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Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_algo.c3
-rw-r--r--net/xfrm/xfrm_output.c6
-rw-r--r--net/xfrm/xfrm_proc.c1
-rw-r--r--net/xfrm/xfrm_state.c131
4 files changed, 69 insertions, 72 deletions
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 4ce2d93162c1..f9a549554740 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -700,8 +700,7 @@ void xfrm_probe_algs(void)
}
for (i = 0; i < ealg_entries(); i++) {
- status = crypto_has_blkcipher(ealg_list[i].name, 0,
- CRYPTO_ALG_ASYNC);
+ status = crypto_has_ablkcipher(ealg_list[i].name, 0, 0);
if (ealg_list[i].available != status)
ealg_list[i].available = status;
}
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 95a338c89f99..3670526e70b9 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -61,6 +61,12 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
}
spin_lock_bh(&x->lock);
+
+ if (unlikely(x->km.state != XFRM_STATE_VALID)) {
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEINVALID);
+ goto error_nolock;
+ }
+
err = xfrm_state_check_expire(x);
if (err) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEEXPIRED);
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
index d0a1af8ed584..603903853e89 100644
--- a/net/xfrm/xfrm_proc.c
+++ b/net/xfrm/xfrm_proc.c
@@ -43,6 +43,7 @@ static const struct snmp_mib xfrm_mib_list[] = {
SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
SNMP_MIB_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
+ SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
SNMP_MIB_SENTINEL
};
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3459692092ec..0adae918a7a2 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -158,8 +158,8 @@ out_unlock:
mutex_unlock(&hash_resize_mutex);
}
-static DEFINE_RWLOCK(xfrm_state_afinfo_lock);
-static struct xfrm_state_afinfo *xfrm_state_afinfo[NPROTO];
+static DEFINE_SPINLOCK(xfrm_state_afinfo_lock);
+static struct xfrm_state_afinfo __rcu *xfrm_state_afinfo[NPROTO];
static DEFINE_SPINLOCK(xfrm_state_gc_lock);
@@ -168,58 +168,45 @@ int __xfrm_state_delete(struct xfrm_state *x);
int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);
void km_state_expired(struct xfrm_state *x, int hard, u32 portid);
-static struct xfrm_state_afinfo *xfrm_state_lock_afinfo(unsigned int family)
-{
- struct xfrm_state_afinfo *afinfo;
- if (unlikely(family >= NPROTO))
- return NULL;
- write_lock_bh(&xfrm_state_afinfo_lock);
- afinfo = xfrm_state_afinfo[family];
- if (unlikely(!afinfo))
- write_unlock_bh(&xfrm_state_afinfo_lock);
- return afinfo;
-}
-
-static void xfrm_state_unlock_afinfo(struct xfrm_state_afinfo *afinfo)
- __releases(xfrm_state_afinfo_lock)
-{
- write_unlock_bh(&xfrm_state_afinfo_lock);
-}
-
+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_lock_afinfo(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;
- xfrm_state_unlock_afinfo(afinfo);
+ spin_unlock_bh(&xfrm_type_lock);
+ xfrm_state_put_afinfo(afinfo);
return err;
}
EXPORT_SYMBOL(xfrm_register_type);
int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family)
{
- struct xfrm_state_afinfo *afinfo = xfrm_state_lock_afinfo(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;
- xfrm_state_unlock_afinfo(afinfo);
+ spin_unlock_bh(&xfrm_type_lock);
+ xfrm_state_put_afinfo(afinfo);
return err;
}
EXPORT_SYMBOL(xfrm_unregister_type);
@@ -256,6 +243,7 @@ static void xfrm_put_type(const struct xfrm_type *type)
module_put(type->owner);
}
+static DEFINE_SPINLOCK(xfrm_mode_lock);
int xfrm_register_mode(struct xfrm_mode *mode, int family)
{
struct xfrm_state_afinfo *afinfo;
@@ -265,12 +253,13 @@ int xfrm_register_mode(struct xfrm_mode *mode, int family)
if (unlikely(mode->encap >= XFRM_MODE_MAX))
return -EINVAL;
- afinfo = xfrm_state_lock_afinfo(family);
+ 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;
@@ -283,7 +272,8 @@ int xfrm_register_mode(struct xfrm_mode *mode, int family)
err = 0;
out:
- xfrm_state_unlock_afinfo(afinfo);
+ spin_unlock_bh(&xfrm_mode_lock);
+ xfrm_state_put_afinfo(afinfo);
return err;
}
EXPORT_SYMBOL(xfrm_register_mode);
@@ -297,19 +287,21 @@ int xfrm_unregister_mode(struct xfrm_mode *mode, int family)
if (unlikely(mode->encap >= XFRM_MODE_MAX))
return -EINVAL;
- afinfo = xfrm_state_lock_afinfo(family);
+ 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;
}
- xfrm_state_unlock_afinfo(afinfo);
+ spin_unlock_bh(&xfrm_mode_lock);
+ xfrm_state_put_afinfo(afinfo);
return err;
}
EXPORT_SYMBOL(xfrm_unregister_mode);
@@ -1370,9 +1362,6 @@ int xfrm_state_check_expire(struct xfrm_state *x)
if (!x->curlft.use_time)
x->curlft.use_time = get_seconds();
- if (x->km.state != XFRM_STATE_VALID)
- return -EINVAL;
-
if (x->curlft.bytes >= x->lft.hard_byte_limit ||
x->curlft.packets >= x->lft.hard_packet_limit) {
x->km.state = XFRM_STATE_EXPIRED;
@@ -1648,27 +1637,26 @@ static void xfrm_replay_timer_handler(unsigned long data)
}
static LIST_HEAD(xfrm_km_list);
-static DEFINE_RWLOCK(xfrm_km_lock);
void km_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c)
{
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list)
+ rcu_read_lock();
+ list_for_each_entry_rcu(km, &xfrm_km_list, list)
if (km->notify_policy)
km->notify_policy(xp, dir, c);
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
}
void km_state_notify(struct xfrm_state *x, const struct km_event *c)
{
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list)
+ rcu_read_lock();
+ list_for_each_entry_rcu(km, &xfrm_km_list, list)
if (km->notify)
km->notify(x, c);
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
}
EXPORT_SYMBOL(km_policy_notify);
@@ -1698,13 +1686,13 @@ int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol)
int err = -EINVAL, acqret;
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list) {
+ rcu_read_lock();
+ list_for_each_entry_rcu(km, &xfrm_km_list, list) {
acqret = km->acquire(x, t, pol);
if (!acqret)
err = acqret;
}
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(km_query);
@@ -1714,14 +1702,14 @@ int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
int err = -EINVAL;
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list) {
+ 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;
}
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(km_new_mapping);
@@ -1750,15 +1738,15 @@ int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
int ret;
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list) {
+ 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;
}
}
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(km_migrate);
@@ -1770,15 +1758,15 @@ int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address
int ret;
struct xfrm_mgr *km;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list) {
+ 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;
}
}
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(km_report);
@@ -1802,14 +1790,14 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen
goto out;
err = -EINVAL;
- read_lock(&xfrm_km_lock);
- list_for_each_entry(km, &xfrm_km_list, list) {
+ 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;
}
- read_unlock(&xfrm_km_lock);
+ rcu_read_unlock();
if (err >= 0) {
xfrm_sk_policy_insert(sk, err, pol);
@@ -1823,20 +1811,23 @@ out:
}
EXPORT_SYMBOL(xfrm_user_policy);
+static DEFINE_SPINLOCK(xfrm_km_lock);
+
int xfrm_register_km(struct xfrm_mgr *km)
{
- write_lock_bh(&xfrm_km_lock);
- list_add_tail(&km->list, &xfrm_km_list);
- write_unlock_bh(&xfrm_km_lock);
+ spin_lock_bh(&xfrm_km_lock);
+ list_add_tail_rcu(&km->list, &xfrm_km_list);
+ spin_unlock_bh(&xfrm_km_lock);
return 0;
}
EXPORT_SYMBOL(xfrm_register_km);
int xfrm_unregister_km(struct xfrm_mgr *km)
{
- write_lock_bh(&xfrm_km_lock);
- list_del(&km->list);
- write_unlock_bh(&xfrm_km_lock);
+ spin_lock_bh(&xfrm_km_lock);
+ list_del_rcu(&km->list);
+ spin_unlock_bh(&xfrm_km_lock);
+ synchronize_rcu();
return 0;
}
EXPORT_SYMBOL(xfrm_unregister_km);
@@ -1848,12 +1839,12 @@ int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo)
return -EINVAL;
if (unlikely(afinfo->family >= NPROTO))
return -EAFNOSUPPORT;
- write_lock_bh(&xfrm_state_afinfo_lock);
+ spin_lock_bh(&xfrm_state_afinfo_lock);
if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL))
err = -ENOBUFS;
else
- xfrm_state_afinfo[afinfo->family] = afinfo;
- write_unlock_bh(&xfrm_state_afinfo_lock);
+ rcu_assign_pointer(xfrm_state_afinfo[afinfo->family], afinfo);
+ spin_unlock_bh(&xfrm_state_afinfo_lock);
return err;
}
EXPORT_SYMBOL(xfrm_state_register_afinfo);
@@ -1865,14 +1856,15 @@ int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo)
return -EINVAL;
if (unlikely(afinfo->family >= NPROTO))
return -EAFNOSUPPORT;
- write_lock_bh(&xfrm_state_afinfo_lock);
+ spin_lock_bh(&xfrm_state_afinfo_lock);
if (likely(xfrm_state_afinfo[afinfo->family] != NULL)) {
if (unlikely(xfrm_state_afinfo[afinfo->family] != afinfo))
err = -EINVAL;
else
- xfrm_state_afinfo[afinfo->family] = NULL;
+ RCU_INIT_POINTER(xfrm_state_afinfo[afinfo->family], NULL);
}
- write_unlock_bh(&xfrm_state_afinfo_lock);
+ spin_unlock_bh(&xfrm_state_afinfo_lock);
+ synchronize_rcu();
return err;
}
EXPORT_SYMBOL(xfrm_state_unregister_afinfo);
@@ -1882,17 +1874,16 @@ static struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family)
struct xfrm_state_afinfo *afinfo;
if (unlikely(family >= NPROTO))
return NULL;
- read_lock(&xfrm_state_afinfo_lock);
- afinfo = xfrm_state_afinfo[family];
+ rcu_read_lock();
+ afinfo = rcu_dereference(xfrm_state_afinfo[family]);
if (unlikely(!afinfo))
- read_unlock(&xfrm_state_afinfo_lock);
+ rcu_read_unlock();
return afinfo;
}
static void xfrm_state_put_afinfo(struct xfrm_state_afinfo *afinfo)
- __releases(xfrm_state_afinfo_lock)
{
- read_unlock(&xfrm_state_afinfo_lock);
+ rcu_read_unlock();
}
/* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-01 17:36:36 +0000