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. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)netisr.h 8.1 (Berkeley) 6/10/93 67 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $ 68 */ 69 70 #ifndef _NET_NETISR_H_ 71 #define _NET_NETISR_H_ 72 73 /* 74 * The networking code runs off software interrupts. 75 * 76 * You can switch into the network by doing splnet() and return by splx(). 77 * The software interrupt level for the network is higher than the software 78 * level for the clock (so you can enter the network in routines called 79 * at timeout time). 80 */ 81 82 /* 83 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status 84 * word which is used to de-multiplex a single software 85 * interrupt used for scheduling the network code to calls 86 * on the lowest level routine of each protocol. 87 */ 88 #define NETISR_RESERVED0 0 /* cannot be used */ 89 #define NETISR_IP 2 /* same as AF_INET */ 90 #define NETISR_NS 6 /* same as AF_NS */ 91 #define NETISR_ARP 18 /* same as AF_LINK */ 92 #define NETISR_MPLS 21 /* MPLS */ 93 #define NETISR_IPX 23 /* same as AF_IPX */ 94 #define NETISR_USB 25 /* USB soft interrupt */ 95 #define NETISR_PPP 27 /* PPP soft interrupt */ 96 #define NETISR_IPV6 28 /* same as AF_INET6 */ 97 #define NETISR_NATM 29 /* same as AF_NATM */ 98 #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ 99 #define NETISR_BLUETOOTH 31 100 101 #define NETISR_MAX 32 102 103 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 104 105 #ifndef _SYS_TYPES_H_ 106 #include <sys/types.h> 107 #endif 108 #ifndef _SYS_QUEUE_H_ 109 #include <sys/queue.h> 110 #endif 111 #ifndef _SYS_PROTOSW_H_ 112 #include <sys/protosw.h> 113 #endif 114 #ifndef _SYS_MSGPORT_H_ 115 #include <sys/msgport.h> 116 #endif 117 #ifndef _NET_NETMSG_H_ 118 #include <net/netmsg.h> 119 #endif 120 121 #endif 122 123 #ifdef _KERNEL 124 125 void netmsg_so_notify(netmsg_t); 126 void netmsg_so_notify_abort(netmsg_t); 127 void netmsg_so_notify_doabort(lwkt_msg_t); 128 129 #endif 130 131 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 132 133 /* 134 * Temporary pktinfo structure passed directly from the driver to 135 * ether_input_chain(), allows us to bypass numerous checks. 136 */ 137 struct pktinfo { 138 int pi_netisr; /* netisr index, e.g. NETISR_IP */ 139 uint32_t pi_flags; /* PKTINFO_FLAG_ */ 140 int pi_l3proto; /* layer3 protocol number */ 141 }; 142 143 #define PKTINFO_FLAG_FRAG 0x1 144 145 /* 146 * NETISR_xxx registrations 147 */ 148 struct netisr { 149 netisr_fn_t ni_handler; /* packet handler function */ 150 netisr_hashck_t ni_hashck; /* hash check function */ 151 netisr_cpufn_t ni_cpufn; /* characterize pkt return cpu */ 152 struct netmsg_base ni_netmsg; /* for sched_netisr() (no-data) */ 153 }; 154 155 #endif 156 157 #ifdef _KERNEL 158 159 #define NETMSG_SERVICE_ADAPTIVE 1 160 #define NETMSG_SERVICE_MPSAFE 2 161 162 extern lwkt_port netisr_adone_rport; 163 extern lwkt_port netisr_afree_rport; 164 extern lwkt_port netisr_afree_free_so_rport; 165 extern lwkt_port netisr_apanic_rport; 166 extern lwkt_port netisr_sync_port; 167 168 lwkt_port_t cpu_portfn(int cpu); 169 lwkt_port_t cur_netport(void); 170 171 void netisr_register(int, netisr_fn_t, netisr_cpufn_t); 172 void netisr_register_hashcheck(int, netisr_hashck_t); 173 void netisr_register_rollup(netisr_ru_t ru_func); 174 175 void netisr_characterize(int num, struct mbuf **mp, int hoff); 176 void netisr_hashcheck(int num, struct mbuf *m, 177 const struct pktinfo *pi); 178 int netisr_queue(int, struct mbuf *); 179 int netisr_handle(int, struct mbuf *); 180 181 struct netisr_barrier *netisr_barrier_create(void); 182 void netisr_barrier_set(struct netisr_barrier *); 183 void netisr_barrier_rem(struct netisr_barrier *); 184 185 void netmsg_service_port_init(lwkt_port_t); 186 void netmsg_service_sync(void); 187 void netmsg_sync_handler(netmsg_t); 188 void schednetisr(int); 189 190 #define curnetport cur_netport() 191 192 #endif /* _KERNEL */ 193 194 #endif /* _NET_NETISR_H_ */ 195