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netfilter: introduce nf_conn_acct structure

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Encapsulate counters for both directions into nf_conn_acct. During
that process also consistently name pointers to the extend 'acct',
not 'counters'. This patch is a cleanup.

Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Holger Eitzenberger 2013-09-26 17:31:51 +02:00 committed by Pablo Neira Ayuso
parent 97203abe6b
commit f7b13e4330
6 changed files with 38 additions and 24 deletions
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10
include/net/netfilter/nf_conntrack_acct.h
View file

@ -19,17 +19,21 @@ struct nf_conn_counter {
atomic64_t bytes;
};
struct nf_conn_acct {
struct nf_conn_counter counter[IP_CT_DIR_MAX];
};
static inline
struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
struct nf_conn_acct *nf_conn_acct_find(const struct nf_conn *ct)
{
return nf_ct_ext_find(ct, NF_CT_EXT_ACCT);
}
static inline
struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
struct nf_conn_acct *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
{
struct net *net = nf_ct_net(ct);
struct nf_conn_counter *acct;
struct nf_conn_acct *acct;
if (!net->ct.sysctl_acct)
return NULL;

2
include/net/netfilter/nf_conntrack_extend.h
View file

@ -36,7 +36,7 @@ enum nf_ct_ext_id {
#define NF_CT_EXT_HELPER_TYPE struct nf_conn_help
#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat
#define NF_CT_EXT_SEQADJ_TYPE struct nf_conn_seqadj
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_counter
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_acct
#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache
#define NF_CT_EXT_ZONE_TYPE struct nf_conntrack_zone
#define NF_CT_EXT_TSTAMP_TYPE struct nf_conn_tstamp

12
net/netfilter/nf_conntrack_acct.c
View file

@ -39,21 +39,23 @@ static struct ctl_table acct_sysctl_table[] = {
unsigned int
seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir)
{
struct nf_conn_counter *acct;
struct nf_conn_acct *acct;
struct nf_conn_counter *counter;
acct = nf_conn_acct_find(ct);
if (!acct)
return 0;
counter = acct->counter;
return seq_printf(s, "packets=%llu bytes=%llu ",
(unsigned long long)atomic64_read(&acct[dir].packets),
(unsigned long long)atomic64_read(&acct[dir].bytes));
(unsigned long long)atomic64_read(&counter[dir].packets),
(unsigned long long)atomic64_read(&counter[dir].bytes));
};
EXPORT_SYMBOL_GPL(seq_print_acct);
static struct nf_ct_ext_type acct_extend __read_mostly = {
.len = sizeof(struct nf_conn_counter[IP_CT_DIR_MAX]),
.align = __alignof__(struct nf_conn_counter[IP_CT_DIR_MAX]),
.len = sizeof(struct nf_conn_acct),
.align = __alignof__(struct nf_conn_acct),
.id = NF_CT_EXT_ACCT,
};

16
net/netfilter/nf_conntrack_core.c
View file

@ -1109,12 +1109,14 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
acct:
if (do_acct) {
struct nf_conn_counter *acct;
struct nf_conn_acct *acct;
acct = nf_conn_acct_find(ct);
if (acct) {
atomic64_inc(&acct[CTINFO2DIR(ctinfo)].packets);
atomic64_add(skb->len, &acct[CTINFO2DIR(ctinfo)].bytes);
struct nf_conn_counter *counter = acct->counter;
atomic64_inc(&counter[CTINFO2DIR(ctinfo)].packets);
atomic64_add(skb->len, &counter[CTINFO2DIR(ctinfo)].bytes);
}
}
}
@ -1126,13 +1128,15 @@ bool __nf_ct_kill_acct(struct nf_conn *ct,
int do_acct)
{
if (do_acct) {
struct nf_conn_counter *acct;
struct nf_conn_acct *acct;
acct = nf_conn_acct_find(ct);
if (acct) {
atomic64_inc(&acct[CTINFO2DIR(ctinfo)].packets);
struct nf_conn_counter *counter = acct->counter;
atomic64_inc(&counter[CTINFO2DIR(ctinfo)].packets);
atomic64_add(skb->len - skb_network_offset(skb),
&acct[CTINFO2DIR(ctinfo)].bytes);
&counter[CTINFO2DIR(ctinfo)].bytes);
}
}

16
net/netfilter/nf_conntrack_netlink.c
View file

@ -237,19 +237,21 @@ static int
ctnetlink_dump_counters(struct sk_buff *skb, const struct nf_conn *ct,
enum ip_conntrack_dir dir, int type)
{
struct nf_conn_counter *acct;
struct nf_conn_acct *acct;
struct nf_conn_counter *counter;
u64 pkts, bytes;
acct = nf_conn_acct_find(ct);
if (!acct)
return 0;
counter = acct->counter;
if (type == IPCTNL_MSG_CT_GET_CTRZERO) {
pkts = atomic64_xchg(&acct[dir].packets, 0);
bytes = atomic64_xchg(&acct[dir].bytes, 0);
pkts = atomic64_xchg(&counter[dir].packets, 0);
bytes = atomic64_xchg(&counter[dir].bytes, 0);
} else {
pkts = atomic64_read(&acct[dir].packets);
bytes = atomic64_read(&acct[dir].bytes);
pkts = atomic64_read(&counter[dir].packets);
bytes = atomic64_read(&counter[dir].bytes);
}
return dump_counters(skb, pkts, bytes, dir);
}
@ -530,7 +532,7 @@ ctnetlink_proto_size(const struct nf_conn *ct)
}
static inline size_t
ctnetlink_counters_size(const struct nf_conn *ct)
ctnetlink_acct_size(const struct nf_conn *ct)
{
if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT))
return 0;
@ -579,7 +581,7 @@ ctnetlink_nlmsg_size(const struct nf_conn *ct)
+ 3 * nla_total_size(sizeof(u_int8_t)) /* CTA_PROTO_NUM */
+ nla_total_size(sizeof(u_int32_t)) /* CTA_ID */
+ nla_total_size(sizeof(u_int32_t)) /* CTA_STATUS */
+ ctnetlink_counters_size(ct)
+ ctnetlink_acct_size(ct)
+ ctnetlink_timestamp_size(ct)
+ nla_total_size(sizeof(u_int32_t)) /* CTA_TIMEOUT */
+ nla_total_size(0) /* CTA_PROTOINFO */

6
net/netfilter/xt_connbytes.c
View file

@ -26,16 +26,18 @@ connbytes_mt(const struct sk_buff *skb, struct xt_action_param *par)
u_int64_t what = 0; /* initialize to make gcc happy */
u_int64_t bytes = 0;
u_int64_t pkts = 0;
const struct nf_conn_acct *acct;
const struct nf_conn_counter *counters;
ct = nf_ct_get(skb, &ctinfo);
if (!ct)
return false;
counters = nf_conn_acct_find(ct);
if (!counters)
acct = nf_conn_acct_find(ct);
if (!acct)
return false;
counters = acct->counter;
switch (sinfo->what) {
case XT_CONNBYTES_PKTS:
switch (sinfo->direction) {