+/* 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
#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
#include <linux/hdlc/ioctl.h>
-/* Standard interface flags (netdevice->flags). */
-#define IFF_UP 0x1 /* interface is up */
-#define IFF_BROADCAST 0x2 /* broadcast address valid */
-#define IFF_DEBUG 0x4 /* turn on debugging */
-#define IFF_LOOPBACK 0x8 /* is a loopback net */
-#define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
-#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
-#define IFF_RUNNING 0x40 /* interface RFC2863 OPER_UP */
-#define IFF_NOARP 0x80 /* no ARP protocol */
-#define IFF_PROMISC 0x100 /* receive all packets */
-#define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
-
-#define IFF_MASTER 0x400 /* master of a load balancer */
-#define IFF_SLAVE 0x800 /* slave of a load balancer */
-
-#define IFF_MULTICAST 0x1000 /* Supports multicast */
-
-#define IFF_PORTSEL 0x2000 /* can set media type */
-#define IFF_AUTOMEDIA 0x4000 /* auto media select active */
-#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
+/* 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 */
-#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
-#define IFF_DORMANT 0x20000 /* driver signals dormant */
+/* 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 */
-#define IFF_ECHO 0x40000 /* echo sent packets */
+#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)
-/* Private (from user) interface flags (netdevice->priv_flags). */
-#define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */
-#define IFF_EBRIDGE 0x2 /* Ethernet bridging device. */
-#define IFF_SLAVE_INACTIVE 0x4 /* bonding slave not the curr. active */
-#define IFF_MASTER_8023AD 0x8 /* bonding master, 802.3ad. */
-#define IFF_MASTER_ALB 0x10 /* bonding master, balance-alb. */
-#define IFF_BONDING 0x20 /* bonding master or slave */
-#define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
-#define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
-#define IFF_MASTER_ARPMON 0x100 /* bonding master, ARP mon in use */
-#define IFF_WAN_HDLC 0x200 /* WAN HDLC device */
-#define IFF_XMIT_DST_RELEASE 0x400 /* dev_hard_start_xmit() is allowed to
- * release skb->dst
- */
-#define IFF_DONT_BRIDGE 0x800 /* disallow bridging this ether dev */
-#define IFF_DISABLE_NETPOLL 0x1000 /* disable netpoll at run-time */
-#define IFF_MACVLAN_PORT 0x2000 /* device used as macvlan port */
-#define IFF_BRIDGE_PORT 0x4000 /* device used as bridge port */
-#define IFF_OVS_DATAPATH 0x8000 /* device used as Open vSwitch
- * datapath port */
-#define IFF_TX_SKB_SHARING 0x10000 /* The interface supports sharing
- * skbs on transmit */
-#define IFF_UNICAST_FLT 0x20000 /* Supports unicast filtering */
-#define IFF_TEAM_PORT 0x40000 /* device used as team port */
-#define IFF_SUPP_NOFCS 0x80000 /* device supports sending custom FCS */
-#define IFF_LIVE_ADDR_CHANGE 0x100000 /* device supports hardware address
- * change when it's running */
-
-
#define IF_GET_IFACE 0x0001 /* for querying only */
#define IF_GET_PROTO 0x0002
* 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 char port;
/* 3 bytes spare */
};
+#endif /* __UAPI_DEF_IF_IFMAP */
struct if_settings {
unsigned int type; /* Type of physical device or protocol */
* remainder may be interface specific.
*/
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_IFREQ
struct ifreq {
#define IFHWADDRLEN 6
union
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 */
* 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 {
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 */
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