Merge v6.10.7linux-rolling-stable

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 102 insertions, 45 deletions

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 91cc3a81ba8f..41d7faeb101c 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -7977,6 +7977,19 @@ cont:
 	return skb->len;
 }
 
+static int nf_tables_dumpreset_obj(struct sk_buff *skb,
+				   struct netlink_callback *cb)
+{
+	struct nftables_pernet *nft_net = nft_pernet(sock_net(skb->sk));
+	int ret;
+
+	mutex_lock(&nft_net->commit_mutex);
+	ret = nf_tables_dump_obj(skb, cb);
+	mutex_unlock(&nft_net->commit_mutex);
+
+	return ret;
+}
+
 static int nf_tables_dump_obj_start(struct netlink_callback *cb)
 {
 	struct nft_obj_dump_ctx *ctx = (void *)cb->ctx;
@@ -7993,12 +8006,18 @@ 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;
 }
 
+static int nf_tables_dumpreset_obj_start(struct netlink_callback *cb)
+{
+	struct nft_obj_dump_ctx *ctx = (void *)cb->ctx;
+
+	ctx->reset = true;
+
+	return nf_tables_dump_obj_start(cb);
+}
+
 static int nf_tables_dump_obj_done(struct netlink_callback *cb)
 {
 	struct nft_obj_dump_ctx *ctx = (void *)cb->ctx;
@@ -8009,8 +8028,9 @@ static int nf_tables_dump_obj_done(struct netlink_callback *cb)
 }
 
 /* called with rcu_read_lock held */
-static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info,
-			    const struct nlattr * const nla[])
+static struct sk_buff *
+nf_tables_getobj_single(u32 portid, const struct nfnl_info *info,
+			const struct nlattr * const nla[], bool reset)
 {
 	struct netlink_ext_ack *extack = info->extack;
 	u8 genmask = nft_genmask_cur(info->net);
@@ -8019,72 +8039,109 @@ static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info,
 	struct net *net = info->net;
 	struct nft_object *obj;
 	struct sk_buff *skb2;
-	bool reset = false;
 	u32 objtype;
 	int err;
 
-	if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
-		struct netlink_dump_control c = {
-			.start = nf_tables_dump_obj_start,
-			.dump = nf_tables_dump_obj,
-			.done = nf_tables_dump_obj_done,
-			.module = THIS_MODULE,
-			.data = (void *)nla,
-		};
-
-		return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
-	}
-
 	if (!nla[NFTA_OBJ_NAME] ||
 	    !nla[NFTA_OBJ_TYPE])
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 
 	table = nft_table_lookup(net, nla[NFTA_OBJ_TABLE], family, genmask, 0);
 	if (IS_ERR(table)) {
 		NL_SET_BAD_ATTR(extack, nla[NFTA_OBJ_TABLE]);
-		return PTR_ERR(table);
+		return ERR_CAST(table);
 	}
 
 	objtype = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
 	obj = nft_obj_lookup(net, table, nla[NFTA_OBJ_NAME], objtype, genmask);
 	if (IS_ERR(obj)) {
 		NL_SET_BAD_ATTR(extack, nla[NFTA_OBJ_NAME]);
-		return PTR_ERR(obj);
+		return ERR_CAST(obj);
 	}
 
 	skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC);
 	if (!skb2)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);
 
-	if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
-		reset = true;
+	err = nf_tables_fill_obj_info(skb2, net, portid,
+				      info->nlh->nlmsg_seq, NFT_MSG_NEWOBJ, 0,
+				      family, table, obj, reset);
+	if (err < 0) {
+		kfree_skb(skb2);
+		return ERR_PTR(err);
+	}
 
-	if (reset) {
-		const struct nftables_pernet *nft_net;
-		char *buf;
+	return skb2;
+}
 
-		nft_net = nft_pernet(net);
-		buf = kasprintf(GFP_ATOMIC, "%s:%u", table->name, nft_net->base_seq);
+static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info,
+			    const struct nlattr * const nla[])
+{
+	u32 portid = NETLINK_CB(skb).portid;
+	struct sk_buff *skb2;
 
-		audit_log_nfcfg(buf,
-				family,
-				1,
-				AUDIT_NFT_OP_OBJ_RESET,
-				GFP_ATOMIC);
-		kfree(buf);
+	if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
+		struct netlink_dump_control c = {
+			.start = nf_tables_dump_obj_start,
+			.dump = nf_tables_dump_obj,
+			.done = nf_tables_dump_obj_done,
+			.module = THIS_MODULE,
+			.data = (void *)nla,
+		};
+
+		return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
 	}
 
-	err = nf_tables_fill_obj_info(skb2, net, NETLINK_CB(skb).portid,
-				      info->nlh->nlmsg_seq, NFT_MSG_NEWOBJ, 0,
-				      family, table, obj, reset);
-	if (err < 0)
-		goto err_fill_obj_info;
+	skb2 = nf_tables_getobj_single(portid, info, nla, false);
+	if (IS_ERR(skb2))
+		return PTR_ERR(skb2);
 
-	return nfnetlink_unicast(skb2, net, NETLINK_CB(skb).portid);
+	return nfnetlink_unicast(skb2, info->net, portid);
+}
 
-err_fill_obj_info:
-	kfree_skb(skb2);
-	return err;
+static int nf_tables_getobj_reset(struct sk_buff *skb,
+				  const struct nfnl_info *info,
+				  const struct nlattr * const nla[])
+{
+	struct nftables_pernet *nft_net = nft_pernet(info->net);
+	u32 portid = NETLINK_CB(skb).portid;
+	struct net *net = info->net;
+	struct sk_buff *skb2;
+	char *buf;
+
+	if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
+		struct netlink_dump_control c = {
+			.start = nf_tables_dumpreset_obj_start,
+			.dump = nf_tables_dumpreset_obj,
+			.done = nf_tables_dump_obj_done,
+			.module = THIS_MODULE,
+			.data = (void *)nla,
+		};
+
+		return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
+	}
+
+	if (!try_module_get(THIS_MODULE))
+		return -EINVAL;
+	rcu_read_unlock();
+	mutex_lock(&nft_net->commit_mutex);
+	skb2 = nf_tables_getobj_single(portid, info, nla, true);
+	mutex_unlock(&nft_net->commit_mutex);
+	rcu_read_lock();
+	module_put(THIS_MODULE);
+
+	if (IS_ERR(skb2))
+		return PTR_ERR(skb2);
+
+	buf = kasprintf(GFP_ATOMIC, "%.*s:%u",
+			nla_len(nla[NFTA_OBJ_TABLE]),
+			(char *)nla_data(nla[NFTA_OBJ_TABLE]),
+			nft_net->base_seq);
+	audit_log_nfcfg(buf, info->nfmsg->nfgen_family, 1,
+			AUDIT_NFT_OP_OBJ_RESET, GFP_ATOMIC);
+	kfree(buf);
+
+	return nfnetlink_unicast(skb2, net, portid);
 }
 
 static void nft_obj_destroy(const struct nft_ctx *ctx, struct nft_object *obj)
@@ -9367,7 +9424,7 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {
 		.policy		= nft_obj_policy,
 	},
 	[NFT_MSG_GETOBJ_RESET] = {
-		.call		= nf_tables_getobj,
+		.call		= nf_tables_getobj_reset,
 		.type		= NFNL_CB_RCU,
 		.attr_count	= NFTA_OBJ_MAX,
 		.policy		= nft_obj_policy,