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Date:   Wed, 19 Sep 2018 19:20:15 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>, <shannon.nelson@...cle.com>,
        <alexander.h.duyck@...el.com>, <yanjun.zhu@...cle.com>,
        <jeffrey.t.kirsher@...el.com>, <tklauser@...tanz.ch>
CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
Subject: Re: [PATCH 6/6] net: sun: fix return type of ndo_start_xmit function

Sorry for wrongly title, will repost.

On 2018/9/19 19:07, YueHaibing wrote:
> The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
> which is a typedef for an enum type, but the implementation in this
> driver returns an 'int'.
> 
> Found by coccinelle.
> 
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  drivers/net/ethernet/sun/ldmvsw.c         |  2 +-
>  drivers/net/ethernet/sun/sunbmac.c        |  3 ++-
>  drivers/net/ethernet/sun/sunqe.c          |  2 +-
>  drivers/net/ethernet/sun/sunvnet.c        |  2 +-
>  drivers/net/ethernet/sun/sunvnet_common.c | 14 ++++++++------
>  drivers/net/ethernet/sun/sunvnet_common.h |  7 ++++---
>  6 files changed, 17 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/net/ethernet/sun/ldmvsw.c b/drivers/net/ethernet/sun/ldmvsw.c
> index d42f47f..644e42c 100644
> --- a/drivers/net/ethernet/sun/ldmvsw.c
> +++ b/drivers/net/ethernet/sun/ldmvsw.c
> @@ -113,7 +113,7 @@ static u16 vsw_select_queue(struct net_device *dev, struct sk_buff *skb,
>  }
>  
>  /* Wrappers to common functions */
> -static int vsw_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t vsw_start_xmit(struct sk_buff *skb, struct net_device *dev)
>  {
>  	return sunvnet_start_xmit_common(skb, dev, vsw_tx_port_find);
>  }
> diff --git a/drivers/net/ethernet/sun/sunbmac.c b/drivers/net/ethernet/sun/sunbmac.c
> index f047b27..720b7ac 100644
> --- a/drivers/net/ethernet/sun/sunbmac.c
> +++ b/drivers/net/ethernet/sun/sunbmac.c
> @@ -950,7 +950,8 @@ static void bigmac_tx_timeout(struct net_device *dev)
>  }
>  
>  /* Put a packet on the wire. */
> -static int bigmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t
> +bigmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
>  {
>  	struct bigmac *bp = netdev_priv(dev);
>  	int len, entry;
> diff --git a/drivers/net/ethernet/sun/sunqe.c b/drivers/net/ethernet/sun/sunqe.c
> index 7fe0d5e..1468fa0 100644
> --- a/drivers/net/ethernet/sun/sunqe.c
> +++ b/drivers/net/ethernet/sun/sunqe.c
> @@ -570,7 +570,7 @@ static void qe_tx_timeout(struct net_device *dev)
>  }
>  
>  /* Get a packet queued to go onto the wire. */
> -static int qe_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t qe_start_xmit(struct sk_buff *skb, struct net_device *dev)
>  {
>  	struct sunqe *qep = netdev_priv(dev);
>  	struct sunqe_buffers *qbufs = qep->buffers;
> diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
> index 12539b3..5901728 100644
> --- a/drivers/net/ethernet/sun/sunvnet.c
> +++ b/drivers/net/ethernet/sun/sunvnet.c
> @@ -247,7 +247,7 @@ static u16 vnet_select_queue(struct net_device *dev, struct sk_buff *skb,
>  }
>  
>  /* Wrappers to common functions */
> -static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t vnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
>  {
>  	return sunvnet_start_xmit_common(skb, dev, vnet_tx_port_find);
>  }
> diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c
> index d8f4c3f..baa3088 100644
> --- a/drivers/net/ethernet/sun/sunvnet_common.c
> +++ b/drivers/net/ethernet/sun/sunvnet_common.c
> @@ -1216,9 +1216,10 @@ static inline struct sk_buff *vnet_skb_shape(struct sk_buff *skb, int ncookies)
>  	return skb;
>  }
>  
> -static int vnet_handle_offloads(struct vnet_port *port, struct sk_buff *skb,
> -				struct vnet_port *(*vnet_tx_port)
> -				(struct sk_buff *, struct net_device *))
> +static netdev_tx_t
> +vnet_handle_offloads(struct vnet_port *port, struct sk_buff *skb,
> +		     struct vnet_port *(*vnet_tx_port)
> +		     (struct sk_buff *, struct net_device *))
>  {
>  	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
>  	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];
> @@ -1321,9 +1322,10 @@ static int vnet_handle_offloads(struct vnet_port *port, struct sk_buff *skb,
>  	return NETDEV_TX_OK;
>  }
>  
> -int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
> -			      struct vnet_port *(*vnet_tx_port)
> -			      (struct sk_buff *, struct net_device *))
> +netdev_tx_t
> +sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
> +			  struct vnet_port *(*vnet_tx_port)
> +			  (struct sk_buff *, struct net_device *))
>  {
>  	struct vnet_port *port = NULL;
>  	struct vio_dring_state *dr;
> diff --git a/drivers/net/ethernet/sun/sunvnet_common.h b/drivers/net/ethernet/sun/sunvnet_common.h
> index 1ea0b01..2b808d2 100644
> --- a/drivers/net/ethernet/sun/sunvnet_common.h
> +++ b/drivers/net/ethernet/sun/sunvnet_common.h
> @@ -136,9 +136,10 @@ struct vnet {
>  void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp);
>  int sunvnet_set_mac_addr_common(struct net_device *dev, void *p);
>  void sunvnet_tx_timeout_common(struct net_device *dev);
> -int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
> -			   struct vnet_port *(*vnet_tx_port)
> -			   (struct sk_buff *, struct net_device *));
> +netdev_tx_t
> +sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
> +			  struct vnet_port *(*vnet_tx_port)
> +			  (struct sk_buff *, struct net_device *));
>  #ifdef CONFIG_NET_POLL_CONTROLLER
>  void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp);
>  #endif
> 

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