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-rw-r--r--include/linux/inetdevice.h36
-rw-r--r--include/linux/ipv6.h1
-rw-r--r--include/linux/mm_types.h1
-rw-r--r--include/linux/netfilter.h9
-rw-r--r--include/linux/sched.h1
-rw-r--r--include/net/ip6_route.h2
-rw-r--r--include/net/netfilter/nf_conntrack_extend.h6
-rw-r--r--include/net/netfilter/nf_conntrack_seqadj.h51
-rw-r--r--include/net/netfilter/nf_conntrack_synproxy.h77
-rw-r--r--include/net/netfilter/nf_nat.h10
-rw-r--r--include/net/netfilter/nf_nat_helper.h19
-rw-r--r--include/net/tcp.h8
-rw-r--r--include/uapi/linux/ip.h36
-rw-r--r--include/uapi/linux/netfilter/nf_conntrack_common.h3
-rw-r--r--include/uapi/linux/netfilter/nfnetlink_conntrack.h15
-rw-r--r--include/uapi/linux/netfilter/xt_SYNPROXY.h16
16 files changed, 217 insertions, 74 deletions
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index c796ce26c7c0..79640e015a86 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -5,47 +5,13 @@
#include <linux/bitmap.h>
#include <linux/if.h>
+#include <linux/ip.h>
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
#include <linux/timer.h>
#include <linux/sysctl.h>
#include <linux/rtnetlink.h>
-enum
-{
- IPV4_DEVCONF_FORWARDING=1,
- IPV4_DEVCONF_MC_FORWARDING,
- IPV4_DEVCONF_PROXY_ARP,
- IPV4_DEVCONF_ACCEPT_REDIRECTS,
- IPV4_DEVCONF_SECURE_REDIRECTS,
- IPV4_DEVCONF_SEND_REDIRECTS,
- IPV4_DEVCONF_SHARED_MEDIA,
- IPV4_DEVCONF_RP_FILTER,
- IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
- IPV4_DEVCONF_BOOTP_RELAY,
- IPV4_DEVCONF_LOG_MARTIANS,
- IPV4_DEVCONF_TAG,
- IPV4_DEVCONF_ARPFILTER,
- IPV4_DEVCONF_MEDIUM_ID,
- IPV4_DEVCONF_FORCE_IGMP_VERSION,
- IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
- IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
- IPV4_DEVCONF_NOXFRM,
- IPV4_DEVCONF_NOPOLICY,
- IPV4_DEVCONF_ARP_ANNOUNCE,
- IPV4_DEVCONF_ARP_IGNORE,
- IPV4_DEVCONF_PROMOTE_SECONDARIES,
- IPV4_DEVCONF_ARP_ACCEPT,
- IPV4_DEVCONF_ARP_NOTIFY,
- IPV4_DEVCONF_ACCEPT_LOCAL,
- IPV4_DEVCONF_SRC_VMARK,
- IPV4_DEVCONF_PROXY_ARP_PVLAN,
- IPV4_DEVCONF_ROUTE_LOCALNET,
- __IPV4_DEVCONF_MAX
-};
-
-#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
-
struct ipv4_devconf {
void *sysctl;
int data[IPV4_DEVCONF_MAX];
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 77a478462d8e..9ac5047062c8 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -103,6 +103,7 @@ struct inet6_skb_parm {
#define IP6SKB_FORWARDED 2
#define IP6SKB_REROUTED 4
#define IP6SKB_ROUTERALERT 8
+#define IP6SKB_FRAGMENTED 16
};
#define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index fb425aa16c01..faf4b7c1ad12 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -332,6 +332,7 @@ struct mm_struct {
unsigned long pgoff, unsigned long flags);
#endif
unsigned long mmap_base; /* base of mmap area */
+ unsigned long mmap_legacy_base; /* base of mmap area in bottom-up allocations */
unsigned long task_size; /* size of task vm space */
unsigned long highest_vm_end; /* highest vma end address */
pgd_t * pgd;
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index e2cf786be22f..708fe72ab913 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -319,6 +319,7 @@ extern void nf_ct_attach(struct sk_buff *, const struct sk_buff *);
extern void (*nf_ct_destroy)(struct nf_conntrack *) __rcu;
struct nf_conn;
+enum ip_conntrack_info;
struct nlattr;
struct nfq_ct_hook {
@@ -327,14 +328,10 @@ struct nfq_ct_hook {
int (*parse)(const struct nlattr *attr, struct nf_conn *ct);
int (*attach_expect)(const struct nlattr *attr, struct nf_conn *ct,
u32 portid, u32 report);
-};
-extern struct nfq_ct_hook __rcu *nfq_ct_hook;
-
-struct nfq_ct_nat_hook {
void (*seq_adjust)(struct sk_buff *skb, struct nf_conn *ct,
- u32 ctinfo, s32 off);
+ enum ip_conntrack_info ctinfo, s32 off);
};
-extern struct nfq_ct_nat_hook __rcu *nfq_ct_nat_hook;
+extern struct nfq_ct_hook __rcu *nfq_ct_hook;
#else
static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {}
#endif
diff --git a/include/linux/sched.h b/include/linux/sched.h
index e9995eb5985c..078066daffd4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -314,7 +314,6 @@ struct nsproxy;
struct user_namespace;
#ifdef CONFIG_MMU
-extern unsigned long mmap_legacy_base(void);
extern void arch_pick_mmap_layout(struct mm_struct *mm);
extern unsigned long
arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 260f83f16bcf..f667248202b6 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -135,6 +135,8 @@ extern void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu,
extern void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk,
__be32 mtu);
extern void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark);
+extern void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
+ u32 mark);
extern void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk);
struct netlink_callback;
diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
index 977bc8a46444..ff95434e50ca 100644
--- a/include/net/netfilter/nf_conntrack_extend.h
+++ b/include/net/netfilter/nf_conntrack_extend.h
@@ -10,6 +10,7 @@ enum nf_ct_ext_id {
#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
NF_CT_EXT_NAT,
#endif
+ NF_CT_EXT_SEQADJ,
NF_CT_EXT_ACCT,
#ifdef CONFIG_NF_CONNTRACK_EVENTS
NF_CT_EXT_ECACHE,
@@ -26,17 +27,22 @@ enum nf_ct_ext_id {
#ifdef CONFIG_NF_CONNTRACK_LABELS
NF_CT_EXT_LABELS,
#endif
+#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
+ NF_CT_EXT_SYNPROXY,
+#endif
NF_CT_EXT_NUM,
};
#define NF_CT_EXT_HELPER_TYPE struct nf_conn_help
#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat
+#define NF_CT_EXT_SEQADJ_TYPE struct nf_conn_seqadj
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_counter
#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache
#define NF_CT_EXT_ZONE_TYPE struct nf_conntrack_zone
#define NF_CT_EXT_TSTAMP_TYPE struct nf_conn_tstamp
#define NF_CT_EXT_TIMEOUT_TYPE struct nf_conn_timeout
#define NF_CT_EXT_LABELS_TYPE struct nf_conn_labels
+#define NF_CT_EXT_SYNPROXY_TYPE struct nf_conn_synproxy
/* Extensions: optional stuff which isn't permanently in struct. */
struct nf_ct_ext {
diff --git a/include/net/netfilter/nf_conntrack_seqadj.h b/include/net/netfilter/nf_conntrack_seqadj.h
new file mode 100644
index 000000000000..f6177a5fe0ca
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_seqadj.h
@@ -0,0 +1,51 @@
+#ifndef _NF_CONNTRACK_SEQADJ_H
+#define _NF_CONNTRACK_SEQADJ_H
+
+#include <net/netfilter/nf_conntrack_extend.h>
+
+/**
+ * struct nf_ct_seqadj - sequence number adjustment information
+ *
+ * @correction_pos: position of the last TCP sequence number modification
+ * @offset_before: sequence number offset before last modification
+ * @offset_after: sequence number offset after last modification
+ */
+struct nf_ct_seqadj {
+ u32 correction_pos;
+ s32 offset_before;
+ s32 offset_after;
+};
+
+struct nf_conn_seqadj {
+ struct nf_ct_seqadj seq[IP_CT_DIR_MAX];
+};
+
+static inline struct nf_conn_seqadj *nfct_seqadj(const struct nf_conn *ct)
+{
+ return nf_ct_ext_find(ct, NF_CT_EXT_SEQADJ);
+}
+
+static inline struct nf_conn_seqadj *nfct_seqadj_ext_add(struct nf_conn *ct)
+{
+ return nf_ct_ext_add(ct, NF_CT_EXT_SEQADJ, GFP_ATOMIC);
+}
+
+extern int nf_ct_seqadj_init(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+ s32 off);
+extern int nf_ct_seqadj_set(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+ __be32 seq, s32 off);
+extern void nf_ct_tcp_seqadj_set(struct sk_buff *skb,
+ struct nf_conn *ct,
+ enum ip_conntrack_info ctinfo,
+ s32 off);
+
+extern int nf_ct_seq_adjust(struct sk_buff *skb,
+ struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+ unsigned int protoff);
+extern s32 nf_ct_seq_offset(const struct nf_conn *ct, enum ip_conntrack_dir,
+ u32 seq);
+
+extern int nf_conntrack_seqadj_init(void);
+extern void nf_conntrack_seqadj_fini(void);
+
+#endif /* _NF_CONNTRACK_SEQADJ_H */
diff --git a/include/net/netfilter/nf_conntrack_synproxy.h b/include/net/netfilter/nf_conntrack_synproxy.h
new file mode 100644
index 000000000000..806f54a290d6
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_synproxy.h
@@ -0,0 +1,77 @@
+#ifndef _NF_CONNTRACK_SYNPROXY_H
+#define _NF_CONNTRACK_SYNPROXY_H
+
+#include <net/netns/generic.h>
+
+struct nf_conn_synproxy {
+ u32 isn;
+ u32 its;
+ u32 tsoff;
+};
+
+static inline struct nf_conn_synproxy *nfct_synproxy(const struct nf_conn *ct)
+{
+#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
+ return nf_ct_ext_find(ct, NF_CT_EXT_SYNPROXY);
+#else
+ return NULL;
+#endif
+}
+
+static inline struct nf_conn_synproxy *nfct_synproxy_ext_add(struct nf_conn *ct)
+{
+#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
+ return nf_ct_ext_add(ct, NF_CT_EXT_SYNPROXY, GFP_ATOMIC);
+#else
+ return NULL;
+#endif
+}
+
+struct synproxy_stats {
+ unsigned int syn_received;
+ unsigned int cookie_invalid;
+ unsigned int cookie_valid;
+ unsigned int cookie_retrans;
+ unsigned int conn_reopened;
+};
+
+struct synproxy_net {
+ struct nf_conn *tmpl;
+ struct synproxy_stats __percpu *stats;
+};
+
+extern int synproxy_net_id;
+static inline struct synproxy_net *synproxy_pernet(struct net *net)
+{
+ return net_generic(net, synproxy_net_id);
+}
+
+struct synproxy_options {
+ u8 options;
+ u8 wscale;
+ u16 mss;
+ u32 tsval;
+ u32 tsecr;
+};
+
+struct tcphdr;
+struct xt_synproxy_info;
+extern void synproxy_parse_options(const struct sk_buff *skb, unsigned int doff,
+ const struct tcphdr *th,
+ struct synproxy_options *opts);
+extern unsigned int synproxy_options_size(const struct synproxy_options *opts);
+extern void synproxy_build_options(struct tcphdr *th,
+ const struct synproxy_options *opts);
+
+extern void synproxy_init_timestamp_cookie(const struct xt_synproxy_info *info,
+ struct synproxy_options *opts);
+extern void synproxy_check_timestamp_cookie(struct synproxy_options *opts);
+
+extern unsigned int synproxy_tstamp_adjust(struct sk_buff *skb,
+ unsigned int protoff,
+ struct tcphdr *th,
+ struct nf_conn *ct,
+ enum ip_conntrack_info ctinfo,
+ const struct nf_conn_synproxy *synproxy);
+
+#endif /* _NF_CONNTRACK_SYNPROXY_H */
diff --git a/include/net/netfilter/nf_nat.h b/include/net/netfilter/nf_nat.h
index e2441413675c..59a192420053 100644
--- a/include/net/netfilter/nf_nat.h
+++ b/include/net/netfilter/nf_nat.h
@@ -13,15 +13,6 @@ enum nf_nat_manip_type {
#define HOOK2MANIP(hooknum) ((hooknum) != NF_INET_POST_ROUTING && \
(hooknum) != NF_INET_LOCAL_IN)
-/* NAT sequence number modifications */
-struct nf_nat_seq {
- /* position of the last TCP sequence number modification (if any) */
- u_int32_t correction_pos;
-
- /* sequence number offset before and after last modification */
- int32_t offset_before, offset_after;
-};
-
#include <linux/list.h>
#include <linux/netfilter/nf_conntrack_pptp.h>
#include <net/netfilter/nf_conntrack_extend.h>
@@ -39,7 +30,6 @@ struct nf_conn;
/* The structure embedded in the conntrack structure. */
struct nf_conn_nat {
struct hlist_node bysource;
- struct nf_nat_seq seq[IP_CT_DIR_MAX];
struct nf_conn *ct;
union nf_conntrack_nat_help help;
#if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
diff --git a/include/net/netfilter/nf_nat_helper.h b/include/net/netfilter/nf_nat_helper.h
index 194c34794923..404324d1d0c4 100644
--- a/include/net/netfilter/nf_nat_helper.h
+++ b/include/net/netfilter/nf_nat_helper.h
@@ -39,28 +39,9 @@ extern int nf_nat_mangle_udp_packet(struct sk_buff *skb,
const char *rep_buffer,
unsigned int rep_len);
-extern void nf_nat_set_seq_adjust(struct nf_conn *ct,
- enum ip_conntrack_info ctinfo,
- __be32 seq, s32 off);
-extern int nf_nat_seq_adjust(struct sk_buff *skb,
- struct nf_conn *ct,
- enum ip_conntrack_info ctinfo,
- unsigned int protoff);
-extern int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb,
- struct nf_conn *ct,
- enum ip_conntrack_info ctinfo,
- unsigned int protoff);
-
/* Setup NAT on this expected conntrack so it follows master, but goes
* to port ct->master->saved_proto. */
extern void nf_nat_follow_master(struct nf_conn *ct,
struct nf_conntrack_expect *this);
-extern s32 nf_nat_get_offset(const struct nf_conn *ct,
- enum ip_conntrack_dir dir,
- u32 seq);
-
-extern void nf_nat_tcp_seq_adjust(struct sk_buff *skb, struct nf_conn *ct,
- u32 dir, s32 off);
-
#endif
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 09cb5c11ceea..dd5e16f66f84 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -476,9 +476,13 @@ void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb);
/* From syncookies.c */
extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];
+extern int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th,
+ u32 cookie);
extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
struct ip_options *opt);
#ifdef CONFIG_SYN_COOKIES
+extern u32 __cookie_v4_init_sequence(const struct iphdr *iph,
+ const struct tcphdr *th, u16 *mssp);
extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb,
__u16 *mss);
#else
@@ -495,8 +499,12 @@ extern bool cookie_check_timestamp(struct tcp_options_received *opt,
struct net *net, bool *ecn_ok);
/* From net/ipv6/syncookies.c */
+extern int __cookie_v6_check(const struct ipv6hdr *iph, const struct tcphdr *th,
+ u32 cookie);
extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
#ifdef CONFIG_SYN_COOKIES
+extern u32 __cookie_v6_init_sequence(const struct ipv6hdr *iph,
+ const struct tcphdr *th, u16 *mssp);
extern __u32 cookie_v6_init_sequence(struct sock *sk, const struct sk_buff *skb,
__u16 *mss);
#else
diff --git a/include/uapi/linux/ip.h b/include/uapi/linux/ip.h
index 6cf06bfd841b..411959405ab6 100644
--- a/include/uapi/linux/ip.h
+++ b/include/uapi/linux/ip.h
@@ -133,4 +133,40 @@ struct ip_beet_phdr {
__u8 reserved;
};
+/* index values for the variables in ipv4_devconf */
+enum
+{
+ IPV4_DEVCONF_FORWARDING=1,
+ IPV4_DEVCONF_MC_FORWARDING,
+ IPV4_DEVCONF_PROXY_ARP,
+ IPV4_DEVCONF_ACCEPT_REDIRECTS,
+ IPV4_DEVCONF_SECURE_REDIRECTS,
+ IPV4_DEVCONF_SEND_REDIRECTS,
+ IPV4_DEVCONF_SHARED_MEDIA,
+ IPV4_DEVCONF_RP_FILTER,
+ IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
+ IPV4_DEVCONF_BOOTP_RELAY,
+ IPV4_DEVCONF_LOG_MARTIANS,
+ IPV4_DEVCONF_TAG,
+ IPV4_DEVCONF_ARPFILTER,
+ IPV4_DEVCONF_MEDIUM_ID,
+ IPV4_DEVCONF_NOXFRM,
+ IPV4_DEVCONF_NOPOLICY,
+ IPV4_DEVCONF_FORCE_IGMP_VERSION,
+ IPV4_DEVCONF_ARP_ANNOUNCE,
+ IPV4_DEVCONF_ARP_IGNORE,
+ IPV4_DEVCONF_PROMOTE_SECONDARIES,
+ IPV4_DEVCONF_ARP_ACCEPT,
+ IPV4_DEVCONF_ARP_NOTIFY,
+ IPV4_DEVCONF_ACCEPT_LOCAL,
+ IPV4_DEVCONF_SRC_VMARK,
+ IPV4_DEVCONF_PROXY_ARP_PVLAN,
+ IPV4_DEVCONF_ROUTE_LOCALNET,
+ IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
+ IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
+ __IPV4_DEVCONF_MAX
+};
+
+#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
+
#endif /* _UAPI_LINUX_IP_H */
diff --git a/include/uapi/linux/netfilter/nf_conntrack_common.h b/include/uapi/linux/netfilter/nf_conntrack_common.h
index d69483fb3825..8dd803818ebe 100644
--- a/include/uapi/linux/netfilter/nf_conntrack_common.h
+++ b/include/uapi/linux/netfilter/nf_conntrack_common.h
@@ -99,7 +99,8 @@ enum ip_conntrack_events {
IPCT_PROTOINFO, /* protocol information has changed */
IPCT_HELPER, /* new helper has been set */
IPCT_MARK, /* new mark has been set */
- IPCT_NATSEQADJ, /* NAT is doing sequence adjustment */
+ IPCT_SEQADJ, /* sequence adjustment has changed */
+ IPCT_NATSEQADJ = IPCT_SEQADJ,
IPCT_SECMARK, /* new security mark has been set */
IPCT_LABEL, /* new connlabel has been set */
};
diff --git a/include/uapi/linux/netfilter/nfnetlink_conntrack.h b/include/uapi/linux/netfilter/nfnetlink_conntrack.h
index 08fabc6c93f3..acad6c52a652 100644
--- a/include/uapi/linux/netfilter/nfnetlink_conntrack.h
+++ b/include/uapi/linux/netfilter/nfnetlink_conntrack.h
@@ -42,8 +42,10 @@ enum ctattr_type {
CTA_ID,
CTA_NAT_DST,
CTA_TUPLE_MASTER,
- CTA_NAT_SEQ_ADJ_ORIG,
- CTA_NAT_SEQ_ADJ_REPLY,
+ CTA_SEQ_ADJ_ORIG,
+ CTA_NAT_SEQ_ADJ_ORIG = CTA_SEQ_ADJ_ORIG,
+ CTA_SEQ_ADJ_REPLY,
+ CTA_NAT_SEQ_ADJ_REPLY = CTA_SEQ_ADJ_REPLY,
CTA_SECMARK, /* obsolete */
CTA_ZONE,
CTA_SECCTX,
@@ -165,6 +167,15 @@ enum ctattr_protonat {
};
#define CTA_PROTONAT_MAX (__CTA_PROTONAT_MAX - 1)
+enum ctattr_seqadj {
+ CTA_SEQADJ_UNSPEC,
+ CTA_SEQADJ_CORRECTION_POS,
+ CTA_SEQADJ_OFFSET_BEFORE,
+ CTA_SEQADJ_OFFSET_AFTER,
+ __CTA_SEQADJ_MAX
+};
+#define CTA_SEQADJ_MAX (__CTA_SEQADJ_MAX - 1)
+
enum ctattr_natseq {
CTA_NAT_SEQ_UNSPEC,
CTA_NAT_SEQ_CORRECTION_POS,
diff --git a/include/uapi/linux/netfilter/xt_SYNPROXY.h b/include/uapi/linux/netfilter/xt_SYNPROXY.h
new file mode 100644
index 000000000000..2d59fbaa93c6
--- /dev/null
+++ b/include/uapi/linux/netfilter/xt_SYNPROXY.h
@@ -0,0 +1,16 @@
+#ifndef _XT_SYNPROXY_H
+#define _XT_SYNPROXY_H
+
+#define XT_SYNPROXY_OPT_MSS 0x01
+#define XT_SYNPROXY_OPT_WSCALE 0x02
+#define XT_SYNPROXY_OPT_SACK_PERM 0x04
+#define XT_SYNPROXY_OPT_TIMESTAMP 0x08
+#define XT_SYNPROXY_OPT_ECN 0x10
+
+struct xt_synproxy_info {
+ __u8 options;
+ __u8 wscale;
+ __u16 mss;
+};
+
+#endif /* _XT_SYNPROXY_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-15 13:00:49 +0000