int minstrel_stats_csv_open(struct inode *inode, struct file *file) { struct minstrel_sta_info *mi = inode->i_private; struct minstrel_debugfs_info *ms; unsigned int i, tp_max, tp_avg, prob, eprob; char *p; ms = kmalloc(2048, GFP_KERNEL); if (!ms) return -ENOMEM; file->private_data = ms; p = ms->buf; for (i = 0; i < mi->n_rates; i++) { struct minstrel_rate *mr = &mi->r[i]; struct minstrel_rate_stats *mrs = &mi->r[i].stats; p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : "")); p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : "")); p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : "")); p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : "")); p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : "")); p += sprintf(p, ",%u%s", mr->bitrate / 2, (mr->bitrate & 1 ? ".5," : ",")); p += sprintf(p, "%u,", i); p += sprintf(p, "%u,",mr->perfect_tx_time); tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100)); tp_avg = minstrel_get_tp_avg(mr, mrs->prob_ewma); prob = MINSTREL_TRUNC(mrs->cur_prob * 1000); eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u.%u,%u,%u,%u," "%llu,%llu,%d,%d\n", tp_max / 10, tp_max % 10, tp_avg / 10, tp_avg % 10, eprob / 10, eprob % 10, mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10, prob / 10, prob % 10, mrs->retry_count, mrs->last_success, mrs->last_attempts, (unsigned long long)mrs->succ_hist, (unsigned long long)mrs->att_hist, mi->total_packets - mi->sample_packets, mi->sample_packets); } ms->len = p - ms->buf; WARN_ON(ms->len + sizeof(*ms) > 2048); return 0; }
/* find & sort topmost throughput rates */ static inline void minstrel_sort_best_tp_rates(struct minstrel_sta_info *mi, int i, u8 *tp_list) { int j; struct minstrel_rate_stats *tmp_mrs; struct minstrel_rate_stats *cur_mrs = &mi->r[i].stats; for (j = MAX_THR_RATES; j > 0; --j) { tmp_mrs = &mi->r[tp_list[j - 1]].stats; if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_ewma) <= minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_ewma)) break; } if (j < MAX_THR_RATES - 1) memmove(&tp_list[j + 1], &tp_list[j], MAX_THR_RATES - (j + 1)); if (j < MAX_THR_RATES) tp_list[j] = i; }
int minstrel_stats_open(struct inode *inode, struct file *file) { struct minstrel_sta_info *mi = inode->i_private; struct minstrel_debugfs_info *ms; unsigned int i, tp_max, tp_avg, prob, eprob; char *p; ms = kmalloc(2048, GFP_KERNEL); if (!ms) return -ENOMEM; file->private_data = ms; p = ms->buf; p += sprintf(p, "\n"); p += sprintf(p, "best __________rate_________ ______" "statistics______ ________last_______ " "______sum-of________\n"); p += sprintf(p, "rate [name idx airtime max_tp] [ ø(tp) ø(prob) " "sd(prob)] [prob.|retry|suc|att] " "[#success | #attempts]\n"); for (i = 0; i < mi->n_rates; i++) { struct minstrel_rate *mr = &mi->r[i]; struct minstrel_rate_stats *mrs = &mi->r[i].stats; *(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' '; *(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' '; *(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' '; *(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' '; *(p++) = (i == mi->max_prob_rate) ? 'P' : ' '; p += sprintf(p, " %3u%s ", mr->bitrate / 2, (mr->bitrate & 1 ? ".5" : " ")); p += sprintf(p, "%3u ", i); p += sprintf(p, "%6u ", mr->perfect_tx_time); tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100)); tp_avg = minstrel_get_tp_avg(mr, mrs->prob_ewma); prob = MINSTREL_TRUNC(mrs->cur_prob * 1000); eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u %3u.%1u" " %3u.%1u %3u %3u %-3u " "%9llu %-9llu\n", tp_max / 10, tp_max % 10, tp_avg / 10, tp_avg % 10, eprob / 10, eprob % 10, mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10, prob / 10, prob % 10, mrs->retry_count, mrs->last_success, mrs->last_attempts, (unsigned long long)mrs->succ_hist, (unsigned long long)mrs->att_hist); } p += sprintf(p, "\nTotal packet count:: ideal %d " "lookaround %d\n\n", mi->total_packets - mi->sample_packets, mi->sample_packets); ms->len = p - ms->buf; WARN_ON(ms->len + sizeof(*ms) > 2048); return 0; }