linux-kernel - Re: [PATCH 6/8] net: qualcomm: rmnet: get rid of a variable in rmnet_map_ipv4_ul_csum

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Date:   Mon, 20 May 2019 10:17:39 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Alex Elder <elder@...aro.org>
Cc:     arnd@...db.de, subashab@...eaurora.org, david.brown@...aro.org,
        agross@...nel.org, davem@...emloft.net,
        ilias.apalodimas@...aro.org, cpratapa@...eaurora.org,
        syadagir@...eaurora.org, evgreen@...omium.org, benchan@...gle.com,
        ejcaruso@...gle.com, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] net: qualcomm: rmnet: get rid of a variable in
 rmnet_map_ipv4_ul_csum_header()

On Mon 20 May 06:53 PDT 2019, Alex Elder wrote:

> The value passed as an argument to rmnet_map_ipv4_ul_csum_header()
> is always an IPv4 header.  Just have the type of the argument
> reflect that rather than obscuring that with a void pointer.  Rename
> it to be consistent with rmnet_map_ipv6_ul_csum_header().
> 
> Signed-off-by: Alex Elder <elder@...aro.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> ---
>  drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
> index a95111cdcd29..61b7dbab2056 100644
> --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
> +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
> @@ -203,26 +203,25 @@ static void rmnet_map_complement_ipv4_txporthdr_csum_field(void *iphdr)
>  }
>  
>  static void
> -rmnet_map_ipv4_ul_csum_header(void *iphdr,
> +rmnet_map_ipv4_ul_csum_header(struct iphdr *ip4hdr,
>  			      struct rmnet_map_ul_csum_header *ul_header,
>  			      struct sk_buff *skb)
>  {
> -	struct iphdr *ip4h = iphdr;
>  	u16 offset;
>  	u16 val;
>  
> -	offset = skb_transport_header(skb) - (unsigned char *)iphdr;
> +	offset = skb_transport_header(skb) - (unsigned char *)ip4hdr;
>  	ul_header->csum_start_offset = htons(offset);
>  
>  	val = u16_encode_bits(skb->csum_offset, RMNET_MAP_UL_CSUM_INSERT_FMASK);
>  	val |= RMNET_MAP_UL_CSUM_ENABLED_FMASK;
> -	if (ip4h->protocol == IPPROTO_UDP)
> +	if (ip4hdr->protocol == IPPROTO_UDP)
>  		val |= RMNET_MAP_UL_CSUM_UDP_FMASK;
>  	ul_header->csum_info = htons(val);
>  
>  	skb->ip_summed = CHECKSUM_NONE;
>  
> -	rmnet_map_complement_ipv4_txporthdr_csum_field(iphdr);
> +	rmnet_map_complement_ipv4_txporthdr_csum_field(ip4hdr);
>  }
>  
>  #if IS_ENABLED(CONFIG_IPV6)
> -- 
> 2.20.1
>