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Diffstat (limited to 'include/linux/if.h')
| -rw-r--r-- | include/linux/if.h | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/include/linux/if.h b/include/linux/if.h new file mode 100644 index 0000000..b287b2a --- /dev/null +++ b/include/linux/if.h @@ -0,0 +1,296 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Global definitions for the INET interface module. + * + * Version: @(#)if.h 1.0.2 04/18/93 + * + * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988 + * Ross Biro + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * + * This program 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 of the License, or (at your option) any later version. + */ +#ifndef _LINUX_IF_H +#define _LINUX_IF_H + +#include <linux/libc-compat.h> /* for compatibility with glibc */ +#include <linux/types.h> /* for "__kernel_caddr_t" et al */ +#include <linux/socket.h> /* for "struct sockaddr" et al */ + /* for "__user" et al */ + +#include <sys/socket.h> /* for struct sockaddr. */ + +#if __UAPI_DEF_IF_IFNAMSIZ +#define IFNAMSIZ 16 +#endif /* __UAPI_DEF_IF_IFNAMSIZ */ +#define IFALIASZ 256 +#define ALTIFNAMSIZ 128 +#include <linux/hdlc/ioctl.h> + +/* For glibc compatibility. An empty enum does not compile. */ +#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || \ + __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 +/** + * enum net_device_flags - &struct net_device flags + * + * These are the &struct net_device flags, they can be set by drivers, the + * kernel and some can be triggered by userspace. Userspace can query and + * set these flags using userspace utilities but there is also a sysfs + * entry available for all dev flags which can be queried and set. These flags + * are shared for all types of net_devices. The sysfs entries are available + * via /sys/class/net/<dev>/flags. Flags which can be toggled through sysfs + * are annotated below, note that only a few flags can be toggled and some + * other flags are always preserved from the original net_device flags + * even if you try to set them via sysfs. Flags which are always preserved + * are kept under the flag grouping @IFF_VOLATILE. Flags which are __volatile__ + * are annotated below as such. + * + * You should have a pretty good reason to be extending these flags. + * + * @IFF_UP: interface is up. Can be toggled through sysfs. + * @IFF_BROADCAST: broadcast address valid. Volatile. + * @IFF_DEBUG: turn on debugging. Can be toggled through sysfs. + * @IFF_LOOPBACK: is a loopback net. Volatile. + * @IFF_POINTOPOINT: interface is has p-p link. Volatile. + * @IFF_NOTRAILERS: avoid use of trailers. Can be toggled through sysfs. + * Volatile. + * @IFF_RUNNING: interface RFC2863 OPER_UP. Volatile. + * @IFF_NOARP: no ARP protocol. Can be toggled through sysfs. Volatile. + * @IFF_PROMISC: receive all packets. Can be toggled through sysfs. + * @IFF_ALLMULTI: receive all multicast packets. Can be toggled through + * sysfs. + * @IFF_MASTER: master of a load balancer. Volatile. + * @IFF_SLAVE: slave of a load balancer. Volatile. + * @IFF_MULTICAST: Supports multicast. Can be toggled through sysfs. + * @IFF_PORTSEL: can set media type. Can be toggled through sysfs. + * @IFF_AUTOMEDIA: auto media select active. Can be toggled through sysfs. + * @IFF_DYNAMIC: dialup device with changing addresses. Can be toggled + * through sysfs. + * @IFF_LOWER_UP: driver signals L1 up. Volatile. + * @IFF_DORMANT: driver signals dormant. Volatile. + * @IFF_ECHO: echo sent packets. Volatile. + */ +enum net_device_flags { +/* for compatibility with glibc net/if.h */ +#if __UAPI_DEF_IF_NET_DEVICE_FLAGS + IFF_UP = 1<<0, /* sysfs */ + IFF_BROADCAST = 1<<1, /* __volatile__ */ + IFF_DEBUG = 1<<2, /* sysfs */ + IFF_LOOPBACK = 1<<3, /* __volatile__ */ + IFF_POINTOPOINT = 1<<4, /* __volatile__ */ + IFF_NOTRAILERS = 1<<5, /* sysfs */ + IFF_RUNNING = 1<<6, /* __volatile__ */ + IFF_NOARP = 1<<7, /* sysfs */ + IFF_PROMISC = 1<<8, /* sysfs */ + IFF_ALLMULTI = 1<<9, /* sysfs */ + IFF_MASTER = 1<<10, /* __volatile__ */ + IFF_SLAVE = 1<<11, /* __volatile__ */ + IFF_MULTICAST = 1<<12, /* sysfs */ + IFF_PORTSEL = 1<<13, /* sysfs */ + IFF_AUTOMEDIA = 1<<14, /* sysfs */ + IFF_DYNAMIC = 1<<15, /* sysfs */ +#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */ +#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO + IFF_LOWER_UP = 1<<16, /* __volatile__ */ + IFF_DORMANT = 1<<17, /* __volatile__ */ + IFF_ECHO = 1<<18, /* __volatile__ */ +#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */ +}; +#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 */ + +/* for compatibility with glibc net/if.h */ +#if __UAPI_DEF_IF_NET_DEVICE_FLAGS +#define IFF_UP IFF_UP +#define IFF_BROADCAST IFF_BROADCAST +#define IFF_DEBUG IFF_DEBUG +#define IFF_LOOPBACK IFF_LOOPBACK +#define IFF_POINTOPOINT IFF_POINTOPOINT +#define IFF_NOTRAILERS IFF_NOTRAILERS +#define IFF_RUNNING IFF_RUNNING +#define IFF_NOARP IFF_NOARP +#define IFF_PROMISC IFF_PROMISC +#define IFF_ALLMULTI IFF_ALLMULTI +#define IFF_MASTER IFF_MASTER +#define IFF_SLAVE IFF_SLAVE +#define IFF_MULTICAST IFF_MULTICAST +#define IFF_PORTSEL IFF_PORTSEL +#define IFF_AUTOMEDIA IFF_AUTOMEDIA +#define IFF_DYNAMIC IFF_DYNAMIC +#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */ + +#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO +#define IFF_LOWER_UP IFF_LOWER_UP +#define IFF_DORMANT IFF_DORMANT +#define IFF_ECHO IFF_ECHO +#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */ + +#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\ + IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT) + +#define IF_GET_IFACE 0x0001 /* for querying only */ +#define IF_GET_PROTO 0x0002 + +/* For definitions see hdlc.h */ +#define IF_IFACE_V35 0x1000 /* V.35 serial interface */ +#define IF_IFACE_V24 0x1001 /* V.24 serial interface */ +#define IF_IFACE_X21 0x1002 /* X.21 serial interface */ +#define IF_IFACE_T1 0x1003 /* T1 telco serial interface */ +#define IF_IFACE_E1 0x1004 /* E1 telco serial interface */ +#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */ +#define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */ + +/* For definitions see hdlc.h */ +#define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */ +#define IF_PROTO_PPP 0x2001 /* PPP protocol */ +#define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */ +#define IF_PROTO_FR 0x2003 /* Frame Relay protocol */ +#define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */ +#define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */ +#define IF_PROTO_X25 0x2006 /* X.25 */ +#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */ +#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */ +#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */ +#define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */ +#define IF_PROTO_FR_ETH_PVC 0x200B +#define IF_PROTO_RAW 0x200C /* RAW Socket */ + +/* RFC 2863 operational status */ +enum { + IF_OPER_UNKNOWN, + IF_OPER_NOTPRESENT, + IF_OPER_DOWN, + IF_OPER_LOWERLAYERDOWN, + IF_OPER_TESTING, + IF_OPER_DORMANT, + IF_OPER_UP, +}; + +/* link modes */ +enum { + IF_LINK_MODE_DEFAULT, + IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */ + IF_LINK_MODE_TESTING, /* limit upward transition to testing */ +}; + +/* + * Device mapping structure. I'd just gone off and designed a + * beautiful scheme using only loadable modules with arguments + * for driver options and along come the PCMCIA people 8) + * + * Ah well. The get() side of this is good for WDSETUP, and it'll + * be handy for debugging things. The set side is fine for now and + * being very small might be worth keeping for clean configuration. + */ + +/* for compatibility with glibc net/if.h */ +#if __UAPI_DEF_IF_IFMAP +struct ifmap { + unsigned long mem_start; + unsigned long mem_end; + unsigned short base_addr; + unsigned char irq; + unsigned char dma; + unsigned char port; + /* 3 bytes spare */ +}; +#endif /* __UAPI_DEF_IF_IFMAP */ + +struct if_settings { + unsigned int type; /* Type of physical device or protocol */ + unsigned int size; /* Size of the data allocated by the caller */ + union { + /* {atm/eth/dsl}_settings anyone ? */ + raw_hdlc_proto *raw_hdlc; + cisco_proto *cisco; + fr_proto *fr; + fr_proto_pvc *fr_pvc; + fr_proto_pvc_info *fr_pvc_info; + x25_hdlc_proto *x25; + + /* interface settings */ + sync_serial_settings *sync; + te1_settings *te1; + } ifs_ifsu; +}; + +/* + * Interface request structure used for socket + * ioctl's. All interface ioctl's must have parameter + * definitions which begin with ifr_name. The + * remainder may be interface specific. + */ + +/* for compatibility with glibc net/if.h */ +#if __UAPI_DEF_IF_IFREQ +struct ifreq { +#define IFHWADDRLEN 6 + union + { + char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + } ifr_ifrn; + + union { + struct sockaddr ifru_addr; + struct sockaddr ifru_dstaddr; + struct sockaddr ifru_broadaddr; + struct sockaddr ifru_netmask; + struct sockaddr ifru_hwaddr; + short ifru_flags; + int ifru_ivalue; + int ifru_mtu; + struct ifmap ifru_map; + char ifru_slave[IFNAMSIZ]; /* Just fits the size */ + char ifru_newname[IFNAMSIZ]; + void * ifru_data; + struct if_settings ifru_settings; + } ifr_ifru; +}; +#endif /* __UAPI_DEF_IF_IFREQ */ + +#define ifr_name ifr_ifrn.ifrn_name /* interface name */ +#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ +#define ifr_addr ifr_ifru.ifru_addr /* address */ +#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */ +#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ +#define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */ +#define ifr_flags ifr_ifru.ifru_flags /* flags */ +#define ifr_metric ifr_ifru.ifru_ivalue /* metric */ +#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ +#define ifr_map ifr_ifru.ifru_map /* device map */ +#define ifr_slave ifr_ifru.ifru_slave /* slave device */ +#define ifr_data ifr_ifru.ifru_data /* for use by interface */ +#define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */ +#define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */ +#define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */ +#define ifr_newname ifr_ifru.ifru_newname /* New name */ +#define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/ + +/* + * Structure used in SIOCGIFCONF request. + * Used to retrieve interface configuration + * for machine (useful for programs which + * must know all networks accessible). + */ + +/* for compatibility with glibc net/if.h */ +#if __UAPI_DEF_IF_IFCONF +struct ifconf { + int ifc_len; /* size of buffer */ + union { + char *ifcu_buf; + struct ifreq *ifcu_req; + } ifc_ifcu; +}; +#endif /* __UAPI_DEF_IF_IFCONF */ + +#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ +#define ifc_req ifc_ifcu.ifcu_req /* array of structures */ + +#endif /* _LINUX_IF_H */ |