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netfilter: nf_ct_udp[lite]: convert UDP[lite] timeouts to array

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Use one array to store the UDP timeouts instead of two variables.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2012-02-28 02:23:28 +01:00
parent 3b988ece9b
commit 5a41db94c6
2 changed files with 37 additions and 18 deletions
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30
net/netfilter/nf_conntrack_proto_udp.c
View File

@ -25,8 +25,16 @@
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
static unsigned int nf_ct_udp_timeout __read_mostly = 30*HZ;
static unsigned int nf_ct_udp_timeout_stream __read_mostly = 180*HZ;
enum udp_conntrack {
UDP_CT_UNREPLIED,
UDP_CT_REPLIED,
UDP_CT_MAX
};
static unsigned int udp_timeouts[UDP_CT_MAX] = {
[UDP_CT_UNREPLIED] = 30*HZ,
[UDP_CT_REPLIED] = 180*HZ,
};
static bool udp_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
@ -74,13 +82,15 @@ static int udp_packet(struct nf_conn *ct,
/* 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, nf_ct_udp_timeout_stream);
nf_ct_refresh_acct(ct, ctinfo, skb,
udp_timeouts[UDP_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, nf_ct_udp_timeout);
} else {
nf_ct_refresh_acct(ct, ctinfo, skb,
udp_timeouts[UDP_CT_UNREPLIED]);
}
return NF_ACCEPT;
}
@ -142,14 +152,14 @@ static struct ctl_table_header *udp_sysctl_header;
static struct ctl_table udp_sysctl_table[] = {
{
.procname = "nf_conntrack_udp_timeout",
.data = &nf_ct_udp_timeout,
.data = &udp_timeouts[UDP_CT_UNREPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_udp_timeout_stream",
.data = &nf_ct_udp_timeout_stream,
.data = &udp_timeouts[UDP_CT_REPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
@ -160,14 +170,14 @@ static struct ctl_table udp_sysctl_table[] = {
static struct ctl_table udp_compat_sysctl_table[] = {
{
.procname = "ip_conntrack_udp_timeout",
.data = &nf_ct_udp_timeout,
.data = &udp_timeouts[UDP_CT_UNREPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_udp_timeout_stream",
.data = &nf_ct_udp_timeout_stream,
.data = &udp_timeouts[UDP_CT_REPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,

25
net/netfilter/nf_conntrack_proto_udplite.c
View File

@ -24,8 +24,16 @@
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_log.h>
static unsigned int nf_ct_udplite_timeout __read_mostly = 30*HZ;
static unsigned int nf_ct_udplite_timeout_stream __read_mostly = 180*HZ;
enum udplite_conntrack {
UDPLITE_CT_UNREPLIED,
UDPLITE_CT_REPLIED,
UDPLITE_CT_MAX
};
static unsigned int udplite_timeouts[UDPLITE_CT_MAX] = {
[UDPLITE_CT_UNREPLIED] = 30*HZ,
[UDPLITE_CT_REPLIED] = 180*HZ,
};
static bool udplite_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
@ -72,13 +80,14 @@ static int udplite_packet(struct nf_conn *ct,
stream. Extend timeout. */
if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
nf_ct_refresh_acct(ct, ctinfo, skb,
nf_ct_udplite_timeout_stream);
udplite_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, nf_ct_udplite_timeout);
} else {
nf_ct_refresh_acct(ct, ctinfo, skb,
udplite_timeouts[UDPLITE_CT_UNREPLIED]);
}
return NF_ACCEPT;
}
@ -147,14 +156,14 @@ static struct ctl_table_header *udplite_sysctl_header;
static struct ctl_table udplite_sysctl_table[] = {
{
.procname = "nf_conntrack_udplite_timeout",
.data = &nf_ct_udplite_timeout,
.data = &udplite_timeouts[UDPLITE_CT_UNREPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_udplite_timeout_stream",
.data = &nf_ct_udplite_timeout_stream,
.data = &udplite_timeouts[UDPLITE_CT_REPLIED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,