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Subject[PATCH 6/9] sysctl: route: share ipv4_route_flush_table between nets
Date
Signed-off-by: Lucian Adrian Grijincu <lucian.grijincu@gmail.com>
---
net/ipv4/route.c | 36 +++++++-----------------------------
1 files changed, 7 insertions(+), 29 deletions(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6ed6603..8fd0208 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3038,19 +3038,18 @@ void ip_rt_multicast_event(struct in_device *in_dev)

#ifdef CONFIG_SYSCTL
static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
- void __user *buffer,
- size_t *lenp, loff_t *ppos)
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos, void *cookie)
{
if (write) {
int flush_delay;
ctl_table ctl;
- struct net *net;
+ struct net *net = (struct net *) cookie;

memcpy(&ctl, __ctl, sizeof(ctl));
ctl.data = &flush_delay;
proc_dointvec(&ctl, write, buffer, lenp, ppos);

- net = (struct net *)__ctl->extra1;
rt_cache_flush(net, flush_delay);
return 0;
}
@@ -3191,7 +3190,7 @@ static struct ctl_table ipv4_route_flush_table[] = {
.procname = "flush",
.maxlen = sizeof(int),
.mode = 0200,
- .proc_handler = ipv4_sysctl_rtcache_flush,
+ .proc_handler = (proc_handler *) ipv4_sysctl_rtcache_flush,
},
{ },
};
@@ -3205,37 +3204,16 @@ static __net_initdata struct ctl_path ipv4_route_path[] = {

static __net_init int sysctl_route_net_init(struct net *net)
{
- struct ctl_table *tbl;
-
- tbl = ipv4_route_flush_table;
- if (!net_eq(net, &init_net)) {
- tbl = kmemdup(tbl, sizeof(ipv4_route_flush_table), GFP_KERNEL);
- if (tbl == NULL)
- goto err_dup;
- }
- tbl[0].extra1 = net;
-
- net->ipv4.route_hdr =
- register_net_sysctl_table(net, ipv4_route_path, tbl);
+ net->ipv4.route_hdr = register_net_sysctl_table(net,
+ ipv4_route_path, ipv4_route_flush_table);
if (net->ipv4.route_hdr == NULL)
- goto err_reg;
+ return -ENOMEM;
return 0;
-
-err_reg:
- if (tbl != ipv4_route_flush_table)
- kfree(tbl);
-err_dup:
- return -ENOMEM;
}

static __net_exit void sysctl_route_net_exit(struct net *net)
{
- struct ctl_table *tbl;
-
- tbl = net->ipv4.route_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->ipv4.route_hdr);
- BUG_ON(tbl == ipv4_route_flush_table);
- kfree(tbl);
}

static __net_initdata struct pernet_operations sysctl_route_ops = {
--
1.7.4.rc1.7.g2cf08.dirty


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