netdev - Re: [PATCH next v2 1/3] ethtool: Implement ethtool

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Date: Fri, 27 Oct 2023 01:02:48 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: Justin Stitt <justinstitt@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
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Subject: Re: [PATCH next v2 1/3] ethtool: Implement ethtool_puts()

Hi Justin,

On Thu, Oct 26, 2023 at 09:56:07PM +0000, Justin Stitt wrote:
> Use strscpy() to implement ethtool_puts().
> 
> Functionally the same as ethtool_sprintf() when it's used with two
> arguments or with just "%s" format specifier.
> 
> Signed-off-by: Justin Stitt <justinstitt@...gle.com>
> ---
>  include/linux/ethtool.h | 34 +++++++++++++++++++++++-----------
>  net/ethtool/ioctl.c     |  7 +++++++
>  2 files changed, 30 insertions(+), 11 deletions(-)
> 
> diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
> index 226a36ed5aa1..7129dd2e227c 100644
> --- a/include/linux/ethtool.h
> +++ b/include/linux/ethtool.h
> @@ -1053,22 +1053,34 @@ static inline int ethtool_mm_frag_size_min_to_add(u32 val_min, u32 *val_add,
>   */
>  extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
>  
> +/**
> + * ethtool_puts - Write string to ethtool string data
> + * @data: Pointer to start of string to update
> + * @str: String to write
> + *
> + * Write string to data. Update data to point at start of next
> + * string.
> + *
> + * Prefer this function to ethtool_sprintf() when given only
> + * two arguments or if @fmt is just "%s".
> + */
> +extern void ethtool_puts(u8 **data, const char *str);
> +
>  /* Link mode to forced speed capabilities maps */
>  struct ethtool_forced_speed_map {
> -	u32		speed;
> +	u32 speed;
>  	__ETHTOOL_DECLARE_LINK_MODE_MASK(caps);
>  
> -	const u32	*cap_arr;
> -	u32		arr_size;
> +	const u32 *cap_arr;
> +	u32 arr_size;
>  };
>  
> -#define ETHTOOL_FORCED_SPEED_MAP(prefix, value)				\
> -{									\
> -	.speed		= SPEED_##value,				\
> -	.cap_arr	= prefix##_##value,				\
> -	.arr_size	= ARRAY_SIZE(prefix##_##value),			\
> -}
> +#define ETHTOOL_FORCED_SPEED_MAP(prefix, value)                      \
> +	{                                                            \
> +		.speed = SPEED_##value, .cap_arr = prefix##_##value, \
> +		.arr_size = ARRAY_SIZE(prefix##_##value),            \
> +	}
>  
> -void
> -ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps, u32 size);
> +void ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps,
> +				    u32 size);
>  #endif /* _LINUX_ETHTOOL_H */

Maybe this is due to an incorrect rebase conflict resolution, but you
shouldn't have touched any of the ethtool force speed maps.

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