f137973487
According to 802.1Q-2014, VLAN tagged packets with VLAN id 0 should be considered as untagged, and only PCP and DEI values from the VLAN tag are meaningful. See for instance https://www.cisco.com/c/en/us/td/docs/switches/connectedgrid/cg-switch-sw-master/software/configuration/guide/vlan0/b_vlan_0.html. Make it possible to specify PCP value for outgoing packets on an ethernet interface. When PCP is supplied, the tag is appended, VLAN id set to 0, and PCP is filled by the supplied value. The code to do VLAN tag encapsulation is refactored from the if_vlan.c and moved into if_ethersubr.c. Drivers might have issues with filtering VID 0 packets on receive. This bug should be fixed for each driver. Reviewed by: ae (previous version), hselasky, melifaro Sponsored by: Mellanox Technologies MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D14702
452 lines
21 KiB
C
452 lines
21 KiB
C
/*
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* Fundamental constants relating to ethernet.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _NET_ETHERNET_H_
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#define _NET_ETHERNET_H_
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/*
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* Some basic Ethernet constants.
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*/
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#define ETHER_ADDR_LEN 6 /* length of an Ethernet address */
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#define ETHER_TYPE_LEN 2 /* length of the Ethernet type field */
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#define ETHER_CRC_LEN 4 /* length of the Ethernet CRC */
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#define ETHER_HDR_LEN (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN)
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#define ETHER_MIN_LEN 64 /* minimum frame len, including CRC */
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#define ETHER_MAX_LEN 1518 /* maximum frame len, including CRC */
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#define ETHER_MAX_LEN_JUMBO 9018 /* max jumbo frame len, including CRC */
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#define ETHER_VLAN_ENCAP_LEN 4 /* len of 802.1Q VLAN encapsulation */
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/*
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* Mbuf adjust factor to force 32-bit alignment of IP header.
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* Drivers should do m_adj(m, ETHER_ALIGN) when setting up a
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* receive so the upper layers get the IP header properly aligned
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* past the 14-byte Ethernet header.
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*/
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#define ETHER_ALIGN 2 /* driver adjust for IP hdr alignment */
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/*
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* Compute the maximum frame size based on ethertype (i.e. possible
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* encapsulation) and whether or not an FCS is present.
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*/
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#define ETHER_MAX_FRAME(ifp, etype, hasfcs) \
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((ifp)->if_mtu + ETHER_HDR_LEN + \
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((hasfcs) ? ETHER_CRC_LEN : 0) + \
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(((etype) == ETHERTYPE_VLAN) ? ETHER_VLAN_ENCAP_LEN : 0))
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/*
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* Ethernet-specific mbuf flags.
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*/
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#define M_HASFCS M_PROTO5 /* FCS included at end of frame */
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/*
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* Ethernet CRC32 polynomials (big- and little-endian verions).
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*/
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#define ETHER_CRC_POLY_LE 0xedb88320
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#define ETHER_CRC_POLY_BE 0x04c11db6
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/*
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* A macro to validate a length with
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*/
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#define ETHER_IS_VALID_LEN(foo) \
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((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
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/*
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* Structure of a 10Mb/s Ethernet header.
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*/
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struct ether_header {
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u_char ether_dhost[ETHER_ADDR_LEN];
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u_char ether_shost[ETHER_ADDR_LEN];
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u_short ether_type;
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} __packed;
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/*
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* Structure of a 48-bit Ethernet address.
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*/
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struct ether_addr {
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u_char octet[ETHER_ADDR_LEN];
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} __packed;
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#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
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#define ETHER_IS_BROADCAST(addr) \
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(((addr)[0] & (addr)[1] & (addr)[2] & \
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(addr)[3] & (addr)[4] & (addr)[5]) == 0xff)
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/*
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* 802.1q Virtual LAN header.
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*/
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struct ether_vlan_header {
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uint8_t evl_dhost[ETHER_ADDR_LEN];
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uint8_t evl_shost[ETHER_ADDR_LEN];
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uint16_t evl_encap_proto;
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uint16_t evl_tag;
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uint16_t evl_proto;
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} __packed;
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#define EVL_VLID_MASK 0x0FFF
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#define EVL_PRI_MASK 0xE000
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#define EVL_VLANOFTAG(tag) ((tag) & EVL_VLID_MASK)
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#define EVL_PRIOFTAG(tag) (((tag) >> 13) & 7)
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#define EVL_CFIOFTAG(tag) (((tag) >> 12) & 1)
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#define EVL_MAKETAG(vlid, pri, cfi) \
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((((((pri) & 7) << 1) | ((cfi) & 1)) << 12) | ((vlid) & EVL_VLID_MASK))
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/*
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* NOTE: 0x0000-0x05DC (0..1500) are generally IEEE 802.3 length fields.
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* However, there are some conflicts.
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*/
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#define ETHERTYPE_8023 0x0004 /* IEEE 802.3 packet */
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/* 0x0101 .. 0x1FF Experimental */
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#define ETHERTYPE_PUP 0x0200 /* Xerox PUP protocol - see 0A00 */
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#define ETHERTYPE_PUPAT 0x0200 /* PUP Address Translation - see 0A01 */
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#define ETHERTYPE_SPRITE 0x0500 /* ??? */
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/* 0x0400 Nixdorf */
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#define ETHERTYPE_NS 0x0600 /* XNS */
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#define ETHERTYPE_NSAT 0x0601 /* XNS Address Translation (3Mb only) */
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#define ETHERTYPE_DLOG1 0x0660 /* DLOG (?) */
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#define ETHERTYPE_DLOG2 0x0661 /* DLOG (?) */
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#define ETHERTYPE_IP 0x0800 /* IP protocol */
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#define ETHERTYPE_X75 0x0801 /* X.75 Internet */
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#define ETHERTYPE_NBS 0x0802 /* NBS Internet */
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#define ETHERTYPE_ECMA 0x0803 /* ECMA Internet */
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#define ETHERTYPE_CHAOS 0x0804 /* CHAOSnet */
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#define ETHERTYPE_X25 0x0805 /* X.25 Level 3 */
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#define ETHERTYPE_ARP 0x0806 /* Address resolution protocol */
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#define ETHERTYPE_NSCOMPAT 0x0807 /* XNS Compatibility */
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#define ETHERTYPE_FRARP 0x0808 /* Frame Relay ARP (RFC1701) */
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/* 0x081C Symbolics Private */
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/* 0x0888 - 0x088A Xyplex */
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#define ETHERTYPE_UBDEBUG 0x0900 /* Ungermann-Bass network debugger */
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#define ETHERTYPE_IEEEPUP 0x0A00 /* Xerox IEEE802.3 PUP */
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#define ETHERTYPE_IEEEPUPAT 0x0A01 /* Xerox IEEE802.3 PUP Address Translation */
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#define ETHERTYPE_VINES 0x0BAD /* Banyan VINES */
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#define ETHERTYPE_VINESLOOP 0x0BAE /* Banyan VINES Loopback */
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#define ETHERTYPE_VINESECHO 0x0BAF /* Banyan VINES Echo */
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/* 0x1000 - 0x100F Berkeley Trailer */
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/*
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* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
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* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
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* by an ETHER type (as given above) and then the (variable-length) header.
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*/
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#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
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#define ETHERTYPE_NTRAILER 16
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#define ETHERTYPE_DCA 0x1234 /* DCA - Multicast */
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#define ETHERTYPE_VALID 0x1600 /* VALID system protocol */
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#define ETHERTYPE_DOGFIGHT 0x1989 /* Artificial Horizons ("Aviator" dogfight simulator [on Sun]) */
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#define ETHERTYPE_RCL 0x1995 /* Datapoint Corporation (RCL lan protocol) */
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/* The following 3C0x types
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are unregistered: */
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#define ETHERTYPE_NBPVCD 0x3C00 /* 3Com NBP virtual circuit datagram (like XNS SPP) not registered */
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#define ETHERTYPE_NBPSCD 0x3C01 /* 3Com NBP System control datagram not registered */
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#define ETHERTYPE_NBPCREQ 0x3C02 /* 3Com NBP Connect request (virtual cct) not registered */
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#define ETHERTYPE_NBPCRSP 0x3C03 /* 3Com NBP Connect response not registered */
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#define ETHERTYPE_NBPCC 0x3C04 /* 3Com NBP Connect complete not registered */
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#define ETHERTYPE_NBPCLREQ 0x3C05 /* 3Com NBP Close request (virtual cct) not registered */
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#define ETHERTYPE_NBPCLRSP 0x3C06 /* 3Com NBP Close response not registered */
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#define ETHERTYPE_NBPDG 0x3C07 /* 3Com NBP Datagram (like XNS IDP) not registered */
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#define ETHERTYPE_NBPDGB 0x3C08 /* 3Com NBP Datagram broadcast not registered */
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#define ETHERTYPE_NBPCLAIM 0x3C09 /* 3Com NBP Claim NetBIOS name not registered */
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#define ETHERTYPE_NBPDLTE 0x3C0A /* 3Com NBP Delete NetBIOS name not registered */
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#define ETHERTYPE_NBPRAS 0x3C0B /* 3Com NBP Remote adaptor status request not registered */
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#define ETHERTYPE_NBPRAR 0x3C0C /* 3Com NBP Remote adaptor response not registered */
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#define ETHERTYPE_NBPRST 0x3C0D /* 3Com NBP Reset not registered */
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#define ETHERTYPE_PCS 0x4242 /* PCS Basic Block Protocol */
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#define ETHERTYPE_IMLBLDIAG 0x424C /* Information Modes Little Big LAN diagnostic */
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#define ETHERTYPE_DIDDLE 0x4321 /* THD - Diddle */
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#define ETHERTYPE_IMLBL 0x4C42 /* Information Modes Little Big LAN */
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#define ETHERTYPE_SIMNET 0x5208 /* BBN Simnet Private */
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#define ETHERTYPE_DECEXPER 0x6000 /* DEC Unassigned, experimental */
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#define ETHERTYPE_MOPDL 0x6001 /* DEC MOP dump/load */
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#define ETHERTYPE_MOPRC 0x6002 /* DEC MOP remote console */
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#define ETHERTYPE_DECnet 0x6003 /* DEC DECNET Phase IV route */
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#define ETHERTYPE_DN ETHERTYPE_DECnet /* libpcap, tcpdump */
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#define ETHERTYPE_LAT 0x6004 /* DEC LAT */
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#define ETHERTYPE_DECDIAG 0x6005 /* DEC diagnostic protocol (at interface initialization?) */
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#define ETHERTYPE_DECCUST 0x6006 /* DEC customer protocol */
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#define ETHERTYPE_SCA 0x6007 /* DEC LAVC, SCA */
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#define ETHERTYPE_AMBER 0x6008 /* DEC AMBER */
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#define ETHERTYPE_DECMUMPS 0x6009 /* DEC MUMPS */
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/* 0x6010 - 0x6014 3Com Corporation */
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#define ETHERTYPE_TRANSETHER 0x6558 /* Trans Ether Bridging (RFC1701)*/
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#define ETHERTYPE_RAWFR 0x6559 /* Raw Frame Relay (RFC1701) */
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#define ETHERTYPE_UBDL 0x7000 /* Ungermann-Bass download */
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#define ETHERTYPE_UBNIU 0x7001 /* Ungermann-Bass NIUs */
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#define ETHERTYPE_UBDIAGLOOP 0x7002 /* Ungermann-Bass diagnostic/loopback */
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#define ETHERTYPE_UBNMC 0x7003 /* Ungermann-Bass ??? (NMC to/from UB Bridge) */
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#define ETHERTYPE_UBBST 0x7005 /* Ungermann-Bass Bridge Spanning Tree */
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#define ETHERTYPE_OS9 0x7007 /* OS/9 Microware */
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#define ETHERTYPE_OS9NET 0x7009 /* OS/9 Net? */
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/* 0x7020 - 0x7029 LRT (England) (now Sintrom) */
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#define ETHERTYPE_RACAL 0x7030 /* Racal-Interlan */
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#define ETHERTYPE_PRIMENTS 0x7031 /* Prime NTS (Network Terminal Service) */
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#define ETHERTYPE_CABLETRON 0x7034 /* Cabletron */
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#define ETHERTYPE_CRONUSVLN 0x8003 /* Cronus VLN */
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#define ETHERTYPE_CRONUS 0x8004 /* Cronus Direct */
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#define ETHERTYPE_HP 0x8005 /* HP Probe */
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#define ETHERTYPE_NESTAR 0x8006 /* Nestar */
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#define ETHERTYPE_ATTSTANFORD 0x8008 /* AT&T/Stanford (local use) */
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#define ETHERTYPE_EXCELAN 0x8010 /* Excelan */
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#define ETHERTYPE_SG_DIAG 0x8013 /* SGI diagnostic type */
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#define ETHERTYPE_SG_NETGAMES 0x8014 /* SGI network games */
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#define ETHERTYPE_SG_RESV 0x8015 /* SGI reserved type */
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#define ETHERTYPE_SG_BOUNCE 0x8016 /* SGI bounce server */
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#define ETHERTYPE_APOLLODOMAIN 0x8019 /* Apollo DOMAIN */
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#define ETHERTYPE_TYMSHARE 0x802E /* Tymeshare */
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#define ETHERTYPE_TIGAN 0x802F /* Tigan, Inc. */
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#define ETHERTYPE_REVARP 0x8035 /* Reverse addr resolution protocol */
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#define ETHERTYPE_AEONIC 0x8036 /* Aeonic Systems */
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#define ETHERTYPE_IPXNEW 0x8037 /* IPX (Novell Netware?) */
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#define ETHERTYPE_LANBRIDGE 0x8038 /* DEC LANBridge */
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#define ETHERTYPE_DSMD 0x8039 /* DEC DSM/DDP */
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#define ETHERTYPE_ARGONAUT 0x803A /* DEC Argonaut Console */
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#define ETHERTYPE_VAXELN 0x803B /* DEC VAXELN */
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#define ETHERTYPE_DECDNS 0x803C /* DEC DNS Naming Service */
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#define ETHERTYPE_ENCRYPT 0x803D /* DEC Ethernet Encryption */
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#define ETHERTYPE_DECDTS 0x803E /* DEC Distributed Time Service */
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#define ETHERTYPE_DECLTM 0x803F /* DEC LAN Traffic Monitor */
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#define ETHERTYPE_DECNETBIOS 0x8040 /* DEC PATHWORKS DECnet NETBIOS Emulation */
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#define ETHERTYPE_DECLAST 0x8041 /* DEC Local Area System Transport */
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/* 0x8042 DEC Unassigned */
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#define ETHERTYPE_PLANNING 0x8044 /* Planning Research Corp. */
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/* 0x8046 - 0x8047 AT&T */
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#define ETHERTYPE_DECAM 0x8048 /* DEC Availability Manager for Distributed Systems DECamds (but someone at DEC says not) */
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#define ETHERTYPE_EXPERDATA 0x8049 /* ExperData */
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#define ETHERTYPE_VEXP 0x805B /* Stanford V Kernel exp. */
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#define ETHERTYPE_VPROD 0x805C /* Stanford V Kernel prod. */
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#define ETHERTYPE_ES 0x805D /* Evans & Sutherland */
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#define ETHERTYPE_LITTLE 0x8060 /* Little Machines */
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#define ETHERTYPE_COUNTERPOINT 0x8062 /* Counterpoint Computers */
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/* 0x8065 - 0x8066 Univ. of Mass @ Amherst */
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#define ETHERTYPE_VEECO 0x8067 /* Veeco Integrated Auto. */
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#define ETHERTYPE_GENDYN 0x8068 /* General Dynamics */
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#define ETHERTYPE_ATT 0x8069 /* AT&T */
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#define ETHERTYPE_AUTOPHON 0x806A /* Autophon */
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#define ETHERTYPE_COMDESIGN 0x806C /* ComDesign */
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#define ETHERTYPE_COMPUGRAPHIC 0x806D /* Compugraphic Corporation */
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/* 0x806E - 0x8077 Landmark Graphics Corp. */
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#define ETHERTYPE_MATRA 0x807A /* Matra */
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#define ETHERTYPE_DDE 0x807B /* Dansk Data Elektronik */
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#define ETHERTYPE_MERIT 0x807C /* Merit Internodal (or Univ of Michigan?) */
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/* 0x807D - 0x807F Vitalink Communications */
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#define ETHERTYPE_VLTLMAN 0x8080 /* Vitalink TransLAN III Management */
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/* 0x8081 - 0x8083 Counterpoint Computers */
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/* 0x8088 - 0x808A Xyplex */
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#define ETHERTYPE_ATALK 0x809B /* AppleTalk */
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#define ETHERTYPE_AT ETHERTYPE_ATALK /* old NetBSD */
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#define ETHERTYPE_APPLETALK ETHERTYPE_ATALK /* HP-UX */
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/* 0x809C - 0x809E Datability */
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#define ETHERTYPE_SPIDER 0x809F /* Spider Systems Ltd. */
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/* 0x80A3 Nixdorf */
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/* 0x80A4 - 0x80B3 Siemens Gammasonics Inc. */
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/* 0x80C0 - 0x80C3 DCA (Digital Comm. Assoc.) Data Exchange Cluster */
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/* 0x80C4 - 0x80C5 Banyan Systems */
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#define ETHERTYPE_PACER 0x80C6 /* Pacer Software */
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#define ETHERTYPE_APPLITEK 0x80C7 /* Applitek Corporation */
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/* 0x80C8 - 0x80CC Intergraph Corporation */
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/* 0x80CD - 0x80CE Harris Corporation */
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/* 0x80CF - 0x80D2 Taylor Instrument */
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/* 0x80D3 - 0x80D4 Rosemount Corporation */
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#define ETHERTYPE_SNA 0x80D5 /* IBM SNA Services over Ethernet */
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#define ETHERTYPE_VARIAN 0x80DD /* Varian Associates */
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/* 0x80DE - 0x80DF TRFS (Integrated Solutions Transparent Remote File System) */
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/* 0x80E0 - 0x80E3 Allen-Bradley */
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/* 0x80E4 - 0x80F0 Datability */
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#define ETHERTYPE_RETIX 0x80F2 /* Retix */
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#define ETHERTYPE_AARP 0x80F3 /* AppleTalk AARP */
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/* 0x80F4 - 0x80F5 Kinetics */
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#define ETHERTYPE_APOLLO 0x80F7 /* Apollo Computer */
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#define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging (XXX conflicts) */
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/* 0x80FF - 0x8101 Wellfleet Communications (XXX conflicts) */
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#define ETHERTYPE_BOFL 0x8102 /* Wellfleet; BOFL (Breath OF Life) pkts [every 5-10 secs.] */
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#define ETHERTYPE_WELLFLEET 0x8103 /* Wellfleet Communications */
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/* 0x8107 - 0x8109 Symbolics Private */
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#define ETHERTYPE_TALARIS 0x812B /* Talaris */
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#define ETHERTYPE_WATERLOO 0x8130 /* Waterloo Microsystems Inc. (XXX which?) */
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#define ETHERTYPE_HAYES 0x8130 /* Hayes Microcomputers (XXX which?) */
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#define ETHERTYPE_VGLAB 0x8131 /* VG Laboratory Systems */
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/* 0x8132 - 0x8137 Bridge Communications */
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#define ETHERTYPE_IPX 0x8137 /* Novell (old) NetWare IPX (ECONFIG E option) */
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#define ETHERTYPE_NOVELL 0x8138 /* Novell, Inc. */
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/* 0x8139 - 0x813D KTI */
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#define ETHERTYPE_MUMPS 0x813F /* M/MUMPS data sharing */
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#define ETHERTYPE_AMOEBA 0x8145 /* Vrije Universiteit (NL) Amoeba 4 RPC (obsolete) */
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#define ETHERTYPE_FLIP 0x8146 /* Vrije Universiteit (NL) FLIP (Fast Local Internet Protocol) */
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#define ETHERTYPE_VURESERVED 0x8147 /* Vrije Universiteit (NL) [reserved] */
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#define ETHERTYPE_LOGICRAFT 0x8148 /* Logicraft */
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#define ETHERTYPE_NCD 0x8149 /* Network Computing Devices */
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#define ETHERTYPE_ALPHA 0x814A /* Alpha Micro */
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#define ETHERTYPE_SNMP 0x814C /* SNMP over Ethernet (see RFC1089) */
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/* 0x814D - 0x814E BIIN */
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#define ETHERTYPE_TEC 0x814F /* Technically Elite Concepts */
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#define ETHERTYPE_RATIONAL 0x8150 /* Rational Corp */
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/* 0x8151 - 0x8153 Qualcomm */
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/* 0x815C - 0x815E Computer Protocol Pty Ltd */
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/* 0x8164 - 0x8166 Charles River Data Systems */
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#define ETHERTYPE_XTP 0x817D /* Protocol Engines XTP */
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#define ETHERTYPE_SGITW 0x817E /* SGI/Time Warner prop. */
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#define ETHERTYPE_HIPPI_FP 0x8180 /* HIPPI-FP encapsulation */
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#define ETHERTYPE_STP 0x8181 /* Scheduled Transfer STP, HIPPI-ST */
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/* 0x8182 - 0x8183 Reserved for HIPPI-6400 */
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/* 0x8184 - 0x818C SGI prop. */
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#define ETHERTYPE_MOTOROLA 0x818D /* Motorola */
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#define ETHERTYPE_NETBEUI 0x8191 /* PowerLAN NetBIOS/NetBEUI (PC) */
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/* 0x819A - 0x81A3 RAD Network Devices */
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/* 0x81B7 - 0x81B9 Xyplex */
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/* 0x81CC - 0x81D5 Apricot Computers */
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/* 0x81D6 - 0x81DD Artisoft Lantastic */
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/* 0x81E6 - 0x81EF Polygon */
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/* 0x81F0 - 0x81F2 Comsat Labs */
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/* 0x81F3 - 0x81F5 SAIC */
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/* 0x81F6 - 0x81F8 VG Analytical */
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/* 0x8203 - 0x8205 QNX Software Systems Ltd. */
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/* 0x8221 - 0x8222 Ascom Banking Systems */
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/* 0x823E - 0x8240 Advanced Encryption Systems */
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/* 0x8263 - 0x826A Charles River Data Systems */
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/* 0x827F - 0x8282 Athena Programming */
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/* 0x829A - 0x829B Inst Ind Info Tech */
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/* 0x829C - 0x82AB Taurus Controls */
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/* 0x82AC - 0x8693 Walker Richer & Quinn */
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#define ETHERTYPE_ACCTON 0x8390 /* Accton Technologies (unregistered) */
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#define ETHERTYPE_TALARISMC 0x852B /* Talaris multicast */
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#define ETHERTYPE_KALPANA 0x8582 /* Kalpana */
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/* 0x8694 - 0x869D Idea Courier */
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/* 0x869E - 0x86A1 Computer Network Tech */
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/* 0x86A3 - 0x86AC Gateway Communications */
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#define ETHERTYPE_SECTRA 0x86DB /* SECTRA */
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#define ETHERTYPE_IPV6 0x86DD /* IP protocol version 6 */
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#define ETHERTYPE_DELTACON 0x86DE /* Delta Controls */
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#define ETHERTYPE_ATOMIC 0x86DF /* ATOMIC */
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/* 0x86E0 - 0x86EF Landis & Gyr Powers */
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/* 0x8700 - 0x8710 Motorola */
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#define ETHERTYPE_RDP 0x8739 /* Control Technology Inc. RDP Without IP */
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#define ETHERTYPE_MICP 0x873A /* Control Technology Inc. Mcast Industrial Ctrl Proto. */
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/* 0x873B - 0x873C Control Technology Inc. Proprietary */
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#define ETHERTYPE_TCPCOMP 0x876B /* TCP/IP Compression (RFC1701) */
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#define ETHERTYPE_IPAS 0x876C /* IP Autonomous Systems (RFC1701) */
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#define ETHERTYPE_SECUREDATA 0x876D /* Secure Data (RFC1701) */
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#define ETHERTYPE_FLOWCONTROL 0x8808 /* 802.3x flow control packet */
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#define ETHERTYPE_SLOW 0x8809 /* 802.3ad link aggregation (LACP) */
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#define ETHERTYPE_PPP 0x880B /* PPP (obsolete by PPPoE) */
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#define ETHERTYPE_HITACHI 0x8820 /* Hitachi Cable (Optoelectronic Systems Laboratory) */
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#define ETHERTYPE_TEST 0x8822 /* Network Conformance Testing */
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#define ETHERTYPE_MPLS 0x8847 /* MPLS Unicast */
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#define ETHERTYPE_MPLS_MCAST 0x8848 /* MPLS Multicast */
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#define ETHERTYPE_AXIS 0x8856 /* Axis Communications AB proprietary bootstrap/config */
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#define ETHERTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
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#define ETHERTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
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#define ETHERTYPE_LANPROBE 0x8888 /* HP LanProbe test? */
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#define ETHERTYPE_PAE 0x888e /* EAPOL PAE/802.1x */
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#define ETHERTYPE_QINQ 0x88A8 /* 802.1ad VLAN stacking */
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#define ETHERTYPE_LOOPBACK 0x9000 /* Loopback: used to test interfaces */
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#define ETHERTYPE_LBACK ETHERTYPE_LOOPBACK /* DEC MOP loopback */
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#define ETHERTYPE_XNSSM 0x9001 /* 3Com (Formerly Bridge Communications), XNS Systems Management */
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#define ETHERTYPE_TCPSM 0x9002 /* 3Com (Formerly Bridge Communications), TCP/IP Systems Management */
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#define ETHERTYPE_BCLOOP 0x9003 /* 3Com (Formerly Bridge Communications), loopback detection */
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#define ETHERTYPE_DEBNI 0xAAAA /* DECNET? Used by VAX 6220 DEBNI */
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#define ETHERTYPE_SONIX 0xFAF5 /* Sonix Arpeggio */
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#define ETHERTYPE_VITAL 0xFF00 /* BBN VITAL-LanBridge cache wakeups */
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/* 0xFF00 - 0xFFOF ISC Bunker Ramo */
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#define ETHERTYPE_MAX 0xFFFF /* Maximum valid ethernet type, reserved */
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/*
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* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
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* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
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* by an ETHER type (as given above) and then the (variable-length) header.
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*/
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#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
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#define ETHERTYPE_NTRAILER 16
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#define ETHERMTU (ETHER_MAX_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
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#define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
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#define ETHERMTU_JUMBO (ETHER_MAX_LEN_JUMBO - ETHER_HDR_LEN - ETHER_CRC_LEN)
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/*
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* The ETHER_BPF_MTAP macro should be used by drivers which support hardware
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* offload for VLAN tag processing. It will check the mbuf to see if it has
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* M_VLANTAG set, and if it does, will pass the packet along to
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* ether_vlan_mtap. This function will re-insert VLAN tags for the duration
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* of the tap, so they show up properly for network analyzers.
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*/
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#define ETHER_BPF_MTAP(_ifp, _m) do { \
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if (bpf_peers_present((_ifp)->if_bpf)) { \
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M_ASSERTVALID(_m); \
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if (((_m)->m_flags & M_VLANTAG) != 0) \
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ether_vlan_mtap((_ifp)->if_bpf, (_m), NULL, 0); \
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else \
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bpf_mtap((_ifp)->if_bpf, (_m)); \
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} \
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} while (0)
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/*
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* Names for 802.1q priorities ("802.1p"). Notice that in this scheme,
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* (0 < 1), allowing default 0-tagged traffic to take priority over background
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* tagged traffic.
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*/
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#define IEEE8021Q_PCP_BK 1 /* Background (lowest) */
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#define IEEE8021Q_PCP_BE 0 /* Best effort (default) */
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#define IEEE8021Q_PCP_EE 2 /* Excellent effort */
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#define IEEE8021Q_PCP_CA 3 /* Critical applications */
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#define IEEE8021Q_PCP_VI 4 /* Video, < 100ms latency */
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#define IEEE8021Q_PCP_VO 5 /* Video, < 10ms latency */
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#define IEEE8021Q_PCP_IC 6 /* Internetwork control */
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#define IEEE8021Q_PCP_NC 7 /* Network control (highest) */
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#ifdef _KERNEL
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struct ifnet;
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struct mbuf;
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struct route;
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struct sockaddr;
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struct bpf_if;
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extern uint32_t ether_crc32_le(const uint8_t *, size_t);
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extern uint32_t ether_crc32_be(const uint8_t *, size_t);
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extern void ether_demux(struct ifnet *, struct mbuf *);
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extern void ether_ifattach(struct ifnet *, const u_int8_t *);
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extern void ether_ifdetach(struct ifnet *);
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extern int ether_ioctl(struct ifnet *, u_long, caddr_t);
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extern int ether_output(struct ifnet *, struct mbuf *,
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const struct sockaddr *, struct route *);
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extern int ether_output_frame(struct ifnet *, struct mbuf *);
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extern char *ether_sprintf(const u_int8_t *);
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void ether_vlan_mtap(struct bpf_if *, struct mbuf *,
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void *, u_int);
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struct mbuf *ether_vlanencap(struct mbuf *, uint16_t);
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bool ether_8021q_frame(struct mbuf **mp, struct ifnet *ife, struct ifnet *p,
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uint16_t vid, uint8_t pcp);
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#ifdef _SYS_EVENTHANDLER_H_
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/* new ethernet interface attached event */
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typedef void (*ether_ifattach_event_handler_t)(void *, struct ifnet *);
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EVENTHANDLER_DECLARE(ether_ifattach_event, ether_ifattach_event_handler_t);
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#endif
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#else /* _KERNEL */
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#include <sys/cdefs.h>
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/*
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* Ethernet address conversion/parsing routines.
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*/
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__BEGIN_DECLS
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struct ether_addr *ether_aton(const char *);
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struct ether_addr *ether_aton_r(const char *, struct ether_addr *);
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int ether_hostton(const char *, struct ether_addr *);
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int ether_line(const char *, struct ether_addr *, char *);
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char *ether_ntoa(const struct ether_addr *);
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char *ether_ntoa_r(const struct ether_addr *, char *);
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int ether_ntohost(char *, const struct ether_addr *);
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__END_DECLS
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#endif /* !_KERNEL */
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#endif /* !_NET_ETHERNET_H_ */
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