[PATCH net-next v1 1/1] net: ks8851: use %*ph to print small buffer

[PATCH net-next v1 1/1] net: ks8851: use %*ph to print small buffer

[Andy Shevchenko]

Use %*ph format to print small buffer as hex string.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/ethernet/micrel/ks8851_common.c | 19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/micrel/ks8851_common.c b/drivers/net/ethernet/micrel/ks8851_common.c
index 7fa1820db9cc..a07ffc53da64 100644
--- a/drivers/net/ethernet/micrel/ks8851_common.c
+++ b/drivers/net/ethernet/micrel/ks8851_common.c
@@ -215,22 +215,6 @@ static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)
 	ks8851_write_mac_addr(dev);
 }
 
-/**
- * ks8851_dbg_dumpkkt - dump initial packet contents to debug
- * @ks: The device state
- * @rxpkt: The data for the received packet
- *
- * Dump the initial data from the packet to dev_dbg().
- */
-static void ks8851_dbg_dumpkkt(struct ks8851_net *ks, u8 *rxpkt)
-{
-	netdev_dbg(ks->netdev,
-		   "pkt %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
-		   rxpkt[4], rxpkt[5], rxpkt[6], rxpkt[7],
-		   rxpkt[8], rxpkt[9], rxpkt[10], rxpkt[11],
-		   rxpkt[12], rxpkt[13], rxpkt[14], rxpkt[15]);
-}
-
 /**
  * ks8851_rx_pkts - receive packets from the host
  * @ks: The device information.
@@ -296,8 +280,7 @@ static void ks8851_rx_pkts(struct ks8851_net *ks, struct sk_buff_head *rxq)
 
 				ks->rdfifo(ks, rxpkt, rxalign + 8);
 
-				if (netif_msg_pktdata(ks))
-					ks8851_dbg_dumpkkt(ks, rxpkt);
+				netif_dbg(ks, pktdata, ks->netdev, "pkt %12ph\n", &rxpkt[4]);
 
 				skb->protocol = eth_type_trans(skb, ks->netdev);
 				__skb_queue_tail(rxq, skb);
-- 
2.43.0.rc1.1336.g36b5255a03ac

Re: [PATCH net-next v1 1/1] net: ks8851: use %*ph to print small buffer

[Simon Horman]

On Wed, Sep 11, 2024 at 10:36:30PM +0300, Andy Shevchenko wrote:
> Use %*ph format to print small buffer as hex string.

Hi Andy,

Perhaps it would be worth mentioning that this patch
changes the output format such that there is a space
between each byte rather than each 32-bit word.

Or at least, that is what a local hack on my side indicated
things would look like :)

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/net/ethernet/micrel/ks8851_common.c | 19 +------------------
>  1 file changed, 1 insertion(+), 18 deletions(-)
> 
> diff --git a/drivers/net/ethernet/micrel/ks8851_common.c b/drivers/net/ethernet/micrel/ks8851_common.c
> index 7fa1820db9cc..a07ffc53da64 100644
> --- a/drivers/net/ethernet/micrel/ks8851_common.c
> +++ b/drivers/net/ethernet/micrel/ks8851_common.c
> @@ -215,22 +215,6 @@ static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)
>  	ks8851_write_mac_addr(dev);
>  }
>  
> -/**
> - * ks8851_dbg_dumpkkt - dump initial packet contents to debug
> - * @ks: The device state
> - * @rxpkt: The data for the received packet
> - *
> - * Dump the initial data from the packet to dev_dbg().
> - */
> -static void ks8851_dbg_dumpkkt(struct ks8851_net *ks, u8 *rxpkt)
> -{
> -	netdev_dbg(ks->netdev,
> -		   "pkt %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n",
> -		   rxpkt[4], rxpkt[5], rxpkt[6], rxpkt[7],
> -		   rxpkt[8], rxpkt[9], rxpkt[10], rxpkt[11],
> -		   rxpkt[12], rxpkt[13], rxpkt[14], rxpkt[15]);
> -}
> -
>  /**
>   * ks8851_rx_pkts - receive packets from the host
>   * @ks: The device information.
> @@ -296,8 +280,7 @@ static void ks8851_rx_pkts(struct ks8851_net *ks, struct sk_buff_head *rxq)
>  
>  				ks->rdfifo(ks, rxpkt, rxalign + 8);
>  
> -				if (netif_msg_pktdata(ks))
> -					ks8851_dbg_dumpkkt(ks, rxpkt);
> +				netif_dbg(ks, pktdata, ks->netdev, "pkt %12ph\n", &rxpkt[4]);

nit: I would have line wrapped this so it is <= 80 columns wide.

>  
>  				skb->protocol = eth_type_trans(skb, ks->netdev);
>  				__skb_queue_tail(rxq, skb);
> -- 
> 2.43.0.rc1.1336.g36b5255a03ac
> 
>