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cgroup: net_cls: Pass in task to sock_update_classid() 

sock_update_classid() assumes that the update operation always are
applied on the current task. sock_update_classid() needs to know on
which tasks to work on in order to be able to migrate task between
cgroups using the struct cgroup_subsys attach() callback.

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Joe Perches <joe@perches.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <netdev@vger.kernel.org>
Cc: <cgroups@vger.kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Wagner 2012-10-25 04:16:58 +00:00 committed by David S. Miller
parent 3ace03cc2a
commit fd9a08a7b8
4 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/tun.c
View File

@ -587,7 +587,7 @@ static struct sk_buff *tun_alloc_skb(struct tun_struct *tun,
struct sk_buff *skb;
int err;
sock_update_classid(sk);
sock_update_classid(sk, current);
/* Under a page? Don't bother with paged skb. */
if (prepad + len < PAGE_SIZE || !linear)

2
include/net/cls_cgroup.h
View File

@ -24,7 +24,7 @@ struct cgroup_cls_state
u32 classid;
};
extern void sock_update_classid(struct sock *sk);
extern void sock_update_classid(struct sock *sk, struct task_struct *task);
#if IS_BUILTIN(CONFIG_NET_CLS_CGROUP)
static inline u32 task_cls_classid(struct task_struct *p)

6
net/core/sock.c
View File

@ -1217,11 +1217,11 @@ static void sk_prot_free(struct proto *prot, struct sock *sk)
#ifdef CONFIG_CGROUPS
#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
void sock_update_classid(struct sock *sk)
void sock_update_classid(struct sock *sk, struct task_struct *task)
{
u32 classid;
classid = task_cls_classid(current);
classid = task_cls_classid(task);
if (classid != sk->sk_classid)
sk->sk_classid = classid;
}
@ -1264,7 +1264,7 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
sock_net_set(sk, get_net(net));
atomic_set(&sk->sk_wmem_alloc, 1);
sock_update_classid(sk);
sock_update_classid(sk, current);
sock_update_netprioidx(sk, current);
}

8
net/socket.c
View File

@ -620,7 +620,7 @@ static inline int __sock_sendmsg_nosec(struct kiocb *iocb, struct socket *sock,
{
struct sock_iocb *si = kiocb_to_siocb(iocb);
sock_update_classid(sock->sk);
sock_update_classid(sock->sk, current);
si->sock = sock;
si->scm = NULL;
@ -784,7 +784,7 @@ static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock,
{
struct sock_iocb *si = kiocb_to_siocb(iocb);
sock_update_classid(sock->sk);
sock_update_classid(sock->sk, current);
si->sock = sock;
si->scm = NULL;
@ -896,7 +896,7 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
if (unlikely(!sock->ops->splice_read))
return -EINVAL;
sock_update_classid(sock->sk);
sock_update_classid(sock->sk, current);
return sock->ops->splice_read(sock, ppos, pipe, len, flags);
}
@ -3437,7 +3437,7 @@ EXPORT_SYMBOL(kernel_setsockopt);
int kernel_sendpage(struct socket *sock, struct page *page, int offset,
size_t size, int flags)
{
sock_update_classid(sock->sk);
sock_update_classid(sock->sk, current);
if (sock->ops->sendpage)
return sock->ops->sendpage(sock, page, offset, size, flags);