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Date: Tue, 24 Mar 2020 11:47:41 +0800
From: Po Liu <Po.Liu@....com>
To: davem@...emloft.net, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Cc: vinicius.gomes@...el.com, po.liu@....com, claudiu.manoil@....com,
vladimir.oltean@....com, alexandru.marginean@....com,
xiaoliang.yang_1@....com, roy.zang@....com, mingkai.hu@....com,
jerry.huang@....com, leoyang.li@....com, michael.chan@...adcom.com,
vishal@...lsio.com, saeedm@...lanox.com, leon@...nel.org,
jiri@...lanox.com, idosch@...lanox.com,
alexandre.belloni@...tlin.com, UNGLinuxDriver@...rochip.com,
kuba@...nel.org, jhs@...atatu.com, xiyou.wangcong@...il.com,
simon.horman@...ronome.com, pablo@...filter.org,
moshe@...lanox.com, m-karicheri2@...com,
andre.guedes@...ux.intel.com, stephen@...workplumber.org,
Po Liu <Po.Liu@....com>
Subject: [v1,net-next 3/5] net: schedule: add action gate offloading
Add the gate action to the flow action entry. Add the gate parameters to
the tc_setup_flow_action() queueing to the entries of flow_action_entry
array provide to the driver.
Signed-off-by: Po Liu <Po.Liu@....com>
---
include/net/flow_offload.h | 10 +++
include/net/tc_act/tc_gate.h | 115 +++++++++++++++++++++++++++++++++++
net/sched/cls_api.c | 33 ++++++++++
3 files changed, 158 insertions(+)
diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index cae3658a1844..ef9b8fe82e85 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -147,6 +147,7 @@ enum flow_action_id {
FLOW_ACTION_MPLS_PUSH,
FLOW_ACTION_MPLS_POP,
FLOW_ACTION_MPLS_MANGLE,
+ FLOW_ACTION_GATE,
NUM_FLOW_ACTIONS,
};
@@ -254,6 +255,15 @@ struct flow_action_entry {
u8 bos;
u8 ttl;
} mpls_mangle;
+ struct {
+ u32 index;
+ s32 prio;
+ u64 basetime;
+ u64 cycletime;
+ u64 cycletimeext;
+ u32 num_entries;
+ struct action_gate_entry *entries;
+ } gate;
};
struct flow_action_cookie *cookie; /* user defined action cookie */
};
diff --git a/include/net/tc_act/tc_gate.h b/include/net/tc_act/tc_gate.h
index b0ace55b2aaa..62633cb02c7a 100644
--- a/include/net/tc_act/tc_gate.h
+++ b/include/net/tc_act/tc_gate.h
@@ -7,6 +7,13 @@
#include <net/act_api.h>
#include <linux/tc_act/tc_gate.h>
+struct action_gate_entry {
+ u8 gate_state;
+ u32 interval;
+ s32 ipv;
+ s32 maxoctets;
+};
+
struct tcfg_gate_entry {
int index;
u8 gate_state;
@@ -51,4 +58,112 @@ struct tcf_gate {
#define get_gate_param(act) ((struct tcf_gate_params *)act)
#define get_gate_action(p) ((struct gate_action *)p)
+static inline bool is_tcf_gate(const struct tc_action *a)
+{
+#ifdef CONFIG_NET_CLS_ACT
+ if (a->ops && a->ops->id == TCA_ID_GATE)
+ return true;
+#endif
+ return false;
+}
+
+static inline u32 tcf_gate_index(const struct tc_action *a)
+{
+ return a->tcfa_index;
+}
+
+static inline s32 tcf_gate_prio(const struct tc_action *a)
+{
+ s32 tcfg_prio;
+
+ rcu_read_lock();
+ tcfg_prio = rcu_dereference(to_gate(a)->actg)->param.tcfg_priority;
+ rcu_read_unlock();
+
+ return tcfg_prio;
+}
+
+static inline u64 tcf_gate_basetime(const struct tc_action *a)
+{
+ u64 tcfg_basetime;
+
+ rcu_read_lock();
+ tcfg_basetime =
+ rcu_dereference(to_gate(a)->actg)->param.tcfg_basetime;
+ rcu_read_unlock();
+
+ return tcfg_basetime;
+}
+
+static inline u64 tcf_gate_cycletime(const struct tc_action *a)
+{
+ u64 tcfg_cycletime;
+
+ rcu_read_lock();
+ tcfg_cycletime =
+ rcu_dereference(to_gate(a)->actg)->param.tcfg_cycletime;
+ rcu_read_unlock();
+
+ return tcfg_cycletime;
+}
+
+static inline u64 tcf_gate_cycletimeext(const struct tc_action *a)
+{
+ u64 tcfg_cycletimeext;
+
+ rcu_read_lock();
+ tcfg_cycletimeext =
+ rcu_dereference(to_gate(a)->actg)->param.tcfg_cycletime_ext;
+ rcu_read_unlock();
+
+ return tcfg_cycletimeext;
+}
+
+static inline u32 tcf_gate_num_entries(const struct tc_action *a)
+{
+ u32 num_entries;
+
+ rcu_read_lock();
+ num_entries =
+ rcu_dereference(to_gate(a)->actg)->param.num_entries;
+ rcu_read_unlock();
+
+ return num_entries;
+}
+
+static inline struct action_gate_entry
+ *tcf_gate_get_list(const struct tc_action *a)
+{
+ struct action_gate_entry *oe;
+ struct tcf_gate_params *p;
+ struct tcfg_gate_entry *entry;
+ u32 num_entries;
+ int i = 0;
+
+ rcu_read_lock();
+ p = &(rcu_dereference(to_gate(a)->actg)->param);
+ num_entries = p->num_entries;
+ rcu_read_unlock();
+
+ list_for_each_entry(entry, &p->entries, list)
+ i++;
+
+ if (i != num_entries)
+ return NULL;
+
+ oe = kzalloc(sizeof(*oe) * num_entries, GFP_KERNEL);
+ if (!oe)
+ return NULL;
+
+ i = 0;
+ list_for_each_entry(entry, &p->entries, list) {
+ oe[i].gate_state = entry->gate_state;
+ oe[i].interval = entry->interval;
+ oe[i].ipv = entry->ipv;
+ oe[i].maxoctets = entry->maxoctets;
+ i++;
+ }
+
+ return oe;
+}
#endif
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index fb6c3660fb9a..047733442850 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -39,6 +39,7 @@
#include <net/tc_act/tc_skbedit.h>
#include <net/tc_act/tc_ct.h>
#include <net/tc_act/tc_mpls.h>
+#include <net/tc_act/tc_gate.h>
#include <net/flow_offload.h>
extern const struct nla_policy rtm_tca_policy[TCA_MAX + 1];
@@ -3522,6 +3523,27 @@ static void tcf_sample_get_group(struct flow_action_entry *entry,
#endif
}
+static void tcf_gate_entry_destructor(void *priv)
+{
+ struct action_gate_entry *oe = priv;
+
+ kfree(oe);
+}
+
+static int tcf_gate_get_entries(struct flow_action_entry *entry,
+ const struct tc_action *act)
+{
+ entry->gate.entries = tcf_gate_get_list(act);
+
+ if (!entry->gate.entries)
+ return -EINVAL;
+
+ entry->destructor = tcf_gate_entry_destructor;
+ entry->destructor_priv = entry->gate.entries;
+
+ return 0;
+}
+
int tc_setup_flow_action(struct flow_action *flow_action,
const struct tcf_exts *exts)
{
@@ -3668,6 +3690,17 @@ int tc_setup_flow_action(struct flow_action *flow_action,
} else if (is_tcf_skbedit_priority(act)) {
entry->id = FLOW_ACTION_PRIORITY;
entry->priority = tcf_skbedit_priority(act);
+ } else if (is_tcf_gate(act)) {
+ entry->id = FLOW_ACTION_GATE;
+ entry->gate.index = tcf_gate_index(act);
+ entry->gate.prio = tcf_gate_prio(act);
+ entry->gate.basetime = tcf_gate_basetime(act);
+ entry->gate.cycletime = tcf_gate_cycletime(act);
+ entry->gate.cycletimeext = tcf_gate_cycletimeext(act);
+ entry->gate.num_entries = tcf_gate_num_entries(act);
+ err = tcf_gate_get_entries(entry, act);
+ if (err)
+ goto err_out;
} else {
err = -EOPNOTSUPP;
goto err_out_locked;
--
2.17.1
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