taglinefilesource code
xhead279drivers/net/slip.cmemcpy(sl->xbuff, sl->xhead, sl->xleft);
xhead285drivers/net/slip.csl->xhead = sl->xbuff;
xhead447drivers/net/slip.csl->xhead = sl->xbuff + actual;
xhead474drivers/net/slip.cactual = tty->driver.write(tty, 0, sl->xhead, sl->xleft);
xhead476drivers/net/slip.csl->xhead += actual;
xhead61drivers/net/slip.hunsigned char         *xhead;         /* pointer to next byte to XMIT */