diff options
Diffstat (limited to 'net/decnet')
-rw-r--r-- | net/decnet/af_decnet.c | 13 | ||||
-rw-r--r-- | net/decnet/dn_dev.c | 47 | ||||
-rw-r--r-- | net/decnet/dn_fib.c | 6 | ||||
-rw-r--r-- | net/decnet/dn_route.c | 6 |
4 files changed, 41 insertions, 31 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index 7a58c87..9ade3a6 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 6e1f085..6c916e2 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 27ea2e9..fd641f6 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 57662ca..860286a 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); |