netdev - [PATCH net-next 2/7] net: sched: Make the action trap

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Date:   Thu, 8 Apr 2021 15:38:24 +0200
From:   Petr Machata <petrm@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     Petr Machata <petrm@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Ido Schimmel <idosch@...dia.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>
Subject: [PATCH net-next 2/7] net: sched: Make the action trap_fwd offloadable

Add the new flow action and related support so that drivers can offload the
trap_fwd action.

Signed-off-by: Petr Machata <petrm@...dia.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
---
 include/net/flow_offload.h   | 1 +
 include/net/tc_act/tc_gact.h | 5 +++++
 net/sched/cls_api.c          | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index dc5c1e69cd9f..5f35523f12b5 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -121,6 +121,7 @@ enum flow_action_id {
 	FLOW_ACTION_ACCEPT		= 0,
 	FLOW_ACTION_DROP,
 	FLOW_ACTION_TRAP,
+	FLOW_ACTION_TRAP_FWD,
 	FLOW_ACTION_GOTO,
 	FLOW_ACTION_REDIRECT,
 	FLOW_ACTION_MIRRED,
diff --git a/include/net/tc_act/tc_gact.h b/include/net/tc_act/tc_gact.h
index eb8f01c819e6..df9e0a19c826 100644
--- a/include/net/tc_act/tc_gact.h
+++ b/include/net/tc_act/tc_gact.h
@@ -49,6 +49,11 @@ static inline bool is_tcf_gact_trap(const struct tc_action *a)
 	return __is_tcf_gact_act(a, TC_ACT_TRAP, false);
 }
 
+static inline bool is_tcf_gact_trap_fwd(const struct tc_action *a)
+{
+	return __is_tcf_gact_act(a, TC_ACT_TRAP_FWD, false);
+}
+
 static inline bool is_tcf_gact_goto_chain(const struct tc_action *a)
 {
 	return __is_tcf_gact_act(a, TC_ACT_GOTO_CHAIN, true);
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index d3db70865d66..95e37eb50173 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3582,6 +3582,8 @@ int tc_setup_flow_action(struct flow_action *flow_action,
 			entry->id = FLOW_ACTION_DROP;
 		} else if (is_tcf_gact_trap(act)) {
 			entry->id = FLOW_ACTION_TRAP;
+		} else if (is_tcf_gact_trap_fwd(act)) {
+			entry->id = FLOW_ACTION_TRAP_FWD;
 		} else if (is_tcf_gact_goto_chain(act)) {
 			entry->id = FLOW_ACTION_GOTO;
 			entry->chain_index = tcf_gact_goto_chain_index(act);
-- 
2.26.2