// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) /* * proc.c - procfs support for Protocol family CAN core module * * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * 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. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Volkswagen nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * Alternatively, provided that this notice is retained in full, this * software may be distributed under the terms of the GNU General * Public License ("GPL") version 2, in which case the provisions of the * GPL apply INSTEAD OF those given above. * * The provided data structures and external interfaces from this code * are not restricted to be used by modules with a GPL compatible license. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 * DAMAGE. * */ #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/list.h> #include <linux/rcupdate.h> #include <linux/if_arp.h> #include <linux/can/can-ml.h> #include <linux/can/core.h> #include "af_can.h" /* * proc filenames for the PF_CAN core */ #define CAN_PROC_STATS … #define CAN_PROC_RESET_STATS … #define CAN_PROC_RCVLIST_ALL … #define CAN_PROC_RCVLIST_FIL … #define CAN_PROC_RCVLIST_INV … #define CAN_PROC_RCVLIST_SFF … #define CAN_PROC_RCVLIST_EFF … #define CAN_PROC_RCVLIST_ERR … static int user_reset; static const char rx_list_name[][8] = …; /* * af_can statistics stuff */ static void can_init_stats(struct net *net) { … } static unsigned long calc_rate(unsigned long oldjif, unsigned long newjif, unsigned long count) { … } void can_stat_update(struct timer_list *t) { … } /* * proc read functions */ static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list, struct net_device *dev) { … } static void can_print_recv_banner(struct seq_file *m) { … } static int can_stats_proc_show(struct seq_file *m, void *v) { … } static int can_reset_stats_proc_show(struct seq_file *m, void *v) { … } static inline void can_rcvlist_proc_show_one(struct seq_file *m, int idx, struct net_device *dev, struct can_dev_rcv_lists *dev_rcv_lists) { … } static int can_rcvlist_proc_show(struct seq_file *m, void *v) { … } static inline void can_rcvlist_proc_show_array(struct seq_file *m, struct net_device *dev, struct hlist_head *rcv_array, unsigned int rcv_array_sz) { … } static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v) { … } static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v) { … } /* * can_init_proc - create main CAN proc directory and procfs entries */ void can_init_proc(struct net *net) { … } /* * can_remove_proc - remove procfs entries and main CAN proc directory */ void can_remove_proc(struct net *net) { … }
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