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| author | Krzysztof Piotr Oledzki <ole@ans.pl> | 2008-07-21 10:01:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-21 10:10:58 -0700 |
| commit | 584015727a3b88b46602b20077b46cd04f8b4ab3 (patch) | |
| tree | a9b4ec18e2181e03ee24b59b30f7408bcbcf140c /net/netfilter/xt_connbytes.c | |
| parent | 07a7c1070ed382ad4562e3a0d453fd2001d92f7b (diff) | |
| download | kernel_samsung_smdk4412-584015727a3b88b46602b20077b46cd04f8b4ab3.zip kernel_samsung_smdk4412-584015727a3b88b46602b20077b46cd04f8b4ab3.tar.gz kernel_samsung_smdk4412-584015727a3b88b46602b20077b46cd04f8b4ab3.tar.bz2 | |
netfilter: accounting rework: ct_extend + 64bit counters (v4)
Initially netfilter has had 64bit counters for conntrack-based accounting, but
it was changed in 2.6.14 to save memory. Unfortunately in-kernel 64bit counters are
still required, for example for "connbytes" extension. However, 64bit counters
waste a lot of memory and it was not possible to enable/disable it runtime.
This patch:
- reimplements accounting with respect to the extension infrastructure,
- makes one global version of seq_print_acct() instead of two seq_print_counters(),
- makes it possible to enable it at boot time (for CONFIG_SYSCTL/CONFIG_SYSFS=n),
- makes it possible to enable/disable it at runtime by sysctl or sysfs,
- extends counters from 32bit to 64bit,
- renames ip_conntrack_counter -> nf_conn_counter,
- enables accounting code unconditionally (no longer depends on CONFIG_NF_CT_ACCT),
- set initial accounting enable state based on CONFIG_NF_CT_ACCT
- removes buggy IPCT_COUNTER_FILLING event handling.
If accounting is enabled newly created connections get additional acct extend.
Old connections are not changed as it is not possible to add a ct_extend area
to confirmed conntrack. Accounting is performed for all connections with
acct extend regardless of a current state of "net.netfilter.nf_conntrack_acct".
Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/xt_connbytes.c')
| -rw-r--r-- | net/netfilter/xt_connbytes.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c index d7e8983..3e39c4f 100644 --- a/net/netfilter/xt_connbytes.c +++ b/net/netfilter/xt_connbytes.c @@ -8,6 +8,7 @@ #include <linux/netfilter/x_tables.h> #include <linux/netfilter/xt_connbytes.h> #include <net/netfilter/nf_conntrack.h> +#include <net/netfilter/nf_conntrack_acct.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); @@ -27,12 +28,15 @@ connbytes_mt(const struct sk_buff *skb, const struct net_device *in, u_int64_t what = 0; /* initialize to make gcc happy */ u_int64_t bytes = 0; u_int64_t pkts = 0; - const struct ip_conntrack_counter *counters; + const struct nf_conn_counter *counters; ct = nf_ct_get(skb, &ctinfo); if (!ct) return false; - counters = ct->counters; + + counters = nf_conn_acct_find(ct); + if (!counters) + return false; switch (sinfo->what) { case XT_CONNBYTES_PKTS: |