/* * Copyright (C) 2008 Felix Fietkau * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Based on minstrel.c: * Copyright (C) 2005-2007 Derek Smithies * Sponsored by Indranet Technologies Ltd * * Based on sample.c: * Copyright (c) 2005 John Bicket * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGES. */ #include #include #include #include #include #include #include #include #include "rc80211_minstrel.h" ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos) { struct minstrel_debugfs_info *ms; ms = file->private_data; return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len); } int minstrel_stats_release(struct inode *inode, struct file *file) { kfree(file->private_data); return 0; } 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, 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] [avg(tp) avg(prob) sd(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; unsigned int prob_ewmsd; *(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); eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); prob_ewmsd = minstrel_get_ewmsd10(mrs); p += sprintf(p, "%4u.%1u %4u.%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, prob_ewmsd / 10, prob_ewmsd % 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; } static const struct file_operations minstrel_stat_fops = { .owner = THIS_MODULE, .open = minstrel_stats_open, .read = minstrel_stats_read, .release = minstrel_stats_release, .llseek = default_llseek, }; 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, 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; unsigned int prob_ewmsd; 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); eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); prob_ewmsd = minstrel_get_ewmsd10(mrs); p += sprintf(p, "%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, prob_ewmsd / 10, prob_ewmsd % 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; } static const struct file_operations minstrel_stat_csv_fops = { .owner = THIS_MODULE, .open = minstrel_stats_csv_open, .read = minstrel_stats_read, .release = minstrel_stats_release, .llseek = default_llseek, }; void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir) { struct minstrel_sta_info *mi = priv_sta; mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi, &minstrel_stat_fops); mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, dir, mi, &minstrel_stat_csv_fops); } void minstrel_remove_sta_debugfs(void *priv, void *priv_sta) { struct minstrel_sta_info *mi = priv_sta; debugfs_remove(mi->dbg_stats); debugfs_remove(mi->dbg_stats_csv); } happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/mpls/Makefile')