Re: [PATCH 2/2][next] wifi: brcmfmac: Use struct_size() in code ralated to struct brcmf_dload_data_le

[Gustavo A. R. Silva]

On 11/16/22 16:23, Kees Cook wrote:
> On Tue, Nov 15, 2022 at 03:55:34PM -0600, Gustavo A. R. Silva wrote:
> > Prefer struct_size() over open-coded versions of idiom:
> >
> > sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count
> >
> > where count is the max number of items the flexible array is supposed to
> > contain.
> >
> > In this particular case, in the open-coded version sizeof(typeof-flex-array-elements)
> > is implicit in _count_ because the type of the flex array data is u8:
> >
> > drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h:941:
> >   941 struct brcmf_dload_data_le {
> >   942         __le16 flag;
> >   943         __le16 dload_type;
> >   944         __le32 len;
> >   945         __le32 crc;
> >   946         u8 data[];
> >   947 };
> >
> > Link: https://github.com/KSPP/linux/issues/160
> > Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
>
> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

Thanks for the reviews! :)

--
Gustavo