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Annotation of researchv10dc/lsys/sys/dkmod.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * one dkmodule per hardware interface to datakit
        !             3:  * a given hardware device == (major device, range of minor devices)
        !             4:  * channel 0 == (dev, lo)
        !             5:  * there are hi-lo channels
        !             6:  */
        !             7: 
        !             8: struct dkmodule {
        !             9:        char    *dkstate;               /* open/closed status of channels */
        !            10:        struct  queue *listnrq;         /* channel to controller */
        !            11:        short   dev;                    /* major device of datakit interface */
        !            12:        short   lo, hi;                 /* range of devs on this controller */
        !            13:        short   type;                   /* type of listener */
        !            14: };
        !            15: 
        !            16: #ifdef KERNEL
        !            17: struct dkmodule *dkmodall(), *getdkmod();
        !            18: #endif
        !            19: 
        !            20: /*
        !            21:  * channel states
        !            22:  */
        !            23: #define        DKCLOSED 0
        !            24: #define        DKRCLOSE 1              /* remote hung up, local still around */
        !            25: #define        DKLCLOSE 2              /* closed locally, CMC hasn't acked yet */
        !            26: #define        DKOPEN   3              /* in use */
        !            27: 
        !            28: /*
        !            29:  * listener types
        !            30:  */
        !            31: #define        CMCLD   'c'
        !            32: #define        UNIXPLD 'u'
        !            33: 
        !            34: /*
        !            35:  * M_PRICTL messages contain
        !            36:  * one byte of subtype
        !            37:  * perhaps another byte of channel number
        !            38:  */
        !            39: 
        !            40: #define        DKMCLOSE        0       /* this channel is closing */
        !            41: #define        DKMXINIT        01      /* re-init URP because of splice */

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