Change xfrm_policy and xfrm_state walking algorithm from O(n^2) to O(n).
This is achieved adding the entries to one more list which is used
solely for walking the entries.
This also fixes some races where the dump can have duplicate or missing
entries when the SPD/SADB is modified during an ongoing dump.
Dumping SADB with 20000 entries using "time ip xfrm state" the sys
time dropped from 1.012s to 0.080s.
Signed-off-by: Timo Teras <[EMAIL PROTECTED]>
---
include/linux/xfrm.h | 3 +-
include/net/xfrm.h | 52 ++++++++++++++++++++++++++++++-
net/key/af_key.c | 22 +++++++++++--
net/xfrm/xfrm_policy.c | 79 ++++++++++++++++++++++++++++--------------------
net/xfrm/xfrm_state.c | 53 ++++++++++++++++++++++----------
net/xfrm/xfrm_user.c | 71 ++++++++++++++++++++++++++-----------------
6 files changed, 195 insertions(+), 85 deletions(-)
diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 9b5b00c..60e7395 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -106,7 +106,8 @@ enum
{
XFRM_POLICY_TYPE_MAIN = 0,
XFRM_POLICY_TYPE_SUB = 1,
- XFRM_POLICY_TYPE_MAX = 2
+ XFRM_POLICY_TYPE_MAX = 2,
+ XFRM_POLICY_TYPE_ANY = 255
};
enum
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 5ebb9ba..a6a6adf 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -121,6 +121,7 @@ extern struct mutex xfrm_cfg_mutex;
struct xfrm_state
{
/* Note: bydst is re-used during gc */
+ struct list_head all;
struct hlist_node bydst;
struct hlist_node bysrc;
struct hlist_node byspi;
@@ -423,6 +424,7 @@ struct xfrm_tmpl
struct xfrm_policy
{
struct xfrm_policy *next;
+ struct list_head bytype;
struct hlist_node bydst;
struct hlist_node byidx;
@@ -1151,6 +1153,18 @@ struct xfrm6_tunnel {
int priority;
};
+struct xfrm_state_walk {
+ u8 proto;
+ struct xfrm_state *state;
+ int count;
+};
+
+struct xfrm_policy_walk {
+ u8 type, cur_type;
+ struct xfrm_policy *policy;
+ int count;
+};
+
extern void xfrm_init(void);
extern void xfrm4_init(void);
extern void xfrm_state_init(void);
@@ -1175,7 +1189,23 @@ static inline void xfrm6_fini(void)
extern int xfrm_proc_init(void);
#endif
-extern int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int,
void*), void *);
+static inline void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto)
+{
+ walk->proto = proto;
+ walk->state = NULL;
+ walk->count = 0;
+}
+
+static inline void xfrm_state_walk_done(struct xfrm_state_walk *walk)
+{
+ if (walk->state != NULL) {
+ xfrm_state_put(walk->state);
+ walk->state = NULL;
+ }
+}
+
+extern int xfrm_state_walk(struct xfrm_state_walk *walk,
+ int (*func)(struct xfrm_state *, int, void*), void
*);
extern struct xfrm_state *xfrm_state_alloc(void);
extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr,
xfrm_address_t *saddr,
struct flowi *fl, struct xfrm_tmpl
*tmpl,
@@ -1297,7 +1327,25 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk,
struct sk_buff *skb)
#endif
struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
-extern int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int,
int, void*), void *);
+
+static inline void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8
type)
+{
+ walk->cur_type = XFRM_POLICY_TYPE_MAIN;
+ walk->type = type;
+ walk->policy = NULL;
+ walk->count = 0;
+}
+
+static inline void xfrm_policy_walk_done(struct xfrm_policy_walk *walk)
+{
+ if (walk->policy != NULL) {
+ xfrm_pol_put(walk->policy);
+ walk->policy = NULL;
+ }
+}
+
+extern int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+ int (*func)(struct xfrm_policy *, int, int, void*), void *);
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
struct xfrm_selector *sel,
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 16b72b5..d24bb9c 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1742,12 +1742,18 @@ static int pfkey_dump(struct sock *sk, struct sk_buff
*skb, struct sadb_msg *hdr
{
u8 proto;
struct pfkey_dump_data data = { .skb = skb, .hdr = hdr, .sk = sk };
+ struct xfrm_state_walk walk;
+ int rc;
proto = pfkey_satype2proto(hdr->sadb_msg_satype);
if (proto == 0)
return -EINVAL;
- return xfrm_state_walk(proto, dump_sa, &data);
+ xfrm_state_walk_init(&walk, proto);
+ rc = xfrm_state_walk(&walk, dump_sa, &data);
+ xfrm_state_walk_done(&walk);
+
+ return rc;
}
static int pfkey_promisc(struct sock *sk, struct sk_buff *skb, struct sadb_msg
*hdr, void **ext_hdrs)
@@ -1780,6 +1786,7 @@ static int check_reqid(struct xfrm_policy *xp, int dir,
int count, void *ptr)
static u32 gen_reqid(void)
{
+ struct xfrm_policy_walk walk;
u32 start;
static u32 reqid = IPSEC_MANUAL_REQID_MAX;
@@ -1788,9 +1795,10 @@ static u32 gen_reqid(void)
++reqid;
if (reqid == 0)
reqid = IPSEC_MANUAL_REQID_MAX+1;
- if (xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN, check_reqid,
- (void*)&reqid) != -EEXIST)
+ xfrm_policy_walk_init(&walk, XFRM_POLICY_TYPE_MAIN);
+ if (xfrm_policy_walk(&walk, check_reqid, (void*)&reqid) !=
-EEXIST)
return reqid;
+ xfrm_policy_walk_done(&walk);
} while (reqid != start);
return 0;
}
@@ -2664,8 +2672,14 @@ static int dump_sp(struct xfrm_policy *xp, int dir, int
count, void *ptr)
static int pfkey_spddump(struct sock *sk, struct sk_buff *skb, struct sadb_msg
*hdr, void **ext_hdrs)
{
struct pfkey_dump_data data = { .skb = skb, .hdr = hdr, .sk = sk };
+ struct xfrm_policy_walk walk;
+ int rc;
+
+ xfrm_policy_walk_init(&walk, XFRM_POLICY_TYPE_MAIN);
+ rc = xfrm_policy_walk(&walk, dump_sp, &data);
+ xfrm_policy_walk_done(&walk);
- return xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN, dump_sp, &data);
+ return rc;
}
static int key_notify_policy_flush(struct km_event *c)
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 47219f9..0966bd9 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -46,6 +46,7 @@ EXPORT_SYMBOL(xfrm_cfg_mutex);
static DEFINE_RWLOCK(xfrm_policy_lock);
+static struct list_head xfrm_policy_bytype[XFRM_POLICY_TYPE_MAX];
unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
EXPORT_SYMBOL(xfrm_policy_count);
@@ -208,6 +209,7 @@ struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp)
policy = kzalloc(sizeof(struct xfrm_policy), gfp);
if (policy) {
+ INIT_LIST_HEAD(&policy->bytype);
INIT_HLIST_NODE(&policy->bydst);
INIT_HLIST_NODE(&policy->byidx);
rwlock_init(&policy->lock);
@@ -230,6 +232,10 @@ void xfrm_policy_destroy(struct xfrm_policy *policy)
if (del_timer(&policy->timer))
BUG();
+ write_lock_bh(&xfrm_policy_lock);
+ list_del(&policy->bytype);
+ write_unlock_bh(&xfrm_policy_lock);
+
security_xfrm_policy_free(policy);
kfree(policy);
}
@@ -568,6 +574,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy,
int excl)
policy->curlft.use_time = 0;
if (!mod_timer(&policy->timer, jiffies + HZ))
xfrm_pol_hold(policy);
+ list_add_tail(&policy->bytype, &xfrm_policy_bytype[policy->type]);
write_unlock_bh(&xfrm_policy_lock);
if (delpol)
@@ -806,57 +813,60 @@ out:
}
EXPORT_SYMBOL(xfrm_policy_flush);
-int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int, int,
void*),
+int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+ int (*func)(struct xfrm_policy *, int, int, void*),
void *data)
{
- struct xfrm_policy *pol, *last = NULL;
- struct hlist_node *entry;
- int dir, last_dir = 0, count, error;
+ struct xfrm_policy *old, *pol, *last = NULL;
+ int error = 0;
+
+ if (walk->type >= XFRM_POLICY_TYPE_MAX &&
+ walk->type != XFRM_POLICY_TYPE_ANY)
+ return -EINVAL;
+ if (walk->policy == NULL && walk->count != 0)
+ return 0;
+
+ old = pol = walk->policy;
+ walk->policy = NULL;
read_lock_bh(&xfrm_policy_lock);
- count = 0;
- for (dir = 0; dir < 2*XFRM_POLICY_MAX; dir++) {
- struct hlist_head *table = xfrm_policy_bydst[dir].table;
- int i;
+ for (; walk->cur_type < XFRM_POLICY_TYPE_MAX; walk->cur_type++) {
+ if (walk->type != walk->cur_type &&
+ walk->type != XFRM_POLICY_TYPE_ANY)
+ continue;
- hlist_for_each_entry(pol, entry,
- &xfrm_policy_inexact[dir], bydst) {
- if (pol->type != type)
+ if (pol == NULL) {
+ pol =
list_first_entry(&xfrm_policy_bytype[walk->cur_type],
+ struct xfrm_policy, bytype);
+ }
+ list_for_each_entry_from(pol,
&xfrm_policy_bytype[walk->cur_type], bytype) {
+ if (pol->dead)
continue;
if (last) {
- error = func(last, last_dir % XFRM_POLICY_MAX,
- count, data);
- if (error)
+ error = func(last,
xfrm_policy_id2dir(last->index),
+ walk->count, data);
+ if (error) {
+ xfrm_pol_hold(last);
+ walk->policy = last;
goto out;
- }
- last = pol;
- last_dir = dir;
- count++;
- }
- for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) {
- hlist_for_each_entry(pol, entry, table + i, bydst) {
- if (pol->type != type)
- continue;
- if (last) {
- error = func(last, last_dir %
XFRM_POLICY_MAX,
- count, data);
- if (error)
- goto out;
}
- last = pol;
- last_dir = dir;
- count++;
}
+ last = pol;
+ walk->count++;
}
+ pol = NULL;
}
- if (count == 0) {
+ if (walk->count == 0) {
error = -ENOENT;
goto out;
}
- error = func(last, last_dir % XFRM_POLICY_MAX, 0, data);
+ if (last)
+ error = func(last, xfrm_policy_id2dir(last->index), 0, data);
out:
read_unlock_bh(&xfrm_policy_lock);
+ if (old != NULL)
+ xfrm_pol_put(old);
return error;
}
EXPORT_SYMBOL(xfrm_policy_walk);
@@ -2349,6 +2359,9 @@ static void __init xfrm_policy_init(void)
panic("XFRM: failed to allocate bydst hash\n");
}
+ for (dir = 0; dir < XFRM_POLICY_TYPE_MAX; dir++)
+ INIT_LIST_HEAD(&xfrm_policy_bytype[dir]);
+
INIT_WORK(&xfrm_policy_gc_work, xfrm_policy_gc_task);
register_netdevice_notifier(&xfrm_dev_notifier);
}
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3003503..e0a1533 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -50,6 +50,7 @@ static DEFINE_SPINLOCK(xfrm_state_lock);
* 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.
*/
+static LIST_HEAD(xfrm_state_all);
static struct hlist_head *xfrm_state_bydst __read_mostly;
static struct hlist_head *xfrm_state_bysrc __read_mostly;
static struct hlist_head *xfrm_state_byspi __read_mostly;
@@ -510,6 +511,7 @@ struct xfrm_state *xfrm_state_alloc(void)
if (x) {
atomic_set(&x->refcnt, 1);
atomic_set(&x->tunnel_users, 0);
+ INIT_LIST_HEAD(&x->all);
INIT_HLIST_NODE(&x->bydst);
INIT_HLIST_NODE(&x->bysrc);
INIT_HLIST_NODE(&x->byspi);
@@ -533,6 +535,10 @@ void __xfrm_state_destroy(struct xfrm_state *x)
{
BUG_TRAP(x->km.state == XFRM_STATE_DEAD);
+ spin_lock_bh(&xfrm_state_lock);
+ list_del(&x->all);
+ spin_unlock_bh(&xfrm_state_lock);
+
spin_lock_bh(&xfrm_state_gc_lock);
hlist_add_head(&x->bydst, &xfrm_state_gc_list);
spin_unlock_bh(&xfrm_state_gc_lock);
@@ -909,6 +915,8 @@ static void __xfrm_state_insert(struct xfrm_state *x)
x->genid = ++xfrm_state_genid;
+ list_add_tail(&x->all, &xfrm_state_all);
+
h = xfrm_dst_hash(&x->id.daddr, &x->props.saddr,
x->props.reqid, x->props.family);
hlist_add_head(&x->bydst, xfrm_state_bydst+h);
@@ -1518,36 +1526,47 @@ unlock:
}
EXPORT_SYMBOL(xfrm_alloc_spi);
-int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*),
+int xfrm_state_walk(struct xfrm_state_walk *walk,
+ int (*func)(struct xfrm_state *, int, void*),
void *data)
{
- int i;
- struct xfrm_state *x, *last = NULL;
- struct hlist_node *entry;
- int count = 0;
+ struct xfrm_state *old, *x, *last = NULL;
int err = 0;
+ if (walk->state == NULL && walk->count != 0)
+ return 0;
+
+ old = x = walk->state;
+ walk->state = NULL;
spin_lock_bh(&xfrm_state_lock);
- for (i = 0; i <= xfrm_state_hmask; i++) {
- hlist_for_each_entry(x, entry, xfrm_state_bydst+i, bydst) {
- if (!xfrm_id_proto_match(x->id.proto, proto))
- continue;
- if (last) {
- err = func(last, count, data);
- if (err)
- goto out;
+ if (x == NULL)
+ x = list_first_entry(&xfrm_state_all, struct xfrm_state, all);
+ list_for_each_entry_from(x, &xfrm_state_all, all) {
+ if (x->km.state == XFRM_STATE_DEAD)
+ continue;
+ if (!xfrm_id_proto_match(x->id.proto, walk->proto))
+ continue;
+ if (last) {
+ err = func(last, walk->count, data);
+ if (err) {
+ xfrm_state_hold(last);
+ walk->state = last;
+ goto out;
}
- last = x;
- count++;
}
+ last = x;
+ walk->count++;
}
- if (count == 0) {
+ if (walk->count == 0) {
err = -ENOENT;
goto out;
}
- err = func(last, 0, data);
+ if (last)
+ err = func(last, 0, data);
out:
spin_unlock_bh(&xfrm_state_lock);
+ if (old != NULL)
+ xfrm_state_put(old);
return err;
}
EXPORT_SYMBOL(xfrm_state_walk);
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index e0ccdf2..e50f740 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -472,8 +472,6 @@ struct xfrm_dump_info {
struct sk_buff *out_skb;
u32 nlmsg_seq;
u16 nlmsg_flags;
- int start_idx;
- int this_idx;
};
static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
@@ -538,9 +536,6 @@ static int dump_one_state(struct xfrm_state *x, int count,
void *ptr)
struct nlmsghdr *nlh;
int err;
- if (sp->this_idx < sp->start_idx)
- goto out;
-
nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags);
if (nlh == NULL)
@@ -553,8 +548,6 @@ static int dump_one_state(struct xfrm_state *x, int count,
void *ptr)
goto nla_put_failure;
nlmsg_end(skb, nlh);
-out:
- sp->this_idx++;
return 0;
nla_put_failure:
@@ -562,18 +555,32 @@ nla_put_failure:
return err;
}
+static int xfrm_dump_sa_done(struct netlink_callback *cb)
+{
+ struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
+ xfrm_state_walk_done(walk);
+ return 0;
+}
+
static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
struct xfrm_dump_info info;
+ BUILD_BUG_ON(sizeof(struct xfrm_state_walk) >
+ sizeof(cb->args) - sizeof(cb->args[0]));
+
info.in_skb = cb->skb;
info.out_skb = skb;
info.nlmsg_seq = cb->nlh->nlmsg_seq;
info.nlmsg_flags = NLM_F_MULTI;
- info.this_idx = 0;
- info.start_idx = cb->args[0];
- (void) xfrm_state_walk(0, dump_one_state, &info);
- cb->args[0] = info.this_idx;
+
+ if (!cb->args[0]) {
+ cb->args[0] = 1;
+ xfrm_state_walk_init(walk, 0);
+ }
+
+ (void) xfrm_state_walk(walk, dump_one_state, &info);
return skb->len;
}
@@ -592,7 +599,6 @@ static struct sk_buff *xfrm_state_netlink(struct sk_buff
*in_skb,
info.out_skb = skb;
info.nlmsg_seq = seq;
info.nlmsg_flags = 0;
- info.this_idx = info.start_idx = 0;
if (dump_one_state(x, 0, &info)) {
kfree_skb(skb);
@@ -1169,9 +1175,6 @@ static int dump_one_policy(struct xfrm_policy *xp, int
dir, int count, void *ptr
struct sk_buff *skb = sp->out_skb;
struct nlmsghdr *nlh;
- if (sp->this_idx < sp->start_idx)
- goto out;
-
nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags);
if (nlh == NULL)
@@ -1187,8 +1190,6 @@ static int dump_one_policy(struct xfrm_policy *xp, int
dir, int count, void *ptr
goto nlmsg_failure;
nlmsg_end(skb, nlh);
-out:
- sp->this_idx++;
return 0;
nlmsg_failure:
@@ -1196,21 +1197,33 @@ nlmsg_failure:
return -EMSGSIZE;
}
+static int xfrm_dump_policy_done(struct netlink_callback *cb)
+{
+ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)
&cb->args[1];
+
+ xfrm_policy_walk_done(walk);
+ return 0;
+}
+
static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)
&cb->args[1];
struct xfrm_dump_info info;
+ BUILD_BUG_ON(sizeof(struct xfrm_policy_walk) >
+ sizeof(cb->args) - sizeof(cb->args[0]));
+
info.in_skb = cb->skb;
info.out_skb = skb;
info.nlmsg_seq = cb->nlh->nlmsg_seq;
info.nlmsg_flags = NLM_F_MULTI;
- info.this_idx = 0;
- info.start_idx = cb->args[0];
- (void) xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN, dump_one_policy, &info);
-#ifdef CONFIG_XFRM_SUB_POLICY
- (void) xfrm_policy_walk(XFRM_POLICY_TYPE_SUB, dump_one_policy, &info);
-#endif
- cb->args[0] = info.this_idx;
+
+ if (!cb->args[0]) {
+ cb->args[0] = 1;
+ xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
+ }
+
+ (void) xfrm_policy_walk(walk, dump_one_policy, &info);
return skb->len;
}
@@ -1230,7 +1243,6 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff
*in_skb,
info.out_skb = skb;
info.nlmsg_seq = seq;
info.nlmsg_flags = 0;
- info.this_idx = info.start_idx = 0;
if (dump_one_policy(xp, dir, 0, &info) < 0) {
kfree_skb(skb);
@@ -1827,15 +1839,18 @@ static const struct nla_policy
xfrma_policy[XFRMA_MAX+1] = {
static struct xfrm_link {
int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
int (*dump)(struct sk_buff *, struct netlink_callback *);
+ int (*done)(struct netlink_callback *);
} xfrm_dispatch[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_NEWSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
[XFRM_MSG_DELSA - XFRM_MSG_BASE] = { .doit = xfrm_del_sa },
[XFRM_MSG_GETSA - XFRM_MSG_BASE] = { .doit = xfrm_get_sa,
- .dump = xfrm_dump_sa },
+ .dump = xfrm_dump_sa,
+ .done = xfrm_dump_sa_done },
[XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
[XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy },
[XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy,
- .dump = xfrm_dump_policy },
+ .dump = xfrm_dump_policy,
+ .done =
xfrm_dump_policy_done },
[XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi },
[XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_acquire },
[XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_sa_expire },
@@ -1874,7 +1889,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct
nlmsghdr *nlh)
if (link->dump == NULL)
return -EINVAL;
- return netlink_dump_start(xfrm_nl, skb, nlh, link->dump, NULL);
+ return netlink_dump_start(xfrm_nl, skb, nlh, link->dump,
link->done);
}
err = nlmsg_parse(nlh, xfrm_msg_min[type], attrs, XFRMA_MAX,
--
1.5.2.5
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