2018-10-09 14:28:34

by Håkon Bugge

[permalink] [raw]
Subject: [PATCH v2 0/2] net: if_arp: use define instead of hard-coded value

Struct arpreq contains the name of the device. All other places in the
kernel, the define IFNAMSIZ is used to designate its size. But in
if_arp.h, a literal constant is used.

Fixed by explicitly including uapi/linu/if.h, where IFNAMSIZ is defined.

The series also fixes some incorrect indents.


v1 -> v2:
* Include uapi/linux/if.h from if_arp.h
* Added Stephen's t-b

Håkon Bugge (2):
net: if_arp: Fix incorrect indents
net: if_arp: use define instead of hard-coded value

include/uapi/linux/if_arp.h | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

--
2.14.3



From a36b99413ea5beca1539f4faf065f33c7c19e6a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A5kon=20Bugge?= <[email protected]>
Date: Fri, 21 Sep 2018 11:28:36 +0200
Subject: [PATCH 0/2]
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Struct arpreq contains the name of the device. All other places in the
kernel, the define IFNAMSIZ is used to designate its size. But in
if_arp.h, a literal constant is used.

As it could be good reasons to use constants instead of the defines in
include files under uapi, it seems to be OK to use the define here,
without opening a can of worms in user-land.

This because if_arp.h includes netdevice.h, which also uses
IFNAMSIZ. For the distros I have checked, this also holds true for the
use-land side.

The series also fixes some incorrect indents.

Håkon Bugge (2):
net: if_arp: Fix incorrect indents
net: if_arp: use define instead of hard-coded value

include/uapi/linux/if_arp.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

--
2.14.3



2018-10-09 14:28:44

by Håkon Bugge

[permalink] [raw]
Subject: [PATCH v2 2/2] net: if_arp: use define instead of hard-coded value

Let uapi/linux/if_arp.h include uapi/linux/if.h, where IFNAMSIZ is
defined. Then, use it in this file instead of hard-coded value.

This way, we are using an uapi defined constant, and as such,
user-space should be good.

Signed-off-by: Håkon Bugge <[email protected]>
Tested-by: Stephen Hemminger <[email protected]>

---

v1 -> v2:
* Include uapi/linux/if.h
* Add Stephen's t-b
---
include/uapi/linux/if_arp.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_arp.h b/include/uapi/linux/if_arp.h
index b68b4b3d9172..f5d2dab3f610 100644
--- a/include/uapi/linux/if_arp.h
+++ b/include/uapi/linux/if_arp.h
@@ -24,6 +24,7 @@
#ifndef _UAPI_LINUX_IF_ARP_H
#define _UAPI_LINUX_IF_ARP_H

+#include <linux/if.h>
#include <linux/netdevice.h>

/* ARP protocol HARDWARE identifiers. */
@@ -118,7 +119,7 @@ struct arpreq {
struct sockaddr arp_ha; /* hardware address */
int arp_flags; /* flags */
struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
- char arp_dev[16];
+ char arp_dev[IFNAMSIZ];
};

struct arpreq_old {
--
2.14.3


2018-10-09 14:29:08

by Håkon Bugge

[permalink] [raw]
Subject: [PATCH v2 1/2] net: if_arp: Fix incorrect indents

Fixing incorrect indents and align comments.

Signed-off-by: Håkon Bugge <[email protected]>
---
include/uapi/linux/if_arp.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/uapi/linux/if_arp.h b/include/uapi/linux/if_arp.h
index 4605527ca41b..b68b4b3d9172 100644
--- a/include/uapi/linux/if_arp.h
+++ b/include/uapi/linux/if_arp.h
@@ -114,18 +114,18 @@

/* ARP ioctl request. */
struct arpreq {
- struct sockaddr arp_pa; /* protocol address */
- struct sockaddr arp_ha; /* hardware address */
- int arp_flags; /* flags */
- struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
- char arp_dev[16];
+ struct sockaddr arp_pa; /* protocol address */
+ struct sockaddr arp_ha; /* hardware address */
+ int arp_flags; /* flags */
+ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
+ char arp_dev[16];
};

struct arpreq_old {
- struct sockaddr arp_pa; /* protocol address */
- struct sockaddr arp_ha; /* hardware address */
- int arp_flags; /* flags */
- struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
+ struct sockaddr arp_pa; /* protocol address */
+ struct sockaddr arp_ha; /* hardware address */
+ int arp_flags; /* flags */
+ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
};

/* ARP Flag values. */
--
2.14.3


2018-10-23 12:31:58

by Håkon Bugge

[permalink] [raw]
Subject: Re: [v2,0/2] net: if_arp: use define instead of hard-coded value



> On 9 Oct 2018, at 16:27, Håkon Bugge <[email protected]> wrote:
>
> Struct arpreq contains the name of the device. All other places in the
> kernel, the define IFNAMSIZ is used to designate its size. But in
> if_arp.h, a literal constant is used.
>
> Fixed by explicitly including uapi/linu/if.h, where IFNAMSIZ is defined.
>
> The series also fixes some incorrect indents.
>
>
> v1 -> v2:
> * Include uapi/linux/if.h from if_arp.h
> * Added Stephen's t-b
>
> Håkon Bugge (2):
> net: if_arp: Fix incorrect indents
> net: if_arp: use define instead of hard-coded value
>
> include/uapi/linux/if_arp.h | 19 ++++++++++---------
> 1 file changed, 10 insertions(+), 9 deletions(-)
> ---
> 2.14.3

Just a friendly reminder.


Thxs, Håkon


>
>
> From a36b99413ea5beca1539f4faf065f33c7c19e6a5 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?H=C3=A5kon=20Bugge?= <[email protected]>
> Date: Fri, 21 Sep 2018 11:28:36 +0200
> Subject: [PATCH 0/2]
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
>
> Struct arpreq contains the name of the device. All other places in the
> kernel, the define IFNAMSIZ is used to designate its size. But in
> if_arp.h, a literal constant is used.
>
> As it could be good reasons to use constants instead of the defines in
> include files under uapi, it seems to be OK to use the define here,
> without opening a can of worms in user-land.
>
> This because if_arp.h includes netdevice.h, which also uses
> IFNAMSIZ. For the distros I have checked, this also holds true for the
> use-land side.
>
> The series also fixes some incorrect indents.
>
> Håkon Bugge (2):
> net: if_arp: Fix incorrect indents
> net: if_arp: use define instead of hard-coded value
>
> include/uapi/linux/if_arp.h | 18 +++++++++---------
> 1 file changed, 9 insertions(+), 9 deletions(-)
>
> --
> 2.14.3


2018-10-23 16:32:49

by Håkon Bugge

[permalink] [raw]
Subject: Re: [v2,0/2] net: if_arp: use define instead of hard-coded value



> On 23 Oct 2018, at 18:11, David Miller <[email protected]> wrote:
>
> From: Håkon Bugge <[email protected]>
> Date: Tue, 23 Oct 2018 14:30:57 +0200
>
>> Just a friendly reminder.
>
> Reminder for what?
>
> Your patch was applied to the net-next tree right after it was posted,
> what more do you want?

Oh, my bad then. Was expecting review comments or an "Applied, thanks". Will check the respective tree next time. No need for the v2 then I assume.


Thxs, Håkon


2018-10-23 17:04:36

by David Miller

[permalink] [raw]
Subject: Re: [v2,0/2] net: if_arp: use define instead of hard-coded value

From: H?kon Bugge <[email protected]>
Date: Tue, 23 Oct 2018 14:30:57 +0200

> Just a friendly reminder.

Reminder for what?

Your patch was applied to the net-next tree right after it was posted,
what more do you want?

I gather that you have no idea what tree was appropriate for your change
and therefore where your should check to see if it was applied or not.