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net_sched: switch to rcu_work

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Commit 05f0fe6b74 ("RCU, workqueue: Implement rcu_work") introduces
new API's for dispatching work in a RCU callback. Now we can just
switch to the new API's for tc filters. This could get rid of a lot
of code.

Cc: Tejun Heo <tj@kernel.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang
2018-05-23 15:26:53 -07:00
committed by David S. Miller
parent 1bb58d2d3c
commit aaa908ffbe
13 changed files with 85 additions and 221 deletions
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41
net/sched/cls_tcindex.c
View File

@@ -28,20 +28,14 @@
struct tcindex_filter_result {
struct tcf_exts exts;
struct tcf_result res;
union {
struct work_struct work;
struct rcu_head rcu;
};
struct rcu_work rwork;
};
struct tcindex_filter {
u16 key;
struct tcindex_filter_result result;
struct tcindex_filter __rcu *next;
union {
struct work_struct work;
struct rcu_head rcu;
};
struct rcu_work rwork;
};
@@ -152,21 +146,14 @@ static void tcindex_destroy_rexts_work(struct work_struct *work)
{
struct tcindex_filter_result *r;
r = container_of(work, struct tcindex_filter_result, work);
r = container_of(to_rcu_work(work),
struct tcindex_filter_result,
rwork);
rtnl_lock();
__tcindex_destroy_rexts(r);
rtnl_unlock();
}
static void tcindex_destroy_rexts(struct rcu_head *head)
{
struct tcindex_filter_result *r;
r = container_of(head, struct tcindex_filter_result, rcu);
INIT_WORK(&r->work, tcindex_destroy_rexts_work);
tcf_queue_work(&r->work);
}
static void __tcindex_destroy_fexts(struct tcindex_filter *f)
{
tcf_exts_destroy(&f->result.exts);
@@ -176,23 +163,15 @@ static void __tcindex_destroy_fexts(struct tcindex_filter *f)
static void tcindex_destroy_fexts_work(struct work_struct *work)
{
struct tcindex_filter *f = container_of(work, struct tcindex_filter,
work);
struct tcindex_filter *f = container_of(to_rcu_work(work),
struct tcindex_filter,
rwork);
rtnl_lock();
__tcindex_destroy_fexts(f);
rtnl_unlock();
}
static void tcindex_destroy_fexts(struct rcu_head *head)
{
struct tcindex_filter *f = container_of(head, struct tcindex_filter,
rcu);
INIT_WORK(&f->work, tcindex_destroy_fexts_work);
tcf_queue_work(&f->work);
}
static int tcindex_delete(struct tcf_proto *tp, void *arg, bool *last,
struct netlink_ext_ack *extack)
{
@@ -228,12 +207,12 @@ found:
*/
if (f) {
if (tcf_exts_get_net(&f->result.exts))
call_rcu(&f->rcu, tcindex_destroy_fexts);
tcf_queue_work(&f->rwork, tcindex_destroy_fexts_work);
else
__tcindex_destroy_fexts(f);
} else {
if (tcf_exts_get_net(&r->exts))
call_rcu(&r->rcu, tcindex_destroy_rexts);
tcf_queue_work(&r->rwork, tcindex_destroy_rexts_work);
else
__tcindex_destroy_rexts(r);
}