diff options
Diffstat (limited to 'include/net/red.h')
| -rw-r--r-- | include/net/red.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/include/net/red.h b/include/net/red.h index 24606b22d01e..ef715a16cce4 100644 --- a/include/net/red.h +++ b/include/net/red.h @@ -155,9 +155,10 @@ static inline u32 red_maxp(u8 Plog) static inline void red_set_parms(struct red_parms *p, u32 qth_min, u32 qth_max, u8 Wlog, u8 Plog, - u8 Scell_log, u8 *stab) + u8 Scell_log, u8 *stab, u32 max_P) { int delta = qth_max - qth_min; + u32 max_p_delta; /* Reset average queue length, the value is strictly bound * to the parameters below, reseting hurts a bit but leaving @@ -173,10 +174,14 @@ static inline void red_set_parms(struct red_parms *p, if (delta < 0) delta = 1; p->qth_delta = delta; - p->max_P = red_maxp(Plog); - p->max_P *= delta; /* max_P = (qth_max-qth_min)/2^Plog */ - - p->max_P_reciprocal = reciprocal_value(p->max_P / delta); + if (!max_P) { + max_P = red_maxp(Plog); + max_P *= delta; /* max_P = (qth_max - qth_min)/2^Plog */ + } + p->max_P = max_P; + max_p_delta = max_P / delta; + max_p_delta = max(max_p_delta, 1U); + p->max_P_reciprocal = reciprocal_value(max_p_delta); /* RED Adaptative target : * [min_th + 0.4*(min_th - max_th), @@ -380,6 +385,7 @@ static inline void red_adaptative_algo(struct red_parms *p) p->max_P = (p->max_P/10)*9; /* maxp = maxp * Beta */ max_p_delta = DIV_ROUND_CLOSEST(p->max_P, p->qth_delta); + max_p_delta = max(max_p_delta, 1U); p->max_P_reciprocal = reciprocal_value(max_p_delta); } #endif |