On 08/07/2012 01:23 PM, Eric W. Biederman wrote:
Start with an empty sctp_net_table that will be populated as the various
tunable sysctls are made per net.
Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Acked-by: Vlad Yasevich <vyasevich@xxxxxxxxx>
---
include/net/netns/sctp.h | 6 +++++-
include/net/sctp/sctp.h | 4 ++++
net/sctp/protocol.c | 7 +++++++
net/sctp/sysctl.c | 21 +++++++++++++++++++++
4 files changed, 37 insertions(+), 1 deletions(-)
diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
index 06ccddf..9576b60 100644
--- a/include/net/netns/sctp.h
+++ b/include/net/netns/sctp.h
@@ -4,6 +4,7 @@
struct sock;
struct proc_dir_entry;
struct sctp_mib;
+struct ctl_table_header;
struct netns_sctp {
DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
@@ -11,7 +12,9 @@ struct netns_sctp {
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_net_sctp;
#endif
-
+#ifdef CONFIG_SYSCTL
+ struct ctl_table_header *sysctl_header;
+#endif
/* This is the global socket data structure used for responding to
* the Out-of-the-blue (OOTB) packets. A control sock will be created
* for this socket at the initialization time.
@@ -32,6 +35,7 @@ struct netns_sctp {
/* Lock that protects the local_addr_list writers */
spinlock_t local_addr_lock;
+
};
#endif /* __NETNS_SCTP_H__ */
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index b0e6fe5..15037e7 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -375,9 +375,13 @@ static inline void sctp_dbg_objcnt_exit(void) { return; }
#if defined CONFIG_SYSCTL
void sctp_sysctl_register(void);
void sctp_sysctl_unregister(void);
+int sctp_sysctl_net_register(struct net *net);
+void sctp_sysctl_net_unregister(struct net *net);
#else
static inline void sctp_sysctl_register(void) { return; }
static inline void sctp_sysctl_unregister(void) { return; }
+static inline int sctp_sysctl_net_register(struct net *net) { return 0; }
+static inline void sctp_sysctl_net_unregister(struct net *net) { return; }
#endif
/* Size of Supported Address Parameter for 'x' address types. */
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 69bdc72..de25d9c 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1169,6 +1169,10 @@ static int sctp_net_init(struct net *net)
{
int status;
+ status = sctp_sysctl_net_register(net);
+ if (status)
+ goto err_sysctl_register;
+
/* Allocate and initialise sctp mibs. */
status = init_sctp_mibs(net);
if (status)
@@ -1205,6 +1209,8 @@ err_ctl_sock_init:
err_init_proc:
cleanup_sctp_mibs(net);
err_init_mibs:
+ sctp_sysctl_net_unregister(net);
+err_sysctl_register:
return status;
}
@@ -1219,6 +1225,7 @@ static void sctp_net_exit(struct net *net)
sctp_proc_exit(net);
cleanup_sctp_mibs(net);
+ sctp_sysctl_net_unregister(net);
}
static struct pernet_operations sctp_net_ops = {
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 2b2bfe9..7528d59 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -284,6 +284,27 @@ static ctl_table sctp_table[] = {
{ /* sentinel */ }
};
+static ctl_table sctp_net_table[] = {
+ { /* sentinel */ }
+};
+
+int sctp_sysctl_net_register(struct net *net)
+{
+ struct ctl_table *table;
+
+ table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
+ return 0;
+}
+
+void sctp_sysctl_net_unregister(struct net *net)
+{
+ unregister_net_sysctl_table(net->sctp.sysctl_header);
+}
+
static struct ctl_table_header * sctp_sysctl_header;
/* Sysctl registration. */
--
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