selftests: net: Fix printf format warnings on arm

Fix printf format warnings on arm (and other 32bit arch).

- udpgso.c and udpgso_bench_tx use %lu for size_t but it
should be unsigned long long on 32bit arch.

- so_txtime.c uses %ld for int64_t, but it should be
unsigned long long on 32bit arch.

Signed-off-by: Masami Hiramatsu <[e-mail]>
Cc: Willem de Bruijn <[e-mail]>
Cc: David S. Miller <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/net/so_txtime.c

···
 	tstop = (gettime_ns() - glob_tstart) / 1000;
 	texpect = ts->delay_us >= 0 ? ts->delay_us : 0;
 
-	fprintf(stderr, "payload:%c delay:%ld expected:%ld (us)\n",
-			rbuf[0], tstop, texpect);
+	fprintf(stderr, "payload:%c delay:%lld expected:%lld (us)\n",
+			rbuf[0], (long long)tstop, (long long)texpect);
 
 	if (rbuf[0] != ts->data)
 		error(1, 0, "payload mismatch. expected %c", ts->data);

tools/testing/selftests/net/udpgso.c

···
 	if (ret == -1)
 		error(1, errno, "sendmsg");
 	if (ret != msg->msg_iov->iov_len)
-		error(1, 0, "sendto: %d != %lu", ret, msg->msg_iov->iov_len);
+		error(1, 0, "sendto: %d != %llu", ret,
+			(unsigned long long)msg->msg_iov->iov_len);
 	if (msg->msg_flags)
 		error(1, 0, "sendmsg: return flags 0x%x\n", msg->msg_flags);
 

tools/testing/selftests/net/udpgso_bench_tx.c

···
 	if (ret == -1)
 		error(1, errno, "sendmsg");
 	if (ret != iov.iov_len)
-		error(1, 0, "sendmsg: %u != %lu\n", ret, iov.iov_len);
+		error(1, 0, "sendmsg: %u != %llu\n", ret,
+			(unsigned long long)iov.iov_len);
 
 	return 1;
 }