75ee267c22
work by yar, thompsa and myself. The checksum offloading part also involves
work done by Mihail Balikov.
The most important changes:
o Instead of global linked list of all vlan softc use a per-trunk
hash. The size of hash is dynamically adjusted, depending on
number of entries. This changes struct ifnet, replacing counter
of vlans with a pointer to trunk structure. This change is an
improvement for setups with big number of VLANs, several interfaces
and several CPUs. It is a small regression for a setup with a single
VLAN interface.
An alternative to dynamic hash is a per-trunk static array with
4096 entries, which is a compile time option - VLAN_ARRAY. In my
experiments the array is not an improvement, probably because such
a big trunk structure doesn't fit into CPU cache.
o Introduce an UMA zone for VLAN tags. Since drivers depend on it,
the zone is declared in kern_mbuf.c, not in optional vlan(4) driver.
This change is a big improvement for any setup utilizing vlan(4).
o Use rwlock(9) instead of mutex(9) for locking. We are the first
ones to do this! :)
o Some drivers can do hardware VLAN tagging + hardware checksum
offloading. Add an infrastructure for this. Whenever vlan(4) is
attached to a parent or parent configuration is changed, the flags
on vlan(4) interface are updated.
In collaboration with: yar, thompsa
In collaboration with: Mihail Balikov <mihail.balikov interbgc.com>
395 lines
14 KiB
C
395 lines
14 KiB
C
/*-
|
|
* 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.
|
|
* 4. 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.
|
|
*
|
|
* @(#)if.h 8.1 (Berkeley) 6/10/93
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NET_IF_H_
|
|
#define _NET_IF_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/queue.h>
|
|
#endif
|
|
|
|
#if __BSD_VISIBLE
|
|
/*
|
|
* <net/if.h> does not depend on <sys/time.h> on most other systems. This
|
|
* helps userland compatibility. (struct timeval ifi_lastchange)
|
|
*/
|
|
#ifndef _KERNEL
|
|
#include <sys/time.h>
|
|
#endif
|
|
|
|
struct ifnet;
|
|
#endif
|
|
|
|
/*
|
|
* Length of interface external name, including terminating '\0'.
|
|
* Note: this is the same size as a generic device's external name.
|
|
*/
|
|
#define IF_NAMESIZE 16
|
|
#if __BSD_VISIBLE
|
|
#define IFNAMSIZ IF_NAMESIZE
|
|
#define IF_MAXUNIT 0x7fff /* historical value */
|
|
#endif
|
|
#if __BSD_VISIBLE
|
|
|
|
/*
|
|
* Structure used to query names of interface cloners.
|
|
*/
|
|
|
|
struct if_clonereq {
|
|
int ifcr_total; /* total cloners (out) */
|
|
int ifcr_count; /* room for this many in user buffer */
|
|
char *ifcr_buffer; /* buffer for cloner names */
|
|
};
|
|
|
|
/*
|
|
* Structure describing information about an interface
|
|
* which may be of interest to management entities.
|
|
*/
|
|
struct if_data {
|
|
/* generic interface information */
|
|
u_char ifi_type; /* ethernet, tokenring, etc */
|
|
u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
|
|
u_char ifi_addrlen; /* media address length */
|
|
u_char ifi_hdrlen; /* media header length */
|
|
u_char ifi_link_state; /* current link state */
|
|
u_char ifi_recvquota; /* polling quota for receive intrs */
|
|
u_char ifi_xmitquota; /* polling quota for xmit intrs */
|
|
u_char ifi_datalen; /* length of this data struct */
|
|
u_long ifi_mtu; /* maximum transmission unit */
|
|
u_long ifi_metric; /* routing metric (external only) */
|
|
u_long ifi_baudrate; /* linespeed */
|
|
/* volatile statistics */
|
|
u_long ifi_ipackets; /* packets received on interface */
|
|
u_long ifi_ierrors; /* input errors on interface */
|
|
u_long ifi_opackets; /* packets sent on interface */
|
|
u_long ifi_oerrors; /* output errors on interface */
|
|
u_long ifi_collisions; /* collisions on csma interfaces */
|
|
u_long ifi_ibytes; /* total number of octets received */
|
|
u_long ifi_obytes; /* total number of octets sent */
|
|
u_long ifi_imcasts; /* packets received via multicast */
|
|
u_long ifi_omcasts; /* packets sent via multicast */
|
|
u_long ifi_iqdrops; /* dropped on input, this interface */
|
|
u_long ifi_noproto; /* destined for unsupported protocol */
|
|
u_long ifi_hwassist; /* HW offload capabilities */
|
|
time_t ifi_epoch; /* uptime at attach or stat reset */
|
|
#ifdef __alpha__
|
|
u_int ifi_timepad; /* time_t is int, not long on alpha */
|
|
#endif
|
|
struct timeval ifi_lastchange; /* time of last administrative change */
|
|
};
|
|
|
|
/*-
|
|
* Interface flags are of two types: network stack owned flags, and driver
|
|
* owned flags. Historically, these values were stored in the same ifnet
|
|
* flags field, but with the advent of fine-grained locking, they have been
|
|
* broken out such that the network stack is responsible for synchronizing
|
|
* the stack-owned fields, and the device driver the device-owned fields.
|
|
* Both halves can perform lockless reads of the other half's field, subject
|
|
* to accepting the involved races.
|
|
*
|
|
* Both sets of flags come from the same number space, and should not be
|
|
* permitted to conflict, as they are exposed to user space via a single
|
|
* field.
|
|
*
|
|
* The following symbols identify read and write requirements for fields:
|
|
*
|
|
* (i) if_flags field set by device driver before attach, read-only there
|
|
* after.
|
|
* (n) if_flags field written only by the network stack, read by either the
|
|
* stack or driver.
|
|
* (d) if_drv_flags field written only by the device driver, read by either
|
|
* the stack or driver.
|
|
*/
|
|
#define IFF_UP 0x1 /* (n) interface is up */
|
|
#define IFF_BROADCAST 0x2 /* (i) broadcast address valid */
|
|
#define IFF_DEBUG 0x4 /* (n) turn on debugging */
|
|
#define IFF_LOOPBACK 0x8 /* (i) is a loopback net */
|
|
#define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */
|
|
#define IFF_SMART 0x20 /* (i) interface manages own routes */
|
|
#define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */
|
|
#define IFF_NOARP 0x80 /* (n) no address resolution protocol */
|
|
#define IFF_PROMISC 0x100 /* (n) receive all packets */
|
|
#define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */
|
|
#define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */
|
|
#define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */
|
|
#define IFF_LINK0 0x1000 /* per link layer defined bit */
|
|
#define IFF_LINK1 0x2000 /* per link layer defined bit */
|
|
#define IFF_LINK2 0x4000 /* per link layer defined bit */
|
|
#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
|
|
#define IFF_MULTICAST 0x8000 /* (i) supports multicast */
|
|
/* 0x10000 */
|
|
#define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */
|
|
#define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */
|
|
#define IFF_STATICARP 0x80000 /* (n) static ARP */
|
|
#define IFF_NEEDSGIANT 0x100000 /* (i) hold Giant over if_start calls */
|
|
|
|
/*
|
|
* Old names for driver flags so that user space tools can continue to use
|
|
* the old (portable) names.
|
|
*/
|
|
#ifndef _KERNEL
|
|
#define IFF_RUNNING IFF_DRV_RUNNING
|
|
#define IFF_OACTIVE IFF_DRV_OACTIVE
|
|
#endif
|
|
|
|
/* flags set internally only: */
|
|
#define IFF_CANTCHANGE \
|
|
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
|
|
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_PROMISC)
|
|
|
|
/*
|
|
* Values for if_link_state.
|
|
*/
|
|
#define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
|
|
#define LINK_STATE_DOWN 1 /* link is down */
|
|
#define LINK_STATE_UP 2 /* link is up */
|
|
|
|
/*
|
|
* Some convenience macros used for setting ifi_baudrate.
|
|
* XXX 1000 vs. 1024? --thorpej@netbsd.org
|
|
*/
|
|
#define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */
|
|
#define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
|
|
#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
|
|
|
|
/* Capabilities that interfaces can advertise. */
|
|
#define IFCAP_RXCSUM 0x0001 /* can offload checksum on RX */
|
|
#define IFCAP_TXCSUM 0x0002 /* can offload checksum on TX */
|
|
#define IFCAP_NETCONS 0x0004 /* can be a network console */
|
|
#define IFCAP_VLAN_MTU 0x0008 /* VLAN-compatible MTU */
|
|
#define IFCAP_VLAN_HWTAGGING 0x0010 /* hardware VLAN tag support */
|
|
#define IFCAP_JUMBO_MTU 0x0020 /* 9000 byte MTU supported */
|
|
#define IFCAP_POLLING 0x0040 /* driver supports polling */
|
|
#define IFCAP_VLAN_HWCSUM 0x0080 /* can do IFCAP_HWCSUM on VLANs */
|
|
|
|
#define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
|
|
|
|
#define IFQ_MAXLEN 50
|
|
#define IFNET_SLOWHZ 1 /* granularity is 1 second */
|
|
|
|
/*
|
|
* Message format for use in obtaining information about interfaces
|
|
* from getkerninfo and the routing socket
|
|
*/
|
|
struct if_msghdr {
|
|
u_short ifm_msglen; /* to skip over non-understood messages */
|
|
u_char ifm_version; /* future binary compatibility */
|
|
u_char ifm_type; /* message type */
|
|
int ifm_addrs; /* like rtm_addrs */
|
|
int ifm_flags; /* value of if_flags */
|
|
u_short ifm_index; /* index for associated ifp */
|
|
struct if_data ifm_data;/* statistics and other data about if */
|
|
};
|
|
|
|
/*
|
|
* Message format for use in obtaining information about interface addresses
|
|
* from getkerninfo and the routing socket
|
|
*/
|
|
struct ifa_msghdr {
|
|
u_short ifam_msglen; /* to skip over non-understood messages */
|
|
u_char ifam_version; /* future binary compatibility */
|
|
u_char ifam_type; /* message type */
|
|
int ifam_addrs; /* like rtm_addrs */
|
|
int ifam_flags; /* value of ifa_flags */
|
|
u_short ifam_index; /* index for associated ifp */
|
|
int ifam_metric; /* value of ifa_metric */
|
|
};
|
|
|
|
/*
|
|
* Message format for use in obtaining information about multicast addresses
|
|
* from the routing socket
|
|
*/
|
|
struct ifma_msghdr {
|
|
u_short ifmam_msglen; /* to skip over non-understood messages */
|
|
u_char ifmam_version; /* future binary compatibility */
|
|
u_char ifmam_type; /* message type */
|
|
int ifmam_addrs; /* like rtm_addrs */
|
|
int ifmam_flags; /* value of ifa_flags */
|
|
u_short ifmam_index; /* index for associated ifp */
|
|
};
|
|
|
|
/*
|
|
* Message format announcing the arrival or departure of a network interface.
|
|
*/
|
|
struct if_announcemsghdr {
|
|
u_short ifan_msglen; /* to skip over non-understood messages */
|
|
u_char ifan_version; /* future binary compatibility */
|
|
u_char ifan_type; /* message type */
|
|
u_short ifan_index; /* index for associated ifp */
|
|
char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
u_short ifan_what; /* what type of announcement */
|
|
};
|
|
|
|
#define IFAN_ARRIVAL 0 /* interface arrival */
|
|
#define IFAN_DEPARTURE 1 /* interface departure */
|
|
|
|
/*
|
|
* Interface request structure used for socket
|
|
* 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;
|
|
short ifru_flags[2];
|
|
short ifru_index;
|
|
int ifru_metric;
|
|
int ifru_mtu;
|
|
int ifru_phys;
|
|
int ifru_media;
|
|
caddr_t ifru_data;
|
|
int ifru_cap[2];
|
|
} 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_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
|
|
#define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
|
|
#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 _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;
|
|
};
|
|
|
|
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 */
|
|
};
|
|
|
|
|
|
/*
|
|
* Structure for SIOC[AGD]LIFADDR
|
|
*/
|
|
struct if_laddrreq {
|
|
char iflr_name[IFNAMSIZ];
|
|
u_int flags;
|
|
#define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
|
|
u_int prefixlen; /* in/out */
|
|
struct sockaddr_storage addr; /* in/out */
|
|
struct sockaddr_storage dstaddr; /* out */
|
|
};
|
|
|
|
#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
|
|
|
|
#ifdef _KERNEL
|
|
struct thread;
|
|
|
|
/* XXX - this should go away soon. */
|
|
#include <net/if_var.h>
|
|
#endif
|
|
|
|
#endif /* !_NET_IF_H_ */
|