diff options
Diffstat (limited to 'net/netfilter')
-rw-r--r-- | net/netfilter/Kconfig | 14 | ||||
-rw-r--r-- | net/netfilter/Makefile | 2 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_acct.c | 104 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_core.c | 58 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_extend.c | 10 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 76 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_proto_dccp.c | 3 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_proto_sctp.c | 80 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 11 | ||||
-rw-r--r-- | net/netfilter/nf_conntrack_standalone.c | 18 | ||||
-rw-r--r-- | net/netfilter/nf_sockopt.c | 2 | ||||
-rw-r--r-- | net/netfilter/nfnetlink_log.c | 8 | ||||
-rw-r--r-- | net/netfilter/nfnetlink_queue.c | 3 | ||||
-rw-r--r-- | net/netfilter/xt_CONNSECMARK.c | 10 | ||||
-rw-r--r-- | net/netfilter/xt_SECMARK.c | 10 | ||||
-rw-r--r-- | net/netfilter/xt_TCPMSS.c | 42 | ||||
-rw-r--r-- | net/netfilter/xt_connbytes.c | 8 | ||||
-rw-r--r-- | net/netfilter/xt_string.c | 38 | ||||
-rw-r--r-- | net/netfilter/xt_time.c | 2 |
19 files changed, 371 insertions, 128 deletions
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index aa8d80c35e2..ee898e74808 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -33,9 +33,8 @@ config NF_CONNTRACK into connections. This is required to do Masquerading or other kinds of Network - Address Translation (except for Fast NAT). It can also be used to - enhance packet filtering (see `Connection state match support' - below). + Address Translation. It can also be used to enhance packet + filtering (see `Connection state match support' below). To compile it as a module, choose M here. If unsure, say N. @@ -50,6 +49,15 @@ config NF_CT_ACCT Those counters can be used for flow-based accounting or the `connbytes' match. + Please note that currently this option only sets a default state. + You may change it at boot time with nf_conntrack.acct=0/1 kernel + paramater or by loading the nf_conntrack module with acct=0/1. + + You may also disable/enable it on a running system with: + sysctl net.netfilter.nf_conntrack_acct=0/1 + + This option will be removed in 2.6.29. + If unsure, say `N'. config NF_CONNTRACK_MARK diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile index 5c4b183f642..3bd2cc556ae 100644 --- a/net/netfilter/Makefile +++ b/net/netfilter/Makefile @@ -1,6 +1,6 @@ netfilter-objs := core.o nf_log.o nf_queue.o nf_sockopt.o -nf_conntrack-y := nf_conntrack_core.o nf_conntrack_standalone.o nf_conntrack_expect.o nf_conntrack_helper.o nf_conntrack_proto.o nf_conntrack_l3proto_generic.o nf_conntrack_proto_generic.o nf_conntrack_proto_tcp.o nf_conntrack_proto_udp.o nf_conntrack_extend.o +nf_conntrack-y := nf_conntrack_core.o nf_conntrack_standalone.o nf_conntrack_expect.o nf_conntrack_helper.o nf_conntrack_proto.o nf_conntrack_l3proto_generic.o nf_conntrack_proto_generic.o nf_conntrack_proto_tcp.o nf_conntrack_proto_udp.o nf_conntrack_extend.o nf_conntrack_acct.o nf_conntrack-$(CONFIG_NF_CONNTRACK_EVENTS) += nf_conntrack_ecache.o obj-$(CONFIG_NETFILTER) = netfilter.o diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c new file mode 100644 index 00000000000..59bd8b903a1 --- /dev/null +++ b/net/netfilter/nf_conntrack_acct.c @@ -0,0 +1,104 @@ +/* Accouting handling for netfilter. */ + +/* + * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl> + * + * 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/netfilter.h> +#include <linux/kernel.h> +#include <linux/moduleparam.h> + +#include <net/netfilter/nf_conntrack.h> +#include <net/netfilter/nf_conntrack_extend.h> +#include <net/netfilter/nf_conntrack_acct.h> + +#ifdef CONFIG_NF_CT_ACCT +#define NF_CT_ACCT_DEFAULT 1 +#else +#define NF_CT_ACCT_DEFAULT 0 +#endif + +int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT; +EXPORT_SYMBOL_GPL(nf_ct_acct); + +module_param_named(acct, nf_ct_acct, bool, 0644); +MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting."); + +#ifdef CONFIG_SYSCTL +static struct ctl_table_header *acct_sysctl_header; +static struct ctl_table acct_sysctl_table[] = { + { + .ctl_name = CTL_UNNUMBERED, + .procname = "nf_conntrack_acct", + .data = &nf_ct_acct, + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + {} +}; +#endif /* CONFIG_SYSCTL */ + +unsigned int +seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir) +{ + struct nf_conn_counter *acct; + + acct = nf_conn_acct_find(ct); + if (!acct) + return 0; + + return seq_printf(s, "packets=%llu bytes=%llu ", + (unsigned long long)acct[dir].packets, + (unsigned long long)acct[dir].bytes); +}; +EXPORT_SYMBOL_GPL(seq_print_acct); + +static struct nf_ct_ext_type acct_extend __read_mostly = { + .len = sizeof(struct nf_conn_counter[IP_CT_DIR_MAX]), + .align = __alignof__(struct nf_conn_counter[IP_CT_DIR_MAX]), + .id = NF_CT_EXT_ACCT, +}; + +int nf_conntrack_acct_init(void) +{ + int ret; + +#ifdef CONFIG_NF_CT_ACCT + printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n"); + printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n"); + printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n"); +#endif + + ret = nf_ct_extend_register(&acct_extend); + if (ret < 0) { + printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n"); + return ret; + } + +#ifdef CONFIG_SYSCTL + acct_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path, + acct_sysctl_table); + + if (!acct_sysctl_header) { + nf_ct_extend_unregister(&acct_extend); + + printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n"); + return -ENOMEM; + } +#endif + + return 0; +} + +void nf_conntrack_acct_fini(void) +{ +#ifdef CONFIG_SYSCTL + unregister_sysctl_table(acct_sysctl_header); +#endif + nf_ct_extend_unregister(&acct_extend); +} diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 662c1ccfee2..c519d090bdb 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -37,6 +37,7 @@ #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_core.h> #include <net/netfilter/nf_conntrack_extend.h> +#include <net/netfilter/nf_conntrack_acct.h> #define NF_CONNTRACK_VERSION "0.5.0" @@ -464,7 +465,8 @@ static noinline int early_drop(unsigned int hash) } struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, - const struct nf_conntrack_tuple *repl) + const struct nf_conntrack_tuple *repl, + gfp_t gfp) { struct nf_conn *ct = NULL; @@ -489,7 +491,7 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, } } - ct = kmem_cache_zalloc(nf_conntrack_cachep, GFP_ATOMIC); + ct = kmem_cache_zalloc(nf_conntrack_cachep, gfp); if (ct == NULL) { pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n"); atomic_dec(&nf_conntrack_count); @@ -542,7 +544,7 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, return NULL; } - ct = nf_conntrack_alloc(tuple, &repl_tuple); + ct = nf_conntrack_alloc(tuple, &repl_tuple, GFP_ATOMIC); if (ct == NULL || IS_ERR(ct)) { pr_debug("Can't allocate conntrack.\n"); return (struct nf_conntrack_tuple_hash *)ct; @@ -554,6 +556,8 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, return NULL; } + nf_ct_acct_ext_add(ct, GFP_ATOMIC); + spin_lock_bh(&nf_conntrack_lock); exp = nf_ct_find_expectation(tuple); if (exp) { @@ -827,17 +831,16 @@ void __nf_ct_refresh_acct(struct nf_conn *ct, } acct: -#ifdef CONFIG_NF_CT_ACCT if (do_acct) { - ct->counters[CTINFO2DIR(ctinfo)].packets++; - ct->counters[CTINFO2DIR(ctinfo)].bytes += - skb->len - skb_network_offset(skb); + struct nf_conn_counter *acct; - if ((ct->counters[CTINFO2DIR(ctinfo)].packets & 0x80000000) - || (ct->counters[CTINFO2DIR(ctinfo)].bytes & 0x80000000)) - event |= IPCT_COUNTER_FILLING; + acct = nf_conn_acct_find(ct); + if (acct) { + acct[CTINFO2DIR(ctinfo)].packets++; + acct[CTINFO2DIR(ctinfo)].bytes += + skb->len - skb_network_offset(skb); + } } -#endif spin_unlock_bh(&nf_conntrack_lock); @@ -847,6 +850,32 @@ acct: } EXPORT_SYMBOL_GPL(__nf_ct_refresh_acct); +bool __nf_ct_kill_acct(struct nf_conn *ct, + enum ip_conntrack_info ctinfo, + const struct sk_buff *skb, + int do_acct) +{ + if (do_acct) { + struct nf_conn_counter *acct; + + spin_lock_bh(&nf_conntrack_lock); + acct = nf_conn_acct_find(ct); + if (acct) { + acct[CTINFO2DIR(ctinfo)].packets++; + acct[CTINFO2DIR(ctinfo)].bytes += + skb->len - skb_network_offset(skb); + } + spin_unlock_bh(&nf_conntrack_lock); + } + + if (del_timer(&ct->timeout)) { + ct->timeout.function((unsigned long)ct); + return true; + } + return false; +} +EXPORT_SYMBOL_GPL(__nf_ct_kill_acct); + #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) #include <linux/netfilter/nfnetlink.h> @@ -1006,6 +1035,7 @@ void nf_conntrack_cleanup(void) nf_conntrack_proto_fini(); nf_conntrack_helper_fini(); nf_conntrack_expect_fini(); + nf_conntrack_acct_fini(); } struct hlist_head *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced) @@ -1145,6 +1175,10 @@ int __init nf_conntrack_init(void) if (ret < 0) goto out_fini_expect; + ret = nf_conntrack_acct_init(); + if (ret < 0) + goto out_fini_helper; + /* For use by REJECT target */ rcu_assign_pointer(ip_ct_attach, nf_conntrack_attach); rcu_assign_pointer(nf_ct_destroy, destroy_conntrack); @@ -1157,6 +1191,8 @@ int __init nf_conntrack_init(void) return ret; +out_fini_helper: + nf_conntrack_helper_fini(); out_fini_expect: nf_conntrack_expect_fini(); out_fini_proto: diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c index 8a3f8b34e46..3469bc71a38 100644 --- a/net/netfilter/nf_conntrack_extend.c +++ b/net/netfilter/nf_conntrack_extend.c @@ -95,13 +95,11 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp) newlen = newoff + t->len; rcu_read_unlock(); - if (newlen >= ksize(ct->ext)) { - new = kmalloc(newlen, gfp); - if (!new) - return NULL; - - memcpy(new, ct->ext, ct->ext->len); + new = krealloc(ct->ext, newlen, gfp); + if (!new) + return NULL; + if (new != ct->ext) { for (i = 0; i < NF_CT_EXT_NUM; i++) { if (!nf_ct_ext_exist(ct, i)) continue; diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 077bcd22879..105a616c5c7 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -4,7 +4,7 @@ * (C) 2001 by Jay Schulist <jschlst@samba.org> * (C) 2002-2006 by Harald Welte <laforge@gnumonks.org> * (C) 2003 by Patrick Mchardy <kaber@trash.net> - * (C) 2005-2007 by Pablo Neira Ayuso <pablo@netfilter.org> + * (C) 2005-2008 by Pablo Neira Ayuso <pablo@netfilter.org> * * Initial connection tracking via netlink development funded and * generally made possible by Network Robots, Inc. (www.networkrobots.com) @@ -37,6 +37,7 @@ #include <net/netfilter/nf_conntrack_l3proto.h> #include <net/netfilter/nf_conntrack_l4proto.h> #include <net/netfilter/nf_conntrack_tuple.h> +#include <net/netfilter/nf_conntrack_acct.h> #ifdef CONFIG_NF_NAT_NEEDED #include <net/netfilter/nf_nat_core.h> #include <net/netfilter/nf_nat_protocol.h> @@ -206,22 +207,26 @@ nla_put_failure: return -1; } -#ifdef CONFIG_NF_CT_ACCT static int ctnetlink_dump_counters(struct sk_buff *skb, const struct nf_conn *ct, enum ip_conntrack_dir dir) { enum ctattr_type type = dir ? CTA_COUNTERS_REPLY: CTA_COUNTERS_ORIG; struct nlattr *nest_count; + const struct nf_conn_counter *acct; + + acct = nf_conn_acct_find(ct); + if (!acct) + return 0; nest_count = nla_nest_start(skb, type | NLA_F_NESTED); if (!nest_count) goto nla_put_failure; - NLA_PUT_BE32(skb, CTA_COUNTERS32_PACKETS, - htonl(ct->counters[dir].packets)); - NLA_PUT_BE32(skb, CTA_COUNTERS32_BYTES, - htonl(ct->counters[dir].bytes)); + NLA_PUT_BE64(skb, CTA_COUNTERS_PACKETS, + cpu_to_be64(acct[dir].packets)); + NLA_PUT_BE64(skb, CTA_COUNTERS_BYTES, + cpu_to_be64(acct[dir].bytes)); nla_nest_end(skb, nest_count); @@ -230,9 +235,6 @@ ctnetlink_dump_counters(struct sk_buff *skb, const struct nf_conn *ct, nla_put_failure: return -1; } -#else -#define ctnetlink_dump_counters(a, b, c) (0) -#endif #ifdef CONFIG_NF_CONNTRACK_MARK static inline int @@ -476,14 +478,14 @@ static int ctnetlink_conntrack_event(struct notifier_block *this, if (ctnetlink_dump_id(skb, ct) < 0) goto nla_put_failure; + if (ctnetlink_dump_status(skb, ct) < 0) + goto nla_put_failure; + if (events & IPCT_DESTROY) { if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 || ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0) goto nla_put_failure; } else { - if (ctnetlink_dump_status(skb, ct) < 0) - goto nla_put_failure; - if (ctnetlink_dump_timeout(skb, ct) < 0) goto nla_put_failure; @@ -501,11 +503,6 @@ static int ctnetlink_conntrack_event(struct notifier_block *this, goto nla_put_failure; #endif - if (events & IPCT_COUNTER_FILLING && - (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 || - ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)) - goto nla_put_failure; - if (events & IPCT_RELATED && ctnetlink_dump_master(skb, ct) < 0) goto nla_put_failure; @@ -576,11 +573,15 @@ restart: cb->args[1] = (unsigned long)ct; goto out; } -#ifdef CONFIG_NF_CT_ACCT + if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == - IPCTNL_MSG_CT_GET_CTRZERO) - memset(&ct->counters, 0, sizeof(ct->counters)); -#endif + IPCTNL_MSG_CT_GET_CTRZERO) { + struct nf_conn_counter *acct; + + acct = nf_conn_acct_find(ct); + if (acct) + memset(acct, 0, sizeof(struct nf_conn_counter[IP_CT_DIR_MAX])); + } } if (cb->args[1]) { cb->args[1] = 0; @@ -813,9 +814,8 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb, return -ENOENT; } } - if (del_timer(&ct->timeout)) - ct->timeout.function((unsigned long)ct); + nf_ct_kill(ct); nf_ct_put(ct); return 0; @@ -833,14 +833,9 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, u_int8_t u3 = nfmsg->nfgen_family; int err = 0; - if (nlh->nlmsg_flags & NLM_F_DUMP) { -#ifndef CONFIG_NF_CT_ACCT - if (NFNL_MSG_TYPE(nlh->nlmsg_type) == IPCTNL_MSG_CT_GET_CTRZERO) - return -ENOTSUPP; -#endif + if (nlh->nlmsg_flags & NLM_F_DUMP) return netlink_dump_start(ctnl, skb, nlh, ctnetlink_dump_table, ctnetlink_done); - } if (cda[CTA_TUPLE_ORIG]) err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_ORIG, u3); @@ -892,20 +887,19 @@ ctnetlink_change_status(struct nf_conn *ct, struct nlattr *cda[]) if (d & (IPS_EXPECTED|IPS_CONFIRMED|IPS_DYING)) /* unchangeable */ - return -EINVAL; + return -EBUSY; if (d & IPS_SEEN_REPLY && !(status & IPS_SEEN_REPLY)) /* SEEN_REPLY bit can only be set */ - return -EINVAL; - + return -EBUSY; if (d & IPS_ASSURED && !(status & IPS_ASSURED)) /* ASSURED bit can only be set */ - return -EINVAL; + return -EBUSY; if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) { #ifndef CONFIG_NF_NAT_NEEDED - return -EINVAL; + return -EOPNOTSUPP; #else struct nf_nat_range range; @@ -946,7 +940,7 @@ ctnetlink_change_helper(struct nf_conn *ct, struct nlattr *cda[]) /* don't change helper of sibling connections */ if (ct->master) - return -EINVAL; + return -EBUSY; err = ctnetlink_parse_help(cda[CTA_HELP], &helpname); if (err < 0) @@ -964,7 +958,7 @@ ctnetlink_change_helper(struct nf_conn *ct, struct nlattr *cda[]) helper = __nf_conntrack_helper_find_byname(helpname); if (helper == NULL) - return -EINVAL; + return -EOPNOTSUPP; if (help) { if (help->helper == helper) @@ -1131,7 +1125,7 @@ ctnetlink_create_conntrack(struct nlattr *cda[], struct nf_conn_help *help; struct nf_conntrack_helper *helper; - ct = nf_conntrack_alloc(otuple, rtuple); + ct = nf_conntrack_alloc(otuple, rtuple, GFP_KERNEL); if (ct == NULL || IS_ERR(ct)) return -ENOMEM; @@ -1154,6 +1148,8 @@ ctnetlink_create_conntrack(struct nlattr *cda[], goto err; } + nf_ct_acct_ext_add(ct, GFP_KERNEL); + #if defined(CONFIG_NF_CONNTRACK_MARK) if (cda[CTA_MARK]) ct->mark = ntohl(nla_get_be32(cda[CTA_MARK])); @@ -1259,12 +1255,12 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, if (!(nlh->nlmsg_flags & NLM_F_EXCL)) { /* we only allow nat config for new conntracks */ if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) { - err = -EINVAL; + err = -EOPNOTSUPP; goto out_unlock; } /* can't link an existing conntrack to a master */ if (cda[CTA_TUPLE_MASTER]) { - err = -EINVAL; + err = -EOPNOTSUPP; goto out_unlock; } err = ctnetlink_change_conntrack(nf_ct_tuplehash_to_ctrack(h), @@ -1609,7 +1605,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, h = __nf_conntrack_helper_find_byname(name); if (!h) { spin_unlock_bh(&nf_conntrack_lock); - return -EINVAL; + return -EOPNOTSUPP; } for (i = 0; i < nf_ct_expect_hsize; i++) { hlist_for_each_entry_safe(exp, n, next, diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index afb4a1861d2..e7866dd3cde 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -475,8 +475,7 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb, if (type == DCCP_PKT_RESET && !test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) { /* Tear down connection immediately if only reply is a RESET */ - if (del_timer(&ct->timeout)) - ct->timeout.function((unsigned long)ct); + nf_ct_kill_acct(ct, ctinfo, skb); return NF_ACCEPT; } diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index cbf2e27a22b..30aa5b94a77 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -463,6 +463,82 @@ static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb, return true; } +#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) + +#include <linux/netfilter/nfnetlink.h> +#include <linux/netfilter/nfnetlink_conntrack.h> + +static int sctp_to_nlattr(struct sk_buff *skb, struct nlattr *nla, + const struct nf_conn *ct) +{ + struct nlattr *nest_parms; + + read_lock_bh(&sctp_lock); + nest_parms = nla_nest_start(skb, CTA_PROTOINFO_SCTP | NLA_F_NESTED); + if (!nest_parms) + goto nla_put_failure; + + NLA_PUT_U8(skb, CTA_PROTOINFO_SCTP_STATE, ct->proto.sctp.state); + + NLA_PUT_BE32(skb, + CTA_PROTOINFO_SCTP_VTAG_ORIGINAL, + ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL]); + + NLA_PUT_BE32(skb, + CTA_PROTOINFO_SCTP_VTAG_REPLY, + ct->proto.sctp.vtag[IP_CT_DIR_REPLY]); + + read_unlock_bh(&sctp_lock); + + nla_nest_end(skb, nest_parms); + + return 0; + +nla_put_failure: + read_unlock_bh(&sctp_lock); + return -1; +} + +static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = { + [CTA_PROTOINFO_SCTP_STATE] = { .type = NLA_U8 }, + [CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 }, + [CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 }, +}; + +static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct) +{ + struct nlattr *attr = cda[CTA_PROTOINFO_SCTP]; + struct nlattr *tb[CTA_PROTOINFO_SCTP_MAX+1]; + int err; + + /* updates may not contain the internal protocol info, skip parsing */ + if (!attr) + return 0; + + err = nla_parse_nested(tb, + CTA_PROTOINFO_SCTP_MAX, + attr, + sctp_nla_policy); + if (err < 0) + return err; + + if (!tb[CTA_PROTOINFO_SCTP_STATE] || + !tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] || + !tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]) + return -EINVAL; + + write_lock_bh(&sctp_lock); + ct->proto.sctp.state = nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]); + ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] = + nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL]); + ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = + nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]); + write_unlock_bh(&sctp_lock); + + return 0; +} +#endif + #ifdef CONFIG_SYSCTL static unsigned int sctp_sysctl_table_users; static struct ctl_table_header *sctp_sysctl_header; @@ -591,6 +667,8 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = { .new = sctp_new, .me = THIS_MODULE, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) + .to_nlattr = sctp_to_nlattr, + .from_nlattr = nlattr_to_sctp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, @@ -617,6 +695,8 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = { .new = sctp_new, .me = THIS_MODULE, #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) + .to_nlattr = sctp_to_nlattr, + .from_nlattr = nlattr_to_sctp, .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, .nla_policy = nf_ct_port_nla_policy, diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index dd28fb239a6..420a10d8eb1 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -844,14 +844,13 @@ static int tcp_packet(struct nf_conn *ct, /* Attempt to reopen a closed/aborted connection. * Delete this connection and look up again. */ write_unlock_bh(&tcp_lock); + /* Only repeat if we can actually remove the timer. * Destruction may already be in progress in process * context and we must give it a chance to terminate. */ - if (del_timer(&ct->timeout)) { - ct->timeout.function((unsigned long)ct); + if (nf_ct_kill(ct)) return -NF_REPEAT; - } return -NF_DROP; } /* Fall through */ @@ -884,8 +883,7 @@ static int tcp_packet(struct nf_conn *ct, if (LOG_INVALID(IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: killing out of sync session "); - if (del_timer(&ct->timeout)) - ct->timeout.function((unsigned long)ct); + nf_ct_kill(ct); return -NF_DROP; } ct->proto.tcp.last_index = index; @@ -968,8 +966,7 @@ static int tcp_packet(struct nf_conn *ct, problem case, so we can delete the conntrack immediately. --RR */ if (th->rst) { - if (del_timer(&ct->timeout)) - ct->timeout.function((unsigned long)ct); + nf_ct_kill_acct(ct, ctinfo, skb); return NF_ACCEPT; } } else if (!test_bit(IPS_ASSURED_BIT, &ct->status) diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index 46ea542d0df..869ef9349d0 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -25,6 +25,7 @@ #include <net/netfilter/nf_conntrack_l4proto.h> #include <net/netfilter/nf_conntrack_expect.h> #include <net/netfilter/nf_conntrack_helper.h> +#include <net/netfilter/nf_conntrack_acct.h> MODULE_LICENSE("GPL"); @@ -38,19 +39,6 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, } EXPORT_SYMBOL_GPL(print_tuple); -#ifdef CONFIG_NF_CT_ACCT -static unsigned int -seq_print_counters(struct seq_file *s, - const struct ip_conntrack_counter *counter) -{ - return seq_printf(s, "packets=%llu bytes=%llu ", - (unsigned long long)counter->packets, - (unsigned long long)counter->bytes); -} -#else -#define seq_print_counters(x, y) 0 -#endif - struct ct_iter_state { unsigned int bucket; }; @@ -146,7 +134,7 @@ static int ct_seq_show(struct seq_file *s, void *v) l3proto, l4proto)) return -ENOSPC; - if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL])) + if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL)) return -ENOSPC; if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status))) @@ -157,7 +145,7 @@ static int ct_seq_show(struct seq_file *s, void *v) l3proto, l4proto)) return -ENOSPC; - if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY])) + if (seq_print_acct(s, ct, IP_CT_DIR_REPLY)) return -ENOSPC; if (test_bit(IPS_ASSURED_BIT, &ct->status)) diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c index 69d699f95f4..01489681fa9 100644 --- a/net/netfilter/nf_sockopt.c +++ b/net/netfilter/nf_sockopt.c @@ -65,7 +65,7 @@ static struct nf_sockopt_ops *nf_sockopt_find(struct sock *sk, int pf, { struct nf_sockopt_ops *ops; - if (sock_net(sk) != &init_net) + if (!net_eq(sock_net(sk), &init_net)) return ERR_PTR(-ENOPROTOOPT); if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0) diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index b8173af8c24..9a35b57ab76 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -453,6 +453,14 @@ __build_packet_message(struct nfulnl_instance *inst, } } + if (indev && skb_mac_header_was_set(skb)) { + NLA_PUT_BE16(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)); + NLA_PUT_BE16(inst->skb, NFULA_HWLEN, + htons(skb->dev->hard_header_len)); + NLA_PUT(inst->skb, NFULA_HWHEADER, skb->dev->hard_header_len, + skb_mac_header(skb)); + } + if (skb->tstamp.tv64) { struct nfulnl_msg_packet_timestamp ts; struct timeval tv = ktime_to_timeval(skb->tstamp); diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index 3447025ce06..8c860112ce0 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -243,7 +243,6 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue, switch ((enum nfqnl_config_mode)queue->copy_mode) { case NFQNL_COPY_META: case NFQNL_COPY_NONE: - data_len = 0; break; case NFQNL_COPY_PACKET: @@ -556,7 +555,7 @@ nfqnl_rcv_dev_event(struct notifier_block *this, { struct net_device *dev = ptr; - if (dev_net(dev) != &init_net) + if (!net_eq(dev_net(dev), &init_net)) return NOTIFY_DONE; /* Drop any packets associated with the downed device */ diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c index 211189eb2b6..76ca1f2421e 100644 --- a/net/netfilter/xt_CONNSECMARK.c +++ b/net/netfilter/xt_CONNSECMARK.c @@ -8,7 +8,7 @@ * Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com> * by Henrik Nordstrom <hno@marasystems.com> * - * (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com> + * (C) 2006,2008 Red Hat, Inc., James Morris <jmorris@redhat.com> * * 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 @@ -94,6 +94,12 @@ connsecmark_tg_check(const char *tablename, const void *entry, { const struct xt_connsecmark_target_info *info = targinfo; + if (strcmp(tablename, "mangle") && strcmp(tablename, "security")) { + printk(KERN_INFO PFX "target only valid in the \'mangle\' " + "or \'security\' tables, not \'%s\'.\n", tablename); + return false; + } + switch (info->mode) { case CONNSECMARK_SAVE: case CONNSECMARK_RESTORE: @@ -126,7 +132,6 @@ static struct xt_target connsecmark_tg_reg[] __read_mostly = { .destroy = connsecmark_tg_destroy, .target = connsecmark_tg, .targetsize = sizeof(struct xt_connsecmark_target_info), - .table = "mangle", .me = THIS_MODULE, }, { @@ -136,7 +141,6 @@ static struct xt_target connsecmark_tg_reg[] __read_mostly = { .destroy = connsecmark_tg_destroy, .target = connsecmark_tg, .targetsize = sizeof(struct xt_connsecmark_target_info), - .table = "mangle", .me = THIS_MODULE, }, }; diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c index c0284856ccd..94f87ee7552 100644 --- a/net/netfilter/xt_SECMARK.c +++ b/net/netfilter/xt_SECMARK.c @@ -5,7 +5,7 @@ * Based on the nfmark match by: * (C) 1999-2001 Marc Boucher <marc@mbsi.ca> * - * (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com> + * (C) 2006,2008 Red Hat, Inc., James Morris <jmorris@redhat.com> * * 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 @@ -89,6 +89,12 @@ secmark_tg_check(const char *tablename, const void *entry, { struct xt_secmark_target_info *info = targinfo; + if (strcmp(tablename, "mangle") && strcmp(tablename, "security")) { + printk(KERN_INFO PFX "target only valid in the \'mangle\' " + "or \'security\' tables, not \'%s\'.\n", tablename); + return false; + } + if (mode && mode != info->mode) { printk(KERN_INFO PFX "mode already set to %hu cannot mix with " "rules for mode %hu\n", mode, info->mode); @@ -127,7 +133,6 @@ static struct xt_target secmark_tg_reg[] __read_mostly = { .destroy = secmark_tg_destroy, .target = secmark_tg, .targetsize = sizeof(struct xt_secmark_target_info), - .table = "mangle", .me = THIS_MODULE, }, { @@ -137,7 +142,6 @@ static struct xt_target secmark_tg_reg[] __read_mostly = { .destroy = secmark_tg_destroy, .target = secmark_tg, .targetsize = sizeof(struct xt_secmark_target_info), - .table = "mangle", .me = THIS_MODULE, }, }; diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c index 217e2b68632..beb5094703c 100644 --- a/net/netfilter/xt_TCPMSS.c +++ b/net/netfilter/xt_TCPMSS.c @@ -147,17 +147,21 @@ tcpmss_mangle_packet(struct sk_buff *skb, return TCPOLEN_MSS; } -static u_int32_t tcpmss_reverse_mtu4(const struct iphdr *iph) +static u_int32_t tcpmss_reverse_mtu(const struct sk_buff *skb, + unsigned int family) { - struct flowi fl = { - .fl4_dst = iph->saddr, - }; + struct flowi fl = {}; const struct nf_afinfo *ai; struct rtable *rt = NULL; u_int32_t mtu = ~0U; + if (family == PF_INET) + fl.fl4_dst = ip_hdr(skb)->saddr; + else + fl.fl6_dst = ipv6_hdr(skb)->saddr; + rcu_read_lock(); - ai = nf_get_afinfo(AF_INET); + ai = nf_get_afinfo(family); if (ai != NULL) ai->route((struct dst_entry **)&rt, &fl); rcu_read_unlock(); @@ -178,7 +182,8 @@ tcpmss_tg4(struct sk_buff *skb, const struct net_device *in, __be16 newlen; int ret; - ret = tcpmss_mangle_packet(skb, targinfo, tcpmss_reverse_mtu4(iph), + ret = tcpmss_mangle_packet(skb, targinfo, + tcpmss_reverse_mtu(skb, PF_INET), iph->ihl * 4, sizeof(*iph) + sizeof(struct tcphdr)); if (ret < 0) @@ -193,28 +198,6 @@ tcpmss_tg4(struct sk_buff *skb, const struct net_device *in, } #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) -static u_int32_t tcpmss_reverse_mtu6(const struct ipv6hdr *iph) -{ - struct flowi fl = { - .fl6_dst = iph->saddr, - }; - const struct nf_afinfo *ai; - struct rtable *rt = NULL; - u_int32_t mtu = ~0U; - - rcu_read_lock(); - ai = nf_get_afinfo(AF_INET6); - if (ai != NULL) - ai->route((struct dst_entry **)&rt, &fl); - rcu_read_unlock(); - - if (rt != NULL) { - mtu = dst_mtu(&rt->u.dst); - dst_release(&rt->u.dst); - } - return mtu; -} - static unsigned int tcpmss_tg6(struct sk_buff *skb, const struct net_device *in, const struct net_device *out, unsigned int hooknum, @@ -229,7 +212,8 @@ tcpmss_tg6(struct sk_buff *skb, const struct net_device *in, tcphoff = ipv6_skip_exthdr(skb, sizeof(*ipv6h), &nexthdr); if (tcphoff < 0) return NF_DROP; - ret = tcpmss_mangle_packet(skb, targinfo, tcpmss_reverse_mtu6(ipv6h), + ret = tcpmss_mangle_packet(skb, targinfo, + tcpmss_reverse_mtu(skb, PF_INET6), tcphoff, sizeof(*ipv6h) + sizeof(struct tcphdr)); if (ret < 0) diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c index d7e8983cd37..3e39c4fe193 100644 --- a/net/netfilter/xt_connbytes.c +++ b/net/netfilter/xt_connbytes.c @@ -8,6 +8,7 @@ #include <linux/netfilter/x_tables.h> #include <linux/netfilter/xt_connbytes.h> #include <net/netfilter/nf_conntrack.h> +#include <net/netfilter/nf_conntrack_acct.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); @@ -27,12 +28,15 @@ connbytes_mt(const struct sk_buff *skb, const struct net_device *in, u_int64_t what = 0; /* initialize to make gcc happy */ u_int64_t bytes = 0; u_int64_t pkts = 0; - const struct ip_conntrack_counter *counters; + const struct nf_conn_counter *counters; ct = nf_ct_get(skb, &ctinfo); if (!ct) return false; - counters = ct->counters; + + counters = nf_conn_acct_find(ct); + if (!counters) + return false; switch (sinfo->what) { case XT_CONNBYTES_PKTS: diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c index 72f694d947f..4903182a062 100644 --- a/net/netfilter/xt_string.c +++ b/net/netfilter/xt_string.c @@ -29,12 +29,16 @@ string_mt(const struct sk_buff *skb, const struct net_device *in, { const struct xt_string_info *conf = matchinfo; struct ts_state state; + int invert; memset(&state, 0, sizeof(struct ts_state)); + invert = (match->revision == 0 ? conf->u.v0.invert : + conf->u.v1.flags & XT_STRING_FLAG_INVERT); + return (skb_find_text((struct sk_buff *)skb, conf->from_offset, conf->to_offset, conf->config, &state) - != UINT_MAX) ^ conf->invert; + != UINT_MAX) ^ invert; } #define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m)) @@ -46,6 +50,7 @@ string_mt_check(const char *tablename, const void *ip, { struct xt_string_info *conf = matchinfo; struct ts_config *ts_conf; + int flags = TS_AUTOLOAD; /* Damn, can't handle this case properly with iptables... */ if (conf->from_offset > conf->to_offset) @@ -54,8 +59,15 @@ string_mt_check(const char *tablename, const void *ip, return false; if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE) return false; + if (match->revision == 1) { + if (conf->u.v1.flags & + ~(XT_STRING_FLAG_IGNORECASE | XT_STRING_FLAG_INVERT)) + return false; + if (conf->u.v1.flags & XT_STRING_FLAG_IGNORECASE) + flags |= TS_IGNORECASE; + } ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen, - GFP_KERNEL, TS_AUTOLOAD); + GFP_KERNEL, flags); if (IS_ERR(ts_conf)) return false; @@ -72,6 +84,17 @@ static void string_mt_destroy(const struct xt_match *match, void *matchinfo) static struct xt_match string_mt_reg[] __read_mostly = { { .name = "string", + .revision = 0, + .family = AF_INET, + .checkentry = string_mt_check, + .match = string_mt, + .destroy = string_mt_destroy, + .matchsize = sizeof(struct xt_string_info), + .me = THIS_MODULE + }, + { + .name = "string", + .revision = 1, .family = AF_INET, .checkentry = string_mt_check, .match = string_mt, @@ -81,6 +104,17 @@ static struct xt_match string_mt_reg[] __read_mostly = { }, { .name = "string", + .revision = 0, + .family = AF_INET6, + .checkentry = string_mt_check, + .match = string_mt, + .destroy = string_mt_destroy, + .matchsize = sizeof(struct xt_string_info), + .me = THIS_MODULE + }, + { + .name = "string", + .revision = 1, .family = AF_INET6, .checkentry = string_mt_check, .match = string_mt, diff --git a/net/netfilter/xt_time.c b/net/netfilter/xt_time.c index ed76baab473..9f328593287 100644 --- a/net/netfilter/xt_time.c +++ b/net/netfilter/xt_time.c @@ -173,7 +173,7 @@ time_mt(const struct sk_buff *skb, const struct net_device *in, __net_timestamp((struct sk_buff *)skb); stamp = ktime_to_ns(skb->tstamp); - do_div(stamp, NSEC_PER_SEC); + stamp = div_s64(stamp, NSEC_PER_SEC); if (info->flags & XT_TIME_LOCAL_TZ) /* Adjust for local timezone */ |