晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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/* Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _NET_IF_SHAPER_H
#define _NET_IF_SHAPER_H 1
#include <sys/types.h>
#include <stdint.h>
#include <net/if.h>
#include <sys/ioctl.h>
__BEGIN_DECLS
#define SHAPER_QLEN 10
/*
* This is a bit speed dependant (read it shouldnt be a constant!)
*
* 5 is about right for 28.8 upwards. Below that double for every
* halving of speed or so. - ie about 20 for 9600 baud.
*/
#define SHAPER_LATENCY (5 * HZ)
#define SHAPER_MAXSLIP 2
#define SHAPER_BURST (HZ / 50) /* Good for >128K then */
#define SHAPER_SET_DEV 0x0001
#define SHAPER_SET_SPEED 0x0002
#define SHAPER_GET_DEV 0x0003
#define SHAPER_GET_SPEED 0x0004
struct shaperconf
{
uint16_t ss_cmd;
union
{
char ssu_name[14];
uint32_t ssu_speed;
} ss_u;
#define ss_speed ss_u.ssu_speed
#define ss_name ss_u.ssu_name
};
__END_DECLS
#endif /* net/if_shaper.h */