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Date: Thu, 8 Mar 2012 02:01:08 +0100
From: pablo@...filter.org
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 19/23] netfilter: nf_conntrack: pass timeout array to l4->new and l4->packet
From: Pablo Neira Ayuso <pablo@...filter.org>
This patch defines a new interface for l4 protocol trackers:
unsigned int *(*get_timeouts)(struct net *net);
that is used to return the array of unsigned int that contains
the timeouts that will be applied for this flow. This is passed
to the l4proto->new(...) and l4proto->packet(...) functions to
specify the timeout policy.
This interface allows per-net global timeout configuration
(although only DCCP supports this by now) and it will allow
custom custom timeout configuration by means of follow-up
patches.
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
include/net/netfilter/nf_conntrack_l4proto.h | 8 +++++-
net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 13 ++++++++--
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 13 ++++++++--
net/netfilter/nf_conntrack_core.c | 18 ++++++++++-----
net/netfilter/nf_conntrack_proto_dccp.c | 16 +++++++++----
net/netfilter/nf_conntrack_proto_generic.c | 29 ++++++++++++++---------
net/netfilter/nf_conntrack_proto_gre.c | 15 +++++++++---
net/netfilter/nf_conntrack_proto_sctp.c | 14 +++++++++--
net/netfilter/nf_conntrack_proto_tcp.c | 22 ++++++++++++-----
net/netfilter/nf_conntrack_proto_udp.c | 16 ++++++++++---
net/netfilter/nf_conntrack_proto_udplite.c | 16 ++++++++++---
11 files changed, 128 insertions(+), 52 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index e3d3ee3..c48b674 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -39,12 +39,13 @@ struct nf_conntrack_l4proto {
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
u_int8_t pf,
- unsigned int hooknum);
+ unsigned int hooknum,
+ unsigned int *timeouts);
/* Called when a new connection for this protocol found;
* returns TRUE if it's OK. If so, packet() called next. */
bool (*new)(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff);
+ unsigned int dataoff, unsigned int *timeouts);
/* Called when a conntrack entry is destroyed */
void (*destroy)(struct nf_conn *ct);
@@ -60,6 +61,9 @@ struct nf_conntrack_l4proto {
/* Print out the private part of the conntrack. */
int (*print_conntrack)(struct seq_file *s, struct nf_conn *);
+ /* Return the array of timeouts for this protocol. */
+ unsigned int *(*get_timeouts)(struct net *net);
+
/* convert protoinfo to nfnetink attributes */
int (*to_nlattr)(struct sk_buff *skb, struct nlattr *nla,
struct nf_conn *ct);
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index ab5b27a..6b80112 100644
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -75,25 +75,31 @@ static int icmp_print_tuple(struct seq_file *s,
ntohs(tuple->src.u.icmp.id));
}
+static unsigned int *icmp_get_timeouts(struct net *net)
+{
+ return &nf_ct_icmp_timeout;
+}
+
/* Returns verdict for packet, or -1 for invalid. */
static int icmp_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 hooknum,
+ unsigned int *timeout)
{
/* Do not immediately delete the connection after the first
successful reply to avoid excessive conntrackd traffic
and also to handle correctly ICMP echo reply duplicates. */
- nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmp_timeout);
+ nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static bool icmp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
static const u_int8_t valid_new[] = {
[ICMP_ECHO] = 1,
@@ -298,6 +304,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp __read_mostly =
.invert_tuple = icmp_invert_tuple,
.print_tuple = icmp_print_tuple,
.packet = icmp_packet,
+ .get_timeouts = icmp_get_timeouts,
.new = icmp_new,
.error = icmp_error,
.destroy = NULL,
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 7c05e7e..2eb9751 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -88,25 +88,31 @@ static int icmpv6_print_tuple(struct seq_file *s,
ntohs(tuple->src.u.icmp.id));
}
+static unsigned int *icmpv6_get_timeouts(struct net *net)
+{
+ return &nf_ct_icmpv6_timeout;
+}
+
/* Returns verdict for packet, or -1 for invalid. */
static int icmpv6_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 hooknum,
+ unsigned int *timeout)
{
/* Do not immediately delete the connection after the first
successful reply to avoid excessive conntrackd traffic
and also to handle correctly ICMP echo reply duplicates. */
- nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmpv6_timeout);
+ nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
static const u_int8_t valid_new[] = {
[ICMPV6_ECHO_REQUEST - 128] = 1,
@@ -293,6 +299,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
.invert_tuple = icmpv6_invert_tuple,
.print_tuple = icmpv6_print_tuple,
.packet = icmpv6_packet,
+ .get_timeouts = icmpv6_get_timeouts,
.new = icmpv6_new,
.error = icmpv6_error,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index ed86a3b..d18995e 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -763,7 +763,8 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
struct nf_conntrack_l3proto *l3proto,
struct nf_conntrack_l4proto *l4proto,
struct sk_buff *skb,
- unsigned int dataoff, u32 hash)
+ unsigned int dataoff, u32 hash,
+ unsigned int *timeouts)
{
struct nf_conn *ct;
struct nf_conn_help *help;
@@ -782,7 +783,7 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
if (IS_ERR(ct))
return (struct nf_conntrack_tuple_hash *)ct;
- if (!l4proto->new(ct, skb, dataoff)) {
+ if (!l4proto->new(ct, skb, dataoff, timeouts)) {
nf_conntrack_free(ct);
pr_debug("init conntrack: can't track with proto module\n");
return NULL;
@@ -848,7 +849,8 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl,
struct nf_conntrack_l3proto *l3proto,
struct nf_conntrack_l4proto *l4proto,
int *set_reply,
- enum ip_conntrack_info *ctinfo)
+ enum ip_conntrack_info *ctinfo,
+ unsigned int *timeouts)
{
struct nf_conntrack_tuple tuple;
struct nf_conntrack_tuple_hash *h;
@@ -868,7 +870,7 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl,
h = __nf_conntrack_find_get(net, zone, &tuple, hash);
if (!h) {
h = init_conntrack(net, tmpl, &tuple, l3proto, l4proto,
- skb, dataoff, hash);
+ skb, dataoff, hash, timeouts);
if (!h)
return NULL;
if (IS_ERR(h))
@@ -909,6 +911,7 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
enum ip_conntrack_info ctinfo;
struct nf_conntrack_l3proto *l3proto;
struct nf_conntrack_l4proto *l4proto;
+ unsigned int *timeouts;
unsigned int dataoff;
u_int8_t protonum;
int set_reply = 0;
@@ -955,8 +958,11 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
goto out;
}
+ timeouts = l4proto->get_timeouts(net);
+
ct = resolve_normal_ct(net, tmpl, skb, dataoff, pf, protonum,
- l3proto, l4proto, &set_reply, &ctinfo);
+ l3proto, l4proto, &set_reply, &ctinfo,
+ timeouts);
if (!ct) {
/* Not valid part of a connection */
NF_CT_STAT_INC_ATOMIC(net, invalid);
@@ -973,7 +979,7 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
NF_CT_ASSERT(skb->nfct);
- ret = l4proto->packet(ct, skb, dataoff, ctinfo, pf, hooknum);
+ ret = l4proto->packet(ct, skb, dataoff, ctinfo, pf, hooknum, timeouts);
if (ret <= 0) {
/* Invalid: inverse of the return code tells
* the netfilter core what to do */
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index d6dde6d..8ea3359 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -423,7 +423,7 @@ static bool dccp_invert_tuple(struct nf_conntrack_tuple *inv,
}
static bool dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
struct net *net = nf_ct_net(ct);
struct dccp_net *dn;
@@ -472,12 +472,17 @@ static u64 dccp_ack_seq(const struct dccp_hdr *dh)
ntohl(dhack->dccph_ack_nr_low);
}
+static unsigned int *dccp_get_timeouts(struct net *net)
+{
+ return dccp_pernet(net)->dccp_timeout;
+}
+
static int dccp_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)
+ u_int8_t pf, unsigned int hooknum,
+ unsigned int *timeouts)
{
struct net *net = nf_ct_net(ct);
- struct dccp_net *dn;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
struct dccp_hdr _dh, *dh;
u_int8_t type, old_state, new_state;
@@ -559,8 +564,7 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb,
if (new_state != old_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, ct);
- dn = dccp_pernet(net);
- nf_ct_refresh_acct(ct, ctinfo, skb, dn->dccp_timeout[new_state]);
+ nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]);
return NF_ACCEPT;
}
@@ -767,6 +771,7 @@ static struct nf_conntrack_l4proto dccp_proto4 __read_mostly = {
.invert_tuple = dccp_invert_tuple,
.new = dccp_new,
.packet = dccp_packet,
+ .get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.print_tuple = dccp_print_tuple,
.print_conntrack = dccp_print_conntrack,
@@ -789,6 +794,7 @@ static struct nf_conntrack_l4proto dccp_proto6 __read_mostly = {
.invert_tuple = dccp_invert_tuple,
.new = dccp_new,
.packet = dccp_packet,
+ .get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.print_tuple = dccp_print_tuple,
.print_conntrack = dccp_print_conntrack,
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index e2091d0..0e6c545 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -40,21 +40,27 @@ static int generic_print_tuple(struct seq_file *s,
return 0;
}
+static unsigned int *generic_get_timeouts(struct net *net)
+{
+ return &nf_ct_generic_timeout;
+}
+
/* Returns verdict for packet, or -1 for invalid. */
-static int 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)
+static int generic_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 *timeout)
{
- nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_generic_timeout);
+ nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
-static bool new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
+ unsigned int dataoff, unsigned int *timeouts)
{
return true;
}
@@ -93,8 +99,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly =
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
.print_tuple = generic_print_tuple,
- .packet = packet,
- .new = new,
+ .packet = generic_packet,
+ .get_timeouts = generic_get_timeouts,
+ .new = generic_new,
#ifdef CONFIG_SYSCTL
.ctl_table_header = &generic_sysctl_header,
.ctl_table = generic_sysctl_table,
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 8144f22..1bf01c9 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -235,13 +235,19 @@ static int gre_print_conntrack(struct seq_file *s, struct nf_conn *ct)
(ct->proto.gre.stream_timeout / HZ));
}
+static unsigned int *gre_get_timeouts(struct net *net)
+{
+ return gre_timeouts;
+}
+
/* Returns verdict for packet, and may modify conntrack */
static int gre_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 hooknum,
+ unsigned int *timeouts)
{
/* If we've seen traffic both ways, this is a GRE connection.
* Extend timeout. */
@@ -260,15 +266,15 @@ static int gre_packet(struct nf_conn *ct,
/* Called when a new connection for this protocol found. */
static bool gre_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
pr_debug(": ");
nf_ct_dump_tuple(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
/* initialize to sane value. Ideally a conntrack helper
* (e.g. in case of pptp) is increasing them */
- ct->proto.gre.stream_timeout = gre_timeouts[GRE_CT_REPLIED];
- ct->proto.gre.timeout = gre_timeouts[GRE_CT_UNREPLIED];
+ ct->proto.gre.stream_timeout = timeouts[GRE_CT_REPLIED];
+ ct->proto.gre.timeout = timeouts[GRE_CT_UNREPLIED];
return true;
}
@@ -295,6 +301,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = {
.invert_tuple = gre_invert_tuple,
.print_tuple = gre_print_tuple,
.print_conntrack = gre_print_conntrack,
+ .get_timeouts = gre_get_timeouts,
.packet = gre_packet,
.new = gre_new,
.destroy = gre_destroy,
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index afa6913..2a07033 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -279,13 +279,19 @@ static int sctp_new_state(enum ip_conntrack_dir dir,
return sctp_conntracks[dir][i][cur_state];
}
+static unsigned int *sctp_get_timeouts(struct net *net)
+{
+ return sctp_timeouts;
+}
+
/* Returns verdict for packet, or -NF_ACCEPT for invalid. */
static int sctp_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 hooknum,
+ unsigned int *timeouts)
{
enum sctp_conntrack new_state, old_state;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
@@ -370,7 +376,7 @@ static int sctp_packet(struct nf_conn *ct,
}
spin_unlock_bh(&ct->lock);
- nf_ct_refresh_acct(ct, ctinfo, skb, sctp_timeouts[new_state]);
+ nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]);
if (old_state == SCTP_CONNTRACK_COOKIE_ECHOED &&
dir == IP_CT_DIR_REPLY &&
@@ -390,7 +396,7 @@ out:
/* Called when a new connection for this protocol found. */
static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
enum sctp_conntrack new_state;
const struct sctphdr *sh;
@@ -664,6 +670,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.print_tuple = sctp_print_tuple,
.print_conntrack = sctp_print_conntrack,
.packet = sctp_packet,
+ .get_timeouts = sctp_get_timeouts,
.new = sctp_new,
.me = THIS_MODULE,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@@ -694,6 +701,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
.print_tuple = sctp_print_tuple,
.print_conntrack = sctp_print_conntrack,
.packet = sctp_packet,
+ .get_timeouts = sctp_get_timeouts,
.new = sctp_new,
.me = THIS_MODULE,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 57c7785..8372bb4 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -813,13 +813,19 @@ static int tcp_error(struct net *net, struct nf_conn *tmpl,
return NF_ACCEPT;
}
+static unsigned int *tcp_get_timeouts(struct net *net)
+{
+ return tcp_timeouts;
+}
+
/* Returns verdict for packet, or -1 for invalid. */
static int tcp_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 hooknum,
+ unsigned int *timeouts)
{
struct net *net = nf_ct_net(ct);
struct nf_conntrack_tuple *tuple;
@@ -1014,14 +1020,14 @@ static int tcp_packet(struct nf_conn *ct,
ct->proto.tcp.seen[dir].flags |= IP_CT_TCP_FLAG_CLOSE_INIT;
if (ct->proto.tcp.retrans >= nf_ct_tcp_max_retrans &&
- tcp_timeouts[new_state] > tcp_timeouts[TCP_CONNTRACK_RETRANS])
- timeout = tcp_timeouts[TCP_CONNTRACK_RETRANS];
+ timeouts[new_state] > timeouts[TCP_CONNTRACK_RETRANS])
+ timeout = timeouts[TCP_CONNTRACK_RETRANS];
else if ((ct->proto.tcp.seen[0].flags | ct->proto.tcp.seen[1].flags) &
IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED &&
- tcp_timeouts[new_state] > tcp_timeouts[TCP_CONNTRACK_UNACK])
- timeout = tcp_timeouts[TCP_CONNTRACK_UNACK];
+ timeouts[new_state] > timeouts[TCP_CONNTRACK_UNACK])
+ timeout = timeouts[TCP_CONNTRACK_UNACK];
else
- timeout = tcp_timeouts[new_state];
+ timeout = timeouts[new_state];
spin_unlock_bh(&ct->lock);
if (new_state != old_state)
@@ -1053,7 +1059,7 @@ static int tcp_packet(struct nf_conn *ct,
/* Called when a new connection for this protocol found. */
static bool tcp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
enum tcp_conntrack new_state;
const struct tcphdr *th;
@@ -1444,6 +1450,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly =
.print_tuple = tcp_print_tuple,
.print_conntrack = tcp_print_conntrack,
.packet = tcp_packet,
+ .get_timeouts = tcp_get_timeouts,
.new = tcp_new,
.error = tcp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@@ -1476,6 +1483,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly =
.print_tuple = tcp_print_tuple,
.print_conntrack = tcp_print_conntrack,
.packet = tcp_packet,
+ .get_timeouts = tcp_get_timeouts,
.new = tcp_new,
.error = tcp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 5b24ff8..70e0059 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -71,32 +71,38 @@ static int udp_print_tuple(struct seq_file *s,
ntohs(tuple->dst.u.udp.port));
}
+static unsigned int *udp_get_timeouts(struct net *net)
+{
+ return udp_timeouts;
+}
+
/* Returns verdict for packet, and may modify conntracktype */
static int udp_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 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,
- udp_timeouts[UDP_CT_REPLIED]);
+ 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,
- udp_timeouts[UDP_CT_UNREPLIED]);
+ timeouts[UDP_CT_UNREPLIED]);
}
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static bool udp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
return true;
}
@@ -196,6 +202,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly =
.invert_tuple = udp_invert_tuple,
.print_tuple = udp_print_tuple,
.packet = udp_packet,
+ .get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@@ -224,6 +231,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly =
.invert_tuple = udp_invert_tuple,
.print_tuple = udp_print_tuple,
.packet = udp_packet,
+ .get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index e730717..0b32ccb 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -68,32 +68,38 @@ static int udplite_print_tuple(struct seq_file *s,
ntohs(tuple->dst.u.udp.port));
}
+static unsigned int *udplite_get_timeouts(struct net *net)
+{
+ return udplite_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 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,
- udplite_timeouts[UDPLITE_CT_REPLIED]);
+ 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,
- udplite_timeouts[UDPLITE_CT_UNREPLIED]);
+ 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,
- unsigned int dataoff)
+ unsigned int dataoff, unsigned int *timeouts)
{
return true;
}
@@ -181,6 +187,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 __read_mostly =
.invert_tuple = udplite_invert_tuple,
.print_tuple = udplite_print_tuple,
.packet = udplite_packet,
+ .get_timeouts = udplite_get_timeouts,
.new = udplite_new,
.error = udplite_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@@ -205,6 +212,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 __read_mostly =
.invert_tuple = udplite_invert_tuple,
.print_tuple = udplite_print_tuple,
.packet = udplite_packet,
+ .get_timeouts = udplite_get_timeouts,
.new = udplite_new,
.error = udplite_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
--
1.7.7.3
--
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