projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 2c0ded8a MA |
1 | /* enet.h Stanford 25 April 1983 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Ethernet definitions needed for user processes | |
| 5 | * | |
| 6 | ********************************************************************** | |
| 7 | * HISTORY | |
| 8 | * 7 October 1985 Jeff Mogul Stanford | |
| 9 | * Added EIOCMFREE ioctl to indicate # of free minor devices; | |
| 10 | * may or may not be useful. | |
| 11 | * 17 October 1984 Jeff Mogul Stanford | |
| 12 | * Added ENF_CAND, ENF_COR, ENF_CNAND, and ENF_CNOR, short-circuit | |
| 13 | * operators, to make filters run faster. | |
| 14 | * All evaluate "(*sp++ == *sp++)": | |
| 15 | * ENF_CAND: returns false immediately if result is false, otherwise | |
| 16 | * continue | |
| 17 | * ENF_COR: returns true immediately if result is true, otherwise | |
| 18 | * continue | |
| 19 | * ENF_CNAND: returns true immediately if result is false, otherwise | |
| 20 | * continue | |
| 21 | * ENF_CNOR: returns false immediately if result is true, otherwise | |
| 22 | * continue | |
| 23 | * Also added ENF_NEQ to complement ENF_EQ | |
| 24 | * | |
| 25 | * 10 November 1983 Jeffrey Mogul Stanford | |
| 26 | * Slight restructuring for support of 10mb ethers; | |
| 27 | * added the EIOCDEVP ioctl and associated definitions | |
| 28 | * and removed the EIOCMTU ioctl (subsumed by EIOCDEVP) | |
| 29 | * | |
| 30 | * 25-Apr-83 Jeffrey Mogul Stanford | |
| 31 | * Began conversion to 4.2BSD. This involves removing all | |
| 32 | * references to the actual hardware. | |
| 33 | * Incompatible change: ioctl encodings! | |
| 34 | * Added EIOCMTU ioctl to get MTU (max packet size). | |
| 35 | * Most previous history comments removed. | |
| 36 | * Definitions of interest only to kernel now are in enetdefs.h | |
| 37 | * | |
| 38 | * 10-Aug-82 Mike Accetta (mja) at Carnegie-Mellon University | |
| 39 | * Added EIOCMBIS and EIOCMBIC definitions, and new ENHOLDSIG mode | |
| 40 | * bit and ENPRIVMODES defintions (V3.05e). [Last change before | |
| 41 | * 4.2BSD conversion starts.] | |
| 42 | * | |
| 43 | * 22-Feb-80 Rick Rashid (rfr) at Carnegie-Mellon University | |
| 44 | * Rewritten for multiple simultaneous opens with filters (V1.05). | |
| 45 | * | |
| 46 | * 18-Jan-80 Mike Accetta (mja) at Carnegie-Mellon University | |
| 47 | * Created (V1.00). | |
| 48 | * | |
| 49 | ********************************************************************** | |
| 50 | */ | |
| 51 | #ifdef KERNEL | |
| 52 | #include "ioctl.h" | |
| 53 | #else | |
| 54 | #include <sys/ioctl.h> | |
| 55 | #endif KERNEL | |
| 56 | ||
| 57 | #define ENMAXFILTERS 40 /* maximum filter short words */ | |
| 58 | ||
| 59 | /* | |
| 60 | * filter structure for SETF | |
| 61 | */ | |
| 62 | struct enfilter | |
| 63 | { | |
| 64 | u_char enf_Priority; /* priority of filter */ | |
| 65 | u_char enf_FilterLen; /* length of filter command list */ | |
| 66 | u_short enf_Filter[ENMAXFILTERS]; /* the filter command list */ | |
| 67 | }; | |
| 68 | ||
| 69 | /* set/get parameters, set filter ioctl commands */ | |
| 70 | #define EIOCSETP _IOW(E,100, struct eniocb) | |
| 71 | #define EIOCGETP _IOR(E,101, struct eniocb) | |
| 72 | #define EIOCSETF _IOW(E,102, struct enfilter) | |
| 73 | #define EIOCENBS _IOW(E,103, int) | |
| 74 | #define EIOCINHS _IO(E,104) | |
| 75 | #define EIOCSETW _IOW(E,105, u_int) | |
| 76 | #define EIOCFLUSH _IO(E,106) | |
| 77 | #define EIOCALLOCP _IO(E,107) | |
| 78 | #define EIOCDEALLOCP _IO(E,108) | |
| 79 | #define EIOCMBIS _IOW(E,109, u_short) | |
| 80 | #define EIOCMBIC _IOW(E,110, u_short) | |
| 81 | #define EIOCDEVP _IOR(E,111, struct endevp) | |
| 82 | #define EIOCMFREE _IOR(E,112, int) | |
| 83 | ||
| 84 | /* | |
| 85 | * Bits in mode word modified by EIOCMBIS and EIOCMBIC. | |
| 86 | */ | |
| 87 | #define ENHOLDSIG (0x0001) /* don't disable signal after sending */ | |
| 88 | #define ENPRIVMODES (~(ENHOLDSIG)) | |
| 89 | ||
| 90 | /* | |
| 91 | * We now allow specification of up to MAXFILTERS (short) words of a filter | |
| 92 | * command list to be applied to incoming packets to determine if | |
| 93 | * those packets should be given to a particular open ethernet file. | |
| 94 | * | |
| 95 | * Each open enet file specifies the filter command list via iocontrl. | |
| 96 | * Each filter command list specifies a sequences of actions which leave a | |
| 97 | * boolean value on the top of an internal stack. Each word of the | |
| 98 | * command list specifies an action from the set {PUSHLIT, PUSHZERO, | |
| 99 | * PUSHWORD+N} which respectively push the next word of the stack, zero, | |
| 100 | * or word N of the incoming packet on the stack, and a binary operator | |
| 101 | * from the set {EQ, LT, LE, GT, GE, AND, OR, XOR} which operates on the | |
| 102 | * top two elements of the stack and replaces them with its result. The | |
| 103 | * special action NOPUSH and the special operator NOP can be used to only | |
| 104 | * perform the binary operation or to only push a value on the stack. | |
| 105 | * | |
| 106 | * If the final value of the filter operation is true, then the packet is | |
| 107 | * accepted for the open file which specified the filter. | |
| 108 | * | |
| 109 | */ | |
| 110 | ||
| 111 | /* these must sum to 16! */ | |
| 112 | #define ENF_NBPA 10 /* # bits / action */ | |
| 113 | #define ENF_NBPO 6 /* # bits / operator */ | |
| 114 | ||
| 115 | /* binary operators */ | |
| 116 | #define ENF_NOP (0<<ENF_NBPA) | |
| 117 | #define ENF_EQ (1<<ENF_NBPA) | |
| 118 | #define ENF_LT (2<<ENF_NBPA) | |
| 119 | #define ENF_LE (3<<ENF_NBPA) | |
| 120 | #define ENF_GT (4<<ENF_NBPA) | |
| 121 | #define ENF_GE (5<<ENF_NBPA) | |
| 122 | #define ENF_AND (6<<ENF_NBPA) | |
| 123 | #define ENF_OR (7<<ENF_NBPA) | |
| 124 | #define ENF_XOR (8<<ENF_NBPA) | |
| 125 | #define ENF_COR (9<<ENF_NBPA) | |
| 126 | #define ENF_CAND (10<<ENF_NBPA) | |
| 127 | #define ENF_CNOR (11<<ENF_NBPA) | |
| 128 | #define ENF_CNAND (12<<ENF_NBPA) | |
| 129 | #define ENF_NEQ (13<<ENF_NBPA) | |
| 130 | ||
| 131 | /* stack actions */ | |
| 132 | #define ENF_NOPUSH 0 | |
| 133 | #define ENF_PUSHLIT 1 | |
| 134 | #define ENF_PUSHZERO 2 | |
| 135 | #define ENF_PUSHWORD 16 | |
| 136 | ||
| 137 | /* | |
| 138 | * parameter buffer structure for GETP and SETP | |
| 139 | */ | |
| 140 | struct eniocb | |
| 141 | { | |
| 142 | u_char en_addr; /* ethernet address (RO) */ | |
| 143 | u_char en_maxfilters; /* max filter words available (RO) */ | |
| 144 | u_char en_maxwaiting; /* max queued input packets (RO) */ | |
| 145 | u_char en_maxpriority; /* max filter priority for this file (RO) */ | |
| 146 | long en_rtout; /* receive timeout in (jiffies) (RW) */ | |
| 147 | }; | |
| 148 | ||
| 149 | /* | |
| 150 | * parameter structure for EIOCDEVP (get device parameters) | |
| 151 | */ | |
| 152 | ||
| 153 | #define EN_MAX_ADDR_LEN 8 /* maximum bytes in a hardware address */ | |
| 154 | ||
| 155 | struct endevp { | |
| 156 | u_char end_dev_type; /* device type, codes below */ | |
| 157 | u_char end_addr_len; /* length (bytes) of a hardware address */ | |
| 158 | u_short end_hdr_len; /* length of a hardware packet header */ | |
| 159 | u_short end_MTU; /* maximum packet size (bytes) */ | |
| 160 | u_char end_addr[EN_MAX_ADDR_LEN]; | |
| 161 | /* hardware address for this unit */ | |
| 162 | u_char end_broadaddr[EN_MAX_ADDR_LEN]; | |
| 163 | /* hardware-supported broadcast address */ | |
| 164 | }; | |
| 165 | ||
| 166 | /* Ethernet Device Type codes */ | |
| 167 | ||
| 168 | #define ENDT_3MB 3 /* Xerox Experimental Ethernet */ | |
| 169 | #define ENDT_BS3MB 1 /* Xerox Experimental Ethernet/byteswapped */ | |
| 170 | #define ENDT_10MB 2 /* Xerox-DEC-Intel Standard Ethernet */ | |
| 171 | ||
| 172 | #define ENDT_MIN 1 /* minimum defined device type code */ | |
| 173 | #define ENDT_MAX 3 /* maximum defined device type code */ |