diff options
| author |   Patrick McHardy <kaber@trash.net> | 2014-01-06 18:09:49 +0000 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2014-01-07 23:57:32 +0100 |
| commit | 9638f33ecf7e1b7eb844603c1137bc3468902c17 (patch) | |
| tree | 3d9372689c382af60fd1a2aa26dd3bb1f5140dd3 /net/netfilter | |
| parent | netfilter: nft_meta: add l4proto support (diff) | |
| download | linux-dev-9638f33ecf7e1b7eb844603c1137bc3468902c17.tar.xz linux-dev-9638f33ecf7e1b7eb844603c1137bc3468902c17.zip | |
netfilter: nft_ct: load both IPv4 and IPv6 conntrack modules for NFPROTO_INET
The ct expression can currently not be used in the inet family since
we don't have a conntrack module for NFPROTO_INET, so
nf_ct_l3proto_try_module_get() fails. Add some manual handling to
load the modules for both NFPROTO_IPV4 and NFPROTO_IPV6 if the
ct expression is used in the inet family.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nft_ct.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c index 955f4e6e7089..3727a321c9a7 100644 --- a/net/netfilter/nft_ct.c +++ b/net/netfilter/nft_ct.c @@ -129,6 +129,39 @@ static const struct nla_policy nft_ct_policy[NFTA_CT_MAX + 1] = { [NFTA_CT_DIRECTION] = { .type = NLA_U8 }, }; +static int nft_ct_l3proto_try_module_get(uint8_t family) +{ + int err; + + if (family == NFPROTO_INET) { + err = nf_ct_l3proto_try_module_get(NFPROTO_IPV4); + if (err < 0) + goto err1; + err = nf_ct_l3proto_try_module_get(NFPROTO_IPV6); + if (err < 0) + goto err2; + } else { + err = nf_ct_l3proto_try_module_get(family); + if (err < 0) + goto err1; + } + return 0; + +err2: + nf_ct_l3proto_module_put(NFPROTO_IPV4); +err1: + return err; +} + +static void nft_ct_l3proto_module_put(uint8_t family) +{ + if (family == NFPROTO_INET) { + nf_ct_l3proto_module_put(NFPROTO_IPV4); + nf_ct_l3proto_module_put(NFPROTO_IPV6); + } else + nf_ct_l3proto_module_put(family); +} + static int nft_ct_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) @@ -179,7 +212,7 @@ static int nft_ct_init(const struct nft_ctx *ctx, return -EOPNOTSUPP; } - err = nf_ct_l3proto_try_module_get(ctx->afi->family); + err = nft_ct_l3proto_try_module_get(ctx->afi->family); if (err < 0) return err; priv->family = ctx->afi->family; @@ -195,7 +228,7 @@ static int nft_ct_init(const struct nft_ctx *ctx, return 0; err1: - nf_ct_l3proto_module_put(ctx->afi->family); + nft_ct_l3proto_module_put(ctx->afi->family); return err; } @@ -203,7 +236,7 @@ static void nft_ct_destroy(const struct nft_expr *expr) { struct nft_ct *priv = nft_expr_priv(expr); - nf_ct_l3proto_module_put(priv->family); + nft_ct_l3proto_module_put(priv->family); } static int nft_ct_dump(struct sk_buff *skb, const struct nft_expr *expr) |