memcg: fix GPF when cgroup removal races with last exit
[linux-2.6-block.git] / include / linux / if.h
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1da177e4
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1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Global definitions for the INET interface module.
7 *
8 * Version: @(#)if.h 1.0.2 04/18/93
9 *
10 * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
02c30a84 11 * Ross Biro
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12 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 */
19#ifndef _LINUX_IF_H
20#define _LINUX_IF_H
21
22#include <linux/types.h> /* for "__kernel_caddr_t" et al */
23#include <linux/socket.h> /* for "struct sockaddr" et al */
24#include <linux/compiler.h> /* for "__user" et al */
25
26#define IFNAMSIZ 16
0b815a1a 27#define IFALIASZ 256
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28#include <linux/hdlc/ioctl.h>
29
30/* Standard interface flags (netdevice->flags). */
31#define IFF_UP 0x1 /* interface is up */
32#define IFF_BROADCAST 0x2 /* broadcast address valid */
33#define IFF_DEBUG 0x4 /* turn on debugging */
34#define IFF_LOOPBACK 0x8 /* is a loopback net */
35#define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
36#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
b00055aa 37#define IFF_RUNNING 0x40 /* interface RFC2863 OPER_UP */
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38#define IFF_NOARP 0x80 /* no ARP protocol */
39#define IFF_PROMISC 0x100 /* receive all packets */
40#define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
41
42#define IFF_MASTER 0x400 /* master of a load balancer */
43#define IFF_SLAVE 0x800 /* slave of a load balancer */
44
45#define IFF_MULTICAST 0x1000 /* Supports multicast */
46
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47#define IFF_PORTSEL 0x2000 /* can set media type */
48#define IFF_AUTOMEDIA 0x4000 /* auto media select active */
49#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
50
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51#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
52#define IFF_DORMANT 0x20000 /* driver signals dormant */
53
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54#define IFF_ECHO 0x40000 /* echo sent packets */
55
56#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
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57 IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
58
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59/* Private (from user) interface flags (netdevice->priv_flags). */
60#define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */
61#define IFF_EBRIDGE 0x2 /* Ethernet bridging device. */
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62#define IFF_SLAVE_INACTIVE 0x4 /* bonding slave not the curr. active */
63#define IFF_MASTER_8023AD 0x8 /* bonding master, 802.3ad. */
64#define IFF_MASTER_ALB 0x10 /* bonding master, balance-alb. */
0b680e75 65#define IFF_BONDING 0x20 /* bonding master or slave */
f5b2b966 66#define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
c7dc89c0 67#define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
6cf3f41e 68#define IFF_MASTER_ARPMON 0x100 /* bonding master, ARP mon in use */
7cdc15f5 69#define IFF_WAN_HDLC 0x200 /* WAN HDLC device */
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70#define IFF_XMIT_DST_RELEASE 0x400 /* dev_hard_start_xmit() is allowed to
71 * release skb->dst
72 */
ad4bb6f8 73#define IFF_DONT_BRIDGE 0x800 /* disallow bridging this ether dev */
080e4130
AW
74#define IFF_DISABLE_NETPOLL 0x1000 /* disable netpoll at run-time */
75#define IFF_MACVLAN_PORT 0x2000 /* device used as macvlan port */
76#define IFF_BRIDGE_PORT 0x4000 /* device used as bridge port */
77#define IFF_OVS_DATAPATH 0x8000 /* device used as Open vSwitch
409456b1 78 * datapath port */
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79#define IFF_TX_SKB_SHARING 0x10000 /* The interface supports sharing
80 * skbs on transmit */
01789349 81#define IFF_UNICAST_FLT 0x20000 /* Supports unicast filtering */
3d249d4c 82#define IFF_TEAM_PORT 0x40000 /* device used as team port */
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83
84#define IF_GET_IFACE 0x0001 /* for querying only */
85#define IF_GET_PROTO 0x0002
86
87/* For definitions see hdlc.h */
88#define IF_IFACE_V35 0x1000 /* V.35 serial interface */
89#define IF_IFACE_V24 0x1001 /* V.24 serial interface */
90#define IF_IFACE_X21 0x1002 /* X.21 serial interface */
91#define IF_IFACE_T1 0x1003 /* T1 telco serial interface */
92#define IF_IFACE_E1 0x1004 /* E1 telco serial interface */
93#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
94#define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */
95
96/* For definitions see hdlc.h */
97#define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */
98#define IF_PROTO_PPP 0x2001 /* PPP protocol */
99#define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */
100#define IF_PROTO_FR 0x2003 /* Frame Relay protocol */
101#define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */
102#define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */
103#define IF_PROTO_X25 0x2006 /* X.25 */
104#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
105#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */
106#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */
107#define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */
108#define IF_PROTO_FR_ETH_PVC 0x200B
109#define IF_PROTO_RAW 0x200C /* RAW Socket */
110
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111/* RFC 2863 operational status */
112enum {
113 IF_OPER_UNKNOWN,
114 IF_OPER_NOTPRESENT,
115 IF_OPER_DOWN,
116 IF_OPER_LOWERLAYERDOWN,
117 IF_OPER_TESTING,
118 IF_OPER_DORMANT,
119 IF_OPER_UP,
120};
121
122/* link modes */
123enum {
124 IF_LINK_MODE_DEFAULT,
125 IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
126};
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127
128/*
129 * Device mapping structure. I'd just gone off and designed a
130 * beautiful scheme using only loadable modules with arguments
131 * for driver options and along come the PCMCIA people 8)
132 *
133 * Ah well. The get() side of this is good for WDSETUP, and it'll
134 * be handy for debugging things. The set side is fine for now and
135 * being very small might be worth keeping for clean configuration.
136 */
137
d94d9fee 138struct ifmap {
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139 unsigned long mem_start;
140 unsigned long mem_end;
141 unsigned short base_addr;
142 unsigned char irq;
143 unsigned char dma;
144 unsigned char port;
145 /* 3 bytes spare */
146};
147
d94d9fee 148struct if_settings {
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149 unsigned int type; /* Type of physical device or protocol */
150 unsigned int size; /* Size of the data allocated by the caller */
151 union {
152 /* {atm/eth/dsl}_settings anyone ? */
153 raw_hdlc_proto __user *raw_hdlc;
154 cisco_proto __user *cisco;
155 fr_proto __user *fr;
156 fr_proto_pvc __user *fr_pvc;
157 fr_proto_pvc_info __user *fr_pvc_info;
158
159 /* interface settings */
160 sync_serial_settings __user *sync;
161 te1_settings __user *te1;
162 } ifs_ifsu;
163};
164
165/*
166 * Interface request structure used for socket
167 * ioctl's. All interface ioctl's must have parameter
168 * definitions which begin with ifr_name. The
169 * remainder may be interface specific.
170 */
171
d94d9fee 172struct ifreq {
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173#define IFHWADDRLEN 6
174 union
175 {
176 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
177 } ifr_ifrn;
178
179 union {
180 struct sockaddr ifru_addr;
181 struct sockaddr ifru_dstaddr;
182 struct sockaddr ifru_broadaddr;
183 struct sockaddr ifru_netmask;
184 struct sockaddr ifru_hwaddr;
185 short ifru_flags;
186 int ifru_ivalue;
187 int ifru_mtu;
188 struct ifmap ifru_map;
189 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
190 char ifru_newname[IFNAMSIZ];
191 void __user * ifru_data;
192 struct if_settings ifru_settings;
193 } ifr_ifru;
194};
195
196#define ifr_name ifr_ifrn.ifrn_name /* interface name */
197#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
198#define ifr_addr ifr_ifru.ifru_addr /* address */
199#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
200#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
201#define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
202#define ifr_flags ifr_ifru.ifru_flags /* flags */
203#define ifr_metric ifr_ifru.ifru_ivalue /* metric */
204#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
205#define ifr_map ifr_ifru.ifru_map /* device map */
206#define ifr_slave ifr_ifru.ifru_slave /* slave device */
207#define ifr_data ifr_ifru.ifru_data /* for use by interface */
208#define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
209#define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
210#define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
211#define ifr_newname ifr_ifru.ifru_newname /* New name */
212#define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/
213
214/*
215 * Structure used in SIOCGIFCONF request.
216 * Used to retrieve interface configuration
217 * for machine (useful for programs which
218 * must know all networks accessible).
219 */
220
d94d9fee 221struct ifconf {
1da177e4 222 int ifc_len; /* size of buffer */
d94d9fee 223 union {
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224 char __user *ifcu_buf;
225 struct ifreq __user *ifcu_req;
226 } ifc_ifcu;
227};
228#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
229#define ifc_req ifc_ifcu.ifcu_req /* array of structures */
230
1da177e4 231#endif /* _LINUX_IF_H */