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de1ea81e28
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13729 3c298f89-4303-0410-b956-a3cf2f4a3e73
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* siit.h -- definitions for the SIIT module
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*
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*
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*/
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/*
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* Constants
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*/
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/* SIIT_ETH control the name of SIIT interface:
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* 0 - interface name is siit0,
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* 1 - interface name is ethX.
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*/
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#define SIIT_ETH 0
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#define BUFF_SIZE 4096
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#define FRAG_BUFF_SIZE 1232 /* IPv6 max fragment size without IPv6 header
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* to fragmanet IPv4 if result IPv6 packet will be > 1280
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*/
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#define TRANSLATED_PREFIX 0x0000ffff /* third byte in IPv4-translated addr prefix */
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#define MAPPED_PREFIX 0x0000ffff /* third byte in IPv4-mapped addr prefix */
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#define IP4_IP6_HDR_DIFF 20 /* diffirence between IPv4 and IPv6 headers */
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#define IP6_FRAGMENT_SIZE 8 /* size of Fragment Header */
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/* IPv6 header fields masks */
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#define IP6F_OFF_MASK 0xfff8 /* mask out offset from frag_off */
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#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in frag_off */
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#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
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/*
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* Macros to help debugging
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*/
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#undef PDEBUG /* undef it, just in case */
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#ifdef SIIT_DEBUG
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# ifdef __KERNEL__
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/* This one if debugging is on, and kernel space */
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# define PDEBUG(fmt, args...) printk(KERN_DEBUG "siit: " fmt, ## args)
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# else
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/* This one for user space */
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# define PDEBUG(fmt, args...) fprintf(stderr, fmt, ## args)
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# endif
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#else
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# define PDEBUG(fmt, args...) /* not debugging: nothing */
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#endif
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#undef PDEBUGG
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#define PDEBUGG(fmt, args...)
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