2017-11-01 22:09:13 +08:00
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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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2012-10-13 17:46:48 +08:00
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the Ethernet IEEE 802.3 interface.
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*
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* Version: @(#)if_ether.h 1.0.1a 02/08/94
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Donald Becker, <becker@super.org>
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* Alan Cox, <alan@lxorguk.ukuu.org.uk>
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* Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _UAPI_LINUX_IF_ETHER_H
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#define _UAPI_LINUX_IF_ETHER_H
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#include <linux/types.h>
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/*
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* IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble
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* and FCS/CRC (frame check sequence).
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*/
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#define ETH_ALEN 6 /* Octets in one ethernet addr */
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2018-03-13 13:51:27 +08:00
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#define ETH_TLEN 2 /* Octets in ethernet type field */
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2012-10-13 17:46:48 +08:00
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#define ETH_HLEN 14 /* Total octets in header. */
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#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
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#define ETH_DATA_LEN 1500 /* Max. octets in payload */
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#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
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#define ETH_FCS_LEN 4 /* Octets in the FCS */
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net: deprecate eth_change_mtu, remove usage
With centralized MTU checking, there's nothing productive done by
eth_change_mtu that isn't already done in dev_set_mtu, so mark it as
deprecated and remove all usage of it in the kernel. All callers have been
audited for calls to alloc_etherdev* or ether_setup directly, which means
they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu
prints out a netdev_warn about being deprecated, for the benefit of
out-of-tree drivers that might be utilizing it.
Of note, dvb_net.c actually had dev->mtu = 4096, while using
eth_change_mtu, meaning that if you ever tried changing it's mtu, you
couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set
to 4096 to remedy that.
v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86
CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-08 10:04:34 +08:00
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#define ETH_MIN_MTU 68 /* Min IPv4 MTU per RFC791 */
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ethernet: use net core MTU range checking in more drivers
Somehow, I missed a healthy number of ethernet drivers in the last pass.
Most of these drivers either were in need of an updated max_mtu to make
jumbo frames possible to enable again. In a few cases, also setting a
different min_mtu to match previous lower bounds. There are also a few
drivers that had no upper bounds checking, so they're getting a brand new
ETH_MAX_MTU that is identical to IP_MAX_MTU, but accessible by includes
all ethernet and ethernet-like drivers all have already.
acenic:
- min_mtu = 0, max_mtu = 9000
amazon/ena:
- min_mtu = 128, max_mtu = adapter->max_mtu
amd/xgbe:
- min_mtu = 0, max_mtu = 9000
sb1250:
- min_mtu = 0, max_mtu = 1518
cxgb3:
- min_mtu = 81, max_mtu = 65535
cxgb4:
- min_mtu = 81, max_mtu = 9600
cxgb4vf:
- min_mtu = 81, max_mtu = 65535
benet:
- min_mtu = 256, max_mtu = 9000
ibmveth:
- min_mtu = 68, max_mtu = 65535
ibmvnic:
- min_mtu = adapter->min_mtu, max_mtu = adapter->max_mtu
- remove now redundant ibmvnic_change_mtu
jme:
- min_mtu = 1280, max_mtu = 9202
mv643xx_eth:
- min_mtu = 64, max_mtu = 9500
mlxsw:
- min_mtu = 0, max_mtu = 65535
- Basically bypassing the core checks, and instead relying on dynamic
checks in the respective switch drivers' ndo_change_mtu functions
ns83820:
- min_mtu = 0
- remove redundant ns83820_change_mtu, only checked for mtu > 1500
netxen:
- min_mtu = 0, max_mtu = 8000 (P2), max_mtu = 9600 (P3)
qlge:
- min_mtu = 1500, max_mtu = 9000
- driver only supports setting mtu to 1500 or 9000, so the core check only
rules out < 1500 and > 9000, qlge_change_mtu still needs to check that
the value is 1500 or 9000
qualcomm/emac:
- min_mtu = 46, max_mtu = 9194
xilinx_axienet:
- min_mtu = 64, max_mtu = 9000
Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking")
CC: netdev@vger.kernel.org
CC: Jes Sorensen <jes@trained-monkey.org>
CC: Netanel Belgazal <netanel@annapurnalabs.com>
CC: Tom Lendacky <thomas.lendacky@amd.com>
CC: Santosh Raspatur <santosh@chelsio.com>
CC: Hariprasad S <hariprasad@chelsio.com>
CC: Sathya Perla <sathya.perla@broadcom.com>
CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
CC: Somnath Kotur <somnath.kotur@broadcom.com>
CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
CC: John Allen <jallen@linux.vnet.ibm.com>
CC: Guo-Fu Tseng <cooldavid@cooldavid.org>
CC: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
CC: Jiri Pirko <jiri@mellanox.com>
CC: Ido Schimmel <idosch@mellanox.com>
CC: Manish Chopra <manish.chopra@qlogic.com>
CC: Sony Chacko <sony.chacko@qlogic.com>
CC: Rajesh Borundia <rajesh.borundia@qlogic.com>
CC: Timur Tabi <timur@codeaurora.org>
CC: Anirudha Sarangi <anirudh@xilinx.com>
CC: John Linn <John.Linn@xilinx.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-21 01:55:16 +08:00
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#define ETH_MAX_MTU 0xFFFFU /* 65535, same as IP_MAX_MTU */
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net: deprecate eth_change_mtu, remove usage
With centralized MTU checking, there's nothing productive done by
eth_change_mtu that isn't already done in dev_set_mtu, so mark it as
deprecated and remove all usage of it in the kernel. All callers have been
audited for calls to alloc_etherdev* or ether_setup directly, which means
they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu
prints out a netdev_warn about being deprecated, for the benefit of
out-of-tree drivers that might be utilizing it.
Of note, dvb_net.c actually had dev->mtu = 4096, while using
eth_change_mtu, meaning that if you ever tried changing it's mtu, you
couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set
to 4096 to remedy that.
v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86
CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-08 10:04:34 +08:00
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2012-10-13 17:46:48 +08:00
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/*
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* These are the defined Ethernet Protocol ID's.
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*/
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#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */
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#define ETH_P_PUP 0x0200 /* Xerox PUP packet */
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#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
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2015-09-09 18:25:17 +08:00
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#define ETH_P_TSN 0x22F0 /* TSN (IEEE 1722) packet */
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2017-12-14 08:38:56 +08:00
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#define ETH_P_ERSPAN2 0x22EB /* ERSPAN version 2 (type III) */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_IP 0x0800 /* Internet Protocol packet */
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#define ETH_P_X25 0x0805 /* CCITT X.25 */
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#define ETH_P_ARP 0x0806 /* Address Resolution packet */
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#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */
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#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */
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#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */
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2012-10-30 12:08:41 +08:00
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#define ETH_P_BATMAN 0x4305 /* B.A.T.M.A.N.-Advanced packet [ NOT AN OFFICIALLY REGISTERED ID ] */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_DEC 0x6000 /* DEC Assigned proto */
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#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
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#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
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#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
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#define ETH_P_LAT 0x6004 /* DEC LAT */
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#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
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#define ETH_P_CUST 0x6006 /* DEC Customer use */
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#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
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#define ETH_P_TEB 0x6558 /* Trans Ether Bridging */
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#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
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#define ETH_P_ATALK 0x809B /* Appletalk DDP */
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#define ETH_P_AARP 0x80F3 /* Appletalk AARP */
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#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
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2017-08-23 00:40:28 +08:00
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#define ETH_P_ERSPAN 0x88BE /* ERSPAN type II */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_IPX 0x8137 /* IPX over DIX */
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#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
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#define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */
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#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */
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#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol
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* defined in draft-wilson-wrec-wccp-v2-00.txt */
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#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */
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#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */
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#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
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2014-02-25 19:17:25 +08:00
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#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
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#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_LINK_CTL 0x886c /* HPNA, wlan link local tunnel */
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#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport
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* over Ethernet
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*/
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#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
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#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */
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#define ETH_P_8021AD 0x88A8 /* 802.1ad Service VLAN */
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#define ETH_P_802_EX1 0x88B5 /* 802.1 Local Experimental 1. */
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2018-02-01 09:04:15 +08:00
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#define ETH_P_PREAUTH 0x88C7 /* 802.11 Preauthentication */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_TIPC 0x88CA /* TIPC */
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2019-04-12 00:11:33 +08:00
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#define ETH_P_LLDP 0x88CC /* Link Layer Discovery Protocol */
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2016-03-12 01:07:31 +08:00
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#define ETH_P_MACSEC 0x88E5 /* 802.1ae MACsec */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */
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2013-02-09 01:17:07 +08:00
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#define ETH_P_MVRP 0x88F5 /* 802.1Q MVRP */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */
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2016-07-19 09:54:17 +08:00
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#define ETH_P_NCSI 0x88F8 /* NCSI protocol */
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2013-10-31 04:10:47 +08:00
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#define ETH_P_PRP 0x88FB /* IEC 62439-3 PRP/HSRv0 */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */
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2016-12-20 03:28:46 +08:00
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#define ETH_P_IBOE 0x8915 /* Infiniband over Ethernet */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_TDLS 0x890D /* TDLS */
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#define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */
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2014-03-04 00:23:10 +08:00
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#define ETH_P_80221 0x8917 /* IEEE 802.21 Media Independent Handover Protocol */
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2016-04-13 19:52:22 +08:00
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#define ETH_P_HSR 0x892F /* IEC 62439-3 HSRv1 */
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2017-08-29 03:43:21 +08:00
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#define ETH_P_NSH 0x894F /* Network Service Header */
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2014-03-13 19:41:57 +08:00
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#define ETH_P_LOOPBACK 0x9000 /* Ethernet loopback packet, per IEEE 802.3 */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
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#define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
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#define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
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#define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
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2019-05-03 04:23:33 +08:00
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#define ETH_P_DSA_8021Q 0xDADB /* Fake VLAN Header for DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
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2017-08-29 03:03:13 +08:00
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#define ETH_P_IFE 0xED3E /* ForCES inter-FE LFB type */
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2012-10-13 17:46:48 +08:00
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#define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */
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2013-03-28 12:38:25 +08:00
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#define ETH_P_802_3_MIN 0x0600 /* If the value in the ethernet type is less than this value
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* then the frame is Ethernet II. Else it is 802.3 */
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2012-10-13 17:46:48 +08:00
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/*
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* Non DIX types. Won't clash for 1500 types.
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*/
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#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
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#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
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#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
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#define ETH_P_802_2 0x0004 /* 802.2 frames */
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#define ETH_P_SNAP 0x0005 /* Internal only */
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#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
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#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
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#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
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#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
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#define ETH_P_CAN 0x000C /* CAN: Controller Area Network */
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#define ETH_P_CANFD 0x000D /* CANFD: CAN flexible data rate*/
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#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
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#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
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#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
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#define ETH_P_CONTROL 0x0016 /* Card specific control frames */
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#define ETH_P_IRDA 0x0017 /* Linux-IrDA */
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#define ETH_P_ECONET 0x0018 /* Acorn Econet */
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#define ETH_P_HDLC 0x0019 /* HDLC frames */
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#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */
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#define ETH_P_DSA 0x001B /* Distributed Switch Arch. */
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#define ETH_P_TRAILER 0x001C /* Trailer switch tagging */
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#define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */
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#define ETH_P_IEEE802154 0x00F6 /* IEEE802.15.4 frame */
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#define ETH_P_CAIF 0x00F7 /* ST-Ericsson CAIF protocol */
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2014-08-28 08:04:46 +08:00
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#define ETH_P_XDSA 0x00F8 /* Multiplexed DSA protocol */
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2017-08-30 12:44:16 +08:00
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#define ETH_P_MAP 0x00F9 /* Qualcomm multiplexing and
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* aggregation protocol
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*/
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2012-10-13 17:46:48 +08:00
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/*
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* This is an Ethernet frame header.
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*/
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2018-02-13 06:59:51 +08:00
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/* allow libcs like musl to deactivate this, glibc does not implement this. */
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#ifndef __UAPI_DEF_ETHHDR
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#define __UAPI_DEF_ETHHDR 1
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#endif
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2018-01-04 06:14:21 +08:00
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#if __UAPI_DEF_ETHHDR
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2012-10-13 17:46:48 +08:00
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struct ethhdr {
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unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
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unsigned char h_source[ETH_ALEN]; /* source ether addr */
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__be16 h_proto; /* packet type ID field */
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} __attribute__((packed));
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2018-01-04 06:14:21 +08:00
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#endif
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2012-10-13 17:46:48 +08:00
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#endif /* _UAPI_LINUX_IF_ETHER_H */
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