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Diffstat (limited to 'net/netfilter/nf_conntrack_proto_tcp.c')
-rw-r--r--net/netfilter/nf_conntrack_proto_tcp.c275
1 files changed, 248 insertions, 27 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 238bbb5b72e..626b0011dd8 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -42,7 +42,8 @@
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_conntrack.h>
-#include <net/netfilter/nf_conntrack_protocol.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
+#include <net/netfilter/nf_conntrack_ecache.h>
#if 0
#define DEBUGP printk
@@ -92,22 +93,22 @@ static const char *tcp_conntrack_names[] = {
#define HOURS * 60 MINS
#define DAYS * 24 HOURS
-unsigned int nf_ct_tcp_timeout_syn_sent __read_mostly = 2 MINS;
-unsigned int nf_ct_tcp_timeout_syn_recv __read_mostly = 60 SECS;
-unsigned int nf_ct_tcp_timeout_established __read_mostly = 5 DAYS;
-unsigned int nf_ct_tcp_timeout_fin_wait __read_mostly = 2 MINS;
-unsigned int nf_ct_tcp_timeout_close_wait __read_mostly = 60 SECS;
-unsigned int nf_ct_tcp_timeout_last_ack __read_mostly = 30 SECS;
-unsigned int nf_ct_tcp_timeout_time_wait __read_mostly = 2 MINS;
-unsigned int nf_ct_tcp_timeout_close __read_mostly = 10 SECS;
+static unsigned int nf_ct_tcp_timeout_syn_sent __read_mostly = 2 MINS;
+static unsigned int nf_ct_tcp_timeout_syn_recv __read_mostly = 60 SECS;
+static unsigned int nf_ct_tcp_timeout_established __read_mostly = 5 DAYS;
+static unsigned int nf_ct_tcp_timeout_fin_wait __read_mostly = 2 MINS;
+static unsigned int nf_ct_tcp_timeout_close_wait __read_mostly = 60 SECS;
+static unsigned int nf_ct_tcp_timeout_last_ack __read_mostly = 30 SECS;
+static unsigned int nf_ct_tcp_timeout_time_wait __read_mostly = 2 MINS;
+static unsigned int nf_ct_tcp_timeout_close __read_mostly = 10 SECS;
/* RFC1122 says the R2 limit should be at least 100 seconds.
Linux uses 15 packets as limit, which corresponds
to ~13-30min depending on RTO. */
-unsigned int nf_ct_tcp_timeout_max_retrans __read_mostly = 5 MINS;
+static unsigned int nf_ct_tcp_timeout_max_retrans __read_mostly = 5 MINS;
-static unsigned int * tcp_timeouts[]
-= { NULL, /* TCP_CONNTRACK_NONE */
+static unsigned int * tcp_timeouts[] = {
+ NULL, /* TCP_CONNTRACK_NONE */
&nf_ct_tcp_timeout_syn_sent, /* TCP_CONNTRACK_SYN_SENT, */
&nf_ct_tcp_timeout_syn_recv, /* TCP_CONNTRACK_SYN_RECV, */
&nf_ct_tcp_timeout_established, /* TCP_CONNTRACK_ESTABLISHED, */
@@ -473,8 +474,8 @@ static void tcp_sack(const struct sk_buff *skb, unsigned int dataoff,
/* Fast path for timestamp-only option */
if (length == TCPOLEN_TSTAMP_ALIGNED*4
- && *(__u32 *)ptr ==
- __constant_ntohl((TCPOPT_NOP << 24)
+ && *(__be32 *)ptr ==
+ __constant_htonl((TCPOPT_NOP << 24)
| (TCPOPT_NOP << 16)
| (TCPOPT_TIMESTAMP << 8)
| TCPOLEN_TIMESTAMP))
@@ -505,9 +506,7 @@ static void tcp_sack(const struct sk_buff *skb, unsigned int dataoff,
for (i = 0;
i < (opsize - TCPOLEN_SACK_BASE);
i += TCPOLEN_SACK_PERBLOCK) {
- memcpy(&tmp, (__u32 *)(ptr + i) + 1,
- sizeof(__u32));
- tmp = ntohl(tmp);
+ tmp = ntohl(*((__be32 *)(ptr+i)+1));
if (after(tmp, *sack))
*sack = tmp;
@@ -731,7 +730,7 @@ static int tcp_in_window(struct ip_ct_tcp *state,
return res;
}
-#ifdef CONFIG_IP_NF_NAT_NEEDED
+#ifdef CONFIG_NF_NAT_NEEDED
/* Update sender->td_end after NAT successfully mangled the packet */
/* Caller must linearize skb at tcp header. */
void nf_conntrack_tcp_update(struct sk_buff *skb,
@@ -763,7 +762,7 @@ void nf_conntrack_tcp_update(struct sk_buff *skb,
receiver->td_end, receiver->td_maxend, receiver->td_maxwin,
receiver->td_scale);
}
-
+EXPORT_SYMBOL_GPL(nf_conntrack_tcp_update);
#endif
#define TH_FIN 0x01
@@ -1167,11 +1166,221 @@ static int nfattr_to_tcp(struct nfattr *cda[], struct nf_conn *ct)
return 0;
}
#endif
-
-struct nf_conntrack_protocol nf_conntrack_protocol_tcp4 =
+
+#ifdef CONFIG_SYSCTL
+static unsigned int tcp_sysctl_table_users;
+static struct ctl_table_header *tcp_sysctl_header;
+static struct ctl_table tcp_sysctl_table[] = {
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
+ .procname = "nf_conntrack_tcp_timeout_syn_sent",
+ .data = &nf_ct_tcp_timeout_syn_sent,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
+ .procname = "nf_conntrack_tcp_timeout_syn_recv",
+ .data = &nf_ct_tcp_timeout_syn_recv,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
+ .procname = "nf_conntrack_tcp_timeout_established",
+ .data = &nf_ct_tcp_timeout_established,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
+ .procname = "nf_conntrack_tcp_timeout_fin_wait",
+ .data = &nf_ct_tcp_timeout_fin_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
+ .procname = "nf_conntrack_tcp_timeout_close_wait",
+ .data = &nf_ct_tcp_timeout_close_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
+ .procname = "nf_conntrack_tcp_timeout_last_ack",
+ .data = &nf_ct_tcp_timeout_last_ack,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
+ .procname = "nf_conntrack_tcp_timeout_time_wait",
+ .data = &nf_ct_tcp_timeout_time_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
+ .procname = "nf_conntrack_tcp_timeout_close",
+ .data = &nf_ct_tcp_timeout_close,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
+ .procname = "nf_conntrack_tcp_timeout_max_retrans",
+ .data = &nf_ct_tcp_timeout_max_retrans,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_LOOSE,
+ .procname = "nf_conntrack_tcp_loose",
+ .data = &nf_ct_tcp_loose,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_BE_LIBERAL,
+ .procname = "nf_conntrack_tcp_be_liberal",
+ .data = &nf_ct_tcp_be_liberal,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = NET_NF_CONNTRACK_TCP_MAX_RETRANS,
+ .procname = "nf_conntrack_tcp_max_retrans",
+ .data = &nf_ct_tcp_max_retrans,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = 0
+ }
+};
+
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+static struct ctl_table tcp_compat_sysctl_table[] = {
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
+ .procname = "ip_conntrack_tcp_timeout_syn_sent",
+ .data = &nf_ct_tcp_timeout_syn_sent,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
+ .procname = "ip_conntrack_tcp_timeout_syn_recv",
+ .data = &nf_ct_tcp_timeout_syn_recv,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
+ .procname = "ip_conntrack_tcp_timeout_established",
+ .data = &nf_ct_tcp_timeout_established,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
+ .procname = "ip_conntrack_tcp_timeout_fin_wait",
+ .data = &nf_ct_tcp_timeout_fin_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
+ .procname = "ip_conntrack_tcp_timeout_close_wait",
+ .data = &nf_ct_tcp_timeout_close_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
+ .procname = "ip_conntrack_tcp_timeout_last_ack",
+ .data = &nf_ct_tcp_timeout_last_ack,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
+ .procname = "ip_conntrack_tcp_timeout_time_wait",
+ .data = &nf_ct_tcp_timeout_time_wait,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
+ .procname = "ip_conntrack_tcp_timeout_close",
+ .data = &nf_ct_tcp_timeout_close,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
+ .procname = "ip_conntrack_tcp_timeout_max_retrans",
+ .data = &nf_ct_tcp_timeout_max_retrans,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_LOOSE,
+ .procname = "ip_conntrack_tcp_loose",
+ .data = &nf_ct_tcp_loose,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL,
+ .procname = "ip_conntrack_tcp_be_liberal",
+ .data = &nf_ct_tcp_be_liberal,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS,
+ .procname = "ip_conntrack_tcp_max_retrans",
+ .data = &nf_ct_tcp_max_retrans,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = 0
+ }
+};
+#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
+#endif /* CONFIG_SYSCTL */
+
+struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 =
{
.l3proto = PF_INET,
- .proto = IPPROTO_TCP,
+ .l4proto = IPPROTO_TCP,
.name = "tcp",
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
@@ -1187,12 +1396,21 @@ struct nf_conntrack_protocol nf_conntrack_protocol_tcp4 =
.tuple_to_nfattr = nf_ct_port_tuple_to_nfattr,
.nfattr_to_tuple = nf_ct_port_nfattr_to_tuple,
#endif
+#ifdef CONFIG_SYSCTL
+ .ctl_table_users = &tcp_sysctl_table_users,
+ .ctl_table_header = &tcp_sysctl_header,
+ .ctl_table = tcp_sysctl_table,
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+ .ctl_compat_table = tcp_compat_sysctl_table,
+#endif
+#endif
};
+EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_tcp4);
-struct nf_conntrack_protocol nf_conntrack_protocol_tcp6 =
+struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 =
{
.l3proto = PF_INET6,
- .proto = IPPROTO_TCP,
+ .l4proto = IPPROTO_TCP,
.name = "tcp",
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
@@ -1208,7 +1426,10 @@ struct nf_conntrack_protocol nf_conntrack_protocol_tcp6 =
.tuple_to_nfattr = nf_ct_port_tuple_to_nfattr,
.nfattr_to_tuple = nf_ct_port_nfattr_to_tuple,
#endif
+#ifdef CONFIG_SYSCTL
+ .ctl_table_users = &tcp_sysctl_table_users,
+ .ctl_table_header = &tcp_sysctl_header,
+ .ctl_table = tcp_sysctl_table,
+#endif
};
-
-EXPORT_SYMBOL(nf_conntrack_protocol_tcp4);
-EXPORT_SYMBOL(nf_conntrack_protocol_tcp6);
+EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_tcp6);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 17:33:30 +0000