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authorYan Zheng <yanzheng@21cn.com>2005-10-29 00:02:32 +0800
committerArnaldo Carvalho de Melo <acme@mandriva.com>2005-10-28 16:35:18 -0200
commitf12baeab9d65e2fe1b43b09b666f5efcb81b9369 (patch)
tree88e06b93cad95fef0ebb4a60d2b195884fe79d4f /drivers/input/keyboard/xtkbd.c
parente89e9cf539a28df7d0eb1d0a545368e9920b34ac (diff)
[MCAST] IPv6: Fix algorithm to compute Querier's Query Interval
5.1.3. Maximum Response Code The Maximum Response Code field specifies the maximum time allowed before sending a responding Report. The actual time allowed, called the Maximum Response Delay, is represented in units of milliseconds, and is derived from the Maximum Response Code as follows: If Maximum Response Code < 32768, Maximum Response Delay = Maximum Response Code If Maximum Response Code >=32768, Maximum Response Code represents a floating-point value as follows: 0 1 2 3 4 5 6 7 8 9 A B C D E F +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |1| exp | mant | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Maximum Response Delay = (mant | 0x1000) << (exp+3) 5.1.9. QQIC (Querier's Query Interval Code) The Querier's Query Interval Code field specifies the [Query Interval] used by the Querier. The actual interval, called the Querier's Query Interval (QQI), is represented in units of seconds, and is derived from the Querier's Query Interval Code as follows: If QQIC < 128, QQI = QQIC If QQIC >= 128, QQIC represents a floating-point value as follows: 0 1 2 3 4 5 6 7 +-+-+-+-+-+-+-+-+ |1| exp | mant | +-+-+-+-+-+-+-+-+ QQI = (mant | 0x10) << (exp + 3) -- rfc3810 #define MLDV2_QQIC(value) MLDV2_EXP(0x80, 4, 3, value) #define MLDV2_MRC(value) MLDV2_EXP(0x8000, 12, 3, value) Above macro are defined in mcast.c. but 1 << 4 == 0x10 and 1 << 12 == 0x1000. So the result computed by original Macro is larger. Signed-off-by: Yan Zheng <yanzheng@21cn.com> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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