net_sched: make traffic control network namespace aware

Mostly minor changes to add a net argument to various functions and
remove initial network namespace checks.

Make /proc/net/psched per network namespace.

Signed-off-by: Tom Goff <thomas.goff@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 17 deletions

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 3725d8fa29db..4a795d966172 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -98,8 +98,9 @@ out:
 }
 EXPORT_SYMBOL(unregister_tcf_proto_ops);
 
-static int tfilter_notify(struct sk_buff *oskb, struct nlmsghdr *n,
-                          struct tcf_proto *tp, unsigned long fh, int event);
+static int tfilter_notify(struct net *net, struct sk_buff *oskb,
+                          struct nlmsghdr *n, struct tcf_proto *tp,
+                          unsigned long fh, int event);
 
 
 /* Select new prio value from the range, managed by kernel. */
@@ -137,9 +138,6 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
         int err;
         int tp_created = 0;
 
-        if (!net_eq(net, &init_net))
-                return -EINVAL;
-
 replay:
         t = NLMSG_DATA(n);
         protocol = TC_H_MIN(t->tcm_info);
@@ -158,7 +156,7 @@ replay:
         /* Find head of filter chain. */
 
         /* Find link */
-        dev = __dev_get_by_index(&init_net, t->tcm_ifindex);
+        dev = __dev_get_by_index(net, t->tcm_ifindex);
         if (dev == NULL)
                 return -ENODEV;
 
@@ -282,7 +280,7 @@ replay:
                         *back = tp->next;
                         spin_unlock_bh(root_lock);
 
-                        tfilter_notify(skb, n, tp, fh, RTM_DELTFILTER);
+                        tfilter_notify(net, skb, n, tp, fh, RTM_DELTFILTER);
                         tcf_destroy(tp);
                         err = 0;
                         goto errout;
@@ -305,10 +303,10 @@ replay:
                 case RTM_DELTFILTER:
                         err = tp->ops->delete(tp, fh);
                         if (err == 0)
-                                tfilter_notify(skb, n, tp, fh, RTM_DELTFILTER);
+                                tfilter_notify(net, skb, n, tp, fh, RTM_DELTFILTER);
                         goto errout;
                 case RTM_GETTFILTER:
-                        err = tfilter_notify(skb, n, tp, fh, RTM_NEWTFILTER);
+                        err = tfilter_notify(net, skb, n, tp, fh, RTM_NEWTFILTER);
                         goto errout;
                 default:
                         err = -EINVAL;
@@ -324,7 +322,7 @@ replay:
                         *back = tp;
                         spin_unlock_bh(root_lock);
                 }
-                tfilter_notify(skb, n, tp, fh, RTM_NEWTFILTER);
+                tfilter_notify(net, skb, n, tp, fh, RTM_NEWTFILTER);
         } else {
                 if (tp_created)
                         tcf_destroy(tp);
@@ -370,8 +368,9 @@ nla_put_failure:
         return -1;
 }
 
-static int tfilter_notify(struct sk_buff *oskb, struct nlmsghdr *n,
-                          struct tcf_proto *tp, unsigned long fh, int event)
+static int tfilter_notify(struct net *net, struct sk_buff *oskb,
+                          struct nlmsghdr *n, struct tcf_proto *tp,
+                          unsigned long fh, int event)
 {
         struct sk_buff *skb;
         u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
@@ -385,7 +384,7 @@ static int tfilter_notify(struct sk_buff *oskb, struct nlmsghdr *n,
                 return -EINVAL;
         }
 
-        return rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC,
+        return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
                               n->nlmsg_flags & NLM_F_ECHO);
 }
 
@@ -418,12 +417,9 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
         const struct Qdisc_class_ops *cops;
         struct tcf_dump_args arg;
 
-        if (!net_eq(net, &init_net))
-                return 0;
-
         if (cb->nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*tcm)))
                 return skb->len;
-        if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
+        if ((dev = __dev_get_by_index(net, tcm->tcm_ifindex)) == NULL)
                 return skb->len;
 
         if (!tcm->tcm_parent)