1 /* 2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1980, 1986, 1989, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)netisr.h 8.1 (Berkeley) 6/10/93 63 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $ 64 */ 65 66 #ifndef _NET_NETISR_H_ 67 #define _NET_NETISR_H_ 68 69 /* 70 * The networking code runs off software interrupts. 71 * 72 * You can switch into the network by doing splnet() and return by splx(). 73 * The software interrupt level for the network is higher than the software 74 * level for the clock (so you can enter the network in routines called 75 * at timeout time). 76 */ 77 78 /* 79 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status 80 * word which is used to de-multiplex a single software 81 * interrupt used for scheduling the network code to calls 82 * on the lowest level routine of each protocol. 83 */ 84 #define NETISR_RESERVED0 0 /* cannot be used */ 85 #define NETISR_IP 2 /* same as AF_INET */ 86 #define NETISR_ARP 18 /* same as AF_LINK */ 87 #define NETISR_MPLS 21 /* MPLS */ 88 #define NETISR_USB 25 /* USB soft interrupt */ 89 #define NETISR_PPP 27 /* PPP soft interrupt */ 90 #define NETISR_IPV6 28 /* same as AF_INET6 */ 91 #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ 92 #define NETISR_BLUETOOTH 31 93 94 #define NETISR_MAX 32 95 96 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 97 98 #ifndef _SYS_TYPES_H_ 99 #include <sys/types.h> 100 #endif 101 #ifndef _SYS_QUEUE_H_ 102 #include <sys/queue.h> 103 #endif 104 #ifndef _SYS_PROTOSW_H_ 105 #include <sys/protosw.h> 106 #endif 107 #ifndef _SYS_MSGPORT_H_ 108 #include <sys/msgport.h> 109 #endif 110 #ifndef _NET_NETMSG_H_ 111 #include <net/netmsg.h> 112 #endif 113 114 #endif 115 116 #ifdef _KERNEL 117 118 void netmsg_so_notify(netmsg_t); 119 void netmsg_so_notify_abort(netmsg_t); 120 void netmsg_so_notify_doabort(lwkt_msg_t); 121 122 #endif 123 124 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 125 126 /* 127 * Temporary pktinfo structure passed directly from the driver to 128 * ether_input(), allows us to bypass numerous checks. 129 */ 130 struct pktinfo { 131 int pi_netisr; /* netisr index, e.g. NETISR_IP */ 132 uint32_t pi_flags; /* PKTINFO_FLAG_ */ 133 int pi_l3proto; /* layer3 protocol number */ 134 }; 135 136 #define PKTINFO_FLAG_FRAG 0x1 137 138 /* 139 * NETISR_xxx registrations 140 */ 141 struct netisr { 142 netisr_fn_t ni_handler; /* packet handler function */ 143 netisr_hashck_t ni_hashck; /* hash check function */ 144 netisr_hashfn_t ni_hashfn; /* characterize pkt return hash */ 145 struct netmsg_base ni_netmsg; /* for sched_netisr() (no-data) */ 146 }; 147 148 #endif 149 150 #ifdef _KERNEL 151 152 /* NOTE: MUST be power-of-2 */ 153 #define NETISR_CPUMAX 128 /* supported by most NICs */ 154 #define NETISR_CPUMASK (NETISR_CPUMAX - 1) 155 156 #define NETISR_ROLLUP_PRIO_TCP 200 157 #define NETISR_ROLLUP_PRIO_IFSTART 50 158 159 extern int netisr_ncpus; 160 extern lwkt_port netisr_adone_rport; 161 extern lwkt_port netisr_afree_rport; 162 extern lwkt_port netisr_afree_free_so_rport; 163 extern lwkt_port netisr_apanic_rport; 164 extern lwkt_port netisr_sync_port; 165 166 struct netisr_rollup; 167 168 void netisr_register(int, netisr_fn_t, netisr_hashfn_t); 169 void netisr_register_hashcheck(int, netisr_hashck_t); 170 struct netisr_rollup 171 *netisr_register_rollup(netisr_ru_t ru_func, int ru_prio); 172 void netisr_unregister_rollup(struct netisr_rollup *key); 173 174 void netisr_characterize(int num, struct mbuf **mp, int hoff); 175 void netisr_hashcheck(int num, struct mbuf *m, 176 const struct pktinfo *pi); 177 int netisr_queue(int, struct mbuf *); 178 int netisr_handle(int, struct mbuf *); 179 180 struct netisr_barrier *netisr_barrier_create(void); 181 void netisr_barrier_set(struct netisr_barrier *); 182 void netisr_barrier_rem(struct netisr_barrier *); 183 184 void netmsg_service_sync(void); 185 void netmsg_sync_handler(netmsg_t); 186 void schednetisr(int); 187 188 #endif /* _KERNEL */ 189 190 #endif /* _NET_NETISR_H_ */ 191