svn commit: r362877 - stable/12/sys/netinet

[Michael Tuexen]

Author: tuexen
Date: Wed Jul  1 22:00:35 2020
New Revision: 362877
URL: https://svnweb.freebsd.org/changeset/base/362877

Log:
  MFC r356660:
  Fix division by zero issue.
  
  Thanks to Stas Denisov for reporting the issue for the userland stack
  and providing a fix.

Modified:
  stable/12/sys/netinet/sctp_cc_functions.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/netinet/sctp_cc_functions.c
==============================================================================
--- stable/12/sys/netinet/sctp_cc_functions.c	Wed Jul  1 21:59:18 2020	(r362876)
+++ stable/12/sys/netinet/sctp_cc_functions.c	Wed Jul  1 22:00:35 2020	(r362877)
@@ -1876,7 +1876,7 @@ htcp_cong_time(struct htcp *ca)
 static inline uint32_t
 htcp_ccount(struct htcp *ca)
 {
-	return (htcp_cong_time(ca) / ca->minRTT);
+	return (ca->minRTT == 0 ? htcp_cong_time(ca) : htcp_cong_time(ca) / ca->minRTT);
 }
 
 static inline void