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| author | Jan Engelhardt <jengelh@medozas.de> | 2009-03-16 15:35:29 +0100 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-03-16 15:35:29 +0100 |
| commit | acc738fec03bdaa5b77340c32a82fbfedaaabef0 (patch) | |
| tree | 646495518d8e4946862ab9d361eb2248d4212be5 /include/linux | |
| parent | 95ba434f898c3cb5c7457dce265bf0ab72ba8ce9 (diff) | |
| download | op-kernel-dev-acc738fec03bdaa5b77340c32a82fbfedaaabef0.zip op-kernel-dev-acc738fec03bdaa5b77340c32a82fbfedaaabef0.tar.gz | |
netfilter: xtables: avoid pointer to self
Commit 784544739a25c30637397ace5489eeb6e15d7d49 (netfilter: iptables:
lock free counters) broke a number of modules whose rule data referenced
itself. A reallocation would not reestablish the correct references, so
it is best to use a separate struct that does not fall under RCU.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netfilter/xt_limit.h | 9 | ||||
| -rw-r--r-- | include/linux/netfilter/xt_quota.h | 4 | ||||
| -rw-r--r-- | include/linux/netfilter/xt_statistic.h | 7 |
3 files changed, 12 insertions, 8 deletions
diff --git a/include/linux/netfilter/xt_limit.h b/include/linux/netfilter/xt_limit.h index b3ce653..fda222c 100644 --- a/include/linux/netfilter/xt_limit.h +++ b/include/linux/netfilter/xt_limit.h @@ -4,6 +4,8 @@ /* timings are in milliseconds. */ #define XT_LIMIT_SCALE 10000 +struct xt_limit_priv; + /* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490 seconds, or one every 59 hours. */ struct xt_rateinfo { @@ -11,11 +13,10 @@ struct xt_rateinfo { u_int32_t burst; /* Period multiplier for upper limit. */ /* Used internally by the kernel */ - unsigned long prev; - u_int32_t credit; + unsigned long prev; /* moved to xt_limit_priv */ + u_int32_t credit; /* moved to xt_limit_priv */ u_int32_t credit_cap, cost; - /* Ugly, ugly fucker. */ - struct xt_rateinfo *master; + struct xt_limit_priv *master; }; #endif /*_XT_RATE_H*/ diff --git a/include/linux/netfilter/xt_quota.h b/include/linux/netfilter/xt_quota.h index 4c8368d..8dc89df 100644 --- a/include/linux/netfilter/xt_quota.h +++ b/include/linux/netfilter/xt_quota.h @@ -6,13 +6,15 @@ enum xt_quota_flags { }; #define XT_QUOTA_MASK 0x1 +struct xt_quota_priv; + struct xt_quota_info { u_int32_t flags; u_int32_t pad; /* Used internally by the kernel */ aligned_u64 quota; - struct xt_quota_info *master; + struct xt_quota_priv *master; }; #endif /* _XT_QUOTA_H */ diff --git a/include/linux/netfilter/xt_statistic.h b/include/linux/netfilter/xt_statistic.h index 3d38bc9..8f521ab 100644 --- a/include/linux/netfilter/xt_statistic.h +++ b/include/linux/netfilter/xt_statistic.h @@ -13,6 +13,8 @@ enum xt_statistic_flags { }; #define XT_STATISTIC_MASK 0x1 +struct xt_statistic_priv; + struct xt_statistic_info { u_int16_t mode; u_int16_t flags; @@ -23,11 +25,10 @@ struct xt_statistic_info { struct { u_int32_t every; u_int32_t packet; - /* Used internally by the kernel */ - u_int32_t count; + u_int32_t count; /* unused */ } nth; } u; - struct xt_statistic_info *master __attribute__((aligned(8))); + struct xt_statistic_priv *master __attribute__((aligned(8))); }; #endif /* _XT_STATISTIC_H */ |
