diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_westwood.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c index 12a2cd976e3a..edf2ee19a8ba 100644 --- a/net/ipv4/tcp_westwood.c +++ b/net/ipv4/tcp_westwood.c @@ -82,10 +82,16 @@ static inline u32 westwood_do_filter(u32 a, u32 b) return (((7 * a) + b) >> 3); } -static inline void westwood_filter(struct westwood *w, u32 delta) +static void westwood_filter(struct westwood *w, u32 delta) { - w->bw_ns_est = westwood_do_filter(w->bw_ns_est, w->bk / delta); - w->bw_est = westwood_do_filter(w->bw_est, w->bw_ns_est); + /* If the filter is empty fill it with the first sample of bandwidth */ + if (w->bw_ns_est == 0 && w->bw_est == 0) { + w->bw_ns_est = w->bk / delta; + w->bw_est = w->bw_ns_est; + } else { + w->bw_ns_est = westwood_do_filter(w->bw_ns_est, w->bk / delta); + w->bw_est = westwood_do_filter(w->bw_est, w->bw_ns_est); + } } /* |