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[NETFILTER]: nf_conntrack: sysctl compatibility with old connection tracking

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This patch adds an option to keep the connection tracking sysctls visible
under their old names.

Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Patrick McHardy 2006-11-29 02:35:20 +01:00 committed by David S. Miller
parent 933a41e7e1
commit a999e68376
10 changed files with 332 additions and 1 deletions
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6
include/net/netfilter/nf_conntrack_l4proto.h
View File

@ -80,7 +80,11 @@ struct nf_conntrack_l4proto
struct ctl_table_header **ctl_table_header;
struct ctl_table *ctl_table;
unsigned int *ctl_table_users;
#endif /* CONFIG_SYSCTL */
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
struct ctl_table_header *ctl_compat_table_header;
struct ctl_table *ctl_compat_table;
#endif
#endif
/* Module (if any) which this is connected to. */
struct module *me;

11
net/ipv4/netfilter/Kconfig
View File

@ -19,6 +19,17 @@ config NF_CONNTRACK_IPV4
To compile it as a module, choose M here. If unsure, say N.
config NF_CONNTRACK_PROC_COMPAT
bool "proc/sysctl compatibility with old connection tracking"
depends on NF_CONNTRACK
default y
help
This option enables /proc and sysctl compatibility with the old
layer 3 dependant connection tracking. This is needed to keep
old programs that have not been adapted to the new names working.
If unsure, say Y.
# connection tracking, helpers and protocols
config IP_NF_CONNTRACK
tristate "Connection tracking (required for masq/NAT)"

58
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
View File

@ -266,6 +266,60 @@ static struct nf_hook_ops ipv4_conntrack_ops[] = {
},
};
#if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
static int log_invalid_proto_min = 0;
static int log_invalid_proto_max = 255;
static ctl_table ip_ct_sysctl_table[] = {
{
.ctl_name = NET_IPV4_NF_CONNTRACK_MAX,
.procname = "ip_conntrack_max",
.data = &nf_conntrack_max,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_COUNT,
.procname = "ip_conntrack_count",
.data = &nf_conntrack_count,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_BUCKETS,
.procname = "ip_conntrack_buckets",
.data = &nf_conntrack_htable_size,
.maxlen = sizeof(unsigned int),
.mode = 0444,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_CHECKSUM,
.procname = "ip_conntrack_checksum",
.data = &nf_conntrack_checksum,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_LOG_INVALID,
.procname = "ip_conntrack_log_invalid",
.data = &nf_ct_log_invalid,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &log_invalid_proto_min,
.extra2 = &log_invalid_proto_max,
},
{
.ctl_name = 0
}
};
#endif /* CONFIG_SYSCTL && CONFIG_NF_CONNTRACK_PROC_COMPAT */
/* Fast function for those who don't want to parse /proc (and I don't
blame them). */
/* Reversing the socket's dst/src point of view gives us the reply
@ -385,6 +439,10 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 = {
defined(CONFIG_NF_CT_NETLINK_MODULE)
.tuple_to_nfattr = ipv4_tuple_to_nfattr,
.nfattr_to_tuple = ipv4_nfattr_to_tuple,
#endif
#if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
.ctl_table_path = nf_net_ipv4_netfilter_sysctl_path,
.ctl_table = ip_ct_sysctl_table,
#endif
.me = THIS_MODULE,
};

18
net/ipv4/netfilter/nf_conntrack_proto_icmp.c
View File

@ -336,6 +336,21 @@ static struct ctl_table icmp_sysctl_table[] = {
.ctl_name = 0
}
};
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
static struct ctl_table icmp_compat_sysctl_table[] = {
{
.ctl_name = NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT,
.procname = "ip_conntrack_icmp_timeout",
.data = &nf_ct_icmp_timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = 0
}
};
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif /* CONFIG_SYSCTL */
struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp =
@ -360,6 +375,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp =
#ifdef CONFIG_SYSCTL
.ctl_table_header = &icmp_sysctl_header,
.ctl_table = icmp_sysctl_table,
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
.ctl_compat_table = icmp_compat_sysctl_table,
#endif
#endif
};

2
net/netfilter/nf_conntrack_core.c
View File

@ -66,10 +66,12 @@ DEFINE_RWLOCK(nf_conntrack_lock);
/* nf_conntrack_standalone needs this */
atomic_t nf_conntrack_count = ATOMIC_INIT(0);
EXPORT_SYMBOL_GPL(nf_conntrack_count);
void (*nf_conntrack_destroyed)(struct nf_conn *conntrack) = NULL;
unsigned int nf_conntrack_htable_size __read_mostly;
int nf_conntrack_max __read_mostly;
EXPORT_SYMBOL_GPL(nf_conntrack_max);
struct list_head *nf_conntrack_hash __read_mostly;
struct nf_conn nf_conntrack_untracked __read_mostly;
unsigned int nf_ct_log_invalid __read_mostly;

20
net/netfilter/nf_conntrack_proto.c
View File

@ -250,7 +250,22 @@ static int nf_ct_l4proto_register_sysctl(struct nf_conntrack_l4proto *l4proto)
nf_net_netfilter_sysctl_path,
l4proto->ctl_table,
l4proto->ctl_table_users);
if (err < 0)
goto out;
}
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
if (l4proto->ctl_compat_table != NULL) {
err = nf_ct_register_sysctl(&l4proto->ctl_compat_table_header,
nf_net_ipv4_netfilter_sysctl_path,
l4proto->ctl_compat_table, NULL);
if (err == 0)
goto out;
nf_ct_unregister_sysctl(l4proto->ctl_table_header,
l4proto->ctl_table,
l4proto->ctl_table_users);
}
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
out:
mutex_unlock(&nf_ct_proto_sysctl_mutex);
#endif /* CONFIG_SYSCTL */
return err;
@ -265,6 +280,11 @@ static void nf_ct_l4proto_unregister_sysctl(struct nf_conntrack_l4proto *l4proto
nf_ct_unregister_sysctl(l4proto->ctl_table_header,
l4proto->ctl_table,
l4proto->ctl_table_users);
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
if (l4proto->ctl_compat_table_header != NULL)
nf_ct_unregister_sysctl(&l4proto->ctl_compat_table_header,
l4proto->ctl_compat_table, NULL);
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
mutex_unlock(&nf_ct_proto_sysctl_mutex);
#endif /* CONFIG_SYSCTL */
}

18
net/netfilter/nf_conntrack_proto_generic.c
View File

@ -86,6 +86,21 @@ static struct ctl_table generic_sysctl_table[] = {
.ctl_name = 0
}
};
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
static struct ctl_table generic_compat_sysctl_table[] = {
{
.ctl_name = NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT,
.procname = "ip_conntrack_generic_timeout",
.data = &nf_ct_generic_timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = 0
}
};
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif /* CONFIG_SYSCTL */
struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
@ -102,5 +117,8 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
#ifdef CONFIG_SYSCTL
.ctl_table_header = &generic_sysctl_header,
.ctl_table = generic_sysctl_table,
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
.ctl_compat_table = generic_compat_sysctl_table,
#endif
#endif
};

67
net/netfilter/nf_conntrack_proto_sctp.c
View File

@ -573,6 +573,70 @@ static struct ctl_table sctp_sysctl_table[] = {
.ctl_name = 0
}
};
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
static struct ctl_table sctp_compat_sysctl_table[] = {
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED,
.procname = "ip_conntrack_sctp_timeout_closed",
.data = &nf_ct_sctp_timeout_closed,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT,
.procname = "ip_conntrack_sctp_timeout_cookie_wait",
.data = &nf_ct_sctp_timeout_cookie_wait,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED,
.procname = "ip_conntrack_sctp_timeout_cookie_echoed",
.data = &nf_ct_sctp_timeout_cookie_echoed,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED,
.procname = "ip_conntrack_sctp_timeout_established",
.data = &nf_ct_sctp_timeout_established,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT,
.procname = "ip_conntrack_sctp_timeout_shutdown_sent",
.data = &nf_ct_sctp_timeout_shutdown_sent,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD,
.procname = "ip_conntrack_sctp_timeout_shutdown_recd",
.data = &nf_ct_sctp_timeout_shutdown_recd,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT,
.procname = "ip_conntrack_sctp_timeout_shutdown_ack_sent",
.data = &nf_ct_sctp_timeout_shutdown_ack_sent,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = 0
}
};
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif
struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 = {
@ -590,6 +654,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 = {
.ctl_table_users = &sctp_sysctl_table_users,
.ctl_table_header = &sctp_sysctl_header,
.ctl_table = sctp_sysctl_table,
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
.ctl_compat_table = sctp_compat_sysctl_table,
#endif
#endif
};

107
net/netfilter/nf_conntrack_proto_tcp.c
View File

@ -1273,6 +1273,110 @@ static struct ctl_table tcp_sysctl_table[] = {
.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 =
@ -1298,6 +1402,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 =
.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
};

26
net/netfilter/nf_conntrack_proto_udp.c
View File

@ -172,6 +172,29 @@ static struct ctl_table udp_sysctl_table[] = {
.ctl_name = 0
}
};
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
static struct ctl_table udp_compat_sysctl_table[] = {
{
.ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT,
.procname = "ip_conntrack_udp_timeout",
.data = &nf_ct_udp_timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
.procname = "ip_conntrack_udp_timeout_stream",
.data = &nf_ct_udp_timeout_stream,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
},
{
.ctl_name = 0
}
};
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif /* CONFIG_SYSCTL */
struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 =
@ -195,6 +218,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 =
.ctl_table_users = &udp_sysctl_table_users,
.ctl_table_header = &udp_sysctl_header,
.ctl_table = udp_sysctl_table,
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
.ctl_compat_table = udp_compat_sysctl_table,
#endif
#endif
};