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Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_tables_api.c184
-rw-r--r--net/netfilter/nft_bitwise.c66
-rw-r--r--net/netfilter/nft_cmp.c44
-rw-r--r--net/netfilter/nft_dynset.c2
-rw-r--r--net/netfilter/nft_immediate.c22
-rw-r--r--net/netfilter/nft_range.c27
6 files changed, 211 insertions, 134 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 9f976b11d896..3cc88998b879 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -153,6 +153,7 @@ static struct nft_trans *nft_trans_alloc_gfp(const struct nft_ctx *ctx,
if (trans == NULL)
return NULL;
+ INIT_LIST_HEAD(&trans->list);
trans->msg_type = msg_type;
trans->ctx = *ctx;
@@ -2472,6 +2473,7 @@ err:
}
static struct nft_chain *nft_chain_lookup_byid(const struct net *net,
+ const struct nft_table *table,
const struct nlattr *nla)
{
struct nftables_pernet *nft_net = nft_pernet(net);
@@ -2482,6 +2484,7 @@ static struct nft_chain *nft_chain_lookup_byid(const struct net *net,
struct nft_chain *chain = trans->ctx.chain;
if (trans->msg_type == NFT_MSG_NEWCHAIN &&
+ chain->table == table &&
id == nft_trans_chain_id(trans))
return chain;
}
@@ -3371,6 +3374,7 @@ static int nft_table_validate(struct net *net, const struct nft_table *table)
}
static struct nft_rule *nft_rule_lookup_byid(const struct net *net,
+ const struct nft_chain *chain,
const struct nlattr *nla);
#define NFT_RULE_MAXEXPRS 128
@@ -3417,7 +3421,7 @@ static int nf_tables_newrule(struct sk_buff *skb, const struct nfnl_info *info,
return -EOPNOTSUPP;
} else if (nla[NFTA_RULE_CHAIN_ID]) {
- chain = nft_chain_lookup_byid(net, nla[NFTA_RULE_CHAIN_ID]);
+ chain = nft_chain_lookup_byid(net, table, nla[NFTA_RULE_CHAIN_ID]);
if (IS_ERR(chain)) {
NL_SET_BAD_ATTR(extack, nla[NFTA_RULE_CHAIN_ID]);
return PTR_ERR(chain);
@@ -3459,7 +3463,7 @@ static int nf_tables_newrule(struct sk_buff *skb, const struct nfnl_info *info,
return PTR_ERR(old_rule);
}
} else if (nla[NFTA_RULE_POSITION_ID]) {
- old_rule = nft_rule_lookup_byid(net, nla[NFTA_RULE_POSITION_ID]);
+ old_rule = nft_rule_lookup_byid(net, chain, nla[NFTA_RULE_POSITION_ID]);
if (IS_ERR(old_rule)) {
NL_SET_BAD_ATTR(extack, nla[NFTA_RULE_POSITION_ID]);
return PTR_ERR(old_rule);
@@ -3604,6 +3608,7 @@ err_release_expr:
}
static struct nft_rule *nft_rule_lookup_byid(const struct net *net,
+ const struct nft_chain *chain,
const struct nlattr *nla)
{
struct nftables_pernet *nft_net = nft_pernet(net);
@@ -3614,6 +3619,7 @@ static struct nft_rule *nft_rule_lookup_byid(const struct net *net,
struct nft_rule *rule = nft_trans_rule(trans);
if (trans->msg_type == NFT_MSG_NEWRULE &&
+ trans->ctx.chain == chain &&
id == nft_trans_rule_id(trans))
return rule;
}
@@ -3663,7 +3669,7 @@ static int nf_tables_delrule(struct sk_buff *skb, const struct nfnl_info *info,
err = nft_delrule(&ctx, rule);
} else if (nla[NFTA_RULE_ID]) {
- rule = nft_rule_lookup_byid(net, nla[NFTA_RULE_ID]);
+ rule = nft_rule_lookup_byid(net, chain, nla[NFTA_RULE_ID]);
if (IS_ERR(rule)) {
NL_SET_BAD_ATTR(extack, nla[NFTA_RULE_ID]);
return PTR_ERR(rule);
@@ -3842,6 +3848,7 @@ static struct nft_set *nft_set_lookup_byhandle(const struct nft_table *table,
}
static struct nft_set *nft_set_lookup_byid(const struct net *net,
+ const struct nft_table *table,
const struct nlattr *nla, u8 genmask)
{
struct nftables_pernet *nft_net = nft_pernet(net);
@@ -3853,6 +3860,7 @@ static struct nft_set *nft_set_lookup_byid(const struct net *net,
struct nft_set *set = nft_trans_set(trans);
if (id == nft_trans_set_id(trans) &&
+ set->table == table &&
nft_active_genmask(set, genmask))
return set;
}
@@ -3873,7 +3881,7 @@ struct nft_set *nft_set_lookup_global(const struct net *net,
if (!nla_set_id)
return set;
- set = nft_set_lookup_byid(net, nla_set_id, genmask);
+ set = nft_set_lookup_byid(net, table, nla_set_id, genmask);
}
return set;
}
@@ -5195,19 +5203,13 @@ static int nft_setelem_parse_flags(const struct nft_set *set,
static int nft_setelem_parse_key(struct nft_ctx *ctx, struct nft_set *set,
struct nft_data *key, struct nlattr *attr)
{
- struct nft_data_desc desc;
- int err;
-
- err = nft_data_init(ctx, key, NFT_DATA_VALUE_MAXLEN, &desc, attr);
- if (err < 0)
- return err;
-
- if (desc.type != NFT_DATA_VALUE || desc.len != set->klen) {
- nft_data_release(key, desc.type);
- return -EINVAL;
- }
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = NFT_DATA_VALUE_MAXLEN,
+ .len = set->klen,
+ };
- return 0;
+ return nft_data_init(ctx, key, &desc, attr);
}
static int nft_setelem_parse_data(struct nft_ctx *ctx, struct nft_set *set,
@@ -5216,24 +5218,18 @@ static int nft_setelem_parse_data(struct nft_ctx *ctx, struct nft_set *set,
struct nlattr *attr)
{
u32 dtype;
- int err;
-
- err = nft_data_init(ctx, data, NFT_DATA_VALUE_MAXLEN, desc, attr);
- if (err < 0)
- return err;
if (set->dtype == NFT_DATA_VERDICT)
dtype = NFT_DATA_VERDICT;
else
dtype = NFT_DATA_VALUE;
- if (dtype != desc->type ||
- set->dlen != desc->len) {
- nft_data_release(data, desc->type);
- return -EINVAL;
- }
+ desc->type = dtype;
+ desc->size = NFT_DATA_VALUE_MAXLEN;
+ desc->len = set->dlen;
+ desc->flags = NFT_DATA_DESC_SETELEM;
- return 0;
+ return nft_data_init(ctx, data, desc, attr);
}
static void *nft_setelem_catchall_get(const struct net *net,
@@ -5467,6 +5463,27 @@ err_set_elem_expr:
return ERR_PTR(err);
}
+static int nft_set_ext_check(const struct nft_set_ext_tmpl *tmpl, u8 id, u32 len)
+{
+ len += nft_set_ext_types[id].len;
+ if (len > tmpl->ext_len[id] ||
+ len > U8_MAX)
+ return -1;
+
+ return 0;
+}
+
+static int nft_set_ext_memcpy(const struct nft_set_ext_tmpl *tmpl, u8 id,
+ void *to, const void *from, u32 len)
+{
+ if (nft_set_ext_check(tmpl, id, len) < 0)
+ return -1;
+
+ memcpy(to, from, len);
+
+ return 0;
+}
+
void *nft_set_elem_init(const struct nft_set *set,
const struct nft_set_ext_tmpl *tmpl,
const u32 *key, const u32 *key_end,
@@ -5477,17 +5494,26 @@ void *nft_set_elem_init(const struct nft_set *set,
elem = kzalloc(set->ops->elemsize + tmpl->len, gfp);
if (elem == NULL)
- return NULL;
+ return ERR_PTR(-ENOMEM);
ext = nft_set_elem_ext(set, elem);
nft_set_ext_init(ext, tmpl);
- if (nft_set_ext_exists(ext, NFT_SET_EXT_KEY))
- memcpy(nft_set_ext_key(ext), key, set->klen);
- if (nft_set_ext_exists(ext, NFT_SET_EXT_KEY_END))
- memcpy(nft_set_ext_key_end(ext), key_end, set->klen);
- if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA))
- memcpy(nft_set_ext_data(ext), data, set->dlen);
+ if (nft_set_ext_exists(ext, NFT_SET_EXT_KEY) &&
+ nft_set_ext_memcpy(tmpl, NFT_SET_EXT_KEY,
+ nft_set_ext_key(ext), key, set->klen) < 0)
+ goto err_ext_check;
+
+ if (nft_set_ext_exists(ext, NFT_SET_EXT_KEY_END) &&
+ nft_set_ext_memcpy(tmpl, NFT_SET_EXT_KEY_END,
+ nft_set_ext_key_end(ext), key_end, set->klen) < 0)
+ goto err_ext_check;
+
+ if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA) &&
+ nft_set_ext_memcpy(tmpl, NFT_SET_EXT_DATA,
+ nft_set_ext_data(ext), data, set->dlen) < 0)
+ goto err_ext_check;
+
if (nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION)) {
*nft_set_ext_expiration(ext) = get_jiffies_64() + expiration;
if (expiration == 0)
@@ -5497,6 +5523,11 @@ void *nft_set_elem_init(const struct nft_set *set,
*nft_set_ext_timeout(ext) = timeout;
return elem;
+
+err_ext_check:
+ kfree(elem);
+
+ return ERR_PTR(-EINVAL);
}
static void __nft_set_elem_expr_destroy(const struct nft_ctx *ctx,
@@ -5584,14 +5615,25 @@ err_expr:
}
static int nft_set_elem_expr_setup(struct nft_ctx *ctx,
+ const struct nft_set_ext_tmpl *tmpl,
const struct nft_set_ext *ext,
struct nft_expr *expr_array[],
u32 num_exprs)
{
struct nft_set_elem_expr *elem_expr = nft_set_ext_expr(ext);
+ u32 len = sizeof(struct nft_set_elem_expr);
struct nft_expr *expr;
int i, err;
+ if (num_exprs == 0)
+ return 0;
+
+ for (i = 0; i < num_exprs; i++)
+ len += expr_array[i]->ops->size;
+
+ if (nft_set_ext_check(tmpl, NFT_SET_EXT_EXPRESSIONS, len) < 0)
+ return -EINVAL;
+
for (i = 0; i < num_exprs; i++) {
expr = nft_setelem_expr_at(elem_expr, elem_expr->size);
err = nft_expr_clone(expr, expr_array[i]);
@@ -6054,17 +6096,23 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set,
}
}
- err = -ENOMEM;
elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data,
elem.key_end.val.data, elem.data.val.data,
timeout, expiration, GFP_KERNEL_ACCOUNT);
- if (elem.priv == NULL)
+ if (IS_ERR(elem.priv)) {
+ err = PTR_ERR(elem.priv);
goto err_parse_data;
+ }
ext = nft_set_elem_ext(set, elem.priv);
if (flags)
*nft_set_ext_flags(ext) = flags;
+
if (ulen > 0) {
+ if (nft_set_ext_check(&tmpl, NFT_SET_EXT_USERDATA, ulen) < 0) {
+ err = -EINVAL;
+ goto err_elem_userdata;
+ }
udata = nft_set_ext_userdata(ext);
udata->len = ulen - 1;
nla_memcpy(&udata->data, nla[NFTA_SET_ELEM_USERDATA], ulen);
@@ -6073,14 +6121,14 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set,
*nft_set_ext_obj(ext) = obj;
obj->use++;
}
- err = nft_set_elem_expr_setup(ctx, ext, expr_array, num_exprs);
+ err = nft_set_elem_expr_setup(ctx, &tmpl, ext, expr_array, num_exprs);
if (err < 0)
- goto err_elem_expr;
+ goto err_elem_free;
trans = nft_trans_elem_alloc(ctx, NFT_MSG_NEWSETELEM, set);
if (trans == NULL) {
err = -ENOMEM;
- goto err_elem_expr;
+ goto err_elem_free;
}
ext->genmask = nft_genmask_cur(ctx->net) | NFT_SET_ELEM_BUSY_MASK;
@@ -6126,10 +6174,10 @@ err_set_full:
nft_setelem_remove(ctx->net, set, &elem);
err_element_clash:
kfree(trans);
-err_elem_expr:
+err_elem_free:
if (obj)
obj->use--;
-
+err_elem_userdata:
nf_tables_set_elem_destroy(ctx, set, elem.priv);
err_parse_data:
if (nla[NFTA_SET_ELEM_DATA] != NULL)
@@ -6311,8 +6359,10 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set,
elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data,
elem.key_end.val.data, NULL, 0, 0,
GFP_KERNEL_ACCOUNT);
- if (elem.priv == NULL)
+ if (IS_ERR(elem.priv)) {
+ err = PTR_ERR(elem.priv);
goto fail_elem_key_end;
+ }
ext = nft_set_elem_ext(set, elem.priv);
if (flags)
@@ -9605,7 +9655,7 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data,
tb[NFTA_VERDICT_CHAIN],
genmask);
} else if (tb[NFTA_VERDICT_CHAIN_ID]) {
- chain = nft_chain_lookup_byid(ctx->net,
+ chain = nft_chain_lookup_byid(ctx->net, ctx->table,
tb[NFTA_VERDICT_CHAIN_ID]);
if (IS_ERR(chain))
return PTR_ERR(chain);
@@ -9617,6 +9667,9 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data,
return PTR_ERR(chain);
if (nft_is_base_chain(chain))
return -EOPNOTSUPP;
+ if (desc->flags & NFT_DATA_DESC_SETELEM &&
+ chain->flags & NFT_CHAIN_BINDING)
+ return -EINVAL;
chain->use++;
data->verdict.chain = chain;
@@ -9624,7 +9677,7 @@ static int nft_verdict_init(const struct nft_ctx *ctx, struct nft_data *data,
}
desc->len = sizeof(data->verdict);
- desc->type = NFT_DATA_VERDICT;
+
return 0;
}
@@ -9677,20 +9730,25 @@ nla_put_failure:
}
static int nft_value_init(const struct nft_ctx *ctx,
- struct nft_data *data, unsigned int size,
- struct nft_data_desc *desc, const struct nlattr *nla)
+ struct nft_data *data, struct nft_data_desc *desc,
+ const struct nlattr *nla)
{
unsigned int len;
len = nla_len(nla);
if (len == 0)
return -EINVAL;
- if (len > size)
+ if (len > desc->size)
return -EOVERFLOW;
+ if (desc->len) {
+ if (len != desc->len)
+ return -EINVAL;
+ } else {
+ desc->len = len;
+ }
nla_memcpy(data->data, nla, len);
- desc->type = NFT_DATA_VALUE;
- desc->len = len;
+
return 0;
}
@@ -9710,7 +9768,6 @@ static const struct nla_policy nft_data_policy[NFTA_DATA_MAX + 1] = {
*
* @ctx: context of the expression using the data
* @data: destination struct nft_data
- * @size: maximum data length
* @desc: data description
* @nla: netlink attribute containing data
*
@@ -9720,24 +9777,35 @@ static const struct nla_policy nft_data_policy[NFTA_DATA_MAX + 1] = {
* The caller can indicate that it only wants to accept data of type
* NFT_DATA_VALUE by passing NULL for the ctx argument.
*/
-int nft_data_init(const struct nft_ctx *ctx,
- struct nft_data *data, unsigned int size,
+int nft_data_init(const struct nft_ctx *ctx, struct nft_data *data,
struct nft_data_desc *desc, const struct nlattr *nla)
{
struct nlattr *tb[NFTA_DATA_MAX + 1];
int err;
+ if (WARN_ON_ONCE(!desc->size))
+ return -EINVAL;
+
err = nla_parse_nested_deprecated(tb, NFTA_DATA_MAX, nla,
nft_data_policy, NULL);
if (err < 0)
return err;
- if (tb[NFTA_DATA_VALUE])
- return nft_value_init(ctx, data, size, desc,
- tb[NFTA_DATA_VALUE]);
- if (tb[NFTA_DATA_VERDICT] && ctx != NULL)
- return nft_verdict_init(ctx, data, desc, tb[NFTA_DATA_VERDICT]);
- return -EINVAL;
+ if (tb[NFTA_DATA_VALUE]) {
+ if (desc->type != NFT_DATA_VALUE)
+ return -EINVAL;
+
+ err = nft_value_init(ctx, data, desc, tb[NFTA_DATA_VALUE]);
+ } else if (tb[NFTA_DATA_VERDICT] && ctx != NULL) {
+ if (desc->type != NFT_DATA_VERDICT)
+ return -EINVAL;
+
+ err = nft_verdict_init(ctx, data, desc, tb[NFTA_DATA_VERDICT]);
+ } else {
+ err = -EINVAL;
+ }
+
+ return err;
}
EXPORT_SYMBOL_GPL(nft_data_init);
diff --git a/net/netfilter/nft_bitwise.c b/net/netfilter/nft_bitwise.c
index 83590afe3768..e6e402b247d0 100644
--- a/net/netfilter/nft_bitwise.c
+++ b/net/netfilter/nft_bitwise.c
@@ -93,7 +93,16 @@ static const struct nla_policy nft_bitwise_policy[NFTA_BITWISE_MAX + 1] = {
static int nft_bitwise_init_bool(struct nft_bitwise *priv,
const struct nlattr *const tb[])
{
- struct nft_data_desc mask, xor;
+ struct nft_data_desc mask = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->mask),
+ .len = priv->len,
+ };
+ struct nft_data_desc xor = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->xor),
+ .len = priv->len,
+ };
int err;
if (tb[NFTA_BITWISE_DATA])
@@ -103,37 +112,30 @@ static int nft_bitwise_init_bool(struct nft_bitwise *priv,
!tb[NFTA_BITWISE_XOR])
return -EINVAL;
- err = nft_data_init(NULL, &priv->mask, sizeof(priv->mask), &mask,
- tb[NFTA_BITWISE_MASK]);
+ err = nft_data_init(NULL, &priv->mask, &mask, tb[NFTA_BITWISE_MASK]);
if (err < 0)
return err;
- if (mask.type != NFT_DATA_VALUE || mask.len != priv->len) {
- err = -EINVAL;
- goto err_mask_release;
- }
- err = nft_data_init(NULL, &priv->xor, sizeof(priv->xor), &xor,
- tb[NFTA_BITWISE_XOR]);
+ err = nft_data_init(NULL, &priv->xor, &xor, tb[NFTA_BITWISE_XOR]);
if (err < 0)
- goto err_mask_release;
- if (xor.type != NFT_DATA_VALUE || xor.len != priv->len) {
- err = -EINVAL;
- goto err_xor_release;
- }
+ goto err_xor_err;
return 0;
-err_xor_release:
- nft_data_release(&priv->xor, xor.type);
-err_mask_release:
+err_xor_err:
nft_data_release(&priv->mask, mask.type);
+
return err;
}
static int nft_bitwise_init_shift(struct nft_bitwise *priv,
const struct nlattr *const tb[])
{
- struct nft_data_desc d;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->data),
+ .len = sizeof(u32),
+ };
int err;
if (tb[NFTA_BITWISE_MASK] ||
@@ -143,13 +145,12 @@ static int nft_bitwise_init_shift(struct nft_bitwise *priv,
if (!tb[NFTA_BITWISE_DATA])
return -EINVAL;
- err = nft_data_init(NULL, &priv->data, sizeof(priv->data), &d,
- tb[NFTA_BITWISE_DATA]);
+ err = nft_data_init(NULL, &priv->data, &desc, tb[NFTA_BITWISE_DATA]);
if (err < 0)
return err;
- if (d.type != NFT_DATA_VALUE || d.len != sizeof(u32) ||
- priv->data.data[0] >= BITS_PER_TYPE(u32)) {
- nft_data_release(&priv->data, d.type);
+
+ if (priv->data.data[0] >= BITS_PER_TYPE(u32)) {
+ nft_data_release(&priv->data, desc.type);
return -EINVAL;
}
@@ -339,22 +340,21 @@ static const struct nft_expr_ops nft_bitwise_ops = {
static int
nft_bitwise_extract_u32_data(const struct nlattr * const tb, u32 *out)
{
- struct nft_data_desc desc;
struct nft_data data;
- int err = 0;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(data),
+ .len = sizeof(u32),
+ };
+ int err;
- err = nft_data_init(NULL, &data, sizeof(data), &desc, tb);
+ err = nft_data_init(NULL, &data, &desc, tb);
if (err < 0)
return err;
- if (desc.type != NFT_DATA_VALUE || desc.len != sizeof(u32)) {
- err = -EINVAL;
- goto err;
- }
*out = data.data[0];
-err:
- nft_data_release(&data, desc.type);
- return err;
+
+ return 0;
}
static int nft_bitwise_fast_init(const struct nft_ctx *ctx,
diff --git a/net/netfilter/nft_cmp.c b/net/netfilter/nft_cmp.c
index 777f09e4dc60..963cf831799c 100644
--- a/net/netfilter/nft_cmp.c
+++ b/net/netfilter/nft_cmp.c
@@ -73,20 +73,16 @@ static int nft_cmp_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
const struct nlattr * const tb[])
{
struct nft_cmp_expr *priv = nft_expr_priv(expr);
- struct nft_data_desc desc;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->data),
+ };
int err;
- err = nft_data_init(NULL, &priv->data, sizeof(priv->data), &desc,
- tb[NFTA_CMP_DATA]);
+ err = nft_data_init(NULL, &priv->data, &desc, tb[NFTA_CMP_DATA]);
if (err < 0)
return err;
- if (desc.type != NFT_DATA_VALUE) {
- err = -EINVAL;
- nft_data_release(&priv->data, desc.type);
- return err;
- }
-
err = nft_parse_register_load(tb[NFTA_CMP_SREG], &priv->sreg, desc.len);
if (err < 0)
return err;
@@ -214,12 +210,14 @@ static int nft_cmp_fast_init(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
{
struct nft_cmp_fast_expr *priv = nft_expr_priv(expr);
- struct nft_data_desc desc;
struct nft_data data;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(data),
+ };
int err;
- err = nft_data_init(NULL, &data, sizeof(data), &desc,
- tb[NFTA_CMP_DATA]);
+ err = nft_data_init(NULL, &data, &desc, tb[NFTA_CMP_DATA]);
if (err < 0)
return err;
@@ -313,11 +311,13 @@ static int nft_cmp16_fast_init(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
{
struct nft_cmp16_fast_expr *priv = nft_expr_priv(expr);
- struct nft_data_desc desc;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->data),
+ };
int err;
- err = nft_data_init(NULL, &priv->data, sizeof(priv->data), &desc,
- tb[NFTA_CMP_DATA]);
+ err = nft_data_init(NULL, &priv->data, &desc, tb[NFTA_CMP_DATA]);
if (err < 0)
return err;
@@ -380,8 +380,11 @@ const struct nft_expr_ops nft_cmp16_fast_ops = {
static const struct nft_expr_ops *
nft_cmp_select_ops(const struct nft_ctx *ctx, const struct nlattr * const tb[])
{
- struct nft_data_desc desc;
struct nft_data data;
+ struct nft_data_desc desc = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(data),
+ };
enum nft_cmp_ops op;
u8 sreg;
int err;
@@ -404,14 +407,10 @@ nft_cmp_select_ops(const struct nft_ctx *ctx, const struct nlattr * const tb[])
return ERR_PTR(-EINVAL);
}
- err = nft_data_init(NULL, &data, sizeof(data), &desc,
- tb[NFTA_CMP_DATA]);
+ err = nft_data_init(NULL, &data, &desc, tb[NFTA_CMP_DATA]);
if (err < 0)
return ERR_PTR(err);
- if (desc.type != NFT_DATA_VALUE)
- goto err1;
-
sreg = ntohl(nla_get_be32(tb[NFTA_CMP_SREG]));
if (op == NFT_CMP_EQ || op == NFT_CMP_NEQ) {
@@ -423,9 +422,6 @@ nft_cmp_select_ops(const struct nft_ctx *ctx, const struct nlattr * const tb[])
return &nft_cmp16_fast_ops;
}
return &nft_cmp_ops;
-err1:
- nft_data_release(&data, desc.type);
- return ERR_PTR(-EINVAL);
}
struct nft_expr_type nft_cmp_type __read_mostly = {
diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index 22f70b543fa2..6983e6ddeef9 100644
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -60,7 +60,7 @@ static void *nft_dynset_new(struct nft_set *set, const struct nft_expr *expr,
&regs->data[priv->sreg_key], NULL,
&regs->data[priv->sreg_data],
timeout, 0, GFP_ATOMIC);
- if (elem == NULL)
+ if (IS_ERR(elem))
goto err1;
ext = nft_set_elem_ext(set, elem);
diff --git a/net/netfilter/nft_immediate.c b/net/netfilter/nft_immediate.c
index b80f7b507349..5f28b21abc7d 100644
--- a/net/netfilter/nft_immediate.c
+++ b/net/netfilter/nft_immediate.c
@@ -29,20 +29,36 @@ static const struct nla_policy nft_immediate_policy[NFTA_IMMEDIATE_MAX + 1] = {
[NFTA_IMMEDIATE_DATA] = { .type = NLA_NESTED },
};
+static enum nft_data_types nft_reg_to_type(const struct nlattr *nla)
+{
+ enum nft_data_types type;
+ u8 reg;
+
+ reg = ntohl(nla_get_be32(nla));
+ if (reg == NFT_REG_VERDICT)
+ type = NFT_DATA_VERDICT;
+ else
+ type = NFT_DATA_VALUE;
+
+ return type;
+}
+
static int nft_immediate_init(const struct nft_ctx *ctx,
const struct nft_expr *expr,
const struct nlattr * const tb[])
{
struct nft_immediate_expr *priv = nft_expr_priv(expr);
- struct nft_data_desc desc;
+ struct nft_data_desc desc = {
+ .size = sizeof(priv->data),
+ };
int err;
if (tb[NFTA_IMMEDIATE_DREG] == NULL ||
tb[NFTA_IMMEDIATE_DATA] == NULL)
return -EINVAL;
- err = nft_data_init(ctx, &priv->data, sizeof(priv->data), &desc,
- tb[NFTA_IMMEDIATE_DATA]);
+ desc.type = nft_reg_to_type(tb[NFTA_IMMEDIATE_DREG]);
+ err = nft_data_init(ctx, &priv->data, &desc, tb[NFTA_IMMEDIATE_DATA]);
if (err < 0)
return err;
diff --git a/net/netfilter/nft_range.c b/net/netfilter/nft_range.c
index 66f77484c227..832f0d725a9e 100644
--- a/net/netfilter/nft_range.c
+++ b/net/netfilter/nft_range.c
@@ -51,7 +51,14 @@ static int nft_range_init(const struct nft_ctx *ctx, const struct nft_expr *expr
const struct nlattr * const tb[])
{
struct nft_range_expr *priv = nft_expr_priv(expr);
- struct nft_data_desc desc_from, desc_to;
+ struct nft_data_desc desc_from = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->data_from),
+ };
+ struct nft_data_desc desc_to = {
+ .type = NFT_DATA_VALUE,
+ .size = sizeof(priv->data_to),
+ };
int err;
u32 op;
@@ -61,26 +68,16 @@ static int nft_range_init(const struct nft_ctx *ctx, const struct nft_expr *expr
!tb[NFTA_RANGE_TO_DATA])
return -EINVAL;
- err = nft_data_init(NULL, &priv->data_from, sizeof(priv->data_from),
- &desc_from, tb[NFTA_RANGE_FROM_DATA]);
+ err = nft_data_init(NULL, &priv->data_from, &desc_from,
+ tb[NFTA_RANGE_FROM_DATA]);
if (err < 0)
return err;
- if (desc_from.type != NFT_DATA_VALUE) {
- err = -EINVAL;
- goto err1;
- }
-
- err = nft_data_init(NULL, &priv->data_to, sizeof(priv->data_to),
- &desc_to, tb[NFTA_RANGE_TO_DATA]);
+ err = nft_data_init(NULL, &priv->data_to, &desc_to,
+ tb[NFTA_RANGE_TO_DATA]);
if (err < 0)
goto err1;
- if (desc_to.type != NFT_DATA_VALUE) {
- err = -EINVAL;
- goto err2;
- }
-
if (desc_from.len != desc_to.len) {
err = -EINVAL;
goto err2;
generated by cgit (git 2.34.1) at 2024-07-01 06:26:21 +0000