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/* 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;
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;
struct hlist_head policy_inexact[XFRM_POLICY_MAX];
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 *nlsk;
struct sock *nlsk_stash;
u32 sysctl_aevent_etime;
u32 sysctl_aevent_rseqth;
int sysctl_larval_drop;
u32 sysctl_acq_expires;
u8 policy_default;
#define XFRM_POL_DEFAULT_IN 1
#define XFRM_POL_DEFAULT_OUT 2
#define XFRM_POL_DEFAULT_FWD 4
#define XFRM_POL_DEFAULT_MASK 7
#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;
};
#endif
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