diff options
| author |   Liping Zhang <zlpnobody@gmail.com> | 2017-05-07 22:01:55 +0800 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2017-05-15 12:42:29 +0200 |
| commit | d91fc59cd77c719f33eda65c194ad8f95a055190 (patch) | |
| tree | b39d63460a1b261518ed0fecc72a7ff1cff320c8 /net/netfilter | |
| parent | netfilter: don't setup nat info for confirmed ct (diff) | |
| download | linux-dev-d91fc59cd77c719f33eda65c194ad8f95a055190.tar.xz linux-dev-d91fc59cd77c719f33eda65c194ad8f95a055190.zip | |
netfilter: introduce nf_conntrack_helper_put helper function
And convert module_put invocation to nf_conntrack_helper_put, this is
prepared for the followup patch, which will add a refcnt for cthelper,
so we can reject the deleting request when cthelper is in use.
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_conntrack_helper.c | 6 | ||||
| -rw-r--r-- | net/netfilter/nft_ct.c | 4 | ||||
| -rw-r--r-- | net/netfilter/xt_CT.c | 6 |
3 files changed, 11 insertions, 5 deletions
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index 3a60efa7799b..e17006b6e434 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -181,6 +181,12 @@ nf_conntrack_helper_try_module_get(const char *name, u16 l3num, u8 protonum) } EXPORT_SYMBOL_GPL(nf_conntrack_helper_try_module_get); +void nf_conntrack_helper_put(struct nf_conntrack_helper *helper) +{ + module_put(helper->me); +} +EXPORT_SYMBOL_GPL(nf_conntrack_helper_put); + struct nf_conn_help * nf_ct_helper_ext_add(struct nf_conn *ct, struct nf_conntrack_helper *helper, gfp_t gfp) diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c index a34ceb38fc55..1678e9e75e8e 100644 --- a/net/netfilter/nft_ct.c +++ b/net/netfilter/nft_ct.c @@ -826,9 +826,9 @@ static void nft_ct_helper_obj_destroy(struct nft_object *obj) struct nft_ct_helper_obj *priv = nft_obj_data(obj); if (priv->helper4) - module_put(priv->helper4->me); + nf_conntrack_helper_put(priv->helper4); if (priv->helper6) - module_put(priv->helper6->me); + nf_conntrack_helper_put(priv->helper6); } static void nft_ct_helper_obj_eval(struct nft_object *obj, diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c index bb7ad82dcd56..623ef37de886 100644 --- a/net/netfilter/xt_CT.c +++ b/net/netfilter/xt_CT.c @@ -96,7 +96,7 @@ xt_ct_set_helper(struct nf_conn *ct, const char *helper_name, help = nf_ct_helper_ext_add(ct, helper, GFP_KERNEL); if (help == NULL) { - module_put(helper->me); + nf_conntrack_helper_put(helper); return -ENOMEM; } @@ -263,7 +263,7 @@ out: err4: help = nfct_help(ct); if (help) - module_put(help->helper->me); + nf_conntrack_helper_put(help->helper); err3: nf_ct_tmpl_free(ct); err2: @@ -346,7 +346,7 @@ static void xt_ct_tg_destroy(const struct xt_tgdtor_param *par, if (ct) { help = nfct_help(ct); if (help) - module_put(help->helper->me); + nf_conntrack_helper_put(help->helper); nf_ct_netns_put(par->net, par->family); |