From: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Date: Tue, 9 Oct 2018 13:00:36 +0000 (+0100)
Subject: pipeline: add table action for packet tag
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a63e06d7068897171645043fbe8ee4c6264d9d3a;p=dpdk.git

pipeline: add table action for packet tag

This patch introduces the packet tag table action which attaches
a 32-bit value (the tag) to the current input packet. The tag is
read from the current table entry. The tag is written into the
mbuf->hash.fdir.hi and the flags PKT_RX_FDIR and PKT_RX_FDIR_ID
are set into mbuf->ol_flags.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---

diff --git a/lib/librte_pipeline/rte_table_action.c b/lib/librte_pipeline/rte_table_action.c
index edb3340215..fb7eaf9180 100644
--- a/lib/librte_pipeline/rte_table_action.c
+++ b/lib/librte_pipeline/rte_table_action.c
@@ -2011,6 +2011,50 @@ pkt_work_sym_crypto(struct rte_mbuf *mbuf, struct sym_crypto_data *data,
 	return 0;
 }
 
+/**
+ * RTE_TABLE_ACTION_TAG
+ */
+struct tag_data {
+	uint32_t tag;
+} __attribute__((__packed__));
+
+static int
+tag_apply(struct tag_data *data,
+	struct rte_table_action_tag_params *p)
+{
+	data->tag = p->tag;
+	return 0;
+}
+
+static __rte_always_inline void
+pkt_work_tag(struct rte_mbuf *mbuf,
+	struct tag_data *data)
+{
+	mbuf->hash.fdir.hi = data->tag;
+	mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+}
+
+static __rte_always_inline void
+pkt4_work_tag(struct rte_mbuf *mbuf0,
+	struct rte_mbuf *mbuf1,
+	struct rte_mbuf *mbuf2,
+	struct rte_mbuf *mbuf3,
+	struct tag_data *data0,
+	struct tag_data *data1,
+	struct tag_data *data2,
+	struct tag_data *data3)
+{
+	mbuf0->hash.fdir.hi = data0->tag;
+	mbuf1->hash.fdir.hi = data1->tag;
+	mbuf2->hash.fdir.hi = data2->tag;
+	mbuf3->hash.fdir.hi = data3->tag;
+
+	mbuf0->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+	mbuf1->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+	mbuf2->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+	mbuf3->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+}
+
 /**
  * Action profile
  */
@@ -2028,6 +2072,7 @@ action_valid(enum rte_table_action_type action)
 	case RTE_TABLE_ACTION_STATS:
 	case RTE_TABLE_ACTION_TIME:
 	case RTE_TABLE_ACTION_SYM_CRYPTO:
+	case RTE_TABLE_ACTION_TAG:
 		return 1;
 	default:
 		return 0;
@@ -2162,6 +2207,9 @@ action_data_size(enum rte_table_action_type action,
 	case RTE_TABLE_ACTION_SYM_CRYPTO:
 		return (sizeof(struct sym_crypto_data));
 
+	case RTE_TABLE_ACTION_TAG:
+		return sizeof(struct tag_data);
+
 	default:
 		return 0;
 	}
@@ -2419,6 +2467,10 @@ rte_table_action_apply(struct rte_table_action *action,
 				&action->cfg.sym_crypto,
 				action_params);
 
+	case RTE_TABLE_ACTION_TAG:
+		return tag_apply(action_data,
+			action_params);
+
 	default:
 		return -EINVAL;
 	}
@@ -2803,6 +2855,14 @@ pkt_work(struct rte_mbuf *mbuf,
 				ip_offset);
 	}
 
+	if (cfg->action_mask & (1LLU << RTE_TABLE_ACTION_TAG)) {
+		void *data = action_data_get(table_entry,
+			action,
+			RTE_TABLE_ACTION_TAG);
+
+		pkt_work_tag(mbuf, data);
+	}
+
 	return drop_mask;
 }
 
@@ -3111,6 +3171,24 @@ pkt4_work(struct rte_mbuf **mbufs,
 				ip_offset);
 	}
 
+	if (cfg->action_mask & (1LLU << RTE_TABLE_ACTION_TAG)) {
+		void *data0 = action_data_get(table_entry0,
+			action,
+			RTE_TABLE_ACTION_TAG);
+		void *data1 = action_data_get(table_entry1,
+			action,
+			RTE_TABLE_ACTION_TAG);
+		void *data2 = action_data_get(table_entry2,
+			action,
+			RTE_TABLE_ACTION_TAG);
+		void *data3 = action_data_get(table_entry3,
+			action,
+			RTE_TABLE_ACTION_TAG);
+
+		pkt4_work_tag(mbuf0, mbuf1, mbuf2, mbuf3,
+			data0, data1, data2, data3);
+	}
+
 	return drop_mask0 |
 		(drop_mask1 << 1) |
 		(drop_mask2 << 2) |
diff --git a/lib/librte_pipeline/rte_table_action.h b/lib/librte_pipeline/rte_table_action.h
index e8a7b66f8e..5dbb1478ab 100644
--- a/lib/librte_pipeline/rte_table_action.h
+++ b/lib/librte_pipeline/rte_table_action.h
@@ -96,6 +96,9 @@ enum rte_table_action_type {
 
 	/** Crypto. */
 	RTE_TABLE_ACTION_SYM_CRYPTO,
+
+	/** Tag. */
+	RTE_TABLE_ACTION_TAG,
 };
 
 /** Common action configuration (per table action profile). */
@@ -770,6 +773,15 @@ struct rte_table_action_sym_crypto_params {
 	};
 };
 
+/**
+ * RTE_TABLE_ACTION_TAG
+ */
+/** Tag action parameters (per table rule). */
+struct rte_table_action_tag_params {
+	/** Tag to be attached to the input packet. */
+	uint32_t tag;
+};
+
 /**
  * Table action profile.
  */