[dpdk-dev] [PATCH v5 12/12] net/failsafe: support flow API isolation mode

[Gaetan Rivet <gaetan.rivet@6wind.com>]

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
 drivers/net/failsafe/failsafe_ether.c   | 34 +++++++++++++++++++++++++++++++--
 drivers/net/failsafe/failsafe_flow.c    | 29 ++++++++++++++++++++++++++++
 drivers/net/failsafe/failsafe_private.h |  4 ++++
 3 files changed, 65 insertions(+), 2 deletions(-)

diff --git a/drivers/net/failsafe/failsafe_ether.c b/drivers/net/failsafe/failsafe_ether.c
index 06f950b..fb64111 100644
--- a/drivers/net/failsafe/failsafe_ether.c
+++ b/drivers/net/failsafe/failsafe_ether.c
@@ -74,6 +74,28 @@ fs_flow_complain(struct rte_flow_error *error)
 }
 
 static int
+eth_dev_flow_isolate_set(struct rte_eth_dev *dev,
+			 struct sub_device *sdev)
+{
+	struct rte_flow_error ferror;
+	int ret;
+
+	if (!PRIV(dev)->flow_isolated) {
+		DEBUG("Flow isolation already disabled");
+	} else {
+		DEBUG("Enabling flow isolation");
+		ret = rte_flow_isolate(PORT_ID(sdev),
+				       PRIV(dev)->flow_isolated,
+				       &ferror);
+		if (ret) {
+			fs_flow_complain(&ferror);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static int
 fs_eth_dev_conf_apply(struct rte_eth_dev *dev,
 		struct sub_device *sdev)
 {
@@ -331,9 +353,17 @@ failsafe_eth_dev_state_sync(struct rte_eth_dev *dev)
 	if (PRIV(dev)->state < DEV_ACTIVE)
 		return 0;
 	inactive = 0;
-	FOREACH_SUBDEV(sdev, i, dev)
-		if (sdev->state == DEV_PROBED)
+	FOREACH_SUBDEV(sdev, i, dev) {
+		if (sdev->state == DEV_PROBED) {
 			inactive |= UINT32_C(1) << i;
+			ret = eth_dev_flow_isolate_set(dev, sdev);
+			if (ret) {
+				ERROR("Could not apply configuration to sub_device %d",
+				      i);
+				goto err_remove;
+			}
+		}
+	}
 	ret = dev->dev_ops->dev_configure(dev);
 	if (ret)
 		goto err_remove;
diff --git a/drivers/net/failsafe/failsafe_flow.c b/drivers/net/failsafe/failsafe_flow.c
index d8f59a1..a5598ae 100644
--- a/drivers/net/failsafe/failsafe_flow.c
+++ b/drivers/net/failsafe/failsafe_flow.c
@@ -207,10 +207,39 @@ fs_flow_query(struct rte_eth_dev *dev,
 	return -1;
 }
 
+static int
+fs_flow_isolate(struct rte_eth_dev *dev,
+		int set,
+		struct rte_flow_error *error)
+{
+	struct sub_device *sdev;
+	uint8_t i;
+	int ret;
+
+	FOREACH_SUBDEV(sdev, i, dev) {
+		if (sdev->state < DEV_PROBED)
+			continue;
+		DEBUG("Calling rte_flow_isolate on sub_device %d", i);
+		if (PRIV(dev)->flow_isolated != sdev->flow_isolated)
+			WARN("flow isolation mode of sub_device %d in incoherent state.",
+				i);
+		ret = rte_flow_isolate(PORT_ID(sdev), set, error);
+		if (ret) {
+			ERROR("Operation rte_flow_isolate failed for sub_device %d"
+			      " with error %d", i, ret);
+			return ret;
+		}
+		sdev->flow_isolated = set;
+	}
+	PRIV(dev)->flow_isolated = set;
+	return 0;
+}
+
 const struct rte_flow_ops fs_flow_ops = {
 	.validate = fs_flow_validate,
 	.create = fs_flow_create,
 	.destroy = fs_flow_destroy,
 	.flush = fs_flow_flush,
 	.query = fs_flow_query,
+	.isolate = fs_flow_isolate,
 };
diff --git a/drivers/net/failsafe/failsafe_private.h b/drivers/net/failsafe/failsafe_private.h
index cb8fad2..c029633 100644
--- a/drivers/net/failsafe/failsafe_private.h
+++ b/drivers/net/failsafe/failsafe_private.h
@@ -108,6 +108,8 @@ struct sub_device {
 	struct rte_eth_dev *fs_dev;
 	/* flag calling for recollection */
 	volatile unsigned int remove:1;
+	/* flow isolation state */
+	int flow_isolated:1;
 };
 
 struct fs_priv {
@@ -139,6 +141,8 @@ struct fs_priv {
 	 */
 	enum dev_state state;
 	unsigned int pending_alarm:1; /* An alarm is pending */
+	/* flow isolation state */
+	int flow_isolated:1;
 };
 
 /* MISC */
-- 
2.1.4