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netfilter: conntrack: remove get_timeout() indirection

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Not needed, we can have the l4trackers fetch it themselvs.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2018-06-29 07:46:50 +02:00 committed by Pablo Neira Ayuso
parent 97e08caec3
commit c779e84960
12 changed files with 94 additions and 104 deletions
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8
include/net/netfilter/nf_conntrack_l4proto.h
View File

@ -45,13 +45,12 @@ struct nf_conntrack_l4proto {
int (*packet)(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeouts);
enum ip_conntrack_info ctinfo);
/* 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 *timeouts);
unsigned int dataoff);
/* Called when a conntrack entry is destroyed */
void (*destroy)(struct nf_conn *ct);
@ -63,9 +62,6 @@ struct nf_conntrack_l4proto {
/* called by gc worker if table is full */
bool (*can_early_drop)(const struct nf_conn *ct);
/* 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);

18
include/net/netfilter/nf_conntrack_timeout.h
View File

@ -67,27 +67,17 @@ struct nf_conn_timeout *nf_ct_timeout_ext_add(struct nf_conn *ct,
#endif
};
static inline unsigned int *
nf_ct_timeout_lookup(struct net *net, struct nf_conn *ct,
const struct nf_conntrack_l4proto *l4proto)
static inline unsigned int *nf_ct_timeout_lookup(const struct nf_conn *ct)
{
unsigned int *timeouts = NULL;
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
struct nf_conn_timeout *timeout_ext;
unsigned int *timeouts;
timeout_ext = nf_ct_timeout_find(ct);
if (timeout_ext) {
if (timeout_ext)
timeouts = nf_ct_timeout_data(timeout_ext);
if (unlikely(!timeouts))
timeouts = l4proto->get_timeouts(net);
} else {
timeouts = l4proto->get_timeouts(net);
}
return timeouts;
#else
return l4proto->get_timeouts(net);
#endif
return timeouts;
}
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT

16
net/ipv4/netfilter/nf_conntrack_proto_icmp.c
View File

@ -19,6 +19,7 @@
#include <net/netfilter/nf_conntrack_tuple.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/nf_log.h>
@ -80,12 +81,16 @@ static unsigned int *icmp_get_timeouts(struct net *net)
static int icmp_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeout)
enum ip_conntrack_info ctinfo)
{
/* 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. */
unsigned int *timeout = nf_ct_timeout_lookup(ct);
if (!timeout)
timeout = icmp_get_timeouts(nf_ct_net(ct));
nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
@ -93,7 +98,7 @@ static int icmp_packet(struct nf_conn *ct,
/* 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 *timeouts)
unsigned int dataoff)
{
static const u_int8_t valid_new[] = {
[ICMP_ECHO] = 1,
@ -280,9 +285,11 @@ static int icmp_timeout_nlattr_to_obj(struct nlattr *tb[],
struct nf_icmp_net *in = icmp_pernet(net);
if (tb[CTA_TIMEOUT_ICMP_TIMEOUT]) {
if (!timeout)
timeout = &in->timeout;
*timeout =
ntohl(nla_get_be32(tb[CTA_TIMEOUT_ICMP_TIMEOUT])) * HZ;
} else {
} else if (timeout) {
/* Set default ICMP timeout. */
*timeout = in->timeout;
}
@ -357,7 +364,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp =
.pkt_to_tuple = icmp_pkt_to_tuple,
.invert_tuple = icmp_invert_tuple,
.packet = icmp_packet,
.get_timeouts = icmp_get_timeouts,
.new = icmp_new,
.error = icmp_error,
.destroy = NULL,

14
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
View File

@ -23,6 +23,7 @@
#include <net/netfilter/nf_conntrack_tuple.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/ipv6/nf_conntrack_icmpv6.h>
#include <net/netfilter/nf_log.h>
@ -93,9 +94,13 @@ static unsigned int *icmpv6_get_timeouts(struct net *net)
static int icmpv6_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeout)
enum ip_conntrack_info ctinfo)
{
unsigned int *timeout = nf_ct_timeout_lookup(ct);
if (!timeout)
timeout = icmpv6_get_timeouts(nf_ct_net(ct));
/* 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. */
@ -106,7 +111,7 @@ static int icmpv6_packet(struct nf_conn *ct,
/* 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 *timeouts)
unsigned int dataoff)
{
static const u_int8_t valid_new[] = {
[ICMPV6_ECHO_REQUEST - 128] = 1,
@ -280,6 +285,8 @@ static int icmpv6_timeout_nlattr_to_obj(struct nlattr *tb[],
unsigned int *timeout = data;
struct nf_icmp_net *in = icmpv6_pernet(net);
if (!timeout)
timeout = icmpv6_get_timeouts(net);
if (tb[CTA_TIMEOUT_ICMPV6_TIMEOUT]) {
*timeout =
ntohl(nla_get_be32(tb[CTA_TIMEOUT_ICMPV6_TIMEOUT])) * HZ;
@ -358,7 +365,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 =
.pkt_to_tuple = icmpv6_pkt_to_tuple,
.invert_tuple = icmpv6_invert_tuple,
.packet = icmpv6_packet,
.get_timeouts = icmpv6_get_timeouts,
.new = icmpv6_new,
.error = icmpv6_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)

16
net/netfilter/nf_conntrack_core.c
View File

@ -1337,7 +1337,6 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
const struct nf_conntrack_zone *zone;
struct nf_conn_timeout *timeout_ext;
struct nf_conntrack_zone tmp;
unsigned int *timeouts;
if (!nf_ct_invert_tuple(&repl_tuple, tuple, l4proto)) {
pr_debug("Can't invert tuple.\n");
@ -1356,15 +1355,8 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
}
timeout_ext = tmpl ? nf_ct_timeout_find(tmpl) : NULL;
if (timeout_ext) {
timeouts = nf_ct_timeout_data(timeout_ext);
if (unlikely(!timeouts))
timeouts = l4proto->get_timeouts(net);
} else {
timeouts = l4proto->get_timeouts(net);
}
if (!l4proto->new(ct, skb, dataoff, timeouts)) {
if (!l4proto->new(ct, skb, dataoff)) {
nf_conntrack_free(ct);
pr_debug("can't track with proto module\n");
return NULL;
@ -1493,7 +1485,6 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
const struct nf_conntrack_l4proto *l4proto;
struct nf_conn *ct, *tmpl;
enum ip_conntrack_info ctinfo;
unsigned int *timeouts;
u_int8_t protonum;
int dataoff, ret;
@ -1552,10 +1543,7 @@ repeat:
goto out;
}
/* Decide what timeout policy we want to apply to this flow. */
timeouts = nf_ct_timeout_lookup(net, ct, l4proto);
ret = l4proto->packet(ct, skb, dataoff, ctinfo, timeouts);
ret = l4proto->packet(ct, skb, dataoff, ctinfo);
if (ret <= 0) {
/* Invalid: inverse of the return code tells
* the netfilter core what to do */

17
net/netfilter/nf_conntrack_proto_dccp.c
View File

@ -23,6 +23,7 @@
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_log.h>
/* Timeouts are based on values from RFC4340:
@ -389,7 +390,7 @@ static inline struct nf_dccp_net *dccp_pernet(struct net *net)
}
static bool dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff, unsigned int *timeouts)
unsigned int dataoff)
{
struct net *net = nf_ct_net(ct);
struct nf_dccp_net *dn;
@ -437,19 +438,14 @@ 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,
unsigned int *timeouts)
unsigned int dataoff, enum ip_conntrack_info ctinfo)
{
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
struct dccp_hdr _dh, *dh;
u_int8_t type, old_state, new_state;
enum ct_dccp_roles role;
unsigned int *timeouts;
dh = skb_header_pointer(skb, dataoff, sizeof(_dh), &_dh);
BUG_ON(dh == NULL);
@ -523,6 +519,9 @@ 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);
timeouts = nf_ct_timeout_lookup(ct);
if (!timeouts)
timeouts = dccp_pernet(nf_ct_net(ct))->dccp_timeout;
nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]);
return NF_ACCEPT;
@ -843,7 +842,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp4 = {
.l4proto = IPPROTO_DCCP,
.new = dccp_new,
.packet = dccp_packet,
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
#ifdef CONFIG_NF_CONNTRACK_PROCFS
@ -877,7 +875,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp6 = {
.l4proto = IPPROTO_DCCP,
.new = dccp_new,
.packet = dccp_packet,
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
#ifdef CONFIG_NF_CONNTRACK_PROCFS

22
net/netfilter/nf_conntrack_proto_generic.c
View File

@ -11,6 +11,7 @@
#include <linux/timer.h>
#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_timeout.h>
static const unsigned int nf_ct_generic_timeout = 600*HZ;
@ -41,25 +42,24 @@ static bool generic_pkt_to_tuple(const struct sk_buff *skb,
return true;
}
static unsigned int *generic_get_timeouts(struct net *net)
{
return &(generic_pernet(net)->timeout);
}
/* Returns verdict for packet, or -1 for invalid. */
static int generic_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeout)
enum ip_conntrack_info ctinfo)
{
const unsigned int *timeout = nf_ct_timeout_lookup(ct);
if (!timeout)
timeout = &generic_pernet(nf_ct_net(ct))->timeout;
nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff, unsigned int *timeouts)
unsigned int dataoff)
{
bool ret;
@ -78,8 +78,11 @@ static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
static int generic_timeout_nlattr_to_obj(struct nlattr *tb[],
struct net *net, void *data)
{
unsigned int *timeout = data;
struct nf_generic_net *gn = generic_pernet(net);
unsigned int *timeout = data;
if (!timeout)
timeout = &gn->timeout;
if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT])
*timeout =
@ -160,7 +163,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
.l4proto = 255,
.pkt_to_tuple = generic_pkt_to_tuple,
.packet = generic_packet,
.get_timeouts = generic_get_timeouts,
.new = generic_new,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
.ctnl_timeout = {

14
net/netfilter/nf_conntrack_proto_gre.c
View File

@ -39,6 +39,7 @@
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <linux/netfilter/nf_conntrack_proto_gre.h>
#include <linux/netfilter/nf_conntrack_pptp.h>
@ -234,8 +235,7 @@ static unsigned int *gre_get_timeouts(struct net *net)
static int gre_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeouts)
enum ip_conntrack_info ctinfo)
{
/* If we've seen traffic both ways, this is a GRE connection.
* Extend timeout. */
@ -254,8 +254,13 @@ 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 *timeouts)
unsigned int dataoff)
{
unsigned int *timeouts = nf_ct_timeout_lookup(ct);
if (!timeouts)
timeouts = gre_get_timeouts(nf_ct_net(ct));
pr_debug(": ");
nf_ct_dump_tuple(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
@ -291,6 +296,8 @@ static int gre_timeout_nlattr_to_obj(struct nlattr *tb[],
unsigned int *timeouts = data;
struct netns_proto_gre *net_gre = gre_pernet(net);
if (!timeouts)
timeouts = gre_get_timeouts(net);
/* set default timeouts for GRE. */
timeouts[GRE_CT_UNREPLIED] = net_gre->gre_timeouts[GRE_CT_UNREPLIED];
timeouts[GRE_CT_REPLIED] = net_gre->gre_timeouts[GRE_CT_REPLIED];
@ -350,7 +357,6 @@ static const struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 = {
#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = gre_print_conntrack,
#endif
.get_timeouts = gre_get_timeouts,
.packet = gre_packet,
.new = gre_new,
.destroy = gre_destroy,

18
net/netfilter/nf_conntrack_proto_sctp.c
View File

@ -28,6 +28,7 @@
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_timeout.h>
/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
closely. They're more complex. --RR
@ -272,17 +273,11 @@ 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_pernet(net)->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,
unsigned int *timeouts)
enum ip_conntrack_info ctinfo)
{
enum sctp_conntrack new_state, old_state;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
@ -291,6 +286,7 @@ static int sctp_packet(struct nf_conn *ct,
const struct sctp_chunkhdr *sch;
struct sctp_chunkhdr _sch;
u_int32_t offset, count;
unsigned int *timeouts;
unsigned long map[256 / sizeof(unsigned long)] = { 0 };
sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph);
@ -379,6 +375,10 @@ static int sctp_packet(struct nf_conn *ct,
}
spin_unlock_bh(&ct->lock);
timeouts = nf_ct_timeout_lookup(ct);
if (!timeouts)
timeouts = sctp_pernet(nf_ct_net(ct))->timeouts;
nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]);
if (old_state == SCTP_CONNTRACK_COOKIE_ECHOED &&
@ -399,7 +399,7 @@ 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 *timeouts)
unsigned int dataoff)
{
enum sctp_conntrack new_state;
const struct sctphdr *sh;
@ -760,7 +760,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 = {
.print_conntrack = sctp_print_conntrack,
#endif
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
.new = sctp_new,
.error = sctp_error,
.can_early_drop = sctp_can_early_drop,
@ -795,7 +794,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 = {
.print_conntrack = sctp_print_conntrack,
#endif
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
.new = sctp_new,
.error = sctp_error,
.can_early_drop = sctp_can_early_drop,

23
net/netfilter/nf_conntrack_proto_tcp.c
View File

@ -29,6 +29,7 @@
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_seqadj.h>
#include <net/netfilter/nf_conntrack_synproxy.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
@ -768,27 +769,21 @@ 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_pernet(net)->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,
unsigned int *timeouts)
enum ip_conntrack_info ctinfo)
{
struct net *net = nf_ct_net(ct);
struct nf_tcp_net *tn = tcp_pernet(net);
struct nf_conntrack_tuple *tuple;
enum tcp_conntrack new_state, old_state;
unsigned int index, *timeouts;
enum ip_conntrack_dir dir;
const struct tcphdr *th;
struct tcphdr _tcph;
unsigned long timeout;
unsigned int index;
th = skb_header_pointer(skb, dataoff, sizeof(_tcph), &_tcph);
BUG_ON(th == NULL);
@ -1021,6 +1016,10 @@ static int tcp_packet(struct nf_conn *ct,
&& new_state == TCP_CONNTRACK_FIN_WAIT)
ct->proto.tcp.seen[dir].flags |= IP_CT_TCP_FLAG_CLOSE_INIT;
timeouts = nf_ct_timeout_lookup(ct);
if (!timeouts)
timeouts = tn->timeouts;
if (ct->proto.tcp.retrans >= tn->tcp_max_retrans &&
timeouts[new_state] > timeouts[TCP_CONNTRACK_RETRANS])
timeout = timeouts[TCP_CONNTRACK_RETRANS];
@ -1070,7 +1069,7 @@ 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 *timeouts)
unsigned int dataoff)
{
enum tcp_conntrack new_state;
const struct tcphdr *th;
@ -1288,10 +1287,12 @@ static unsigned int tcp_nlattr_tuple_size(void)
static int tcp_timeout_nlattr_to_obj(struct nlattr *tb[],
struct net *net, void *data)
{
unsigned int *timeouts = data;
struct nf_tcp_net *tn = tcp_pernet(net);
unsigned int *timeouts = data;
int i;
if (!timeouts)
timeouts = tn->timeouts;
/* set default TCP timeouts. */
for (i=0; i<TCP_CONNTRACK_TIMEOUT_MAX; i++)
timeouts[i] = tn->timeouts[i];
@ -1538,7 +1539,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 =
.print_conntrack = tcp_print_conntrack,
#endif
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
.new = tcp_new,
.error = tcp_error,
.can_early_drop = tcp_can_early_drop,
@ -1574,7 +1574,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 =
.print_conntrack = tcp_print_conntrack,
#endif
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
.new = tcp_new,
.error = tcp_error,
.can_early_drop = tcp_can_early_drop,

20
net/netfilter/nf_conntrack_proto_udp.c
View File

@ -22,6 +22,7 @@
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
@ -45,9 +46,14 @@ static unsigned int *udp_get_timeouts(struct net *net)
static int udp_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
unsigned int *timeouts)
enum ip_conntrack_info ctinfo)
{
unsigned int *timeouts;
timeouts = nf_ct_timeout_lookup(ct);
if (!timeouts)
timeouts = udp_get_timeouts(nf_ct_net(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)) {
@ -65,7 +71,7 @@ static int udp_packet(struct nf_conn *ct,
/* 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 *timeouts)
unsigned int dataoff)
{
return true;
}
@ -176,6 +182,9 @@ static int udp_timeout_nlattr_to_obj(struct nlattr *tb[],
unsigned int *timeouts = data;
struct nf_udp_net *un = udp_pernet(net);
if (!timeouts)
timeouts = un->timeouts;
/* set default timeouts for UDP. */
timeouts[UDP_CT_UNREPLIED] = un->timeouts[UDP_CT_UNREPLIED];
timeouts[UDP_CT_REPLIED] = un->timeouts[UDP_CT_REPLIED];
@ -275,7 +284,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 =
.l4proto = IPPROTO_UDP,
.allow_clash = true,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@ -305,7 +313,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 =
.l4proto = IPPROTO_UDPLITE,
.allow_clash = true,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udplite_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@ -335,7 +342,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 =
.l4proto = IPPROTO_UDP,
.allow_clash = true,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udp_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@ -365,7 +371,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 =
.l4proto = IPPROTO_UDPLITE,
.allow_clash = true,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
.error = udplite_error,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@ -388,3 +393,4 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 =
};
EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udplite6);
#endif
#include <net/netfilter/nf_conntrack_timeout.h>

12
net/netfilter/nfnetlink_cttimeout.c
View File

@ -46,7 +46,7 @@ static const struct nla_policy cttimeout_nla_policy[CTA_TIMEOUT_MAX+1] = {
};
static int
ctnl_timeout_parse_policy(void *timeouts,
ctnl_timeout_parse_policy(void *timeout,
const struct nf_conntrack_l4proto *l4proto,
struct net *net, const struct nlattr *attr)
{
@ -67,7 +67,7 @@ ctnl_timeout_parse_policy(void *timeouts,
if (ret < 0)
goto err;
ret = l4proto->ctnl_timeout.nlattr_to_obj(tb, net, timeouts);
ret = l4proto->ctnl_timeout.nlattr_to_obj(tb, net, timeout);
err:
kfree(tb);
@ -372,7 +372,6 @@ static int cttimeout_default_set(struct net *net, struct sock *ctnl,
struct netlink_ext_ack *extack)
{
const struct nf_conntrack_l4proto *l4proto;
unsigned int *timeouts;
__u16 l3num;
__u8 l4num;
int ret;
@ -392,9 +391,7 @@ static int cttimeout_default_set(struct net *net, struct sock *ctnl,
goto err;
}
timeouts = l4proto->get_timeouts(net);
ret = ctnl_timeout_parse_policy(timeouts, l4proto, net,
ret = ctnl_timeout_parse_policy(NULL, l4proto, net,
cda[CTA_TIMEOUT_DATA]);
if (ret < 0)
goto err;
@ -431,7 +428,6 @@ cttimeout_default_fill_info(struct net *net, struct sk_buff *skb, u32 portid,
if (likely(l4proto->ctnl_timeout.obj_to_nlattr)) {
struct nlattr *nest_parms;
unsigned int *timeouts = l4proto->get_timeouts(net);
int ret;
nest_parms = nla_nest_start(skb,
@ -439,7 +435,7 @@ cttimeout_default_fill_info(struct net *net, struct sk_buff *skb, u32 portid,
if (!nest_parms)
goto nla_put_failure;
ret = l4proto->ctnl_timeout.obj_to_nlattr(skb, timeouts);
ret = l4proto->ctnl_timeout.obj_to_nlattr(skb, NULL);
if (ret < 0)
goto nla_put_failure;