Release 4.11 net/xfrm/xfrm_state.c

/*
 * xfrm_state.c
 *
 * Changes:
 *      Mitsuru KANDA @USAGI
 *      Kazunori MIYAZAWA @USAGI
 *      Kunihiro Ishiguro <kunihiro@ipinfusion.com>
 *              IPv6 support
 *      YOSHIFUJI Hideaki @USAGI
 *              Split up af-specific functions
 *      Derek Atkins <derek@ihtfp.com>
 *              Add UDP Encapsulation
 *
 */

#include <linux/workqueue.h>
#include <net/xfrm.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
#include <linux/module.h>
#include <linux/cache.h>
#include <linux/audit.h>
#include <linux/uaccess.h>
#include <linux/ktime.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>

#include "xfrm_hash.h"


#define xfrm_state_deref_prot(table, net) \
	rcu_dereference_protected((table), lockdep_is_held(&(net)->xfrm.xfrm_state_lock))

static void xfrm_state_gc_task(struct work_struct *work);

/* Each xfrm_state may be linked to two tables:

   1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
   2. Hash table by (daddr,family,reqid) to find what SAs exist for given
      destination/tunnel endpoint. (output)
 */


static unsigned int xfrm_state_hashmax __read_mostly = 1 * 1024 * 1024;

static __read_mostly seqcount_t xfrm_state_hash_generation = SEQCNT_ZERO(xfrm_state_hash_generation);

static DECLARE_WORK(xfrm_state_gc_work, xfrm_state_gc_task);
static HLIST_HEAD(xfrm_state_gc_list);



static inline bool xfrm_state_hold_rcu(struct xfrm_state __rcu *x)
{
	return atomic_inc_not_zero(&x->refcnt);
}

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static inline unsigned int xfrm_dst_hash(struct net *net,
					 const xfrm_address_t *daddr,
					 const xfrm_address_t *saddr,
					 u32 reqid,
					 unsigned short family)
{
	return __xfrm_dst_hash(daddr, saddr, reqid, family, net->xfrm.state_hmask);
}

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David S. Miller
38
79.17%
5
71.43%
Alexey Dobriyan
10
20.83%
2
28.57%
Total
48
100.00%
7
100.00%



static inline unsigned int xfrm_src_hash(struct net *net,
					 const xfrm_address_t *daddr,
					 const xfrm_address_t *saddr,
					 unsigned short family)
{
	return __xfrm_src_hash(daddr, saddr, family, net->xfrm.state_hmask);
}

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David S. Miller
24
55.81%
4
50.00%
Alexey Dobriyan
10
23.26%
2
25.00%
Masahide Nakamura
8
18.60%
1
12.50%
Hideaki Yoshifuji / 吉藤英明
1
2.33%
1
12.50%
Total
43
100.00%
8
100.00%


static inline unsigned int

xfrm_spi_hash(struct net *net, const xfrm_address_t *daddr,
	      __be32 spi, u8 proto, unsigned short family)
{
	return __xfrm_spi_hash(daddr, spi, proto, family, net->xfrm.state_hmask);
}

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David S. Miller
35
76.09%
4
57.14%
Alexey Dobriyan
10
21.74%
2
28.57%
Al Viro
1
2.17%
1
14.29%
Total
46
100.00%
7
100.00%



static void xfrm_hash_transfer(struct hlist_head *list,
			       struct hlist_head *ndsttable,
			       struct hlist_head *nsrctable,
			       struct hlist_head *nspitable,
			       unsigned int nhashmask)
{
	struct hlist_node *tmp;
	struct xfrm_state *x;

	hlist_for_each_entry_safe(x, tmp, list, bydst) {
		unsigned int h;

		h = __xfrm_dst_hash(&x->id.daddr, &x->props.saddr,
				    x->props.reqid, x->props.family,
				    nhashmask);
		hlist_add_head_rcu(&x->bydst, ndsttable + h);

		h = __xfrm_src_hash(&x->id.daddr, &x->props.saddr,
				    x->props.family,
				    nhashmask);
		hlist_add_head_rcu(&x->bysrc, nsrctable + h);

		if (x->id.spi) {
			h = __xfrm_spi_hash(&x->id.daddr, x->id.spi,
					    x->id.proto, x->props.family,
					    nhashmask);
			hlist_add_head_rcu(&x->byspi, nspitable + h);
		}
	}
}

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David S. Miller
174
89.69%
3
50.00%
Masahide Nakamura
17
8.76%
2
33.33%
Florian Westphal
3
1.55%
1
16.67%
Total
194
100.00%
6
100.00%



static unsigned long xfrm_hash_new_size(unsigned int state_hmask)
{
	return ((state_hmask + 1) << 1) * sizeof(struct hlist_head);
}

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David S. Miller
24
85.71%
1
33.33%
Alexey Dobriyan
4
14.29%
2
66.67%
Total
28
100.00%
3
100.00%



static void xfrm_hash_resize(struct work_struct *work)
{
	struct net *net = container_of(work, struct net, xfrm.state_hash_work);
	struct hlist_head *ndst, *nsrc, *nspi, *odst, *osrc, *ospi;
	unsigned long nsize, osize;
	unsigned int nhashmask, ohashmask;
	int i;

	nsize = xfrm_hash_new_size(net->xfrm.state_hmask);
	ndst = xfrm_hash_alloc(nsize);
	if (!ndst)
		return;
	nsrc = xfrm_hash_alloc(nsize);
	if (!nsrc) {
		xfrm_hash_free(ndst, nsize);
		return;
	}
	nspi = xfrm_hash_alloc(nsize);
	if (!nspi) {
		xfrm_hash_free(ndst, nsize);
		xfrm_hash_free(nsrc, nsize);
		return;
	}

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	write_seqcount_begin(&xfrm_state_hash_generation);

	nhashmask = (nsize / sizeof(struct hlist_head)) - 1U;
	odst = xfrm_state_deref_prot(net->xfrm.state_bydst, net);
	for (i = net->xfrm.state_hmask; i >= 0; i--)
		xfrm_hash_transfer(odst + i, ndst, nsrc, nspi, nhashmask);

	osrc = xfrm_state_deref_prot(net->xfrm.state_bysrc, net);
	ospi = xfrm_state_deref_prot(net->xfrm.state_byspi, net);
	ohashmask = net->xfrm.state_hmask;

	rcu_assign_pointer(net->xfrm.state_bydst, ndst);
	rcu_assign_pointer(net->xfrm.state_bysrc, nsrc);
	rcu_assign_pointer(net->xfrm.state_byspi, nspi);
	net->xfrm.state_hmask = nhashmask;

	write_seqcount_end(&xfrm_state_hash_generation);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);

	osize = (ohashmask + 1) * sizeof(struct hlist_head);

	synchronize_rcu();

	xfrm_hash_free(odst, osize);
	xfrm_hash_free(osrc, osize);
	xfrm_hash_free(ospi, osize);
}

Contributors
Person
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CommitProp
David S. Miller
213
62.28%
3
21.43%
Alexey Dobriyan
65
19.01%
5
35.71%
Florian Westphal
51
14.91%
3
21.43%
Fan Du
8
2.34%
1
7.14%
Ying Xue
3
0.88%
1
7.14%
David Howells
2
0.58%
1
7.14%
Total
342
100.00%
14
100.00%

static DEFINE_SPINLOCK(xfrm_state_afinfo_lock);

static struct xfrm_state_afinfo __rcu *xfrm_state_afinfo[NPROTO];

static DEFINE_SPINLOCK(xfrm_state_gc_lock);

int __xfrm_state_delete(struct xfrm_state *x);

int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);
bool km_is_alive(const struct km_event *c);
void km_state_expired(struct xfrm_state *x, int hard, u32 portid);

static DEFINE_SPINLOCK(xfrm_type_lock);


int xfrm_register_type(const struct xfrm_type *type, unsigned short family)
{
	struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
	const struct xfrm_type **typemap;
	int err = 0;

	if (unlikely(afinfo == NULL))
		return -EAFNOSUPPORT;
	typemap = afinfo->type_map;
	spin_lock_bh(&xfrm_type_lock);

	if (likely(typemap[type->proto] == NULL))
		typemap[type->proto] = type;
	else
		err = -EEXIST;
	spin_unlock_bh(&xfrm_type_lock);
	rcu_read_unlock();
	return err;
}
Contributors
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CommitProp
Herbert Xu
86
83.50%
1
25.00%
Américo Wang
13
12.62%
1
25.00%
Florian Westphal
2
1.94%
1
25.00%
Eric Dumazet
2
1.94%
1
25.00%
Total
103
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_register_type);



int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family)
{
	struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
	const struct xfrm_type **typemap;
	int err = 0;

	if (unlikely(afinfo == NULL))
		return -EAFNOSUPPORT;
	typemap = afinfo->type_map;
	spin_lock_bh(&xfrm_type_lock);

	if (unlikely(typemap[type->proto] != type))
		err = -ENOENT;
	else
		typemap[type->proto] = NULL;
	spin_unlock_bh(&xfrm_type_lock);
	rcu_read_unlock();
	return err;
}
Contributors
Person
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CommitProp
Herbert Xu
86
83.50%
1
25.00%
Américo Wang
13
12.62%
1
25.00%
Florian Westphal
2
1.94%
1
25.00%
Eric Dumazet
2
1.94%
1
25.00%
Total
103
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_unregister_type);



static const struct xfrm_type *xfrm_get_type(u8 proto, unsigned short family)
{
	struct xfrm_state_afinfo *afinfo;
	const struct xfrm_type **typemap;
	const struct xfrm_type *type;
	int modload_attempted = 0;

retry:
	afinfo = xfrm_state_get_afinfo(family);
	if (unlikely(afinfo == NULL))
		return NULL;
	typemap = afinfo->type_map;

	type = READ_ONCE(typemap[proto]);
	if (unlikely(type && !try_module_get(type->owner)))
		type = NULL;

	rcu_read_unlock();

	if (!type && !modload_attempted) {
		request_module("xfrm-type-%d-%d", family, proto);
		modload_attempted = 1;
		goto retry;
	}

	return type;
}

Contributors
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Herbert Xu
118
92.91%
1
33.33%
Florian Westphal
6
4.72%
1
33.33%
Eric Dumazet
3
2.36%
1
33.33%
Total
127
100.00%
3
100.00%



static void xfrm_put_type(const struct xfrm_type *type)
{
	module_put(type->owner);
}

Contributors
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Herbert Xu
18
94.74%
1
50.00%
Eric Dumazet
1
5.26%
1
50.00%
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19
100.00%
2
100.00%

static DEFINE_SPINLOCK(xfrm_mode_lock);


int xfrm_register_mode(struct xfrm_mode *mode, int family)
{
	struct xfrm_state_afinfo *afinfo;
	struct xfrm_mode **modemap;
	int err;

	if (unlikely(mode->encap >= XFRM_MODE_MAX))
		return -EINVAL;

	afinfo = xfrm_state_get_afinfo(family);
	if (unlikely(afinfo == NULL))
		return -EAFNOSUPPORT;

	err = -EEXIST;
	modemap = afinfo->mode_map;
	spin_lock_bh(&xfrm_mode_lock);
	if (modemap[mode->encap])
		goto out;

	err = -ENOENT;
	if (!try_module_get(afinfo->owner))
		goto out;

	mode->afinfo = afinfo;
	modemap[mode->encap] = mode;
	err = 0;

out:
	spin_unlock_bh(&xfrm_mode_lock);
	rcu_read_unlock();
	return err;
}
Contributors
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Herbert Xu
127
89.44%
2
50.00%
Américo Wang
13
9.15%
1
25.00%
Florian Westphal
2
1.41%
1
25.00%
Total
142
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_register_mode);



int xfrm_unregister_mode(struct xfrm_mode *mode, int family)
{
	struct xfrm_state_afinfo *afinfo;
	struct xfrm_mode **modemap;
	int err;

	if (unlikely(mode->encap >= XFRM_MODE_MAX))
		return -EINVAL;

	afinfo = xfrm_state_get_afinfo(family);
	if (unlikely(afinfo == NULL))
		return -EAFNOSUPPORT;

	err = -ENOENT;
	modemap = afinfo->mode_map;
	spin_lock_bh(&xfrm_mode_lock);
	if (likely(modemap[mode->encap] == mode)) {
		modemap[mode->encap] = NULL;
		module_put(mode->afinfo->owner);
		err = 0;
	}

	spin_unlock_bh(&xfrm_mode_lock);
	rcu_read_unlock();
	return err;
}
Contributors
Person
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CommitProp
Herbert Xu
114
88.37%
2
50.00%
Américo Wang
13
10.08%
1
25.00%
Florian Westphal
2
1.55%
1
25.00%
Total
129
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_unregister_mode);



static struct xfrm_mode *xfrm_get_mode(unsigned int encap, int family)
{
	struct xfrm_state_afinfo *afinfo;
	struct xfrm_mode *mode;
	int modload_attempted = 0;

	if (unlikely(encap >= XFRM_MODE_MAX))
		return NULL;

retry:
	afinfo = xfrm_state_get_afinfo(family);
	if (unlikely(afinfo == NULL))
		return NULL;

	mode = READ_ONCE(afinfo->mode_map[encap]);
	if (unlikely(mode && !try_module_get(mode->owner)))
		mode = NULL;

	rcu_read_unlock();
	if (!mode && !modload_attempted) {
		request_module("xfrm-mode-%d-%d", family, encap);
		modload_attempted = 1;
		goto retry;
	}

	return mode;
}

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Herbert Xu
120
95.24%
1
50.00%
Florian Westphal
6
4.76%
1
50.00%
Total
126
100.00%
2
100.00%



static void xfrm_put_mode(struct xfrm_mode *mode)
{
	module_put(mode->owner);
}

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Herbert Xu
18
100.00%
1
100.00%
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18
100.00%
1
100.00%



static void xfrm_state_gc_destroy(struct xfrm_state *x)
{
	tasklet_hrtimer_cancel(&x->mtimer);
	del_timer_sync(&x->rtimer);
	kfree(x->aead);
	kfree(x->aalg);
	kfree(x->ealg);
	kfree(x->calg);
	kfree(x->encap);
	kfree(x->coaddr);
	kfree(x->replay_esn);
	kfree(x->preplay_esn);
	if (x->inner_mode)
		xfrm_put_mode(x->inner_mode);
	if (x->inner_mode_iaf)
		xfrm_put_mode(x->inner_mode_iaf);
	if (x->outer_mode)
		xfrm_put_mode(x->outer_mode);
	if (x->type) {
		x->type->destructor(x);
		xfrm_put_type(x->type);
	}
	security_xfrm_state_free(x);
	kfree(x);
}

Contributors
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James Morris
74
47.44%
2
16.67%
Herbert Xu
26
16.67%
2
16.67%
Steffen Klassert
14
8.97%
1
8.33%
Kazunori Miyazawa
13
8.33%
1
8.33%
Ilan Tayari
7
4.49%
1
8.33%
Noriaki Takamiya
7
4.49%
1
8.33%
Jamal Hadi Salim
7
4.49%
1
8.33%
Trent Jaeger
5
3.21%
1
8.33%
Yury Polyanskiy
2
1.28%
1
8.33%
David S. Miller
1
0.64%
1
8.33%
Total
156
100.00%
12
100.00%



static void xfrm_state_gc_task(struct work_struct *work)
{
	struct xfrm_state *x;
	struct hlist_node *tmp;
	struct hlist_head gc_list;

	spin_lock_bh(&xfrm_state_gc_lock);
	hlist_move_list(&xfrm_state_gc_list, &gc_list);
	spin_unlock_bh(&xfrm_state_gc_lock);

	synchronize_rcu();

	hlist_for_each_entry_safe(x, tmp, &gc_list, gclist)
		xfrm_state_gc_destroy(x);
}

Contributors
Person
Tokens
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James Morris
41
64.06%
1
12.50%
Herbert Xu
14
21.88%
2
25.00%
Florian Westphal
4
6.25%
2
25.00%
David S. Miller
2
3.12%
1
12.50%
David Howells
2
3.12%
1
12.50%
Alexey Dobriyan
1
1.56%
1
12.50%
Total
64
100.00%
8
100.00%



static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
{
	struct tasklet_hrtimer *thr = container_of(me, struct tasklet_hrtimer, timer);
	struct xfrm_state *x = container_of(thr, struct xfrm_state, mtimer);
	unsigned long now = get_seconds();
	long next = LONG_MAX;
	int warn = 0;
	int err = 0;

	spin_lock(&x->lock);
	if (x->km.state == XFRM_STATE_DEAD)
		goto out;
	if (x->km.state == XFRM_STATE_EXPIRED)
		goto expired;
	if (x->lft.hard_add_expires_seconds) {
		long tmo = x->lft.hard_add_expires_seconds +
			x->curlft.add_time - now;
		if (tmo <= 0) {
			if (x->xflags & XFRM_SOFT_EXPIRE) {
				/* enter hard expire without soft expire first?!
                                 * setting a new date could trigger this.
                                 * workaround: fix x->curflt.add_time by below:
                                 */
				x->curlft.add_time = now - x->saved_tmo - 1;
				tmo = x->lft.hard_add_expires_seconds - x->saved_tmo;
			} else
				goto expired;
		}
		if (tmo < next)
			next = tmo;
	}
	if (x->lft.hard_use_expires_seconds) {
		long tmo = x->lft.hard_use_expires_seconds +
			(x->curlft.use_time ? : now) - now;
		if (tmo <= 0)
			goto expired;
		if (tmo < next)
			next = tmo;
	}
	if (x->km.dying)
		goto resched;
	if (x->lft.soft_add_expires_seconds) {
		long tmo = x->lft.soft_add_expires_seconds +
			x->curlft.add_time - now;
		if (tmo <= 0) {
			warn = 1;
			x->xflags &= ~XFRM_SOFT_EXPIRE;
		} else if (tmo < next) {
			next = tmo;
			x->xflags |= XFRM_SOFT_EXPIRE;
			x->saved_tmo = tmo;
		}
	}
	if (x->lft.soft_use_expires_seconds) {
		long tmo = x->lft.soft_use_expires_seconds +
			(x->curlft.use_time ? : now) - now;
		if (tmo <= 0)
			warn = 1;
		else if (tmo < next)
			next = tmo;
	}

	x->km.dying = warn;
	if (warn)
		km_state_expired(x, 0, 0);
resched:
	if (next != LONG_MAX) {
		tasklet_hrtimer_start(&x->mtimer, ktime_set(next, 0), HRTIMER_MODE_REL);
	}

	goto out;

expired:
	if (x->km.state == XFRM_STATE_ACQ && x->id.spi == 0)
		x->km.state = XFRM_STATE_EXPIRED;

	err = __xfrm_state_delete(x);
	if (!err)
		km_state_expired(x, 1, 0);

	xfrm_audit_state_delete(x, err ? 0 : 1, true);

out:
	spin_unlock(&x->lock);
	return HRTIMER_NORESTART;
}

Contributors
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Alexey Kuznetsov
332
66.94%
2
13.33%
Fan Du
62
12.50%
1
6.67%
Yury Polyanskiy
40
8.06%
1
6.67%
Joy Latten
24
4.84%
2
13.33%
Herbert Xu
18
3.63%
2
13.33%
David S. Miller
12
2.42%
3
20.00%
Jamal Hadi Salim
4
0.81%
1
6.67%
James Morris
2
0.40%
1
6.67%
Alexander Alemayhu
1
0.20%
1
6.67%
Tetsuo Handa
1
0.20%
1
6.67%
Total
496
100.00%
15
100.00%

static void xfrm_replay_timer_handler(unsigned long data);



struct xfrm_state *xfrm_state_alloc(struct net *net)
{
	struct xfrm_state *x;

	x = kzalloc(sizeof(struct xfrm_state), GFP_ATOMIC);

	if (x) {
		write_pnet(&x->xs_net, net);
		atomic_set(&x->refcnt, 1);
		atomic_set(&x->tunnel_users, 0);
		INIT_LIST_HEAD(&x->km.all);
		INIT_HLIST_NODE(&x->bydst);
		INIT_HLIST_NODE(&x->bysrc);
		INIT_HLIST_NODE(&x->byspi);
		tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler,
					CLOCK_BOOTTIME, HRTIMER_MODE_ABS);
		setup_timer(&x->rtimer, xfrm_replay_timer_handler,
				(unsigned long)x);
		x->curlft.add_time = get_seconds();
		x->lft.soft_byte_limit = XFRM_INF;
		x->lft.soft_packet_limit = XFRM_INF;
		x->lft.hard_byte_limit = XFRM_INF;
		x->lft.hard_packet_limit = XFRM_INF;
		x->replay_maxage = 0;
		x->replay_maxdiff = 0;
		x->inner_mode = NULL;
		x->inner_mode_iaf = NULL;
		spin_lock_init(&x->lock);
	}
	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
107
51.94%
2
12.50%
Jamal Hadi Salim
24
11.65%
1
6.25%
Alexey Dobriyan
14
6.80%
1
6.25%
Kazunori Miyazawa
12
5.83%
1
6.25%
James Morris
12
5.83%
2
12.50%
Timo Teräs
8
3.88%
1
6.25%
Pavel Emelyanov
7
3.40%
1
6.25%
Masahide Nakamura
7
3.40%
1
6.25%
Yury Polyanskiy
4
1.94%
1
6.25%
Andrew Morton
4
1.94%
1
6.25%
David S. Miller
3
1.46%
1
6.25%
Herbert Xu
2
0.97%
1
6.25%
Panagiotis Issaris
1
0.49%
1
6.25%
Fan Du
1
0.49%
1
6.25%
Total
206
100.00%
16
100.00%


EXPORT_SYMBOL(xfrm_state_alloc);



void __xfrm_state_destroy(struct xfrm_state *x)
{
	WARN_ON(x->km.state != XFRM_STATE_DEAD);

	spin_lock_bh(&xfrm_state_gc_lock);
	hlist_add_head(&x->gclist, &xfrm_state_gc_list);
	spin_unlock_bh(&xfrm_state_gc_lock);
	schedule_work(&xfrm_state_gc_work);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
29
58.00%
3
33.33%
James Morris
10
20.00%
1
11.11%
Derek Atkins
5
10.00%
1
11.11%
Florian Westphal
2
4.00%
1
11.11%
Ilpo Järvinen
2
4.00%
1
11.11%
Herbert Xu
2
4.00%
2
22.22%
Total
50
100.00%
9
100.00%


EXPORT_SYMBOL(__xfrm_state_destroy);



int __xfrm_state_delete(struct xfrm_state *x)
{
	struct net *net = xs_net(x);
	int err = -ESRCH;

	if (x->km.state != XFRM_STATE_DEAD) {
		x->km.state = XFRM_STATE_DEAD;
		spin_lock(&net->xfrm.xfrm_state_lock);
		list_del(&x->km.all);
		hlist_del_rcu(&x->bydst);
		hlist_del_rcu(&x->bysrc);
		if (x->id.spi)
			hlist_del_rcu(&x->byspi);
		net->xfrm.state_num--;
		spin_unlock(&net->xfrm.xfrm_state_lock);

		/* All xfrm_state objects are created by xfrm_state_alloc.
                 * The xfrm_state_alloc call gives a reference, and that
                 * is what we are dropping here.
                 */
		xfrm_state_put(x);
		err = 0;
	}

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
62
48.44%
3
18.75%
Alexey Dobriyan
15
11.72%
2
12.50%
Jamal Hadi Salim
14
10.94%
1
6.25%
Herbert Xu
11
8.59%
3
18.75%
Fan Du
8
6.25%
1
6.25%
Masahide Nakamura
7
5.47%
1
6.25%
James Morris
5
3.91%
2
12.50%
Florian Westphal
3
2.34%
1
6.25%
David S. Miller
2
1.56%
1
6.25%
Patrick McHardy
1
0.78%
1
6.25%
Total
128
100.00%
16
100.00%


EXPORT_SYMBOL(__xfrm_state_delete);



int xfrm_state_delete(struct xfrm_state *x)
{
	int err;

	spin_lock_bh(&x->lock);
	err = __xfrm_state_delete(x);
	spin_unlock_bh(&x->lock);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
30
76.92%
1
50.00%
Jamal Hadi Salim
9
23.08%
1
50.00%
Total
39
100.00%
2
100.00%


EXPORT_SYMBOL(xfrm_state_delete);

#ifdef CONFIG_SECURITY_NETWORK_XFRM

static inline int

xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid)
{
	int i, err = 0;

	for (i = 0; i <= net->xfrm.state_hmask; i++) {
		struct xfrm_state *x;

		hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) {
			if (xfrm_id_proto_match(x->id.proto, proto) &&
			   (err = security_xfrm_state_delete(x)) != 0) {
				xfrm_audit_state_delete(x, 0, task_valid);
				return err;
			}
		}
	}

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
78
78.00%
3
42.86%
Alexey Dobriyan
11
11.00%
2
28.57%
Alexey Kuznetsov
8
8.00%
1
14.29%
Tetsuo Handa
3
3.00%
1
14.29%
Total
100
100.00%
7
100.00%

#else

static inline int

xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid)
{
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
14
66.67%
2
50.00%
Alexey Dobriyan
5
23.81%
1
25.00%
Tetsuo Handa
2
9.52%
1
25.00%
Total
21
100.00%
4
100.00%

#endif



int xfrm_state_flush(struct net *net, u8 proto, bool task_valid)
{
	int i, err = 0, cnt = 0;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	err = xfrm_state_flush_secctx_check(net, proto, task_valid);
	if (err)
		goto out;

	err = -ESRCH;
	for (i = 0; i <= net->xfrm.state_hmask; i++) {
		struct xfrm_state *x;
restart:
		hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) {
			if (!xfrm_state_kern(x) &&
			    xfrm_id_proto_match(x->id.proto, proto)) {
				xfrm_state_hold(x);
				spin_unlock_bh(&net->xfrm.xfrm_state_lock);

				err = xfrm_state_delete(x);
				xfrm_audit_state_delete(x, err ? 0 : 1,
							task_valid);
				xfrm_state_put(x);
				if (!err)
					cnt++;

				spin_lock_bh(&net->xfrm.xfrm_state_lock);
				goto restart;
			}
		}
	}
	if (cnt)
		err = 0;

out:
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
58
28.86%
3
20.00%
David S. Miller
58
28.86%
2
13.33%
Alexey Kuznetsov
29
14.43%
2
13.33%
Jamal Hadi Salim
21
10.45%
1
6.67%
Alexey Dobriyan
17
8.46%
3
20.00%
Fan Du
12
5.97%
1
6.67%
Tetsuo Handa
4
1.99%
1
6.67%
Masahide Nakamura
1
0.50%
1
6.67%
James Morris
1
0.50%
1
6.67%
Total
201
100.00%
15
100.00%


EXPORT_SYMBOL(xfrm_state_flush);



void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si)
{
	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	si->sadcnt = net->xfrm.state_num;
	si->sadhcnt = net->xfrm.state_hmask;
	si->sadhmcnt = xfrm_state_hashmax;
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
38
62.30%
2
33.33%
Alexey Dobriyan
15
24.59%
3
50.00%
Fan Du
8
13.11%
1
16.67%
Total
61
100.00%
6
100.00%


EXPORT_SYMBOL(xfrm_sad_getinfo);


static void

xfrm_init_tempstate(struct xfrm_state *x, const struct flowi *fl,
		    const struct xfrm_tmpl *tmpl,
		    const xfrm_address_t *daddr, const xfrm_address_t *saddr,
		    unsigned short family)
{
	struct xfrm_state_afinfo *afinfo = xfrm_state_afinfo_get_rcu(family);

	if (!afinfo)
		return;

	afinfo->init_tempsel(&x->sel, fl);

	if (family != tmpl->encap_family) {
		afinfo = xfrm_state_afinfo_get_rcu(tmpl->encap_family);
		if (!afinfo)
			return;
	}
	afinfo->init_temprop(x, tmpl, daddr, saddr);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
63
61.17%
4
57.14%
Thomas Egerer
34
33.01%
1
14.29%
Florian Westphal
6
5.83%
2
28.57%
Total
103
100.00%
7
100.00%



static struct xfrm_state *__xfrm_state_lookup(struct net *net, u32 mark,
					      const xfrm_address_t *daddr,
					      __be32 spi, u8 proto,
					      unsigned short family)
{
	unsigned int h = xfrm_spi_hash(net, daddr, spi, proto, family);
	struct xfrm_state *x;

	hlist_for_each_entry_rcu(x, net->xfrm.state_byspi + h, byspi) {
		if (x->props.family != family ||
		    x->id.spi       != spi ||
		    x->id.proto     != proto ||
		    !xfrm_addr_equal(&x->id.daddr, daddr, family))
			continue;

		if ((mark & x->mark.m) != x->mark.v)
			continue;
		if (!xfrm_state_hold_rcu(x))
			continue;
		return x;
	}

	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
94
67.63%
2
18.18%
Jamal Hadi Salim
22
15.83%
2
18.18%
Florian Westphal
8
5.76%
2
18.18%
Alexey Dobriyan
7
5.04%
2
18.18%
Wei Yongjun
5
3.60%
1
9.09%
Hideaki Yoshifuji / 吉藤英明
2
1.44%
1
9.09%
Al Viro
1
0.72%
1
9.09%
Total
139
100.00%
11
100.00%



static struct xfrm_state *__xfrm_state_lookup_byaddr(struct net *net, u32 mark,
						     const xfrm_address_t *daddr,
						     const xfrm_address_t *saddr,
						     u8 proto, unsigned short family)
{
	unsigned int h = xfrm_src_hash(net, daddr, saddr, family);
	struct xfrm_state *x;

	hlist_for_each_entry_rcu(x, net->xfrm.state_bysrc + h, bysrc) {
		if (x->props.family != family ||
		    x->id.proto     != proto ||
		    !xfrm_addr_equal(&x->id.daddr, daddr, family) ||
		    !xfrm_addr_equal(&x->props.saddr, saddr, family))
			continue;

		if ((mark & x->mark.m) != x->mark.v)
			continue;
		if (!xfrm_state_hold_rcu(x))
			continue;
		return x;
	}

	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
79
54.11%
3
18.75%
Jamal Hadi Salim
22
15.07%
2
12.50%
Wei Yongjun
10
6.85%
1
6.25%
Alexey Kuznetsov
9
6.16%
2
12.50%
Florian Westphal
8
5.48%
2
12.50%
Alexey Dobriyan
7
4.79%
2
12.50%
Masahide Nakamura
4
2.74%
2
12.50%
Hideaki Yoshifuji / 吉藤英明
4
2.74%
1
6.25%
James Morris
3
2.05%
1
6.25%
Total
146
100.00%
16
100.00%


static inline struct xfrm_state *

__xfrm_state_locate(struct xfrm_state *x, int use_spi, int family)
{
	struct net *net = xs_net(x);
	u32 mark = x->mark.v & x->mark.m;

	if (use_spi)
		return __xfrm_state_lookup(net, mark, &x->id.daddr,
					   x->id.spi, x->id.proto, family);
	else
		return __xfrm_state_lookup_byaddr(net, mark,
						  &x->id.daddr,
						  &x->props.saddr,
						  x->id.proto, family);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
50
45.87%
1
25.00%
Hideaki Yoshifuji / 吉藤英明
26
23.85%
1
25.00%
Jamal Hadi Salim
19
17.43%
1
25.00%
Alexey Dobriyan
14
12.84%
1
25.00%
Total
109
100.00%
4
100.00%



static void xfrm_hash_grow_check(struct net *net, int have_hash_collision)
{
	if (have_hash_collision &&
	    (net->xfrm.state_hmask + 1) < xfrm_state_hashmax &&
	    net->xfrm.state_num > net->xfrm.state_hmask)
		schedule_work(&net->xfrm.state_hash_work);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Patrick McHardy
27
51.92%
1
20.00%
Alexey Dobriyan
25
48.08%
4
80.00%
Total
52
100.00%
5
100.00%



static void xfrm_state_look_at(struct xfrm_policy *pol, struct xfrm_state *x,
			       const struct flowi *fl, unsigned short family,
			       struct xfrm_state **best, int *acq_in_progress,
			       int *error)
{
	/* Resolution logic:
         * 1. There is a valid state with matching selector. Done.
         * 2. Valid state with inappropriate selector. Skip.
         *
         * Entering area of "sysdeps".
         *
         * 3. If state is not valid, selector is temporary, it selects
         *    only session which triggered previous resolution. Key
         *    manager will do something to install a state with proper
         *    selector.
         */
	if (x->km.state == XFRM_STATE_VALID) {
		if ((x->sel.family &&
		     !xfrm_selector_match(&x->sel, fl, x->sel.family)) ||
		    !security_xfrm_state_pol_flow_match(x, pol, fl))
			return;

		if (!*best ||
		    (*best)->km.dying > x->km.dying ||
		    ((*best)->km.dying == x->km.dying &&
		     (*best)->curlft.add_time < x->curlft.add_time))
			*best = x;
	} else if (x->km.state == XFRM_STATE_ACQ) {
		*acq_in_progress = 1;
	} else if (x->km.state == XFRM_STATE_ERROR ||
		   x->km.state == XFRM_STATE_EXPIRED) {
		if (xfrm_selector_match(&x->sel, fl, x->sel.family) &&
		    security_xfrm_state_pol_flow_match(x, pol, fl))
			*error = -ESRCH;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
221
100.00%
2
100.00%
Total
221
100.00%
2
100.00%


struct xfrm_state *

xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr,
		const struct flowi *fl, struct xfrm_tmpl *tmpl,
		struct xfrm_policy *pol, int *err,
		unsigned short family)
{
	static xfrm_address_t saddr_wildcard = { };
	struct net *net = xp_net(pol);
	unsigned int h, h_wildcard;
	struct xfrm_state *x, *x0, *to_put;
	int acquire_in_progress = 0;
	int error = 0;
	struct xfrm_state *best = NULL;
	u32 mark = pol->mark.v & pol->mark.m;
	unsigned short encap_family = tmpl->encap_family;
	unsigned int sequence;
	struct km_event c;

	to_put = NULL;

	sequence = read_seqcount_begin(&xfrm_state_hash_generation);

	rcu_read_lock();
	h = xfrm_dst_hash(net, daddr, saddr, tmpl->reqid, encap_family);
	hlist_for_each_entry_rcu(x, net->xfrm.state_bydst + h, bydst) {
		if (x->props.family == encap_family &&
		    x->props.reqid == tmpl->reqid &&
		    (mark & x->mark.m) == x->mark.v &&
		    !(x->props.flags & XFRM_STATE_WILDRECV) &&
		    xfrm_state_addr_check(x, daddr, saddr, encap_family) &&
		    tmpl->mode == x->props.mode &&
		    tmpl->id.proto == x->id.proto &&
		    (tmpl->id.spi == x->id.spi || !tmpl->id.spi))
			xfrm_state_look_at(pol, x, fl, encap_family,
					   &best, &acquire_in_progress, &error);
	}
	if (best || acquire_in_progress)
		goto found;

	h_wildcard = xfrm_dst_hash(net, daddr, &saddr_wildcard, tmpl->reqid, encap_family);
	hlist_for_each_entry_rcu(x, net->xfrm.state_bydst + h_wildcard, bydst) {
		if (x->props.family == encap_family &&
		    x->props.reqid == tmpl->reqid &&
		    (mark & x->mark.m) == x->mark.v &&
		    !(x->props.flags & XFRM_STATE_WILDRECV) &&
		    xfrm_addr_equal(&x->id.daddr, daddr, encap_family) &&
		    tmpl->mode == x->props.mode &&
		    tmpl->id.proto == x->id.proto &&
		    (tmpl->id.spi == x->id.spi || !tmpl->id.spi))
			xfrm_state_look_at(pol, x, fl, encap_family,
					   &best, &acquire_in_progress, &error);
	}

found:
	x = best;
	if (!x && !error && !acquire_in_progress) {
		if (tmpl->id.spi &&
		    (x0 = __xfrm_state_lookup(net, mark, daddr, tmpl->id.spi,
					      tmpl->id.proto, encap_family)) != NULL) {
			to_put = x0;
			error = -EEXIST;
			goto out;
		}

		c.net = net;
		/* If the KMs have no listeners (yet...), avoid allocating an SA
                 * for each and every packet - garbage collection might not
                 * handle the flood.
                 */
		if (!km_is_alive(&c)) {
			error = -ESRCH;
			goto out;
		}

		x = xfrm_state_alloc(net);
		if (x == NULL) {
			error = -ENOMEM;
			goto out;
		}
		/* Initialize temporary state matching only
                 * to current session. */
		xfrm_init_tempstate(x, fl, tmpl, daddr, saddr, family);
		memcpy(&x->mark, &pol->mark, sizeof(x->mark));

		error = security_xfrm_state_alloc_acquire(x, pol->security, fl->flowi_secid);
		if (error) {
			x->km.state = XFRM_STATE_DEAD;
			to_put = x;
			x = NULL;
			goto out;
		}

		if (km_query(x, tmpl, pol) == 0) {
			spin_lock_bh(&net->xfrm.xfrm_state_lock);
			x->km.state = XFRM_STATE_ACQ;
			list_add(&x->km.all, &net->xfrm.state_all);
			hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h);
			h = xfrm_src_hash(net, daddr, saddr, encap_family);
			hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h);
			if (x->id.spi) {
				h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, encap_family);
				hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h);
			}
			x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires;
			tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL);
			net->xfrm.state_num++;
			xfrm_hash_grow_check(net, x->bydst.next != NULL);
			spin_unlock_bh(&net->xfrm.xfrm_state_lock);
		} else {
			x->km.state = XFRM_STATE_DEAD;
			to_put = x;
			x = NULL;
			error = -ESRCH;
		}
	}
out:
	if (x) {
		if (!xfrm_state_hold_rcu(x)) {
			*err = -EAGAIN;
			x = NULL;
		}
	} else {
		*err = acquire_in_progress ? -EAGAIN : error;
	}
	rcu_read_unlock();
	if (to_put)
		xfrm_state_put(to_put);

	if (read_seqcount_retry(&xfrm_state_hash_generation, sequence)) {
		*err = -EAGAIN;
		if (x) {
			xfrm_state_put(x);
			x = NULL;
		}
	}

	return x;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Kuznetsov
242
25.05%
5
9.80%
David S. Miller
157
16.25%
7
13.73%
Patrick McHardy
100
10.35%
4
7.84%
Florian Westphal
96
9.94%
4
7.84%
Jamal Hadi Salim
69
7.14%
2
3.92%
Hideaki Yoshifuji / 吉藤英明
62
6.42%
1
1.96%
Alexey Dobriyan
59
6.11%
11
21.57%
Venkat Yekkirala
39
4.04%
1
1.96%
Horia Geantă
30
3.11%
1
1.96%
Masahide Nakamura
23
2.38%
3
5.88%
Herbert Xu
22
2.28%
3
5.88%
Thomas Egerer
21
2.17%
1
1.96%
Pavel Emelyanov
14
1.45%
1
1.96%
Yury Polyanskiy
12
1.24%
1
1.96%
Fan Du
8
0.83%
2
3.92%
Kunihiro Ishiguro
6
0.62%
1
1.96%
Nicolas Dichtel
3
0.31%
1
1.96%
Trent Jaeger
2
0.21%
1
1.96%
Joakim Koskela
1
0.10%
1
1.96%
Total
966
100.00%
51
100.00%


struct xfrm_state *

xfrm_stateonly_find(struct net *net, u32 mark,
		    xfrm_address_t *daddr, xfrm_address_t *saddr,
		    unsigned short family, u8 mode, u8 proto, u32 reqid)
{
	unsigned int h;
	struct xfrm_state *rx = NULL, *x = NULL;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	h = xfrm_dst_hash(net, daddr, saddr, reqid, family);
	hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) {
		if (x->props.family == family &&
		    x->props.reqid == reqid &&
		    (mark & x->mark.m) == x->mark.v &&
		    !(x->props.flags & XFRM_STATE_WILDRECV) &&
		    xfrm_state_addr_check(x, daddr, saddr, family) &&
		    mode == x->props.mode &&
		    proto == x->id.proto &&
		    x->km.state == XFRM_STATE_VALID) {
			rx = x;
			break;
		}
	}

	if (rx)
		xfrm_state_hold(rx);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);


	return rx;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
165
84.18%
3
37.50%
Pavel Emelyanov
13
6.63%
1
12.50%
Fan Du
10
5.10%
2
25.00%
Alexey Dobriyan
8
4.08%
2
25.00%
Total
196
100.00%
8
100.00%


EXPORT_SYMBOL(xfrm_stateonly_find);



struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi,
					      unsigned short family)
{
	struct xfrm_state *x;
	struct xfrm_state_walk *w;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	list_for_each_entry(w, &net->xfrm.state_all, all) {
		x = container_of(w, struct xfrm_state, km);
		if (x->props.family != family ||
			x->id.spi != spi)
			continue;

		xfrm_state_hold(x);
		spin_unlock_bh(&net->xfrm.xfrm_state_lock);
		return x;
	}
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	return NULL;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Fan Du
106
95.50%
1
50.00%
Li RongQing
5
4.50%
1
50.00%
Total
111
100.00%
2
100.00%


EXPORT_SYMBOL(xfrm_state_lookup_byspi);



static void __xfrm_state_insert(struct xfrm_state *x)
{
	struct net *net = xs_net(x);
	unsigned int h;

	list_add(&x->km.all, &net->xfrm.state_all);

	h = xfrm_dst_hash(net, &x->id.daddr, &x->props.saddr,
			  x->props.reqid, x->props.family);
	hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h);

	h = xfrm_src_hash(net, &x->id.daddr, &x->props.saddr, x->props.family);
	hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h);

	if (x->id.spi) {
		h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto,
				  x->props.family);

		hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h);
	}

	tasklet_hrtimer_start(&x->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL);
	if (x->replay_maxage)
		mod_timer(&x->rtimer, jiffies + x->replay_maxage);

	net->xfrm.state_num++;

	xfrm_hash_grow_check(net, x->bydst.next != NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
130
52.21%
7
26.92%
Alexey Dobriyan
46
18.47%
7
26.92%
Hideaki Yoshifuji / 吉藤英明
20
8.03%
1
3.85%
Masahide Nakamura
12
4.82%
3
11.54%
Yury Polyanskiy
10
4.02%
1
3.85%
Timo Teräs
9
3.61%
1
3.85%
Alexey Kuznetsov
7
2.81%
1
3.85%
Kazunori Miyazawa
5
2.01%
1
3.85%
Herbert Xu
5
2.01%
2
7.69%
Florian Westphal
3
1.20%
1
3.85%
Kunihiro Ishiguro
2
0.80%
1
3.85%
Total
249
100.00%
26
100.00%

/* net->xfrm.xfrm_state_lock is held */


static void __xfrm_state_bump_genids(struct xfrm_state *xnew)
{
	struct net *net = xs_net(xnew);
	unsigned short family = xnew->props.family;
	u32 reqid = xnew->props.reqid;
	struct xfrm_state *x;
	unsigned int h;
	u32 mark = xnew->mark.v & xnew->mark.m;

	h = xfrm_dst_hash(net, &xnew->id.daddr, &xnew->props.saddr, reqid, family);
	hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) {
		if (x->props.family	== family &&
		    x->props.reqid	== reqid &&
		    (mark & x->mark.m) == x->mark.v &&
		    xfrm_addr_equal(&x->id.daddr, &xnew->id.daddr, family) &&
		    xfrm_addr_equal(&x->props.saddr, &xnew->props.saddr, family))
			x->genid++;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
128
72.73%
2
28.57%
Jamal Hadi Salim
31
17.61%
1
14.29%
Alexey Dobriyan
14
7.95%
2
28.57%
Hideaki Yoshifuji / 吉藤英明
2
1.14%
1
14.29%
Herbert Xu
1
0.57%
1
14.29%
Total
176
100.00%
7
100.00%



void xfrm_state_insert(struct xfrm_state *x)
{
	struct net *net = xs_net(x);

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	__xfrm_state_bump_genids(x);
	__xfrm_state_insert(x);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
32
64.00%
2
66.67%
Fan Du
18
36.00%
1
33.33%
Total
50
100.00%
3
100.00%


EXPORT_SYMBOL(xfrm_state_insert);

/* net->xfrm.xfrm_state_lock is held */


static struct xfrm_state *__find_acq_core(struct net *net,
					  const struct xfrm_mark *m,
					  unsigned short family, u8 mode,
					  u32 reqid, u8 proto,
					  const xfrm_address_t *daddr,
					  const xfrm_address_t *saddr,
					  int create)
{
	unsigned int h = xfrm_dst_hash(net, daddr, saddr, reqid, family);
	struct xfrm_state *x;
	u32 mark = m->v & m->m;

	hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) {
		if (x->props.reqid  != reqid ||
		    x->props.mode   != mode ||
		    x->props.family != family ||
		    x->km.state     != XFRM_STATE_ACQ ||
		    x->id.spi       != 0 ||
		    x->id.proto	    != proto ||
		    (mark & x->mark.m) != x->mark.v ||
		    !xfrm_addr_equal(&x->id.daddr, daddr, family) ||
		    !xfrm_addr_equal(&x->props.saddr, saddr, family))
			continue;

		xfrm_state_hold(x);
		return x;
	}

	if (!create)
		return NULL;

	x = xfrm_state_alloc(net);
	if (likely(x)) {
		switch (family) {
		case AF_INET:
			x->sel.daddr.a4 = daddr->a4;
			x->sel.saddr.a4 = saddr->a4;
			x->sel.prefixlen_d = 32;
			x->sel.prefixlen_s = 32;
			x->props.saddr.a4 = saddr->a4;
			x->id.daddr.a4 = daddr->a4;
			break;

		case AF_INET6:
			x->sel.daddr.in6 = daddr->in6;
			x->sel.saddr.in6 = saddr->in6;
			x->sel.prefixlen_d = 128;
			x->sel.prefixlen_s = 128;
			x->props.saddr.in6 = saddr->in6;
			x->id.daddr.in6 = daddr->in6;
			break;
		}

		x->km.state = XFRM_STATE_ACQ;
		x->id.proto = proto;
		x->props.family = family;
		x->props.mode = mode;
		x->props.reqid = reqid;
		x->mark.v = m->v;
		x->mark.m = m->m;
		x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires;
		xfrm_state_hold(x);
		tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL);
		list_add(&x->km.all, &net->xfrm.state_all);
		hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h);
		h = xfrm_src_hash(net, daddr, saddr, family);
		hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h);

		net->xfrm.state_num++;

		xfrm_hash_grow_check(net, x->bydst.next != NULL);
	}

	return x;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
326
60.15%
7
18.42%
Jamal Hadi Salim
60
11.07%
3
7.89%
Alexey Dobriyan
49
9.04%
10
26.32%
Herbert Xu
20
3.69%
3
7.89%
Masahide Nakamura
14
2.58%
2
5.26%
Alexey Kuznetsov
14
2.58%
2
5.26%
Yury Polyanskiy
12
2.21%
1
2.63%
Jiri Benc
12
2.21%
1
2.63%
Hideaki Yoshifuji / 吉藤英明
11
2.03%
2
5.26%
Joy Latten
8
1.48%
1
2.63%
Wei Yongjun
6
1.11%
1
2.63%
Kunihiro Ishiguro
5
0.92%
1
2.63%
Florian Westphal
2
0.37%
1
2.63%
Mathias Krause
1
0.18%
1
2.63%
Kazunori Miyazawa
1
0.18%
1
2.63%
James Morris
1
0.18%
1
2.63%
Total
542
100.00%
38
100.00%

static struct xfrm_state *__xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq);



int xfrm_state_add(struct xfrm_state *x)
{
	struct net *net = xs_net(x);
	struct xfrm_state *x1, *to_put;
	int family;
	int err;
	u32 mark = x->mark.v & x->mark.m;
	int use_spi = xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY);

	family = x->props.family;

	to_put = NULL;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);

	x1 = __xfrm_state_locate(x, use_spi, family);
	if (x1) {
		to_put = x1;
		x1 = NULL;
		err = -EEXIST;
		goto out;
	}

	if (use_spi && x->km.seq) {
		x1 = __xfrm_find_acq_byseq(net, mark, x->km.seq);
		if (x1 && ((x1->id.proto != x->id.proto) ||
		    !xfrm_addr_equal(&x1->id.daddr, &x->id.daddr, family))) {
			to_put = x1;
			x1 = NULL;
		}
	}

	if (use_spi && !x1)
		x1 = __find_acq_core(net, &x->mark, family, x->props.mode,
				     x->props.reqid, x->id.proto,
				     &x->id.daddr, &x->props.saddr, 0);

	__xfrm_state_bump_genids(x);
	__xfrm_state_insert(x);
	err = 0;

out:
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);

	if (x1) {
		xfrm_state_delete(x1);
		xfrm_state_put(x1);
	}

	if (to_put)
		xfrm_state_put(to_put);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
188
61.84%
4
26.67%
David S. Miller
30
9.87%
4
26.67%
Jamal Hadi Salim
22
7.24%
1
6.67%
Masahide Nakamura
20
6.58%
1
6.67%
Joy Latten
16
5.26%
1
6.67%
Alexey Dobriyan
14
4.61%
1
6.67%
Fan Du
8
2.63%
1
6.67%
Hideaki Yoshifuji / 吉藤英明
6
1.97%
2
13.33%
Total
304
100.00%
15
100.00%


EXPORT_SYMBOL(xfrm_state_add);

#ifdef CONFIG_XFRM_MIGRATE


static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig)
{
	struct net *net = xs_net(orig);
	struct xfrm_state *x = xfrm_state_alloc(net);
	if (!x)
		goto out;

	memcpy(&x->id, &orig->id, sizeof(x->id));
	memcpy(&x->sel, &orig->sel, sizeof(x->sel));
	memcpy(&x->lft, &orig->lft, sizeof(x->lft));
	x->props.mode = orig->props.mode;
	x->props.replay_window = orig->props.replay_window;
	x->props.reqid = orig->props.reqid;
	x->props.family = orig->props.family;
	x->props.saddr = orig->props.saddr;

	if (orig->aalg) {
		x->aalg = xfrm_algo_auth_clone(orig->aalg);
		if (!x->aalg)
			goto error;
	}
	x->props.aalgo = orig->props.aalgo;

	if (orig->aead) {
		x->aead = xfrm_algo_aead_clone(orig->aead);
		if (!x->aead)
			goto error;
	}
	if (orig->ealg) {
		x->ealg = xfrm_algo_clone(orig->ealg);
		if (!x->ealg)
			goto error;
	}
	x->props.ealgo = orig->props.ealgo;

	if (orig->calg) {
		x->calg = xfrm_algo_clone(orig->calg);
		if (!x->calg)
			goto error;
	}
	x->props.calgo = orig->props.calgo;

	if (orig->encap) {
		x->encap = kmemdup(orig->encap, sizeof(*x->encap), GFP_KERNEL);
		if (!x->encap)
			goto error;
	}

	if (orig->coaddr) {
		x->coaddr = kmemdup(orig->coaddr, sizeof(*x->coaddr),
				    GFP_KERNEL);
		if (!x->coaddr)
			goto error;
	}

	if (orig->replay_esn) {
		if (xfrm_replay_clone(x, orig))
			goto error;
	}

	memcpy(&x->mark, &orig->mark, sizeof(x->mark));

	if (xfrm_init_state(x) < 0)
		goto error;

	x->props.flags = orig->props.flags;
	x->props.extra_flags = orig->props.extra_flags;

	x->tfcpad = orig->tfcpad;
	x->replay_maxdiff = orig->replay_maxdiff;
	x->replay_maxage = orig->replay_maxage;
	x->curlft.add_time = orig->curlft.add_time;
	x->km.state = orig->km.state;
	x->km.seq = orig->km.seq;

	return x;

 error:
	xfrm_state_put(x);
out:
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Shinta Sugimoto
410
75.65%
1
9.09%
Steffen Klassert
77
14.21%
3
27.27%
Jamal Hadi Salim
20
3.69%
1
9.09%
Alexey Dobriyan
13
2.40%
2
18.18%
Nicolas Dichtel
12
2.21%
1
9.09%
Herbert Xu
8
1.48%
1
9.09%
Martin Willi
1
0.18%
1
9.09%
Eric Dumazet
1
0.18%
1
9.09%
Total
542
100.00%
11
100.00%



struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net)
{
	unsigned int h;
	struct xfrm_state *x = NULL;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);

	if (m->reqid) {
		h = xfrm_dst_hash(net, &m->old_daddr, &m->old_saddr,
				  m->reqid, m->old_family);
		hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) {
			if (x->props.mode != m->mode ||
			    x->id.proto != m->proto)
				continue;
			if (m->reqid && x->props.reqid != m->reqid)
				continue;
			if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
					     m->old_family) ||
			    !xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
					     m->old_family))
				continue;
			xfrm_state_hold(x);
			break;
		}
	} else {
		h = xfrm_src_hash(net, &m->old_daddr, &m->old_saddr,
				  m->old_family);
		hlist_for_each_entry(x, net->xfrm.state_bysrc+h, bysrc) {
			if (x->props.mode != m->mode ||
			    x->id.proto != m->proto)
				continue;
			if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr,
					     m->old_family) ||
			    !xfrm_addr_equal(&x->props.saddr, &m->old_saddr,
					     m->old_family))
				continue;
			xfrm_state_hold(x);
			break;
		}
	}

	spin_unlock_bh(&net->xfrm.xfrm_state_lock);

	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Shinta Sugimoto
243
84.08%
1
20.00%
Steffen Klassert
25
8.65%
1
20.00%
Fan Du
9
3.11%
1
20.00%
Hideaki Yoshifuji / 吉藤英明
8
2.77%
1
20.00%
Alexey Dobriyan
4
1.38%
1
20.00%
Total
289
100.00%
5
100.00%


EXPORT_SYMBOL(xfrm_migrate_state_find);



struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x,
				      struct xfrm_migrate *m)
{
	struct xfrm_state *xc;

	xc = xfrm_state_clone(x);
	if (!xc)
		return NULL;

	memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr));
	memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr));

	/* add state */
	if (xfrm_addr_equal(&x->id.daddr, &m->new_daddr, m->new_family)) {
		/* a care is needed when the destination address of the
                   state is to be updated as it is a part of triplet */
		xfrm_state_insert(xc);
	} else {
		if (xfrm_state_add(xc) < 0)
			goto error;
	}

	return xc;
error:
	xfrm_state_put(xc);
	return NULL;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Shinta Sugimoto
141
98.60%
1
33.33%
Hideaki Yoshifuji / 吉藤英明
1
0.70%
1
33.33%
Thomas Egerer
1
0.70%
1
33.33%
Total
143
100.00%
3
100.00%


EXPORT_SYMBOL(xfrm_state_migrate);
#endif



int xfrm_state_update(struct xfrm_state *x)
{
	struct xfrm_state *x1, *to_put;
	int err;
	int use_spi = xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY);
	struct net *net = xs_net(x);

	to_put = NULL;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	x1 = __xfrm_state_locate(x, use_spi, x->props.family);

	err = -ESRCH;
	if (!x1)
		goto out;

	if (xfrm_state_kern(x1)) {
		to_put = x1;
		err = -EEXIST;
		goto out;
	}

	if (x1->km.state == XFRM_STATE_ACQ) {
		__xfrm_state_insert(x);
		x = NULL;
	}
	err = 0;

out:
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);

	if (to_put)
		xfrm_state_put(to_put);

	if (err)
		return err;

	if (!x) {
		xfrm_state_delete(x1);
		xfrm_state_put(x1);
		return 0;
	}

	err = -EINVAL;
	spin_lock_bh(&x1->lock);
	if (likely(x1->km.state == XFRM_STATE_VALID)) {
		if (x->encap && x1->encap)
			memcpy(x1->encap, x->encap, sizeof(*x1->encap));
		if (x->coaddr && x1->coaddr) {
			memcpy(x1->coaddr, x->coaddr, sizeof(*x1->coaddr));
		}
		if (!use_spi && memcmp(&x1->sel, &x->sel, sizeof(x1->sel)))
			memcpy(&x1->sel, &x->sel, sizeof(x1->sel));
		memcpy(&x1->lft, &x->lft, sizeof(x1->lft));
		x1->km.dying = 0;

		tasklet_hrtimer_start(&x1->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL);
		if (x1->curlft.use_time)
			xfrm_state_check_expire(x1);

		err = 0;
		x->km.state = XFRM_STATE_DEAD;
		__xfrm_state_put(x);
	}
	spin_unlock_bh(&x1->lock);

	xfrm_state_put(x1);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
247
60.99%
4
33.33%
Noriaki Takamiya
76
18.77%
1
8.33%
David S. Miller
24
5.93%
2
16.67%
Fan Du
18
4.44%
1
8.33%
Masahide Nakamura
16
3.95%
1
8.33%
Tushar Gohad
13
3.21%
1
8.33%
Yury Polyanskiy
10
2.47%
1
8.33%
Hideaki Yoshifuji / 吉藤英明
1
0.25%
1
8.33%
Total
405
100.00%
12
100.00%


EXPORT_SYMBOL(xfrm_state_update);



int xfrm_state_check_expire(struct xfrm_state *x)
{
	if (!x->curlft.use_time)
		x->curlft.use_time = get_seconds();

	if (x->curlft.bytes >= x->lft.hard_byte_limit ||
	    x->curlft.packets >= x->lft.hard_packet_limit) {
		x->km.state = XFRM_STATE_EXPIRED;
		tasklet_hrtimer_start(&x->mtimer, 0, HRTIMER_MODE_REL);
		return -EINVAL;
	}

	if (!x->km.dying &&
	    (x->curlft.bytes >= x->lft.soft_byte_limit ||
	     x->curlft.packets >= x->lft.soft_packet_limit)) {
		x->km.dying = 1;
		km_state_expired(x, 0, 0);
	}
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
56
40.88%
1
9.09%
Alexey Kuznetsov
41
29.93%
2
18.18%
Herbert Xu
19
13.87%
2
18.18%
Kazunori Miyazawa
9
6.57%
1
9.09%
Yury Polyanskiy
5
3.65%
1
9.09%
Kunihiro Ishiguro
2
1.46%
1
9.09%
Jamal Hadi Salim
2
1.46%
1
9.09%
James Morris
2
1.46%
1
9.09%
David S. Miller
1
0.73%
1
9.09%
Total
137
100.00%
11
100.00%


EXPORT_SYMBOL(xfrm_state_check_expire);


struct xfrm_state *

xfrm_state_lookup(struct net *net, u32 mark, const xfrm_address_t *daddr, __be32 spi,
		  u8 proto, unsigned short family)
{
	struct xfrm_state *x;

	rcu_read_lock();
	x = __xfrm_state_lookup(net, mark, daddr, spi, proto, family);
	rcu_read_unlock();
	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
35
57.38%
1
11.11%
Alexey Dobriyan
7
11.48%
1
11.11%
Jamal Hadi Salim
5
8.20%
1
11.11%
David S. Miller
4
6.56%
2
22.22%
Florian Westphal
4
6.56%
1
11.11%
Kazunori Miyazawa
3
4.92%
1
11.11%
Alexey Kuznetsov
2
3.28%
1
11.11%
Al Viro
1
1.64%
1
11.11%
Total
61
100.00%
9
100.00%


EXPORT_SYMBOL(xfrm_state_lookup);


struct xfrm_state *

xfrm_state_lookup_byaddr(struct net *net, u32 mark,
			 const xfrm_address_t *daddr, const xfrm_address_t *saddr,
			 u8 proto, unsigned short family)
{
	struct xfrm_state *x;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	x = __xfrm_state_lookup_byaddr(net, mark, daddr, saddr, proto, family);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masahide Nakamura
49
63.64%
1
14.29%
Fan Du
8
10.39%
1
14.29%
Alexey Dobriyan
7
9.09%
1
14.29%
Jamal Hadi Salim
5
6.49%
1
14.29%
David S. Miller
5
6.49%
2
28.57%
Hideaki Yoshifuji / 吉藤英明
3
3.90%
1
14.29%
Total
77
100.00%
7
100.00%


EXPORT_SYMBOL(xfrm_state_lookup_byaddr);


struct xfrm_state *

xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, u8 mode, u32 reqid,
	      u8 proto, const xfrm_address_t *daddr,
	      const xfrm_address_t *saddr, int create, unsigned short family)
{
	struct xfrm_state *x;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	x = __find_acq_core(net, mark, family, mode, reqid, proto, daddr, saddr, create);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);

	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
49
51.58%
1
8.33%
Kazunori Miyazawa
12
12.63%
1
8.33%
Fan Du
8
8.42%
1
8.33%
Alexey Dobriyan
7
7.37%
1
8.33%
Jamal Hadi Salim
7
7.37%
1
8.33%
David S. Miller
5
5.26%
2
16.67%
Masahide Nakamura
3
3.16%
1
8.33%
Alexey Kuznetsov
2
2.11%
2
16.67%
Herbert Xu
1
1.05%
1
8.33%
Mathias Krause
1
1.05%
1
8.33%
Total
95
100.00%
12
100.00%


EXPORT_SYMBOL(xfrm_find_acq);

#ifdef CONFIG_XFRM_SUB_POLICY

int

xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n,
	       unsigned short family, struct net *net)
{
	int err = 0;
	struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
	if (!afinfo)
		return -EAFNOSUPPORT;

	spin_lock_bh(&net->xfrm.xfrm_state_lock); /*FIXME*/
	if (afinfo->tmpl_sort)
		err = afinfo->tmpl_sort(dst, src, n);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masahide Nakamura
83
83.84%
1
33.33%
Fan Du
14
14.14%
1
33.33%
Florian Westphal
2
2.02%
1
33.33%
Total
99
100.00%
3
100.00%


EXPORT_SYMBOL(xfrm_tmpl_sort);


int

xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n,
		unsigned short family)
{
	int err = 0;
	struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
	struct net *net = xs_net(*src);

	if (!afinfo)
		return -EAFNOSUPPORT;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	if (afinfo->state_sort)
		err = afinfo->state_sort(dst, src, n);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masahide Nakamura
83
79.81%
1
25.00%
Fan Du
18
17.31%
1
25.00%
Florian Westphal
2
1.92%
1
25.00%
Steffen Klassert
1
0.96%
1
25.00%
Total
104
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_state_sort);
#endif

/* Silly enough, but I'm lazy to build resolution list */



static struct xfrm_state *__xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq)
{
	int i;

	for (i = 0; i <= net->xfrm.state_hmask; i++) {
		struct xfrm_state *x;

		hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) {
			if (x->km.seq == seq &&
			    (mark & x->mark.m) == x->mark.v &&
			    x->km.state == XFRM_STATE_ACQ) {
				xfrm_state_hold(x);
				return x;
			}
		}
	}
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
36
34.95%
1
6.67%
Jamal Hadi Salim
19
18.45%
2
13.33%
Alexey Dobriyan
11
10.68%
2
13.33%
David S. Miller
9
8.74%
3
20.00%
Patrick McHardy
8
7.77%
1
6.67%
Kazunori Miyazawa
7
6.80%
1
6.67%
Herbert Xu
6
5.83%
1
6.67%
Alexey Kuznetsov
5
4.85%
2
13.33%
James Morris
1
0.97%
1
6.67%
Kunihiro Ishiguro
1
0.97%
1
6.67%
Total
103
100.00%
15
100.00%



struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq)
{
	struct xfrm_state *x;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	x = __xfrm_find_acq_byseq(net, mark, seq);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	return x;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
28
49.12%
1
20.00%
Alexey Kuznetsov
9
15.79%
1
20.00%
Fan Du
8
14.04%
1
20.00%
Alexey Dobriyan
7
12.28%
1
20.00%
Jamal Hadi Salim
5
8.77%
1
20.00%
Total
57
100.00%
5
100.00%


EXPORT_SYMBOL(xfrm_find_acq_byseq);



u32 xfrm_get_acqseq(void)
{
	u32 res;
	static atomic_t acqseq;

	do {
		res = atomic_inc_return(&acqseq);
	} while (!res);

	return res;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
22
64.71%
1
50.00%
Jamal Hadi Salim
12
35.29%
1
50.00%
Total
34
100.00%
2
100.00%


EXPORT_SYMBOL(xfrm_get_acqseq);



int verify_spi_info(u8 proto, u32 min, u32 max)
{
	switch (proto) {
	case IPPROTO_AH:
	case IPPROTO_ESP:
		break;

	case IPPROTO_COMP:
		/* IPCOMP spi is 16-bits. */
		if (max >= 0x10000)
			return -EINVAL;
		break;

	default:
		return -EINVAL;
	}

	if (min > max)
		return -EINVAL;

	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Fan Du
60
100.00%
1
100.00%
Total
60
100.00%
1
100.00%


EXPORT_SYMBOL(verify_spi_info);



int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
{
	struct net *net = xs_net(x);
	unsigned int h;
	struct xfrm_state *x0;
	int err = -ENOENT;
	__be32 minspi = htonl(low);
	__be32 maxspi = htonl(high);
	u32 mark = x->mark.v & x->mark.m;

	spin_lock_bh(&x->lock);
	if (x->km.state == XFRM_STATE_DEAD)
		goto unlock;

	err = 0;
	if (x->id.spi)
		goto unlock;

	err = -ENOENT;

	if (minspi == maxspi) {
		x0 = xfrm_state_lookup(net, mark, &x->id.daddr, minspi, x->id.proto, x->props.family);
		if (x0) {
			xfrm_state_put(x0);
			goto unlock;
		}
		x->id.spi = minspi;
	} else {
		u32 spi = 0;
		for (h = 0; h < high-low+1; h++) {
			spi = low + prandom_u32()%(high-low+1);
			x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family);
			if (x0 == NULL) {
				x->id.spi = htonl(spi);
				break;
			}
			xfrm_state_put(x0);
		}
	}
	if (x->id.spi) {
		spin_lock_bh(&net->xfrm.xfrm_state_lock);
		h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, x->props.family);
		hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h);
		spin_unlock_bh(&net->xfrm.xfrm_state_lock);

		err = 0;
	}

unlock:
	spin_unlock_bh(&x->lock);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
129
35.05%
2
12.50%
Herbert Xu
89
24.18%
2
12.50%
Alexey Kuznetsov
55
14.95%
1
6.25%
Kazunori Miyazawa
37
10.05%
1
6.25%
Alexey Dobriyan
22
5.98%
4
25.00%
Jamal Hadi Salim
19
5.16%
1
6.25%
Fan Du
8
2.17%
1
6.25%
Al Viro
5
1.36%
1
6.25%
David S. Miller
2
0.54%
1
6.25%
Florian Westphal
1
0.27%
1
6.25%
Aruna-Hewapathirane
1
0.27%
1
6.25%
Total
368
100.00%
16
100.00%


EXPORT_SYMBOL(xfrm_alloc_spi);



static bool __xfrm_state_filter_match(struct xfrm_state *x,
				      struct xfrm_address_filter *filter)
{
	if (filter) {
		if ((filter->family == AF_INET ||
		     filter->family == AF_INET6) &&
		    x->props.family != filter->family)
			return false;

		return addr_match(&x->props.saddr, &filter->saddr,
				  filter->splen) &&
		       addr_match(&x->id.daddr, &filter->daddr,
				  filter->dplen);
	}
	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Nicolas Dichtel
93
100.00%
2
100.00%
Total
93
100.00%
2
100.00%



int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
		    int (*func)(struct xfrm_state *, int, void*),
		    void *data)
{
	struct xfrm_state *state;
	struct xfrm_state_walk *x;
	int err = 0;

	if (walk->seq != 0 && list_empty(&walk->all))
		return 0;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	if (list_empty(&walk->all))
		x = list_first_entry(&net->xfrm.state_all, struct xfrm_state_walk, all);
	else
		x = list_first_entry(&walk->all, struct xfrm_state_walk, all);
	list_for_each_entry_from(x, &net->xfrm.state_all, all) {
		if (x->state == XFRM_STATE_DEAD)
			continue;
		state = container_of(x, struct xfrm_state, km);
		if (!xfrm_id_proto_match(state->id.proto, walk->proto))
			continue;
		if (!__xfrm_state_filter_match(state, walk->filter))
			continue;
		err = func(state, walk->seq, data);
		if (err) {
			list_move_tail(&walk->all, &x->all);
			goto out;
		}
		walk->seq++;
	}
	if (walk->seq == 0) {
		err = -ENOENT;
		goto out;
	}
	list_del_init(&walk->all);
out:
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
70
26.52%
2
13.33%
Hideaki Yoshifuji / 吉藤英明
62
23.48%
1
6.67%
Timo Teräs
53
20.08%
1
6.67%
Jamal Hadi Salim
19
7.20%
1
6.67%
Alexey Kuznetsov
18
6.82%
2
13.33%
Nicolas Dichtel
13
4.92%
1
6.67%
Alexey Dobriyan
11
4.17%
2
13.33%
Fan Du
8
3.03%
1
6.67%
Masahide Nakamura
4
1.52%
1
6.67%
Kazunori Miyazawa
4
1.52%
1
6.67%
Li RongQing
1
0.38%
1
6.67%
David S. Miller
1
0.38%
1
6.67%
Total
264
100.00%
15
100.00%


EXPORT_SYMBOL(xfrm_state_walk);



void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto,
			  struct xfrm_address_filter *filter)
{
	INIT_LIST_HEAD(&walk->all);
	walk->proto = proto;
	walk->state = XFRM_STATE_DEAD;
	walk->seq = 0;
	walk->filter = filter;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
38
76.00%
2
40.00%
Nicolas Dichtel
11
22.00%
2
40.00%
Hideaki Yoshifuji / 吉藤英明
1
2.00%
1
20.00%
Total
50
100.00%
5
100.00%


EXPORT_SYMBOL(xfrm_state_walk_init);



void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net)
{
	kfree(walk->filter);

	if (list_empty(&walk->all))
		return;

	spin_lock_bh(&net->xfrm.xfrm_state_lock);
	list_del(&walk->all);
	spin_unlock_bh(&net->xfrm.xfrm_state_lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
40
65.57%
3
50.00%
Fan Du
13
21.31%
1
16.67%
Nicolas Dichtel
7
11.48%
1
16.67%
Chuck Ebbert
1
1.64%
1
16.67%
Total
61
100.00%
6
100.00%


EXPORT_SYMBOL(xfrm_state_walk_done);



static void xfrm_replay_timer_handler(unsigned long data)
{
	struct xfrm_state *x = (struct xfrm_state *)data;

	spin_lock(&x->lock);

	if (x->km.state == XFRM_STATE_VALID) {
		if (xfrm_aevent_is_on(xs_net(x)))
			x->repl->notify(x, XFRM_REPLAY_TIMEOUT);
		else
			x->xflags |= XFRM_TIME_DEFER;
	}

	spin_unlock(&x->lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
67
85.90%
2
50.00%
Alexey Dobriyan
6
7.69%
1
25.00%
Steffen Klassert
5
6.41%
1
25.00%
Total
78
100.00%
4
100.00%

static LIST_HEAD(xfrm_km_list);



void km_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c)
{
	struct xfrm_mgr *km;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list)
		if (km->notify_policy)
			km->notify_policy(xp, dir, c);
	rcu_read_unlock();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
31
56.36%
1
16.67%
Hideaki Yoshifuji / 吉藤英明
11
20.00%
1
16.67%
Américo Wang
5
9.09%
1
16.67%
Herbert Xu
4
7.27%
1
16.67%
Alexey Kuznetsov
3
5.45%
1
16.67%
David S. Miller
1
1.82%
1
16.67%
Total
55
100.00%
6
100.00%



void km_state_notify(struct xfrm_state *x, const struct km_event *c)
{
	struct xfrm_mgr *km;
	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list)
		if (km->notify)
			km->notify(x, c);
	rcu_read_unlock();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
25
50.00%
1
16.67%
Hideaki Yoshifuji / 吉藤英明
14
28.00%
1
16.67%
Américo Wang
5
10.00%
1
16.67%
Alexey Kuznetsov
3
6.00%
1
16.67%
Kazunori Miyazawa
2
4.00%
1
16.67%
David S. Miller
1
2.00%
1
16.67%
Total
50
100.00%
6
100.00%


EXPORT_SYMBOL(km_policy_notify);

EXPORT_SYMBOL(km_state_notify);



void km_state_expired(struct xfrm_state *x, int hard, u32 portid)
{
	struct km_event c;

	c.data.hard = hard;
	c.portid = portid;
	c.event = XFRM_MSG_EXPIRE;
	km_state_notify(x, &c);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jamal Hadi Salim
41
85.42%
2
33.33%
Eric W. Biedermann
3
6.25%
1
16.67%
Herbert Xu
3
6.25%
2
33.33%
Alexey Kuznetsov
1
2.08%
1
16.67%
Total
48
100.00%
6
100.00%


EXPORT_SYMBOL(km_state_expired);
/*
 * We send to all registered managers regardless of failure
 * We are happy with one success
*/


int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol)
{
	int err = -EINVAL, acqret;
	struct xfrm_mgr *km;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		acqret = km->acquire(x, t, pol);
		if (!acqret)
			err = acqret;
	}
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
43
58.11%
1
14.29%
Jamal Hadi Salim
8
10.81%
1
14.29%
Alexey Kuznetsov
7
9.46%
2
28.57%
Kazunori Miyazawa
6
8.11%
1
14.29%
Kunihiro Ishiguro
5
6.76%
1
14.29%
Américo Wang
5
6.76%
1
14.29%
Total
74
100.00%
7
100.00%


EXPORT_SYMBOL(km_query);



int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
{
	int err = -EINVAL;
	struct xfrm_mgr *km;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		if (km->new_mapping)
			err = km->new_mapping(x, ipaddr, sport);
		if (!err)
			break;
	}
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Derek Atkins
66
91.67%
1
33.33%
Américo Wang
5
6.94%
1
33.33%
Al Viro
1
1.39%
1
33.33%
Total
72
100.00%
3
100.00%


EXPORT_SYMBOL(km_new_mapping);



void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid)
{
	struct km_event c;

	c.data.hard = hard;
	c.portid = portid;
	c.event = XFRM_MSG_POLEXPIRE;
	km_policy_notify(pol, dir, &c);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
28
52.83%
3
50.00%
Jamal Hadi Salim
22
41.51%
2
33.33%
Eric W. Biedermann
3
5.66%
1
16.67%
Total
53
100.00%
6
100.00%


EXPORT_SYMBOL(km_policy_expired);

#ifdef CONFIG_XFRM_MIGRATE


int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
	       const struct xfrm_migrate *m, int num_migrate,
	       const struct xfrm_kmaddress *k)
{
	int err = -EINVAL;
	int ret;
	struct xfrm_mgr *km;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		if (km->migrate) {
			ret = km->migrate(sel, dir, type, m, num_migrate, k);
			if (!ret)
				err = ret;
		}
	}
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Shinta Sugimoto
86
85.15%
1
25.00%
Arnaud Ebalard
7
6.93%
1
25.00%
Américo Wang
5
4.95%
1
25.00%
David S. Miller
3
2.97%
1
25.00%
Total
101
100.00%
4
100.00%


EXPORT_SYMBOL(km_migrate);
#endif



int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr)
{
	int err = -EINVAL;
	int ret;
	struct xfrm_mgr *km;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		if (km->report) {
			ret = km->report(net, proto, sel, addr);
			if (!ret)
				err = ret;
		}
	}
	rcu_read_unlock();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masahide Nakamura
75
86.21%
1
33.33%
Alexey Dobriyan
7
8.05%
1
33.33%
Américo Wang
5
5.75%
1
33.33%
Total
87
100.00%
3
100.00%


EXPORT_SYMBOL(km_report);



bool km_is_alive(const struct km_event *c)
{
	struct xfrm_mgr *km;
	bool is_alive = false;

	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		if (km->is_alive && km->is_alive(c)) {
			is_alive = true;
			break;
		}
	}
	rcu_read_unlock();

	return is_alive;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Horia Geantă
60
100.00%
1
100.00%
Total
60
100.00%
1
100.00%


EXPORT_SYMBOL(km_is_alive);



int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
{
	int err;
	u8 *data;
	struct xfrm_mgr *km;
	struct xfrm_policy *pol = NULL;

	if (optlen <= 0 || optlen > PAGE_SIZE)
		return -EMSGSIZE;

	data = kmalloc(optlen, GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	err = -EFAULT;
	if (copy_from_user(data, optval, optlen))
		goto out;

	err = -EINVAL;
	rcu_read_lock();
	list_for_each_entry_rcu(km, &xfrm_km_list, list) {
		pol = km->compile_policy(sk, optname, data,
					 optlen, &err);
		if (err >= 0)
			break;
	}
	rcu_read_unlock();

	if (err >= 0) {
		xfrm_sk_policy_insert(sk, err, pol);
		xfrm_pol_put(pol);
		err = 0;
	}

out:
	kfree(data);
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
128
73.99%
1
16.67%
Kunihiro Ishiguro
17
9.83%
1
16.67%
Kazunori Miyazawa
17
9.83%
1
16.67%
Américo Wang
5
2.89%
1
16.67%
Herbert Xu
5
2.89%
1
16.67%
Al Viro
1
0.58%
1
16.67%
Total
173
100.00%
6
100.00%


EXPORT_SYMBOL(xfrm_user_policy);

static DEFINE_SPINLOCK(xfrm_km_lock);



int xfrm_register_km(struct xfrm_mgr *km)
{
	spin_lock_bh(&xfrm_km_lock);
	list_add_tail_rcu(&km->list, &xfrm_km_list);
	spin_unlock_bh(&xfrm_km_lock);
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
11
30.56%
1
25.00%
Kunihiro Ishiguro
11
30.56%
1
25.00%
Kazunori Miyazawa
11
30.56%
1
25.00%
Américo Wang
3
8.33%
1
25.00%
Total
36
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_register_km);



int xfrm_unregister_km(struct xfrm_mgr *km)
{
	spin_lock_bh(&xfrm_km_lock);
	list_del_rcu(&km->list);
	spin_unlock_bh(&xfrm_km_lock);
	synchronize_rcu();
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Kazunori Miyazawa
17
47.22%
1
25.00%
Hideaki Yoshifuji / 吉藤英明
9
25.00%
1
25.00%
Américo Wang
6
16.67%
1
25.00%
Kunihiro Ishiguro
4
11.11%
1
25.00%
Total
36
100.00%
4
100.00%


EXPORT_SYMBOL(xfrm_unregister_km);



int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo)
{
	int err = 0;

	if (WARN_ON(afinfo->family >= NPROTO))
		return -EAFNOSUPPORT;

	spin_lock_bh(&xfrm_state_afinfo_lock);
	if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL))
		err = -EEXIST;
	else
		rcu_assign_pointer(xfrm_state_afinfo[afinfo->family], afinfo);
	spin_unlock_bh(&xfrm_state_afinfo_lock);
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
43
55.84%
1
16.67%
Kunihiro Ishiguro
14
18.18%
1
16.67%
Kazunori Miyazawa
12
15.58%
1
16.67%
Américo Wang
6
7.79%
1
16.67%
Florian Westphal
1
1.30%
1
16.67%
Li RongQing
1
1.30%
1
16.67%
Total
77
100.00%
6
100.00%


EXPORT_SYMBOL(xfrm_state_register_afinfo);



int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo)
{
	int err = 0, family = afinfo->family;

	if (WARN_ON(family >= NPROTO))
		return -EAFNOSUPPORT;

	spin_lock_bh(&xfrm_state_afinfo_lock);
	if (likely(xfrm_state_afinfo[afinfo->family] != NULL)) {
		if (rcu_access_pointer(xfrm_state_afinfo[family]) != afinfo)
			err = -EINVAL;
		else
			RCU_INIT_POINTER(xfrm_state_afinfo[afinfo->family], NULL);
	}
	spin_unlock_bh(&xfrm_state_afinfo_lock);
	synchronize_rcu();
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
44
44.90%
1
20.00%
Kunihiro Ishiguro
20
20.41%
1
20.00%
Kazunori Miyazawa
16
16.33%
1
20.00%
Florian Westphal
9
9.18%
1
20.00%
Américo Wang
9
9.18%
1
20.00%
Total
98
100.00%
5
100.00%


EXPORT_SYMBOL(xfrm_state_unregister_afinfo);



struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family)
{
	if (unlikely(family >= NPROTO))
		return NULL;

	return rcu_dereference(xfrm_state_afinfo[family]);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Florian Westphal
32
100.00%
1
100.00%
Total
32
100.00%
1
100.00%



struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family)
{
	struct xfrm_state_afinfo *afinfo;
	if (unlikely(family >= NPROTO))
		return NULL;
	rcu_read_lock();
	afinfo = rcu_dereference(xfrm_state_afinfo[family]);
	if (unlikely(!afinfo))
		rcu_read_unlock();
	return afinfo;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
36
65.45%
1
16.67%
Kazunori Miyazawa
8
14.55%
1
16.67%
Américo Wang
7
12.73%
1
16.67%
Herbert Xu
3
5.45%
2
33.33%
Kunihiro Ishiguro
1
1.82%
1
16.67%
Total
55
100.00%
6
100.00%

/* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */


void xfrm_state_delete_tunnel(struct xfrm_state *x)
{
	if (x->tunnel) {
		struct xfrm_state *t = x->tunnel;

		if (atomic_read(&t->tunnel_users) == 2)
			xfrm_state_delete(t);
		atomic_dec(&t->tunnel_users);
		xfrm_state_put(t);
		x->tunnel = NULL;
	}
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
James Morris
63
100.00%
1
100.00%
Total
63
100.00%
1
100.00%


EXPORT_SYMBOL(xfrm_state_delete_tunnel);



int xfrm_state_mtu(struct xfrm_state *x, int mtu)
{
	const struct xfrm_type *type = READ_ONCE(x->type);

	if (x->km.state == XFRM_STATE_VALID &&
	    type && type->get_mtu)
		return type->get_mtu(x, mtu);

	return mtu - x->props.header_len;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
39
63.93%
1
25.00%
Florian Westphal
12
19.67%
1
25.00%
Patrick McHardy
10
16.39%
2
50.00%
Total
61
100.00%
4
100.00%



int __xfrm_init_state(struct xfrm_state *x, bool init_replay)
{
	struct xfrm_state_afinfo *afinfo;
	struct xfrm_mode *inner_mode;
	int family = x->props.family;
	int err;

	err = -EAFNOSUPPORT;
	afinfo = xfrm_state_get_afinfo(family);
	if (!afinfo)
		goto error;

	err = 0;
	if (afinfo->init_flags)
		err = afinfo->init_flags(x);

	rcu_read_unlock();

	if (err)
		goto error;

	err = -EPROTONOSUPPORT;

	if (x->sel.family != AF_UNSPEC) {
		inner_mode = xfrm_get_mode(x->props.mode, x->sel.family);
		if (inner_mode == NULL)
			goto error;

		if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) &&
		    family != x->sel.family) {
			xfrm_put_mode(inner_mode);
			goto error;
		}

		x->inner_mode = inner_mode;
	} else {
		struct xfrm_mode *inner_mode_iaf;
		int iafamily = AF_INET;

		inner_mode = xfrm_get_mode(x->props.mode, x->props.family);
		if (inner_mode == NULL)
			goto error;

		if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) {
			xfrm_put_mode(inner_mode);
			goto error;
		}
		x->inner_mode = inner_mode;

		if (x->props.family == AF_INET)
			iafamily = AF_INET6;

		inner_mode_iaf = xfrm_get_mode(x->props.mode, iafamily);
		if (inner_mode_iaf) {
			if (inner_mode_iaf->flags & XFRM_MODE_FLAG_TUNNEL)
				x->inner_mode_iaf = inner_mode_iaf;
			else
				xfrm_put_mode(inner_mode_iaf);
		}
	}

	x->type = xfrm_get_type(x->id.proto, family);
	if (x->type == NULL)
		goto error;

	err = x->type->init_state(x);
	if (err)
		goto error;

	x->outer_mode = xfrm_get_mode(x->props.mode, family);
	if (x->outer_mode == NULL) {
		err = -EPROTONOSUPPORT;
		goto error;
	}

	if (init_replay) {
		err = xfrm_init_replay(x);
		if (err)
			goto error;
	}

	x->km.state = XFRM_STATE_VALID;

error:
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
211
53.96%
4
44.44%
Kazunori Miyazawa
112
28.64%
1
11.11%
Martin Willi
35
8.95%
1
11.11%
Wei Yongjun
24
6.14%
1
11.11%
Julia Lawall
7
1.79%
1
11.11%
Florian Westphal
2
0.51%
1
11.11%
Total
391
100.00%
9
100.00%


EXPORT_SYMBOL(__xfrm_init_state);



int xfrm_init_state(struct xfrm_state *x)
{
	return __xfrm_init_state(x, true);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Wei Yongjun
18
100.00%
1
100.00%
Total
18
100.00%
1
100.00%


EXPORT_SYMBOL(xfrm_init_state);



int __net_init xfrm_state_init(struct net *net)
{
	unsigned int sz;

	INIT_LIST_HEAD(&net->xfrm.state_all);

	sz = sizeof(struct hlist_head) * 8;

	net->xfrm.state_bydst = xfrm_hash_alloc(sz);
	if (!net->xfrm.state_bydst)
		goto out_bydst;
	net->xfrm.state_bysrc = xfrm_hash_alloc(sz);
	if (!net->xfrm.state_bysrc)
		goto out_bysrc;
	net->xfrm.state_byspi = xfrm_hash_alloc(sz);
	if (!net->xfrm.state_byspi)
		goto out_byspi;
	net->xfrm.state_hmask = ((sz / sizeof(struct hlist_head)) - 1);

	net->xfrm.state_num = 0;
	INIT_WORK(&net->xfrm.state_hash_work, xfrm_hash_resize);
	spin_lock_init(&net->xfrm.xfrm_state_lock);
	return 0;

out_byspi:
	xfrm_hash_free(net->xfrm.state_bysrc, sz);
out_bysrc:
	xfrm_hash_free(net->xfrm.state_bydst, sz);
out_bydst:
	return -ENOMEM;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Dobriyan
132
69.84%
9
56.25%
David S. Miller
37
19.58%
2
12.50%
Kazunori Miyazawa
10
5.29%
1
6.25%
James Morris
3
1.59%
1
6.25%
Masahide Nakamura
3
1.59%
1
6.25%
Fan Du
2
1.06%
1
6.25%
Kunihiro Ishiguro
2
1.06%
1
6.25%
Total
189
100.00%
16
100.00%



void xfrm_state_fini(struct net *net)
{
	unsigned int sz;

	flush_work(&net->xfrm.state_hash_work);
	xfrm_state_flush(net, IPSEC_PROTO_ANY, false);
	flush_work(&xfrm_state_gc_work);

	WARN_ON(!list_empty(&net->xfrm.state_all));

	sz = (net->xfrm.state_hmask + 1) * sizeof(struct hlist_head);
	WARN_ON(!hlist_empty(net->xfrm.state_byspi));
	xfrm_hash_free(net->xfrm.state_byspi, sz);
	WARN_ON(!hlist_empty(net->xfrm.state_bysrc));
	xfrm_hash_free(net->xfrm.state_bysrc, sz);
	WARN_ON(!hlist_empty(net->xfrm.state_bydst));
	xfrm_hash_free(net->xfrm.state_bydst, sz);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Dobriyan
141
98.60%
7
77.78%
Tetsuo Handa
1
0.70%
1
11.11%
Florian Westphal
1
0.70%
1
11.11%
Total
143
100.00%
9
100.00%

#ifdef CONFIG_AUDITSYSCALL


static void xfrm_audit_helper_sainfo(struct xfrm_state *x,
				     struct audit_buffer *audit_buf)
{
	struct xfrm_sec_ctx *ctx = x->security;
	u32 spi = ntohl(x->id.spi);

	if (ctx)
		audit_log_format(audit_buf, " sec_alg=%u sec_doi=%u sec_obj=%s",
				 ctx->ctx_alg, ctx->ctx_doi, ctx->ctx_str);

	switch (x->props.family) {
	case AF_INET:
		audit_log_format(audit_buf, " src=%pI4 dst=%pI4",
				 &x->props.saddr.a4, &x->id.daddr.a4);
		break;
	case AF_INET6:
		audit_log_format(audit_buf, " src=%pI6 dst=%pI6",
				 x->props.saddr.a6, x->id.daddr.a6);
		break;
	}

	audit_log_format(audit_buf, " spi=%u(0x%x)", spi, spi);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
100
72.99%
1
20.00%
Paul Moore
33
24.09%
2
40.00%
Harvey Harrison
4
2.92%
2
40.00%
Total
137
100.00%
5
100.00%



static void xfrm_audit_helper_pktinfo(struct sk_buff *skb, u16 family,
				      struct audit_buffer *audit_buf)
{
	const struct iphdr *iph4;
	const struct ipv6hdr *iph6;

	switch (family) {
	case AF_INET:
		iph4 = ip_hdr(skb);
		audit_log_format(audit_buf, " src=%pI4 dst=%pI4",
				 &iph4->saddr, &iph4->daddr);
		break;
	case AF_INET6:
		iph6 = ipv6_hdr(skb);
		audit_log_format(audit_buf,
				 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
				 &iph6->saddr, &iph6->daddr,
				 iph6->flow_lbl[0] & 0x0f,
				 iph6->flow_lbl[1],
				 iph6->flow_lbl[2]);
		break;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Moore
108
93.10%
1
20.00%
Harvey Harrison
6
5.17%
3
60.00%
Eric Dumazet
2
1.72%
1
20.00%
Total
116
100.00%
5
100.00%



void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid)
{
	struct audit_buffer *audit_buf;

	audit_buf = xfrm_audit_start("SAD-add");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_usrinfo(task_valid, audit_buf);
	xfrm_audit_helper_sainfo(x, audit_buf);
	audit_log_format(audit_buf, " res=%u", result);
	audit_log_end(audit_buf);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
45
71.43%
1
20.00%
Paul Moore
14
22.22%
2
40.00%
Tetsuo Handa
3
4.76%
1
20.00%
Eric Paris
1
1.59%
1
20.00%
Total
63
100.00%
5
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_add);



void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid)
{
	struct audit_buffer *audit_buf;

	audit_buf = xfrm_audit_start("SAD-delete");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_usrinfo(task_valid, audit_buf);
	xfrm_audit_helper_sainfo(x, audit_buf);
	audit_log_format(audit_buf, " res=%u", result);
	audit_log_end(audit_buf);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Joy Latten
45
71.43%
1
20.00%
Paul Moore
14
22.22%
2
40.00%
Tetsuo Handa
3
4.76%
1
20.00%
Eric Paris
1
1.59%
1
20.00%
Total
63
100.00%
5
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_delete);



void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
				      struct sk_buff *skb)
{
	struct audit_buffer *audit_buf;
	u32 spi;

	audit_buf = xfrm_audit_start("SA-replay-overflow");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf);
	/* don't record the sequence number because it's inherent in this kind
         * of audit message */
	spi = ntohl(x->id.spi);
	audit_log_format(audit_buf, " spi=%u(0x%x)", spi, spi);
	audit_log_end(audit_buf);
}
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Paul Moore
78
100.00%
1
100.00%
Total
78
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow);



void xfrm_audit_state_replay(struct xfrm_state *x,
			     struct sk_buff *skb, __be32 net_seq)
{
	struct audit_buffer *audit_buf;
	u32 spi;

	audit_buf = xfrm_audit_start("SA-replayed-pkt");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf);
	spi = ntohl(x->id.spi);
	audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u",
			 spi, spi, ntohl(net_seq));
	audit_log_end(audit_buf);
}
Contributors
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CommitProp
Paul Moore
85
100.00%
1
100.00%
Total
85
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_replay);



void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family)
{
	struct audit_buffer *audit_buf;

	audit_buf = xfrm_audit_start("SA-notfound");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_pktinfo(skb, family, audit_buf);
	audit_log_end(audit_buf);
}
Contributors
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Paul Moore
46
100.00%
1
100.00%
Total
46
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple);



void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
			       __be32 net_spi, __be32 net_seq)
{
	struct audit_buffer *audit_buf;
	u32 spi;

	audit_buf = xfrm_audit_start("SA-notfound");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_pktinfo(skb, family, audit_buf);
	spi = ntohl(net_spi);
	audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u",
			 spi, spi, ntohl(net_seq));
	audit_log_end(audit_buf);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Moore
78
100.00%
1
100.00%
Total
78
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound);



void xfrm_audit_state_icvfail(struct xfrm_state *x,
			      struct sk_buff *skb, u8 proto)
{
	struct audit_buffer *audit_buf;
	__be32 net_spi;
	__be32 net_seq;

	audit_buf = xfrm_audit_start("SA-icv-failure");
	if (audit_buf == NULL)
		return;
	xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf);
	if (xfrm_parse_spi(skb, proto, &net_spi, &net_seq) == 0) {
		u32 spi = ntohl(net_spi);
		audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u",
				 spi, spi, ntohl(net_seq));
	}
	audit_log_end(audit_buf);
}
Contributors
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Tokens
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Commits
CommitProp
Paul Moore
104
100.00%
1
100.00%
Total
104
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail);
#endif /* CONFIG_AUDITSYSCALL */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
2047
16.04%
30
12.93%
Herbert Xu
1885
14.77%
30
12.93%
Alexey Kuznetsov
1033
8.09%
7
3.02%
Shinta Sugimoto
900
7.05%
1
0.43%
Hideaki Yoshifuji / 吉藤英明
880
6.89%
4
1.72%
Jamal Hadi Salim
876
6.86%
14
6.03%
Alexey Dobriyan
800
6.27%
24
10.34%
Paul Moore
583
4.57%
2
0.86%
Masahide Nakamura
455
3.56%
9
3.88%
Fan Du
435
3.41%
8
3.45%
Joy Latten
411
3.22%
4
1.72%
Florian Westphal
338
2.65%
14
6.03%
Kazunori Miyazawa
314
2.46%
2
0.86%
James Morris
224
1.75%
6
2.59%
Patrick McHardy
146
1.14%
8
3.45%
Nicolas Dichtel
139
1.09%
4
1.72%
Américo Wang
134
1.05%
3
1.29%
Adrian Bunk
128
1.00%
2
0.86%
Steffen Klassert
127
0.99%
7
3.02%
Horia Geantă
105
0.82%
1
0.43%
Yury Polyanskiy
104
0.81%
1
0.43%
Kunihiro Ishiguro
90
0.71%
1
0.43%
Noriaki Takamiya
83
0.65%
1
0.43%
Derek Atkins
71
0.56%
1
0.43%
Timo Teräs
70
0.55%
1
0.43%
Wei Yongjun
68
0.53%
2
0.86%
Thomas Egerer
56
0.44%
2
0.86%
Venkat Yekkirala
39
0.31%
1
0.43%
Martin Willi
36
0.28%
2
0.86%
Pavel Emelyanov
34
0.27%
2
0.86%
Tetsuo Handa
17
0.13%
1
0.43%
Eric Dumazet
16
0.13%
4
1.72%
Tushar Gohad
13
0.10%
1
0.43%
Jiri Benc
12
0.09%
1
0.43%
Harvey Harrison
10
0.08%
3
1.29%
Al Viro
10
0.08%
5
2.16%
Trent Jaeger
8
0.06%
1
0.43%
Eric W. Biedermann
7
0.05%
1
0.43%
Li RongQing
7
0.05%
3
1.29%
Ilan Tayari
7
0.05%
1
0.43%
Julia Lawall
7
0.05%
1
0.43%
Arnaud Ebalard
7
0.05%
1
0.43%
David Howells
4
0.03%
1
0.43%
Andrew Morton
4
0.03%
1
0.43%
Thomas Gleixner
4
0.03%
1
0.43%
Ying Xue
3
0.02%
1
0.43%
Tejun Heo
3
0.02%
1
0.43%
Ilpo Järvinen
2
0.02%
1
0.43%
Cheng Renquan
2
0.02%
1
0.43%
Mathias Krause
2
0.02%
1
0.43%
Eric Paris
2
0.02%
1
0.43%
Chuck Ebbert
1
0.01%
1
0.43%
Joakim Koskela
1
0.01%
1
0.43%
Aruna-Hewapathirane
1
0.01%
1
0.43%
Linus Torvalds
1
0.01%
1
0.43%
Panagiotis Issaris
1
0.01%
1
0.43%
Alexander Alemayhu
1
0.01%
1
0.43%
Total
12764
100.00%
232
100.00%
Directory: net/xfrm

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