netdev - Re: [wpan-next v2 6/9] net: ieee802154: Use the IEEE802154_MAX

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Message-ID: <7287b3d9-dbdd-c2c3-01c7-1f272749ebb9@datenfreihafen.org>
Date:   Mon, 24 Jan 2022 09:06:39 +0100
From:   Stefan Schmidt <stefan@...enfreihafen.org>
To:     Alexander Aring <alex.aring@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     linux-wpan - ML <linux-wpan@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        Xue Liu <liuxuenetmail@...il.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Harry Morris <harrymorris12@...il.com>,
        David Girault <david.girault@...vo.com>,
        Romuald Despres <romuald.despres@...vo.com>,
        Frederic Blain <frederic.blain@...vo.com>,
        Nicolas Schodet <nico@...fr.eu.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [wpan-next v2 6/9] net: ieee802154: Use the IEEE802154_MAX_PAGE
 define when relevant

Hello.

On 23.01.22 21:44, Alexander Aring wrote:
> Hi,
> 
> On Thu, 20 Jan 2022 at 06:21, Miquel Raynal <miquel.raynal@...tlin.com> wrote:
>>
>> This define already exist but is hardcoded in nl-phy.c. Use the
>> definition when relevant.
>>
>> Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
>> ---
>>   net/ieee802154/nl-phy.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c
>> index dd5a45f8a78a..02f6a53d0faa 100644
>> --- a/net/ieee802154/nl-phy.c
>> +++ b/net/ieee802154/nl-phy.c
>> @@ -30,7 +30,8 @@ static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
>>   {
>>          void *hdr;
>>          int i, pages = 0;
>> -       uint32_t *buf = kcalloc(32, sizeof(uint32_t), GFP_KERNEL);
>> +       uint32_t *buf = kcalloc(IEEE802154_MAX_PAGE + 1, sizeof(uint32_t),
>> +                               GFP_KERNEL);
>>
>>          pr_debug("%s\n", __func__);
>>
>> @@ -47,7 +48,7 @@ static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
>>              nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) ||
>>              nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel))
>>                  goto nla_put_failure;
>> -       for (i = 0; i < 32; i++) {
>> +       for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
>>                  if (phy->supported.channels[i])
>>                          buf[pages++] = phy->supported.channels[i] | (i << 27);
>>          }
> 
> Where is the fix here?

While its more cleanup than fix, its clear and easy and there is no 
problem for it to go into wpan instead of wpan-next.

regards
Stefan Schmidt