netdev - [PATCH net-next 02/10] net: sched: add skbedit of ptype action to hardware IR

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Date:   Sun,  4 Aug 2019 16:09:04 +0100
From:   John Hurley <john.hurley@...ronome.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, simon.horman@...ronome.com,
        jakub.kicinski@...ronome.com, oss-drivers@...ronome.com,
        John Hurley <john.hurley@...ronome.com>
Subject: [PATCH net-next 02/10] net: sched: add skbedit of ptype action to hardware IR

TC rules can impliment skbedit actions. Currently actions that modify the
skb mark are passed to offloading drivers via the hardware intermediate
representation in the flow_offload API.

Extend this to include skbedit actions that modify the packet type of the
skb. Such actions may be used to set the ptype to HOST when redirecting a
packet to ingress.

Signed-off-by: John Hurley <john.hurley@...ronome.com>
Reviewed-by: Simon Horman <simon.horman@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 include/net/flow_offload.h | 2 ++
 net/sched/cls_api.c        | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index 00b9aab..04c29f5 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -126,6 +126,7 @@ enum flow_action_id {
 	FLOW_ACTION_ADD,
 	FLOW_ACTION_CSUM,
 	FLOW_ACTION_MARK,
+	FLOW_ACTION_PTYPE,
 	FLOW_ACTION_WAKE,
 	FLOW_ACTION_QUEUE,
 	FLOW_ACTION_SAMPLE,
@@ -168,6 +169,7 @@ struct flow_action_entry {
 		const struct ip_tunnel_info *tunnel;	/* FLOW_ACTION_TUNNEL_ENCAP */
 		u32			csum_flags;	/* FLOW_ACTION_CSUM */
 		u32			mark;		/* FLOW_ACTION_MARK */
+		u16                     ptype;          /* FLOW_ACTION_PTYPE */
 		struct {				/* FLOW_ACTION_QUEUE */
 			u32		ctx;
 			u32		index;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 3565d9a..ae73d37 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3294,6 +3294,9 @@ int tc_setup_flow_action(struct flow_action *flow_action,
 			default:
 				goto err_out;
 			}
+		} else if (is_tcf_skbedit_ptype(act)) {
+			entry->id = FLOW_ACTION_PTYPE;
+			entry->ptype = tcf_skbedit_ptype(act);
 		} else {
 			goto err_out;
 		}
-- 
2.7.4