/* * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. * Copyright (c) 2004 The DragonFly Project. All rights reserved. * * This code is derived from software contributed to The DragonFly Project * by Jeffrey M. Hsu. * * 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. * 3. Neither the name of The DragonFly Project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific, prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 * COPYRIGHT HOLDERS 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. */ /* * Copyright (c) 1980, 1986, 1989, 1993 * The Regents of the University of California. 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)netisr.h 8.1 (Berkeley) 6/10/93 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $ */ #ifndef _NET_NETISR_H_ #define _NET_NETISR_H_ /* * The networking code runs off software interrupts. * * You can switch into the network by doing splnet() and return by splx(). * The software interrupt level for the network is higher than the software * level for the clock (so you can enter the network in routines called * at timeout time). */ /* * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status * word which is used to de-multiplex a single software * interrupt used for scheduling the network code to calls * on the lowest level routine of each protocol. */ #define NETISR_RESERVED0 0 /* cannot be used */ #define NETISR_IP 2 /* same as AF_INET */ #define NETISR_ARP 18 /* same as AF_LINK */ #define NETISR_MPLS 21 /* MPLS */ #define NETISR_USB 25 /* USB soft interrupt */ #define NETISR_PPP 27 /* PPP soft interrupt */ #define NETISR_IPV6 28 /* same as AF_INET6 */ #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ #define NETISR_BLUETOOTH 31 #define NETISR_MAX 32 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) #ifndef _SYS_TYPES_H_ #include <sys/types.h> #endif #ifndef _SYS_QUEUE_H_ #include <sys/queue.h> #endif #ifndef _SYS_PROTOSW_H_ #include <sys/protosw.h> #endif #ifndef _SYS_MSGPORT_H_ #include <sys/msgport.h> #endif #ifndef _NET_NETMSG_H_ #include <net/netmsg.h> #endif #endif #ifdef _KERNEL void netmsg_so_notify(netmsg_t); void netmsg_so_notify_abort(netmsg_t); void netmsg_so_notify_doabort(lwkt_msg_t); #endif #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) /* * Temporary pktinfo structure passed directly from the driver to * ether_input(), allows us to bypass numerous checks. */ struct pktinfo { int pi_netisr; /* netisr index, e.g. NETISR_IP */ uint32_t pi_flags; /* PKTINFO_FLAG_ */ int pi_l3proto; /* layer3 protocol number */ }; #define PKTINFO_FLAG_FRAG 0x1 /* * NETISR_xxx registrations */ struct netisr { netisr_fn_t ni_handler; /* packet handler function */ netisr_hashck_t ni_hashck; /* hash check function */ netisr_hashfn_t ni_hashfn; /* characterize pkt return hash */ struct netmsg_base ni_netmsg; /* for sched_netisr() (no-data) */ }; #endif #ifdef _KERNEL /* NOTE: MUST be power-of-2 */ #define NETISR_CPUMAX 128 /* supported by most NICs */ #define NETISR_CPUMASK (NETISR_CPUMAX - 1) #define NETISR_ROLLUP_PRIO_TCP 200 #define NETISR_ROLLUP_PRIO_IFSTART 50 extern int netisr_ncpus; extern lwkt_port netisr_adone_rport; extern lwkt_port netisr_afree_rport; extern lwkt_port netisr_afree_free_so_rport; extern lwkt_port netisr_apanic_rport; extern lwkt_port netisr_sync_port; struct netisr_rollup; void netisr_register(int, netisr_fn_t, netisr_hashfn_t); void netisr_register_hashcheck(int, netisr_hashck_t); struct netisr_rollup *netisr_register_rollup(netisr_ru_t ru_func, int ru_prio); void netisr_unregister_rollup(struct netisr_rollup *key); void netisr_characterize(int num, struct mbuf **mp, int hoff); void netisr_hashcheck(int num, struct mbuf *m, const struct pktinfo *pi); int netisr_queue(int, struct mbuf *); int netisr_handle(int, struct mbuf *); struct netisr_barrier *netisr_barrier_create(void); void netisr_barrier_set(struct netisr_barrier *); void netisr_barrier_rem(struct netisr_barrier *); void netmsg_service_sync(void); void netmsg_sync_handler(netmsg_t); void schednetisr(int); #endif /* _KERNEL */ #endif /* _NET_NETISR_H_ */
