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Diffstat (limited to 'net/netfilter/nft_ct.c')
-rw-r--r--net/netfilter/nft_ct.c148
1 files changed, 86 insertions, 62 deletions
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
index 917052e2060..cc560301624 100644
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c
@@ -19,15 +19,15 @@
#include <net/netfilter/nf_conntrack_tuple.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_ecache.h>
+#include <net/netfilter/nf_conntrack_labels.h>
struct nft_ct {
enum nft_ct_keys key:8;
enum ip_conntrack_dir dir:8;
- union{
+ union {
enum nft_registers dreg:8;
enum nft_registers sreg:8;
};
- uint8_t family;
};
static void nft_ct_get_eval(const struct nft_expr *expr,
@@ -97,6 +97,26 @@ static void nft_ct_get_eval(const struct nft_expr *expr,
goto err;
strncpy((char *)dest->data, helper->name, sizeof(dest->data));
return;
+#ifdef CONFIG_NF_CONNTRACK_LABELS
+ case NFT_CT_LABELS: {
+ struct nf_conn_labels *labels = nf_ct_labels_find(ct);
+ unsigned int size;
+
+ if (!labels) {
+ memset(dest->data, 0, sizeof(dest->data));
+ return;
+ }
+
+ BUILD_BUG_ON(NF_CT_LABELS_MAX_SIZE > sizeof(dest->data));
+ size = labels->words * sizeof(long);
+
+ memcpy(dest->data, labels->bits, size);
+ if (size < sizeof(dest->data))
+ memset(((char *) dest->data) + size, 0,
+ sizeof(dest->data) - size);
+ return;
+ }
+#endif
}
tuple = &ct->tuplehash[priv->dir].tuple;
@@ -195,22 +215,14 @@ static void nft_ct_l3proto_module_put(uint8_t family)
nf_ct_l3proto_module_put(family);
}
-static int nft_ct_init_validate_get(const struct nft_expr *expr,
- const struct nlattr * const tb[])
+static int nft_ct_get_init(const struct nft_ctx *ctx,
+ const struct nft_expr *expr,
+ const struct nlattr * const tb[])
{
struct nft_ct *priv = nft_expr_priv(expr);
+ int err;
- if (tb[NFTA_CT_DIRECTION] != NULL) {
- priv->dir = nla_get_u8(tb[NFTA_CT_DIRECTION]);
- switch (priv->dir) {
- case IP_CT_DIR_ORIGINAL:
- case IP_CT_DIR_REPLY:
- break;
- default:
- return -EINVAL;
- }
- }
-
+ priv->key = ntohl(nla_get_be32(tb[NFTA_CT_KEY]));
switch (priv->key) {
case NFT_CT_STATE:
case NFT_CT_DIRECTION:
@@ -221,11 +233,15 @@ static int nft_ct_init_validate_get(const struct nft_expr *expr,
#ifdef CONFIG_NF_CONNTRACK_SECMARK
case NFT_CT_SECMARK:
#endif
+#ifdef CONFIG_NF_CONNTRACK_LABELS
+ case NFT_CT_LABELS:
+#endif
case NFT_CT_EXPIRATION:
case NFT_CT_HELPER:
if (tb[NFTA_CT_DIRECTION] != NULL)
return -EINVAL;
break;
+ case NFT_CT_L3PROTOCOL:
case NFT_CT_PROTOCOL:
case NFT_CT_SRC:
case NFT_CT_DST:
@@ -238,69 +254,66 @@ static int nft_ct_init_validate_get(const struct nft_expr *expr,
return -EOPNOTSUPP;
}
- return 0;
-}
-
-static int nft_ct_init_validate_set(uint32_t key)
-{
- switch (key) {
- case NFT_CT_MARK:
- break;
- default:
- return -EOPNOTSUPP;
+ if (tb[NFTA_CT_DIRECTION] != NULL) {
+ priv->dir = nla_get_u8(tb[NFTA_CT_DIRECTION]);
+ switch (priv->dir) {
+ case IP_CT_DIR_ORIGINAL:
+ case IP_CT_DIR_REPLY:
+ break;
+ default:
+ return -EINVAL;
+ }
}
+ priv->dreg = ntohl(nla_get_be32(tb[NFTA_CT_DREG]));
+ err = nft_validate_output_register(priv->dreg);
+ if (err < 0)
+ return err;
+
+ err = nft_validate_data_load(ctx, priv->dreg, NULL, NFT_DATA_VALUE);
+ if (err < 0)
+ return err;
+
+ err = nft_ct_l3proto_try_module_get(ctx->afi->family);
+ if (err < 0)
+ return err;
+
return 0;
}
-static int nft_ct_init(const struct nft_ctx *ctx,
- const struct nft_expr *expr,
- const struct nlattr * const tb[])
+static int nft_ct_set_init(const struct nft_ctx *ctx,
+ const struct nft_expr *expr,
+ const struct nlattr * const tb[])
{
struct nft_ct *priv = nft_expr_priv(expr);
int err;
priv->key = ntohl(nla_get_be32(tb[NFTA_CT_KEY]));
-
- if (tb[NFTA_CT_DREG]) {
- err = nft_ct_init_validate_get(expr, tb);
- if (err < 0)
- return err;
-
- priv->dreg = ntohl(nla_get_be32(tb[NFTA_CT_DREG]));
- err = nft_validate_output_register(priv->dreg);
- if (err < 0)
- return err;
-
- err = nft_validate_data_load(ctx, priv->dreg, NULL,
- NFT_DATA_VALUE);
- if (err < 0)
- return err;
- } else {
- err = nft_ct_init_validate_set(priv->key);
- if (err < 0)
- return err;
-
- priv->sreg = ntohl(nla_get_be32(tb[NFTA_CT_SREG]));
- err = nft_validate_input_register(priv->sreg);
- if (err < 0)
- return err;
+ switch (priv->key) {
+#ifdef CONFIG_NF_CONNTRACK_MARK
+ case NFT_CT_MARK:
+ break;
+#endif
+ default:
+ return -EOPNOTSUPP;
}
- err = nft_ct_l3proto_try_module_get(ctx->afi->family);
+ priv->sreg = ntohl(nla_get_be32(tb[NFTA_CT_SREG]));
+ err = nft_validate_input_register(priv->sreg);
if (err < 0)
return err;
- priv->family = ctx->afi->family;
+ err = nft_ct_l3proto_try_module_get(ctx->afi->family);
+ if (err < 0)
+ return err;
return 0;
}
-static void nft_ct_destroy(const struct nft_expr *expr)
+static void nft_ct_destroy(const struct nft_ctx *ctx,
+ const struct nft_expr *expr)
{
- struct nft_ct *priv = nft_expr_priv(expr);
-
- nft_ct_l3proto_module_put(priv->family);
+ nft_ct_l3proto_module_put(ctx->afi->family);
}
static int nft_ct_get_dump(struct sk_buff *skb, const struct nft_expr *expr)
@@ -311,8 +324,19 @@ static int nft_ct_get_dump(struct sk_buff *skb, const struct nft_expr *expr)
goto nla_put_failure;
if (nla_put_be32(skb, NFTA_CT_KEY, htonl(priv->key)))
goto nla_put_failure;
- if (nla_put_u8(skb, NFTA_CT_DIRECTION, priv->dir))
- goto nla_put_failure;
+
+ switch (priv->key) {
+ case NFT_CT_PROTOCOL:
+ case NFT_CT_SRC:
+ case NFT_CT_DST:
+ case NFT_CT_PROTO_SRC:
+ case NFT_CT_PROTO_DST:
+ if (nla_put_u8(skb, NFTA_CT_DIRECTION, priv->dir))
+ goto nla_put_failure;
+ default:
+ break;
+ }
+
return 0;
nla_put_failure:
@@ -338,7 +362,7 @@ static const struct nft_expr_ops nft_ct_get_ops = {
.type = &nft_ct_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_ct)),
.eval = nft_ct_get_eval,
- .init = nft_ct_init,
+ .init = nft_ct_get_init,
.destroy = nft_ct_destroy,
.dump = nft_ct_get_dump,
};
@@ -347,7 +371,7 @@ static const struct nft_expr_ops nft_ct_set_ops = {
.type = &nft_ct_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_ct)),
.eval = nft_ct_set_eval,
- .init = nft_ct_init,
+ .init = nft_ct_set_init,
.destroy = nft_ct_destroy,
.dump = nft_ct_set_dump,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:46:01 +0000