d862b165a6
if_bridge receives packets via a special interface, if_bridge_input, rather than by if_input. Thus, netmap's usual hooking of ifnet routines does not work as expected. Instead, modify bridge_input() to pass packets directly to netmap when it is enabled. This applies to both locally delivered packets and forwarded packets. When a netmap application transmits a packet by writing it to the host TX ring, the mbuf chain is passed to if_input, which ordinarily points to ether_input(). However, when transmitting via if_bridge, bridge_input() needs to see the packet again in order to decide whether to deliver or forward. Thus, introduce a new protocol flag, M_BRIDGE_INJECT, which 1) causes the packet to be passed to bridge_input() again after Ethernet processing, and 2) avoids passing the packet back to netmap. The source MAC address of the packet is used to determine the original "receiving" interface. Reviewed by: vmaffione MFC after: 2 months Sponsored by: Zenarmor Sponsored by: OPNsense Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D38066
327 lines
12 KiB
C
327 lines
12 KiB
C
/* $NetBSD: if_bridgevar.h,v 1.4 2003/07/08 07:13:50 itojun Exp $ */
|
|
|
|
/*
|
|
* SPDX-License-Identifier: BSD-4-Clause
|
|
*
|
|
* Copyright 2001 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net)
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Jason L. Wright
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* OpenBSD: if_bridge.h,v 1.14 2001/03/22 03:48:29 jason Exp
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Data structure and control definitions for bridge interfaces.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/condvar.h>
|
|
|
|
#include <net/ethernet.h>
|
|
#include <net/if.h>
|
|
|
|
/*
|
|
* Commands used in the SIOCSDRVSPEC ioctl. Note the lookup of the
|
|
* bridge interface itself is keyed off the ifdrv structure.
|
|
*/
|
|
#define BRDGADD 0 /* add bridge member (ifbreq) */
|
|
#define BRDGDEL 1 /* delete bridge member (ifbreq) */
|
|
#define BRDGGIFFLGS 2 /* get member if flags (ifbreq) */
|
|
#define BRDGSIFFLGS 3 /* set member if flags (ifbreq) */
|
|
#define BRDGSCACHE 4 /* set cache size (ifbrparam) */
|
|
#define BRDGGCACHE 5 /* get cache size (ifbrparam) */
|
|
#define BRDGGIFS 6 /* get member list (ifbifconf) */
|
|
#define BRDGRTS 7 /* get address list (ifbaconf) */
|
|
#define BRDGSADDR 8 /* set static address (ifbareq) */
|
|
#define BRDGSTO 9 /* set cache timeout (ifbrparam) */
|
|
#define BRDGGTO 10 /* get cache timeout (ifbrparam) */
|
|
#define BRDGDADDR 11 /* delete address (ifbareq) */
|
|
#define BRDGFLUSH 12 /* flush address cache (ifbreq) */
|
|
|
|
#define BRDGGPRI 13 /* get priority (ifbrparam) */
|
|
#define BRDGSPRI 14 /* set priority (ifbrparam) */
|
|
#define BRDGGHT 15 /* get hello time (ifbrparam) */
|
|
#define BRDGSHT 16 /* set hello time (ifbrparam) */
|
|
#define BRDGGFD 17 /* get forward delay (ifbrparam) */
|
|
#define BRDGSFD 18 /* set forward delay (ifbrparam) */
|
|
#define BRDGGMA 19 /* get max age (ifbrparam) */
|
|
#define BRDGSMA 20 /* set max age (ifbrparam) */
|
|
#define BRDGSIFPRIO 21 /* set if priority (ifbreq) */
|
|
#define BRDGSIFCOST 22 /* set if path cost (ifbreq) */
|
|
#define BRDGADDS 23 /* add bridge span member (ifbreq) */
|
|
#define BRDGDELS 24 /* delete bridge span member (ifbreq) */
|
|
#define BRDGPARAM 25 /* get bridge STP params (ifbropreq) */
|
|
#define BRDGGRTE 26 /* get cache drops (ifbrparam) */
|
|
#define BRDGGIFSSTP 27 /* get member STP params list
|
|
* (ifbpstpconf) */
|
|
#define BRDGSPROTO 28 /* set protocol (ifbrparam) */
|
|
#define BRDGSTXHC 29 /* set tx hold count (ifbrparam) */
|
|
#define BRDGSIFAMAX 30 /* set max interface addrs (ifbreq) */
|
|
|
|
/*
|
|
* Generic bridge control request.
|
|
*/
|
|
struct ifbreq {
|
|
char ifbr_ifsname[IFNAMSIZ]; /* member if name */
|
|
uint32_t ifbr_ifsflags; /* member if flags */
|
|
uint32_t ifbr_stpflags; /* member if STP flags */
|
|
uint32_t ifbr_path_cost; /* member if STP cost */
|
|
uint8_t ifbr_portno; /* member if port number */
|
|
uint8_t ifbr_priority; /* member if STP priority */
|
|
uint8_t ifbr_proto; /* member if STP protocol */
|
|
uint8_t ifbr_role; /* member if STP role */
|
|
uint8_t ifbr_state; /* member if STP state */
|
|
uint32_t ifbr_addrcnt; /* member if addr number */
|
|
uint32_t ifbr_addrmax; /* member if addr max */
|
|
uint32_t ifbr_addrexceeded; /* member if addr violations */
|
|
uint8_t pad[32];
|
|
};
|
|
|
|
/* BRDGGIFFLAGS, BRDGSIFFLAGS */
|
|
#define IFBIF_LEARNING 0x0001 /* if can learn */
|
|
#define IFBIF_DISCOVER 0x0002 /* if sends packets w/ unknown dest. */
|
|
#define IFBIF_STP 0x0004 /* if participates in spanning tree */
|
|
#define IFBIF_SPAN 0x0008 /* if is a span port */
|
|
#define IFBIF_STICKY 0x0010 /* if learned addresses stick */
|
|
#define IFBIF_BSTP_EDGE 0x0020 /* member stp edge port */
|
|
#define IFBIF_BSTP_AUTOEDGE 0x0040 /* member stp autoedge enabled */
|
|
#define IFBIF_BSTP_PTP 0x0080 /* member stp point to point */
|
|
#define IFBIF_BSTP_AUTOPTP 0x0100 /* member stp autoptp enabled */
|
|
#define IFBIF_BSTP_ADMEDGE 0x0200 /* member stp admin edge enabled */
|
|
#define IFBIF_BSTP_ADMCOST 0x0400 /* member stp admin path cost */
|
|
#define IFBIF_PRIVATE 0x0800 /* if is a private segment */
|
|
|
|
#define IFBIFBITS "\020\001LEARNING\002DISCOVER\003STP\004SPAN" \
|
|
"\005STICKY\014PRIVATE\006EDGE\007AUTOEDGE\010PTP" \
|
|
"\011AUTOPTP"
|
|
#define IFBIFMASK ~(IFBIF_BSTP_EDGE|IFBIF_BSTP_AUTOEDGE|IFBIF_BSTP_PTP| \
|
|
IFBIF_BSTP_AUTOPTP|IFBIF_BSTP_ADMEDGE| \
|
|
IFBIF_BSTP_ADMCOST) /* not saved */
|
|
|
|
/* BRDGFLUSH */
|
|
#define IFBF_FLUSHDYN 0x00 /* flush learned addresses only */
|
|
#define IFBF_FLUSHALL 0x01 /* flush all addresses */
|
|
|
|
/*
|
|
* Interface list structure.
|
|
*/
|
|
struct ifbifconf {
|
|
uint32_t ifbic_len; /* buffer size */
|
|
union {
|
|
caddr_t ifbicu_buf;
|
|
struct ifbreq *ifbicu_req;
|
|
} ifbic_ifbicu;
|
|
#define ifbic_buf ifbic_ifbicu.ifbicu_buf
|
|
#define ifbic_req ifbic_ifbicu.ifbicu_req
|
|
};
|
|
|
|
/*
|
|
* Bridge address request.
|
|
*/
|
|
struct ifbareq {
|
|
char ifba_ifsname[IFNAMSIZ]; /* member if name */
|
|
unsigned long ifba_expire; /* address expire time */
|
|
uint8_t ifba_flags; /* address flags */
|
|
uint8_t ifba_dst[ETHER_ADDR_LEN];/* destination address */
|
|
uint16_t ifba_vlan; /* vlan id */
|
|
};
|
|
|
|
#define IFBAF_TYPEMASK 0x03 /* address type mask */
|
|
#define IFBAF_DYNAMIC 0x00 /* dynamically learned address */
|
|
#define IFBAF_STATIC 0x01 /* static address */
|
|
#define IFBAF_STICKY 0x02 /* sticky address */
|
|
|
|
#define IFBAFBITS "\020\1STATIC\2STICKY"
|
|
|
|
/*
|
|
* Address list structure.
|
|
*/
|
|
struct ifbaconf {
|
|
uint32_t ifbac_len; /* buffer size */
|
|
union {
|
|
caddr_t ifbacu_buf;
|
|
struct ifbareq *ifbacu_req;
|
|
} ifbac_ifbacu;
|
|
#define ifbac_buf ifbac_ifbacu.ifbacu_buf
|
|
#define ifbac_req ifbac_ifbacu.ifbacu_req
|
|
};
|
|
|
|
/*
|
|
* Bridge parameter structure.
|
|
*/
|
|
struct ifbrparam {
|
|
union {
|
|
uint32_t ifbrpu_int32;
|
|
uint16_t ifbrpu_int16;
|
|
uint8_t ifbrpu_int8;
|
|
} ifbrp_ifbrpu;
|
|
};
|
|
#define ifbrp_csize ifbrp_ifbrpu.ifbrpu_int32 /* cache size */
|
|
#define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_int32 /* cache time (sec) */
|
|
#define ifbrp_prio ifbrp_ifbrpu.ifbrpu_int16 /* bridge priority */
|
|
#define ifbrp_proto ifbrp_ifbrpu.ifbrpu_int8 /* bridge protocol */
|
|
#define ifbrp_txhc ifbrp_ifbrpu.ifbrpu_int8 /* bpdu tx holdcount */
|
|
#define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_int8 /* hello time (sec) */
|
|
#define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_int8 /* fwd time (sec) */
|
|
#define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_int8 /* max age (sec) */
|
|
#define ifbrp_cexceeded ifbrp_ifbrpu.ifbrpu_int32 /* # of cache dropped
|
|
* adresses */
|
|
/*
|
|
* Bridge current operational parameters structure.
|
|
*/
|
|
struct ifbropreq {
|
|
uint8_t ifbop_holdcount;
|
|
uint8_t ifbop_maxage;
|
|
uint8_t ifbop_hellotime;
|
|
uint8_t ifbop_fwddelay;
|
|
uint8_t ifbop_protocol;
|
|
uint16_t ifbop_priority;
|
|
uint16_t ifbop_root_port;
|
|
uint32_t ifbop_root_path_cost;
|
|
uint64_t ifbop_bridgeid;
|
|
uint64_t ifbop_designated_root;
|
|
uint64_t ifbop_designated_bridge;
|
|
struct timeval ifbop_last_tc_time;
|
|
};
|
|
|
|
/*
|
|
* Bridge member operational STP params structure.
|
|
*/
|
|
struct ifbpstpreq {
|
|
uint8_t ifbp_portno; /* bp STP port number */
|
|
uint32_t ifbp_fwd_trans; /* bp STP fwd transitions */
|
|
uint32_t ifbp_design_cost; /* bp STP designated cost */
|
|
uint32_t ifbp_design_port; /* bp STP designated port */
|
|
uint64_t ifbp_design_bridge; /* bp STP designated bridge */
|
|
uint64_t ifbp_design_root; /* bp STP designated root */
|
|
};
|
|
|
|
/*
|
|
* Bridge STP ports list structure.
|
|
*/
|
|
struct ifbpstpconf {
|
|
uint32_t ifbpstp_len; /* buffer size */
|
|
union {
|
|
caddr_t ifbpstpu_buf;
|
|
struct ifbpstpreq *ifbpstpu_req;
|
|
} ifbpstp_ifbpstpu;
|
|
#define ifbpstp_buf ifbpstp_ifbpstpu.ifbpstpu_buf
|
|
#define ifbpstp_req ifbpstp_ifbpstpu.ifbpstpu_req
|
|
};
|
|
|
|
#define STP_STATES \
|
|
"disabled", \
|
|
"listening", \
|
|
"learning", \
|
|
"forwarding", \
|
|
"blocking", \
|
|
"discarding"
|
|
|
|
#define STP_PROTOS \
|
|
"stp", \
|
|
"-", \
|
|
"rstp"
|
|
|
|
#define STP_ROLES \
|
|
"disabled", \
|
|
"root", \
|
|
"designated", \
|
|
"alternate", \
|
|
"backup"
|
|
|
|
#define PV2ID(pv, epri, eaddr) do { \
|
|
epri = pv >> 48; \
|
|
eaddr[0] = pv >> 40; \
|
|
eaddr[1] = pv >> 32; \
|
|
eaddr[2] = pv >> 24; \
|
|
eaddr[3] = pv >> 16; \
|
|
eaddr[4] = pv >> 8; \
|
|
eaddr[5] = pv >> 0; \
|
|
} while (0)
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#define BRIDGE_INPUT(_ifp, _m) do { \
|
|
KASSERT((_ifp)->if_bridge_input != NULL, \
|
|
("%s: if_bridge not loaded!", __func__)); \
|
|
_m = (*(_ifp)->if_bridge_input)(_ifp, _m); \
|
|
if (_m != NULL) { \
|
|
_ifp = _m->m_pkthdr.rcvif; \
|
|
m->m_flags &= ~M_BRIDGE_INJECT; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define BRIDGE_OUTPUT(_ifp, _m, _err) do { \
|
|
KASSERT((_ifp)->if_bridge_output != NULL, \
|
|
("%s: if_bridge not loaded!", __func__)); \
|
|
_err = (*(_ifp)->if_bridge_output)(_ifp, _m, NULL, NULL); \
|
|
} while (0)
|
|
|
|
extern void (*bridge_dn_p)(struct mbuf *, struct ifnet *);
|
|
|
|
#endif /* _KERNEL */
|