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net/ipv4/devinet.c
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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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#include <asm/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/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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#include "fib_lookup.h" |
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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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}, |
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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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}, |
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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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}; |
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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]; static DEFINE_SPINLOCK(inet_addr_hash_lock); |
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static u32 inet_addr_hash(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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spin_lock(&inet_addr_hash_lock); hlist_add_head_rcu(&ifa->hash, &inet_addr_lst[hash]); spin_unlock(&inet_addr_hash_lock); } static void inet_hash_remove(struct in_ifaddr *ifa) { spin_lock(&inet_addr_hash_lock); hlist_del_init_rcu(&ifa->hash); spin_unlock(&inet_addr_hash_lock); } |
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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 void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap, int destroy); #ifdef CONFIG_SYSCTL |
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static void 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 void devinet_sysctl_register(struct in_device *idev) |
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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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#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; 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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in_dev_hold(in_dev); |
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|
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devinet_sysctl_register(in_dev); |
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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 */ |
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rcu_assign_pointer(dev->ip_ptr, in_dev); |
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out: |
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return in_dev; 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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/* 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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/* 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); |
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blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1); |
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|
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if (promote) { |
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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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|
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promote->ifa_flags &= ~IFA_F_SECONDARY; |
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rtmsg_ifa(RTM_NEWADDR, promote, nlh, portid); |
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blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, promote); |
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for (ifa = next_sec; ifa; ifa = ifa->ifa_next) { |
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if (ifa1->ifa_mask != ifa->ifa_mask || !inet_ifa_match(ifa1->ifa_address, ifa)) continue; fib_add_ifaddr(ifa); } } |
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if (destroy) |
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inet_free_ifa(ifa1); |
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} |
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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); } |
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static void check_lifetime(struct work_struct *work); static DECLARE_DELAYED_WORK(check_lifetime_work, check_lifetime); |
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static int __inet_insert_ifa(struct in_ifaddr *ifa, struct nlmsghdr *nlh, |
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u32 portid) |
1da177e4c Linux-2.6.12-rc2 |
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 |
{ struct in_device *in_dev = ifa->ifa_dev; struct in_ifaddr *ifa1, **ifap, **last_primary; 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; } } if (!(ifa->ifa_flags & IFA_F_SECONDARY)) { net_srandom(ifa->ifa_local); ifap = last_primary; } ifa->ifa_next = *ifap; *ifap = ifa; |
fd23c3b31 ipv4: Add hash ta... |
447 |
inet_hash_insert(dev_net(in_dev->dev), ifa); |
5c766d642 ipv4: introduce a... |
448 449 |
cancel_delayed_work(&check_lifetime_work); schedule_delayed_work(&check_lifetime_work, 0); |
1da177e4c Linux-2.6.12-rc2 |
450 451 452 |
/* 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... |
453 |
rtmsg_ifa(RTM_NEWADDR, ifa, nlh, portid); |
e041c6834 [PATCH] Notifier ... |
454 |
blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa); |
1da177e4c Linux-2.6.12-rc2 |
455 456 457 |
return 0; } |
d6062cbbd [IPv4] address: C... |
458 459 460 461 |
static int inet_insert_ifa(struct in_ifaddr *ifa) { return __inet_insert_ifa(ifa, NULL, 0); } |
1da177e4c Linux-2.6.12-rc2 |
462 463 |
static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa) { |
e5ed63991 [IPV4]: Replace _... |
464 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
1da177e4c Linux-2.6.12-rc2 |
465 466 467 468 |
ASSERT_RTNL(); if (!in_dev) { |
71e27da96 [IPV4]: Restore o... |
469 470 |
inet_free_ifa(ifa); return -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
471 |
} |
71e27da96 [IPV4]: Restore o... |
472 |
ipv4_devconf_setall(in_dev); |
1da177e4c Linux-2.6.12-rc2 |
473 |
if (ifa->ifa_dev != in_dev) { |
547b792ca net: convert BUG_... |
474 |
WARN_ON(ifa->ifa_dev); |
1da177e4c Linux-2.6.12-rc2 |
475 476 477 |
in_dev_hold(in_dev); ifa->ifa_dev = in_dev; } |
f97c1e0c6 [IPV4] net/ipv4: ... |
478 |
if (ipv4_is_loopback(ifa->ifa_local)) |
1da177e4c Linux-2.6.12-rc2 |
479 480 481 |
ifa->ifa_scope = RT_SCOPE_HOST; return inet_insert_ifa(ifa); } |
8723e1b4a inet: RCU changes... |
482 483 484 |
/* Caller must hold RCU or RTNL : * We dont take a reference on found in_device */ |
7fee0ca23 [NETNS]: Add netn... |
485 |
struct in_device *inetdev_by_index(struct net *net, int ifindex) |
1da177e4c Linux-2.6.12-rc2 |
486 487 488 |
{ struct net_device *dev; struct in_device *in_dev = NULL; |
c148fc2e3 ipv4: inetdev_by_... |
489 490 491 |
rcu_read_lock(); dev = dev_get_by_index_rcu(net, ifindex); |
1da177e4c Linux-2.6.12-rc2 |
492 |
if (dev) |
8723e1b4a inet: RCU changes... |
493 |
in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
c148fc2e3 ipv4: inetdev_by_... |
494 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
495 496 |
return in_dev; } |
9f9354b92 net: net/ipv4/dev... |
497 |
EXPORT_SYMBOL(inetdev_by_index); |
1da177e4c Linux-2.6.12-rc2 |
498 499 |
/* Called only from RTNL semaphored context. No locks. */ |
60cad5da5 [IPV4]: annotate ... |
500 501 |
struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask) |
1da177e4c Linux-2.6.12-rc2 |
502 503 504 505 506 507 508 509 510 |
{ 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; } |
661d2967b rtnetlink: Remove... |
511 |
static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4c Linux-2.6.12-rc2 |
512 |
{ |
3b1e0a655 [NET] NETNS: Omit... |
513 |
struct net *net = sock_net(skb->sk); |
dfdd5fd4e [IPV4]: Convert a... |
514 |
struct nlattr *tb[IFA_MAX+1]; |
1da177e4c Linux-2.6.12-rc2 |
515 |
struct in_device *in_dev; |
dfdd5fd4e [IPV4]: Convert a... |
516 |
struct ifaddrmsg *ifm; |
1da177e4c Linux-2.6.12-rc2 |
517 |
struct in_ifaddr *ifa, **ifap; |
dfdd5fd4e [IPV4]: Convert a... |
518 |
int err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
519 520 |
ASSERT_RTNL(); |
dfdd5fd4e [IPV4]: Convert a... |
521 522 523 524 525 |
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy); if (err < 0) goto errout; ifm = nlmsg_data(nlh); |
7fee0ca23 [NETNS]: Add netn... |
526 |
in_dev = inetdev_by_index(net, ifm->ifa_index); |
dfdd5fd4e [IPV4]: Convert a... |
527 528 529 530 |
if (in_dev == NULL) { err = -ENODEV; goto errout; } |
1da177e4c Linux-2.6.12-rc2 |
531 532 |
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) { |
dfdd5fd4e [IPV4]: Convert a... |
533 |
if (tb[IFA_LOCAL] && |
a7a628c44 [IPV4]: IFA_{LOCA... |
534 |
ifa->ifa_local != nla_get_be32(tb[IFA_LOCAL])) |
dfdd5fd4e [IPV4]: Convert a... |
535 536 537 |
continue; if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label)) |
1da177e4c Linux-2.6.12-rc2 |
538 |
continue; |
dfdd5fd4e [IPV4]: Convert a... |
539 540 541 |
if (tb[IFA_ADDRESS] && (ifm->ifa_prefixlen != ifa->ifa_prefixlen || |
a7a628c44 [IPV4]: IFA_{LOCA... |
542 |
!inet_ifa_match(nla_get_be32(tb[IFA_ADDRESS]), ifa))) |
dfdd5fd4e [IPV4]: Convert a... |
543 |
continue; |
15e473046 netlink: Rename p... |
544 |
__inet_del_ifa(in_dev, ifap, 1, nlh, NETLINK_CB(skb).portid); |
1da177e4c Linux-2.6.12-rc2 |
545 546 |
return 0; } |
dfdd5fd4e [IPV4]: Convert a... |
547 548 549 550 |
err = -EADDRNOTAVAIL; errout: return err; |
1da177e4c Linux-2.6.12-rc2 |
551 |
} |
5c766d642 ipv4: introduce a... |
552 553 554 555 556 557 |
#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... |
558 |
struct hlist_node *n; |
5c766d642 ipv4: introduce a... |
559 560 561 562 |
int i; now = jiffies; next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY); |
5c766d642 ipv4: introduce a... |
563 |
for (i = 0; i < IN4_ADDR_HSIZE; i++) { |
c988d1e8c net: ipv4: fix sc... |
564 565 566 |
bool change_needed = false; rcu_read_lock(); |
b67bfe0d4 hlist: drop the n... |
567 |
hlist_for_each_entry_rcu(ifa, &inet_addr_lst[i], hash) { |
5c766d642 ipv4: introduce a... |
568 569 570 571 572 573 574 575 576 577 578 |
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... |
579 |
change_needed = true; |
5c766d642 ipv4: introduce a... |
580 581 582 583 584 585 586 587 |
} 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... |
588 589 |
if (!(ifa->ifa_flags & IFA_F_DEPRECATED)) change_needed = true; |
5c766d642 ipv4: introduce a... |
590 591 592 593 594 595 596 |
} 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... |
597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 |
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... |
632 |
} |
5c766d642 ipv4: introduce a... |
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 |
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; schedule_delayed_work(&check_lifetime_work, next_sched - now); } 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 |
675 |
{ |
5c7539781 [IPV4]: Convert a... |
676 677 678 |
struct nlattr *tb[IFA_MAX+1]; struct in_ifaddr *ifa; struct ifaddrmsg *ifm; |
1da177e4c Linux-2.6.12-rc2 |
679 680 |
struct net_device *dev; struct in_device *in_dev; |
7b2185747 [IPV4]: Small sty... |
681 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
682 |
|
5c7539781 [IPV4]: Convert a... |
683 684 685 |
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy); if (err < 0) goto errout; |
1da177e4c Linux-2.6.12-rc2 |
686 |
|
5c7539781 [IPV4]: Convert a... |
687 |
ifm = nlmsg_data(nlh); |
7b2185747 [IPV4]: Small sty... |
688 689 |
err = -EINVAL; if (ifm->ifa_prefixlen > 32 || tb[IFA_LOCAL] == NULL) |
5c7539781 [IPV4]: Convert a... |
690 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
691 |
|
4b8aa9abe [NETNS]: Process ... |
692 |
dev = __dev_get_by_index(net, ifm->ifa_index); |
7b2185747 [IPV4]: Small sty... |
693 694 |
err = -ENODEV; if (dev == NULL) |
5c7539781 [IPV4]: Convert a... |
695 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
696 |
|
5c7539781 [IPV4]: Convert a... |
697 |
in_dev = __in_dev_get_rtnl(dev); |
7b2185747 [IPV4]: Small sty... |
698 699 |
err = -ENOBUFS; if (in_dev == NULL) |
71e27da96 [IPV4]: Restore o... |
700 |
goto errout; |
1da177e4c Linux-2.6.12-rc2 |
701 |
|
5c7539781 [IPV4]: Convert a... |
702 |
ifa = inet_alloc_ifa(); |
7b2185747 [IPV4]: Small sty... |
703 |
if (ifa == NULL) |
5c7539781 [IPV4]: Convert a... |
704 705 706 707 |
/* * A potential indev allocation can be left alive, it stays * assigned to its device and is destroy with it. */ |
5c7539781 [IPV4]: Convert a... |
708 |
goto errout; |
5c7539781 [IPV4]: Convert a... |
709 |
|
a4e65d36a [IPV4]: Swap the ... |
710 |
ipv4_devconf_setall(in_dev); |
5c7539781 [IPV4]: Convert a... |
711 712 713 714 |
in_dev_hold(in_dev); if (tb[IFA_ADDRESS] == NULL) tb[IFA_ADDRESS] = tb[IFA_LOCAL]; |
1da177e4c Linux-2.6.12-rc2 |
715 |
|
fd23c3b31 ipv4: Add hash ta... |
716 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
717 718 |
ifa->ifa_prefixlen = ifm->ifa_prefixlen; ifa->ifa_mask = inet_make_mask(ifm->ifa_prefixlen); |
1da177e4c Linux-2.6.12-rc2 |
719 720 |
ifa->ifa_flags = ifm->ifa_flags; ifa->ifa_scope = ifm->ifa_scope; |
5c7539781 [IPV4]: Convert a... |
721 |
ifa->ifa_dev = in_dev; |
a7a628c44 [IPV4]: IFA_{LOCA... |
722 723 |
ifa->ifa_local = nla_get_be32(tb[IFA_LOCAL]); ifa->ifa_address = nla_get_be32(tb[IFA_ADDRESS]); |
5c7539781 [IPV4]: Convert a... |
724 725 |
if (tb[IFA_BROADCAST]) |
a7a628c44 [IPV4]: IFA_{LOCA... |
726 |
ifa->ifa_broadcast = nla_get_be32(tb[IFA_BROADCAST]); |
5c7539781 [IPV4]: Convert a... |
727 |
|
5c7539781 [IPV4]: Convert a... |
728 729 |
if (tb[IFA_LABEL]) nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ); |
1da177e4c Linux-2.6.12-rc2 |
730 731 |
else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
5c766d642 ipv4: introduce a... |
732 733 734 735 736 737 |
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; |
b4f55925a net: rtm_to_ifadd... |
738 |
goto errout_free; |
5c766d642 ipv4: introduce a... |
739 740 741 742 |
} *pvalid_lft = ci->ifa_valid; *pprefered_lft = ci->ifa_prefered; } |
5c7539781 [IPV4]: Convert a... |
743 |
return ifa; |
b4f55925a net: rtm_to_ifadd... |
744 745 |
errout_free: inet_free_ifa(ifa); |
5c7539781 [IPV4]: Convert a... |
746 747 748 |
errout: return ERR_PTR(err); } |
5c766d642 ipv4: introduce a... |
749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 |
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; } |
661d2967b rtnetlink: Remove... |
766 |
static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) |
5c7539781 [IPV4]: Convert a... |
767 |
{ |
3b1e0a655 [NET] NETNS: Omit... |
768 |
struct net *net = sock_net(skb->sk); |
5c7539781 [IPV4]: Convert a... |
769 |
struct in_ifaddr *ifa; |
5c766d642 ipv4: introduce a... |
770 771 772 |
struct in_ifaddr *ifa_existing; __u32 valid_lft = INFINITY_LIFE_TIME; __u32 prefered_lft = INFINITY_LIFE_TIME; |
5c7539781 [IPV4]: Convert a... |
773 774 |
ASSERT_RTNL(); |
5c766d642 ipv4: introduce a... |
775 |
ifa = rtm_to_ifaddr(net, nlh, &valid_lft, &prefered_lft); |
5c7539781 [IPV4]: Convert a... |
776 777 |
if (IS_ERR(ifa)) return PTR_ERR(ifa); |
5c766d642 ipv4: introduce a... |
778 779 780 781 782 783 784 785 786 787 788 789 790 |
ifa_existing = find_matching_ifa(ifa); if (!ifa_existing) { /* It would be best to check for !NLM_F_CREATE here but * userspace alreay relies on not having to provide this. */ set_ifa_lifetime(ifa, valid_lft, prefered_lft); 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... |
791 792 |
ifa = ifa_existing; set_ifa_lifetime(ifa, valid_lft, prefered_lft); |
05a324b9c net: ipv4: reset ... |
793 794 |
cancel_delayed_work(&check_lifetime_work); schedule_delayed_work(&check_lifetime_work, 0); |
34e2ed34a net: ipv4: notify... |
795 796 |
rtmsg_ifa(RTM_NEWADDR, ifa, nlh, NETLINK_CB(skb).portid); blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa); |
5c766d642 ipv4: introduce a... |
797 798 |
} return 0; |
1da177e4c Linux-2.6.12-rc2 |
799 800 801 802 803 |
} /* * Determine a default network mask, based on the IP address. */ |
40384999d ipv4: change inet... |
804 |
static int inet_abc_len(__be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
805 806 |
{ int rc = -1; /* Something else, probably a multicast. */ |
f97c1e0c6 [IPV4] net/ipv4: ... |
807 |
if (ipv4_is_zeronet(addr)) |
e905a9eda [NET] IPV4: Fix w... |
808 |
rc = 0; |
1da177e4c Linux-2.6.12-rc2 |
809 |
else { |
714e85be3 [IPV6]: Assorted ... |
810 |
__u32 haddr = ntohl(addr); |
1da177e4c Linux-2.6.12-rc2 |
811 |
|
714e85be3 [IPV6]: Assorted ... |
812 |
if (IN_CLASSA(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
813 |
rc = 8; |
714e85be3 [IPV6]: Assorted ... |
814 |
else if (IN_CLASSB(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
815 |
rc = 16; |
714e85be3 [IPV6]: Assorted ... |
816 |
else if (IN_CLASSC(haddr)) |
1da177e4c Linux-2.6.12-rc2 |
817 818 |
rc = 24; } |
e905a9eda [NET] IPV4: Fix w... |
819 |
return rc; |
1da177e4c Linux-2.6.12-rc2 |
820 |
} |
e5b13cb10 [NETNS]: Process ... |
821 |
int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg) |
1da177e4c Linux-2.6.12-rc2 |
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 |
{ 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 ... |
848 |
dev_load(net, ifr.ifr_name); |
1da177e4c Linux-2.6.12-rc2 |
849 |
|
132adf546 [IPV4]: cleanup |
850 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
851 852 853 854 855 856 857 858 859 860 861 862 863 864 |
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... |
865 |
ret = -EPERM; |
52e804c6d net: Allow userns... |
866 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1da177e4c Linux-2.6.12-rc2 |
867 868 869 870 871 872 |
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... |
873 |
ret = -EPERM; |
52e804c6d net: Allow userns... |
874 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1da177e4c Linux-2.6.12-rc2 |
875 876 877 878 879 880 881 882 883 884 885 886 887 |
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... |
888 889 |
dev = __dev_get_by_name(net, ifr.ifr_name); if (!dev) |
1da177e4c Linux-2.6.12-rc2 |
890 891 892 893 |
goto done; if (colon) *colon = ':'; |
9f9354b92 net: net/ipv4/dev... |
894 895 |
in_dev = __in_dev_get_rtnl(dev); if (in_dev) { |
1da177e4c Linux-2.6.12-rc2 |
896 897 898 899 900 901 902 903 904 905 |
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... |
906 |
ifa->ifa_local) { |
1da177e4c Linux-2.6.12-rc2 |
907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 |
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 |
925 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 |
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... |
962 963 |
ifa = inet_alloc_ifa(); if (!ifa) |
1da177e4c Linux-2.6.12-rc2 |
964 |
break; |
c7e2e1d72 ipv4: fix NULL ch... |
965 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
966 967 968 969 970 971 972 973 974 975 |
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... |
976 |
ifa->ifa_scope = 0; |
1da177e4c Linux-2.6.12-rc2 |
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 |
} 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... |
992 |
set_ifa_lifetime(ifa, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); |
1da177e4c Linux-2.6.12-rc2 |
993 994 995 996 997 998 999 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 |
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 ... |
1028 |
__be32 old_mask = ifa->ifa_mask; |
1da177e4c Linux-2.6.12-rc2 |
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 |
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... |
1042 |
(ifa->ifa_local|~old_mask))) { |
1da177e4c Linux-2.6.12-rc2 |
1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
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 _... |
1062 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 |
struct in_ifaddr *ifa; struct ifreq ifr; int done = 0; |
9f9354b92 net: net/ipv4/dev... |
1066 |
if (!in_dev) |
1da177e4c Linux-2.6.12-rc2 |
1067 |
goto out; |
9f9354b92 net: net/ipv4/dev... |
1068 |
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { |
1da177e4c Linux-2.6.12-rc2 |
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 |
if (!buf) { done += sizeof(ifr); continue; } if (len < (int) sizeof(ifr)) break; memset(&ifr, 0, sizeof(struct ifreq)); if (ifa->ifa_label) strcpy(ifr.ifr_name, ifa->ifa_label); else strcpy(ifr.ifr_name, dev->name); (*(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; } |
a61ced5d1 [IPV4]: inet_sele... |
1096 |
__be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1097 |
{ |
a61ced5d1 [IPV4]: inet_sele... |
1098 |
__be32 addr = 0; |
1da177e4c Linux-2.6.12-rc2 |
1099 |
struct in_device *in_dev; |
c346dca10 [NET] NETNS: Omit... |
1100 |
struct net *net = dev_net(dev); |
1da177e4c Linux-2.6.12-rc2 |
1101 1102 |
rcu_read_lock(); |
e5ed63991 [IPV4]: Replace _... |
1103 |
in_dev = __in_dev_get_rcu(dev); |
1da177e4c Linux-2.6.12-rc2 |
1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 |
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 |
1117 1118 |
if (addr) |
c6d14c845 net: Introduce fo... |
1119 |
goto out_unlock; |
9f9354b92 net: net/ipv4/dev... |
1120 |
no_in_dev: |
1da177e4c Linux-2.6.12-rc2 |
1121 1122 1123 1124 1125 |
/* Not loopback addresses on loopback should be preferred in this case. It is importnat that lo is the first interface in dev_base list. */ |
c6d14c845 net: Introduce fo... |
1126 |
for_each_netdev_rcu(net, dev) { |
9f9354b92 net: net/ipv4/dev... |
1127 1128 |
in_dev = __in_dev_get_rcu(dev); if (!in_dev) |
1da177e4c Linux-2.6.12-rc2 |
1129 1130 1131 1132 1133 1134 |
continue; for_primary_ifa(in_dev) { if (ifa->ifa_scope != RT_SCOPE_LINK && ifa->ifa_scope <= scope) { addr = ifa->ifa_local; |
c6d14c845 net: Introduce fo... |
1135 |
goto out_unlock; |
1da177e4c Linux-2.6.12-rc2 |
1136 1137 1138 |
} } endfor_ifa(in_dev); } |
c6d14c845 net: Introduce fo... |
1139 |
out_unlock: |
1da177e4c Linux-2.6.12-rc2 |
1140 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1141 1142 |
return addr; } |
9f9354b92 net: net/ipv4/dev... |
1143 |
EXPORT_SYMBOL(inet_select_addr); |
1da177e4c Linux-2.6.12-rc2 |
1144 |
|
60cad5da5 [IPV4]: annotate ... |
1145 1146 |
static __be32 confirm_addr_indev(struct in_device *in_dev, __be32 dst, __be32 local, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1147 1148 |
{ int same = 0; |
a144ea4b7 [IPV4]: annotate ... |
1149 |
__be32 addr = 0; |
1da177e4c Linux-2.6.12-rc2 |
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 |
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... |
1178 |
return same ? addr : 0; |
1da177e4c Linux-2.6.12-rc2 |
1179 1180 1181 1182 |
} /* * Confirm that local IP address exists using wildcards: |
9bd85e326 [IPV4]: Remove ex... |
1183 |
* - in_dev: only on this interface, 0=any interface |
1da177e4c Linux-2.6.12-rc2 |
1184 1185 1186 1187 |
* - 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 */ |
9bd85e326 [IPV4]: Remove ex... |
1188 1189 |
__be32 inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope) |
1da177e4c Linux-2.6.12-rc2 |
1190 |
{ |
60cad5da5 [IPV4]: annotate ... |
1191 |
__be32 addr = 0; |
9bd85e326 [IPV4]: Remove ex... |
1192 |
struct net_device *dev; |
39a6d0630 [NETNS]: Process ... |
1193 |
struct net *net; |
1da177e4c Linux-2.6.12-rc2 |
1194 |
|
39a6d0630 [NETNS]: Process ... |
1195 |
if (scope != RT_SCOPE_LINK) |
9bd85e326 [IPV4]: Remove ex... |
1196 |
return confirm_addr_indev(in_dev, dst, local, scope); |
1da177e4c Linux-2.6.12-rc2 |
1197 |
|
c346dca10 [NET] NETNS: Omit... |
1198 |
net = dev_net(in_dev->dev); |
1da177e4c Linux-2.6.12-rc2 |
1199 |
rcu_read_lock(); |
c6d14c845 net: Introduce fo... |
1200 |
for_each_netdev_rcu(net, dev) { |
9f9354b92 net: net/ipv4/dev... |
1201 1202 |
in_dev = __in_dev_get_rcu(dev); if (in_dev) { |
1da177e4c Linux-2.6.12-rc2 |
1203 1204 1205 1206 1207 1208 |
addr = confirm_addr_indev(in_dev, dst, local, scope); if (addr) break; } } rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1209 1210 1211 |
return addr; } |
eaddcd769 bonding: remove e... |
1212 |
EXPORT_SYMBOL(inet_confirm_addr); |
1da177e4c Linux-2.6.12-rc2 |
1213 1214 1215 1216 1217 1218 1219 |
/* * Device notifier */ int register_inetaddr_notifier(struct notifier_block *nb) { |
e041c6834 [PATCH] Notifier ... |
1220 |
return blocking_notifier_chain_register(&inetaddr_chain, nb); |
1da177e4c Linux-2.6.12-rc2 |
1221 |
} |
9f9354b92 net: net/ipv4/dev... |
1222 |
EXPORT_SYMBOL(register_inetaddr_notifier); |
1da177e4c Linux-2.6.12-rc2 |
1223 1224 1225 |
int unregister_inetaddr_notifier(struct notifier_block *nb) { |
e041c6834 [PATCH] Notifier ... |
1226 |
return blocking_notifier_chain_unregister(&inetaddr_chain, nb); |
1da177e4c Linux-2.6.12-rc2 |
1227 |
} |
9f9354b92 net: net/ipv4/dev... |
1228 |
EXPORT_SYMBOL(unregister_inetaddr_notifier); |
1da177e4c Linux-2.6.12-rc2 |
1229 |
|
9f9354b92 net: net/ipv4/dev... |
1230 1231 |
/* 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 |
1232 1233 |
*/ static void inetdev_changename(struct net_device *dev, struct in_device *in_dev) |
e905a9eda [NET] IPV4: Fix w... |
1234 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1235 1236 |
struct in_ifaddr *ifa; int named = 0; |
e905a9eda [NET] IPV4: Fix w... |
1237 1238 |
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { char old[IFNAMSIZ], *dot; |
1da177e4c Linux-2.6.12-rc2 |
1239 1240 |
memcpy(old, ifa->ifa_label, IFNAMSIZ); |
e905a9eda [NET] IPV4: Fix w... |
1241 |
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
1da177e4c Linux-2.6.12-rc2 |
1242 |
if (named++ == 0) |
573bf470e ipv4 addr: Send n... |
1243 |
goto skip; |
44344b2a8 [INET]: Fix netde... |
1244 |
dot = strchr(old, ':'); |
e905a9eda [NET] IPV4: Fix w... |
1245 1246 |
if (dot == NULL) { sprintf(old, ":%d", named); |
1da177e4c Linux-2.6.12-rc2 |
1247 1248 |
dot = old; } |
9f9354b92 net: net/ipv4/dev... |
1249 |
if (strlen(dot) + strlen(dev->name) < IFNAMSIZ) |
e905a9eda [NET] IPV4: Fix w... |
1250 |
strcat(ifa->ifa_label, dot); |
9f9354b92 net: net/ipv4/dev... |
1251 |
else |
e905a9eda [NET] IPV4: Fix w... |
1252 |
strcpy(ifa->ifa_label + (IFNAMSIZ - strlen(dot) - 1), dot); |
573bf470e ipv4 addr: Send n... |
1253 1254 |
skip: rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0); |
e905a9eda [NET] IPV4: Fix w... |
1255 1256 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1257 |
|
40384999d ipv4: change inet... |
1258 |
static bool inetdev_valid_mtu(unsigned int mtu) |
06770843c ipv: Re-enable IP... |
1259 1260 1261 |
{ return mtu >= 68; } |
d11327ad6 arp_notify: uncon... |
1262 1263 1264 1265 |
static void inetdev_send_gratuitous_arp(struct net_device *dev, struct in_device *in_dev) { |
b76d0789c IPv4: Send gratui... |
1266 |
struct in_ifaddr *ifa; |
d11327ad6 arp_notify: uncon... |
1267 |
|
b76d0789c IPv4: Send gratui... |
1268 1269 1270 1271 1272 1273 1274 |
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... |
1275 |
} |
1da177e4c Linux-2.6.12-rc2 |
1276 1277 1278 1279 1280 1281 |
/* Called only under RTNL semaphore */ static int inetdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = ptr; |
748e2d939 net: reinstate rt... |
1282 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
0115e8e30 net: remove delay... |
1283 |
|
1da177e4c Linux-2.6.12-rc2 |
1284 1285 1286 |
ASSERT_RTNL(); if (!in_dev) { |
8030f5449 [IPV4] devinet: R... |
1287 |
if (event == NETDEV_REGISTER) { |
1da177e4c Linux-2.6.12-rc2 |
1288 |
in_dev = inetdev_init(dev); |
b217d616a [IPV4/IPV6]: Fail... |
1289 1290 |
if (!in_dev) return notifier_from_errno(-ENOMEM); |
0cc217e16 [IPV4]: When poss... |
1291 |
if (dev->flags & IFF_LOOPBACK) { |
42f811b8b [IPV4]: Convert I... |
1292 1293 |
IN_DEV_CONF_SET(in_dev, NOXFRM, 1); IN_DEV_CONF_SET(in_dev, NOPOLICY, 1); |
8030f5449 [IPV4] devinet: R... |
1294 |
} |
06770843c ipv: Re-enable IP... |
1295 1296 1297 1298 |
} 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 |
1299 1300 1301 1302 1303 1304 |
} goto out; } switch (event) { case NETDEV_REGISTER: |
91df42bed net: ipv4 and ipv... |
1305 1306 |
pr_debug("%s: bug ", __func__); |
a9b3cd7f3 rcu: convert uses... |
1307 |
RCU_INIT_POINTER(dev->ip_ptr, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1308 1309 |
break; case NETDEV_UP: |
06770843c ipv: Re-enable IP... |
1310 |
if (!inetdev_valid_mtu(dev->mtu)) |
1da177e4c Linux-2.6.12-rc2 |
1311 |
break; |
0cc217e16 [IPV4]: When poss... |
1312 |
if (dev->flags & IFF_LOOPBACK) { |
9f9354b92 net: net/ipv4/dev... |
1313 1314 1315 |
struct in_ifaddr *ifa = inet_alloc_ifa(); if (ifa) { |
fd23c3b31 ipv4: Add hash ta... |
1316 |
INIT_HLIST_NODE(&ifa->hash); |
1da177e4c Linux-2.6.12-rc2 |
1317 1318 1319 1320 1321 1322 1323 1324 |
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... |
1325 1326 |
set_ifa_lifetime(ifa, INFINITY_LIFE_TIME, INFINITY_LIFE_TIME); |
1da177e4c Linux-2.6.12-rc2 |
1327 1328 1329 1330 |
inet_insert_ifa(ifa); } } ip_mc_up(in_dev); |
eefef1cf7 net: add ARP noti... |
1331 1332 |
/* fall through */ case NETDEV_CHANGEADDR: |
d11327ad6 arp_notify: uncon... |
1333 1334 1335 1336 |
if (!IN_DEV_ARP_NOTIFY(in_dev)) break; /* fall through */ case NETDEV_NOTIFY_PEERS: |
a21090cff ipv4: arp_notify ... |
1337 |
/* Send gratuitous ARP to notify of link change */ |
d11327ad6 arp_notify: uncon... |
1338 |
inetdev_send_gratuitous_arp(dev, in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1339 1340 1341 1342 |
break; case NETDEV_DOWN: ip_mc_down(in_dev); break; |
93d9b7d7a net: rename notif... |
1343 |
case NETDEV_PRE_TYPE_CHANGE: |
75c78500d bonding: remap mu... |
1344 1345 |
ip_mc_unmap(in_dev); break; |
93d9b7d7a net: rename notif... |
1346 |
case NETDEV_POST_TYPE_CHANGE: |
75c78500d bonding: remap mu... |
1347 1348 |
ip_mc_remap(in_dev); break; |
1da177e4c Linux-2.6.12-rc2 |
1349 |
case NETDEV_CHANGEMTU: |
06770843c ipv: Re-enable IP... |
1350 |
if (inetdev_valid_mtu(dev->mtu)) |
1da177e4c Linux-2.6.12-rc2 |
1351 |
break; |
06770843c ipv: Re-enable IP... |
1352 |
/* disable IP when MTU is not enough */ |
1da177e4c Linux-2.6.12-rc2 |
1353 1354 1355 1356 1357 1358 1359 1360 |
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... |
1361 |
devinet_sysctl_unregister(in_dev); |
66f27a520 [IPV4]: Unify and... |
1362 |
devinet_sysctl_register(in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1363 1364 1365 1366 1367 1368 1369 |
break; } out: return NOTIFY_DONE; } static struct notifier_block ip_netdev_notifier = { |
539afedfc net: clean up net... |
1370 |
.notifier_call = inetdev_event, |
1da177e4c Linux-2.6.12-rc2 |
1371 |
}; |
40384999d ipv4: change inet... |
1372 |
static size_t inet_nlmsg_size(void) |
339bf98ff [NETLINK]: Do pre... |
1373 1374 1375 1376 1377 |
{ return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) + nla_total_size(4) /* IFA_ADDRESS */ + nla_total_size(4) /* IFA_LOCAL */ + nla_total_size(4) /* IFA_BROADCAST */ |
339bf98ff [NETLINK]: Do pre... |
1378 1379 |
+ nla_total_size(IFNAMSIZ); /* IFA_LABEL */ } |
5c766d642 ipv4: introduce a... |
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 |
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 |
1397 |
static int inet_fill_ifaddr(struct sk_buff *skb, struct in_ifaddr *ifa, |
15e473046 netlink: Rename p... |
1398 |
u32 portid, u32 seq, int event, unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1399 1400 1401 |
{ struct ifaddrmsg *ifm; struct nlmsghdr *nlh; |
5c766d642 ipv4: introduce a... |
1402 |
u32 preferred, valid; |
1da177e4c Linux-2.6.12-rc2 |
1403 |
|
15e473046 netlink: Rename p... |
1404 |
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), flags); |
47f68512d [IPV4]: Convert a... |
1405 |
if (nlh == NULL) |
26932566a [NETLINK]: Don't ... |
1406 |
return -EMSGSIZE; |
47f68512d [IPV4]: Convert a... |
1407 1408 |
ifm = nlmsg_data(nlh); |
1da177e4c Linux-2.6.12-rc2 |
1409 1410 |
ifm->ifa_family = AF_INET; ifm->ifa_prefixlen = ifa->ifa_prefixlen; |
5c766d642 ipv4: introduce a... |
1411 |
ifm->ifa_flags = ifa->ifa_flags; |
1da177e4c Linux-2.6.12-rc2 |
1412 1413 |
ifm->ifa_scope = ifa->ifa_scope; ifm->ifa_index = ifa->ifa_dev->dev->ifindex; |
47f68512d [IPV4]: Convert a... |
1414 |
|
5c766d642 ipv4: introduce a... |
1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 |
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 ... |
1436 1437 1438 1439 1440 1441 1442 |
if ((ifa->ifa_address && nla_put_be32(skb, IFA_ADDRESS, ifa->ifa_address)) || (ifa->ifa_local && nla_put_be32(skb, IFA_LOCAL, ifa->ifa_local)) || (ifa->ifa_broadcast && nla_put_be32(skb, IFA_BROADCAST, ifa->ifa_broadcast)) || (ifa->ifa_label[0] && |
5c766d642 ipv4: introduce a... |
1443 1444 1445 |
nla_put_string(skb, IFA_LABEL, ifa->ifa_label)) || put_cacheinfo(skb, ifa->ifa_cstamp, ifa->ifa_tstamp, preferred, valid)) |
f3756b79e ipv4: Stop using ... |
1446 |
goto nla_put_failure; |
1da177e4c Linux-2.6.12-rc2 |
1447 |
|
47f68512d [IPV4]: Convert a... |
1448 1449 1450 |
return nlmsg_end(skb, nlh); nla_put_failure: |
26932566a [NETLINK]: Don't ... |
1451 1452 |
nlmsg_cancel(skb, nlh); return -EMSGSIZE; |
1da177e4c Linux-2.6.12-rc2 |
1453 1454 1455 1456 |
} static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { |
3b1e0a655 [NET] NETNS: Omit... |
1457 |
struct net *net = sock_net(skb->sk); |
eec4df988 ipv4: speedup ine... |
1458 1459 1460 |
int h, s_h; int idx, s_idx; int ip_idx, s_ip_idx; |
1da177e4c Linux-2.6.12-rc2 |
1461 1462 1463 |
struct net_device *dev; struct in_device *in_dev; struct in_ifaddr *ifa; |
eec4df988 ipv4: speedup ine... |
1464 |
struct hlist_head *head; |
1da177e4c Linux-2.6.12-rc2 |
1465 |
|
eec4df988 ipv4: speedup ine... |
1466 1467 1468 1469 1470 1471 1472 1473 |
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... |
1474 1475 |
cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^ net->dev_base_seq; |
b67bfe0d4 hlist: drop the n... |
1476 |
hlist_for_each_entry_rcu(dev, head, index_hlist) { |
eec4df988 ipv4: speedup ine... |
1477 1478 |
if (idx < s_idx) goto cont; |
4b97efdf3 net: fix netlink ... |
1479 |
if (h > s_h || idx > s_idx) |
eec4df988 ipv4: speedup ine... |
1480 1481 1482 1483 |
s_ip_idx = 0; in_dev = __in_dev_get_rcu(dev); if (!in_dev) goto cont; |
1da177e4c Linux-2.6.12-rc2 |
1484 |
|
eec4df988 ipv4: speedup ine... |
1485 1486 1487 1488 1489 |
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... |
1490 |
NETLINK_CB(cb->skb).portid, |
1da177e4c Linux-2.6.12-rc2 |
1491 |
cb->nlh->nlmsg_seq, |
eec4df988 ipv4: speedup ine... |
1492 1493 1494 1495 |
RTM_NEWADDR, NLM_F_MULTI) <= 0) { rcu_read_unlock(); goto done; } |
0465277f6 ipv4: provide add... |
1496 |
nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
eec4df988 ipv4: speedup ine... |
1497 |
} |
7562f876c [NET]: Rework dev... |
1498 |
cont: |
eec4df988 ipv4: speedup ine... |
1499 1500 1501 |
idx++; } rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1502 1503 1504 |
} done: |
eec4df988 ipv4: speedup ine... |
1505 1506 1507 |
cb->args[0] = h; cb->args[1] = idx; cb->args[2] = ip_idx; |
1da177e4c Linux-2.6.12-rc2 |
1508 1509 1510 |
return skb->len; } |
539afedfc net: clean up net... |
1511 |
static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh, |
15e473046 netlink: Rename p... |
1512 |
u32 portid) |
1da177e4c Linux-2.6.12-rc2 |
1513 |
{ |
47f68512d [IPV4]: Convert a... |
1514 |
struct sk_buff *skb; |
d6062cbbd [IPv4] address: C... |
1515 1516 |
u32 seq = nlh ? nlh->nlmsg_seq : 0; int err = -ENOBUFS; |
4b8aa9abe [NETNS]: Process ... |
1517 |
struct net *net; |
1da177e4c Linux-2.6.12-rc2 |
1518 |
|
c346dca10 [NET] NETNS: Omit... |
1519 |
net = dev_net(ifa->ifa_dev->dev); |
339bf98ff [NETLINK]: Do pre... |
1520 |
skb = nlmsg_new(inet_nlmsg_size(), GFP_KERNEL); |
47f68512d [IPV4]: Convert a... |
1521 |
if (skb == NULL) |
d6062cbbd [IPv4] address: C... |
1522 |
goto errout; |
15e473046 netlink: Rename p... |
1523 |
err = inet_fill_ifaddr(skb, ifa, portid, seq, event, 0); |
26932566a [NETLINK]: Don't ... |
1524 1525 1526 1527 1528 1529 |
if (err < 0) { /* -EMSGSIZE implies BUG in inet_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } |
15e473046 netlink: Rename p... |
1530 |
rtnl_notify(skb, net, portid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL); |
1ce85fe40 netlink: change n... |
1531 |
return; |
d6062cbbd [IPv4] address: C... |
1532 1533 |
errout: if (err < 0) |
4b8aa9abe [NETNS]: Process ... |
1534 |
rtnl_set_sk_err(net, RTNLGRP_IPV4_IFADDR, err); |
1da177e4c Linux-2.6.12-rc2 |
1535 |
} |
9f0f7272a ipv4: AF_INET lin... |
1536 1537 |
static size_t inet_get_link_af_size(const struct net_device *dev) { |
1fc19aff8 net: fix two lock... |
1538 |
struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
9f0f7272a ipv4: AF_INET lin... |
1539 1540 1541 1542 1543 1544 1545 1546 1547 |
if (!in_dev) return 0; return nla_total_size(IPV4_DEVCONF_MAX * 4); /* IFLA_INET_CONF */ } static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev) { |
1fc19aff8 net: fix two lock... |
1548 |
struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr); |
9f0f7272a ipv4: AF_INET lin... |
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 |
struct nlattr *nla; int i; if (!in_dev) return -ENODATA; nla = nla_reserve(skb, IFLA_INET_CONF, IPV4_DEVCONF_MAX * 4); if (nla == NULL) 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... |
1568 1569 |
static int inet_validate_link_af(const struct net_device *dev, const struct nlattr *nla) |
9f0f7272a ipv4: AF_INET lin... |
1570 |
{ |
9f0f7272a ipv4: AF_INET lin... |
1571 1572 |
struct nlattr *a, *tb[IFLA_INET_MAX+1]; int err, rem; |
f7fce74e3 net: kill an RCU ... |
1573 |
if (dev && !__in_dev_get_rtnl(dev)) |
cf7afbfeb rtnl: make link a... |
1574 |
return -EAFNOSUPPORT; |
9f0f7272a ipv4: AF_INET lin... |
1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 |
err = nla_parse_nested(tb, IFLA_INET_MAX, nla, inet_af_policy); 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... |
1591 1592 1593 1594 1595 |
return 0; } static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla) { |
f7fce74e3 net: kill an RCU ... |
1596 |
struct in_device *in_dev = __in_dev_get_rtnl(dev); |
cf7afbfeb rtnl: make link a... |
1597 1598 1599 1600 1601 1602 1603 1604 |
struct nlattr *a, *tb[IFLA_INET_MAX+1]; int rem; if (!in_dev) return -EAFNOSUPPORT; if (nla_parse_nested(tb, IFLA_INET_MAX, nla, NULL) < 0) BUG(); |
9f0f7272a ipv4: AF_INET lin... |
1605 1606 1607 1608 1609 1610 1611 |
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... |
1612 1613 1614 1615 |
static int inet_netconf_msgsize_devconf(int type) { int size = NLMSG_ALIGN(sizeof(struct netconfmsg)) + nla_total_size(4); /* NETCONFA_IFINDEX */ |
9e5511106 rtnl/ipv4: add su... |
1616 1617 |
/* type -1 is used for ALL */ if (type == -1 || type == NETCONFA_FORWARDING) |
edc9e7489 rtnl/ipv4: use ne... |
1618 |
size += nla_total_size(4); |
cc535dfb6 rtnl/ipv4: use ne... |
1619 1620 |
if (type == -1 || type == NETCONFA_RP_FILTER) size += nla_total_size(4); |
d67b8c616 netconf: advertis... |
1621 1622 |
if (type == -1 || type == NETCONFA_MC_FORWARDING) size += nla_total_size(4); |
edc9e7489 rtnl/ipv4: use ne... |
1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 |
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; nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg), flags); if (nlh == NULL) return -EMSGSIZE; ncm = nlmsg_data(nlh); ncm->ncm_family = AF_INET; if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0) goto nla_put_failure; |
9e5511106 rtnl/ipv4: add su... |
1645 1646 |
/* type -1 is used for ALL */ if ((type == -1 || type == NETCONFA_FORWARDING) && |
edc9e7489 rtnl/ipv4: use ne... |
1647 1648 1649 |
nla_put_s32(skb, NETCONFA_FORWARDING, IPV4_DEVCONF(*devconf, FORWARDING)) < 0) goto nla_put_failure; |
cc535dfb6 rtnl/ipv4: use ne... |
1650 1651 1652 1653 |
if ((type == -1 || type == NETCONFA_RP_FILTER) && nla_put_s32(skb, NETCONFA_RP_FILTER, IPV4_DEVCONF(*devconf, RP_FILTER)) < 0) goto nla_put_failure; |
d67b8c616 netconf: advertis... |
1654 1655 1656 1657 |
if ((type == -1 || type == NETCONFA_MC_FORWARDING) && nla_put_s32(skb, NETCONFA_MC_FORWARDING, IPV4_DEVCONF(*devconf, MC_FORWARDING)) < 0) goto nla_put_failure; |
edc9e7489 rtnl/ipv4: use ne... |
1658 1659 1660 1661 1662 1663 1664 |
return nlmsg_end(skb, nlh); nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } |
d67b8c616 netconf: advertis... |
1665 1666 |
void inet_netconf_notify_devconf(struct net *net, int type, int ifindex, struct ipv4_devconf *devconf) |
edc9e7489 rtnl/ipv4: use ne... |
1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 |
{ struct sk_buff *skb; int err = -ENOBUFS; skb = nlmsg_new(inet_netconf_msgsize_devconf(type), GFP_ATOMIC); if (skb == NULL) goto errout; err = inet_netconf_fill_devconf(skb, ifindex, devconf, 0, 0, RTM_NEWNETCONF, 0, type); if (err < 0) { /* -EMSGSIZE implies BUG in inet_netconf_msgsize_devconf() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, net, 0, RTNLGRP_IPV4_NETCONF, NULL, GFP_ATOMIC); return; errout: if (err < 0) rtnl_set_sk_err(net, RTNLGRP_IPV4_NETCONF, err); } |
9e5511106 rtnl/ipv4: add su... |
1689 1690 1691 |
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... |
1692 |
[NETCONFA_RP_FILTER] = { .len = sizeof(int) }, |
9e5511106 rtnl/ipv4: add su... |
1693 1694 1695 |
}; static int inet_netconf_get_devconf(struct sk_buff *in_skb, |
661d2967b rtnetlink: Remove... |
1696 |
struct nlmsghdr *nlh) |
9e5511106 rtnl/ipv4: add su... |
1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 |
{ 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, devconf_ipv4_policy); if (err < 0) goto errout; err = EINVAL; if (!tb[NETCONFA_IFINDEX]) goto errout; ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]); switch (ifindex) { case NETCONFA_IFINDEX_ALL: devconf = net->ipv4.devconf_all; break; case NETCONFA_IFINDEX_DEFAULT: devconf = net->ipv4.devconf_dflt; break; default: dev = __dev_get_by_index(net, ifindex); if (dev == NULL) goto errout; in_dev = __in_dev_get_rtnl(dev); if (in_dev == NULL) goto errout; devconf = &in_dev->cnf; break; } err = -ENOBUFS; skb = nlmsg_new(inet_netconf_msgsize_devconf(-1), GFP_ATOMIC); if (skb == NULL) goto errout; err = inet_netconf_fill_devconf(skb, ifindex, devconf, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWNETCONF, 0, -1); 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 ... |
1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 |
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... |
1772 1773 |
cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^ net->dev_base_seq; |
7a6742003 netconf: add the ... |
1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 |
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, -1) <= 0) { rcu_read_unlock(); goto done; } |
0465277f6 ipv4: provide add... |
1791 |
nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
7a6742003 netconf: add the ... |
1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 |
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, -1) <= 0) 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, -1) <= 0) goto done; else h++; } done: cb->args[0] = h; cb->args[1] = idx; return skb->len; } |
1da177e4c Linux-2.6.12-rc2 |
1825 |
#ifdef CONFIG_SYSCTL |
c0ce9fb30 [IPV4]: Store the... |
1826 |
static void devinet_copy_dflt_conf(struct net *net, int i) |
31be30854 [IPV4]: Add defau... |
1827 1828 |
{ struct net_device *dev; |
c6d14c845 net: Introduce fo... |
1829 1830 |
rcu_read_lock(); for_each_netdev_rcu(net, dev) { |
31be30854 [IPV4]: Add defau... |
1831 |
struct in_device *in_dev; |
c6d14c845 net: Introduce fo... |
1832 |
|
31be30854 [IPV4]: Add defau... |
1833 1834 |
in_dev = __in_dev_get_rcu(dev); if (in_dev && !test_bit(i, in_dev->cnf.state)) |
9355bbd68 [IPV4]: Switch us... |
1835 |
in_dev->cnf.data[i] = net->ipv4.devconf_dflt->data[i]; |
31be30854 [IPV4]: Add defau... |
1836 |
} |
c6d14c845 net: Introduce fo... |
1837 |
rcu_read_unlock(); |
31be30854 [IPV4]: Add defau... |
1838 |
} |
c6d14c845 net: Introduce fo... |
1839 |
/* called with RTNL locked */ |
c0ce9fb30 [IPV4]: Store the... |
1840 |
static void inet_forward_change(struct net *net) |
68dd299bc [INET]: Merge sys... |
1841 1842 |
{ struct net_device *dev; |
586f12115 [IPV4]: Switch us... |
1843 |
int on = IPV4_DEVCONF_ALL(net, FORWARDING); |
68dd299bc [INET]: Merge sys... |
1844 |
|
586f12115 [IPV4]: Switch us... |
1845 |
IPV4_DEVCONF_ALL(net, ACCEPT_REDIRECTS) = !on; |
9355bbd68 [IPV4]: Switch us... |
1846 |
IPV4_DEVCONF_DFLT(net, FORWARDING) = on; |
edc9e7489 rtnl/ipv4: use ne... |
1847 1848 1849 1850 1851 1852 |
inet_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_ALL, net->ipv4.devconf_all); inet_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_DEFAULT, net->ipv4.devconf_dflt); |
68dd299bc [INET]: Merge sys... |
1853 |
|
c0ce9fb30 [IPV4]: Store the... |
1854 |
for_each_netdev(net, dev) { |
68dd299bc [INET]: Merge sys... |
1855 |
struct in_device *in_dev; |
0187bdfb0 net: Disable LRO ... |
1856 1857 |
if (on) dev_disable_lro(dev); |
68dd299bc [INET]: Merge sys... |
1858 1859 |
rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); |
edc9e7489 rtnl/ipv4: use ne... |
1860 |
if (in_dev) { |
68dd299bc [INET]: Merge sys... |
1861 |
IN_DEV_CONF_SET(in_dev, FORWARDING, on); |
edc9e7489 rtnl/ipv4: use ne... |
1862 1863 1864 |
inet_netconf_notify_devconf(net, NETCONFA_FORWARDING, dev->ifindex, &in_dev->cnf); } |
68dd299bc [INET]: Merge sys... |
1865 1866 |
rcu_read_unlock(); } |
68dd299bc [INET]: Merge sys... |
1867 |
} |
31be30854 [IPV4]: Add defau... |
1868 |
static int devinet_conf_proc(ctl_table *ctl, int write, |
8d65af789 sysctl: remove "s... |
1869 |
void __user *buffer, |
31be30854 [IPV4]: Add defau... |
1870 1871 |
size_t *lenp, loff_t *ppos) { |
d01ff0a04 ipv4: flush route... |
1872 |
int old_value = *(int *)ctl->data; |
8d65af789 sysctl: remove "s... |
1873 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
d01ff0a04 ipv4: flush route... |
1874 |
int new_value = *(int *)ctl->data; |
31be30854 [IPV4]: Add defau... |
1875 1876 1877 |
if (write) { struct ipv4_devconf *cnf = ctl->extra1; |
c0ce9fb30 [IPV4]: Store the... |
1878 |
struct net *net = ctl->extra2; |
31be30854 [IPV4]: Add defau... |
1879 1880 1881 |
int i = (int *)ctl->data - cnf->data; set_bit(i, cnf->state); |
9355bbd68 [IPV4]: Switch us... |
1882 |
if (cnf == net->ipv4.devconf_dflt) |
c0ce9fb30 [IPV4]: Store the... |
1883 |
devinet_copy_dflt_conf(net, i); |
d0daebc3d ipv4: Add interfa... |
1884 1885 |
if (i == IPV4_DEVCONF_ACCEPT_LOCAL - 1 || i == IPV4_DEVCONF_ROUTE_LOCALNET - 1) |
d01ff0a04 ipv4: flush route... |
1886 |
if ((new_value == 0) && (old_value != 0)) |
4ccfe6d41 ipv4/route: arg d... |
1887 |
rt_cache_flush(net); |
cc535dfb6 rtnl/ipv4: use ne... |
1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 |
if (i == IPV4_DEVCONF_RP_FILTER - 1 && new_value != old_value) { int ifindex; if (cnf == net->ipv4.devconf_dflt) ifindex = NETCONFA_IFINDEX_DEFAULT; else if (cnf == net->ipv4.devconf_all) ifindex = NETCONFA_IFINDEX_ALL; else { struct in_device *idev = container_of(cnf, struct in_device, cnf); ifindex = idev->dev->ifindex; } inet_netconf_notify_devconf(net, NETCONFA_RP_FILTER, ifindex, cnf); } |
31be30854 [IPV4]: Add defau... |
1905 1906 1907 1908 |
} return ret; } |
1da177e4c Linux-2.6.12-rc2 |
1909 |
static int devinet_sysctl_forward(ctl_table *ctl, int write, |
8d65af789 sysctl: remove "s... |
1910 |
void __user *buffer, |
1da177e4c Linux-2.6.12-rc2 |
1911 1912 1913 1914 |
size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; |
88af182e3 net: Fix sysctl r... |
1915 |
loff_t pos = *ppos; |
8d65af789 sysctl: remove "s... |
1916 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4c Linux-2.6.12-rc2 |
1917 1918 |
if (write && *valp != val) { |
c0ce9fb30 [IPV4]: Store the... |
1919 |
struct net *net = ctl->extra2; |
0187bdfb0 net: Disable LRO ... |
1920 |
if (valp != &IPV4_DEVCONF_DFLT(net, FORWARDING)) { |
88af182e3 net: Fix sysctl r... |
1921 1922 1923 1924 |
if (!rtnl_trylock()) { /* Restore the original values before restarting */ *valp = val; *ppos = pos; |
9b8adb5ea net: Fix devinet_... |
1925 |
return restart_syscall(); |
88af182e3 net: Fix sysctl r... |
1926 |
} |
0187bdfb0 net: Disable LRO ... |
1927 1928 |
if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING)) { inet_forward_change(net); |
edc9e7489 rtnl/ipv4: use ne... |
1929 |
} else { |
0187bdfb0 net: Disable LRO ... |
1930 1931 1932 |
struct ipv4_devconf *cnf = ctl->extra1; struct in_device *idev = container_of(cnf, struct in_device, cnf); |
edc9e7489 rtnl/ipv4: use ne... |
1933 1934 1935 1936 1937 1938 |
if (*valp) dev_disable_lro(idev->dev); inet_netconf_notify_devconf(net, NETCONFA_FORWARDING, idev->dev->ifindex, cnf); |
0187bdfb0 net: Disable LRO ... |
1939 1940 |
} rtnl_unlock(); |
4ccfe6d41 ipv4/route: arg d... |
1941 |
rt_cache_flush(net); |
edc9e7489 rtnl/ipv4: use ne... |
1942 1943 1944 1945 |
} else inet_netconf_notify_devconf(net, NETCONFA_FORWARDING, NETCONFA_IFINDEX_DEFAULT, net->ipv4.devconf_dflt); |
1da177e4c Linux-2.6.12-rc2 |
1946 1947 1948 1949 |
} return ret; } |
323e126f0 ipv4: Don't pre-s... |
1950 1951 1952 |
static int ipv4_doint_and_flush(ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
1953 1954 1955 |
{ int *valp = ctl->data; int val = *valp; |
8d65af789 sysctl: remove "s... |
1956 |
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
76e6ebfb4 netns: add namesp... |
1957 |
struct net *net = ctl->extra2; |
1da177e4c Linux-2.6.12-rc2 |
1958 1959 |
if (write && *valp != val) |
4ccfe6d41 ipv4/route: arg d... |
1960 |
rt_cache_flush(net); |
1da177e4c Linux-2.6.12-rc2 |
1961 1962 1963 |
return ret; } |
f8572d8f2 sysctl net: Remov... |
1964 |
#define DEVINET_SYSCTL_ENTRY(attr, name, mval, proc) \ |
42f811b8b [IPV4]: Convert I... |
1965 |
{ \ |
42f811b8b [IPV4]: Convert I... |
1966 1967 |
.procname = name, \ .data = ipv4_devconf.data + \ |
02291680f net ipv4: Decoupl... |
1968 |
IPV4_DEVCONF_ ## attr - 1, \ |
42f811b8b [IPV4]: Convert I... |
1969 1970 1971 |
.maxlen = sizeof(int), \ .mode = mval, \ .proc_handler = proc, \ |
31be30854 [IPV4]: Add defau... |
1972 |
.extra1 = &ipv4_devconf, \ |
42f811b8b [IPV4]: Convert I... |
1973 1974 1975 |
} #define DEVINET_SYSCTL_RW_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
1976 |
DEVINET_SYSCTL_ENTRY(attr, name, 0644, devinet_conf_proc) |
42f811b8b [IPV4]: Convert I... |
1977 1978 |
#define DEVINET_SYSCTL_RO_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
1979 |
DEVINET_SYSCTL_ENTRY(attr, name, 0444, devinet_conf_proc) |
42f811b8b [IPV4]: Convert I... |
1980 |
|
f8572d8f2 sysctl net: Remov... |
1981 1982 |
#define DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, proc) \ DEVINET_SYSCTL_ENTRY(attr, name, 0644, proc) |
42f811b8b [IPV4]: Convert I... |
1983 1984 |
#define DEVINET_SYSCTL_FLUSHING_ENTRY(attr, name) \ |
f8572d8f2 sysctl net: Remov... |
1985 |
DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, ipv4_doint_and_flush) |
42f811b8b [IPV4]: Convert I... |
1986 |
|
1da177e4c Linux-2.6.12-rc2 |
1987 1988 |
static struct devinet_sysctl_table { struct ctl_table_header *sysctl_header; |
02291680f net ipv4: Decoupl... |
1989 |
struct ctl_table devinet_vars[__IPV4_DEVCONF_MAX]; |
1da177e4c Linux-2.6.12-rc2 |
1990 1991 |
} devinet_sysctl = { .devinet_vars = { |
42f811b8b [IPV4]: Convert I... |
1992 |
DEVINET_SYSCTL_COMPLEX_ENTRY(FORWARDING, "forwarding", |
f8572d8f2 sysctl net: Remov... |
1993 |
devinet_sysctl_forward), |
42f811b8b [IPV4]: Convert I... |
1994 1995 1996 1997 1998 1999 2000 2001 2002 |
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... |
2003 |
DEVINET_SYSCTL_RW_ENTRY(ACCEPT_LOCAL, "accept_local"), |
28f6aeea3 net: restore ip s... |
2004 |
DEVINET_SYSCTL_RW_ENTRY(SRC_VMARK, "src_valid_mark"), |
42f811b8b [IPV4]: Convert I... |
2005 2006 2007 2008 2009 2010 2011 2012 2013 |
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... |
2014 |
DEVINET_SYSCTL_RW_ENTRY(ARP_NOTIFY, "arp_notify"), |
65324144b net: RFC3069, pri... |
2015 |
DEVINET_SYSCTL_RW_ENTRY(PROXY_ARP_PVLAN, "proxy_arp_pvlan"), |
42f811b8b [IPV4]: Convert I... |
2016 2017 2018 2019 2020 2021 2022 |
DEVINET_SYSCTL_FLUSHING_ENTRY(NOXFRM, "disable_xfrm"), DEVINET_SYSCTL_FLUSHING_ENTRY(NOPOLICY, "disable_policy"), DEVINET_SYSCTL_FLUSHING_ENTRY(FORCE_IGMP_VERSION, "force_igmp_version"), DEVINET_SYSCTL_FLUSHING_ENTRY(PROMOTE_SECONDARIES, "promote_secondaries"), |
d0daebc3d ipv4: Add interfa... |
2023 2024 |
DEVINET_SYSCTL_FLUSHING_ENTRY(ROUTE_LOCALNET, "route_localnet"), |
1da177e4c Linux-2.6.12-rc2 |
2025 |
}, |
1da177e4c Linux-2.6.12-rc2 |
2026 |
}; |
ea40b324d [IPV4]: Make __de... |
2027 |
static int __devinet_sysctl_register(struct net *net, char *dev_name, |
f8572d8f2 sysctl net: Remov... |
2028 |
struct ipv4_devconf *p) |
1da177e4c Linux-2.6.12-rc2 |
2029 2030 |
{ int i; |
9fa896429 [IPV4]: Cleanup t... |
2031 |
struct devinet_sysctl_table *t; |
8607ddb86 net ipv4: Convert... |
2032 |
char path[sizeof("net/ipv4/conf/") + IFNAMSIZ]; |
bfada697b [IPV4]: Use ctl p... |
2033 |
|
9fa896429 [IPV4]: Cleanup t... |
2034 |
t = kmemdup(&devinet_sysctl, sizeof(*t), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2035 |
if (!t) |
9fa896429 [IPV4]: Cleanup t... |
2036 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2037 2038 |
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... |
2039 |
t->devinet_vars[i].extra1 = p; |
c0ce9fb30 [IPV4]: Store the... |
2040 |
t->devinet_vars[i].extra2 = net; |
1da177e4c Linux-2.6.12-rc2 |
2041 |
} |
8607ddb86 net ipv4: Convert... |
2042 |
snprintf(path, sizeof(path), "net/ipv4/conf/%s", dev_name); |
1da177e4c Linux-2.6.12-rc2 |
2043 |
|
8607ddb86 net ipv4: Convert... |
2044 |
t->sysctl_header = register_net_sysctl(net, path, t->devinet_vars); |
1da177e4c Linux-2.6.12-rc2 |
2045 |
if (!t->sysctl_header) |
8607ddb86 net ipv4: Convert... |
2046 |
goto free; |
1da177e4c Linux-2.6.12-rc2 |
2047 2048 |
p->sysctl = t; |
ea40b324d [IPV4]: Make __de... |
2049 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
2050 |
|
9fa896429 [IPV4]: Cleanup t... |
2051 |
free: |
1da177e4c Linux-2.6.12-rc2 |
2052 |
kfree(t); |
9fa896429 [IPV4]: Cleanup t... |
2053 |
out: |
ea40b324d [IPV4]: Make __de... |
2054 |
return -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
2055 |
} |
51602b2a5 [IPV4]: Cleanup s... |
2056 2057 2058 2059 2060 2061 2062 2063 |
static void __devinet_sysctl_unregister(struct ipv4_devconf *cnf) { struct devinet_sysctl_table *t = cnf->sysctl; if (t == NULL) return; cnf->sysctl = NULL; |
ff538818f sysctl: net: call... |
2064 |
unregister_net_sysctl_table(t->sysctl_header); |
51602b2a5 [IPV4]: Cleanup s... |
2065 2066 |
kfree(t); } |
66f27a520 [IPV4]: Unify and... |
2067 2068 |
static void devinet_sysctl_register(struct in_device *idev) { |
54716e3be net neigh: Decoup... |
2069 |
neigh_sysctl_register(idev->dev, idev->arp_parms, "ipv4", NULL); |
c346dca10 [NET] NETNS: Omit... |
2070 |
__devinet_sysctl_register(dev_net(idev->dev), idev->dev->name, |
f8572d8f2 sysctl net: Remov... |
2071 |
&idev->cnf); |
66f27a520 [IPV4]: Unify and... |
2072 |
} |
51602b2a5 [IPV4]: Cleanup s... |
2073 |
static void devinet_sysctl_unregister(struct in_device *idev) |
1da177e4c Linux-2.6.12-rc2 |
2074 |
{ |
51602b2a5 [IPV4]: Cleanup s... |
2075 2076 |
__devinet_sysctl_unregister(&idev->cnf); neigh_sysctl_unregister(idev->arp_parms); |
1da177e4c Linux-2.6.12-rc2 |
2077 |
} |
1da177e4c Linux-2.6.12-rc2 |
2078 |
|
68dd299bc [INET]: Merge sys... |
2079 2080 |
static struct ctl_table ctl_forward_entry[] = { { |
68dd299bc [INET]: Merge sys... |
2081 2082 |
.procname = "ip_forward", .data = &ipv4_devconf.data[ |
02291680f net ipv4: Decoupl... |
2083 |
IPV4_DEVCONF_FORWARDING - 1], |
68dd299bc [INET]: Merge sys... |
2084 2085 2086 |
.maxlen = sizeof(int), .mode = 0644, .proc_handler = devinet_sysctl_forward, |
68dd299bc [INET]: Merge sys... |
2087 |
.extra1 = &ipv4_devconf, |
c0ce9fb30 [IPV4]: Store the... |
2088 |
.extra2 = &init_net, |
68dd299bc [INET]: Merge sys... |
2089 2090 2091 |
}, { }, }; |
2a75de0c1 [NETNS]: Should b... |
2092 |
#endif |
68dd299bc [INET]: Merge sys... |
2093 |
|
752d14dc6 [IPV4]: Move the ... |
2094 2095 2096 |
static __net_init int devinet_init_net(struct net *net) { int err; |
752d14dc6 [IPV4]: Move the ... |
2097 |
struct ipv4_devconf *all, *dflt; |
2a75de0c1 [NETNS]: Should b... |
2098 2099 |
#ifdef CONFIG_SYSCTL struct ctl_table *tbl = ctl_forward_entry; |
752d14dc6 [IPV4]: Move the ... |
2100 |
struct ctl_table_header *forw_hdr; |
2a75de0c1 [NETNS]: Should b... |
2101 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2102 2103 2104 2105 |
err = -ENOMEM; all = &ipv4_devconf; dflt = &ipv4_devconf_dflt; |
752d14dc6 [IPV4]: Move the ... |
2106 |
|
09ad9bc75 net: use net_eq t... |
2107 |
if (!net_eq(net, &init_net)) { |
752d14dc6 [IPV4]: Move the ... |
2108 2109 2110 2111 2112 2113 2114 |
all = kmemdup(all, sizeof(ipv4_devconf), GFP_KERNEL); if (all == NULL) goto err_alloc_all; dflt = kmemdup(dflt, sizeof(ipv4_devconf_dflt), GFP_KERNEL); if (dflt == NULL) goto err_alloc_dflt; |
2a75de0c1 [NETNS]: Should b... |
2115 |
#ifdef CONFIG_SYSCTL |
752d14dc6 [IPV4]: Move the ... |
2116 2117 2118 |
tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL); if (tbl == NULL) goto err_alloc_ctl; |
02291680f net ipv4: Decoupl... |
2119 |
tbl[0].data = &all->data[IPV4_DEVCONF_FORWARDING - 1]; |
752d14dc6 [IPV4]: Move the ... |
2120 2121 |
tbl[0].extra1 = all; tbl[0].extra2 = net; |
2a75de0c1 [NETNS]: Should b... |
2122 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2123 2124 2125 |
} #ifdef CONFIG_SYSCTL |
f8572d8f2 sysctl net: Remov... |
2126 |
err = __devinet_sysctl_register(net, "all", all); |
752d14dc6 [IPV4]: Move the ... |
2127 2128 |
if (err < 0) goto err_reg_all; |
f8572d8f2 sysctl net: Remov... |
2129 |
err = __devinet_sysctl_register(net, "default", dflt); |
752d14dc6 [IPV4]: Move the ... |
2130 2131 2132 2133 |
if (err < 0) goto err_reg_dflt; err = -ENOMEM; |
8607ddb86 net ipv4: Convert... |
2134 |
forw_hdr = register_net_sysctl(net, "net/ipv4", tbl); |
752d14dc6 [IPV4]: Move the ... |
2135 2136 |
if (forw_hdr == NULL) goto err_reg_ctl; |
2a75de0c1 [NETNS]: Should b... |
2137 |
net->ipv4.forw_hdr = forw_hdr; |
752d14dc6 [IPV4]: Move the ... |
2138 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 |
net->ipv4.devconf_all = all; net->ipv4.devconf_dflt = dflt; return 0; #ifdef CONFIG_SYSCTL err_reg_ctl: __devinet_sysctl_unregister(dflt); err_reg_dflt: __devinet_sysctl_unregister(all); err_reg_all: if (tbl != ctl_forward_entry) kfree(tbl); |
752d14dc6 [IPV4]: Move the ... |
2151 |
err_alloc_ctl: |
2a75de0c1 [NETNS]: Should b... |
2152 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 |
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... |
2164 |
#ifdef CONFIG_SYSCTL |
752d14dc6 [IPV4]: Move the ... |
2165 2166 2167 |
struct ctl_table *tbl; tbl = net->ipv4.forw_hdr->ctl_table_arg; |
752d14dc6 [IPV4]: Move the ... |
2168 2169 2170 |
unregister_net_sysctl_table(net->ipv4.forw_hdr); __devinet_sysctl_unregister(net->ipv4.devconf_dflt); __devinet_sysctl_unregister(net->ipv4.devconf_all); |
752d14dc6 [IPV4]: Move the ... |
2171 |
kfree(tbl); |
2a75de0c1 [NETNS]: Should b... |
2172 |
#endif |
752d14dc6 [IPV4]: Move the ... |
2173 2174 2175 2176 2177 2178 2179 2180 |
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, }; |
9f0f7272a ipv4: AF_INET lin... |
2181 2182 2183 2184 |
static struct rtnl_af_ops inet_af_ops = { .family = AF_INET, .fill_link_af = inet_fill_link_af, .get_link_af_size = inet_get_link_af_size, |
cf7afbfeb rtnl: make link a... |
2185 2186 |
.validate_link_af = inet_validate_link_af, .set_link_af = inet_set_link_af, |
9f0f7272a ipv4: AF_INET lin... |
2187 |
}; |
1da177e4c Linux-2.6.12-rc2 |
2188 2189 |
void __init devinet_init(void) { |
fd23c3b31 ipv4: Add hash ta... |
2190 2191 2192 2193 |
int i; for (i = 0; i < IN4_ADDR_HSIZE; i++) INIT_HLIST_HEAD(&inet_addr_lst[i]); |
752d14dc6 [IPV4]: Move the ... |
2194 |
register_pernet_subsys(&devinet_ops); |
1da177e4c Linux-2.6.12-rc2 |
2195 2196 |
register_gifconf(PF_INET, inet_gifconf); register_netdevice_notifier(&ip_netdev_notifier); |
63f3444fb [IPv4]: Use rtnl ... |
2197 |
|
5c766d642 ipv4: introduce a... |
2198 |
schedule_delayed_work(&check_lifetime_work, 0); |
9f0f7272a ipv4: AF_INET lin... |
2199 |
rtnl_af_register(&inet_af_ops); |
c7ac8679b rtnetlink: Comput... |
2200 2201 2202 |
rtnl_register(PF_INET, RTM_NEWADDR, inet_rtm_newaddr, NULL, NULL); rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL, NULL); rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr, NULL); |
9e5511106 rtnl/ipv4: add su... |
2203 |
rtnl_register(PF_INET, RTM_GETNETCONF, inet_netconf_get_devconf, |
7a6742003 netconf: add the ... |
2204 |
inet_netconf_dump_devconf, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2205 |
} |