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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Current File : //usr/include/linux/sonet.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* sonet.h - SONET/SHD physical layer control */
 
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
 

#ifndef LINUX_SONET_H
#define LINUX_SONET_H

#define __SONET_ITEMS \
    __HANDLE_ITEM(section_bip); 	/* section parity errors (B1) */ \
    __HANDLE_ITEM(line_bip);		/* line parity errors (B2) */ \
    __HANDLE_ITEM(path_bip);		/* path parity errors (B3) */ \
    __HANDLE_ITEM(line_febe);		/* line parity errors at remote */ \
    __HANDLE_ITEM(path_febe);		/* path parity errors at remote */ \
    __HANDLE_ITEM(corr_hcs);		/* correctable header errors */ \
    __HANDLE_ITEM(uncorr_hcs);		/* uncorrectable header errors */ \
    __HANDLE_ITEM(tx_cells);		/* cells sent */ \
    __HANDLE_ITEM(rx_cells);		/* cells received */

struct sonet_stats {
#define __HANDLE_ITEM(i) int i
	__SONET_ITEMS
#undef __HANDLE_ITEM
} __attribute__ ((packed));


#define SONET_GETSTAT	_IOR('a',ATMIOC_PHYTYP,struct sonet_stats)
					/* get statistics */
#define SONET_GETSTATZ	_IOR('a',ATMIOC_PHYTYP+1,struct sonet_stats)
					/* ... and zero counters */
#define SONET_SETDIAG	_IOWR('a',ATMIOC_PHYTYP+2,int)
					/* set error insertion */
#define SONET_CLRDIAG	_IOWR('a',ATMIOC_PHYTYP+3,int)
					/* clear error insertion */
#define SONET_GETDIAG	_IOR('a',ATMIOC_PHYTYP+4,int)
					/* query error insertion */
#define SONET_SETFRAMING _IOW('a',ATMIOC_PHYTYP+5,int)
					/* set framing mode (SONET/SDH) */
#define SONET_GETFRAMING _IOR('a',ATMIOC_PHYTYP+6,int)
					/* get framing mode */
#define SONET_GETFRSENSE _IOR('a',ATMIOC_PHYTYP+7, \
  unsigned char[SONET_FRSENSE_SIZE])	/* get framing sense information */

#define SONET_INS_SBIP	  1		/* section BIP */
#define SONET_INS_LBIP	  2		/* line BIP */
#define SONET_INS_PBIP	  4		/* path BIP */
#define SONET_INS_FRAME	  8		/* out of frame */
#define SONET_INS_LOS	 16		/* set line to zero */
#define SONET_INS_LAIS	 32		/* line alarm indication signal */
#define SONET_INS_PAIS	 64		/* path alarm indication signal */
#define SONET_INS_HCS	128		/* insert HCS error */

#define SONET_FRAME_SONET 0		/* SONET STS-3 framing */
#define SONET_FRAME_SDH   1		/* SDH STM-1 framing */

#define SONET_FRSENSE_SIZE 6		/* C1[3],H1[3] (0xff for unknown) */



#endif /* LINUX_SONET_H */

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