In order to support hardware offloading, an action should implment the
new offload_init() callback.
During filter initialization, offload_init() will be called to add
the action description to the actions object that will be used by the
filter to configure the hardware.
Signed-off-by: Amir Vadai <a...@vadai.me>
---
include/net/act_api.h | 3 +++
include/net/pkt_cls.h | 2 ++
net/sched/cls_api.c | 27 +++++++++++++++++++++++++++
3 files changed, 32 insertions(+)
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 9d446f13..fcabe93 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -7,6 +7,7 @@
#include <net/sch_generic.h>
#include <net/pkt_sched.h>
+#include <net/switchdev.h>
struct tcf_common {
struct hlist_node tcfc_head;
@@ -108,6 +109,8 @@ struct tc_action_ops {
struct nlattr *est, struct tc_action *act, int ovr,
int bind);
int (*walk)(struct sk_buff *, struct netlink_callback *, int,
struct tc_action *);
+ int (*offload_init)(struct tc_action *,
+ struct switchdev_obj_port_flow_act *);
};
int tcf_hash_search(struct tc_action *a, u32 index);
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index bc49967..7eb8ee9 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -130,6 +130,8 @@ tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
return 0;
}
+int tcf_exts_offload_init(struct tcf_exts *e,
+ struct switchdev_obj_port_flow_act *actions);
int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
struct nlattr **tb, struct nlattr *rate_tlv,
struct tcf_exts *exts, bool ovr);
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index a75864d..d675c31 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -29,6 +29,7 @@
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <net/pkt_cls.h>
+#include <net/switchdev.h>
/* The list of all installed classifier types */
static LIST_HEAD(tcf_proto_base);
@@ -551,6 +552,32 @@ int tcf_exts_validate(struct net *net, struct tcf_proto
*tp, struct nlattr **tb,
}
EXPORT_SYMBOL(tcf_exts_validate);
+int tcf_exts_offload_init(struct tcf_exts *e,
+ struct switchdev_obj_port_flow_act *actions)
+{
+#ifdef CONFIG_NET_CLS_ACT
+ struct tc_action *act;
+ int err = 0;
+
+ list_for_each_entry(act, &e->actions, list) {
+ if (!act->ops->offload_init) {
+ pr_err("Action %s doesn't have offload support\n",
+ act->ops->kind);
+ err = -EINVAL;
+ break;
+ }
+ err = act->ops->offload_init(act, actions);
+ if (err)
+ break;
+ }
+
+ return err;
+#else
+ return -EOPNOTSUPP;
+#endif
+}
+EXPORT_SYMBOL(tcf_exts_offload_init);
+
void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst,
struct tcf_exts *src)
{
--
2.7.0
