3264dcadc9
subsystems tend to need to know about it, and including if_var.h is huge header pollution for them. Polluting possible non-network users with single symbol seems much lesser evil. - Remove non-preemptible network epoch. Not used yet, and unlikely to get used in close future.
801 lines
30 KiB
C
801 lines
30 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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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* 3. 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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* From: @(#)if.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NET_IF_VAR_H_
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#define _NET_IF_VAR_H_
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/*
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* Structures defining a network interface, providing a packet
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* transport mechanism (ala level 0 of the PUP protocols).
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*
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* Each interface accepts output datagrams of a specified maximum
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* length, and provides higher level routines with input datagrams
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* received from its medium.
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*
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* Output occurs when the routine if_output is called, with three parameters:
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* (*ifp->if_output)(ifp, m, dst, rt)
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* Here m is the mbuf chain to be sent and dst is the destination address.
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* The output routine encapsulates the supplied datagram if necessary,
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* and then transmits it on its medium.
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*
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* On input, each interface unwraps the data received by it, and either
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* places it on the input queue of an internetwork datagram routine
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* and posts the associated software interrupt, or passes the datagram to a raw
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* packet input routine.
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*
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* Routines exist for locating interfaces by their addresses
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* or for locating an interface on a certain network, as well as more general
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* routing and gateway routines maintaining information used to locate
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* interfaces. These routines live in the files if.c and route.c
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*/
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struct rtentry; /* ifa_rtrequest */
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struct rt_addrinfo; /* ifa_rtrequest */
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struct socket;
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struct carp_if;
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struct carp_softc;
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struct ifvlantrunk;
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struct route; /* if_output */
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struct vnet;
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struct ifmedia;
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struct netmap_adapter;
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struct debugnet_methods;
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#ifdef _KERNEL
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#include <sys/_eventhandler.h>
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#include <sys/mbuf.h> /* ifqueue only? */
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#include <sys/buf_ring.h>
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#include <net/vnet.h>
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#endif /* _KERNEL */
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#include <sys/ck.h>
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#include <sys/counter.h>
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#include <sys/epoch.h>
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#include <sys/lock.h> /* XXX */
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#include <sys/mutex.h> /* struct ifqueue */
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#include <sys/rwlock.h> /* XXX */
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#include <sys/sx.h> /* XXX */
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#include <sys/_task.h> /* if_link_task */
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#define IF_DUNIT_NONE -1
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#include <net/altq/if_altq.h>
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CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
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CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */
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CK_STAILQ_HEAD(ifmultihead, ifmultiaddr);
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CK_STAILQ_HEAD(ifgrouphead, ifg_group);
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#ifdef _KERNEL
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VNET_DECLARE(struct pfil_head *, link_pfil_head);
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#define V_link_pfil_head VNET(link_pfil_head)
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#define PFIL_ETHER_NAME "ethernet"
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#define HHOOK_IPSEC_INET 0
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#define HHOOK_IPSEC_INET6 1
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#define HHOOK_IPSEC_COUNT 2
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VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]);
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VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]);
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#define V_ipsec_hhh_in VNET(ipsec_hhh_in)
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#define V_ipsec_hhh_out VNET(ipsec_hhh_out)
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#endif /* _KERNEL */
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typedef enum {
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IFCOUNTER_IPACKETS = 0,
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IFCOUNTER_IERRORS,
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IFCOUNTER_OPACKETS,
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IFCOUNTER_OERRORS,
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IFCOUNTER_COLLISIONS,
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IFCOUNTER_IBYTES,
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IFCOUNTER_OBYTES,
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IFCOUNTER_IMCASTS,
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IFCOUNTER_OMCASTS,
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IFCOUNTER_IQDROPS,
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IFCOUNTER_OQDROPS,
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IFCOUNTER_NOPROTO,
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IFCOUNTERS /* Array size. */
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} ift_counter;
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typedef struct ifnet * if_t;
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typedef void (*if_start_fn_t)(if_t);
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typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t);
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typedef void (*if_init_fn_t)(void *);
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typedef void (*if_qflush_fn_t)(if_t);
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typedef int (*if_transmit_fn_t)(if_t, struct mbuf *);
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typedef uint64_t (*if_get_counter_t)(if_t, ift_counter);
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struct ifnet_hw_tsomax {
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u_int tsomaxbytes; /* TSO total burst length limit in bytes */
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u_int tsomaxsegcount; /* TSO maximum segment count */
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u_int tsomaxsegsize; /* TSO maximum segment size in bytes */
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};
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/* Interface encap request types */
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typedef enum {
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IFENCAP_LL = 1 /* pre-calculate link-layer header */
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} ife_type;
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/*
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* The structure below allows to request various pre-calculated L2/L3 headers
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* for different media. Requests varies by type (rtype field).
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*
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* IFENCAP_LL type: pre-calculates link header based on address family
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* and destination lladdr.
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*
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* Input data fields:
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* buf: pointer to destination buffer
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* bufsize: buffer size
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* flags: IFENCAP_FLAG_BROADCAST if destination is broadcast
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* family: address family defined by AF_ constant.
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* lladdr: pointer to link-layer address
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* lladdr_len: length of link-layer address
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* hdata: pointer to L3 header (optional, used for ARP requests).
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* Output data fields:
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* buf: encap data is stored here
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* bufsize: resulting encap length is stored here
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* lladdr_off: offset of link-layer address from encap hdr start
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* hdata: L3 header may be altered if necessary
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*/
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struct if_encap_req {
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u_char *buf; /* Destination buffer (w) */
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size_t bufsize; /* size of provided buffer (r) */
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ife_type rtype; /* request type (r) */
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uint32_t flags; /* Request flags (r) */
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int family; /* Address family AF_* (r) */
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int lladdr_off; /* offset from header start (w) */
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int lladdr_len; /* lladdr length (r) */
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char *lladdr; /* link-level address pointer (r) */
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char *hdata; /* Upper layer header data (rw) */
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};
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#define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */
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/*
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* Network interface send tag support. The storage of "struct
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* m_snd_tag" comes from the network driver and it is free to allocate
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* as much additional space as it wants for its own use.
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*/
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struct ktls_session;
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struct m_snd_tag;
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#define IF_SND_TAG_TYPE_RATE_LIMIT 0
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#define IF_SND_TAG_TYPE_UNLIMITED 1
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#define IF_SND_TAG_TYPE_TLS 2
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#define IF_SND_TAG_TYPE_MAX 3
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struct if_snd_tag_alloc_header {
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uint32_t type; /* send tag type, see IF_SND_TAG_XXX */
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uint32_t flowid; /* mbuf hash value */
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uint32_t flowtype; /* mbuf hash type */
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};
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struct if_snd_tag_alloc_rate_limit {
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struct if_snd_tag_alloc_header hdr;
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uint64_t max_rate; /* in bytes/s */
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uint32_t flags; /* M_NOWAIT or M_WAITOK */
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uint32_t reserved; /* alignment */
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};
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struct if_snd_tag_alloc_tls {
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struct if_snd_tag_alloc_header hdr;
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struct inpcb *inp;
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const struct ktls_session *tls;
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};
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struct if_snd_tag_rate_limit_params {
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uint64_t max_rate; /* in bytes/s */
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uint32_t queue_level; /* 0 (empty) .. 65535 (full) */
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#define IF_SND_QUEUE_LEVEL_MIN 0
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#define IF_SND_QUEUE_LEVEL_MAX 65535
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uint32_t flags; /* M_NOWAIT or M_WAITOK */
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};
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union if_snd_tag_alloc_params {
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struct if_snd_tag_alloc_header hdr;
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struct if_snd_tag_alloc_rate_limit rate_limit;
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struct if_snd_tag_alloc_rate_limit unlimited;
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struct if_snd_tag_alloc_tls tls;
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};
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union if_snd_tag_modify_params {
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struct if_snd_tag_rate_limit_params rate_limit;
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struct if_snd_tag_rate_limit_params unlimited;
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};
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union if_snd_tag_query_params {
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struct if_snd_tag_rate_limit_params rate_limit;
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struct if_snd_tag_rate_limit_params unlimited;
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};
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/* Query return flags */
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#define RT_NOSUPPORT 0x00000000 /* Not supported */
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#define RT_IS_INDIRECT 0x00000001 /*
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* Interface like a lagg, select
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* the actual interface for
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* capabilities.
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*/
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#define RT_IS_SELECTABLE 0x00000002 /*
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* No rate table, you select
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* rates and the first
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* number_of_rates are created.
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*/
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#define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */
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#define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */
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struct if_ratelimit_query_results {
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const uint64_t *rate_table; /* Pointer to table if present */
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uint32_t flags; /* Flags indicating results */
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uint32_t max_flows; /* Max flows using, 0=unlimited */
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uint32_t number_of_rates; /* How many unique rates can be created */
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uint32_t min_segment_burst; /* The amount the adapter bursts at each send */
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};
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typedef int (if_snd_tag_alloc_t)(struct ifnet *, union if_snd_tag_alloc_params *,
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struct m_snd_tag **);
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typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *);
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typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *);
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typedef void (if_snd_tag_free_t)(struct m_snd_tag *);
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typedef void (if_ratelimit_query_t)(struct ifnet *,
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struct if_ratelimit_query_results *);
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/*
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* Structure defining a network interface.
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*/
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struct ifnet {
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/* General book keeping of interface lists. */
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CK_STAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained (CK_) */
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LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */
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CK_STAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if (CK_) */
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/* protected by if_addr_lock */
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u_char if_alloctype; /* if_type at time of allocation */
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uint8_t if_numa_domain; /* NUMA domain of device */
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/* Driver and protocol specific information that remains stable. */
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void *if_softc; /* pointer to driver state */
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void *if_llsoftc; /* link layer softc */
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void *if_l2com; /* pointer to protocol bits */
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const char *if_dname; /* driver name */
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int if_dunit; /* unit or IF_DUNIT_NONE */
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u_short if_index; /* numeric abbreviation for this if */
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short if_index_reserved; /* spare space to grow if_index */
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char if_xname[IFNAMSIZ]; /* external name (name + unit) */
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char *if_description; /* interface description */
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/* Variable fields that are touched by the stack and drivers. */
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int if_flags; /* up/down, broadcast, etc. */
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int if_drv_flags; /* driver-managed status flags */
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int if_capabilities; /* interface features & capabilities */
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int if_capenable; /* enabled features & capabilities */
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void *if_linkmib; /* link-type-specific MIB data */
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size_t if_linkmiblen; /* length of above data */
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u_int if_refcount; /* reference count */
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/* These fields are shared with struct if_data. */
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uint8_t if_type; /* ethernet, tokenring, etc */
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uint8_t if_addrlen; /* media address length */
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uint8_t if_hdrlen; /* media header length */
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uint8_t if_link_state; /* current link state */
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uint32_t if_mtu; /* maximum transmission unit */
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uint32_t if_metric; /* routing metric (external only) */
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uint64_t if_baudrate; /* linespeed */
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uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */
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time_t if_epoch; /* uptime at attach or stat reset */
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struct timeval if_lastchange; /* time of last administrative change */
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struct ifaltq if_snd; /* output queue (includes altq) */
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struct task if_linktask; /* task for link change events */
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struct task if_addmultitask; /* task for SIOCADDMULTI */
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/* Addresses of different protocol families assigned to this if. */
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struct mtx if_addr_lock; /* lock to protect address lists */
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/*
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* if_addrhead is the list of all addresses associated to
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* an interface.
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* Some code in the kernel assumes that first element
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* of the list has type AF_LINK, and contains sockaddr_dl
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* addresses which store the link-level address and the name
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* of the interface.
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* However, access to the AF_LINK address through this
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* field is deprecated. Use if_addr or ifaddr_byindex() instead.
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*/
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struct ifaddrhead if_addrhead; /* linked list of addresses per if */
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struct ifmultihead if_multiaddrs; /* multicast addresses configured */
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int if_amcount; /* number of all-multicast requests */
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struct ifaddr *if_addr; /* pointer to link-level address */
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void *if_hw_addr; /* hardware link-level address */
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const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
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struct mtx if_afdata_lock;
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void *if_afdata[AF_MAX];
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int if_afdata_initialized;
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/* Additional features hung off the interface. */
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u_int if_fib; /* interface FIB */
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struct vnet *if_vnet; /* pointer to network stack instance */
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struct vnet *if_home_vnet; /* where this ifnet originates from */
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struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */
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struct bpf_if *if_bpf; /* packet filter structure */
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int if_pcount; /* number of promiscuous listeners */
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void *if_bridge; /* bridge glue */
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void *if_lagg; /* lagg glue */
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void *if_pf_kif; /* pf glue */
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struct carp_if *if_carp; /* carp interface structure */
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struct label *if_label; /* interface MAC label */
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struct netmap_adapter *if_netmap; /* netmap(4) softc */
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/* Various procedures of the layer2 encapsulation and drivers. */
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int (*if_output) /* output routine (enqueue) */
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(struct ifnet *, struct mbuf *, const struct sockaddr *,
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struct route *);
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void (*if_input) /* input routine (from h/w driver) */
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(struct ifnet *, struct mbuf *);
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struct mbuf *(*if_bridge_input)(struct ifnet *, struct mbuf *);
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int (*if_bridge_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
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struct rtentry *);
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void (*if_bridge_linkstate)(struct ifnet *ifp);
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if_start_fn_t if_start; /* initiate output routine */
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if_ioctl_fn_t if_ioctl; /* ioctl routine */
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if_init_fn_t if_init; /* Init routine */
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int (*if_resolvemulti) /* validate/resolve multicast */
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(struct ifnet *, struct sockaddr **, struct sockaddr *);
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if_qflush_fn_t if_qflush; /* flush any queue */
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if_transmit_fn_t if_transmit; /* initiate output routine */
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void (*if_reassign) /* reassign to vnet routine */
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(struct ifnet *, struct vnet *, char *);
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if_get_counter_t if_get_counter; /* get counter values */
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int (*if_requestencap) /* make link header from request */
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(struct ifnet *, struct if_encap_req *);
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/* Statistics. */
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counter_u64_t if_counters[IFCOUNTERS];
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/* Stuff that's only temporary and doesn't belong here. */
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/*
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* Network adapter TSO limits:
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* ===========================
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*
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* If the "if_hw_tsomax" field is zero the maximum segment
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* length limit does not apply. If the "if_hw_tsomaxsegcount"
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* or the "if_hw_tsomaxsegsize" field is zero the TSO segment
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* count limit does not apply. If all three fields are zero,
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* there is no TSO limit.
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*
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* NOTE: The TSO limits should reflect the values used in the
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* BUSDMA tag a network adapter is using to load a mbuf chain
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* for transmission. The TCP/IP network stack will subtract
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* space for all linklevel and protocol level headers and
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* ensure that the full mbuf chain passed to the network
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* adapter fits within the given limits.
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*/
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u_int if_hw_tsomax; /* TSO maximum size in bytes */
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u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */
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u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */
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/*
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* Network adapter send tag support:
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*/
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if_snd_tag_alloc_t *if_snd_tag_alloc;
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if_snd_tag_modify_t *if_snd_tag_modify;
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if_snd_tag_query_t *if_snd_tag_query;
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if_snd_tag_free_t *if_snd_tag_free;
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if_ratelimit_query_t *if_ratelimit_query;
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/* Ethernet PCP */
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uint8_t if_pcp;
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/*
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* Debugnet (Netdump) hooks to be called while in db/panic.
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*/
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struct debugnet_methods *if_debugnet_methods;
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struct epoch_context if_epoch_ctx;
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/*
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* Spare fields to be added before branching a stable branch, so
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* that structure can be enhanced without changing the kernel
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* binary interface.
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*/
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int if_ispare[4]; /* general use */
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};
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/* for compatibility with other BSDs */
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#define if_name(ifp) ((ifp)->if_xname)
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#define IF_NODOM 255
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/*
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* Locks for address lists on the network interface.
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*/
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#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF)
|
|
#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock)
|
|
|
|
#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock)
|
|
#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock)
|
|
#define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock))
|
|
#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED)
|
|
|
|
#ifdef _KERNEL
|
|
/* interface link layer address change event */
|
|
typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *);
|
|
EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t);
|
|
/* interface address change event */
|
|
typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *);
|
|
EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t);
|
|
typedef void (*ifaddr_event_ext_handler_t)(void *, struct ifnet *,
|
|
struct ifaddr *, int);
|
|
EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t);
|
|
#define IFADDR_EVENT_ADD 0
|
|
#define IFADDR_EVENT_DEL 1
|
|
/* new interface arrival event */
|
|
typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *);
|
|
EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t);
|
|
/* interface departure event */
|
|
typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *);
|
|
EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t);
|
|
/* Interface link state change event */
|
|
typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int);
|
|
EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t);
|
|
/* Interface up/down event */
|
|
#define IFNET_EVENT_UP 0
|
|
#define IFNET_EVENT_DOWN 1
|
|
#define IFNET_EVENT_PCP 2 /* priority code point, PCP */
|
|
|
|
typedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event);
|
|
EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn);
|
|
|
|
/*
|
|
* interface groups
|
|
*/
|
|
struct ifg_group {
|
|
char ifg_group[IFNAMSIZ];
|
|
u_int ifg_refcnt;
|
|
void *ifg_pf_kif;
|
|
CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */
|
|
CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */
|
|
};
|
|
|
|
struct ifg_member {
|
|
CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */
|
|
struct ifnet *ifgm_ifp;
|
|
};
|
|
|
|
struct ifg_list {
|
|
struct ifg_group *ifgl_group;
|
|
CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */
|
|
};
|
|
|
|
#ifdef _SYS_EVENTHANDLER_H_
|
|
/* group attach event */
|
|
typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *);
|
|
EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t);
|
|
/* group detach event */
|
|
typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *);
|
|
EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t);
|
|
/* group change event */
|
|
typedef void (*group_change_event_handler_t)(void *, const char *);
|
|
EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t);
|
|
#endif /* _SYS_EVENTHANDLER_H_ */
|
|
|
|
#define IF_AFDATA_LOCK_INIT(ifp) \
|
|
mtx_init(&(ifp)->if_afdata_lock, "if_afdata", NULL, MTX_DEF)
|
|
|
|
#define IF_AFDATA_WLOCK(ifp) mtx_lock(&(ifp)->if_afdata_lock)
|
|
#define IF_AFDATA_WUNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_lock)
|
|
#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp)
|
|
#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp)
|
|
#define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_lock)
|
|
#define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_lock)
|
|
|
|
#define IF_AFDATA_LOCK_ASSERT(ifp) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(ifp)->if_afdata_lock))
|
|
#define IF_AFDATA_WLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_OWNED)
|
|
#define IF_AFDATA_UNLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_NOTOWNED)
|
|
|
|
/*
|
|
* 72 was chosen below because it is the size of a TCP/IP
|
|
* header (40) + the minimum mss (32).
|
|
*/
|
|
#define IF_MINMTU 72
|
|
#define IF_MAXMTU 65535
|
|
|
|
#define TOEDEV(ifp) ((ifp)->if_llsoftc)
|
|
|
|
/*
|
|
* The ifaddr structure contains information about one address
|
|
* of an interface. They are maintained by the different address families,
|
|
* are allocated and attached when an address is set, and are linked
|
|
* together so all addresses for an interface can be located.
|
|
*
|
|
* NOTE: a 'struct ifaddr' is always at the beginning of a larger
|
|
* chunk of malloc'ed memory, where we store the three addresses
|
|
* (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here.
|
|
*/
|
|
struct ifaddr {
|
|
struct sockaddr *ifa_addr; /* address of interface */
|
|
struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
|
|
#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
|
|
struct sockaddr *ifa_netmask; /* used to determine subnet */
|
|
struct ifnet *ifa_ifp; /* back-pointer to interface */
|
|
struct carp_softc *ifa_carp; /* pointer to CARP data */
|
|
CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */
|
|
void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
|
|
(int, struct rtentry *, struct rt_addrinfo *);
|
|
u_short ifa_flags; /* mostly rt_flags for cloning */
|
|
#define IFA_ROUTE RTF_UP /* route installed */
|
|
#define IFA_RTSELF RTF_HOST /* loopback route to self installed */
|
|
u_int ifa_refcnt; /* references to this structure */
|
|
|
|
counter_u64_t ifa_ipackets;
|
|
counter_u64_t ifa_opackets;
|
|
counter_u64_t ifa_ibytes;
|
|
counter_u64_t ifa_obytes;
|
|
struct epoch_context ifa_epoch_ctx;
|
|
};
|
|
|
|
struct ifaddr * ifa_alloc(size_t size, int flags);
|
|
void ifa_free(struct ifaddr *ifa);
|
|
void ifa_ref(struct ifaddr *ifa);
|
|
|
|
/*
|
|
* Multicast address structure. This is analogous to the ifaddr
|
|
* structure except that it keeps track of multicast addresses.
|
|
*/
|
|
#define IFMA_F_ENQUEUED 0x1
|
|
struct ifmultiaddr {
|
|
CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
|
|
struct sockaddr *ifma_addr; /* address this membership is for */
|
|
struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
|
|
struct ifnet *ifma_ifp; /* back-pointer to interface */
|
|
u_int ifma_refcount; /* reference count */
|
|
int ifma_flags;
|
|
void *ifma_protospec; /* protocol-specific state, if any */
|
|
struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */
|
|
struct epoch_context ifma_epoch_ctx;
|
|
};
|
|
|
|
extern struct rwlock ifnet_rwlock;
|
|
extern struct sx ifnet_sxlock;
|
|
|
|
#define IFNET_WLOCK() do { \
|
|
sx_xlock(&ifnet_sxlock); \
|
|
rw_wlock(&ifnet_rwlock); \
|
|
} while (0)
|
|
|
|
#define IFNET_WUNLOCK() do { \
|
|
rw_wunlock(&ifnet_rwlock); \
|
|
sx_xunlock(&ifnet_sxlock); \
|
|
} while (0)
|
|
|
|
/*
|
|
* To assert the ifnet lock, you must know not only whether it's for read or
|
|
* write, but also whether it was acquired with sleep support or not.
|
|
*/
|
|
#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED)
|
|
#define IFNET_WLOCK_ASSERT() do { \
|
|
sx_assert(&ifnet_sxlock, SA_XLOCKED); \
|
|
rw_assert(&ifnet_rwlock, RA_WLOCKED); \
|
|
} while (0)
|
|
|
|
#define IFNET_RLOCK() sx_slock(&ifnet_sxlock)
|
|
#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock)
|
|
|
|
/*
|
|
* Look up an ifnet given its index; the _ref variant also acquires a
|
|
* reference that must be freed using if_rele(). It is almost always a bug
|
|
* to call ifnet_byindex() instead of ifnet_byindex_ref().
|
|
*/
|
|
struct ifnet *ifnet_byindex(u_short idx);
|
|
struct ifnet *ifnet_byindex_ref(u_short idx);
|
|
|
|
/*
|
|
* Given the index, ifaddr_byindex() returns the one and only
|
|
* link-level ifaddr for the interface. You are not supposed to use
|
|
* it to traverse the list of addresses associated to the interface.
|
|
*/
|
|
struct ifaddr *ifaddr_byindex(u_short idx);
|
|
|
|
VNET_DECLARE(struct ifnethead, ifnet);
|
|
VNET_DECLARE(struct ifgrouphead, ifg_head);
|
|
VNET_DECLARE(int, if_index);
|
|
VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */
|
|
|
|
#define V_ifnet VNET(ifnet)
|
|
#define V_ifg_head VNET(ifg_head)
|
|
#define V_if_index VNET(if_index)
|
|
#define V_loif VNET(loif)
|
|
|
|
#ifdef MCAST_VERBOSE
|
|
#define MCDPRINTF printf
|
|
#else
|
|
#define MCDPRINTF(...)
|
|
#endif
|
|
|
|
int if_addgroup(struct ifnet *, const char *);
|
|
int if_delgroup(struct ifnet *, const char *);
|
|
int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
|
|
int if_allmulti(struct ifnet *, int);
|
|
struct ifnet* if_alloc(u_char);
|
|
struct ifnet* if_alloc_dev(u_char, device_t dev);
|
|
struct ifnet* if_alloc_domain(u_char, int numa_domain);
|
|
void if_attach(struct ifnet *);
|
|
void if_dead(struct ifnet *);
|
|
int if_delmulti(struct ifnet *, struct sockaddr *);
|
|
void if_delmulti_ifma(struct ifmultiaddr *);
|
|
void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags);
|
|
void if_detach(struct ifnet *);
|
|
void if_purgeaddrs(struct ifnet *);
|
|
void if_delallmulti(struct ifnet *);
|
|
void if_down(struct ifnet *);
|
|
struct ifmultiaddr *
|
|
if_findmulti(struct ifnet *, const struct sockaddr *);
|
|
void if_freemulti(struct ifmultiaddr *ifma);
|
|
void if_free(struct ifnet *);
|
|
void if_initname(struct ifnet *, const char *, int);
|
|
void if_link_state_change(struct ifnet *, int);
|
|
int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3);
|
|
void if_ref(struct ifnet *);
|
|
void if_rele(struct ifnet *);
|
|
int if_setlladdr(struct ifnet *, const u_char *, int);
|
|
int if_tunnel_check_nesting(struct ifnet *, struct mbuf *, uint32_t, int);
|
|
void if_up(struct ifnet *);
|
|
int ifioctl(struct socket *, u_long, caddr_t, struct thread *);
|
|
int ifpromisc(struct ifnet *, int);
|
|
struct ifnet *ifunit(const char *);
|
|
struct ifnet *ifunit_ref(const char *);
|
|
|
|
int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *);
|
|
int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *);
|
|
int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *);
|
|
|
|
struct ifaddr *ifa_ifwithaddr(const struct sockaddr *);
|
|
int ifa_ifwithaddr_check(const struct sockaddr *);
|
|
struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int);
|
|
struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int);
|
|
struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int);
|
|
struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, struct sockaddr *,
|
|
u_int);
|
|
struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
|
|
int ifa_preferred(struct ifaddr *, struct ifaddr *);
|
|
|
|
int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
|
|
|
|
typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp);
|
|
typedef void if_com_free_t(void *com, u_char type);
|
|
void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f);
|
|
void if_deregister_com_alloc(u_char type);
|
|
void if_data_copy(struct ifnet *, struct if_data *);
|
|
uint64_t if_get_counter_default(struct ifnet *, ift_counter);
|
|
void if_inc_counter(struct ifnet *, ift_counter, int64_t);
|
|
|
|
#define IF_LLADDR(ifp) \
|
|
LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr))
|
|
|
|
uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate);
|
|
uint64_t if_getbaudrate(if_t ifp);
|
|
int if_setcapabilities(if_t ifp, int capabilities);
|
|
int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit);
|
|
int if_getcapabilities(if_t ifp);
|
|
int if_togglecapenable(if_t ifp, int togglecap);
|
|
int if_setcapenable(if_t ifp, int capenable);
|
|
int if_setcapenablebit(if_t ifp, int setcap, int clearcap);
|
|
int if_getcapenable(if_t ifp);
|
|
const char *if_getdname(if_t ifp);
|
|
int if_setdev(if_t ifp, void *dev);
|
|
int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags);
|
|
int if_getdrvflags(if_t ifp);
|
|
int if_setdrvflags(if_t ifp, int flags);
|
|
int if_clearhwassist(if_t ifp);
|
|
int if_sethwassistbits(if_t ifp, int toset, int toclear);
|
|
int if_sethwassist(if_t ifp, int hwassist_bit);
|
|
int if_gethwassist(if_t ifp);
|
|
int if_setsoftc(if_t ifp, void *softc);
|
|
void *if_getsoftc(if_t ifp);
|
|
int if_setflags(if_t ifp, int flags);
|
|
int if_gethwaddr(if_t ifp, struct ifreq *);
|
|
int if_setmtu(if_t ifp, int mtu);
|
|
int if_getmtu(if_t ifp);
|
|
int if_getmtu_family(if_t ifp, int family);
|
|
int if_setflagbits(if_t ifp, int set, int clear);
|
|
int if_getflags(if_t ifp);
|
|
int if_sendq_empty(if_t ifp);
|
|
int if_setsendqready(if_t ifp);
|
|
int if_setsendqlen(if_t ifp, int tx_desc_count);
|
|
int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax);
|
|
int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount);
|
|
int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize);
|
|
u_int if_gethwtsomax(if_t ifp);
|
|
u_int if_gethwtsomaxsegcount(if_t ifp);
|
|
u_int if_gethwtsomaxsegsize(if_t ifp);
|
|
int if_input(if_t ifp, struct mbuf* sendmp);
|
|
int if_sendq_prepend(if_t ifp, struct mbuf *m);
|
|
struct mbuf *if_dequeue(if_t ifp);
|
|
int if_setifheaderlen(if_t ifp, int len);
|
|
void if_setrcvif(struct mbuf *m, if_t ifp);
|
|
void if_setvtag(struct mbuf *m, u_int16_t tag);
|
|
u_int16_t if_getvtag(struct mbuf *m);
|
|
int if_vlantrunkinuse(if_t ifp);
|
|
caddr_t if_getlladdr(if_t ifp);
|
|
void *if_gethandle(u_char);
|
|
void if_bpfmtap(if_t ifp, struct mbuf *m);
|
|
void if_etherbpfmtap(if_t ifp, struct mbuf *m);
|
|
void if_vlancap(if_t ifp);
|
|
|
|
/*
|
|
* Traversing through interface address lists.
|
|
*/
|
|
struct sockaddr_dl;
|
|
typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int);
|
|
u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *);
|
|
u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *);
|
|
u_int if_lladdr_count(if_t);
|
|
u_int if_llmaddr_count(if_t);
|
|
|
|
int if_getamcount(if_t ifp);
|
|
struct ifaddr * if_getifaddr(if_t ifp);
|
|
|
|
/* Functions */
|
|
void if_setinitfn(if_t ifp, void (*)(void *));
|
|
void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t));
|
|
void if_setstartfn(if_t ifp, void (*)(if_t));
|
|
void if_settransmitfn(if_t ifp, if_transmit_fn_t);
|
|
void if_setqflushfn(if_t ifp, if_qflush_fn_t);
|
|
void if_setgetcounterfn(if_t ifp, if_get_counter_t);
|
|
|
|
/* Revisit the below. These are inline functions originally */
|
|
int drbr_inuse_drv(if_t ifp, struct buf_ring *br);
|
|
struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br);
|
|
int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br);
|
|
int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m);
|
|
|
|
/* TSO */
|
|
void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *);
|
|
int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *);
|
|
|
|
/* accessors for struct ifreq */
|
|
void *ifr_data_get_ptr(void *ifrp);
|
|
|
|
int ifhwioctl(u_long, struct ifnet *, caddr_t, struct thread *);
|
|
|
|
#ifdef DEVICE_POLLING
|
|
enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS };
|
|
|
|
typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count);
|
|
int ether_poll_register(poll_handler_t *h, if_t ifp);
|
|
int ether_poll_deregister(if_t ifp);
|
|
#endif /* DEVICE_POLLING */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#include <net/ifq.h> /* XXXAO: temporary unconditional include */
|
|
|
|
#endif /* !_NET_IF_VAR_H_ */
|