f3e7afe2d7
- Add RATELIMIT kernel configuration keyword which must be set to enable the new functionality. - Add support for hardware driven, Receive Side Scaling, RSS aware, rate limited sendqueues and expose the functionality through the already established SO_MAX_PACING_RATE setsockopt(). The API support rates in the range from 1 to 4Gbytes/s which are suitable for regular TCP and UDP streams. The setsockopt(2) manual page has been updated. - Add rate limit function callback API to "struct ifnet" which supports the following operations: if_snd_tag_alloc(), if_snd_tag_modify(), if_snd_tag_query() and if_snd_tag_free(). - Add support to ifconfig to view, set and clear the IFCAP_TXRTLMT flag, which tells if a network driver supports rate limiting or not. - This patch also adds support for rate limiting through VLAN and LAGG intermediate network devices. - How rate limiting works: 1) The userspace application calls setsockopt() after accepting or making a new connection to set the rate which is then stored in the socket structure in the kernel. Later on when packets are transmitted a check is made in the transmit path for rate changes. A rate change implies a non-blocking ifp->if_snd_tag_alloc() call will be made to the destination network interface, which then sets up a custom sendqueue with the given rate limitation parameter. A "struct m_snd_tag" pointer is returned which serves as a "snd_tag" hint in the m_pkthdr for the subsequently transmitted mbufs. 2) When the network driver sees the "m->m_pkthdr.snd_tag" different from NULL, it will move the packets into a designated rate limited sendqueue given by the snd_tag pointer. It is up to the individual drivers how the rate limited traffic will be rate limited. 3) Route changes are detected by the NIC drivers in the ifp->if_transmit() routine when the ifnet pointer in the incoming snd_tag mismatches the one of the network interface. The network adapter frees the mbuf and returns EAGAIN which causes the ip_output() to release and clear the send tag. Upon next ip_output() a new "snd_tag" will be tried allocated. 4) When the PCB is detached the custom sendqueue will be released by a non-blocking ifp->if_snd_tag_free() call to the currently bound network interface. Reviewed by: wblock (manpages), adrian, gallatin, scottl (network) Differential Revision: https://reviews.freebsd.org/D3687 Sponsored by: Mellanox Technologies MFC after: 3 months
552 lines
20 KiB
C
552 lines
20 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NET_IF_H_
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#define _NET_IF_H_
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#include <sys/cdefs.h>
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#if __BSD_VISIBLE
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/*
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* <net/if.h> does not depend on <sys/time.h> on most other systems. This
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* helps userland compatibility. (struct timeval ifi_lastchange)
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* The same holds for <sys/socket.h>. (struct sockaddr ifru_addr)
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*/
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#ifndef _KERNEL
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#include <sys/time.h>
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#include <sys/socket.h>
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#endif
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#endif
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/*
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* Length of interface external name, including terminating '\0'.
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* Note: this is the same size as a generic device's external name.
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*/
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#define IF_NAMESIZE 16
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#if __BSD_VISIBLE
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#define IFNAMSIZ IF_NAMESIZE
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#define IF_MAXUNIT 0x7fff /* historical value */
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#endif
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#if __BSD_VISIBLE
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/*
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* Structure used to query names of interface cloners.
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*/
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struct if_clonereq {
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int ifcr_total; /* total cloners (out) */
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int ifcr_count; /* room for this many in user buffer */
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char *ifcr_buffer; /* buffer for cloner names */
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};
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/*
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* Structure describing information about an interface
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* which may be of interest to management entities.
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*/
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struct if_data {
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/* generic interface information */
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uint8_t ifi_type; /* ethernet, tokenring, etc */
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uint8_t ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
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uint8_t ifi_addrlen; /* media address length */
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uint8_t ifi_hdrlen; /* media header length */
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uint8_t ifi_link_state; /* current link state */
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uint8_t ifi_vhid; /* carp vhid */
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uint16_t ifi_datalen; /* length of this data struct */
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uint32_t ifi_mtu; /* maximum transmission unit */
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uint32_t ifi_metric; /* routing metric (external only) */
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uint64_t ifi_baudrate; /* linespeed */
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/* volatile statistics */
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uint64_t ifi_ipackets; /* packets received on interface */
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uint64_t ifi_ierrors; /* input errors on interface */
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uint64_t ifi_opackets; /* packets sent on interface */
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uint64_t ifi_oerrors; /* output errors on interface */
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uint64_t ifi_collisions; /* collisions on csma interfaces */
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uint64_t ifi_ibytes; /* total number of octets received */
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uint64_t ifi_obytes; /* total number of octets sent */
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uint64_t ifi_imcasts; /* packets received via multicast */
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uint64_t ifi_omcasts; /* packets sent via multicast */
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uint64_t ifi_iqdrops; /* dropped on input */
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uint64_t ifi_oqdrops; /* dropped on output */
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uint64_t ifi_noproto; /* destined for unsupported protocol */
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uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */
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/* Unions are here to make sizes MI. */
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union { /* uptime at attach or stat reset */
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time_t tt;
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uint64_t ph;
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} __ifi_epoch;
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#define ifi_epoch __ifi_epoch.tt
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union { /* time of last administrative change */
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struct timeval tv;
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struct {
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uint64_t ph1;
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uint64_t ph2;
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} ph;
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} __ifi_lastchange;
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#define ifi_lastchange __ifi_lastchange.tv
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};
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/*-
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* Interface flags are of two types: network stack owned flags, and driver
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* owned flags. Historically, these values were stored in the same ifnet
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* flags field, but with the advent of fine-grained locking, they have been
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* broken out such that the network stack is responsible for synchronizing
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* the stack-owned fields, and the device driver the device-owned fields.
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* Both halves can perform lockless reads of the other half's field, subject
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* to accepting the involved races.
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*
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* Both sets of flags come from the same number space, and should not be
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* permitted to conflict, as they are exposed to user space via a single
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* field.
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*
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* The following symbols identify read and write requirements for fields:
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*
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* (i) if_flags field set by device driver before attach, read-only there
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* after.
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* (n) if_flags field written only by the network stack, read by either the
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* stack or driver.
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* (d) if_drv_flags field written only by the device driver, read by either
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* the stack or driver.
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*/
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#define IFF_UP 0x1 /* (n) interface is up */
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#define IFF_BROADCAST 0x2 /* (i) broadcast address valid */
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#define IFF_DEBUG 0x4 /* (n) turn on debugging */
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#define IFF_LOOPBACK 0x8 /* (i) is a loopback net */
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#define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */
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/* 0x20 was IFF_SMART */
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#define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */
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#define IFF_NOARP 0x80 /* (n) no address resolution protocol */
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#define IFF_PROMISC 0x100 /* (n) receive all packets */
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#define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */
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#define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */
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#define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */
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#define IFF_LINK0 0x1000 /* per link layer defined bit */
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#define IFF_LINK1 0x2000 /* per link layer defined bit */
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#define IFF_LINK2 0x4000 /* per link layer defined bit */
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#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
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#define IFF_MULTICAST 0x8000 /* (i) supports multicast */
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#define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */
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#define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */
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#define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */
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#define IFF_STATICARP 0x80000 /* (n) static ARP */
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#define IFF_DYING 0x200000 /* (n) interface is winding down */
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#define IFF_RENAMING 0x400000 /* (n) interface is being renamed */
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/*
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* Old names for driver flags so that user space tools can continue to use
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* the old (portable) names.
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*/
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#ifndef _KERNEL
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#define IFF_RUNNING IFF_DRV_RUNNING
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#define IFF_OACTIVE IFF_DRV_OACTIVE
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#endif
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/* flags set internally only: */
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#define IFF_CANTCHANGE \
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(IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
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IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\
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IFF_DYING|IFF_CANTCONFIG)
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/*
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* Values for if_link_state.
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*/
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#define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
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#define LINK_STATE_DOWN 1 /* link is down */
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#define LINK_STATE_UP 2 /* link is up */
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/*
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* Some convenience macros used for setting ifi_baudrate.
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* XXX 1000 vs. 1024? --thorpej@netbsd.org
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*/
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#define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */
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#define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
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#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
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/*
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* Capabilities that interfaces can advertise.
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*
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* struct ifnet.if_capabilities
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* contains the optional features & capabilities a particular interface
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* supports (not only the driver but also the detected hw revision).
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* Capabilities are defined by IFCAP_* below.
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* struct ifnet.if_capenable
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* contains the enabled (either by default or through ifconfig) optional
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* features & capabilities on this interface.
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* Capabilities are defined by IFCAP_* below.
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* struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above
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* contains the enabled optional feature & capabilites that can be used
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* individually per packet and are specified in the mbuf pkthdr.csum_flags
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* field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be
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* more detailed or differenciated than IFCAP_*.
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* Hwassist features are defined CSUM_* in sys/mbuf.h
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*
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* Capabilities that cannot be arbitrarily changed with ifconfig/ioctl
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* are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE.
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* This is not strictly necessary because the common code never
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* changes capabilities, and it is left to the individual driver
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* to do the right thing. However, having the filter here
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* avoids replication of the same code in all individual drivers.
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*/
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#define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */
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#define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */
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#define IFCAP_NETCONS 0x00004 /* can be a network console */
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#define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */
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#define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */
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#define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */
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#define IFCAP_POLLING 0x00040 /* driver supports polling */
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#define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */
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#define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */
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#define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */
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#define IFCAP_LRO 0x00400 /* can do Large Receive Offload */
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#define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */
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#define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */
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#define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */
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#define IFCAP_TOE4 0x04000 /* interface can offload TCP */
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#define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */
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#define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */
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#define IFCAP_POLLING_NOCOUNT 0x20000 /* polling ticks cannot be fragmented */
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#define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */
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#define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */
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#define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */
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#define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */
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#define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */
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#define IFCAP_HWSTATS 0x800000 /* manages counters internally */
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#define IFCAP_TXRTLMT 0x1000000 /* hardware supports TX rate limiting */
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#define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6)
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#define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
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#define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6)
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#define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC)
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#define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6)
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#define IFCAP_CANTCHANGE (IFCAP_NETMAP)
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#define IFQ_MAXLEN 50
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#define IFNET_SLOWHZ 1 /* granularity is 1 second */
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/*
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* Message format for use in obtaining information about interfaces
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* from getkerninfo and the routing socket
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* For the new, extensible interface see struct if_msghdrl below.
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*/
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struct if_msghdr {
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u_short ifm_msglen; /* to skip over non-understood messages */
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u_char ifm_version; /* future binary compatibility */
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u_char ifm_type; /* message type */
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int ifm_addrs; /* like rtm_addrs */
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int ifm_flags; /* value of if_flags */
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u_short ifm_index; /* index for associated ifp */
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struct if_data ifm_data;/* statistics and other data about if */
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};
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/*
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* The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
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* extensible after ifm_data_off or within ifm_data. Both the if_msghdr and
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* if_data now have a member field detailing the struct length in addition to
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* the routing message length. Macros are provided to find the start of
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* ifm_data and the start of the socket address strucutres immediately following
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* struct if_msghdrl given a pointer to struct if_msghdrl.
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*/
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#define IF_MSGHDRL_IFM_DATA(_l) \
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(struct if_data *)((char *)(_l) + (_l)->ifm_data_off)
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#define IF_MSGHDRL_RTA(_l) \
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(void *)((uintptr_t)(_l) + (_l)->ifm_len)
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struct if_msghdrl {
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u_short ifm_msglen; /* to skip over non-understood messages */
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u_char ifm_version; /* future binary compatibility */
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u_char ifm_type; /* message type */
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int ifm_addrs; /* like rtm_addrs */
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int ifm_flags; /* value of if_flags */
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u_short ifm_index; /* index for associated ifp */
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u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */
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u_short ifm_len; /* length of if_msghdrl incl. if_data */
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u_short ifm_data_off; /* offset of if_data from beginning */
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struct if_data ifm_data;/* statistics and other data about if */
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};
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/*
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* Message format for use in obtaining information about interface addresses
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* from getkerninfo and the routing socket
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* For the new, extensible interface see struct ifa_msghdrl below.
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*/
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struct ifa_msghdr {
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u_short ifam_msglen; /* to skip over non-understood messages */
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u_char ifam_version; /* future binary compatibility */
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u_char ifam_type; /* message type */
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int ifam_addrs; /* like rtm_addrs */
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int ifam_flags; /* value of ifa_flags */
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u_short ifam_index; /* index for associated ifp */
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int ifam_metric; /* value of ifa_ifp->if_metric */
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};
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/*
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* The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
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* extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and
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* if_data now have a member field detailing the struct length in addition to
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* the routing message length. Macros are provided to find the start of
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* ifm_data and the start of the socket address strucutres immediately following
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* struct ifa_msghdrl given a pointer to struct ifa_msghdrl.
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*/
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#define IFA_MSGHDRL_IFAM_DATA(_l) \
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(struct if_data *)((char *)(_l) + (_l)->ifam_data_off)
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#define IFA_MSGHDRL_RTA(_l) \
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(void *)((uintptr_t)(_l) + (_l)->ifam_len)
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struct ifa_msghdrl {
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u_short ifam_msglen; /* to skip over non-understood messages */
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u_char ifam_version; /* future binary compatibility */
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u_char ifam_type; /* message type */
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int ifam_addrs; /* like rtm_addrs */
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int ifam_flags; /* value of ifa_flags */
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u_short ifam_index; /* index for associated ifp */
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u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */
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u_short ifam_len; /* length of ifa_msghdrl incl. if_data */
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u_short ifam_data_off; /* offset of if_data from beginning */
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int ifam_metric; /* value of ifa_ifp->if_metric */
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struct if_data ifam_data;/* statistics and other data about if or
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* address */
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};
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/*
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* Message format for use in obtaining information about multicast addresses
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* from the routing socket
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*/
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struct ifma_msghdr {
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u_short ifmam_msglen; /* to skip over non-understood messages */
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u_char ifmam_version; /* future binary compatibility */
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u_char ifmam_type; /* message type */
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int ifmam_addrs; /* like rtm_addrs */
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int ifmam_flags; /* value of ifa_flags */
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u_short ifmam_index; /* index for associated ifp */
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};
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/*
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* Message format announcing the arrival or departure of a network interface.
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*/
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struct if_announcemsghdr {
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u_short ifan_msglen; /* to skip over non-understood messages */
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u_char ifan_version; /* future binary compatibility */
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u_char ifan_type; /* message type */
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u_short ifan_index; /* index for associated ifp */
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char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
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u_short ifan_what; /* what type of announcement */
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};
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#define IFAN_ARRIVAL 0 /* interface arrival */
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#define IFAN_DEPARTURE 1 /* interface departure */
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/*
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* Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests
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*/
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struct ifreq_buffer {
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size_t length;
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void *buffer;
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};
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/*
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* Interface request structure used for socket
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* 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;
|
|
struct ifreq_buffer ifru_buffer;
|
|
short ifru_flags[2];
|
|
short ifru_index;
|
|
int ifru_jid;
|
|
int ifru_metric;
|
|
int ifru_mtu;
|
|
int ifru_phys;
|
|
int ifru_media;
|
|
caddr_t ifru_data;
|
|
int ifru_cap[2];
|
|
u_int ifru_fib;
|
|
u_char ifru_vlan_pcp;
|
|
} 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_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */
|
|
#define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
|
|
#define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
|
|
#define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */
|
|
#define ifr_metric ifr_ifru.ifru_metric /* metric */
|
|
#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
|
|
#define ifr_phys ifr_ifru.ifru_phys /* physical wire */
|
|
#define ifr_media ifr_ifru.ifru_media /* physical media */
|
|
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
|
|
#define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
|
|
#define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
|
|
#define ifr_index ifr_ifru.ifru_index /* interface index */
|
|
#define ifr_fib ifr_ifru.ifru_fib /* interface fib */
|
|
#define ifr_vlan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */
|
|
};
|
|
|
|
#define _SIZEOF_ADDR_IFREQ(ifr) \
|
|
((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
|
|
(sizeof(struct ifreq) - sizeof(struct sockaddr) + \
|
|
(ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
|
|
|
|
struct ifaliasreq {
|
|
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
struct sockaddr ifra_addr;
|
|
struct sockaddr ifra_broadaddr;
|
|
struct sockaddr ifra_mask;
|
|
int ifra_vhid;
|
|
};
|
|
|
|
/* 9.x compat */
|
|
struct oifaliasreq {
|
|
char ifra_name[IFNAMSIZ];
|
|
struct sockaddr ifra_addr;
|
|
struct sockaddr ifra_broadaddr;
|
|
struct sockaddr ifra_mask;
|
|
};
|
|
|
|
struct ifmediareq {
|
|
char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
int ifm_current; /* current media options */
|
|
int ifm_mask; /* don't care mask */
|
|
int ifm_status; /* media status */
|
|
int ifm_active; /* active options */
|
|
int ifm_count; /* # entries in ifm_ulist array */
|
|
int *ifm_ulist; /* media words */
|
|
};
|
|
|
|
struct ifdrv {
|
|
char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
unsigned long ifd_cmd;
|
|
size_t ifd_len;
|
|
void *ifd_data;
|
|
};
|
|
|
|
/*
|
|
* Structure used to retrieve aux status data from interfaces.
|
|
* Kernel suppliers to this interface should respect the formatting
|
|
* needed by ifconfig(8): each line starts with a TAB and ends with
|
|
* a newline. The canonical example to copy and paste is in if_tun.c.
|
|
*/
|
|
|
|
#define IFSTATMAX 800 /* 10 lines of text */
|
|
struct ifstat {
|
|
char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
char ascii[IFSTATMAX + 1];
|
|
};
|
|
|
|
/*
|
|
* 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 */
|
|
};
|
|
|
|
/*
|
|
* interface groups
|
|
*/
|
|
|
|
#define IFG_ALL "all" /* group contains all interfaces */
|
|
/* XXX: will we implement this? */
|
|
#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
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
} ifgr_ifgru;
|
|
#define ifgr_group ifgr_ifgru.ifgru_group
|
|
#define ifgr_groups ifgr_ifgru.ifgru_groups
|
|
};
|
|
|
|
/*
|
|
* Structure used to request i2c data
|
|
* from interface transceivers.
|
|
*/
|
|
struct ifi2creq {
|
|
uint8_t dev_addr; /* i2c address (0xA0, 0xA2) */
|
|
uint8_t offset; /* read offset */
|
|
uint8_t len; /* read length */
|
|
uint8_t spare0;
|
|
uint32_t spare1;
|
|
uint8_t data[8]; /* read buffer */
|
|
};
|
|
|
|
#endif /* __BSD_VISIBLE */
|
|
|
|
#ifdef _KERNEL
|
|
#ifdef MALLOC_DECLARE
|
|
MALLOC_DECLARE(M_IFADDR);
|
|
MALLOC_DECLARE(M_IFMADDR);
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef _KERNEL
|
|
struct if_nameindex {
|
|
unsigned int if_index; /* 1, 2, ... */
|
|
char *if_name; /* null terminated name: "le0", ... */
|
|
};
|
|
|
|
__BEGIN_DECLS
|
|
void if_freenameindex(struct if_nameindex *);
|
|
char *if_indextoname(unsigned int, char *);
|
|
struct if_nameindex *if_nameindex(void);
|
|
unsigned int if_nametoindex(const char *);
|
|
__END_DECLS
|
|
#endif
|
|
#endif /* !_NET_IF_H_ */
|