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net ipv4: Decouple ipv4 interface parameters from binary sysctl numbers

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Stop using the binary sysctl enumeartion in sysctl.h as an index into
a per interface array.  This leads to unnecessary binary sysctl number
allocation, and a fragility in data structure and implementation
because of unnecessary coupling.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
2010-02-14 03:25:51 +00:00
committed by David S. Miller
parent 9e3f8063a7
commit 02291680ff
3 changed files with 49 additions and 23 deletions
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26
net/ipv4/devinet.c
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@@ -64,20 +64,20 @@
static struct ipv4_devconf ipv4_devconf = {
.data = {
[NET_IPV4_CONF_ACCEPT_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SEND_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SECURE_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SHARED_MEDIA - 1] = 1,
[IPV4_DEVCONF_ACCEPT_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SEND_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SECURE_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SHARED_MEDIA - 1] = 1,
},
};
static struct ipv4_devconf ipv4_devconf_dflt = {
.data = {
[NET_IPV4_CONF_ACCEPT_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SEND_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SECURE_REDIRECTS - 1] = 1,
[NET_IPV4_CONF_SHARED_MEDIA - 1] = 1,
[NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE - 1] = 1,
[IPV4_DEVCONF_ACCEPT_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SEND_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SECURE_REDIRECTS - 1] = 1,
[IPV4_DEVCONF_SHARED_MEDIA - 1] = 1,
[IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE - 1] = 1,
},
};
@@ -1360,7 +1360,7 @@ int ipv4_doint_and_flush(ctl_table *ctl, int write,
{ \
.procname = name, \
.data = ipv4_devconf.data + \
NET_IPV4_CONF_ ## attr - 1, \
IPV4_DEVCONF_ ## attr - 1, \
.maxlen = sizeof(int), \
.mode = mval, \
.proc_handler = proc, \
@@ -1381,7 +1381,7 @@ int ipv4_doint_and_flush(ctl_table *ctl, int write,
static struct devinet_sysctl_table {
struct ctl_table_header *sysctl_header;
struct ctl_table devinet_vars[__NET_IPV4_CONF_MAX];
struct ctl_table devinet_vars[__IPV4_DEVCONF_MAX];
char *dev_name;
} devinet_sysctl = {
.devinet_vars = {
@@ -1503,7 +1503,7 @@ static struct ctl_table ctl_forward_entry[] = {
{
.procname = "ip_forward",
.data = &ipv4_devconf.data[
NET_IPV4_CONF_FORWARDING - 1],
IPV4_DEVCONF_FORWARDING - 1],
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = devinet_sysctl_forward,
@@ -1547,7 +1547,7 @@ static __net_init int devinet_init_net(struct net *net)
if (tbl == NULL)
goto err_alloc_ctl;
tbl[0].data = &all->data[NET_IPV4_CONF_FORWARDING - 1];
tbl[0].data = &all->data[IPV4_DEVCONF_FORWARDING - 1];
tbl[0].extra1 = all;
tbl[0].extra2 = net;
#endif