diff options
Diffstat (limited to 'net/netfilter')
38 files changed, 1242 insertions, 629 deletions
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index bbc45f8a7b2d..9b28864cc36a 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -162,6 +162,7 @@ config NF_CT_PROTO_SCTP bool 'SCTP protocol connection tracking support' depends on NETFILTER_ADVANCED default y + select LIBCRC32C help With this option enabled, the layer 3 independent connection tracking code will be able to do state tracking on SCTP connections. @@ -397,7 +398,6 @@ config NF_NAT_PROTO_SCTP bool default NF_NAT && NF_CT_PROTO_SCTP depends on NF_NAT && NF_CT_PROTO_SCTP - select LIBCRC32C config NF_NAT_AMANDA tristate @@ -467,10 +467,10 @@ config NF_TABLES_NETDEV This option enables support for the "netdev" table. config NFT_EXTHDR - tristate "Netfilter nf_tables IPv6 exthdr module" + tristate "Netfilter nf_tables exthdr module" help This option adds the "exthdr" expression that you can use to match - IPv6 extension headers. + IPv6 extension headers and tcp options. config NFT_META tristate "Netfilter nf_tables meta module" @@ -509,6 +509,12 @@ config NFT_SET_HASH This option adds the "hash" set type that is used to build one-way mappings between matchings and actions. +config NFT_SET_BITMAP + tristate "Netfilter nf_tables bitmap set module" + help + This option adds the "bitmap" set type that is used to build sets + whose keys are smaller or equal to 16 bits. + config NFT_COUNTER tristate "Netfilter nf_tables counter module" help diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile index ca30d1960f1d..c9b78e7b342f 100644 --- a/net/netfilter/Makefile +++ b/net/netfilter/Makefile @@ -7,7 +7,6 @@ nf_conntrack-$(CONFIG_NF_CONNTRACK_EVENTS) += nf_conntrack_ecache.o nf_conntrack-$(CONFIG_NF_CONNTRACK_LABELS) += nf_conntrack_labels.o nf_conntrack-$(CONFIG_NF_CT_PROTO_DCCP) += nf_conntrack_proto_dccp.o nf_conntrack-$(CONFIG_NF_CT_PROTO_SCTP) += nf_conntrack_proto_sctp.o -nf_conntrack-$(CONFIG_NF_CT_PROTO_UDPLITE) += nf_conntrack_proto_udplite.o obj-$(CONFIG_NETFILTER) = netfilter.o @@ -47,7 +46,6 @@ nf_nat-y := nf_nat_core.o nf_nat_proto_unknown.o nf_nat_proto_common.o \ # NAT protocols (nf_nat) nf_nat-$(CONFIG_NF_NAT_PROTO_DCCP) += nf_nat_proto_dccp.o nf_nat-$(CONFIG_NF_NAT_PROTO_SCTP) += nf_nat_proto_sctp.o -nf_nat-$(CONFIG_NF_NAT_PROTO_UDPLITE) += nf_nat_proto_udplite.o # generic transport layer logging obj-$(CONFIG_NF_LOG_COMMON) += nf_log_common.o @@ -95,6 +93,7 @@ obj-$(CONFIG_NFT_REJECT) += nft_reject.o obj-$(CONFIG_NFT_REJECT_INET) += nft_reject_inet.o obj-$(CONFIG_NFT_SET_RBTREE) += nft_set_rbtree.o obj-$(CONFIG_NFT_SET_HASH) += nft_set_hash.o +obj-$(CONFIG_NFT_SET_BITMAP) += nft_set_bitmap.o obj-$(CONFIG_NFT_COUNTER) += nft_counter.o obj-$(CONFIG_NFT_LOG) += nft_log.o obj-$(CONFIG_NFT_MASQ) += nft_masq.o diff --git a/net/netfilter/core.c b/net/netfilter/core.c index ce6adfae521a..a87a6f8a74d8 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -375,7 +375,7 @@ void nf_ct_attach(struct sk_buff *new, const struct sk_buff *skb) { void (*attach)(struct sk_buff *, const struct sk_buff *); - if (skb->nfct) { + if (skb->_nfct) { rcu_read_lock(); attach = rcu_dereference(ip_ct_attach); if (attach) diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 55e0169caa4c..5aeb0dde6ccc 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -426,10 +426,9 @@ ip_vs_service_find(struct netns_ipvs *ipvs, int af, __u32 fwmark, __u16 protocol */ svc = __ip_vs_service_find(ipvs, af, protocol, vaddr, vport); - if (svc == NULL - && protocol == IPPROTO_TCP - && atomic_read(&ipvs->ftpsvc_counter) - && (vport == FTPDATA || ntohs(vport) >= PROT_SOCK)) { + if (!svc && protocol == IPPROTO_TCP && + atomic_read(&ipvs->ftpsvc_counter) && + (vport == FTPDATA || ntohs(vport) >= inet_prot_sock(ipvs->net))) { /* * Check if ftp service entry exists, the packet * might belong to FTP data connections. @@ -711,7 +710,6 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, int dest_af, dest->vport == svc->port))) { /* HIT */ list_del(&dest->t_list); - ip_vs_dest_hold(dest); goto out; } } @@ -741,7 +739,7 @@ static void ip_vs_dest_free(struct ip_vs_dest *dest) * When the ip_vs_control_clearup is activated by ipvs module exit, * the service tables must have been flushed and all the connections * are expired, and the refcnt of each destination in the trash must - * be 0, so we simply release them here. + * be 1, so we simply release them here. */ static void ip_vs_trash_cleanup(struct netns_ipvs *ipvs) { @@ -1080,11 +1078,10 @@ static void __ip_vs_del_dest(struct netns_ipvs *ipvs, struct ip_vs_dest *dest, if (list_empty(&ipvs->dest_trash) && !cleanup) mod_timer(&ipvs->dest_trash_timer, jiffies + (IP_VS_DEST_TRASH_PERIOD >> 1)); - /* dest lives in trash without reference */ + /* dest lives in trash with reference */ list_add(&dest->t_list, &ipvs->dest_trash); dest->idle_start = 0; spin_unlock_bh(&ipvs->dest_trash_lock); - ip_vs_dest_put(dest); } @@ -1160,7 +1157,7 @@ static void ip_vs_dest_trash_expire(unsigned long data) spin_lock(&ipvs->dest_trash_lock); list_for_each_entry_safe(dest, next, &ipvs->dest_trash, t_list) { - if (atomic_read(&dest->refcnt) > 0) + if (atomic_read(&dest->refcnt) > 1) continue; if (dest->idle_start) { if (time_before(now, dest->idle_start + diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 4e8083c5e01d..071b97fcbefb 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -350,16 +350,31 @@ static void nf_ct_del_from_dying_or_unconfirmed_list(struct nf_conn *ct) spin_unlock(&pcpu->lock); } +#define NFCT_ALIGN(len) (((len) + NFCT_INFOMASK) & ~NFCT_INFOMASK) + /* Released via destroy_conntrack() */ struct nf_conn *nf_ct_tmpl_alloc(struct net *net, const struct nf_conntrack_zone *zone, gfp_t flags) { - struct nf_conn *tmpl; + struct nf_conn *tmpl, *p; - tmpl = kzalloc(sizeof(*tmpl), flags); - if (tmpl == NULL) - return NULL; + if (ARCH_KMALLOC_MINALIGN <= NFCT_INFOMASK) { + tmpl = kzalloc(sizeof(*tmpl) + NFCT_INFOMASK, flags); + if (!tmpl) + return NULL; + + p = tmpl; + tmpl = (struct nf_conn *)NFCT_ALIGN((unsigned long)p); + if (tmpl != p) { + tmpl = (struct nf_conn *)NFCT_ALIGN((unsigned long)p); + tmpl->proto.tmpl_padto = (char *)tmpl - (char *)p; + } + } else { + tmpl = kzalloc(sizeof(*tmpl), flags); + if (!tmpl) + return NULL; + } tmpl->status = IPS_TEMPLATE; write_pnet(&tmpl->ct_net, net); @@ -374,7 +389,11 @@ void nf_ct_tmpl_free(struct nf_conn *tmpl) { nf_ct_ext_destroy(tmpl); nf_ct_ext_free(tmpl); - kfree(tmpl); + + if (ARCH_KMALLOC_MINALIGN <= NFCT_INFOMASK) + kfree((char *)tmpl - tmpl->proto.tmpl_padto); + else + kfree(tmpl); } EXPORT_SYMBOL_GPL(nf_ct_tmpl_free); @@ -686,12 +705,12 @@ static int nf_ct_resolve_clash(struct net *net, struct sk_buff *skb, !nfct_nat(ct) && !nf_ct_is_dying(ct) && atomic_inc_not_zero(&ct->ct_general.use)) { - nf_ct_acct_merge(ct, ctinfo, (struct nf_conn *)skb->nfct); - nf_conntrack_put(skb->nfct); - /* Assign conntrack already in hashes to this skbuff. Don't - * modify skb->nfctinfo to ensure consistent stateful filtering. - */ - skb->nfct = &ct->ct_general; + enum ip_conntrack_info oldinfo; + struct nf_conn *loser_ct = nf_ct_get(skb, &oldinfo); + + nf_ct_acct_merge(ct, ctinfo, loser_ct); + nf_conntrack_put(&loser_ct->ct_general); + nf_ct_set(skb, ct, oldinfo); return NF_ACCEPT; } NF_CT_STAT_INC(net, drop); @@ -1218,7 +1237,7 @@ init_conntrack(struct net *net, struct nf_conn *tmpl, return &ct->tuplehash[IP_CT_DIR_ORIGINAL]; } -/* On success, returns conntrack ptr, sets skb->nfct and ctinfo */ +/* On success, returns conntrack ptr, sets skb->_nfct | ctinfo */ static inline struct nf_conn * resolve_normal_ct(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb, @@ -1277,8 +1296,7 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl, } *set_reply = 0; } - skb->nfct = &ct->ct_general; - skb->nfctinfo = *ctinfo; + nf_ct_set(skb, ct, *ctinfo); return ct; } @@ -1286,7 +1304,7 @@ unsigned int nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, struct sk_buff *skb) { - struct nf_conn *ct, *tmpl = NULL; + struct nf_conn *ct, *tmpl; enum ip_conntrack_info ctinfo; struct nf_conntrack_l3proto *l3proto; struct nf_conntrack_l4proto *l4proto; @@ -1296,14 +1314,14 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, int set_reply = 0; int ret; - if (skb->nfct) { + tmpl = nf_ct_get(skb, &ctinfo); + if (tmpl) { /* Previously seen (loopback or untracked)? Ignore. */ - tmpl = (struct nf_conn *)skb->nfct; if (!nf_ct_is_template(tmpl)) { NF_CT_STAT_INC_ATOMIC(net, ignore); return NF_ACCEPT; } - skb->nfct = NULL; + skb->_nfct = 0; } /* rcu_read_lock()ed by nf_hook_thresh */ @@ -1324,8 +1342,7 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, * inverse of the return code tells to the netfilter * core what to do with the packet. */ if (l4proto->error != NULL) { - ret = l4proto->error(net, tmpl, skb, dataoff, &ctinfo, - pf, hooknum); + ret = l4proto->error(net, tmpl, skb, dataoff, pf, hooknum); if (ret <= 0) { NF_CT_STAT_INC_ATOMIC(net, error); NF_CT_STAT_INC_ATOMIC(net, invalid); @@ -1333,7 +1350,7 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, goto out; } /* ICMP[v6] protocol trackers may assign one conntrack. */ - if (skb->nfct) + if (skb->_nfct) goto out; } repeat: @@ -1353,7 +1370,7 @@ repeat: goto out; } - NF_CT_ASSERT(skb->nfct); + NF_CT_ASSERT(skb_nfct(skb)); /* Decide what timeout policy we want to apply to this flow. */ timeouts = nf_ct_timeout_lookup(net, ct, l4proto); @@ -1363,8 +1380,8 @@ repeat: /* Invalid: inverse of the return code tells * the netfilter core what to do */ pr_debug("nf_conntrack_in: Can't track with proto module\n"); - nf_conntrack_put(skb->nfct); - skb->nfct = NULL; + nf_conntrack_put(&ct->ct_general); + skb->_nfct = 0; NF_CT_STAT_INC_ATOMIC(net, invalid); if (ret == -NF_DROP) NF_CT_STAT_INC_ATOMIC(net, drop); @@ -1522,9 +1539,8 @@ static void nf_conntrack_attach(struct sk_buff *nskb, const struct sk_buff *skb) ctinfo = IP_CT_RELATED; /* Attach to new skbuff, and increment count */ - nskb->nfct = &ct->ct_general; - nskb->nfctinfo = ctinfo; - nf_conntrack_get(nskb->nfct); + nf_ct_set(nskb, ct, ctinfo); + nf_conntrack_get(skb_nfct(nskb)); } /* Bring out ya dead! */ @@ -1860,7 +1876,8 @@ int nf_conntrack_init_start(void) nf_conntrack_max = max_factor * nf_conntrack_htable_size; nf_conntrack_cachep = kmem_cache_create("nf_conntrack", - sizeof(struct nf_conn), 0, + sizeof(struct nf_conn), + NFCT_INFOMASK + 1, SLAB_DESTROY_BY_RCU | SLAB_HWCACHE_ALIGN, NULL); if (!nf_conntrack_cachep) goto err_cachep; diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index f8dbacf66795..e19a69787d99 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -353,7 +353,7 @@ void nf_ct_expect_put(struct nf_conntrack_expect *exp) } EXPORT_SYMBOL_GPL(nf_ct_expect_put); -static int nf_ct_expect_insert(struct nf_conntrack_expect *exp) +static void nf_ct_expect_insert(struct nf_conntrack_expect *exp) { struct nf_conn_help *master_help = nfct_help(exp->master); struct nf_conntrack_helper *helper; @@ -380,7 +380,6 @@ static int nf_ct_expect_insert(struct nf_conntrack_expect *exp) add_timer(&exp->timeout); NF_CT_STAT_INC(net, expect_create); - return 0; } /* Race with expectations being used means we could have none to find; OK. */ @@ -464,9 +463,8 @@ int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, if (ret <= 0) goto out; - ret = nf_ct_expect_insert(expect); - if (ret < 0) - goto out; + nf_ct_expect_insert(expect); + spin_unlock_bh(&nf_conntrack_expect_lock); nf_ct_expect_event_report(IPEXP_NEW, expect, portid, report); return ret; diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index b68ce6ac13b3..93dd1c5b7bff 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -561,7 +561,6 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb, static int dccp_error(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb, unsigned int dataoff, - enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum) { struct dccp_hdr _dh, *dh; diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index a0efde38da44..33279aab583d 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -22,7 +22,9 @@ #include <linux/seq_file.h> #include <linux/spinlock.h> #include <linux/interrupt.h> +#include <net/sctp/checksum.h> +#include <net/netfilter/nf_log.h> #include <net/netfilter/nf_conntrack.h> #include <net/netfilter/nf_conntrack_l4proto.h> #include <net/netfilter/nf_conntrack_ecache.h> @@ -505,6 +507,34 @@ static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb, return true; } +static int sctp_error(struct net *net, struct nf_conn *tpl, struct sk_buff *skb, + unsigned int dataoff, + u8 pf, unsigned int hooknum) +{ + const struct sctphdr *sh; + struct sctphdr _sctph; + const char *logmsg; + + sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph); + if (!sh) { + logmsg = "nf_ct_sctp: short packet "; + goto out_invalid; + } + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && + skb->ip_summed == CHECKSUM_NONE) { + if (sh->checksum != sctp_compute_cksum(skb, dataoff)) { + logmsg = "nf_ct_sctp: bad CRC "; + goto out_invalid; + } + skb->ip_summed = CHECKSUM_UNNECESSARY; + } + return NF_ACCEPT; +out_invalid: + if (LOG_INVALID(net, IPPROTO_SCTP)) + nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL, "%s", logmsg); + return -NF_ACCEPT; +} + #if IS_ENABLED(CONFIG_NF_CT_NETLINK) #include <linux/netfilter/nfnetlink.h> @@ -752,6 +782,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = { .packet = sctp_packet, .get_timeouts = sctp_get_timeouts, .new = sctp_new, + .error = sctp_error, .me = THIS_MODULE, #if IS_ENABLED(CONFIG_NF_CT_NETLINK) .to_nlattr = sctp_to_nlattr, @@ -786,6 +817,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = { .packet = sctp_packet, .get_timeouts = sctp_get_timeouts, .new = sctp_new, + .error = sctp_error, .me = THIS_MODULE, #if IS_ENABLED(CONFIG_NF_CT_NETLINK) .to_nlattr = sctp_to_nlattr, diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 69f687740c76..b122e9dacfed 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -750,7 +750,6 @@ static const u8 tcp_valid_flags[(TCPHDR_FIN|TCPHDR_SYN|TCPHDR_RST|TCPHDR_ACK| static int tcp_error(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb, unsigned int dataoff, - enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum) { diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c index 20f35ed68030..f6ebce6178ca 100644 --- a/net/netfilter/nf_conntrack_proto_udp.c +++ b/net/netfilter/nf_conntrack_proto_udp.c @@ -108,8 +108,60 @@ static bool udp_new(struct nf_conn *ct, const struct sk_buff *skb, return true; } +#ifdef CONFIG_NF_CT_PROTO_UDPLITE +static int udplite_error(struct net *net, struct nf_conn *tmpl, + struct sk_buff *skb, + unsigned int dataoff, + u8 pf, unsigned int hooknum) +{ + unsigned int udplen = skb->len - dataoff; + const struct udphdr *hdr; + struct udphdr _hdr; + unsigned int cscov; + + /* Header is too small? */ + hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr); + if (!hdr) { + if (LOG_INVALID(net, IPPROTO_UDPLITE)) + nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL, + "nf_ct_udplite: short packet "); + return -NF_ACCEPT; + } + + cscov = ntohs(hdr->len); + if (cscov == 0) { + cscov = udplen; + } else if (cscov < sizeof(*hdr) || cscov > udplen) { + if (LOG_INVALID(net, IPPROTO_UDPLITE)) + nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL, + "nf_ct_udplite: invalid checksum coverage "); + return -NF_ACCEPT; + } + + /* UDPLITE mandates checksums */ + if (!hdr->check) { + if (LOG_INVALID(net, IPPROTO_UDPLITE)) + nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL, + "nf_ct_udplite: checksum missing "); + return -NF_ACCEPT; + } + + /* Checksum invalid? Ignore. */ + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && + nf_checksum_partial(skb, hooknum, dataoff, cscov, IPPROTO_UDP, + pf)) { + if (LOG_INVALID(net, IPPROTO_UDPLITE)) + nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL, + "nf_ct_udplite: bad UDPLite checksum "); + return -NF_ACCEPT; + } + + return NF_ACCEPT; +} +#endif + static int udp_error(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb, - unsigned int dataoff, enum ip_conntrack_info *ctinfo, + unsigned int dataoff, u_int8_t pf, unsigned int hooknum) { @@ -290,6 +342,41 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly = }; EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp4); +#ifdef CONFIG_NF_CT_PROTO_UDPLITE +struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 __read_mostly = +{ + .l3proto = PF_INET, + .l4proto = IPPROTO_UDPLITE, + .name = "udplite", + .allow_clash = true, + .pkt_to_tuple = udp_pkt_to_tuple, + .invert_tuple = udp_invert_tuple, + .print_tuple = udp_print_tuple, + .packet = udp_packet, + .get_timeouts = udp_get_timeouts, + .new = udp_new, + .error = udplite_error, +#if IS_ENABLED(CONFIG_NF_CT_NETLINK) + .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, + .nla_policy = nf_ct_port_nla_policy, +#endif +#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT) + .ctnl_timeout = { + .nlattr_to_obj = udp_timeout_nlattr_to_obj, + .obj_to_nlattr = udp_timeout_obj_to_nlattr, + .nlattr_max = CTA_TIMEOUT_UDP_MAX, + .obj_size = sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX, + .nla_policy = udp_timeout_nla_policy, + }, +#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ + .init_net = udp_init_net, + .get_net_proto = udp_get_net_proto, +}; +EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udplite4); +#endif + struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly = { .l3proto = PF_INET6, @@ -322,3 +409,38 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly = .get_net_proto = udp_get_net_proto, }; EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp6); + +#ifdef CONFIG_NF_CT_PROTO_UDPLITE +struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 __read_mostly = +{ + .l3proto = PF_INET6, + .l4proto = IPPROTO_UDPLITE, + .name = "udplite", + .allow_clash = true, + .pkt_to_tuple = udp_pkt_to_tuple, + .invert_tuple = udp_invert_tuple, + .print_tuple = udp_print_tuple, + .packet = udp_packet, + .get_timeouts = udp_get_timeouts, + .new = udp_new, + .error = udplite_error, +#if IS_ENABLED(CONFIG_NF_CT_NETLINK) + .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, + .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, + .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, + .nla_policy = nf_ct_port_nla_policy, +#endif +#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT) + .ctnl_timeout = { + .nlattr_to_obj = udp_timeout_nlattr_to_obj, + .obj_to_nlattr = udp_timeout_obj_to_nlattr, + .nlattr_max = CTA_TIMEOUT_UDP_MAX, + .obj_size = sizeof(unsigned int) * CTA_TIMEOUT_UDP_MAX, + .nla_policy = udp_timeout_nla_policy, + }, +#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ + .init_net = udp_init_net, + .get_net_proto = udp_get_net_proto, +}; +EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udplite6); +#endif diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c deleted file mode 100644 index c35f7bf05d8c..000000000000 --- a/net/netfilter/nf_conntrack_proto_udplite.c +++ /dev/null @@ -1,324 +0,0 @@ -/* (C) 1999-2001 Paul `Rusty' Russell - * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> - * (C) 2007 Patrick McHardy <kaber@trash.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/types.h> -#include <linux/timer.h> -#include <linux/udp.h> -#include <linux/seq_file.h> -#include <linux/skbuff.h> -#include <linux/ipv6.h> -#include <net/ip6_checksum.h> -#include <net/checksum.h> - -#include <linux/netfilter.h> -#include <linux/netfilter_ipv4.h> -#include <linux/netfilter_ipv6.h> -#include <net/netfilter/nf_conntrack_l4proto.h> -#include <net/netfilter/nf_conntrack_ecache.h> -#include <net/netfilter/nf_log.h> - -static unsigned int udplite_timeouts[UDPLITE_CT_MAX] = { - [UDPLITE_CT_UNREPLIED] = 30*HZ, - [UDPLITE_CT_REPLIED] = 180*HZ, -}; - -static inline struct nf_udplite_net *udplite_pernet(struct net *net) -{ - return &net->ct.nf_ct_proto.udplite; -} - -static bool udplite_pkt_to_tuple(const struct sk_buff *skb, - unsigned int dataoff, - struct net *net, - struct nf_conntrack_tuple *tuple) -{ - const struct udphdr *hp; - struct udphdr _hdr; - - /* Actually only need first 4 bytes to get ports. */ - hp = skb_header_pointer(skb, dataoff, 4, &_hdr); - if (hp == NULL) - return false; - - tuple->src.u.udp.port = hp->source; - tuple->dst.u.udp.port = hp->dest; - return true; -} - -static bool udplite_invert_tuple(struct nf_conntrack_tuple *tuple, - const struct nf_conntrack_tuple *orig) -{ - tuple->src.u.udp.port = orig->dst.u.udp.port; - tuple->dst.u.udp.port = orig->src.u.udp.port; - return true; -} - -/* Print out the per-protocol part of the tuple. */ -static void udplite_print_tuple(struct seq_file *s, - const struct nf_conntrack_tuple *tuple) -{ - seq_printf(s, "sport=%hu dport=%hu ", - ntohs(tuple->src.u.udp.port), - ntohs(tuple->dst.u.udp.port)); -} - -static unsigned int *udplite_get_timeouts(struct net *net) -{ - return udplite_pernet(net)->timeouts; -} - -/* Returns verdict for packet, and may modify conntracktype */ -static int udplite_packet(struct nf_conn *ct, - const struct sk_buff *skb, - unsigned int dataoff, - enum ip_conntrack_info ctinfo, - u_int8_t pf, - unsigned int hooknum, - unsigned int *timeouts) -{ - /* If we've seen traffic both ways, this is some kind of UDP - stream. Extend timeout. */ - if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) { - nf_ct_refresh_acct(ct, ctinfo, skb, - timeouts[UDPLITE_CT_REPLIED]); - /* Also, more likely to be important, and not a probe */ - if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) - nf_conntrack_event_cache(IPCT_ASSURED, ct); - } else { - nf_ct_refresh_acct(ct, ctinfo, skb, - timeouts[UDPLITE_CT_UNREPLIED]); - } - return NF_ACCEPT; -} - -/* Called when a new connection for this protocol found. */ -static bool udplite_new(struct nf_conn *ct, const struct sk_buff *skb, - unsi |