diff options
Diffstat (limited to 'net/sched/cls_cgroup.c')
| -rw-r--r-- | net/sched/cls_cgroup.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c index 31f06b633574..6db7855b9029 100644 --- a/net/sched/cls_cgroup.c +++ b/net/sched/cls_cgroup.c @@ -17,6 +17,7 @@ #include <linux/skbuff.h> #include <linux/cgroup.h> #include <linux/rcupdate.h> +#include <linux/fdtable.h> #include <net/rtnetlink.h> #include <net/pkt_cls.h> #include <net/sock.h> @@ -57,6 +58,28 @@ static void cgrp_css_free(struct cgroup *cgrp) kfree(cgrp_cls_state(cgrp)); } +static int update_classid(const void *v, struct file *file, unsigned n) +{ + int err; + struct socket *sock = sock_from_file(file, &err); + if (sock) + sock->sk->sk_classid = (u32)(unsigned long)v; + return 0; +} + +static void cgrp_attach(struct cgroup *cgrp, struct cgroup_taskset *tset) +{ + struct task_struct *p; + void *v; + + cgroup_taskset_for_each(p, cgrp, tset) { + task_lock(p); + v = (void *)(unsigned long)task_cls_classid(p); + iterate_fd(p->files, 0, update_classid, v); + task_unlock(p); + } +} + static u64 read_classid(struct cgroup *cgrp, struct cftype *cft) { return cgrp_cls_state(cgrp)->classid; @@ -82,6 +105,7 @@ struct cgroup_subsys net_cls_subsys = { .css_alloc = cgrp_css_alloc, .css_online = cgrp_css_online, .css_free = cgrp_css_free, + .attach = cgrp_attach, .subsys_id = net_cls_subsys_id, .base_cftypes = ss_files, .module = THIS_MODULE, |