From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- net/can/proc.c | 498 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 498 insertions(+) create mode 100644 net/can/proc.c (limited to 'net/can/proc.c') diff --git a/net/can/proc.c b/net/can/proc.c new file mode 100644 index 000000000..bbce97825 --- /dev/null +++ b/net/can/proc.c @@ -0,0 +1,498 @@ +// 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 +#include +#include +#include +#include +#include +#include + +#include "af_can.h" + +/* + * proc filenames for the PF_CAN core + */ + +#define CAN_PROC_STATS "stats" +#define CAN_PROC_RESET_STATS "reset_stats" +#define CAN_PROC_RCVLIST_ALL "rcvlist_all" +#define CAN_PROC_RCVLIST_FIL "rcvlist_fil" +#define CAN_PROC_RCVLIST_INV "rcvlist_inv" +#define CAN_PROC_RCVLIST_SFF "rcvlist_sff" +#define CAN_PROC_RCVLIST_EFF "rcvlist_eff" +#define CAN_PROC_RCVLIST_ERR "rcvlist_err" + +static int user_reset; + +static const char rx_list_name[][8] = { + [RX_ERR] = "rx_err", + [RX_ALL] = "rx_all", + [RX_FIL] = "rx_fil", + [RX_INV] = "rx_inv", +}; + +/* + * af_can statistics stuff + */ + +static void can_init_stats(struct net *net) +{ + struct can_pkg_stats *pkg_stats = net->can.pkg_stats; + struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats; + /* + * This memset function is called from a timer context (when + * can_stattimer is active which is the default) OR in a process + * context (reading the proc_fs when can_stattimer is disabled). + */ + memset(pkg_stats, 0, sizeof(struct can_pkg_stats)); + pkg_stats->jiffies_init = jiffies; + + rcv_lists_stats->stats_reset++; + + if (user_reset) { + user_reset = 0; + rcv_lists_stats->user_reset++; + } +} + +static unsigned long calc_rate(unsigned long oldjif, unsigned long newjif, + unsigned long count) +{ + if (oldjif == newjif) + return 0; + + /* see can_stat_update() - this should NEVER happen! */ + if (count > (ULONG_MAX / HZ)) { + printk(KERN_ERR "can: calc_rate: count exceeded! %ld\n", + count); + return 99999999; + } + + return (count * HZ) / (newjif - oldjif); +} + +void can_stat_update(struct timer_list *t) +{ + struct net *net = from_timer(net, t, can.stattimer); + struct can_pkg_stats *pkg_stats = net->can.pkg_stats; + unsigned long j = jiffies; /* snapshot */ + + /* restart counting in timer context on user request */ + if (user_reset) + can_init_stats(net); + + /* restart counting on jiffies overflow */ + if (j < pkg_stats->jiffies_init) + can_init_stats(net); + + /* prevent overflow in calc_rate() */ + if (pkg_stats->rx_frames > (ULONG_MAX / HZ)) + can_init_stats(net); + + /* prevent overflow in calc_rate() */ + if (pkg_stats->tx_frames > (ULONG_MAX / HZ)) + can_init_stats(net); + + /* matches overflow - very improbable */ + if (pkg_stats->matches > (ULONG_MAX / 100)) + can_init_stats(net); + + /* calc total values */ + if (pkg_stats->rx_frames) + pkg_stats->total_rx_match_ratio = (pkg_stats->matches * 100) / + pkg_stats->rx_frames; + + pkg_stats->total_tx_rate = calc_rate(pkg_stats->jiffies_init, j, + pkg_stats->tx_frames); + pkg_stats->total_rx_rate = calc_rate(pkg_stats->jiffies_init, j, + pkg_stats->rx_frames); + + /* calc current values */ + if (pkg_stats->rx_frames_delta) + pkg_stats->current_rx_match_ratio = + (pkg_stats->matches_delta * 100) / + pkg_stats->rx_frames_delta; + + pkg_stats->current_tx_rate = calc_rate(0, HZ, pkg_stats->tx_frames_delta); + pkg_stats->current_rx_rate = calc_rate(0, HZ, pkg_stats->rx_frames_delta); + + /* check / update maximum values */ + if (pkg_stats->max_tx_rate < pkg_stats->current_tx_rate) + pkg_stats->max_tx_rate = pkg_stats->current_tx_rate; + + if (pkg_stats->max_rx_rate < pkg_stats->current_rx_rate) + pkg_stats->max_rx_rate = pkg_stats->current_rx_rate; + + if (pkg_stats->max_rx_match_ratio < pkg_stats->current_rx_match_ratio) + pkg_stats->max_rx_match_ratio = pkg_stats->current_rx_match_ratio; + + /* clear values for 'current rate' calculation */ + pkg_stats->tx_frames_delta = 0; + pkg_stats->rx_frames_delta = 0; + pkg_stats->matches_delta = 0; + + /* restart timer (one second) */ + mod_timer(&net->can.stattimer, round_jiffies(jiffies + HZ)); +} + +/* + * proc read functions + */ + +static void can_print_rcvlist(struct seq_file *m, struct hlist_head *rx_list, + struct net_device *dev) +{ + struct receiver *r; + + hlist_for_each_entry_rcu(r, rx_list, list) { + char *fmt = (r->can_id & CAN_EFF_FLAG)? + " %-5s %08x %08x %pK %pK %8ld %s\n" : + " %-5s %03x %08x %pK %pK %8ld %s\n"; + + seq_printf(m, fmt, DNAME(dev), r->can_id, r->mask, + r->func, r->data, r->matches, r->ident); + } +} + +static void can_print_recv_banner(struct seq_file *m) +{ + /* + * can1. 00000000 00000000 00000000 + * ....... 0 tp20 + */ + if (IS_ENABLED(CONFIG_64BIT)) + seq_puts(m, " device can_id can_mask function userdata matches ident\n"); + else + seq_puts(m, " device can_id can_mask function userdata matches ident\n"); +} + +static int can_stats_proc_show(struct seq_file *m, void *v) +{ + struct net *net = m->private; + struct can_pkg_stats *pkg_stats = net->can.pkg_stats; + struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats; + + seq_putc(m, '\n'); + seq_printf(m, " %8ld transmitted frames (TXF)\n", pkg_stats->tx_frames); + seq_printf(m, " %8ld received frames (RXF)\n", pkg_stats->rx_frames); + seq_printf(m, " %8ld matched frames (RXMF)\n", pkg_stats->matches); + + seq_putc(m, '\n'); + + if (net->can.stattimer.function == can_stat_update) { + seq_printf(m, " %8ld %% total match ratio (RXMR)\n", + pkg_stats->total_rx_match_ratio); + + seq_printf(m, " %8ld frames/s total tx rate (TXR)\n", + pkg_stats->total_tx_rate); + seq_printf(m, " %8ld frames/s total rx rate (RXR)\n", + pkg_stats->total_rx_rate); + + seq_putc(m, '\n'); + + seq_printf(m, " %8ld %% current match ratio (CRXMR)\n", + pkg_stats->current_rx_match_ratio); + + seq_printf(m, " %8ld frames/s current tx rate (CTXR)\n", + pkg_stats->current_tx_rate); + seq_printf(m, " %8ld frames/s current rx rate (CRXR)\n", + pkg_stats->current_rx_rate); + + seq_putc(m, '\n'); + + seq_printf(m, " %8ld %% max match ratio (MRXMR)\n", + pkg_stats->max_rx_match_ratio); + + seq_printf(m, " %8ld frames/s max tx rate (MTXR)\n", + pkg_stats->max_tx_rate); + seq_printf(m, " %8ld frames/s max rx rate (MRXR)\n", + pkg_stats->max_rx_rate); + + seq_putc(m, '\n'); + } + + seq_printf(m, " %8ld current receive list entries (CRCV)\n", + rcv_lists_stats->rcv_entries); + seq_printf(m, " %8ld maximum receive list entries (MRCV)\n", + rcv_lists_stats->rcv_entries_max); + + if (rcv_lists_stats->stats_reset) + seq_printf(m, "\n %8ld statistic resets (STR)\n", + rcv_lists_stats->stats_reset); + + if (rcv_lists_stats->user_reset) + seq_printf(m, " %8ld user statistic resets (USTR)\n", + rcv_lists_stats->user_reset); + + seq_putc(m, '\n'); + return 0; +} + +static int can_reset_stats_proc_show(struct seq_file *m, void *v) +{ + struct net *net = m->private; + struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats; + struct can_pkg_stats *pkg_stats = net->can.pkg_stats; + + user_reset = 1; + + if (net->can.stattimer.function == can_stat_update) { + seq_printf(m, "Scheduled statistic reset #%ld.\n", + rcv_lists_stats->stats_reset + 1); + } else { + if (pkg_stats->jiffies_init != jiffies) + can_init_stats(net); + + seq_printf(m, "Performed statistic reset #%ld.\n", + rcv_lists_stats->stats_reset); + } + return 0; +} + +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) +{ + if (!hlist_empty(&dev_rcv_lists->rx[idx])) { + can_print_recv_banner(m); + can_print_rcvlist(m, &dev_rcv_lists->rx[idx], dev); + } else + seq_printf(m, " (%s: no entry)\n", DNAME(dev)); + +} + +static int can_rcvlist_proc_show(struct seq_file *m, void *v) +{ + /* double cast to prevent GCC warning */ + int idx = (int)(long)pde_data(m->file->f_inode); + struct net_device *dev; + struct can_dev_rcv_lists *dev_rcv_lists; + struct net *net = m->private; + + seq_printf(m, "\nreceive list '%s':\n", rx_list_name[idx]); + + rcu_read_lock(); + + /* receive list for 'all' CAN devices (dev == NULL) */ + dev_rcv_lists = net->can.rx_alldev_list; + can_rcvlist_proc_show_one(m, idx, NULL, dev_rcv_lists); + + /* receive list for registered CAN devices */ + for_each_netdev_rcu(net, dev) { + struct can_ml_priv *can_ml = can_get_ml_priv(dev); + + if (can_ml) + can_rcvlist_proc_show_one(m, idx, dev, + &can_ml->dev_rcv_lists); + } + + rcu_read_unlock(); + + seq_putc(m, '\n'); + return 0; +} + +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) +{ + unsigned int i; + int all_empty = 1; + + /* check whether at least one list is non-empty */ + for (i = 0; i < rcv_array_sz; i++) + if (!hlist_empty(&rcv_array[i])) { + all_empty = 0; + break; + } + + if (!all_empty) { + can_print_recv_banner(m); + for (i = 0; i < rcv_array_sz; i++) { + if (!hlist_empty(&rcv_array[i])) + can_print_rcvlist(m, &rcv_array[i], dev); + } + } else + seq_printf(m, " (%s: no entry)\n", DNAME(dev)); +} + +static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v) +{ + struct net_device *dev; + struct can_dev_rcv_lists *dev_rcv_lists; + struct net *net = m->private; + + /* RX_SFF */ + seq_puts(m, "\nreceive list 'rx_sff':\n"); + + rcu_read_lock(); + + /* sff receive list for 'all' CAN devices (dev == NULL) */ + dev_rcv_lists = net->can.rx_alldev_list; + can_rcvlist_proc_show_array(m, NULL, dev_rcv_lists->rx_sff, + ARRAY_SIZE(dev_rcv_lists->rx_sff)); + + /* sff receive list for registered CAN devices */ + for_each_netdev_rcu(net, dev) { + struct can_ml_priv *can_ml = can_get_ml_priv(dev); + + if (can_ml) { + dev_rcv_lists = &can_ml->dev_rcv_lists; + can_rcvlist_proc_show_array(m, dev, dev_rcv_lists->rx_sff, + ARRAY_SIZE(dev_rcv_lists->rx_sff)); + } + } + + rcu_read_unlock(); + + seq_putc(m, '\n'); + return 0; +} + +static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v) +{ + struct net_device *dev; + struct can_dev_rcv_lists *dev_rcv_lists; + struct net *net = m->private; + + /* RX_EFF */ + seq_puts(m, "\nreceive list 'rx_eff':\n"); + + rcu_read_lock(); + + /* eff receive list for 'all' CAN devices (dev == NULL) */ + dev_rcv_lists = net->can.rx_alldev_list; + can_rcvlist_proc_show_array(m, NULL, dev_rcv_lists->rx_eff, + ARRAY_SIZE(dev_rcv_lists->rx_eff)); + + /* eff receive list for registered CAN devices */ + for_each_netdev_rcu(net, dev) { + struct can_ml_priv *can_ml = can_get_ml_priv(dev); + + if (can_ml) { + dev_rcv_lists = &can_ml->dev_rcv_lists; + can_rcvlist_proc_show_array(m, dev, dev_rcv_lists->rx_eff, + ARRAY_SIZE(dev_rcv_lists->rx_eff)); + } + } + + rcu_read_unlock(); + + seq_putc(m, '\n'); + return 0; +} + +/* + * can_init_proc - create main CAN proc directory and procfs entries + */ +void can_init_proc(struct net *net) +{ + /* create /proc/net/can directory */ + net->can.proc_dir = proc_net_mkdir(net, "can", net->proc_net); + + if (!net->can.proc_dir) { + printk(KERN_INFO "can: failed to create /proc/net/can . " + "CONFIG_PROC_FS missing?\n"); + return; + } + + /* own procfs entries from the AF_CAN core */ + net->can.pde_stats = proc_create_net_single(CAN_PROC_STATS, 0644, + net->can.proc_dir, can_stats_proc_show, NULL); + net->can.pde_reset_stats = proc_create_net_single(CAN_PROC_RESET_STATS, + 0644, net->can.proc_dir, can_reset_stats_proc_show, + NULL); + net->can.pde_rcvlist_err = proc_create_net_single(CAN_PROC_RCVLIST_ERR, + 0644, net->can.proc_dir, can_rcvlist_proc_show, + (void *)RX_ERR); + net->can.pde_rcvlist_all = proc_create_net_single(CAN_PROC_RCVLIST_ALL, + 0644, net->can.proc_dir, can_rcvlist_proc_show, + (void *)RX_ALL); + net->can.pde_rcvlist_fil = proc_create_net_single(CAN_PROC_RCVLIST_FIL, + 0644, net->can.proc_dir, can_rcvlist_proc_show, + (void *)RX_FIL); + net->can.pde_rcvlist_inv = proc_create_net_single(CAN_PROC_RCVLIST_INV, + 0644, net->can.proc_dir, can_rcvlist_proc_show, + (void *)RX_INV); + net->can.pde_rcvlist_eff = proc_create_net_single(CAN_PROC_RCVLIST_EFF, + 0644, net->can.proc_dir, can_rcvlist_eff_proc_show, NULL); + net->can.pde_rcvlist_sff = proc_create_net_single(CAN_PROC_RCVLIST_SFF, + 0644, net->can.proc_dir, can_rcvlist_sff_proc_show, NULL); +} + +/* + * can_remove_proc - remove procfs entries and main CAN proc directory + */ +void can_remove_proc(struct net *net) +{ + if (!net->can.proc_dir) + return; + + if (net->can.pde_stats) + remove_proc_entry(CAN_PROC_STATS, net->can.proc_dir); + + if (net->can.pde_reset_stats) + remove_proc_entry(CAN_PROC_RESET_STATS, net->can.proc_dir); + + if (net->can.pde_rcvlist_err) + remove_proc_entry(CAN_PROC_RCVLIST_ERR, net->can.proc_dir); + + if (net->can.pde_rcvlist_all) + remove_proc_entry(CAN_PROC_RCVLIST_ALL, net->can.proc_dir); + + if (net->can.pde_rcvlist_fil) + remove_proc_entry(CAN_PROC_RCVLIST_FIL, net->can.proc_dir); + + if (net->can.pde_rcvlist_inv) + remove_proc_entry(CAN_PROC_RCVLIST_INV, net->can.proc_dir); + + if (net->can.pde_rcvlist_eff) + remove_proc_entry(CAN_PROC_RCVLIST_EFF, net->can.proc_dir); + + if (net->can.pde_rcvlist_sff) + remove_proc_entry(CAN_PROC_RCVLIST_SFF, net->can.proc_dir); + + remove_proc_entry("can", net->proc_net); +} -- cgit v1.2.3