diff options
Diffstat (limited to 'net/ipv6')
42 files changed, 1167 insertions, 688 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 6c7fa0853fc7..0b239fc1816e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -108,11 +108,12 @@ static inline u32 cstamp_delta(unsigned long cstamp) } #ifdef CONFIG_SYSCTL -static void addrconf_sysctl_register(struct inet6_dev *idev); +static int addrconf_sysctl_register(struct inet6_dev *idev); static void addrconf_sysctl_unregister(struct inet6_dev *idev); #else -static inline void addrconf_sysctl_register(struct inet6_dev *idev) +static inline int addrconf_sysctl_register(struct inet6_dev *idev) { + return 0; } static inline void addrconf_sysctl_unregister(struct inet6_dev *idev) @@ -186,6 +187,7 @@ static struct ipv6_devconf ipv6_devconf __read_mostly = { .max_desync_factor = MAX_DESYNC_FACTOR, .max_addresses = IPV6_MAX_ADDRESSES, .accept_ra_defrtr = 1, + .accept_ra_from_local = 0, .accept_ra_pinfo = 1, #ifdef CONFIG_IPV6_ROUTER_PREF .accept_ra_rtr_pref = 1, @@ -222,6 +224,7 @@ static struct ipv6_devconf ipv6_devconf_dflt __read_mostly = { .max_desync_factor = MAX_DESYNC_FACTOR, .max_addresses = IPV6_MAX_ADDRESSES, .accept_ra_defrtr = 1, + .accept_ra_from_local = 0, .accept_ra_pinfo = 1, #ifdef CONFIG_IPV6_ROUTER_PREF .accept_ra_rtr_pref = 1, @@ -275,19 +278,14 @@ static int snmp6_alloc_dev(struct inet6_dev *idev) { int i; - if (snmp_mib_init((void __percpu **)idev->stats.ipv6, - sizeof(struct ipstats_mib), - __alignof__(struct ipstats_mib)) < 0) + idev->stats.ipv6 = alloc_percpu(struct ipstats_mib); + if (!idev->stats.ipv6) goto err_ip; for_each_possible_cpu(i) { struct ipstats_mib *addrconf_stats; - addrconf_stats = per_cpu_ptr(idev->stats.ipv6[0], i); - u64_stats_init(&addrconf_stats->syncp); -#if SNMP_ARRAY_SZ == 2 - addrconf_stats = per_cpu_ptr(idev->stats.ipv6[1], i); + addrconf_stats = per_cpu_ptr(idev->stats.ipv6, i); u64_stats_init(&addrconf_stats->syncp); -#endif } @@ -305,7 +303,7 @@ static int snmp6_alloc_dev(struct inet6_dev *idev) err_icmpmsg: kfree(idev->stats.icmpv6dev); err_icmp: - snmp_mib_free((void __percpu **)idev->stats.ipv6); + free_percpu(idev->stats.ipv6); err_ip: return -ENOMEM; } @@ -313,16 +311,16 @@ err_ip: static struct inet6_dev *ipv6_add_dev(struct net_device *dev) { struct inet6_dev *ndev; + int err = -ENOMEM; ASSERT_RTNL(); if (dev->mtu < IPV6_MIN_MTU) - return NULL; + return ERR_PTR(-EINVAL); ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL); - if (ndev == NULL) - return NULL; + return ERR_PTR(err); rwlock_init(&ndev->lock); ndev->dev = dev; @@ -335,7 +333,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl); if (ndev->nd_parms == NULL) { kfree(ndev); - return NULL; + return ERR_PTR(err); } if (ndev->cnf.forwarding) dev_disable_lro(dev); @@ -349,17 +347,14 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) neigh_parms_release(&nd_tbl, ndev->nd_parms); dev_put(dev); kfree(ndev); - return NULL; + return ERR_PTR(err); } if (snmp6_register_dev(ndev) < 0) { ADBG(KERN_WARNING "%s: cannot create /proc/net/dev_snmp6/%s\n", __func__, dev->name); - neigh_parms_release(&nd_tbl, ndev->nd_parms); - ndev->dead = 1; - in6_dev_finish_destroy(ndev); - return NULL; + goto err_release; } /* One reference from device. We must do this before @@ -397,7 +392,12 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) ipv6_mc_init_dev(ndev); ndev->tstamp = jiffies; - addrconf_sysctl_register(ndev); + err = addrconf_sysctl_register(ndev); + if (err) { + ipv6_mc_destroy_dev(ndev); + del_timer(&ndev->regen_timer); + goto err_release; + } /* protected by rtnl_lock */ rcu_assign_pointer(dev->ip6_ptr, ndev); @@ -412,6 +412,12 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters); return ndev; + +err_release: + neigh_parms_release(&nd_tbl, ndev->nd_parms); + ndev->dead = 1; + in6_dev_finish_destroy(ndev); + return ERR_PTR(err); } static struct inet6_dev *ipv6_find_idev(struct net_device *dev) @@ -423,7 +429,7 @@ static struct inet6_dev *ipv6_find_idev(struct net_device *dev) idev = __in6_dev_get(dev); if (!idev) { idev = ipv6_add_dev(dev); - if (!idev) + if (IS_ERR(idev)) return NULL; } @@ -2504,8 +2510,8 @@ static int inet6_addr_add(struct net *net, int ifindex, return PTR_ERR(ifp); } -static int inet6_addr_del(struct net *net, int ifindex, const struct in6_addr *pfx, - unsigned int plen) +static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags, + const struct in6_addr *pfx, unsigned int plen) { struct inet6_ifaddr *ifp; struct inet6_dev *idev; @@ -2528,7 +2534,12 @@ static int inet6_addr_del(struct net *net, int ifindex, const struct in6_addr *p in6_ifa_hold(ifp); read_unlock_bh(&idev->lock); + if (!(ifp->flags & IFA_F_TEMPORARY) && + (ifa_flags & IFA_F_MANAGETEMPADDR)) + manage_tempaddrs(idev, ifp, 0, 0, false, + jiffies); ipv6_del_addr(ifp); + addrconf_verify_rtnl(); return 0; } } @@ -2568,7 +2579,7 @@ int addrconf_del_ifaddr(struct net *net, void __user *arg) return -EFAULT; rtnl_lock(); - err = inet6_addr_del(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, + err = inet6_addr_del(net, ireq.ifr6_ifindex, 0, &ireq.ifr6_addr, ireq.ifr6_prefixlen); rtnl_unlock(); return err; @@ -2728,9 +2739,25 @@ static void addrconf_add_linklocal(struct inet6_dev *idev, const struct in6_addr } } +static void addrconf_addr_gen(struct inet6_dev *idev, bool prefix_route) +{ + if (idev->addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64) { + struct in6_addr addr; + + ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0); + /* addrconf_add_linklocal also adds a prefix_route and we + * only need to care about prefix routes if ipv6_generate_eui64 + * couldn't generate one. + */ + if (ipv6_generate_eui64(addr.s6_addr + 8, idev->dev) == 0) + addrconf_add_linklocal(idev, &addr); + else if (prefix_route) + addrconf_prefix_route(&addr, 64, idev->dev, 0, 0); + } +} + static void addrconf_dev_config(struct net_device *dev) { - struct in6_addr addr; struct inet6_dev *idev; ASSERT_RTNL(); @@ -2751,11 +2778,7 @@ static void addrconf_dev_config(struct net_device *dev) if (IS_ERR(idev)) return; - memset(&addr, 0, sizeof(struct in6_addr)); - addr.s6_addr32[0] = htonl(0xFE800000); - - if (ipv6_generate_eui64(addr.s6_addr + 8, dev) == 0) - addrconf_add_linklocal(idev, &addr); + addrconf_addr_gen(idev, false); } #if IS_ENABLED(CONFIG_IPV6_SIT) @@ -2777,11 +2800,7 @@ static void addrconf_sit_config(struct net_device *dev) } if (dev->priv_flags & IFF_ISATAP) { - struct in6_addr addr; - - ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0); - if (!ipv6_generate_eui64(addr.s6_addr + 8, dev)) - addrconf_add_linklocal(idev, &addr); + addrconf_addr_gen(idev, false); return; } @@ -2796,7 +2815,6 @@ static void addrconf_sit_config(struct net_device *dev) static void addrconf_gre_config(struct net_device *dev) { struct inet6_dev *idev; - struct in6_addr addr; ASSERT_RTNL(); @@ -2805,26 +2823,10 @@ static void addrconf_gre_config(struct net_device *dev) return; } - ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0); - if (!ipv6_generate_eui64(addr.s6_addr + 8, dev)) - addrconf_add_linklocal(idev, &addr); - else - addrconf_prefix_route(&addr, 64, dev, 0, 0); + addrconf_addr_gen(idev, true); } #endif -static inline int -ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev) -{ - struct in6_addr lladdr; - - if (!ipv6_get_lladdr(link_dev, &lladdr, IFA_F_TENTATIVE)) { - addrconf_add_linklocal(idev, &lladdr); - return 0; - } - return -1; -} - static int addrconf_notify(struct notifier_block *this, unsigned long event, void *ptr) { @@ -2837,8 +2839,8 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, case NETDEV_REGISTER: if (!idev && dev->mtu >= IPV6_MIN_MTU) { idev = ipv6_add_dev(dev); - if (!idev) - return notifier_from_errno(-ENOMEM); + if (IS_ERR(idev)) + return notifier_from_errno(PTR_ERR(idev)); } break; @@ -2858,7 +2860,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, if (!idev && dev->mtu >= IPV6_MIN_MTU) idev = ipv6_add_dev(dev); - if (idev) { + if (!IS_ERR_OR_NULL(idev)) { idev->if_flags |= IF_READY; run_pending = 1; } @@ -2901,7 +2903,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, break; } - if (idev) { + if (!IS_ERR_OR_NULL(idev)) { if (run_pending) addrconf_dad_run(idev); @@ -2936,7 +2938,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, if (!idev && dev->mtu >= IPV6_MIN_MTU) { idev = ipv6_add_dev(dev); - if (idev) + if (!IS_ERR(idev)) break; } @@ -2957,10 +2959,14 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, if (idev) { snmp6_unregister_dev(idev); addrconf_sysctl_unregister(idev); - addrconf_sysctl_register(idev); - err = snmp6_register_dev(idev); + err = addrconf_sysctl_register(idev); if (err) return notifier_from_errno(err); + err = snmp6_register_dev(idev); + if (err) { + addrconf_sysctl_unregister(idev); + return notifier_from_errno(err); + } } break; @@ -3743,6 +3749,7 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) struct ifaddrmsg *ifm; struct nlattr *tb[IFA_MAX+1]; struct in6_addr *pfx, *peer_pfx; + u32 ifa_flags; int err; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); @@ -3754,7 +3761,13 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) if (pfx == NULL) return -EINVAL; - return inet6_addr_del(net, ifm->ifa_index, pfx, ifm->ifa_prefixlen); + ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; + + /* We ignore other flags so far. */ + ifa_flags &= IFA_F_MANAGETEMPADDR; + + return inet6_addr_del(net, ifm->ifa_index, ifa_flags, pfx, + ifm->ifa_prefixlen); } static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags, @@ -4326,6 +4339,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf, array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao; array[DEVCONF_NDISC_NOTIFY] = cnf->ndisc_notify; array[DEVCONF_SUPPRESS_FRAG_NDISC] = cnf->suppress_frag_ndisc; + array[DEVCONF_ACCEPT_RA_FROM_LOCAL] = cnf->accept_ra_from_local; } static inline size_t inet6_ifla6_size(void) @@ -4363,7 +4377,7 @@ static inline void __snmp6_fill_statsdev(u64 *stats, atomic_long_t *mib, memset(&stats[items], 0, pad); } -static inline void __snmp6_fill_stats64(u64 *stats, void __percpu **mib, +static inline void __snmp6_fill_stats64(u64 *stats, void __percpu *mib, int items, int bytes, size_t syncpoff) { int i; @@ -4383,7 +4397,7 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype, { switch (attrtype) { case IFLA_INET6_STATS: - __snmp6_fill_stats64(stats, (void __percpu **)idev->stats.ipv6, + __snmp6_fill_stats64(stats, idev->stats.ipv6, IPSTATS_MIB_MAX, bytes, offsetof(struct ipstats_mib, syncp)); break; case IFLA_INET6_ICMP6STATS: @@ -4425,6 +4439,10 @@ static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev) nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr)); if (nla == NULL) goto nla_put_failure; + + if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->addr_gen_mode)) + goto nla_put_failure; + read_lock_bh(&idev->lock); memcpy(nla_data(nla), idev->token.s6_addr, nla_len(nla)); read_unlock_bh(&idev->lock); @@ -4529,8 +4547,21 @@ static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla) if (nla_parse_nested(tb, IFLA_INET6_MAX, nla, NULL) < 0) BUG(); - if (tb[IFLA_INET6_TOKEN]) + if (tb[IFLA_INET6_TOKEN]) { err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN])); + if (err) + return err; + } + + if (tb[IFLA_INET6_ADDR_GEN_MODE]) { + u8 mode = nla_get_u8(tb[IFLA_INET6_ADDR_GEN_MODE]); + + if (mode != IN6_ADDR_GEN_MODE_EUI64 && + mode != IN6_ADDR_GEN_MODE_NONE) + return -EINVAL; + idev->addr_gen_mode = mode; + err = 0; + } return err; } @@ -5173,6 +5204,13 @@ static struct addrconf_sysctl_table .proc_handler = proc_dointvec }, { + .procname = "accept_ra_from_local", + .data = &ipv6_devconf.accept_ra_from_local, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, + { /* sentinel */ } }, @@ -5223,12 +5261,23 @@ static void __addrconf_sysctl_unregister(struct ipv6_devconf *p) kfree(t); } -static void addrconf_sysctl_register(struct inet6_dev *idev) +static int addrconf_sysctl_register(struct inet6_dev *idev) { - neigh_sysctl_register(idev->dev, idev->nd_parms, - &ndisc_ifinfo_sysctl_change); - __addrconf_sysctl_register(dev_net(idev->dev), idev->dev->name, - idev, &idev->cnf); + int err; + + if (!sysctl_dev_name_is_allowed(idev->dev->name)) + return -EINVAL; + + err = neigh_sysctl_register(idev->dev, idev->nd_parms, + &ndisc_ifinfo_sysctl_change); + if (err) + return err; + err = __addrconf_sysctl_register(dev_net(idev->dev), idev->dev->name, + idev, &idev->cnf); + if (err) + neigh_sysctl_unregister(idev->nd_parms); + + return err; } static void addrconf_sysctl_unregister(struct inet6_dev *idev) @@ -5313,6 +5362,7 @@ static struct rtnl_af_ops inet6_ops = { int __init addrconf_init(void) { + struct inet6_dev *idev; int i, err; err = ipv6_addr_label_init(); @@ -5351,11 +5401,12 @@ int __init addrconf_init(void) * device and it being up should be removed. */ rtnl_lock(); - if (!ipv6_add_dev(init_net.loopback_dev)) - err = -ENOMEM; + idev = ipv6_add_dev(init_net.loopback_dev); rtnl_unlock(); - if (err) + if (IS_ERR(idev)) { + err = PTR_ERR(idev); goto errlo; + } for (i = 0; i < IN6_ADDR_HSIZE; i++) INIT_HLIST_HEAD(&inet6_addr_lst[i]); diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c index 4c11cbcf8308..e6960457f625 100644 --- a/net/ipv6/addrconf_core.c +++ b/net/ipv6/addrconf_core.c @@ -123,7 +123,7 @@ static void snmp6_free_dev(struct inet6_dev *idev) { kfree(idev->stats.icmpv6msgdev); kfree(idev->stats.icmpv6dev); - snmp_mib_free((void __percpu **)idev->stats.ipv6); + free_percpu(idev->stats.ipv6); } /* Nobody refers to this device, we may destroy it. */ diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c index 731e1e1722d9..fd0dc47f471d 100644 --- a/net/ipv6/addrlabel.c +++ b/net/ipv6/addrlabel.c @@ -277,7 +277,7 @@ static int __ip6addrlbl_add(struct ip6addrlbl_entry *newp, int replace) last = p; } if (last) - hlist_add_after_rcu(&last->list, &newp->list); + hlist_add_behind_rcu(&newp->list, &last->list); else hlist_add_head_rcu(&newp->list, &ip6addrlbl_table.head); out: diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index d935889f1008..2daa3a133e49 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -106,7 +106,6 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol, struct inet_protosw *answer; struct proto *answer_prot; unsigned char answer_flags; - char answer_no_check; int try_loading_module = 0; int err; @@ -162,7 +161,6 @@ lookup_protocol: sock->ops = answer->ops; answer_prot = answer->prot; - answer_no_check = answer->no_check; answer_flags = answer->flags; rcu_read_unlock(); @@ -176,7 +174,6 @@ lookup_protocol: sock_init_data(sock, sk); err = 0; - sk->sk_no_check = answer_no_check; if (INET_PROTOSW_REUSE & answer_flags) sk->sk_reuse = SK_CAN_REUSE; @@ -200,7 +197,7 @@ lookup_protocol: np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; np->mc_loop = 1; np->pmtudisc = IPV6_PMTUDISC_WANT; - np->ipv6only = net->ipv6.sysctl.bindv6only; + sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; /* Init the ipv4 part of the socket since we can have sockets * using v6 API for ipv4. @@ -297,7 +294,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) /* Binding to v4-mapped address on a v6-only socket * makes no sense */ - if (np->ipv6only) { + if (sk->sk_ipv6only) { err = -EINVAL; goto out; } @@ -374,7 +371,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) if (addr_type != IPV6_ADDR_ANY) { sk->sk_userlocks |= SOCK_BINDADDR_LOCK; if (addr_type != IPV6_ADDR_MAPPED) - np->ipv6only = 1; + sk->sk_ipv6only = 1; } if (snum) sk->sk_userlocks |= SOCK_BINDPORT_LOCK; @@ -715,33 +712,25 @@ static int __net_init ipv6_init_mibs(struct net *net) { int i; - if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, - sizeof(struct udp_mib), - __alignof__(struct udp_mib)) < 0) + net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); + if (!net->mib.udp_stats_in6) return -ENOMEM; - if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, - sizeof(struct udp_mib), - __alignof__(struct udp_mib)) < 0) + net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); + if (!net->mib.udplite_stats_in6) goto err_udplite_mib; - if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, - sizeof(struct ipstats_mib), - __alignof__(struct ipstats_mib)) < 0) + net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); + if (!net->mib.ipv6_statistics) goto err_ip_mib; for_each_possible_cpu(i) { struct ipstats_mib *af_inet6_stats; - af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[0], i); + af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); u64_stats_init(&af_inet6_stats->syncp); -#if SNMP_ARRAY_SZ == 2 - af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[1], i); - u64_stats_init(&af_inet6_stats->syncp); -#endif } - if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, - sizeof(struct icmpv6_mib), - __alignof__(struct icmpv6_mib)) < 0) + net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); + if (!net->mib.icmpv6_statistics) goto err_icmp_mib; net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), GFP_KERNEL); @@ -750,22 +739,22 @@ static int __net_init ipv6_init_mibs(struct net *net) return 0; err_icmpmsg_mib: - snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); + free_percpu(net->mib.icmpv6_statistics); err_icmp_mib: - snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); + free_percpu(net->mib.ipv6_statistics); err_ip_mib: - snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); + free_percpu(net->mib.udplite_stats_in6); err_udplite_mib: - snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); + free_percpu(net->mib.udp_stats_in6); return -ENOMEM; } static void ipv6_cleanup_mibs(struct net *net) { - snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); - snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); - snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); - snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); + free_percpu(net->mib.udp_stats_in6); + free_percpu(net->mib.udplite_stats_in6); + free_percpu(net->mib.ipv6_statistics); + free_percpu(net->mib.icmpv6_statistics); kfree(net->mib.icmpv6msg_statistics); } @@ -776,6 +765,7 @@ static int __net_init inet6_net_init(struct net *net) net->ipv6.sysctl.bindv6only = 0; net->ipv6.sysctl.icmpv6_time = 1*HZ; net->ipv6.sysctl.flowlabel_consistency = 1; + net->ipv6.sysctl.auto_flowlabels = 0; atomic_set(&net->ipv6.rt_genid, 0); err = ipv6_init_mibs(net); diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index c3bf2d2e519e..2753319524f1 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -199,6 +199,7 @@ ipv4_connected: NULL); sk->sk_state = TCP_ESTABLISHED; + ip6_set_txhash(sk); out: fl6_sock_release(flowlabel); return err; diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 7b326529e6a2..06ba3e58320b 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -400,6 +400,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) int len; int hlimit; int err = 0; + u32 mark = IP6_REPLY_MARK(net, skb->mark); if ((u8 *)hdr < skb->head || (skb_network_header(skb) + sizeof(*hdr)) > skb_tail_pointer(skb)) @@ -466,6 +467,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) fl6.daddr = hdr->saddr; if (saddr) fl6.saddr = *saddr; + fl6.flowi6_mark = mark; fl6.flowi6_oif = iif; fl6.fl6_icmp_type = type; fl6.fl6_icmp_code = code; @@ -474,6 +476,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) sk = icmpv6_xmit_lock(net); if (sk == NULL) return; + sk->sk_mark = mark; np = inet6_sk(sk); if (!icmpv6_xrlim_allow(sk, type, &fl6)) @@ -493,12 +496,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) if (IS_ERR(dst)) goto out; - if (ipv6_addr_is_multicast(&fl6.daddr)) - hlimit = np->mcast_hops; - else - hlimit = np->hop_limit; - if (hlimit < 0) - hlimit = ip6_dst_hoplimit(dst); + hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); msg.skb = skb; msg.offset = skb_network_offset(skb); @@ -556,6 +554,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb) int err = 0; int hlimit; u8 tclass; + u32 mark = IP6_REPLY_MARK(net, skb->mark); saddr = &ipv6_hdr(skb)->daddr; @@ -574,11 +573,13 @@ static void icmpv6_echo_reply(struct sk_buff *skb) fl6.saddr = *saddr; fl6.flowi6_oif = skb->dev->ifindex; fl6.fl6_icmp_type = ICMPV6_ECHO_REPLY; + fl6.flowi6_mark = mark; security_skb_classify_flow(skb, flowi6_to_flowi(&fl6)); sk = icmpv6_xmit_lock(net); if (sk == NULL) return; + sk->sk_mark = mark; np = inet6_sk(sk); if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) @@ -593,12 +594,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb) if (IS_ERR(dst)) goto out; - if (ipv6_addr_is_multicast(&fl6.daddr)) - hlimit = np->mcast_hops; - else - hlimit = np->hop_limit; - if (hlimit < 0) - hlimit = ip6_dst_hoplimit(dst); + hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); idev = __in6_dev_get(skb->dev); @@ -630,9 +626,10 @@ void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info) int inner_offset; __be16 frag_off; u8 nexthdr; + struct net *net = dev_net(skb->dev); if (!pskb_may_pull(skb, sizeof(struct ipv6hdr))) - return; + goto out; nexthdr = ((struct ipv6hdr *)skb->data)->nexthdr; if (ipv6_ext_hdr(nexthdr)) { @@ -640,14 +637,14 @@ void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info) inner_offset = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &nexthdr, &frag_off); if (inner_offset<0) - return; + goto out; } else { inner_offset = sizeof(struct ipv6hdr); } /* Checkin header including 8 bytes of inner protocol header. */ if (!pskb_may_pull(skb, inner_offset+8)) - return; + goto out; /* BUGGG_FUTURE: we should try to parse exthdrs in this packet. Without this we will not able f.e. to make source routed @@ -656,13 +653,15 @@ void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info) --ANK (980726) */ - rcu_read_lock(); ipprot = rcu_dereference(inet6_protos[nexthdr]); if (ipprot && ipprot->err_handler) ipprot->err_handler(skb, NULL, type, code, inner_offset, info); - rcu_read_unlock(); raw6_icmp_error(skb, nexthdr, type, code, inner_offset, info); + return; + +out: + ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev), ICMP6_MIB_INERRORS); } /* @@ -702,22 +701,11 @@ static int icmpv6_rcv(struct sk_buff *skb) saddr = &ipv6_hdr(skb)->saddr; daddr = &ipv6_hdr(skb)->daddr; - /* Perform checksum. */ - switch (skb->ip_summed) { - case CHECKSUM_COMPLETE: - if (!csum_ipv6_magic(saddr, daddr, skb->len, IPPROTO_ICMPV6, - skb->csum)) - break; - /* fall through */ - case CHECKSUM_NONE: - skb->csum = ~csum_unfold(csum_ipv6_magic(saddr, daddr, skb->len, - IPPROTO_ICMPV6, 0)); - if (__skb_checksum_complete(skb)) { - LIMIT_NETDEBUG(KERN_DEBUG - "ICMPv6 checksum failed [%pI6c > %pI6c]\n", - saddr, daddr); - goto csum_error; - } + if (skb_checksum_validate(skb, IPPROTO_ICMPV6, ip6_compute_pseudo)) { + LIMIT_NETDEBUG(KERN_DEBUG + "ICMPv6 checksum failed [%pI6c > %pI6c]\n", + saddr, daddr); + goto csum_error; } if (!pskb_pull(skb, sizeof(*hdr))) diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index d4ade34ab375..a245e5ddffbd 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -81,7 +81,7 @@ struct dst_entry *inet6_csk_route_req(struct sock *sk, final_p = fl6_update_dst(fl6, np->opt, &final); fl6->saddr = ireq->ir_v6_loc_addr; fl6->flowi6_oif = ireq->ir_iif; - fl6->flowi6_mark = sk->sk_mark; + fl6->flowi6_mark = ireq->ir_mark; fl6->fl6_dport = ireq->ir_rmt_port; fl6->fl6_sport = htons(ireq->ir_num); security_req_classify_flow(req, flowi6_to_flowi(fl6)); diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c index ee7a97f510cb..9a4d7322fb22 100644 --- a/net/ipv6/ip6_checksum.c +++ b/net/ipv6/ip6_checksum.c @@ -75,25 +75,50 @@ int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto) return err; } - if (uh->check == 0) { - /* RFC 2460 section 8.1 says that we SHOULD log - this error. Well, it is reasonable. - */ - LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0 for [%pI6c]:%u->[%pI6c]:%u\n", - &ipv6_hdr(skb)->saddr, ntohs(uh->source), - &ipv6_hdr(skb)->daddr, ntohs(uh->dest)); - return 1; - } - if (skb->ip_summed == CHECKSUM_COMPLETE && - !csum_ipv6_magic(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr, - skb->len, proto, skb->csum)) - skb->ip_summed = CHECKSUM_UNNECESSARY; + /* To support RFC 6936 (allow zero checksum in UDP/IPV6 for tunnels) + * we accept a checksum of zero here. When we find the socket + * for the UDP packet we'll check if that socket allows zero checksum + * for IPv6 (set by socket option). + */ + return skb_checksum_init_zero_check(skb, proto, uh->check, + ip6_compute_pseudo); +} +EXPORT_SYMBOL(udp6_csum_init); + +/* Function to set UDP checksum for an IPv6 UDP packet. This is intended + * for the simple case like when setting the checksum for a UDP tunnel. + */ +void udp6_set_csum(bool nocheck, struct sk_buff *skb, + const struct in6_addr *saddr, + const struct in6_addr *daddr, int len) +{ + struct udphdr *uh = udp_hdr(skb); + + if (nocheck) + uh->check = 0; + else if (skb_is_gso(skb)) + uh->check = ~udp_v6_check(len, saddr, daddr, 0); + else if (skb_dst(skb) && skb_dst(skb)->dev && + (skb_dst(skb)->dev->features & NETIF_F_IPV6_CSUM)) { - if (!skb_csum_unnecessary(skb)) - skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, - skb->len, proto, 0)); + BUG_ON(skb->ip_summed == CHECKSUM_PARTIAL); - return 0; + skb->ip_summed = CHECKSUM_PARTIAL; + skb->csum_start = skb_transport_header(skb) - skb->head; + skb->csum_offset = offsetof(struct udphdr, check); + uh->check = ~udp_v6_check(len, saddr, daddr, 0); + } else { + __wsum csum; + + BUG_ON(skb->ip_summed == CHECKSUM_PARTIAL); + + uh->check = 0; + csum = skb_checksum(skb, 0, len, 0); + uh->check = udp_v6_check(len, saddr, daddr, csum); + if (uh->check == 0) + uh->check = CSUM_MANGLED_0; + + skb->ip_summed = CHECKSUM_UNNECESSARY; + } } -EXPORT_SYMBOL(udp6_csum_init); +EXPORT_SYMBOL(udp6_set_csum); diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 87891f5f57b5..cb4459bd1d29 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -71,8 +71,7 @@ static DEFINE_RWLOCK(fib6_walker_lock); #define FWS_INIT FWS_L #endif -static void fib6_prune_clones(struct net *net, struct fib6_node *fn, - struct rt6_info *rt); +static void fib6_prune_clones(struct net *net, struct fib6_node *fn); static struct rt6_info *fib6_find_prefix(struct net *net, struct fib6_node *fn); static struct fib6_node *fib6_repair_tree(struct net *net, struct fib6_node *fn); static int fib6_walk(struct fib6_walker_t *w); @@ -941,7 +940,7 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info, if (!err) { fib6_start_gc(info->nl_net, rt); if (!(rt->rt6i_flags & RTF_CACHE)) - fib6_prune_clones(info->nl_net, pn, rt); + fib6_prune_clones(info->nl_net, pn); } out: @@ -1375,7 +1374,7 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info) pn = pn->parent; } #endif - fib6_prune_clones(info->nl_net, pn, rt); + fib6_prune_clones(info->nl_net, pn); } /* @@ -1601,10 +1600,9 @@ static int fib6_prune_clone(struct rt6_info *rt, void *arg) return 0; } -static void fib6_prune_clones(struct net *net, struct fib6_node *fn, - struct rt6_info *rt) +static void fib6_prune_clones(struct net *net, struct fib6_node *fn) { - fib6_clean_tree(net, fn, fib6_prune_clone, 1, rt); + fib6_clean_tree(net, fn, fib6_prune_clone, 1, NULL); } /* diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index 0961b5ef866d..4052694c6f2c 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -26,7 +26,6 @@ #include <net/sock.h> #include <net/ipv6.h> -#include <net/addrconf.h> #include <net/rawv6.h> #include <net/transp_v6.h> diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 9d921462b57f..5f19dfbc4c6a 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -72,6 +72,7 @@ struct ip6gre_net { }; static struct rtnl_link_ops ip6gre_link_ops __read_mostly; +static struct rtnl_link_ops ip6gre_tap_ops __read_mostly; static int ip6gre_tunnel_init(struct net_device *dev); static void ip6gre_tunnel_setup(struct net_device *dev); static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t); @@ -321,7 +322,8 @@ static struct ip6_tnl *ip6gre_tunnel_locate(struct net *net, else strcpy(name, "ip6gre%d"); - dev = alloc_netdev(sizeof(*t), name, ip6gre_tunnel_setup); + dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, + ip6gre_tunnel_setup); if (!dev) return NULL; @@ -353,10 +355,10 @@ failed_free: static void ip6gre_tunnel_uninit(struct net_device *dev) { - struct net *net = dev_net(dev); - struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); + struct ip6_tnl *t = netdev_priv(dev); + struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id); - ip6gre_tunnel_unlink(ign, netdev_priv(dev)); + ip6gre_tunnel_unlink(ign, t); dev_put(dev); } @@ -467,17 +469,7 @@ static int ip6gre_rcv(struct sk_buff *skb) goto drop; if (flags&GRE_CSUM) { - switch (skb->ip_summed) { - case CHECKSUM_COMPLETE: - csum = csum_fold(skb->csum); - if (!csum) - break; - /* fall through */ - case CHECKSUM_NONE: - skb->csum = 0; - csum = __skb_checksum_complete(skb); - skb->ip_summed = CHECKSUM_COMPLETE; - } + csum = skb_checksum_simple_validate(skb); offset += 4; } if (flags&GRE_KEY) { @@ -611,8 +603,8 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, int encap_limit, __u32 *pmtu) { - struct net *net = dev_net(dev); struct ip6_tnl *tunnel = netdev_priv(dev); + struct net *net = tunnel->net; struct net_device *tdev; /* Device to other host */ struct ipv6hdr *ipv6h; /* Our new IP header */ unsigned int max_headroom = 0; /* The extra header space needed */ @@ -732,7 +724,8 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, * Push down and install the IP header. */ ipv6h = ipv6_hdr(skb); - ip6_flow_hdr(ipv6h, INET_ECN_encapsulate(0, dsfield), fl6->flowlabel); + ip6_flow_hdr(ipv6h, INET_ECN_encapsulate(0, dsfield), + ip6_make_flowlabel(net, skb, fl6->flowlabel, false)); ipv6h->hop_limit = tunnel->parms.hop_limit; ipv6h->nexthdr = proto; ipv6h->saddr = fl6->saddr; @@ -979,7 +972,7 @@ static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu) int strict = (ipv6_addr_type(&p->raddr) & (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL)); - struct rt6_info *rt = rt6_lookup(dev_net(dev), + struct rt6_info *rt = rt6_lookup(t->net, &p->raddr, &p->laddr, p->link, strict); @@ -1063,13 +1056,12 @@ static int ip6gre_tunnel_ioctl(struct net_device *dev, int err = 0; struct ip6_tnl_parm2 p; struct __ip6_tnl_parm p1; - struct ip6_tnl *t; - struct net *net = dev_net(dev); + struct ip6_tnl *t = netdev_priv(dev); + struct net *net = t->net; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); switch (cmd) { case SIOCGETTUNNEL: - t = NULL; if (dev == ign->fb_tunnel_dev) { if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) { err = -EFAULT; @@ -1077,9 +1069,9 @@ static int ip6gre_tunnel_ioctl(struct net_device *dev, } ip6gre_tnl_parm_from_user(&p1, &p); t = ip6gre_tunnel_locate(net, &p1, 0); + if (t == NULL) + t = netdev_priv(dev); } - if (t == NULL) - t = netdev_priv(dev); memset(&p, 0, sizeof(p)); ip6gre_tnl_parm_to_user(&p, &t->parms); if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p))) @@ -1184,7 +1176,9 @@ static int ip6gre_header(struct sk_buff *skb, struct net_device *dev, struct ipv6hdr *ipv6h = (struct ipv6hdr *)skb_push(skb, t->hlen); __be16 *p = (__be16 *)(ipv6h+1); - ip6_flow_hdr(ipv6h, 0, t->fl.u.ip6.flowlabel); + ip6_flow_hdr(ipv6h, 0, + ip6_make_flowlabel(dev_net(dev), skb, + t->fl.u.ip6.flowlabel, false)); ipv6h->hop_limit = t->parms.hop_limit; ipv6h->nexthdr = NEXTHDR_GRE; ipv6h->saddr = t->parms.laddr; @@ -1242,7 +1236,6 @@ static void ip6gre_tunnel_setup(struct net_device *dev) dev->flags |= IFF_NOARP; dev->iflink = 0; dev->addr_len = sizeof(struct in6_addr); - dev->features |= NETIF_F_NETNS_LOCAL; dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; } @@ -1297,11 +1290,17 @@ static struct inet6_protocol ip6gre_protocol __read_mostly = { .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, }; -static void ip6gre_destroy_tunnels(struct ip6gre_net *ign, - struct list_head *head) +static void ip6gre_destroy_tunnels(struct net *net, struct list_head *head) { + struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); + struct net_device *dev, *aux; int prio; + for_each_netdev_safe(net, dev, aux) + if (dev->rtnl_link_ops == &ip6gre_link_ops || + dev->rtnl_link_ops == &ip6gre_tap_ops) + unregister_netdevice_queue(dev, head); + for (prio = 0; prio < 4; prio++) { int h; for (h = 0; h < HASH_SIZE; h++) { @@ -1310,7 +1309,12 @@ static void ip6gre_destroy_tunnels(struct ip6gre_net *ign, t = rtnl_dereference(ign->tunnels[prio][h]); while (t != NULL) { - unregister_netdevice_queue(t->dev, head); + /* If dev is in the same netns, it has already + * been added to the list by the previous loop. + */ + if (!net_eq(dev_net(t->dev), net)) + unregister_netdevice_queue(t->dev, + head); t = rtnl_dereference(t->next); } } @@ -1323,12 +1327,18 @@ static int __net_init ip6gre_init_net(struct net *net) int err; ign->fb_tunnel_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6gre0", - ip6gre_tunnel_setup); + NET_NAME_UNKNOWN, + ip6gre_tunnel_setup); if (!ign->fb_tunnel_dev) { err = -ENOMEM; goto err_alloc_dev; } dev_net_set(ign->fb_tunnel_dev, net); + /* FB netdevice is special: we have one, and only one per netns. + * Allowing to move it to another netns is clearly unsafe. + */ + ign->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL; + ip6gre_fb_tunnel_init(ign->fb_tunnel_dev); ign->fb_tunnel_dev->rtnl_link_ops = &ip6gre_link_ops; @@ -1349,12 +1359,10 @@ err_alloc_dev: static void __net_exit ip6gre_exit_net(struct net *net) { - struct ip6gre_net *ign; LIST_HEAD(list); - ign = net_generic(net, ip6gre_net_id); rtnl_lock(); - ip6gre_destroy_tunnels(ign, &list); + ip6gre_destroy_tunnels(net, &list); unregister_netdevice_many(&list); rtnl_unlock(); } @@ -1531,15 +1539,14 @@ out: static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { - struct ip6_tnl *t, *nt; - struct net *net = dev_net(dev); + struct ip6_tnl *t, *nt = netdev_priv(dev); + struct net *net = nt->net; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); struct __ip6_tnl_parm p; if (dev == ign->fb_tunnel_dev) return -EINVAL; - nt = netdev_priv(dev); ip6gre_netlink_parms(data, &p); t = ip6gre_tunnel_locate(net, &p, 0); diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index b2f091566f88..65eda2a8af48 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -97,9 +97,11 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, SKB_GSO_DODGY | SKB_GSO_TCP_ECN | SKB_GSO_GRE | + SKB_GSO_GRE_CSUM | SKB_GSO_IPIP | SKB_GSO_SIT | SKB_GSO_UDP_TUNNEL | + SKB_GSO_UDP_TUNNEL_CSUM | SKB_GSO_MPLS | SKB_GSO_TCPV6 | 0))) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index fbf11562b54c..315a55d66079 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -205,7 +205,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, if (hlimit < 0) hlimit = ip6_dst_hoplimit(dst); - ip6_flow_hdr(hdr, tclass, fl6->flowlabel); + ip6_flow_hdr(hdr, tclass, ip6_make_flowlabel(net, skb, fl6->flowlabel, + np->autoflowlabel)); hdr->payload_len = htons(seg_len); hdr->nexthdr = proto; @@ -219,7 +220,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, skb->mark = sk->sk_mark; mtu = dst_mtu(dst); - if ((skb->len <= mtu) || skb->local_df || skb_is_gso(skb)) { + if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) { IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUT, skb->len); return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, @@ -347,11 +348,11 @@ static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu) if (skb->len <= mtu) return false; - /* ipv6 conntrack defrag sets max_frag_size + local_df */ + /* ipv6 conntrack defrag sets max_frag_size + ignore_df */ if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu) return true; - if (skb->local_df) + if (skb->ignore_df) return false; if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) @@ -537,6 +538,20 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from) skb_copy_secmark(to, from); } +static void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt) +{ + static u32 ip6_idents_hashrnd __read_mostly; + u32 hash, id; + + net_get_random_once(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd)); + + hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd); + hash = __ipv6_addr_jhash(&rt->rt6i_src.addr, hash); + + id = ip_idents_reserve(hash, 1); + fhdr->identification = htonl(id); +} + int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)) { struct sk_buff *frag; @@ -559,7 +574,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)) /* We must not fragment if the socket is set to force MTU discovery * or if the skb it not generated by a local socket. */ - if (unlikely(!skb->local_df && skb->len > mtu) || + if (unlikely(!skb->ignore_df && skb->len > mtu) || (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)) { if (skb->sk && dst_allfrag(skb_dst(skb))) @@ -788,8 +803,8 @@ slow_path: /* * Copy a block of the IP datagram. */ - if (skb_copy_bits(skb, ptr, skb_transport_header(frag), len)) - BUG(); + BUG_ON(skb_copy_bits(skb, ptr, skb_transport_header(frag), + len)); left -= len; fh->frag_off = htons(offset); @@ -1142,6 +1157,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, int err; int offset = 0; __u8 tx_flags = 0; + u32 tskey = 0; if (flags&MSG_PROBE) return 0; @@ -1234,7 +1250,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, sizeof(struct frag_hdr) : 0) + rt->rt6i_nfheader_len; - if (ip6_sk_local_df(sk)) + if (ip6_sk_ignore_df(sk)) maxnonfragsize = sizeof(struct ipv6hdr) + IPV6_MAXPLEN; else maxnonfragsize = mtu; @@ -1257,9 +1273,12 @@ emsgsize: } } - /* For UDP, check if TX timestamp is enabled */ - if (sk->sk_type == SOCK_DGRAM) + if (sk->sk_type == SOCK_DGRAM || sk->sk_type == SOCK_RAW) { sock_tx_timestamp(sk, &tx_flags); + if (tx_flags & SKBTX_ANY_SW_TSTAMP && + sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID) + tskey = sk->sk_tskey++; + } /* * Let's try using as much space as possible. @@ -1367,12 +1386,6 @@ alloc_new_skb: sk->sk_allocation); if (unlikely(skb == NULL)) err = -ENOBUFS; - else { - /* Only the initial fragment - * is time stamped. - */ - tx_flags = 0; - } } if (skb == NULL) goto error; @@ -1386,8 +1399,11 @@ alloc_new_skb: skb_reserve(skb, hh_len + sizeof(struct frag_hdr) + dst_exthdrlen); - if (sk->sk_type == SOCK_DGRAM) - skb_shinfo(skb)->tx_flags = tx_flags; + /* Only the initial fragment is time stamped */ + skb_shinfo(skb)->tx_flags = tx_flags; + tx_flags = 0; + skb_shinfo(skb)->tskey = tskey; + tskey = 0; /* * Find where to start putting bytes @@ -1544,7 +1560,7 @@ int ip6_push_pending_frames(struct sock *sk) } /* Allow local fragmentation. */ - skb->local_df = ip6_sk_local_df(sk); + skb->ignore_df = ip6_sk_ignore_df(sk); *final_dst = fl6->daddr; __skb_pull(skb, skb_network_header_len(skb)); @@ -1557,7 +1573,9 @@ int ip6_push_pending_frames(struct sock *sk) skb_reset_network_header(skb); hdr = ipv6_hdr(skb); - ip6_flow_hdr(hdr, np->cork.tclass, fl6->flowlabel); + ip6_flow_hdr(hdr, np->cork.tclass, + ip6_make_flowlabel(net, skb, fl6->flowlabel, + np->autoflowlabel)); hdr->hop_limit = np->cork.hop_limit; hdr->nexthdr = proto; hdr->saddr = fl6->saddr; diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index f6a66bb4114d..f9de5a695072 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -61,6 +61,7 @@ MODULE_AUTHOR("Ville Nuorvala"); MODULE_DESCRIPTION("IPv6 tunneling device"); MODULE_LICENSE("GPL"); +MODULE_ALIAS_RTNL_LINK("ip6tnl"); MODULE_ALIAS_NETDEV("ip6tnl0"); #ifdef IP6_TNL_DEBUG @@ -314,7 +315,8 @@ static struct ip6_tnl *ip6_tnl_create(struct net *net, struct __ip6_tnl_parm *p) else sprintf(name, "ip6tnl%%d"); - dev = alloc_netdev(sizeof (*t), name, ip6_tnl_dev_setup); + dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, + ip6_tnl_dev_setup); if (dev == NULL) goto failed; @@ -1045,7 +1047,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb, skb_push(skb, sizeof(struct ipv6hdr)); skb_reset_network_header(skb); ipv6h = ipv6_hdr(skb); - ip6_flow_hdr(ipv6h, INET_ECN_encapsulate(0, dsfield), fl6->flowlabel); + ip6_flow_hdr(ipv6h, INET_ECN_encapsulate(0, dsfield), + ip6_make_flowlabel(net, skb, fl6->flowlabel, false)); ipv6h->hop_limit = t->parms.hop_limit; ipv6h->nexthdr = proto; ipv6h->saddr = fl6->saddr; @@ -1771,7 +1774,7 @@ static int __net_init ip6_tnl_init_net(struct net *net) err = -ENOMEM; ip6n->fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6tnl0", - ip6_tnl_dev_setup); + NET_NAME_UNKNOWN, ip6_tnl_dev_setup); if (!ip6n->fb_tnl_dev) goto err_alloc_dev; diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 6cc9f9371cc5..7f52fd9fa7b0 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -204,7 +204,7 @@ static struct ip6_tnl *vti6_tnl_create(struct net *net, struct __ip6_tnl_parm *p else sprintf(name, "ip6_vti%%d"); - dev = alloc_netdev(sizeof(*t), name, vti6_dev_setup); + dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, vti6_dev_setup); if (dev == NULL) goto failed; @@ -795,15 +795,12 @@ static const struct net_device_ops vti6_netdev_ops = { **/ static void vti6_dev_setup(struct net_device *dev) { - struct ip6_tnl *t; - dev->netdev_ops = &vti6_netdev_ops; dev->destructor = vti6_dev_free; dev->type = ARPHRD_TUNNEL6; dev->hard_header_len = LL_MAX_HEADER + sizeof(struct ipv6hdr); dev->mtu = ETH_DATA_LEN; - t = netdev_priv(dev); dev->flags |= IFF_NOARP; dev->addr_len = sizeof(struct in6_addr); dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; @@ -1023,7 +1020,7 @@ static int __net_init vti6_init_net(struct net *net) err = -ENOMEM; ip6n->fb_tnl_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6_vti0", - vti6_dev_setup); + NET_NAME_UNKNOWN, vti6_dev_setup); if (!ip6n->fb_tnl_dev) goto err_alloc_dev; @@ -1092,36 +1089,26 @@ static struct xfrm6_protocol vti_ipcomp6_protocol __read_mostly = { **/ static int __init vti6_tunnel_init(void) { - int err; + const char *msg; + int err; + msg = "tunnel device"; err = register_pernet_device(&vti6_net_ops); if (err < 0) - goto out_pernet; + goto pernet_dev_failed; + msg = "tunnel protocols"; err = xfrm6_protocol_register(&vti_esp6_protocol, IPPROTO_ESP); - if (err < 0) { - pr_err("%s: can't register vti6 protocol\n", __func__); - - goto out; - } - + if (err < 0) + goto xfrm_proto_esp_failed; err = xfrm6_protocol_register(&vti_ah6_protocol, IPPROTO_AH); - if (err < 0) { - xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP); - pr_err("%s: can't register vti6 protocol\n", __func__); - - goto out; - } - + if (err < 0) + goto xfrm_proto_ah_failed; err = xfrm6_protocol_register(&vti_ipcomp6_protocol, IPPROTO_COMP); - if (err < 0) { - xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH); - xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP); - pr_err("%s: can't register vti6 protocol\n", __func__); - - goto out; - } + if (err < 0) + goto xfrm_proto_comp_failed; + msg = "netlink interface"; err = rtnl_link_register(&vti6_link_ops); if (err < 0) goto rtnl_link_failed; @@ -1130,11 +1117,14 @@ static int __init vti6_tunnel_init(void) rtnl_link_failed: xfrm6_protocol_deregister(&vti_ipcomp6_protocol, IPPROTO_COMP); +xfrm_proto_comp_failed: xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH); +xfrm_proto_ah_failed: xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP); -out: +xfrm_proto_esp_failed: unregister_pernet_device(&vti6_net_ops); -out_pernet: +pernet_dev_failed: + pr_err("vti6 init: failed to register %s\n", msg); return err; } @@ -1144,13 +1134,9 @@ out_pernet: static void __exit vti6_tunnel_cleanup(void) { rtnl_link_unregister(&vti6_link_ops); - if (xfrm6_protocol_deregister(&vti_ipcomp6_protocol, IPPROTO_COMP)) - pr_info("%s: can't deregister protocol\n", __func__); - if (xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH)) - pr_info("%s: can't deregister protocol\n", __func__); - if (xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP)) - pr_info("%s: can't deregister protocol\n", __func__); - + xfrm6_protocol_deregister(&vti_ipcomp6_protocol, IPPROTO_COMP); + xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH); + xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP); unregister_pernet_device(&vti6_net_ops); } diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 8250474ab7dc..f9a3fd320d1d 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -744,7 +744,7 @@ static struct net_device *ip6mr_reg_vif(struct net *net, struct mr6_table *mrt) else sprintf(name, "pim6reg%u", mrt->id); - dev = alloc_netdev(0, name, reg_vif_setup); + dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, reg_vif_setup); if (dev == NULL) return NULL; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index edb58aff4ae7..0c289982796d 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -235,7 +235,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, if (optlen < sizeof(int) || inet_sk(sk)->inet_num) goto e_inval; - np->ipv6only = valbool; + sk->sk_ipv6only = valbool; retv = 0; break; @@ -834,6 +834,10 @@ pref_skip_coa: np->dontfrag = valbool; retv = 0; break; + case IPV6_AUTOFLOWLABEL: + np->autoflowlabel = valbool; + retv = 0; + break; } release_sock(sk); @@ -1058,7 +1062,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, } case IPV6_V6ONLY: - val = np->ipv6only; + val = sk->sk_ipv6only; break; case IPV6_RECVPKTINFO: @@ -1158,7 +1162,6 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, return -EFAULT; return 0; - break; } case IPV6_TRANSPARENT: @@ -1273,6 +1276,10 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, val = np->dontfrag; break; + case IPV6_AUTOFLOWLABEL: + val = np->autoflowlabel; + break; + default: return -ENOPROTOOPT; } diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 08b367c6b9cf..617f0958e164 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -1301,8 +1301,17 @@ int igmp6_event_query(struct sk_buff *skb) len = ntohs(ipv6_hdr(skb)->payload_len) + sizeof(struct ipv6hdr); len -= skb_network_header_len(skb); - /* Drop queries with not link local source */ - if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) + /* RFC3810 6.2 + * Upon reception of an MLD message that contains a Query, the node + * checks if the source address of the message is a valid link-local + * address, if the Hop Limit is set to 1, and if the Router Alert + * option is present in the Hop-By-Hop Options header of the IPv6 + * packet. If any of these checks fails, the packet is dropped. + */ + if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL) || + ipv6_hdr(skb)->hop_limit != 1 || + !(IP6CB(skb)->flags & IP6SKB_ROUTERALERT) || + IP6CB(skb)->ra != htons(IPV6_OPT_ROUTERALERT_MLD)) return -EINVAL; idev = __in6_dev_get(skb->dev); diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index ca8d4ea48a5d..339078f95d1b 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1070,6 +1070,9 @@ static void ndisc_router_discovery(struct sk_buff *skb) optlen = (skb_tail_pointer(skb) - skb_transport_header(skb)) - sizeof(struct ra_msg); + ND_PRINTK(2, info, + "RA: %s, dev: %s\n", + __func__, skb->dev->name); if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) { ND_PRINTK(2, warn, "RA: source address is not link-local\n"); return; @@ -1102,13 +1105,21 @@ static void ndisc_router_discovery(struct sk_buff *skb) return; } - if (!ipv6_accept_ra(in6_dev)) + if (!ipv6_accept_ra(in6_dev)) { + ND_PRINTK(2, info, + "RA: %s, did not accept ra for dev: %s\n", + __func__, skb->dev->name); goto skip_linkparms; + } #ifdef CONFIG_IPV6_NDISC_NODETYPE /* skip link-specific parameters from interior routers */ - if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) + if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) { + ND_PRINTK(2, info, + "RA: %s, nodetype is NODEFAULT, dev: %s\n", + __func__, skb->dev->name); goto skip_linkparms; + } #endif if (in6_dev->if_flags & IF_RS_SENT) { @@ -1130,11 +1141,24 @@ static void ndisc_router_discovery(struct sk_buff *skb) (ra_msg->icmph.icmp6_addrconf_other ? IF_RA_OTHERCONF : 0); - if (!in6_dev->cnf.accept_ra_defrtr) + if (!in6_dev->cnf.accept_ra_defrtr) { + ND_PRINTK(2, info, + "RA: %s, defrtr is false for dev: %s\n", + __func__, skb->dev->name); goto skip_defrtr; + } - if (ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, NULL, 0)) + /* Do not accept RA with source-addr found on local machine unless + * accept_ra_from_local is set to true. + */ + if (!in6_dev->cnf.accept_ra_from_local && + ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, + NULL, 0)) { + ND_PRINTK(2, info, + "RA from local address detected on dev: %s: default router ignored\n", + skb->dev->name); goto skip_defrtr; + } lifetime = ntohs(ra_msg->icmph.icmp6_rt_lifetime); @@ -1163,8 +1187,10 @@ static void ndisc_router_discovery(struct sk_buff *skb) rt = NULL; } + ND_PRINTK(3, info, "RA: rt: %p lifetime: %d, for dev: %s\n", + rt, lifetime, skb->dev->name); if (rt == NULL && lifetime) { - ND_PRINTK(3, dbg, "RA: adding default router\n"); + ND_PRINTK(3, info, "RA: adding default router\n"); rt = rt6_add_dflt_router(&ipv6_hdr(skb)->saddr, skb->dev, pref); if (rt == NULL) { @@ -1260,12 +1286,22 @@ skip_linkparms: NEIGH_UPDATE_F_ISROUTER); } - if (!ipv6_accept_ra(in6_dev)) + if (!ipv6_accept_ra(in6_dev)) { + ND_PRINTK(2, info, + "RA: %s, accept_ra is false for dev: %s\n", + __func__, skb->dev->name); goto out; + } #ifdef CONFIG_IPV6_ROUTE_INFO - if (ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, NULL, 0)) + if (!in6_dev->cnf.accept_ra_from_local && + ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, + NULL, 0)) { + ND_PRINTK(2, info, + "RA from local address detected on dev: %s: router info ignored.\n", + skb->dev->name); goto skip_routeinfo; + } if (in6_dev->cnf.accept_ra_rtr_pref && ndopts.nd_opts_ri) { struct nd_opt_hdr *p; @@ -1293,8 +1329,12 @@ skip_routeinfo: #ifdef CONFIG_IPV6_NDISC_NODETYPE /* skip link-specific ndopts from interior routers */ - if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) + if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT) { + ND_PRINTK(2, info, + "RA: %s, nodetype is NODEFAULT (interior routes), dev: %s\n", + __func__, skb->dev->name); goto out; + } #endif if (in6_dev->cnf.accept_ra_pinfo && ndopts.nd_opts_pi) { @@ -1728,7 +1768,7 @@ int __init ndisc_init(void) #ifdef CONFIG_SYSCTL err = neigh_sysctl_register(NULL, &nd_tbl.parms, - &ndisc_ifinfo_sysctl_change); + ndisc_ifinfo_sysctl_change); if (err) goto out_unregister_pernet; out: diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index 4bff1f297e39..ac93df16f5af 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -55,6 +55,11 @@ config NFT_REJECT_IPV6 default NFT_REJECT tristate +config NF_LOG_IPV6 + tristate "IPv6 packet logging" + depends on NETFILTER_ADVANCED + select NF_LOG_COMMON + config IP6_NF_IPTABLES tristate "IP6 tables support (required for filtering)" depends on INET && IPV6 diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile index 70d3dd66f2cd..c0b263104ed2 100644 --- a/net/ipv6/netfilter/Makefile +++ b/net/ipv6/netfilter/Makefile @@ -23,6 +23,9 @@ obj-$(CONFIG_NF_NAT_IPV6) += nf_nat_ipv6.o nf_defrag_ipv6-y := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o obj-$(CONFIG_NF_DEFRAG_IPV6) += nf_defrag_ipv6.o +# logging +obj-$(CONFIG_NF_LOG_IPV6) += nf_log_ipv6.o + # nf_tables obj-$(CONFIG_NF_TABLES_IPV6) += nf_tables_ipv6.o obj-$(CONFIG_NFT_CHAIN_ROUTE_IPV6) += nft_chain_route_ipv6.o diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c index 54bd9790603f..8b147440fbdc 100644 --- a/net/ipv6/netfilter/ip6t_ipv6header.c +++ b/net/ipv6/netfilter/ip6t_ipv6header.c @@ -94,7 +94,6 @@ ipv6header_mt6(const struct sk_buff *skb, struct xt_action_param *par) break; default: return false; - break; } nexthdr = hp->nexthdr; diff --git a/net/ipv6/netfilter/ip6table_nat.c b/net/ipv6/netfilter/ip6table_nat.c index 84c7f33d0cf8..387d8b8fc18d 100644 --- a/net/ipv6/netfilter/ip6table_nat.c +++ b/net/ipv6/netfilter/ip6table_nat.c @@ -90,17 +90,9 @@ nf_nat_ipv6_fn(const struct nf_hook_ops *ops, if (nf_ct_is_untracked(ct)) return NF_ACCEPT; - nat = nfct_nat(ct); - if (!nat) { - /* NAT module was loaded late. */ - if (nf_ct_is_confirmed(ct)) - return NF_ACCEPT; - nat = nf_ct_ext_add(ct, NF_CT_EXT_NAT, GFP_ATOMIC); - if (nat == NULL) { - pr_debug("failed to add NAT extension\n"); - return NF_ACCEPT; - } - } + nat = nf_ct_nat_ext_add(ct); + if (nat == NULL) + return NF_ACCEPT; switch (ctinfo) { case IP_CT_RELATED: diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index 767ab8da8218..6f187c8d8a1b 100644 --- a/net/ipv6/netfilter/nf_conntrack_reasm.c +++ b/net/ipv6/netfilter/nf_conntrack_reasm.c @@ -50,6 +50,7 @@ #include <linux/module.h> #include <net/netfilter/ipv6/nf_defrag_ipv6.h> +static const char nf_frags_cache_name[] = "nf-frags"; struct nf_ct_frag6_skb_cb { @@ -63,6 +64,8 @@ struct nf_ct_frag6_skb_cb static struct inet_frags nf_frags; #ifdef CONFIG_SYSCTL +static int zero; + static struct ctl_table nf_ct_frag6_sysctl_table[] = { { .procname = "nf_conntrack_frag6_timeout", @@ -76,14 +79,17 @@ static struct ctl_table nf_ct_frag6_sysctl_table[] = { .data = &init_net.nf_frag.frags.low_thresh, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &init_net.nf_frag.frags.high_thresh }, { .procname = "nf_conntrack_frag6_high_thresh", .data = &init_net.nf_frag.frags.high_thresh, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, + .extra1 = &init_net.nf_frag.frags.low_thresh }, { } }; @@ -102,7 +108,10 @@ static int nf_ct_frag6_sysctl_register(struct net *net) table[0].data = &net->nf_frag.frags.timeout; table[1].data = &net->nf_frag.frags.low_thresh; + table[1].extra2 = &net->nf_frag.frags.high_thresh; table[2].data = &net->nf_frag.frags.high_thresh; + table[2].extra1 = &net->nf_frag.frags.low_thresh; + table[2].extra2 = &init_net.nf_frag.frags.high_thresh; } hdr = register_net_sysctl(net, "net/netfilter", table); @@ -147,16 +156,13 @@ static inline u8 ip6_frag_ecn(const struct ipv6hdr *ipv6h) static unsigned int nf_hash_frag(__be32 id, const struct in6_addr *saddr, const struct in6_addr *daddr) { - u32 c; - net_get_random_once(&nf_frags.rnd, sizeof(nf_frags.rnd)); - c = jhash_3words(ipv6_addr_hash(saddr), ipv6_addr_hash(daddr), - (__force u32)id, nf_frags.rnd); - return c & (INETFRAGS_HASHSZ - 1); + return jhash_3words(ipv6_addr_hash(saddr), ipv6_addr_hash(daddr), + (__force u32)id, nf_frags.rnd); } -static unsigned int nf_hashfn(struct inet_frag_queue *q) +static unsigned int nf_hashfn(const struct inet_frag_queue *q) { const struct frag_queue *nq; @@ -196,7 +202,7 @@ static inline struct frag_queue *fq_find(struct net *net, __be32 id, arg.dst = dst; arg.ecn = ecn; - read_lock_bh(&nf_frags.lock); + local_bh_disable(); hash = nf_hash_frag(id, src, dst); q = inet_frag_find(&net->nf_frag.frags, &nf_frags, &arg, hash); @@ -217,7 +223,7 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb, int offset, end; u8 ecn; - if (fq->q.last_in & INET_FRAG_COMPLETE) { + if (fq->q.flags & INET_FRAG_COMPLETE) { pr_debug("Already completed\n"); goto err; } @@ -248,11 +254,11 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb, * or have different end, the segment is corrupted. */ if (end < fq->q.len || - ((fq->q.last_in & INET_FRAG_LAST_IN) && end != fq->q.len)) { + ((fq->q.flags & INET_FRAG_LAST_IN) && end != fq->q.len)) { pr_debug("already received last fragment\n"); goto err; } - fq->q.last_in |= INET_FRAG_LAST_IN; + fq->q.flags |= INET_FRAG_LAST_IN; fq->q.len = end; } else { /* Check if the fragment is rounded to 8 bytes. @@ -267,7 +273,7 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb, } if (end > fq->q.len) { /* Some bits beyond end -> corruption. */ - if (fq->q.last_in & INET_FRAG_LAST_IN) { + if (fq->q.flags & INET_FRAG_LAST_IN) { pr_debug("last packet already reached.\n"); goto err; } @@ -349,10 +355,9 @@ found: */ if (offset == 0) { fq->nhoffset = nhoff; - fq->q.last_in |= INET_FRAG_FIRST_IN; + fq->q.flags |= INET_FRAG_FIRST_IN; } - inet_frag_lru_move(&fq->q); return 0; discard_fq: @@ -451,7 +456,7 @@ nf_ct_frag6_reasm(struct frag_queue *fq, struct net_device *dev) } sub_frag_mem_limit(&fq->q, head->truesize); - head->local_df = 1; + head->ignore_df = 1; head->next = NULL; head->dev = dev; head->tstamp = fq->q.stamp; @@ -597,10 +602,6 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user) hdr = ipv6_hdr(clone); fhdr = (struct frag_hdr *)skb_transport_header(clone); - local_bh_disable(); - inet_frag_evictor(&net->nf_frag.frags, &nf_frags, false); - local_bh_enable(); - fq = fq_find(net, fhdr->identification, user, &hdr->saddr, &hdr->daddr, ip6_frag_ecn(hdr)); if (fq == NULL) { @@ -617,7 +618,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user) goto ret_orig; } - if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && + if (fq->q.flags == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && fq->q.meat == fq->q.len) { ret_skb = nf_ct_frag6_reasm(fq, dev); if (ret_skb == NULL) @@ -677,13 +678,15 @@ int nf_ct_frag6_init(void) nf_frags.qsize = sizeof(struct frag_queue); nf_frags.match = ip6_frag_match; nf_frags.frag_expire = nf_ct_frag6_expire; - nf_frags.secret_interval = 10 * 60 * HZ; - inet_frags_init(&nf_frags); - + nf_frags.frags_cache_name = nf_frags_cache_name; + ret = inet_frags_init(&nf_frags); + if (ret) + goto out; ret = register_pernet_subsys(&nf_ct_net_ops); if (ret) inet_frags_fini(&nf_frags); +out: return ret; } diff --git a/net/ipv6/netfilter/nf_log_ipv6.c b/net/ipv6/netfilter/nf_log_ipv6.c new file mode 100644 index 000000000000..7b17a0be93e7 --- /dev/null +++ b/net/ipv6/netfilter/nf_log_ipv6.c @@ -0,0 +1,417 @@ +/* (C) 1999-2001 Paul `Rusty' Russell + * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/skbuff.h> +#include <linux/if_arp.h> +#include <linux/ip.h> +#include <net/ipv6.h> +#include <net/icmp.h> +#include <net/udp.h> +#include <net/tcp.h> +#include <net/route.h> + +#include <linux/netfilter.h> +#include <linux/netfilter_ipv6/ip6_tables.h> +#include <linux/netfilter/xt_LOG.h> +#include <net/netfilter/nf_log.h> + +static struct nf_loginfo default_loginfo = { + .type = NF_LOG_TYPE_LOG, + .u = { + .log = { + .level = 5, + .logflags = NF_LOG_MASK, + }, + }, +}; + +/* One level of recursion won't kill us */ +static void dump_ipv6_packet(struct nf_log_buf *m, + const struct nf_loginfo *info, + const struct sk_buff *skb, unsigned int ip6hoff, + int recurse) +{ + u_int8_t currenthdr; + int fragment; + struct ipv6hdr _ip6h; + const struct ipv6hdr *ih; + unsigned int ptr; + unsigned int hdrlen = 0; + unsigned int logflags; + + if (info->type == NF_LOG_TYPE_LOG) + logflags = info->u.log.logflags; + else + logflags = NF_LOG_MASK; + + ih = skb_header_pointer(skb, ip6hoff, sizeof(_ip6h), &_ip6h); + if (ih == NULL) { + nf_log_buf_add(m, "TRUNCATED"); + return; + } + + /* Max length: 88 "SRC=0000.0000.0000.0000.0000.0000.0000.0000 DST=0000.0000.0000.0000.0000.0000.0000.0000 " */ + nf_log_buf_add(m, "SRC=%pI6 DST=%pI6 ", &ih->saddr, &ih->daddr); + + /* Max length: 44 "LEN=65535 TC=255 HOPLIMIT=255 FLOWLBL=FFFFF " */ + nf_log_buf_add(m, "LEN=%Zu TC=%u HOPLIMIT=%u FLOWLBL=%u ", + ntohs(ih->payload_len) + sizeof(struct ipv6hdr), + (ntohl(*(__be32 *)ih) & 0x0ff00000) >> 20, + ih->hop_limit, + (ntohl(*(__be32 *)ih) & 0x000fffff)); + + fragment = 0; + ptr = ip6hoff + sizeof(struct ipv6hdr); + currenthdr = ih->nexthdr; + while (currenthdr != NEXTHDR_NONE && ip6t_ext_hdr(currenthdr)) { + struct ipv6_opt_hdr _hdr; + const struct ipv6_opt_hdr *hp; + + hp = skb_header_pointer(skb, ptr, sizeof(_hdr), &_hdr); + if (hp == NULL) { + nf_log_buf_add(m, "TRUNCATED"); + return; + } + + /* Max length: 48 "OPT (...) " */ + if (logflags & XT_LOG_IPOPT) + nf_log_buf_add(m, "OPT ( "); + + switch (currenthdr) { + case IPPROTO_FRAGMENT: { + struct frag_hdr _fhdr; + const struct frag_hdr *fh; + + nf_log_buf_add(m, "FRAG:"); + fh = skb_header_pointer(skb, ptr, sizeof(_fhdr), + &_fhdr); + if (fh == NULL) { + nf_log_buf_add(m, "TRUNCATED "); + return; + } + + /* Max length: 6 "65535 " */ + nf_log_buf_add(m, "%u ", ntohs(fh->frag_off) & 0xFFF8); + + /* Max length: 11 "INCOMPLETE " */ + if (fh->frag_off & htons(0x0001)) + nf_log_buf_add(m, "INCOMPLETE "); + + nf_log_buf_add(m, "ID:%08x ", + ntohl(fh->identification)); + + if (ntohs(fh->frag_off) & 0xFFF8) + fragment = 1; + + hdrlen = 8; + + break; + } + case IPPROTO_DSTOPTS: + case IPPROTO_ROUTING: + case IPPROTO_HOPOPTS: + if (fragment) { + if (logflags & XT_LOG_IPOPT) + nf_log_buf_add(m, ")"); + return; + } + hdrlen = ipv6_optlen(hp); + break; + /* Max Length */ + case IPPROTO_AH: + if (logflags & XT_LOG_IPOPT) { + struct ip_auth_hdr _ahdr; + const struct ip_auth_hdr *ah; + + /* Max length: 3 "AH " */ + nf_log_buf_add(m, "AH "); + + if (fragment) { + nf_log_buf_add(m, ")"); + return; + } + + ah = skb_header_pointer(skb, ptr, sizeof(_ahdr), + &_ahdr); + if (ah == NULL) { + /* + * Max length: 26 "INCOMPLETE [65535 + * bytes] )" + */ + nf_log_buf_add(m, "INCOMPLETE [%u bytes] )", + skb->len - ptr); + return; + } + + /* Length: 15 "SPI=0xF1234567 */ + nf_log_buf_add(m, "SPI=0x%x ", ntohl(ah->spi)); + + } + + hdrlen = (hp->hdrlen+2)<<2; + break; + case IPPROTO_ESP: + if (logflags & XT_LOG_IPOPT) { + struct ip_esp_hdr _esph; + const struct ip_esp_hdr *eh; + + /* Max length: 4 "ESP " */ + nf_log_buf_add(m, "ESP "); + + if (fragment) { + nf_log_buf_add(m, ")"); + return; + } + + /* + * Max length: 26 "INCOMPLETE [65535 bytes] )" + */ + eh = skb_header_pointer(skb, ptr, sizeof(_esph), + &_esph); + if (eh == NULL) { + nf_log_buf_add(m, "INCOMPLETE [%u bytes] )", + skb->len - ptr); + return; + } + + /* Length: 16 "SPI=0xF1234567 )" */ + nf_log_buf_add(m, "SPI=0x%x )", + ntohl(eh->spi)); + } + return; + default: + /* Max length: 20 "Unknown Ext Hdr 255" */ + nf_log_buf_add(m, "Unknown Ext Hdr %u", currenthdr); + return; + } + if (logflags & XT_LOG_IPOPT) + nf_log_buf_add(m, ") "); + + currenthdr = hp->nexthdr; + ptr += hdrlen; + } + + switch (currenthdr) { + case IPPROTO_TCP: + if (nf_log_dump_tcp_header(m, skb, currenthdr, fragment, + ptr, logflags)) + return; + break; + case IPPROTO_UDP: + case IPPROTO_UDPLITE: + if (nf_log_dump_udp_header(m, skb, currenthdr, fragment, ptr)) + return; + break; + case IPPROTO_ICMPV6: { + struct icmp6hdr _icmp6h; + const struct icmp6hdr *ic; + + /* Max length: 13 "PROTO=ICMPv6 " */ + nf_log_buf_add(m, "PROTO=ICMPv6 "); + + if (fragment) + break; + + /* Max length: 25 "INCOMPLETE [65535 bytes] " */ + ic = skb_header_pointer(skb, ptr, sizeof(_icmp6h), &_icmp6h); + if (ic == NULL) { + nf_log_buf_add(m, "INCOMPLETE [%u bytes] ", + skb->len - ptr); + return; + } + + /* Max length: 18 "TYPE=255 CODE=255 " */ + nf_log_buf_add(m, "TYPE=%u CODE=%u ", + ic->icmp6_type, ic->icmp6_code); + + switch (ic->icmp6_type) { + case ICMPV6_ECHO_REQUEST: + case ICMPV6_ECHO_REPLY: + /* Max length: 19 "ID=65535 SEQ=65535 " */ + nf_log_buf_add(m, "ID=%u SEQ=%u ", + ntohs(ic->icmp6_identifier), + ntohs(ic->icmp6_sequence)); + break; + case ICMPV6_MGM_QUERY: + case ICMPV6_MGM_REPORT: + case ICMPV6_MGM_REDUCTION: + break; + + case ICMPV6_PARAMPROB: + /* Max length: 17 "POINTER=ffffffff " */ + nf_log_buf_add(m, "POINTER=%08x ", + ntohl(ic->icmp6_pointer)); + /* Fall through */ + case ICMPV6_DEST_UNREACH: + case ICMPV6_PKT_TOOBIG: + case ICMPV6_TIME_EXCEED: + /* Max length: 3+maxlen */ + if (recurse) { + nf_log_buf_add(m, "["); + dump_ipv6_packet(m, info, skb, + ptr + sizeof(_icmp6h), 0); + nf_log_buf_add(m, "] "); + } + + /* Max length: 10 "MTU=65535 " */ + if (ic->icmp6_type == ICMPV6_PKT_TOOBIG) { + nf_log_buf_add(m, "MTU=%u ", + ntohl(ic->icmp6_mtu)); + } + } + break; + } + /* Max length: 10 "PROTO=255 " */ + default: + nf_log_buf_add(m, "PROTO=%u ", currenthdr); + } + + /* Max length: 15 "UID=4294967295 " */ + if ((logflags & XT_LOG_UID) && recurse) + nf_log_dump_sk_uid_gid(m, skb->sk); + + /* Max length: 16 "MARK=0xFFFFFFFF " */ + if (recurse && skb->mark) + nf_log_buf_add(m, "MARK=0x%x ", skb->mark); +} + +static void dump_ipv6_mac_header(struct nf_log_buf *m, + const struct nf_loginfo *info, + const struct sk_buff *skb) +{ + struct net_device *dev = skb->dev; + unsigned int logflags = 0; + + if (info->type == NF_LOG_TYPE_LOG) + logflags = info->u.log.logflags; + + if (!(logflags & XT_LOG_MACDECODE)) + goto fallback; + + switch (dev->type) { + case ARPHRD_ETHER: + nf_log_buf_add(m, "MACSRC=%pM MACDST=%pM MACPROTO=%04x ", + eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest, + ntohs(eth_hdr(skb)->h_proto)); + return; + default: + break; + } + +fallback: + nf_log_buf_add(m, "MAC="); + if (dev->hard_header_len && + skb->mac_header != skb->network_header) { + const unsigned char *p = skb_mac_header(skb); + unsigned int len = dev->hard_header_len; + unsigned int i; + + if (dev->type == ARPHRD_SIT) { + p -= ETH_HLEN; + + if (p < skb->head) + p = NULL; + } + + if (p != NULL) { + nf_log_buf_add(m, "%02x", *p++); + for (i = 1; i < len; i++) + nf_log_buf_add(m, ":%02x", *p++); + } + nf_log_buf_add(m, " "); + + if (dev->type == ARPHRD_SIT) { + const struct iphdr *iph = + (struct iphdr *)skb_mac_header(skb); + nf_log_buf_add(m, "TUNNEL=%pI4->%pI4 ", &iph->saddr, + &iph->daddr); + } + } else { + nf_log_buf_add(m, " "); + } +} + +static void nf_log_ip6_packet(struct net *net, u_int8_t pf, + unsigned int hooknum, const struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + const struct nf_loginfo *loginfo, + const char *prefix) +{ + struct nf_log_buf *m; + + /* FIXME: Disabled from containers until syslog ns is supported */ + if (!net_eq(net, &init_net)) + return; + + m = nf_log_buf_open(); + + if (!loginfo) + loginfo = &default_loginfo; + + nf_log_dump_packet_common(m, pf, hooknum, skb, in, out, + loginfo, prefix); + + if (in != NULL) + dump_ipv6_mac_header(m, loginfo, skb); + + dump_ipv6_packet(m, loginfo, skb, skb_network_offset(skb), 1); + + nf_log_buf_close(m); +} + +static struct nf_logger nf_ip6_logger __read_mostly = { + .name = "nf_log_ipv6", + .type = NF_LOG_TYPE_LOG, + .logfn = nf_log_ip6_packet, + .me = THIS_MODULE, +}; + +static int __net_init nf_log_ipv6_net_init(struct net *net) +{ + nf_log_set(net, NFPROTO_IPV6, &nf_ip6_logger); + return 0; +} + +static void __net_exit nf_log_ipv6_net_exit(struct net *net) +{ + nf_log_unset(net, &nf_ip6_logger); +} + +static struct pernet_operations nf_log_ipv6_net_ops = { + .init = nf_log_ipv6_net_init, + .exit = nf_log_ipv6_net_exit, +}; + +static int __init nf_log_ipv6_init(void) +{ + int ret; + + ret = register_pernet_subsys(&nf_log_ipv6_net_ops); + if (ret < 0) + return ret; + + nf_log_register(NFPROTO_IPV6, &nf_ip6_logger); + return 0; +} + +static void __exit nf_log_ipv6_exit(void) +{ + unregister_pernet_subsys(&nf_log_ipv6_net_ops); + nf_log_unregister(&nf_ip6_logger); +} + +module_init(nf_log_ipv6_init); +module_exit(nf_log_ipv6_exit); + +MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); +MODULE_DESCRIPTION("Netfilter IPv4 packet logging"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_NF_LOGGER(AF_INET6, 0); diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c index abfe75a2e316..fc8e49b2ff3e 100644 --- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c @@ -158,6 +158,7 @@ static void nf_nat_ipv6_csum_recalc(struct sk_buff *skb, htons(oldlen), htons(datalen), 1); } +#if IS_ENABLED(CONFIG_NF_CT_NETLINK) static int nf_nat_ipv6_nlattr_to_range(struct nlattr *tb[], struct nf_nat_range *range) { @@ -175,6 +176,7 @@ static int nf_nat_ipv6_nlattr_to_range(struct nlattr *tb[], return 0; } +#endif static const struct nf_nat_l3proto nf_nat_l3proto_ipv6 = { .l3proto = NFPROTO_IPV6, @@ -183,7 +185,9 @@ static const struct nf_nat_l3proto nf_nat_l3proto_ipv6 = { .manip_pkt = nf_nat_ipv6_manip_pkt, .csum_update = nf_nat_ipv6_csum_update, .csum_recalc = nf_nat_ipv6_csum_recalc, +#if IS_ENABLED(CONFIG_NF_CT_NETLINK) .nlattr_to_range = nf_nat_ipv6_nlattr_to_range, +#endif #ifdef CONFIG_XFRM .decode_session = nf_nat_ipv6_decode_session, #endif diff --git a/net/ipv6/netfilter/nft_chain_nat_ipv6.c b/net/ipv6/netfilter/nft_chain_nat_ipv6.c index 9c3297a768fd..d189fcb437fe 100644 --- a/net/ipv6/netfilter/nft_chain_nat_ipv6.c +++ b/net/ipv6/netfilter/nft_chain_nat_ipv6.c @@ -47,15 +47,9 @@ static unsigned int nf_nat_ipv6_fn(const struct nf_hook_ops *ops, if (ct == NULL || nf_ct_is_untracked(ct)) return NF_ACCEPT; - nat = nfct_nat(ct); - if (nat == NULL) { - /* Conntrack module was loaded late, can't add extension. */ - if (nf_ct_is_confirmed(ct)) - return NF_ACCEPT; - nat = nf_ct_ext_add(ct, NF_CT_EXT_NAT, GFP_ATOMIC); - if (nat == NULL) - return NF_ACCEPT; - } + nat = nf_ct_nat_ext_add(ct); + if (nat == NULL) + return NF_ACCEPT; switch (ctinfo) { case IP_CT_RELATED: diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c index 56596ce390a1..5ec867e4a8b7 100644 --- a/net/ipv6/output_core.c +++ b/net/ipv6/output_core.c @@ -8,32 +8,6 @@ #include <net/addrconf.h> #include <net/secure_seq.h> -void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt) -{ - static atomic_t ipv6_fragmentation_id; - struct in6_addr addr; - int ident; - -#if IS_ENABLED(CONFIG_IPV6) - struct inet_peer *peer; - struct net *net; - - net = dev_net(rt->dst.dev); - peer = inet_getpeer_v6(net->ipv6.peers, &rt->rt6i_dst.addr, 1); - if (peer) { - fhdr->identification = htonl(inet_getid(peer, 0)); - inet_putpeer(peer); - return; - } -#endif - ident = atomic_inc_return(&ipv6_fragmentation_id); - - addr = rt->rt6i_dst.addr; - addr.s6_addr32[0] ^= (__force __be32)ident; - fhdr->identification = htonl(secure_ipv6_id(addr.s6_addr32)); -} -EXPORT_SYMBOL(ipv6_select_ident); - int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr) { u16 offset = sizeof(struct ipv6hdr); @@ -104,6 +78,7 @@ int __ip6_local_out(struct sk_buff *skb) if (len > IPV6_MAXPLEN) len = 0; ipv6_hdr(skb)->payload_len = htons(len); + IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr); return nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, skb_dst(skb)->dev, dst_output); diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index bda74291c3e0..5b7a1ed2aba9 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -51,7 +51,6 @@ static struct inet_protosw pingv6_protosw = { .protocol = IPPROTO_ICMPV6, .prot = &pingv6_prot, .ops = &inet6_dgram_ops, - .no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_REUSE, }; @@ -168,12 +167,7 @@ int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, pfh.wcheck = 0; pfh.family = AF_INET6; - if (ipv6_addr_is_multicast(&fl6.daddr)) - hlimit = np->mcast_hops; - else - hlimit = np->hop_limit; - if (hlimit < 0) - hlimit = ip6_dst_hoplimit(dst); + hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); lock_sock(sk); err = ip6_append_data(sk, ping_getfrag, &pfh, len, diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index 091d066a57b3..2d6f860e5c1e 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -33,6 +33,7 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v) { struct net *net = seq->private; + unsigned int frag_mem = ip6_frag_mem(net); seq_printf(seq, "TCP6: inuse %d\n", sock_prot_inuse_get(net, &tcpv6_prot)); @@ -42,8 +43,7 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v) sock_prot_inuse_get(net, &udplitev6_prot)); seq_printf(seq, "RAW6: inuse %d\n", sock_prot_inuse_get(net, &rawv6_prot)); - seq_printf(seq, "FRAG6: inuse %d memory %d\n", - ip6_frag_nqueues(net), ip6_frag_mem(net)); + seq_printf(seq, "FRAG6: inuse %u memory %u\n", !!frag_mem, frag_mem); return 0; } @@ -186,7 +186,7 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib) /* can be called either with percpu mib (pcpumib != NULL), * or shared one (smib != NULL) */ -static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib, +static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib, atomic_long_t *smib, const struct snmp_mib *itemlist) { @@ -201,7 +201,7 @@ static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib, } } -static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib, +static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib, const struct snmp_mib *itemlist, size_t syncpoff) { int i; @@ -215,14 +215,14 @@ static int snmp6_seq_show(struct seq_file *seq, void *v) { struct net *net = (struct net *)seq->private; - snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics, + snmp6_seq_show_item64(seq, net->mib.ipv6_statistics, snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); - snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics, + snmp6_seq_show_item(seq, net->mib.icmpv6_statistics, NULL, snmp6_icmp6_list); snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs); - snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6, + snmp6_seq_show_item(seq, net->mib.udp_stats_in6, NULL, snmp6_udp6_list); - snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6, + snmp6_seq_show_item(seq, net->mib.udplite_stats_in6, NULL, snmp6_udplite6_list); return 0; } @@ -245,7 +245,7 @@ static int snmp6_dev_seq_show(struct seq_file *seq, void *v) struct inet6_dev *idev = (struct inet6_dev *)seq->private; seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); - snmp6_seq_show_item64(seq, (void __percpu **)idev->stats.ipv6, + snmp6_seq_show_item64(seq, idev->stats.ipv6, snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs, snmp6_icmp6_list); diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 1f29996e368a..39d44226e402 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -176,7 +176,7 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) goto out; net = dev_net(skb->dev); - sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); + sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, inet6_iif(skb)); while (sk) { int filtered; @@ -220,7 +220,7 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) } } sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr, - IP6CB(skb)->iif); + inet6_iif(skb)); } out: read_unlock(&raw_v6_hashinfo.lock); @@ -375,7 +375,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr, net = dev_net(skb->dev); while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr, - IP6CB(skb)->iif))) { + inet6_iif(skb)))) { rawv6_err(sk, skb, NULL, type, code, inner_offset, info); sk = sk_next(sk); @@ -506,7 +506,7 @@ static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk, sin6->sin6_addr = ipv6_hdr(skb)->saddr; sin6->sin6_flowinfo = 0; sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr, - IP6CB(skb)->iif); + inet6_iif(skb)); *addr_len = sizeof(*sin6); } @@ -588,8 +588,7 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6, } offset += skb_transport_offset(skb); - if (skb_copy_bits(skb, offset, &csum, 2)) - BUG(); + BUG_ON(skb_copy_bits(skb, offset, &csum, 2)); /* in case cksum was not initialized */ if (unlikely(csum)) @@ -601,8 +600,7 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6, if (csum == 0 && fl6->flowi6_proto == IPPROTO_UDP) csum = CSUM_MANGLED_0; - if (skb_store_bits(skb, offset, &csum, 2)) - BUG(); + BUG_ON(skb_store_bits(skb, offset, &csum, 2)); send: err = ip6_push_pending_frames(sk); @@ -873,14 +871,8 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, err = PTR_ERR(dst); goto out; } - if (hlimit < 0) { - if (ipv6_addr_is_multicast(&fl6.daddr)) - hlimit = np->mcast_hops; - else - hlimit = np->hop_limit; - if (hlimit < 0) - hlimit = ip6_dst_hoplimit(dst); - } + if (hlimit < 0) + hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); if (tclass < 0) tclass = np->tclass; @@ -1328,7 +1320,6 @@ static struct inet_protosw rawv6_protosw = { .protocol = IPPROTO_IP, /* wild card */ .prot = &rawv6_prot, .ops = &inet6_sockraw_ops, - .no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_REUSE, }; diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index cc85a9ba5010..c6557d9f7808 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -60,6 +60,8 @@ #include <net/inet_frag.h> #include <net/inet_ecn.h> +static const char ip6_frag_cache_name[] = "ip6-frags"; + struct ip6frag_skb_cb { struct inet6_skb_parm h; @@ -85,27 +87,23 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, static unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr, const struct in6_addr *daddr) { - u32 c; - net_get_random_once(&ip6_frags.rnd, sizeof(ip6_frags.rnd)); - c = jhash_3words(ipv6_addr_hash(saddr), ipv6_addr_hash(daddr), - (__force u32)id, ip6_frags.rnd); - - return c & (INETFRAGS_HASHSZ - 1); + return jhash_3words(ipv6_addr_hash(saddr), ipv6_addr_hash(daddr), + (__force u32)id, ip6_frags.rnd); } -static unsigned int ip6_hashfn(struct inet_frag_queue *q) +static unsigned int ip6_hashfn(const struct inet_frag_queue *q) { - struct frag_queue *fq; + const struct frag_queue *fq; fq = container_of(q, struct frag_queue, q); return inet6_hash_frag(fq->id, &fq->saddr, &fq->daddr); } -bool ip6_frag_match(struct inet_frag_queue *q, void *a) +bool ip6_frag_match(const struct inet_frag_queue *q, const void *a) { - struct frag_queue *fq; - struct ip6_create_arg *arg = a; + const struct frag_queue *fq; + const struct ip6_create_arg *arg = a; fq = container_of(q, struct frag_queue, q); return fq->id == arg->id && @@ -115,10 +113,10 @@ bool ip6_frag_match(struct inet_frag_queue *q, void *a) } EXPORT_SYMBOL(ip6_frag_match); -void ip6_frag_init(struct inet_frag_queue *q, void *a) +void ip6_frag_init(struct inet_frag_queue *q, const void *a) { struct frag_queue *fq = container_of(q, struct frag_queue, q); - struct ip6_create_arg *arg = a; + const struct ip6_create_arg *arg = a; fq->id = arg->id; fq->user = arg->user; @@ -135,7 +133,7 @@ void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq, spin_lock(&fq->q.lock); - if (fq->q.last_in & INET_FRAG_COMPLETE) + if (fq->q.flags & INET_FRAG_COMPLETE) goto out; inet_frag_kill(&fq->q, frags); @@ -145,17 +143,20 @@ void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq, if (!dev) goto out_rcu_unlock; - IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMTIMEOUT); IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS); + if (fq->q.flags & INET_FRAG_EVICTED) + goto out_rcu_unlock; + + IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMTIMEOUT); + /* Don't send error if the first segment did not arrive. */ - if (!(fq->q.last_in & INET_FRAG_FIRST_IN) || !fq->q.fragments) + if (!(fq->q.flags & INET_FRAG_FIRST_IN) || !fq->q.fragments) goto out_rcu_unlock; - /* - But use as source device on which LAST ARRIVED - segment was received. And do not use fq->dev - pointer directly, device might already disappeared. + /* But use as source device on which LAST ARRIVED + * segment was received. And do not use fq->dev + * pointer directly, device might already disappeared. */ fq->q.fragments->dev = dev; icmpv6_send(fq->q.fragments, ICMPV6_TIME_EXCEED, ICMPV6_EXC_FRAGTIME, 0); @@ -192,7 +193,6 @@ fq_find(struct net *net, __be32 id, const struct in6_addr *src, arg.dst = dst; arg.ecn = ecn; - read_lock(&ip6_frags.lock); hash = inet6_hash_frag(id, src, dst); q = inet_frag_find(&net->ipv6.frags, &ip6_frags, &arg, hash); @@ -212,7 +212,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb, struct net *net = dev_net(skb_dst(skb)->dev); u8 ecn; - if (fq->q.last_in & INET_FRAG_COMPLETE) + if (fq->q.flags & INET_FRAG_COMPLETE) goto err; offset = ntohs(fhdr->frag_off) & ~0x7; @@ -243,9 +243,9 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb, * or have different end, the segment is corrupted. */ if (end < fq->q.len || - ((fq->q.last_in & INET_FRAG_LAST_IN) && end != fq->q.len)) + ((fq->q.flags & INET_FRAG_LAST_IN) && end != fq->q.len)) goto err; - fq->q.last_in |= INET_FRAG_LAST_IN; + fq->q.flags |= INET_FRAG_LAST_IN; fq->q.len = end; } else { /* Check if the fragment is rounded to 8 bytes. @@ -263,7 +263,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb, } if (end > fq->q.len) { /* Some bits beyond end -> corruption. */ - if (fq->q.last_in & INET_FRAG_LAST_IN) + if (fq->q.flags & INET_FRAG_LAST_IN) goto err; fq->q.len = end; } @@ -338,10 +338,10 @@ found: */ if (offset == 0) { fq->nhoffset = nhoff; - fq->q.last_in |= INET_FRAG_FIRST_IN; + fq->q.flags |= INET_FRAG_FIRST_IN; } - if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && + if (fq->q.flags == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && fq->q.meat == fq->q.len) { int res; unsigned long orefdst = skb->_skb_refdst; @@ -353,14 +353,13 @@ found: } skb_dst_drop(skb); - inet_frag_lru_move(&fq->q); return -1; discard_fq: inet_frag_kill(&fq->q, &ip6_frags); err: - IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), - IPSTATS_MIB_REASMFAILS); + IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), + IPSTATS_MIB_REASMFAILS); kfree_skb(skb); return -1; } @@ -523,7 +522,6 @@ static int ipv6_frag_rcv(struct sk_buff *skb) struct frag_queue *fq; const struct ipv6hdr *hdr = ipv6_hdr(skb); struct net *net = dev_net(skb_dst(skb)->dev); - int evicted; if (IP6CB(skb)->flags & IP6SKB_FRAGMENTED) goto fail_hdr; @@ -552,11 +550,6 @@ static int ipv6_frag_rcv(struct sk_buff *skb) return 1; } - evicted = inet_frag_evictor(&net->ipv6.frags, &ip6_frags, false); - if (evicted) - IP6_ADD_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), - IPSTATS_MIB_REASMFAILS, evicted); - fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr, ip6_frag_ecn(hdr)); if (fq != NULL) { @@ -576,7 +569,8 @@ static int ipv6_frag_rcv(struct sk_buff *skb) return -1; fail_hdr: - IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS); + IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), + IPSTATS_MIB_INHDRERRORS); icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, skb_network_header_len(skb)); return -1; } @@ -588,20 +582,25 @@ static const struct inet6_protocol frag_protocol = }; #ifdef CONFIG_SYSCTL +static int zero; + static struct ctl_table ip6_frags_ns_ctl_table[] = { { .procname = "ip6frag_high_thresh", .data = &init_net.ipv6.frags.high_thresh, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec + .proc_handler = proc_dointvec_minmax, + .extra1 = &init_net.ipv6.frags.low_thresh }, { .procname = "ip6frag_low_thresh", .data = &init_net.ipv6.frags.low_thresh, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &init_net.ipv6.frags.high_thresh }, { .procname = "ip6frag_time", @@ -613,10 +612,12 @@ static struct ctl_table ip6_frags_ns_ctl_table[] = { { } }; +/* secret interval has been deprecated */ +static int ip6_frags_secret_interval_unused; static struct ctl_table ip6_frags_ctl_table[] = { { .procname = "ip6frag_secret_interval", - .data = &ip6_frags.secret_interval, + .data = &ip6_frags_secret_interval_unused, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, @@ -636,7 +637,10 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net) goto err_alloc; table[0].data = &net->ipv6.frags.high_thresh; + table[0].extra1 = &net->ipv6.frags.low_thresh; + table[0].extra2 = &init_net.ipv6.frags.high_thresh; table[1].data = &net->ipv6.frags.low_thresh; + table[1].extra2 = &net->ipv6.frags.high_thresh; table[2].data = &net->ipv6.frags.timeout; /* Don't export sysctls to unprivileged users */ @@ -746,8 +750,10 @@ int __init ipv6_frag_init(void) ip6_frags.qsize = sizeof(struct frag_queue); ip6_frags.match = ip6_frag_match; ip6_frags.frag_expire = ip6_frag_expire; - ip6_frags.secret_interval = 10 * 60 * HZ; - inet_frags_init(&ip6_frags); + ip6_frags.frags_cache_name = ip6_frag_cache_name; + ret = inet_frags_init(&ip6_frags); + if (ret) + goto err_pernet; out: return ret; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 6ebdb7b6744c..f23fbd28a501 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1176,7 +1176,7 @@ void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, memset(&fl6, 0, sizeof(fl6)); fl6.flowi6_oif = oif; - fl6.flowi6_mark = mark; + fl6.flowi6_mark = mark ? mark : IP6_REPLY_MARK(net, skb->mark); fl6.daddr = iph->daddr; fl6.saddr = iph->saddr; fl6.flowlabel = ip6_flowinfo(iph); @@ -1455,7 +1455,7 @@ static int ip6_dst_gc(struct dst_ops *ops) goto out; net->ipv6.ip6_rt_gc_expire++; - fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net, entries > rt_max_size); + fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net, true); entries = dst_entries_get_slow(ops); if (entries < ops->gc_thresh) net->ipv6.ip6_rt_gc_expire = rt_gc_timeout>>1; diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index e5a453ca302e..2e9ba035fb5f 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -250,7 +250,8 @@ static struct ip_tunnel *ipip6_tunnel_locate(struct net *net, else strcpy(name, "sit%d"); - dev = alloc_netdev(sizeof(*t), name, ipip6_tunnel_setup); + dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, + ipip6_tunnel_setup); if (dev == NULL) return NULL; @@ -560,12 +561,12 @@ static int ipip6_err(struct sk_buff *skb, u32 info) if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { ipv4_update_pmtu(skb, dev_net(skb->dev), info, - t->dev->ifindex, 0, IPPROTO_IPV6, 0); + t->parms.link, 0, IPPROTO_IPV6, 0); err = 0; goto out; } if (type == ICMP_REDIRECT) { - ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0, + ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0, IPPROTO_IPV6, 0); err = 0; goto out; @@ -1729,6 +1730,7 @@ static int __net_init sit_init_net(struct net *net) sitn->tunnels[3] = sitn->tunnels_r_l; sitn->fb_tunnel_dev = alloc_netdev(sizeof(struct ip_tunnel), "sit0", + NET_NAME_UNKNOWN, ipip6_tunnel_setup); if (!sitn->fb_tunnel_dev) { err = -ENOMEM; @@ -1828,4 +1830,5 @@ xfrm_tunnel_failed: module_init(sit_init); module_exit(sit_cleanup); MODULE_LICENSE("GPL"); +MODULE_ALIAS_RTNL_LINK("sit"); MODULE_ALIAS_NETDEV("sit0"); diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index bb53a5e73c1a..83cea1d39466 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -187,7 +187,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) goto out; ret = NULL; - req = inet6_reqsk_alloc(&tcp6_request_sock_ops); + req = inet_reqsk_alloc(&tcp6_request_sock_ops); if (!req) goto out; @@ -216,6 +216,8 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) ireq->ir_iif = inet6_iif(skb); + ireq->ir_mark = inet_request_mark(sk, skb); + req->expires = 0UL; req->num_retrans = 0; ireq->ecn_ok = ecn_ok; @@ -242,7 +244,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) final_p = fl6_update_dst(&fl6, np->opt, &final); fl6.saddr = ireq->ir_v6_loc_addr; fl6.flowi6_oif = sk->sk_bound_dev_if; - fl6.flowi6_mark = sk->sk_mark; + fl6.flowi6_mark = ireq->ir_mark; fl6.fl6_dport = ireq->ir_rmt_port; fl6.fl6_sport = inet_sk(sk)->inet_sport; security_req_classify_flow(req, flowi6_to_flowi(&fl6)); diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c index 7f405a168822..0c56c93619e0 100644 --- a/net/ipv6/sysctl_net_ipv6.c +++ b/net/ipv6/sysctl_net_ipv6.c @@ -38,6 +38,20 @@ static struct ctl_table ipv6_table_template[] = { .mode = 0644, .proc_handler = proc_dointvec }, + { + .procname = "auto_flowlabels", + .data = &init_net.ipv6.sysctl.auto_flowlabels, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec + }, + { + .procname = "fwmark_reflect", + .data = &init_net.ipv6.sysctl.fwmark_reflect, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec + }, { } }; @@ -67,6 +81,8 @@ static int __net_init ipv6_sysctl_net_init(struct net *net) ipv6_table[0].data = &net->ipv6.sysctl.bindv6only; ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply; ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency; + ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels; + ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect; ipv6_route_table = ipv6_route_sysctl_init(net); if (!ipv6_route_table) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index e289830ed6e3..f2ce95502392 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -198,6 +198,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, sk->sk_v6_daddr = usin->sin6_addr; np->flow_label = fl6.flowlabel; + ip6_set_txhash(sk); + /* * TCP over IPv4 */ @@ -340,7 +342,8 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, struct sock *sk; int err; struct tcp_sock *tp; - __u32 seq; + struct request_sock *fastopen; + __u32 seq, snd_una; struct net *net = dev_net(skb->dev); sk = inet6_lookup(net, &tcp_hashinfo, &hdr->daddr, @@ -371,8 +374,11 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, tp = tcp_sk(sk); seq = ntohl(th->seq); + /* XXX (TFO) - tp->snd_una should be ISN (tcp_create_openreq_child() */ + fastopen = tp->fastopen_rsk; + snd_una = fastopen ? tcp_rsk(fastopen)->snt_isn : tp->snd_una; if (sk->sk_state != TCP_LISTEN && - !between(seq, tp->snd_una, tp->snd_nxt)) { + !between(seq, snd_una, tp->snd_nxt)) { NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS); goto out; } @@ -436,8 +442,13 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, goto out; case TCP_SYN_SENT: - case TCP_SYN_RECV: /* Cannot happen. - It can, it SYNs are crossed. --ANK */ + case TCP_SYN_RECV: + /* Only in fast or simultaneous open. If a fast open socket is + * is already accepted it is treated as a connected one below. + */ + if (fastopen && fastopen->sk == NULL) + break; + if (!sock_owned_by_user(sk)) { sk->sk_err = err; sk->sk_error_report(sk); /* Wake people up to see the error (see connect in sock.c) */ @@ -461,12 +472,14 @@ out: static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst, - struct flowi6 *fl6, + struct flowi *fl, struct request_sock *req, - u16 queue_mapping) + u16 queue_mapping, + struct tcp_fastopen_cookie *foc) { struct inet_request_sock *ireq = inet_rsk(req); struct ipv6_pinfo *np = inet6_sk(sk); + struct flowi6 *fl6 = &fl->u.ip6; struct sk_buff *skb; int err = -ENOMEM; @@ -474,7 +487,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst, if (!dst && (dst = inet6_csk_route_req(sk, fl6, req)) == NULL) goto done; - skb = tcp_make_synack(sk, dst, req, NULL); + skb = tcp_make_synack(sk, dst, req, foc); if (skb) { __tcp_v6_send_check(skb, &ireq->ir_v6_loc_addr, @@ -493,18 +506,6 @@ done: return err; } -static int tcp_v6_rtx_synack(struct sock *sk, struct request_sock *req) -{ - struct flowi6 fl6; - int res; - - res = tcp_v6_send_synack(sk, NULL, &fl6, req, 0); - if (!res) { - TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS); - NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS); - } - return res; -} static void tcp_v6_reqsk_destructor(struct request_sock *req) { @@ -666,7 +667,8 @@ clear_hash_noput: return 1; } -static int tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb) +static int __tcp_v6_inbound_md5_hash(struct sock *sk, + const struct sk_buff *skb) { const __u8 *hash_location = NULL; struct tcp_md5sig_key *hash_expected; @@ -706,24 +708,80 @@ static int tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb) } return 0; } + +static int tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb) +{ + int ret; + + rcu_read_lock(); + ret = __tcp_v6_inbound_md5_hash(sk, skb); + rcu_read_unlock(); + + return ret; +} + #endif +static void tcp_v6_init_req(struct request_sock *req, struct sock *sk, + struct sk_buff *skb) +{ + struct inet_request_sock *ireq = inet_rsk(req); + struct ipv6_pinfo *np = inet6_sk(sk); + + ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr; + ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr; + + ireq->ir_iif = sk->sk_bound_dev_if; + + /* So that link locals have meaning */ + if (!sk->sk_bound_dev_if && + ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) + ireq->ir_iif = inet6_iif(skb); + + if (!TCP_SKB_CB(skb)->when && + (ipv6_opt_accepted(sk, skb) || np->rxopt.bits.rxinfo || + np->rxopt.bits.rxoinfo || np->rxopt.bits.rxhlim || + np->rxopt.bits.rxohlim || np->repflow)) { + atomic_inc(&skb->users); + ireq->pktopts = skb; + } +} + +static struct dst_entry *tcp_v6_route_req(struct sock *sk, struct flowi *fl, + const struct request_sock *req, + bool *strict) +{ + if (strict) + *strict = true; + return inet6_csk_route_req(sk, &fl->u.ip6, req); +} + struct request_sock_ops tcp6_request_sock_ops __read_mostly = { .family = AF_INET6, .obj_size = sizeof(struct tcp6_request_sock), - .rtx_syn_ack = tcp_v6_rtx_synack, + .rtx_syn_ack = tcp_rtx_synack, .send_ack = tcp_v6_reqsk_send_ack, .destructor = tcp_v6_reqsk_destructor, .send_reset = tcp_v6_send_reset, .syn_ack_timeout = tcp_syn_ack_timeout, }; -#ifdef CONFIG_TCP_MD5SIG static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = { + .mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - + sizeof(struct ipv6hdr), +#ifdef CONFIG_TCP_MD5SIG .md5_lookup = tcp_v6_reqsk_md5_lookup, .calc_md5_hash = tcp_v6_md5_hash_skb, -}; #endif + .init_req = tcp_v6_init_req, +#ifdef CONFIG_SYN_COOKIES + .cookie_init_seq = cookie_v6_init_sequence, +#endif + .route_req = tcp_v6_route_req, + .init_seq = tcp_v6_init_sequence, + .send_synack = tcp_v6_send_synack, + .queue_hash_add = inet6_csk_reqsk_queue_hash_add, +}; static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 tsval, u32 tsecr, int oif, @@ -802,6 +860,7 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win, fl6.flowi6_oif = inet6_iif(skb); else fl6.flowi6_oif = oif; + fl6.flowi6_mark = IP6_REPLY_MARK(net, skb->mark); fl6.fl6_dport = t1->dest; fl6.fl6_sport = t1->source; security_skb_classify_flow(skb, flowi6_to_flowi(&fl6)); @@ -917,7 +976,12 @@ static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb) static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb, struct request_sock *req) { - tcp_v6_send_ack(skb, tcp_rsk(req)->snt_isn + 1, tcp_rsk(req)->rcv_isn + 1, + /* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV + * sk->sk_state == TCP_SYN_RECV -> for Fast Open. + */ + tcp_v6_send_ack(skb, (sk->sk_state == TCP_LISTEN) ? + tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt, + tcp_rsk(req)->rcv_nxt, req->rcv_wnd, tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if, tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr), 0, 0); @@ -957,142 +1021,17 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk, struct sk_buff *skb) return sk; } -/* FIXME: this is substantially similar to the ipv4 code. - * Can some kind of merge be done? -- erics - */ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) { - struct tcp_options_received tmp_opt; - struct request_sock *req; - struct inet_request_sock *ireq; - struct ipv6_pinfo *np = inet6_sk(sk); - struct tcp_sock *tp = tcp_sk(sk); - __u32 isn = TCP_SKB_CB(skb)->when; - struct dst_entry *dst = NULL; - struct flowi6 fl6; - bool want_cookie = false; - if (skb->protocol == htons(ETH_P_IP)) return tcp_v4_conn_request(sk, skb); if (!ipv6_unicast_destination(skb)) goto drop; - if ((sysctl_tcp_syncookies == 2 || - inet_csk_reqsk_queue_is_full(sk)) && !isn) { - want_cookie = tcp_syn_flood_action(sk, skb, "TCPv6"); - if (!want_cookie) - goto drop; - } + return tcp_conn_request(&tcp6_request_sock_ops, + &tcp_request_sock_ipv6_ops, sk, skb); - if (sk_acceptq_is_full(sk) && inet_csk_reqsk_queue_young(sk) > 1) { - NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS); - goto drop; - } - - req = inet6_reqsk_alloc(&tcp6_request_sock_ops); - if (req == NULL) - goto drop; - -#ifdef CONFIG_TCP_MD5SIG - tcp_rsk(req)->af_specific = &tcp_request_sock_ipv6_ops; -#endif - - tcp_clear_options(&tmp_opt); - tmp_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr); - tmp_opt.user_mss = tp->rx_opt.user_mss; - tcp_parse_options(skb, &tmp_opt, 0, NULL); - - if (want_cookie && !tmp_opt.saw_tstamp) - tcp_clear_options(&tmp_opt); - - tmp_opt.tstamp_ok = tmp_opt.saw_tstamp; - tcp_openreq_init(req, &tmp_opt, skb); - - ireq = inet_rsk(req); - ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr; - ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr; - if (!want_cookie || tmp_opt.tstamp_ok) - TCP_ECN_create_request(req, skb, sock_net(sk)); - - ireq->ir_iif = sk->sk_bound_dev_if; - - /* So that link locals have meaning */ - if (!sk->sk_bound_dev_if && - ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) - ireq->ir_iif = inet6_iif(skb); - - if (!isn) { - if (ipv6_opt_accepted(sk, skb) || - np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo || - np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim || - np->repflow) { - atomic_inc(&skb->users); - ireq->pktopts = skb; - } - - if (want_cookie) { - isn = cookie_v6_init_sequence(sk, skb, &req->mss); - req->cookie_ts = tmp_opt.tstamp_ok; - goto have_isn; - } - - /* VJ's idea. We save last timestamp seen - * from the destination in peer table, when entering - * state TIME-WAIT, and check against it before - * accepting new connection request. - * - * If "isn" is not zero, this request hit alive - * timewait bucket, so that all the necessary checks - * are made in the function processing timewait state. - */ - if (tmp_opt.saw_tstamp && - tcp_death_row.sysctl_tw_recycle && - (dst = inet6_csk_route_req(sk, &fl6, req)) != NULL) { - if (!tcp_peer_is_proven(req, dst, true)) { - NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_PAWSPASSIVEREJECTED); - goto drop_and_release; - } - } - /* Kill the following clause, if you dislike this way. */ - else if (!sysctl_tcp_syncookies && - (sysctl_max_syn_backlog - inet_csk_reqsk_queue_len(sk) < - (sysctl_max_syn_backlog >> 2)) && - !tcp_peer_is_proven(req, dst, false)) { - /* Without syncookies last quarter of - * backlog is filled with destinations, - * proven to be alive. - * It means that we continue to communicate - * to destinations, already remembered - * to the moment of synflood. - */ - LIMIT_NETDEBUG(KERN_DEBUG "TCP: drop open request from %pI6/%u\n", - &ireq->ir_v6_rmt_addr, ntohs(tcp_hdr(skb)->source)); - goto drop_and_release; - } - - isn = tcp_v6_init_sequence(skb); - } -have_isn: - tcp_rsk(req)->snt_isn = isn; - - if (security_inet_conn_request(sk, skb, req)) - goto drop_and_release; - - if (tcp_v6_send_synack(sk, dst, &fl6, req, - skb_get_queue_mapping(skb)) || - want_cookie) - goto drop_and_free; - - tcp_rsk(req)->snt_synack = tcp_time_stamp; - tcp_rsk(req)->listener = NULL; - inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT); - return 0; - -drop_and_release: - dst_release(dst); -drop_and_free: - reqsk_free(req); drop: NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS); return 0; /* don't send reset */ @@ -1208,6 +1147,8 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb, newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr; newsk->sk_bound_dev_if = ireq->ir_iif; + ip6_set_txhash(newsk); + /* Now IPv6 options... First: no IPv4 options. @@ -1294,25 +1235,6 @@ out: return NULL; } -static __sum16 tcp_v6_checksum_init(struct sk_buff *skb) -{ - if (skb->ip_summed == CHECKSUM_COMPLETE) { - if (!tcp_v6_check(skb->len, &ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, skb->csum)) { - skb->ip_summed = CHECKSUM_UNNECESSARY; - return 0; - } - } - - skb->csum = ~csum_unfold(tcp_v6_check(skb->len, - &ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, 0)); - - if (skb->len <= 76) - return __skb_checksum_complete(skb); - return 0; -} - /* The socket must have it's spinlock held when we get * here. * @@ -1338,11 +1260,6 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) if (skb->protocol == htons(ETH_P_IP)) return tcp_v4_do_rcv(sk, skb); -#ifdef CONFIG_TCP_MD5SIG - if (tcp_v6_inbound_md5_hash(sk, skb)) - goto discard; -#endif - if (sk_filter(sk, skb)) goto discard; @@ -1486,7 +1403,7 @@ static int tcp_v6_rcv(struct sk_buff *skb) if (!pskb_may_pull(skb, th->doff*4)) goto discard_it; - if (!skb_csum_unnecessary(skb) && tcp_v6_checksum_init(skb)) + if (skb_checksum_init(skb, IPPROTO_TCP, ip6_compute_pseudo)) goto csum_error; th = tcp_hdr(skb); @@ -1515,6 +1432,11 @@ process: if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) goto discard_and_relse; +#ifdef CONFIG_TCP_MD5SIG + if (tcp_v6_inbound_md5_hash(sk, skb)) + goto discard_and_relse; +#endif + if (sk_filter(sk, skb)) goto discard_and_relse; @@ -1779,6 +1701,7 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) const struct inet_sock *inet = inet_sk(sp); const struct tcp_sock *tp = tcp_sk(sp); const struct inet_connection_sock *icsk = inet_csk(sp); + struct fastopen_queue *fastopenq = icsk->icsk_accept_queue.fastopenq; dest = &sp->sk_v6_daddr; src = &sp->sk_v6_rcv_saddr; @@ -1821,7 +1744,9 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) jiffies_to_clock_t(icsk->icsk_ack.ato), (icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong, tp->snd_cwnd, - tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh + sp->sk_state == TCP_LISTEN ? + (fastopenq ? fastopenq->max_qlen : 0) : + (tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh) ); } @@ -1981,7 +1906,6 @@ static struct inet_protosw tcpv6_protosw = { .protocol = IPPROTO_TCP, .prot = &tcpv6_prot, .ops = &inet6_stream_ops, - .no_check = 0, .flags = INET_PROTOSW_PERMANENT | INET_PROTOSW_ICSK, }; diff --git a/net/ipv6/tcpv6_offload.c b/net/ipv6/tcpv6_offload.c index 8517d3cd1aed..01b0ff9a0c2c 100644 --- a/net/ipv6/tcpv6_offload.c +++ b/net/ipv6/tcpv6_offload.c @@ -73,7 +73,7 @@ static int tcp6_gro_complete(struct sk_buff *skb, int thoff) th->check = ~tcp_v6_check(skb->len - thoff, &iph->saddr, &iph->daddr, 0); - skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; + skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6; return tcp_gro_complete(skb); } diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 1e586d92260e..4836af8f582d 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -79,7 +79,6 @@ static unsigned int udp6_ehashfn(struct net *net, int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2) { const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2); - int sk_ipv6only = ipv6_only_sock(sk); int sk2_ipv6only = inet_v6_ipv6only(sk2); int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr); int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED; @@ -95,7 +94,7 @@ int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2) return 1; if (addr_type == IPV6_ADDR_ANY && - !(sk_ipv6only && addr_type2 == IPV6_ADDR_MAPPED)) + !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED)) return 1; if (sk2_rcv_saddr6 && @@ -473,7 +472,7 @@ try_again: sin6->sin6_addr = ipv6_hdr(skb)->saddr; sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr, - IP6CB(skb)->iif); + inet6_iif(skb)); } *addr_len = sizeof(*sin6); } @@ -534,11 +533,15 @@ void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt, struct udphdr *uh = (struct udphdr*)(skb->data+offset); struct sock *sk; int err; + struct net *net = dev_net(skb->dev); - sk = __udp6_lib_lookup(dev_net(skb->dev), daddr, uh->dest, + sk = __udp6_lib_lookup(net, daddr, uh->dest, saddr, uh->source, inet6_iif(skb), udptable); - if (sk == NULL) + if (sk == NULL) { + ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev), + ICMP6_MIB_INERRORS); return; + } if (type == ICMPV6_PKT_TOOBIG) { if (!ip6_sk_accept_pmtu(sk)) @@ -634,6 +637,10 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) if (skb->len > sizeof(struct udphdr) && encap_rcv != NULL) { int ret; + /* Verify checksum before giving to encap */ + if (udp_lib_checksum_complete(skb)) + goto csum_error; + ret = encap_rcv(sk, skb); if (ret <= 0) { UDP_INC_STATS_BH(sock_net(sk), @@ -670,8 +677,11 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) goto csum_error; } - if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) + if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) { + UDP6_INC_STATS_BH(sock_net(sk), + UDP_MIB_RCVBUFERRORS, is_udplite); goto drop; + } skb_dst_drop(skb); @@ -686,6 +696,7 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) bh_unlock_sock(sk); return rc; + csum_error: UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite); drop: @@ -695,44 +706,26 @@ drop: return -1; } -static struct sock *udp_v6_mcast_next(struct net *net, struct sock *sk, - __be16 loc_port, const struct in6_addr *loc_addr, - __be16 rmt_port, const struct in6_addr *rmt_addr, - int dif) +static bool __udp_v6_is_mcast_sock(struct net *net, struct sock *sk, + __be16 loc_port, const struct in6_addr *loc_addr, + __be16 rmt_port, const struct in6_addr *rmt_addr, + int dif, unsigned short hnum) { - struct hlist_nulls_node *node; - struct sock *s = sk; - unsigned short num = ntohs(loc_port); - - sk_nulls_for_each_from(s, node) { - struct inet_sock *inet = inet_sk(s); - - if (!net_eq(sock_net(s), net)) - continue; - - if (udp_sk(s)->udp_port_hash == num && - s->sk_family == PF_INET6) { - if (inet->inet_dport) { - if (inet->inet_dport != rmt_port) - continue; - } - if (!ipv6_addr_any(&sk->sk_v6_daddr) && - !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr)) - continue; - - if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif) - continue; + struct inet_sock *inet = inet_sk(sk); - if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) { - if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr)) - continue; - } - if (!inet6_mc_check(s, loc_addr, rmt_addr)) - continue; - return s; - } - } - return NULL; + if (!net_eq(sock_net(sk), net)) + return false; + + if (udp_sk(sk)->udp_port_hash != hnum || + sk->sk_family != PF_INET6 || + (inet->inet_dport && inet->inet_dport != rmt_port) || + (!ipv6_addr_any(&sk->sk_v6_daddr) && + !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr)) || + (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)) + return false; + if (!inet6_mc_check(sk, loc_addr, rmt_addr)) + return false; + return true; } static void flush_stack(struct sock **stack, unsigned int count, @@ -756,10 +749,22 @@ static void flush_stack(struct sock **stack, unsigned int count, if (skb1 && udpv6_queue_rcv_skb(sk, skb1) <= 0) skb1 = NULL; + sock_put(sk); } if (unlikely(skb1)) kfree_skb(skb1); } + +static void udp6_csum_zero_error(struct sk_buff *skb) +{ + /* RFC 2460 section 8.1 says that we SHOULD log + * this error. Well, it is reasonable. + */ + LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0 for [%pI6c]:%u->[%pI6c]:%u\n", + &ipv6_hdr(skb)->saddr, ntohs(udp_hdr(skb)->source), + &ipv6_hdr(skb)->daddr, ntohs(udp_hdr(skb)->dest)); +} + /* * Note: called only from the BH handler context, * so we don't need to lock the hashes. @@ -770,38 +775,51 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb, { struct sock *sk, *stack[256 / sizeof(struct sock *)]; const struct udphdr *uh = udp_hdr(skb); - struct udp_hslot *hslot = udp_hashslot(udptable, net, ntohs(uh->dest)); - int dif; - unsigned int i, count = 0; + struct hlist_nulls_node *node; + unsigned short hnum = ntohs(uh->dest); + struct udp_hslot *hslot = udp_hashslot(udptable, net, hnum); + int dif = inet6_iif(skb); + unsigned int count = 0, offset = offsetof(typeof(*sk), sk_nulls_node); + unsigned int hash2 = 0, hash2_any = 0, use_hash2 = (hslot->count > 10); + + if (use_hash2) { + hash2_any = udp6_portaddr_hash(net, &in6addr_any, hnum) & + udp_table.mask; + hash2 = udp6_portaddr_hash(net, daddr, hnum) & udp_table.mask; +start_lookup: + hslot = &udp_table.hash2[hash2]; + offset = offsetof(typeof(*sk), __sk_common.skc_portaddr_node); + } spin_lock(&hslot->lock); - sk = sk_nulls_head(&hslot->head); - dif = inet6_iif(skb); - sk = udp_v6_mcast_next(net, sk, uh->dest, daddr, uh->source, saddr, dif); - while (sk) { - stack[count++] = sk; - sk = udp_v6_mcast_next(net, sk_nulls_next(sk), uh->dest, daddr, - uh->source, saddr, dif); - if (unlikely(count == ARRAY_SIZE(stack))) { - if (!sk) - break; - flush_stack(stack, count, skb, ~0); - count = 0; + sk_nulls_for_each_entry_offset(sk, node, &hslot->head, offset) { + if (__udp_v6_is_mcast_sock(net, sk, + uh->dest, daddr, + uh->source, saddr, + dif, hnum) && + /* If zero checksum and no_check is not on for + * the socket then skip it. + */ + (uh->check || udp_sk(sk)->no_check6_rx)) { + if (unlikely(count == ARRAY_SIZE(stack))) { + flush_stack(stack, count, skb, ~0); + count = 0; + } + stack[count++] = sk; + sock_hold(sk); } } - /* - * before releasing the lock, we must take reference on sockets - */ - for (i = 0; i < count; i++) - sock_hold(stack[i]); spin_unlock(&hslot->lock); + /* Also lookup *:port if we are using hash2 and haven't done so yet. */ + if (use_hash2 && hash2 != hash2_any) { + hash2 = hash2_any; + goto start_lookup; + } + if (count) { flush_stack(stack, count, skb, count - 1); - - for (i = 0; i < count; i++) - sock_put(stack[i]); } else { kfree_skb(skb); } @@ -867,6 +885,12 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (sk != NULL) { int ret; + if (!uh->check && !udp_sk(sk)->no_check6_rx) { + sock_put(sk); + udp6_csum_zero_error(skb); + goto csum_error; + } + ret = udpv6_queue_rcv_skb(sk, skb); sock_put(sk); @@ -879,6 +903,11 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, return 0; } + if (!uh->check) { + udp6_csum_zero_error(skb); + goto csum_error; + } + if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) goto discard; @@ -1006,7 +1035,10 @@ static int udp_v6_push_pending_frames(struct sock *sk) if (is_udplite) csum = udplite_csum_outgoing(sk, skb); - else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */ + else if (up->no_check6_tx) { /* UDP csum disabled */ + skb->ip_summed = CHECKSUM_NONE; + goto send; + } else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */ udp6_hwcsum_outgoing(sk, skb, &fl6->saddr, &fl6->daddr, up->len); goto send; @@ -1232,14 +1264,8 @@ do_udp_sendmsg: goto out; } - if (hlimit < 0) { - if (ipv6_addr_is_multicast(&fl6.daddr)) - hlimit = np->mcast_hops; - else - hlimit = np->hop_limit; - if (hlimit < 0) - hlimit = ip6_dst_hoplimit(dst); - } + if (hlimit < 0) + hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); if (tclass < 0) tclass = np->tclass; @@ -1479,7 +1505,6 @@ static struct inet_protosw udpv6_protosw = { .protocol = IPPROTO_UDP, .prot = &udpv6_prot, .ops = &inet6_dgram_ops, - .no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_PERMANENT, }; diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c index b261ee8b83fc..0ae3d98f83e0 100644 --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -63,7 +63,9 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY | SKB_GSO_UDP_TUNNEL | + SKB_GSO_UDP_TUNNEL_CSUM | SKB_GSO_GRE | + SKB_GSO_GRE_CSUM | SKB_GSO_IPIP | SKB_GSO_SIT | SKB_GSO_MPLS) || @@ -76,7 +78,8 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, goto out; } - if (skb->encapsulation && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) + if (skb->encapsulation && skb_shinfo(skb)->gso_type & + (SKB_GSO_UDP_TUNNEL|SKB_GSO_UDP_TUNNEL_CSUM)) segs = skb_udp_tunnel_segment(skb, features); else { /* Do software UFO. Complete and fill in the UDP checksum as HW cannot diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c index dfcc4be46898..9cf097e206e9 100644 --- a/net/ipv6/udplite.c +++ b/net/ipv6/udplite.c @@ -64,7 +64,6 @@ static struct inet_protosw udplite6_protosw = { .protocol = IPPROTO_UDPLITE, .prot = &udplitev6_prot, .ops = &inet6_dgram_ops, - .no_check = 0, .flags = INET_PROTOSW_PERMANENT, }; diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c index b930d080c66f..433672d07d0b 100644 --- a/net/ipv6/xfrm6_output.c +++ b/net/ipv6/xfrm6_output.c @@ -78,7 +78,7 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb) if (mtu < IPV6_MIN_MTU) mtu = IPV6_MIN_MTU; - if (!skb->local_df && skb->len > mtu) { + if (!skb->ignore_df && skb->len > mtu) { skb->dev = dst->dev; if (xfrm6_local_dontfrag(skb)) @@ -114,7 +114,7 @@ int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb) if (err) return err; - skb->local_df = 1; + skb->ignore_df = 1; return x->outer_mode->output2(x, skb); } @@ -153,7 +153,7 @@ static int __xfrm6_output(struct sk_buff *skb) if (skb->len > mtu && xfrm6_local_dontfrag(skb)) { xfrm6_local_rxpmtu(skb, mtu); return -EMSGSIZE; - } else if (!skb->local_df && skb->len > mtu && skb->sk) { + } else if (!skb->ignore_df && skb->len > mtu && skb->sk) { xfrm_local_error(skb, mtu); return -EMSGSIZE; } |
