1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1991,1997-1998 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_PFMOD_H 28*0Sstevel@tonic-gate #define _SYS_PFMOD_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #ifdef __cplusplus 33*0Sstevel@tonic-gate extern "C" { 34*0Sstevel@tonic-gate #endif 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate /* 37*0Sstevel@tonic-gate * Ioctls. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate #define PFIOC ('P' << 8) 40*0Sstevel@tonic-gate #define PFIOCSETF (PFIOC|1) /* replace current packet filter */ 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #define ENMAXFILTERS 255 /* maximum filter short words */ 43*0Sstevel@tonic-gate #define PF_MAXFILTERS 2047 /* max short words for newpacketfilt */ 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate /* 46*0Sstevel@tonic-gate * filter structure for SETF 47*0Sstevel@tonic-gate */ 48*0Sstevel@tonic-gate struct packetfilt { 49*0Sstevel@tonic-gate uchar_t Pf_Priority; /* priority of filter */ 50*0Sstevel@tonic-gate uchar_t Pf_FilterLen; /* length of filter cmd list */ 51*0Sstevel@tonic-gate ushort_t Pf_Filter[ENMAXFILTERS]; /* filter command list */ 52*0Sstevel@tonic-gate }; 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * The extended packet filter structure 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate struct Pf_ext_packetfilt { 58*0Sstevel@tonic-gate uchar_t Pf_Priority; /* priority of filter */ 59*0Sstevel@tonic-gate unsigned int Pf_FilterLen; /* length of filter cmd list */ 60*0Sstevel@tonic-gate ushort_t Pf_Filter[PF_MAXFILTERS]; /* filter command list */ 61*0Sstevel@tonic-gate }; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate /* 64*0Sstevel@tonic-gate * We now allow specification of up to MAXFILTERS (short) words of a filter 65*0Sstevel@tonic-gate * command list to be applied to incoming packets to determine if 66*0Sstevel@tonic-gate * those packets should be given to a particular open ethernet file. 67*0Sstevel@tonic-gate * Alternatively, PF_MAXFILTERS and Pf_ext_packetfilt structure can be 68*0Sstevel@tonic-gate * used in case even bigger filter command list is needed. 69*0Sstevel@tonic-gate * 70*0Sstevel@tonic-gate * In this context, "word" means a short (16-bit) integer. 71*0Sstevel@tonic-gate * 72*0Sstevel@tonic-gate * Each open enet file specifies the filter command list via ioctl. 73*0Sstevel@tonic-gate * Each filter command list specifies a sequence of actions that leaves a 74*0Sstevel@tonic-gate * boolean value on the top of an internal stack. Each word of the 75*0Sstevel@tonic-gate * command list specifies an action from the set {PUSHLIT, PUSHZERO, 76*0Sstevel@tonic-gate * PUSHWORD+N} which respectively push the next word of the filter, zero, 77*0Sstevel@tonic-gate * or word N of the incoming packet on the stack, and a binary operator 78*0Sstevel@tonic-gate * from the set {EQ, LT, LE, GT, GE, AND, OR, XOR} which operates on the 79*0Sstevel@tonic-gate * top two elements of the stack and replaces them with its result. The 80*0Sstevel@tonic-gate * special action NOPUSH and the special operator NOP can be used to only 81*0Sstevel@tonic-gate * perform the binary operation or to only push a value on the stack. 82*0Sstevel@tonic-gate * 83*0Sstevel@tonic-gate * If the final value of the filter operation is true, then the packet is 84*0Sstevel@tonic-gate * accepted for the open file which specified the filter. 85*0Sstevel@tonic-gate */ 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* these must sum to sizeof (ushort_t)! */ 88*0Sstevel@tonic-gate #define ENF_NBPA 10 /* # bits / action */ 89*0Sstevel@tonic-gate #define ENF_NBPO 6 /* # bits / operator */ 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate /* binary operators */ 92*0Sstevel@tonic-gate #define ENF_NOP (0 << ENF_NBPA) 93*0Sstevel@tonic-gate #define ENF_EQ (1 << ENF_NBPA) 94*0Sstevel@tonic-gate #define ENF_LT (2 << ENF_NBPA) 95*0Sstevel@tonic-gate #define ENF_LE (3 << ENF_NBPA) 96*0Sstevel@tonic-gate #define ENF_GT (4 << ENF_NBPA) 97*0Sstevel@tonic-gate #define ENF_GE (5 << ENF_NBPA) 98*0Sstevel@tonic-gate #define ENF_AND (6 << ENF_NBPA) 99*0Sstevel@tonic-gate #define ENF_OR (7 << ENF_NBPA) 100*0Sstevel@tonic-gate #define ENF_XOR (8 << ENF_NBPA) 101*0Sstevel@tonic-gate #define ENF_COR (9 << ENF_NBPA) 102*0Sstevel@tonic-gate #define ENF_CAND (10 << ENF_NBPA) 103*0Sstevel@tonic-gate #define ENF_CNOR (11 << ENF_NBPA) 104*0Sstevel@tonic-gate #define ENF_CNAND (12 << ENF_NBPA) 105*0Sstevel@tonic-gate #define ENF_NEQ (13 << ENF_NBPA) 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate /* stack actions */ 108*0Sstevel@tonic-gate #define ENF_NOPUSH 0 109*0Sstevel@tonic-gate #define ENF_PUSHLIT 1 110*0Sstevel@tonic-gate #define ENF_PUSHZERO 2 111*0Sstevel@tonic-gate #define ENF_PUSHONE 3 112*0Sstevel@tonic-gate #define ENF_PUSHFFFF 4 113*0Sstevel@tonic-gate #define ENF_PUSHFF00 5 114*0Sstevel@tonic-gate #define ENF_PUSH00FF 6 115*0Sstevel@tonic-gate #define ENF_PUSHWORD 16 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate #ifdef __cplusplus 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate #endif 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate #endif /* _SYS_PFMOD_H */ 122