From: wenxu <wenxu@xxxxxxxxx>
It provide a callback to find the tcf block in
the flow_indr_block_dev_get
Signed-off-by: wenxu <wenxu@xxxxxxxxx>
---
include/net/flow_offload.h | 4 ++++
net/core/flow_offload.c | 12 ++++++++++++
net/sched/cls_api.c | 31 +++++++++++++++++++++++++++++++
3 files changed, 47 insertions(+)
diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index 373028e..0ebb7e1 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -371,6 +371,10 @@ struct flow_indr_block_dev {
void *block;
};
+typedef void flow_indr_get_default_block_t(struct flow_indr_block_dev *indr_dev);
+
+void flow_indr_set_default_block_cb(flow_indr_get_default_block_t *cb);
+
struct flow_indr_block_dev *flow_indr_block_dev_lookup(struct net_device *dev);
int flow_indr_rhashtable_init(void);
diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
index 77e18dc..6aa02b5 100644
--- a/net/core/flow_offload.c
+++ b/net/core/flow_offload.c
@@ -298,6 +298,14 @@ struct flow_indr_block_dev *
}
EXPORT_SYMBOL(flow_indr_block_dev_lookup);
+static flow_indr_get_default_block_t *flow_indr_get_default_block;
+
+void flow_indr_set_default_block_cb(flow_indr_get_default_block_t *cb)
+{
+ flow_indr_get_default_block = cb;
+}
+EXPORT_SYMBOL(flow_indr_set_default_block_cb);
+
static struct flow_indr_block_dev *flow_indr_block_dev_get(struct net_device *dev)
{
struct flow_indr_block_dev *indr_dev;
@@ -312,6 +320,10 @@ static struct flow_indr_block_dev *flow_indr_block_dev_get(struct net_device *de
INIT_LIST_HEAD(&indr_dev->cb_list);
indr_dev->dev = dev;
+
+ if (flow_indr_get_default_block)
+ flow_indr_get_default_block(indr_dev);
+
if (rhashtable_insert_fast(&indr_setup_block_ht, &indr_dev->ht_node,
flow_indr_setup_block_ht_params)) {
kfree(indr_dev);
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 359d92f..e64a0d2 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -571,6 +571,35 @@ static void tc_indr_block_ing_cmd(struct net_device *dev, void *block,
tcf_block_setup(t_block, &bo);
}
+static struct tcf_block *tc_dev_ingress_block(struct net_device *dev)
+{
+ const struct Qdisc_class_ops *cops;
+ struct Qdisc *qdisc;
+
+ if (!dev_ingress_queue(dev))
+ return NULL;
+
+ qdisc = dev_ingress_queue(dev)->qdisc_sleeping;
+ if (!qdisc)
+ return NULL;
+
+ cops = qdisc->ops->cl_ops;
+ if (!cops)
+ return NULL;
+
+ if (!cops->tcf_block)
+ return NULL;
+
+ return cops->tcf_block(qdisc, TC_H_MIN_INGRESS, NULL);
+}
+
+static void tc_indr_get_default_block(struct flow_indr_block_dev *indr_dev)
+{
+ indr_dev->block = tc_dev_ingress_block(indr_dev->dev);
+ if (indr_dev->block)
+ indr_dev->cmd_cb = tc_indr_block_ing_cmd;
+}
+
static void tc_indr_block_call(struct tcf_block *block, struct net_device *dev,
struct tcf_block_ext_info *ei,
enum flow_block_command command,
@@ -3143,6 +3172,8 @@ static int __init tc_filter_init(void)
if (err)
goto err_rhash_setup_block_ht;
+ flow_indr_set_default_block_cb(tc_indr_get_default_block);
+
rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_new_tfilter, NULL,
RTNL_FLAG_DOIT_UNLOCKED);
rtnl_register(PF_UNSPEC, RTM_DELTFILTER, tc_del_tfilter, NULL,
--
1.8.3.1
