static int minstrel_ht_stats_open(struct inode *inode, struct file *file) { struct minstrel_ht_sta_priv *msp = inode->i_private; struct minstrel_ht_sta *mi = &msp->ht; struct minstrel_debugfs_info *ms; unsigned int i; int ret; char *p; if (!msp->is_ht) { inode->i_private = &msp->legacy; ret = minstrel_stats_open(inode, file); inode->i_private = msp; return ret; } ms = kmalloc(32768, 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, "mode guard # rate [name idx airtime max_tp] " "[ ø(tp) ø(prob) sd(prob)] [prob.|retry|suc|att] [#success | " "#attempts]\n"); p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p); for (i = 0; i < MINSTREL_CCK_GROUP; i++) p = minstrel_ht_stats_dump(mi, i, p); for (i++; i < ARRAY_SIZE(mi->groups); i++) p = minstrel_ht_stats_dump(mi, i, p); p += sprintf(p, "\nTotal packet count:: ideal %d " "lookaround %d\n", max(0, (int) mi->total_packets - (int) mi->sample_packets), mi->sample_packets); p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n", MINSTREL_TRUNC(mi->avg_ampdu_len), MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); ms->len = p - ms->buf; WARN_ON(ms->len + sizeof(*ms) > 32768); return nonseekable_open(inode, file); }
static int minstrel_ht_stats_open(struct inode *inode, struct file *file) { struct minstrel_ht_sta_priv *msp = inode->i_private; struct minstrel_ht_sta *mi = &msp->ht; struct minstrel_debugfs_info *ms; unsigned int i; unsigned int max_mcs = MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS; char *p; int ret; if (!msp->is_ht) { inode->i_private = &msp->legacy; ret = minstrel_stats_open(inode, file); inode->i_private = msp; return ret; } ms = kmalloc(sizeof(*ms) + 8192, GFP_KERNEL); if (!ms) return -ENOMEM; file->private_data = ms; p = ms->buf; p += sprintf(p, "type rate throughput ewma prob " "this prob retry this succ/attempt success attempts\n"); p = minstrel_ht_stats_dump(mi, max_mcs, p); for (i = 0; i < max_mcs; i++) p = minstrel_ht_stats_dump(mi, i, p); p += sprintf(p, "\nTotal packet count:: ideal %d " "lookaround %d\n", max(0, (int) mi->total_packets - (int) mi->sample_packets), mi->sample_packets); p += sprintf(p, "Average A-MPDU length: %d.%d\n", MINSTREL_TRUNC(mi->avg_ampdu_len), MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); ms->len = p - ms->buf; return nonseekable_open(inode, file); }