[dpdk-dev] [PATCH] usertools: check 0-division with hugepage size

[Stephen Hemminger]

On Thu, 11 Feb 2021 23:05:44 +0100
Thomas Monjalon <thomas at monjalon.net> wrote:

> The default page size can be None, and the page size from user request
> can be 0 kB if lower than 1024. In these cases, a division will fail.
> In order to avoid a Python exception, the page size is checked
> and an error message "Invalid page size" is printed.
> 
> A similar error message is printed in set_hugepages()
> if the size is not supported, except at this stage the message can be
> completed with "Valid page sizes".
> Unfortunately the first check is too early to print such information.
> 
> A third error message can be printed in a different place (get_memsize)
> in case of a format issue, e.g. a negative size.
> The function get_memsize() is also used for total requested size,
> so the error message "not a valid page size" was potentially wrong.
> This message is replaced with the more general "is not a valid size".
> 
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>

Acked-by: Stephen Hemminger <stephen at networkplumber.org>