315f04614c
implemented using the ISR facility, and cannot be triggered by calling splnet()/splx(). MFC after: 3 weeks
94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*-
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* Copyright (c) 1980, 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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* 4. 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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* @(#)netisr.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NET_NETISR_H_
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#define _NET_NETISR_H_
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/*
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* The netisr (network interrupt service routine) provides a deferred
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* execution evironment in which (generally inbound) network processing can
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* take place. Protocols register handlers and, optionally, packet queues;
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* when packets are delivered to the queue, the protocol handler will be
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* executed directly, or via deferred dispatch depending on the
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* circumstances.
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*
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* Historically, this was implemented by the BSD software ISR facility; it is
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* now implemented via a software ithread (SWI).
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*/
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#define NETISR_POLL 0 /* polling callback, must be first */
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#define NETISR_IP 2 /* same as AF_INET */
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#define NETISR_ROUTE 14 /* routing socket */
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#define NETISR_AARP 15 /* Appletalk ARP */
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#define NETISR_ATALK2 16 /* Appletalk phase 2 */
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#define NETISR_ATALK1 17 /* Appletalk phase 1 */
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#define NETISR_ARP 18 /* same as AF_LINK */
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#define NETISR_IPX 23 /* same as AF_IPX */
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#define NETISR_USB 25 /* USB soft interrupt */
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#define NETISR_PPP 26 /* PPP soft interrupt */
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#define NETISR_IPV6 27
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#define NETISR_NATM 28
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#define NETISR_ATM 29
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#define NETISR_NETGRAPH 30
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#define NETISR_POLLMORE 31 /* polling callback, must be last */
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#ifndef LOCORE
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#ifdef _KERNEL
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void legacy_setsoftnet(void);
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extern volatile unsigned int netisr; /* scheduling bits for network */
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#define schednetisr(anisr) do { \
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atomic_set_rel_int(&netisr, 1 << (anisr)); \
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legacy_setsoftnet(); \
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} while (0)
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/* used to atomically schedule multiple netisrs */
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#define schednetisrbits(isrbits) do { \
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atomic_set_rel_int(&netisr, isrbits); \
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legacy_setsoftnet(); \
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} while (0)
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struct ifqueue;
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struct mbuf;
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typedef void netisr_t (struct mbuf *);
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void netisr_dispatch(int, struct mbuf *);
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int netisr_queue(int, struct mbuf *);
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#define NETISR_MPSAFE 0x0001 /* ISR does not need Giant */
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void netisr_register(int, netisr_t *, struct ifqueue *, int);
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void netisr_unregister(int);
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#endif
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#endif
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#endif
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