diff options
Diffstat (limited to 'net/netfilter')
58 files changed, 1032 insertions, 773 deletions
diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 722d1b057f61..0c6540780cb4 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -289,12 +289,6 @@ nf_hook_entry_head(struct net *net, int pf, unsigned int hooknum, if (WARN_ON_ONCE(ARRAY_SIZE(net->nf.hooks_ipv6) <= hooknum)) return NULL; return net->nf.hooks_ipv6 + hooknum; -#if IS_ENABLED(CONFIG_DECNET) - case NFPROTO_DECNET: - if (WARN_ON_ONCE(ARRAY_SIZE(net->nf.hooks_decnet) <= hooknum)) - return NULL; - return net->nf.hooks_decnet + hooknum; -#endif default: WARN_ON_ONCE(1); return NULL; @@ -646,10 +640,6 @@ static int __net_init netfilter_net_init(struct net *net) #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE __netfilter_net_init(net->nf.hooks_bridge, ARRAY_SIZE(net->nf.hooks_bridge)); #endif -#if IS_ENABLED(CONFIG_DECNET) - __netfilter_net_init(net->nf.hooks_decnet, ARRAY_SIZE(net->nf.hooks_decnet)); -#endif - #ifdef CONFIG_PROC_FS net->nf.proc_netfilter = proc_net_mkdir(net, "netfilter", net->proc_net); diff --git a/net/netfilter/ipset/ip_set_bitmap_ip.c b/net/netfilter/ipset/ip_set_bitmap_ip.c index e3257077158f..1b9df64c6236 100644 --- a/net/netfilter/ipset/ip_set_bitmap_ip.c +++ b/net/netfilter/ipset/ip_set_bitmap_ip.c @@ -299,8 +299,8 @@ bitmap_ip_create(struct net *net, struct ip_set *set, struct nlattr *tb[], return -IPSET_ERR_BITMAP_RANGE; pr_debug("mask_bits %u, netmask %u\n", mask_bits, netmask); - hosts = 2 << (32 - netmask - 1); - elements = 2 << (netmask - mask_bits - 1); + hosts = 2U << (32 - netmask - 1); + elements = 2UL << (netmask - mask_bits - 1); } if (elements > IPSET_BITMAP_MAX_RANGE + 1) return -IPSET_ERR_BITMAP_RANGE_SIZE; diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c index 0427e66bc478..031bb83aed70 100644 --- a/net/netfilter/ipset/ip_set_core.c +++ b/net/netfilter/ipset/ip_set_core.c @@ -64,6 +64,8 @@ MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_IPSET); ip_set_dereference((inst)->ip_set_list)[id] #define ip_set_ref_netlink(inst,id) \ rcu_dereference_raw((inst)->ip_set_list)[id] +#define ip_set_dereference_nfnl(p) \ + rcu_dereference_check(p, lockdep_nfnl_is_held(NFNL_SUBSYS_IPSET)) /* The set types are implemented in modules and registered set types * can be found in ip_set_type_list. Adding/deleting types is @@ -552,15 +554,10 @@ __ip_set_put_netlink(struct ip_set *set) static inline struct ip_set * ip_set_rcu_get(struct net *net, ip_set_id_t index) { - struct ip_set *set; struct ip_set_net *inst = ip_set_pernet(net); - rcu_read_lock(); - /* ip_set_list itself needs to be protected */ - set = rcu_dereference(inst->ip_set_list)[index]; - rcu_read_unlock(); - - return set; + /* ip_set_list and the set pointer need to be protected */ + return ip_set_dereference_nfnl(inst->ip_set_list)[index]; } int @@ -791,20 +788,9 @@ static struct nlmsghdr * start_msg(struct sk_buff *skb, u32 portid, u32 seq, unsigned int flags, enum ipset_cmd cmd) { - struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; - - nlh = nlmsg_put(skb, portid, seq, nfnl_msg_type(NFNL_SUBSYS_IPSET, cmd), - sizeof(*nfmsg), flags); - if (!nlh) - return NULL; - - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = NFPROTO_IPV4; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - - return nlh; + return nfnl_msg_put(skb, portid, seq, + nfnl_msg_type(NFNL_SUBSYS_IPSET, cmd), flags, + NFPROTO_IPV4, NFNETLINK_V0, 0); } /* Create a set */ @@ -1238,6 +1224,9 @@ static int ip_set_swap(struct net *net, struct sock *ctnl, struct sk_buff *skb, ip_set(inst, to_id) = from; write_unlock_bh(&ip_set_ref_lock); + /* Make sure all readers of the old set pointers are completed. */ + synchronize_rcu(); + return 0; } diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c index 613e18e720a4..9290a4d7b862 100644 --- a/net/netfilter/ipset/ip_set_hash_netportnet.c +++ b/net/netfilter/ipset/ip_set_hash_netportnet.c @@ -39,6 +39,7 @@ MODULE_ALIAS("ip_set_hash:net,port,net"); #define IP_SET_HASH_WITH_PROTO #define IP_SET_HASH_WITH_NETS #define IPSET_NET_COUNT 2 +#define IP_SET_HASH_WITH_NET0 /* IPv4 variant */ diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 3bf8d7f3cdc3..0909f32eabfd 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1656,6 +1656,7 @@ static int ip_vs_zero_all(struct netns_ipvs *ipvs) #ifdef CONFIG_SYSCTL static int zero; +static int one = 1; static int three = 3; static int @@ -1667,12 +1668,18 @@ proc_do_defense_mode(struct ctl_table *table, int write, int val = *valp; int rc; - rc = proc_dointvec(table, write, buffer, lenp, ppos); + struct ctl_table tmp = { + .data = &val, + .maxlen = sizeof(int), + .mode = table->mode, + }; + + rc = proc_dointvec(&tmp, write, buffer, lenp, ppos); if (write && (*valp != val)) { - if ((*valp < 0) || (*valp > 3)) { - /* Restore the correct value */ - *valp = val; + if (val < 0 || val > 3) { + rc = -EINVAL; } else { + *valp = val; update_defense_level(ipvs); } } @@ -1683,37 +1690,27 @@ static int proc_do_sync_threshold(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { + struct netns_ipvs *ipvs = table->extra2; int *valp = table->data; int val[2]; int rc; + struct ctl_table tmp = { + .data = &val, + .maxlen = table->maxlen, + .mode = table->mode, + }; - /* backup the value first */ + mutex_lock(&ipvs->sync_mutex); memcpy(val, valp, sizeof(val)); - - rc = proc_dointvec(table, write, buffer, lenp, ppos); - if (write && (valp[0] < 0 || valp[1] < 0 || - (valp[0] >= valp[1] && valp[1]))) { - /* Restore the correct value */ - memcpy(valp, val, sizeof(val)); - } - return rc; -} - -static int -proc_do_sync_mode(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - int *valp = table->data; - int val = *valp; - int rc; - - rc = proc_dointvec(table, write, buffer, lenp, ppos); - if (write && (*valp != val)) { - if ((*valp < 0) || (*valp > 1)) { - /* Restore the correct value */ - *valp = val; - } + rc = proc_dointvec(&tmp, write, buffer, lenp, ppos); + if (write) { + if (val[0] < 0 || val[1] < 0 || + (val[0] >= val[1] && val[1])) + rc = -EINVAL; + else + memcpy(valp, val, sizeof(val)); } + mutex_unlock(&ipvs->sync_mutex); return rc; } @@ -1725,12 +1722,18 @@ proc_do_sync_ports(struct ctl_table *table, int write, int val = *valp; int rc; - rc = proc_dointvec(table, write, buffer, lenp, ppos); + struct ctl_table tmp = { + .data = &val, + .maxlen = sizeof(int), + .mode = table->mode, + }; + + rc = proc_dointvec(&tmp, write, buffer, lenp, ppos); if (write && (*valp != val)) { - if (*valp < 1 || !is_power_of_2(*valp)) { - /* Restore the correct value */ + if (val < 1 || !is_power_of_2(val)) + rc = -EINVAL; + else *valp = val; - } } return rc; } @@ -1790,7 +1793,9 @@ static struct ctl_table vs_vars[] = { .procname = "sync_version", .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_do_sync_mode, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &one, }, { .procname = "sync_ports", @@ -3942,6 +3947,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct netns_ipvs *ipvs) ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; tbl[idx].data = &ipvs->sysctl_sync_threshold; + tbl[idx].extra2 = ipvs; tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD; tbl[idx++].data = &ipvs->sysctl_sync_refresh_period; diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c index f6af13c16cf5..c133ce825c2d 100644 --- a/net/netfilter/ipvs/ip_vs_sync.c +++ b/net/netfilter/ipvs/ip_vs_sync.c @@ -1444,7 +1444,7 @@ static int bind_mcastif_addr(struct socket *sock, struct net_device *dev) sin.sin_addr.s_addr = addr; sin.sin_port = 0; - return sock->ops->bind(sock, (struct sockaddr*)&sin, sizeof(sin)); + return kernel_bind(sock, (struct sockaddr *)&sin, sizeof(sin)); } static void get_mcast_sockaddr(union ipvs_sockaddr *sa, int *salen, @@ -1510,8 +1510,8 @@ static int make_send_sock(struct netns_ipvs *ipvs, int id, } get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->mcfg, id); - result = sock->ops->connect(sock, (struct sockaddr *) &mcast_addr, - salen, 0); + result = kernel_connect(sock, (struct sockaddr *)&mcast_addr, + salen, 0); if (result < 0) { pr_err("Error connecting to the multicast addr\n"); goto error; @@ -1551,7 +1551,7 @@ static int make_receive_sock(struct netns_ipvs *ipvs, int id, get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->bcfg, id); sock->sk->sk_bound_dev_if = dev->ifindex; - result = sock->ops->bind(sock, (struct sockaddr *)&mcast_addr, salen); + result = kernel_bind(sock, (struct sockaddr *)&mcast_addr, salen); if (result < 0) { pr_err("Error binding to the multicast addr\n"); goto error; diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index 11f7c546e57b..e47d1a29c140 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -272,7 +272,7 @@ static inline bool decrement_ttl(struct netns_ipvs *ipvs, skb->dev = dst->dev; icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT, 0); - __IP6_INC_STATS(net, idev, IPSTATS_MIB_INHDRERRORS); + IP6_INC_STATS(net, idev, IPSTATS_MIB_INHDRERRORS); return false; } @@ -287,7 +287,7 @@ static inline bool decrement_ttl(struct netns_ipvs *ipvs, { if (ip_hdr(skb)->ttl <= 1) { /* Tell the sender its packet died... */ - __IP_INC_STATS(net, IPSTATS_MIB_INHDRERRORS); + IP_INC_STATS(net, IPSTATS_MIB_INHDRERRORS); icmp_send(skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0); return false; } diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c index efc14c7b4f8e..c2fece0593ea 100644 --- a/net/netfilter/nf_conntrack_ftp.c +++ b/net/netfilter/nf_conntrack_ftp.c @@ -383,7 +383,7 @@ static int help(struct sk_buff *skb, int ret; u32 seq; int dir = CTINFO2DIR(ctinfo); - unsigned int uninitialized_var(matchlen), uninitialized_var(matchoff); + unsigned int matchlen, matchoff; struct nf_ct_ftp_master *ct_ftp_info = nfct_help_data(ct); struct nf_conntrack_expect *exp; union nf_inet_addr *daddr; diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index e24b762ffa1d..06c70d4584cf 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -400,6 +400,9 @@ int nf_conntrack_helper_register(struct nf_conntrack_helper *me) BUG_ON(me->expect_class_max >= NF_CT_MAX_EXPECT_CLASSES); BUG_ON(strlen(me->name) > NF_CT_HELPER_NAME_LEN - 1); + if (!nf_ct_helper_hash) + return -ENOENT; + if (me->expect_policy->max_expected > NF_CT_EXPECT_MAX_CNT) return -EINVAL; @@ -570,4 +573,5 @@ void nf_conntrack_helper_fini(void) { nf_ct_extend_unregister(&helper_extend); kvfree(nf_ct_helper_hash); + nf_ct_helper_hash = NULL; } diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 2850a638401d..83e8566ec3f0 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -517,20 +517,15 @@ ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, { const struct nf_conntrack_zone *zone; struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; struct nlattr *nest_parms; unsigned int flags = portid ? NLM_F_MULTI : 0, event; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_NEW); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, nf_ct_l3num(ct), + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = nf_ct_l3num(ct); - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - zone = nf_ct_zone(ct); nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); @@ -687,7 +682,6 @@ ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) const struct nf_conntrack_zone *zone; struct net *net; struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; struct nlattr *nest_parms; struct nf_conn *ct = item->ct; struct sk_buff *skb; @@ -717,15 +711,11 @@ ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item) goto errout; type = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, type); - nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, item->portid, 0, type, flags, nf_ct_l3num(ct), + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = nf_ct_l3num(ct); - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - zone = nf_ct_zone(ct); nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED); @@ -1216,9 +1206,6 @@ static const struct nla_policy ct_nla_policy[CTA_MAX+1] = { static int ctnetlink_flush_iterate(struct nf_conn *ct, void *data) { - if (test_bit(IPS_OFFLOAD_BIT, &ct->status)) - return 0; - return ctnetlink_filter_match(ct, data); } @@ -1280,11 +1267,6 @@ static int ctnetlink_del_conntrack(struct net *net, struct sock *ctnl, ct = nf_ct_tuplehash_to_ctrack(h); - if (test_bit(IPS_OFFLOAD_BIT, &ct->status)) { - nf_ct_put(ct); - return -EBUSY; - } - if (cda[CTA_ID]) { __be32 id = nla_get_be32(cda[CTA_ID]); @@ -2056,12 +2038,15 @@ ctnetlink_create_conntrack(struct net *net, err = nf_conntrack_hash_check_insert(ct); if (err < 0) - goto err2; + goto err3; rcu_read_unlock(); return ct; +err3: + if (ct->master) + nf_ct_put(ct->master); err2: rcu_read_unlock(); err1: @@ -2175,20 +2160,15 @@ ctnetlink_ct_stat_cpu_fill_info(struct sk_buff *skb, u32 portid, u32 seq, __u16 cpu, const struct ip_conntrack_stat *st) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0, event; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_GET_STATS_CPU); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, htons(cpu)); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(cpu); - if (nla_put_be32(skb, CTA_STATS_FOUND, htonl(st->found)) || nla_put_be32(skb, CTA_STATS_INVALID, htonl(st->invalid)) || nla_put_be32(skb, CTA_STATS_IGNORE, htonl(st->ignore)) || @@ -2259,20 +2239,15 @@ ctnetlink_stat_ct_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, struct net *net) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0, event; unsigned int nr_conntracks = atomic_read(&net->ct.count); event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_GET_STATS); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_be32(skb, CTA_STATS_GLOBAL_ENTRIES, htonl(nr_conntracks))) goto nla_put_failure; @@ -2686,7 +2661,9 @@ nla_put_failure: return -1; } +#if IS_ENABLED(CONFIG_NF_NAT) static const union nf_inet_addr any_addr; +#endif static __be32 nf_expect_get_id(const struct nf_conntrack_expect *exp) { @@ -2783,19 +2760,14 @@ ctnetlink_exp_fill_info(struct sk_buff *skb, u32 portid, u32 seq, int event, const struct nf_conntrack_expect *exp) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_EXP, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, + exp->tuple.src.l3num, NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = exp->tuple.src.l3num; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (ctnetlink_exp_dump_expect(skb, exp) < 0) goto nla_put_failure; @@ -2815,7 +2787,6 @@ ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) struct nf_conntrack_expect *exp = item->exp; struct net *net = nf_ct_exp_net(exp); struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; struct sk_buff *skb; unsigned int type, group; int flags = 0; @@ -2838,15 +2809,11 @@ ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item) goto errout; type = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_EXP, type); - nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, item->portid, 0, type, flags, + exp->tuple.src.l3num, NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = exp->tuple.src.l3num; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (ctnetlink_exp_dump_expect(skb, exp) < 0) goto nla_put_failure; @@ -3186,10 +3153,12 @@ ctnetlink_change_expect(struct nf_conntrack_expect *x, return 0; } +#if IS_ENABLED(CONFIG_NF_NAT) static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = { [CTA_EXPECT_NAT_DIR] = { .type = NLA_U32 }, [CTA_EXPECT_NAT_TUPLE] = { .type = NLA_NESTED }, }; +#endif static int ctnetlink_parse_expect_nat(const struct nlattr *attr, @@ -3414,20 +3383,15 @@ ctnetlink_exp_stat_fill_info(struct sk_buff *skb, u32 portid, u32 seq, int cpu, const struct ip_conntrack_stat *st) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0, event; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_EXP_GET_STATS_CPU); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, htons(cpu)); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(cpu); - if (nla_put_be32(skb, CTA_STATS_EXP_NEW, htonl(st->expect_new)) || nla_put_be32(skb, CTA_STATS_EXP_CREATE, htonl(st->expect_create)) || nla_put_be32(skb, CTA_STATS_EXP_DELETE, htonl(st->expect_delete))) diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 8cb62805fd68..8453e92936ac 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -58,8 +58,8 @@ static const unsigned int sctp_timeouts[SCTP_CONNTRACK_MAX] = { [SCTP_CONNTRACK_COOKIE_WAIT] = 3 SECS, [SCTP_CONNTRACK_COOKIE_ECHOED] = 3 SECS, [SCTP_CONNTRACK_ESTABLISHED] = 5 DAYS, - [SCTP_CONNTRACK_SHUTDOWN_SENT] = 300 SECS / 1000, - [SCTP_CONNTRACK_SHUTDOWN_RECD] = 300 SECS / 1000, + [SCTP_CONNTRACK_SHUTDOWN_SENT] = 3 SECS, + [SCTP_CONNTRACK_SHUTDOWN_RECD] = 3 SECS, [SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = 3 SECS, [SCTP_CONNTRACK_HEARTBEAT_SENT] = 30 SECS, [SCTP_CONNTRACK_HEARTBEAT_ACKED] = 210 SECS, @@ -119,7 +119,7 @@ static const u8 sctp_conntracks[2][11][SCTP_CONNTRACK_MAX] = { { /* ORIGINAL */ /* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA */ -/* init */ {sCW, sCW, sCW, sCE, sES, sSS, sSR, sSA, sCW, sHA}, +/* init */ {sCW, sCW, sCW, sCE, sES, sCL, sCL, sSA, sCW, sHA}, /* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA}, /* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL}, /* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL, sSS}, @@ -317,22 +317,29 @@ static int sctp_packet(struct nf_conn *ct, for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { /* Special cases of Verification tag check (Sec 8.5.1) */ if (sch->type == SCTP_CID_INIT) { - /* Sec 8.5.1 (A) */ + /* (A) vtag MUST be zero */ if (sh->vtag != 0) goto out_unlock; } else if (sch->type == SCTP_CID_ABORT) { - /* Sec 8.5.1 (B) */ - if (sh->vtag != ct->proto.sctp.vtag[dir] && - sh->vtag != ct->proto.sctp.vtag[!dir]) + /* (B) vtag MUST match own vtag if T flag is unset OR + * MUST match peer's vtag if T flag is set + */ + if ((!(sch->flags & SCTP_CHUNK_FLAG_T) && + sh->vtag != ct->proto.sctp.vtag[dir]) || + ((sch->flags & SCTP_CHUNK_FLAG_T) && + sh->vtag != ct->proto.sctp.vtag[!dir])) goto out_unlock; } else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) { - /* Sec 8.5.1 (C) */ - if (sh->vtag != ct->proto.sctp.vtag[dir] && - sh->vtag != ct->proto.sctp.vtag[!dir] && - sch->flags & SCTP_CHUNK_FLAG_T) + /* (C) vtag MUST match own vtag if T flag is unset OR + * MUST match peer's vtag if T flag is set + */ + if ((!(sch->flags & SCTP_CHUNK_FLAG_T) && + sh->vtag != ct->proto.sctp.vtag[dir]) || + ((sch->flags & SCTP_CHUNK_FLAG_T) && + sh->vtag != ct->proto.sctp.vtag[!dir])) goto out_unlock; } else if (sch->type == SCTP_CID_COOKIE_ECHO) { - /* Sec 8.5.1 (D) */ + /* (D) vtag must be same as init_vtag as found in INIT_ACK */ if (sh->vtag != ct->proto.sctp.vtag[dir]) goto out_unlock; } else if (sch->type == SCTP_CID_HEARTBEAT) { diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 66cda5e2d6b9..955b73a9a05e 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -1094,6 +1094,16 @@ static int tcp_packet(struct nf_conn *ct, nf_ct_kill_acct(ct, ctinfo, skb); return NF_ACCEPT; } + + if (index == TCP_SYN_SET && old_state == TCP_CONNTRACK_SYN_SENT) { + /* do not renew timeout on SYN retransmit. + * + * Else port reuse by client or NAT middlebox can keep + * entry alive indefinitely (including nat info). + */ + return NF_ACCEPT; + } + /* ESTABLISHED without SEEN_REPLY, i.e. mid-connection * pickup with loose=1. Avoid large ESTABLISHED timeout. */ diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c index 046f118dea06..d16aa43ebd4d 100644 --- a/net/netfilter/nf_conntrack_sip.c +++ b/net/netfilter/nf_conntrack_sip.c @@ -605,7 +605,7 @@ int ct_sip_parse_numerical_param(const struct nf_conn *ct, const char *dptr, start += strlen(name); *val = simple_strtoul(start, &end, 0); if (start == end) - return 0; + return -1; if (matchoff && matchlen) { *matchoff = start - dptr; *matchlen = end - start; diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c index 84c59de27882..b3a0385290a1 100644 --- a/net/netfilter/nf_queue.c +++ b/net/netfilter/nf_queue.c @@ -93,8 +93,6 @@ bool nf_queue_entry_get_refs(struct nf_queue_entry *entry) dev_hold(state->in); if (state->out) dev_hold(state->out); - if (state->sk) - sock_hold(state->sk); #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) if (entry->skb->nf_bridge) { struct net_device *physdev; diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 079f76849693..e0c224dea316 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -22,10 +22,13 @@ #include <net/netfilter/nf_tables_core.h> #include <net/netfilter/nf_tables.h> #include <net/net_namespace.h> +#include <net/netns/generic.h> #include <net/sock.h> #define NFT_MODULE_AUTOLOAD_LIMIT (MODULE_NAME_LEN - sizeof("nft-expr-255-")) +unsigned int nf_tables_net_id __read_mostly; + static LIST_HEAD(nf_tables_expressions); static LIST_HEAD(nf_tables_objects); static LIST_HEAD(nf_tables_flowtables); @@ -53,7 +56,9 @@ static const struct rhashtable_params nft_chain_ht_params = { static void nft_validate_state_update(struct net *net, u8 new_validate_state) { - switch (net->nft.validate_state) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + + switch (nft_net->validate_state) { case NFT_VALIDATE_SKIP: WARN_ON_ONCE(new_validate_state == NFT_VALIDATE_DO); break; @@ -64,7 +69,7 @@ static void nft_validate_state_update(struct net *net, u8 new_validate_state) return; } - net->nft.validate_state = new_validate_state; + nft_net->validate_state = new_validate_state; } static void nft_ctx_init(struct nft_ctx *ctx, @@ -97,6 +102,7 @@ static struct nft_trans *nft_trans_alloc_gfp(const struct nft_ctx *ctx, return NULL; INIT_LIST_HEAD(&trans->list); + INIT_LIST_HEAD(&trans->binding_list); trans->msg_type = msg_type; trans->ctx = *ctx; @@ -109,34 +115,68 @@ static struct nft_trans *nft_trans_alloc(const struct nft_ctx *ctx, return nft_trans_alloc_gfp(ctx, msg_type, size, GFP_KERNEL); } -static void nft_trans_destroy(struct nft_trans *trans) +static void nft_trans_list_del(struct nft_trans *trans) { list_del(&trans->list); + list_del(&trans->binding_list); +} + +static void nft_trans_destroy(struct nft_trans *trans) +{ + nft_trans_list_del(trans); kfree(trans); } -static void nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set) +static void __nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set, + bool bind) { + struct nftables_pernet *nft_net; struct net *net = ctx->net; struct nft_trans *trans; if (!nft_set_is_anonymous(set)) return; - list_for_each_entry_reverse(trans, &net->nft.commit_list, list) { + nft_net = net_generic(net, nf_tables_net_id); + list_for_each_entry_reverse(trans, &nft_net->commit_list, list) { switch (trans->msg_type) { case NFT_MSG_NEWSET: if (nft_trans_set(trans) == set) - nft_trans_set_bound(trans) = true; + nft_trans_set_bound(trans) = bind; break; case NFT_MSG_NEWSETELEM: if (nft_trans_elem_set(trans) == set) - nft_trans_elem_set_bound(trans) = true; + nft_trans_elem_set_bound(trans) = bind; break; } } } +static void nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set) +{ + return __nft_set_trans_bind(ctx, set, true); +} + +static void nft_set_trans_unbind(const struct nft_ctx *ctx, struct nft_set *set) +{ + return __nft_set_trans_bind(ctx, set, false); +} + +static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *trans) +{ + struct nftables_pernet *nft_net; + + nft_net = net_generic(net, nf_tables_net_id); + switch (trans->msg_type) { + case NFT_MSG_NEWSET: + if (nft_set_is_anonymous(nft_trans_set(trans))) + list_add_tail(&trans->binding_list, &nft_net->binding_list); + break; + } + + list_add_tail(&trans->list, &nft_net->commit_list); +} + static int nf_tables_register_hook(struct net *net, const struct nft_table *table, struct nft_chain *chain) @@ -187,7 +227,7 @@ static int nft_trans_table_add(struct nft_ctx *ctx, int msg_type) if (msg_type == NFT_MSG_NEWTABLE) nft_activate_next(ctx->net, ctx->table); - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; } @@ -214,7 +254,7 @@ static int nft_trans_chain_add(struct nft_ctx *ctx, int msg_type) if (msg_type == NFT_MSG_NEWCHAIN) nft_activate_next(ctx->net, ctx->chain); - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; } @@ -226,7 +266,7 @@ static int nft_delchain(struct nft_ctx *ctx) if (err < 0) return err; - ctx->table->use--; + nft_use_dec(&ctx->table->use); nft_deactivate_next(ctx->net, ctx->chain); return err; @@ -267,7 +307,7 @@ nf_tables_delrule_deactivate(struct nft_ctx *ctx, struct nft_rule *rule) /* You cannot delete the same rule twice */ if (nft_is_active_next(ctx->net, rule)) { nft_deactivate_next(ctx->net, rule); - ctx->chain->use--; + nft_use_dec(&ctx->chain->use); return 0; } return -ENOENT; @@ -287,7 +327,7 @@ static struct nft_trans *nft_trans_rule_add(struct nft_ctx *ctx, int msg_type, ntohl(nla_get_be32(ctx->nla[NFTA_RULE_ID])); } nft_trans_rule(trans) = rule; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return trans; } @@ -342,7 +382,7 @@ static int nft_trans_set_add(const struct nft_ctx *ctx, int msg_type, nft_activate_next(ctx->net, set); } nft_trans_set(trans) = set; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; } @@ -356,7 +396,7 @@ static int nft_delset(const struct nft_ctx *ctx, struct nft_set *set) return err; nft_deactivate_next(ctx->net, set); - ctx->table->use--; + nft_use_dec(&ctx->table->use); return err; } @@ -374,7 +414,7 @@ static int nft_trans_obj_add(struct nft_ctx *ctx, int msg_type, nft_activate_next(ctx->net, obj); nft_trans_obj(trans) = obj; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; } @@ -388,7 +428,7 @@ static int nft_delobj(struct nft_ctx *ctx, struct nft_object *obj) return err; nft_deactivate_next(ctx->net, obj); - ctx->table->use--; + nft_use_dec(&ctx->table->use); return err; } @@ -407,7 +447,7 @@ static int nft_trans_flowtable_add(struct nft_ctx *ctx, int msg_type, nft_activate_next(ctx->net, flowtable); nft_trans_flowtable(trans) = flowtable; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; } @@ -422,7 +462,7 @@ static int nft_delflowtable(struct nft_ctx *ctx, return err; nft_deactivate_next(ctx->net, flowtable); - ctx->table->use--; + nft_use_dec(&ctx->table->use); return err; } @@ -435,12 +475,14 @@ static struct nft_table *nft_table_lookup(const struct net *net, const struct nlattr *nla, u8 family, u8 genmask) { + struct nftables_pernet *nft_net; struct nft_table *table; if (nla == NULL) return ERR_PTR(-EINVAL); - list_for_each_entry_rcu(table, &net->nft.tables, list) { + nft_net = net_generic(net, nf_tables_net_id); + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (!nla_strcmp(nla, table->name) && table->family == family && nft_active_genmask(table, genmask)) @@ -454,9 +496,11 @@ static struct nft_table *nft_table_lookup_byhandle(const struct net *net, const struct nlattr *nla, u8 genmask) { + struct nftables_pernet *nft_net; struct nft_table *table; - list_for_each_entry(table, &net->nft.tables, list) { + nft_net = net_generic(net, nf_tables_net_id); + list_for_each_entry(table, &nft_net->tables, list) { if (be64_to_cpu(nla_get_be64(nla)) == table->handle && nft_active_genmask(table, genmask)) return table; @@ -509,11 +553,13 @@ __nf_tables_chain_type_lookup(const struct nlattr *nla, u8 family) static void nft_request_module(struct net *net, const char *fmt, ...) { char module_name[MODULE_NAME_LEN]; + struct nftables_pernet *nft_net; LIST_HEAD(commit_list); va_list args; int ret; - list_splice_init(&net->nft.commit_list, &commit_list); + nft_net = net_generic(net, nf_tables_net_id); + list_splice_init(&nft_net->commit_list, &commit_list); va_start(args, fmt); ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args); @@ -521,12 +567,12 @@ static void nft_request_module(struct net *net, const char *fmt, ...) if (ret >= MODULE_NAME_LEN) return; - mutex_unlock(&net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); request_module("%s", module_name); - mutex_lock(&net->nft.commit_mutex); + mutex_lock(&nft_net->commit_mutex); - WARN_ON_ONCE(!list_empty(&net->nft.commit_list)); - list_splice(&commit_list, &net->nft.commit_list); + WARN_ON_ONCE(!list_empty(&nft_net->commit_list)); + list_splice(&commit_list, &nft_net->commit_list); } #endif @@ -561,6 +607,13 @@ nf_tables_chain_type_lookup(struct net *net, const struct nlattr *nla, return ERR_PTR(-ENOENT); } +static __be16 nft_base_seq(const struct net *net) +{ + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + + return htons(nft_net->base_seq & 0xffff); +} + static const struct nla_policy nft_table_policy[NFTA_TABLE_MAX + 1] = { [NFTA_TABLE_NAME] = { .type = NLA_STRING, .len = NFT_TABLE_MAXNAMELEN - 1 }, @@ -573,18 +626,13 @@ static int nf_tables_fill_table_info(struct sk_buff *skb, struct net *net, int family, const struct nft_table *table) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, family, + NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_TABLE_NAME, table->name) || nla_put_be32(skb, NFTA_TABLE_FLAGS, htonl(table->flags)) || nla_put_be32(skb, NFTA_TABLE_USE, htonl(table->use)) || @@ -631,15 +679,17 @@ static int nf_tables_dump_tables(struct sk_buff *skb, struct netlink_callback *cb) { const struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); + struct nftables_pernet *nft_net; const struct nft_table *table; unsigned int idx = 0, s_idx = cb->args[0]; struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (family != NFPROTO_UNSPEC && family != table->family) continue; @@ -743,7 +793,7 @@ static void nft_table_disable(struct net *net, struct nft_table *table, u32 cnt) if (cnt && i++ == cnt) break; - nf_unregister_net_hook(net, &nft_base_chain(chain)->ops); + nf_tables_unregister_hook(net, table, chain); } } @@ -758,7 +808,7 @@ static int nf_tables_table_enable(struct net *net, struct nft_table *table) if (!nft_is_base_chain(chain)) continue; - err = nf_register_net_hook(net, &nft_base_chain(chain)->ops); + err = nf_tables_register_hook(net, table, chain); if (err < 0) goto err; @@ -802,17 +852,18 @@ static int nf_tables_updtable(struct nft_ctx *ctx) nft_trans_table_enable(trans) = false; } else if (!(flags & NFT_TABLE_F_DORMANT) && ctx->table->flags & NFT_TABLE_F_DORMANT) { + ctx->table->flags &= ~NFT_TABLE_F_DORMANT; ret = nf_tables_table_enable(ctx->net, ctx->table); - if (ret >= 0) { - ctx->table->flags &= ~NFT_TABLE_F_DORMANT; + if (ret >= 0) nft_trans_table_enable(trans) = true; - } + else + ctx->table->flags |= NFT_TABLE_F_DORMANT; } if (ret < 0) goto err; nft_trans_table_update(trans) = true; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; err: nft_trans_destroy(trans); @@ -842,11 +893,36 @@ static int nft_chain_hash_cmp(struct rhashtable_compare_arg *arg, return strcmp(chain->name, name); } +static bool nft_supported_family(u8 family) +{ + return false +#ifdef CONFIG_NF_TABLES_INET + || family == NFPROTO_INET +#endif +#ifdef CONFIG_NF_TABLES_IPV4 + || family == NFPROTO_IPV4 +#endif +#ifdef CONFIG_NF_TABLES_ARP + || family == NFPROTO_ARP +#endif +#ifdef CONFIG_NF_TABLES_NETDEV + || family == NFPROTO_NETDEV +#endif +#if IS_ENABLED(CONFIG_NF_TABLES_BRIDGE) + || family == NFPROTO_BRIDGE +#endif +#ifdef CONFIG_NF_TABLES_IPV6 + || family == NFPROTO_IPV6 +#endif + ; +} + static int nf_tables_newtable(struct net *net, struct sock *nlsk, struct sk_buff *skb, const struct nlmsghdr *nlh, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -856,7 +932,10 @@ static int nf_tables_newtable(struct net *net, struct sock *nlsk, struct nft_ctx ctx; int err; - lockdep_assert_held(&net->nft.commit_mutex); + if (!nft_supported_family(family)) + return -EOPNOTSUPP; + + lockdep_assert_held(&nft_net->commit_mutex); attr = nla[NFTA_TABLE_NAME]; table = nft_table_lookup(net, attr, family, genmask); if (IS_ERR(table)) { @@ -906,7 +985,7 @@ static int nf_tables_newtable(struct net *net, struct sock *nlsk, if (err < 0) goto err_trans; - list_add_tail_rcu(&table->list, &net->nft.tables); + list_add_tail_rcu(&table->list, &nft_net->tables); return 0; err_trans: rhltable_destroy(&table->chains_ht); @@ -941,8 +1020,7 @@ static int nft_flush_table(struct nft_ctx *ctx) if (!nft_is_active_next(ctx->net, set)) continue; - if (nft_set_is_anonymous(set) && - !list_empty(&set->bindings)) + if (nft_set_is_anonymous(set)) continue; err = nft_delset(ctx, set); @@ -986,11 +1064,12 @@ out: static int nft_flush(struct nft_ctx *ctx, int family) { + struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); struct nft_table *table, *nt; const struct nlattr * const *nla = ctx->nla; int err = 0; - list_for_each_entry_safe(table, nt, &ctx->net->nft.tables, list) { + list_for_each_entry_safe(table, nt, &nft_net->tables, list) { if (family != AF_UNSPEC && table->family != family) continue; @@ -1104,7 +1183,9 @@ nft_chain_lookup_byhandle(const struct nft_table *table, u64 handle, u8 genmask) static bool lockdep_commit_lock_is_held(struct net *net) { #ifdef CONFIG_PROVE_LOCKING - return lockdep_is_held(&net->nft.commit_mutex); + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + + return lockdep_is_held(&nft_net->commit_mutex); #else return true; #endif @@ -1207,18 +1288,13 @@ static int nf_tables_fill_chain_info(struct sk_buff *skb, struct net *net, const struct nft_chain *chain) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, family, + NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_CHAIN_TABLE, table->name)) goto nla_put_failure; if (nla_put_be64(skb, NFTA_CHAIN_HANDLE, cpu_to_be64(chain->handle), @@ -1306,11 +1382,13 @@ static int nf_tables_dump_chains(struct sk_buff *skb, unsigned int idx = 0, s_idx = cb->args[0]; struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; + struct nftables_pernet *nft_net; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (family != NFPROTO_UNSPEC && family != table->family) continue; @@ -1503,12 +1581,13 @@ static int nft_chain_parse_hook(struct net *net, struct nft_chain_hook *hook, u8 family, bool autoload) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nlattr *ha[NFTA_HOOK_MAX + 1]; const struct nft_chain_type *type; struct net_device *dev; int err; - lockdep_assert_held(&net->nft.commit_mutex); + lockdep_assert_held(&nft_net->commit_mutex); lockdep_nfnl_nft_mutex_not_held(); err = nla_parse_nested(ha, NFTA_HOOK_MAX, nla[NFTA_CHAIN_HOOK], @@ -1607,9 +1686,6 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, struct nft_rule **rules; int err; - if (table->use == UINT_MAX) - return -EOVERFLOW; - if (nla[NFTA_CHAIN_HOOK]) { struct nft_chain_hook hook; struct nf_hook_ops *ops; @@ -1681,6 +1757,11 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, if (err < 0) goto err1; + if (!nft_use_inc(&table->use)) { + err = -EMFILE; + goto err_use; + } + err = rhltable_insert_key(&table->chains_ht, chain->name, &chain->rhlhead, nft_chain_ht_params); if (err) @@ -1693,11 +1774,12 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, goto err2; } - table->use++; list_add_tail_rcu(&chain->list, &table->chains); return 0; err2: + nft_use_dec_restore(&table->use); +err_use: nf_tables_unregister_hook(net, table, chain); err1: nf_tables_chain_destroy(ctx); @@ -1777,6 +1859,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy) if (nla[NFTA_CHAIN_HANDLE] && nla[NFTA_CHAIN_NAME]) { + struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); struct nft_trans *tmp; char *name; @@ -1786,7 +1869,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy) goto err; err = -EEXIST; - list_for_each_entry(tmp, &ctx->net->nft.commit_list, list) { + list_for_each_entry(tmp, &nft_net->commit_list, list) { if (tmp->msg_type == NFT_MSG_NEWCHAIN && tmp->ctx.table == table && nft_trans_chain_update(tmp) && @@ -1799,7 +1882,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy) nft_trans_chain_name(trans) = name; } - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; err: @@ -1813,6 +1896,7 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -1823,7 +1907,7 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, struct nft_ctx ctx; u64 handle = 0; - lockdep_assert_held(&net->nft.commit_mutex); + lockdep_assert_held(&nft_net->commit_mutex); table = nft_table_lookup(net, nla[NFTA_CHAIN_TABLE], family, genmask); if (IS_ERR(table)) { @@ -2251,21 +2335,16 @@ static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net, const struct nft_rule *rule) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; const struct nft_expr *expr, *next; struct nlattr *list; const struct nft_rule *prule; u16 type = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, type, flags, family, NFNETLINK_V0, + nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_RULE_TABLE, table->name)) goto nla_put_failure; if (nla_put_string(skb, NFTA_RULE_CHAIN, chain->name)) @@ -2351,11 +2430,13 @@ static int nf_tables_dump_rules(struct sk_buff *skb, unsigned int idx = 0, s_idx = cb->args[0]; struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; + struct nftables_pernet *nft_net; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (family != NFPROTO_UNSPEC && family != table->family) continue; @@ -2508,7 +2589,6 @@ static void nf_tables_rule_destroy(const struct nft_ctx *ctx, { struct nft_expr *expr, *next; - lockdep_assert_held(&ctx->net->nft.commit_mutex); /* * Careful: some expressions might not be initialized in case this * is called on error from nf_tables_newrule(). @@ -2574,6 +2654,8 @@ static int nft_table_validate(struct net *net, const struct nft_table *table) err = nft_chain_validate(&ctx, chain); if (err < 0) return err; + + cond_resched(); } return 0; @@ -2586,6 +2668,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); struct nft_expr_info *info = NULL; @@ -2602,7 +2685,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, int err, rem; u64 handle, pos_handle; - lockdep_assert_held(&net->nft.commit_mutex); + lockdep_assert_held(&nft_net->commit_mutex); table = nft_table_lookup(net, nla[NFTA_RULE_TABLE], family, genmask); if (IS_ERR(table)) { @@ -2638,9 +2721,6 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, return -EINVAL; handle = nf_tables_alloc_handle(table); - if (chain->use == UINT_MAX) - return -EOVERFLOW; - if (nla[NFTA_RULE_POSITION]) { pos_handle = be64_to_cpu(nla_get_be64(nla[NFTA_RULE_POSITION])); old_rule = __nft_rule_lookup(chain, pos_handle); @@ -2716,23 +2796,28 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, expr = nft_expr_next(expr); } + if (!nft_use_inc(&chain->use)) { + err = -EMFILE; + goto err2; + } + if (nlh->nlmsg_flags & NLM_F_REPLACE) { trans = nft_trans_rule_add(&ctx, NFT_MSG_NEWRULE, rule); if (trans == NULL) { err = -ENOMEM; - goto err2; + goto err_destroy_flow_rule; } err = nft_delrule(&ctx, old_rule); if (err < 0) { nft_trans_destroy(trans); - goto err2; + goto err_destroy_flow_rule; } list_add_tail_rcu(&rule->list, &old_rule->list); } else { if (nft_trans_rule_add(&ctx, NFT_MSG_NEWRULE, rule) == NULL) { err = -ENOMEM; - goto err2; + goto err_destroy_flow_rule; } if (nlh->nlmsg_flags & NLM_F_APPEND) { @@ -2748,14 +2833,17 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, } } kvfree(info); - chain->use++; - if (net->nft.validate_state == NFT_VALIDATE_DO) + if (nft_net->validate_state == NFT_VALIDATE_DO) return nft_table_validate(net, table); return 0; + +err_destroy_flow_rule: + nft_use_dec_restore(&chain->use); err2: - nf_tables_rule_release(&ctx, rule); + nft_rule_expr_deactivate(&ctx, rule, NFT_TRANS_PREPARE_ERROR); + nf_tables_rule_destroy(&ctx, rule); err1: for (i = 0; i < n; i++) { if (info[i].ops) { @@ -2769,15 +2857,18 @@ err1: } static struct nft_rule *nft_rule_lookup_byid(const struct net *net, + const struct nft_chain *chain, const struct nlattr *nla) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); u32 id = ntohl(nla_get_be32(nla)); struct nft_trans *trans; - list_for_each_entry(trans, &net->nft.commit_list, list) { + list_for_each_entry(trans, &nft_net->commit_list, list) { struct nft_rule *rule = nft_trans_rule(trans); if (trans->msg_type == NFT_MSG_NEWRULE && + trans->ctx.chain == chain && id == nft_trans_rule_id(trans)) return rule; } @@ -2824,7 +2915,7 @@ static int nf_tables_delrule(struct net *net, struct sock *nlsk, err = nft_delrule(&ctx, rule); } else if (nla[NFTA_RULE_ID]) { - rule = nft_rule_lookup_byid(net, nla[NFTA_RULE_ID]); + rule = nft_rule_lookup_byid(net, chain, nla[NFTA_RULE_ID]); if (IS_ERR(rule)) { NL_SET_BAD_ATTR(extack, nla[NFTA_RULE_ID]); return PTR_ERR(rule); @@ -2892,12 +2983,13 @@ nft_select_set_ops(const struct nft_ctx *ctx, const struct nft_set_desc *desc, enum nft_set_policies policy) { + struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); const struct nft_set_ops *ops, *bops; struct nft_set_estimate est, best; const struct nft_set_type *type; u32 flags = 0; - lockdep_assert_held(&ctx->net->nft.commit_mutex); + lockdep_assert_held(&nft_net->commit_mutex); lockdep_nfnl_nft_mutex_not_held(); #ifdef CONFIG_MODULES if (list_empty(&nf_tables_set_types)) { @@ -3043,10 +3135,11 @@ static struct nft_set *nft_set_lookup_byid(const struct net *net, const struct nft_table *table, const struct nlattr *nla, u8 genmask) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_trans *trans; u32 id = ntohl(nla_get_be32(nla)); - list_for_each_entry(trans, &net->nft.commit_list, list) { + list_for_each_entry(trans, &nft_net->commit_list, list) { if (trans->msg_type == NFT_MSG_NEWSET) { struct nft_set *set = nft_trans_set(trans); @@ -3156,23 +3249,17 @@ static __be64 nf_jiffies64_to_msecs(u64 input) static int nf_tables_fill_set(struct sk_buff *skb, const struct nft_ctx *ctx, const struct nft_set *set, u16 event, u16 flags) { - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; struct nlattr *desc; u32 portid = ctx->portid; u32 seq = ctx->seq; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), - flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, ctx->family, + NFNETLINK_V0, nft_base_seq(ctx->net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = ctx->family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(ctx->net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_SET_TABLE, ctx->table->name)) goto nla_put_failure; if (nla_put_string(skb, NFTA_SET_NAME, set->name)) @@ -3268,14 +3355,16 @@ static int nf_tables_dump_sets(struct sk_buff *skb, struct netlink_callback *cb) struct nft_table *table, *cur_table = (struct nft_table *)cb->args[2]; struct net *net = sock_net(skb->sk); struct nft_ctx *ctx = cb->data, ctx_set; + struct nftables_pernet *nft_net; if (cb->args[1]) return skb->len; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (ctx->family != NFPROTO_UNSPEC && ctx->family != table->family) continue; @@ -3569,10 +3658,15 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, if (ops->privsize != NULL) size = ops->privsize(nla, &desc); + if (!nft_use_inc(&table->use)) { + err = -EMFILE; + goto err1; + } + set = kvzalloc(sizeof(*set) + size + udlen, GFP_KERNEL); if (!set) { err = -ENOMEM; - goto err1; + goto err_alloc; } name = nla_strdup(nla[NFTA_SET_NAME], GFP_KERNEL); @@ -3619,7 +3713,7 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, goto err4; list_add_tail_rcu(&set->list, &table->sets); - table->use++; + return 0; err4: @@ -3628,6 +3722,8 @@ err3: kfree(set->name); err2: kvfree(set); +err_alloc: + nft_use_dec_restore(&table->use); err1: module_put(to_set_type(ops)->owner); return err; @@ -3687,6 +3783,12 @@ static int nf_tables_delset(struct net *net, struct sock *nlsk, return nft_delset(&ctx, set); } +static int nft_validate_register_store(const struct nft_ctx *ctx, + enum nft_registers reg, + const struct nft_data *data, + enum nft_data_types type, + unsigned int len); + static int nf_tables_bind_check_setelem(const struct nft_ctx *ctx, struct nft_set *set, const struct nft_set_iter *iter, @@ -3708,9 +3810,6 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, struct nft_set_binding *i; struct nft_set_iter iter; - if (set->use == UINT_MAX) - return -EOVERFLOW; - if (!list_empty(&set->bindings) && nft_set_is_anonymous(set)) return -EBUSY; @@ -3735,10 +3834,12 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, return iter.err; } bind: + if (!nft_use_inc(&set->use)) + return -EMFILE; + binding->chain = ctx->chain; list_add_tail_rcu(&binding->list, &set->bindings); nft_set_trans_bind(ctx, set); - set->use++; return 0; } @@ -3758,17 +3859,38 @@ void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set, } EXPORT_SYMBOL_GPL(nf_tables_unbind_set); +void nf_tables_activate_set(const struct nft_ctx *ctx, struct nft_set *set) +{ + if (nft_set_is_anonymous(set)) + nft_clear(ctx->net, set); + + nft_use_inc_restore(&set->use); +} +EXPORT_SYMBOL_GPL(nf_tables_activate_set); + void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set, struct nft_set_binding *binding, enum nft_trans_phase phase) { switch (phase) { + case NFT_TRANS_PREPARE_ERROR: + nft_set_trans_unbind(ctx, set); + if (nft_set_is_anonymous(set)) + nft_deactivate_next(ctx->net, set); + else + list_del_rcu(&binding->list); + + nft_use_dec(&set->use); + break; case NFT_TRANS_PREPARE: - set->use--; + if (nft_set_is_anonymous(set)) + nft_deactivate_next(ctx->net, set); + + nft_use_dec(&set->use); return; case NFT_TRANS_ABORT: case NFT_TRANS_RELEASE: - set->use--; + nft_use_dec(&set->use); /* fall through */ default: nf_tables_unbind_set(ctx, set, binding, @@ -3964,18 +4086,19 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb) { struct nft_set_dump_ctx *dump_ctx = cb->data; struct net *net = sock_net(skb->sk); + struct nftables_pernet *nft_net; struct nft_table *table; struct nft_set *set; struct nft_set_dump_args args; bool set_found = false; - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; struct nlattr *nest; u32 portid, seq; int event; rcu_read_lock(); - list_for_each_entry_rcu(table, &net->nft.tables, list) { + nft_net = net_generic(net, nf_tables_net_id); + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (dump_ctx->ctx.family != NFPROTO_UNSPEC && dump_ctx->ctx.family != table->family) continue; @@ -4001,16 +4124,11 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb) portid = NETLINK_CB(cb->skb).portid; seq = cb->nlh->nlmsg_seq; - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), - NLM_F_MULTI); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, NLM_F_MULTI, + table->family, NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = table->family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_SET_ELEM_LIST_TABLE, table->name)) goto nla_put_failure; if (nla_put_string(skb, NFTA_SET_ELEM_LIST_SET, set->name)) @@ -4067,22 +4185,16 @@ static int nf_tables_fill_setelem_info(struct sk_buff *skb, const struct nft_set *set, const struct nft_set_elem *elem) { - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; struct nlattr *nest; int err; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), - flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, ctx->family, + NFNETLINK_V0, nft_base_seq(ctx->net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = ctx->family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(ctx->net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_SET_TABLE, ctx->table->name)) goto nla_put_failure; if (nla_put_string(skb, NFTA_SET_NAME, set->name)) @@ -4122,11 +4234,54 @@ static int nft_setelem_parse_flags(const struct nft_set *set, return 0; } +static int nft_setelem_parse_key(struct nft_ctx *ctx, struct nft_set *set, + struct nft_data *key, struct nlattr *attr) +{ + struct nft_data_desc desc; + int err; + + err = nft_data_init(ctx, key, NFT_DATA_VALUE_MAXLEN, &desc, attr); + if (err < 0) + return err; + + if (desc.type != NFT_DATA_VALUE || desc.len != set->klen) { + nft_data_release(key, desc.type); + return -EINVAL; + } + + return 0; +} + +static int nft_setelem_parse_data(struct nft_ctx *ctx, struct nft_set *set, + struct nft_data_desc *desc, + struct nft_data *data, + struct nlattr *attr) +{ + u32 dtype; + int err; + + err = nft_data_init(ctx, data, NFT_DATA_VALUE_MAXLEN, desc, attr); + if (err < 0) + return err; + + if (set->dtype == NFT_DATA_VERDICT) + dtype = NFT_DATA_VERDICT; + else + dtype = NFT_DATA_VALUE; + + if (dtype != desc->type || + set->dlen != desc->len) { + nft_data_release(data, desc->type); + return -EINVAL; + } + + return 0; +} + static int nft_get_set_elem(struct nft_ctx *ctx, struct nft_set *set, const struct nlattr *attr) { struct nlattr *nla[NFTA_SET_ELEM_MAX + 1]; - struct nft_data_desc desc; struct nft_set_elem elem; struct sk_buff *skb; uint32_t flags = 0; @@ -4145,17 +4300,11 @@ static int nft_get_set_elem(struct nft_ctx *ctx, struct nft_set *set, if (err < 0) return err; - err = nft_data_init(ctx, &elem.key.val, sizeof(elem.key), &desc, - nla[NFTA_SET_ELEM_KEY]); + err = nft_setelem_parse_key(ctx, set, &elem.key.val, + nla[NFTA_SET_ELEM_KEY]); if (err < 0) return err; - err = -EINVAL; - if (desc.type != NFT_DATA_VALUE || desc.len != set->klen) { - nft_data_release(&elem.key.val, desc.type); - return err; - } - priv = set->ops->get(ctx->net, set, &elem, flags); if (IS_ERR(priv)) return PTR_ERR(priv); @@ -4323,7 +4472,7 @@ void nft_set_elem_destroy(const struct nft_set *set, void *elem, } } if (nft_set_ext_exists(ext, NFT_SET_EXT_OBJREF)) - (*nft_set_ext_obj(ext))->use--; + nft_use_dec(&(*nft_set_ext_obj(ext))->use); kfree(elem); } EXPORT_SYMBOL_GPL(nft_set_elem_destroy); @@ -4346,14 +4495,13 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, { struct nlattr *nla[NFTA_SET_ELEM_MAX + 1]; u8 genmask = nft_genmask_next(ctx->net); - struct nft_data_desc d1, d2; struct nft_set_ext_tmpl tmpl; struct nft_set_ext *ext, *ext2; struct nft_set_elem elem; struct nft_set_binding *binding; struct nft_object *obj = NULL; struct nft_userdata *udata; - struct nft_data data; + struct nft_data_desc desc; enum nft_registers dreg; struct nft_trans *trans; u32 flags = 0; @@ -4386,6 +4534,15 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, return -EINVAL; } + if (set->flags & NFT_SET_OBJECT) { + if (!nla[NFTA_SET_ELEM_OBJREF] && + !(flags & NFT_SET_ELEM_INTERVAL_END)) + return -EINVAL; + } else { + if (nla[NFTA_SET_ELEM_OBJREF]) + return -EINVAL; + } + if ((flags & NFT_SET_ELEM_INTERVAL_END) && (nla[NFTA_SET_ELEM_DATA] || nla[NFTA_SET_ELEM_OBJREF] || @@ -4407,15 +4564,12 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, timeout = set->timeout; } - err = nft_data_init(ctx, &elem.key.val, sizeof(elem.key), &d1, - nla[NFTA_SET_ELEM_KEY]); + err = nft_setelem_parse_key(ctx, set, &elem.key.val, + nla[NFTA_SET_ELEM_KEY]); if (err < 0) goto err1; - err = -EINVAL; - if (d1.type != NFT_DATA_VALUE || d1.len != set->klen) - goto err2; - nft_set_ext_add_length(&tmpl, NFT_SET_EXT_KEY, d1.len); + nft_set_ext_add_length(&tmpl, NFT_SET_EXT_KEY, set->klen); if (timeout > 0) { nft_set_ext_add(&tmpl, NFT_SET_EXT_EXPIRATION); if (timeout != set->timeout) @@ -4423,29 +4577,29 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, } if (nla[NFTA_SET_ELEM_OBJREF] != NULL) { - if (!(set->flags & NFT_SET_OBJECT)) { - err = -EINVAL; - goto err2; - } obj = nft_obj_lookup(ctx->table, nla[NFTA_SET_ELEM_OBJREF], set->objtype, genmask); if (IS_ERR(obj)) { err = PTR_ERR(obj); + obj = NULL; + goto err2; + } + + if (!nft_use_inc(&obj->use)) { + err = -EMFILE; + obj = NULL; goto err2; } + nft_set_ext_add(&tmpl, NFT_SET_EXT_OBJREF); } if (nla[NFTA_SET_ELEM_DATA] != NULL) { - err = nft_data_init(ctx, &data, sizeof(data), &d2, - nla[NFTA_SET_ELEM_DATA]); + err = nft_setelem_parse_data(ctx, set, &desc, &elem.data.val, + nla[NFTA_SET_ELEM_DATA]); if (err < 0) goto err2; - err = -EINVAL; - if (set->dtype != NFT_DATA_VERDICT && d2.len != set->dlen) - goto err3; - dreg = nft_type_to_reg(set->dtype); list_for_each_entry(binding, &set->bindings, list) { struct nft_ctx bind_ctx = { @@ -4459,19 +4613,19 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, continue; err = nft_validate_register_store(&bind_ctx, dreg, - &data, - d2.type, d2.len); + &elem.data.val, + desc.type, desc.len); if (err < 0) goto err3; - if (d2.type == NFT_DATA_VERDICT && - (data.verdict.code == NFT_GOTO || - data.verdict.code == NFT_JUMP)) + if (desc.type == NFT_DATA_VERDICT && + (elem.data.val.verdict.code == NFT_GOTO || + elem.data.val.verdict.code == NFT_JUMP)) nft_validate_state_update(ctx->net, NFT_VALIDATE_NEED); } - nft_set_ext_add_length(&tmpl, NFT_SET_EXT_DATA, d2.len); + nft_set_ext_add_length(&tmpl, NFT_SET_EXT_DATA, desc.len); } /* The full maximum length of userdata can exceed the maximum @@ -4487,7 +4641,8 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, } err = -ENOMEM; - elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data, data.data, + elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data, + elem.data.val.data, timeout, GFP_KERNEL); if (elem.priv == NULL) goto err3; @@ -4500,10 +4655,8 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, udata->len = ulen - 1; nla_memcpy(&udata->data, nla[NFTA_SET_ELEM_USERDATA], ulen); } - if (obj) { + if (obj) *nft_set_ext_obj(ext) = obj; - obj->use++; - } trans = nft_trans_elem_alloc(ctx, NFT_MSG_NEWSETELEM, set); if (trans == NULL) @@ -4541,7 +4694,7 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, } nft_trans_elem(trans) = elem; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; err6: @@ -4549,14 +4702,15 @@ err6: err5: kfree(trans); err4: - if (obj) - obj->use--; kfree(elem.priv); err3: if (nla[NFTA_SET_ELEM_DATA] != NULL) - nft_data_release(&data, d2.type); + nft_data_release(&elem.data.val, desc.type); err2: - nft_data_release(&elem.key.val, d1.type); + if (obj) + nft_use_dec_restore(&obj->use); + + nft_data_release(&elem.key.val, NFT_DATA_VALUE); err1: return err; } @@ -4566,6 +4720,7 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); u8 genmask = nft_genmask_next(net); const struct nlattr *attr; struct nft_set *set; @@ -4585,7 +4740,8 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, if (IS_ERR(set)) return PTR_ERR(set); - if (!list_empty(&set->bindings) && set->flags & NFT_SET_CONSTANT) + if (!list_empty(&set->bindings) && + (set->flags & (NFT_SET_CONSTANT | NFT_SET_ANONYMOUS))) return -EBUSY; nla_for_each_nested(attr, nla[NFTA_SET_ELEM_LIST_ELEMENTS], rem) { @@ -4594,7 +4750,7 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, return err; } - if (net->nft.validate_state == NFT_VALIDATE_DO) + if (nft_net->validate_state == NFT_VALIDATE_DO) return nft_table_validate(net, ctx.table); return 0; @@ -4613,11 +4769,14 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, */ void nft_data_hold(const struct nft_data *data, enum nft_data_types type) { + struct nft_chain *chain; + if (type == NFT_DATA_VERDICT) { switch (data->verdict.code) { case NFT_JUMP: case NFT_GOTO: - data->verdict.chain->use++; + chain = data->verdict.chain; + nft_use_inc_restore(&chain->use); break; } } @@ -4632,7 +4791,7 @@ static void nft_set_elem_activate(const struct net *net, if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA)) nft_data_hold(nft_set_ext_data(ext), set->dtype); if (nft_set_ext_exists(ext, NFT_SET_EXT_OBJREF)) - (*nft_set_ext_obj(ext))->use++; + nft_use_inc_restore(&(*nft_set_ext_obj(ext))->use); } static void nft_set_elem_deactivate(const struct net *net, @@ -4644,7 +4803,7 @@ static void nft_set_elem_deactivate(const struct net *net, if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA)) nft_data_release(nft_set_ext_data(ext), set->dtype); if (nft_set_ext_exists(ext, NFT_SET_EXT_OBJREF)) - (*nft_set_ext_obj(ext))->use--; + nft_use_dec(&(*nft_set_ext_obj(ext))->use); } static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, @@ -4652,7 +4811,6 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, { struct nlattr *nla[NFTA_SET_ELEM_MAX + 1]; struct nft_set_ext_tmpl tmpl; - struct nft_data_desc desc; struct nft_set_elem elem; struct nft_set_ext *ext; struct nft_trans *trans; @@ -4663,11 +4821,10 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, err = nla_parse_nested(nla, NFTA_SET_ELEM_MAX, attr, nft_set_elem_policy, NULL); if (err < 0) - goto err1; + return err; - err = -EINVAL; if (nla[NFTA_SET_ELEM_KEY] == NULL) - goto err1; + return -EINVAL; nft_set_ext_prepare(&tmpl); @@ -4677,37 +4834,31 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, if (flags != 0) nft_set_ext_add(&tmpl, NFT_SET_EXT_FLAGS); - err = nft_data_init(ctx, &elem.key.val, sizeof(elem.key), &desc, - nla[NFTA_SET_ELEM_KEY]); + err = nft_setelem_parse_key(ctx, set, &elem.key.val, + nla[NFTA_SET_ELEM_KEY]); if (err < 0) - goto err1; - - err = -EINVAL; - if (desc.type != NFT_DATA_VALUE || desc.len != set->klen) - goto err2; + return err; - nft_set_ext_add_length(&tmpl, NFT_SET_EXT_KEY, desc.len); + nft_set_ext_add_length(&tmpl, NFT_SET_EXT_KEY, set->klen); err = -ENOMEM; elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data, NULL, 0, GFP_KERNEL); if (elem.priv == NULL) - goto err2; + goto fail_elem; ext = nft_set_elem_ext(set, elem.priv); if (flags) *nft_set_ext_flags(ext) = flags; trans = nft_trans_elem_alloc(ctx, NFT_MSG_DELSETELEM, set); - if (trans == NULL) { - err = -ENOMEM; - goto err3; - } + if (trans == NULL) + goto fail_trans; priv = set->ops->deactivate(ctx->net, set, &elem); if (priv == NULL) { err = -ENOENT; - goto err4; + goto fail_ops; } kfree(elem.priv); elem.priv = priv; @@ -4715,16 +4866,15 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, nft_set_elem_deactivate(ctx->net, set, &elem); nft_trans_elem(trans) = elem; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; -err4: +fail_ops: kfree(trans); -err3: +fail_trans: kfree(elem.priv); -err2: - nft_data_release(&elem.key.val, desc.type); -err1: +fail_elem: + nft_data_release(&elem.key.val, NFT_DATA_VALUE); return err; } @@ -4750,7 +4900,7 @@ static int nft_flush_set(const struct nft_ctx *ctx, nft_set_elem_deactivate(ctx->net, set, elem); nft_trans_elem_set(trans) = set; nft_trans_elem(trans) = *elem; - list_add_tail(&trans->list, &ctx->net->nft.commit_list); + nft_trans_commit_list_add_tail(ctx->net, trans); return 0; err1: @@ -4777,7 +4927,11 @@ static int nf_tables_delsetelem(struct net *net, struct sock *nlsk, set = nft_set_lookup(ctx.table, nla[NFTA_SET_ELEM_LIST_SET], genmask); if (IS_ERR(set)) return PTR_ERR(set); - if (!list_empty(&set->bindings) && set->flags & NFT_SET_CONSTANT) + + if (nft_set_is_anonymous(set)) + return -EOPNOTSUPP; + + if (!list_empty(&set->bindings) && (set->flags & NFT_SET_CONSTANT)) return -EBUSY; if (nla[NFTA_SET_ELEM_LIST_ELEMENTS] == NULL) { @@ -5048,9 +5202,14 @@ static int nf_tables_newobj(struct net *net, struct sock *nlsk, nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla); + if (!nft_use_inc(&table->use)) + return -EMFILE; + type = nft_obj_type_get(net, objtype); - if (IS_ERR(type)) - return PTR_ERR(type); + if (IS_ERR(type)) { + err = PTR_ERR(type); + goto err_type; + } obj = nft_obj_init(&ctx, type, nla[NFTA_OBJ_DATA]); if (IS_ERR(obj)) { @@ -5071,7 +5230,7 @@ static int nf_tables_newobj(struct net *net, struct sock *nlsk, goto err3; list_add_tail_rcu(&obj->list, &table->objects); - table->use++; + return 0; err3: kfree(obj->name); @@ -5081,6 +5240,9 @@ err2: kfree(obj); err1: module_put(type->owner); +err_type: + nft_use_dec_restore(&table->use); + return err; } @@ -5089,19 +5251,14 @@ static int nf_tables_fill_obj_info(struct sk_buff *skb, struct net *net, int family, const struct nft_table *table, struct nft_object *obj, bool reset) { - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, family, + NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_OBJ_TABLE, table->name) || nla_put_string(skb, NFTA_OBJ_NAME, obj->name) || nla_put_be32(skb, NFTA_OBJ_TYPE, htonl(obj->ops->type->type)) || @@ -5132,6 +5289,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) struct nft_obj_filter *filter = cb->data; struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; + struct nftables_pernet *nft_net; struct nft_object *obj; bool reset = false; @@ -5139,9 +5297,10 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) reset = true; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (family != NFPROTO_UNSPEC && family != table->family) continue; @@ -5419,6 +5578,23 @@ struct nft_flowtable *nft_flowtable_lookup(const struct nft_table *table, } EXPORT_SYMBOL_GPL(nft_flowtable_lookup); +void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx, + struct nft_flowtable *flowtable, + enum nft_trans_phase phase) +{ + switch (phase) { + case NFT_TRANS_PREPARE_ERROR: + case NFT_TRANS_PREPARE: + case NFT_TRANS_ABORT: + case NFT_TRANS_RELEASE: + nft_use_dec(&flowtable->use); + /* fall through */ + default: + return; + } +} +EXPORT_SYMBOL_GPL(nf_tables_deactivate_flowtable); + static struct nft_flowtable * nft_flowtable_lookup_byhandle(const struct nft_table *table, const struct nlattr *nla, u8 genmask) @@ -5618,9 +5794,14 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla); + if (!nft_use_inc(&table->use)) + return -EMFILE; + flowtable = kzalloc(sizeof(*flowtable), GFP_KERNEL); - if (!flowtable) - return -ENOMEM; + if (!flowtable) { + err = -ENOMEM; + goto flowtable_alloc; + } flowtable->table = table; flowtable->handle = nf_tables_alloc_handle(table); @@ -5674,7 +5855,6 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, goto err6; list_add_tail_rcu(&flowtable->list, &table->flowtables); - table->use++; return 0; err6: @@ -5692,6 +5872,9 @@ err2: kfree(flowtable->name); err1: kfree(flowtable); +flowtable_alloc: + nft_use_dec_restore(&table->use); + return err; } @@ -5749,20 +5932,15 @@ static int nf_tables_fill_flowtable_info(struct sk_buff *skb, struct net *net, struct nft_flowtable *flowtable) { struct nlattr *nest, *nest_devs; - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; int i; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, family, + NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - if (nla_put_string(skb, NFTA_FLOWTABLE_TABLE, flowtable->table->name) || nla_put_string(skb, NFTA_FLOWTABLE_NAME, flowtable->name) || nla_put_be32(skb, NFTA_FLOWTABLE_USE, htonl(flowtable->use)) || @@ -5812,12 +5990,14 @@ static int nf_tables_dump_flowtable(struct sk_buff *skb, struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; struct nft_flowtable *flowtable; + struct nftables_pernet *nft_net; const struct nft_table *table; rcu_read_lock(); - cb->seq = net->nft.base_seq; + nft_net = net_generic(net, nf_tables_net_id); + cb->seq = nft_net->base_seq; - list_for_each_entry_rcu(table, &net->nft.tables, list) { + list_for_each_entry_rcu(table, &nft_net->tables, list) { if (family != NFPROTO_UNSPEC && family != table->family) continue; @@ -5987,21 +6167,17 @@ static void nf_tables_flowtable_destroy(struct nft_flowtable *flowtable) static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net, u32 portid, u32 seq) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; char buf[TASK_COMM_LEN]; int event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_NEWGEN); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), 0); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, 0, AF_UNSPEC, + NFNETLINK_V0, nft_base_seq(net)); + if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(net->nft.base_seq & 0xffff); - - if (nla_put_be32(skb, NFTA_GEN_ID, htonl(net->nft.base_seq)) || + if (nla_put_be32(skb, NFTA_GEN_ID, htonl(nft_net->base_seq)) || nla_put_be32(skb, NFTA_GEN_PROC_PID, htonl(task_pid_nr(current))) || nla_put_string(skb, NFTA_GEN_PROC_NAME, get_task_comm(buf, current))) goto nla_put_failure; @@ -6034,6 +6210,7 @@ static int nf_tables_flowtable_event(struct notifier_block *this, { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct nft_flowtable *flowtable; + struct nftables_pernet *nft_net; struct nft_table *table; struct net *net; @@ -6041,13 +6218,14 @@ static int nf_tables_flowtable_event(struct notifier_block *this, return 0; net = dev_net(dev); - mutex_lock(&net->nft.commit_mutex); - list_for_each_entry(table, &net->nft.tables, list) { + nft_net = net_generic(net, nf_tables_net_id); + mutex_lock(&nft_net->commit_mutex); + list_for_each_entry(table, &nft_net->tables, list) { list_for_each_entry(flowtable, &table->flowtables, list) { nft_flowtable_event(event, dev, flowtable); } } - mutex_unlock(&net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); return NOTIFY_DONE; } @@ -6228,19 +6406,22 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = { static int nf_tables_validate(struct net *net) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_table *table; - switch (net->nft.validate_state) { + switch (nft_net->validate_state) { case NFT_VALIDATE_SKIP: break; case NFT_VALIDATE_NEED: nft_validate_state_update(net, NFT_VALIDATE_DO); /* fall through */ case NFT_VALIDATE_DO: - list_for_each_entry(table, &net->nft.tables, list) { + list_for_each_entry(table, &nft_net->tables, list) { if (nft_table_validate(net, table) < 0) return -EAGAIN; } + + nft_validate_state_update(net, NFT_VALIDATE_SKIP); break; } @@ -6312,15 +6493,16 @@ static void nft_commit_release(struct nft_trans *trans) static void nf_tables_commit_release(struct net *net) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_trans *trans, *next; - if (list_empty(&net->nft.commit_list)) + if (list_empty(&nft_net->commit_list)) return; synchronize_rcu(); - list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { - list_del(&trans->list); + list_for_each_entry_safe(trans, next, &nft_net->commit_list, list) { + nft_trans_list_del(trans); nft_commit_release(trans); } } @@ -6358,9 +6540,10 @@ static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *cha static void nf_tables_commit_chain_prepare_cancel(struct net *net) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_trans *trans, *next; - list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { + list_for_each_entry_safe(trans, next, &nft_net->commit_list, list) { struct nft_chain *chain = trans->ctx.chain; if (trans->msg_type == NFT_MSG_NEWRULE || @@ -6452,17 +6635,30 @@ static void nft_chain_del(struct nft_chain *chain) static int nf_tables_commit(struct net *net, struct sk_buff *skb) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_trans *trans, *next; struct nft_trans_elem *te; struct nft_chain *chain; struct nft_table *table; + list_for_each_entry(trans, &nft_net->binding_list, binding_list) { + switch (trans->msg_type) { + case NFT_MSG_NEWSET: + if (nft_set_is_anonymous(nft_trans_set(trans)) && + !nft_trans_set_bound(trans)) { + pr_warn_once("nftables ruleset with unbound set\n"); + return -EINVAL; + } + break; + } + } + /* 0. Validate ruleset, otherwise roll back for error reporting. */ if (nf_tables_validate(net) < 0) return -EAGAIN; /* 1. Allocate space for next generation rules_gen_X[] */ - list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { + list_for_each_entry_safe(trans, next, &nft_net->commit_list, list) { int ret; if (trans->msg_type == NFT_MSG_NEWRULE || @@ -6478,7 +6674,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) } /* step 2. Make rules_gen_X visible to packet path */ - list_for_each_entry(table, &net->nft.tables, list) { + list_for_each_entry(table, &nft_net->tables, list) { list_for_each_entry(chain, &table->chains, list) nf_tables_commit_chain(net, chain); } @@ -6487,12 +6683,13 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) * Bump generation counter, invalidate any dump in progress. * Cannot fail after this point. */ - while (++net->nft.base_seq == 0); + while (++nft_net->base_seq == 0) + ; /* step 3. Start new generation, rules_gen_X now in use. */ net->nft.gencursor = nft_gencursor_next(net); - list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { + list_for_each_entry_safe(trans, next, &nft_net->commit_list, list) { switch (trans->msg_type) { case NFT_MSG_NEWTABLE: if (nft_trans_table_update(trans)) { @@ -6552,7 +6749,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) */ if (nft_set_is_anonymous(nft_trans_set(trans)) && !list_empty(&nft_trans_set(trans)->bindings)) - trans->ctx.table->use--; + nft_use_dec(&trans->ctx.table->use); nf_tables_set_notify(&trans->ctx, nft_trans_set(trans), NFT_MSG_NEWSET, GFP_KERNEL); @@ -6613,7 +6810,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) nf_tables_commit_release(net); nf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN); - mutex_unlock(&net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); return 0; } @@ -6649,10 +6846,11 @@ static void nf_tables_abort_release(struct nft_trans *trans) static int __nf_tables_abort(struct net *net) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); struct nft_trans *trans, *next; struct nft_trans_elem *te; - list_for_each_entry_safe_reverse(trans, next, &net->nft.commit_list, + list_for_each_entry_safe_reverse(trans, next, &nft_net->commit_list, list) { switch (trans->msg_type) { case NFT_MSG_NEWTABLE: @@ -6677,7 +6875,7 @@ static int __nf_tables_abort(struct net *net) kfree(nft_trans_chain_name(trans)); nft_trans_destroy(trans); } else { - trans->ctx.table->use--; + nft_use_dec_restore(&trans->ctx.table->use); nft_chain_del(trans->ctx.chain); nf_tables_unregister_hook(trans->ctx.net, trans->ctx.table, @@ -6685,25 +6883,25 @@ static int __nf_tables_abort(struct net *net) } break; case NFT_MSG_DELCHAIN: - trans->ctx.table->use++; + nft_use_inc_restore(&trans->ctx.table->use); nft_clear(trans->ctx.net, trans->ctx.chain); nft_trans_destroy(trans); break; case NFT_MSG_NEWRULE: - trans->ctx.chain->use--; + nft_use_dec_restore(&trans->ctx.chain->use); list_del_rcu(&nft_trans_rule(trans)->list); nft_rule_expr_deactivate(&trans->ctx, nft_trans_rule(trans), NFT_TRANS_ABORT); break; case NFT_MSG_DELRULE: - trans->ctx.chain->use++; + nft_use_inc_restore(&trans->ctx.chain->use); nft_clear(trans->ctx.net, nft_trans_rule(trans)); nft_rule_expr_activate(&trans->ctx, nft_trans_rule(trans)); nft_trans_destroy(trans); break; case NFT_MSG_NEWSET: - trans->ctx.table->use--; + nft_use_dec_restore(&trans->ctx.table->use); if (nft_trans_set_bound(trans)) { nft_trans_destroy(trans); break; @@ -6711,7 +6909,7 @@ static int __nf_tables_abort(struct net *net) list_del_rcu(&nft_trans_set(trans)->list); break; case NFT_MSG_DELSET: - trans->ctx.table->use++; + nft_use_inc_restore(&trans->ctx.table->use); nft_clear(trans->ctx.net, nft_trans_set(trans)); nft_trans_destroy(trans); break; @@ -6734,22 +6932,22 @@ static int __nf_tables_abort(struct net *net) nft_trans_destroy(trans); break; case NFT_MSG_NEWOBJ: - trans->ctx.table->use--; + nft_use_dec_restore(&trans->ctx.table->use); list_del_rcu(&nft_trans_obj(trans)->list); break; case NFT_MSG_DELOBJ: - trans->ctx.table->use++; + nft_use_inc_restore(&trans->ctx.table->use); nft_clear(trans->ctx.net, nft_trans_obj(trans)); nft_trans_destroy(trans); break; case NFT_MSG_NEWFLOWTABLE: - trans->ctx.table->use--; + nft_use_dec_restore(&trans->ctx.table->use); list_del_rcu(&nft_trans_flowtable(trans)->list); nft_unregister_flowtable_net_hooks(net, nft_trans_flowtable(trans)); break; case NFT_MSG_DELFLOWTABLE: - trans->ctx.table->use++; + nft_use_inc_restore(&trans->ctx.table->use); nft_clear(trans->ctx.net, nft_trans_flowtable(trans)); nft_trans_destroy(trans); break; @@ -6759,37 +6957,34 @@ static int __nf_tables_abort(struct net *net) synchronize_rcu(); list_for_each_entry_safe_reverse(trans, next, - &net->nft.commit_list, list) { - list_del(&trans->list); + &nft_net->commit_list, list) { + nft_trans_list_del(trans); nf_tables_abort_release(trans); } return 0; } -static void nf_tables_cleanup(struct net *net) -{ - nft_validate_state_update(net, NFT_VALIDATE_SKIP); -} - static int nf_tables_abort(struct net *net, struct sk_buff *skb) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); int ret = __nf_tables_abort(net); - mutex_unlock(&net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); return ret; } static bool nf_tables_valid_genid(struct net *net, u32 genid) { + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); bool genid_ok; - mutex_lock(&net->nft.commit_mutex); + mutex_lock(&nft_net->commit_mutex); - genid_ok = genid == 0 || net->nft.base_seq == genid; + genid_ok = genid == 0 || nft_net->base_seq == genid; if (!genid_ok) - mutex_unlock(&net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); /* else, commit mutex has to be released by commit or abort function */ return genid_ok; @@ -6802,7 +6997,6 @@ static const struct nfnetlink_subsystem nf_tables_subsys = { .cb = nf_tables_cb, .commit = nf_tables_commit, .abort = nf_tables_abort, - .cleanup = nf_tables_cleanup, .valid_genid = nf_tables_valid_genid, .owner = THIS_MODULE, }; @@ -6964,28 +7158,24 @@ int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest) } EXPORT_SYMBOL_GPL(nft_parse_u32_check); -/** - * nft_parse_register - parse a register value from a netlink attribute - * - * @attr: netlink attribute - * - * Parse and translate a register value from a netlink attribute. - * Registers used to be 128 bit wide, these register numbers will be - * mapped to the corresponding 32 bit register numbers. - */ -unsigned int nft_parse_register(const struct nlattr *attr) +static int nft_parse_register(const struct nlattr *attr, u32 *preg) { unsigned int reg; reg = ntohl(nla_get_be32(attr)); switch (reg) { case NFT_REG_VERDICT...NFT_REG_4: - return reg * NFT_REG_SIZE / NFT_REG32_SIZE; + *preg = reg * NFT_REG_SIZE / NFT_REG32_SIZE; + break; + case NFT_REG32_00...NFT_REG32_15: + *preg = reg + NFT_REG_SIZE / NFT_REG32_SIZE - NFT_REG32_00; + break; default: - return reg + NFT_REG_SIZE / NFT_REG32_SIZE - NFT_REG32_00; + return -ERANGE; } + + return 0; } -EXPORT_SYMBOL_GPL(nft_parse_register); /** * nft_dump_register - dump a register value to a netlink attribute @@ -7018,7 +7208,7 @@ EXPORT_SYMBOL_GPL(nft_dump_register); * Validate that the input register is one of the general purpose * registers and that the length of the load is within the bounds. */ -int nft_validate_register_load(enum nft_registers reg, unsigned int len) +static int nft_validate_register_load(enum nft_registers reg, unsigned int len) { if (reg < NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE) return -EINVAL; @@ -7029,7 +7219,24 @@ int nft_validate_register_load(enum nft_registers reg, unsigned int len) return 0; } -EXPORT_SYMBOL_GPL(nft_validate_register_load); + +int nft_parse_register_load(const struct nlattr *attr, u8 *sreg, u32 len) +{ + u32 reg; + int err; + + err = nft_parse_register(attr, ®); + if (err < 0) + return err; + + err = nft_validate_register_load(reg, len); + if (err < 0) + return err; + + *sreg = reg; + return 0; +} +EXPORT_SYMBOL_GPL(nft_parse_register_load); /** * nft_validate_register_store - validate an expressions' register store @@ -7045,10 +7252,11 @@ EXPORT_SYMBOL_GPL(nft_validate_register_load); * A value of NULL for the data means that its runtime gathered * data. */ -int nft_validate_register_store(const struct nft_ctx *ctx, - enum nft_registers reg, - const struct nft_data *data, - enum nft_data_types type, unsigned int len) +static int nft_validate_register_store(const struct nft_ctx *ctx, + enum nft_registers reg, + const struct nft_data *data, + enum nft_data_types type, + unsigned int len) { int err; @@ -7080,7 +7288,27 @@ int nft_validate_register_store(const struct nft_ctx *ctx, return 0; } } -EXPORT_SYMBOL_GPL(nft_validate_register_store); + +int nft_parse_register_store(const struct nft_ctx *ctx, + const struct nlattr *attr, u8 *dreg, + const struct nft_data *data, + enum nft_data_types type, unsigned int len) +{ + int err; + u32 reg; + + err = nft_parse_register(attr, ®); + if (err < 0) + return err; + + err = nft_validate_register_store(ctx, reg, data, type, len); + if (err < 0) + return err; + + *dreg = reg; + return 0; +} +EXPORT_SYMBOL_GPL(nft_parse_register_store); static const struct nla_policy nft_verdict_policy[NFTA_VERDICT_MAX + 1] = { [NFTA_VERDICT_CODE] = { .type = NLA_U32 }, @@ -7103,6 +7331,9 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data, if (!tb[NFTA_VERDICT_CODE]) return -EINVAL; + + /* zero padding hole for memcmp */ + memset(data, 0, sizeof(*data)); data->verdict.code = ntohl(nla_get_be32(tb[NFTA_VERDICT_CODE])); switch (data->verdict.code) { @@ -7130,8 +7361,9 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data, return PTR_ERR(chain); if (nft_is_base_chain(chain)) return -EOPNOTSUPP; + if (!nft_use_inc(&chain->use)) + return -EMFILE; - chain->use++; data->verdict.chain = chain; break; } @@ -7143,10 +7375,13 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data, static void nft_verdict_uninit(const struct nft_data *data) { + struct nft_chain *chain; + switch (data->verdict.code) { case NFT_JUMP: case NFT_GOTO: - data->verdict.chain->use--; + chain = data->verdict.chain; + nft_use_dec(&chain->use); break; } } @@ -7299,21 +7534,20 @@ int __nft_release_basechain(struct nft_ctx *ctx) nf_tables_unregister_hook(ctx->net, ctx->chain->table, ctx->chain); list_for_each_entry_safe(rule, nr, &ctx->chain->rules, list) { list_del(&rule->list); - ctx->chain->use--; + nft_use_dec(&ctx->chain->use); nf_tables_rule_release(ctx, rule); } nft_chain_del(ctx->chain); - ctx->table->use--; + nft_use_dec(&ctx->table->use); nf_tables_chain_destroy(ctx); return 0; } EXPORT_SYMBOL_GPL(__nft_release_basechain); -static void __nft_release_tables(struct net *net) +static void __nft_release_table(struct net *net, struct nft_table *table) { struct nft_flowtable *flowtable, *nf; - struct nft_table *table, *nt; struct nft_chain *chain, *nc; struct nft_object *obj, *ne; struct nft_rule *rule, *nr; @@ -7323,71 +7557,85 @@ static void __nft_release_tables(struct net *net) .family = NFPROTO_NETDEV, }; - list_for_each_entry_safe(table, nt, &net->nft.tables, list) { - ctx.family = table->family; + ctx.family = table->family; - list_for_each_entry(chain, &table->chains, list) - nf_tables_unregister_hook(net, table, chain); - /* No packets are walking on these chains anymore. */ - ctx.table = table; - list_for_each_entry(chain, &table->chains, list) { - ctx.chain = chain; - list_for_each_entry_safe(rule, nr, &chain->rules, list) { - list_del(&rule->list); - chain->use--; - nf_tables_rule_release(&ctx, rule); - } - } - list_for_each_entry_safe(flowtable, nf, &table->flowtables, list) { - list_del(&flowtable->list); - table->use--; - nf_tables_flowtable_destroy(flowtable); - } - list_for_each_entry_safe(set, ns, &table->sets, list) { - list_del(&set->list); - table->use--; - nft_set_destroy(set); - } - list_for_each_entry_safe(obj, ne, &table->objects, list) { - list_del(&obj->list); - table->use--; - nft_obj_destroy(&ctx, obj); - } - list_for_each_entry_safe(chain, nc, &table->chains, list) { - ctx.chain = chain; - nft_chain_del(chain); - table->use--; - nf_tables_chain_destroy(&ctx); + list_for_each_entry(chain, &table->chains, list) + nf_tables_unregister_hook(net, table, chain); + /* No packets are walking on these chains anymore. */ + ctx.table = table; + list_for_each_entry(chain, &table->chains, list) { + ctx.chain = chain; + list_for_each_entry_safe(rule, nr, &chain->rules, list) { + list_del(&rule->list); + nft_use_dec(&chain->use); + nf_tables_rule_release(&ctx, rule); } - list_del(&table->list); - nf_tables_table_destroy(&ctx); } + list_for_each_entry_safe(flowtable, nf, &table->flowtables, list) { + list_del(&flowtable->list); + nft_use_dec(&table->use); + nf_tables_flowtable_destroy(flowtable); + } + list_for_each_entry_safe(set, ns, &table->sets, list) { + list_del(&set->list); + nft_use_dec(&table->use); + nft_set_destroy(set); + } + list_for_each_entry_safe(obj, ne, &table->objects, list) { + list_del(&obj->list); + nft_use_dec(&table->use); + nft_obj_destroy(&ctx, obj); + } + list_for_each_entry_safe(chain, nc, &table->chains, list) { + ctx.chain = chain; + nft_chain_del(chain); + nft_use_dec(&table->use); + nf_tables_chain_destroy(&ctx); + } + list_del(&table->list); + nf_tables_table_destroy(&ctx); +} + +static void __nft_release_tables(struct net *net) +{ + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nft_table *table, *nt; + + list_for_each_entry_safe(table, nt, &nft_net->tables, list) + __nft_release_table(net, table); } static int __net_init nf_tables_init_net(struct net *net) { - INIT_LIST_HEAD(&net->nft.tables); - INIT_LIST_HEAD(&net->nft.commit_list); - mutex_init(&net->nft.commit_mutex); - net->nft.base_seq = 1; - net->nft.validate_state = NFT_VALIDATE_SKIP; + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + + INIT_LIST_HEAD(&nft_net->tables); + INIT_LIST_HEAD(&nft_net->commit_list); + INIT_LIST_HEAD(&nft_net->binding_list); + mutex_init(&nft_net->commit_mutex); + nft_net->base_seq = 1; + nft_net->validate_state = NFT_VALIDATE_SKIP; return 0; } static void __net_exit nf_tables_exit_net(struct net *net) { - mutex_lock(&net->nft.commit_mutex); - if (!list_empty(&net->nft.commit_list)) + struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + + mutex_lock(&nft_net->commit_mutex); + if (!list_empty(&nft_net->commit_list)) __nf_tables_abort(net); __nft_release_tables(net); - mutex_unlock(&net->nft.commit_mutex); - WARN_ON_ONCE(!list_empty(&net->nft.tables)); + mutex_unlock(&nft_net->commit_mutex); + WARN_ON_ONCE(!list_empty(&nft_net->tables)); } static struct pernet_operations nf_tables_net_ops = { .init = nf_tables_init_net, .exit = nf_tables_exit_net, + .id = &nf_tables_net_id, + .size = sizeof(struct nftables_pernet), }; static int __init nf_tables_module_init(void) diff --git a/net/netfilter/nf_tables_trace.c b/net/netfilter/nf_tables_trace.c index e1dc527a493b..7a19c517b191 100644 --- a/net/netfilter/nf_tables_trace.c +++ b/net/netfilter/nf_tables_trace.c @@ -186,7 +186,6 @@ static bool nft_trace_have_verdict_chain(struct nft_traceinfo *info) void nft_trace_notify(struct nft_traceinfo *info) { const struct nft_pktinfo *pkt = info->pkt; - struct nfgenmsg *nfmsg; struct nlmsghdr *nlh; struct sk_buff *skb; unsigned int size; @@ -222,15 +221,11 @@ void nft_trace_notify(struct nft_traceinfo *info) return; event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_TRACE); - nlh = nlmsg_put(skb, 0, 0, event, sizeof(struct nfgenmsg), 0); + nlh = nfnl_msg_put(skb, 0, 0, event, 0, info->basechain->type->family, + NFNETLINK_V0, 0); if (!nlh) goto nla_put_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = info->basechain->type->family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_be32(skb, NFTA_TRACE_NFPROTO, htonl(nft_pf(pkt)))) goto nla_put_failure; diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 9bacddc761ba..0267be2e9cfe 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -452,7 +452,8 @@ ack: * processed, this avoids that the same error is * reported several times when replaying the batch. */ - if (nfnl_err_add(&err_list, nlh, err, &extack) < 0) { + if (err == -ENOMEM || + nfnl_err_add(&err_list, nlh, err, &extack) < 0) { /* We failed to enqueue an error, reset the * list of errors and send OOM to userspace * pointing to the batch header. @@ -495,8 +496,6 @@ done: } else { ss->abort(net, oskb); } - if (ss->cleanup) - ss->cleanup(net); nfnl_err_deliver(&err_list, oskb); kfree_skb(skb); diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c index 8fa8bf7c48e6..7c5f428dc5c9 100644 --- a/net/netfilter/nfnetlink_acct.c +++ b/net/netfilter/nfnetlink_acct.c @@ -135,21 +135,16 @@ nfnl_acct_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, int event, struct nf_acct *acct) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; u64 pkts, bytes; u32 old_flags; event = nfnl_msg_type(NFNL_SUBSYS_ACCT, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_string(skb, NFACCT_NAME, acct->name)) goto nla_put_failure; diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c index c8b0f1122c44..720177721e3c 100644 --- a/net/netfilter/nfnetlink_cthelper.c +++ b/net/netfilter/nfnetlink_cthelper.c @@ -532,20 +532,15 @@ nfnl_cthelper_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, int event, struct nf_conntrack_helper *helper) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; int status; event = nfnl_msg_type(NFNL_SUBSYS_CTHELPER, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_string(skb, NFCTH_NAME, helper->name)) goto nla_put_failure; diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c index 70a7382b9787..ae01e9ad5546 100644 --- a/net/netfilter/nfnetlink_cttimeout.c +++ b/net/netfilter/nfnetlink_cttimeout.c @@ -164,20 +164,15 @@ ctnl_timeout_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, int event, struct ctnl_timeout *timeout) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; const struct nf_conntrack_l4proto *l4proto = timeout->timeout.l4proto; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_TIMEOUT, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_string(skb, CTA_TIMEOUT_NAME, timeout->name) || nla_put_be16(skb, CTA_TIMEOUT_L3PROTO, htons(timeout->timeout.l3num)) || @@ -396,19 +391,14 @@ cttimeout_default_fill_info(struct net *net, struct sk_buff *skb, u32 portid, const unsigned int *timeouts) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_TIMEOUT, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, AF_UNSPEC, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = AF_UNSPEC; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_be16(skb, CTA_TIMEOUT_L3PROTO, htons(l4proto->l3proto)) || nla_put_u8(skb, CTA_TIMEOUT_L4PROTO, l4proto->l4proto)) goto nla_put_failure; diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 17ca9a681d47..1735bcb07381 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -404,20 +404,15 @@ __build_packet_message(struct nfnl_log_net *log, { struct nfulnl_msg_packet_hdr pmsg; struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; sk_buff_data_t old_tail = inst->skb->tail; struct sock *sk; const unsigned char *hwhdrp; - nlh = nlmsg_put(inst->skb, 0, 0, - nfnl_msg_type(NFNL_SUBSYS_ULOG, NFULNL_MSG_PACKET), - sizeof(struct nfgenmsg), 0); + nlh = nfnl_msg_put(inst->skb, 0, 0, + nfnl_msg_type(NFNL_SUBSYS_ULOG, NFULNL_MSG_PACKET), + 0, pf, NFNETLINK_V0, htons(inst->group_num)); if (!nlh) return -1; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = pf; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(inst->group_num); memset(&pmsg, 0, sizeof(pmsg)); pmsg.hw_protocol = skb->protocol; @@ -636,8 +631,8 @@ nfulnl_log_packet(struct net *net, unsigned int plen = 0; struct nfnl_log_net *log = nfnl_log_pernet(net); const struct nfnl_ct_hook *nfnl_ct = NULL; + enum ip_conntrack_info ctinfo = 0; struct nf_conn *ct = NULL; - enum ip_conntrack_info uninitialized_var(ctinfo); if (li_user && li_user->type == NF_LOG_TYPE_ULOG) li = li_user; diff --git a/net/netfilter/nfnetlink_osf.c b/net/netfilter/nfnetlink_osf.c index 917f06110c82..f3676238e64f 100644 --- a/net/netfilter/nfnetlink_osf.c +++ b/net/netfilter/nfnetlink_osf.c @@ -318,6 +318,14 @@ static int nfnl_osf_add_callback(struct net *net, struct sock *ctnl, f = nla_data(osf_attrs[OSF_ATTR_FINGER]); + if (f->opt_num > ARRAY_SIZE(f->opt)) + return -EINVAL; + + if (!memchr(f->genre, 0, MAXGENRELEN) || + !memchr(f->subtype, 0, MAXGENRELEN) || + !memchr(f->version, 0, MAXGENRELEN)) + return -EINVAL; + kf = kmalloc(sizeof(struct nf_osf_finger), GFP_KERNEL); if (!kf) return -ENOMEM; @@ -442,3 +450,4 @@ module_init(nfnl_osf_init); module_exit(nfnl_osf_fini); MODULE_LICENSE("GPL"); +MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_OSF); diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index cd496b074a71..1aacc31a6bf9 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -387,12 +387,11 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, struct nlattr *nla; struct nfqnl_msg_packet_hdr *pmsg; struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; struct sk_buff *entskb = entry->skb; struct net_device *indev; struct net_device *outdev; struct nf_conn *ct = NULL; - enum ip_conntrack_info uninitialized_var(ctinfo); + enum ip_conntrack_info ctinfo; struct nfnl_ct_hook *nfnl_ct; bool csum_verify; char *secdata = NULL; @@ -473,18 +472,15 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, goto nlmsg_failure; } - nlh = nlmsg_put(skb, 0, 0, - nfnl_msg_type(NFNL_SUBSYS_QUEUE, NFQNL_MSG_PACKET), - sizeof(struct nfgenmsg), 0); + nlh = nfnl_msg_put(skb, 0, 0, + nfnl_msg_type(NFNL_SUBSYS_QUEUE, NFQNL_MSG_PACKET), + 0, entry->state.pf, NFNETLINK_V0, + htons(queue->queue_num)); if (!nlh) { skb_tx_error(entskb); kfree_skb(skb); goto nlmsg_failure; } - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = entry->state.pf; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = htons(queue->queue_num); nla = __nla_reserve(skb, NFQA_PACKET_HDR, sizeof(*pmsg)); pmsg = nla_data(nla); @@ -1191,7 +1187,7 @@ static int nfqnl_recv_verdict(struct net *net, struct sock *ctnl, struct nfqnl_instance *queue; unsigned int verdict; struct nf_queue_entry *entry; - enum ip_conntrack_info uninitialized_var(ctinfo); + enum ip_conntrack_info ctinfo; struct nfnl_ct_hook *nfnl_ct; struct nf_conn *ct = NULL; struct nfnl_queue_net *q = nfnl_queue_pernet(net); diff --git a/net/netfilter/nft_bitwise.c b/net/netfilter/nft_bitwise.c index 058ee84ea531..c1055251ebde 100644 --- a/net/netfilter/nft_bitwise.c +++ b/net/netfilter/nft_bitwise.c @@ -18,8 +18,8 @@ #include <net/netfilter/nf_tables.h> struct nft_bitwise { - enum nft_registers sreg:8; - enum nft_registers dreg:8; + u8 sreg; + u8 dreg; u8 len; struct nft_data mask; struct nft_data xor; @@ -68,14 +68,14 @@ static int nft_bitwise_init(const struct nft_ctx *ctx, priv->len = len; - priv->sreg = nft_parse_register(tb[NFTA_BITWISE_SREG]); - err = nft_validate_register_load(priv->sreg, priv->len); + err = nft_parse_register_load(tb[NFTA_BITWISE_SREG], &priv->sreg, + priv->len); if (err < 0) return err; - priv->dreg = nft_parse_register(tb[NFTA_BITWISE_DREG]); - err = nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, priv->len); + err = nft_parse_register_store(ctx, tb[NFTA_BITWISE_DREG], + &priv->dreg, NULL, NFT_DATA_VALUE, + priv->len); if (err < 0) return err; diff --git a/net/netfilter/nft_byteorder.c b/net/netfilter/nft_byteorder.c index 13d4e421a6b3..dba16126c7ee 100644 --- a/net/netfilter/nft_byteorder.c +++ b/net/netfilter/nft_byteorder.c @@ -19,8 +19,8 @@ #include <net/netfilter/nf_tables.h> struct nft_byteorder { - enum nft_registers sreg:8; - enum nft_registers dreg:8; + u8 sreg; + u8 dreg; enum nft_byteorder_ops op:8; u8 len; u8 size; @@ -33,11 +33,11 @@ static void nft_byteorder_eval(const struct nft_expr *expr, const struct nft_byteorder *priv = nft_expr_priv(expr); u32 *src = ®s->data[priv->sreg]; u32 *dst = ®s->data[priv->dreg]; - union { u32 u32; u16 u16; } *s, *d; + u16 *s16, *d16; unsigned int i; - s = (void *)src; - d = (void *)dst; + s16 = (void *)src; + d16 = (void *)dst; switch (priv->size) { case 8: { @@ -63,11 +63,11 @@ static void nft_byteorder_eval(const struct nft_expr *expr, switch (priv->op) { case NFT_BYTEORDER_NTOH: for (i = 0; i < priv->len / 4; i++) - d[i].u32 = ntohl((__force __be32)s[i].u32); + dst[i] = ntohl((__force __be32)src[i]); break; case NFT_BYTEORDER_HTON: for (i = 0; i < priv->len / 4; i++) - d[i].u32 = (__force __u32)htonl(s[i].u32); + dst[i] = (__force __u32)htonl(src[i]); break; } break; @@ -75,11 +75,11 @@ static void nft_byteorder_eval(const struct nft_expr *expr, switch (priv->op) { case NFT_BYTEORDER_NTOH: for (i = 0; i < priv->len / 2; i++) - d[i].u16 = ntohs((__force __be16)s[i].u16); + d16[i] = ntohs((__force __be16)s16[i]); break; case NFT_BYTEORDER_HTON: for (i = 0; i < priv->len / 2; i++) - d[i].u16 = (__force __u16)htons(s[i].u16); + d16[i] = (__force __u16)htons(s16[i]); break; } break; @@ -133,20 +133,20 @@ static int nft_byteorder_init(const struct nft_ctx *ctx, return -EINVAL; } - priv->sreg = nft_parse_register(tb[NFTA_BYTEORDER_SREG]); err = nft_parse_u32_check(tb[NFTA_BYTEORDER_LEN], U8_MAX, &len); if (err < 0) return err; priv->len = len; - err = nft_validate_register_load(priv->sreg, priv->len); + err = nft_parse_register_load(tb[NFTA_BYTEORDER_SREG], &priv->sreg, + priv->len); if (err < 0) return err; - priv->dreg = nft_parse_register(tb[NFTA_BYTEORDER_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, priv->len); + return nft_parse_register_store(ctx, tb[NFTA_BYTEORDER_DREG], + &priv->dreg, NULL, NFT_DATA_VALUE, + priv->len); } static int nft_byteorder_dump(struct sk_buff *skb, const struct nft_expr *expr) diff --git a/net/netfilter/nft_chain_filter.c b/net/netfilter/nft_chain_filter.c index 3fd540b2c6ba..a308d45ee95e 100644 --- a/net/netfilter/nft_chain_filter.c +++ b/net/netfilter/nft_chain_filter.c @@ -2,6 +2,7 @@ #include <linux/kernel.h> #include <linux/netdevice.h> #include <net/net_namespace.h> +#include <net/netns/generic.h> #include <net/netfilter/nf_tables.h> #include <linux/netfilter_ipv4.h> #include <linux/netfilter_ipv6.h> @@ -10,6 +11,8 @@ #include <net/netfilter/nf_tables_ipv4.h> #include <net/netfilter/nf_tables_ipv6.h> +extern unsigned int nf_tables_net_id; + #ifdef CONFIG_NF_TABLES_IPV4 static unsigned int nft_do_chain_ipv4(void *priv, struct sk_buff *skb, @@ -315,6 +318,7 @@ static int nf_tables_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct nftables_pernet *nft_net; struct nft_table *table; struct nft_chain *chain, *nr; struct nft_ctx ctx = { @@ -325,8 +329,9 @@ static int nf_tables_netdev_event(struct notifier_block *this, event != NETDEV_CHANGENAME) return NOTIFY_DONE; - mutex_lock(&ctx.net->nft.commit_mutex); - list_for_each_entry(table, &ctx.net->nft.tables, list) { + nft_net = net_generic(ctx.net, nf_tables_net_id); + mutex_lock(&nft_net->commit_mutex); + list_for_each_entry(table, &nft_net->tables, list) { if (table->family != NFPROTO_NETDEV) continue; @@ -340,7 +345,7 @@ static int nf_tables_netdev_event(struct notifier_block *this, nft_netdev_event(event, dev, &ctx); } } - mutex_unlock(&ctx.net->nft.commit_mutex); + mutex_unlock(&nft_net->commit_mutex); return NOTIFY_DONE; } diff --git a/net/netfilter/nft_cmp.c b/net/netfilter/nft_cmp.c index 7007045c0849..36bf64ebc892 100644 --- a/net/netfilter/nft_cmp.c +++ b/net/netfilter/nft_cmp.c @@ -19,7 +19,7 @@ struct nft_cmp_expr { struct nft_data data; - enum nft_registers sreg:8; + u8 sreg; u8 len; enum nft_cmp_ops op:8; }; @@ -88,8 +88,7 @@ static int nft_cmp_init(const struct nft_ctx *ctx, const struct nft_expr *expr, return err; } - priv->sreg = nft_parse_register(tb[NFTA_CMP_SREG]); - err = nft_validate_register_load(priv->sreg, desc.len); + err = nft_parse_register_load(tb[NFTA_CMP_SREG], &priv->sreg, desc.len); if (err < 0) return err; @@ -139,8 +138,7 @@ static int nft_cmp_fast_init(const struct nft_ctx *ctx, if (err < 0) return err; - priv->sreg = nft_parse_register(tb[NFTA_CMP_SREG]); - err = nft_validate_register_load(priv->sreg, desc.len); + err = nft_parse_register_load(tb[NFTA_CMP_SREG], &priv->sreg, desc.len); if (err < 0) return err; diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c index 469f9da5073b..2846d64659f2 100644 --- a/net/netfilter/nft_compat.c +++ b/net/netfilter/nft_compat.c @@ -575,19 +575,14 @@ nfnl_compat_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type, int rev, int target) { struct nlmsghdr *nlh; - struct nfgenmsg *nfmsg; unsigned int flags = portid ? NLM_F_MULTI : 0; event = nfnl_msg_type(NFNL_SUBSYS_NFT_COMPAT, event); - nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags); - if (nlh == NULL) + nlh = nfnl_msg_put(skb, portid, seq, event, flags, family, + NFNETLINK_V0, 0); + if (!nlh) goto nlmsg_failure; - nfmsg = nlmsg_data(nlh); - nfmsg->nfgen_family = family; - nfmsg->version = NFNETLINK_V0; - nfmsg->res_id = 0; - if (nla_put_string(skb, NFTA_COMPAT_NAME, name) || nla_put_be32(skb, NFTA_COMPAT_REV, htonl(rev)) || nla_put_be32(skb, NFTA_COMPAT_TYPE, htonl(target))) diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c index 5dd87748afa8..f29f02805bcc 100644 --- a/net/netfilter/nft_ct.c +++ b/net/netfilter/nft_ct.c @@ -29,8 +29,8 @@ struct nft_ct { enum nft_ct_keys key:8; enum ip_conntrack_dir dir:8; union { - enum nft_registers dreg:8; - enum nft_registers sreg:8; + u8 dreg; + u8 sreg; }; }; @@ -486,9 +486,8 @@ static int nft_ct_get_init(const struct nft_ctx *ctx, } } - priv->dreg = nft_parse_register(tb[NFTA_CT_DREG]); - err = nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + err = nft_parse_register_store(ctx, tb[NFTA_CT_DREG], &priv->dreg, NULL, + NFT_DATA_VALUE, len); if (err < 0) return err; @@ -581,8 +580,7 @@ static int nft_ct_set_init(const struct nft_ctx *ctx, } } - priv->sreg = nft_parse_register(tb[NFTA_CT_SREG]); - err = nft_validate_register_load(priv->sreg, len); + err = nft_parse_register_load(tb[NFTA_CT_SREG], &priv->sreg, len); if (err < 0) goto err1; diff --git a/net/netfilter/nft_dup_netdev.c b/net/netfilter/nft_dup_netdev.c index 2cc1e0ef56e8..e862f916efa0 100644 --- a/net/netfilter/nft_dup_netdev.c +++ b/net/netfilter/nft_dup_netdev.c @@ -16,7 +16,7 @@ #include <net/netfilter/nf_dup_netdev.h> struct nft_dup_netdev { - enum nft_registers sreg_dev:8; + u8 sreg_dev; }; static void nft_dup_netdev_eval(const struct nft_expr *expr, @@ -42,8 +42,8 @@ static int nft_dup_netdev_init(const struct nft_ctx *ctx, if (tb[NFTA_DUP_SREG_DEV] == NULL) return -EINVAL; - priv->sreg_dev = nft_parse_register(tb[NFTA_DUP_SREG_DEV]); - return nft_validate_register_load(priv->sreg_dev, sizeof(int)); + return nft_parse_register_load(tb[NFTA_DUP_SREG_DEV], &priv->sreg_dev, + sizeof(int)); } static const struct nft_expr_ops nft_dup_netdev_ingress_ops; diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c index cc076d535e14..a4c6aba7da7e 100644 --- a/net/netfilter/nft_dynset.c +++ b/net/netfilter/nft_dynset.c @@ -15,13 +15,16 @@ #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> #include <net/netfilter/nf_tables_core.h> +#include <net/netns/generic.h> + +extern unsigned int nf_tables_net_id; struct nft_dynset { struct nft_set *set; struct nft_set_ext_tmpl tmpl; enum nft_dynset_ops op:8; - enum nft_registers sreg_key:8; - enum nft_registers sreg_data:8; + u8 sreg_key; + u8 sreg_data; bool invert; u64 timeout; struct nft_expr *expr; @@ -112,13 +115,14 @@ static int nft_dynset_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { + struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); struct nft_dynset *priv = nft_expr_priv(expr); u8 genmask = nft_genmask_next(ctx->net); struct nft_set *set; u64 timeout; int err; - lockdep_assert_held(&ctx->net->nft.commit_mutex); + lockdep_assert_held(&nft_net->commit_mutex); if (tb[NFTA_DYNSET_SET_NAME] == NULL || tb[NFTA_DYNSET_OP] == NULL || @@ -140,6 +144,9 @@ static int nft_dynset_init(const struct nft_ctx *ctx, if (IS_ERR(set)) return PTR_ERR(set); + if (set->flags & NFT_SET_OBJECT) + return -EOPNOTSUPP; + if (set->ops->update == NULL) return -EOPNOTSUPP; @@ -166,8 +173,8 @@ static int nft_dynset_init(const struct nft_ctx *ctx, tb[NFTA_DYNSET_TIMEOUT]))); } - priv->sreg_key = nft_parse_register(tb[NFTA_DYNSET_SREG_KEY]); - err = nft_validate_register_load(priv->sreg_key, set->klen); + err = nft_parse_register_load(tb[NFTA_DYNSET_SREG_KEY], &priv->sreg_key, + set->klen); if (err < 0) return err; @@ -177,8 +184,8 @@ static int nft_dynset_init(const struct nft_ctx *ctx, if (set->dtype == NFT_DATA_VERDICT) return -EOPNOTSUPP; - priv->sreg_data = nft_parse_register(tb[NFTA_DYNSET_SREG_DATA]); - err = nft_validate_register_load(priv->sreg_data, set->dlen); + err = nft_parse_register_load(tb[NFTA_DYNSET_SREG_DATA], + &priv->sreg_data, set->dlen); if (err < 0) return err; } else if (set->flags & NFT_SET_MAP) @@ -248,7 +255,7 @@ static void nft_dynset_activate(const struct nft_ctx *ctx, { struct nft_dynset *priv = nft_expr_priv(expr); - priv->set->use++; + nf_tables_activate_set(ctx, priv->set); } static void nft_dynset_destroy(const struct nft_ctx *ctx, diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c index 93fee4106019..8d0f14cd7cc3 100644 --- a/net/netfilter/nft_exthdr.c +++ b/net/netfilter/nft_exthdr.c @@ -22,8 +22,8 @@ struct nft_exthdr { u8 offset; u8 len; u8 op; - enum nft_registers dreg:8; - enum nft_registers sreg:8; + u8 dreg; + u8 sreg; u8 flags; }; @@ -258,12 +258,12 @@ static int nft_exthdr_init(const struct nft_ctx *ctx, priv->type = nla_get_u8(tb[NFTA_EXTHDR_TYPE]); priv->offset = offset; priv->len = len; - priv->dreg = nft_parse_register(tb[NFTA_EXTHDR_DREG]); priv->flags = flags; priv->op = op; - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, priv->len); + return nft_parse_register_store(ctx, tb[NFTA_EXTHDR_DREG], + &priv->dreg, NULL, NFT_DATA_VALUE, + priv->len); } static int nft_exthdr_tcp_set_init(const struct nft_ctx *ctx, @@ -308,11 +308,11 @@ static int nft_exthdr_tcp_set_init(const struct nft_ctx *ctx, priv->type = nla_get_u8(tb[NFTA_EXTHDR_TYPE]); priv->offset = offset; priv->len = len; - priv->sreg = nft_parse_register(tb[NFTA_EXTHDR_SREG]); priv->flags = flags; priv->op = op; - return nft_validate_register_load(priv->sreg, priv->len); + return nft_parse_register_load(tb[NFTA_EXTHDR_SREG], &priv->sreg, + priv->len); } static int nft_exthdr_dump_common(struct sk_buff *skb, const struct nft_exthdr *priv) diff --git a/net/netfilter/nft_fib.c b/net/netfilter/nft_fib.c index 21df8cccea65..ce6891337304 100644 --- a/net/netfilter/nft_fib.c +++ b/net/netfilter/nft_fib.c @@ -88,7 +88,6 @@ int nft_fib_init(const struct nft_ctx *ctx, const struct nft_expr *expr, return -EINVAL; priv->result = ntohl(nla_get_be32(tb[NFTA_FIB_RESULT])); - priv->dreg = nft_parse_register(tb[NFTA_FIB_DREG]); switch (priv->result) { case NFT_FIB_RESULT_OIF: @@ -108,8 +107,8 @@ int nft_fib_init(const struct nft_ctx *ctx, const struct nft_expr *expr, return -EINVAL; } - err = nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + err = nft_parse_register_store(ctx, tb[NFTA_FIB_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, len); if (err < 0) return err; diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c index 166edea0e452..ec35a41c7262 100644 --- a/net/netfilter/nft_flow_offload.c +++ b/net/netfilter/nft_flow_offload.c @@ -169,18 +169,34 @@ static int nft_flow_offload_init(const struct nft_ctx *ctx, if (IS_ERR(flowtable)) return PTR_ERR(flowtable); + if (!nft_use_inc(&flowtable->use)) + return -EMFILE; + priv->flowtable = flowtable; - flowtable->use++; return nf_ct_netns_get(ctx->net, ctx->family); } -static void nft_flow_offload_destroy(const struct nft_ctx *ctx, - const struct nft_expr *expr) +static void nft_flow_offload_deactivate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + enum nft_trans_phase phase) { struct nft_flow_offload *priv = nft_expr_priv(expr); - priv->flowtable->use--; + nf_tables_deactivate_flowtable(ctx, priv->flowtable, phase); +} + +static void nft_flow_offload_activate(const struct nft_ctx *ctx, + const struct nft_expr *expr) +{ + struct nft_flow_offload *priv = nft_expr_priv(expr); + + nft_use_inc_restore(&priv->flowtable->use); +} + +static void nft_flow_offload_destroy(const struct nft_ctx *ctx, + const struct nft_expr *expr) +{ nf_ct_netns_put(ctx->net, ctx->family); } @@ -203,6 +219,8 @@ static const struct nft_expr_ops nft_flow_offload_ops = { .size = NFT_EXPR_SIZE(sizeof(struct nft_flow_offload)), .eval = nft_flow_offload_eval, .init = nft_flow_offload_init, + .activate = nft_flow_offload_activate, + .deactivate = nft_flow_offload_deactivate, .destroy = nft_flow_offload_destroy, .validate = nft_flow_offload_validate, .dump = nft_flow_offload_dump, diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c index 10a12e094929..2efbe78de3b2 100644 --- a/net/netfilter/nft_fwd_netdev.c +++ b/net/netfilter/nft_fwd_netdev.c @@ -20,7 +20,7 @@ #include <net/ip.h> struct nft_fwd_netdev { - enum nft_registers sreg_dev:8; + u8 sreg_dev; }; static void nft_fwd_netdev_eval(const struct nft_expr *expr, @@ -49,8 +49,8 @@ static int nft_fwd_netdev_init(const struct nft_ctx *ctx, if (tb[NFTA_FWD_SREG_DEV] == NULL) return -EINVAL; - priv->sreg_dev = nft_parse_register(tb[NFTA_FWD_SREG_DEV]); - return nft_validate_register_load(priv->sreg_dev, sizeof(int)); + return nft_parse_register_load(tb[NFTA_FWD_SREG_DEV], &priv->sreg_dev, + sizeof(int)); } static const struct nft_expr_ops nft_fwd_netdev_ingress_ops; @@ -69,8 +69,8 @@ nla_put_failure: } struct nft_fwd_neigh { - enum nft_registers sreg_dev:8; - enum nft_registers sreg_addr:8; + u8 sreg_dev; + u8 sreg_addr; u8 nfproto; }; @@ -148,8 +148,6 @@ static int nft_fwd_neigh_init(const struct nft_ctx *ctx, !tb[NFTA_FWD_NFPROTO]) return -EINVAL; - priv->sreg_dev = nft_parse_register(tb[NFTA_FWD_SREG_DEV]); - priv->sreg_addr = nft_parse_register(tb[NFTA_FWD_SREG_ADDR]); priv->nfproto = ntohl(nla_get_be32(tb[NFTA_FWD_NFPROTO])); switch (priv->nfproto) { @@ -163,11 +161,13 @@ static int nft_fwd_neigh_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - err = nft_validate_register_load(priv->sreg_dev, sizeof(int)); + err = nft_parse_register_load(tb[NFTA_FWD_SREG_DEV], &priv->sreg_dev, + sizeof(int)); if (err < 0) return err; - return nft_validate_register_load(priv->sreg_addr, addr_len); + return nft_parse_register_load(tb[NFTA_FWD_SREG_ADDR], &priv->sreg_addr, + addr_len); } static const struct nft_expr_ops nft_fwd_netdev_ingress_ops; diff --git a/net/netfilter/nft_hash.c b/net/netfilter/nft_hash.c index b8f23f75aea6..513419aca9c6 100644 --- a/net/netfilter/nft_hash.c +++ b/net/netfilter/nft_hash.c @@ -18,8 +18,8 @@ #include <linux/jhash.h> struct nft_jhash { - enum nft_registers sreg:8; - enum nft_registers dreg:8; + u8 sreg; + u8 dreg; u8 len; bool autogen_seed:1; u32 modulus; @@ -65,7 +65,7 @@ static void nft_jhash_map_eval(const struct nft_expr *expr, } struct nft_symhash { - enum nft_registers dreg:8; + u8 dreg; u32 modulus; u32 offset; struct nft_set *map; @@ -136,9 +136,6 @@ static int nft_jhash_init(const struct nft_ctx *ctx, if (tb[NFTA_HASH_OFFSET]) priv->offset = ntohl(nla_get_be32(tb[NFTA_HASH_OFFSET])); - priv->sreg = nft_parse_register(tb[NFTA_HASH_SREG]); - priv->dreg = nft_parse_register(tb[NFTA_HASH_DREG]); - err = nft_parse_u32_check(tb[NFTA_HASH_LEN], U8_MAX, &len); if (err < 0) return err; @@ -147,6 +144,10 @@ static int nft_jhash_init(const struct nft_ctx *ctx, priv->len = len; + err = nft_parse_register_load(tb[NFTA_HASH_SREG], &priv->sreg, len); + if (err < 0) + return err; + priv->modulus = ntohl(nla_get_be32(tb[NFTA_HASH_MODULUS])); if (priv->modulus < 1) return -ERANGE; @@ -161,9 +162,8 @@ static int nft_jhash_init(const struct nft_ctx *ctx, get_random_bytes(&priv->seed, sizeof(priv->seed)); } - return nft_validate_register_load(priv->sreg, len) && - nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, sizeof(u32)); + return nft_parse_register_store(ctx, tb[NFTA_HASH_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, sizeof(u32)); } static int nft_jhash_map_init(const struct nft_ctx *ctx, @@ -193,8 +193,6 @@ static int nft_symhash_init(const struct nft_ctx *ctx, if (tb[NFTA_HASH_OFFSET]) priv->offset = ntohl(nla_get_be32(tb[NFTA_HASH_OFFSET])); - priv->dreg = nft_parse_register(tb[NFTA_HASH_DREG]); - priv->modulus = ntohl(nla_get_be32(tb[NFTA_HASH_MODULUS])); if (priv->modulus < 1) return -ERANGE; @@ -202,8 +200,9 @@ static int nft_symhash_init(const struct nft_ctx *ctx, if (priv->offset + priv->modulus - 1 < priv->offset) return -EOVERFLOW; - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, sizeof(u32)); + return nft_parse_register_store(ctx, tb[NFTA_HASH_DREG], + &priv->dreg, NULL, NFT_DATA_VALUE, + sizeof(u32)); } static int nft_symhash_map_init(const struct nft_ctx *ctx, diff --git a/net/netfilter/nft_immediate.c b/net/netfilter/nft_immediate.c index 3f6d1d2a6281..af4e2a4bce93 100644 --- a/net/netfilter/nft_immediate.c +++ b/net/netfilter/nft_immediate.c @@ -50,9 +50,9 @@ static int nft_immediate_init(const struct nft_ctx *ctx, priv->dlen = desc.len; - priv->dreg = nft_parse_register(tb[NFTA_IMMEDIATE_DREG]); - err = nft_validate_register_store(ctx, priv->dreg, &priv->data, - desc.type, desc.len); + err = nft_parse_register_store(ctx, tb[NFTA_IMMEDIATE_DREG], + &priv->dreg, &priv->data, desc.type, + desc.len); if (err < 0) goto err1; diff --git a/net/netfilter/nft_lookup.c b/net/netfilter/nft_lookup.c index 55754d9939b5..3c380fb32651 100644 --- a/net/netfilter/nft_lookup.c +++ b/net/netfilter/nft_lookup.c @@ -20,8 +20,8 @@ struct nft_lookup { struct nft_set *set; - enum nft_registers sreg:8; - enum nft_registers dreg:8; + u8 sreg; + u8 dreg; bool invert; struct nft_set_binding binding; }; @@ -76,8 +76,8 @@ static int nft_lookup_init(const struct nft_ctx *ctx, if (IS_ERR(set)) return PTR_ERR(set); - priv->sreg = nft_parse_register(tb[NFTA_LOOKUP_SREG]); - err = nft_validate_register_load(priv->sreg, set->klen); + err = nft_parse_register_load(tb[NFTA_LOOKUP_SREG], &priv->sreg, + set->klen); if (err < 0) return err; @@ -100,9 +100,9 @@ static int nft_lookup_init(const struct nft_ctx *ctx, if (!(set->flags & NFT_SET_MAP)) return -EINVAL; - priv->dreg = nft_parse_register(tb[NFTA_LOOKUP_DREG]); - err = nft_validate_register_store(ctx, priv->dreg, NULL, - set->dtype, set->dlen); + err = nft_parse_register_store(ctx, tb[NFTA_LOOKUP_DREG], + &priv->dreg, NULL, set->dtype, + set->dlen); if (err < 0) return err; } else if (set->flags & NFT_SET_MAP) @@ -132,7 +132,7 @@ static void nft_lookup_activate(const struct nft_ctx *ctx, { struct nft_lookup *priv = nft_expr_priv(expr); - priv->set->use++; + nf_tables_activate_set(ctx, priv->set); } static void nft_lookup_destroy(const struct nft_ctx *ctx, diff --git a/net/netfilter/nft_masq.c b/net/netfilter/nft_masq.c index 9d8655bc1bea..4ecfebc2fdc4 100644 --- a/net/netfilter/nft_masq.c +++ b/net/netfilter/nft_masq.c @@ -53,19 +53,15 @@ int nft_masq_init(const struct nft_ctx *ctx, } if (tb[NFTA_MASQ_REG_PROTO_MIN]) { - priv->sreg_proto_min = - nft_parse_register(tb[NFTA_MASQ_REG_PROTO_MIN]); - - err = nft_validate_register_load(priv->sreg_proto_min, plen); + err = nft_parse_register_load(tb[NFTA_MASQ_REG_PROTO_MIN], + &priv->sreg_proto_min, plen); if (err < 0) return err; if (tb[NFTA_MASQ_REG_PROTO_MAX]) { - priv->sreg_proto_max = - nft_parse_register(tb[NFTA_MASQ_REG_PROTO_MAX]); - - err = nft_validate_register_load(priv->sreg_proto_max, - plen); + err = nft_parse_register_load(tb[NFTA_MASQ_REG_PROTO_MAX], + &priv->sreg_proto_max, + plen); if (err < 0) return err; } else { diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c index 297fe7d97c18..061a29bd3066 100644 --- a/net/netfilter/nft_meta.c +++ b/net/netfilter/nft_meta.c @@ -30,8 +30,8 @@ struct nft_meta { enum nft_meta_keys key:8; union { - enum nft_registers dreg:8; - enum nft_registers sreg:8; + u8 dreg; + u8 sreg; }; }; @@ -358,9 +358,8 @@ static int nft_meta_get_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - priv->dreg = nft_parse_register(tb[NFTA_META_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + return nft_parse_register_store(ctx, tb[NFTA_META_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, len); } static int nft_meta_get_validate(const struct nft_ctx *ctx, @@ -448,8 +447,7 @@ static int nft_meta_set_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - priv->sreg = nft_parse_register(tb[NFTA_META_SREG]); - err = nft_validate_register_load(priv->sreg, len); + err = nft_parse_register_load(tb[NFTA_META_SREG], &priv->sreg, len); if (err < 0) return err; diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c index 2c3d7ff6f58a..aa6149cc8c87 100644 --- a/net/netfilter/nft_nat.c +++ b/net/netfilter/nft_nat.c @@ -27,10 +27,10 @@ #include <net/ip.h> struct nft_nat { - enum nft_registers sreg_addr_min:8; - enum nft_registers sreg_addr_max:8; - enum nft_registers sreg_proto_min:8; - enum nft_registers sreg_proto_max:8; + u8 sreg_addr_min; + u8 sreg_addr_max; + u8 sreg_proto_min; + u8 sreg_proto_max; enum nf_nat_manip_type type:8; u8 family; u16 flags; @@ -160,18 +160,15 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr, priv->family = family; if (tb[NFTA_NAT_REG_ADDR_MIN]) { - priv->sreg_addr_min = - nft_parse_register(tb[NFTA_NAT_REG_ADDR_MIN]); - err = nft_validate_register_load(priv->sreg_addr_min, alen); + err = nft_parse_register_load(tb[NFTA_NAT_REG_ADDR_MIN], + &priv->sreg_addr_min, alen); if (err < 0) return err; if (tb[NFTA_NAT_REG_ADDR_MAX]) { - priv->sreg_addr_max = - nft_parse_register(tb[NFTA_NAT_REG_ADDR_MAX]); - - err = nft_validate_register_load(priv->sreg_addr_max, - alen); + err = nft_parse_register_load(tb[NFTA_NAT_REG_ADDR_MAX], + &priv->sreg_addr_max, + alen); if (err < 0) return err; } else { @@ -181,19 +178,15 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr, plen = FIELD_SIZEOF(struct nf_nat_range, min_addr.all); if (tb[NFTA_NAT_REG_PROTO_MIN]) { - priv->sreg_proto_min = - nft_parse_register(tb[NFTA_NAT_REG_PROTO_MIN]); - - err = nft_validate_register_load(priv->sreg_proto_min, plen); + err = nft_parse_register_load(tb[NFTA_NAT_REG_PROTO_MIN], + &priv->sreg_proto_min, plen); if (err < 0) return err; if (tb[NFTA_NAT_REG_PROTO_MAX]) { - priv->sreg_proto_max = - nft_parse_register(tb[NFTA_NAT_REG_PROTO_MAX]); - - err = nft_validate_register_load(priv->sreg_proto_max, - plen); + err = nft_parse_register_load(tb[NFTA_NAT_REG_PROTO_MAX], + &priv->sreg_proto_max, + plen); if (err < 0) return err; } else { diff --git a/net/netfilter/nft_numgen.c b/net/netfilter/nft_numgen.c index 3cc1b3dc3c3c..8ff82f17ecba 100644 --- a/net/netfilter/nft_numgen.c +++ b/net/netfilter/nft_numgen.c @@ -20,7 +20,7 @@ static DEFINE_PER_CPU(struct rnd_state, nft_numgen_prandom_state); struct nft_ng_inc { - enum nft_registers dreg:8; + u8 dreg; u32 modulus; atomic_t counter; u32 offset; @@ -70,11 +70,10 @@ static int nft_ng_inc_init(const struct nft_ctx *ctx, if (priv->offset + priv->modulus - 1 < priv->offset) return -EOVERFLOW; - priv->dreg = nft_parse_register(tb[NFTA_NG_DREG]); atomic_set(&priv->counter, priv->modulus - 1); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, sizeof(u32)); + return nft_parse_register_store(ctx, tb[NFTA_NG_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, sizeof(u32)); } static int nft_ng_dump(struct sk_buff *skb, enum nft_registers dreg, @@ -104,7 +103,7 @@ static int nft_ng_inc_dump(struct sk_buff *skb, const struct nft_expr *expr) } struct nft_ng_random { - enum nft_registers dreg:8; + u8 dreg; u32 modulus; u32 offset; }; @@ -144,10 +143,8 @@ static int nft_ng_random_init(const struct nft_ctx *ctx, prandom_init_once(&nft_numgen_prandom_state); - priv->dreg = nft_parse_register(tb[NFTA_NG_DREG]); - - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, sizeof(u32)); + return nft_parse_register_store(ctx, tb[NFTA_NG_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, sizeof(u32)); } static int nft_ng_random_dump(struct sk_buff *skb, const struct nft_expr *expr) diff --git a/net/netfilter/nft_objref.c b/net/netfilter/nft_objref.c index bf92a40dd1b2..2401e9fa17c4 100644 --- a/net/netfilter/nft_objref.c +++ b/net/netfilter/nft_objref.c @@ -43,8 +43,10 @@ static int nft_objref_init(const struct nft_ctx *ctx, if (IS_ERR(obj)) return -ENOENT; + if (!nft_use_inc(&obj->use)) + return -EMFILE; + nft_objref_priv(expr) = obj; - obj->use++; return 0; } @@ -73,7 +75,7 @@ static void nft_objref_deactivate(const struct nft_ctx *ctx, if (phase == NFT_TRANS_COMMIT) return; - obj->use--; + nft_use_dec(&obj->use); } static void nft_objref_activate(const struct nft_ctx *ctx, @@ -81,7 +83,7 @@ static void nft_objref_activate(const struct nft_ctx *ctx, { struct nft_object *obj = nft_objref_priv(expr); - obj->use++; + nft_use_inc_restore(&obj->use); } static struct nft_expr_type nft_objref_type; @@ -97,7 +99,7 @@ static const struct nft_expr_ops nft_objref_ops = { struct nft_objref_map { struct nft_set *set; - enum nft_registers sreg:8; + u8 sreg; struct nft_set_binding binding; }; @@ -139,8 +141,8 @@ static int nft_objref_map_init(const struct nft_ctx *ctx, if (!(set->flags & NFT_SET_OBJECT)) return -EINVAL; - priv->sreg = nft_parse_register(tb[NFTA_OBJREF_SET_SREG]); - err = nft_validate_register_load(priv->sreg, set->klen); + err = nft_parse_register_load(tb[NFTA_OBJREF_SET_SREG], &priv->sreg, + set->klen); if (err < 0) return err; @@ -182,7 +184,7 @@ static void nft_objref_map_activate(const struct nft_ctx *ctx, { struct nft_objref_map *priv = nft_expr_priv(expr); - priv->set->use++; + nf_tables_activate_set(ctx, priv->set); } static void nft_objref_map_destroy(const struct nft_ctx *ctx, diff --git a/net/netfilter/nft_osf.c b/net/netfilter/nft_osf.c index 4fac2d9a4b88..af2ce7a8c587 100644 --- a/net/netfilter/nft_osf.c +++ b/net/netfilter/nft_osf.c @@ -5,7 +5,7 @@ #include <linux/netfilter/nfnetlink_osf.h> struct nft_osf { - enum nft_registers dreg:8; + u8 dreg; }; static const struct nla_policy nft_osf_policy[NFTA_OSF_MAX + 1] = { @@ -55,9 +55,9 @@ static int nft_osf_init(const struct nft_ctx *ctx, if (!tb[NFTA_OSF_DREG]) return -EINVAL; - priv->dreg = nft_parse_register(tb[NFTA_OSF_DREG]); - err = nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, NFT_OSF_MAXGENRELEN); + err = nft_parse_register_store(ctx, tb[NFTA_OSF_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, + NFT_OSF_MAXGENRELEN); if (err < 0) return err; diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c index 5732b32ab932..0ef51c81ec94 100644 --- a/net/netfilter/nft_payload.c +++ b/net/netfilter/nft_payload.c @@ -84,7 +84,7 @@ static void nft_payload_eval(const struct nft_expr *expr, switch (priv->base) { case NFT_PAYLOAD_LL_HEADER: - if (!skb_mac_header_was_set(skb)) + if (!skb_mac_header_was_set(skb) || skb_mac_header_len(skb) == 0) goto err; if (skb_vlan_tag_present(skb)) { @@ -135,10 +135,10 @@ static int nft_payload_init(const struct nft_ctx *ctx, priv->base = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_BASE])); priv->offset = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_OFFSET])); priv->len = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_LEN])); - priv->dreg = nft_parse_register(tb[NFTA_PAYLOAD_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, priv->len); + return nft_parse_register_store(ctx, tb[NFTA_PAYLOAD_DREG], + &priv->dreg, NULL, NFT_DATA_VALUE, + priv->len); } static int nft_payload_dump(struct sk_buff *skb, const struct nft_expr *expr) @@ -338,7 +338,6 @@ static int nft_payload_set_init(const struct nft_ctx *ctx, priv->base = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_BASE])); priv->offset = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_OFFSET])); priv->len = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_LEN])); - priv->sreg = nft_parse_register(tb[NFTA_PAYLOAD_SREG]); if (tb[NFTA_PAYLOAD_CSUM_TYPE]) csum_type = ntohl(nla_get_be32(tb[NFTA_PAYLOAD_CSUM_TYPE])); @@ -369,7 +368,8 @@ static int nft_payload_set_init(const struct nft_ctx *ctx, } priv->csum_type = csum_type; - return nft_validate_register_load(priv->sreg, priv->len); + return nft_parse_register_load(tb[NFTA_PAYLOAD_SREG], &priv->sreg, + priv->len); } static int nft_payload_set_dump(struct sk_buff *skb, const struct nft_expr *expr) diff --git a/net/netfilter/nft_queue.c b/net/netfilter/nft_queue.c index 98613658d4ac..de5f1bda9d6f 100644 --- a/net/netfilter/nft_queue.c +++ b/net/netfilter/nft_queue.c @@ -22,10 +22,10 @@ static u32 jhash_initval __read_mostly; struct nft_queue { - enum nft_registers sreg_qnum:8; - u16 queuenum; - u16 queues_total; - u16 flags; + u8 sreg_qnum; + u16 queuenum; + u16 queues_total; + u16 flags; }; static void nft_queue_eval(const struct nft_expr *expr, @@ -114,8 +114,8 @@ static int nft_queue_sreg_init(const struct nft_ctx *ctx, struct nft_queue *priv = nft_expr_priv(expr); int err; - priv->sreg_qnum = nft_parse_register(tb[NFTA_QUEUE_SREG_QNUM]); - err = nft_validate_register_load(priv->sreg_qnum, sizeof(u32)); + err = nft_parse_register_load(tb[NFTA_QUEUE_SREG_QNUM], + &priv->sreg_qnum, sizeof(u32)); if (err < 0) return err; diff --git a/net/netfilter/nft_range.c b/net/netfilter/nft_range.c index 2e1d2ec2f52a..a5f74e5b8184 100644 --- a/net/netfilter/nft_range.c +++ b/net/netfilter/nft_range.c @@ -18,7 +18,7 @@ struct nft_range_expr { struct nft_data data_from; struct nft_data data_to; - enum nft_registers sreg:8; + u8 sreg; u8 len; enum nft_range_ops op:8; }; @@ -90,8 +90,8 @@ static int nft_range_init(const struct nft_ctx *ctx, const struct nft_expr *expr goto err2; } - priv->sreg = nft_parse_register(tb[NFTA_RANGE_SREG]); - err = nft_validate_register_load(priv->sreg, desc_from.len); + err = nft_parse_register_load(tb[NFTA_RANGE_SREG], &priv->sreg, + desc_from.len); if (err < 0) goto err2; diff --git a/net/netfilter/nft_redir.c b/net/netfilter/nft_redir.c index c64cbe78dee7..08a05bd1e817 100644 --- a/net/netfilter/nft_redir.c +++ b/net/netfilter/nft_redir.c @@ -49,19 +49,15 @@ int nft_redir_init(const struct nft_ctx *ctx, plen = FIELD_SIZEOF(struct nf_nat_range, min_addr.all); if (tb[NFTA_REDIR_REG_PROTO_MIN]) { - priv->sreg_proto_min = - nft_parse_register(tb[NFTA_REDIR_REG_PROTO_MIN]); - - err = nft_validate_register_load(priv->sreg_proto_min, plen); + err = nft_parse_register_load(tb[NFTA_REDIR_REG_PROTO_MIN], + &priv->sreg_proto_min, plen); if (err < 0) return err; if (tb[NFTA_REDIR_REG_PROTO_MAX]) { - priv->sreg_proto_max = - nft_parse_register(tb[NFTA_REDIR_REG_PROTO_MAX]); - - err = nft_validate_register_load(priv->sreg_proto_max, - plen); + err = nft_parse_register_load(tb[NFTA_REDIR_REG_PROTO_MAX], + &priv->sreg_proto_max, + plen); if (err < 0) return err; } else { diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c index 76dba9f6b6f6..edce109ef4b0 100644 --- a/net/netfilter/nft_rt.c +++ b/net/netfilter/nft_rt.c @@ -18,7 +18,7 @@ struct nft_rt { enum nft_rt_keys key:8; - enum nft_registers dreg:8; + u8 dreg; }; static u16 get_tcpmss(const struct nft_pktinfo *pkt, const struct dst_entry *skbdst) @@ -134,9 +134,8 @@ static int nft_rt_get_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - priv->dreg = nft_parse_register(tb[NFTA_RT_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + return nft_parse_register_store(ctx, tb[NFTA_RT_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, len); } static int nft_rt_get_dump(struct sk_buff *skb, diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c index 84d317418d18..9c7ec2ec1fcf 100644 --- a/net/netfilter/nft_set_rbtree.c +++ b/net/netfilter/nft_set_rbtree.c @@ -326,6 +326,8 @@ static void *nft_rbtree_deactivate(const struct net *net, nft_rbtree_interval_end(this)) { parent = parent->rb_right; continue; + } else if (nft_set_elem_expired(&rbe->ext)) { + break; } else if (!nft_set_elem_active(&rbe->ext, genmask)) { parent = parent->rb_left; continue; @@ -375,23 +377,37 @@ static void nft_rbtree_gc(struct work_struct *work) struct nft_rbtree *priv; struct rb_node *node; struct nft_set *set; + struct net *net; + u8 genmask; priv = container_of(work, struct nft_rbtree, gc_work.work); set = nft_set_container_of(priv); + net = read_pnet(&set->net); + genmask = nft_genmask_cur(net); write_lock_bh(&priv->lock); write_seqcount_begin(&priv->count); for (node = rb_first(&priv->root); node != NULL; node = rb_next(node)) { rbe = rb_entry(node, struct nft_rbtree_elem, node); + if (!nft_set_elem_active(&rbe->ext, genmask)) + continue; + + /* elements are reversed in the rbtree for historical reasons, + * from highest to lowest value, that is why end element is + * always visited before the start element. + */ if (nft_rbtree_interval_end(rbe)) { rbe_end = rbe; continue; } if (!nft_set_elem_expired(&rbe->ext)) continue; - if (nft_set_elem_mark_busy(&rbe->ext)) + + if (nft_set_elem_mark_busy(&rbe->ext)) { + rbe_end = NULL; continue; + } if (rbe_prev) { rb_erase(&rbe_prev->node, &priv->root); diff --git a/net/netfilter/nft_socket.c b/net/netfilter/nft_socket.c index 4026ec38526f..7e4f7063f481 100644 --- a/net/netfilter/nft_socket.c +++ b/net/netfilter/nft_socket.c @@ -10,7 +10,7 @@ struct nft_socket { enum nft_socket_keys key:8; union { - enum nft_registers dreg:8; + u8 dreg; }; }; @@ -119,9 +119,8 @@ static int nft_socket_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - priv->dreg = nft_parse_register(tb[NFTA_SOCKET_DREG]); - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + return nft_parse_register_store(ctx, tb[NFTA_SOCKET_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, len); } static int nft_socket_dump(struct sk_buff *skb, diff --git a/net/netfilter/nft_tproxy.c b/net/netfilter/nft_tproxy.c index b97ab1198b03..db780b5985ab 100644 --- a/net/netfilter/nft_tproxy.c +++ b/net/netfilter/nft_tproxy.c @@ -13,9 +13,9 @@ #endif struct nft_tproxy { - enum nft_registers sreg_addr:8; - enum nft_registers sreg_port:8; - u8 family; + u8 sreg_addr; + u8 sreg_port; + u8 family; }; static void nft_tproxy_eval_v4(const struct nft_expr *expr, @@ -254,15 +254,15 @@ static int nft_tproxy_init(const struct nft_ctx *ctx, } if (tb[NFTA_TPROXY_REG_ADDR]) { - priv->sreg_addr = nft_parse_register(tb[NFTA_TPROXY_REG_ADDR]); - err = nft_validate_register_load(priv->sreg_addr, alen); + err = nft_parse_register_load(tb[NFTA_TPROXY_REG_ADDR], + &priv->sreg_addr, alen); if (err < 0) return err; } if (tb[NFTA_TPROXY_REG_PORT]) { - priv->sreg_port = nft_parse_register(tb[NFTA_TPROXY_REG_PORT]); - err = nft_validate_register_load(priv->sreg_port, sizeof(u16)); + err = nft_parse_register_load(tb[NFTA_TPROXY_REG_PORT], + &priv->sreg_port, sizeof(u16)); if (err < 0) return err; } @@ -289,6 +289,13 @@ static int nft_tproxy_dump(struct sk_buff *skb, return 0; } +static int nft_tproxy_validate(const struct nft_ctx *ctx, + const struct nft_expr *expr, + const struct nft_data **data) +{ + return nft_chain_validate_hooks(ctx->chain, 1 << NF_INET_PRE_ROUTING); +} + static struct nft_expr_type nft_tproxy_type; static const struct nft_expr_ops nft_tproxy_ops = { .type = &nft_tproxy_type, @@ -296,6 +303,7 @@ static const struct nft_expr_ops nft_tproxy_ops = { .eval = nft_tproxy_eval, .init = nft_tproxy_init, .dump = nft_tproxy_dump, + .validate = nft_tproxy_validate, }; static struct nft_expr_type nft_tproxy_type __read_mostly = { diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index 3fc55c81f16a..ab69a34210a8 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -14,7 +14,7 @@ struct nft_tunnel { enum nft_tunnel_keys key:8; - enum nft_registers dreg:8; + u8 dreg; }; static void nft_tunnel_get_eval(const struct nft_expr *expr, @@ -72,10 +72,8 @@ static int nft_tunnel_get_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - priv->dreg = nft_parse_register(tb[NFTA_TUNNEL_DREG]); - - return nft_validate_register_store(ctx, priv->dreg, NULL, - NFT_DATA_VALUE, len); + return nft_parse_register_store(ctx, tb[NFTA_TUNNEL_DREG], &priv->dreg, + NULL, NFT_DATA_VALUE, len); } static int nft_tunnel_get_dump(struct sk_buff *skb, diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c index bf7bba80e24c..226a317d52a0 100644 --- a/net/netfilter/xt_osf.c +++ b/net/netfilter/xt_osf.c @@ -90,4 +90,3 @@ MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>"); MODULE_DESCRIPTION("Passive OS fingerprint matching."); MODULE_ALIAS("ipt_osf"); MODULE_ALIAS("ip6t_osf"); -MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_OSF); diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c index 46686fb73784..0c101b25cacf 100644 --- a/net/netfilter/xt_owner.c +++ b/net/netfilter/xt_owner.c @@ -76,29 +76,54 @@ owner_mt(const struct sk_buff *skb, struct xt_action_param *par) */ return false; - filp = sk->sk_socket->file; - if (filp == NULL) + read_lock_bh(&sk->sk_callback_lock); + filp = sk->sk_socket ? sk->sk_socket->file : NULL; + if (filp == NULL) { + read_unlock_bh(&sk->sk_callback_lock); return ((info->match ^ info->invert) & (XT_OWNER_UID | XT_OWNER_GID)) == 0; + } if (info->match & XT_OWNER_UID) { kuid_t uid_min = make_kuid(net->user_ns, info->uid_min); kuid_t uid_max = make_kuid(net->user_ns, info->uid_max); if ((uid_gte(filp->f_cred->fsuid, uid_min) && uid_lte(filp->f_cred->fsuid, uid_max)) ^ - !(info->invert & XT_OWNER_UID)) + !(info->invert & XT_OWNER_UID)) { + read_unlock_bh(&sk->sk_callback_lock); return false; + } } if (info->match & XT_OWNER_GID) { + unsigned int i, match = false; kgid_t gid_min = make_kgid(net->user_ns, info->gid_min); kgid_t gid_max = make_kgid(net->user_ns, info->gid_max); - if ((gid_gte(filp->f_cred->fsgid, gid_min) && - gid_lte(filp->f_cred->fsgid, gid_max)) ^ - !(info->invert & XT_OWNER_GID)) + struct group_info *gi = filp->f_cred->group_info; + + if (gid_gte(filp->f_cred->fsgid, gid_min) && + gid_lte(filp->f_cred->fsgid, gid_max)) + match = true; + + if (!match && (info->match & XT_OWNER_SUPPL_GROUPS) && gi) { + for (i = 0; i < gi->ngroups; ++i) { + kgid_t group = gi->gid[i]; + + if (gid_gte(group, gid_min) && + gid_lte(group, gid_max)) { + match = true; + break; + } + } + } + + if (match ^ !(info->invert & XT_OWNER_GID)) { + read_unlock_bh(&sk->sk_callback_lock); return false; + } } + read_unlock_bh(&sk->sk_callback_lock); return true; } diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c index cb58bc7ae30d..2dbf92346a7e 100644 --- a/net/netfilter/xt_recent.c +++ b/net/netfilter/xt_recent.c @@ -566,7 +566,7 @@ recent_mt_proc_write(struct file *file, const char __user *input, { struct recent_table *t = PDE_DATA(file_inode(file)); struct recent_entry *e; - char buf[sizeof("+b335:1d35:1e55:dead:c0de:1715:5afe:c0de")]; + char buf[sizeof("+b335:1d35:1e55:dead:c0de:1715:255.255.255.255")]; const char *c = buf; union nf_inet_addr addr = {}; u_int16_t family; diff --git a/net/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c index 2d2fa1d53ea6..05495d3f47b8 100644 --- a/net/netfilter/xt_sctp.c +++ b/net/netfilter/xt_sctp.c @@ -149,6 +149,8 @@ static int sctp_mt_check(const struct xt_mtchk_param *par) { const struct xt_sctp_info *info = par->matchinfo; + if (info->flag_count > ARRAY_SIZE(info->flag_info)) + return -EINVAL; if (info->flags & ~XT_SCTP_VALID_FLAGS) return -EINVAL; if (info->invflags & ~XT_SCTP_VALID_FLAGS) diff --git a/net/netfilter/xt_u32.c b/net/netfilter/xt_u32.c index a95b50342dbb..58ba402bc0b0 100644 --- a/net/netfilter/xt_u32.c +++ b/net/netfilter/xt_u32.c @@ -95,11 +95,32 @@ static bool u32_mt(const struct sk_buff *skb, struct xt_action_param *par) return ret ^ data->invert; } +static int u32_mt_checkentry(const struct xt_mtchk_param *par) +{ + const struct xt_u32 *data = par->matchinfo; + const struct xt_u32_test *ct; + unsigned int i; + + if (data->ntests > ARRAY_SIZE(data->tests)) + return -EINVAL; + + for (i = 0; i < data->ntests; ++i) { + ct = &data->tests[i]; + + if (ct->nnums > ARRAY_SIZE(ct->location) || + ct->nvalues > ARRAY_SIZE(ct->value)) + return -EINVAL; + } + + return 0; +} + static struct xt_match xt_u32_mt_reg __read_mostly = { .name = "u32", .revision = 0, .family = NFPROTO_UNSPEC, .match = u32_mt, + .checkentry = u32_mt_checkentry, .matchsize = sizeof(struct xt_u32), .me = THIS_MODULE, }; |