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-rw-r--r--net/dccp/ccids/ccid3.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h
index da0ca3c..3fa0f69 100644
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -51,6 +51,16 @@
/* Parameter t_mbi from [RFC 3448, 4.3]: backoff interval in seconds */
#define TFRC_T_MBI 64
+/* What we think is a reasonable upper limit on RTT values */
+#define CCID3_SANE_RTT_MAX (4 * USEC_PER_SEC)
+
+#define CCID3_RTT_SANITY_CHECK(rtt) do { \
+ if (rtt > CCID3_SANE_RTT_MAX) { \
+ DCCP_CRIT("RTT (%ld) too large, substituting %ld", \
+ rtt, CCID3_SANE_RTT_MAX); \
+ rtt = CCID3_SANE_RTT_MAX; \
+ } } while (0)
+
enum ccid3_options {
TFRC_OPT_LOSS_EVENT_RATE = 192,
TFRC_OPT_LOSS_INTERVALS = 193,
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