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net/ipv4/devinet.c
61.9 KB
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/* * NET3 IP device support routines. * |
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* 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. * * Derived from the IP parts of dev.c 1.0.19 |
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* Authors: Ross Biro |
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * Mark Evans, <evansmp@uhura.aston.ac.uk> * * Additional Authors: * Alan Cox, <gw4pts@gw4pts.ampr.org> * Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> * * Changes: * Alexey Kuznetsov: pa_* fields are replaced with ifaddr * lists. * Cyrus Durgin: updated for kmod * Matthias Andree: in devinet_ioctl, compare label and * address (4.4BSD alias style support), * fall back to comparing just the label * if no match found. */ |
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|
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#include <linux/uaccess.h> |
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#include <linux/bitops.h> |
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#include <linux/capability.h> |
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#include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> |
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#include <linux/sched/signal.h> |
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#include <linux/string.h> #include <linux/mm.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/in.h> #include <linux/errno.h> #include <linux/interrupt.h> |
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#include <linux/if_addr.h> |
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#include <linux/if_ether.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> |
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#include <linux/init.h> #include <linux/notifier.h> #include <linux/inetdevice.h> #include <linux/igmp.h> |
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#include <linux/slab.h> |
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#include <linux/hash.h> |
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#ifdef CONFIG_SYSCTL #include <linux/sysctl.h> #endif #include <linux/kmod.h> |
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#include <linux/netconf.h> |
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|
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#include <net/arp.h> |
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#include <net/ip.h> #include <net/route.h> #include <net/ip_fib.h> |
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#include <net/rtnetlink.h> |
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#include <net/net_namespace.h> |
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#include <net/addrconf.h> |
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|
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static struct ipv4_devconf ipv4_devconf = { |
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.data = { |
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[IPV4_DEVCONF_ACCEPT_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SEND_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SECURE_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SHARED_MEDIA - 1] = 1, |
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[IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL - 1] = 10000 /*ms*/, [IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL - 1] = 1000 /*ms*/, |
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}, |
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}; static struct ipv4_devconf ipv4_devconf_dflt = { |
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.data = { |
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[IPV4_DEVCONF_ACCEPT_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SEND_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SECURE_REDIRECTS - 1] = 1, [IPV4_DEVCONF_SHARED_MEDIA - 1] = 1, [IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE - 1] = 1, |
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[IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL - 1] = 10000 /*ms*/, [IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL - 1] = 1000 /*ms*/, |
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}, |
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}; |
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#define IPV4_DEVCONF_DFLT(net, attr) \ IPV4_DEVCONF((*net->ipv4.devconf_dflt), attr) |
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static const struct nla_policy ifa_ipv4_policy[IFA_MAX+1] = { |
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[IFA_LOCAL] = { .type = NLA_U32 }, [IFA_ADDRESS] = { .type = NLA_U32 }, [IFA_BROADCAST] = { .type = NLA_U32 }, |
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[IFA_LABEL] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, |
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[IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) }, |
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[IFA_FLAGS] = { .type = NLA_U32 }, |
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}; |
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#define IN4_ADDR_HSIZE_SHIFT 8 #define IN4_ADDR_HSIZE (1U << IN4_ADDR_HSIZE_SHIFT) |
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static struct hlist_head inet_addr_lst[IN4_ADDR_HSIZE]; |
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|
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static u32 inet_addr_hash(const struct net *net, __be32 addr) |
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{ |
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u32 val = (__force u32) addr ^ net_hash_mix(net); |
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|
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return hash_32(val, IN4_ADDR_HSIZE_SHIFT); |
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} static void inet_hash_insert(struct net *net, struct in_ifaddr *ifa) { |
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u32 hash = inet_addr_hash(net, ifa->ifa_local); |
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|
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ASSERT_RTNL(); |
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hlist_add_head_rcu(&ifa->hash, &inet_addr_lst[hash]); |
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} static void inet_hash_remove(struct in_ifaddr *ifa) { |
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ASSERT_RTNL(); |
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hlist_del_init_rcu(&ifa->hash); |
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} |
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/** * __ip_dev_find - find the first device with a given source address. * @net: the net namespace * @addr: the source address * @devref: if true, take a reference on the found device * * If a caller uses devref=false, it should be protected by RCU, or RTNL */ struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref) { |
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u32 hash = inet_addr_hash(net, addr); |
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struct net_device *result = NULL; struct in_ifaddr *ifa; |
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rcu_read_lock(); |
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hlist_for_each_entry_rcu(ifa, &inet_addr_lst[hash], hash) { |
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if (ifa->ifa_local == addr) { |
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struct net_device *dev = ifa->ifa_dev->dev; if (!net_eq(dev_net(dev), net)) continue; |
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result = dev; break; } } |
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if (!result) { struct flowi4 fl4 = { .daddr = addr }; struct fib_result res = { 0 }; struct fib_table *local; /* Fallback to FIB local table so that communication * over loopback subnets work. */ local = fib_get_table(net, RT_TABLE_LOCAL); if (local && !fib_table_lookup(local, &fl4, &res, FIB_LOOKUP_NOREF) && res.type == RTN_LOCAL) result = FIB_RES_DEV(res); } |
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if (result && devref) dev_hold(result); rcu_read_unlock(); return result; } EXPORT_SYMBOL(__ip_dev_find); |
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static void rtmsg_ifa(int event, struct in_ifaddr *, struct nlmsghdr *, u32); |
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|
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static BLOCKING_NOTIFIER_HEAD(inetaddr_chain); |
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static BLOCKING_NOTIFIER_HEAD(inetaddr_validator_chain); |
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static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, int destroy); #ifdef CONFIG_SYSCTL |
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static int devinet_sysctl_register(struct in_device *idev); |
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static void devinet_sysctl_unregister(struct in_device *idev); #else |
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static int devinet_sysctl_register(struct in_device *idev) |
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{ |
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return 0; |
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} |
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static void devinet_sysctl_unregister(struct in_device *idev) |
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{ } |
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#endif /* Locks all the inet devices. */ static struct in_ifaddr *inet_alloc_ifa(void) { |
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return kzalloc(sizeof(struct in_ifaddr), GFP_KERNEL); |
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} static void inet_rcu_free_ifa(struct rcu_head *head) { struct in_ifaddr *ifa = container_of(head, struct in_ifaddr, rcu_head); if (ifa->ifa_dev) in_dev_put(ifa->ifa_dev); kfree(ifa); } |
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static void inet_free_ifa(struct in_ifaddr *ifa) |
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{ call_rcu(&ifa->rcu_head, inet_rcu_free_ifa); } void in_dev_finish_destroy(struct in_device *idev) { struct net_device *dev = idev->dev; |
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WARN_ON(idev->ifa_list); WARN_ON(idev->mc_list); |
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kfree(rcu_dereference_protected(idev->mc_hash, 1)); |
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#ifdef NET_REFCNT_DEBUG |
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pr_debug("%s: %p=%s ", __func__, idev, dev ? dev->name : "NIL"); |
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#endif dev_put(dev); if (!idev->dead) |
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pr_err("Freeing alive in_device %p ", idev); else |
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kfree(idev); |
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} |
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EXPORT_SYMBOL(in_dev_finish_destroy); |
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|
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static struct in_device *inetdev_init(struct net_device *dev) |
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{ struct in_device *in_dev; |
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int err = -ENOMEM; |
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ASSERT_RTNL(); |
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in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL); |
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if (!in_dev) goto out; |
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memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt, |
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sizeof(in_dev->cnf)); |
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in_dev->cnf.sysctl = NULL; in_dev->dev = dev; |
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in_dev->arp_parms = neigh_parms_alloc(dev, &arp_tbl); if (!in_dev->arp_parms) |
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goto out_kfree; |
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if (IPV4_DEVCONF(in_dev->cnf, FORWARDING)) dev_disable_lro(dev); |
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/* Reference in_dev->dev */ dev_hold(dev); |
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/* Account for reference dev->ip_ptr (below) */ |
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refcount_set(&in_dev->refcnt, 1); |
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|
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err = devinet_sysctl_register(in_dev); if (err) { in_dev->dead = 1; in_dev_put(in_dev); in_dev = NULL; goto out; } |
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ip_mc_init_dev(in_dev); if (dev->flags & IFF_UP) ip_mc_up(in_dev); |
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|
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/* we can receive as soon as ip_ptr is set -- do this last */ |
cf778b00e net: reintroduce ... |
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rcu_assign_pointer(dev->ip_ptr, in_dev); |
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out: |
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return in_dev ?: ERR_PTR(err); |
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out_kfree: kfree(in_dev); in_dev = NULL; goto out; } static void in_dev_rcu_put(struct rcu_head *head) { struct in_device *idev = container_of(head, struct in_device, rcu_head); in_dev_put(idev); } static void inetdev_destroy(struct in_device *in_dev) { struct in_ifaddr *ifa; struct net_device *dev; ASSERT_RTNL(); dev = in_dev->dev; |
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in_dev->dead = 1; ip_mc_destroy_dev(in_dev); while ((ifa = in_dev->ifa_list) != NULL) { inet_del_ifa(in_dev, &in_dev->ifa_list, 0); inet_free_ifa(ifa); } |
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RCU_INIT_POINTER(dev->ip_ptr, NULL); |
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|
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devinet_sysctl_unregister(in_dev); |
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neigh_parms_release(&arp_tbl, in_dev->arp_parms); arp_ifdown(dev); call_rcu(&in_dev->rcu_head, in_dev_rcu_put); } |
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int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b) |
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{ rcu_read_lock(); for_primary_ifa(in_dev) { if (inet_ifa_match(a, ifa)) { if (!b || inet_ifa_match(b, ifa)) { rcu_read_unlock(); return 1; } } } endfor_ifa(in_dev); rcu_read_unlock(); return 0; } |
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static void __inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, |
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int destroy, struct nlmsghdr *nlh, u32 portid) |
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{ |
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struct in_ifaddr *promote = NULL; |
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struct in_ifaddr *ifa, *ifa1 = *ifap; struct in_ifaddr *last_prim = in_dev->ifa_list; struct in_ifaddr *prev_prom = NULL; int do_promote = IN_DEV_PROMOTE_SECONDARIES(in_dev); |
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ASSERT_RTNL(); |
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if (in_dev->dead) goto no_promotions; |
e905a9eda [NET] IPV4: Fix w... |
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/* 1. Deleting primary ifaddr forces deletion all secondaries |
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* unless alias promotion is set **/ |
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if (!(ifa1->ifa_flags & IFA_F_SECONDARY)) { |
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struct in_ifaddr **ifap1 = &ifa1->ifa_next; while ((ifa = *ifap1) != NULL) { |
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if (!(ifa->ifa_flags & IFA_F_SECONDARY) && |
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ifa1->ifa_scope <= ifa->ifa_scope) last_prim = ifa; |
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if (!(ifa->ifa_flags & IFA_F_SECONDARY) || ifa1->ifa_mask != ifa->ifa_mask || !inet_ifa_match(ifa1->ifa_address, ifa)) { ifap1 = &ifa->ifa_next; |
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prev_prom = ifa; |
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continue; } |
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if (!do_promote) { |
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inet_hash_remove(ifa); |
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*ifap1 = ifa->ifa_next; |
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|
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rtmsg_ifa(RTM_DELADDR, ifa, nlh, portid); |
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blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa); |
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inet_free_ifa(ifa); } else { promote = ifa; break; } |
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} } |
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/* On promotion all secondaries from subnet are changing * the primary IP, we must remove all their routes silently * and later to add them back with new prefsrc. Do this * while all addresses are on the device list. */ for (ifa = promote; ifa; ifa = ifa->ifa_next) { if (ifa1->ifa_mask == ifa->ifa_mask && inet_ifa_match(ifa1->ifa_address, ifa)) fib_del_ifaddr(ifa, ifa1); } |
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no_promotions: |
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/* 2. Unlink it */ *ifap = ifa1->ifa_next; |
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inet_hash_remove(ifa1); |
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/* 3. Announce address deletion */ /* Send message first, then call notifier. At first sight, FIB update triggered by notifier will refer to already deleted ifaddr, that could confuse netlink listeners. It is not true: look, gated sees that route deleted and if it still thinks that ifaddr is valid, it will try to restore deleted routes... Grr. So that, this order is correct. */ |
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rtmsg_ifa(RTM_DELADDR, ifa1, nlh, portid); |
e041c6834 [PATCH] Notifier ... |
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blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1); |
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|
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if (promote) { |
04024b937 ipv4: optimize ro... |
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struct in_ifaddr *next_sec = promote->ifa_next; |
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if (prev_prom) { prev_prom->ifa_next = promote->ifa_next; promote->ifa_next = last_prim->ifa_next; last_prim->ifa_next = promote; } |
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|
8f937c609 [IPV4]: Primary a... |
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promote->ifa_flags &= ~IFA_F_SECONDARY; |
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rtmsg_ifa(RTM_NEWADDR, promote, nlh, portid); |
e041c6834 [PATCH] Notifier ... |
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blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, promote); |
04024b937 ipv4: optimize ro... |
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for (ifa = next_sec; ifa; ifa = ifa->ifa_next) { |
0ff60a456 [IPV4]: Fix secon... |
403 404 405 406 407 408 409 |
if (ifa1->ifa_mask != ifa->ifa_mask || !inet_ifa_match(ifa1->ifa_address, ifa)) continue; fib_add_ifaddr(ifa); } } |
6363097cc [IPV4]: Do not re... |
410 |
if (destroy) |
0ff60a456 [IPV4]: Fix secon... |
411 |
inet_free_ifa(ifa1); |
1da177e4c Linux-2.6.12-rc2 |
412 |
} |
d6062cbbd [IPv4] address: C... |
413 414 415 416 417 |
static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, int destroy) { __inet_del_ifa(in_dev, ifap, destroy, NULL, 0); } |
5c766d642 ipv4: introduce a... |
418 419 420 |
static void check_lifetime(struct work_struct *work); static DECLARE_DELAYED_WORK(check_lifetime_work, check_lifetime); |
d6062cbbd [IPv4] address: C... |
421 |
static int __inet_insert_ifa(struct in_ifaddr *ifa, struct nlmsghdr *nlh, |
15e473046 netlink: Rename p... |
422 |
u32 portid) |
1da177e4c Linux-2.6.12-rc2 |
423 424 425 |
{ struct in_device *in_dev = ifa->ifa_dev; struct in_ifaddr *ifa1, **ifap, **last_primary; |
3ad7d2468 Ipvlan should ret... |
426 427 |
struct in_validator_info ivi; int ret; |
1da177e4c Linux-2.6.12-rc2 |
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 |
ASSERT_RTNL(); if (!ifa->ifa_local) { inet_free_ifa(ifa); return 0; } ifa->ifa_flags &= ~IFA_F_SECONDARY; last_primary = &in_dev->ifa_list; for (ifap = &in_dev->ifa_list; (ifa1 = *ifap) != NULL; ifap = &ifa1->ifa_next) { if (!(ifa1->ifa_flags & IFA_F_SECONDARY) && ifa->ifa_scope <= ifa1->ifa_scope) last_primary = &ifa1->ifa_next; if (ifa1->ifa_mask == ifa->ifa_mask && inet_ifa_match(ifa1->ifa_address, ifa)) { if (ifa1->ifa_local == ifa->ifa_local) { inet_free_ifa(ifa); return -EEXIST; } if (ifa1->ifa_scope != ifa->ifa_scope) { inet_free_ifa(ifa); return -EINVAL; } ifa->ifa_flags |= IFA_F_SECONDARY; } } |
3ad7d2468 Ipvlan should ret... |
457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 |
/* Allow any devices that wish to register ifaddr validtors to weigh * in now, before changes are committed. The rntl lock is serializing * access here, so the state should not change between a validator call * and a final notify on commit. This isn't invoked on promotion under * the assumption that validators are checking the address itself, and * not the flags. */ ivi.ivi_addr = ifa->ifa_address; ivi.ivi_dev = ifa->ifa_dev; ret = blocking_notifier_call_chain(&inetaddr_validator_chain, NETDEV_UP, &ivi); ret = notifier_to_errno(ret); if (ret) { inet_free_ifa(ifa); return ret; } |
1da177e4c Linux-2.6.12-rc2 |
473 |
if (!(ifa->ifa_flags & IFA_F_SECONDARY)) { |
63862b5be net: replace macr... |
474 |
prandom_seed((__force u32) ifa->ifa_local); |
1da177e4c Linux-2.6.12-rc2 |
475 476 477 478 479 |
ifap = last_primary; } ifa->ifa_next = *ifap; *ifap = ifa; |
fd23c3b31 ipv4: Add hash ta... |
480 |
inet_hash_insert(dev_net(in_dev->dev), ifa); |
5c766d642 ipv4: introduce a... |
481 |
cancel_delayed_work(&check_lifetime_work); |
906e073f3 net/ipv4: queue w... |
482 |
queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, 0); |
5c766d642 ipv4: introduce a... |
483 |
|
1da177e4c Linux-2.6.12-rc2 |
484 485 486 |
/* Send message first, then call notifier. Notifier will trigger FIB update, so that listeners of netlink will know about new ifaddr */ |
15e473046 netlink: Rename p... |
487 |
rtmsg_ifa(RTM_NEWADDR, ifa, nlh, portid); |
e041c6834 [PATCH] Notifier ... |
488 |
blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa); |
1da177e4c Linux-2.6.12-rc2 |
489 490 491 |
return 0; } |
d6062cbbd [IPv4] address: C... |
492 493 494 495 |
static int inet_insert_ifa(struct in_ifaddr *ifa) { return __inet_insert_ifa(ifa, NULL, 0); } |
1da177e4c Linux-2.6.12-rc2 |
496 497 |
static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa) { |
e5ed63991 [IPV4]: Replace _... |
498 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
1da177e4c Linux-2.6.12-rc2 |
499 500 501 502 |
ASSERT_RTNL(); if (!in_dev) { |
71e27da96 [IPV4]: Restore o... |
503 504 |
inet_free_ifa(ifa); return -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
505 |
} |
71e27da96 [IPV4]: Restore o... |
506 |
ipv4_devconf_setall(in_dev); |
1d4c8c298 neigh: restore ol... |
507 |
neigh_parms_data_state_setall(in_dev->arp_parms); |
1da177e4c Linux-2.6.12-rc2 |
508 |
if (ifa->ifa_dev != in_dev) { |
547b792ca net: convert BUG_... |
509 |
WARN_ON(ifa->ifa_dev); |
1da177e4c Linux-2.6.12-rc2 |
510 511 512 |
in_dev_hold(in_dev); ifa->ifa_dev = in_dev; } |
f97c1e0c6 [IPV4] net/ipv4: ... |
513 |
if (ipv4_is_loopback(ifa->ifa_local)) |
1da177e4c Linux-2.6.12-rc2 |
514 515 516 |
ifa->ifa_scope = RT_SCOPE_HOST; return inet_insert_ifa(ifa); } |
8723e1b4a inet: RCU changes... |
517 518 519 |
/* Caller must hold RCU or RTNL : * We dont take a reference on found in_device */ |
7fee0ca23 [NETNS]: Add netn... |
520 |
struct in_device *inetdev_by_index(struct net *net, int ifindex) |
1da177e4c Linux-2.6.12-rc2 |
521 522 523 |
{ struct net_device *dev; struct in_device *in_dev = NULL; |
c148fc2e3 ipv4: inetdev_by_... |
524 525 526 |
rcu_read_lock(); dev = dev_get_by_index_rcu(net, ifindex); |
1da177e4c Linux-2.6.12-rc2 |
527 |
if (dev) |
8723e1b4a inet: RCU changes... |
528 |
in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
c148fc2e3 ipv4: inetdev_by_... |
529 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
530 531 |
return in_dev; } |
9f9354b92 net: net/ipv4/dev... |
532 |
EXPORT_SYMBOL(inetdev_by_index); |
1da177e4c Linux-2.6.12-rc2 |
533 534 |
/* Called only from RTNL semaphored context. No locks. */ |
60cad5da5 [IPV4]: annotate ... |
535 536 |
struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask) |
1da177e4c Linux-2.6.12-rc2 |
537 538 539 540 541 542 543 544 545 |
{ ASSERT_RTNL(); for_primary_ifa(in_dev) { if (ifa->ifa_mask == mask && inet_ifa_match(prefix, ifa)) return ifa; } endfor_ifa(in_dev); return NULL; } |
93a714d6b multicast: Extend... |
546 547 548 549 550 551 552 553 554 555 556 557 |
static int ip_mc_config(struct sock *sk, bool join, const struct in_ifaddr *ifa) { struct ip_mreqn mreq = { .imr_multiaddr.s_addr = ifa->ifa_address, .imr_ifindex = ifa->ifa_dev->dev->ifindex, }; int ret; ASSERT_RTNL(); lock_sock(sk); if (join) |
54ff9ef36 ipv4, ipv6: kill ... |
558 |
ret = ip_mc_join_group(sk, &mreq); |
93a714d6b multicast: Extend... |
559 |
else |
54ff9ef36 ipv4, ipv6: kill ... |
560 |
ret = ip_mc_leave_group(sk, &mreq); |
93a714d6b multicast: Extend... |
561 562 563 564 |
release_sock(sk); return ret; } |
c21ef3e34 net: rtnetlink: p... |
565 566 |
static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) |
1da177e4c Linux-2.6.12-rc2 |
567 |
{ |
3b1e0a655 [NET] NETNS: Omit... |
568 |
struct net *net = sock_net(skb->sk); |
dfdd5fd4e [IPV4]: Convert a... |
569 |
struct nlattr *tb[IFA_MAX+1]; |
1da177e4c Linux-2.6.12-rc2 |
570 |
struct in_device *in_dev; |
dfdd5fd4e [IPV4]: Convert a... |
571 |
struct ifaddrmsg *ifm; |
1da177e4c Linux-2.6.12-rc2 |
572 |
struct in_ifaddr *ifa, **ifap; |
dfdd5fd4e [IPV4]: Convert a... |
573 |
int err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
574 575 |
ASSERT_RTNL(); |
fceb6435e netlink: pass ext... |
576 |
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy, |
c21ef3e34 net: rtnetlink: p... |
577 |
extack); |
dfdd5fd4e [IPV4]: Convert a... |
578 579 580 581 |
if (err < 0) goto errout; ifm = nlmsg_data(nlh); |
7fee0ca23 [NETNS]: Add netn... |
582 |
in_dev = inetdev_by_index(net, ifm->ifa_index); |
51456b291 ipv4: coding styl... |
583 |
if (!in_dev) { |
dfdd5fd4e [IPV4]: Convert a... |
584 585 586 |
err = -ENODEV; goto errout; } |
1da177e4c Linux-2.6.12-rc2 |
587 588 |
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) { |
dfdd5fd4e [IPV4]: Convert a... |
589 |
if (tb[IFA_LOCAL] && |
67b61f6c1 netlink: implemen... |
590 |
ifa->ifa_local != nla_get_in_addr(tb[IFA_LOCAL])) |
dfdd5fd4e [IPV4]: Convert a... |
591 592 593 |
continue; if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label)) |
1da177e4c Linux-2.6.12-rc2 |
594 |
continue; |
dfdd5fd4e [IPV4]: Convert a... |
595 596 597 |
if (tb[IFA_ADDRESS] && (ifm->ifa_prefixlen != ifa->ifa_prefixlen || |
67b61f6c1 netlink: implemen... |
598 |
!inet_ifa_match(nla_get_in_addr(tb[IFA_ADDRESS]), ifa))) |
dfdd5fd4e [IPV4]: Convert a... |
599 |
continue; |
93a714d6b multicast: Extend... |
600 601 |
if (ipv4_is_multicast(ifa->ifa_address)) ip_mc_config(net->ipv4.mc_autojoin_sk, false, ifa); |
15e473046 netlink: Rename p... |
602 |
__inet_del_ifa(in_dev, ifap, 1, nlh, NETLINK_CB(skb).portid); |
1da177e4c Linux-2.6.12-rc2 |
603 604 |
return 0; } |
dfdd5fd4e [IPV4]: Convert a... |
605 606 607 608 |
err = -EADDRNOTAVAIL; errout: return err; |
1da177e4c Linux-2.6.12-rc2 |
609 |
} |
5c766d642 ipv4: introduce a... |
610 611 612 613 614 615 |
#define INFINITY_LIFE_TIME 0xFFFFFFFF static void check_lifetime(struct work_struct *work) { unsigned long now, next, next_sec, next_sched; struct in_ifaddr *ifa; |
c988d1e8c net: ipv4: fix sc... |
616 |
struct hlist_node *n; |
5c766d642 ipv4: introduce a... |
617 618 619 620 |
int i; now = jiffies; next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY); |
5c766d642 ipv4: introduce a... |
621 |
for (i = 0; i < IN4_ADDR_HSIZE; i++) { |
c988d1e8c net: ipv4: fix sc... |
622 623 624 |
bool change_needed = false; rcu_read_lock(); |
b67bfe0d4 hlist: drop the n... |
625 |
hlist_for_each_entry_rcu(ifa, &inet_addr_lst[i], hash) { |
5c766d642 ipv4: introduce a... |
626 627 628 629 630 631 632 633 634 635 636 |
unsigned long age; if (ifa->ifa_flags & IFA_F_PERMANENT) continue; /* We try to batch several events at once. */ age = (now - ifa->ifa_tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ; if (ifa->ifa_valid_lft != INFINITY_LIFE_TIME && age >= ifa->ifa_valid_lft) { |
c988d1e8c net: ipv4: fix sc... |
637 |
change_needed = true; |
5c766d642 ipv4: introduce a... |
638 639 640 641 642 643 644 645 |
} else if (ifa->ifa_preferred_lft == INFINITY_LIFE_TIME) { continue; } else if (age >= ifa->ifa_preferred_lft) { if (time_before(ifa->ifa_tstamp + ifa->ifa_valid_lft * HZ, next)) next = ifa->ifa_tstamp + ifa->ifa_valid_lft * HZ; |
c988d1e8c net: ipv4: fix sc... |
646 647 |
if (!(ifa->ifa_flags & IFA_F_DEPRECATED)) change_needed = true; |
5c766d642 ipv4: introduce a... |
648 649 650 651 652 653 654 |
} else if (time_before(ifa->ifa_tstamp + ifa->ifa_preferred_lft * HZ, next)) { next = ifa->ifa_tstamp + ifa->ifa_preferred_lft * HZ; } } |
c988d1e8c net: ipv4: fix sc... |
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 |
rcu_read_unlock(); if (!change_needed) continue; rtnl_lock(); hlist_for_each_entry_safe(ifa, n, &inet_addr_lst[i], hash) { unsigned long age; if (ifa->ifa_flags & IFA_F_PERMANENT) continue; /* We try to batch several events at once. */ age = (now - ifa->ifa_tstamp + ADDRCONF_TIMER_FUZZ_MINUS) / HZ; if (ifa->ifa_valid_lft != INFINITY_LIFE_TIME && age >= ifa->ifa_valid_lft) { struct in_ifaddr **ifap; for (ifap = &ifa->ifa_dev->ifa_list; *ifap != NULL; ifap = &(*ifap)->ifa_next) { if (*ifap == ifa) { inet_del_ifa(ifa->ifa_dev, ifap, 1); break; } } } else if (ifa->ifa_preferred_lft != INFINITY_LIFE_TIME && age >= ifa->ifa_preferred_lft && !(ifa->ifa_flags & IFA_F_DEPRECATED)) { ifa->ifa_flags |= IFA_F_DEPRECATED; rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0); } } rtnl_unlock(); |
5c766d642 ipv4: introduce a... |
690 |
} |
5c766d642 ipv4: introduce a... |
691 692 693 694 695 696 697 698 699 700 701 702 |
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; now = jiffies; /* And minimum interval is ADDRCONF_TIMER_FUZZ_MAX. */ if (time_before(next_sched, now + ADDRCONF_TIMER_FUZZ_MAX)) next_sched = now + ADDRCONF_TIMER_FUZZ_MAX; |
906e073f3 net/ipv4: queue w... |
703 704 |
queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, next_sched - now); |
5c766d642 ipv4: introduce a... |
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 |
} static void set_ifa_lifetime(struct in_ifaddr *ifa, __u32 valid_lft, __u32 prefered_lft) { unsigned long timeout; ifa->ifa_flags &= ~(IFA_F_PERMANENT | IFA_F_DEPRECATED); timeout = addrconf_timeout_fixup(valid_lft, HZ); if (addrconf_finite_timeout(timeout)) ifa->ifa_valid_lft = timeout; else ifa->ifa_flags |= IFA_F_PERMANENT; timeout = addrconf_timeout_fixup(prefered_lft, HZ); if (addrconf_finite_timeout(timeout)) { if (timeout == 0) ifa->ifa_flags |= IFA_F_DEPRECATED; ifa->ifa_preferred_lft = timeout; } ifa->ifa_tstamp = jiffies; if (!ifa->ifa_cstamp) ifa->ifa_cstamp = ifa->ifa_tstamp; } static struct in_ifaddr *rtm_to_ifaddr(struct net *net, struct nlmsghdr *nlh, __u32 *pvalid_lft, __u32 *pprefered_lft) |
1da177e4c Linux-2.6.12-rc2 |
733 |
{ |
5c7539781 [IPV4]: Convert a... |
734 735 736 |
struct nlattr *tb[IFA_MAX+1]; struct in_ifaddr *ifa; struct ifaddrmsg *ifm; |
1da177e4c Linux-2.6.12-rc2 |
737 738 |
struct net_device *dev; struct in_device *in_dev; |
7b2185747 [IPV4]: Small sty... |
739 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
740 |
|
fceb6435e netlink: pass ext... |
741 742 |
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy, NULL); |
5c7539781 [IPV4]: Convert a... |
743 744 |
if (err < 0) goto errout; |
1da177e4c Linux-2.6.12-rc2 |
745 |
|
5c7539781 [IPV4]: Convert a... |
746 |
ifm = nlmsg_data(nlh); |
7b2185747 [IPV4]: Small sty... |
747 |
err = -EINVAL; |
51456b291 ipv4: coding styl... |
748 |
if (ifm->ifa_prefixlen > 32 || !tb[IFA_LOCAL]) |
5c7539781 [IPV4]: Convert a... |
749 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
750 |
|
4b8aa9abe [NETNS]: Process ... |
751 |
dev = __dev_get_by_index(net, ifm->ifa_index); |
7b2185747 [IPV4]: Small sty... |
752 |
err = -ENODEV; |
51456b291 ipv4: coding styl... |
753 |
if (!dev) |
5c7539781 [IPV4]: Convert a... |
754 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
755 |
|
5c7539781 [IPV4]: Convert a... |
756 |
in_dev = __in_dev_get_rtnl(dev); |
7b2185747 [IPV4]: Small sty... |
757 |
err = -ENOBUFS; |
51456b291 ipv4: coding styl... |
758 |
if (!in_dev) |
71e27da96 [IPV4]: Restore o... |
759 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
760 |
|
5c7539781 [IPV4]: Convert a... |
761 |
ifa = inet_alloc_ifa(); |
51456b291 ipv4: coding styl... |
762 |
if (!ifa) |
5c7539781 [IPV4]: Convert a... |
763 764 765 766 |
/* * A potential indev allocation can be left alive, it stays * assigned to its device and is destroy with it. */ |
5c7539781 [IPV4]: Convert a... |
767 |
goto errout; |
5c7539781 [IPV4]: Convert a... |
768 |
|
a4e65d36a [IPV4]: Swap the ... |
769 |
ipv4_devconf_setall(in_dev); |
1d4c8c298 neigh: restore ol... |
770 |
neigh_parms_data_state_setall(in_dev->arp_parms); |
5c7539781 [IPV4]: Convert a... |
771 |
in_dev_hold(in_dev); |
51456b291 ipv4: coding styl... |
772 |
if (!tb[IFA_ADDRESS]) |
5c7539781 [IPV4]: Convert a... |
773 |
tb[IFA_ADDRESS] = tb[IFA_LOCAL]; |
1da177e4c Linux-2.6.12-rc2 |
774 |
|
fd23c3b31 ipv4: Add hash ta... |
775 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
776 777 |
ifa->ifa_prefixlen = ifm->ifa_prefixlen; ifa->ifa_mask = inet_make_mask(ifm->ifa_prefixlen); |
ad6c81359 ipv4: add support... |
778 779 |
ifa->ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; |
1da177e4c Linux-2.6.12-rc2 |
780 |
ifa->ifa_scope = ifm->ifa_scope; |
5c7539781 [IPV4]: Convert a... |
781 |
ifa->ifa_dev = in_dev; |
67b61f6c1 netlink: implemen... |
782 783 |
ifa->ifa_local = nla_get_in_addr(tb[IFA_LOCAL]); ifa->ifa_address = nla_get_in_addr(tb[IFA_ADDRESS]); |
5c7539781 [IPV4]: Convert a... |
784 785 |
if (tb[IFA_BROADCAST]) |
67b61f6c1 netlink: implemen... |
786 |
ifa->ifa_broadcast = nla_get_in_addr(tb[IFA_BROADCAST]); |
5c7539781 [IPV4]: Convert a... |
787 |
|
5c7539781 [IPV4]: Convert a... |
788 789 |
if (tb[IFA_LABEL]) nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ); |
1da177e4c Linux-2.6.12-rc2 |
790 791 |
else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
5c766d642 ipv4: introduce a... |
792 793 794 795 796 797 |
if (tb[IFA_CACHEINFO]) { struct ifa_cacheinfo *ci; ci = nla_data(tb[IFA_CACHEINFO]); if (!ci->ifa_valid || ci->ifa_prefered > ci->ifa_valid) { err = -EINVAL; |
446266b0c net: rtm_to_ifadd... |
798 |
goto errout_free; |
5c766d642 ipv4: introduce a... |
799 800 801 802 |
} *pvalid_lft = ci->ifa_valid; *pprefered_lft = ci->ifa_prefered; } |
5c7539781 [IPV4]: Convert a... |
803 |
return ifa; |
446266b0c net: rtm_to_ifadd... |
804 805 |
errout_free: inet_free_ifa(ifa); |
5c7539781 [IPV4]: Convert a... |
806 807 808 |
errout: return ERR_PTR(err); } |
5c766d642 ipv4: introduce a... |
809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 |
static struct in_ifaddr *find_matching_ifa(struct in_ifaddr *ifa) { struct in_device *in_dev = ifa->ifa_dev; struct in_ifaddr *ifa1, **ifap; if (!ifa->ifa_local) return NULL; for (ifap = &in_dev->ifa_list; (ifa1 = *ifap) != NULL; ifap = &ifa1->ifa_next) { if (ifa1->ifa_mask == ifa->ifa_mask && inet_ifa_match(ifa1->ifa_address, ifa) && ifa1->ifa_local == ifa->ifa_local) return ifa1; } return NULL; } |
c21ef3e34 net: rtnetlink: p... |
826 827 |
static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) |
5c7539781 [IPV4]: Convert a... |
828 |
{ |
3b1e0a655 [NET] NETNS: Omit... |
829 |
struct net *net = sock_net(skb->sk); |
5c7539781 [IPV4]: Convert a... |
830 |
struct in_ifaddr *ifa; |
5c766d642 ipv4: introduce a... |
831 832 833 |
struct in_ifaddr *ifa_existing; __u32 valid_lft = INFINITY_LIFE_TIME; __u32 prefered_lft = INFINITY_LIFE_TIME; |
5c7539781 [IPV4]: Convert a... |
834 835 |
ASSERT_RTNL(); |
5c766d642 ipv4: introduce a... |
836 |
ifa = rtm_to_ifaddr(net, nlh, &valid_lft, &prefered_lft); |
5c7539781 [IPV4]: Convert a... |
837 838 |
if (IS_ERR(ifa)) return PTR_ERR(ifa); |
5c766d642 ipv4: introduce a... |
839 840 841 |
ifa_existing = find_matching_ifa(ifa); if (!ifa_existing) { /* It would be best to check for !NLM_F_CREATE here but |
614d056c8 ipv4: minor spell... |
842 |
* userspace already relies on not having to provide this. |
5c766d642 ipv4: introduce a... |
843 844 |
*/ set_ifa_lifetime(ifa, valid_lft, prefered_lft); |
93a714d6b multicast: Extend... |
845 846 847 848 849 850 851 852 853 |
if (ifa->ifa_flags & IFA_F_MCAUTOJOIN) { int ret = ip_mc_config(net->ipv4.mc_autojoin_sk, true, ifa); if (ret < 0) { inet_free_ifa(ifa); return ret; } } |
5c766d642 ipv4: introduce a... |
854 855 856 857 858 859 860 |
return __inet_insert_ifa(ifa, nlh, NETLINK_CB(skb).portid); } else { inet_free_ifa(ifa); if (nlh->nlmsg_flags & NLM_F_EXCL || !(nlh->nlmsg_flags & NLM_F_REPLACE)) return -EEXIST; |
34e2ed34a net: ipv4: notify... |
861 862 |
ifa = ifa_existing; set_ifa_lifetime(ifa, valid_lft, prefered_lft); |
05a324b9c net: ipv4: reset ... |
863 |
cancel_delayed_work(&check_lifetime_work); |
906e073f3 net/ipv4: queue w... |
864 865 |
queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, 0); |
34e2ed34a net: ipv4: notify... |
866 |
rtmsg_ifa(RTM_NEWADDR, ifa, nlh, NETLINK_CB(skb).portid); |
5c766d642 ipv4: introduce a... |
867 868 |
} return 0; |
1da177e4c Linux-2.6.12-rc2 |
869 870 871 872 873 |
} /* * Determine a default network mask, based on the IP address. */ |
40384999d ipv4: change inet... |
874 |
static int inet_abc_len(__be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
875 876 |
{ int rc = -1; /* Something else, probably a multicast. */ |
f97c1e0c6 [IPV4] net/ipv4: ... |
877 |
if (ipv4_is_zeronet(addr)) |
e905a9eda [NET] IPV4: Fix w... |
878 |
rc = 0; |
1da177e4c Linux-2.6.12-rc2 |
879 |
else { |
714e85be3 [IPV6]: Assorted ... |
880 |
__u32 haddr = ntohl(addr); |
1da177e4c Linux-2.6.12-rc2 |
881 |
|
714e85be3 [IPV6]: Assorted ... |
882 |
if (IN_CLASSA(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
883 |
rc = 8; |
714e85be3 [IPV6]: Assorted ... |
884 |
else if (IN_CLASSB(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
885 |
rc = 16; |
714e85be3 [IPV6]: Assorted ... |
886 |
else if (IN_CLASSC(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
887 888 |
rc = 24; } |
e905a9eda [NET] IPV4: Fix w... |
889 |
return rc; |
1da177e4c Linux-2.6.12-rc2 |
890 |
} |
e5b13cb10 [NETNS]: Process ... |
891 |
int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg) |
1da177e4c Linux-2.6.12-rc2 |
892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 |
{ struct ifreq ifr; struct sockaddr_in sin_orig; struct sockaddr_in *sin = (struct sockaddr_in *)&ifr.ifr_addr; struct in_device *in_dev; struct in_ifaddr **ifap = NULL; struct in_ifaddr *ifa = NULL; struct net_device *dev; char *colon; int ret = -EFAULT; int tryaddrmatch = 0; /* * Fetch the caller's info block into kernel space */ if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) goto out; ifr.ifr_name[IFNAMSIZ - 1] = 0; /* save original address for comparison */ memcpy(&sin_orig, sin, sizeof(*sin)); colon = strchr(ifr.ifr_name, ':'); if (colon) *colon = 0; |
e5b13cb10 [NETNS]: Process ... |
918 |
dev_load(net, ifr.ifr_name); |
1da177e4c Linux-2.6.12-rc2 |
919 |
|
132adf546 [IPV4]: cleanup |
920 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
921 922 923 924 925 926 927 928 929 930 931 932 933 934 |
case SIOCGIFADDR: /* Get interface address */ case SIOCGIFBRDADDR: /* Get the broadcast address */ case SIOCGIFDSTADDR: /* Get the destination address */ case SIOCGIFNETMASK: /* Get the netmask for the interface */ /* Note that these ioctls will not sleep, so that we do not impose a lock. One day we will be forced to put shlock here (I mean SMP) */ tryaddrmatch = (sin_orig.sin_family == AF_INET); memset(sin, 0, sizeof(*sin)); sin->sin_family = AF_INET; break; case SIOCSIFFLAGS: |
bf5b30b8a net: change retur... |
935 |
ret = -EPERM; |
52e804c6d net: Allow userns... |
936 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1da177e4c Linux-2.6.12-rc2 |
937 938 939 940 941 942 |
goto out; break; case SIOCSIFADDR: /* Set interface address (and family) */ case SIOCSIFBRDADDR: /* Set the broadcast address */ case SIOCSIFDSTADDR: /* Set the destination address */ case SIOCSIFNETMASK: /* Set the netmask for the interface */ |
bf5b30b8a net: change retur... |
943 |
ret = -EPERM; |
52e804c6d net: Allow userns... |
944 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1da177e4c Linux-2.6.12-rc2 |
945 946 947 948 949 950 951 952 953 954 955 956 957 |
goto out; ret = -EINVAL; if (sin->sin_family != AF_INET) goto out; break; default: ret = -EINVAL; goto out; } rtnl_lock(); ret = -ENODEV; |
9f9354b92 net: net/ipv4/dev... |
958 959 |
dev = __dev_get_by_name(net, ifr.ifr_name); if (!dev) |
1da177e4c Linux-2.6.12-rc2 |
960 961 962 963 |
goto done; if (colon) *colon = ':'; |
9f9354b92 net: net/ipv4/dev... |
964 965 |
in_dev = __in_dev_get_rtnl(dev); if (in_dev) { |
1da177e4c Linux-2.6.12-rc2 |
966 967 968 969 970 971 972 973 974 975 |
if (tryaddrmatch) { /* Matthias Andree */ /* compare label and address (4.4BSD style) */ /* note: we only do this for a limited set of ioctls and only if the original address family was AF_INET. This is checked above. */ for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) { if (!strcmp(ifr.ifr_name, ifa->ifa_label) && sin_orig.sin_addr.s_addr == |
6c91afe1a ipv4: Fix erroneo... |
976 |
ifa->ifa_local) { |
1da177e4c Linux-2.6.12-rc2 |
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 |
break; /* found */ } } } /* we didn't get a match, maybe the application is 4.3BSD-style and passed in junk so we fall back to comparing just the label */ if (!ifa) { for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) if (!strcmp(ifr.ifr_name, ifa->ifa_label)) break; } } ret = -EADDRNOTAVAIL; if (!ifa && cmd != SIOCSIFADDR && cmd != SIOCSIFFLAGS) goto done; |
132adf546 [IPV4]: cleanup |
995 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 |
case SIOCGIFADDR: /* Get interface address */ sin->sin_addr.s_addr = ifa->ifa_local; goto rarok; case SIOCGIFBRDADDR: /* Get the broadcast address */ sin->sin_addr.s_addr = ifa->ifa_broadcast; goto rarok; case SIOCGIFDSTADDR: /* Get the destination address */ sin->sin_addr.s_addr = ifa->ifa_address; goto rarok; case SIOCGIFNETMASK: /* Get the netmask for the interface */ sin->sin_addr.s_addr = ifa->ifa_mask; goto rarok; case SIOCSIFFLAGS: if (colon) { ret = -EADDRNOTAVAIL; if (!ifa) break; ret = 0; if (!(ifr.ifr_flags & IFF_UP)) inet_del_ifa(in_dev, ifap, 1); break; } ret = dev_change_flags(dev, ifr.ifr_flags); break; case SIOCSIFADDR: /* Set interface address (and family) */ ret = -EINVAL; if (inet_abc_len(sin->sin_addr.s_addr) < 0) break; if (!ifa) { ret = -ENOBUFS; |
9f9354b92 net: net/ipv4/dev... |
1032 1033 |
ifa = inet_alloc_ifa(); if (!ifa) |
1da177e4c Linux-2.6.12-rc2 |
1034 |
break; |
c7e2e1d72 ipv4: fix NULL ch... |
1035 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 |
if (colon) memcpy(ifa->ifa_label, ifr.ifr_name, IFNAMSIZ); else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); } else { ret = 0; if (ifa->ifa_local == sin->sin_addr.s_addr) break; inet_del_ifa(in_dev, ifap, 0); ifa->ifa_broadcast = 0; |
148f97292 [IPV4]: Reset sco... |
1046 |
ifa->ifa_scope = 0; |
1da177e4c Linux-2.6.12-rc2 |
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
} ifa->ifa_address = ifa->ifa_local = sin->sin_addr.s_addr; if (!(dev->flags & IFF_POINTOPOINT)) { ifa->ifa_prefixlen = inet_abc_len(ifa->ifa_address); ifa->ifa_mask = inet_make_mask(ifa->ifa_prefixlen); if ((dev->flags & IFF_BROADCAST) && ifa->ifa_prefixlen < 31) ifa->ifa_broadcast = ifa->ifa_address | ~ifa->ifa_mask; } else { ifa->ifa_prefixlen = 32; ifa->ifa_mask = inet_make_mask(32); } |
5c766d642 ipv4: introduce a... |
1062 |
set_ifa_lifetime(ifa, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 |
ret = inet_set_ifa(dev, ifa); break; case SIOCSIFBRDADDR: /* Set the broadcast address */ ret = 0; if (ifa->ifa_broadcast != sin->sin_addr.s_addr) { inet_del_ifa(in_dev, ifap, 0); ifa->ifa_broadcast = sin->sin_addr.s_addr; inet_insert_ifa(ifa); } break; case SIOCSIFDSTADDR: /* Set the destination address */ ret = 0; if (ifa->ifa_address == sin->sin_addr.s_addr) break; ret = -EINVAL; if (inet_abc_len(sin->sin_addr.s_addr) < 0) break; ret = 0; inet_del_ifa(in_dev, ifap, 0); ifa->ifa_address = sin->sin_addr.s_addr; inet_insert_ifa(ifa); break; case SIOCSIFNETMASK: /* Set the netmask for the interface */ /* * The mask we set must be legal. */ ret = -EINVAL; if (bad_mask(sin->sin_addr.s_addr, 0)) break; ret = 0; if (ifa->ifa_mask != sin->sin_addr.s_addr) { |
a144ea4b7 [IPV4]: annotate ... |
1098 |
__be32 old_mask = ifa->ifa_mask; |
1da177e4c Linux-2.6.12-rc2 |
1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 |
inet_del_ifa(in_dev, ifap, 0); ifa->ifa_mask = sin->sin_addr.s_addr; ifa->ifa_prefixlen = inet_mask_len(ifa->ifa_mask); /* See if current broadcast address matches * with current netmask, then recalculate * the broadcast address. Otherwise it's a * funny address, so don't touch it since * the user seems to know what (s)he's doing... */ if ((dev->flags & IFF_BROADCAST) && (ifa->ifa_prefixlen < 31) && (ifa->ifa_broadcast == |
dcab5e1ee [IPV4]: Fix setti... |
1112 |
(ifa->ifa_local|~old_mask))) { |
1da177e4c Linux-2.6.12-rc2 |
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 |
ifa->ifa_broadcast = (ifa->ifa_local | ~sin->sin_addr.s_addr); } inet_insert_ifa(ifa); } break; } done: rtnl_unlock(); out: return ret; rarok: rtnl_unlock(); ret = copy_to_user(arg, &ifr, sizeof(struct ifreq)) ? -EFAULT : 0; goto out; } static int inet_gifconf(struct net_device *dev, char __user *buf, int len) { |
e5ed63991 [IPV4]: Replace _... |
1132 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
1da177e4c Linux-2.6.12-rc2 |
1133 1134 1135 |
struct in_ifaddr *ifa; struct ifreq ifr; int done = 0; |
9f9354b92 net: net/ipv4/dev... |
1136 |
if (!in_dev) |
1da177e4c Linux-2.6.12-rc2 |
1137 |
goto out; |
9f9354b92 net: net/ipv4/dev... |
1138 |
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { |
1da177e4c Linux-2.6.12-rc2 |
1139 1140 1141 1142 1143 1144 1145 |
if (!buf) { done += sizeof(ifr); continue; } if (len < (int) sizeof(ifr)) break; memset(&ifr, 0, sizeof(struct ifreq)); |
4299c8a94 net: remove an un... |
1146 |
strcpy(ifr.ifr_name, ifa->ifa_label); |
1da177e4c Linux-2.6.12-rc2 |
1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 |
(*(struct sockaddr_in *)&ifr.ifr_addr).sin_family = AF_INET; (*(struct sockaddr_in *)&ifr.ifr_addr).sin_addr.s_addr = ifa->ifa_local; if (copy_to_user(buf, &ifr, sizeof(struct ifreq))) { done = -EFAULT; break; } buf += sizeof(struct ifreq); len -= sizeof(struct ifreq); done += sizeof(struct ifreq); } out: return done; } |
8b57fd1ec net: Eliminate du... |
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 |
static __be32 in_dev_select_addr(const struct in_device *in_dev, int scope) { for_primary_ifa(in_dev) { if (ifa->ifa_scope != RT_SCOPE_LINK && ifa->ifa_scope <= scope) return ifa->ifa_local; } endfor_ifa(in_dev); return 0; } |
a61ced5d1 [IPV4]: inet_sele... |
1174 |
__be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1175 |
{ |
a61ced5d1 [IPV4]: inet_sele... |
1176 |
__be32 addr = 0; |
1da177e4c Linux-2.6.12-rc2 |
1177 |
struct in_device *in_dev; |
c346dca10 [NET] NETNS: Omit... |
1178 |
struct net *net = dev_net(dev); |
3f2fb9a83 net: l3mdev: addr... |
1179 |
int master_idx; |
1da177e4c Linux-2.6.12-rc2 |
1180 1181 |
rcu_read_lock(); |
e5ed63991 [IPV4]: Replace _... |
1182 |
in_dev = __in_dev_get_rcu(dev); |
1da177e4c Linux-2.6.12-rc2 |
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 |
if (!in_dev) goto no_in_dev; for_primary_ifa(in_dev) { if (ifa->ifa_scope > scope) continue; if (!dst || inet_ifa_match(dst, ifa)) { addr = ifa->ifa_local; break; } if (!addr) addr = ifa->ifa_local; } endfor_ifa(in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1196 1197 |
if (addr) |
c6d14c845 net: Introduce fo... |
1198 |
goto out_unlock; |
9f9354b92 net: net/ipv4/dev... |
1199 |
no_in_dev: |
3f2fb9a83 net: l3mdev: addr... |
1200 |
master_idx = l3mdev_master_ifindex_rcu(dev); |
1da177e4c Linux-2.6.12-rc2 |
1201 |
|
17b693cdd net: l3mdev: pref... |
1202 1203 1204 1205 1206 1207 1208 1209 |
/* For VRFs, the VRF device takes the place of the loopback device, * with addresses on it being preferred. Note in such cases the * loopback device will be among the devices that fail the master_idx * equality check in the loop below. */ if (master_idx && (dev = dev_get_by_index_rcu(net, master_idx)) && (in_dev = __in_dev_get_rcu(dev))) { |
8b57fd1ec net: Eliminate du... |
1210 1211 1212 |
addr = in_dev_select_addr(in_dev, scope); if (addr) goto out_unlock; |
17b693cdd net: l3mdev: pref... |
1213 |
} |
1da177e4c Linux-2.6.12-rc2 |
1214 |
/* Not loopback addresses on loopback should be preferred |
ca9f1fd26 net: spelling fixes |
1215 |
in this case. It is important that lo is the first interface |
1da177e4c Linux-2.6.12-rc2 |
1216 1217 |
in dev_base list. */ |
c6d14c845 net: Introduce fo... |
1218 |
for_each_netdev_rcu(net, dev) { |
3f2fb9a83 net: l3mdev: addr... |
1219 1220 |
if (l3mdev_master_ifindex_rcu(dev) != master_idx) continue; |
9f9354b92 net: net/ipv4/dev... |
1221 1222 |
in_dev = __in_dev_get_rcu(dev); if (!in_dev) |
1da177e4c Linux-2.6.12-rc2 |
1223 |
continue; |
8b57fd1ec net: Eliminate du... |
1224 1225 1226 |
addr = in_dev_select_addr(in_dev, scope); if (addr) goto out_unlock; |
1da177e4c Linux-2.6.12-rc2 |
1227 |
} |
c6d14c845 net: Introduce fo... |
1228 |
out_unlock: |
1da177e4c Linux-2.6.12-rc2 |
1229 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1230 1231 |
return addr; } |
9f9354b92 net: net/ipv4/dev... |
1232 |
EXPORT_SYMBOL(inet_select_addr); |
1da177e4c Linux-2.6.12-rc2 |
1233 |
|
60cad5da5 [IPV4]: annotate ... |
1234 1235 |
static __be32 confirm_addr_indev(struct in_device *in_dev, __be32 dst, __be32 local, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1236 1237 |
{ int same = 0; |
a144ea4b7 [IPV4]: annotate ... |
1238 |
__be32 addr = 0; |
1da177e4c Linux-2.6.12-rc2 |
1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 |
for_ifa(in_dev) { if (!addr && (local == ifa->ifa_local || !local) && ifa->ifa_scope <= scope) { addr = ifa->ifa_local; if (same) break; } if (!same) { same = (!local || inet_ifa_match(local, ifa)) && (!dst || inet_ifa_match(dst, ifa)); if (same && addr) { if (local || !dst) break; /* Is the selected addr into dst subnet? */ if (inet_ifa_match(addr, ifa)) break; /* No, then can we use new local src? */ if (ifa->ifa_scope <= scope) { addr = ifa->ifa_local; break; } /* search for large dst subnet for addr */ same = 0; } } } endfor_ifa(in_dev); |
9f9354b92 net: net/ipv4/dev... |
1267 |
return same ? addr : 0; |
1da177e4c Linux-2.6.12-rc2 |
1268 1269 1270 1271 |
} /* * Confirm that local IP address exists using wildcards: |
b601fa197 ipv4: fix wildcar... |
1272 1273 |
* - net: netns to check, cannot be NULL * - in_dev: only on this interface, NULL=any interface |
1da177e4c Linux-2.6.12-rc2 |
1274 1275 1276 1277 |
* - dst: only in the same subnet as dst, 0=any dst * - local: address, 0=autoselect the local address * - scope: maximum allowed scope value for the local address */ |
b601fa197 ipv4: fix wildcar... |
1278 |
__be32 inet_confirm_addr(struct net *net, struct in_device *in_dev, |
9bd85e326 [IPV4]: Remove ex... |
1279 |
__be32 dst, __be32 local, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1280 |
{ |
60cad5da5 [IPV4]: annotate ... |
1281 |
__be32 addr = 0; |
9bd85e326 [IPV4]: Remove ex... |
1282 |
struct net_device *dev; |
1da177e4c Linux-2.6.12-rc2 |
1283 |
|
00db41243 ipv4: coding styl... |
1284 |
if (in_dev) |
9bd85e326 [IPV4]: Remove ex... |
1285 |
return confirm_addr_indev(in_dev, dst, local, scope); |
1da177e4c Linux-2.6.12-rc2 |
1286 |
|
1da177e4c Linux-2.6.12-rc2 |
1287 |
rcu_read_lock(); |
c6d14c845 net: Introduce fo... |
1288 |
for_each_netdev_rcu(net, dev) { |
9f9354b92 net: net/ipv4/dev... |
1289 1290 |
in_dev = __in_dev_get_rcu(dev); if (in_dev) { |
1da177e4c Linux-2.6.12-rc2 |
1291 1292 1293 1294 1295 1296 |
addr = confirm_addr_indev(in_dev, dst, local, scope); if (addr) break; } } rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1297 1298 1299 |
return addr; } |
eaddcd769 bonding: remove e... |
1300 |
EXPORT_SYMBOL(inet_confirm_addr); |
1da177e4c Linux-2.6.12-rc2 |
1301 1302 1303 1304 1305 1306 1307 |
/* * Device notifier */ int register_inetaddr_notifier(struct notifier_block *nb) { |
e041c6834 [PATCH] Notifier ... |
1308 |
return blocking_notifier_chain_register(&inetaddr_chain, nb); |
1da177e4c Linux-2.6.12-rc2 |
1309 |
} |
9f9354b92 net: net/ipv4/dev... |
1310 |
EXPORT_SYMBOL(register_inetaddr_notifier); |
1da177e4c Linux-2.6.12-rc2 |
1311 1312 1313 |
int unregister_inetaddr_notifier(struct notifier_block *nb) { |
e041c6834 [PATCH] Notifier ... |
1314 |
return blocking_notifier_chain_unregister(&inetaddr_chain, nb); |
1da177e4c Linux-2.6.12-rc2 |
1315 |
} |
9f9354b92 net: net/ipv4/dev... |
1316 |
EXPORT_SYMBOL(unregister_inetaddr_notifier); |
1da177e4c Linux-2.6.12-rc2 |
1317 |
|
3ad7d2468 Ipvlan should ret... |
1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 |
int register_inetaddr_validator_notifier(struct notifier_block *nb) { return blocking_notifier_chain_register(&inetaddr_validator_chain, nb); } EXPORT_SYMBOL(register_inetaddr_validator_notifier); int unregister_inetaddr_validator_notifier(struct notifier_block *nb) { return blocking_notifier_chain_unregister(&inetaddr_validator_chain, nb); } EXPORT_SYMBOL(unregister_inetaddr_validator_notifier); |
9f9354b92 net: net/ipv4/dev... |
1330 1331 |
/* Rename ifa_labels for a device name change. Make some effort to preserve * existing alias numbering and to create unique labels if possible. |
1da177e4c Linux-2.6.12-rc2 |
1332 1333 |
*/ static void inetdev_changename(struct net_device *dev, struct in_device *in_dev) |
e905a9eda [NET] IPV4: Fix w... |
1334 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1335 1336 |
struct in_ifaddr *ifa; int named = 0; |
e905a9eda [NET] IPV4: Fix w... |
1337 1338 |
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { char old[IFNAMSIZ], *dot; |
1da177e4c Linux-2.6.12-rc2 |
1339 1340 |
memcpy(old, ifa->ifa_label, IFNAMSIZ); |
e905a9eda [NET] IPV4: Fix w... |
1341 |
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
1da177e4c Linux-2.6.12-rc2 |
1342 |
if (named++ == 0) |
573bf470e ipv4 addr: Send n... |
1343 |
goto skip; |
44344b2a8 [INET]: Fix netde... |
1344 |
dot = strchr(old, ':'); |
51456b291 ipv4: coding styl... |
1345 |
if (!dot) { |
e905a9eda [NET] IPV4: Fix w... |
1346 |
sprintf(old, ":%d", named); |
1da177e4c Linux-2.6.12-rc2 |
1347 1348 |
dot = old; } |
9f9354b92 net: net/ipv4/dev... |
1349 |
if (strlen(dot) + strlen(dev->name) < IFNAMSIZ) |
e905a9eda [NET] IPV4: Fix w... |
1350 |
strcat(ifa->ifa_label, dot); |
9f9354b92 net: net/ipv4/dev... |
1351 |
else |
e905a9eda [NET] IPV4: Fix w... |
1352 |
strcpy(ifa->ifa_label + (IFNAMSIZ - strlen(dot) - 1), dot); |
573bf470e ipv4 addr: Send n... |
1353 1354 |
skip: rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0); |
e905a9eda [NET] IPV4: Fix w... |
1355 1356 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1357 |
|
40384999d ipv4: change inet... |
1358 |
static bool inetdev_valid_mtu(unsigned int mtu) |
06770843c ipv: Re-enable IP... |
1359 |
{ |
57dfc3d10 ipv4: igmp: guard... |
1360 |
return mtu >= IPV4_MIN_MTU; |
06770843c ipv: Re-enable IP... |
1361 |
} |
d11327ad6 arp_notify: uncon... |
1362 1363 1364 1365 |
static void inetdev_send_gratuitous_arp(struct net_device *dev, struct in_device *in_dev) { |
b76d0789c IPv4: Send gratui... |
1366 |
struct in_ifaddr *ifa; |
d11327ad6 arp_notify: uncon... |
1367 |
|
b76d0789c IPv4: Send gratui... |
1368 1369 1370 1371 1372 1373 1374 |
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { arp_send(ARPOP_REQUEST, ETH_P_ARP, ifa->ifa_local, dev, ifa->ifa_local, NULL, dev->dev_addr, NULL); } |
d11327ad6 arp_notify: uncon... |
1375 |
} |
1da177e4c Linux-2.6.12-rc2 |
1376 1377 1378 1379 1380 |
/* Called only under RTNL semaphore */ static int inetdev_event(struct notifier_block *this, unsigned long event, void *ptr) { |
351638e7d net: pass info st... |
1381 |
struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
748e2d939 net: reinstate rt... |
1382 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
0115e8e30 net: remove delay... |
1383 |
|
1da177e4c Linux-2.6.12-rc2 |
1384 1385 1386 |
ASSERT_RTNL(); if (!in_dev) { |
8030f5449 [IPV4] devinet: R... |
1387 |
if (event == NETDEV_REGISTER) { |
1da177e4c Linux-2.6.12-rc2 |
1388 |
in_dev = inetdev_init(dev); |
20e61da7f ipv4: fail early ... |
1389 1390 |
if (IS_ERR(in_dev)) return notifier_from_errno(PTR_ERR(in_dev)); |
0cc217e16 [IPV4]: When poss... |
1391 |
if (dev->flags & IFF_LOOPBACK) { |
42f811b8b [IPV4]: Convert I... |
1392 1393 |
IN_DEV_CONF_SET(in_dev, NOXFRM, 1); IN_DEV_CONF_SET(in_dev, NOPOLICY, 1); |
8030f5449 [IPV4] devinet: R... |
1394 |
} |
06770843c ipv: Re-enable IP... |
1395 1396 1397 1398 |
} else if (event == NETDEV_CHANGEMTU) { /* Re-enabling IP */ if (inetdev_valid_mtu(dev->mtu)) in_dev = inetdev_init(dev); |
1da177e4c Linux-2.6.12-rc2 |
1399 1400 1401 1402 1403 1404 |
} goto out; } switch (event) { case NETDEV_REGISTER: |
91df42bed net: ipv4 and ipv... |
1405 1406 |
pr_debug("%s: bug ", __func__); |
a9b3cd7f3 rcu: convert uses... |
1407 |
RCU_INIT_POINTER(dev->ip_ptr, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1408 1409 |
break; case NETDEV_UP: |
06770843c ipv: Re-enable IP... |
1410 |
if (!inetdev_valid_mtu(dev->mtu)) |
1da177e4c Linux-2.6.12-rc2 |
1411 |
break; |
0cc217e16 [IPV4]: When poss... |
1412 |
if (dev->flags & IFF_LOOPBACK) { |
9f9354b92 net: net/ipv4/dev... |
1413 1414 1415 |
struct in_ifaddr *ifa = inet_alloc_ifa(); if (ifa) { |
fd23c3b31 ipv4: Add hash ta... |
1416 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
1417 1418 1419 1420 1421 1422 1423 1424 |
ifa->ifa_local = ifa->ifa_address = htonl(INADDR_LOOPBACK); ifa->ifa_prefixlen = 8; ifa->ifa_mask = inet_make_mask(8); in_dev_hold(in_dev); ifa->ifa_dev = in_dev; ifa->ifa_scope = RT_SCOPE_HOST; memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
5c766d642 ipv4: introduce a... |
1425 1426 |
set_ifa_lifetime(ifa, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); |
dfd1582d1 ipv4: loopback de... |
1427 1428 |
ipv4_devconf_setall(in_dev); neigh_parms_data_state_setall(in_dev->arp_parms); |
1da177e4c Linux-2.6.12-rc2 |
1429 1430 1431 1432 |
inet_insert_ifa(ifa); } } ip_mc_up(in_dev); |
eefef1cf7 net: add ARP noti... |
1433 1434 |
/* fall through */ case NETDEV_CHANGEADDR: |
d11327ad6 arp_notify: uncon... |
1435 1436 1437 1438 |
if (!IN_DEV_ARP_NOTIFY(in_dev)) break; /* fall through */ case NETDEV_NOTIFY_PEERS: |
a21090cff ipv4: arp_notify ... |
1439 |
/* Send gratuitous ARP to notify of link change */ |
d11327ad6 arp_notify: uncon... |
1440 |
inetdev_send_gratuitous_arp(dev, in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1441 1442 1443 1444 |
break; case NETDEV_DOWN: ip_mc_down(in_dev); break; |
93d9b7d7a net: rename notif... |
1445 |
case NETDEV_PRE_TYPE_CHANGE: |
75c78500d bonding: remap mu... |
1446 1447 |
ip_mc_unmap(in_dev); break; |
93d9b7d7a net: rename notif... |
1448 |
case NETDEV_POST_TYPE_CHANGE: |
75c78500d bonding: remap mu... |
1449 1450 |
ip_mc_remap(in_dev); break; |
1da177e4c Linux-2.6.12-rc2 |
1451 |
case NETDEV_CHANGEMTU: |
06770843c ipv: Re-enable IP... |
1452 |
if (inetdev_valid_mtu(dev->mtu)) |
1da177e4c Linux-2.6.12-rc2 |
1453 |
break; |
06770843c ipv: Re-enable IP... |
1454 |
/* disable IP when MTU is not enough */ |
1da177e4c Linux-2.6.12-rc2 |
1455 1456 1457 1458 1459 1460 1461 1462 |
case NETDEV_UNREGISTER: inetdev_destroy(in_dev); break; case NETDEV_CHANGENAME: /* Do not notify about label change, this event is * not interesting to applications using netlink. */ inetdev_changename(dev, in_dev); |
51602b2a5 [IPV4]: Cleanup s... |
1463 |
devinet_sysctl_unregister(in_dev); |
66f27a520 [IPV4]: Unify and... |
1464 |
devinet_sysctl_register(in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1465 1466 1467 1468 1469 1470 1471 |
break; } out: return NOTIFY_DONE; } static struct notifier_block ip_netdev_notifier = { |
539afedfc net: clean up net... |
1472 |
.notifier_call = inetdev_event, |
1da177e4c Linux-2.6.12-rc2 |
1473 |
}; |
40384999d ipv4: change inet... |
1474 |
static size_t inet_nlmsg_size(void) |
339bf98ff [NETLINK]: Do pre... |
1475 1476 1477 1478 1479 |
{ return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) + nla_total_size(4) /* IFA_ADDRESS */ + nla_total_size(4) /* IFA_LOCAL */ + nla_total_size(4) /* IFA_BROADCAST */ |
ad6c81359 ipv4: add support... |
1480 |
+ nla_total_size(IFNAMSIZ) /* IFA_LABEL */ |
63b5f152e ipv4: Fix runtime... |
1481 1482 |
+ nla_total_size(4) /* IFA_FLAGS */ + nla_total_size(sizeof(struct ifa_cacheinfo)); /* IFA_CACHEINFO */ |
339bf98ff [NETLINK]: Do pre... |
1483 |
} |
5c766d642 ipv4: introduce a... |
1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 |
static inline u32 cstamp_delta(unsigned long cstamp) { return (cstamp - INITIAL_JIFFIES) * 100UL / HZ; } 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); } |
1da177e4c Linux-2.6.12-rc2 |
1501 |
static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa, |
15e473046 netlink: Rename p... |
1502 |
u32 portid, u32 seq, int event, unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1503 1504 1505 |
{ struct ifaddrmsg *ifm; struct nlmsghdr *nlh; |
5c766d642 ipv4: introduce a... |
1506 |
u32 preferred, valid; |
1da177e4c Linux-2.6.12-rc2 |
1507 |
|
15e473046 netlink: Rename p... |
1508 |
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), flags); |
51456b291 ipv4: coding styl... |
1509 |
if (!nlh) |
26932566a [NETLINK]: Don't ... |
1510 |
return -EMSGSIZE; |
47f68512d [IPV4]: Convert a... |
1511 1512 |
ifm = nlmsg_data(nlh); |
1da177e4c Linux-2.6.12-rc2 |
1513 1514 |
ifm->ifa_family = AF_INET; ifm->ifa_prefixlen = ifa->ifa_prefixlen; |
5c766d642 ipv4: introduce a... |
1515 |
ifm->ifa_flags = ifa->ifa_flags; |
1da177e4c Linux-2.6.12-rc2 |
1516 1517 |
ifm->ifa_scope = ifa->ifa_scope; ifm->ifa_index = ifa->ifa_dev->dev->ifindex; |
47f68512d [IPV4]: Convert a... |
1518 |
|
5c766d642 ipv4: introduce a... |
1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 |
if (!(ifm->ifa_flags & IFA_F_PERMANENT)) { preferred = ifa->ifa_preferred_lft; valid = ifa->ifa_valid_lft; if (preferred != INFINITY_LIFE_TIME) { long tval = (jiffies - ifa->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; } |
f3756b79e ipv4: Stop using ... |
1540 |
if ((ifa->ifa_address && |
930345ea6 netlink: implemen... |
1541 |
nla_put_in_addr(skb, IFA_ADDRESS, ifa->ifa_address)) || |
f3756b79e ipv4: Stop using ... |
1542 |
(ifa->ifa_local && |
930345ea6 netlink: implemen... |
1543 |
nla_put_in_addr(skb, IFA_LOCAL, ifa->ifa_local)) || |
f3756b79e ipv4: Stop using ... |
1544 |
(ifa->ifa_broadcast && |
930345ea6 netlink: implemen... |
1545 |
nla_put_in_addr(skb, IFA_BROADCAST, ifa->ifa_broadcast)) || |
f3756b79e ipv4: Stop using ... |
1546 |
(ifa->ifa_label[0] && |
5c766d642 ipv4: introduce a... |
1547 |
nla_put_string(skb, IFA_LABEL, ifa->ifa_label)) || |
ad6c81359 ipv4: add support... |
1548 |
nla_put_u32(skb, IFA_FLAGS, ifa->ifa_flags) || |
5c766d642 ipv4: introduce a... |
1549 1550 |
put_cacheinfo(skb, ifa->ifa_cstamp, ifa->ifa_tstamp, preferred, valid)) |
f3756b79e ipv4: Stop using ... |
1551 |
goto nla_put_failure; |
1da177e4c Linux-2.6.12-rc2 |
1552 |
|
053c095a8 netlink: make nlm... |
1553 1554 |
nlmsg_end(skb, nlh); return 0; |
47f68512d [IPV4]: Convert a... |
1555 1556 |
nla_put_failure: |
26932566a [NETLINK]: Don't ... |
1557 1558 |
nlmsg_cancel(skb, nlh); return -EMSGSIZE; |
1da177e4c Linux-2.6.12-rc2 |
1559 1560 1561 1562 |
} static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { |
3b1e0a655 [NET] NETNS: Omit... |
1563 |
struct net *net = sock_net(skb->sk); |
eec4df988 ipv4: speedup ine... |
1564 1565 1566 |
int h, s_h; int idx, s_idx; int ip_idx, s_ip_idx; |
1da177e4c Linux-2.6.12-rc2 |
1567 1568 1569 |
struct net_device *dev; struct in_device *in_dev; struct in_ifaddr *ifa; |
eec4df988 ipv4: speedup ine... |
1570 |
struct hlist_head *head; |
1da177e4c Linux-2.6.12-rc2 |
1571 |
|
eec4df988 ipv4: speedup ine... |
1572 1573 1574 1575 1576 1577 1578 1579 |
s_h = cb->args[0]; s_idx = idx = cb->args[1]; s_ip_idx = ip_idx = cb->args[2]; for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { idx = 0; head = &net->dev_index_head[h]; rcu_read_lock(); |
0465277f6 ipv4: provide add... |
1580 1581 |
cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^ net->dev_base_seq; |
b67bfe0d4 hlist: drop the n... |
1582 |
hlist_for_each_entry_rcu(dev, head, index_hlist) { |
eec4df988 ipv4: speedup ine... |
1583 1584 |
if (idx < s_idx) goto cont; |
4b97efdf3 net: fix netlink ... |
1585 |
if (h > s_h || idx > s_idx) |
eec4df988 ipv4: speedup ine... |
1586 1587 1588 1589 |
s_ip_idx = 0; in_dev = __in_dev_get_rcu(dev); if (!in_dev) goto cont; |
1da177e4c Linux-2.6.12-rc2 |
1590 |
|
eec4df988 ipv4: speedup ine... |
1591 1592 1593 1594 1595 |
for (ifa = in_dev->ifa_list, ip_idx = 0; ifa; ifa = ifa->ifa_next, ip_idx++) { if (ip_idx < s_ip_idx) continue; if (inet_fill_ifaddr(skb, ifa, |
15e473046 netlink: Rename p... |
1596 |
NETLINK_CB(cb->skb).portid, |
1da177e4c Linux-2.6.12-rc2 |
1597 |
cb->nlh->nlmsg_seq, |
053c095a8 netlink: make nlm... |
1598 |
RTM_NEWADDR, NLM_F_MULTI) < 0) { |
eec4df988 ipv4: speedup ine... |
1599 1600 1601 |
rcu_read_unlock(); goto done; } |
0465277f6 ipv4: provide add... |
1602 |
nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
eec4df988 ipv4: speedup ine... |
1603 |
} |
7562f876c [NET]: Rework dev... |
1604 |
cont: |
eec4df988 ipv4: speedup ine... |
1605 1606 1607 |
idx++; } rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1608 1609 1610 |
} done: |
eec4df988 ipv4: speedup ine... |
1611 1612 1613 |
cb->args[0] = h; cb->args[1] = idx; cb->args[2] = ip_idx; |
1da177e4c Linux-2.6.12-rc2 |
1614 1615 1616 |
return skb->len; } |
539afedfc net: clean up net... |
1617 |
static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh, |
15e473046 netlink: Rename p... |
1618 |
u32 portid) |
1da177e4c Linux-2.6.12-rc2 |
1619 |
{ |
47f68512d [IPV4]: Convert a... |
1620 |
struct sk_buff *skb; |
d6062cbbd [IPv4] address: C... |
1621 1622 |
u32 seq = nlh ? nlh->nlmsg_seq : 0; int err = -ENOBUFS; |
4b8aa9abe [NETNS]: Process ... |
1623 |
struct net *net; |
1da177e4c Linux-2.6.12-rc2 |
1624 |
|
c346dca10 [NET] NETNS: Omit... |
1625 |
net = dev_net(ifa->ifa_dev->dev); |
339bf98ff [NETLINK]: Do pre... |
1626 |
skb = nlmsg_new(inet_nlmsg_size(), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
1627 |
if (!skb) |
d6062cbbd [IPv4] address: C... |
1628 |
goto errout; |
15e473046 netlink: Rename p... |
1629 |
err = inet_fill_ifaddr(skb, ifa, portid, seq, event, 0); |
26932566a [NETLINK]: Don't ... |
1630 1631 1632 1633 1634 1635 |
if (err < 0) { /* -EMSGSIZE implies BUG in inet_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } |
15e473046 netlink: Rename p... |
1636 |
rtnl_notify(skb, net, portid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL); |
1ce85fe40 netlink: change n... |
1637 |
return; |
d6062cbbd [IPv4] address: C... |
1638 1639 |
errout: if (err < 0) |
4b8aa9abe [NETNS]: Process ... |
1640 |
rtnl_set_sk_err(net, RTNLGRP_IPV4_IFADDR, err); |
1da177e4c Linux-2.6.12-rc2 |
1641 |
} |
b1974ed05 netlink: Rightsiz... |
1642 1643 |
static size_t inet_get_link_af_size(const struct net_device *dev, u32 ext_filter_mask) |
9f0f7272a ipv4: AF_INET lin... |
1644 |
{ |
1fc19aff8 net: fix two lock... |
1645 |
struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
9f0f7272a ipv4: AF_INET lin... |
1646 1647 1648 1649 1650 1651 |
if (!in_dev) return 0; return nla_total_size(IPV4_DEVCONF_MAX * 4); /* IFLA_INET_CONF */ } |
d5566fd72 rtnetlink: RTEXT_... |
1652 1653 |
static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev, u32 ext_filter_mask) |
9f0f7272a ipv4: AF_INET lin... |
1654 |
{ |
1fc19aff8 net: fix two lock... |
1655 |
struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
9f0f7272a ipv4: AF_INET lin... |
1656 1657 1658 1659 1660 1661 1662 |
struct nlattr *nla; int i; if (!in_dev) return -ENODATA; nla = nla_reserve(skb, IFLA_INET_CONF, IPV4_DEVCONF_MAX * 4); |
51456b291 ipv4: coding styl... |
1663 |
if (!nla) |
9f0f7272a ipv4: AF_INET lin... |
1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 |
return -EMSGSIZE; for (i = 0; i < IPV4_DEVCONF_MAX; i++) ((u32 *) nla_data(nla))[i] = in_dev->cnf.data[i]; return 0; } static const struct nla_policy inet_af_policy[IFLA_INET_MAX+1] = { [IFLA_INET_CONF] = { .type = NLA_NESTED }, }; |
cf7afbfeb rtnl: make link a... |
1675 1676 |
static int inet_validate_link_af(const struct net_device *dev, const struct nlattr *nla) |
9f0f7272a ipv4: AF_INET lin... |
1677 |
{ |
9f0f7272a ipv4: AF_INET lin... |
1678 1679 |
struct nlattr *a, *tb[IFLA_INET_MAX+1]; int err, rem; |
f7fce74e3 net: kill an RCU ... |
1680 |
if (dev && !__in_dev_get_rtnl(dev)) |
cf7afbfeb rtnl: make link a... |
1681 |
return -EAFNOSUPPORT; |
9f0f7272a ipv4: AF_INET lin... |
1682 |
|
fceb6435e netlink: pass ext... |
1683 |
err = nla_parse_nested(tb, IFLA_INET_MAX, nla, inet_af_policy, NULL); |
9f0f7272a ipv4: AF_INET lin... |
1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 |
if (err < 0) return err; if (tb[IFLA_INET_CONF]) { nla_for_each_nested(a, tb[IFLA_INET_CONF], rem) { int cfgid = nla_type(a); if (nla_len(a) < 4) return -EINVAL; if (cfgid <= 0 || cfgid > IPV4_DEVCONF_MAX) return -EINVAL; } } |
cf7afbfeb rtnl: make link a... |
1698 1699 1700 1701 1702 |
return 0; } static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla) { |
f7fce74e3 net: kill an RCU ... |
1703 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
cf7afbfeb rtnl: make link a... |
1704 1705 1706 1707 1708 |
struct nlattr *a, *tb[IFLA_INET_MAX+1]; int rem; if (!in_dev) return -EAFNOSUPPORT; |
fceb6435e netlink: pass ext... |
1709 |
if (nla_parse_nested(tb, IFLA_INET_MAX, nla, NULL, NULL) < 0) |
cf7afbfeb rtnl: make link a... |
1710 |
BUG(); |
9f0f7272a ipv4: AF_INET lin... |
1711 1712 1713 1714 1715 1716 1717 |
if (tb[IFLA_INET_CONF]) { nla_for_each_nested(a, tb[IFLA_INET_CONF], rem) ipv4_devconf_set(in_dev, nla_type(a), nla_get_u32(a)); } return 0; } |
edc9e7489 rtnl/ipv4: use ne... |
1718 1719 1720 1721 |
static int inet_netconf_msgsize_devconf(int type) { int size = NLMSG_ALIGN(sizeof(struct netconfmsg)) + nla_total_size(4); /* NETCONFA_IFINDEX */ |
136ba622d netconf: add macr... |
1722 |
bool all = false; |
edc9e7489 rtnl/ipv4: use ne... |
1723 |
|
136ba622d netconf: add macr... |
1724 1725 1726 1727 |
if (type == NETCONFA_ALL) all = true; if (all || type == NETCONFA_FORWARDING) |
edc9e7489 rtnl/ipv4: use ne... |
1728 |
size += nla_total_size(4); |
136ba622d netconf: add macr... |
1729 |
if (all || type == NETCONFA_RP_FILTER) |
cc535dfb6 rtnl/ipv4: use ne... |
1730 |
size += nla_total_size(4); |
136ba622d netconf: add macr... |
1731 |
if (all || type == NETCONFA_MC_FORWARDING) |
d67b8c616 netconf: advertis... |
1732 |
size += nla_total_size(4); |
136ba622d netconf: add macr... |
1733 |
if (all || type == NETCONFA_PROXY_NEIGH) |
f085ff1c1 netconf: add prox... |
1734 |
size += nla_total_size(4); |
136ba622d netconf: add macr... |
1735 |
if (all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) |
974d7af5f ipv4: add support... |
1736 |
size += nla_total_size(4); |
edc9e7489 rtnl/ipv4: use ne... |
1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 |
return size; } static int inet_netconf_fill_devconf(struct sk_buff *skb, int ifindex, struct ipv4_devconf *devconf, u32 portid, u32 seq, int event, unsigned int flags, int type) { struct nlmsghdr *nlh; struct netconfmsg *ncm; |
136ba622d netconf: add macr... |
1748 |
bool all = false; |
edc9e7489 rtnl/ipv4: use ne... |
1749 1750 1751 |
nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg), flags); |
51456b291 ipv4: coding styl... |
1752 |
if (!nlh) |
edc9e7489 rtnl/ipv4: use ne... |
1753 |
return -EMSGSIZE; |
136ba622d netconf: add macr... |
1754 1755 |
if (type == NETCONFA_ALL) all = true; |
edc9e7489 rtnl/ipv4: use ne... |
1756 1757 1758 1759 1760 |
ncm = nlmsg_data(nlh); ncm->ncm_family = AF_INET; if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0) goto nla_put_failure; |
b5c9641d3 net: devinet: Add... |
1761 1762 |
if (!devconf) goto out; |
136ba622d netconf: add macr... |
1763 |
if ((all || type == NETCONFA_FORWARDING) && |
edc9e7489 rtnl/ipv4: use ne... |
1764 1765 1766 |
nla_put_s32(skb, NETCONFA_FORWARDING, IPV4_DEVCONF(*devconf, FORWARDING)) < 0) goto nla_put_failure; |
136ba622d netconf: add macr... |
1767 |
if ((all || type == NETCONFA_RP_FILTER) && |
cc535dfb6 rtnl/ipv4: use ne... |
1768 1769 1770 |
nla_put_s32(skb, NETCONFA_RP_FILTER, IPV4_DEVCONF(*devconf, RP_FILTER)) < 0) goto nla_put_failure; |
136ba622d netconf: add macr... |
1771 |
if ((all || type == NETCONFA_MC_FORWARDING) && |
d67b8c616 netconf: advertis... |
1772 1773 1774 |
nla_put_s32(skb, NETCONFA_MC_FORWARDING, IPV4_DEVCONF(*devconf, MC_FORWARDING)) < 0) goto nla_put_failure; |
136ba622d netconf: add macr... |
1775 |
if ((all || type == NETCONFA_PROXY_NEIGH) && |
09aea5df7 netconf: rename P... |
1776 |
nla_put_s32(skb, NETCONFA_PROXY_NEIGH, |
f085ff1c1 netconf: add prox... |
1777 1778 |
IPV4_DEVCONF(*devconf, PROXY_ARP)) < 0) goto nla_put_failure; |
136ba622d netconf: add macr... |
1779 |
if ((all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) && |
974d7af5f ipv4: add support... |
1780 1781 1782 |
nla_put_s32(skb, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, IPV4_DEVCONF(*devconf, IGNORE_ROUTES_WITH_LINKDOWN)) < 0) goto nla_put_failure; |
edc9e7489 rtnl/ipv4: use ne... |
1783 |
|
b5c9641d3 net: devinet: Add... |
1784 |
out: |
053c095a8 netlink: make nlm... |
1785 1786 |
nlmsg_end(skb, nlh); return 0; |
edc9e7489 rtnl/ipv4: use ne... |
1787 1788 1789 1790 1791 |
nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } |
3b0228656 net: devinet: Ref... |
1792 1793 |
void inet_netconf_notify_devconf(struct net *net, int event, int type, int ifindex, struct ipv4_devconf *devconf) |
edc9e7489 rtnl/ipv4: use ne... |
1794 1795 1796 |
{ struct sk_buff *skb; int err = -ENOBUFS; |
fa17806cd ipv4: do not abus... |
1797 |
skb = nlmsg_new(inet_netconf_msgsize_devconf(type), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
1798 |
if (!skb) |
edc9e7489 rtnl/ipv4: use ne... |
1799 1800 1801 |
goto errout; err = inet_netconf_fill_devconf(skb, ifindex, devconf, 0, 0, |
3b0228656 net: devinet: Ref... |
1802 |
event, 0, type); |
edc9e7489 rtnl/ipv4: use ne... |
1803 1804 1805 1806 1807 1808 |
if (err < 0) { /* -EMSGSIZE implies BUG in inet_netconf_msgsize_devconf() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } |
fa17806cd ipv4: do not abus... |
1809 |
rtnl_notify(skb, net, 0, RTNLGRP_IPV4_NETCONF, NULL, GFP_KERNEL); |
edc9e7489 rtnl/ipv4: use ne... |
1810 1811 1812 1813 1814 |
return; errout: if (err < 0) rtnl_set_sk_err(net, RTNLGRP_IPV4_NETCONF, err); } |
9e5511106 rtnl/ipv4: add su... |
1815 1816 1817 |
static const struct nla_policy devconf_ipv4_policy[NETCONFA_MAX+1] = { [NETCONFA_IFINDEX] = { .len = sizeof(int) }, [NETCONFA_FORWARDING] = { .len = sizeof(int) }, |
cc535dfb6 rtnl/ipv4: use ne... |
1818 |
[NETCONFA_RP_FILTER] = { .len = sizeof(int) }, |
09aea5df7 netconf: rename P... |
1819 |
[NETCONFA_PROXY_NEIGH] = { .len = sizeof(int) }, |
974d7af5f ipv4: add support... |
1820 |
[NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN] = { .len = sizeof(int) }, |
9e5511106 rtnl/ipv4: add su... |
1821 1822 1823 |
}; static int inet_netconf_get_devconf(struct sk_buff *in_skb, |
c21ef3e34 net: rtnetlink: p... |
1824 1825 |
struct nlmsghdr *nlh, struct netlink_ext_ack *extack) |
9e5511106 rtnl/ipv4: add su... |
1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 |
{ struct net *net = sock_net(in_skb->sk); struct nlattr *tb[NETCONFA_MAX+1]; struct netconfmsg *ncm; struct sk_buff *skb; struct ipv4_devconf *devconf; struct in_device *in_dev; struct net_device *dev; int ifindex; int err; err = nlmsg_parse(nlh, sizeof(*ncm), tb, NETCONFA_MAX, |
c21ef3e34 net: rtnetlink: p... |
1838 |
devconf_ipv4_policy, extack); |
9e5511106 rtnl/ipv4: add su... |
1839 1840 |
if (err < 0) goto errout; |
a97eb33ff rtnl: RTM_GETNETC... |
1841 |
err = -EINVAL; |
9e5511106 rtnl/ipv4: add su... |
1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 |
if (!tb[NETCONFA_IFINDEX]) goto errout; ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]); switch (ifindex) { case NETCONFA_IFINDEX_ALL: devconf = net->ipv4.devconf_all; break; case NETCONFA_IFINDEX_DEFAULT: devconf = net->ipv4.devconf_dflt; break; default: dev = __dev_get_by_index(net, ifindex); |
51456b291 ipv4: coding styl... |
1855 |
if (!dev) |
9e5511106 rtnl/ipv4: add su... |
1856 1857 |
goto errout; in_dev = __in_dev_get_rtnl(dev); |
51456b291 ipv4: coding styl... |
1858 |
if (!in_dev) |
9e5511106 rtnl/ipv4: add su... |
1859 1860 1861 1862 1863 1864 |
goto errout; devconf = &in_dev->cnf; break; } err = -ENOBUFS; |
fa17806cd ipv4: do not abus... |
1865 |
skb = nlmsg_new(inet_netconf_msgsize_devconf(NETCONFA_ALL), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
1866 |
if (!skb) |
9e5511106 rtnl/ipv4: add su... |
1867 1868 1869 1870 1871 |
goto errout; err = inet_netconf_fill_devconf(skb, ifindex, devconf, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWNETCONF, 0, |
136ba622d netconf: add macr... |
1872 |
NETCONFA_ALL); |
9e5511106 rtnl/ipv4: add su... |
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 |
if (err < 0) { /* -EMSGSIZE implies BUG in inet_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; } |
7a6742003 netconf: add the ... |
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 |
static int inet_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 in_device *in_dev; 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(); |
0465277f6 ipv4: provide add... |
1900 1901 |
cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^ net->dev_base_seq; |
7a6742003 netconf: add the ... |
1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 |
hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; in_dev = __in_dev_get_rcu(dev); if (!in_dev) goto cont; if (inet_netconf_fill_devconf(skb, dev->ifindex, &in_dev->cnf, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, |
136ba622d netconf: add macr... |
1915 |
NETCONFA_ALL) < 0) { |
7a6742003 netconf: add the ... |
1916 1917 1918 |
rcu_read_unlock(); goto done; } |
0465277f6 ipv4: provide add... |
1919 |
nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
7a6742003 netconf: add the ... |
1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 |
cont: idx++; } rcu_read_unlock(); } if (h == NETDEV_HASHENTRIES) { if (inet_netconf_fill_devconf(skb, NETCONFA_IFINDEX_ALL, net->ipv4.devconf_all, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, |
136ba622d netconf: add macr... |
1931 |
NETCONFA_ALL) < 0) |
7a6742003 netconf: add the ... |
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 |
goto done; else h++; } if (h == NETDEV_HASHENTRIES + 1) { if (inet_netconf_fill_devconf(skb, NETCONFA_IFINDEX_DEFAULT, net->ipv4.devconf_dflt, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNETCONF, NLM_F_MULTI, |
136ba622d netconf: add macr... |
1942 |
NETCONFA_ALL) < 0) |
7a6742003 netconf: add the ... |
1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 |
goto done; else h++; } done: cb->args[0] = h; cb->args[1] = idx; return skb->len; } |
1da177e4c Linux-2.6.12-rc2 |
1953 |
#ifdef CONFIG_SYSCTL |
c0ce9fb30 [IPV4]: Store the... |
1954 |
static void devinet_copy_dflt_conf(struct net *net, int i) |
31be30854 [IPV4]: Add defau... |
1955 1956 |
{ struct net_device *dev; |
c6d14c845 net: Introduce fo... |
1957 1958 |
rcu_read_lock(); for_each_netdev_rcu(net, dev) { |
31be30854 [IPV4]: Add defau... |
1959 |
struct in_device *in_dev; |
c6d14c845 net: Introduce fo... |
1960 |
|
31be30854 [IPV4]: Add defau... |
1961 1962 |
in_dev = __in_dev_get_rcu(dev); if (in_dev && !test_bit(i, in_dev->cnf.state)) |
9355bbd68 [IPV4]: Switch us... |
1963 |
in_dev->cnf.data[i] = net->ipv4.devconf_dflt->data[i]; |
31be30854 [IPV4]: Add defau... |
1964 |
} |
c6d14c845 net: Introduce fo... |
1965 |
rcu_read_unlock(); |
31be30854 [IPV4]: Add defau... |
1966 |
} |
c6d14c845 net: Introduce fo... |
1967 |
/* called with RTNL locked */ |
c0ce9fb30 [IPV4]: Store the... |
1968 |
static void inet_forward_change(struct net *net) |
68dd299bc [INET]: Merge sys... |
1969 1970 |
{ struct net_device *dev; |
586f12115 [IPV4]: Switch us... |
1971 |
int on = IPV4_DEVCONF_ALL(net, FORWARDING); |
68dd299bc [INET]: Merge sys... |
1972 |
|
586f12115 [IPV4]: Switch us... |
1973 |
IPV4_DEVCONF_ALL(net, ACCEPT_REDIRECTS) = !on; |
9355bbd68 [IPV4]: Switch us... |
1974 |
IPV4_DEVCONF_DFLT(net, FORWARDING) = on; |
3b0228656 net: devinet: Ref... |
1975 1976 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_FORWARDING, |
edc9e7489 rtnl/ipv4: use ne... |
1977 1978 |
NETCONFA_IFINDEX_ALL, net->ipv4.devconf_all); |
3b0228656 net: devinet: Ref... |
1979 1980 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_FORWARDING, |
edc9e7489 rtnl/ipv4: use ne... |
1981 1982 |
NETCONFA_IFINDEX_DEFAULT, net->ipv4.devconf_dflt); |
68dd299bc [INET]: Merge sys... |
1983 |
|
c0ce9fb30 [IPV4]: Store the... |
1984 |
for_each_netdev(net, dev) { |
68dd299bc [INET]: Merge sys... |
1985 |
struct in_device *in_dev; |
fa17806cd ipv4: do not abus... |
1986 |
|
0187bdfb0 net: Disable LRO ... |
1987 1988 |
if (on) dev_disable_lro(dev); |
fa17806cd ipv4: do not abus... |
1989 1990 |
in_dev = __in_dev_get_rtnl(dev); |
edc9e7489 rtnl/ipv4: use ne... |
1991 |
if (in_dev) { |
68dd299bc [INET]: Merge sys... |
1992 |
IN_DEV_CONF_SET(in_dev, FORWARDING, on); |
3b0228656 net: devinet: Ref... |
1993 1994 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_FORWARDING, |
edc9e7489 rtnl/ipv4: use ne... |
1995 1996 |
dev->ifindex, &in_dev->cnf); } |
68dd299bc [INET]: Merge sys... |
1997 |
} |
68dd299bc [INET]: Merge sys... |
1998 |
} |
f085ff1c1 netconf: add prox... |
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 |
static int devinet_conf_ifindex(struct net *net, struct ipv4_devconf *cnf) { if (cnf == net->ipv4.devconf_dflt) return NETCONFA_IFINDEX_DEFAULT; else if (cnf == net->ipv4.devconf_all) return NETCONFA_IFINDEX_ALL; else { struct in_device *idev = container_of(cnf, struct in_device, cnf); return idev->dev->ifindex; } } |
fe2c6338f net: Convert uses... |
2011 |
static int devinet_conf_proc(struct ctl_table *ctl, int write, |
8d65af789 sysctl: remove "s... |
2012 |
void __user *buffer, |
31be30854 [IPV4]: Add defau... |
2013 2014 |
size_t *lenp, loff_t *ppos) { |
d01ff0a04 ipv4: flush route... |
2015 |
int old_value = *(int *)ctl->data; |
8d65af789 sysctl: remove "s... |
2016 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
d01ff0a04 ipv4: flush route... |
2017 |
int new_value = *(int *)ctl->data; |
31be30854 [IPV4]: Add defau... |
2018 2019 2020 |
if (write) { struct ipv4_devconf *cnf = ctl->extra1; |
c0ce9fb30 [IPV4]: Store the... |
2021 |
struct net *net = ctl->extra2; |
31be30854 [IPV4]: Add defau... |
2022 |
int i = (int *)ctl->data - cnf->data; |
f085ff1c1 netconf: add prox... |
2023 |
int ifindex; |
31be30854 [IPV4]: Add defau... |
2024 2025 |
set_bit(i, cnf->state); |
9355bbd68 [IPV4]: Switch us... |
2026 |
if (cnf == net->ipv4.devconf_dflt) |
c0ce9fb30 [IPV4]: Store the... |
2027 |
devinet_copy_dflt_conf(net, i); |
d0daebc3d ipv4: Add interfa... |
2028 2029 |
if (i == IPV4_DEVCONF_ACCEPT_LOCAL - 1 || i == IPV4_DEVCONF_ROUTE_LOCALNET - 1) |
d01ff0a04 ipv4: flush route... |
2030 |
if ((new_value == 0) && (old_value != 0)) |
4ccfe6d41 ipv4/route: arg d... |
2031 |
rt_cache_flush(net); |
f085ff1c1 netconf: add prox... |
2032 |
|
cc535dfb6 rtnl/ipv4: use ne... |
2033 2034 |
if (i == IPV4_DEVCONF_RP_FILTER - 1 && new_value != old_value) { |
f085ff1c1 netconf: add prox... |
2035 |
ifindex = devinet_conf_ifindex(net, cnf); |
3b0228656 net: devinet: Ref... |
2036 2037 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_RP_FILTER, |
cc535dfb6 rtnl/ipv4: use ne... |
2038 2039 |
ifindex, cnf); } |
f085ff1c1 netconf: add prox... |
2040 2041 2042 |
if (i == IPV4_DEVCONF_PROXY_ARP - 1 && new_value != old_value) { ifindex = devinet_conf_ifindex(net, cnf); |
3b0228656 net: devinet: Ref... |
2043 2044 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_PROXY_NEIGH, |
f085ff1c1 netconf: add prox... |
2045 2046 |
ifindex, cnf); } |
974d7af5f ipv4: add support... |
2047 2048 2049 |
if (i == IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN - 1 && new_value != old_value) { ifindex = devinet_conf_ifindex(net, cnf); |
3b0228656 net: devinet: Ref... |
2050 2051 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, |
974d7af5f ipv4: add support... |
2052 2053 |
ifindex, cnf); } |
31be30854 [IPV4]: Add defau... |
2054 2055 2056 2057 |
} return ret; } |
fe2c6338f net: Convert uses... |
2058 |
static int devinet_sysctl_forward(struct ctl_table *ctl, int write, |
8d65af789 sysctl: remove "s... |
2059 |
void __user *buffer, |
1da177e4c Linux-2.6.12-rc2 |
2060 2061 2062 2063 |
size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; |
88af182e3 net: Fix sysctl r... |
2064 |
loff_t pos = *ppos; |
8d65af789 sysctl: remove "s... |
2065 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4c Linux-2.6.12-rc2 |
2066 2067 |
if (write && *valp != val) { |
c0ce9fb30 [IPV4]: Store the... |
2068 |
struct net *net = ctl->extra2; |
0187bdfb0 net: Disable LRO ... |
2069 |
if (valp != &IPV4_DEVCONF_DFLT(net, FORWARDING)) { |
88af182e3 net: Fix sysctl r... |
2070 2071 2072 2073 |
if (!rtnl_trylock()) { /* Restore the original values before restarting */ *valp = val; *ppos = pos; |
9b8adb5ea net: Fix devinet_... |
2074 |
return restart_syscall(); |
88af182e3 net: Fix sysctl r... |
2075 |
} |
0187bdfb0 net: Disable LRO ... |
2076 2077 |
if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING)) { inet_forward_change(net); |
edc9e7489 rtnl/ipv4: use ne... |
2078 |
} else { |
0187bdfb0 net: Disable LRO ... |
2079 2080 2081 |
struct ipv4_devconf *cnf = ctl->extra1; struct in_device *idev = container_of(cnf, struct in_device, cnf); |
edc9e7489 rtnl/ipv4: use ne... |
2082 2083 |
if (*valp) dev_disable_lro(idev->dev); |
3b0228656 net: devinet: Ref... |
2084 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, |
edc9e7489 rtnl/ipv4: use ne... |
2085 2086 2087 |
NETCONFA_FORWARDING, idev->dev->ifindex, cnf); |
0187bdfb0 net: Disable LRO ... |
2088 2089 |
} rtnl_unlock(); |
4ccfe6d41 ipv4/route: arg d... |
2090 |
rt_cache_flush(net); |
edc9e7489 rtnl/ipv4: use ne... |
2091 |
} else |
3b0228656 net: devinet: Ref... |
2092 2093 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_FORWARDING, |
edc9e7489 rtnl/ipv4: use ne... |
2094 2095 |
NETCONFA_IFINDEX_DEFAULT, net->ipv4.devconf_dflt); |
1da177e4c Linux-2.6.12-rc2 |
2096 2097 2098 2099 |
} return ret; } |
fe2c6338f net: Convert uses... |
2100 |
static int ipv4_doint_and_flush(struct ctl_table *ctl, int write, |
323e126f0 ipv4: Don't pre-s... |
2101 2102 |
void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
2103 2104 2105 |
{ int *valp = ctl->data; int val = *valp; |
8d65af789 sysctl: remove "s... |
2106 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
76e6ebfb4 netns: add namesp... |
2107 |
struct net *net = ctl->extra2; |
1da177e4c Linux-2.6.12-rc2 |
2108 2109 |
if (write && *valp != val) |
4ccfe6d41 ipv4/route: arg d... |
2110 |
rt_cache_flush(net); |
1da177e4c Linux-2.6.12-rc2 |
2111 2112 2113 |
return ret; } |
f8572d8f2 sysctl net: Remov... |
2114 |
#define DEVINET_SYSCTL_ENTRY(attr, name, mval, proc) \ |
42f811b8b [IPV4]: Convert I... |
2115 |
{ \ |
42f811b8b [IPV4]: Convert I... |
2116 2117 |
.procname = name, \ .data = ipv4_devconf.data + \ |
02291680f net ipv4: Decoupl... |
2118 |
IPV4_DEVCONF_ ## attr - 1, \ |
42f811b8b [IPV4]: Convert I... |
2119 2120 2121 |
.maxlen = sizeof(int), \ .mode = mval, \ .proc_handler = proc, \ |
31be30854 [IPV4]: Add defau... |
2122 |
.extra1 = &ipv4_devconf, \ |
42f811b8b [IPV4]: Convert I... |
2123 2124 2125 |
} #define DEVINET_SYSCTL_RW_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
2126 |
DEVINET_SYSCTL_ENTRY(attr, name, 0644, devinet_conf_proc) |
42f811b8b [IPV4]: Convert I... |
2127 2128 |
#define DEVINET_SYSCTL_RO_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
2129 |
DEVINET_SYSCTL_ENTRY(attr, name, 0444, devinet_conf_proc) |
42f811b8b [IPV4]: Convert I... |
2130 |
|
f8572d8f2 sysctl net: Remov... |
2131 2132 |
#define DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, proc) \ DEVINET_SYSCTL_ENTRY(attr, name, 0644, proc) |
42f811b8b [IPV4]: Convert I... |
2133 2134 |
#define DEVINET_SYSCTL_FLUSHING_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
2135 |
DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, ipv4_doint_and_flush) |
42f811b8b [IPV4]: Convert I... |
2136 |
|
1da177e4c Linux-2.6.12-rc2 |
2137 2138 |
static struct devinet_sysctl_table { struct ctl_table_header *sysctl_header; |
02291680f net ipv4: Decoupl... |
2139 |
struct ctl_table devinet_vars[__IPV4_DEVCONF_MAX]; |
1da177e4c Linux-2.6.12-rc2 |
2140 2141 |
} devinet_sysctl = { .devinet_vars = { |
42f811b8b [IPV4]: Convert I... |
2142 |
DEVINET_SYSCTL_COMPLEX_ENTRY(FORWARDING, "forwarding", |
f8572d8f2 sysctl net: Remov... |
2143 |
devinet_sysctl_forward), |
42f811b8b [IPV4]: Convert I... |
2144 2145 2146 2147 2148 2149 2150 2151 2152 |
DEVINET_SYSCTL_RO_ENTRY(MC_FORWARDING, "mc_forwarding"), DEVINET_SYSCTL_RW_ENTRY(ACCEPT_REDIRECTS, "accept_redirects"), DEVINET_SYSCTL_RW_ENTRY(SECURE_REDIRECTS, "secure_redirects"), DEVINET_SYSCTL_RW_ENTRY(SHARED_MEDIA, "shared_media"), DEVINET_SYSCTL_RW_ENTRY(RP_FILTER, "rp_filter"), DEVINET_SYSCTL_RW_ENTRY(SEND_REDIRECTS, "send_redirects"), DEVINET_SYSCTL_RW_ENTRY(ACCEPT_SOURCE_ROUTE, "accept_source_route"), |
8153a10c0 ipv4 05/05: add s... |
2153 |
DEVINET_SYSCTL_RW_ENTRY(ACCEPT_LOCAL, "accept_local"), |
28f6aeea3 net: restore ip s... |
2154 |
DEVINET_SYSCTL_RW_ENTRY(SRC_VMARK, "src_valid_mark"), |
42f811b8b [IPV4]: Convert I... |
2155 2156 2157 2158 2159 2160 2161 2162 2163 |
DEVINET_SYSCTL_RW_ENTRY(PROXY_ARP, "proxy_arp"), DEVINET_SYSCTL_RW_ENTRY(MEDIUM_ID, "medium_id"), DEVINET_SYSCTL_RW_ENTRY(BOOTP_RELAY, "bootp_relay"), DEVINET_SYSCTL_RW_ENTRY(LOG_MARTIANS, "log_martians"), DEVINET_SYSCTL_RW_ENTRY(TAG, "tag"), DEVINET_SYSCTL_RW_ENTRY(ARPFILTER, "arp_filter"), DEVINET_SYSCTL_RW_ENTRY(ARP_ANNOUNCE, "arp_announce"), DEVINET_SYSCTL_RW_ENTRY(ARP_IGNORE, "arp_ignore"), DEVINET_SYSCTL_RW_ENTRY(ARP_ACCEPT, "arp_accept"), |
eefef1cf7 net: add ARP noti... |
2164 |
DEVINET_SYSCTL_RW_ENTRY(ARP_NOTIFY, "arp_notify"), |
65324144b net: RFC3069, pri... |
2165 |
DEVINET_SYSCTL_RW_ENTRY(PROXY_ARP_PVLAN, "proxy_arp_pvlan"), |
5c6fe01c1 net: igmp: Don't ... |
2166 2167 |
DEVINET_SYSCTL_RW_ENTRY(FORCE_IGMP_VERSION, "force_igmp_version"), |
2690048c0 net: igmp: Allow ... |
2168 2169 2170 2171 |
DEVINET_SYSCTL_RW_ENTRY(IGMPV2_UNSOLICITED_REPORT_INTERVAL, "igmpv2_unsolicited_report_interval"), DEVINET_SYSCTL_RW_ENTRY(IGMPV3_UNSOLICITED_REPORT_INTERVAL, "igmpv3_unsolicited_report_interval"), |
0eeb075fa net: ipv4 sysctl ... |
2172 2173 |
DEVINET_SYSCTL_RW_ENTRY(IGNORE_ROUTES_WITH_LINKDOWN, "ignore_routes_with_linkdown"), |
97daf3314 ipv4: add option ... |
2174 2175 |
DEVINET_SYSCTL_RW_ENTRY(DROP_GRATUITOUS_ARP, "drop_gratuitous_arp"), |
42f811b8b [IPV4]: Convert I... |
2176 2177 2178 |
DEVINET_SYSCTL_FLUSHING_ENTRY(NOXFRM, "disable_xfrm"), DEVINET_SYSCTL_FLUSHING_ENTRY(NOPOLICY, "disable_policy"), |
42f811b8b [IPV4]: Convert I... |
2179 2180 |
DEVINET_SYSCTL_FLUSHING_ENTRY(PROMOTE_SECONDARIES, "promote_secondaries"), |
d0daebc3d ipv4: Add interfa... |
2181 2182 |
DEVINET_SYSCTL_FLUSHING_ENTRY(ROUTE_LOCALNET, "route_localnet"), |
12b74dfad ipv4: add option ... |
2183 2184 |
DEVINET_SYSCTL_FLUSHING_ENTRY(DROP_UNICAST_IN_L2_MULTICAST, "drop_unicast_in_l2_multicast"), |
1da177e4c Linux-2.6.12-rc2 |
2185 |
}, |
1da177e4c Linux-2.6.12-rc2 |
2186 |
}; |
ea40b324d [IPV4]: Make __de... |
2187 |
static int __devinet_sysctl_register(struct net *net, char *dev_name, |
29c994e36 netconf: add a no... |
2188 |
int ifindex, struct ipv4_devconf *p) |
1da177e4c Linux-2.6.12-rc2 |
2189 2190 |
{ int i; |
9fa896429 [IPV4]: Cleanup t... |
2191 |
struct devinet_sysctl_table *t; |
8607ddb86 net ipv4: Convert... |
2192 |
char path[sizeof("net/ipv4/conf/") + IFNAMSIZ]; |
bfada697b [IPV4]: Use ctl p... |
2193 |
|
9fa896429 [IPV4]: Cleanup t... |
2194 |
t = kmemdup(&devinet_sysctl, sizeof(*t), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2195 |
if (!t) |
9fa896429 [IPV4]: Cleanup t... |
2196 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2197 2198 |
for (i = 0; i < ARRAY_SIZE(t->devinet_vars) - 1; i++) { t->devinet_vars[i].data += (char *)p - (char *)&ipv4_devconf; |
31be30854 [IPV4]: Add defau... |
2199 |
t->devinet_vars[i].extra1 = p; |
c0ce9fb30 [IPV4]: Store the... |
2200 |
t->devinet_vars[i].extra2 = net; |
1da177e4c Linux-2.6.12-rc2 |
2201 |
} |
8607ddb86 net ipv4: Convert... |
2202 |
snprintf(path, sizeof(path), "net/ipv4/conf/%s", dev_name); |
1da177e4c Linux-2.6.12-rc2 |
2203 |
|
8607ddb86 net ipv4: Convert... |
2204 |
t->sysctl_header = register_net_sysctl(net, path, t->devinet_vars); |
1da177e4c Linux-2.6.12-rc2 |
2205 |
if (!t->sysctl_header) |
8607ddb86 net ipv4: Convert... |
2206 |
goto free; |
1da177e4c Linux-2.6.12-rc2 |
2207 2208 |
p->sysctl = t; |
29c994e36 netconf: add a no... |
2209 |
|
3b0228656 net: devinet: Ref... |
2210 2211 |
inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_ALL, ifindex, p); |
ea40b324d [IPV4]: Make __de... |
2212 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
2213 |
|
9fa896429 [IPV4]: Cleanup t... |
2214 |
free: |
1da177e4c Linux-2.6.12-rc2 |
2215 |
kfree(t); |
9fa896429 [IPV4]: Cleanup t... |
2216 |
out: |
ea40b324d [IPV4]: Make __de... |
2217 |
return -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
2218 |
} |
b5c9641d3 net: devinet: Add... |
2219 2220 |
static void __devinet_sysctl_unregister(struct net *net, struct ipv4_devconf *cnf, int ifindex) |
51602b2a5 [IPV4]: Cleanup s... |
2221 2222 |
{ struct devinet_sysctl_table *t = cnf->sysctl; |
b5c9641d3 net: devinet: Add... |
2223 2224 2225 2226 2227 |
if (t) { cnf->sysctl = NULL; unregister_net_sysctl_table(t->sysctl_header); kfree(t); } |
51602b2a5 [IPV4]: Cleanup s... |
2228 |
|
b5c9641d3 net: devinet: Add... |
2229 |
inet_netconf_notify_devconf(net, RTM_DELNETCONF, 0, ifindex, NULL); |
51602b2a5 [IPV4]: Cleanup s... |
2230 |
} |
20e61da7f ipv4: fail early ... |
2231 |
static int devinet_sysctl_register(struct in_device *idev) |
66f27a520 [IPV4]: Unify and... |
2232 |
{ |
20e61da7f ipv4: fail early ... |
2233 2234 2235 2236 2237 2238 2239 2240 2241 |
int err; if (!sysctl_dev_name_is_allowed(idev->dev->name)) return -EINVAL; err = neigh_sysctl_register(idev->dev, idev->arp_parms, NULL); if (err) return err; err = __devinet_sysctl_register(dev_net(idev->dev), idev->dev->name, |
29c994e36 netconf: add a no... |
2242 |
idev->dev->ifindex, &idev->cnf); |
20e61da7f ipv4: fail early ... |
2243 2244 2245 |
if (err) neigh_sysctl_unregister(idev->arp_parms); return err; |
66f27a520 [IPV4]: Unify and... |
2246 |
} |
51602b2a5 [IPV4]: Cleanup s... |
2247 |
static void devinet_sysctl_unregister(struct in_device *idev) |
1da177e4c Linux-2.6.12-rc2 |
2248 |
{ |
b5c9641d3 net: devinet: Add... |
2249 2250 2251 |
struct net *net = dev_net(idev->dev); __devinet_sysctl_unregister(net, &idev->cnf, idev->dev->ifindex); |
51602b2a5 [IPV4]: Cleanup s... |
2252 |
neigh_sysctl_unregister(idev->arp_parms); |
1da177e4c Linux-2.6.12-rc2 |
2253 |
} |
1da177e4c Linux-2.6.12-rc2 |
2254 |
|
68dd299bc [INET]: Merge sys... |
2255 2256 |
static struct ctl_table ctl_forward_entry[] = { { |
68dd299bc [INET]: Merge sys... |
2257 2258 |
.procname = "ip_forward", .data = &ipv4_devconf.data[ |
02291680f net ipv4: Decoupl... |
2259 |
IPV4_DEVCONF_FORWARDING - 1], |
68dd299bc [INET]: Merge sys... |
2260 2261 2262 |
.maxlen = sizeof(int), .mode = 0644, .proc_handler = devinet_sysctl_forward, |
68dd299bc [INET]: Merge sys... |
2263 |
.extra1 = &ipv4_devconf, |
c0ce9fb30 [IPV4]: Store the... |
2264 |
.extra2 = &init_net, |
68dd299bc [INET]: Merge sys... |
2265 2266 2267 |
}, { }, }; |
2a75de0c1 [NETNS]: Should b... |
2268 |
#endif |
68dd299bc [INET]: Merge sys... |
2269 |
|
752d14dc6 [IPV4]: Move the ... |
2270 2271 2272 |
static __net_init int devinet_init_net(struct net *net) { int err; |
752d14dc6 [IPV4]: Move the ... |
2273 |
struct ipv4_devconf *all, *dflt; |
2a75de0c1 [NETNS]: Should b... |
2274 2275 |
#ifdef CONFIG_SYSCTL struct ctl_table *tbl = ctl_forward_entry; |
752d14dc6 [IPV4]: Move the ... |
2276 |
struct ctl_table_header *forw_hdr; |
2a75de0c1 [NETNS]: Should b... |
2277 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2278 2279 2280 2281 |
err = -ENOMEM; all = &ipv4_devconf; dflt = &ipv4_devconf_dflt; |
752d14dc6 [IPV4]: Move the ... |
2282 |
|
09ad9bc75 net: use net_eq t... |
2283 |
if (!net_eq(net, &init_net)) { |
752d14dc6 [IPV4]: Move the ... |
2284 |
all = kmemdup(all, sizeof(ipv4_devconf), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
2285 |
if (!all) |
752d14dc6 [IPV4]: Move the ... |
2286 2287 2288 |
goto err_alloc_all; dflt = kmemdup(dflt, sizeof(ipv4_devconf_dflt), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
2289 |
if (!dflt) |
752d14dc6 [IPV4]: Move the ... |
2290 |
goto err_alloc_dflt; |
2a75de0c1 [NETNS]: Should b... |
2291 |
#ifdef CONFIG_SYSCTL |
752d14dc6 [IPV4]: Move the ... |
2292 |
tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL); |
51456b291 ipv4: coding styl... |
2293 |
if (!tbl) |
752d14dc6 [IPV4]: Move the ... |
2294 |
goto err_alloc_ctl; |
02291680f net ipv4: Decoupl... |
2295 |
tbl[0].data = &all->data[IPV4_DEVCONF_FORWARDING - 1]; |
752d14dc6 [IPV4]: Move the ... |
2296 2297 |
tbl[0].extra1 = all; tbl[0].extra2 = net; |
2a75de0c1 [NETNS]: Should b... |
2298 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2299 2300 2301 |
} #ifdef CONFIG_SYSCTL |
29c994e36 netconf: add a no... |
2302 |
err = __devinet_sysctl_register(net, "all", NETCONFA_IFINDEX_ALL, all); |
752d14dc6 [IPV4]: Move the ... |
2303 2304 |
if (err < 0) goto err_reg_all; |
29c994e36 netconf: add a no... |
2305 2306 |
err = __devinet_sysctl_register(net, "default", NETCONFA_IFINDEX_DEFAULT, dflt); |
752d14dc6 [IPV4]: Move the ... |
2307 2308 2309 2310 |
if (err < 0) goto err_reg_dflt; err = -ENOMEM; |
8607ddb86 net ipv4: Convert... |
2311 |
forw_hdr = register_net_sysctl(net, "net/ipv4", tbl); |
51456b291 ipv4: coding styl... |
2312 |
if (!forw_hdr) |
752d14dc6 [IPV4]: Move the ... |
2313 |
goto err_reg_ctl; |
2a75de0c1 [NETNS]: Should b... |
2314 |
net->ipv4.forw_hdr = forw_hdr; |
752d14dc6 [IPV4]: Move the ... |
2315 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2316 2317 2318 2319 2320 2321 |
net->ipv4.devconf_all = all; net->ipv4.devconf_dflt = dflt; return 0; #ifdef CONFIG_SYSCTL err_reg_ctl: |
b5c9641d3 net: devinet: Add... |
2322 |
__devinet_sysctl_unregister(net, dflt, NETCONFA_IFINDEX_DEFAULT); |
752d14dc6 [IPV4]: Move the ... |
2323 |
err_reg_dflt: |
b5c9641d3 net: devinet: Add... |
2324 |
__devinet_sysctl_unregister(net, all, NETCONFA_IFINDEX_ALL); |
752d14dc6 [IPV4]: Move the ... |
2325 2326 2327 |
err_reg_all: if (tbl != ctl_forward_entry) kfree(tbl); |
752d14dc6 [IPV4]: Move the ... |
2328 |
err_alloc_ctl: |
2a75de0c1 [NETNS]: Should b... |
2329 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 |
if (dflt != &ipv4_devconf_dflt) kfree(dflt); err_alloc_dflt: if (all != &ipv4_devconf) kfree(all); err_alloc_all: return err; } static __net_exit void devinet_exit_net(struct net *net) { |
2a75de0c1 [NETNS]: Should b... |
2341 |
#ifdef CONFIG_SYSCTL |
752d14dc6 [IPV4]: Move the ... |
2342 2343 2344 |
struct ctl_table *tbl; tbl = net->ipv4.forw_hdr->ctl_table_arg; |
752d14dc6 [IPV4]: Move the ... |
2345 |
unregister_net_sysctl_table(net->ipv4.forw_hdr); |
b5c9641d3 net: devinet: Add... |
2346 2347 2348 2349 |
__devinet_sysctl_unregister(net, net->ipv4.devconf_dflt, NETCONFA_IFINDEX_DEFAULT); __devinet_sysctl_unregister(net, net->ipv4.devconf_all, NETCONFA_IFINDEX_ALL); |
752d14dc6 [IPV4]: Move the ... |
2350 |
kfree(tbl); |
2a75de0c1 [NETNS]: Should b... |
2351 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2352 2353 2354 2355 2356 2357 2358 2359 |
kfree(net->ipv4.devconf_dflt); kfree(net->ipv4.devconf_all); } static __net_initdata struct pernet_operations devinet_ops = { .init = devinet_init_net, .exit = devinet_exit_net, }; |
207895fd3 net: mark some po... |
2360 |
static struct rtnl_af_ops inet_af_ops __read_mostly = { |
9f0f7272a ipv4: AF_INET lin... |
2361 2362 2363 |
.family = AF_INET, .fill_link_af = inet_fill_link_af, .get_link_af_size = inet_get_link_af_size, |
cf7afbfeb rtnl: make link a... |
2364 2365 |
.validate_link_af = inet_validate_link_af, .set_link_af = inet_set_link_af, |
9f0f7272a ipv4: AF_INET lin... |
2366 |
}; |
1da177e4c Linux-2.6.12-rc2 |
2367 2368 |
void __init devinet_init(void) { |
fd23c3b31 ipv4: Add hash ta... |
2369 2370 2371 2372 |
int i; for (i = 0; i < IN4_ADDR_HSIZE; i++) INIT_HLIST_HEAD(&inet_addr_lst[i]); |
752d14dc6 [IPV4]: Move the ... |
2373 |
register_pernet_subsys(&devinet_ops); |
1da177e4c Linux-2.6.12-rc2 |
2374 2375 |
register_gifconf(PF_INET, inet_gifconf); register_netdevice_notifier(&ip_netdev_notifier); |
63f3444fb [IPv4]: Use rtnl ... |
2376 |
|
906e073f3 net/ipv4: queue w... |
2377 |
queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, 0); |
5c766d642 ipv4: introduce a... |
2378 |
|
9f0f7272a ipv4: AF_INET lin... |
2379 |
rtnl_af_register(&inet_af_ops); |
b97bac64a rtnetlink: make r... |
2380 2381 2382 |
rtnl_register(PF_INET, RTM_NEWADDR, inet_rtm_newaddr, NULL, 0); rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL, 0); rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr, 0); |
9e5511106 rtnl/ipv4: add su... |
2383 |
rtnl_register(PF_INET, RTM_GETNETCONF, inet_netconf_get_devconf, |
b97bac64a rtnetlink: make r... |
2384 |
inet_netconf_dump_devconf, 0); |
1da177e4c Linux-2.6.12-rc2 |
2385 |
} |