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-rw-r--r--drivers/net/bonding/bond_main.c19
-rw-r--r--drivers/net/bonding/bond_netlink.c3
-rw-r--r--drivers/net/bonding/bond_options.c2
-rw-r--r--drivers/net/bonding/bond_procfs.c2
-rw-r--r--drivers/net/bonding/bond_sysfs.c25
-rw-r--r--drivers/net/bonding/bond_sysfs_slave.c2
6 files changed, 25 insertions, 28 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index cb66310c8d..2ed0da0684 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1121,13 +1121,10 @@ static struct slave *bond_find_best_slave(struct bonding *bond)
return bestslave;
}
+/* must be called in RCU critical section or with RTNL held */
static bool bond_should_notify_peers(struct bonding *bond)
{
- struct slave *slave;
-
- rcu_read_lock();
- slave = rcu_dereference(bond->curr_active_slave);
- rcu_read_unlock();
+ struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);
if (!slave || !bond->send_peer_notif ||
bond->send_peer_notif %
@@ -3014,8 +3011,8 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
tags = NULL;
/* Find out through which dev should the packet go */
- rt = ip_route_output(dev_net(bond->dev), targets[i], 0,
- RTO_ONLINK, 0);
+ rt = ip_route_output(dev_net(bond->dev), targets[i], 0, 0, 0,
+ RT_SCOPE_LINK);
if (IS_ERR(rt)) {
/* there's no route to target - try to send arp
* probe to generate any traffic (arp_validate=0)
@@ -4710,7 +4707,7 @@ static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
}
}
- bond_dev->mtu = new_mtu;
+ WRITE_ONCE(bond_dev->mtu, new_mtu);
return 0;
@@ -5245,7 +5242,7 @@ static inline int bond_slave_override(struct bonding *bond,
/* Find out if any slaves have the same mapping as this skb. */
bond_for_each_slave_rcu(bond, slave, iter) {
- if (slave->queue_id == skb_get_queue_mapping(skb)) {
+ if (READ_ONCE(slave->queue_id) == skb_get_queue_mapping(skb)) {
if (bond_slave_is_up(slave) &&
slave->link == BOND_LINK_UP) {
bond_dev_queue_xmit(bond, skb, slave->dev);
@@ -5936,7 +5933,7 @@ static void bond_uninit(struct net_device *bond_dev)
bond_set_slave_arr(bond, NULL, NULL);
- list_del(&bond->bond_list);
+ list_del_rcu(&bond->bond_list);
bond_debug_unregister(bond);
}
@@ -6350,7 +6347,7 @@ static int bond_init(struct net_device *bond_dev)
spin_lock_init(&bond->stats_lock);
netdev_lockdep_set_classes(bond_dev);
- list_add_tail(&bond->bond_list, &bn->dev_list);
+ list_add_tail_rcu(&bond->bond_list, &bn->dev_list);
bond_prepare_sysfs_group(bond);
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 29b4c3d1b9..2a6a424806 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -51,7 +51,8 @@ static int bond_fill_slave_info(struct sk_buff *skb,
slave_dev->addr_len, slave->perm_hwaddr))
goto nla_put_failure;
- if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
+ if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID,
+ READ_ONCE(slave->queue_id)))
goto nla_put_failure;
if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio))
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index fea1d87a97..bc80fb6397 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -1589,7 +1589,7 @@ static int bond_option_queue_id_set(struct bonding *bond,
goto err_no_cmd;
/* Actually set the qids for the slave */
- update_slave->queue_id = qid;
+ WRITE_ONCE(update_slave->queue_id, qid);
out:
return ret;
diff --git a/drivers/net/bonding/bond_procfs.c b/drivers/net/bonding/bond_procfs.c
index 43be458422..7edf72ec81 100644
--- a/drivers/net/bonding/bond_procfs.c
+++ b/drivers/net/bonding/bond_procfs.c
@@ -209,7 +209,7 @@ static void bond_info_show_slave(struct seq_file *seq,
seq_printf(seq, "Permanent HW addr: %*phC\n",
slave->dev->addr_len, slave->perm_hwaddr);
- seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
+ seq_printf(seq, "Slave queue ID: %d\n", READ_ONCE(slave->queue_id));
if (BOND_MODE(bond) == BOND_MODE_8023AD) {
const struct port *port = &SLAVE_AD_INFO(slave)->port;
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 2805135a72..1e13bb1705 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -37,12 +37,12 @@ static ssize_t bonding_show_bonds(const struct class *cls,
{
const struct bond_net *bn =
container_of_const(attr, struct bond_net, class_attr_bonding_masters);
- int res = 0;
struct bonding *bond;
+ int res = 0;
- rtnl_lock();
+ rcu_read_lock();
- list_for_each_entry(bond, &bn->dev_list, bond_list) {
+ list_for_each_entry_rcu(bond, &bn->dev_list, bond_list) {
if (res > (PAGE_SIZE - IFNAMSIZ)) {
/* not enough space for another interface name */
if ((PAGE_SIZE - res) > 10)
@@ -55,7 +55,7 @@ static ssize_t bonding_show_bonds(const struct class *cls,
if (res)
buf[res-1] = '\n'; /* eat the leftover space */
- rtnl_unlock();
+ rcu_read_unlock();
return res;
}
@@ -170,10 +170,9 @@ static ssize_t bonding_show_slaves(struct device *d,
struct slave *slave;
int res = 0;
- if (!rtnl_trylock())
- return restart_syscall();
+ rcu_read_lock();
- bond_for_each_slave(bond, slave, iter) {
+ bond_for_each_slave_rcu(bond, slave, iter) {
if (res > (PAGE_SIZE - IFNAMSIZ)) {
/* not enough space for another interface name */
if ((PAGE_SIZE - res) > 10)
@@ -184,7 +183,7 @@ static ssize_t bonding_show_slaves(struct device *d,
res += sysfs_emit_at(buf, res, "%s ", slave->dev->name);
}
- rtnl_unlock();
+ rcu_read_unlock();
if (res)
buf[res-1] = '\n'; /* eat the leftover space */
@@ -626,10 +625,9 @@ static ssize_t bonding_show_queue_id(struct device *d,
struct slave *slave;
int res = 0;
- if (!rtnl_trylock())
- return restart_syscall();
+ rcu_read_lock();
- bond_for_each_slave(bond, slave, iter) {
+ bond_for_each_slave_rcu(bond, slave, iter) {
if (res > (PAGE_SIZE - IFNAMSIZ - 6)) {
/* not enough space for another interface_name:queue_id pair */
if ((PAGE_SIZE - res) > 10)
@@ -638,12 +636,13 @@ static ssize_t bonding_show_queue_id(struct device *d,
break;
}
res += sysfs_emit_at(buf, res, "%s:%d ",
- slave->dev->name, slave->queue_id);
+ slave->dev->name,
+ READ_ONCE(slave->queue_id));
}
if (res)
buf[res-1] = '\n'; /* eat the leftover space */
- rtnl_unlock();
+ rcu_read_unlock();
return res;
}
diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c
index 313866f2c0..36d0e8440b 100644
--- a/drivers/net/bonding/bond_sysfs_slave.c
+++ b/drivers/net/bonding/bond_sysfs_slave.c
@@ -53,7 +53,7 @@ static SLAVE_ATTR_RO(perm_hwaddr);
static ssize_t queue_id_show(struct slave *slave, char *buf)
{
- return sysfs_emit(buf, "%d\n", slave->queue_id);
+ return sysfs_emit(buf, "%d\n", READ_ONCE(slave->queue_id));
}
static SLAVE_ATTR_RO(queue_id);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 07:52:46 +0000