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head/sys/dev/netmap/netmap_bdg.h
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (C) 2013-2018 Universita` di Pisa | |||||
| * 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef _NET_NETMAP_BDG_H_ | |||||
| #define _NET_NETMAP_BDG_H_ | |||||
| #if defined(__FreeBSD__) | |||||
| #define BDG_RWLOCK_T struct rwlock // struct rwlock | |||||
| #define BDG_RWINIT(b) \ | |||||
| rw_init_flags(&(b)->bdg_lock, "bdg lock", RW_NOWITNESS) | |||||
| #define BDG_WLOCK(b) rw_wlock(&(b)->bdg_lock) | |||||
| #define BDG_WUNLOCK(b) rw_wunlock(&(b)->bdg_lock) | |||||
| #define BDG_RLOCK(b) rw_rlock(&(b)->bdg_lock) | |||||
| #define BDG_RTRYLOCK(b) rw_try_rlock(&(b)->bdg_lock) | |||||
| #define BDG_RUNLOCK(b) rw_runlock(&(b)->bdg_lock) | |||||
| #define BDG_RWDESTROY(b) rw_destroy(&(b)->bdg_lock) | |||||
| #endif /* __FreeBSD__ */ | |||||
| /* XXX Should go away after fixing find_bridge() - Michio */ | |||||
| #define NM_BDG_HASH 1024 /* forwarding table entries */ | |||||
| /* XXX revise this */ | |||||
| struct nm_hash_ent { | |||||
| uint64_t mac; /* the top 2 bytes are the epoch */ | |||||
| uint64_t ports; | |||||
| }; | |||||
| /* Default size for the Maximum Frame Size. */ | |||||
| #define NM_BDG_MFS_DEFAULT 1514 | |||||
| /* | |||||
| * nm_bridge is a descriptor for a VALE switch. | |||||
| * Interfaces for a bridge are all in bdg_ports[]. | |||||
| * The array has fixed size, an empty entry does not terminate | |||||
| * the search, but lookups only occur on attach/detach so we | |||||
| * don't mind if they are slow. | |||||
| * | |||||
| * The bridge is non blocking on the transmit ports: excess | |||||
| * packets are dropped if there is no room on the output port. | |||||
| * | |||||
| * bdg_lock protects accesses to the bdg_ports array. | |||||
| * This is a rw lock (or equivalent). | |||||
| */ | |||||
| #define NM_BDG_IFNAMSIZ IFNAMSIZ | |||||
| struct nm_bridge { | |||||
| /* XXX what is the proper alignment/layout ? */ | |||||
| BDG_RWLOCK_T bdg_lock; /* protects bdg_ports */ | |||||
| int bdg_namelen; | |||||
| uint32_t bdg_active_ports; | |||||
| char bdg_basename[NM_BDG_IFNAMSIZ]; | |||||
| /* Indexes of active ports (up to active_ports) | |||||
| * and all other remaining ports. | |||||
| */ | |||||
| uint32_t bdg_port_index[NM_BDG_MAXPORTS]; | |||||
| /* used by netmap_bdg_detach_common() */ | |||||
| uint32_t tmp_bdg_port_index[NM_BDG_MAXPORTS]; | |||||
| struct netmap_vp_adapter *bdg_ports[NM_BDG_MAXPORTS]; | |||||
| /* | |||||
| * Programmable lookup functions to figure out the destination port. | |||||
| * It returns either of an index of the destination port, | |||||
| * NM_BDG_BROADCAST to broadcast this packet, or NM_BDG_NOPORT not to | |||||
| * forward this packet. ring_nr is the source ring index, and the | |||||
| * function may overwrite this value to forward this packet to a | |||||
| * different ring index. | |||||
| * The function is set by netmap_bdg_regops(). | |||||
| */ | |||||
| struct netmap_bdg_ops *bdg_ops; | |||||
| /* | |||||
| * Contains the data structure used by the bdg_ops.lookup function. | |||||
| * By default points to *ht which is allocated on attach and used by the default lookup | |||||
| * otherwise will point to the data structure received by netmap_bdg_regops(). | |||||
| */ | |||||
| void *private_data; | |||||
| struct nm_hash_ent *ht; | |||||
| /* Currently used to specify if the bridge is still in use while empty and | |||||
| * if it has been put in exclusive mode by an external module, see netmap_bdg_regops() | |||||
| * and netmap_bdg_create(). | |||||
| */ | |||||
| #define NM_BDG_ACTIVE 1 | |||||
| #define NM_BDG_EXCLUSIVE 2 | |||||
| uint8_t bdg_flags; | |||||
| #ifdef CONFIG_NET_NS | |||||
| struct net *ns; | |||||
| #endif /* CONFIG_NET_NS */ | |||||
| }; | |||||
| static inline void * | |||||
| nm_bdg_get_auth_token(struct nm_bridge *b) | |||||
| { | |||||
| return b->ht; | |||||
| } | |||||
| /* bridge not in exclusive mode ==> always valid | |||||
| * bridge in exclusive mode (created through netmap_bdg_create()) ==> check authentication token | |||||
| */ | |||||
| static inline int | |||||
| nm_bdg_valid_auth_token(struct nm_bridge *b, void *auth_token) | |||||
| { | |||||
| return !(b->bdg_flags & NM_BDG_EXCLUSIVE) || b->ht == auth_token; | |||||
| } | |||||
| int netmap_get_bdg_na(struct nmreq_header *hdr, struct netmap_adapter **na, | |||||
| struct netmap_mem_d *nmd, int create, struct netmap_bdg_ops *ops); | |||||
| struct nm_bridge *nm_find_bridge(const char *name, int create, struct netmap_bdg_ops *ops); | |||||
| int netmap_bdg_free(struct nm_bridge *b); | |||||
| void netmap_bdg_detach_common(struct nm_bridge *b, int hw, int sw); | |||||
| int netmap_vp_bdg_ctl(struct nmreq_header *hdr, struct netmap_adapter *na); | |||||
| int netmap_vp_reg(struct netmap_adapter *na, int onoff); | |||||
| int netmap_bwrap_reg(struct netmap_adapter *, int onoff); | |||||
| int netmap_vp_reg(struct netmap_adapter *na, int onoff); | |||||
| int netmap_vp_rxsync(struct netmap_kring *kring, int flags); | |||||
| int netmap_bwrap_notify(struct netmap_kring *kring, int flags); | |||||
| int netmap_bwrap_attach_common(struct netmap_adapter *na, | |||||
| struct netmap_adapter *hwna); | |||||
| int netmap_bwrap_krings_create_common(struct netmap_adapter *na); | |||||
| void netmap_bwrap_krings_delete_common(struct netmap_adapter *na); | |||||
| #define NM_NEED_BWRAP (-2) | |||||
| #endif /* _NET_NETMAP_BDG_H_ */ | |||||