cregit-Linux how code gets into the kernel

Release 4.11 net/ipv6/addrconf.c

Directory: net/ipv6
/*
 *      IPv6 Address [auto]configuration
 *      Linux INET6 implementation
 *
 *      Authors:
 *      Pedro Roque             <roque@di.fc.ul.pt>
 *      Alexey Kuznetsov        <kuznet@ms2.inr.ac.ru>
 *
 *      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.
 */

/*
 *      Changes:
 *
 *      Janos Farkas                    :       delete timer on ifdown
 *      <chexum@bankinf.banki.hu>
 *      Andi Kleen                      :       kill double kfree on module
 *                                              unload.
 *      Maciej W. Rozycki               :       FDDI support
 *      sekiya@USAGI                    :       Don't send too many RS
 *                                              packets.
 *      yoshfuji@USAGI                  :       Fixed interval between DAD
 *                                              packets.
 *      YOSHIFUJI Hideaki @USAGI        :       improved accuracy of
 *                                              address validation timer.
 *      YOSHIFUJI Hideaki @USAGI        :       Privacy Extensions (RFC3041)
 *                                              support.
 *      Yuji SEKIYA @USAGI              :       Don't assign a same IPv6
 *                                              address on a same interface.
 *      YOSHIFUJI Hideaki @USAGI        :       ARCnet support
 *      YOSHIFUJI Hideaki @USAGI        :       convert /proc/net/if_inet6 to
 *                                              seq_file.
 *      YOSHIFUJI Hideaki @USAGI        :       improved source address
 *                                              selection; consider scope,
 *                                              status etc.
 */


#define pr_fmt(fmt) "IPv6: " fmt

#include <linux/errno.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched/signal.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/inet.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
#include <linux/if_addr.h>
#include <linux/if_arp.h>
#include <linux/if_arcnet.h>
#include <linux/if_infiniband.h>
#include <linux/route.h>
#include <linux/inetdevice.h>
#include <linux/init.h>
#include <linux/slab.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
#include <linux/capability.h>
#include <linux/delay.h>
#include <linux/notifier.h>
#include <linux/string.h>
#include <linux/hash.h>

#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/snmp.h>

#include <net/6lowpan.h>
#include <net/firewire.h>
#include <net/ipv6.h>
#include <net/protocol.h>
#include <net/ndisc.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <net/tcp.h>
#include <net/ip.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <net/l3mdev.h>
#include <linux/if_tunnel.h>
#include <linux/rtnetlink.h>
#include <linux/netconf.h>
#include <linux/random.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>

#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/export.h>

/* Set to 3 to get tracing... */

#define ACONF_DEBUG 2

#if ACONF_DEBUG >= 3

#define ADBG(fmt, ...) printk(fmt, ##__VA_ARGS__)
#else

#define ADBG(fmt, ...) do { if (0) printk(fmt, ##__VA_ARGS__); } while (0)
#endif


#define	INFINITY_LIFE_TIME	0xFFFFFFFF


#define IPV6_MAX_STRLEN \
	sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")


static inline u32 cstamp_delta(unsigned long cstamp) { return (cstamp - INITIAL_JIFFIES) * 100UL / HZ; }

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Thomas Graf2090.91%150.00%
Shirley Ma29.09%150.00%
Total22100.00%2100.00%


static inline s32 rfc3315_s14_backoff_init(s32 irt) { /* multiply 'initial retransmission time' by 0.9 .. 1.1 */ u64 tmp = (900000 + prandom_u32() % 200001) * (u64)irt; do_div(tmp, 1000000); return (s32)tmp; }

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PersonTokensPropCommitsCommitProp
Maciej Żenczykowski41100.00%1100.00%
Total41100.00%1100.00%


static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt) { /* multiply 'retransmission timeout' by 1.9 .. 2.1 */ u64 tmp = (1900000 + prandom_u32() % 200001) * (u64)rt; do_div(tmp, 1000000); if ((s32)tmp > mrt) { /* multiply 'maximum retransmission time' by 0.9 .. 1.1 */ tmp = (900000 + prandom_u32() % 200001) * (u64)mrt; do_div(tmp, 1000000); } return (s32)tmp; }

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PersonTokensPropCommitsCommitProp
Maciej Żenczykowski79100.00%1100.00%
Total79100.00%1100.00%

#ifdef CONFIG_SYSCTL static int addrconf_sysctl_register(struct inet6_dev *idev); static void addrconf_sysctl_unregister(struct inet6_dev *idev); #else
static inline int addrconf_sysctl_register(struct inet6_dev *idev) { return 0; }

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PersonTokensPropCommitsCommitProp
Pavel Emelyanov960.00%150.00%
Américo Wang640.00%150.00%
Total15100.00%2100.00%


static inline void addrconf_sysctl_unregister(struct inet6_dev *idev) { }

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PersonTokensPropCommitsCommitProp
Pavel Emelyanov11100.00%1100.00%
Total11100.00%1100.00%

#endif static void ipv6_regen_rndid(struct inet6_dev *idev); static void ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr); static int ipv6_generate_eui64(u8 *eui, struct net_device *dev); static int ipv6_count_addresses(struct inet6_dev *idev); static int ipv6_generate_stable_address(struct in6_addr *addr, u8 dad_count, const struct inet6_dev *idev); /* * Configured unicast address hash table */ static struct hlist_head inet6_addr_lst[IN6_ADDR_HSIZE]; static DEFINE_SPINLOCK(addrconf_hash_lock); static void addrconf_verify(void); static void addrconf_verify_rtnl(void); static void addrconf_verify_work(struct work_struct *); static struct workqueue_struct *addrconf_wq; static DECLARE_DELAYED_WORK(addr_chk_work, addrconf_verify_work); static void addrconf_join_anycast(struct inet6_ifaddr *ifp); static void addrconf_leave_anycast(struct inet6_ifaddr *ifp); static void addrconf_type_change(struct net_device *dev, unsigned long event); static int addrconf_ifdown(struct net_device *dev, int how); static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx, int plen, const struct net_device *dev, u32 flags, u32 noflags); static void addrconf_dad_start(struct inet6_ifaddr *ifp); static void addrconf_dad_work(struct work_struct *w); static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id); static void addrconf_dad_run(struct inet6_dev *idev); static void addrconf_rs_timer(unsigned long data); static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa); static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa); static void inet6_prefix_notify(int event, struct inet6_dev *idev, struct prefix_info *pinfo); static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, struct net_device *dev); static struct ipv6_devconf ipv6_devconf __read_mostly = { .forwarding = 0, .hop_limit = IPV6_DEFAULT_HOPLIMIT, .mtu6 = IPV6_MIN_MTU, .accept_ra = 1, .accept_redirects = 1, .autoconf = 1, .force_mld_version = 0, .mldv1_unsolicited_report_interval = 10 * HZ, .mldv2_unsolicited_report_interval = HZ, .dad_transmits = 1, .rtr_solicits = MAX_RTR_SOLICITATIONS, .rtr_solicit_interval = RTR_SOLICITATION_INTERVAL, .rtr_solicit_max_interval = RTR_SOLICITATION_MAX_INTERVAL, .rtr_solicit_delay = MAX_RTR_SOLICITATION_DELAY, .use_tempaddr = 0, .temp_valid_lft = TEMP_VALID_LIFETIME, .temp_prefered_lft = TEMP_PREFERRED_LIFETIME, .regen_max_retry = REGEN_MAX_RETRY, .max_desync_factor = MAX_DESYNC_FACTOR, .max_addresses = IPV6_MAX_ADDRESSES, .accept_ra_defrtr = 1, .accept_ra_from_local = 0, .accept_ra_min_hop_limit= 1, .accept_ra_pinfo = 1, #ifdef CONFIG_IPV6_ROUTER_PREF .accept_ra_rtr_pref = 1, .rtr_probe_interval = 60 * HZ, #ifdef CONFIG_IPV6_ROUTE_INFO .accept_ra_rt_info_max_plen = 0, #endif #endif .proxy_ndp = 0, .accept_source_route = 0, /* we do not accept RH0 by default. */ .disable_ipv6 = 0, .accept_dad = 1, .suppress_frag_ndisc = 1, .accept_ra_mtu = 1, .stable_secret = { .initialized = false, }, .use_oif_addrs_only = 0, .ignore_routes_with_linkdown = 0, .keep_addr_on_down = 0, .seg6_enabled = 0, #ifdef CONFIG_IPV6_SEG6_HMAC .seg6_require_hmac = 0, #endif .enhanced_dad = 1, .addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64, }; static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = { .forwarding = 0, .hop_limit = IPV6_DEFAULT_HOPLIMIT, .mtu6 = IPV6_MIN_MTU, .accept_ra = 1, .accept_redirects = 1, .autoconf = 1, .force_mld_version = 0, .mldv1_unsolicited_report_interval = 10 * HZ, .mldv2_unsolicited_report_interval = HZ, .dad_transmits = 1, .rtr_solicits = MAX_RTR_SOLICITATIONS, .rtr_solicit_interval = RTR_SOLICITATION_INTERVAL, .rtr_solicit_max_interval = RTR_SOLICITATION_MAX_INTERVAL, .rtr_solicit_delay = MAX_RTR_SOLICITATION_DELAY, .use_tempaddr = 0, .temp_valid_lft = TEMP_VALID_LIFETIME, .temp_prefered_lft = TEMP_PREFERRED_LIFETIME, .regen_max_retry = REGEN_MAX_RETRY, .max_desync_factor = MAX_DESYNC_FACTOR, .max_addresses = IPV6_MAX_ADDRESSES, .accept_ra_defrtr = 1, .accept_ra_from_local = 0, .accept_ra_min_hop_limit= 1, .accept_ra_pinfo = 1, #ifdef CONFIG_IPV6_ROUTER_PREF .accept_ra_rtr_pref = 1, .rtr_probe_interval = 60 * HZ, #ifdef CONFIG_IPV6_ROUTE_INFO .accept_ra_rt_info_max_plen = 0, #endif #endif .proxy_ndp = 0, .accept_source_route = 0, /* we do not accept RH0 by default. */ .disable_ipv6 = 0, .accept_dad = 1, .suppress_frag_ndisc = 1, .accept_ra_mtu = 1, .stable_secret = { .initialized = false, }, .use_oif_addrs_only = 0, .ignore_routes_with_linkdown = 0, .keep_addr_on_down = 0, .seg6_enabled = 0, #ifdef CONFIG_IPV6_SEG6_HMAC .seg6_require_hmac = 0, #endif .enhanced_dad = 1, .addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64, }; /* Check if a valid qdisc is available */
static inline bool addrconf_qdisc_ok(const struct net_device *dev) { return !qdisc_tx_is_noop(dev); }

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PersonTokensPropCommitsCommitProp
Mitsuru Chinen1365.00%150.00%
David S. Miller735.00%150.00%
Total20100.00%2100.00%


static void addrconf_del_rs_timer(struct inet6_dev *idev) { if (del_timer(&idev->rs_timer)) __in6_dev_put(idev); }

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PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa2492.31%150.00%
Linus Torvalds (pre-git)27.69%150.00%
Total26100.00%2100.00%


static void addrconf_del_dad_work(struct inet6_ifaddr *ifp) { if (cancel_delayed_work(&ifp->dad_work)) __in6_ifa_put(ifp); }

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PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2180.77%133.33%
Hannes Frederic Sowa519.23%266.67%
Total26100.00%3100.00%


static void addrconf_mod_rs_timer(struct inet6_dev *idev, unsigned long when) { if (!timer_pending(&idev->rs_timer)) in6_dev_hold(idev); mod_timer(&idev->rs_timer, jiffies + when); }

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PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa4297.67%150.00%
Linus Torvalds (pre-git)12.33%150.00%
Total43100.00%2100.00%


static void addrconf_mod_dad_work(struct inet6_ifaddr *ifp, unsigned long delay) { if (!delayed_work_pending(&ifp->dad_work)) in6_ifa_hold(ifp); mod_delayed_work(addrconf_wq, &ifp->dad_work, delay); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3172.09%133.33%
Hannes Frederic Sowa1227.91%266.67%
Total43100.00%3100.00%


static int snmp6_alloc_dev(struct inet6_dev *idev) { int i; idev->stats.ipv6 = alloc_percpu(struct ipstats_mib); if (!idev->stats.ipv6) goto err_ip; for_each_possible_cpu(i) { struct ipstats_mib *addrconf_stats; addrconf_stats = per_cpu_ptr(idev->stats.ipv6, i); u64_stats_init(&addrconf_stats->syncp); } idev->stats.icmpv6dev = kzalloc(sizeof(struct icmpv6_mib_device), GFP_KERNEL); if (!idev->stats.icmpv6dev) goto err_icmp; idev->stats.icmpv6msgdev = kzalloc(sizeof(struct icmpv6msg_mib_device), GFP_KERNEL); if (!idev->stats.icmpv6msgdev) goto err_icmpmsg; return 0; err_icmpmsg: kfree(idev->stats.icmpv6dev); err_icmp: free_percpu(idev->stats.ipv6); err_ip: return -ENOMEM; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu5031.45%114.29%
Eric Dumazet3823.90%228.57%
John Stultz3522.01%114.29%
David L Stevens2213.84%114.29%
Américo Wang127.55%114.29%
Pavel Emelyanov21.26%114.29%
Total159100.00%7100.00%


static struct inet6_dev *ipv6_add_dev(struct net_device *dev) { struct inet6_dev *ndev; int err = -ENOMEM; ASSERT_RTNL(); if (dev->mtu < IPV6_MIN_MTU) return ERR_PTR(-EINVAL); ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL); if (!ndev) return ERR_PTR(err); rwlock_init(&ndev->lock); ndev->dev = dev; INIT_LIST_HEAD(&ndev->addr_list); setup_timer(&ndev->rs_timer, addrconf_rs_timer, (unsigned long)ndev); memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf)); if (ndev->cnf.stable_secret.initialized) ndev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; else ndev->cnf.addr_gen_mode = ipv6_devconf_dflt.addr_gen_mode; ndev->cnf.mtu6 = dev->mtu; ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl); if (!ndev->nd_parms) { kfree(ndev); return ERR_PTR(err); } if (ndev->cnf.forwarding) dev_disable_lro(dev); /* We refer to the device */ dev_hold(dev); if (snmp6_alloc_dev(ndev) < 0) { ADBG(KERN_WARNING "%s: cannot allocate memory for statistics; dev=%s.\n", __func__, dev->name); neigh_parms_release(&nd_tbl, ndev->nd_parms); dev_put(dev); kfree(ndev); return ERR_PTR(err); } if (snmp6_register_dev(ndev) < 0) { ADBG(KERN_WARNING "%s: cannot create /proc/net/dev_snmp6/%s\n", __func__, dev->name); goto err_release; } /* One reference from device. */ in6_dev_hold(ndev); if (dev->flags & (IFF_NOARP | IFF_LOOPBACK)) ndev->cnf.accept_dad = -1; #if IS_ENABLED(CONFIG_IPV6_SIT) if (dev->type == ARPHRD_SIT && (dev->priv_flags & IFF_ISATAP)) { pr_info("%s: Disabled Multicast RS\n", dev->name); ndev->cnf.rtr_solicits = 0; } #endif INIT_LIST_HEAD(&ndev->tempaddr_list); ndev->desync_factor = U32_MAX; if ((dev->flags&IFF_LOOPBACK) || dev->type == ARPHRD_TUNNEL || dev->type == ARPHRD_TUNNEL6 || dev->type == ARPHRD_SIT || dev->type == ARPHRD_NONE) { ndev->cnf.use_tempaddr = -1; } else ipv6_regen_rndid(ndev); ndev->token = in6addr_any; if (netif_running(dev) && addrconf_qdisc_ok(dev)) ndev->if_flags |= IF_READY; ipv6_mc_init_dev(ndev); ndev->tstamp = jiffies; err = addrconf_sysctl_register(ndev); if (err) { ipv6_mc_destroy_dev(ndev); snmp6_unregister_dev(ndev); goto err_release; } /* protected by rtnl_lock */ rcu_assign_pointer(dev->ip6_ptr, ndev); /* Join interface-local all-node multicast group */ ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allnodes); /* Join all-node multicast group */ ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes); /* Join all-router multicast group if forwarding is set */ if (ndev->cnf.forwarding && (dev->flags & IFF_MULTICAST)) ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters); return ndev; err_release: neigh_parms_release(&nd_tbl, ndev->nd_parms); ndev->dead = 1; in6_dev_finish_destroy(ndev); return ERR_PTR(err); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明16729.09%918.00%
Linus Torvalds (pre-git)12421.60%816.00%
Américo Wang7212.54%24.00%
Hannes Frederic Sowa478.19%36.00%
Li Wei254.36%12.00%
Herbert Xu223.83%24.00%
Stephen Hemminger162.79%24.00%
Ben Hutchings132.26%12.00%
David L Stevens91.57%12.00%
Jiri Bohac71.22%24.00%
Felix Jia71.22%12.00%
Daniel Borkmann61.05%24.00%
Shirley Ma61.05%12.00%
Sabrina Dubroca50.87%12.00%
David S. Miller50.87%12.00%
Roy Li50.87%12.00%
Rémi Denis-Courmont50.87%12.00%
Linus Torvalds50.87%12.00%
Pavel Emelyanov50.87%12.00%
Andrew Morton40.70%12.00%
Ding Tianhong40.70%12.00%
Joe Perches30.52%12.00%
Ingo Oeser30.52%12.00%
Joerg Roedel30.52%12.00%
Ian Morris20.35%12.00%
Harvey Harrison20.35%12.00%
Eric Dumazet10.17%12.00%
Mitsuru Chinen10.17%12.00%
Total574100.00%50100.00%


static struct inet6_dev *ipv6_find_idev(struct net_device *dev) { struct inet6_dev *idev; ASSERT_RTNL(); idev = __in6_dev_get(dev); if (!idev) { idev = ipv6_add_dev(dev); if (IS_ERR(idev)) return NULL; } if (dev->flags&IFF_UP) ipv6_mc_up(idev); return idev; }

Contributors

PersonTokensPropCommitsCommitProp
David L Stevens3652.94%114.29%
Linus Torvalds (pre-git)1927.94%342.86%
Stephen Hemminger913.24%114.29%
Américo Wang34.41%114.29%
Hideaki Yoshifuji / 吉藤英明11.47%114.29%
Total68100.00%7100.00%


static int inet6_netconf_msgsize_devconf(int type) { int size = NLMSG_ALIGN(sizeof(struct netconfmsg)) + nla_total_size(4); /* NETCONFA_IFINDEX */ bool all = false; if (type == NETCONFA_ALL) all = true; if (all || type == NETCONFA_FORWARDING) size += nla_total_size(4); #ifdef CONFIG_IPV6_MROUTE if (all || type == NETCONFA_MC_FORWARDING) size += nla_total_size(4); #endif if (all || type == NETCONFA_PROXY_NEIGH) size += nla_total_size(4); if (all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) size += nla_total_size(4); return size; }

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PersonTokensPropCommitsCommitProp
Nicolas Dichtel6054.55%342.86%
Zhang Shengju1715.45%114.29%
Andy Gospodarek1412.73%114.29%
Stephen Hemminger1412.73%114.29%
David S. Miller54.55%114.29%
Total110100.00%7100.00%


static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex, struct ipv6_devconf *devconf, u32 portid, u32 seq, int event, unsigned int flags, int type) { struct nlmsghdr *nlh; struct netconfmsg *ncm; bool all = false; nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg), flags); if (!nlh) return -EMSGSIZE; if (type == NETCONFA_ALL) all = true; ncm = nlmsg_data(nlh); ncm->ncm_family = AF_INET6; if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0) goto nla_put_failure; if ((all || type == NETCONFA_FORWARDING) && nla_put_s32(skb, NETCONFA_FORWARDING, devconf->forwarding) < 0) goto nla_put_failure; #ifdef CONFIG_IPV6_MROUTE if ((all || type == NETCONFA_MC_FORWARDING) && nla_put_s32(skb, NETCONFA_MC_FORWARDING, devconf->mc_forwarding) < 0) goto nla_put_failure; #endif if ((all || type == NETCONFA_PROXY_NEIGH) && nla_put_s32(skb, NETCONFA_PROXY_NEIGH, devconf->proxy_ndp) < 0) goto nla_put_failure; if ((all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) && nla_put_s32(skb, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, devconf->ignore_routes_with_linkdown) < 0) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel17368.92%333.33%
Andy Gospodarek259.96%111.11%
Stephen Hemminger259.96%111.11%
Zhang Shengju197.57%111.11%
David S. Miller51.99%111.11%
Johannes Berg31.20%111.11%
Ian Morris10.40%111.11%
Total251100.00%9100.00%


void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex, struct ipv6_devconf *devconf) { struct sk_buff *skb; int err = -ENOBUFS; skb = nlmsg_new(inet6_netconf_msgsize_devconf(type), GFP_KERNEL); if (!skb) goto errout; err = inet6_netconf_fill_devconf(skb, ifindex, devconf, 0, 0, RTM_NEWNETCONF, 0, type); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_IPV6_NETCONF, NULL, GFP_KERNEL); return; errout: rtnl_set_sk_err(net, RTNLGRP_IPV6_NETCONF, err); }

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PersonTokensPropCommitsCommitProp
Nicolas Dichtel12297.60%133.33%
Eric Dumazet21.60%133.33%
Ian Morris10.80%133.33%
Total125100.00%3100.00%

static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = { [NETCONFA_IFINDEX] = { .len = sizeof(int) }, [NETCONFA_FORWARDING] = { .len = sizeof(int) }, [NETCONFA_PROXY_NEIGH] = { .len = sizeof(int) }, [NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN] = { .len = sizeof(int) }, };
static int inet6_netconf_get_devconf(struct sk_buff *in_skb, struct nlmsghdr *nlh) { struct net *net = sock_net(in_skb->sk); struct nlattr *tb[NETCONFA_MAX+1]; struct netconfmsg *ncm; struct sk_buff *skb; struct ipv6_devconf *devconf; struct inet6_dev *in6_dev; struct net_device *dev; int ifindex; int err; err = nlmsg_parse(nlh, sizeof(*ncm), tb, NETCONFA_MAX, devconf_ipv6_policy); if (err < 0) goto errout; err = -EINVAL; if (!tb[NETCONFA_IFINDEX]) goto errout; ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]); switch (ifindex) { case NETCONFA_IFINDEX_ALL: devconf = net->ipv6.devconf_all; break; case NETCONFA_IFINDEX_DEFAULT: devconf = net->ipv6.devconf_dflt; break; default: dev = __dev_get_by_index(net, ifindex); if (!dev) goto errout; in6_dev = __in6_dev_get(dev); if (!in6_dev) goto errout; devconf = &in6_dev->cnf; break; } err = -ENOBUFS; skb = nlmsg_new(inet6_netconf_msgsize_devconf(NETCONFA_ALL), GFP_ATOMIC); if (!skb) goto errout; err = inet6_netconf_fill_devconf(skb, ifindex, devconf, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWNETCONF, 0, NETCONFA_ALL); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); errout: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel28797.95%125.00%
Ian Morris31.02%125.00%
Zhang Shengju20.68%125.00%
Anton Protopopov10.34%125.00%
Total293100.00%4100.00%


static int inet6_netconf_dump_devconf(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); int h, s_h; int idx, s_idx; struct net_device *dev; struct inet6_dev *idev; struct hlist_head *head; s_h = cb->args[0]; s_idx = idx = cb->args[1]; for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { idx = 0; head = &net->dev_index_head[h]; rcu_read_lock(); cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq; hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; idev = __in6_dev_get(dev); if (!idev) goto cont; if (inet6_netconf_fill_devconf(skb, dev->ifindex, &idev->cnf, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, NETCONFA_ALL) < 0) { rcu_read_unlock(); goto done; } nl_dump_check_consistent(cb, nlmsg_hdr(skb)); cont: idx++; } rcu_read_unlock(); } if (h == NETDEV_HASHENTRIES) { if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_ALL, net->ipv6.devconf_all, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, NETCONFA_ALL) < 0) goto done; else h++; } if (h == NETDEV_HASHENTRIES + 1) { if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_DEFAULT, net->ipv6.devconf_dflt, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, NETCONFA_ALL) < 0) goto done; else h++; } done: cb->args[0] = h; cb->args[1] = idx; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel35398.33%250.00%
Johannes Berg30.84%125.00%
Zhang Shengju30.84%125.00%
Total359100.00%4100.00%

#ifdef CONFIG_SYSCTL
static void dev_forward_change(struct inet6_dev *idev) { struct net_device *dev; struct inet6_ifaddr *ifa; if (!idev) return; dev = idev->dev; if (idev->cnf.forwarding) dev_disable_lro(dev); if (dev->flags & IFF_MULTICAST) { if (idev->cnf.forwarding) { ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters); ipv6_dev_mc_inc(dev, &in6addr_interfacelocal_allrouters); ipv6_dev_mc_inc(dev, &in6addr_sitelocal_allrouters); } else { ipv6_dev_mc_dec(dev, &in6addr_linklocal_allrouters); ipv6_dev_mc_dec(dev, &in6addr_interfacelocal_allrouters); ipv6_dev_mc_dec(dev, &in6addr_sitelocal_allrouters); } } list_for_each_entry(ifa, &idev->addr_list, if_list) { if (ifa->flags&IFA_F_TENTATIVE) continue; if (idev->cnf.forwarding) addrconf_join_anycast(ifa); else addrconf_leave_anycast(ifa); } inet6_netconf_notify_devconf(dev_net(dev), NETCONFA_FORWARDING, dev->ifindex, &idev->cnf); }

Contributors

PersonTokensPropCommitsCommitProp
David L Stevens7241.38%111.11%
Hannes Frederic Sowa3620.69%111.11%
Nicolas Dichtel1910.92%111.11%
Ben Hutchings137.47%111.11%
Linus Torvalds (pre-git)116.32%111.11%
Michał Wróbel95.17%111.11%
Stephen Hemminger84.60%111.11%
Hideaki Yoshifuji / 吉藤英明63.45%222.22%
Total174100.00%9100.00%


static void addrconf_forward_change(struct net *net, __s32 newf) { struct net_device *dev; struct inet6_dev *idev; for_each_netdev(net, dev) { idev = __in6_dev_get(dev); if (idev) { int changed = (!idev->cnf.forwarding) ^ (!newf); idev->cnf.forwarding = newf; if (changed) dev_forward_change(idev); } } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3139.24%433.33%
Hideaki Yoshifuji / 吉藤英明2430.38%18.33%
Pavel Emelyanov1316.46%325.00%
David L Stevens810.13%18.33%
Ben Hutchings11.27%18.33%
Eric Dumazet11.27%18.33%
Eric W. Biedermann11.27%18.33%
Total79100.00%12100.00%


static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int newf) { struct net *net; int old; if (!rtnl_trylock()) return restart_syscall(); net = (struct net *)table->extra2; old = *p; *p = newf; if (p == &net->ipv6.devconf_dflt->forwarding) { if ((!newf) ^ (!old)) inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_DEFAULT, net->ipv6.devconf_dflt); rtnl_unlock(); return 0; } if (p == &net->ipv6.devconf_all->forwarding) { int old_dflt = net->ipv6.devconf_dflt->forwarding; net->ipv6.devconf_dflt->forwarding = newf; if ((!newf) ^ (!old_dflt)) inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_DEFAULT, net->ipv6.devconf_dflt); addrconf_forward_change(net, newf); if ((!newf) ^ (!old)) inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_ALL, net->ipv6.devconf_all); } else if ((!newf) ^ (!old)) dev_forward_change((struct inet6_dev *)table->extra1); rtnl_unlock(); if (newf) rt6_purge_dflt_routers(net); return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Pavel Emelyanov10643.80%436.36%
Nicolas Dichtel9238.02%218.18%
Francesco Ruggeri2911.98%19.09%
Stephen Hemminger62.48%19.09%
Daniel Lezcano31.24%19.09%
Eric W. Biedermann31.24%19.09%
Ben Hutchings31.24%19.09%
Total242100.00%11100.00%


static void addrconf_linkdown_change(struct net *net, __s32 newf) { struct net_device *dev; struct inet6_dev *idev; for_each_netdev(net, dev) { idev = __in6_dev_get(dev); if (idev) { int changed = (!idev->cnf.ignore_routes_with_linkdown) ^ (!newf); idev->cnf.ignore_routes_with_linkdown = newf; if (changed) inet6_netconf_notify_devconf(dev_net(dev), NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, dev->ifindex, &idev->cnf); } } }

Contributors

PersonTokensPropCommitsCommitProp
Andy Gospodarek93100.00%1100.00%
Total93100.00%1100.00%


static int addrconf_fixup_linkdown(struct ctl_table *table, int *p, int newf) { struct net *net; int old; if (!rtnl_trylock()) return restart_syscall(); net = (struct net *)table->extra2; old = *p; *p = newf; if (p == &net->ipv6.devconf_dflt->ignore_routes_with_linkdown) { if ((!newf) ^ (!old)) inet6_netconf_notify_devconf(net, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, NETCONFA_IFINDEX_DEFAULT, net->ipv6.devconf_dflt); rtnl_unlock(); return 0; } if (p == &net->ipv6.devconf_all->ignore_routes_with_linkdown) { net->ipv6.devconf_dflt->ignore_routes_with_linkdown = newf; addrconf_linkdown_change(net, newf); if ((!newf) ^ (!old)) inet6_netconf_notify_devconf(net, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, NETCONFA_IFINDEX_ALL, net->ipv6.devconf_all); } rtnl_unlock(); return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Andy Gospodarek170100.00%1100.00%
Total170100.00%1100.00%

#endif /* Nobody refers to this ifaddr, destroy it */
void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp) { WARN_ON(!hlist_unhashed(&ifp->addr_lst)); #ifdef NET_REFCNT_DEBUG pr_debug("%s\n", __func__); #endif in6_dev_put(ifp->idev); if (cancel_delayed_work(&ifp->dad_work)) pr_notice("delayed DAD work was pending while freeing ifa=%p\n", ifp); if (ifp->state != INET6_IFADDR_STATE_DEAD) { pr_warn("Freeing alive inet6 address %p\n", ifp); return; } ip6_rt_put(ifp->rt); kfree_rcu(ifp, rcu); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5662.22%320.00%
Stephen Hemminger88.89%320.00%
Hideaki Yoshifuji / 吉藤英明66.67%16.67%
Linus Torvalds55.56%16.67%
Joe Perches55.56%213.33%
Herbert Xu33.33%16.67%
Hannes Frederic Sowa33.33%16.67%
Lai Jiangshan22.22%16.67%
Ilpo Järvinen11.11%16.67%
Américo Wang11.11%16.67%
Total90100.00%15100.00%


static void ipv6_link_dev_addr(struct inet6_dev *idev, struct inet6_ifaddr *ifp) { struct list_head *p; int ifp_scope = ipv6_addr_src_scope(&ifp->addr); /* * Each device address list is sorted in order of scope - * global before linklocal. */ list_for_each(p, &idev->addr_list) { struct inet6_ifaddr *ifa = list_entry(p, struct inet6_ifaddr, if_list); if (ifp_scope >= ipv6_addr_src_scope(&ifa->addr)) break; } list_add_tail(&ifp->if_list, p); }

Contributors

PersonTokensPropCommitsCommitProp
Brian Haley3139.24%125.00%
Stephen Hemminger2936.71%125.00%
Hideaki Yoshifuji / 吉藤英明1822.78%125.00%
David S. Miller11.27%125.00%
Total79100.00%4100.00%


static u32 inet6_addr_hash(const struct in6_addr *addr) { return hash_32(ipv6_addr_hash(addr), IN6_ADDR_HSIZE_SHIFT); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明1460.87%133.33%
Eric Dumazet626.09%133.33%
Stephen Hemminger313.04%133.33%
Total23100.00%3100.00%

/* On success it returns ifp with increased reference count */
static struct inet6_ifaddr * ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, const struct in6_addr *peer_addr, int pfxlen, int scope, u32 flags, u32 valid_lft, u32 prefered_lft) { struct inet6_ifaddr *ifa = NULL; struct rt6_info *rt; unsigned int hash; int err = 0; int addr_type = ipv6_addr_type(addr); if (addr_type == IPV6_ADDR_ANY || addr_type & IPV6_ADDR_MULTICAST || (!(idev->dev->flags & IFF_LOOPBACK) && addr_type & IPV6_ADDR_LOOPBACK)) return ERR_PTR(-EADDRNOTAVAIL); rcu_read_lock_bh(); if (idev->dead) { err = -ENODEV; /*XXX*/ goto out2; } if (idev->cnf.disable_ipv6) { err = -EACCES; goto out2; } spin_lock(&addrconf_hash_lock); /* Ignore adding duplicate addresses on an interface */ if (ipv6_chk_same_addr(dev_net(idev->dev), addr, idev->dev)) { ADBG("ipv6_add_addr: already assigned\n"); err = -EEXIST; goto out; } ifa = kzalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC); if (!ifa) { ADBG("ipv6_add_addr: malloc failed\n"); err = -ENOBUFS; goto out; } rt = addrconf_dst_alloc(idev, addr, false); if (IS_ERR(rt)) { err = PTR_ERR(rt); goto out; } neigh_parms_data_state_setall(idev->nd_parms); ifa->addr = *addr; if (peer_addr) ifa->peer_addr = *peer_addr; spin_lock_init(&ifa->lock); INIT_DELAYED_WORK(&ifa->dad_work, addrconf_dad_work); INIT_HLIST_NODE(&ifa->addr_lst); ifa->scope = scope; ifa->prefix_len = pfxlen; ifa->flags = flags | IFA_F_TENTATIVE; ifa->valid_lft = valid_lft; ifa->prefered_lft = prefered_lft; ifa->cstamp = ifa->tstamp = jiffies; ifa->tokenized = false; ifa->rt = rt; ifa->idev = idev; in6_dev_hold(idev); /* For caller */ in6_ifa_hold(ifa); /* Add to big hash table */ hash = inet6_addr_hash(addr); hlist_add_head_rcu(&ifa->addr_lst, &inet6_addr_lst[hash]); spin_unlock(&addrconf_hash_lock); write_lock(&idev->lock); /* Add to inet6_dev unicast addr list. */ ipv6_link_dev_addr(idev, ifa); if (ifa->flags&IFA_F_TEMPORARY) { list_add(&ifa->tmp_list, &idev->tempaddr_list); in6_ifa_hold(ifa); } in6_ifa_hold(ifa); write_unlock(&idev->lock); out2: rcu_read_unlock_bh(); if (likely(err == 0)) inet6addr_notifier_call_chain(NETDEV_UP, ifa); else { kfree(ifa); ifa = ERR_PTR(err); } return ifa; out: spin_unlock(&addrconf_hash_lock); goto out2; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明21843.51%924.32%
Linus Torvalds (pre-git)15029.94%410.81%
Stephen Hemminger265.19%410.81%
Jiri Pirko244.79%25.41%
Brian Haley224.39%25.41%
Jiri Benc183.59%12.70%
Shirley Ma102.00%12.70%
Daniel Borkmann61.20%12.70%
Keir Fraser61.20%12.70%
Linus Torvalds51.00%12.70%
Hannes Frederic Sowa40.80%25.41%
Benjamin Thery30.60%12.70%
Alexey Dobriyan20.40%12.70%
Daniel Lezcano10.20%12.70%
Ingo Oeser10.20%12.70%
Jamal Hadi Salim10.20%12.70%
Américo Wang10.20%12.70%
David S. Miller10.20%12.70%
Eric Dumazet10.20%12.70%
Ian Morris10.20%12.70%
Total501100.00%37100.00%

enum cleanup_prefix_rt_t { CLEANUP_PREFIX_RT_NOP, /* no cleanup action for prefix route */ CLEANUP_PREFIX_RT_DEL, /* delete the prefix route */ CLEANUP_PREFIX_RT_EXPIRE, /* update the lifetime of the prefix route */ }; /* * Check, whether the prefix for ifp would still need a prefix route * after deleting ifp. The function returns one of the CLEANUP_PREFIX_RT_* * constants. * * 1) we don't purge prefix if address was not permanent. * prefix is managed by its own lifetime. * 2) we also don't purge, if the address was IFA_F_NOPREFIXROUTE. * 3) if there are no addresses, delete prefix. * 4) if there are still other permanent address(es), * corresponding prefix is still permanent. * 5) if there are still other addresses with IFA_F_NOPREFIXROUTE, * don't purge the prefix, assume user space is managing it. * 6) otherwise, update prefix lifetime to the * longest valid lifetime among the corresponding * addresses on the device. * Note: subsequent RA will update lifetime. **/
static enum cleanup_prefix_rt_t check_cleanup_prefix_route(struct inet6_ifaddr *ifp, unsigned long *expires) { struct inet6_ifaddr *ifa; struct inet6_dev *idev = ifp->idev; unsigned long lifetime; enum cleanup_prefix_rt_t action = CLEANUP_PREFIX_RT_DEL; *expires = jiffies; list_for_each_entry(ifa, &idev->addr_list, if_list) { if (ifa == ifp) continue; if (!ipv6_prefix_equal(&ifa->addr, &ifp->addr, ifp->prefix_len)) continue; if (ifa->flags & (IFA_F_PERMANENT | IFA_F_NOPREFIXROUTE)) return CLEANUP_PREFIX_RT_NOP; action = CLEANUP_PREFIX_RT_EXPIRE; spin_lock(&ifa->lock); lifetime = addrconf_timeout_fixup(ifa->valid_lft, HZ); /* * Note: Because this address is * not permanent, lifetime < * LONG_MAX / HZ here. */ if (time_before(*expires, ifa->tstamp + lifetime * HZ)) *expires = ifa->tstamp + lifetime * HZ; spin_unlock(&ifa->lock); } return action; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Haller10565.22%114.29%
Linus Torvalds (pre-git)3924.22%342.86%
Herbert Xu116.83%114.29%
Hideaki Yoshifuji / 吉藤英明42.48%114.29%
Stephen Hemminger21.24%114.29%
Total161100.00%7100.00%


static void cleanup_prefix_route(struct inet6_ifaddr *ifp, unsigned long expires, bool del_rt) { struct rt6_info *rt; rt = addrconf_get_prefix_route(&ifp->addr, ifp->prefix_len, ifp->idev->dev, 0, RTF_GATEWAY | RTF_DEFAULT); if (rt) { if (del_rt) ip6_del_rt(rt); else { if (!(rt->rt6i_flags & RTF_EXPIRES)) rt6_set_expires(rt, expires); ip6_rt_put(rt); } } }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Haller5965.56%114.29%
Hideaki Yoshifuji / 吉藤英明2022.22%228.57%
Linus Torvalds (pre-git)77.78%228.57%
Stephen Hemminger44.44%228.57%
Total90100.00%7100.00%

/* This function wants to get referenced ifp and releases it before return */
static void ipv6_del_addr(struct inet6_ifaddr *ifp) { int state; enum cleanup_prefix_rt_t action = CLEANUP_PREFIX_RT_NOP; unsigned long expires; ASSERT_RTNL(); spin_lock_bh(&ifp->lock); state = ifp->state; ifp->state = INET6_IFADDR_STATE_DEAD; spin_unlock_bh(&ifp->lock); if (state == INET6_IFADDR_STATE_DEAD) goto out; spin_lock_bh(&addrconf_hash_lock); hlist_del_init_rcu(&ifp->addr_lst); spin_unlock_bh(&addrconf_hash_lock); write_lock_bh(&ifp->idev->lock); if (ifp->flags&IFA_F_TEMPORARY) { list_del(&ifp->tmp_list); if (ifp->ifpub) { in6_ifa_put(ifp->ifpub); ifp->ifpub = NULL; } __in6_ifa_put(ifp); } if (ifp->flags & IFA_F_PERMANENT && !(ifp->flags & IFA_F_NOPREFIXROUTE)) action = check_cleanup_prefix_route(ifp, &expires); list_del_init(&ifp->if_list); __in6_ifa_put(ifp); write_unlock_bh(&ifp->idev->lock); addrconf_del_dad_work(ifp); ipv6_ifa_notify(RTM_DELADDR, ifp); inet6addr_notifier_call_chain(NETDEV_DOWN, ifp); if (action != CLEANUP_PREFIX_RT_NOP) { cleanup_prefix_route(ifp, expires, action == CLEANUP_PREFIX_RT_DEL); } /* clean up prefsrc entries */ rt6_remove_prefsrc(ifp); out: in6_ifa_put(ifp); }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Haller13857.74%17.14%
Hideaki Yoshifuji / 吉藤英明5523.01%17.14%
Linus Torvalds (pre-git)177.11%321.43%
Hannes Frederic Sowa62.51%214.29%
Daniel Walter62.51%17.14%
Andrey Vagin41.67%17.14%
Linus Torvalds41.67%17.14%
Romain Kuntz41.67%17.14%
Herbert Xu20.84%17.14%
Gao Feng20.84%17.14%
Li RongQing10.42%17.14%
Total239100.00%14100.00%


static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp, struct inet6_ifaddr *ift) { struct inet6_dev *idev = ifp->idev; struct in6_addr addr, *tmpaddr; unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_tstamp, age; unsigned long regen_advance; int tmp_plen; int ret = 0; u32 addr_flags; unsigned long now = jiffies; long max_desync_factor; s32 cnf_temp_preferred_lft; write_lock_bh(&idev->lock); if (ift) { spin_lock_bh(&ift->lock); memcpy(&addr.s6_addr[8], &ift->addr.s6_addr[8], 8); spin_unlock_bh(&ift->lock); tmpaddr = &addr; } else { tmpaddr = NULL; } retry: in6_dev_hold(idev); if (idev->cnf.use_tempaddr <= 0) { write_unlock_bh(&idev->lock); pr_info("%s: use_tempaddr is disabled\n", __func__); in6_dev_put(idev); ret = -1; goto out; } spin_lock_bh(&ifp->lock); if (ifp->regen_count++ >= idev->cnf.regen_max_retry) { idev->cnf.use_tempaddr = -1; /*XXX*/ spin_unlock_bh(&ifp->lock); write_unlock_bh(&idev->lock); pr_warn("%s: regeneration time exceeded - disabled temporary address support\n", __func__); in6_dev_put(idev); ret = -1; goto out; } in6_ifa_hold(ifp); memcpy(addr.s6_addr, ifp->addr.s6_addr, 8); ipv6_try_regen_rndid(idev, tmpaddr); memcpy(&addr.s6_addr[8], idev->rndid, 8); age = (now - ifp->tstamp) / HZ; regen_advance = idev->cnf.regen_max_retry * idev->cnf.dad_transmits * NEIGH_VAR(idev->nd_parms, RETRANS_TIME) / HZ; /* recalculate max_desync_factor each time and update * idev->desync_factor if it's larger */ cnf_temp_preferred_lft = READ_ONCE(idev->cnf.temp_prefered_lft); max_desync_factor = min_t(__u32, idev->cnf.max_desync_factor, cnf_temp_preferred_lft - regen_advance); if (unlikely(idev->desync_factor > max_desync_factor)) { if (max_desync_factor > 0) { get_random_bytes(&idev->desync_factor, sizeof(idev->desync_factor)); idev->desync_factor %= max_desync_factor; } else { idev->desync_factor = 0; } } tmp_valid_lft = min_t(__u32, ifp->valid_lft, idev->cnf.temp_valid_lft + age); tmp_prefered_lft = cnf_temp_preferred_lft + age - idev->desync_factor; tmp_prefered_lft = min_t(__u32, ifp->prefered_lft, tmp_prefered_lft); tmp_plen = ifp->prefix_len; tmp_tstamp = ifp->tstamp; spin_unlock_bh(&ifp->lock); write_unlock_bh(&idev->lock); /* A temporary address is created only if this calculated Preferred * Lifetime is greater than REGEN_ADVANCE time units. In particular, * an implementation must not create a temporary address with a zero * Preferred Lifetime. * Use age calculation as in addrconf_verify to avoid unnecessary * temporary addresses being generated. */ age = (now - tmp_tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ; if (tmp_prefered_lft <= regen_advance + age) { in6_ifa_put(ifp); in6_dev_put(idev); ret = -1; goto out; } addr_flags = IFA_F_TEMPORARY; /* set in addrconf_prefix_rcv() */ if (ifp->flags & IFA_F_OPTIMISTIC) addr_flags |= IFA_F_OPTIMISTIC; ift = ipv6_add_addr(idev, &addr, NULL, tmp_plen, ipv6_addr_scope(&addr), addr_flags, tmp_valid_lft, tmp_prefered_lft); if (IS_ERR(ift)) { in6_ifa_put(ifp); in6_dev_put(idev); pr_info("%s: retry temporary address regeneration\n", __func__); tmpaddr = &addr; write_lock_bh(&idev->lock); goto retry; } spin_lock_bh(&ift->lock); ift->ifpub = ifp; ift->cstamp = now; ift->tstamp = tmp_tstamp; spin_unlock_bh(&ift->lock); addrconf_dad_start(ift); in6_ifa_put(ift); in6_dev_put(idev); out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明29144.02%313.64%
Jiri Bohac12819.36%313.64%
Linus Torvalds (pre-git)12318.61%418.18%
Benoit Boissinot304.54%14.55%
Neil Horman213.18%14.55%
Heiner Kallweit152.27%14.55%
Glenn Wurster152.27%14.55%
Joe Perches121.82%14.55%
Lorenzo Colitti81.21%14.55%
Jiri Pirko71.06%29.09%
Shirley Ma50.76%14.55%
Jiri Benc40.61%14.55%
Hannes Frederic Sowa10.15%14.55%
Américo Wang10.15%14.55%
Total661100.00%22100.00%

/* * Choose an appropriate source address (RFC3484) */ enum { IPV6_SADDR_RULE_INIT = 0, IPV6_SADDR_RULE_LOCAL, IPV6_SADDR_RULE_SCOPE, IPV6_SADDR_RULE_PREFERRED, #ifdef CONFIG_IPV6_MIP6 IPV6_SADDR_RULE_HOA, #endif IPV6_SADDR_RULE_OIF, IPV6_SADDR_RULE_LABEL, IPV6_SADDR_RULE_PRIVACY, IPV6_SADDR_RULE_ORCHID, IPV6_SADDR_RULE_PREFIX, #ifdef CONFIG_IPV6_OPTIMISTIC_DAD IPV6_SADDR_RULE_NOT_OPTIMISTIC, #endif IPV6_SADDR_RULE_MAX }; struct ipv6_saddr_score { int rule; int addr_type; struct inet6_ifaddr *ifa; DECLARE_BITMAP(scorebits, IPV6_SADDR_RULE_MAX); int scopedist; int matchlen; }; struct ipv6_saddr_dst { const struct in6_addr *addr; int ifindex; int scope; int label; unsigned int prefs; };
static inline int ipv6_saddr_preferred(int type) { if (type & (IPV6_ADDR_MAPPED|IPV6_ADDR_COMPATv4|IPV6_ADDR_LOOPBACK)) return 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2796.43%150.00%
Dave Jones13.57%150.00%
Total28100.00%2100.00%


static inline bool ipv6_use_optimistic_addr(struct inet6_dev *idev) { #ifdef CONFIG_IPV6_OPTIMISTIC_DAD return idev && idev->cnf.optimistic_dad && idev->cnf.use_optimistic; #else return false; #endif }

Contributors

PersonTokensPropCommitsCommitProp
Erik Kline37100.00%1100.00%
Total37100.00%1100.00%


static int ipv6_get_saddr_eval(struct net *net, struct ipv6_saddr_score *score, struct ipv6_saddr_dst *dst, int i) { int ret; if (i <= score->rule) { switch (i) { case IPV6_SADDR_RULE_SCOPE: ret = score->scopedist; break; case IPV6_SADDR_RULE_PREFIX: ret = score->matchlen; break; default: ret = !!test_bit(i, score->scorebits); } goto out; } switch (i) { case IPV6_SADDR_RULE_INIT: /* Rule 0: remember if hiscore is not ready yet */ ret = !!score->ifa; break; case IPV6_SADDR_RULE_LOCAL: /* Rule 1: Prefer same address */ ret = ipv6_addr_equal(&score->ifa->addr, dst->addr); break; case IPV6_SADDR_RULE_SCOPE: /* Rule 2: Prefer appropriate scope * * ret * ^ * -1 | d 15 * ---+--+-+---> scope * | * | d is scope of the destination. * B-d | \ * | \ <- smaller scope is better if * B-15 | \ if scope is enough for destination. * | ret = B - scope (-1 <= scope >= d <= 15). * d-C-1 | / * |/ <- greater is better * -C / if scope is not enough for destination. * /| ret = scope - C (-1 <= d < scope <= 15). * * d - C - 1 < B -15 (for all -1 <= d <= 15). * C > d + 14 - B >= 15 + 14 - B = 29 - B. * Assume B = 0 and we get C > 29. */ ret = __ipv6_addr_src_scope(score->addr_type); if (ret >= dst->scope) ret = -ret; else ret -= 128; /* 30 is enough */ score->scopedist = ret; break; case IPV6_SADDR_RULE_PREFERRED: { /* Rule 3: Avoid deprecated and optimistic addresses */ u8 avoid = IFA_F_DEPRECATED; if (!ipv6_use_optimistic_addr(score->ifa->idev)) avoid |= IFA_F_OPTIMISTIC; ret = ipv6_saddr_preferred(score->addr_type) || !(score->ifa->flags & avoid); break; } #ifdef CONFIG_IPV6_MIP6 case IPV6_SADDR_RULE_HOA: { /* Rule 4: Prefer home address */ int prefhome = !(dst->prefs & IPV6_PREFER_SRC_COA); ret = !(score->ifa->flags & IFA_F_HOMEADDRESS) ^ prefhome; break; } #endif case IPV6_SADDR_RULE_OIF: /* Rule 5: Prefer outgoing interface */ ret = (!dst->ifindex || dst->ifindex == score->ifa->idev->dev->ifindex); break; case IPV6_SADDR_RULE_LABEL: /* Rule 6: Prefer matching label */ ret = ipv6_addr_label(net, &score->ifa->addr, score->addr_type, score->ifa->idev->dev->ifindex) == dst->label; break; case IPV6_SADDR_RULE_PRIVACY: { /* Rule 7: Prefer public address * Note: prefer temporary address if use_tempaddr >= 2 */ int preftmp = dst->prefs & (IPV6_PREFER_SRC_PUBLIC|IPV6_PREFER_SRC_TMP) ? !!(dst->prefs & IPV6_PREFER_SRC_TMP) : score->ifa->idev->cnf.use_tempaddr >= 2; ret = (!(score->ifa->flags & IFA_F_TEMPORARY)) ^ preftmp; break; } case IPV6_SADDR_RULE_ORCHID: /* Rule 8-: Prefer ORCHID vs ORCHID or * non-ORCHID vs non-ORCHID */ ret = !(ipv6_addr_orchid(&score->ifa->addr) ^ ipv6_addr_orchid(dst->addr)); break; case IPV6_SADDR_RULE_PREFIX: /* Rule 8: Use longest matching prefix */ ret = ipv6_addr_diff(&score->ifa->addr, dst->addr); if (ret > score->ifa->prefix_len) ret = score->ifa->prefix_len; score->matchlen = ret; break; #ifdef CONFIG_IPV6_OPTIMISTIC_DAD case IPV6_SADDR_RULE_NOT_OPTIMISTIC: /* Optimistic addresses still have lower precedence than other * preferred addresses. */ ret = !(score->ifa->flags & IFA_F_OPTIMISTIC); break; #endif default: ret = 0; } if (ret) __set_bit(i, score->scorebits); score->rule = i; out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明41183.20%743.75%
Erik Kline479.51%16.25%
Linus Torvalds (pre-git)183.64%318.75%
Benjamin Thery71.42%16.25%
Neil Horman61.21%16.25%
Alexey Kuznetsov30.61%16.25%
Stephen Hemminger10.20%16.25%
Lucas De Marchi10.20%16.25%
Total494100.00%16100.00%


static int __ipv6_dev_get_saddr(struct net *net, struct ipv6_saddr_dst *dst, struct inet6_dev *idev, struct ipv6_saddr_score *scores, int hiscore_idx) { struct ipv6_saddr_score *score = &scores[1 - hiscore_idx], *hiscore = &scores[hiscore_idx]; read_lock_bh(&idev->lock); list_for_each_entry(score->ifa, &idev->addr_list, if_list) { int i; /* * - Tentative Address (RFC2462 section 5.4) * - A tentative address is not considered * "assigned to an interface" in the traditional * sense, unless it is also flagged as optimistic. * - Candidate Source Address (section 4) * - In any case, anycast addresses, multicast * addresses, and the unspecified address MUST * NOT be included in a candidate set. */ if ((score->ifa->flags & IFA_F_TENTATIVE) && (!(score->ifa->flags & IFA_F_OPTIMISTIC))) continue; score->addr_type = __ipv6_addr_type(&score->ifa->addr); if (unlikely(score->addr_type == IPV6_ADDR_ANY || score->addr_type & IPV6_ADDR_MULTICAST)) { net_dbg_ratelimited("ADDRCONF: unspecified / multicast address assigned as unicast address on %s", idev->dev->name); continue; } score->rule = -1; bitmap_zero(score->scorebits, IPV6_SADDR_RULE_MAX); for (i = 0; i < IPV6_SADDR_RULE_MAX; i++) { int minihiscore, miniscore; minihiscore = ipv6_get_saddr_eval(net, hiscore, dst, i); miniscore = ipv6_get_saddr_eval(net, score, dst, i); if (minihiscore > miniscore) { if (i == IPV6_SADDR_RULE_SCOPE && score->scopedist > 0) { /* * special case: * each remaining entry * has too small (not enough) * scope, because ifa entries * are sorted by their scope * values. */ goto out; } break; } else if (minihiscore < miniscore) { if (hiscore->ifa) in6_ifa_put(hiscore->ifa); in6_ifa_hold(score->ifa); swap(hiscore, score); hiscore_idx = 1 - hiscore_idx; /* restore our iterator */ score->ifa = hiscore->ifa; break; } } } out: read_unlock_bh(&idev->lock); return hiscore_idx; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明20970.13%420.00%
Hideaki Yoshifuji/吉藤英明3612.08%210.00%
Linus Torvalds (pre-git)186.04%315.00%
Stephen Hemminger82.68%15.00%
Brian Haley51.68%15.00%
Benjamin Thery41.34%15.00%
Ilpo Järvinen41.34%15.00%
Juha-Matti Tapio31.01%15.00%
Noriaki Takamiya31.01%15.00%
Linus Torvalds31.01%15.00%
Joe Perches20.67%15.00%
Alexey Kuznetsov10.34%15.00%
Yan Zheng10.34%15.00%
Masahide Nakamura10.34%15.00%
Total298100.00%20100.00%


static int ipv6_get_saddr_master(struct net *net, const struct net_device *dst_dev, const struct net_device *master, struct ipv6_saddr_dst *dst, struct ipv6_saddr_score *scores, int hiscore_idx) { struct inet6_dev *idev; idev = __in6_dev_get(dst_dev); if (idev) hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev, scores, hiscore_idx); idev = __in6_dev_get(master); if (idev) hiscore_idx = __ipv6_dev_get_saddr(net, dst, idev, scores, hiscore_idx); return hiscore_idx; }

Contributors

PersonTokensPropCommitsCommitProp
David Ahern96100.00%1100.00%
Total96100.00%1100.00%


int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev, const struct in6_addr *daddr, unsigned int prefs, struct in6_addr *saddr) { struct ipv6_saddr_score scores[2], *hiscore; struct ipv6_saddr_dst dst; struct inet6_dev *idev; struct net_device *dev; int dst_type; bool use_oif_addr = false; int hiscore_idx = 0; dst_type = __ipv6_addr_type(daddr); dst.addr = daddr; dst.ifindex = dst_dev ? dst_dev->ifindex : 0; dst.scope = __ipv6_addr_src_scope(dst_type); dst.label = ipv6_addr_label(net, daddr, dst_type, dst.ifindex); dst.prefs = prefs; scores[hiscore_idx].rule = -1; scores[hiscore_idx].ifa = NULL; rcu_read_lock(); /* Candidate Source Address (section 4) * - multicast and link-local destination address, * the set of candidate source address MUST only * include addresses assigned to interfaces * belonging to the same link as the outgoing * interface. * (- For site-local destination addresses, the * set of candidate source addresses MUST only * include addresses assigned to interfaces * belonging to the same site as the outgoing * interface.) * - "It is RECOMMENDED that the candidate source addresses * be the set of unicast addresses assigned to the * interface that will be used to send to the destination * (the 'outgoing' interface)." (RFC 6724) */ if (dst_dev) { idev = __in6_dev_get(dst_dev); if ((dst_type & IPV6_ADDR_MULTICAST) || dst.scope <= IPV6_ADDR_SCOPE_LINKLOCAL || (idev && idev->cnf.use_oif_addrs_only)) { use_oif_addr = true; } } if (use_oif_addr) { if (idev) hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx); } else { const struct net_device *master; int master_idx = 0; /* if dst_dev exists and is enslaved to an L3 device, then * prefer addresses from dst_dev and then the master over * any other enslaved devices in the L3 domain. */ master = l3mdev_master_dev_rcu(dst_dev); if (master) { master_idx = master->ifindex; hiscore_idx = ipv6_get_saddr_master(net, dst_dev, master, &dst, scores, hiscore_idx); if (scores[hiscore_idx].ifa) goto out; } for_each_netdev_rcu(net, dev) { /* only consider addresses on devices in the * same L3 domain */ if (l3mdev_master_ifindex_rcu(dev) != master_idx) continue; idev = __in6_dev_get(dev); if (!idev) continue; hiscore_idx = __ipv6_dev_get_saddr(net, &dst, idev, scores, hiscore_idx); } } out: rcu_read_unlock(); hiscore = &scores[hiscore_idx]; if (!hiscore->ifa) return -EADDRNOTAVAIL; *saddr = hiscore->ifa->addr; in6_ifa_put(hiscore->ifa); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji/吉藤英明24666.13%220.00%
David Ahern7419.89%110.00%
Erik Kline184.84%110.00%
Hideaki Yoshifuji / 吉藤英明174.57%330.00%
David L Stevens143.76%110.00%
Alexey Dobriyan20.54%110.00%
Linus Torvalds (pre-git)10.27%110.00%
Total372100.00%10100.00%

EXPORT_SYMBOL(ipv6_dev_get_saddr);
int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr, u32 banned_flags) { struct inet6_ifaddr *ifp; int err = -EADDRNOTAVAIL; list_for_each_entry_reverse(ifp, &idev->addr_list, if_list) { if (ifp->scope > IFA_LINK) break; if (ifp->scope == IFA_LINK && !(ifp->flags & banned_flags)) { *addr = ifp->addr; err = 0; break; } } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3643.90%112.50%
Hannes Frederic Sowa1923.17%225.00%
Linus Torvalds (pre-git)1417.07%112.50%
Stephen Hemminger78.54%112.50%
Neil Horman33.66%112.50%
Alexey Dobriyan22.44%112.50%
Jiri Pirko11.22%112.50%
Total82100.00%8100.00%


int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr, u32 banned_flags) { struct inet6_dev *idev; int err = -EADDRNOTAVAIL; rcu_read_lock(); idev = __in6_dev_get(dev); if (idev) { read_lock_bh(&idev->lock); err = __ipv6_get_lladdr(idev, addr, banned_flags); read_unlock_bh(&idev->lock); } rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa6178.21%116.67%
Hideaki Yoshifuji / 吉藤英明1215.38%233.33%
Linus Torvalds (pre-git)45.13%233.33%
Jiri Pirko11.28%116.67%
Total78100.00%6100.00%


static int ipv6_count_addresses(struct inet6_dev *idev) { int cnt = 0; struct inet6_ifaddr *ifp; read_lock_bh(&idev->lock); list_for_each_entry(ifp, &idev->addr_list, if_list) cnt++; read_unlock_bh(&idev->lock); return cnt; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3976.47%133.33%
Stephen Hemminger815.69%133.33%
Linus Torvalds (pre-git)47.84%133.33%
Total51100.00%3100.00%


int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, const struct net_device *dev, int strict) { return ipv6_chk_addr_and_flags(net, addr, dev, strict, IFA_F_TENTATIVE); }

Contributors

PersonTokensPropCommitsCommitProp
Erik Kline1538.46%112.50%
Linus Torvalds (pre-git)717.95%225.00%
Hideaki Yoshifuji / 吉藤英明717.95%112.50%
Daniel Lezcano512.82%112.50%
Ville Nuorvala37.69%112.50%
Eric Dumazet12.56%112.50%
Florian Westphal12.56%112.50%
Total39100.00%8100.00%

EXPORT_SYMBOL(ipv6_chk_addr);
int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr, const struct net_device *dev, int strict, u32 banned_flags) { struct inet6_ifaddr *ifp; unsigned int hash = inet6_addr_hash(addr); u32 ifp_flags; rcu_read_lock_bh(); hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) { if (!net_eq(dev_net(ifp->idev->dev), net)) continue; /* Decouple optimistic from tentative for evaluation here. * Ban optimistic addresses explicitly, when required. */ ifp_flags = (ifp->flags&IFA_F_OPTIMISTIC) ? (ifp->flags&~IFA_F_TENTATIVE) : ifp->flags; if (ipv6_addr_equal(&ifp->addr, addr) && !(ifp_flags&banned_flags) && (!dev || ifp->idev->dev == dev || !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))) { rcu_read_unlock_bh(); return 1; } } rcu_read_unlock_bh(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Erik Kline5634.78%16.25%
Hideaki Yoshifuji / 吉藤英明5634.78%425.00%
Stephen Hemminger2616.15%425.00%
Daniel Lezcano106.21%16.25%
Linus Torvalds (pre-git)95.59%318.75%
Ville Nuorvala21.24%16.25%
Eric Dumazet10.62%16.25%
Ian Morris10.62%16.25%
Total161100.00%16100.00%

EXPORT_SYMBOL(ipv6_chk_addr_and_flags);
static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, struct net_device *dev) { unsigned int hash = inet6_addr_hash(addr); struct inet6_ifaddr *ifp; hlist_for_each_entry(ifp, &inet6_addr_lst[hash], addr_lst) { if (!net_eq(dev_net(ifp->idev->dev), net)) continue; if (ipv6_addr_equal(&ifp->addr, addr)) { if (!dev || ifp->idev->dev == dev) return true; } } return false; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5859.79%444.44%
Daniel Lezcano1515.46%111.11%
David S. Miller1414.43%111.11%
Stephen Hemminger88.25%111.11%
Ian Morris11.03%111.11%
Eric Dumazet11.03%111.11%
Total97100.00%9100.00%

/* Compares an address/prefix_len with addresses on device @dev. * If one is found it returns true. */
bool ipv6_chk_custom_prefix(const struct in6_addr *addr, const unsigned int prefix_len, struct net_device *dev) { struct inet6_dev *idev; struct inet6_ifaddr *ifa; bool ret = false; rcu_read_lock(); idev = __in6_dev_get(dev); if (idev) { read_lock_bh(&idev->lock); list_for_each_entry(ifa, &idev->addr_list, if_list) { ret = ipv6_prefix_equal(addr, &ifa->addr, prefix_len); if (ret) break; } read_unlock_bh(&idev->lock); } rcu_read_unlock(); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Catalin(ux aka Dino) M. Boie103100.00%1100.00%
Total103100.00%1100.00%

EXPORT_SYMBOL(ipv6_chk_custom_prefix);
int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev) { struct inet6_dev *idev; struct inet6_ifaddr *ifa; int onlink; onlink = 0; rcu_read_lock(); idev = __in6_dev_get(dev); if (idev) { read_lock_bh(&idev->lock); list_for_each_entry(ifa, &idev->addr_list, if_list) { onlink = ipv6_prefix_equal(addr, &ifa->addr, ifa->prefix_len); if (onlink) break; } read_unlock_bh(&idev->lock); } rcu_read_unlock(); return onlink; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明9391.18%133.33%
Stephen Hemminger87.84%133.33%
Eric Dumazet10.98%133.33%
Total102100.00%3100.00%

EXPORT_SYMBOL(ipv6_chk_prefix);
struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *addr, struct net_device *dev, int strict) { struct inet6_ifaddr *ifp, *result = NULL; unsigned int hash = inet6_addr_hash(addr); rcu_read_lock_bh(); hlist_for_each_entry_rcu_bh(ifp, &inet6_addr_lst[hash], addr_lst) { if (!net_eq(dev_net(ifp->idev->dev), net)) continue; if (ipv6_addr_equal(&ifp->addr, addr)) { if (!dev || ifp->idev->dev == dev || !(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) { result = ifp; in6_ifa_hold(ifp); break; } } } rcu_read_unlock_bh(); return result; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明8965.44%535.71%
Stephen Hemminger1611.76%321.43%
Daniel Lezcano1511.03%17.14%
David S. Miller85.88%17.14%
Ville Nuorvala53.68%17.14%
Eric Dumazet21.47%214.29%
Ian Morris10.74%17.14%
Total136100.00%14100.00%

/* Gets referenced address, destroys ifaddr */
static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed) { if (dad_failed) ifp->flags |= IFA_F_DADFAILED; if (ifp->flags&IFA_F_PERMANENT) { spin_lock_bh(&ifp->lock); addrconf_del_dad_work(ifp); ifp->flags |= IFA_F_TENTATIVE; spin_unlock_bh(&ifp->lock); if (dad_failed) ipv6_ifa_notify(0, ifp); in6_ifa_put(ifp); } else if (ifp->flags&IFA_F_TEMPORARY) { struct inet6_ifaddr *ifpub; spin_lock_bh(&ifp->lock); ifpub = ifp->ifpub; if (ifpub) { in6_ifa_hold(ifpub); spin_unlock_bh(&ifp->lock); ipv6_create_tempaddr(ifpub, ifp); in6_ifa_put(ifpub); } else { spin_unlock_bh(&ifp->lock); } ipv6_del_addr(ifp); } else { ipv6_del_addr(ifp); } }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明13482.72%228.57%
Herbert Xu116.79%114.29%
Lubomir Rintel106.17%114.29%
Hannes Frederic Sowa31.85%114.29%
Brian Haley31.85%114.29%
Adrian Bunk10.62%114.29%
Total162100.00%7100.00%


static int addrconf_dad_end(struct inet6_ifaddr *ifp) { int err = -ENOENT; spin_lock_bh(&ifp->lock); if (ifp->state == INET6_IFADDR_STATE_DAD) { ifp->state = INET6_IFADDR_STATE_POSTDAD; err = 0; } spin_unlock_bh(&ifp->lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu5292.86%133.33%
Hannes Frederic Sowa47.14%266.67%
Total56100.00%3100.00%


void addrconf_dad_failure(struct inet6_ifaddr *ifp) { struct inet6_dev *idev = ifp->idev; struct net *net = dev_net(ifp->idev->dev); if (addrconf_dad_end(ifp)) { in6_ifa_put(ifp); return; } net_info_ratelimited("%s: IPv6 duplicate address %pI6c detected!\n", ifp->idev->dev->name, &ifp->addr); spin_lock_bh(&ifp->lock); if (ifp->flags & IFA_F_STABLE_PRIVACY) { int scope = ifp->scope; u32 flags = ifp->flags; struct in6_addr new_addr; struct inet6_ifaddr *ifp2; u32 valid_lft, preferred_lft; int pfxlen = ifp->prefix_len; int retries = ifp->stable_privacy_retry + 1; if (retries > net->ipv6.sysctl.idgen_retries) { net_info_ratelimited("%s: privacy stable address generation failed because of DAD conflicts!\n", ifp->idev->dev->name); goto errdad; } new_addr = ifp->addr; if (ipv6_generate_stable_address(&new_addr, retries, idev)) goto errdad; valid_lft = ifp->valid_lft; preferred_lft = ifp->prefered_lft; spin_unlock_bh(&ifp->lock); if (idev->cnf.max_addresses && ipv6_count_addresses(idev) >= idev->cnf.max_addresses) goto lock_errdad; net_info_ratelimited("%s: generating new stable privacy address because of DAD conflict\n", ifp->idev->dev->name); ifp2 = ipv6_add_addr(idev, &new_addr, NULL, pfxlen, scope, flags, valid_lft, preferred_lft); if (IS_ERR(ifp2)) goto lock_errdad; spin_lock_bh(&ifp2->lock); ifp2->stable_privacy_retry = retries; ifp2->state = INET6_IFADDR_STATE_PREDAD; spin_unlock_bh(&ifp2->lock); addrconf_mod_dad_work(ifp2, net->ipv6.sysctl.idgen_delay); in6_ifa_put(ifp2); lock_errdad: spin_lock_bh(&ifp->lock); } errdad: /* transition from _POSTDAD to _ERRDAD */ ifp->state = INET6_IFADDR_STATE_ERRDAD; spin_unlock_bh(&ifp->lock); addrconf_mod_dad_work(ifp, 0); in6_ifa_put(ifp); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa28982.34%430.77%
Hideaki Yoshifuji / 吉藤英明257.12%215.38%
Brian Haley123.42%215.38%
Ursula Braun71.99%17.69%
Jens Rosenboom61.71%17.69%
Herbert Xu61.71%17.69%
Wei Yongjun51.42%17.69%
Joe Perches10.28%17.69%
Total351100.00%13100.00%

/* Join to solicited addr multicast group. * caller must hold RTNL */
void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr) { struct in6_addr maddr; if (dev->flags&(IFF_LOOPBACK|IFF_NOARP)) return; addrconf_addr_solict_mult(addr, &maddr); ipv6_dev_mc_inc(dev, &maddr); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4897.96%150.00%
Eric Dumazet12.04%150.00%
Total49100.00%2100.00%

/* caller must hold RTNL */
void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr) { struct in6_addr maddr; if (idev->dev->flags&(IFF_LOOPBACK|IFF_NOARP)) return; addrconf_addr_solict_mult(addr, &maddr); __ipv6_dev_mc_dec(idev, &maddr); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5098.04%266.67%
Eric Dumazet11.96%133.33%
Total51100.00%3100.00%

/* caller must hold RTNL */
static void addrconf_join_anycast(struct inet6_ifaddr *ifp) { struct in6_addr addr; if (ifp->prefix_len >= 127) /* RFC 6164 */ return; ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len); if (ipv6_addr_any(&addr)) return; __ipv6_dev_ac_inc(ifp->idev, &addr); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4779.66%120.00%
Björn Mork915.25%120.00%
Arnaldo Carvalho de Melo11.69%120.00%
Hannes Frederic Sowa11.69%120.00%
Américo Wang11.69%120.00%
Total59100.00%5100.00%

/* caller must hold RTNL */
static void addrconf_leave_anycast(struct inet6_ifaddr *ifp) { struct in6_addr addr; if (ifp->prefix_len >= 127) /* RFC 6164 */ return; ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len); if (ipv6_addr_any(&addr)) return; __ipv6_dev_ac_dec(ifp->idev, &addr); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5796.61%250.00%
Hannes Frederic Sowa11.69%125.00%
Arnaldo Carvalho de Melo11.69%125.00%
Total59100.00%4100.00%


static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev) { if (dev->addr_len != EUI64_ADDR_LEN) return -1; memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN); eui[0] ^= 2; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Smirnov3981.25%133.33%
Hideaki Yoshifuji / 吉藤英明714.58%133.33%
Alexander Aring24.17%133.33%
Total48100.00%3100.00%


static int addrconf_ifid_ieee1394(u8 *eui, struct net_device *dev) { union fwnet_hwaddr *ha; if (dev->addr_len != FWNET_ALEN) return -1; ha = (union fwnet_hwaddr *)dev->dev_addr; memcpy(eui, &ha->uc.uniq_id, sizeof(ha->uc.uniq_id)); eui[0] ^= 2; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明74100.00%1100.00%
Total74100.00%1100.00%


static int addrconf_ifid_arcnet(u8 *eui, struct net_device *dev) { /* XXX: inherit EUI-64 from other interface -- yoshfuji */ if (dev->addr_len != ARCNET_ALEN) return -1; memset(eui, 0, 7); eui[7] = *(u8 *)dev->dev_addr; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明54100.00%3100.00%
Total54100.00%3100.00%


static int addrconf_ifid_infiniband(u8 *eui, struct net_device *dev) { if (dev->addr_len != INFINIBAND_ALEN) return -1; memcpy(eui, dev->dev_addr + 12, 8); eui[0] |= 2; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Roland Dreier3570.00%133.33%
Hideaki Yoshifuji / 吉藤英明1530.00%266.67%
Total50100.00%3100.00%


static int __ipv6_isatap_ifid(u8 *eui, __be32 addr) { if (addr == 0) return -1; eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) || ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) || ipv4_is_private_172(addr) || ipv4_is_test_192(addr) || ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) || ipv4_is_test_198(addr) || ipv4_is_multicast(addr) || ipv4_is_lbcast(addr)) ? 0x00 : 0x02; eui[1] = 0; eui[2] = 0x5E; eui[3] = 0xFE; memcpy(eui + 4, &addr, 4); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明11491.20%133.33%
Sascha Hlusiak108.00%133.33%
Stephen Hemminger10.80%133.33%
Total125100.00%3100.00%


static int addrconf_ifid_sit(u8 *eui, struct net_device *dev) { if (dev->priv_flags & IFF_ISATAP) return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr); return -1; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明42100.00%1100.00%
Total42100.00%1100.00%


static int addrconf_ifid_gre(u8 *eui, struct net_device *dev) { return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger30100.00%1100.00%
Total30100.00%1100.00%


static int addrconf_ifid_ip6tnl(u8 *eui, struct net_device *dev) { memcpy(eui, dev->perm_addr, 3); memcpy(eui + 5, dev->perm_addr + 3, 3); eui[3] = 0xFF; eui[4] = 0xFE; eui[0] ^= 2; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel65100.00%1100.00%
Total65100.00%1100.00%


static int ipv6_generate_eui64(u8 *eui, struct net_device *dev) { switch (dev->type) { case ARPHRD_ETHER: case ARPHRD_FDDI: return addrconf_ifid_eui48(eui, dev); case ARPHRD_ARCNET: return addrconf_ifid_arcnet(eui, dev); case ARPHRD_INFINIBAND: return addrconf_ifid_infiniband(eui, dev); case ARPHRD_SIT: return addrconf_ifid_sit(eui, dev); case ARPHRD_IPGRE: case ARPHRD_TUNNEL: return addrconf_ifid_gre(eui, dev); case ARPHRD_6LOWPAN: return addrconf_ifid_eui64(eui, dev); case ARPHRD_IEEE1394: return addrconf_ifid_ieee1394(eui, dev); case ARPHRD_TUNNEL6: case ARPHRD_IP6GRE: return addrconf_ifid_ip6tnl(eui, dev); } return -1; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明7560.48%440.00%
Stephen Hemminger118.87%110.00%
Nicolas Dichtel118.87%110.00%
Fred L. Templin108.06%110.00%
Alexander Smirnov97.26%110.00%
Felix Jia64.84%110.00%
Jukka Rissanen21.61%110.00%
Total124100.00%10100.00%


static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev) { int err = -1; struct inet6_ifaddr *ifp; read_lock_bh(&idev->lock); list_for_each_entry_reverse(ifp, &idev->addr_list, if_list) { if (ifp->scope > IFA_LINK) break; if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) { memcpy(eui, ifp->addr.s6_addr+8, 8); err = 0; break; } } read_unlock_bh(&idev->lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明8582.52%125.00%
Hannes Frederic Sowa109.71%125.00%
Stephen Hemminger76.80%125.00%
Linus Torvalds (pre-git)10.97%125.00%
Total103100.00%4100.00%

/* (re)generation of randomized interface identifier (RFC 3041 3.2, 3.5) */
static void ipv6_regen_rndid(struct inet6_dev *idev) { regen: get_random_bytes(idev->rndid, sizeof(idev->rndid)); idev->rndid[0] &= ~0x02; /* * <draft-ietf-ipngwg-temp-addresses-v2-00.txt>: * check if generated address is not inappropriate * * - Reserved subnet anycast (RFC 2526) * 11111101 11....11 1xxxxxxx * - ISATAP (RFC4214) 6.1 * 00-00-5E-FE-xx-xx-xx-xx * - value 0 * - XXX: already assigned to an address on the device */ if (idev->rndid[0] == 0xfd && (idev->rndid[1]&idev->rndid[2]&idev->rndid[3]&idev->rndid[4]&idev->rndid[5]&idev->rndid[6]) == 0xff && (idev->rndid[7]&0x80)) goto regen; if ((idev->rndid[0]|idev->rndid[1]) == 0) { if (idev->rndid[2] == 0x5e && idev->rndid[3] == 0xfe) goto regen; if ((idev->rndid[2]|idev->rndid[3]|idev->rndid[4]|idev->rndid[5]|idev->rndid[6]|idev->rndid[7]) == 0x00) goto regen; } }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明18992.20%330.00%
Linus Torvalds (pre-git)83.90%220.00%
David S. Miller41.95%110.00%
Sorin Dumitru10.49%110.00%
Fred L. Templin10.49%110.00%
Herbert Xu10.49%110.00%
Jiri Bohac10.49%110.00%
Total205100.00%10100.00%


static void ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr) { if (tmpaddr && memcmp(idev->rndid, &tmpaddr->s6_addr[8], 8) == 0) ipv6_regen_rndid(idev); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2250.00%125.00%
Linus Torvalds (pre-git)1840.91%125.00%
Herbert Xu24.55%125.00%
Jiri Bohac24.55%125.00%
Total44100.00%4100.00%

/* * Add prefix route. */
static void addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev, unsigned long expires, u32 flags) { struct fib6_config cfg = { .fc_table = l3mdev_fib_table(dev) ? : RT6_TABLE_PREFIX, .fc_metric = IP6_RT_PRIO_ADDRCONF, .fc_ifindex = dev->ifindex, .fc_expires = expires, .fc_dst_len = plen, .fc_flags = RTF_UP | flags, .fc_nlinfo.nl_net = dev_net(dev), .fc_protocol = RTPROT_KERNEL, }; cfg.fc_dst = *pfx; /* Prevent useless cloning on PtP SIT. This thing is done here expecting that the whole class of non-broadcast devices need not cloning. */ #if IS_ENABLED(CONFIG_IPV6_SIT) if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT)) cfg.fc_flags |= RTF_NONEXTHOP; #endif ip6_route_add(&cfg); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7254.96%741.18%
Thomas Graf2720.61%15.88%
Benjamin Thery75.34%211.76%
Joerg Roedel75.34%15.88%
David Ahern64.58%15.88%
Stephen Hemminger53.82%15.88%
Hideaki Yoshifuji / 吉藤英明32.29%15.88%
Alexey Dobriyan21.53%15.88%
Jamal Hadi Salim10.76%15.88%
Américo Wang10.76%15.88%
Total131100.00%17100.00%


static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx, int plen, const struct net_device *dev, u32 flags, u32 noflags) { struct fib6_node *fn; struct rt6_info *rt = NULL; struct fib6_table *table; u32 tb_id = l3mdev_fib_table(dev) ? : RT6_TABLE_PREFIX; table = fib6_get_table(dev_net(dev), tb_id); if (!table) return NULL; read_lock_bh(&table->tb6_lock); fn = fib6_locate(&table->tb6_root, pfx, plen, NULL, 0); if (!fn) goto out; noflags |= RTF_CACHE; for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) { if (rt->dst.dev->ifindex != dev->ifindex) continue; if ((rt->rt6i_flags & flags) != flags) continue; if ((rt->rt6i_flags & noflags) != 0) continue; dst_hold(&rt->dst); break; } out: read_unlock_bh(&table->tb6_lock); return rt; }

Contributors

PersonTokensPropCommitsCommitProp
Andreas Hofmeister17588.38%114.29%
David Ahern126.06%114.29%
Martin KaFai Lau42.02%114.29%
David S. Miller31.52%114.29%
Li RongQing21.01%114.29%
Ian Morris10.51%114.29%
Romain Kuntz10.51%114.29%
Total198100.00%7100.00%

/* Create "default" multicast route to the interface */
static void addrconf_add_mroute(struct net_device *dev) { struct fib6_config cfg = { .fc_table = l3mdev_fib_table(dev) ? : RT6_TABLE_LOCAL, .fc_metric = IP6_RT_PRIO_ADDRCONF, .fc_ifindex = dev->ifindex, .fc_dst_len = 8, .fc_flags = RTF_UP, .fc_nlinfo.nl_net = dev_net(dev), }; ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0); ip6_route_add(&cfg); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3440.00%333.33%
Thomas Graf3440.00%111.11%
Benjamin Thery78.24%222.22%
David Ahern67.06%111.11%
Hideaki Yoshifuji / 吉藤英明44.71%222.22%
Total85100.00%9100.00%


static struct inet6_dev *addrconf_add_dev(struct net_device *dev) { struct inet6_dev *idev; ASSERT_RTNL(); idev = ipv6_find_idev(dev); if (!idev) return ERR_PTR(-ENOBUFS); if (idev->cnf.disable_ipv6) return ERR_PTR(-EACCES); /* Add default multicast route */ if (!(dev->flags & IFF_LOOPBACK) && !netif_is_l3_master(dev)) addrconf_add_mroute(dev); return idev; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3948.15%660.00%
Brian Haley2024.69%110.00%
Li Wei1113.58%110.00%
David Ahern67.41%110.00%
Stephen Hemminger56.17%110.00%
Total81100.00%10100.00%


static void manage_tempaddrs(struct inet6_dev *idev, struct inet6_ifaddr *ifp, __u32 valid_lft, __u32 prefered_lft, bool create, unsigned long now) { u32 flags; struct inet6_ifaddr *ift; read_lock_bh(&idev->lock); /* update all temporary addresses in the list */ list_for_each_entry(ift, &idev->tempaddr_list, tmp_list) { int age, max_valid, max_prefered; if (ifp != ift->ifpub) continue; /* RFC 4941 section 3.3: * If a received option will extend the lifetime of a public * address, the lifetimes of temporary addresses should * be extended, subject to the overall constraint that no * temporary addresses should ever remain "valid" or "preferred" * for a time longer than (TEMP_VALID_LIFETIME) or * (TEMP_PREFERRED_LIFETIME - DESYNC_FACTOR), respectively. */ age = (now - ift->cstamp) / HZ; max_valid = idev->cnf.temp_valid_lft - age; if (max_valid < 0) max_valid = 0; max_prefered = idev->cnf.temp_prefered_lft - idev->desync_factor - age; if (max_prefered < 0) max_prefered = 0; if (valid_lft > max_valid) valid_lft = max_valid; if (prefered_lft > max_prefered) prefered_lft = max_prefered; spin_lock(&ift->lock); flags = ift->flags; ift->valid_lft = valid_lft; ift->prefered_lft = prefered_lft; ift->tstamp = now; if (prefered_lft > 0) ift->flags &= ~IFA_F_DEPRECATED; spin_unlock(&ift->lock); if (!(flags&IFA_F_TENTATIVE)) ipv6_ifa_notify(0, ift); } if ((create || list_empty(&idev->tempaddr_list)) && idev->cnf.use_tempaddr > 0) { /* When a new public address is created as described * in [ADDRCONF], also create a new temporary address. * Also create a temporary address if it's enabled but * no temporary address currently exists. */ read_unlock_bh(&idev->lock); ipv6_create_tempaddr(ifp, NULL); } else { read_unlock_bh(&idev->lock); } }

Contributors

PersonTokensPropCommitsCommitProp
Jiri Pirko26899.63%150.00%
Jiri Bohac10.37%150.00%
Total269100.00%2100.00%


static bool is_addr_mode_generate_stable(struct inet6_dev *idev) { return idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_STABLE_PRIVACY || idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_RANDOM; }

Contributors

PersonTokensPropCommitsCommitProp
Björn Mork2485.71%150.00%
Felix Jia414.29%150.00%
Total28100.00%2100.00%


int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev, const struct prefix_info *pinfo, struct inet6_dev *in6_dev, const struct in6_addr *addr, int addr_type, u32 addr_flags, bool sllao, bool tokenized, __u32 valid_lft, u32 prefered_lft) { struct inet6_ifaddr *ifp = ipv6_get_ifaddr(net, addr, dev, 1); int create = 0, update_lft = 0; if (!ifp && valid_lft) { int max_addresses = in6_dev->cnf.max_addresses; #ifdef CONFIG_IPV6_OPTIMISTIC_DAD if (in6_dev->cnf.optimistic_dad && !net->ipv6.devconf_all->forwarding && sllao) addr_flags |= IFA_F_OPTIMISTIC; #endif /* Do not allow to create too much of autoconfigured * addresses; this would be too easy way to crash kernel. */ if (!max_addresses || ipv6_count_addresses(in6_dev) < max_addresses) ifp = ipv6_add_addr(in6_dev, addr, NULL, pinfo->prefix_len, addr_type&IPV6_ADDR_SCOPE_MASK, addr_flags, valid_lft, prefered_lft); if (IS_ERR_OR_NULL(ifp)) return -1; update_lft = 0; create = 1; spin_lock_bh(&ifp->lock); ifp->flags |= IFA_F_MANAGETEMPADDR; ifp->cstamp = jiffies; ifp->tokenized = tokenized; spin_unlock_bh(&ifp->lock); addrconf_dad_start(ifp); } if (ifp) { u32 flags; unsigned long now; u32 stored_lft; /* update lifetime (RFC2462 5.5.3 e) */ spin_lock_bh(&ifp->lock); now = jiffies; if (ifp->valid_lft > (now - ifp->tstamp) / HZ) stored_lft = ifp->valid_lft - (now - ifp->tstamp) / HZ; else stored_lft = 0; if (!update_lft && !create && stored_lft) { const u32 minimum_lft = min_t(u32, stored_lft, MIN_VALID_LIFETIME); valid_lft = max(valid_lft, minimum_lft); /* RFC4862 Section 5.5.3e: * "Note that the preferred lifetime of the * corresponding address is always reset to * the Preferred Lifetime in the received * Prefix Information option, regardless of * whether the valid lifetime is also reset or * ignored." * * So we should always update prefered_lft here. */ update_lft = 1; } if (update_lft) { ifp->valid_lft = valid_lft; ifp->prefered_lft = prefered_lft; ifp->tstamp = now; flags = ifp->flags; ifp->flags &= ~IFA_F_DEPRECATED; spin_unlock_bh(&ifp->lock); if (!(flags&IFA_F_TENTATIVE)) ipv6_ifa_notify(0, ifp); } else spin_unlock_bh(&ifp->lock); manage_tempaddrs(in6_dev, ifp, valid_lft, prefered_lft, create, now); in6_ifa_put(ifp); addrconf_verify(); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Aring30372.49%15.00%
Linus Torvalds (pre-git)8319.86%1050.00%
Hideaki Yoshifuji / 吉藤英明225.26%420.00%
Neil Horman30.72%15.00%
Hannes Frederic Sowa30.72%15.00%
Gao Feng20.48%15.00%
Andreas Hofmeister10.24%15.00%
Brian Haley10.24%15.00%
Total418100.00%20100.00%

EXPORT_SYMBOL_GPL(addrconf_prefix_rcv_add_addr);
void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao) { struct prefix_info *pinfo; __u32 valid_lft; __u32 prefered_lft; int addr_type, err; u32 addr_flags = 0; struct inet6_dev *in6_dev; struct net *net = dev_net(dev); pinfo = (struct prefix_info *) opt; if (len < sizeof(struct prefix_info)) { ADBG("addrconf: prefix option too short\n"); return; } /* * Validation checks ([ADDRCONF], page 19) */ addr_type = ipv6_addr_type(&pinfo->prefix); if (addr_type & (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL)) return; valid_lft = ntohl(pinfo->valid); prefered_lft = ntohl(pinfo->prefered); if (prefered_lft > valid_lft) { net_warn_ratelimited("addrconf: prefix option has invalid lifetime\n"); return; } in6_dev = in6_dev_get(dev); if (!in6_dev) { net_dbg_ratelimited("addrconf: device %s not configured\n", dev->name); return; } /* * Two things going on here: * 1) Add routes for on-link prefixes * 2) Configure prefixes with the auto flag set */ if (pinfo->onlink) { struct rt6_info *rt; unsigned long rt_expires; /* Avoid arithmetic overflow. Really, we could * save rt_expires in seconds, likely valid_lft, * but it would require division in fib gc, that it * not good. */ if (HZ > USER_HZ) rt_expires = addrconf_timeout_fixup(valid_lft, HZ); else rt_expires = addrconf_timeout_fixup(valid_lft, USER_HZ); if (addrconf_finite_timeout(rt_expires)) rt_expires *= HZ; rt = addrconf_get_prefix_route(&pinfo->prefix, pinfo->prefix_len, dev, RTF_ADDRCONF | RTF_PREFIX_RT, RTF_GATEWAY | RTF_DEFAULT); if (rt) { /* Autoconf prefix route */ if (valid_lft == 0) { ip6_del_rt(rt); rt = NULL; } else if (addrconf_finite_timeout(rt_expires)) { /* not infinity */ rt6_set_expires(rt, jiffies + rt_expires); } else { rt6_clean_expires(rt); } } else if (valid_lft) { clock_t expires = 0; int flags = RTF_ADDRCONF | RTF_PREFIX_RT; if (addrconf_finite_timeout(rt_expires)) { /* not infinity */ flags |= RTF_EXPIRES; expires = jiffies_to_clock_t(rt_expires); } addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len, dev, expires, flags); } ip6_rt_put(rt); } /* Try to figure out our local address for this prefix */ if (pinfo->autoconf && in6_dev->cnf.autoconf) { struct in6_addr addr; bool tokenized = false, dev_addr_generated = false; if (pinfo->prefix_len == 64) { memcpy(&addr, &pinfo->prefix, 8); if (!ipv6_addr_any(&in6_dev->token)) { read_lock_bh(&in6_dev->lock); memcpy(addr.s6_addr + 8, in6_dev->token.s6_addr + 8, 8); read_unlock_bh(&in6_dev->lock); tokenized = true; } else if (is_addr_mode_generate_stable(in6_dev) && !ipv6_generate_stable_address(&addr, 0, in6_dev)) { addr_flags |= IFA_F_STABLE_PRIVACY; goto ok; } else if (ipv6_generate_eui64(addr.s6_addr + 8, dev) && ipv6_inherit_eui64(addr.s6_addr + 8, in6_dev)) { goto put; } else { dev_addr_generated = true; } goto ok; } net_dbg_ratelimited("IPv6 addrconf: prefix with wrong length %d\n", pinfo->prefix_len); goto put; ok: err = addrconf_prefix_rcv_add_addr(net, dev, pinfo, in6_dev, &addr, addr_type, addr_flags, sllao, tokenized, valid_lft, prefered_lft); if (err) goto put; /* Ignore error case here because previous prefix add addr was * successful which will be notified. */ ndisc_ops_prefix_rcv_add_addr(net, dev, pinfo, in6_dev, &addr, addr_type, addr_flags, sllao, tokenized, valid_lft, prefered_lft, dev_addr_generated); } inet6_prefix_notify(RTM_NEWPREFIX, in6_dev, pinfo); put: in6_dev_put(in6_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Aring44371.45%28.33%
Linus Torvalds (pre-git)7812.58%625.00%
Hideaki Yoshifuji / 吉藤英明264.19%312.50%
Jiri Pirko182.90%28.33%
Daniel Borkmann162.58%28.33%
Hannes Frederic Sowa111.77%312.50%
Shirley Ma91.45%14.17%
Lorenzo Colitti71.13%14.17%
Alexey Kuznetsov50.81%14.17%
Neil Horman40.65%14.17%
Jiri Benc20.32%14.17%
Joe Perches10.16%14.17%
Total620100.00%24100.00%

/* * Set destination address. * Special case for SIT interfaces where we create a new "virtual" * device. */
int addrconf_set_dstaddr(struct net *net, void __user *arg) { struct in6_ifreq ireq; struct net_device *dev; int err = -EINVAL; rtnl_lock(); err = -EFAULT; if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq))) goto err_exit; dev = __dev_get_by_index(net, ireq.ifr6_ifindex); err = -ENODEV; if (!dev) goto err_exit; #if IS_ENABLED(CONFIG_IPV6_SIT) if (dev->type == ARPHRD_SIT) { const struct net_device_ops *ops = dev->netdev_ops; struct ifreq ifr; struct ip_tunnel_parm p; err = -EADDRNOTAVAIL; if (!(ipv6_addr_type(&ireq.ifr6_addr) & IPV6_ADDR_COMPATv4)) goto err_exit; memset(&p, 0, sizeof(p)); p.iph.daddr = ireq.ifr6_addr.s6_addr32[3]; p.iph.saddr = 0; p.iph.version = 4; p.iph.ihl = 5; p.iph.protocol = IPPROTO_IPV6; p.iph.ttl = 64; ifr.ifr_ifru.ifru_data = (__force void __user *)&p; if (ops->ndo_do_ioctl) { mm_segment_t oldfs = get_fs(); set_fs(KERNEL_DS); err = ops->ndo_do_ioctl(dev, &ifr, SIOCADDTUNNEL); set_fs(oldfs); } else err = -EOPNOTSUPP; if (err == 0) { err = -ENOBUFS; dev = __dev_get_by_name(net, p.name); if (!dev) goto err_exit; err = dev_open(dev); } } #endif err_exit: rtnl_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)25882.17%428.57%
Stephen Hemminger319.87%321.43%
Daniel Lezcano123.82%17.14%
Joerg Roedel72.23%17.14%
Eric W. Biedermann20.64%17.14%
Ian Morris10.32%17.14%
David S. Miller10.32%17.14%
Al Viro10.32%17.14%
Américo Wang10.32%17.14%
Total314100.00%14100.00%


static int ipv6_mc_config(struct sock *sk, bool join, const struct in6_addr *addr, int ifindex) { int ret; ASSERT_RTNL(); lock_sock(sk); if (join) ret = ipv6_sock_mc_join(sk, ifindex, addr); else ret = ipv6_sock_mc_drop(sk, ifindex, addr); release_sock(sk); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Madhu Challa6797.10%150.00%
Marcelo Ricardo Leitner22.90%150.00%
Total69100.00%2100.00%

/* * Manual configuration of address on an interface */
static int inet6_addr_add(struct net *net, int ifindex, const struct in6_addr *pfx, const struct in6_addr *peer_pfx, unsigned int plen, __u32 ifa_flags, __u32 prefered_lft, __u32 valid_lft) { struct inet6_ifaddr *ifp; struct inet6_dev *idev; struct net_device *dev; unsigned long timeout; clock_t expires; int scope; u32 flags; ASSERT_RTNL(); if (plen > 128) return -EINVAL; /* check the lifetime */ if (!valid_lft || prefered_lft > valid_lft) return -EINVAL; if (ifa_flags & IFA_F_MANAGETEMPADDR && plen != 64) return -EINVAL; dev = __dev_get_by_index(net, ifindex); if (!dev) return -ENODEV; idev = addrconf_add_dev(dev); if (IS_ERR(idev)) return PTR_ERR(idev); if (ifa_flags & IFA_F_MCAUTOJOIN) { int ret = ipv6_mc_config(net->ipv6.mc_autojoin_sk, true, pfx, ifindex); if (ret < 0) return ret; } scope = ipv6_addr_scope(pfx); timeout = addrconf_timeout_fixup(valid_lft, HZ); if (addrconf_finite_timeout(timeout)) { expires = jiffies_to_clock_t(timeout * HZ); valid_lft = timeout; flags = RTF_EXPIRES; } else { expires = 0; flags = 0; ifa_flags |= IFA_F_PERMANENT; } timeout = addrconf_timeout_fixup(prefered_lft, HZ); if (addrconf_finite_timeout(timeout)) { if (timeout == 0) ifa_flags |= IFA_F_DEPRECATED; prefered_lft = timeout; } ifp = ipv6_add_addr(idev, pfx, peer_pfx, plen, scope, ifa_flags, valid_lft, prefered_lft); if (!IS_ERR(ifp)) { if (!(ifa_flags & IFA_F_NOPREFIXROUTE)) { addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev, expires, flags); } /* * Note that section 3.1 of RFC 4429 indicates * that the Optimistic flag should not be set for * manually configured addresses */ addrconf_dad_start(ifp); if (ifa_flags & IFA_F_MANAGETEMPADDR) manage_tempaddrs(idev, ifp, valid_lft, prefered_lft, true, jiffies); in6_ifa_put(ifp); addrconf_verify_rtnl(); return 0; } else if (ifa_flags & IFA_F_MCAUTOJOIN) { ipv6_mc_config(net->ipv6.mc_autojoin_sk, false, pfx, ifindex); } return PTR_ERR(ifp); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明9724.37%416.00%
Linus Torvalds (pre-git)9624.12%520.00%
Madhu Challa6616.58%14.00%
Noriaki Takamiya4210.55%28.00%
Jiri Pirko389.55%312.00%
Thomas Haller112.76%14.00%
Brian Haley112.76%14.00%
Thomas Graf112.76%14.00%
Daniel Lezcano112.76%14.00%
Nicolas Dichtel61.51%14.00%
Jiri Benc41.01%14.00%
Hannes Frederic Sowa20.50%14.00%
Eric Dumazet10.25%14.00%
Eric W. Biedermann10.25%14.00%
Neil Horman10.25%14.00%
Total398100.00%25100.00%


static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags, const struct in6_addr *pfx, unsigned int plen) { struct inet6_ifaddr *ifp; struct inet6_dev *idev; struct net_device *dev; if (plen > 128) return -EINVAL; dev = __dev_get_by_index(net, ifindex); if (!dev) return -ENODEV; idev = __in6_dev_get(dev); if (!idev) return -ENXIO; read_lock_bh(&idev->lock); list_for_each_entry(ifp, &idev->addr_list, if_list) { if (ifp->prefix_len == plen && ipv6_addr_equal(pfx, &ifp->addr)) { in6_ifa_hold(ifp); read_unlock_bh(&idev->lock); if (!(ifp->flags & IFA_F_TEMPORARY) && (ifa_flags & IFA_F_MANAGETEMPADDR)) manage_tempaddrs(idev, ifp, 0, 0, false, jiffies); ipv6_del_addr(ifp); addrconf_verify_rtnl(); if (ipv6_addr_is_multicast(pfx)) { ipv6_mc_config(net->ipv6.mc_autojoin_sk, false, pfx, dev->ifindex); } return 0; } } read_unlock_bh(&idev->lock); return -EADDRNOTAVAIL; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)11653.21%741.18%
Heiner Kallweit3817.43%15.88%
Madhu Challa2611.93%15.88%
Thomas Graf115.05%15.88%
Daniel Lezcano115.05%15.88%
Stephen Hemminger83.67%15.88%
Ian Morris52.29%211.76%
Hideaki Yoshifuji / 吉藤英明10.46%15.88%
Eric Dumazet10.46%15.88%
Eric W. Biedermann10.46%15.88%
Total218100.00%17100.00%


int addrconf_add_ifaddr(struct net *net, void __user *arg) { struct in6_ifreq ireq; int err; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq))) return -EFAULT; rtnl_lock(); err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, NULL, ireq.ifr6_prefixlen, IFA_F_PERMANENT, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); rtnl_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7376.84%222.22%
Daniel Lezcano77.37%111.11%
Noriaki Takamiya66.32%222.22%
Eric W. Biedermann55.26%111.11%
Nicolas Dichtel22.11%111.11%
Al Viro11.05%111.11%
David S. Miller11.05%111.11%
Total95100.00%9100.00%


int addrconf_del_ifaddr(struct net *net, void __user *arg) { struct in6_ifreq ireq; int err; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq))) return -EFAULT; rtnl_lock(); err = inet6_addr_del(net, ireq.ifr6_ifindex, 0, &ireq.ifr6_addr, ireq.ifr6_prefixlen); rtnl_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7382.02%550.00%
Daniel Lezcano77.87%110.00%
Eric W. Biedermann55.62%110.00%
Heiner Kallweit22.25%110.00%
Al Viro11.12%110.00%
David S. Miller11.12%110.00%
Total89100.00%10100.00%


static void add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int plen, int scope) { struct inet6_ifaddr *ifp; ifp = ipv6_add_addr(idev, addr, NULL, plen, scope, IFA_F_PERMANENT, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); if (!IS_ERR(ifp)) { spin_lock_bh(&ifp->lock); ifp->flags &= ~IFA_F_TENTATIVE; spin_unlock_bh(&ifp->lock); rt_genid_bump_ipv6(dev_net(idev->dev)); ipv6_ifa_notify(RTM_NEWADDR, ifp); in6_ifa_put(ifp); } }

Contributors

PersonTokensPropCommitsCommitProp
Ilpo Järvinen8884.62%120.00%
Paolo Abeni109.62%120.00%
Jiri Benc21.92%120.00%
Hannes Frederic Sowa21.92%120.00%
Jiri Pirko21.92%120.00%
Total104100.00%5100.00%

#if IS_ENABLED(CONFIG_IPV6_SIT)
static void sit_add_v4_addrs(struct inet6_dev *idev) { struct in6_addr addr; struct net_device *dev; struct net *net = dev_net(idev->dev); int scope, plen; u32 pflags = 0; ASSERT_RTNL(); memset(&addr, 0, sizeof(struct in6_addr)); memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4); if (idev->dev->flags&IFF_POINTOPOINT) { addr.s6_addr32[0] = htonl(0xfe800000); scope = IFA_LINK; plen = 64; } else { scope = IPV6_ADDR_COMPATv4; plen = 96; pflags |= RTF_NONEXTHOP; } if (addr.s6_addr32[3]) { add_addr(idev, &addr, plen, scope); addrconf_prefix_route(&addr, plen, idev->dev, 0, pflags); return; } for_each_netdev(net, dev) { struct in_device *in_dev = __in_dev_get_rtnl(dev); if (in_dev && (dev->flags & IFF_UP)) { struct in_ifaddr *ifa; int flag = scope; for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { addr.s6_addr32[3] = ifa->ifa_local; if (ifa->ifa_scope == RT_SCOPE_LINK) continue; if (ifa->ifa_scope >= RT_SCOPE_HOST) { if (idev->dev->flags&IFF_POINTOPOINT) continue; flag |= IFA_HOST; } add_addr(idev, &addr, plen, flag); addrconf_prefix_route(&addr, plen, idev->dev, 0, pflags); } } } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)22575.50%640.00%
Nicolas Dichtel5117.11%213.33%
Benjamin Thery103.36%16.67%
Pavel Emelyanov41.34%16.67%
Hideaki Yoshifuji / 吉藤英明41.34%213.33%
Ilpo Järvinen20.67%16.67%
Eric W. Biedermann10.34%16.67%
Herbert Xu10.34%16.67%
Total298100.00%15100.00%

#endif
static void init_loopback(struct net_device *dev) { struct inet6_dev *idev; struct net_device *sp_dev; struct inet6_ifaddr *sp_ifa; struct rt6_info *sp_rt; /* ::1 */ ASSERT_RTNL(); idev = ipv6_find_idev(dev); if (!idev) { pr_debug("%s: add_dev failed\n", __func__); return; } add_addr(idev, &in6addr_loopback, 128, IFA_HOST); /* Add routes to other interface's IPv6 addresses */ for_each_netdev(dev_net(dev), sp_dev) { if (!strcmp(sp_dev->name, dev->name)) continue; idev = __in6_dev_get(sp_dev); if (!idev) continue; read_lock_bh(&idev->lock); list_for_each_entry(sp_ifa, &idev->addr_list, if_list) { if (sp_ifa->flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE)) continue; if (sp_ifa->rt) { /* This dst has been added to garbage list when * lo device down, release this obsolete dst and * reallocate a new router for ifa. */ if (!atomic_read(&sp_ifa->rt->rt6i_ref)) { ip6_rt_put(sp_ifa->rt); sp_ifa->rt = NULL; } else { continue; } } sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, false); /* Failure cases are ignored */ if (!IS_ERR(sp_rt)) { sp_ifa->rt = sp_rt; ip6_ins_rt(sp_rt); } } read_unlock_bh(&idev->lock); } }

Contributors

PersonTokensPropCommitsCommitProp
Balakumaran Kannan11853.15%15.88%
Gao Feng4319.37%317.65%
Linus Torvalds (pre-git)4319.37%635.29%
Nicolas Dichtel62.70%15.88%
Ian Morris52.25%211.76%
Joe Perches41.80%15.88%
Ilpo Järvinen10.45%15.88%
François-Xavier Le Bail10.45%15.88%
Hideaki Yoshifuji / 吉藤英明10.45%15.88%
Total222100.00%17100.00%


void addrconf_add_linklocal(struct inet6_dev *idev, const struct in6_addr *addr, u32 flags) { struct inet6_ifaddr *ifp; u32 addr_flags = flags | IFA_F_PERMANENT; #ifdef CONFIG_IPV6_OPTIMISTIC_DAD if (idev->cnf.optimistic_dad && !dev_net(idev->dev)->ipv6.devconf_all->forwarding) addr_flags |= IFA_F_OPTIMISTIC; #endif ifp = ipv6_add_addr(idev, addr, NULL, 64, IFA_LINK, addr_flags, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); if (!IS_ERR(ifp)) { addrconf_prefix_route(&ifp->addr, ifp->prefix_len, idev->dev, 0, 0); addrconf_dad_start(ifp); in6_ifa_put(ifp); } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4939.84%321.43%
Hideaki Yoshifuji / 吉藤英明2923.58%428.57%
Neil Horman2721.95%17.14%
Hannes Frederic Sowa75.69%214.29%
David S. Miller64.88%17.14%
Jiri Benc21.63%17.14%
Jiri Pirko21.63%17.14%
Eric Dumazet10.81%17.14%
Total123100.00%14100.00%

EXPORT_SYMBOL_GPL(addrconf_add_linklocal);
static bool ipv6_reserved_interfaceid(struct in6_addr address) { if ((address.s6_addr32[2] | address.s6_addr32[3]) == 0) return true; if (address.s6_addr32[2] == htonl(0x02005eff) && ((address.s6_addr32[3] & htonl(0xfe000000)) == htonl(0xfe000000))) return true; if (address.s6_addr32[2] == htonl(0xfdffffff) && ((address.s6_addr32[3] & htonl(0xffffff80)) == htonl(0xffffff80))) return true; return false; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa8777.68%125.00%
Jiri Pirko2017.86%125.00%
Linus Torvalds (pre-git)54.46%250.00%
Total112100.00%4100.00%


static int ipv6_generate_stable_address(struct in6_addr *address, u8 dad_count, const struct inet6_dev *idev) { static DEFINE_SPINLOCK(lock); static __u32 digest[SHA_DIGEST_WORDS]; static __u32 workspace[SHA_WORKSPACE_WORDS]; static union { char __data[SHA_MESSAGE_BYTES]; struct { struct in6_addr secret; __be32 prefix[2]; unsigned char hwaddr[MAX_ADDR_LEN]; u8 dad_count; } __packed; } data; struct in6_addr secret; struct in6_addr temp; struct net *net = dev_net(idev->dev); BUILD_BUG_ON(sizeof(data.__data) != sizeof(data)); if (idev->cnf.stable_secret.initialized) secret = idev->cnf.stable_secret.secret; else if (net->ipv6.devconf_dflt->stable_secret.initialized) secret = net->ipv6.devconf_dflt->stable_secret.secret; else return -1; retry: spin_lock_bh(&lock); sha_init(digest); memset(&data, 0, sizeof(data)); memset(workspace, 0, sizeof(workspace)); memcpy(data.hwaddr, idev->dev->perm_addr, idev->dev->addr_len); data.prefix[0] = address->s6_addr32[0]; data.prefix[1] = address->s6_addr32[1]; data.secret = secret; data.dad_count = dad_count; sha_transform(digest, data.__data, workspace); temp = *address; temp.s6_addr32[2] = (__force __be32)digest[0]; temp.s6_addr32[3] = (__force __be32)digest[1]; spin_unlock_bh(&lock); if (ipv6_reserved_interfaceid(temp)) { dad_count++; if (dad_count > dev_net(idev->dev)->ipv6.sysctl.idgen_retries) return -1; goto retry; } *address = temp; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa34897.48%342.86%
Linus Torvalds (pre-git)51.40%342.86%
Jiri Pirko41.12%114.29%
Total357100.00%7100.00%


static void ipv6_gen_mode_random_init(struct inet6_dev *idev) { struct ipv6_stable_secret *s = &idev->cnf.stable_secret; if (s->initialized) return; s = &idev->cnf.stable_secret; get_random_bytes(&s->secret, sizeof(s->secret)); s->initialized = true; }

Contributors

PersonTokensPropCommitsCommitProp
Björn Mork60100.00%1100.00%
Total60100.00%1100.00%


static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route) { struct in6_addr addr; /* no link local addresses on L3 master devices */ if (netif_is_l3_master(idev->dev)) return; ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0); switch (idev->cnf.addr_gen_mode) { case IN6_ADDR_GEN_MODE_RANDOM: ipv6_gen_mode_random_init(idev); /* fallthrough */ case IN6_ADDR_GEN_MODE_STABLE_PRIVACY: if (!ipv6_generate_stable_address(&addr, 0, idev)) addrconf_add_linklocal(idev, &addr, IFA_F_STABLE_PRIVACY); else if (prefix_route) addrconf_prefix_route(&addr, 64, idev->dev, 0, 0); break; case IN6_ADDR_GEN_MODE_EUI64: /* addrconf_add_linklocal also adds a prefix_route and we * only need to care about prefix routes if ipv6_generate_eui64 * couldn't generate one. */ if (ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) == 0) addrconf_add_linklocal(idev, &addr, 0); else if (prefix_route) addrconf_prefix_route(&addr, 64, idev->dev, 0, 0); break; case IN6_ADDR_GEN_MODE_NONE: default: /* will not add any link local address */ break; } }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa13679.07%240.00%
Björn Mork2313.37%120.00%
David Ahern116.40%120.00%
Felix Jia21.16%120.00%
Total172100.00%5100.00%


static void addrconf_dev_config(struct net_device *dev) { struct inet6_dev *idev; ASSERT_RTNL(); if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_FDDI) && (dev->type != ARPHRD_ARCNET) && (dev->type != ARPHRD_INFINIBAND) && (dev->type != ARPHRD_IEEE1394) && (dev->type != ARPHRD_TUNNEL6) && (dev->type != ARPHRD_6LOWPAN) && (dev->type != ARPHRD_IP6GRE) && (dev->type != ARPHRD_IPGRE) && (dev->type != ARPHRD_TUNNEL) && (dev->type != ARPHRD_NONE)) { /* Alas, we support only Ethernet autoconfiguration. */ return; } idev = addrconf_add_dev(dev); if (IS_ERR(idev)) return; /* this device type has no EUI support */ if (dev->type == ARPHRD_NONE && idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64) idev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_RANDOM; addrconf_addr_gen(idev, false); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa5635.00%18.33%
Björn Mork2918.12%18.33%
Felix Jia2817.50%216.67%
Linus Torvalds (pre-git)1811.25%216.67%
Nicolas Dichtel85.00%18.33%
Jukka Rissanen85.00%18.33%
Herbert Xu53.12%18.33%
Brian Haley31.88%18.33%
Hideaki Yoshifuji / 吉藤英明31.88%18.33%
Jiri Pirko21.25%18.33%
Total160100.00%12100.00%

#if IS_ENABLED(CONFIG_IPV6_SIT)
static void addrconf_sit_config(struct net_device *dev) { struct inet6_dev *idev; ASSERT_RTNL(); /* * Configure the tunnel with one of our IPv4 * addresses... we should configure all of * our v4 addrs in the tunnel */ idev = ipv6_find_idev(dev); if (!idev) { pr_debug("%s: add_dev failed\n", __func__); return; } if (dev->priv_flags & IFF_ISATAP) { addrconf_addr_gen(idev, false); return; } sit_add_v4_addrs(idev); if (dev->flags&IFF_POINTOPOINT) addrconf_add_mroute(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5064.10%753.85%
Fred L. Templin1620.51%17.69%
Ian Morris56.41%215.38%
Joe Perches45.13%17.69%
Jiri Pirko22.56%17.69%
Hideaki Yoshifuji / 吉藤英明11.28%17.69%
Total78100.00%13100.00%

#endif #if IS_ENABLED(CONFIG_NET_IPGRE)
static void addrconf_gre_config(struct net_device *dev) { struct inet6_dev *idev; ASSERT_RTNL(); idev = ipv6_find_idev(dev); if (!idev) { pr_debug("%s: add_dev failed\n", __func__); return; } addrconf_addr_gen(idev, true); if (dev->flags & IFF_POINTOPOINT) addrconf_add_mroute(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger3557.38%114.29%
Hannes Frederic Sowa1321.31%114.29%
Ian Morris58.20%228.57%
Joe Perches46.56%114.29%
Jiri Pirko23.28%114.29%
Nicolas Dichtel23.28%114.29%
Total61100.00%7100.00%

#endif
static int fixup_permanent_addr(struct inet6_dev *idev, struct inet6_ifaddr *ifp) { /* rt6i_ref == 0 means the host route was removed from the * FIB, for example, if 'lo' device is taken down. In that * case regenerate the host route. */ if (!ifp->rt || !atomic_read(&ifp->rt->rt6i_ref)) { struct rt6_info *rt, *prev; rt = addrconf_dst_alloc(idev, &ifp->addr, false); if (unlikely(IS_ERR(rt))) return PTR_ERR(rt); /* ifp->rt can be accessed outside of rtnl */ spin_lock(&ifp->lock); prev = ifp->rt; ifp->rt = rt; spin_unlock(&ifp->lock); ip6_rt_put(prev); } if (!(ifp->flags & IFA_F_NOPREFIXROUTE)) { addrconf_prefix_route(&ifp->addr, ifp->prefix_len, idev->dev, 0, 0); } addrconf_dad_start(ifp); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
David Ahern150100.00%2100.00%
Total150100.00%2100.00%


static void addrconf_permanent_addr(struct net_device *dev) { struct inet6_ifaddr *ifp, *tmp; struct inet6_dev *idev; idev = __in6_dev_get(dev); if (!idev) return; write_lock_bh(&idev->lock); list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) { if ((ifp->flags & IFA_F_PERMANENT) && fixup_permanent_addr(idev, ifp) < 0) { write_unlock_bh(&idev->lock); ipv6_del_addr(ifp); write_lock_bh(&idev->lock); net_info_ratelimited("%s: Failed to add prefix route for address %pI6c; dropping\n", idev->dev->name, &ifp->addr); } } write_unlock_bh(&idev->lock); }

Contributors

PersonTokensPropCommitsCommitProp
David Ahern123100.00%1100.00%
Total123100.00%1100.00%


static int addrconf_notify(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_changeupper_info *info; struct inet6_dev *idev = __in6_dev_get(dev); int run_pending = 0; int err; switch (event) { case NETDEV_REGISTER: if (!idev && dev->mtu >= IPV6_MIN_MTU) { idev = ipv6_add_dev(dev); if (IS_ERR(idev)) return notifier_from_errno(PTR_ERR(idev)); } break; case NETDEV_CHANGEMTU: /* if MTU under IPV6_MIN_MTU stop IPv6 on this interface. */ if (dev->mtu < IPV6_MIN_MTU) { addrconf_ifdown(dev, 1); break; } if (idev) { rt6_mtu_change(dev, dev->mtu); idev->cnf.mtu6 = dev->mtu; break; } /* allocate new idev */ idev = ipv6_add_dev(dev); if (IS_ERR(idev)) break; /* device is still not ready */ if (!(idev->if_flags & IF_READY)) break; run_pending = 1; /* fall through */ case NETDEV_UP: case NETDEV_CHANGE: if (dev->flags & IFF_SLAVE) break; if (idev && idev->cnf.disable_ipv6) break; if (event == NETDEV_UP) { /* restore routes for permanent addresses */ addrconf_permanent_addr(dev); if (!addrconf_qdisc_ok(dev)) { /* device is not ready yet. */ pr_info("ADDRCONF(NETDEV_UP): %s: link is not ready\n", dev->name); break; } if (!idev && dev->mtu >= IPV6_MIN_MTU) idev = ipv6_add_dev(dev); if (!IS_ERR_OR_NULL(idev)) { idev->if_flags |= IF_READY; run_pending = 1; } } else if (event == NETDEV_CHANGE) { if (!addrconf_qdisc_ok(dev)) { /* device is still not ready. */ break; } if (idev) { if (idev->if_flags & IF_READY) { /* device is already configured - * but resend MLD reports, we might * have roamed and need to update * multicast snooping switches */ ipv6_mc_up(idev); break; } idev->if_flags |= IF_READY; } pr_info("ADDRCONF(NETDEV_CHANGE): %s: link becomes ready\n", dev->name); run_pending = 1; } switch (dev->type) { #if IS_ENABLED(CONFIG_IPV6_SIT) case ARPHRD_SIT: addrconf_sit_config(dev); break; #endif #if IS_ENABLED(CONFIG_NET_IPGRE) case ARPHRD_IPGRE: addrconf_gre_config(dev); break; #endif case ARPHRD_LOOPBACK: init_loopback(dev); break; default: addrconf_dev_config(dev); break; } if (!IS_ERR_OR_NULL(idev)) { if (run_pending) addrconf_dad_run(idev); /* * If the MTU changed during the interface down, * when the interface up, the changed MTU must be * reflected in the idev as well as routers. */ if (idev->cnf.mtu6 != dev->mtu && dev->mtu >= IPV6_MIN_MTU) { rt6_mtu_change(dev, dev->mtu); idev->cnf.mtu6 = dev->mtu; } idev->tstamp = jiffies; inet6_ifinfo_notify(RTM_NEWLINK, idev); /* * If the changed mtu during down is lower than * IPV6_MIN_MTU stop IPv6 on this interface. */ if (dev->mtu < IPV6_MIN_MTU) addrconf_ifdown(dev, 1); } break; case NETDEV_DOWN: case NETDEV_UNREGISTER: /* * Remove all addresses from this interface. */ addrconf_ifdown(dev, event != NETDEV_DOWN); break; case NETDEV_CHANGENAME: if (idev) { snmp6_unregister_dev(idev); addrconf_sysctl_unregister(idev); err = addrconf_sysctl_register(idev); if (err) return notifier_from_errno(err); err = snmp6_register_dev(idev); if (err) { addrconf_sysctl_unregister(idev); return notifier_from_errno(err); } } break; case NETDEV_PRE_TYPE_CHANGE: case NETDEV_POST_TYPE_CHANGE: if (idev) addrconf_type_change(dev, event); break; case NETDEV_CHANGEUPPER: info = ptr; /* flush all routes if dev is linked to or unlinked from * an L3 master device (e.g., VRF) */ if (info->upper_dev && netif_is_l3_master(info->upper_dev)) addrconf_ifdown(dev, 0); } return NOTIFY_OK; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明11718.99%49.52%
Linus Torvalds (pre-git)10517.05%1023.81%
Alexander Duyck8914.45%12.38%
Shirley Ma599.58%24.76%
Américo Wang477.63%37.14%
David Ahern396.33%24.76%
Stephen Hemminger315.03%49.52%
Herbert Xu243.90%24.76%
Evgeniy Polyakov182.92%12.38%
Dan Aloni132.11%12.38%
Moni Shoua111.79%12.38%
Kristian Slavov101.62%12.38%
Jay Vosburgh91.46%12.38%
Linus Lüssing81.30%12.38%
Jiri Pirko81.30%24.76%
Joerg Roedel71.14%12.38%
Benjamin Thery60.97%12.38%
Eric Dumazet50.81%12.38%
Andrew Lunn40.65%12.38%
Joe Perches40.65%12.38%
Mitsuru Chinen20.32%12.38%
Total616100.00%42100.00%

/* * addrconf module should be notified of a device going up */ static struct notifier_block ipv6_dev_notf = { .notifier_call = addrconf_notify, };
static void addrconf_type_change(struct net_device *dev, unsigned long event) { struct inet6_dev *idev; ASSERT_RTNL(); idev = __in6_dev_get(dev); if (event == NETDEV_POST_TYPE_CHANGE) ipv6_mc_remap(idev); else if (event == NETDEV_PRE_TYPE_CHANGE) ipv6_mc_unmap(idev); }

Contributors

PersonTokensPropCommitsCommitProp
Moni Shoua5094.34%150.00%
Jiri Pirko35.66%150.00%
Total53100.00%2100.00%


static bool addr_is_local(const struct in6_addr *addr) { return ipv6_addr_type(addr) & (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK); }

Contributors

PersonTokensPropCommitsCommitProp
David Ahern24100.00%1100.00%
Total24100.00%1100.00%


static int addrconf_ifdown(struct net_device *dev, int how) { struct net *net = dev_net(dev); struct inet6_dev *idev; struct inet6_ifaddr *ifa, *tmp; struct list_head del_list; int _keep_addr; bool keep_addr; int state, i; ASSERT_RTNL(); rt6_ifdown(net, dev); neigh_ifdown(&nd_tbl, dev); idev = __in6_dev_get(dev); if (!idev) return -ENODEV; /* * Step 1: remove reference to ipv6 device from parent device. * Do not dev_put! */ if (how) { idev->dead = 1; /* protected by rtnl_lock */ RCU_INIT_POINTER(dev->ip6_ptr, NULL); /* Step 1.5: remove snmp6 entry */ snmp6_unregister_dev(idev); } /* aggregate the system setting and interface setting */ _keep_addr = net->ipv6.devconf_all->keep_addr_on_down; if (!_keep_addr) _keep_addr = idev->cnf.keep_addr_on_down; /* combine the user config with event to determine if permanent * addresses are to be removed from address hash table */ keep_addr = !(how || _keep_addr <= 0 || idev->cnf.disable_ipv6); /* Step 2: clear hash table */ for (i = 0; i < IN6_ADDR_HSIZE; i++) { struct hlist_head *h = &inet6_addr_lst[i]; spin_lock_bh(&addrconf_hash_lock); restart: hlist_for_each_entry_rcu(ifa, h, addr_lst) { if (ifa->idev == idev) { addrconf_del_dad_work(ifa); /* combined flag + permanent flag decide if * address is retained on a down event */ if (!keep_addr || !(ifa->flags & IFA_F_PERMANENT) || addr_is_local(&ifa->addr)) { hlist_del_init_rcu(&ifa->addr_lst); goto restart; } } } spin_unlock_bh(&addrconf_hash_lock); } write_lock_bh(&idev->lock); addrconf_del_rs_timer(idev); /* Step 2: clear flags for stateless addrconf */ if (!how) idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY); /* Step 3: clear tempaddr list */ while (!list_empty(&idev->tempaddr_list)) { ifa = list_first_entry(&idev->tempaddr_list, struct inet6_ifaddr, tmp_list); list_del(&ifa->tmp_list); write_unlock_bh(&idev->lock); spin_lock_bh(&ifa->lock); if (ifa->ifpub) { in6_ifa_put(ifa->ifpub); ifa->ifpub = NULL; } spin_unlock_bh(&ifa->lock); in6_ifa_put(ifa); write_lock_bh(&idev->lock); } /* re-combine the user config with event to determine if permanent * addresses are to be removed from the interface list */ keep_addr = (!how && _keep_addr > 0 && !idev->cnf.disable_ipv6); INIT_LIST_HEAD(&del_list); list_for_each_entry_safe(ifa, tmp, &idev->addr_list, if_list) { struct rt6_info *rt = NULL; bool keep; addrconf_del_dad_work(ifa); keep = keep_addr && (ifa->flags & IFA_F_PERMANENT) && !addr_is_local(&ifa->addr); if (!keep) list_move(&ifa->if_list, &del_list); write_unlock_bh(&idev->lock); spin_lock_bh(&ifa->lock); if (keep) { /* set state to skip the notifier below */ state = INET6_IFADDR_STATE_DEAD; ifa->state = 0; if (!(ifa->flags & IFA_F_NODAD)) ifa->flags |= IFA_F_TENTATIVE; rt = ifa->rt; ifa->rt = NULL; } else { state = ifa->state; ifa->state = INET6_IFADDR_STATE_DEAD; } spin_unlock_bh(&ifa->lock); if (rt) ip6_del_rt(rt); if (state != INET6_IFADDR_STATE_DEAD) { __ipv6_ifa_notify(RTM_DELADDR, ifa); inet6addr_notifier_call_chain(NETDEV_DOWN, ifa); } else { if (idev->cnf.forwarding) addrconf_leave_anycast(ifa); addrconf_leave_solict(ifa->idev, &ifa->addr); } write_lock_bh(&idev->lock); } write_unlock_bh(&idev->lock); /* now clean up addresses to be removed */ while (!list_empty(&del_list)) { ifa = list_first_entry(&del_list, struct inet6_ifaddr, if_list); list_del(&ifa->if_list); in6_ifa_put(ifa); } /* Step 5: Discard anycast and multicast list */ if (how) { ipv6_ac_destroy_dev(idev); ipv6_mc_destroy_dev(idev); } else { ipv6_mc_down(idev); } idev->tstamp = jiffies; /* Last: Shot the device (if unregistered) */ if (how) { addrconf_sysctl_unregister(idev); neigh_parms_release(&nd_tbl, idev->nd_parms); neigh_ifdown(&nd_tbl, dev); in6_dev_put(idev); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
David Ahern21829.38%37.50%
Linus Torvalds (pre-git)12616.98%717.50%
Herbert Xu9512.80%37.50%
David S. Miller8211.05%12.50%
Stephen Hemminger7910.65%820.00%
Mike Manning415.53%25.00%
Rabin Vincent415.53%12.50%
Hideaki Yoshifuji / 吉藤英明243.23%410.00%
Sabrina Dubroca101.35%12.50%
Hannes Frederic Sowa70.94%37.50%
Vladislav Yasevich60.81%12.50%
Shirley Ma60.81%12.50%
Daniel Lezcano20.27%12.50%
Lorenzo Colitti20.27%12.50%
Américo Wang10.13%12.50%
John Fastabend10.13%12.50%
Ian Morris10.13%12.50%
Total742100.00%40100.00%


static void addrconf_rs_timer(unsigned long data) { struct inet6_dev *idev = (struct inet6_dev *)data; struct net_device *dev = idev->dev; struct in6_addr lladdr; write_lock(&idev->lock); if (idev->dead || !(idev->if_flags & IF_READY)) goto out; if (!ipv6_accept_ra(idev)) goto out; /* Announcement received after solicitation was sent */ if (idev->if_flags & IF_RA_RCVD) goto out; if (idev->rs_probes++ < idev->cnf.rtr_solicits || idev->cnf.rtr_solicits < 0) { write_unlock(&idev->lock); if (!ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE)) ndisc_send_rs(dev, &lladdr, &in6addr_linklocal_allrouters); else goto put; write_lock(&idev->lock); idev->rs_interval = rfc3315_s14_backoff_update( idev->rs_interval, idev->cnf.rtr_solicit_max_interval); /* The wait after the last probe can be shorter */ addrconf_mod_rs_timer(idev, (idev->rs_probes == idev->cnf.rtr_solicits) ? idev->cnf.rtr_solicit_delay : idev->rs_interval); } else { /* * Note: we do not support deprecated "all on-link" * assumption any longer. */ pr_debug("%s: no IPv6 routers present\n", idev->dev->name); } out: write_unlock(&idev->lock); put: in6_dev_put(idev); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7532.89%640.00%
Hannes Frederic Sowa4017.54%16.67%
Stephen Hemminger3414.91%16.67%
Américo Wang3013.16%16.67%
Maciej Żenczykowski2611.40%16.67%
Linus Torvalds177.46%213.33%
Shmulik Ladkani41.75%16.67%
Joe Perches10.44%16.67%
Hideaki Yoshifuji / 吉藤英明10.44%16.67%
Total228100.00%15100.00%

/* * Duplicate Address Detection */
static void addrconf_dad_kick(struct inet6_ifaddr *ifp) { unsigned long rand_num; struct inet6_dev *idev = ifp->idev; u64 nonce; if (ifp->flags & IFA_F_OPTIMISTIC) rand_num = 0; else rand_num = prandom_u32() % (idev->cnf.rtr_solicit_delay ? : 1); nonce = 0; if (idev->cnf.enhanced_dad || dev_net(idev->dev)->ipv6.devconf_all->enhanced_dad) { do get_random_bytes(&nonce, 6); while (nonce == 0); } ifp->dad_nonce = nonce; ifp->dad_probes = idev->cnf.dad_transmits; addrconf_mod_dad_work(ifp, rand_num); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5444.26%116.67%
Erik Nordmark5242.62%116.67%
Neil Horman1310.66%116.67%
Hannes Frederic Sowa21.64%233.33%
Aruna-Hewapathirane10.82%116.67%
Total122100.00%6100.00%


static void addrconf_dad_begin(struct inet6_ifaddr *ifp) { struct inet6_dev *idev = ifp->idev; struct net_device *dev = idev->dev; bool bump_id, notify = false; addrconf_join_solict(dev, &ifp->addr); prandom_seed((__force u32) ifp->addr.s6_addr32[3]); read_lock_bh(&idev->lock); spin_lock(&ifp->lock); if (ifp->state == INET6_IFADDR_STATE_DEAD) goto out; if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) || idev->cnf.accept_dad < 1 || !(ifp->flags&IFA_F_TENTATIVE) || ifp->flags & IFA_F_NODAD) { bump_id = ifp->flags & IFA_F_TENTATIVE; ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED); spin_unlock(&ifp->lock); read_unlock_bh(&idev->lock); addrconf_dad_completed(ifp, bump_id); return; } if (!(idev->if_flags & IF_READY)) { spin_unlock(&ifp->lock); read_unlock_bh(&idev->lock); /* * If the device is not ready: * - keep it tentative if it is a permanent address. * - otherwise, kill it. */ in6_ifa_hold(ifp); addrconf_dad_stop(ifp, 0); return; } /* * Optimistic nodes can start receiving * Frames right away */ if (ifp->flags & IFA_F_OPTIMISTIC) { ip6_ins_rt(ifp->rt); if (ipv6_use_optimistic_addr(idev)) { /* Because optimistic nodes can use this address, * notify listeners. If DAD fails, RTM_DELADDR is sent. */ notify = true; } } addrconf_dad_kick(ifp); out: spin_unlock(&ifp->lock); read_unlock_bh(&idev->lock); if (notify) ipv6_ifa_notify(RTM_NEWADDR, ifp); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)9232.86%729.17%
Hideaki Yoshifuji / 吉藤英明9132.50%520.83%
Neil Horman207.14%14.17%
Subash Abhinov Kasiviswanathan196.79%14.17%
Erik Kline134.64%14.17%
Herbert Xu134.64%28.33%
Paolo Abeni124.29%14.17%
Noriaki Takamiya62.14%14.17%
Aruna-Hewapathirane51.79%14.17%
Brian Haley41.43%14.17%
Stephen Hemminger31.07%14.17%
Hannes Frederic Sowa10.36%14.17%
Masatake YAMATO10.36%14.17%
Total280100.00%24100.00%


static void addrconf_dad_start(struct inet6_ifaddr *ifp) { bool begin_dad = false; spin_lock_bh(&ifp->lock); if (ifp->state != INET6_IFADDR_STATE_DEAD) { ifp->state = INET6_IFADDR_STATE_PREDAD; begin_dad = true; } spin_unlock_bh(&ifp->lock); if (begin_dad) addrconf_mod_dad_work(ifp, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa6095.24%266.67%
Linus Torvalds (pre-git)34.76%133.33%
Total63100.00%3100.00%


static void addrconf_dad_work(struct work_struct *w) { struct inet6_ifaddr *ifp = container_of(to_delayed_work(w), struct inet6_ifaddr, dad_work); struct inet6_dev *idev = ifp->idev; bool bump_id, disable_ipv6 = false; struct in6_addr mcaddr; enum { DAD_PROCESS, DAD_BEGIN, DAD_ABORT, } action = DAD_PROCESS; rtnl_lock(); spin_lock_bh(&ifp->lock); if (ifp->state == INET6_IFADDR_STATE_PREDAD) { action = DAD_BEGIN; ifp->state = INET6_IFADDR_STATE_DAD; } else if (ifp->state == INET6_IFADDR_STATE_ERRDAD) { action = DAD_ABORT; ifp->state = INET6_IFADDR_STATE_POSTDAD; if (idev->cnf.accept_dad > 1 && !idev->cnf.disable_ipv6 && !(ifp->flags & IFA_F_STABLE_PRIVACY)) { struct in6_addr addr; addr.s6_addr32[0] = htonl(0xfe800000); addr.s6_addr32[1] = 0; if (!ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) && ipv6_addr_equal(&ifp->addr, &addr)) { /* DAD failed for link-local based on MAC */ idev->cnf.disable_ipv6 = 1; pr_info("%s: IPv6 being disabled!\n", ifp->idev->dev->name); disable_ipv6 = true; } } } spin_unlock_bh(&ifp->lock); if (action == DAD_BEGIN) { addrconf_dad_begin(ifp); goto out; } else if (action == DAD_ABORT) { in6_ifa_hold(ifp); addrconf_dad_stop(ifp, 1); if (disable_ipv6) addrconf_ifdown(idev->dev, 0); goto out; } if (!ifp->dad_probes && addrconf_dad_end(ifp)) goto out; write_lock_bh(&idev->lock); if (idev->dead || !(idev->if_flags & IF_READY)) { write_unlock_bh(&idev->lock); goto out; } spin_lock(&ifp->lock); if (ifp->state == INET6_IFADDR_STATE_DEAD) { spin_unlock(&ifp->lock); write_unlock_bh(&idev->lock); goto out; } if (ifp->dad_probes == 0) { /* * DAD was successful */ bump_id = ifp->flags & IFA_F_TENTATIVE; ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED); spin_unlock(&ifp->lock); write_unlock_bh(&idev->lock); addrconf_dad_completed(ifp, bump_id); goto out; } ifp->dad_probes--; addrconf_mod_dad_work(ifp, NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME)); spin_unlock(&ifp->lock); write_unlock_bh(&idev->lock); /* send a neighbour solicitation for our addr */ addrconf_addr_solict_mult(&ifp->addr, &mcaddr); ndisc_send_ns(ifp->idev->dev, &ifp->addr, &mcaddr, &in6addr_any, ifp->dad_nonce); out: in6_ifa_put(ifp); rtnl_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa13726.81%313.64%
Mike Manning12624.66%14.55%
Linus Torvalds (pre-git)10520.55%418.18%
Hideaki Yoshifuji / 吉藤英明519.98%29.09%
Herbert Xu428.22%29.09%
Paolo Abeni163.13%14.55%
Stephen Hemminger122.35%29.09%
Wei Yongjun50.98%14.55%
Jiri Pirko50.98%14.55%
Neil Horman40.78%14.55%
Erik Nordmark40.78%14.55%
Linus Torvalds20.39%29.09%
Brian Haley20.39%14.55%
Total511100.00%22100.00%

/* ifp->idev must be at least read locked */
static bool ipv6_lonely_lladdr(struct inet6_ifaddr *ifp) { struct inet6_ifaddr *ifpiter; struct inet6_dev *idev = ifp->idev; list_for_each_entry_reverse(ifpiter, &idev->addr_list, if_list) { if (ifpiter->scope > IFA_LINK) break; if (ifp != ifpiter && ifpiter->scope == IFA_LINK && (ifpiter->flags & (IFA_F_PERMANENT|IFA_F_TENTATIVE| IFA_F_OPTIMISTIC|IFA_F_DADFAILED)) == IFA_F_PERMANENT) return false; } return true; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa80100.00%2100.00%
Total80100.00%2100.00%


static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id) { struct net_device *dev = ifp->idev->dev; struct in6_addr lladdr; bool send_rs, send_mld; addrconf_del_dad_work(ifp); /* * Configure the address for reception. Now it is valid. */ ipv6_ifa_notify(RTM_NEWADDR, ifp); /* If added prefix is link local and we are prepared to process router advertisements, start sending router solicitations. */ read_lock_bh(&ifp->idev->lock); send_mld = ifp->scope == IFA_LINK && ipv6_lonely_lladdr(ifp); send_rs = send_mld && ipv6_accept_ra(ifp->idev) && ifp->idev->cnf.rtr_solicits != 0 && (dev->flags&IFF_LOOPBACK) == 0; read_unlock_bh(&ifp->idev->lock); /* While dad is in progress mld report's source address is in6_addrany. * Resend with proper ll now. */ if (send_mld) ipv6_mc_dad_complete(ifp->idev); if (send_rs) { /* * If a host as already performed a random delay * [...] as part of DAD [...] there is no need * to delay again before sending the first RS */ if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE)) return; ndisc_send_rs(dev, &lladdr, &in6addr_linklocal_allrouters); write_lock_bh(&ifp->idev->lock); spin_lock(&ifp->lock); ifp->idev->rs_interval = rfc3315_s14_backoff_init( ifp->idev->cnf.rtr_solicit_interval); ifp->idev->rs_probes = 1; ifp->idev->if_flags |= IF_RS_SENT; addrconf_mod_rs_timer(ifp->idev, ifp->idev->rs_interval); spin_unlock(&ifp->lock); write_unlock_bh(&ifp->idev->lock); } if (bump_id) rt_genid_bump_ipv6(dev_net(dev)); /* Make sure that a new temporary address will be created * before this temporary address becomes deprecated. */ if (ifp->flags & IFA_F_TEMPORARY) addrconf_verify_rtnl(); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa10941.76%526.32%
Linus Torvalds (pre-git)8934.10%736.84%
Maciej Żenczykowski197.28%15.26%
Paolo Abeni155.75%15.26%
Marcus Huewe124.60%15.26%
Ville Nuorvala93.45%15.26%
Tore Anderson41.53%15.26%
Shmulik Ladkani31.15%15.26%
Hideaki Yoshifuji / 吉藤英明10.38%15.26%
Total261100.00%19100.00%


static void addrconf_dad_run(struct inet6_dev *idev) { struct inet6_ifaddr *ifp; read_lock_bh(&idev->lock); list_for_each_entry(ifp, &idev->addr_list, if_list) { spin_lock(&ifp->lock); if (ifp->flags & IFA_F_TENTATIVE && ifp->state == INET6_IFADDR_STATE_DAD) addrconf_dad_kick(ifp); spin_unlock(&ifp->lock); } read_unlock_bh(&idev->lock); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明6077.92%125.00%
Stephen Hemminger1012.99%250.00%
Herbert Xu79.09%125.00%
Total77100.00%4100.00%

#ifdef CONFIG_PROC_FS struct if6_iter_state { struct seq_net_private p; int bucket; int offset; };
static struct inet6_ifaddr *if6_get_first(struct seq_file *seq, loff_t pos) { struct inet6_ifaddr *ifa = NULL; struct if6_iter_state *state = seq->private; struct net *net = seq_file_net(seq); int p = 0; /* initial bucket if pos is 0 */ if (pos == 0) { state->bucket = 0; state->offset = 0; } for (; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) { hlist_for_each_entry_rcu_bh(ifa, &inet6_addr_lst[state->bucket], addr_lst) { if (!net_eq(dev_net(ifa->idev->dev), net)) continue; /* sync with offset */ if (p < state->offset) { p++; continue; } state->offset++; return ifa; } /* prepare for next bucket */ state->offset = 0; p = 0; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Mihai Maruseac5939.60%19.09%
Hideaki Yoshifuji / 吉藤英明3825.50%327.27%
Eric Dumazet1912.75%218.18%
Linus Torvalds (pre-git)1510.07%327.27%
Stephen Hemminger117.38%19.09%
Daniel Lezcano74.70%19.09%
Total149100.00%11100.00%


static struct inet6_ifaddr *if6_get_next(struct seq_file *seq, struct inet6_ifaddr *ifa) { struct if6_iter_state *state = seq->private; struct net *net = seq_file_net(seq); hlist_for_each_entry_continue_rcu_bh(ifa, addr_lst) { if (!net_eq(dev_net(ifa->idev->dev), net)) continue; state->offset++; return ifa; } while (++state->bucket < IN6_ADDR_HSIZE) { state->offset = 0; hlist_for_each_entry_rcu_bh(ifa, &inet6_addr_lst[state->bucket], addr_lst) { if (!net_eq(dev_net(ifa->idev->dev), net)) continue; state->offset++; return ifa; } } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4938.58%541.67%
Stephen Hemminger3527.56%18.33%
Daniel Lezcano1713.39%18.33%
Eric Dumazet1612.60%216.67%
Mihai Maruseac86.30%18.33%
Linus Torvalds (pre-git)21.57%216.67%
Total127100.00%12100.00%


static void *if6_seq_start(struct seq_file *seq, loff_t *pos) __acquires (rcu_bh) { rcu_read_lock_bh(); return if6_get_first(seq, *pos); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2475.00%228.57%
Stephen Hemminger515.62%228.57%
Eric Dumazet13.12%114.29%
Mihai Maruseac13.12%114.29%
Linus Torvalds (pre-git)13.12%114.29%
Total32100.00%7100.00%


static void *if6_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct inet6_ifaddr *ifa; ifa = if6_get_next(seq, v); ++*pos; return ifa; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明41100.00%2100.00%
Total41100.00%2100.00%


static void if6_seq_stop(struct seq_file *seq, void *v) __releases (rcu_bh) { rcu_read_unlock_bh(); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明1672.73%240.00%
Stephen Hemminger522.73%240.00%
Eric Dumazet14.55%120.00%
Total22100.00%5100.00%


static int if6_seq_show(struct seq_file *seq, void *v) { struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v; seq_printf(seq, "%pi6 %02x %02x %02x %02x %8s\n", &ifp->addr, ifp->idev->dev->ifindex, ifp->prefix_len, ifp->scope, (u8) ifp->flags, ifp->idev->dev->name); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明6893.15%250.00%
Jiri Pirko45.48%125.00%
Harvey Harrison11.37%125.00%
Total73100.00%4100.00%

static const struct seq_operations if6_seq_ops = { .start = if6_seq_start, .next = if6_seq_next, .show = if6_seq_show, .stop = if6_seq_stop, };
static int if6_seq_open(struct inode *inode, struct file *file) { return seq_open_net(inode, file, &if6_seq_ops, sizeof(struct if6_iter_state)); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2369.70%133.33%
Pavel Emelyanov721.21%133.33%
Daniel Lezcano39.09%133.33%
Total33100.00%3100.00%

static const struct file_operations if6_fops = { .owner = THIS_MODULE, .open = if6_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, };
static int __net_init if6_proc_net_init(struct net *net) { if (!proc_create("if_inet6", S_IRUGO, net->proc_net, &if6_fops)) return -ENOMEM; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2158.33%233.33%
Daniel Lezcano616.67%116.67%
Gao Feng513.89%116.67%
Linus Torvalds (pre-git)38.33%116.67%
Alexey Dobriyan12.78%116.67%
Total36100.00%6100.00%


static void __net_exit if6_proc_net_exit(struct net *net) { remove_proc_entry("if_inet6", net->proc_net); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Lezcano1571.43%133.33%
Gao Feng523.81%133.33%
Alexey Dobriyan14.76%133.33%
Total21100.00%3100.00%

static struct pernet_operations if6_proc_net_ops = { .init = if6_proc_net_init, .exit = if6_proc_net_exit, };
int __init if6_proc_init(void) { return register_pernet_subsys(&if6_proc_net_ops); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Lezcano15100.00%1100.00%
Total15100.00%1100.00%


void if6_proc_exit(void) { unregister_pernet_subsys(&if6_proc_net_ops); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明1076.92%133.33%
Daniel Lezcano215.38%133.33%
Eric W. Biedermann17.69%133.33%
Total13100.00%3100.00%

#endif /* CONFIG_PROC_FS */ #if IS_ENABLED(CONFIG_IPV6_MIP6) /* Check if address is a home address configured on any interface. */
int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr) { int ret = 0; struct inet6_ifaddr *ifp = NULL; unsigned int hash = inet6_addr_hash(addr); rcu_read_lock_bh(); hlist_for_each_entry_rcu_bh(ifp, &inet6_addr_lst[hash], addr_lst) { if (!net_eq(dev_net(ifp->idev->dev), net)) continue; if (ipv6_addr_equal(&ifp->addr, addr) && (ifp->flags & IFA_F_HOMEADDRESS)) { ret = 1; break; } } rcu_read_unlock_bh(); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Noriaki Takamiya5857.43%19.09%
Stephen Hemminger1615.84%327.27%
Daniel Lezcano1514.85%19.09%
Hideaki Yoshifuji / 吉藤英明98.91%327.27%
Eric Dumazet32.97%327.27%
Total101100.00%11100.00%

#endif /* * Periodic address status verification */
static void addrconf_verify_rtnl(void) { unsigned long now, next, next_sec, next_sched; struct inet6_ifaddr *ifp; int i; ASSERT_RTNL(); rcu_read_lock_bh(); now = jiffies; next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY); cancel_delayed_work(&addr_chk_work); for (i = 0; i < IN6_ADDR_HSIZE; i++) { restart: hlist_for_each_entry_rcu_bh(ifp, &inet6_addr_lst[i], addr_lst) { unsigned long age; /* When setting preferred_lft to a value not zero or * infinity, while valid_lft is infinity * IFA_F_PERMANENT has a non-infinity life time. */ if ((ifp->flags & IFA_F_PERMANENT) && (ifp->prefered_lft == INFINITY_LIFE_TIME)) continue; spin_lock(&ifp->lock); /* We try to batch several events at once. */ age = (now - ifp->tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ; if (ifp->valid_lft != INFINITY_LIFE_TIME && age >= ifp->valid_lft) { spin_unlock(&ifp->lock); in6_ifa_hold(ifp); ipv6_del_addr(ifp); goto restart; } else if (ifp->prefered_lft == INFINITY_LIFE_TIME) { spin_unlock(&ifp->lock); continue; } else if (age >= ifp->prefered_lft) { /* jiffies - ifp->tstamp > age >= ifp->prefered_lft */ int deprecate = 0; if (!(ifp->flags&IFA_F_DEPRECATED)) { deprecate = 1; ifp->flags |= IFA_F_DEPRECATED; } if ((ifp->valid_lft != INFINITY_LIFE_TIME) && (time_before(ifp->tstamp + ifp->valid_lft * HZ, next))) next = ifp->tstamp + ifp->valid_lft * HZ; spin_unlock(&ifp->lock); if (deprecate) { in6_ifa_hold(ifp); ipv6_ifa_notify(0, ifp); in6_ifa_put(ifp); goto restart; } } else if ((ifp->flags&IFA_F_TEMPORARY) && !(ifp->flags&IFA_F_TENTATIVE)) { unsigned long regen_advance = ifp->idev->cnf.regen_max_retry * ifp->idev->cnf.dad_transmits * NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME) / HZ; if (age >= ifp->prefered_lft - regen_advance) { struct inet6_ifaddr *ifpub = ifp->ifpub; if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next)) next = ifp->tstamp + ifp->prefered_lft * HZ; if (!ifp->regen_count && ifpub) { ifp->regen_count++; in6_ifa_hold(ifp); in6_ifa_hold(ifpub); spin_unlock(&ifp->lock); spin_lock(&ifpub->lock); ifpub->regen_count = 0; spin_unlock(&ifpub->lock); ipv6_create_tempaddr(ifpub, ifp); in6_ifa_put(ifpub); in6_ifa_put(ifp); goto restart; } } else if (time_before(ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ, next)) next = ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ; spin_unlock(&ifp->lock); } else { /* ifp->prefered_lft <= ifp->valid_lft */ if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next)) next = ifp->tstamp + ifp->prefered_lft * HZ; spin_unlock(&ifp->lock); } } } next_sec = round_jiffies_up(next); next_sched = next; /* If rounded timeout is accurate enough, accept it. */ if (time_before(next_sec, next + ADDRCONF_TIMER_FUZZ)) next_sched = next_sec; /* And minimum interval is ADDRCONF_TIMER_FUZZ_MAX. */ if (time_before(next_sched, jiffies + ADDRCONF_TIMER_FUZZ_MAX)) next_sched = jiffies + ADDRCONF_TIMER_FUZZ_MAX; ADBG(KERN_DEBUG "now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n", now, next, next_sec, next_sched); mod_delayed_work(addrconf_wq, &addr_chk_work, next_sched - now); rcu_read_unlock_bh(); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明37358.56%421.05%
Linus Torvalds (pre-git)15324.02%421.05%
Stephen Hemminger375.81%315.79%
Hiroyuki YAMAMORI223.45%15.26%
Yasushi Asano213.30%15.26%
Hannes Frederic Sowa192.98%15.26%
Jiri Pirko50.78%15.26%
Ding Tianhong40.63%15.26%
Stephen Rothwell10.16%15.26%
Eric Dumazet10.16%15.26%
Brian Haley10.16%15.26%
Total637100.00%19100.00%


static void addrconf_verify_work(struct work_struct *w) { rtnl_lock(); addrconf_verify_rtnl(); rtnl_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa20100.00%1100.00%
Total20100.00%1100.00%


static void addrconf_verify(void) { mod_delayed_work(addrconf_wq, &addr_chk_work, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa1372.22%133.33%
Linus Torvalds (pre-git)316.67%133.33%
Hideaki Yoshifuji / 吉藤英明211.11%133.33%
Total18100.00%3100.00%


static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local, struct in6_addr **peer_pfx) { struct in6_addr *pfx = NULL; *peer_pfx = NULL; if (addr) pfx = nla_data(addr); if (local) { if (pfx && nla_memcmp(local, pfx, sizeof(*pfx))) *peer_pfx = pfx; pfx = nla_data(local); } return pfx; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf7183.53%150.00%
Nicolas Dichtel1416.47%150.00%
Total85100.00%2100.00%

static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = { [IFA_ADDRESS] = { .len = sizeof(struct in6_addr) }, [IFA_LOCAL] = { .len = sizeof(struct in6_addr) }, [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) }, [IFA_FLAGS] = { .len = sizeof(u32) }, };
static int inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifaddrmsg *ifm; struct nlattr *tb[IFA_MAX+1]; struct in6_addr *pfx, *peer_pfx; u32 ifa_flags; int err; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); if (err < 0) return err; ifm = nlmsg_data(nlh); pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx); if (!pfx) return -EINVAL; ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; /* We ignore other flags so far. */ ifa_flags &= IFA_F_MANAGETEMPADDR; return inet6_addr_del(net, ifm->ifa_index, ifa_flags, pfx, ifm->ifa_prefixlen); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)6942.86%433.33%
Thomas Graf3924.22%18.33%
Heiner Kallweit2918.01%18.33%
Denis V. Lunev95.59%18.33%
Hideaki Yoshifuji / 吉藤英明63.73%216.67%
Nicolas Dichtel63.73%18.33%
Daniel Lezcano21.24%18.33%
Ian Morris10.62%18.33%
Total161100.00%12100.00%


static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags, u32 prefered_lft, u32 valid_lft) { u32 flags; clock_t expires; unsigned long timeout; bool was_managetempaddr; bool had_prefixroute; ASSERT_RTNL(); if (!valid_lft || (prefered_lft > valid_lft)) return -EINVAL; if (ifa_flags & IFA_F_MANAGETEMPADDR && (ifp->flags & IFA_F_TEMPORARY || ifp->prefix_len != 64)) return -EINVAL; timeout = addrconf_timeout_fixup(valid_lft, HZ); if (addrconf_finite_timeout(timeout)) { expires = jiffies_to_clock_t(timeout * HZ); valid_lft = timeout; flags = RTF_EXPIRES; } else { expires = 0; flags = 0; ifa_flags |= IFA_F_PERMANENT; } timeout = addrconf_timeout_fixup(prefered_lft, HZ); if (addrconf_finite_timeout(timeout)) { if (timeout == 0) ifa_flags |= IFA_F_DEPRECATED; prefered_lft = timeout; } spin_lock_bh(&ifp->lock); was_managetempaddr = ifp->flags & IFA_F_MANAGETEMPADDR; had_prefixroute = ifp->flags & IFA_F_PERMANENT && !(ifp->flags & IFA_F_NOPREFIXROUTE); ifp->flags &= ~(IFA_F_DEPRECATED | IFA_F_PERMANENT | IFA_F_NODAD | IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE); ifp->flags |= ifa_flags; ifp->tstamp = jiffies; ifp->valid_lft = valid_lft; ifp->prefered_lft = prefered_lft; spin_unlock_bh(&ifp->lock); if (!(ifp->flags&IFA_F_TENTATIVE)) ipv6_ifa_notify(0, ifp); if (!(ifa_flags & IFA_F_NOPREFIXROUTE)) { addrconf_prefix_route(&ifp->addr, ifp->prefix_len, ifp->idev->dev, expires, flags); } else if (had_prefixroute) { enum cleanup_prefix_rt_t action; unsigned long rt_expires; write_lock_bh(&ifp->idev->lock); action = check_cleanup_prefix_route(ifp, &rt_expires); write_unlock_bh(&ifp->idev->lock); if (action != CLEANUP_PREFIX_RT_NOP) { cleanup_prefix_route(ifp, rt_expires, action == CLEANUP_PREFIX_RT_DEL); } } if (was_managetempaddr || ifp->flags & IFA_F_MANAGETEMPADDR) { if (was_managetempaddr && !(ifp->flags & IFA_F_MANAGETEMPADDR)) valid_lft = prefered_lft = 0; manage_tempaddrs(ifp->idev, ifp, valid_lft, prefered_lft, !was_managetempaddr, jiffies); } addrconf_verify_rtnl(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Noriaki Takamiya12028.99%323.08%
Thomas Haller9723.43%215.38%
Hideaki Yoshifuji / 吉藤英明9623.19%323.08%
Jiri Pirko9021.74%215.38%
Hannes Frederic Sowa51.21%17.69%
Thomas Graf40.97%17.69%
Linus Torvalds (pre-git)20.48%17.69%
Total414100.00%13100.00%


static int inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifaddrmsg *ifm; struct nlattr *tb[IFA_MAX+1]; struct in6_addr *pfx, *peer_pfx; struct inet6_ifaddr *ifa; struct net_device *dev; u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME; u32 ifa_flags; int err; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); if (err < 0) return err; ifm = nlmsg_data(nlh); pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx); if (!pfx) return -EINVAL; if (tb[IFA_CACHEINFO]) { struct ifa_cacheinfo *ci; ci = nla_data(tb[IFA_CACHEINFO]); valid_lft = ci->ifa_valid; preferred_lft = ci->ifa_prefered; } else { preferred_lft = INFINITY_LIFE_TIME; valid_lft = INFINITY_LIFE_TIME; } dev = __dev_get_by_index(net, ifm->ifa_index); if (!dev) return -ENODEV; ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; /* We ignore other flags so far. */ ifa_flags &= IFA_F_NODAD | IFA_F_HOMEADDRESS | IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE | IFA_F_MCAUTOJOIN; ifa = ipv6_get_ifaddr(net, pfx, dev, 1); if (!ifa) { /* * It would be best to check for !NLM_F_CREATE here but * userspace already relies on not having to provide this. */ return inet6_addr_add(net, ifm->ifa_index, pfx, peer_pfx, ifm->ifa_prefixlen, ifa_flags, preferred_lft, valid_lft); } if (nlh->nlmsg_flags & NLM_F_EXCL || !(nlh->nlmsg_flags & NLM_F_REPLACE)) err = -EEXIST; else err = inet6_addr_modify(ifa, ifa_flags, preferred_lft, valid_lft); in6_ifa_put(ifa); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf12939.57%29.09%
Noriaki Takamiya8425.77%418.18%
Linus Torvalds (pre-git)5617.18%313.64%
Jiri Pirko206.13%29.09%
Denis V. Lunev92.76%14.55%
Nicolas Dichtel82.45%14.55%
Hideaki Yoshifuji / 吉藤英明61.84%29.09%
Daniel Lezcano51.53%29.09%
Ian Morris30.92%14.55%
Thomas Haller20.61%14.55%
Madhu Challa20.61%14.55%
Stephen Hemminger10.31%14.55%
Eric W. Biedermann10.31%14.55%
Total326100.00%22100.00%


static void put_ifaddrmsg(struct nlmsghdr *nlh, u8 prefixlen, u32 flags, u8 scope, int ifindex) { struct ifaddrmsg *ifm; ifm = nlmsg_data(nlh); ifm->ifa_family = AF_INET6; ifm->ifa_prefixlen = prefixlen; ifm->ifa_flags = flags; ifm->ifa_scope = scope; ifm->ifa_index = ifindex; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf6498.46%150.00%
Jiri Pirko11.54%150.00%
Total65100.00%2100.00%


static int put_cacheinfo(struct sk_buff *skb, unsigned long cstamp, unsigned long tstamp, u32 preferred, u32 valid) { struct ifa_cacheinfo ci; ci.cstamp = cstamp_delta(cstamp); ci.tstamp = cstamp_delta(tstamp); ci.ifa_prefered = preferred; ci.ifa_valid = valid; return nla_put(skb, IFA_CACHEINFO, sizeof(ci), &ci); }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf75100.00%2100.00%
Total75100.00%2100.00%


static inline int rt_scope(int ifa_scope) { if (ifa_scope & IFA_HOST) return RT_SCOPE_HOST; else if (ifa_scope & IFA_LINK) return RT_SCOPE_LINK; else if (ifa_scope & IFA_SITE) return RT_SCOPE_SITE; else return RT_SCOPE_UNIVERSE; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf43100.00%1100.00%
Total43100.00%1100.00%


static inline int inet6_ifaddr_msgsize(void) { return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) + nla_total_size(16) /* IFA_LOCAL */ + nla_total_size(16) /* IFA_ADDRESS */ + nla_total_size(sizeof(struct ifa_cacheinfo)) + nla_total_size(4) /* IFA_FLAGS */; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf3473.91%250.00%
Nicolas Dichtel613.04%125.00%
Jiri Pirko613.04%125.00%
Total46100.00%4100.00%


static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa, u32 portid, u32 seq, int event, unsigned int flags) { struct nlmsghdr *nlh; u32 preferred, valid; nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags); if (!nlh) return -EMSGSIZE; put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope), ifa->idev->dev->ifindex); if (!((ifa->flags&IFA_F_PERMANENT) && (ifa->prefered_lft == INFINITY_LIFE_TIME))) { preferred = ifa->prefered_lft; valid = ifa->valid_lft; if (preferred != INFINITY_LIFE_TIME) { long tval = (jiffies - ifa->tstamp)/HZ; if (preferred > tval) preferred -= tval; else preferred = 0; if (valid != INFINITY_LIFE_TIME) { if (valid > tval) valid -= tval; else valid = 0; } } } else { preferred = INFINITY_LIFE_TIME; valid = INFINITY_LIFE_TIME; } if (!ipv6_addr_any(&ifa->peer_addr)) { if (nla_put_in6_addr(skb, IFA_LOCAL, &ifa->addr) < 0 || nla_put_in6_addr(skb, IFA_ADDRESS, &ifa->peer_addr) < 0) goto error; } else if (nla_put_in6_addr(skb, IFA_ADDRESS, &ifa->addr) < 0) goto error; if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0) goto error; if (nla_put_u32(skb, IFA_FLAGS, ifa->flags) < 0) goto error; nlmsg_end(skb, nlh); return 0; error: nlmsg_cancel(skb, nlh); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)12336.94%211.11%
Nicolas Dichtel6018.02%15.56%
Thomas Graf5817.42%316.67%
Shirley Ma226.61%15.56%
Jiri Pirko185.41%15.56%
Ben Hutchings133.90%15.56%
Jens Rosenboom113.30%15.56%
Yasushi Asano103.00%15.56%
Jamal Hadi Salim61.80%15.56%
Jiri Benc30.90%15.56%
Johannes Berg30.90%15.56%
Américo Wang20.60%15.56%
Eric W. Biedermann20.60%15.56%
Ian Morris10.30%15.56%
Patrick McHardy10.30%15.56%
Total333100.00%18100.00%


static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca, u32 portid, u32 seq, int event, u16 flags) { struct nlmsghdr *nlh; u8 scope = RT_SCOPE_UNIVERSE; int ifindex = ifmca->idev->dev->ifindex; if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE) scope = RT_SCOPE_SITE; nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags); if (!nlh) return -EMSGSIZE; put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex); if (nla_put_in6_addr(skb, IFA_MULTICAST, &ifmca->mca_addr) < 0 || put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) { nlmsg_cancel(skb, nlh); return -EMSGSIZE; } nlmsg_end(skb, nlh); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma8048.19%19.09%
Thomas Graf6740.36%327.27%
Patrick McHardy74.22%19.09%
Jamal Hadi Salim53.01%218.18%
Johannes Berg31.81%19.09%
Eric W. Biedermann21.20%19.09%
Ian Morris10.60%19.09%
Jiri Benc10.60%19.09%
Total166100.00%11100.00%


static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca, u32 portid, u32 seq, int event, unsigned int flags) { struct nlmsghdr *nlh; u8 scope = RT_SCOPE_UNIVERSE; int ifindex = ifaca->aca_idev->dev->ifindex; if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE) scope = RT_SCOPE_SITE; nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags); if (!nlh) return -EMSGSIZE; put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex); if (nla_put_in6_addr(skb, IFA_ANYCAST, &ifaca->aca_addr) < 0 || put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0) { nlmsg_cancel(skb, nlh); return -EMSGSIZE; } nlmsg_end(skb, nlh); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma8047.90%110.00%
Thomas Graf6740.12%330.00%
Patrick McHardy74.19%110.00%
Jamal Hadi Salim63.59%110.00%
Johannes Berg31.80%110.00%
Eric W. Biedermann21.20%110.00%
Ian Morris10.60%110.00%
Jiri Benc10.60%110.00%
Total167100.00%10100.00%

enum addr_type_t { UNICAST_ADDR, MULTICAST_ADDR, ANYCAST_ADDR, }; /* called with rcu_read_lock() */
static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb, struct netlink_callback *cb, enum addr_type_t type, int s_ip_idx, int *p_ip_idx) { struct ifmcaddr6 *ifmca; struct ifacaddr6 *ifaca; int err = 1; int ip_idx = *p_ip_idx; read_lock_bh(&idev->lock); switch (type) { case UNICAST_ADDR: { struct inet6_ifaddr *ifa; /* unicast address incl. temp addr */ list_for_each_entry(ifa, &idev->addr_list, if_list) { if (++ip_idx < s_ip_idx) continue; err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWADDR, NLM_F_MULTI); if (err < 0) break; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); } break; } case MULTICAST_ADDR: /* multicast address */ for (ifmca = idev->mc_list; ifmca; ifmca = ifmca->next, ip_idx++) { if (ip_idx < s_ip_idx) continue; err = inet6_fill_ifmcaddr(skb, ifmca, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_GETMULTICAST, NLM_F_MULTI); if (err < 0) break; } break; case ANYCAST_ADDR: /* anycast address */ for (ifaca = idev->ac_list; ifaca; ifaca = ifaca->aca_next, ip_idx++) { if (ip_idx < s_ip_idx) continue; err = inet6_fill_ifacaddr(skb, ifaca, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_GETANYCAST, NLM_F_MULTI); if (err < 0) break; } break; default: break; } read_unlock_bh(&idev->lock); *p_ip_idx = ip_idx; return err; }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma17358.45%215.38%
Linus Torvalds (pre-git)4113.85%215.38%
Eric Dumazet4013.51%215.38%
Stephen Hemminger165.41%17.69%
Nicolas Dichtel103.38%17.69%
Jamal Hadi Salim62.03%17.69%
Eric W. Biedermann31.01%17.69%
Johannes Berg31.01%17.69%
Hideaki Yoshifuji / 吉藤英明31.01%17.69%
Benjamin Thery10.34%17.69%
Total296100.00%13100.00%


static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb, enum addr_type_t type) { struct net *net = sock_net(skb->sk); int h, s_h; int idx, ip_idx; int s_idx, s_ip_idx; struct net_device *dev; struct inet6_dev *idev; struct hlist_head *head; s_h = cb->args[0]; s_idx = idx = cb->args[1]; s_ip_idx = ip_idx = cb->args[2]; rcu_read_lock(); cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq; for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { idx = 0; head = &net->dev_index_head[h]; hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; if (h > s_h || idx > s_idx) s_ip_idx = 0; ip_idx = 0; idev = __in6_dev_get(dev); if (!idev) goto cont; if (in6_dump_addrs(idev, skb, cb, type, s_ip_idx, &ip_idx) < 0) goto done; cont: idx++; } } done: rcu_read_unlock(); cb->args[0] = h; cb->args[1] = idx; cb->args[2] = ip_idx; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet18268.94%110.00%
Linus Torvalds (pre-git)259.47%220.00%
Shirley Ma259.47%220.00%
Nicolas Dichtel186.82%110.00%
Stephen Hemminger51.89%110.00%
Hideaki Yoshifuji / 吉藤英明41.52%110.00%
Patrick McHardy41.52%110.00%
David S. Miller10.38%110.00%
Total264100.00%10100.00%


static int inet6_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { enum addr_type_t type = UNICAST_ADDR; return inet6_dump_addr(skb, cb, type); }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma32100.00%1100.00%
Total32100.00%1100.00%


static int inet6_dump_ifmcaddr(struct sk_buff *skb, struct netlink_callback *cb) { enum addr_type_t type = MULTICAST_ADDR; return inet6_dump_addr(skb, cb, type); }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma32100.00%1100.00%
Total32100.00%1100.00%


static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb) { enum addr_type_t type = ANYCAST_ADDR; return inet6_dump_addr(skb, cb, type); }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma32100.00%1100.00%
Total32100.00%1100.00%


static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh) { struct net *net = sock_net(in_skb->sk); struct ifaddrmsg *ifm; struct nlattr *tb[IFA_MAX+1]; struct in6_addr *addr = NULL, *peer; struct net_device *dev = NULL; struct inet6_ifaddr *ifa; struct sk_buff *skb; int err; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); if (err < 0) goto errout; addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer); if (!addr) { err = -EINVAL; goto errout; } ifm = nlmsg_data(nlh); if (ifm->ifa_index) dev = __dev_get_by_index(net, ifm->ifa_index); ifa = ipv6_get_ifaddr(net, addr, dev, 1); if (!ifa) { err = -EADDRNOTAVAIL; goto errout; } skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL); if (!skb) { err = -ENOBUFS; goto errout_ifa; } err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWADDR, 0); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout_ifa; } err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); errout_ifa: in6_ifa_put(ifa); errout: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Noriaki Takamiya16757.99%16.67%
Thomas Graf6422.22%320.00%
Patrick McHardy206.94%16.67%
Denis V. Lunev103.47%213.33%
Stephen Hemminger103.47%16.67%
Nicolas Dichtel62.08%16.67%
Eric W. Biedermann31.04%213.33%
Hideaki Yoshifuji / 吉藤英明31.04%16.67%
Daniel Lezcano20.69%16.67%
Benjamin Thery20.69%16.67%
Ian Morris10.35%16.67%
Total288100.00%15100.00%


static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa) { struct sk_buff *skb; struct net *net = dev_net(ifa->idev->dev); int err = -ENOBUFS; /* Don't send DELADDR notification for TENTATIVE address, * since NEWADDR notification is sent only after removing * TENTATIVE flag. */ if (ifa->flags & IFA_F_TENTATIVE && event == RTM_DELADDR) return; skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC); if (!skb) goto errout; err = inet6_fill_ifaddr(skb, ifa, 0, 0, event, 0); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC); return; errout: if (err < 0) rtnl_set_sk_err(net, RTNLGRP_IPV6_IFADDR, err); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5839.73%215.38%
Thomas Graf3020.55%215.38%
Patrick McHardy2215.07%215.38%
Mahesh Bandewar149.59%17.69%
Benjamin Thery138.90%17.69%
Hideaki Yoshifuji / 吉藤英明32.05%17.69%
Denis V. Lunev21.37%17.69%
Jamal Hadi Salim21.37%17.69%
Pablo Neira Ayuso10.68%17.69%
Ian Morris10.68%17.69%
Total146100.00%13100.00%


static inline void ipv6_store_devconf(struct ipv6_devconf *cnf, __s32 *array, int bytes) { BUG_ON(bytes < (DEVCONF_MAX * 4)); memset(array, 0, bytes); array[DEVCONF_FORWARDING] = cnf->forwarding; array[DEVCONF_HOPLIMIT] = cnf->hop_limit; array[DEVCONF_MTU6] = cnf->mtu6; array[DEVCONF_ACCEPT_RA] = cnf->accept_ra; array[DEVCONF_ACCEPT_REDIRECTS] = cnf->accept_redirects; array[DEVCONF_AUTOCONF] = cnf->autoconf; array[DEVCONF_DAD_TRANSMITS] = cnf->dad_transmits; array[DEVCONF_RTR_SOLICITS] = cnf->rtr_solicits; array[DEVCONF_RTR_SOLICIT_INTERVAL] = jiffies_to_msecs(cnf->rtr_solicit_interval); array[DEVCONF_RTR_SOLICIT_MAX_INTERVAL] = jiffies_to_msecs(cnf->rtr_solicit_max_interval); array[DEVCONF_RTR_SOLICIT_DELAY] = jiffies_to_msecs(cnf->rtr_solicit_delay); array[DEVCONF_FORCE_MLD_VERSION] = cnf->force_mld_version; array[DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL] = jiffies_to_msecs(cnf->mldv1_unsolicited_report_interval); array[DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL] = jiffies_to_msecs(cnf->mldv2_unsolicited_report_interval); array[DEVCONF_USE_TEMPADDR] = cnf->use_tempaddr; array[DEVCONF_TEMP_VALID_LFT] = cnf->temp_valid_lft; array[DEVCONF_TEMP_PREFERED_LFT] = cnf->temp_prefered_lft; array[DEVCONF_REGEN_MAX_RETRY] = cnf->regen_max_retry; array[DEVCONF_MAX_DESYNC_FACTOR] = cnf->max_desync_factor; array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses; array[DEVCONF_ACCEPT_RA_DEFRTR] = cnf->accept_ra_defrtr; array[DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT] = cnf->accept_ra_min_hop_limit; array[DEVCONF_ACCEPT_RA_PINFO] = cnf->accept_ra_pinfo; #ifdef CONFIG_IPV6_ROUTER_PREF array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref; array[DEVCONF_RTR_PROBE_INTERVAL] = jiffies_to_msecs(cnf->rtr_probe_interval); #ifdef CONFIG_IPV6_ROUTE_INFO array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen; #endif #endif array[DEVCONF_PROXY_NDP] = cnf->proxy_ndp; array[DEVCONF_ACCEPT_SOURCE_ROUTE] = cnf->accept_source_route; #ifdef CONFIG_IPV6_OPTIMISTIC_DAD array[DEVCONF_OPTIMISTIC_DAD] = cnf->optimistic_dad; array[DEVCONF_USE_OPTIMISTIC] = cnf->use_optimistic; #endif #ifdef CONFIG_IPV6_MROUTE array[DEVCONF_MC_FORWARDING] = cnf->mc_forwarding; #endif array[DEVCONF_DISABLE_IPV6] = cnf->disable_ipv6; array[DEVCONF_ACCEPT_DAD] = cnf->accept_dad; array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao; array[DEVCONF_NDISC_NOTIFY] = cnf->ndisc_notify; array[DEVCONF_SUPPRESS_FRAG_NDISC] = cnf->suppress_frag_ndisc; array[DEVCONF_ACCEPT_RA_FROM_LOCAL] = cnf->accept_ra_from_local; array[DEVCONF_ACCEPT_RA_MTU] = cnf->accept_ra_mtu; array[DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN] = cnf->ignore_routes_with_linkdown; /* we omit DEVCONF_STABLE_SECRET for now */ array[DEVCONF_USE_OIF_ADDRS_ONLY] = cnf->use_oif_addrs_only; array[DEVCONF_DROP_UNICAST_IN_L2_MULTICAST] = cnf->drop_unicast_in_l2_multicast; array[DEVCONF_DROP_UNSOLICITED_NA] = cnf->drop_unsolicited_na; array[DEVCONF_KEEP_ADDR_ON_DOWN] = cnf->keep_addr_on_down; array[DEVCONF_SEG6_ENABLED] = cnf->seg6_enabled; #ifdef CONFIG_IPV6_SEG6_HMAC array[DEVCONF_SEG6_REQUIRE_HMAC] = cnf->seg6_require_hmac; #endif array[DEVCONF_ENHANCED_DAD] = cnf->enhanced_dad; array[DEVCONF_ADDR_GEN_MODE] = cnf->addr_gen_mode; }

Contributors

PersonTokensPropCommitsCommitProp
Krishna Kumar16232.02%12.70%
Hideaki Yoshifuji / 吉藤英明11322.33%1129.73%
Hannes Frederic Sowa438.50%410.81%
David Lebrun234.55%25.41%
Thomas Graf203.95%25.41%
Johannes Berg183.56%25.41%
Erik Kline183.56%25.41%
Neil Horman152.96%25.41%
Maciej Żenczykowski122.37%12.70%
Erik Nordmark91.78%12.70%
Ben Greear91.78%12.70%
Hangbin Liu91.78%12.70%
David Ahern91.78%12.70%
Andy Gospodarek91.78%12.70%
Cosmin Ratiu91.78%12.70%
Felix Jia91.78%12.70%
David L Stevens91.78%12.70%
Harout Hedeshian91.78%12.70%
Dave Jones10.20%12.70%
Total506100.00%37100.00%


static inline size_t inet6_ifla6_size(void) { return nla_total_size(4) /* IFLA_INET6_FLAGS */ + nla_total_size(sizeof(struct ifla_cacheinfo)) + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */ + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */ + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */ + nla_total_size(sizeof(struct in6_addr)); /* IFLA_INET6_TOKEN */ }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf4881.36%266.67%
Daniel Borkmann1118.64%133.33%
Total59100.00%3100.00%


static inline size_t inet6_if_nlmsg_size(void) { return NLMSG_ALIGN(sizeof(struct ifinfomsg)) + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ + nla_total_size(4) /* IFLA_MTU */ + nla_total_size(4) /* IFLA_LINK */ + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(inet6_ifla6_size()); /* IFLA_PROTINFO */ }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf4376.79%250.00%
Hideaki Yoshifuji / 吉藤英明712.50%125.00%
Andy Gospodarek610.71%125.00%
Total56100.00%4100.00%


static inline void __snmp6_fill_statsdev(u64 *stats, atomic_long_t *mib, int bytes) { int i; int pad = bytes - sizeof(u64) * ICMP6_MIB_MAX; BUG_ON(pad < 0); /* Use put_unaligned() because stats may not be aligned for u64. */ put_unaligned(ICMP6_MIB_MAX, &stats[0]); for (i = 1; i < ICMP6_MIB_MAX; i++) put_unaligned(atomic_long_read(&mib[i]), &stats[i]); memset(&stats[ICMP6_MIB_MAX], 0, pad); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu8689.58%133.33%
Eric Dumazet66.25%133.33%
Jia He44.17%133.33%
Total96100.00%3100.00%


static inline void __snmp6_fill_stats64(u64 *stats, void __percpu *mib, int bytes, size_t syncpoff) { int i, c; u64 buff[IPSTATS_MIB_MAX]; int pad = bytes - sizeof(u64) * IPSTATS_MIB_MAX; BUG_ON(pad < 0); memset(buff, 0, sizeof(buff)); buff[0] = IPSTATS_MIB_MAX; for_each_possible_cpu(c) { for (i = 1; i < IPSTATS_MIB_MAX; i++) buff[i] += snmp_get_cpu_field64(mib, c, i, syncpoff); } memcpy(stats, buff, IPSTATS_MIB_MAX * sizeof(u64)); memset(&stats[IPSTATS_MIB_MAX], 0, pad); }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet8362.41%150.00%
Raghavendra K T5037.59%150.00%
Total133100.00%2100.00%


static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype, int bytes) { switch (attrtype) { case IFLA_INET6_STATS: __snmp6_fill_stats64(stats, idev->stats.ipv6, bytes, offsetof(struct ipstats_mib, syncp)); break; case IFLA_INET6_ICMP6STATS: __snmp6_fill_statsdev(stats, idev->stats.icmpv6dev->mibs, bytes); break; } }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu5881.69%133.33%
Eric Dumazet1318.31%266.67%
Total71100.00%3100.00%


static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev, u32 ext_filter_mask) { struct nlattr *nla; struct ifla_cacheinfo ci; if (nla_put_u32(skb, IFLA_INET6_FLAGS, idev->if_flags)) goto nla_put_failure; ci.max_reasm_len = IPV6_MAXPLEN; ci.tstamp = cstamp_delta(idev->tstamp); ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time); ci.retrans_time = jiffies_to_msecs(NEIGH_VAR(idev->nd_parms, RETRANS_TIME)); if (nla_put(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci)) goto nla_put_failure; nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32)); if (!nla) goto nla_put_failure; ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla)); /* XXX - MC not implemented */ if (ext_filter_mask & RTEXT_FILTER_SKIP_STATS) return 0; nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64)); if (!nla) goto nla_put_failure; snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla)); nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64)); if (!nla) goto nla_put_failure; snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla)); nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr)); if (!nla) goto nla_put_failure; if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->cnf.addr_gen_mode)) goto nla_put_failure; read_lock_bh(&idev->lock); memcpy(nla_data(nla), idev->token.s6_addr, nla_len(nla)); read_unlock_bh(&idev->lock); return 0; nla_put_failure: return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf21364.74%218.18%
Daniel Borkmann5717.33%19.09%
Jiri Pirko216.38%218.18%
David S. Miller185.47%218.18%
Sowmini Varadhan123.65%19.09%
Ian Morris41.22%19.09%
Felix Jia20.61%19.09%
Krishna Kumar20.61%19.09%
Total329100.00%11100.00%


static size_t inet6_get_link_af_size(const struct net_device *dev, u32 ext_filter_mask) { if (!__in6_dev_get(dev)) return 0; return inet6_ifla6_size(); }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf2790.00%150.00%
Arad, Ronen310.00%150.00%
Total30100.00%2100.00%


static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev, u32 ext_filter_mask) { struct inet6_dev *idev = __in6_dev_get(dev); if (!idev) return -ENODATA; if (inet6_fill_ifla6_attrs(skb, idev, ext_filter_mask) < 0) return -EMSGSIZE; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf5491.53%150.00%
Sowmini Varadhan58.47%150.00%
Total59100.00%2100.00%


static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) { struct inet6_ifaddr *ifp; struct net_device *dev = idev->dev; bool clear_token, update_rs = false; struct in6_addr ll_addr; ASSERT_RTNL(); if (!token) return -EINVAL; if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) return -EINVAL; if (!ipv6_accept_ra(idev)) return -EINVAL; if (idev->cnf.rtr_solicits == 0) return -EINVAL; write_lock_bh(&idev->lock); BUILD_BUG_ON(sizeof(token->s6_addr) != 16); memcpy(idev->token.s6_addr + 8, token->s6_addr + 8, 8); write_unlock_bh(&idev->lock); clear_token = ipv6_addr_any(token); if (clear_token) goto update_lft; if (!idev->dead && (idev->if_flags & IF_READY) && !ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE | IFA_F_OPTIMISTIC)) { /* If we're not ready, then normal ifup will take care * of this. Otherwise, we need to request our rs here. */ ndisc_send_rs(dev, &ll_addr, &in6addr_linklocal_allrouters); update_rs = true; } update_lft: write_lock_bh(&idev->lock); if (update_rs) { idev->if_flags |= IF_RS_SENT; idev->rs_interval = rfc3315_s14_backoff_init( idev->cnf.rtr_solicit_interval); idev->rs_probes = 1; addrconf_mod_rs_timer(idev, idev->rs_interval); } /* Well, that's kinda nasty ... */ list_for_each_entry(ifp, &idev->addr_list, if_list) { spin_lock(&ifp->lock); if (ifp->tokenized) { ifp->valid_lft = 0; ifp->prefered_lft = 0; } spin_unlock(&ifp->lock); } write_unlock_bh(&idev->lock); inet6_ifinfo_notify(RTM_NEWLINK, idev); addrconf_verify_rtnl(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Borkmann26783.44%436.36%
Hannes Frederic Sowa309.38%436.36%
Maciej Żenczykowski154.69%19.09%
Lubomir Rintel72.19%19.09%
Ian Morris10.31%19.09%
Total320100.00%11100.00%

static const struct nla_policy inet6_af_policy[IFLA_INET6_MAX + 1] = { [IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 }, [IFLA_INET6_TOKEN] = { .len = sizeof(struct in6_addr) }, };
static int inet6_validate_link_af(const struct net_device *dev, const struct nlattr *nla) { struct nlattr *tb[IFLA_INET6_MAX + 1]; if (dev && !__in6_dev_get(dev)) return -EAFNOSUPPORT; return nla_parse_nested(tb, IFLA_INET6_MAX, nla, inet6_af_policy); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Borkmann54100.00%1100.00%
Total54100.00%1100.00%


static int check_addr_gen_mode(int mode) { if (mode != IN6_ADDR_GEN_MODE_EUI64 && mode != IN6_ADDR_GEN_MODE_NONE && mode != IN6_ADDR_GEN_MODE_STABLE_PRIVACY && mode != IN6_ADDR_GEN_MODE_RANDOM) return -EINVAL; return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Felix Jia34100.00%1100.00%
Total34100.00%1100.00%


static int check_stable_privacy(struct inet6_dev *idev, struct net *net, int mode) { if (mode == IN6_ADDR_GEN_MODE_STABLE_PRIVACY && !idev->cnf.stable_secret.initialized && !net->ipv6.devconf_dflt->stable_secret.initialized) return -EINVAL; return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Felix Jia52100.00%1100.00%
Total52100.00%1100.00%


static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla) { int err = -EINVAL; struct inet6_dev *idev = __in6_dev_get(dev); struct nlattr *tb[IFLA_INET6_MAX + 1]; if (!idev) return -EAFNOSUPPORT; if (nla_parse_nested(tb, IFLA_INET6_MAX, nla, NULL) < 0) BUG(); if (tb[IFLA_INET6_TOKEN]) { err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN])); if (err) return err; } if (tb[IFLA_INET6_ADDR_GEN_MODE]) { u8 mode = nla_get_u8(tb[IFLA_INET6_ADDR_GEN_MODE]); if (check_addr_gen_mode(mode) < 0 || check_stable_privacy(idev, dev_net(dev), mode) < 0) return -EINVAL; idev->cnf.addr_gen_mode = mode; err = 0; } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Borkmann9558.28%125.00%
Jiri Pirko4728.83%125.00%
Felix Jia169.82%125.00%
Hannes Frederic Sowa53.07%125.00%
Total163100.00%4100.00%


static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, u32 portid, u32 seq, int event, unsigned int flags) { struct net_device *dev = idev->dev; struct ifinfomsg *hdr; struct nlmsghdr *nlh; void *protoinfo; nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags); if (!nlh) return -EMSGSIZE; hdr = nlmsg_data(nlh); hdr->ifi_family = AF_INET6; hdr->__ifi_pad = 0; hdr->ifi_type = dev->type; hdr->ifi_index = dev->ifindex; hdr->ifi_flags = dev_get_flags(dev); hdr->ifi_change = 0; if (nla_put_string(skb, IFLA_IFNAME, dev->name) || (dev->addr_len && nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || nla_put_u32(skb, IFLA_MTU, dev->mtu) || (dev->ifindex != dev_get_iflink(dev) && nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) || nla_put_u8(skb, IFLA_OPERSTATE, netif_running(dev) ? dev->operstate : IF_OPER_DOWN)) goto nla_put_failure; protoinfo = nla_nest_start(skb, IFLA_PROTINFO); if (!protoinfo) goto nla_put_failure; if (inet6_fill_ifla6_attrs(skb, idev, 0) < 0) goto nla_put_failure; nla_nest_end(skb, protoinfo); nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Krishna Kumar10838.03%16.25%
Thomas Graf5218.31%318.75%
Shirley Ma4716.55%16.25%
David S. Miller196.69%16.25%
Andy Gospodarek186.34%16.25%
Patrick McHardy103.52%212.50%
Hideaki Yoshifuji / 吉藤英明93.17%16.25%
Nicolas Dichtel62.11%16.25%
Jamal Hadi Salim62.11%16.25%
Johannes Berg31.06%16.25%
Ian Morris20.70%16.25%
Sowmini Varadhan20.70%16.25%
Eric W. Biedermann20.70%16.25%
Total284100.00%16100.00%


static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); int h, s_h; int idx = 0, s_idx; struct net_device *dev; struct inet6_dev *idev; struct hlist_head *head; s_h = cb->args[0]; s_idx = cb->args[1]; rcu_read_lock(); for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { idx = 0; head = &net->dev_index_head[h]; hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; idev = __in6_dev_get(dev); if (!idev) goto cont; if (inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWLINK, NLM_F_MULTI) < 0) goto out; cont: idx++; } } out: rcu_read_unlock(); cb->args[1] = idx; cb->args[0] = h; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Eric Dumazet8842.11%111.11%
Krishna Kumar8842.11%111.11%
Pavel Emelyanov157.18%111.11%
Denis V. Lunev94.31%111.11%
Hideaki Yoshifuji / 吉藤英明31.44%111.11%
Jamal Hadi Salim20.96%111.11%
Shirley Ma20.96%111.11%
Johannes Berg10.48%111.11%
Eric W. Biedermann10.48%111.11%
Total209100.00%9100.00%


void inet6_ifinfo_notify(int event, struct inet6_dev *idev) { struct sk_buff *skb; struct net *net = dev_net(idev->dev); int err = -ENOBUFS; skb = nlmsg_new(inet6_if_nlmsg_size(), GFP_ATOMIC); if (!skb) goto errout; err = inet6_fill_ifinfo(skb, idev, 0, 0, event, 0); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_if_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFINFO, NULL, GFP_ATOMIC); return; errout: if (err < 0) rtnl_set_sk_err(net, RTNLGRP_IPV6_IFINFO, err); }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma5542.64%19.09%
Thomas Graf3224.81%218.18%
Patrick McHardy2015.50%19.09%
Benjamin Thery118.53%19.09%
Hideaki Yoshifuji / 吉藤英明32.33%19.09%
Nicolas Dichtel21.55%19.09%
Jamal Hadi Salim21.55%19.09%
Denis V. Lunev21.55%19.09%
Ian Morris10.78%19.09%
Pablo Neira Ayuso10.78%19.09%
Total129100.00%11100.00%


static inline size_t inet6_prefix_nlmsg_size(void) { return NLMSG_ALIGN(sizeof(struct prefixmsg)) + nla_total_size(sizeof(struct in6_addr)) + nla_total_size(sizeof(struct prefix_cacheinfo)); }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf37100.00%1100.00%
Total37100.00%1100.00%


static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev, struct prefix_info *pinfo, u32 portid, u32 seq, int event, unsigned int flags) { struct prefixmsg *pmsg; struct nlmsghdr *nlh; struct prefix_cacheinfo ci; nlh = nlmsg_put(skb, portid, seq, event, sizeof(*pmsg), flags); if (!nlh) return -EMSGSIZE; pmsg = nlmsg_data(nlh); pmsg->prefix_family = AF_INET6; pmsg->prefix_pad1 = 0; pmsg->prefix_pad2 = 0; pmsg->prefix_ifindex = idev->dev->ifindex; pmsg->prefix_len = pinfo->prefix_len; pmsg->prefix_type = pinfo->type; pmsg->prefix_pad3 = 0; pmsg->prefix_flags = 0; if (pinfo->onlink) pmsg->prefix_flags |= IF_PREFIX_ONLINK; if (pinfo->autoconf) pmsg->prefix_flags |= IF_PREFIX_AUTOCONF; if (nla_put(skb, PREFIX_ADDRESS, sizeof(pinfo->prefix), &pinfo->prefix)) goto nla_put_failure; ci.preferred_time = ntohl(pinfo->prefered); ci.valid_time = ntohl(pinfo->valid); if (nla_put(skb, PREFIX_CACHEINFO, sizeof(ci), &ci)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma18874.02%111.11%
Patrick McHardy239.06%222.22%
Thomas Graf176.69%111.11%
David S. Miller145.51%111.11%
Jamal Hadi Salim62.36%111.11%
Johannes Berg31.18%111.11%
Eric W. Biedermann20.79%111.11%
Ian Morris10.39%111.11%
Total254100.00%9100.00%


static void inet6_prefix_notify(int event, struct inet6_dev *idev, struct prefix_info *pinfo) { struct sk_buff *skb; struct net *net = dev_net(idev->dev); int err = -ENOBUFS; skb = nlmsg_new(inet6_prefix_nlmsg_size(), GFP_ATOMIC); if (!skb) goto errout; err = inet6_fill_prefix(skb, idev, pinfo, 0, 0, event, 0); if (err < 0) { /* -EMSGSIZE implies BUG in inet6_prefix_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC); return; errout: if (err < 0) rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err); }

Contributors

PersonTokensPropCommitsCommitProp
Shirley Ma6547.45%19.09%
Thomas Graf3021.90%218.18%
Patrick McHardy2216.06%218.18%
Benjamin Thery118.03%19.09%
Hideaki Yoshifuji / 吉藤英明32.19%19.09%
Jamal Hadi Salim21.46%19.09%
Denis V. Lunev21.46%19.09%
Ian Morris10.73%19.09%
Pablo Neira Ayuso10.73%19.09%
Total137100.00%11100.00%


static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) { struct net *net = dev_net(ifp->idev->dev); if (event) ASSERT_RTNL(); inet6_ifa_notify(event ? : RTM_NEWADDR, ifp); switch (event) { case RTM_NEWADDR: /* * If the address was optimistic * we inserted the route at the start of * our DAD process, so we don't need * to do it again */ if (!(ifp->rt->rt6i_node)) ip6_ins_rt(ifp->rt); if (ifp->idev->cnf.forwarding) addrconf_join_anycast(ifp); if (!ipv6_addr_any(&ifp->peer_addr)) addrconf_prefix_route(&ifp->peer_addr, 128, ifp->idev->dev, 0, 0); break; case RTM_DELADDR: if (ifp->idev->cnf.forwarding) addrconf_leave_anycast(ifp); addrconf_leave_solict(ifp->idev, &ifp->addr); if (!ipv6_addr_any(&ifp->peer_addr)) { struct rt6_info *rt; rt = addrconf_get_prefix_route(&ifp->peer_addr, 128, ifp->idev->dev, 0, 0); if (rt) ip6_del_rt(rt); } if (ifp->rt) { dst_hold(&ifp->rt->dst); ip6_del_rt(ifp->rt); } rt_genid_bump_ipv6(net); break; } atomic_inc(&net->ipv6.dev_addr_genid); }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel9941.25%318.75%
Linus Torvalds (pre-git)4719.58%212.50%
Hideaki Yoshifuji / 吉藤英明3414.17%318.75%
David L Stevens218.75%16.25%
Neil Horman125.00%16.25%
Hannes Frederic Sowa125.00%212.50%
David Ahern83.33%16.25%
Américo Wang41.67%16.25%
Ville Nuorvala20.83%16.25%
Martin KaFai Lau10.42%16.25%
Total240100.00%16100.00%


static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) { rcu_read_lock_bh(); if (likely(ifp->idev->dead == 0)) __ipv6_ifa_notify(event, ifp); rcu_read_unlock_bh(); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3587.50%266.67%
Brian Haley512.50%133.33%
Total40100.00%3100.00%

#ifdef CONFIG_SYSCTL
static int addrconf_sysctl_forward(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; loff_t pos = *ppos; struct ctl_table lctl; int ret; /* * ctl->data points to idev->cnf.forwarding, we should * not modify it until we get the rtnl lock. */ lctl = *ctl; lctl.data = &val; ret = proc_dointvec(&lctl, write, buffer, lenp, ppos); if (write) ret = addrconf_fixup_forwarding(ctl, valp, val); if (ret) *ppos = pos; return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5751.82%220.00%
Francesco Ruggeri1816.36%110.00%
Eric W. Biedermann1513.64%110.00%
Linus Torvalds65.45%110.00%
Pavel Emelyanov54.55%110.00%
Hideaki Yoshifuji / 吉藤英明43.64%110.00%
Joe Perches21.82%110.00%
Stephen Hemminger21.82%110.00%
Al Viro10.91%110.00%
Total110100.00%10100.00%


static int addrconf_sysctl_mtu(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct inet6_dev *idev = ctl->extra1; int min_mtu = IPV6_MIN_MTU; struct ctl_table lctl; lctl = *ctl; lctl.extra1 = &min_mtu; lctl.extra2 = idev ? &idev->dev->mtu : NULL; return proc_dointvec_minmax(&lctl, write, buffer, lenp, ppos); }

Contributors

PersonTokensPropCommitsCommitProp
Marcelo Ricardo Leitner87100.00%1100.00%
Total87100.00%1100.00%


static void dev_disable_change(struct inet6_dev *idev) { struct netdev_notifier_info info; if (!idev || !idev->dev) return; netdev_notifier_info_init(&info, idev->dev); if (idev->cnf.disable_ipv6) addrconf_notify(NULL, NETDEV_DOWN, &info); else addrconf_notify(NULL, NETDEV_UP, &info); }

Contributors

PersonTokensPropCommitsCommitProp
Brian Haley4772.31%150.00%
Américo Wang1827.69%150.00%
Total65100.00%2100.00%


static void addrconf_disable_change(struct net *net, __s32 newf) { struct net_device *dev; struct inet6_dev *idev; for_each_netdev(net, dev) { idev = __in6_dev_get(dev); if (idev) { int changed = (!idev->cnf.disable_ipv6) ^ (!newf); idev->cnf.disable_ipv6 = newf; if (changed) dev_disable_change(idev); } } }

Contributors

PersonTokensPropCommitsCommitProp
Brian Haley7797.47%133.33%
Kefeng Wang11.27%133.33%
Eric Dumazet11.27%133.33%
Total79100.00%3100.00%


static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf) { struct net *net; int old; if (!rtnl_trylock()) return restart_syscall(); net = (struct net *)table->extra2; old = *p; *p = newf; if (p == &net->ipv6.devconf_dflt->disable_ipv6) { rtnl_unlock(); return 0; } if (p == &net->ipv6.devconf_all->disable_ipv6) { net->ipv6.devconf_dflt->disable_ipv6 = newf; addrconf_disable_change(net, newf); } else if ((!newf) ^ (!old)) dev_disable_change((struct inet6_dev *)table->extra1); rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Brian Haley11078.01%133.33%
Francesco Ruggeri2819.86%133.33%
Eric W. Biedermann32.13%133.33%
Total141100.00%3100.00%


static int addrconf_sysctl_disable(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; loff_t pos = *ppos; struct ctl_table lctl; int ret; /* * ctl->data points to idev->cnf.disable_ipv6, we should * not modify it until we get the rtnl lock. */ lctl = *ctl; lctl.data = &val; ret = proc_dointvec(&lctl, write, buffer, lenp, ppos); if (write) ret = addrconf_disable_ipv6(ctl, valp, val); if (ret) *ppos = pos; return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Brian Haley7568.18%125.00%
Francesco Ruggeri1816.36%125.00%
Eric W. Biedermann1513.64%125.00%
Joe Perches21.82%125.00%
Total110100.00%4100.00%


static int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int ret; int old, new; old = *valp; ret = proc_dointvec(ctl, write, buffer, lenp, ppos); new = *valp; if (write && old != new) { struct net *net = ctl->extra2; if (!rtnl_trylock()) return restart_syscall(); if (valp == &net->ipv6.devconf_dflt->proxy_ndp) inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, NETCONFA_IFINDEX_DEFAULT, net->ipv6.devconf_dflt); else if (valp == &net->ipv6.devconf_all->proxy_ndp) inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, NETCONFA_IFINDEX_ALL, net->ipv6.devconf_all); else { struct inet6_dev *idev = ctl->extra1; inet6_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, idev->dev->ifindex, &idev->cnf); } rtnl_unlock(); } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Hemminger190100.00%1100.00%
Total190100.00%1100.00%


static int addrconf_sysctl_addr_gen_mode(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int ret = 0; int new_val; struct inet6_dev *idev = (struct inet6_dev *)ctl->extra1; struct net *net = (struct net *)ctl->extra2; if (!rtnl_trylock()) return restart_syscall(); ret = proc_dointvec(ctl, write, buffer, lenp, ppos); if (write) { new_val = *((int *)ctl->data); if (check_addr_gen_mode(new_val) < 0) { ret = -EINVAL; goto out; } /* request for default */ if (&net->ipv6.devconf_dflt->addr_gen_mode == ctl->data) { ipv6_devconf_dflt.addr_gen_mode = new_val; /* request for individual net device */ } else { if (!idev) goto out; if (check_stable_privacy(idev, net, new_val) < 0) { ret = -EINVAL; goto out; } if (idev->cnf.addr_gen_mode != new_val) { idev->cnf.addr_gen_mode = new_val; addrconf_dev_config(idev->dev); } } } out: rtnl_unlock(); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Felix Jia220100.00%2100.00%
Total220100.00%2100.00%


static int addrconf_sysctl_stable_secret(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int err; struct in6_addr addr; char str[IPV6_MAX_STRLEN]; struct ctl_table lctl = *ctl; struct net *net = ctl->extra2; struct ipv6_stable_secret *secret = ctl->data; if (&net->ipv6.devconf_all->stable_secret == ctl->data) return -EIO; lctl.maxlen = IPV6_MAX_STRLEN; lctl.data = str; if (!rtnl_trylock()) return restart_syscall(); if (!write && !secret->initialized) { err = -EIO; goto out; } err = snprintf(str, sizeof(str), "%pI6", &secret->secret); if (err >= sizeof(str)) { err = -EIO; goto out; } err = proc_dostring(&lctl, write, buffer, lenp, ppos); if (err || !write) goto out; if (in6_pton(str, -1, addr.in6_u.u6_addr8, -1, NULL) != 1) { err = -EIO; goto out; } secret->initialized = true; secret->secret = addr; if (&net->ipv6.devconf_dflt->stable_secret == ctl->data) { struct net_device *dev; for_each_netdev(net, dev) { struct inet6_dev *idev = __in6_dev_get(dev); if (idev) { idev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; } } } else { struct inet6_dev *idev = ctl->extra1; idev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; } out: rtnl_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hannes Frederic Sowa31398.74%266.67%
Felix Jia41.26%133.33%
Total317100.00%3100.00%


static int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; loff_t pos = *ppos; struct ctl_table lctl; int ret; /* ctl->data points to idev->cnf.ignore_routes_when_linkdown * we should not modify it until we get the rtnl lock. */ lctl = *ctl; lctl.data = &val; ret = proc_dointvec(&lctl, write, buffer, lenp, ppos); if (write) ret = addrconf_fixup_linkdown(ctl, valp, val); if (ret) *ppos = pos; return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Andy Gospodarek110100.00%1100.00%
Total110100.00%1100.00%

static int minus_one = -1; static const int one = 1; static const int two_five_five = 255; static const struct ctl_table addrconf_sysctl[] = { { .procname = "forwarding", .data = &ipv6_devconf.forwarding, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_forward, }, { .procname = "hop_limit", .data = &ipv6_devconf.hop_limit, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)&one, .extra2 = (void *)&two_five_five, }, { .procname = "mtu", .data = &ipv6_devconf.mtu6, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_mtu, }, { .procname = "accept_ra", .data = &ipv6_devconf.accept_ra, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "accept_redirects", .data = &ipv6_devconf.accept_redirects, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "autoconf", .data = &ipv6_devconf.autoconf, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "dad_transmits", .data = &ipv6_devconf.dad_transmits, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "router_solicitations", .data = &ipv6_devconf.rtr_solicits, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &minus_one, }, { .procname = "router_solicitation_interval", .data = &ipv6_devconf.rtr_solicit_interval, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "router_solicitation_max_interval", .data = &ipv6_devconf.rtr_solicit_max_interval, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "router_solicitation_delay", .data = &ipv6_devconf.rtr_solicit_delay, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "force_mld_version", .data = &ipv6_devconf.force_mld_version, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "mldv1_unsolicited_report_interval", .data = &ipv6_devconf.mldv1_unsolicited_report_interval, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_ms_jiffies, }, { .procname = "mldv2_unsolicited_report_interval", .data = &ipv6_devconf.mldv2_unsolicited_report_interval, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_ms_jiffies, }, { .procname = "use_tempaddr", .data = &ipv6_devconf.use_tempaddr, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "temp_valid_lft", .data = &ipv6_devconf.temp_valid_lft, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "temp_prefered_lft", .data = &ipv6_devconf.temp_prefered_lft, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "regen_max_retry", .data = &ipv6_devconf.regen_max_retry, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "max_desync_factor", .data = &ipv6_devconf.max_desync_factor, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "max_addresses", .data = &ipv6_devconf.max_addresses, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "accept_ra_defrtr", .data = &ipv6_devconf.accept_ra_defrtr, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "accept_ra_min_hop_limit", .data = &ipv6_devconf.accept_ra_min_hop_limit, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "accept_ra_pinfo", .data = &ipv6_devconf.accept_ra_pinfo, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #ifdef CONFIG_IPV6_ROUTER_PREF { .procname = "accept_ra_rtr_pref", .data = &ipv6_devconf.accept_ra_rtr_pref, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "router_probe_interval", .data = &ipv6_devconf.rtr_probe_interval, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, #ifdef CONFIG_IPV6_ROUTE_INFO { .procname = "accept_ra_rt_info_max_plen", .data = &ipv6_devconf.accept_ra_rt_info_max_plen, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #endif #endif { .procname = "proxy_ndp", .data = &ipv6_devconf.proxy_ndp, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_proxy_ndp, }, { .procname = "accept_source_route", .data = &ipv6_devconf.accept_source_route, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #ifdef CONFIG_IPV6_OPTIMISTIC_DAD { .procname = "optimistic_dad", .data = &ipv6_devconf.optimistic_dad, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "use_optimistic", .data = &ipv6_devconf.use_optimistic, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #endif #ifdef CONFIG_IPV6_MROUTE { .procname = "mc_forwarding", .data = &ipv6_devconf.mc_forwarding, .maxlen = sizeof(int), .mode = 0444, .proc_handler = proc_dointvec, }, #endif { .procname = "disable_ipv6", .data = &ipv6_devconf.disable_ipv6, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_disable, }, { .procname = "accept_dad", .data = &ipv6_devconf.accept_dad, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "force_tllao", .data = &ipv6_devconf.force_tllao, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec }, { .procname = "ndisc_notify", .data = &ipv6_devconf.ndisc_notify, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec }, { .procname = "suppress_frag_ndisc", .data = &ipv6_devconf.suppress_frag_ndisc, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec }, { .procname = "accept_ra_from_local", .data = &ipv6_devconf.accept_ra_from_local, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "accept_ra_mtu", .data = &ipv6_devconf.accept_ra_mtu, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "stable_secret", .data = &ipv6_devconf.stable_secret, .maxlen = IPV6_MAX_STRLEN, .mode = 0600, .proc_handler = addrconf_sysctl_stable_secret, }, { .procname = "use_oif_addrs_only", .data = &ipv6_devconf.use_oif_addrs_only, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "ignore_routes_with_linkdown", .data = &ipv6_devconf.ignore_routes_with_linkdown, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_ignore_routes_with_linkdown, }, { .procname = "drop_unicast_in_l2_multicast", .data = &ipv6_devconf.drop_unicast_in_l2_multicast, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "drop_unsolicited_na", .data = &ipv6_devconf.drop_unsolicited_na, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "keep_addr_on_down", .data = &ipv6_devconf.keep_addr_on_down, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "seg6_enabled", .data = &ipv6_devconf.seg6_enabled, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #ifdef CONFIG_IPV6_SEG6_HMAC { .procname = "seg6_require_hmac", .data = &ipv6_devconf.seg6_require_hmac, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #endif { .procname = "enhanced_dad", .data = &ipv6_devconf.enhanced_dad, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "addr_gen_mode", .data = &ipv6_devconf.addr_gen_mode, .maxlen = sizeof(int), .mode = 0644, .proc_handler = addrconf_sysctl_addr_gen_mode, }, { /* sentinel */ } };
static int __addrconf_sysctl_register(struct net *net, char *dev_name, struct inet6_dev *idev, struct ipv6_devconf *p) { int i, ifindex; struct ctl_table *table; char path[sizeof("net/ipv6/conf/") + IFNAMSIZ]; table = kmemdup(addrconf_sysctl, sizeof(addrconf_sysctl), GFP_KERNEL); if (!table) goto out; for (i = 0; table[i].data; i++) { table[i].data += (char *)p - (char *)&ipv6_devconf; /* If one of these is already set, then it is not safe to * overwrite either of them: this makes proc_dointvec_minmax * usable. */ if (!table[i].extra1 && !table[i].extra2) { table[i].extra1 = idev; /* embedded; no ref */ table[i].extra2 = net; } } snprintf(path, sizeof(path), "net/ipv6/conf/%s", dev_name); p->sysctl_header = register_net_sysctl(net, path, table); if (!p->sysctl_header) goto free; if (!strcmp(dev_name, "all")) ifindex = NETCONFA_IFINDEX_ALL; else if (!strcmp(dev_name, "default")) ifindex = NETCONFA_IFINDEX_DEFAULT; else ifindex = idev->dev->ifindex; inet6_netconf_notify_devconf(net, NETCONFA_ALL, ifindex, p); return 0; free: kfree(table); out: return -ENOBUFS; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)8132.66%16.25%
Nicolas Dichtel5120.56%16.25%
Pavel Emelyanov3614.52%531.25%
Eric W. Biedermann228.87%16.25%
Maciej Żenczykowski218.47%16.25%
Konstantin Khlebnikov135.24%16.25%
Dan Aloni104.03%16.25%
David L Stevens52.02%16.25%
Hideaki Yoshifuji / 吉藤英明31.21%16.25%
Arnaldo Carvalho de Melo31.21%16.25%
Ian Morris20.81%16.25%
Paulo Marques10.40%16.25%
Total248100.00%16100.00%


static void __addrconf_sysctl_unregister(struct ipv6_devconf *p) { struct ctl_table *table; if (!p->sysctl_header) return; table = p->sysctl_header->ctl_table_arg; unregister_net_sysctl_table(p->sysctl_header); p->sysctl_header = NULL; kfree(table); }

Contributors

PersonTokensPropCommitsCommitProp
Pavel Emelyanov3468.00%125.00%
Konstantin Khlebnikov1428.00%125.00%
Ian Morris12.00%125.00%
Lucian Adrian Grijincu12.00%125.00%
Total50100.00%4100.00%


static int addrconf_sysctl_register(struct inet6_dev *idev) { int err; if (!sysctl_dev_name_is_allowed(idev->dev->name)) return -EINVAL; err = neigh_sysctl_register(idev->dev, idev->nd_parms, &ndisc_ifinfo_sysctl_change); if (err) return err; err = __addrconf_sysctl_register(dev_net(idev->dev), idev->dev->name, idev, &idev->cnf); if (err) neigh_sysctl_unregister(idev->nd_parms); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Américo Wang4548.91%120.00%
Pavel Emelyanov4447.83%360.00%
Hideaki Yoshifuji / 吉藤英明33.26%120.00%
Total92100.00%5100.00%


static void addrconf_sysctl_unregister(struct inet6_dev *idev) { __addrconf_sysctl_unregister(&idev->cnf); neigh_sysctl_unregister(idev->nd_parms); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1661.54%133.33%
Pavel Emelyanov934.62%133.33%
Dan Aloni13.85%133.33%
Total26100.00%3100.00%

#endif
static int __net_init addrconf_init_net(struct net *net) { int err = -ENOMEM; struct ipv6_devconf *all, *dflt; all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL); if (!all) goto err_alloc_all; dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); if (!dflt) goto err_alloc_dflt; /* these will be inherited by all namespaces */ dflt->autoconf = ipv6_defaults.autoconf; dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; dflt->stable_secret.initialized = false; all->stable_secret.initialized = false; net->ipv6.devconf_all = all; net->ipv6.devconf_dflt = dflt; #ifdef CONFIG_SYSCTL err = __addrconf_sysctl_register(net, "all", NULL, all); if (err < 0) goto err_reg_all; err = __addrconf_sysctl_register(net, "default", NULL, dflt); if (err < 0) goto err_reg_dflt; #endif return 0; #ifdef CONFIG_SYSCTL err_reg_dflt: __addrconf_sysctl_unregister(all); err_reg_all: kfree(dflt); #endif err_alloc_dflt: kfree(all); err_alloc_all: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Pavel Emelyanov16178.92%116.67%
Brian Haley178.33%116.67%
Hannes Frederic Sowa167.84%116.67%
Hong Zhi Guo73.43%116.67%
Ian Morris20.98%116.67%
Alexey Dobriyan10.49%116.67%
Total204100.00%6100.00%


static void __net_exit addrconf_exit_net(struct net *net) { #ifdef CONFIG_SYSCTL __addrconf_sysctl_unregister(net->ipv6.devconf_dflt); __addrconf_sysctl_unregister(net->ipv6.devconf_all); #endif kfree(net->ipv6.devconf_dflt); kfree(net->ipv6.devconf_all); }

Contributors

PersonTokensPropCommitsCommitProp
Pavel Emelyanov5298.11%150.00%
Alexey Dobriyan11.89%150.00%
Total53100.00%2100.00%

static struct pernet_operations addrconf_ops = { .init = addrconf_init_net, .exit = addrconf_exit_net, }; static struct rtnl_af_ops inet6_ops __read_mostly = { .family = AF_INET6, .fill_link_af = inet6_fill_link_af, .get_link_af_size = inet6_get_link_af_size, .validate_link_af = inet6_validate_link_af, .set_link_af = inet6_set_link_af, }; /* * Init / cleanup code */
int __init addrconf_init(void) { struct inet6_dev *idev; int i, err; err = ipv6_addr_label_init(); if (err < 0) { pr_crit("%s: cannot initialize default policy table: %d\n", __func__, err); goto out; } err = register_pernet_subsys(&addrconf_ops); if (err < 0) goto out_addrlabel; addrconf_wq = create_workqueue("ipv6_addrconf"); if (!addrconf_wq) { err = -ENOMEM; goto out_nowq; } /* The addrconf netdev notifier requires that loopback_dev * has it's ipv6 private information allocated and setup * before it can bring up and give link-local addresses * to other devices which are up. * * Unfortunately, loopback_dev is not necessarily the first * entry in the global dev_base list of net devices. In fact, * it is likely to be the very last entry on that list. * So this causes the notifier registry below to try and * give link-local addresses to all devices besides loopback_dev * first, then loopback_dev, which cases all the non-loopback_dev * devices to fail to get a link-local address. * * So, as a temporary fix, allocate the ipv6 structure for * loopback_dev first by hand. * Longer term, all of the dependencies ipv6 has upon the loopback * device and it being up should be removed. */ rtnl_lock(); idev = ipv6_add_dev(init_net.loopback_dev); rtnl_unlock(); if (IS_ERR(idev)) { err = PTR_ERR(idev); goto errlo; } for (i = 0; i < IN6_ADDR_HSIZE; i++) INIT_HLIST_HEAD(&inet6_addr_lst[i]); register_netdevice_notifier(&ipv6_dev_notf); addrconf_verify(); rtnl_af_register(&inet6_ops); err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo, NULL); if (err < 0) goto errout; /* Only the first call to __rtnl_register can fail */ __rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL, NULL); __rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL, NULL); __rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr, inet6_dump_ifaddr, NULL); __rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL, inet6_dump_ifmcaddr, NULL); __rtnl_register(PF_INET6, RTM_GETANYCAST, NULL, inet6_dump_ifacaddr, NULL); __rtnl_register(PF_INET6, RTM_GETNETCONF, inet6_netconf_get_devconf, inet6_netconf_dump_devconf, NULL); ipv6_addr_label_rtnl_register(); return 0; errout: rtnl_af_unregister(&inet6_ops); unregister_netdevice_notifier(&ipv6_dev_notf); errlo: destroy_workqueue(addrconf_wq); out_nowq: unregister_pernet_subsys(&addrconf_ops); out_addrlabel: ipv6_addr_label_cleanup(); out: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf10033.11%29.09%
Stephen Hemminger3411.26%313.64%
Hannes Frederic Sowa309.93%14.55%
Neil Horman216.95%14.55%
Américo Wang206.62%14.55%
Hideaki Yoshifuji / 吉藤英明185.96%29.09%
Pavel Emelyanov175.63%14.55%
Nicolas Dichtel134.30%29.09%
Greg Rose123.97%14.55%
Herbert Xu123.97%14.55%
David S. Miller103.31%14.55%
Linus Torvalds (pre-git)92.98%418.18%
Joe Perches41.32%14.55%
Eric W. Biedermann20.66%14.55%
Total302100.00%22100.00%


void addrconf_cleanup(void) { struct net_device *dev; int i; unregister_netdevice_notifier(&ipv6_dev_notf); unregister_pernet_subsys(&addrconf_ops); ipv6_addr_label_cleanup(); rtnl_lock(); __rtnl_af_unregister(&inet6_ops); /* clean dev list */ for_each_netdev(&init_net, dev) { if (__in6_dev_get(dev) == NULL) continue; addrconf_ifdown(dev, 1); } addrconf_ifdown(init_net.loopback_dev, 2); /* * Check hash table. */ spin_lock_bh(&addrconf_hash_lock); for (i = 0; i < IN6_ADDR_HSIZE; i++) WARN_ON(!hlist_empty(&inet6_addr_lst[i])); spin_unlock_bh(&addrconf_hash_lock); cancel_delayed_work(&addr_chk_work); rtnl_unlock(); destroy_workqueue(addrconf_wq); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5442.52%535.71%
Daniel Lezcano3930.71%17.14%
Stephen Hemminger1511.81%321.43%
Hannes Frederic Sowa75.51%17.14%
Thomas Graf64.72%17.14%
Neil Horman32.36%17.14%
Pavel Emelyanov21.57%17.14%
David S. Miller10.79%17.14%
Total127100.00%14100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明568418.79%9717.90%
Linus Torvalds (pre-git)390612.91%234.24%
Hannes Frederic Sowa24598.13%264.80%
Thomas Graf16125.33%224.06%
Nicolas Dichtel16005.29%162.95%
Shirley Ma9623.18%50.92%
Stephen Hemminger9543.15%264.80%
David Ahern8272.73%81.48%
Alexander Aring7592.51%50.92%
Jiri Pirko6342.10%91.66%
Daniel Borkmann5621.86%71.29%
Pavel Emelyanov5531.83%132.40%
Eric Dumazet5231.73%142.58%
Herbert Xu5061.67%132.40%
Andy Gospodarek5011.66%20.37%
Noriaki Takamiya4901.62%50.92%
Brian Haley4491.48%91.66%
Thomas Haller4281.41%20.37%
Felix Jia4271.41%30.55%
Krishna Kumar3601.19%10.18%
Maciej Żenczykowski3051.01%30.55%
Erik Kline2910.96%30.55%
Hideaki Yoshifuji/吉藤英明2820.93%20.37%
Américo Wang2710.90%112.03%
Daniel Lezcano2540.84%91.66%
David L Stevens2330.77%40.74%
David S. Miller2090.69%173.14%
Neil Horman1910.63%40.74%
Andreas Hofmeister1760.58%10.18%
Mike Manning1670.55%30.55%
Madhu Challa1610.53%10.18%
Björn Mork1450.48%20.37%
Jiri Bohac1410.47%30.55%
Patrick McHardy1370.45%61.11%
David Lebrun1260.42%20.37%
Balakumaran Kannan1180.39%10.18%
Catalin(ux aka Dino) M. Boie1090.36%10.18%
Erik Nordmark1080.36%10.18%
Johannes Berg1070.35%30.55%
Ilpo Järvinen990.33%30.55%
Eric W. Biedermann980.32%71.29%
Francesco Ruggeri930.31%10.18%
Marcelo Ricardo Leitner900.30%20.37%
Alexander Duyck890.29%10.18%
Heiner Kallweit840.28%20.37%
Benjamin Thery820.27%40.74%
Moni Shoua740.24%10.18%
Mihai Maruseac710.23%10.18%
Konstantin Khlebnikov700.23%20.37%
Arnaldo Carvalho de Melo650.21%30.55%
Ian Morris580.19%20.37%
Gao Feng570.19%61.11%
Joe Perches570.19%50.92%
Paolo Abeni560.19%10.18%
Hangbin Liu510.17%10.18%
Harout Hedeshian510.17%10.18%
Ben Greear510.17%10.18%
Raghavendra K T500.17%10.18%
Alexander Smirnov500.17%10.18%
Linus Torvalds480.16%71.29%
Jamal Hadi Salim450.15%20.37%
Denis V. Lunev430.14%20.37%
Ben Hutchings430.14%30.55%
Rabin Vincent410.14%10.18%
Zhang Shengju410.14%10.18%
Joerg Roedel380.13%10.18%
Roland Dreier380.13%10.18%
Jiri Benc370.12%20.37%
Li Wei360.12%20.37%
John Stultz350.12%10.18%
Romain Kuntz330.11%20.37%
Octavian Purdila320.11%10.18%
Yasushi Asano310.10%10.18%
Benoit Boissinot300.10%10.18%
Fred L. Templin270.09%10.18%
Dan Aloni240.08%10.18%
Hiroyuki YAMAMORI220.07%10.18%
Ville Nuorvala210.07%20.37%
Mitsuru Chinen200.07%10.18%
Subash Abhinov Kasiviswanathan190.06%10.18%
Sabrina Dubroca190.06%30.55%
Sowmini Varadhan190.06%10.18%
Evgeniy Polyakov180.06%10.18%
Jens Rosenboom170.06%20.37%
Lubomir Rintel170.06%20.37%
Lorenzo Colitti170.06%20.37%
Ding Tianhong160.05%10.18%
Glenn Wurster150.05%10.18%
Mahesh Bandewar140.05%10.18%
Greg Rose120.04%10.18%
Alexey Dobriyan120.04%20.37%
Marcus Huewe120.04%10.18%
Wei Yongjun100.03%10.18%
Sascha Hlusiak100.03%10.18%
Jukka Rissanen100.03%10.18%
Kristian Slavov100.03%10.18%
Michał Wróbel90.03%10.18%
Cosmin Ratiu90.03%10.18%
Jay Vosburgh90.03%10.18%
Alexey Kuznetsov90.03%10.18%
Linus Lüssing80.03%10.18%
Ursula Braun70.02%10.18%
Hong Zhi Guo70.02%10.18%
Shmulik Ladkani70.02%20.37%
Thomas Gleixner60.02%10.18%
Aruna-Hewapathirane60.02%10.18%
Keir Fraser60.02%10.18%
Vladislav Yasevich60.02%10.18%
Daniel Walter60.02%10.18%
Martin KaFai Lau50.02%20.37%
Rémi Denis-Courmont50.02%10.18%
Roy Li50.02%10.18%
Masahide Nakamura50.02%10.18%
Ingo Oeser40.01%10.18%
Tore Anderson40.01%10.18%
Al Viro40.01%10.18%
Andrew Morton40.01%10.18%
Andrew Lunn40.01%10.18%
Jia He40.01%10.18%
Paulo Marques40.01%10.18%
Andrey Vagin40.01%10.18%
Harvey Harrison30.01%20.37%
Pablo Neira Ayuso30.01%10.18%
Juha-Matti Tapio30.01%10.18%
Arad, Ronen30.01%10.18%
Randy Dunlap30.01%10.18%
Adrian Bunk30.01%30.55%
Li RongQing30.01%20.37%
Tejun Heo30.01%10.18%
Ingo Molnar30.01%10.18%
Paul Gortmaker30.01%10.18%
Sorin Dumitru30.01%10.18%
Lai Jiangshan20.01%10.18%
Stephen Rothwell20.01%10.18%
Dave Jones20.01%10.18%
Florian Westphal10.00%10.18%
François-Xavier Le Bail10.00%10.18%
Masatake YAMATO10.00%10.18%
Yan Zheng10.00%10.18%
Anton Protopopov10.00%10.18%
John Fastabend10.00%10.18%
Kefeng Wang10.00%10.18%
Lucian Adrian Grijincu10.00%10.18%
Philippe De Muyter10.00%10.18%
Lucas De Marchi10.00%10.18%
Arjan van de Ven10.00%10.18%
Total30252100.00%542100.00%
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