Author: np
Date: Tue Aug 21 21:08:58 2018
New Revision: 338156
URL: https://svnweb.freebsd.org/changeset/base/338156
Log:
cxgbe(4): Avoid overflow while calculating channel rate.
Reported by: Coverity (CID 1008352)
MFC after: 1 week
Sponsored by: Chelsio Communications
Modified:
head/sys/dev/cxgbe/common/t4_hw.c
Modified: head/sys/dev/cxgbe/common/t4_hw.c
==============================================================================
--- head/sys/dev/cxgbe/common/t4_hw.c Tue Aug 21 19:28:53 2018
(r338155)
+++ head/sys/dev/cxgbe/common/t4_hw.c Tue Aug 21 21:08:58 2018
(r338156)
@@ -5770,7 +5770,7 @@ int t4_set_sched_ipg(struct adapter *adap, int sched,
*/
static u64 chan_rate(struct adapter *adap, unsigned int bytes256)
{
- u64 v = bytes256 * adap->params.vpd.cclk;
+ u64 v = (u64)bytes256 * adap->params.vpd.cclk;
return v * 62 + v / 2;
}
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