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_NETISR2_H_ 67 #define _NET_NETISR2_H_ 68 69 #ifndef _KERNEL 70 #error "kernel only header file" 71 #endif 72 73 #ifndef _SYS_SYSTM_H_ 74 #include <sys/systm.h> 75 #endif 76 #ifndef _SYS_THREAD_H_ 77 #include <sys/thread.h> 78 #endif 79 #ifndef _NET_NETISR_H_ 80 #include <net/netisr.h> 81 #endif 82 83 extern struct thread netisr_cpu[MAXCPU]; 84 85 /* 86 * Return the message port for the general protocol message servicing 87 * thread for a particular cpu. 88 */ 89 static __inline lwkt_port_t 90 netisr_cpuport(int cpu) 91 { 92 KKASSERT(cpu >= 0 && cpu < ncpus); 93 return &netisr_cpu[cpu].td_msgport; 94 } 95 96 /* 97 * Return the current cpu's network protocol thread. 98 */ 99 static __inline lwkt_port_t 100 netisr_curport(void) 101 { 102 return netisr_cpuport(mycpuid); 103 } 104 105 /* 106 * Return the cpu for the hash. 107 */ 108 static __inline int 109 netisr_hashcpu(uint16_t hash) 110 { 111 return (hash & ncpus2_mask); 112 } 113 114 /* 115 * Return the message port for the general protocol message servicing 116 * thread for the hash. 117 */ 118 static __inline lwkt_port_t 119 netisr_hashport(uint16_t hash) 120 { 121 return netisr_cpuport(netisr_hashcpu(hash)); 122 } 123 124 #define IS_NETISR(td, n) (&(td)->td_msgport == netisr_cpuport((n))) 125 #define ASSERT_IS_NETISR(td, n) \ 126 KASSERT(IS_NETISR((td), (n)), ("thread %p is not netisr%d", (td), (n))) 127 #define ASSERT_IN_NETISR(n) ASSERT_IS_NETISR(curthread, (n)) 128 #define ASSERT_CANDOMSG_NETISR0(td) \ 129 KASSERT((td)->td_type != TD_TYPE_NETISR || IS_NETISR((td), 0), \ 130 ("can't domsg to netisr0 from thread %p", (td))) 131 132 #endif /* _NET_NETISR2_H_ */ 133