IB/core: Change filter function return type from int to bool

Filter functions returns either 0 or 1, therefore better change their
return type from int to bool to reflect the same.  Additionally some
filter functions have suffix of _filter some doesn't.  Make all filter
function consistent to have __filter suffix to improve code readability.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

2 files changed, 43 insertions, 31 deletions

diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index fae417a391fb..77c7005c396c 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -91,8 +91,8 @@ void ib_device_unregister_sysfs(struct ib_device *device);
 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
               struct net_device *idev, void *cookie);
 
-typedef int (*roce_netdev_filter)(struct ib_device *device, u8 port,
-             struct net_device *idev, void *cookie);
+typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
+                                   struct net_device *idev, void *cookie);
 
 void ib_enum_roce_netdev(struct ib_device *ib_dev,
                          roce_netdev_filter filter,
diff --git a/drivers/infiniband/core/roce_gid_mgmt.c b/drivers/infiniband/core/roce_gid_mgmt.c
index 0d27af5ad951..ee366199b169 100644
--- a/drivers/infiniband/core/roce_gid_mgmt.c
+++ b/drivers/infiniband/core/roce_gid_mgmt.c
@@ -143,14 +143,15 @@ static enum bonding_slave_state is_eth_active_slave_of_bonding_rcu(struct net_de
 
 #define REQUIRED_BOND_STATES            (BONDING_SLAVE_STATE_ACTIVE |   \
                                          BONDING_SLAVE_STATE_NA)
-static int is_eth_port_of_netdev(struct ib_device *ib_dev, u8 port,
-                                 struct net_device *rdma_ndev, void *cookie)
+static bool
+is_eth_port_of_netdev_filter(struct ib_device *ib_dev, u8 port,
+                             struct net_device *rdma_ndev, void *cookie)
 {
         struct net_device *real_dev;
-        int res;
+        bool res;
 
         if (!rdma_ndev)
-                return 0;
+                return false;
 
         rcu_read_lock();
         real_dev = rdma_vlan_dev_real_dev(cookie);
@@ -166,14 +167,15 @@ static int is_eth_port_of_netdev(struct ib_device *ib_dev, u8 port,
         return res;
 }
 
-static int is_eth_port_inactive_slave(struct ib_device *ib_dev, u8 port,
-                                      struct net_device *rdma_ndev, void *cookie)
+static bool
+is_eth_port_inactive_slave_filter(struct ib_device *ib_dev, u8 port,
+                                  struct net_device *rdma_ndev, void *cookie)
 {
         struct net_device *master_dev;
-        int res;
+        bool res;
 
         if (!rdma_ndev)
-                return 0;
+                return false;
 
         rcu_read_lock();
         master_dev = netdev_master_upper_dev_get_rcu(rdma_ndev);
@@ -191,18 +193,18 @@ static int is_eth_port_inactive_slave(struct ib_device *ib_dev, u8 port,
  * @rdma_ndev:          rdma netdevice pointer
  * @cookie_ndev:        Netdevice to consider to form a default GID
  *
- * is_ndev_for_default_gid_filter() returns true (1) if a given netdevice can be
- * considered for deriving default RoCE GID, returns false (0) otherwise.
+ * is_ndev_for_default_gid_filter() returns true if a given netdevice can be
+ * considered for deriving default RoCE GID, returns false otherwise.
  */
-static int
+static bool
 is_ndev_for_default_gid_filter(struct ib_device *ib_dev, u8 port,
                                struct net_device *rdma_ndev, void *cookie)
 {
         struct net_device *cookie_ndev = cookie;
-        int res;
+        bool res;
 
         if (!rdma_ndev)
-                return 0;
+                return false;
 
         rcu_read_lock();
 
@@ -221,22 +223,22 @@ is_ndev_for_default_gid_filter(struct ib_device *ib_dev, u8 port,
         return res;
 }
 
-static int pass_all_filter(struct ib_device *ib_dev, u8 port,
-                           struct net_device *rdma_ndev, void *cookie)
+static bool pass_all_filter(struct ib_device *ib_dev, u8 port,
+                            struct net_device *rdma_ndev, void *cookie)
 {
-        return 1;
+        return true;
 }
 
-static int upper_device_filter(struct ib_device *ib_dev, u8 port,
-                               struct net_device *rdma_ndev, void *cookie)
+static bool upper_device_filter(struct ib_device *ib_dev, u8 port,
+                                struct net_device *rdma_ndev, void *cookie)
 {
-        int res;
+        bool res;
 
         if (!rdma_ndev)
-                return 0;
+                return false;
 
         if (rdma_ndev == cookie)
-                return 1;
+                return true;
 
         rcu_read_lock();
         res = rdma_is_upper_dev_rcu(rdma_ndev, cookie);
@@ -257,7 +259,7 @@ static int upper_device_filter(struct ib_device *ib_dev, u8 port,
  * is bond master device and rdma_ndev is its lower netdevice. It might
  * not have been established as slave device yet.
  */
-static int
+static bool
 is_upper_ndev_bond_master_filter(struct ib_device *ib_dev, u8 port,
                                  struct net_device *rdma_ndev,
                                  void *cookie)
@@ -487,7 +489,8 @@ static void enum_all_gids_of_dev_cb(struct ib_device *ib_dev,
                                                            rdma_ndev, ndev))
                                 add_default_gids(ib_dev, port, rdma_ndev, ndev);
 
-                        if (is_eth_port_of_netdev(ib_dev, port, rdma_ndev, ndev))
+                        if (is_eth_port_of_netdev_filter(ib_dev, port,
+                                                         rdma_ndev, ndev))
                                 _add_netdev_ips(ib_dev, port, ndev);
                 }
         up_read(&net_rwsem);
@@ -651,9 +654,14 @@ static int netdevice_queue_work(struct netdev_event_work_cmd *cmds,
 }
 
 static const struct netdev_event_work_cmd add_cmd = {
-        .cb = add_netdev_ips, .filter = is_eth_port_of_netdev};
+        .cb     = add_netdev_ips,
+        .filter = is_eth_port_of_netdev_filter
+};
+
 static const struct netdev_event_work_cmd add_cmd_upper_ips = {
-        .cb = add_netdev_upper_ips, .filter = is_eth_port_of_netdev};
+        .cb     = add_netdev_upper_ips,
+        .filter = is_eth_port_of_netdev_filter
+};
 
 static void
 ndev_event_unlink(struct netdev_notifier_changeupper_info *changeupper_info,
@@ -724,12 +732,15 @@ static int netdevice_event(struct notifier_block *this, unsigned long event,
 {
         static const struct netdev_event_work_cmd del_cmd = {
                 .cb = del_netdev_ips, .filter = pass_all_filter};
-        static const struct netdev_event_work_cmd bonding_default_del_cmd_join = {
-                .cb = del_netdev_default_ips_join, .filter = is_eth_port_inactive_slave};
+        static const struct netdev_event_work_cmd
+                        bonding_default_del_cmd_join = {
+                                .cb     = del_netdev_default_ips_join,
+                                .filter = is_eth_port_inactive_slave_filter
+                        };
         static const struct netdev_event_work_cmd
                         netdev_del_cmd = {
                                 .cb     = del_netdev_ips,
-                                .filter = is_eth_port_of_netdev
+                                .filter = is_eth_port_of_netdev_filter
                         };