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src/sys/net/if.h
purplerain 9e5eddc6af
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2023-05-16 22:16:59 +00:00

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/* $OpenBSD: if.h,v 1.213 2023/05/16 14:32:54 jan Exp $ */
/* $NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NET_IF_H_
#define _NET_IF_H_
#include <sys/cdefs.h>
/*
* Length of interface external name, including terminating '\0'.
* Note: this is the same size as a generic device's external name.
*/
#define IF_NAMESIZE 16
struct if_nameindex {
unsigned int if_index;
char *if_name;
};
#ifndef _KERNEL
__BEGIN_DECLS
unsigned int if_nametoindex(const char *);
char *if_indextoname(unsigned int, char *);
struct if_nameindex *if_nameindex(void);
void if_freenameindex(struct if_nameindex *);
__END_DECLS
#endif
#if __BSD_VISIBLE
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
/*
* Structure used to query names of interface cloners.
*/
struct if_clonereq {
int ifcr_total; /* total cloners (out) */
int ifcr_count; /* room for this many in user buffer */
char *ifcr_buffer; /* buffer for cloner names */
};
#define MCLPOOLS 8 /* number of cluster pools */
struct if_rxring {
int rxr_adjusted;
u_int rxr_alive;
u_int rxr_cwm;
u_int rxr_lwm;
u_int rxr_hwm;
};
struct if_rxring_info {
char ifr_name[16]; /* name of the ring */
u_int ifr_size; /* size of the packets on the ring */
struct if_rxring ifr_info;
};
/* Structure used in SIOCGIFRXR request. */
struct if_rxrinfo {
u_int ifri_total;
struct if_rxring_info *ifri_entries;
};
/*
* Structure defining statistics and other data kept regarding a network
* interface.
*/
struct if_data {
/* generic interface information */
u_char ifi_type; /* ethernet, tokenring, etc. */
u_char ifi_addrlen; /* media address length */
u_char ifi_hdrlen; /* media header length */
u_char ifi_link_state; /* current link state */
u_int32_t ifi_mtu; /* maximum transmission unit */
u_int32_t ifi_metric; /* routing metric (external only) */
u_int32_t ifi_rdomain; /* routing instance */
u_int64_t ifi_baudrate; /* linespeed */
/* volatile statistics */
u_int64_t ifi_ipackets; /* packets received on interface */
u_int64_t ifi_ierrors; /* input errors on interface */
u_int64_t ifi_opackets; /* packets sent on interface */
u_int64_t ifi_oerrors; /* output errors on interface */
u_int64_t ifi_collisions; /* collisions on csma interfaces */
u_int64_t ifi_ibytes; /* total number of octets received */
u_int64_t ifi_obytes; /* total number of octets sent */
u_int64_t ifi_imcasts; /* packets received via multicast */
u_int64_t ifi_omcasts; /* packets sent via multicast */
u_int64_t ifi_iqdrops; /* dropped on input, this interface */
u_int64_t ifi_oqdrops; /* dropped on output, this interface */
u_int64_t ifi_noproto; /* destined for unsupported protocol */
u_int32_t ifi_capabilities; /* interface capabilities */
struct timeval ifi_lastchange; /* last operational state change */
};
#define IFQ_NQUEUES 8
#define IFQ_MINPRIO 0
#define IFQ_MAXPRIO IFQ_NQUEUES - 1
#define IFQ_DEFPRIO 3
#define IFQ_PRIO2TOS(_p) ((_p) << 5)
#define IFQ_TOS2PRIO(_t) ((_t) >> 5)
/*
* Values for if_link_state.
*/
#define LINK_STATE_UNKNOWN 0 /* link unknown */
#define LINK_STATE_INVALID 1 /* link invalid */
#define LINK_STATE_DOWN 2 /* link is down */
#define LINK_STATE_KALIVE_DOWN 3 /* keepalive reports down */
#define LINK_STATE_UP 4 /* link is up */
#define LINK_STATE_HALF_DUPLEX 5 /* link is up and half duplex */
#define LINK_STATE_FULL_DUPLEX 6 /* link is up and full duplex */
#define LINK_STATE_IS_UP(_s) \
((_s) >= LINK_STATE_UP || (_s) == LINK_STATE_UNKNOWN)
/*
* Status bit descriptions for the various interface types.
*/
struct if_status_description {
u_char ifs_type;
u_char ifs_state;
const char *ifs_string;
};
#define LINK_STATE_DESC_MATCH(_ifs, _t, _s) \
(((_ifs)->ifs_type == (_t) || (_ifs)->ifs_type == 0) && \
(_ifs)->ifs_state == (_s))
#define LINK_STATE_DESCRIPTIONS { \
{ IFT_ETHER, LINK_STATE_DOWN, "no carrier" }, \
\
{ IFT_IEEE80211, LINK_STATE_DOWN, "no network" }, \
\
{ IFT_PPP, LINK_STATE_DOWN, "no carrier" }, \
\
{ IFT_CARP, LINK_STATE_DOWN, "backup" }, \
{ IFT_CARP, LINK_STATE_UP, "master" }, \
{ IFT_CARP, LINK_STATE_HALF_DUPLEX, "master" }, \
{ IFT_CARP, LINK_STATE_FULL_DUPLEX, "master" }, \
\
{ 0, LINK_STATE_UP, "active" }, \
{ 0, LINK_STATE_HALF_DUPLEX, "active" }, \
{ 0, LINK_STATE_FULL_DUPLEX, "active" }, \
\
{ 0, LINK_STATE_UNKNOWN, "unknown" }, \
{ 0, LINK_STATE_INVALID, "invalid" }, \
{ 0, LINK_STATE_DOWN, "down" }, \
{ 0, LINK_STATE_KALIVE_DOWN, "keepalive down" }, \
{ 0, 0, NULL } \
}
/* Traditional BSD name for length of interface external name. */
#define IFNAMSIZ IF_NAMESIZE
/*
* Length of interface description, including terminating '\0'.
*/
#define IFDESCRSIZE 64
/*
* Interface flags can be either owned by the stack or the driver. The
* symbols below document who is toggling which flag.
*
* I immutable after creation
* N written by the stack (upon user request)
* d written by the driver
* c for userland compatibility only
*/
#define IFF_UP 0x1 /* [N] interface is up */
#define IFF_BROADCAST 0x2 /* [I] broadcast address valid */
#define IFF_DEBUG 0x4 /* [N] turn on debugging */
#define IFF_LOOPBACK 0x8 /* [I] is a loopback net */
#define IFF_POINTOPOINT 0x10 /* [I] is point-to-point link */
#define IFF_STATICARP 0x20 /* [N] only static ARP */
#define IFF_RUNNING 0x40 /* [d] resources allocated */
#define IFF_NOARP 0x80 /* [N] no address resolution protocol */
#define IFF_PROMISC 0x100 /* [N] receive all packets */
#define IFF_ALLMULTI 0x200 /* [d] receive all multicast packets */
#define IFF_OACTIVE 0x400 /* [c] transmission in progress */
#define IFF_SIMPLEX 0x800 /* [I] can't hear own transmissions */
#define IFF_LINK0 0x1000 /* [N] per link layer defined bit */
#define IFF_LINK1 0x2000 /* [N] per link layer defined bit */
#define IFF_LINK2 0x4000 /* [N] per link layer defined bit */
#define IFF_MULTICAST 0x8000 /* [I] supports multicast */
/* flags set internally only: */
#define IFF_CANTCHANGE \
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
#define IFXF_MPSAFE 0x1 /* [I] if_start is mpsafe */
#define IFXF_CLONED 0x2 /* [I] pseudo interface */
#define IFXF_AUTOCONF6TEMP 0x4 /* [N] v6 temporary addrs enabled */
#define IFXF_MPLS 0x8 /* [N] supports MPLS */
#define IFXF_WOL 0x10 /* [N] wake on lan enabled */
#define IFXF_AUTOCONF6 0x20 /* [N] v6 autoconf enabled */
#define IFXF_INET6_NOSOII 0x40 /* [N] don't do RFC 7217 */
#define IFXF_AUTOCONF4 0x80 /* [N] v4 autoconf (aka dhcp) enabled */
#define IFXF_MONITOR 0x100 /* [N] only used for bpf */
#define IFXF_LRO 0x200 /* [N] TCP large recv offload */
#define IFXF_CANTCHANGE \
(IFXF_MPSAFE|IFXF_CLONED)
/*
* Some convenience macros used for setting ifi_baudrate.
*/
#define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */
#define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */
#define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */
/* Capabilities that interfaces can advertise. */
#define IFCAP_CSUM_IPv4 0x00000001 /* can do IPv4 header csum */
#define IFCAP_CSUM_TCPv4 0x00000002 /* can do IPv4/TCP csum */
#define IFCAP_CSUM_UDPv4 0x00000004 /* can do IPv4/UDP csum */
#define IFCAP_VLAN_MTU 0x00000010 /* VLAN-compatible MTU */
#define IFCAP_VLAN_HWTAGGING 0x00000020 /* hardware VLAN tag support */
#define IFCAP_CSUM_TCPv6 0x00000080 /* can do IPv6/TCP checksums */
#define IFCAP_CSUM_UDPv6 0x00000100 /* can do IPv6/UDP checksums */
#define IFCAP_TSOv4 0x00001000 /* IPv4/TCP segment offload */
#define IFCAP_TSOv6 0x00002000 /* IPv6/TCP segment offload */
#define IFCAP_LRO 0x00004000 /* TCP large recv offload */
#define IFCAP_WOL 0x00008000 /* can do wake on lan */
#define IFCAP_CSUM_MASK (IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | \
IFCAP_CSUM_UDPv4 | IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6)
/* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */
#define IFQCTL_LEN 1
#define IFQCTL_MAXLEN 2
#define IFQCTL_DROPS 3
#define IFQCTL_CONGESTION 4
#define IFQCTL_MAXID 5
/* sysctl for ifq (per-protocol packet input queue variant of ifqueue) */
#define CTL_IFQ_NAMES { \
{ 0, 0 }, \
{ "len", CTLTYPE_INT }, \
{ "maxlen", CTLTYPE_INT }, \
{ "drops", CTLTYPE_INT }, \
{ "congestion", CTLTYPE_INT }, \
}
/*
* Message format for use in obtaining information about interfaces
* from sysctl and the routing socket.
*/
struct if_msghdr {
u_short ifm_msglen; /* to skip over non-understood messages */
u_char ifm_version; /* future binary compatibility */
u_char ifm_type; /* message type */
u_short ifm_hdrlen; /* sizeof(if_msghdr) to skip over the header */
u_short ifm_index; /* index for associated ifp */
u_short ifm_tableid; /* routing table id */
u_char ifm_pad1;
u_char ifm_pad2;
int ifm_addrs; /* like rtm_addrs */
int ifm_flags; /* value of if_flags */
int ifm_xflags;
struct if_data ifm_data;/* statistics and other data about if */
};
/*
* Message format for use in obtaining information about interface addresses
* from sysctl and the routing socket.
*/
struct ifa_msghdr {
u_short ifam_msglen; /* to skip over non-understood messages */
u_char ifam_version; /* future binary compatibility */
u_char ifam_type; /* message type */
u_short ifam_hdrlen; /* sizeof(ifa_msghdr) to skip over the header */
u_short ifam_index; /* index for associated ifp */
u_short ifam_tableid; /* routing table id */
u_char ifam_pad1;
u_char ifam_pad2;
int ifam_addrs; /* like rtm_addrs */
int ifam_flags; /* value of ifa_flags */
int ifam_metric; /* value of ifa_metric */
};
/*
* Message format announcing the arrival or departure of a network interface.
*/
struct if_announcemsghdr {
u_short ifan_msglen; /* to skip over non-understood messages */
u_char ifan_version; /* future binary compatibility */
u_char ifan_type; /* message type */
u_short ifan_hdrlen; /* sizeof(if_announcemsghdr) to skip header */
u_short ifan_index; /* index for associated ifp */
u_short ifan_what; /* what type of announcement */
char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
};
#define IFAN_ARRIVAL 0 /* interface arrival */
#define IFAN_DEPARTURE 1 /* interface departure */
/* message format used to pass 80211 interface info */
struct if_ieee80211_data {
uint8_t ifie_channel; /* IEEE80211_CHAN_MAX == 255 */
uint8_t ifie_nwid_len;
uint32_t ifie_flags; /* ieee80211com.ic_flags */
uint32_t ifie_xflags; /* ieee80211com.ic xflags */
uint8_t ifie_nwid[32]; /* IEEE80211_NWID_LEN */
uint8_t ifie_addr[6]; /* IEEE80211_ADDR_LEN */
};
struct if_ieee80211_msghdr {
uint16_t ifim_msglen;
uint8_t ifim_version;
uint8_t ifim_type;
uint16_t ifim_hdrlen;
uint16_t ifim_index;
uint16_t ifim_tableid;
struct if_ieee80211_data ifim_ifie;
};
/* message format used to pass interface name to index mappings */
struct if_nameindex_msg {
unsigned int if_index;
char if_name[IFNAMSIZ];
};
/*
* interface groups
*/
#define IFG_ALL "all" /* group contains all interfaces */
#define IFG_EGRESS "egress" /* if(s) default route(s) point to */
struct ifg_req {
union {
char ifgrqu_group[IFNAMSIZ];
char ifgrqu_member[IFNAMSIZ];
} ifgrq_ifgrqu;
#define ifgrq_group ifgrq_ifgrqu.ifgrqu_group
#define ifgrq_member ifgrq_ifgrqu.ifgrqu_member
};
struct ifg_attrib {
int ifg_carp_demoted;
};
/*
* Used to lookup groups for an interface
*/
struct ifgroupreq {
char ifgr_name[IFNAMSIZ];
u_int ifgr_len;
union {
char ifgru_group[IFNAMSIZ];
struct ifg_req *ifgru_groups;
struct ifg_attrib ifgru_attrib;
} ifgr_ifgru;
#define ifgr_group ifgr_ifgru.ifgru_group
#define ifgr_groups ifgr_ifgru.ifgru_groups
#define ifgr_attrib ifgr_ifgru.ifgru_attrib
};
/*
* 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.
*/
struct ifreq {
char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
union {
struct sockaddr ifru_addr;
struct sockaddr ifru_dstaddr;
struct sockaddr ifru_broadaddr;
short ifru_flags;
int ifru_metric;
int64_t ifru_vnetid;
uint64_t ifru_media;
caddr_t ifru_data;
unsigned int ifru_index;
} ifr_ifru;
#define ifr_addr ifr_ifru.ifru_addr /* address */
#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
#define ifr_flags ifr_ifru.ifru_flags /* flags */
#define ifr_metric ifr_ifru.ifru_metric /* metric */
#define ifr_mtu ifr_ifru.ifru_metric /* mtu (overload) */
#define ifr_hardmtu ifr_ifru.ifru_metric /* hardmtu (overload) */
#define ifr_media ifr_ifru.ifru_media /* media options */
#define ifr_rdomainid ifr_ifru.ifru_metric /* VRF instance (overload) */
#define ifr_vnetid ifr_ifru.ifru_vnetid /* Virtual Net Id */
#define ifr_ttl ifr_ifru.ifru_metric /* tunnel TTL (overload) */
#define ifr_df ifr_ifru.ifru_metric /* tunnel DF (overload) */
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
#define ifr_index ifr_ifru.ifru_index /* interface index */
#define ifr_llprio ifr_ifru.ifru_metric /* link layer priority */
#define ifr_hdrprio ifr_ifru.ifru_metric /* header prio field config */
#define ifr_pwe3 ifr_ifru.ifru_metric /* PWE3 type */
};
#define IF_HDRPRIO_MIN IFQ_MINPRIO
#define IF_HDRPRIO_MAX IFQ_MAXPRIO
#define IF_HDRPRIO_PACKET -1 /* use mbuf prio */
#define IF_HDRPRIO_PAYLOAD -2 /* copy payload prio */
#define IF_HDRPRIO_OUTER -3 /* use outer prio */
#define IF_PWE3_ETHERNET 1 /* ethernet or ethernet tagged */
#define IF_PWE3_IP 2 /* IP layer 2 */
struct ifaliasreq {
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
union {
struct sockaddr ifrau_addr;
int ifrau_align;
} ifra_ifrau;
#ifndef ifra_addr
#define ifra_addr ifra_ifrau.ifrau_addr
#endif
struct sockaddr ifra_dstaddr;
#define ifra_broadaddr ifra_dstaddr
struct sockaddr ifra_mask;
};
struct ifmediareq {
char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
uint64_t ifm_current; /* get/set current media options */
uint64_t ifm_mask; /* don't care mask */
uint64_t ifm_status; /* media status */
uint64_t ifm_active; /* active options */
int ifm_count; /* # entries in ifm_ulist array */
uint64_t *ifm_ulist; /* media words */
};
struct ifkalivereq {
char ikar_name[IFNAMSIZ]; /* if name, e.g. "en0" */
int ikar_timeo;
int ikar_cnt;
};
/*
* Structure used in SIOCGIFCONF request.
* Used to retrieve interface configuration
* for machine (useful for programs which
* must know all networks accessible).
*/
struct ifconf {
int ifc_len; /* size of associated buffer */
union {
caddr_t ifcu_buf;
struct ifreq *ifcu_req;
} ifc_ifcu;
#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
};
/*
* Structure for SIOC[AGD]LIFADDR
*/
struct if_laddrreq {
char iflr_name[IFNAMSIZ];
unsigned int flags;
#define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
unsigned int prefixlen; /* in/out */
struct sockaddr_storage addr; /* in/out */
struct sockaddr_storage dstaddr; /* out */
};
/* SIOCIFAFDETACH */
struct if_afreq {
char ifar_name[IFNAMSIZ];
sa_family_t ifar_af;
};
/* SIOC[SG]IFPARENT */
struct if_parent {
char ifp_name[IFNAMSIZ];
char ifp_parent[IFNAMSIZ];
};
/* SIOCGIFSFFPAGE */
#define IFSFF_ADDR_EEPROM 0xa0
#define IFSFF_ADDR_DDM 0xa2
#define IFSFF_DATA_LEN 256
struct if_sffpage {
char sff_ifname[IFNAMSIZ]; /* u -> k */
uint8_t sff_addr; /* u -> k */
uint8_t sff_page; /* u -> k */
uint8_t sff_data[IFSFF_DATA_LEN]; /* k -> u */
};
#include <net/if_arp.h>
#ifdef _KERNEL
struct socket;
struct ifnet;
struct ifq_ops;
void if_alloc_sadl(struct ifnet *);
void if_free_sadl(struct ifnet *);
void if_attach(struct ifnet *);
void if_attach_queues(struct ifnet *, unsigned int);
void if_attach_iqueues(struct ifnet *, unsigned int);
void if_attach_ifq(struct ifnet *, const struct ifq_ops *, void *);
void if_attachhead(struct ifnet *);
void if_deactivate(struct ifnet *);
void if_detach(struct ifnet *);
void if_down(struct ifnet *);
void if_downall(void);
void if_link_state_change(struct ifnet *);
void if_up(struct ifnet *);
void if_getdata(struct ifnet *, struct if_data *);
void ifinit(void);
int ifioctl(struct socket *, u_long, caddr_t, struct proc *);
int ifpromisc(struct ifnet *, int);
int ifsetlro(struct ifnet *, int);
struct ifg_group *if_creategroup(const char *);
int if_addgroup(struct ifnet *, const char *);
int if_delgroup(struct ifnet *, const char *);
void if_group_routechange(struct sockaddr *, struct sockaddr *);
struct ifnet *if_unit(const char *);
struct ifnet *if_get(unsigned int);
void if_put(struct ifnet *);
void ifnewlladdr(struct ifnet *);
void if_congestion(void);
int if_congested(void);
__dead void unhandled_af(int);
int if_setlladdr(struct ifnet *, const uint8_t *);
struct taskq * net_tq(unsigned int);
#endif /* _KERNEL */
#endif /* __BSD_VISIBLE */
#endif /* _NET_IF_H_ */
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