netfilter: nf_tables: set backend .flush always succeeds
.flush is always successful since this results from iterating over the
set elements to toggle mark the element as inactive in the next
generation.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 8de040d..d0f5c477 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -449,7 +449,7 @@ struct nft_set_ops {
void * (*deactivate)(const struct net *net,
const struct nft_set *set,
const struct nft_set_elem *elem);
- bool (*flush)(const struct net *net,
+ void (*flush)(const struct net *net,
const struct nft_set *set,
void *priv);
void (*remove)(const struct net *net,
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index ecb251f..35db408 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -7146,17 +7146,13 @@ static int nft_setelem_flush(const struct nft_ctx *ctx,
struct nft_set_elem *elem)
{
struct nft_trans *trans;
- int err;
trans = nft_trans_alloc_gfp(ctx, NFT_MSG_DELSETELEM,
sizeof(struct nft_trans_elem), GFP_ATOMIC);
if (!trans)
return -ENOMEM;
- if (!set->ops->flush(ctx->net, set, elem->priv)) {
- err = -ENOENT;
- goto err1;
- }
+ set->ops->flush(ctx->net, set, elem->priv);
set->ndeact++;
nft_setelem_data_deactivate(ctx->net, set, elem);
@@ -7165,9 +7161,6 @@ static int nft_setelem_flush(const struct nft_ctx *ctx,
nft_trans_commit_list_add_tail(ctx->net, trans);
return 0;
-err1:
- kfree(trans);
- return err;
}
static int __nft_set_catchall_flush(const struct nft_ctx *ctx,
diff --git a/net/netfilter/nft_set_bitmap.c b/net/netfilter/nft_set_bitmap.c
index 1e5e7a1..2ee6e36 100644
--- a/net/netfilter/nft_set_bitmap.c
+++ b/net/netfilter/nft_set_bitmap.c
@@ -174,7 +174,7 @@ static void nft_bitmap_activate(const struct net *net,
nft_set_elem_change_active(net, set, &be->ext);
}
-static bool nft_bitmap_flush(const struct net *net,
+static void nft_bitmap_flush(const struct net *net,
const struct nft_set *set, void *_be)
{
struct nft_bitmap *priv = nft_set_priv(set);
@@ -186,8 +186,6 @@ static bool nft_bitmap_flush(const struct net *net,
/* Enter 10 state, similar to deactivation. */
priv->bitmap[idx] &= ~(genmask << off);
nft_set_elem_change_active(net, set, &be->ext);
-
- return true;
}
static void *nft_bitmap_deactivate(const struct net *net,
diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
index 2013de9..e758b88 100644
--- a/net/netfilter/nft_set_hash.c
+++ b/net/netfilter/nft_set_hash.c
@@ -192,14 +192,12 @@ static void nft_rhash_activate(const struct net *net, const struct nft_set *set,
nft_set_elem_change_active(net, set, &he->ext);
}
-static bool nft_rhash_flush(const struct net *net,
+static void nft_rhash_flush(const struct net *net,
const struct nft_set *set, void *priv)
{
struct nft_rhash_elem *he = priv;
nft_set_elem_change_active(net, set, &he->ext);
-
- return true;
}
static void *nft_rhash_deactivate(const struct net *net,
@@ -590,13 +588,12 @@ static void nft_hash_activate(const struct net *net, const struct nft_set *set,
nft_set_elem_change_active(net, set, &he->ext);
}
-static bool nft_hash_flush(const struct net *net,
+static void nft_hash_flush(const struct net *net,
const struct nft_set *set, void *priv)
{
struct nft_hash_elem *he = priv;
nft_set_elem_change_active(net, set, &he->ext);
- return true;
}
static void *nft_hash_deactivate(const struct net *net,
diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index bea63aa..dba073a 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -1809,14 +1809,12 @@ static void *nft_pipapo_deactivate(const struct net *net,
*
* Return: true if element was found and deactivated.
*/
-static bool nft_pipapo_flush(const struct net *net, const struct nft_set *set,
+static void nft_pipapo_flush(const struct net *net, const struct nft_set *set,
void *elem)
{
struct nft_pipapo_elem *e = elem;
nft_set_elem_change_active(net, set, &e->ext);
-
- return true;
}
/**
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 7d1004f..60ff591 100644
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -535,14 +535,12 @@ static void nft_rbtree_activate(const struct net *net,
nft_set_elem_change_active(net, set, &rbe->ext);
}
-static bool nft_rbtree_flush(const struct net *net,
+static void nft_rbtree_flush(const struct net *net,
const struct nft_set *set, void *priv)
{
struct nft_rbtree_elem *rbe = priv;
nft_set_elem_change_active(net, set, &rbe->ext);
-
- return true;
}
static void *nft_rbtree_deactivate(const struct net *net,
