From: <gregkh@suse•de>
To: ebiederm@xmission•com, bcrl@lhnet•ca, cornelia.huck@de•ibm.com,
davem@davemloft•net, eric.dumazet@gmail•com, gregkh@suse•de,
kay.sievers@vrfy•org, netdev@vger•kernel.org, serue@us•ibm.
Subject: patch kobject-send-hotplug-events-in-all-network-namespaces.patch added to gregkh-2.6 tree
Date: Thu, 20 May 2010 11:10:37 -0700 [thread overview]
Message-ID: <12743790374089@kroah.org> (raw)
In-Reply-To: <1273019809-16472-1-git-send-email-ebiederm@xmission.com>
This is a note to let you know that I've just added the patch titled
Subject: kobject: Send hotplug events in all network namespaces
to my gregkh-2.6 tree. Its filename is
kobject-send-hotplug-events-in-all-network-namespaces.patch
This tree can be found at
http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/
>From ebiederm@xmission•com Thu May 20 10:40:26 2010
From: "Eric W. Biederman" <ebiederm@xmission•com>
Date: Tue, 4 May 2010 17:36:44 -0700
Subject: kobject: Send hotplug events in all network namespaces
To: Greg Kroah-Hartman <gregkh@suse•de>
Cc: Kay Sievers <kay.sievers@vrfy•org>, linux-kernel@vger•kernel.org, Tejun Heo <tj@kernel•org>, Cornelia Huck <cornelia.huck@de•ibm.com>, Eric Dumazet <eric.dumazet@gmail•com>, Benjamin LaHaise <bcrl@lhnet•ca>, Serge Hallyn <serue@us•ibm.com>, <netdev@vger•kernel.org>, David Miller <davem@davemloft•net>, "Eric W. Biederman" <ebiederm@xmission•com>
Message-ID: <1273019809-16472-1-git-send-email-ebiederm@xmission•com>
From: Eric W. Biederman <ebiederm@xmission•com>
Open a copy of the uevent kernel socket in each network
namespace so we can send uevents in all network namespaces.
Signed-off-by: Eric W. Biederman <ebiederm@xmission•com>
Acked-by: David S. Miller <davem@davemloft•net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse•de>
---
lib/kobject_uevent.c | 68 +++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 60 insertions(+), 8 deletions(-)
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -24,13 +24,19 @@
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <net/sock.h>
+#include <net/net_namespace.h>
u64 uevent_seqnum;
char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;
static DEFINE_SPINLOCK(sequence_lock);
-#if defined(CONFIG_NET)
-static struct sock *uevent_sock;
+#ifdef CONFIG_NET
+struct uevent_sock {
+ struct list_head list;
+ struct sock *sk;
+};
+static LIST_HEAD(uevent_sock_list);
+static DEFINE_MUTEX(uevent_sock_mutex);
#endif
/* the strings here must match the enum in include/linux/kobject.h */
@@ -100,6 +106,9 @@ int kobject_uevent_env(struct kobject *k
u64 seq;
int i = 0;
int retval = 0;
+#ifdef CONFIG_NET
+ struct uevent_sock *ue_sk;
+#endif
pr_debug("kobject: '%s' (%p): %s\n",
kobject_name(kobj), kobj, __func__);
@@ -211,7 +220,9 @@ int kobject_uevent_env(struct kobject *k
#if defined(CONFIG_NET)
/* send netlink message */
- if (uevent_sock) {
+ mutex_lock(&uevent_sock_mutex);
+ list_for_each_entry(ue_sk, &uevent_sock_list, list) {
+ struct sock *uevent_sock = ue_sk->sk;
struct sk_buff *skb;
size_t len;
@@ -241,6 +252,7 @@ int kobject_uevent_env(struct kobject *k
} else
retval = -ENOMEM;
}
+ mutex_unlock(&uevent_sock_mutex);
#endif
/* call uevent_helper, usually only enabled during early boot */
@@ -320,18 +332,58 @@ int add_uevent_var(struct kobj_uevent_en
EXPORT_SYMBOL_GPL(add_uevent_var);
#if defined(CONFIG_NET)
-static int __init kobject_uevent_init(void)
+static int uevent_net_init(struct net *net)
{
- uevent_sock = netlink_kernel_create(&init_net, NETLINK_KOBJECT_UEVENT,
- 1, NULL, NULL, THIS_MODULE);
- if (!uevent_sock) {
+ struct uevent_sock *ue_sk;
+
+ ue_sk = kzalloc(sizeof(*ue_sk), GFP_KERNEL);
+ if (!ue_sk)
+ return -ENOMEM;
+
+ ue_sk->sk = netlink_kernel_create(net, NETLINK_KOBJECT_UEVENT,
+ 1, NULL, NULL, THIS_MODULE);
+ if (!ue_sk->sk) {
printk(KERN_ERR
"kobject_uevent: unable to create netlink socket!\n");
return -ENODEV;
}
- netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
+ mutex_lock(&uevent_sock_mutex);
+ list_add_tail(&ue_sk->list, &uevent_sock_list);
+ mutex_unlock(&uevent_sock_mutex);
return 0;
}
+static void uevent_net_exit(struct net *net)
+{
+ struct uevent_sock *ue_sk;
+
+ mutex_lock(&uevent_sock_mutex);
+ list_for_each_entry(ue_sk, &uevent_sock_list, list) {
+ if (sock_net(ue_sk->sk) == net)
+ goto found;
+ }
+ mutex_unlock(&uevent_sock_mutex);
+ return;
+
+found:
+ list_del(&ue_sk->list);
+ mutex_unlock(&uevent_sock_mutex);
+
+ netlink_kernel_release(ue_sk->sk);
+ kfree(ue_sk);
+}
+
+static struct pernet_operations uevent_net_ops = {
+ .init = uevent_net_init,
+ .exit = uevent_net_exit,
+};
+
+static int __init kobject_uevent_init(void)
+{
+ netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
+ return register_pernet_subsys(&uevent_net_ops);
+}
+
+
postcore_initcall(kobject_uevent_init);
#endif
next prev parent reply other threads:[~2010-05-20 18:10 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-30 18:30 [PATCH 0/6] tagged sysfs support Eric W. Biederman
2010-03-30 18:31 ` [PATCH 1/6] sysfs: Basic support for multiple super blocks Eric W. Biederman
2010-03-30 19:23 ` Eric Dumazet
2010-03-30 23:50 ` [PATCH 7/6] sysfs: Remove double free sysfs_get_sb Eric W. Biederman
2010-03-31 5:01 ` [PATCH 1/6] sysfs: Basic support for multiple super blocks Serge E. Hallyn
2010-03-31 5:01 ` Serge E. Hallyn
2010-03-31 5:41 ` Tejun Heo
2010-03-31 5:51 ` Eric W. Biederman
2010-03-31 13:47 ` Serge E. Hallyn
2010-03-31 14:02 ` Eric W. Biederman
2010-04-05 7:45 ` Tejun Heo
2010-04-29 20:29 ` patch sysfs-basic-support-for-multiple-super-blocks.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 2/6] kobj: Add basic infrastructure for dealing with namespaces Eric W. Biederman
2010-04-29 20:29 ` patch kobj-add-basic-infrastructure-for-dealing-with-namespaces.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 3/6] sysfs: Implement sysfs tagged directory support Eric W. Biederman
2010-03-31 2:43 ` Serge E. Hallyn
2010-03-31 3:38 ` Eric W. Biederman
2010-03-31 4:02 ` Serge E. Hallyn
2010-03-31 4:23 ` Eric W. Biederman
2010-03-31 4:53 ` Serge E. Hallyn
2010-03-31 6:49 ` Tejun Heo
2010-03-31 7:43 ` Eric W. Biederman
2010-03-31 8:17 ` Tejun Heo
2010-03-31 8:22 ` Tejun Heo
2010-03-31 9:39 ` Eric W. Biederman
2010-04-05 8:17 ` Tejun Heo
2010-04-29 20:29 ` patch sysfs-implement-sysfs-tagged-directory-support.patch added to gregkh-2.6 tree gregkh
2010-04-30 4:18 ` Tejun Heo
2010-04-30 4:45 ` Greg KH
2010-04-30 5:24 ` Eric W. Biederman
2010-04-30 5:37 ` Tejun Heo
2010-04-30 6:12 ` Tejun Heo
2010-04-30 14:29 ` Serge E. Hallyn
2010-04-30 15:22 ` Tejun Heo
2010-04-30 15:43 ` Serge E. Hallyn
2010-04-30 15:58 ` Greg KH
2010-03-30 18:31 ` [PATCH 4/6] sysfs: Add support for tagged directories with untagged members Eric W. Biederman
2010-04-29 20:29 ` patch sysfs-add-support-for-tagged-directories-with-untagged-members.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 5/6] sysfs: Implement sysfs_delete_link Eric W. Biederman
2010-04-29 20:29 ` patch sysfs-implement-sysfs_delete_link.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:31 ` [PATCH 6/6] driver core: Implement ns directory support for device classes Eric W. Biederman
2010-04-29 20:29 ` patch driver-core-implement-ns-directory-support-for-device-classes.patch added to gregkh-2.6 tree gregkh
2010-03-30 18:53 ` [PATCH 0/6] tagged sysfs support Kay Sievers
2010-03-30 23:04 ` Eric W. Biederman
2010-03-31 5:51 ` Kay Sievers
2010-03-31 6:25 ` Tejun Heo
2010-03-31 6:52 ` Eric W. Biederman
2010-04-03 0:58 ` Ben Hutchings
2010-04-03 8:35 ` Kay Sievers
2010-04-03 16:05 ` Ben Hutchings
2010-04-03 16:35 ` Kay Sievers
2010-03-31 17:21 ` Serge E. Hallyn
2010-03-31 18:09 ` Eric W. Biederman
2010-05-05 0:35 ` [PATCH 0/6] netns support in the kobject layer Eric W. Biederman
2010-05-06 20:04 ` Greg KH
2010-05-16 6:26 ` David Miller
2010-05-17 18:11 ` Greg KH
2010-05-17 20:58 ` Eric W. Biederman
2010-05-17 21:03 ` Greg KH
2010-05-17 22:37 ` Eric W. Biederman
2010-05-17 22:54 ` Greg KH
2010-05-17 23:48 ` David Miller
2010-05-18 4:08 ` Greg KH
2010-05-18 4:21 ` David Miller
2010-05-05 0:36 ` [PATCH 1/6] kobject: Send hotplug events in all network namespaces Eric W. Biederman
2010-05-20 18:10 ` gregkh [this message]
2010-05-05 0:36 ` [PATCH 2/6] netns: Teach network device kobjects which namespace they are in Eric W. Biederman
2010-05-05 15:17 ` Serge E. Hallyn
2010-05-05 19:56 ` Eric W. Biederman
2010-05-05 22:01 ` Serge E. Hallyn
2010-05-17 4:59 ` [PATCH 7/6] net/sysfs: Fix the bitrot in network device kobject namespace support Eric W. Biederman
2010-05-17 5:07 ` David Miller
2010-05-20 18:10 ` patch netns-teach-network-device-kobjects-which-namespace-they-are-in.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 3/6] netlink: Implment netlink_broadcast_filtered Eric W. Biederman
2010-05-20 18:10 ` patch netlink-implment-netlink_broadcast_filtered.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 4/6] kobj: Send hotplug events in the proper namespace Eric W. Biederman
2010-05-20 18:10 ` patch kobj-send-hotplug-events-in-the-proper-namespace.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 5/6] hotplug: netns aware uevent_helper Eric W. Biederman
2010-05-20 18:10 ` patch hotplug-netns-aware-uevent_helper.patch added to gregkh-2.6 tree gregkh
2010-05-05 0:36 ` [PATCH 6/6] net: Expose all network devices in a namespaces in sysfs Eric W. Biederman
2010-05-20 18:10 ` patch net-expose-all-network-devices-in-a-namespaces-in-sysfs.patch added to gregkh-2.6 tree gregkh
2010-05-20 17:47 ` [PATCH 0/6] tagged sysfs support Greg KH
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