU;
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#ifdef CONFIG_NET_TCP
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dev->d_recvwndo = CONFIG_NET_TUN_TCP_RECVWNDO;
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#endif
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devfmt = NETDEV_TUN_FORMAT;
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break;
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#endif
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#if 0 /* REVISIT: Not yet supported */
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case NET_LL_PPP: /* Point-to-Point Protocol (PPP) */
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dev->d_llhdrlen = 0;
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@@ -242,6 +257,14 @@ int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
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#else
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devnum = g_next_devnum++;
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#endif
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#ifdef CONFIG_NET_USER_DEVFMT
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if (*dev->d_ifname)
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{
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strncpy(devfmt_str, dev->d_ifname, IFNAMSIZ);
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devfmt = devfmt_str;
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}
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#endif
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snprintf(dev->d_ifname, IFNAMSIZ, devfmt, devnum );
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/* Add the device to the list of known network devices */
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