net80211: fix possible overflow in IEEE80211_TU_TO_TICKS()
For hz=1000 any number, greater than 4194 causes integer overflow; this change casts the number to uint64_t before operating with it. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D5268
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=296393
@ -85,7 +85,7 @@
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#define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
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#define IEEE80211_TU_TO_MS(x) (((x) * 1024) / 1000)
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/* XXX TODO: cap this at 1, in case hz is not 1000 */
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#define IEEE80211_TU_TO_TICKS(x)(((x) * 1024 * hz) / (1000 * 1000))
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#define IEEE80211_TU_TO_TICKS(x)(((uint64_t)(x) * 1024 * hz) / (1000 * 1000))
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/*
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* 802.11 control state is split into a common portion that maps
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