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| author | David S. Miller <davem@davemloft.net> | 2008-07-16 02:40:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-17 19:21:24 -0700 |
| commit | 55dbc640c31db373fa07eb1e3af9b8eadbdf80db (patch) | |
| tree | 6a1ae2d8c1ab68a8e631bba21cc2a273c6982d2b /net/sched/cls_api.c | |
| parent | 17715e62a5e5c7224e5f906a4b8f9e5084100118 (diff) | |
| download | lwn-55dbc640c31db373fa07eb1e3af9b8eadbdf80db.tar.gz lwn-55dbc640c31db373fa07eb1e3af9b8eadbdf80db.zip | |
pkt_sched: Remove qdisc_lock_tree usage in cls_api.c
It just wants the qdisc tree for the filter to be synchronized.
So just BH lock qdisc_root_lock(q) instead.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_api.c')
| -rw-r--r-- | net/sched/cls_api.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index d0b0a9b14394..d2b6f54a6261 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -120,6 +120,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg) { struct net *net = sock_net(skb->sk); struct nlattr *tca[TCA_MAX + 1]; + spinlock_t *root_lock; struct tcmsg *t; u32 protocol; u32 prio; @@ -204,6 +205,8 @@ replay: } } + root_lock = qdisc_root_lock(q); + if (tp == NULL) { /* Proto-tcf does not exist, create new one */ @@ -263,10 +266,10 @@ replay: goto errout; } - qdisc_lock_tree(dev); + spin_lock_bh(root_lock); tp->next = *back; *back = tp; - qdisc_unlock_tree(dev); + spin_unlock_bh(root_lock); } else if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], tp->ops->kind)) goto errout; @@ -275,9 +278,9 @@ replay: if (fh == 0) { if (n->nlmsg_type == RTM_DELTFILTER && t->tcm_handle == 0) { - qdisc_lock_tree(dev); + spin_lock_bh(root_lock); *back = tp->next; - qdisc_unlock_tree(dev); + spin_lock_bh(root_lock); tfilter_notify(skb, n, tp, fh, RTM_DELTFILTER); tcf_destroy(tp); |