[PATCH v4 25/25] net/nfp: support IPv6 DSCP flow action

[Chaoyong He]

Add the corresponding logics to support the offload of
set IPv6 DSCP action.

Signed-off-by: Chaoyong He <chaoyong.he at corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund at corigine.com>
---
 doc/guides/nics/features/nfp.ini |  1 +
 drivers/net/nfp/nfp_flow.c       | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/doc/guides/nics/features/nfp.ini b/doc/guides/nics/features/nfp.ini
index d2b4188..e547774 100644
--- a/doc/guides/nics/features/nfp.ini
+++ b/doc/guides/nics/features/nfp.ini
@@ -48,6 +48,7 @@ port_id              = Y
 set_ipv4_dscp        = Y
 set_ipv4_dst         = Y
 set_ipv4_src         = Y
+set_ipv6_dscp        = Y
 set_ipv6_dst         = Y
 set_ipv6_src         = Y
 set_mac_dst          = Y
diff --git a/drivers/net/nfp/nfp_flow.c b/drivers/net/nfp/nfp_flow.c
index 6dff973..ceb61bf 100644
--- a/drivers/net/nfp/nfp_flow.c
+++ b/drivers/net/nfp/nfp_flow.c
@@ -698,6 +698,14 @@ struct nfp_mask_id_entry {
 				ttl_tos_flag = true;
 			}
 			break;
+		case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
+			PMD_DRV_LOG(DEBUG, "RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP detected");
+			if (!tc_hl_flag) {
+				key_ls->act_size +=
+					sizeof(struct nfp_fl_act_set_ipv6_tc_hl_fl);
+				tc_hl_flag = true;
+			}
+			break;
 		default:
 			PMD_DRV_LOG(ERR, "Action type %d not supported.", action->type);
 			return -ENOTSUP;
@@ -1544,6 +1552,29 @@ struct nfp_mask_id_entry {
 	ttl_tos->reserved = 0;
 }
 
+static void
+nfp_flow_action_set_tc(char *act_data,
+		const struct rte_flow_action *action,
+		bool tc_hl_flag)
+{
+	size_t act_size;
+	struct nfp_fl_act_set_ipv6_tc_hl_fl *tc_hl;
+	const struct rte_flow_action_set_dscp *tos_conf;
+
+	if (tc_hl_flag)
+		tc_hl = (struct nfp_fl_act_set_ipv6_tc_hl_fl *)act_data - 1;
+	else
+		tc_hl = (struct nfp_fl_act_set_ipv6_tc_hl_fl *)act_data;
+
+	act_size = sizeof(struct nfp_fl_act_set_ipv6_tc_hl_fl);
+	tc_hl->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV6_TC_HL_FL;
+	tc_hl->head.len_lw = act_size >> NFP_FL_LW_SIZ;
+
+	tos_conf = (const struct rte_flow_action_set_dscp *)action->conf;
+	tc_hl->ipv6_tc = tos_conf->dscp;
+	tc_hl->reserved = 0;
+}
+
 static int
 nfp_flow_compile_action(__rte_unused struct nfp_flower_representor *representor,
 		const struct rte_flow_action actions[],
@@ -1700,6 +1731,14 @@ struct nfp_mask_id_entry {
 				ttl_tos_flag = true;
 			}
 			break;
+		case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
+			PMD_DRV_LOG(DEBUG, "Process RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP");
+			nfp_flow_action_set_tc(position, action, ttl_tos_flag);
+			if (!tc_hl_flag) {
+				position += sizeof(struct nfp_fl_act_set_ipv6_tc_hl_fl);
+				tc_hl_flag = true;
+			}
+			break;
 		default:
 			PMD_DRV_LOG(ERR, "Unsupported action type: %d", action->type);
 			return -ENOTSUP;
-- 
1.8.3.1