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-rw-r--r--net/decnet/af_decnet.c13
-rw-r--r--net/decnet/dn_dev.c47
-rw-r--r--net/decnet/dn_fib.c6
-rw-r--r--net/decnet/dn_route.c6
4 files changed, 41 insertions, 31 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 7a58c87baf17..9ade3a6de954 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -675,7 +675,8 @@ char *dn_addr2asc(__u16 addr, char *buf)
-static int dn_create(struct net *net, struct socket *sock, int protocol)
+static int dn_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
{
struct sock *sk;
@@ -749,9 +750,9 @@ static int dn_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (!(saddr->sdn_flags & SDF_WILD)) {
if (le16_to_cpu(saddr->sdn_nodeaddrl)) {
- read_lock(&dev_base_lock);
+ rcu_read_lock();
ldev = NULL;
- for_each_netdev(&init_net, dev) {
+ for_each_netdev_rcu(&init_net, dev) {
if (!dev->dn_ptr)
continue;
if (dn_dev_islocal(dev, dn_saddr2dn(saddr))) {
@@ -759,7 +760,7 @@ static int dn_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
break;
}
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (ldev == NULL)
return -EADDRNOTAVAIL;
}
@@ -1955,7 +1956,7 @@ static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
}
if ((flags & MSG_TRYHARD) && sk->sk_dst_cache)
- dst_negative_advice(&sk->sk_dst_cache);
+ dst_negative_advice(&sk->sk_dst_cache, sk);
mss = scp->segsize_rem;
fctype = scp->services_rem & NSP_FC_MASK;
@@ -2325,7 +2326,7 @@ static const struct file_operations dn_socket_seq_fops = {
};
#endif
-static struct net_proto_family dn_family_ops = {
+static const struct net_proto_family dn_family_ops = {
.family = AF_DECnet,
.create = dn_create,
.owner = THIS_MODULE,
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 6e1f085db06a..6c916e2b8a84 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -68,7 +68,7 @@ extern struct neigh_table dn_neigh_table;
*/
__le16 decnet_address = 0;
-static DEFINE_RWLOCK(dndev_lock);
+static DEFINE_SPINLOCK(dndev_lock);
static struct net_device *decnet_default_device;
static BLOCKING_NOTIFIER_HEAD(dnaddr_chain);
@@ -557,7 +557,8 @@ rarok:
struct net_device *dn_dev_get_default(void)
{
struct net_device *dev;
- read_lock(&dndev_lock);
+
+ spin_lock(&dndev_lock);
dev = decnet_default_device;
if (dev) {
if (dev->dn_ptr)
@@ -565,7 +566,8 @@ struct net_device *dn_dev_get_default(void)
else
dev = NULL;
}
- read_unlock(&dndev_lock);
+ spin_unlock(&dndev_lock);
+
return dev;
}
@@ -575,13 +577,15 @@ int dn_dev_set_default(struct net_device *dev, int force)
int rv = -EBUSY;
if (!dev->dn_ptr)
return -ENODEV;
- write_lock(&dndev_lock);
+
+ spin_lock(&dndev_lock);
if (force || decnet_default_device == NULL) {
old = decnet_default_device;
decnet_default_device = dev;
rv = 0;
}
- write_unlock(&dndev_lock);
+ spin_unlock(&dndev_lock);
+
if (old)
dev_put(old);
return rv;
@@ -589,26 +593,29 @@ int dn_dev_set_default(struct net_device *dev, int force)
static void dn_dev_check_default(struct net_device *dev)
{
- write_lock(&dndev_lock);
+ spin_lock(&dndev_lock);
if (dev == decnet_default_device) {
decnet_default_device = NULL;
} else {
dev = NULL;
}
- write_unlock(&dndev_lock);
+ spin_unlock(&dndev_lock);
+
if (dev)
dev_put(dev);
}
+/*
+ * Called with RTNL
+ */
static struct dn_dev *dn_dev_by_index(int ifindex)
{
struct net_device *dev;
struct dn_dev *dn_dev = NULL;
- dev = dev_get_by_index(&init_net, ifindex);
- if (dev) {
+
+ dev = __dev_get_by_index(&init_net, ifindex);
+ if (dev)
dn_dev = dev->dn_ptr;
- dev_put(dev);
- }
return dn_dev;
}
@@ -826,13 +833,17 @@ static int dn_dev_get_first(struct net_device *dev, __le16 *addr)
struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
struct dn_ifaddr *ifa;
int rv = -ENODEV;
+
if (dn_db == NULL)
goto out;
+
+ rtnl_lock();
ifa = dn_db->ifa_list;
if (ifa != NULL) {
*addr = ifa->ifa_local;
rv = 0;
}
+ rtnl_unlock();
out:
return rv;
}
@@ -854,9 +865,7 @@ int dn_dev_bind_default(__le16 *addr)
dev = dn_dev_get_default();
last_chance:
if (dev) {
- read_lock(&dev_base_lock);
rv = dn_dev_get_first(dev, addr);
- read_unlock(&dev_base_lock);
dev_put(dev);
if (rv == 0 || dev == init_net.loopback_dev)
return rv;
@@ -1321,18 +1330,18 @@ static inline int is_dn_dev(struct net_device *dev)
}
static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
- __acquires(&dev_base_lock)
+ __acquires(rcu)
{
int i;
struct net_device *dev;
- read_lock(&dev_base_lock);
+ rcu_read_lock();
if (*pos == 0)
return SEQ_START_TOKEN;
i = 1;
- for_each_netdev(&init_net, dev) {
+ for_each_netdev_rcu(&init_net, dev) {
if (!is_dn_dev(dev))
continue;
@@ -1353,7 +1362,7 @@ static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
if (v == SEQ_START_TOKEN)
dev = net_device_entry(&init_net.dev_base_head);
- for_each_netdev_continue(&init_net, dev) {
+ for_each_netdev_continue_rcu(&init_net, dev) {
if (!is_dn_dev(dev))
continue;
@@ -1364,9 +1373,9 @@ static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
}
static void dn_dev_seq_stop(struct seq_file *seq, void *v)
- __releases(&dev_base_lock)
+ __releases(rcu)
{
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
static char *dn_type2asc(char type)
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c
index 27ea2e9b080a..fd641f65e092 100644
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -607,8 +607,8 @@ static void dn_fib_del_ifaddr(struct dn_ifaddr *ifa)
ASSERT_RTNL();
/* Scan device list */
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
dn_db = dev->dn_ptr;
if (dn_db == NULL)
continue;
@@ -619,7 +619,7 @@ static void dn_fib_del_ifaddr(struct dn_ifaddr *ifa)
}
}
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (found_it == 0) {
fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 16, ifa);
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 57662cabaf9b..860286a3921b 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -908,8 +908,8 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old
dev_put(dev_out);
goto out;
}
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
if (!dev->dn_ptr)
continue;
if (!dn_dev_islocal(dev, oldflp->fld_src))
@@ -922,7 +922,7 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old
dev_out = dev;
break;
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (dev_out == NULL)
goto out;
dev_hold(dev_out);
generated by cgit (git 2.34.1) at 2025-04-05 07:28:03 +0000