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Annotation of OSKit-Mach/ipc/fipc.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1996-1994 The University of Utah and
        !             3:  * the Computer Systems Laboratory (CSL).  All rights reserved.
        !             4:  *
        !             5:  * Permission to use, copy, modify and distribute this software is hereby
        !             6:  * granted provided that (1) source code retains these copyright, permission,
        !             7:  * and disclaimer notices, and (2) redistributions including binaries
        !             8:  * reproduce the notices in supporting documentation, and (3) all advertising
        !             9:  * materials mentioning features or use of this software display the following
        !            10:  * acknowledgement: ``This product includes software developed by the
        !            11:  * Computer Systems Laboratory at the University of Utah.''
        !            12:  *
        !            13:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            14:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
        !            15:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            16:  *
        !            17:  * CSL requests users of this software to return to [email protected] any
        !            18:  * improvements that they make and grant CSL redistribution rights.
        !            19:  *
        !            20:  *  Utah $Hdr: fipc.h 1.1 96/2/29$
        !            21:  *  Author: Linus Kamb
        !            22:  */
        !            23: 
        !            24: #include <kern/lock.h>
        !            25: #include <device/if_ether.h>
        !            26: 
        !            27: 
        !            28: #define N_MAX_OPEN_FIPC_PORTS  32      /* In practice, 
        !            29:                                      * this should be much larger */
        !            30: #define MAX_FIPC_PORT_NUM              4095    /* ditto */
        !            31: 
        !            32: #define FIPC_MSG_TYPE                  0x1234
        !            33: 
        !            34: #define FIPC_BUFFER_SIZE               ETHERMTU
        !            35: #define FIPC_MSG_SIZE                  (FIPC_BUFFER_SIZE - sizeof(fipc_header_t))
        !            36: 
        !            37: #define FIPC_RECV_Q_SIZE               4
        !            38: #define N_MIN_RECV_BUFS                        5       /* 2 pages worth */
        !            39: #define N_MAX_RECV_BUFS                        (N_MAX_OPEN_FIPC_PORTS * FIPC_RECV_Q_SIZE)
        !            40: #define N_MIN_SEND_BUFS                        2
        !            41: #define N_MAX_SEND_BUFS                        5
        !            42: 
        !            43: #define INVALID                                        -1
        !            44: 
        !            45: #define ETHER_HWADDR_SIZE              6
        !            46: #define ETHER_DEVICE_NAME              "ne0"
        !            47: 
        !            48: typedef struct fipc_endpoint_structure
        !            49: {
        !            50:        unsigned char hwaddr[ETHER_HWADDR_SIZE];
        !            51:        unsigned short port;
        !            52: } fipc_endpoint_t;
        !            53: 
        !            54: typedef struct fipc_buffer_structure
        !            55: {
        !            56:        char *buffer;
        !            57:        unsigned short size;
        !            58:        fipc_endpoint_t sender;
        !            59: } fipc_buffer_q_ent;
        !            60: 
        !            61: typedef struct fipc_port_structure
        !            62: {
        !            63:        simple_lock_data_t lock;
        !            64:        boolean_t bound;
        !            65:        int valid_msg;
        !            66:        fipc_buffer_q_ent recv_q[FIPC_RECV_Q_SIZE];
        !            67:        int rq_head, rq_tail;
        !            68: } fipc_port_t;
        !            69: 
        !            70: typedef struct fipc_header_structure
        !            71: {
        !            72:        unsigned short dest_port;
        !            73:        unsigned short send_port;
        !            74:        unsigned int msg_size;
        !            75: } fipc_header_t;
        !            76: 
        !            77: typedef struct fipc_lookup_table_ent_structure
        !            78: {
        !            79:        int fipc_port;
        !            80:        int fpt_num;    /* f_ports[] entry number */
        !            81: } fipc_lookup_table_ent;
        !            82: 
        !            83: typedef struct fipc_stat_structure
        !            84: {
        !            85:        int dropped_msgs;
        !            86: } fipc_stat_t;
        !            87: 
        !            88: #define min(a,b)       (((a)<=(b)?(a):(b)))
        !            89: 
        !            90: char* get_fipc_buffer(int, boolean_t, boolean_t);
        !            91: void fipc_packet(char*, struct ether_header);
        !            92: 
        !            93: extern int fipc_sends;
        !            94: extern int fipc_recvs;
        !            95: 

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