linux-kernel - Re: [PATCH v5 2/3] staging: r8188eu: incorrect type in csum_ipv6

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Message-ID: <20210828113726.v4tmknjosvgb7bke@kari-VirtualBox>
Date:   Sat, 28 Aug 2021 14:37:26 +0300
From:   Kari Argillander <kari.argillander@...il.com>
To:     Aakash Hemadri <aakashhemadri123@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/3] staging: r8188eu: incorrect type in
 csum_ipv6_magic

[PATCH v5 2/3] staging: r8188eu: incorrect type in csum_ipv6_magic

Subject should start with imperative mood. Every patch in this series
needs this fix.

I actually check linux coding style and did not found mention about
this, but if you look kernel log then you see that it is at least
unwritten rule. You can check this if you want
https://chris.beams.io/posts/git-commit/#imperative

On Sat, Aug 28, 2021 at 04:40:45PM +0530, Aakash Hemadri wrote:
> Fix sparse warning:
> > rtw_br_ext.c:771:84:    got restricted __be16 [usertype] payload_len
> > rtw_br_ext.c:773:110: warning: incorrect type in argument 2
>     (different base types)
> > rtw_br_ext.c:773:110:    expected int len
> > rtw_br_ext.c:773:110:    got restricted __be16 [usertype] payload_len
> 
> csum_ipv6_magic and csum_partial expect int len not __be16, use
> be16_to_cpu()
> 
> Signed-off-by: Aakash Hemadri <aakashhemadri123@...il.com>
> ---
>  drivers/staging/r8188eu/core/rtw_br_ext.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/core/rtw_br_ext.c b/drivers/staging/r8188eu/core/rtw_br_ext.c
> index aa56cd1a8490..38f1bd591da9 100644
> --- a/drivers/staging/r8188eu/core/rtw_br_ext.c
> +++ b/drivers/staging/r8188eu/core/rtw_br_ext.c
> @@ -615,9 +615,9 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
>  						struct icmp6hdr  *hdr = (struct icmp6hdr *)(skb->data + ETH_HLEN + sizeof(*iph));
>  						hdr->icmp6_cksum = 0;
>  						hdr->icmp6_cksum = csum_ipv6_magic(&iph->saddr, &iph->daddr,
> -										iph->payload_len,
> +										be16_to_cpu(iph->payload_len),
>  										IPPROTO_ICMPV6,
> -										csum_partial((__u8 *)hdr, iph->payload_len, 0));
> +										csum_partial((__u8 *)hdr, be16_to_cpu(iph->payload_len), 0));
>  					}
>  				}
>  			}
> -- 
> 2.32.0
>