1 /*- 2 * Copyright (c) 1980, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)netisr.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NET_NETISR_H_ 34 #define _NET_NETISR_H_ 35 36 /* 37 * The netisr (network interrupt service routine) provides a deferred 38 * execution evironment in which (generally inbound) network processing can 39 * take place. Protocols register handlers and, optionally, packet queues; 40 * when packets are delivered to the queue, the protocol handler will be 41 * executed directly, or via deferred dispatch depending on the 42 * circumstances. 43 * 44 * Historically, this was implemented by the BSD software ISR facility; it is 45 * now implemented via a software ithread (SWI). 46 */ 47 #define NETISR_POLL 0 /* polling callback, must be first */ 48 #define NETISR_IP 2 /* same as AF_INET */ 49 #define NETISR_ROUTE 14 /* routing socket */ 50 #define NETISR_AARP 15 /* Appletalk ARP */ 51 #define NETISR_ATALK2 16 /* Appletalk phase 2 */ 52 #define NETISR_ATALK1 17 /* Appletalk phase 1 */ 53 #define NETISR_ARP 18 /* same as AF_LINK */ 54 #define NETISR_IPX 23 /* same as AF_IPX */ 55 #define NETISR_USB 25 /* USB soft interrupt */ 56 #define NETISR_PPP 26 /* PPP soft interrupt */ 57 #define NETISR_IPV6 27 58 #define NETISR_NATM 28 59 #define NETISR_ATM 29 60 #define NETISR_NETGRAPH 30 61 #define NETISR_POLLMORE 31 /* polling callback, must be last */ 62 63 #ifndef LOCORE 64 #ifdef _KERNEL 65 66 void legacy_setsoftnet(void); 67 68 extern volatile unsigned int netisr; /* scheduling bits for network */ 69 #define schednetisr(anisr) do { \ 70 atomic_set_rel_int(&netisr, 1 << (anisr)); \ 71 legacy_setsoftnet(); \ 72 } while (0) 73 /* used to atomically schedule multiple netisrs */ 74 #define schednetisrbits(isrbits) do { \ 75 atomic_set_rel_int(&netisr, isrbits); \ 76 legacy_setsoftnet(); \ 77 } while (0) 78 79 struct ifqueue; 80 struct mbuf; 81 82 typedef void netisr_t (struct mbuf *); 83 84 void netisr_dispatch(int, struct mbuf *); 85 int netisr_queue(int, struct mbuf *); 86 #define NETISR_FORCEQUEUE 0x0002 /* Force queued dispatch. */ 87 void netisr_register(int, netisr_t *, struct ifqueue *, int); 88 void netisr_unregister(int); 89 90 #endif 91 #endif 92 93 #endif 94