Release 4.11 net/ipv6/addrconf.c
/*
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Graf | 20 | 90.91% | 1 | 50.00% |
| Shirley Ma | 2 | 9.09% | 1 | 50.00% |
| Total | 22 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maciej Żenczykowski | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maciej Żenczykowski | 79 | 100.00% | 1 | 100.00% |
| Total | 79 | 100.00% | 1 | 100.00% |
#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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pavel Emelyanov | 9 | 60.00% | 1 | 50.00% |
| Américo Wang | 6 | 40.00% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pavel Emelyanov | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
#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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mitsuru Chinen | 13 | 65.00% | 1 | 50.00% |
| David S. Miller | 7 | 35.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
static void addrconf_del_rs_timer(struct inet6_dev *idev)
{
if (del_timer(&idev->rs_timer))
__in6_dev_put(idev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hannes Frederic Sowa | 24 | 92.31% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 2 | 7.69% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static void addrconf_del_dad_work(struct inet6_ifaddr *ifp)
{
if (cancel_delayed_work(&ifp->dad_work))
__in6_ifa_put(ifp);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 21 | 80.77% | 1 | 33.33% |
| Hannes Frederic Sowa | 5 | 19.23% | 2 | 66.67% |
| Total | 26 | 100.00% | 3 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hannes Frederic Sowa | 42 | 97.67% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 1 | 2.33% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 31 | 72.09% | 1 | 33.33% |
| Hannes Frederic Sowa | 12 | 27.91% | 2 | 66.67% |
| Total | 43 | 100.00% | 3 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| Herbert Xu | 50 | 31.45% | 1 | 14.29% |
| Eric Dumazet | 38 | 23.90% | 2 | 28.57% |
| John Stultz | 35 | 22.01% | 1 | 14.29% |
| David L Stevens | 22 | 13.84% | 1 | 14.29% |
| Américo Wang | 12 | 7.55% | 1 | 14.29% |
| Pavel Emelyanov | 2 | 1.26% | 1 | 14.29% |
| Total | 159 | 100.00% | 7 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 167 | 29.09% | 9 | 18.00% |
| Linus Torvalds (pre-git) | 124 | 21.60% | 8 | 16.00% |
| Américo Wang | 72 | 12.54% | 2 | 4.00% |
| Hannes Frederic Sowa | 47 | 8.19% | 3 | 6.00% |
| Li Wei | 25 | 4.36% | 1 | 2.00% |
| Herbert Xu | 22 | 3.83% | 2 | 4.00% |
| Stephen Hemminger | 16 | 2.79% | 2 | 4.00% |
| Ben Hutchings | 13 | 2.26% | 1 | 2.00% |
| David L Stevens | 9 | 1.57% | 1 | 2.00% |
| Jiri Bohac | 7 | 1.22% | 2 | 4.00% |
| Felix Jia | 7 | 1.22% | 1 | 2.00% |
| Daniel Borkmann | 6 | 1.05% | 2 | 4.00% |
| Shirley Ma | 6 | 1.05% | 1 | 2.00% |
| Sabrina Dubroca | 5 | 0.87% | 1 | 2.00% |
| David S. Miller | 5 | 0.87% | 1 | 2.00% |
| Roy Li | 5 | 0.87% | 1 | 2.00% |
| Rémi Denis-Courmont | 5 | 0.87% | 1 | 2.00% |
| Linus Torvalds | 5 | 0.87% | 1 | 2.00% |
| Pavel Emelyanov | 5 | 0.87% | 1 | 2.00% |
| Andrew Morton | 4 | 0.70% | 1 | 2.00% |
| Ding Tianhong | 4 | 0.70% | 1 | 2.00% |
| Joe Perches | 3 | 0.52% | 1 | 2.00% |
| Ingo Oeser | 3 | 0.52% | 1 | 2.00% |
| Joerg Roedel | 3 | 0.52% | 1 | 2.00% |
| Ian Morris | 2 | 0.35% | 1 | 2.00% |
| Harvey Harrison | 2 | 0.35% | 1 | 2.00% |
| Eric Dumazet | 1 | 0.17% | 1 | 2.00% |
| Mitsuru Chinen | 1 | 0.17% | 1 | 2.00% |
| Total | 574 | 100.00% | 50 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| David L Stevens | 36 | 52.94% | 1 | 14.29% |
| Linus Torvalds (pre-git) | 19 | 27.94% | 3 | 42.86% |
| Stephen Hemminger | 9 | 13.24% | 1 | 14.29% |
| Américo Wang | 3 | 4.41% | 1 | 14.29% |
| Hideaki Yoshifuji / 吉藤英明 | 1 | 1.47% | 1 | 14.29% |
| Total | 68 | 100.00% | 7 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 60 | 54.55% | 3 | 42.86% |
| Zhang Shengju | 17 | 15.45% | 1 | 14.29% |
| Andy Gospodarek | 14 | 12.73% | 1 | 14.29% |
| Stephen Hemminger | 14 | 12.73% | 1 | 14.29% |
| David S. Miller | 5 | 4.55% | 1 | 14.29% |
| Total | 110 | 100.00% | 7 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 173 | 68.92% | 3 | 33.33% |
| Andy Gospodarek | 25 | 9.96% | 1 | 11.11% |
| Stephen Hemminger | 25 | 9.96% | 1 | 11.11% |
| Zhang Shengju | 19 | 7.57% | 1 | 11.11% |
| David S. Miller | 5 | 1.99% | 1 | 11.11% |
| Johannes Berg | 3 | 1.20% | 1 | 11.11% |
| Ian Morris | 1 | 0.40% | 1 | 11.11% |
| Total | 251 | 100.00% | 9 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 122 | 97.60% | 1 | 33.33% |
| Eric Dumazet | 2 | 1.60% | 1 | 33.33% |
| Ian Morris | 1 | 0.80% | 1 | 33.33% |
| Total | 125 | 100.00% | 3 | 100.00% |
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