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authorEric Dumazet <eric.dumazet@gmail.com>2011-04-21 10:57:21 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2011-05-10 09:48:59 +0200
commit5a6351eecf8c87afed9c883bb6341d09406d74ba (patch)
tree2e7262b7002c8f09abaedb9e4e91ec51fdb01299
parent315c34dae0069d0c67abd714bb846cd466289c7f (diff)
downloadblackbird-op-linux-5a6351eecf8c87afed9c883bb6341d09406d74ba.tar.gz
blackbird-op-linux-5a6351eecf8c87afed9c883bb6341d09406d74ba.zip
netfilter: fix ebtables compat support
commit 255d0dc34068a976 (netfilter: x_table: speedup compat operations) made ebtables not working anymore. 1) xt_compat_calc_jump() is not an exact match lookup 2) compat_table_info() has a typo in xt_compat_init_offsets() call 3) compat_do_replace() misses a xt_compat_init_offsets() call Reported-by: dann frazier <dannf@dannf.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
-rw-r--r--net/bridge/netfilter/ebtables.c3
-rw-r--r--net/netfilter/x_tables.c4
2 files changed, 4 insertions, 3 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 893669caa8de..9707079bc40a 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1766,7 +1766,7 @@ static int compat_table_info(const struct ebt_table_info *info,
newinfo->entries_size = size;
- xt_compat_init_offsets(AF_INET, info->nentries);
+ xt_compat_init_offsets(NFPROTO_BRIDGE, info->nentries);
return EBT_ENTRY_ITERATE(entries, size, compat_calc_entry, info,
entries, newinfo);
}
@@ -2240,6 +2240,7 @@ static int compat_do_replace(struct net *net, void __user *user,
xt_compat_lock(NFPROTO_BRIDGE);
+ xt_compat_init_offsets(NFPROTO_BRIDGE, tmp.nentries);
ret = compat_copy_entries(entries_tmp, tmp.entries_size, &state);
if (ret < 0)
goto out_unlock;
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index a9adf4c6b299..8a025a585d2f 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -455,6 +455,7 @@ void xt_compat_flush_offsets(u_int8_t af)
vfree(xt[af].compat_tab);
xt[af].compat_tab = NULL;
xt[af].number = 0;
+ xt[af].cur = 0;
}
}
EXPORT_SYMBOL_GPL(xt_compat_flush_offsets);
@@ -473,8 +474,7 @@ int xt_compat_calc_jump(u_int8_t af, unsigned int offset)
else
return mid ? tmp[mid - 1].delta : 0;
}
- WARN_ON_ONCE(1);
- return 0;
+ return left ? tmp[left - 1].delta : 0;
}
EXPORT_SYMBOL_GPL(xt_compat_calc_jump);
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