Re: [PATCH rdma-next V1] IB/core: Remove pointer casting from void to net_device

[Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>]

On Thu, Feb 02, 2017 at 07:14:08AM +0200, Leon Romanovsky wrote:
> From: Parav Pandit <parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> 
> This patch avoids unnecessary type casting from void to net_device.
> 
> CC: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Parav Pandit <parav-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Signed-off-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> ---
> Changelog v0->v1:
>  * Removed temporary event_ndev variable as was suggested by Yuval Shaia.
> ---
>  drivers/infiniband/core/roce_gid_mgmt.c | 28 ++++++++++------------------
>  1 file changed, 10 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/infiniband/core/roce_gid_mgmt.c b/drivers/infiniband/core/roce_gid_mgmt.c
> index 0621f4455732..db958d3207ef 100644
> --- a/drivers/infiniband/core/roce_gid_mgmt.c
> +++ b/drivers/infiniband/core/roce_gid_mgmt.c
> @@ -144,7 +144,6 @@ static enum bonding_slave_state is_eth_active_slave_of_bonding_rcu(struct net_de
>  static int is_eth_port_of_netdev(struct ib_device *ib_dev, u8 port,
>  				 struct net_device *rdma_ndev, void *cookie)
>  {
> -	struct net_device *event_ndev = (struct net_device *)cookie;
>  	struct net_device *real_dev;
>  	int res;
> 
> @@ -152,11 +151,11 @@ static int is_eth_port_of_netdev(struct ib_device *ib_dev, u8 port,
>  		return 0;
> 
>  	rcu_read_lock();
> -	real_dev = rdma_vlan_dev_real_dev(event_ndev);
> +	real_dev = rdma_vlan_dev_real_dev(cookie);
>  	if (!real_dev)
> -		real_dev = event_ndev;
> +		real_dev = cookie;
> 
> -	res = ((rdma_is_upper_dev_rcu(rdma_ndev, event_ndev) &&
> +	res = ((rdma_is_upper_dev_rcu(rdma_ndev, cookie) &&
>  	       (is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev) &
>  		REQUIRED_BOND_STATES)) ||
>  	       real_dev == rdma_ndev);
> @@ -192,17 +191,16 @@ static int pass_all_filter(struct ib_device *ib_dev, u8 port,
>  static int upper_device_filter(struct ib_device *ib_dev, u8 port,
>  			       struct net_device *rdma_ndev, void *cookie)
>  {
> -	struct net_device *event_ndev = (struct net_device *)cookie;
>  	int res;
> 
>  	if (!rdma_ndev)
>  		return 0;
> 
> -	if (rdma_ndev == event_ndev)
> +	if (rdma_ndev == cookie)
>  		return 1;
> 
>  	rcu_read_lock();
> -	res = rdma_is_upper_dev_rcu(rdma_ndev, event_ndev);
> +	res = rdma_is_upper_dev_rcu(rdma_ndev, cookie);
>  	rcu_read_unlock();
> 
>  	return res;
> @@ -379,18 +377,14 @@ static void _add_netdev_ips(struct ib_device *ib_dev, u8 port,
>  static void add_netdev_ips(struct ib_device *ib_dev, u8 port,
>  			   struct net_device *rdma_ndev, void *cookie)
>  {
> -	struct net_device *event_ndev = (struct net_device *)cookie;
> -
> -	enum_netdev_default_gids(ib_dev, port, event_ndev, rdma_ndev);
> -	_add_netdev_ips(ib_dev, port, event_ndev);
> +	enum_netdev_default_gids(ib_dev, port, cookie, rdma_ndev);
> +	_add_netdev_ips(ib_dev, port, cookie);
>  }
> 
>  static void del_netdev_ips(struct ib_device *ib_dev, u8 port,
>  			   struct net_device *rdma_ndev, void *cookie)
>  {
> -	struct net_device *event_ndev = (struct net_device *)cookie;
> -
> -	ib_cache_gid_del_all_netdev_gids(ib_dev, port, event_ndev);
> +	ib_cache_gid_del_all_netdev_gids(ib_dev, port, cookie);
>  }
> 
>  static void enum_all_gids_of_dev_cb(struct ib_device *ib_dev,
> @@ -460,7 +454,7 @@ static void handle_netdev_upper(struct ib_device *ib_dev, u8 port,
>  						      u8 port,
>  						      struct net_device *ndev))
>  {
> -	struct net_device *ndev = (struct net_device *)cookie;
> +	struct net_device *ndev = cookie;
>  	struct upper_list *upper_iter;
>  	struct upper_list *upper_temp;
>  	LIST_HEAD(upper_list);
> @@ -519,9 +513,7 @@ static void del_netdev_default_ips_join(struct ib_device *ib_dev, u8 port,
>  static void del_netdev_default_ips(struct ib_device *ib_dev, u8 port,
>  				   struct net_device *rdma_ndev, void *cookie)
>  {
> -	struct net_device *event_ndev = (struct net_device *)cookie;
> -
> -	bond_delete_netdev_default_gids(ib_dev, port, event_ndev, rdma_ndev);
> +	bond_delete_netdev_default_gids(ib_dev, port, cookie, rdma_ndev);

Reviewed-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

>  }
> 
>  /* The following functions operate on all IB devices. netdevice_event and
> --
> 2.11.0
> 
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