workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
new file mode 100644
index 000000000..b73983a17
--- /dev/null
+++ b/include/net/netns/xfrm.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_XFRM_H
+#define __NETNS_XFRM_H
+
+#include <linux/list.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/rhashtable-types.h>
+#include <linux/xfrm.h>
+#include <net/dst_ops.h>
+
+struct ctl_table_header;
+
+struct xfrm_policy_hash {
+	struct hlist_head	__rcu *table;
+	unsigned int		hmask;
+	u8			dbits4;
+	u8			sbits4;
+	u8			dbits6;
+	u8			sbits6;
+};
+
+struct xfrm_policy_hthresh {
+	struct work_struct	work;
+	seqlock_t		lock;
+	u8			lbits4;
+	u8			rbits4;
+	u8			lbits6;
+	u8			rbits6;
+};
+
+struct netns_xfrm {
+	struct list_head	state_all;
+	/*
+	 * Hash table to find appropriate SA towards given target (endpoint of
+	 * tunnel or destination of transport mode) allowed by selector.
+	 *
+	 * Main use is finding SA after policy selected tunnel or transport
+	 * mode. Also, it can be used by ah/esp icmp error handler to find
+	 * offending SA.
+	 */
+	struct hlist_head	__rcu *state_bydst;
+	struct hlist_head	__rcu *state_bysrc;
+	struct hlist_head	__rcu *state_byspi;
+	struct hlist_head	__rcu *state_byseq;
+	struct hlist_head	 __percpu *state_cache_input;
+	unsigned int		state_hmask;
+	unsigned int		state_num;
+	struct work_struct	state_hash_work;
+
+	struct list_head	policy_all;
+	struct hlist_head	*policy_byidx;
+	unsigned int		policy_idx_hmask;
+	unsigned int		idx_generator;
+	struct xfrm_policy_hash	policy_bydst[XFRM_POLICY_MAX];
+	unsigned int		policy_count[XFRM_POLICY_MAX * 2];
+	struct work_struct	policy_hash_work;
+	struct xfrm_policy_hthresh policy_hthresh;
+	struct list_head	inexact_bins;
+
+
+	struct sock		__rcu *nlsk;
+	struct sock		*nlsk_stash;
+
+	u32			sysctl_aevent_etime;
+	u32			sysctl_aevent_rseqth;
+	int			sysctl_larval_drop;
+	u32			sysctl_acq_expires;
+
+	u8			policy_default[XFRM_POLICY_MAX];
+
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*sysctl_hdr;
+#endif
+
+	struct dst_ops		xfrm4_dst_ops;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct dst_ops		xfrm6_dst_ops;
+#endif
+	spinlock_t		xfrm_state_lock;
+	seqcount_spinlock_t	xfrm_state_hash_generation;
+	seqcount_spinlock_t	xfrm_policy_hash_generation;
+
+	spinlock_t xfrm_policy_lock;
+	struct mutex xfrm_cfg_mutex;
+	struct delayed_work	nat_keepalive_work;
+};
+
+#endif