mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-22 11:14:18 +01:00
2131654bde
Reviewed by: glebius Sponsored by: NVIDIA networking Differential revision: https://reviews.freebsd.org/D44314
215 lines
9.0 KiB
C
215 lines
9.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _NET_IF_PRIVATE_H_
|
|
#define _NET_IF_PRIVATE_H_
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* Structure defining a network interface.
|
|
*/
|
|
struct ifnet {
|
|
/* General book keeping of interface lists. */
|
|
CK_STAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained (CK_) */
|
|
LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */
|
|
CK_STAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if (CK_) */
|
|
/* protected by if_addr_lock */
|
|
u_char if_alloctype; /* if_type at time of allocation */
|
|
uint8_t if_numa_domain; /* NUMA domain of device */
|
|
/* Driver and protocol specific information that remains stable. */
|
|
void *if_softc; /* pointer to driver state */
|
|
void *if_llsoftc; /* link layer softc */
|
|
void *if_l2com; /* pointer to protocol bits */
|
|
const char *if_dname; /* driver name */
|
|
int if_dunit; /* unit or IF_DUNIT_NONE */
|
|
u_short if_index; /* numeric abbreviation for this if */
|
|
u_short if_idxgen; /* ... and its generation count */
|
|
char if_xname[IFNAMSIZ]; /* external name (name + unit) */
|
|
char *if_description; /* interface description */
|
|
|
|
/* Variable fields that are touched by the stack and drivers. */
|
|
int if_flags; /* up/down, broadcast, etc. */
|
|
int if_drv_flags; /* driver-managed status flags */
|
|
int if_capabilities; /* interface features & capabilities */
|
|
int if_capabilities2; /* part 2 */
|
|
int if_capenable; /* enabled features & capabilities */
|
|
int if_capenable2; /* part 2 */
|
|
void *if_linkmib; /* link-type-specific MIB data */
|
|
size_t if_linkmiblen; /* length of above data */
|
|
u_int if_refcount; /* reference count */
|
|
|
|
/* These fields are shared with struct if_data. */
|
|
uint8_t if_type; /* ethernet, tokenring, etc */
|
|
uint8_t if_addrlen; /* media address length */
|
|
uint8_t if_hdrlen; /* media header length */
|
|
uint8_t if_link_state; /* current link state */
|
|
uint32_t if_mtu; /* maximum transmission unit */
|
|
uint32_t if_metric; /* routing metric (external only) */
|
|
uint64_t if_baudrate; /* linespeed */
|
|
uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */
|
|
time_t if_epoch; /* uptime at attach or stat reset */
|
|
struct timeval if_lastchange; /* time of last administrative change */
|
|
|
|
struct ifaltq if_snd; /* output queue (includes altq) */
|
|
struct task if_linktask; /* task for link change events */
|
|
struct task if_addmultitask; /* task for SIOCADDMULTI */
|
|
|
|
/* Addresses of different protocol families assigned to this if. */
|
|
struct mtx if_addr_lock; /* lock to protect address lists */
|
|
/*
|
|
* if_addrhead is the list of all addresses associated to
|
|
* an interface.
|
|
* Some code in the kernel assumes that first element
|
|
* of the list has type AF_LINK, and contains sockaddr_dl
|
|
* addresses which store the link-level address and the name
|
|
* of the interface.
|
|
* However, access to the AF_LINK address through this
|
|
* field is deprecated. Use if_addr instead.
|
|
*/
|
|
struct ifaddrhead if_addrhead; /* linked list of addresses per if */
|
|
struct ifmultihead if_multiaddrs; /* multicast addresses configured */
|
|
int if_amcount; /* number of all-multicast requests */
|
|
struct ifaddr *if_addr; /* pointer to link-level address */
|
|
void *if_hw_addr; /* hardware link-level address */
|
|
const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
|
|
struct mtx if_afdata_lock;
|
|
void *if_afdata[AF_MAX];
|
|
int if_afdata_initialized;
|
|
|
|
/* Additional features hung off the interface. */
|
|
u_int if_fib; /* interface FIB */
|
|
struct vnet *if_vnet; /* pointer to network stack instance */
|
|
struct vnet *if_home_vnet; /* where this ifnet originates from */
|
|
struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */
|
|
struct bpf_if *if_bpf; /* packet filter structure */
|
|
int if_pcount; /* number of promiscuous listeners */
|
|
void *if_bridge; /* bridge glue */
|
|
void *if_lagg; /* lagg glue */
|
|
void *if_pf_kif; /* pf glue */
|
|
struct carp_if *if_carp; /* carp interface structure */
|
|
struct label *if_label; /* interface MAC label */
|
|
struct netmap_adapter *if_netmap; /* netmap(4) softc */
|
|
|
|
/* Various procedures of the layer2 encapsulation and drivers. */
|
|
if_output_fn_t if_output; /* output routine (enqueue) */
|
|
if_input_fn_t if_input; /* input routine (from h/w driver) */
|
|
struct mbuf *(*if_bridge_input)(struct ifnet *, struct mbuf *);
|
|
int (*if_bridge_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
|
|
struct rtentry *);
|
|
void (*if_bridge_linkstate)(struct ifnet *ifp);
|
|
if_start_fn_t if_start; /* initiate output routine */
|
|
if_ioctl_fn_t if_ioctl; /* ioctl routine */
|
|
if_init_fn_t if_init; /* Init routine */
|
|
int (*if_resolvemulti) /* validate/resolve multicast */
|
|
(struct ifnet *, struct sockaddr **, struct sockaddr *);
|
|
if_qflush_fn_t if_qflush; /* flush any queue */
|
|
if_transmit_fn_t if_transmit; /* initiate output routine */
|
|
|
|
if_reassign_fn_t if_reassign; /* reassign to vnet routine */
|
|
if_get_counter_t if_get_counter; /* get counter values */
|
|
int (*if_requestencap) /* make link header from request */
|
|
(struct ifnet *, struct if_encap_req *);
|
|
|
|
const struct if_ipsec_accel_methods *if_ipsec_accel_m;
|
|
|
|
/* Statistics. */
|
|
counter_u64_t if_counters[IFCOUNTERS];
|
|
|
|
/* Stuff that's only temporary and doesn't belong here. */
|
|
|
|
/*
|
|
* Network adapter TSO limits:
|
|
* ===========================
|
|
*
|
|
* If the "if_hw_tsomax" field is zero the maximum segment
|
|
* length limit does not apply. If the "if_hw_tsomaxsegcount"
|
|
* or the "if_hw_tsomaxsegsize" field is zero the TSO segment
|
|
* count limit does not apply. If all three fields are zero,
|
|
* there is no TSO limit.
|
|
*
|
|
* NOTE: The TSO limits should reflect the values used in the
|
|
* BUSDMA tag a network adapter is using to load a mbuf chain
|
|
* for transmission. The TCP/IP network stack will subtract
|
|
* space for all linklevel and protocol level headers and
|
|
* ensure that the full mbuf chain passed to the network
|
|
* adapter fits within the given limits.
|
|
*/
|
|
u_int if_hw_tsomax; /* TSO maximum size in bytes */
|
|
u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */
|
|
u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */
|
|
|
|
/*
|
|
* Network adapter send tag support:
|
|
*/
|
|
if_snd_tag_alloc_t *if_snd_tag_alloc;
|
|
|
|
/* Ratelimit (packet pacing) */
|
|
if_ratelimit_query_t *if_ratelimit_query;
|
|
if_ratelimit_setup_t *if_ratelimit_setup;
|
|
|
|
/* Ethernet PCP */
|
|
uint8_t if_pcp;
|
|
|
|
/*
|
|
* Debugnet (Netdump) hooks to be called while in db/panic.
|
|
*/
|
|
struct debugnet_methods *if_debugnet_methods;
|
|
struct epoch_context if_epoch_ctx;
|
|
|
|
/*
|
|
* Spare fields to be added before branching a stable branch, so
|
|
* that structure can be enhanced without changing the kernel
|
|
* binary interface.
|
|
*/
|
|
int if_ispare[4]; /* general use */
|
|
};
|
|
|
|
#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)
|
|
|
|
#define IF_LLADDR(ifp) \
|
|
LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr))
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NET_IF_PRIVATE_H_ */
|