^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * proc.c - procfs support for Protocol family CAN core module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * notice, this list of conditions and the following disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 2. Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * notice, this list of conditions and the following disclaimer in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * documentation and/or other materials provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * 3. Neither the name of Volkswagen nor the names of its contributors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * may be used to endorse or promote products derived from this software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Alternatively, provided that this notice is retained in full, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * software may be distributed under the terms of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Public License ("GPL") version 2, in which case the provisions of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * GPL apply INSTEAD OF those given above.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * The provided data structures and external interfaces from this code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * are not restricted to be used by modules with a GPL compatible license.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/can/can-ml.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/can/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "af_can.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * proc filenames for the PF_CAN core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define CAN_PROC_STATS "stats"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define CAN_PROC_RESET_STATS "reset_stats"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define CAN_PROC_RCVLIST_ALL "rcvlist_all"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define CAN_PROC_RCVLIST_FIL "rcvlist_fil"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define CAN_PROC_RCVLIST_INV "rcvlist_inv"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define CAN_PROC_RCVLIST_SFF "rcvlist_sff"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define CAN_PROC_RCVLIST_EFF "rcvlist_eff"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define CAN_PROC_RCVLIST_ERR "rcvlist_err"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int user_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static const char rx_list_name[][8] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) [RX_ERR] = "rx_err",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) [RX_ALL] = "rx_all",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) [RX_FIL] = "rx_fil",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) [RX_INV] = "rx_inv",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * af_can statistics stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void can_init_stats(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct can_pkg_stats *pkg_stats = net->can.pkg_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * This memset function is called from a timer context (when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * can_stattimer is active which is the default) OR in a process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * context (reading the proc_fs when can_stattimer is disabled).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) memset(pkg_stats, 0, sizeof(struct can_pkg_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) pkg_stats->jiffies_init = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) rcv_lists_stats->stats_reset++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (user_reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) user_reset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) rcv_lists_stats->user_reset++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static unsigned long calc_rate(unsigned long oldjif, unsigned long newjif,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned long count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) unsigned long rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (oldjif == newjif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* see can_stat_update() - this should NEVER happen! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (count > (ULONG_MAX / HZ)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) printk(KERN_ERR "can: calc_rate: count exceeded! %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return 99999999;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) rate = (count * HZ) / (newjif - oldjif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) void can_stat_update(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct net *net = from_timer(net, t, can.stattimer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct can_pkg_stats *pkg_stats = net->can.pkg_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) unsigned long j = jiffies; /* snapshot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* restart counting in timer context on user request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (user_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* restart counting on jiffies overflow */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (j < pkg_stats->jiffies_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* prevent overflow in calc_rate() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (pkg_stats->rx_frames > (ULONG_MAX / HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* prevent overflow in calc_rate() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (pkg_stats->tx_frames > (ULONG_MAX / HZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* matches overflow - very improbable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (pkg_stats->matches > (ULONG_MAX / 100))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* calc total values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (pkg_stats->rx_frames)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) pkg_stats->total_rx_match_ratio = (pkg_stats->matches * 100) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) pkg_stats->rx_frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) pkg_stats->total_tx_rate = calc_rate(pkg_stats->jiffies_init, j,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) pkg_stats->tx_frames);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) pkg_stats->total_rx_rate = calc_rate(pkg_stats->jiffies_init, j,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) pkg_stats->rx_frames);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* calc current values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (pkg_stats->rx_frames_delta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) pkg_stats->current_rx_match_ratio =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) (pkg_stats->matches_delta * 100) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) pkg_stats->rx_frames_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) pkg_stats->current_tx_rate = calc_rate(0, HZ, pkg_stats->tx_frames_delta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) pkg_stats->current_rx_rate = calc_rate(0, HZ, pkg_stats->rx_frames_delta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /* check / update maximum values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (pkg_stats->max_tx_rate < pkg_stats->current_tx_rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) pkg_stats->max_tx_rate = pkg_stats->current_tx_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (pkg_stats->max_rx_rate < pkg_stats->current_rx_rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) pkg_stats->max_rx_rate = pkg_stats->current_rx_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (pkg_stats->max_rx_match_ratio < pkg_stats->current_rx_match_ratio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) pkg_stats->max_rx_match_ratio = pkg_stats->current_rx_match_ratio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /* clear values for 'current rate' calculation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) pkg_stats->tx_frames_delta = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) pkg_stats->rx_frames_delta = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) pkg_stats->matches_delta = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* restart timer (one second) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) mod_timer(&net->can.stattimer, round_jiffies(jiffies + HZ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * proc read functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct receiver *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) hlist_for_each_entry_rcu(r, rx_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) char *fmt = (r->can_id & CAN_EFF_FLAG)?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) " %-5s %08x %08x %pK %pK %8ld %s\n" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) " %-5s %03x %08x %pK %pK %8ld %s\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) seq_printf(m, fmt, DNAME(dev), r->can_id, r->mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) r->func, r->data, r->matches, r->ident);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static void can_print_recv_banner(struct seq_file *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * can1. 00000000 00000000 00000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * ....... 0 tp20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) seq_puts(m, " device can_id can_mask function"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) " userdata matches ident\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int can_stats_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct net *net = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct can_pkg_stats *pkg_stats = net->can.pkg_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) seq_printf(m, " %8ld transmitted frames (TXF)\n", pkg_stats->tx_frames);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) seq_printf(m, " %8ld received frames (RXF)\n", pkg_stats->rx_frames);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) seq_printf(m, " %8ld matched frames (RXMF)\n", pkg_stats->matches);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (net->can.stattimer.function == can_stat_update) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) seq_printf(m, " %8ld %% total match ratio (RXMR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) pkg_stats->total_rx_match_ratio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) seq_printf(m, " %8ld frames/s total tx rate (TXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) pkg_stats->total_tx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) seq_printf(m, " %8ld frames/s total rx rate (RXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) pkg_stats->total_rx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) seq_printf(m, " %8ld %% current match ratio (CRXMR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) pkg_stats->current_rx_match_ratio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) seq_printf(m, " %8ld frames/s current tx rate (CTXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) pkg_stats->current_tx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) seq_printf(m, " %8ld frames/s current rx rate (CRXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) pkg_stats->current_rx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) seq_printf(m, " %8ld %% max match ratio (MRXMR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) pkg_stats->max_rx_match_ratio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) seq_printf(m, " %8ld frames/s max tx rate (MTXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) pkg_stats->max_tx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) seq_printf(m, " %8ld frames/s max rx rate (MRXR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) pkg_stats->max_rx_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) seq_printf(m, " %8ld current receive list entries (CRCV)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) rcv_lists_stats->rcv_entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) seq_printf(m, " %8ld maximum receive list entries (MRCV)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) rcv_lists_stats->rcv_entries_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (rcv_lists_stats->stats_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) seq_printf(m, "\n %8ld statistic resets (STR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) rcv_lists_stats->stats_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (rcv_lists_stats->user_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) seq_printf(m, " %8ld user statistic resets (USTR)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) rcv_lists_stats->user_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int can_reset_stats_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct net *net = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct can_pkg_stats *pkg_stats = net->can.pkg_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) user_reset = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (net->can.stattimer.function == can_stat_update) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) seq_printf(m, "Scheduled statistic reset #%ld.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) rcv_lists_stats->stats_reset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (pkg_stats->jiffies_init != jiffies)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) can_init_stats(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) seq_printf(m, "Performed statistic reset #%ld.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) rcv_lists_stats->stats_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static inline void can_rcvlist_proc_show_one(struct seq_file *m, int idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct can_dev_rcv_lists *dev_rcv_lists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (!hlist_empty(&dev_rcv_lists->rx[idx])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) can_print_recv_banner(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) can_print_rcvlist(m, &dev_rcv_lists->rx[idx], dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) seq_printf(m, " (%s: no entry)\n", DNAME(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static int can_rcvlist_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) /* double cast to prevent GCC warning */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) int idx = (int)(long)PDE_DATA(m->file->f_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct can_dev_rcv_lists *dev_rcv_lists;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct net *net = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) seq_printf(m, "\nreceive list '%s':\n", rx_list_name[idx]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* receive list for 'all' CAN devices (dev == NULL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) dev_rcv_lists = net->can.rx_alldev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) can_rcvlist_proc_show_one(m, idx, NULL, dev_rcv_lists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /* receive list for registered CAN devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) for_each_netdev_rcu(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct can_ml_priv *can_ml = can_get_ml_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (can_ml)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) can_rcvlist_proc_show_one(m, idx, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) &can_ml->dev_rcv_lists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static inline void can_rcvlist_proc_show_array(struct seq_file *m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct hlist_head *rcv_array,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) unsigned int rcv_array_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) int all_empty = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) /* check whether at least one list is non-empty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) for (i = 0; i < rcv_array_sz; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (!hlist_empty(&rcv_array[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) all_empty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (!all_empty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) can_print_recv_banner(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) for (i = 0; i < rcv_array_sz; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (!hlist_empty(&rcv_array[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) can_print_rcvlist(m, &rcv_array[i], dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) seq_printf(m, " (%s: no entry)\n", DNAME(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct can_dev_rcv_lists *dev_rcv_lists;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct net *net = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) /* RX_SFF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) seq_puts(m, "\nreceive list 'rx_sff':\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) /* sff receive list for 'all' CAN devices (dev == NULL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) dev_rcv_lists = net->can.rx_alldev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) can_rcvlist_proc_show_array(m, NULL, dev_rcv_lists->rx_sff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) ARRAY_SIZE(dev_rcv_lists->rx_sff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* sff receive list for registered CAN devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) for_each_netdev_rcu(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) struct can_ml_priv *can_ml = can_get_ml_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (can_ml) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) dev_rcv_lists = &can_ml->dev_rcv_lists;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) can_rcvlist_proc_show_array(m, dev, dev_rcv_lists->rx_sff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) ARRAY_SIZE(dev_rcv_lists->rx_sff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct can_dev_rcv_lists *dev_rcv_lists;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct net *net = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* RX_EFF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) seq_puts(m, "\nreceive list 'rx_eff':\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* eff receive list for 'all' CAN devices (dev == NULL) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) dev_rcv_lists = net->can.rx_alldev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) can_rcvlist_proc_show_array(m, NULL, dev_rcv_lists->rx_eff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ARRAY_SIZE(dev_rcv_lists->rx_eff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /* eff receive list for registered CAN devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) for_each_netdev_rcu(net, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct can_ml_priv *can_ml = can_get_ml_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (can_ml) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) dev_rcv_lists = &can_ml->dev_rcv_lists;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) can_rcvlist_proc_show_array(m, dev, dev_rcv_lists->rx_eff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ARRAY_SIZE(dev_rcv_lists->rx_eff));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) seq_putc(m, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) * can_init_proc - create main CAN proc directory and procfs entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) void can_init_proc(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) /* create /proc/net/can directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) net->can.proc_dir = proc_net_mkdir(net, "can", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!net->can.proc_dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) printk(KERN_INFO "can: failed to create /proc/net/can . "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) "CONFIG_PROC_FS missing?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /* own procfs entries from the AF_CAN core */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) net->can.pde_stats = proc_create_net_single(CAN_PROC_STATS, 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) net->can.proc_dir, can_stats_proc_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) net->can.pde_reset_stats = proc_create_net_single(CAN_PROC_RESET_STATS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 0644, net->can.proc_dir, can_reset_stats_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) net->can.pde_rcvlist_err = proc_create_net_single(CAN_PROC_RCVLIST_ERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 0644, net->can.proc_dir, can_rcvlist_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) (void *)RX_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) net->can.pde_rcvlist_all = proc_create_net_single(CAN_PROC_RCVLIST_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 0644, net->can.proc_dir, can_rcvlist_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) (void *)RX_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) net->can.pde_rcvlist_fil = proc_create_net_single(CAN_PROC_RCVLIST_FIL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 0644, net->can.proc_dir, can_rcvlist_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) (void *)RX_FIL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) net->can.pde_rcvlist_inv = proc_create_net_single(CAN_PROC_RCVLIST_INV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 0644, net->can.proc_dir, can_rcvlist_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) (void *)RX_INV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) net->can.pde_rcvlist_eff = proc_create_net_single(CAN_PROC_RCVLIST_EFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 0644, net->can.proc_dir, can_rcvlist_eff_proc_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) net->can.pde_rcvlist_sff = proc_create_net_single(CAN_PROC_RCVLIST_SFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 0644, net->can.proc_dir, can_rcvlist_sff_proc_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * can_remove_proc - remove procfs entries and main CAN proc directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) void can_remove_proc(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (!net->can.proc_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (net->can.pde_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) remove_proc_entry(CAN_PROC_STATS, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (net->can.pde_reset_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) remove_proc_entry(CAN_PROC_RESET_STATS, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (net->can.pde_rcvlist_err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) remove_proc_entry(CAN_PROC_RCVLIST_ERR, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (net->can.pde_rcvlist_all)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) remove_proc_entry(CAN_PROC_RCVLIST_ALL, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (net->can.pde_rcvlist_fil)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) remove_proc_entry(CAN_PROC_RCVLIST_FIL, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (net->can.pde_rcvlist_inv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) remove_proc_entry(CAN_PROC_RCVLIST_INV, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (net->can.pde_rcvlist_eff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) remove_proc_entry(CAN_PROC_RCVLIST_EFF, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (net->can.pde_rcvlist_sff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) remove_proc_entry(CAN_PROC_RCVLIST_SFF, net->can.proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) remove_proc_entry("can", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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