xfrm.h

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#ifndef __NETNS_XFRM_H
#define __NETNS_XFRM_H

#include <linux/list.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/xfrm.h>
#include <net/dst_ops.h>

struct ctl_table_header;

struct xfrm_policy_hash {
    struct hlist_head   *table;
    unsigned int        hmask;
};

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   *state_bydst;
    struct hlist_head   *state_bysrc;
    struct hlist_head   *state_byspi;
    unsigned int        state_hmask;
    unsigned int        state_num;
    struct work_struct  state_hash_work;
    struct hlist_head   state_gc_list;
    struct work_struct  state_gc_work;

    wait_queue_head_t   km_waitq;

    struct list_head    policy_all;
    struct hlist_head   *policy_byidx;
    unsigned int        policy_idx_hmask;
    struct hlist_head   policy_inexact[XFRM_POLICY_MAX * 2];
    struct xfrm_policy_hash policy_bydst[XFRM_POLICY_MAX * 2];
    unsigned int        policy_count[XFRM_POLICY_MAX * 2];
    struct work_struct  policy_hash_work;


    struct sock     *nlsk;
    struct sock     *nlsk_stash;

    u32         sysctl_aevent_etime;
    u32         sysctl_aevent_rseqth;
    int         sysctl_larval_drop;
    u32         sysctl_acq_expires;
#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
};

#endif