[PATCH net 1/3] netfilter: nft_dynset: honor stateful expressions in set definition
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2021-01-27 13:28:57
Also in:
netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
If the set definition contains stateful expressions, allocate them for
the newly added entries from the packet path.
Fixes: 65038428b2c6 ("netfilter: nf_tables: allow to specify stateful expression in set definition")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_tables.h | 2 ++
net/netfilter/nf_tables_api.c | 5 ++---
net/netfilter/nft_dynset.c | 6 ++++++
3 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index f4af8362d234..4b6ecf532623 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h@@ -721,6 +721,8 @@ void *nft_set_elem_init(const struct nft_set *set, const struct nft_set_ext_tmpl *tmpl, const u32 *key, const u32 *key_end, const u32 *data, u64 timeout, u64 expiration, gfp_t gfp); +int nft_set_elem_expr_clone(const struct nft_ctx *ctx, struct nft_set *set, + struct nft_expr *expr_array[]); void nft_set_elem_destroy(const struct nft_set *set, void *elem, bool destroy_expr);
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 15c467f1a9dd..8d3aa97b52e7 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c@@ -5235,9 +5235,8 @@ static void nf_tables_set_elem_destroy(const struct nft_ctx *ctx, kfree(elem); } -static int nft_set_elem_expr_clone(const struct nft_ctx *ctx, - struct nft_set *set, - struct nft_expr *expr_array[]) +int nft_set_elem_expr_clone(const struct nft_ctx *ctx, struct nft_set *set, + struct nft_expr *expr_array[]) { struct nft_expr *expr; int err, i, k;
diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index 0b053f75cd60..86204740f6c7 100644
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c@@ -295,6 +295,12 @@ static int nft_dynset_init(const struct nft_ctx *ctx, err = -EOPNOTSUPP; goto err_expr_free; } + } else if (set->num_exprs > 0) { + err = nft_set_elem_expr_clone(ctx, set, priv->expr_array); + if (err < 0) + return err; + + priv->num_exprs = set->num_exprs; } nft_set_ext_prepare(&priv->tmpl);
--
2.20.1