package/madwifi/patches/345-minstrel_sampling.patch

   1 Index: madwifi-trunk-r3314/ath/if_ath.c
   2 ===================================================================
   3 --- madwifi-trunk-r3314.orig/ath/if_ath.c       2008-04-21 09:13:19.000000000 +0200
   4 +++ madwifi-trunk-r3314/ath/if_ath.c    2008-04-23 01:15:49.000000000 +0200
   5 @@ -8095,6 +8095,7 @@
   6                 ath_hal_setupxtxdesc(sc->sc_ah, ds, mrr.rate1, mrr.retries1,
   7                                      mrr.rate2, mrr.retries2,
   8                                      mrr.rate3, mrr.retries3);
   9 +               bf->rcflags = mrr.privflags;
  10         }
  11
  12  #ifndef ATH_SUPERG_FF
  13 Index: madwifi-trunk-r3314/ath/if_athvar.h
  14 ===================================================================
  15 --- madwifi-trunk-r3314.orig/ath/if_athvar.h    2008-04-21 09:13:19.000000000 +0200
  16 +++ madwifi-trunk-r3314/ath/if_athvar.h 2008-04-23 01:15:49.000000000 +0200
  17 @@ -446,6 +446,7 @@
  18         u_int16_t bf_flags;                             /* tx descriptor flags */
  19         u_int64_t bf_tsf;
  20         int16_t bf_channoise;
  21 +       unsigned int rcflags;
  22  #ifdef ATH_SUPERG_FF
  23         /* XXX: combine this with bf_skbaddr if it ever changes to accommodate
  24          *      multiple segments.
  25 Index: madwifi-trunk-r3314/ath_rate/minstrel/minstrel.c
  26 ===================================================================
  27 --- madwifi-trunk-r3314.orig/ath_rate/minstrel/minstrel.c       2008-04-21 09:13:19.000000000 +0200
  28 +++ madwifi-trunk-r3314/ath_rate/minstrel/minstrel.c    2008-04-23 01:15:50.000000000 +0200
  29 @@ -333,15 +333,19 @@
  30                 if (sn->static_rate_ndx >= 0) {
  31                             ndx = sn->static_rate_ndx;
  32                 } else {
  33 +                       int delta;
  34                         sn->packet_count++;
  35                         sn->random_n = (sn->a * sn->random_n) + sn->b;
  36                         offset = sn->random_n & 0xf;
  37 -                       if ((((100 * sn->sample_count) / (sn->sample_count + sn->packet_count)) < ath_lookaround_rate) && (offset < 2)) {
  38 +                       delta = (sn->packet_count * ath_lookaround_rate / 100) - sn->sample_count;
  39 +                       if ((delta > 0) && (offset < 2)) {
  40                                 sn->sample_count++;
  41                                 sn->is_sampling = 1;
  42                                 if (sn->packet_count >= 10000) {
  43                                         sn->sample_count = 0;
  44                                         sn->packet_count = 0;
  45 +                               } else if (delta > sn->num_rates * 2) {
  46 +                                       sn->sample_count += ((delta - sn->num_rates * 2) * ath_lookaround_rate) / 100;
  47                                 }
  48
  49                                 /* Don't look for slowest rate (i.e. slowest
  50 @@ -398,11 +402,14 @@
  51                 if (sn->num_rates <= 0)
  52                         return;
  53
  54 +               mrr->privflags = sn->is_sampling;
  55                 if (sn->is_sampling) {
  56                         sn->is_sampling = 0;
  57 -                       if (sn->rs_sample_rate_slower)
  58 +                       if (sn->rs_sample_rate_slower) {
  59                                 rc1 = sn->rs_sample_rate;
  60 -                       else
  61 +                               if (sn->sample_count > 0)
  62 +                                       sn->sample_count--;
  63 +                       } else
  64                                 rc1 = sn->max_tp_rate;
  65                 } else {
  66                         rc1 = sn->max_tp_rate2;
  67 @@ -525,6 +532,9 @@
  68                 if (tries <= tries1)
  69                         return;
  70
  71 +               if (bf->rcflags)
  72 +                       sn->sample_count++;
  73 +
  74                 if  (tries2 < 0)
  75                         return;
  76                 tries = tries - tries1;
  77 Index: madwifi-trunk-r3314/net80211/ieee80211_rate.h
  78 ===================================================================
  79 --- madwifi-trunk-r3314.orig/net80211/ieee80211_rate.h  2008-04-21 09:11:19.000000000 +0200
  80 +++ madwifi-trunk-r3314/net80211/ieee80211_rate.h       2008-04-21 09:13:19.000000000 +0200
  81 @@ -87,6 +87,7 @@
  82         int retries2;
  83         int rate3;
  84         int retries3;
  85 +       int privflags;
  86  };
  87
  88  struct ieee80211_rate_ops {