diff options
Diffstat (limited to 'net/dccp/dccp.h')
| -rw-r--r-- | net/dccp/dccp.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index f4a5ea116e34..07dcbe73b50c 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -74,9 +74,12 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo); #define DCCP_RTO_MAX ((unsigned)(120 * HZ)) /* FIXME: using TCP value */ -/* bounds for sampled RTT values from packet exchanges (in usec) */ +/* + * RTT sampling: sanity bounds and fallback RTT value from RFC 4340, section 3.4 + */ #define DCCP_SANE_RTT_MIN 100 -#define DCCP_SANE_RTT_MAX (4 * USEC_PER_SEC) +#define DCCP_FALLBACK_RTT (USEC_PER_SEC / 5) +#define DCCP_SANE_RTT_MAX (3 * USEC_PER_SEC) /* Maximal interval between probes for local resources. */ #define DCCP_RESOURCE_PROBE_INTERVAL ((unsigned)(HZ / 2U)) |