[Bridge] [PATCH net-next] bridge: use struct_size() helper

David Miller davem at davemloft.net
Sat Feb 9 06:57:44 UTC 2019


From: "Gustavo A. R. Silva" <gustavo at embeddedor.com>
Date: Thu, 7 Feb 2019 18:58:56 -0600

> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
> 
> struct foo {
>     int stuff;
>     struct boo entry[];
> };
> 
> size = sizeof(struct foo) + count * sizeof(struct boo);
> instance = alloc(size, GFP_KERNEL)
> 
> Instead of leaving these open-coded and prone to type mistakes, we can
> now use the new struct_size() helper:
> 
> size = struct_size(instance, entry, count);
> 
> This code was detected with the help of Coccinelle.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo at embeddedor.com>

Applied.


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