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Annotation of xinu/sys/ethwrite.c, revision 1.1.1.1

1.1       root        1: /* ethwrite.c - ethwrite */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <proc.h>
                      6: #include <network.h>
                      7: 
                      8: /*------------------------------------------------------------------------
                      9:  *  ethwrite - write a single packet to the ethernet
                     10:  *------------------------------------------------------------------------
                     11:  */
                     12: 
                     13: ethwrite(devptr, buff, len)
                     14: struct devsw   *devptr;
                     15: struct epacket *buff;
                     16: int    len;
                     17: {
                     18:        struct  etblk   *etptr;
                     19:        PStype  ps;
                     20: 
                     21:        if (len > EMAXPAK)
                     22:                return(SYSERR);
                     23:        if (len < EMINPAK)
                     24:                len = EMINPAK;
                     25:        etptr = (struct etblk *) devptr->dvioblk;
                     26:        blkcopy(buff->ep_hdr.e_src, etptr->etpaddr, EPADLEN);
                     27:        disable(ps);
                     28:        wait(etptr->etwsem);
                     29:        ethwstrt(etptr, buff, etptr->etlen = len, DC_NORM);
                     30:        restore(ps);
                     31:        return(OK);
                     32: }

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