cregit-Linux how code gets into the kernel

Release 4.11 net/core/net-sysfs.c

Directory: net/core
/*
 * net-sysfs.c - network device class and attributes
 *
 * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org>
 *
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <net/switchdev.h>
#include <linux/if_arp.h>
#include <linux/slab.h>
#include <linux/sched/signal.h>
#include <linux/nsproxy.h>
#include <net/sock.h>
#include <net/net_namespace.h>
#include <linux/rtnetlink.h>
#include <linux/vmalloc.h>
#include <linux/export.h>
#include <linux/jiffies.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_net.h>

#include "net-sysfs.h"

#ifdef CONFIG_SYSFS

static const char fmt_hex[] = "%#x\n";

static const char fmt_dec[] = "%d\n";

static const char fmt_ulong[] = "%lu\n";

static const char fmt_u64[] = "%llu\n";


static inline int dev_isalive(const struct net_device *dev) { return dev->reg_state <= NETREG_REGISTERED; }

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Stephen Hemminger20100.00%2100.00%
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/* use same locking rules as GIF* ioctl's */
static ssize_t netdev_show(const struct device *dev, struct device_attribute *attr, char *buf, ssize_t (*format)(const struct net_device *, char *)) { struct net_device *ndev = to_net_dev(dev); ssize_t ret = -EINVAL; read_lock(&dev_base_lock); if (dev_isalive(ndev)) ret = (*format)(ndev, buf); read_unlock(&dev_base_lock); return ret; }

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Stephen Hemminger7587.21%250.00%
Greg Kroah-Hartman89.30%125.00%
Américo Wang33.49%125.00%
Total86100.00%4100.00%

/* generate a show function for simple field */ #define NETDEVICE_SHOW(field, format_string) \ static ssize_t format_##field(const struct net_device *dev, char *buf) \ { \ return sprintf(buf, format_string, dev->field); \ } \ static ssize_t field##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ return netdev_show(dev, attr, buf, format_##field); \ } \ #define NETDEVICE_SHOW_RO(field, format_string) \ NETDEVICE_SHOW(field, format_string); \ static DEVICE_ATTR_RO(field) #define NETDEVICE_SHOW_RW(field, format_string) \ NETDEVICE_SHOW(field, format_string); \ static DEVICE_ATTR_RW(field) /* use same locking and permission rules as SIF* ioctl's */
static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len, int (*set)(struct net_device *, unsigned long)) { struct net_device *netdev = to_net_dev(dev); struct net *net = dev_net(netdev); unsigned long new; int ret = -EINVAL; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; ret = kstrtoul(buf, 0, &new); if (ret) goto err; if (!rtnl_trylock()) return restart_syscall(); if (dev_isalive(netdev)) { if ((ret = (*set)(netdev, new)) == 0) ret = len; } rtnl_unlock(); err: return ret; }

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Stephen Hemminger12078.95%450.00%
Eric W. Biedermann2013.16%225.00%
Shuah Khan63.95%112.50%
Greg Kroah-Hartman63.95%112.50%
Total152100.00%8100.00%

NETDEVICE_SHOW_RO(dev_id, fmt_hex); NETDEVICE_SHOW_RO(dev_port, fmt_dec); NETDEVICE_SHOW_RO(addr_assign_type, fmt_dec); NETDEVICE_SHOW_RO(addr_len, fmt_dec); NETDEVICE_SHOW_RO(ifindex, fmt_dec); NETDEVICE_SHOW_RO(type, fmt_dec); NETDEVICE_SHOW_RO(link_mode, fmt_dec);
static ssize_t iflink_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *ndev = to_net_dev(dev); return sprintf(buf, fmt_dec, dev_get_iflink(ndev)); }

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Nicolas Dichtel4093.02%150.00%
Stefan Rompf36.98%150.00%
Total43100.00%2100.00%

static DEVICE_ATTR_RO(iflink);
static ssize_t format_name_assign_type(const struct net_device *dev, char *buf) { return sprintf(buf, fmt_dec, dev->name_assign_type); }

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Tom Gundersen2692.86%150.00%
Américo Wang27.14%150.00%
Total28100.00%2100.00%


static ssize_t name_assign_type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *ndev = to_net_dev(dev); ssize_t ret = -EINVAL; if (ndev->name_assign_type != NET_NAME_UNKNOWN) ret = netdev_show(dev, attr, buf, format_name_assign_type); return ret; }

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Tom Gundersen5896.67%150.00%
Américo Wang23.33%150.00%
Total60100.00%2100.00%

static DEVICE_ATTR_RO(name_assign_type); /* use same locking rules as GIFHWADDR ioctl's */
static ssize_t address_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *ndev = to_net_dev(dev); ssize_t ret = -EINVAL; read_lock(&dev_base_lock); if (dev_isalive(ndev)) ret = sysfs_format_mac(buf, ndev->dev_addr, ndev->addr_len); read_unlock(&dev_base_lock); return ret; }

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Stephen Hemminger6183.56%450.00%
Greg Kroah-Hartman79.59%225.00%
Américo Wang45.48%112.50%
Michael Chan11.37%112.50%
Total73100.00%8100.00%

static DEVICE_ATTR_RO(address);
static ssize_t broadcast_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *ndev = to_net_dev(dev); if (dev_isalive(ndev)) return sysfs_format_mac(buf, ndev->broadcast, ndev->addr_len); return -EINVAL; }

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Stephen Hemminger4378.18%342.86%
Greg Kroah-Hartman712.73%228.57%
Américo Wang47.27%114.29%
Michael Chan11.82%114.29%
Total55100.00%7100.00%

static DEVICE_ATTR_RO(broadcast);
static int change_carrier(struct net_device *dev, unsigned long new_carrier) { if (!netif_running(dev)) return -EINVAL; return dev_change_carrier(dev, (bool) new_carrier); }

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Jiri Pirko3592.11%150.00%
Américo Wang37.89%150.00%
Total38100.00%2100.00%


static ssize_t carrier_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_carrier); }

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Jiri Pirko3797.37%150.00%
Greg Kroah-Hartman12.63%150.00%
Total38100.00%2100.00%


static ssize_t carrier_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); if (netif_running(netdev)) { return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); } return -EINVAL; }

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Andrew Morton5187.93%133.33%
Greg Kroah-Hartman712.07%266.67%
Total58100.00%3100.00%

static DEVICE_ATTR_RW(carrier);
static ssize_t speed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); int ret = -EINVAL; if (!rtnl_trylock()) return restart_syscall(); if (netif_running(netdev)) { struct ethtool_link_ksettings cmd; if (!__ethtool_get_link_ksettings(netdev, &cmd)) ret = sprintf(buf, fmt_dec, cmd.base.speed); } rtnl_unlock(); return ret; }

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Andy Gospodarek8391.21%125.00%
David Decotigny66.59%125.00%
Alexander Stein11.10%125.00%
Greg Kroah-Hartman11.10%125.00%
Total91100.00%4100.00%

static DEVICE_ATTR_RO(speed);
static ssize_t duplex_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); int ret = -EINVAL; if (!rtnl_trylock()) return restart_syscall(); if (netif_running(netdev)) { struct ethtool_link_ksettings cmd; if (!__ethtool_get_link_ksettings(netdev, &cmd)) { const char *duplex; switch (cmd.base.duplex) { case DUPLEX_HALF: duplex = "half"; break; case DUPLEX_FULL: duplex = "full"; break; default: duplex = "unknown"; break; } ret = sprintf(buf, "%s\n", duplex); } } rtnl_unlock(); return ret; }

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Andy Gospodarek8466.67%125.00%
Nikolay Aleksandrov3729.37%125.00%
David Decotigny43.17%125.00%
Greg Kroah-Hartman10.79%125.00%
Total126100.00%4100.00%

static DEVICE_ATTR_RO(duplex);
static ssize_t dormant_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); if (netif_running(netdev)) return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); return -EINVAL; }

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Stefan Rompf4987.50%133.33%
Greg Kroah-Hartman712.50%266.67%
Total56100.00%3100.00%

static DEVICE_ATTR_RO(dormant); static const char *const operstates[] = { "unknown", "notpresent", /* currently unused */ "down", "lowerlayerdown", "testing", /* currently unused */ "dormant", "up" };
static ssize_t operstate_show(struct device *dev, struct device_attribute *attr, char *buf) { const struct net_device *netdev = to_net_dev(dev); unsigned char operstate; read_lock(&dev_base_lock); operstate = netdev->operstate; if (!netif_running(netdev)) operstate = IF_OPER_DOWN; read_unlock(&dev_base_lock); if (operstate >= ARRAY_SIZE(operstates)) return -EINVAL; /* should not happen */ return sprintf(buf, "%s\n", operstates[operstate]); }

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Stefan Rompf8491.30%125.00%
Greg Kroah-Hartman77.61%250.00%
Adrian Bunk11.09%125.00%
Total92100.00%4100.00%

static DEVICE_ATTR_RO(operstate);
static ssize_t carrier_changes_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); return sprintf(buf, fmt_dec, atomic_read(&netdev->carrier_changes)); }

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David Decotigny46100.00%1100.00%
Total46100.00%1100.00%

static DEVICE_ATTR_RO(carrier_changes); /* read-write attributes */
static int change_mtu(struct net_device *dev, unsigned long new_mtu) { return dev_set_mtu(dev, (int) new_mtu); }

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Stephen Hemminger2492.31%150.00%
Américo Wang27.69%150.00%
Total26100.00%2100.00%


static ssize_t mtu_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_mtu); }

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Stephen Hemminger2976.32%250.00%
Greg Kroah-Hartman923.68%250.00%
Total38100.00%4100.00%

NETDEVICE_SHOW_RW(mtu, fmt_dec);
static int change_flags(struct net_device *dev, unsigned long new_flags) { return dev_change_flags(dev, (unsigned int) new_flags); }

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Stephen Hemminger2488.89%133.33%
Américo Wang27.41%133.33%
Eric Dumazet13.70%133.33%
Total27100.00%3100.00%


static ssize_t flags_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_flags); }

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Stephen Hemminger2976.32%250.00%
Greg Kroah-Hartman923.68%250.00%
Total38100.00%4100.00%

NETDEVICE_SHOW_RW(flags, fmt_hex);
static int change_tx_queue_len(struct net_device *dev, unsigned long new_len) { int res, orig_len = dev->tx_queue_len; if (new_len != orig_len) { dev->tx_queue_len = new_len; res = call_netdevice_notifiers(NETDEV_CHANGE_TX_QUEUE_LEN, dev); res = notifier_to_errno(res); if (res) { netdev_err(dev, "refused to change device tx_queue_len\n"); dev->tx_queue_len = orig_len; return -EFAULT; } } return 0; }

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Jason (Hui) Wang5670.00%125.00%
Stephen Hemminger2227.50%250.00%
Américo Wang22.50%125.00%
Total80100.00%4100.00%


static ssize_t tx_queue_len_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { if (!capable(CAP_NET_ADMIN)) return -EPERM; return netdev_store(dev, attr, buf, len, change_tx_queue_len); }

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Stephen Hemminger2958.00%125.00%
Eric W. Biedermann1224.00%125.00%
Greg Kroah-Hartman918.00%250.00%
Total50100.00%4100.00%

NETDEVICE_SHOW_RW(tx_queue_len, fmt_ulong);
static int change_gro_flush_timeout(struct net_device *dev, unsigned long val) { dev->gro_flush_timeout = val; return 0; }

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Eric Dumazet24100.00%1100.00%
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static ssize_t gro_flush_timeout_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { if (!capable(CAP_NET_ADMIN)) return -EPERM; return netdev_store(dev, attr, buf, len, change_gro_flush_timeout); }

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Eric Dumazet50100.00%1100.00%
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NETDEVICE_SHOW_RW(gro_flush_timeout, fmt_ulong);
static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct net_device *netdev = to_net_dev(dev); struct net *net = dev_net(netdev); size_t count = len; ssize_t ret; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; /* ignore trailing newline */ if (len > 0 && buf[len - 1] == '\n') --count; if (!rtnl_trylock()) return restart_syscall(); ret = dev_set_alias(netdev, buf, count); rtnl_unlock(); return ret < 0 ? ret : len; }

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Stephen Hemminger9579.17%125.00%
Eric W. Biedermann2420.00%250.00%
Greg Kroah-Hartman10.83%125.00%
Total120100.00%4100.00%


static ssize_t ifalias_show(struct device *dev, struct device_attribute *attr, char *buf) { const struct net_device *netdev = to_net_dev(dev); ssize_t ret = 0; if (!rtnl_trylock()) return restart_syscall(); if (netdev->ifalias) ret = sprintf(buf, "%s\n", netdev->ifalias); rtnl_unlock(); return ret; }

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Stephen Hemminger6185.92%133.33%
Eric W. Biedermann912.68%133.33%
Greg Kroah-Hartman11.41%133.33%
Total71100.00%3100.00%

static DEVICE_ATTR_RW(ifalias);
static int change_group(struct net_device *dev, unsigned long new_group) { dev_set_group(dev, (int) new_group); return 0; }

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Vlad Dogaru2692.86%150.00%
Américo Wang27.14%150.00%
Total28100.00%2100.00%


static ssize_t group_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_group); }

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Vlad Dogaru3797.37%150.00%
Greg Kroah-Hartman12.63%150.00%
Total38100.00%2100.00%

NETDEVICE_SHOW(group, fmt_dec); static DEVICE_ATTR(netdev_group, S_IRUGO | S_IWUSR, group_show, group_store);
static int change_proto_down(struct net_device *dev, unsigned long proto_down) { return dev_change_proto_down(dev, (bool) proto_down); }

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Anuradha Karuppiah26100.00%1100.00%
Total26100.00%1100.00%


static ssize_t proto_down_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_proto_down); }

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Anuradha Karuppiah38100.00%1100.00%
Total38100.00%1100.00%

NETDEVICE_SHOW_RW(proto_down, fmt_dec);
static ssize_t phys_port_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); ssize_t ret = -EINVAL; if (!rtnl_trylock()) return restart_syscall(); if (dev_isalive(netdev)) { struct netdev_phys_item_id ppid; ret = dev_get_phys_port_id(netdev, &ppid); if (!ret) ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id); } rtnl_unlock(); return ret; }

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Jiri Pirko9698.97%266.67%
Linus Torvalds11.03%133.33%
Total97100.00%3100.00%

static DEVICE_ATTR_RO(phys_port_id);
static ssize_t phys_port_name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); ssize_t ret = -EINVAL; if (!rtnl_trylock()) return restart_syscall(); if (dev_isalive(netdev)) { char name[IFNAMSIZ]; ret = dev_get_phys_port_name(netdev, name, sizeof(name)); if (!ret) ret = sprintf(buf, "%s\n", name); } rtnl_unlock(); return ret; }

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David Ahern97100.00%1100.00%
Total97100.00%1100.00%

static DEVICE_ATTR_RO(phys_port_name);
static ssize_t phys_switch_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); ssize_t ret = -EINVAL; if (!rtnl_trylock()) return restart_syscall(); if (dev_isalive(netdev)) { struct switchdev_attr attr = { .orig_dev = netdev, .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, .flags = SWITCHDEV_F_NO_RECURSE, }; ret = switchdev_port_attr_get(netdev, &attr); if (!ret) ret = sprintf(buf, "%*phN\n", attr.u.ppid.id_len, attr.u.ppid.id); } rtnl_unlock(); return ret; }

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Jiri Pirko9477.05%240.00%
Scott Feldman2318.85%240.00%
Ido Schimmel54.10%120.00%
Total122100.00%5100.00%

static DEVICE_ATTR_RO(phys_switch_id); static struct attribute *net_class_attrs[] = { &dev_attr_netdev_group.attr, &dev_attr_type.attr, &dev_attr_dev_id.attr, &dev_attr_dev_port.attr, &dev_attr_iflink.attr, &dev_attr_ifindex.attr, &dev_attr_name_assign_type.attr, &dev_attr_addr_assign_type.attr, &dev_attr_addr_len.attr, &dev_attr_link_mode.attr, &dev_attr_address.attr, &dev_attr_broadcast.attr, &dev_attr_speed.attr, &dev_attr_duplex.attr, &dev_attr_dormant.attr, &dev_attr_operstate.attr, &dev_attr_carrier_changes.attr, &dev_attr_ifalias.attr, &dev_attr_carrier.attr, &dev_attr_mtu.attr, &dev_attr_flags.attr, &dev_attr_tx_queue_len.attr, &dev_attr_gro_flush_timeout.attr, &dev_attr_phys_port_id.attr, &dev_attr_phys_port_name.attr, &dev_attr_phys_switch_id.attr, &dev_attr_proto_down.attr, NULL, }; ATTRIBUTE_GROUPS(net_class); /* Show a given an attribute in the statistics group */
static ssize_t netstat_show(const struct device *d, struct device_attribute *attr, char *buf, unsigned long offset) { struct net_device *dev = to_net_dev(d); ssize_t ret = -EINVAL; WARN_ON(offset > sizeof(struct rtnl_link_stats64) || offset % sizeof(u64) != 0); read_lock(&dev_base_lock); if (dev_isalive(dev)) { struct rtnl_link_stats64 temp; const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp); ret = sprintf(buf, fmt_u64, *(u64 *)(((u8 *) stats) + offset)); } read_unlock(&dev_base_lock); return ret; }

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Stephen Hemminger10178.29%337.50%
Ben Hutchings86.20%112.50%
Greg Kroah-Hartman86.20%112.50%
Eric Dumazet75.43%112.50%
Pavel Emelyanov53.88%225.00%
Total129100.00%8100.00%

/* generate a read-only statistics attribute */ #define NETSTAT_ENTRY(name) \ static ssize_t name##_show(struct device *d, \ struct device_attribute *attr, char *buf) \ { \ return netstat_show(d, attr, buf, \ offsetof(struct rtnl_link_stats64, name)); \ } \ static DEVICE_ATTR_RO(name) NETSTAT_ENTRY(rx_packets); NETSTAT_ENTRY(tx_packets); NETSTAT_ENTRY(rx_bytes); NETSTAT_ENTRY(tx_bytes); NETSTAT_ENTRY(rx_errors); NETSTAT_ENTRY(tx_errors); NETSTAT_ENTRY(rx_dropped); NETSTAT_ENTRY(tx_dropped); NETSTAT_ENTRY(multicast); NETSTAT_ENTRY(collisions); NETSTAT_ENTRY(rx_length_errors); NETSTAT_ENTRY(rx_over_errors); NETSTAT_ENTRY(rx_crc_errors); NETSTAT_ENTRY(rx_frame_errors); NETSTAT_ENTRY(rx_fifo_errors); NETSTAT_ENTRY(rx_missed_errors); NETSTAT_ENTRY(tx_aborted_errors); NETSTAT_ENTRY(tx_carrier_errors); NETSTAT_ENTRY(tx_fifo_errors); NETSTAT_ENTRY(tx_heartbeat_errors); NETSTAT_ENTRY(tx_window_errors); NETSTAT_ENTRY(rx_compressed); NETSTAT_ENTRY(tx_compressed); NETSTAT_ENTRY(rx_nohandler); static struct attribute *netstat_attrs[] = { &dev_attr_rx_packets.attr, &dev_attr_tx_packets.attr, &dev_attr_rx_bytes.attr, &dev_attr_tx_bytes.attr, &dev_attr_rx_errors.attr, &dev_attr_tx_errors.attr, &dev_attr_rx_dropped.attr, &dev_attr_tx_dropped.attr, &dev_attr_multicast.attr, &dev_attr_collisions.attr, &dev_attr_rx_length_errors.attr, &dev_attr_rx_over_errors.attr, &dev_attr_rx_crc_errors.attr, &dev_attr_rx_frame_errors.attr, &dev_attr_rx_fifo_errors.attr, &dev_attr_rx_missed_errors.attr, &dev_attr_tx_aborted_errors.attr, &dev_attr_tx_carrier_errors.attr, &dev_attr_tx_fifo_errors.attr, &dev_attr_tx_heartbeat_errors.attr, &dev_attr_tx_window_errors.attr, &dev_attr_rx_compressed.attr, &dev_attr_tx_compressed.attr, &dev_attr_rx_nohandler.attr, NULL }; static struct attribute_group netstat_group = { .name = "statistics", .attrs = netstat_attrs, }; #if IS_ENABLED(CONFIG_WIRELESS_EXT) || IS_ENABLED(CONFIG_CFG80211) static struct attribute *wireless_attrs[] = { NULL }; static struct attribute_group wireless_group = { .name = "wireless", .attrs = wireless_attrs, }; #endif #else /* CONFIG_SYSFS */ #define net_class_groups NULL #endif /* CONFIG_SYSFS */ #ifdef CONFIG_SYSFS #define to_rx_queue_attr(_attr) container_of(_attr, \ struct rx_queue_attribute, attr) #define to_rx_queue(obj) container_of(obj, struct netdev_rx_queue, kobj)
static ssize_t rx_queue_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct rx_queue_attribute *attribute = to_rx_queue_attr(attr); struct netdev_rx_queue *queue = to_rx_queue(kobj); if (!attribute->show) return -EIO; return attribute->show(queue, attribute, buf); }

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Tom Herbert63100.00%1100.00%
Total63100.00%1100.00%


static ssize_t rx_queue_attr_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { struct rx_queue_attribute *attribute = to_rx_queue_attr(attr); struct netdev_rx_queue *queue = to_rx_queue(kobj); if (!attribute->store) return -EIO; return attribute->store(queue, attribute, buf, count); }

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Tom Herbert69100.00%1100.00%
Total69100.00%1100.00%

static const struct sysfs_ops rx_queue_sysfs_ops = { .show = rx_queue_attr_show, .store = rx_queue_attr_store, }; #ifdef CONFIG_RPS
static ssize_t show_rps_map(struct netdev_rx_queue *queue, struct rx_queue_attribute *attribute, char *buf) { struct rps_map *map; cpumask_var_t mask; int i, len; if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; rcu_read_lock(); map = rcu_dereference(queue->rps_map); if (map) for (i = 0; i < map->len; i++) cpumask_set_cpu(map->cpus[i], mask); len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask)); rcu_read_unlock(); free_cpumask_var(mask); return len < PAGE_SIZE ? len : -EINVAL; }

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Tom Herbert11088.00%150.00%
Tejun Heo1512.00%150.00%
Total125100.00%2100.00%


static ssize_t store_rps_map(struct netdev_rx_queue *queue, struct rx_queue_attribute *attribute, const char *buf, size_t len) { struct rps_map *old_map, *map; cpumask_var_t mask; int err, cpu, i; static DEFINE_MUTEX(rps_map_mutex); if (!capable(CAP_NET_ADMIN)) return -EPERM; if (!alloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits); if (err) { free_cpumask_var(mask); return err; } map = kzalloc(max_t(unsigned int, RPS_MAP_SIZE(cpumask_weight(mask)), L1_CACHE_BYTES), GFP_KERNEL); if (!map) { free_cpumask_var(mask); return -ENOMEM; } i = 0; for_each_cpu_and(cpu, mask, cpu_online_mask) map->cpus[i++] = cpu; if (i) map->len = i; else { kfree(map); map = NULL; } mutex_lock(&rps_map_mutex); old_map = rcu_dereference_protected(queue->rps_map, mutex_is_locked(&rps_map_mutex)); rcu_assign_pointer(queue->rps_map, map); if (map) static_key_slow_inc(&rps_needed); if (old_map) static_key_slow_dec(&rps_needed); mutex_unlock(&rps_map_mutex); if (old_map) kfree_rcu(old_map, rcu); free_cpumask_var(mask); return len; }

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Tom Herbert22788.67%225.00%
Eric Dumazet197.42%450.00%
Sasha Levin83.12%112.50%
Lai Jiangshan20.78%112.50%
Total256100.00%8100.00%


static ssize_t show_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, struct rx_queue_attribute *attr, char *buf) { struct rps_dev_flow_table *flow_table; unsigned long val = 0; rcu_read_lock(); flow_table = rcu_dereference(queue->rps_flow_table); if (flow_table) val = (unsigned long)flow_table->mask + 1; rcu_read_unlock(); return sprintf(buf, "%lu\n", val); }

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Tom Herbert6691.67%150.00%
Eric Dumazet68.33%150.00%
Total72100.00%2100.00%


static void rps_dev_flow_table_release(struct rcu_head *rcu) { struct rps_dev_flow_table *table = container_of(rcu, struct rps_dev_flow_table, rcu); vfree(table); }

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Tom Herbert3096.77%150.00%
Al Viro13.23%150.00%
Total31100.00%2100.00%


static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, struct rx_queue_attribute *attr, const char *buf, size_t len) { unsigned long mask, count; struct rps_dev_flow_table *table, *old_table; static DEFINE_SPINLOCK(rps_dev_flow_lock); int rc; if (!capable(CAP_NET_ADMIN)) return -EPERM; rc = kstrtoul(buf, 0, &count); if (rc < 0) return rc; if (count) { mask = count - 1; /* mask = roundup_pow_of_two(count) - 1; * without overflows... */ while ((mask | (mask >> 1)) != mask) mask |= (mask >> 1); /* On 64 bit arches, must check mask fits in table->mask (u32), * and on 32bit arches, must check * RPS_DEV_FLOW_TABLE_SIZE(mask + 1) doesn't overflow. */ #if BITS_PER_LONG > 32 if (mask > (unsigned long)(u32)mask) return -EINVAL; #else if (mask > (ULONG_MAX - RPS_DEV_FLOW_TABLE_SIZE(1)) / sizeof(struct rps_dev_flow)) { /* Enforce a limit to prevent overflow */ return -EINVAL; } #endif table = vmalloc(RPS_DEV_FLOW_TABLE_SIZE(mask + 1)); if (!table) return -ENOMEM; table->mask = mask; for (count = 0; count <= mask; count++) table->flows[count].cpu = RPS_NO_CPU; } else table = NULL; spin_lock(&rps_dev_flow_lock); old_table = rcu_dereference_protected(queue->rps_flow_table, lockdep_is_held(&rps_dev_flow_lock)); rcu_assign_pointer(queue->rps_flow_table, table); spin_unlock(&rps_dev_flow_lock); if (old_table) call_rcu(&old_table->rcu, rps_dev_flow_table_release); return len; }

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Tom Herbert16961.01%116.67%
Eric Dumazet8430.32%350.00%
Xi Wang238.30%116.67%
Stephen Hemminger10.36%116.67%
Total277100.00%6100.00%

static struct rx_queue_attribute rps_cpus_attribute = __ATTR(rps_cpus, S_IRUGO | S_IWUSR, show_rps_map, store_rps_map); static struct rx_queue_attribute rps_dev_flow_table_cnt_attribute = __ATTR(rps_flow_cnt, S_IRUGO | S_IWUSR, show_rps_dev_flow_table_cnt, store_rps_dev_flow_table_cnt); #endif /* CONFIG_RPS */ static struct attribute *rx_queue_default_attrs[] = { #ifdef CONFIG_RPS &rps_cpus_attribute.attr, &rps_dev_flow_table_cnt_attribute.attr, #endif NULL };
static void rx_queue_release(struct kobject *kobj) { struct netdev_rx_queue *queue = to_rx_queue(kobj); #ifdef CONFIG_RPS struct rps_map *map; struct rps_dev_flow_table *flow_table; map = rcu_dereference_protected(queue->rps_map, 1); if (map) { RCU_INIT_POINTER(queue->rps_map, NULL); kfree_rcu(map, rcu); } flow_table = rcu_dereference_protected(queue->rps_flow_table, 1); if (flow_table) { RCU_INIT_POINTER(queue->rps_flow_table, NULL); call_rcu(&flow_table->rcu, rps_dev_flow_table_release); } #endif memset(kobj, 0, sizeof(*kobj)); dev_put(queue->dev); }

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Tom Herbert5040.00%337.50%
John Fastabend3528.00%112.50%
Eric Dumazet3326.40%225.00%
Michael Dalton54.00%112.50%
Lai Jiangshan21.60%112.50%
Total125100.00%8100.00%


static const void *rx_queue_namespace(struct kobject *kobj) { struct netdev_rx_queue *queue = to_rx_queue(kobj); struct device *dev = &queue->dev->dev; const void *ns = NULL; if (dev->class && dev->class->ns_type) ns = dev->class->namespace(dev); return ns; }

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Weilong Chen68100.00%1100.00%
Total68100.00%1100.00%

static struct kobj_type rx_queue_ktype = { .sysfs_ops = &rx_queue_sysfs_ops, .release = rx_queue_release, .default_attrs = rx_queue_default_attrs, .namespace = rx_queue_namespace };
static int rx_queue_add_kobject(struct net_device *dev, int index) { struct netdev_rx_queue *queue = dev->_rx + index; struct kobject *kobj = &queue->kobj; int error = 0; kobj->kset = dev->queues_kset; error = kobject_init_and_add(kobj, &rx_queue_ktype, NULL, "rx-%u", index); if (error) goto exit; if (dev->sysfs_rx_queue_group) { error = sysfs_create_group(kobj, dev->sysfs_rx_queue_group); if (error) goto exit; } kobject_uevent(kobj, KOBJ_ADD); dev_hold(queue->dev); return error; exit: kobject_put(kobj); return error; }

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Tom Herbert8971.77%360.00%
Michael Dalton3024.19%120.00%
Américo Wang54.03%120.00%
Total124100.00%5100.00%

#endif /* CONFIG_SYSFS */
int net_rx_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) { #ifdef CONFIG_SYSFS int i; int error = 0; #ifndef CONFIG_RPS if (!dev->sysfs_rx_queue_group) return 0; #endif for (i = old_num; i < new_num; i++) { error = rx_queue_add_kobject(dev, i); if (error) { new_num = old_num; break; } } while (--i >= new_num) { struct kobject *kobj = &dev->_rx[i].kobj; if (!atomic_read(&dev_net(dev)->count)) kobj->uevent_suppress = 1; if (dev->sysfs_rx_queue_group) sysfs_remove_group(kobj, dev->sysfs_rx_queue_group); kobject_put(kobj); } return error; #else return 0; #endif }

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Tom Herbert6543.05%228.57%
Andrey Vagin3523.18%228.57%
Michael Dalton3019.87%114.29%
Ben Hutchings1610.60%114.29%
Américo Wang53.31%114.29%
Total151100.00%7100.00%

#ifdef CONFIG_SYSFS /* * netdev_queue sysfs structures and functions. */ struct netdev_queue_attribute { struct attribute attr; ssize_t (*show)(struct netdev_queue *queue, struct netdev_queue_attribute *attr, char *buf); ssize_t (*store)(struct netdev_queue *queue, struct netdev_queue_attribute *attr, const char *buf, size_t len); }; #define to_netdev_queue_attr(_attr) container_of(_attr, \ struct netdev_queue_attribute, attr) #define to_netdev_queue(obj) container_of(obj, struct netdev_queue, kobj)
static ssize_t netdev_queue_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr); struct netdev_queue *queue = to_netdev_queue(kobj); if (!attribute->show) return -EIO; return attribute->show(queue, attribute, buf); }

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Tom Herbert63100.00%1100.00%
Total63100.00%1100.00%


static ssize_t netdev_queue_attr_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) { struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr); struct netdev_queue *queue = to_netdev_queue(kobj); if (!attribute->store) return -EIO; return attribute->store(queue, attribute, buf, count); }

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Tom Herbert69100.00%1100.00%
Total69100.00%1100.00%

static const struct sysfs_ops netdev_queue_sysfs_ops = { .show = netdev_queue_attr_show, .store = netdev_queue_attr_store, };
static ssize_t show_trans_timeout(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, char *buf) { unsigned long trans_timeout; spin_lock_irq(&queue->_xmit_lock); trans_timeout = queue->trans_timeout; spin_unlock_irq(&queue->_xmit_lock); return sprintf(buf, "%lu", trans_timeout); }

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David Decotigny56100.00%1100.00%
Total56100.00%1100.00%


static unsigned int get_netdev_queue_index(struct netdev_queue *queue) { struct net_device *dev = queue->dev; unsigned int i; i = queue - dev->_tx; BUG_ON(i >= dev->num_tx_queues); return i; }

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John Fastabend4293.33%150.00%
Thadeu Lima de Souza Cascardo36.67%150.00%
Total45100.00%2100.00%


static ssize_t show_traffic_class(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, char *buf) { struct net_device *dev = queue->dev; int index = get_netdev_queue_index(queue); int tc = netdev_txq_to_tc(dev, index); if (tc < 0) return -EINVAL; return sprintf(buf, "%u\n", tc); }

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Alexander Duyck67100.00%1100.00%
Total67100.00%1100.00%

#ifdef CONFIG_XPS
static ssize_t show_tx_maxrate(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, char *buf) { return sprintf(buf, "%lu\n", queue->tx_maxrate); }

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John Fastabend32100.00%1100.00%
Total32100.00%1100.00%


static ssize_t set_tx_maxrate(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, const char *buf, size_t len) { struct net_device *dev = queue->dev; int err, index = get_netdev_queue_index(queue); u32 rate = 0; err = kstrtou32(buf, 10, &rate); if (err < 0) return err; if (!rtnl_trylock()) return restart_syscall(); err = -EOPNOTSUPP; if (dev->netdev_ops->ndo_set_tx_maxrate) err = dev->netdev_ops->ndo_set_tx_maxrate(dev, index, rate); rtnl_unlock(); if (!err) { queue->tx_maxrate = rate; return len; } return err; }

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John Fastabend129100.00%1100.00%
Total129100.00%1100.00%

static struct netdev_queue_attribute queue_tx_maxrate = __ATTR(tx_maxrate, S_IRUGO | S_IWUSR, show_tx_maxrate, set_tx_maxrate); #endif static struct netdev_queue_attribute queue_trans_timeout = __ATTR(tx_timeout, S_IRUGO, show_trans_timeout, NULL); static struct netdev_queue_attribute queue_traffic_class = __ATTR(traffic_class, S_IRUGO, show_traffic_class, NULL); #ifdef CONFIG_BQL /* * Byte queue limits sysfs structures and functions. */
static ssize_t bql_show(char *buf, unsigned int value) { return sprintf(buf, "%u\n", value); }

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Tom Herbert24100.00%1100.00%
Total24100.00%1100.00%


static ssize_t bql_set(const char *buf, const size_t count, unsigned int *pvalue) { unsigned int value; int err; if (!strcmp(buf, "max") || !strcmp(buf, "max\n")) value = DQL_MAX_LIMIT; else { err = kstrtouint(buf, 10, &value); if (err < 0) return err; if (value > DQL_MAX_LIMIT) return -EINVAL; } *pvalue = value; return count; }

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Tom Herbert91100.00%1100.00%
Total91100.00%1100.00%


static ssize_t bql_show_hold_time(struct netdev_queue *queue, struct netdev_queue_attribute *attr, char *buf) { struct dql *dql = &queue->dql; return sprintf(buf, "%u\n", jiffies_to_msecs(dql->slack_hold_time)); }

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Tom Herbert45100.00%1100.00%
Total45100.00%1100.00%


static ssize_t bql_set_hold_time(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, const char *buf, size_t len) { struct dql *dql = &queue->dql; unsigned int value; int err; err = kstrtouint(buf, 10, &value); if (err < 0) return err; dql->slack_hold_time = msecs_to_jiffies(value); return len; }

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Tom Herbert7398.65%150.00%
Eric Dumazet11.35%150.00%
Total74100.00%2100.00%

static struct netdev_queue_attribute bql_hold_time_attribute = __ATTR(hold_time, S_IRUGO | S_IWUSR, bql_show_hold_time, bql_set_hold_time);
static ssize_t bql_show_inflight(struct netdev_queue *queue, struct netdev_queue_attribute *attr, char *buf) { struct dql *dql = &queue->dql; return sprintf(buf, "%u\n", dql->num_queued - dql->num_completed); }

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Tom Herbert46100.00%1100.00%
Total46100.00%1100.00%

static struct netdev_queue_attribute bql_inflight_attribute = __ATTR(inflight, S_IRUGO, bql_show_inflight, NULL); #define BQL_ATTR(NAME, FIELD) \ static ssize_t bql_show_ ## NAME(struct netdev_queue *queue, \ struct netdev_queue_attribute *attr, \ char *buf) \ { \ return bql_show(buf, queue->dql.FIELD); \ } \ \ static ssize_t bql_set_ ## NAME(struct netdev_queue *queue, \ struct netdev_queue_attribute *attr, \ const char *buf, size_t len) \ { \ return bql_set(buf, len, &queue->dql.FIELD); \ } \ \ static struct netdev_queue_attribute bql_ ## NAME ## _attribute = \ __ATTR(NAME, S_IRUGO | S_IWUSR, bql_show_ ## NAME, \ bql_set_ ## NAME); BQL_ATTR(limit, limit) BQL_ATTR(limit_max, max_limit) BQL_ATTR(limit_min, min_limit) static struct attribute *dql_attrs[] = { &bql_limit_attribute.attr, &bql_limit_max_attribute.attr, &bql_limit_min_attribute.attr, &bql_hold_time_attribute.attr, &bql_inflight_attribute.attr, NULL }; static struct attribute_group dql_group = { .name = "byte_queue_limits", .attrs = dql_attrs, }; #endif /* CONFIG_BQL */ #ifdef CONFIG_XPS
static ssize_t show_xps_map(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, char *buf) { struct net_device *dev = queue->dev; int cpu, len, num_tc = 1, tc = 0; struct xps_dev_maps *dev_maps; cpumask_var_t mask; unsigned long index; if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; index = get_netdev_queue_index(queue); if (dev->num_tc) { num_tc = dev->num_tc; tc = netdev_txq_to_tc(dev, index); if (tc < 0) return -EINVAL; } rcu_read_lock(); dev_maps = rcu_dereference(dev->xps_maps); if (dev_maps) { for_each_possible_cpu(cpu) { int i, tci = cpu * num_tc + tc; struct xps_map *map; map = rcu_dereference(dev_maps->cpu_map[tci]); if (!map) continue; for (i = map->len; i--;) { if (map->queues[i] == index) { cpumask_set_cpu(cpu, mask); break; } } } } rcu_read_unlock(); len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask)); free_cpumask_var(mask); return len < PAGE_SIZE ? len : -EINVAL; }

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Tom Herbert15264.41%133.33%
Alexander Duyck7130.08%133.33%
Tejun Heo135.51%133.33%
Total236100.00%3100.00%


static ssize_t store_xps_map(struct netdev_queue *queue, struct netdev_queue_attribute *attribute, const char *buf, size_t len) { struct net_device *dev = queue->dev; unsigned long index; cpumask_var_t mask; int err; if (!capable(CAP_NET_ADMIN)) return -EPERM; if (!alloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; index = get_netdev_queue_index(queue); err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits); if (err) { free_cpumask_var(mask); return err; } err = netif_set_xps_queue(dev, mask, index); free_cpumask_var(mask); return err ? : len; }

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Tom Herbert11689.92%133.33%
Alexander Duyck96.98%133.33%
Eric Dumazet43.10%133.33%
Total129100.00%3100.00%

static struct netdev_queue_attribute xps_cpus_attribute = __ATTR(xps_cpus, S_IRUGO | S_IWUSR, show_xps_map, store_xps_map); #endif /* CONFIG_XPS */ static struct attribute *netdev_queue_default_attrs[] = { &queue_trans_timeout.attr, &queue_traffic_class.attr, #ifdef CONFIG_XPS &xps_cpus_attribute.attr, &queue_tx_maxrate.attr, #endif NULL };
static void netdev_queue_release(struct kobject *kobj) { struct netdev_queue *queue = to_netdev_queue(kobj); memset(kobj, 0, sizeof(*kobj)); dev_put(queue->dev); }

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Tom Herbert41100.00%1100.00%
Total41100.00%1100.00%


static const void *netdev_queue_namespace(struct kobject *kobj) { struct netdev_queue *queue = to_netdev_queue(kobj); struct device *dev = &queue->dev->dev; const void *ns = NULL; if (dev->class && dev->class->ns_type) ns = dev->class->namespace(dev); return ns; }

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Weilong Chen68100.00%1100.00%
Total68100.00%1100.00%

static struct kobj_type netdev_queue_ktype = { .sysfs_ops = &netdev_queue_sysfs_ops, .release = netdev_queue_release, .default_attrs = netdev_queue_default_attrs, .namespace = netdev_queue_namespace, };
static int netdev_queue_add_kobject(struct net_device *dev, int index) { struct netdev_queue *queue = dev->_tx + index; struct kobject *kobj = &queue->kobj; int error = 0; kobj->kset = dev->queues_kset; error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL, "tx-%u", index); if (error) goto exit; #ifdef CONFIG_BQL error = sysfs_create_group(kobj, &dql_group); if (error) goto exit; #endif kobject_uevent(kobj, KOBJ_ADD); dev_hold(queue->dev); return 0; exit: kobject_put(kobj); return error; }

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Tom Herbert11797.50%266.67%
Américo Wang32.50%133.33%
Total120100.00%3100.00%

#endif /* CONFIG_SYSFS */
int netdev_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) { #ifdef CONFIG_SYSFS int i; int error = 0; for (i = old_num; i < new_num; i++) { error = netdev_queue_add_kobject(dev, i); if (error) { new_num = old_num; break; } } while (--i >= new_num) { struct netdev_queue *queue = dev->_tx + i; if (!atomic_read(&dev_net(dev)->count)) queue->kobj.uevent_suppress = 1; #ifdef CONFIG_BQL sysfs_remove_group(&queue->kobj, &dql_group); #endif kobject_put(&queue->kobj); } return error; #else return 0; #endif /* CONFIG_SYSFS */ }

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Tom Herbert11280.58%342.86%
Andrey Vagin2215.83%228.57%
Américo Wang32.16%114.29%
David Decotigny21.44%114.29%
Total139100.00%7100.00%


static int register_queue_kobjects(struct net_device *dev) { int error = 0, txq = 0, rxq = 0, real_rx = 0, real_tx = 0; #ifdef CONFIG_SYSFS dev->queues_kset = kset_create_and_add("queues", NULL, &dev->dev.kobj); if (!dev->queues_kset) return -ENOMEM; real_rx = dev->real_num_rx_queues; #endif real_tx = dev->real_num_tx_queues; error = net_rx_queue_update_kobjects(dev, 0, real_rx); if (error) goto error; rxq = real_rx; error = netdev_queue_update_kobjects(dev, 0, real_tx); if (error) goto error; txq = real_tx; return 0; error: netdev_queue_update_kobjects(dev, txq, 0); net_rx_queue_update_kobjects(dev, rxq, 0); return error; }

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Tom Herbert10872.97%350.00%
Ben Hutchings2718.24%116.67%
Américo Wang106.76%116.67%
David Decotigny32.03%116.67%
Total148100.00%6100.00%


static void remove_queue_kobjects(struct net_device *dev) { int real_rx = 0, real_tx = 0; #ifdef CONFIG_SYSFS real_rx = dev->real_num_rx_queues; #endif real_tx = dev->real_num_tx_queues; net_rx_queue_update_kobjects(dev, real_rx, 0); netdev_queue_update_kobjects(dev, real_tx, 0); #ifdef CONFIG_SYSFS kset_unregister(dev->queues_kset); #endif }

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Tom Herbert4059.70%337.50%
Ben Hutchings1522.39%112.50%
Américo Wang68.96%112.50%
David Decotigny34.48%112.50%
Eric W. Biedermann22.99%112.50%
Michael Dalton11.49%112.50%
Total67100.00%8100.00%


static bool net_current_may_mount(void) { struct net *net = current->nsproxy->net_ns; return ns_capable(net->user_ns, CAP_SYS_ADMIN); }

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Eric W. Biedermann29100.00%1100.00%
Total29100.00%1100.00%


static void *net_grab_current_ns(void) { struct net *ns = current->nsproxy->net_ns; #ifdef CONFIG_NET_NS if (ns) atomic_inc(&ns->passive); #endif return ns; }

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Al Viro2665.00%150.00%
Eric W. Biedermann1435.00%150.00%
Total40100.00%2100.00%


static const void *net_initial_ns(void) { return &init_net; }

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Eric W. Biedermann14100.00%1100.00%
Total14100.00%1100.00%


static const void *net_netlink_ns(struct sock *sk) { return sock_net(sk); }

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Eric W. Biedermann19100.00%1100.00%
Total19100.00%1100.00%

struct kobj_ns_type_operations net_ns_type_operations = { .type = KOBJ_NS_TYPE_NET, .current_may_mount = net_current_may_mount, .grab_current_ns = net_grab_current_ns, .netlink_ns = net_netlink_ns, .initial_ns = net_initial_ns, .drop_ns = net_drop_ns, }; EXPORT_SYMBOL_GPL(net_ns_type_operations);
static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) { struct net_device *dev = to_net_dev(d); int retval; /* pass interface to uevent. */ retval = add_uevent_var(env, "INTERFACE=%s", dev->name); if (retval) goto exit; /* pass ifindex to uevent. * ifindex is useful as it won't change (interface name may change) * and is what RtNetlink uses natively. */ retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); exit: return retval; }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger3550.72%116.67%
Eric Rannaud1420.29%116.67%
Jean Tourrilhes1014.49%116.67%
Kay Sievers710.14%233.33%
Greg Kroah-Hartman34.35%116.67%
Total69100.00%6100.00%

/* * netdev_release -- destroy and free a dead device. * Called when last reference to device kobject is gone. */
static void netdev_release(struct device *d) { struct net_device *dev = to_net_dev(d); BUG_ON(dev->reg_state != NETREG_RELEASED); kfree(dev->ifalias); netdev_freemem(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger3685.71%240.00%
Greg Kroah-Hartman49.52%120.00%
Eric Dumazet12.38%120.00%
Al Viro12.38%120.00%
Total42100.00%5100.00%


static const void *net_namespace(struct device *d) { struct net_device *dev = to_net_dev(d); return dev_net(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Eric W. Biedermann2689.66%150.00%
Geliang Tang310.34%150.00%
Total29100.00%2100.00%

static struct class net_class = { .name = "net", .dev_release = netdev_release, .dev_groups = net_class_groups, .dev_uevent = netdev_uevent, .ns_type = &net_ns_type_operations, .namespace = net_namespace, }; #ifdef CONFIG_OF_NET
static int of_dev_node_match(struct device *dev, const void *data) { int ret = 0; if (dev->parent) ret = dev->parent->of_node == data; return ret == 0 ? dev->of_node == data : ret; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Fainelli50100.00%1100.00%
Total50100.00%1100.00%

/* * of_find_net_device_by_node - lookup the net device for the device node * @np: OF device node * * Looks up the net_device structure corresponding with the device node. * If successful, returns a pointer to the net_device with the embedded * struct device refcount incremented by one, or NULL on failure. The * refcount must be dropped when done with the net_device. */
struct net_device *of_find_net_device_by_node(struct device_node *np) { struct device *dev; dev = class_find_device(&net_class, NULL, np, of_dev_node_match); if (!dev) return NULL; return to_net_dev(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Florian Fainelli45100.00%1100.00%
Total45100.00%1100.00%

EXPORT_SYMBOL(of_find_net_device_by_node); #endif /* Delete sysfs entries but hold kobject reference until after all * netdev references are gone. */
void netdev_unregister_kobject(struct net_device *ndev) { struct device *dev = &(ndev->dev); if (!atomic_read(&dev_net(ndev)->count)) dev_set_uevent_suppress(dev, 1); kobject_get(&dev->kobj); remove_queue_kobjects(ndev); pm_runtime_set_memalloc_noio(dev, false); device_del(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Andrey Vagin2130.88%216.67%
Stephen Hemminger1826.47%216.67%
Maneesh Soni1116.18%18.33%
Ming Lei710.29%18.33%
Tom Herbert45.88%216.67%
Américo Wang34.41%18.33%
Andrey Borzenkov22.94%18.33%
Greg Kroah-Hartman11.47%18.33%
Eric W. Biedermann11.47%18.33%
Total68100.00%12100.00%

/* Create sysfs entries for network device. */
int netdev_register_kobject(struct net_device *ndev) { struct device *dev = &(ndev->dev); const struct attribute_group **groups = ndev->sysfs_groups; int error = 0; device_initialize(dev); dev->class = &net_class; dev->platform_data = ndev; dev->groups = groups; dev_set_name(dev, "%s", ndev->name); #ifdef CONFIG_SYSFS /* Allow for a device specific group */ if (*groups) groups++; *groups++ = &netstat_group; #if IS_ENABLED(CONFIG_WIRELESS_EXT) || IS_ENABLED(CONFIG_CFG80211) if (ndev->ieee80211_ptr) *groups++ = &wireless_group; #if IS_ENABLED(CONFIG_WIRELESS_EXT) else if (ndev->wireless_handlers) *groups++ = &wireless_group; #endif #endif #endif /* CONFIG_SYSFS */ error = device_add(dev); if (error) return error; error = register_queue_kobjects(ndev); if (error) { device_del(dev); return error; } pm_runtime_set_memalloc_noio(dev, true); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger5730.32%425.00%
Johannes Berg4825.53%212.50%
Tom Herbert3719.68%212.50%
Eric W. Biedermann1910.11%318.75%
Greg Kroah-Hartman105.32%16.25%
Américo Wang84.26%16.25%
Ming Lei73.72%16.25%
Kay Sievers10.53%16.25%
David Brownell10.53%16.25%
Total188100.00%16100.00%


int netdev_class_create_file_ns(struct class_attribute *class_attr, const void *ns) { return class_create_file_ns(&net_class, class_attr, ns); }

Contributors

PersonTokensPropCommitsCommitProp
Jay Vosburgh1765.38%150.00%
Tejun Heo934.62%150.00%
Total26100.00%2100.00%

EXPORT_SYMBOL(netdev_class_create_file_ns);
void netdev_class_remove_file_ns(struct class_attribute *class_attr, const void *ns) { class_remove_file_ns(&net_class, class_attr, ns); }

Contributors

PersonTokensPropCommitsCommitProp
Jay Vosburgh1664.00%150.00%
Tejun Heo936.00%150.00%
Total25100.00%2100.00%

EXPORT_SYMBOL(netdev_class_remove_file_ns);
int __init netdev_kobject_init(void) { kobj_ns_type_register(&net_ns_type_operations); return class_register(&net_class); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger1361.90%125.00%
Eric W. Biedermann733.33%250.00%
Daniel Borkmann14.76%125.00%
Total21100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Tom Herbert246533.85%86.30%
Stephen Hemminger125417.22%1612.60%
Greg Kroah-Hartman3194.38%21.57%
Jiri Pirko2773.80%53.94%
John Fastabend2633.61%21.57%
Eric W. Biedermann2483.41%86.30%
Eric Dumazet2463.38%118.66%
Alexander Duyck1712.35%32.36%
Andy Gospodarek1692.32%10.79%
Stefan Rompf1662.28%10.79%
David Decotigny1652.27%32.36%
Weilong Chen1472.02%10.79%
David Ahern1081.48%10.79%
Florian Fainelli1081.48%10.79%
Tom Gundersen951.30%10.79%
Johannes Berg941.29%32.36%
Michael Dalton781.07%10.79%
Andrey Vagin781.07%21.57%
Anuradha Karuppiah761.04%10.79%
Ben Hutchings741.02%21.57%
Américo Wang700.96%10.79%
Vlad Dogaru670.92%10.79%
Jason (Hui) Wang560.77%10.79%
Tejun Heo510.70%32.36%
Andrew Morton510.70%10.79%
Nicolas Dichtel470.65%10.79%
Jay Vosburgh370.51%10.79%
Nikolay Aleksandrov370.51%10.79%
Al Viro350.48%32.36%
Scott Feldman230.32%21.57%
Xi Wang230.32%10.79%
Kay Sievers190.26%43.15%
Ming Lei170.23%10.79%
Eric Rannaud140.19%10.79%
Amir Vadai120.16%10.79%
Maneesh Soni110.15%10.79%
Linus Torvalds110.15%10.79%
Jean Tourrilhes100.14%10.79%
Jarod Wilson100.14%10.79%
David Woodhouse90.12%10.79%
Sasha Levin80.11%10.79%
Pavel Emelyanov60.08%32.36%
Stefan Assmann60.08%10.79%
Shuah Khan60.08%10.79%
Ido Schimmel50.07%10.79%
Lai Jiangshan40.05%10.79%
Geliang Tang30.04%10.79%
Paul Gortmaker30.04%10.79%
Ingo Molnar30.04%10.79%
Thadeu Lima de Souza Cascardo30.04%10.79%
Vadim Lobanov30.04%10.79%
Randy Dunlap30.04%10.79%
Ben Dooks30.04%10.79%
Michael Chan20.03%10.79%
Andrey Borzenkov20.03%10.79%
Hideaki Yoshifuji / 吉藤英明20.03%10.79%
Stephen Rothwell20.03%10.79%
Russell King10.01%10.79%
Adrian Bunk10.01%10.79%
Alexander Stein10.01%10.79%
David Brownell10.01%10.79%
Daniel Borkmann10.01%10.79%
Jan Engelhardt10.01%10.79%
Paul Bolle10.01%10.79%
Total7282100.00%127100.00%
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