97 static int set_ldisc(int tty, const struct ldisc_info *ldisc)  in set_ldisc()  argument
99 	TEST(ioctl(tty, TIOCSETD, &ldisc->n));  in set_ldisc()
107 			ldisc->name);  in set_ldisc()
110 			"Failed to set the %s line discipline", ldisc->name);  in set_ldisc()
116 static int open_pty(const struct ldisc_info *ldisc)  in open_pty()  argument
133 	return set_ldisc(pts, ldisc);  in open_pty()
184 static void do_pty(const struct ldisc_info *ldisc)  in do_pty()  argument
190 	switch (ldisc->n) {  in do_pty()
201 	switch (ldisc->n) {  in do_pty()
214 	tst_res(TPASS, "Wrote PTY %s %d (1)", ldisc->name, ptmx);  in do_pty()
223 	tst_res(TPASS, "Wrote PTY %s %d (2)", ldisc->name, ptmx);  in do_pty()
229 	tst_res(TPASS, "Read PTY %s %d", ldisc->name, ptmx);  in do_pty()
245 static void open_netdev(const struct ldisc_info *ldisc)  in open_netdev()  argument
255 	ifreq.ifr_mtu = ldisc->mtu;  in open_netdev()
260 	tst_res(TINFO, "Netdev MTU is %d (we set %d)", mtu, ldisc->mtu);  in open_netdev()
280 static void check_data(const struct ldisc_info *ldisc,  in check_data()  argument
289 	if (ldisc->n == N_SLCAN) {  in check_data()
375 static void read_netdev(const struct ldisc_info *ldisc)  in read_netdev()  argument
380 	switch (ldisc->n) {  in read_netdev()
394 		tst_brk(TBROK | TTERRNO, "Read netdev %s %d (1)", ldisc->name, sk);  in read_netdev()
395 	check_data(ldisc, data, plen);  in read_netdev()
396 	tst_res(TPASS, "Read netdev %s %d (1)", ldisc->name, sk);  in read_netdev()
400 		tst_brk(TBROK | TTERRNO, "Read netdev %s %d (2)", ldisc->name, sk);  in read_netdev()
401 	check_data(ldisc, data, plen);  in read_netdev()
402 	tst_res(TPASS, "Read netdev %s %d (2)", ldisc->name, sk);  in read_netdev()
406 		tst_brk(TBROK | TTERRNO, "Write netdev %s %d", ldisc->name, sk);  in read_netdev()
408 	tst_res(TPASS, "Write netdev %s %d", ldisc->name, sk);  in read_netdev()
416 		check_data(ldisc, data, rlen);  in read_netdev()
427 	struct ldisc_info *ldisc = &ldiscs[n];  in do_test()  local
429 	if (open_pty(ldisc))  in do_test()
432 	open_netdev(ldisc);  in do_test()
435 		read_netdev(ldisc);  in do_test()
440 		do_pty(ldisc);  in do_test()