netdev - [PATCH net-next 13/19] netfilter: nf_tables: Carry reset boolean in nft_obj_dump

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Message-Id: <20231025212555.132775-14-pablo@netfilter.org>
Date: Wed, 25 Oct 2023 23:25:49 +0200
From: Pablo Neira Ayuso <pablo@...filter.org>
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net,
	netdev@...r.kernel.org,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	fw@...len.de
Subject: [PATCH net-next 13/19] netfilter: nf_tables: Carry reset boolean in nft_obj_dump_ctx

From: Phil Sutter <phil@....cc>

Relieve the dump callback from having to inspect nlmsg_type upon each
call, just do it once at start of the dump.

Signed-off-by: Phil Sutter <phil@....cc>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 net/netfilter/nf_tables_api.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index c84e2cc6d3b3..ecb251f6c6a6 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -7685,6 +7685,7 @@ struct nft_obj_dump_ctx {
 	unsigned int	s_idx;
 	char		*table;
 	u32		type;
+	bool		reset;
 };
 
 static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
@@ -7698,12 +7699,8 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 	unsigned int entries = 0;
 	struct nft_object *obj;
 	unsigned int idx = 0;
-	bool reset = false;
 	int rc = 0;
 
-	if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
-		reset = true;
-
 	rcu_read_lock();
 	nft_net = nft_pernet(net);
 	cb->seq = READ_ONCE(nft_net->base_seq);
@@ -7730,7 +7727,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 						     NFT_MSG_NEWOBJ,
 						     NLM_F_MULTI | NLM_F_APPEND,
 						     table->family, table,
-						     obj, reset);
+						     obj, ctx->reset);
 			if (rc < 0)
 				break;
 
@@ -7739,7 +7736,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 cont:
 			idx++;
 		}
-		if (reset && entries)
+		if (ctx->reset && entries)
 			audit_log_obj_reset(table, nft_net->base_seq, entries);
 		if (rc < 0)
 			break;
@@ -7766,6 +7763,9 @@ static int nf_tables_dump_obj_start(struct netlink_callback *cb)
 	if (nla[NFTA_OBJ_TYPE])
 		ctx->type = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
 
+	if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
+		ctx->reset = true;
+
 	return 0;
 }
 
-- 
2.30.2