netdev - [patch iproute2/net-next] tc: add support for TRAP action

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Date:   Mon,  5 Jun 2017 16:39:45 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jhs@...atatu.com, xiyou.wangcong@...il.com,
        edumazet@...gle.com, alexander.h.duyck@...el.com,
        stephen@...workplumber.org, daniel@...earbox.net,
        mlxsw@...lanox.com
Subject: [patch iproute2/net-next] tc: add support for TRAP action

From: Jiri Pirko <jiri@...lanox.com>

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 include/linux/pkt_cls.h | 5 +++++
 tc/tc_util.c            | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h
index c6e8cf5..477ed05 100644
--- a/include/linux/pkt_cls.h
+++ b/include/linux/pkt_cls.h
@@ -37,6 +37,11 @@ enum {
 #define TC_ACT_QUEUED		5
 #define TC_ACT_REPEAT		6
 #define TC_ACT_REDIRECT		7
+#define TC_ACT_TRAP		8 /* For hw path, this means "trap to cpu",
+				   * for sw path, this is equivalent of
+				   * TC_ACT_STOLEN - drop the skb and act
+				   * like everything is allright.
+				   */
 
 /* There is a special kind of actions called "extended actions",
  * which need a value parameter. These have a local opcode located in
diff --git a/tc/tc_util.c b/tc/tc_util.c
index 4f7283d..5a0f96a 100644
--- a/tc/tc_util.c
+++ b/tc/tc_util.c
@@ -430,6 +430,8 @@ static const char *action_n2a(int action)
 		return "pipe";
 	case TC_ACT_STOLEN:
 		return "stolen";
+	case TC_ACT_TRAP:
+		return "trap";
 	default:
 		snprintf(buf, 64, "%d", action);
 		buf[63] = '\0';
@@ -462,6 +464,7 @@ static int action_a2n(char *arg, int *result, bool allow_num)
 		{"reclassify", TC_ACT_RECLASSIFY},
 		{"pipe", TC_ACT_PIPE},
 		{"goto", TC_ACT_GOTO_CHAIN},
+		{"trap", TC_ACT_TRAP},
 		{ NULL },
 	}, *iter;
 
-- 
2.9.3