Re: [wpan-next v2 6/9] net: ieee802154: Use the IEEE802154_MAX_PAGE define when relevant

From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Stefan Schmidt <stefan@datenfreihafen.org>
Cc: Alexander Aring <alex.aring@gmail.com>,
	linux-wpan - ML <linux-wpan@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
	Xue Liu <liuxuenetmail@gmail.com>,
	Marcel Holtmann <marcel@holtmann.org>,
	Harry Morris <harrymorris12@gmail.com>,
	David Girault <david.girault@qorvo.com>,
	Romuald Despres <romuald.despres@qorvo.com>,
	Frederic Blain <frederic.blain@qorvo.com>,
	Nicolas Schodet <nico@ni.fr.eu.org>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [wpan-next v2 6/9] net: ieee802154: Use the IEEE802154_MAX_PAGE define when relevant
Date: Tue, 25 Jan 2022 12:10:41 +0100	[thread overview]
Message-ID: <20220125121041.391d60c3@xps13> (raw)
In-Reply-To: <7287b3d9-dbdd-c2c3-01c7-1f272749ebb9@datenfreihafen.org>

Hi Stefan,

stefan@datenfreihafen.org wrote on Mon, 24 Jan 2022 09:06:39 +0100:

> Hello.
> 
> On 23.01.22 21:44, Alexander Aring wrote:
> > Hi,
> > 
> > On Thu, 20 Jan 2022 at 06:21, Miquel Raynal <miquel.raynal@bootlin.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@bootlin.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.

As answered earlier, I will split the series so that it's clearer what
should go to wpan and what should go to wpan-next, no problem with that.

Thanks,
Miquèl