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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-06-07 10:11:50 (GMT) |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-06-16 13:08:55 (GMT) |
| commit | 1afc56794e03229fa53cfa3c5012704d226e1dec (patch) | |
| tree | e4182f8c9539d16d96136ca681ab1cf4a8c430ec /net/netfilter/xt_CT.c | |
| parent | 3cf4c7e381d9a98a44fd86207b950bd8fef55d20 (diff) | |
| download | linux-fsl-qoriq-1afc56794e03229fa53cfa3c5012704d226e1dec.tar.xz | |
netfilter: nf_ct_helper: implement variable length helper private data
This patch uses the new variable length conntrack extensions.
Instead of using union nf_conntrack_help that contain all the
helper private data information, we allocate variable length
area to store the private helper data.
This patch includes the modification of all existing helpers.
It also includes a couple of include header to avoid compilation
warnings.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/xt_CT.c')
| -rw-r--r-- | net/netfilter/xt_CT.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c index a51de9b..1160185 100644 --- a/net/netfilter/xt_CT.c +++ b/net/netfilter/xt_CT.c @@ -112,6 +112,8 @@ static int xt_ct_tg_check_v0(const struct xt_tgchk_param *par) goto err3; if (info->helper[0]) { + struct nf_conntrack_helper *helper; + ret = -ENOENT; proto = xt_ct_find_proto(par); if (!proto) { @@ -120,19 +122,21 @@ static int xt_ct_tg_check_v0(const struct xt_tgchk_param *par) goto err3; } - ret = -ENOMEM; - help = nf_ct_helper_ext_add(ct, GFP_KERNEL); - if (help == NULL) - goto err3; - ret = -ENOENT; - help->helper = nf_conntrack_helper_try_module_get(info->helper, - par->family, - proto); - if (help->helper == NULL) { + helper = nf_conntrack_helper_try_module_get(info->helper, + par->family, + proto); + if (helper == NULL) { pr_info("No such helper \"%s\"\n", info->helper); goto err3; } + + ret = -ENOMEM; + help = nf_ct_helper_ext_add(ct, helper, GFP_KERNEL); + if (help == NULL) + goto err3; + + help->helper = helper; } __set_bit(IPS_TEMPLATE_BIT, &ct->status); @@ -202,6 +206,8 @@ static int xt_ct_tg_check_v1(const struct xt_tgchk_param *par) goto err3; if (info->helper[0]) { + struct nf_conntrack_helper *helper; + ret = -ENOENT; proto = xt_ct_find_proto(par); if (!proto) { @@ -210,19 +216,21 @@ static int xt_ct_tg_check_v1(const struct xt_tgchk_param *par) goto err3; } - ret = -ENOMEM; - help = nf_ct_helper_ext_add(ct, GFP_KERNEL); - if (help == NULL) - goto err3; - ret = -ENOENT; - help->helper = nf_conntrack_helper_try_module_get(info->helper, - par->family, - proto); - if (help->helper == NULL) { + helper = nf_conntrack_helper_try_module_get(info->helper, + par->family, + proto); + if (helper == NULL) { pr_info("No such helper \"%s\"\n", info->helper); goto err3; } + + ret = -ENOMEM; + help = nf_ct_helper_ext_add(ct, helper, GFP_KERNEL); + if (help == NULL) + goto err3; + + help->helper = helper; } #ifdef CONFIG_NF_CONNTRACK_TIMEOUT |