path: root/net/sched/act_sample.c
diff options
authorChris Mi <chrism@mellanox.com>2017-08-30 02:31:59 -0400
committerDavid S. Miller <davem@davemloft.net>2017-08-30 14:38:51 -0700
commit65a206c01e8e7ffe971477a36419422099216eff (patch)
treeea72c10c42996dc7d070968d45d86880fde71fac /net/sched/act_sample.c
parentnet/sched: Change cls_flower to use IDR (diff)
net/sched: Change act_api and act_xxx modules to use IDR
Typically, each TC filter has its own action. All the actions of the same type are saved in its hash table. But the hash buckets are too small that it degrades to a list. And the performance is greatly affected. For example, it takes about 0m11.914s to insert 64K rules. If we convert the hash table to IDR, it only takes about 0m1.500s. The improvement is huge. But please note that the test result is based on previous patch that cls_flower uses IDR. Signed-off-by: Chris Mi <chrism@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_sample.c')
1 files changed, 8 insertions, 9 deletions
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 59d6645a4007..ec986ae52808 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -25,7 +25,6 @@
#include <linux/if_arp.h>
-#define SAMPLE_TAB_MASK 7
static unsigned int sample_net_id;
static struct tc_action_ops act_sample_ops;
@@ -59,18 +58,18 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla,
parm = nla_data(tb[TCA_SAMPLE_PARMS]);
- exists = tcf_hash_check(tn, parm->index, a, bind);
+ exists = tcf_idr_check(tn, parm->index, a, bind);
if (exists && bind)
return 0;
if (!exists) {
- ret = tcf_hash_create(tn, parm->index, est, a,
- &act_sample_ops, bind, false);
+ ret = tcf_idr_create(tn, parm->index, est, a,
+ &act_sample_ops, bind, false);
if (ret)
return ret;
} else {
- tcf_hash_release(*a, bind);
+ tcf_idr_release(*a, bind);
if (!ovr)
return -EEXIST;
@@ -82,7 +81,7 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla,
psample_group = psample_group_get(net, s->psample_group_num);
if (!psample_group) {
if (ret == ACT_P_CREATED)
- tcf_hash_release(*a, bind);
+ tcf_idr_release(*a, bind);
return -ENOMEM;
RCU_INIT_POINTER(s->psample_group, psample_group);
@@ -93,7 +92,7 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla,
if (ret == ACT_P_CREATED)
- tcf_hash_insert(tn, *a);
+ tcf_idr_insert(tn, *a);
return ret;
@@ -221,7 +220,7 @@ static int tcf_sample_search(struct net *net, struct tc_action **a, u32 index)
struct tc_action_net *tn = net_generic(net, sample_net_id);
- return tcf_hash_search(tn, a, index);
+ return tcf_idr_search(tn, a, index);
static struct tc_action_ops act_sample_ops = {
@@ -241,7 +240,7 @@ static __net_init int sample_init_net(struct net *net)
struct tc_action_net *tn = net_generic(net, sample_net_id);
- return tc_action_net_init(tn, &act_sample_ops, SAMPLE_TAB_MASK);
+ return tc_action_net_init(tn, &act_sample_ops);
static void __net_exit sample_exit_net(struct net *net)