GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 23:32:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

net: rcu-ify tcf_proto

Browse source 
rcu'ify tcf_proto this allows calling tc_classify() without holding
any locks. Updaters are protected by RTNL.

This patch prepares the core net_sched infrastracture for running
the classifier/action chains without holding the qdisc lock however
it does nothing to ensure cls_xxx and act_xxx types also work without
locking. Additional patches are required to address the fall out.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2014-09-12 20:05:27 -07:00 • committed by David S. Miller
parent 46e5da40ae
commit 25d8c0d55f
17 changed files with 121 additions and 88 deletions
Download patch file Download diff file Expand all files Collapse all files

8
net/sched/sch_ingress.c
View file

@ -17,7 +17,7 @@
struct ingress_qdisc_data {
struct tcf_proto *filter_list;
struct tcf_proto __rcu *filter_list;
};
/* ------------------------- Class/flow operations ------------------------- */
@ -46,7 +46,8 @@ static void ingress_walk(struct Qdisc *sch, struct qdisc_walker *walker)
{
}
static struct tcf_proto **ingress_find_tcf(struct Qdisc *sch, unsigned long cl)
static struct tcf_proto __rcu **ingress_find_tcf(struct Qdisc *sch,
unsigned long cl)
{
struct ingress_qdisc_data *p = qdisc_priv(sch);
@ -59,9 +60,10 @@ static int ingress_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct ingress_qdisc_data *p = qdisc_priv(sch);
struct tcf_result res;
struct tcf_proto *fl = rcu_dereference_bh(p->filter_list);
int result;
result = tc_classify(skb, p->filter_list, &res);
result = tc_classify(skb, fl, &res);
qdisc_bstats_update(sch, skb);
switch (result) {