taglinefilesource code
xhead283drivers/net/slip.cmemcpy(sl->xbuff, sl->xhead, sl->xleft);
xhead289drivers/net/slip.csl->xhead = sl->xbuff;
xhead451drivers/net/slip.csl->xhead = sl->xbuff + actual;
xhead479drivers/net/slip.cactual = tty->driver.write(tty, 0, sl->xhead, sl->xleft);
xhead481drivers/net/slip.csl->xhead += actual;
xhead65drivers/net/slip.hunsigned char         *xhead;         /* pointer to next byte to XMIT */