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ipv4: expose IPV4_DEVCONF 

IP sends device configuration (see inet_fill_link_af) as an array
in the netlink information, but the indices in that array are not
exposed to userspace through any current santized header file.

It was available back in 2.6.32 (in /usr/include/linux/sysctl.h)
but was broken by:
  commit 02291680ff
  Author: Eric W. Biederman <ebiederm@xmission.com>
  Date:   Sun Feb 14 03:25:51 2010 +0000

    net ipv4: Decouple ipv4 interface parameters from binary sysctl numbers

Eric was solving the sysctl problem but then the indices were re-exposed
by a later addition of devconf support for IPV4

  commit 9f0f7272ac
  Author: Thomas Graf <tgraf@infradead.org>
  Date:   Tue Nov 16 04:32:48 2010 +0000

    ipv4: AF_INET link address family

Putting them in /usr/include/linux/ip.h seemed the logical match
for the DEVCONF_ definitions for IPV6 in /usr/include/linux/ip6.h

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2013-08-21 21:09:47 -07:00 committed by David S. Miller
parent c92a59eca8
commit 4a5a8aa6c9
2 changed files with 35 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
include/linux/inetdevice.h
View File

@ -5,45 +5,13 @@
#include <linux/bitmap.h>
#include <linux/if.h>
#include <linux/ip.h>
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
#include <linux/timer.h>
#include <linux/sysctl.h>
#include <linux/rtnetlink.h>
enum
{
IPV4_DEVCONF_FORWARDING=1,
IPV4_DEVCONF_MC_FORWARDING,
IPV4_DEVCONF_PROXY_ARP,
IPV4_DEVCONF_ACCEPT_REDIRECTS,
IPV4_DEVCONF_SECURE_REDIRECTS,
IPV4_DEVCONF_SEND_REDIRECTS,
IPV4_DEVCONF_SHARED_MEDIA,
IPV4_DEVCONF_RP_FILTER,
IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
IPV4_DEVCONF_BOOTP_RELAY,
IPV4_DEVCONF_LOG_MARTIANS,
IPV4_DEVCONF_TAG,
IPV4_DEVCONF_ARPFILTER,
IPV4_DEVCONF_MEDIUM_ID,
IPV4_DEVCONF_NOXFRM,
IPV4_DEVCONF_NOPOLICY,
IPV4_DEVCONF_FORCE_IGMP_VERSION,
IPV4_DEVCONF_ARP_ANNOUNCE,
IPV4_DEVCONF_ARP_IGNORE,
IPV4_DEVCONF_PROMOTE_SECONDARIES,
IPV4_DEVCONF_ARP_ACCEPT,
IPV4_DEVCONF_ARP_NOTIFY,
IPV4_DEVCONF_ACCEPT_LOCAL,
IPV4_DEVCONF_SRC_VMARK,
IPV4_DEVCONF_PROXY_ARP_PVLAN,
IPV4_DEVCONF_ROUTE_LOCALNET,
__IPV4_DEVCONF_MAX
};
#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
struct ipv4_devconf {
void *sysctl;
int data[IPV4_DEVCONF_MAX];

34
include/uapi/linux/ip.h
View File

@ -133,4 +133,38 @@ struct ip_beet_phdr {
__u8 reserved;
};
/* index values for the variables in ipv4_devconf */
enum
{
IPV4_DEVCONF_FORWARDING=1,
IPV4_DEVCONF_MC_FORWARDING,
IPV4_DEVCONF_PROXY_ARP,
IPV4_DEVCONF_ACCEPT_REDIRECTS,
IPV4_DEVCONF_SECURE_REDIRECTS,
IPV4_DEVCONF_SEND_REDIRECTS,
IPV4_DEVCONF_SHARED_MEDIA,
IPV4_DEVCONF_RP_FILTER,
IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
IPV4_DEVCONF_BOOTP_RELAY,
IPV4_DEVCONF_LOG_MARTIANS,
IPV4_DEVCONF_TAG,
IPV4_DEVCONF_ARPFILTER,
IPV4_DEVCONF_MEDIUM_ID,
IPV4_DEVCONF_NOXFRM,
IPV4_DEVCONF_NOPOLICY,
IPV4_DEVCONF_FORCE_IGMP_VERSION,
IPV4_DEVCONF_ARP_ANNOUNCE,
IPV4_DEVCONF_ARP_IGNORE,
IPV4_DEVCONF_PROMOTE_SECONDARIES,
IPV4_DEVCONF_ARP_ACCEPT,
IPV4_DEVCONF_ARP_NOTIFY,
IPV4_DEVCONF_ACCEPT_LOCAL,
IPV4_DEVCONF_SRC_VMARK,
IPV4_DEVCONF_PROXY_ARP_PVLAN,
IPV4_DEVCONF_ROUTE_LOCALNET,
__IPV4_DEVCONF_MAX
};
#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
#endif /* _UAPI_LINUX_IP_H */