[dpdk-dev] [PATCH 16/18] net/ixgbe: create consistent filter

[Wei Zhao <wei.zhao1@intel.com>]

From: wei zhao1 <wei.zhao1@intel.com>

This patch adds a function to create the flow directory filter.

Signed-off-by: wei zhao1 <wei.zhao1@intel.com>
Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 222 ++++++++++++++++++++++++++++++++++++++-
 drivers/net/ixgbe/ixgbe_ethdev.h |   6 ++
 2 files changed, 227 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 75fadb0..b93c81d 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -450,6 +450,11 @@ int ixgbe_flow_validate(struct rte_eth_dev *dev,
 		const struct rte_flow_item pattern[],
 		const struct rte_flow_action actions[],
 		struct rte_flow_error *error);
+struct ixgbe_flow *ixgbe_flow_create(struct rte_eth_dev *dev,
+		const struct rte_flow_attr *attr,
+		const struct rte_flow_item pattern[],
+		const struct rte_flow_action actions[],
+		struct rte_flow_error *error);
 
 /*
  * Define VF Stats MACRO for Non "cleared on read" register
@@ -837,11 +842,48 @@ static const struct rte_ixgbe_xstats_name_off rte_ixgbevf_stats_strings[] = {
 
 static const struct rte_flow_ops ixgbe_flow_ops = {
 	ixgbe_flow_validate,
+	(void *)ixgbe_flow_create,
 	NULL,
 	NULL,
 	NULL,
-	NULL,
 };
+/* ntuple filter list structure */
+struct ixgbe_ntuple_filter_ele {
+	TAILQ_ENTRY(ixgbe_ntuple_filter_ele) entries;
+	struct rte_eth_ntuple_filter filter_info;
+};
+/* ethertype filter list structure */
+struct ixgbe_ethertype_filter_ele {
+	TAILQ_ENTRY(ixgbe_ethertype_filter_ele) entries;
+	struct rte_eth_ethertype_filter filter_info;
+};
+/* syn filter list structure */
+struct ixgbe_eth_syn_filter_ele {
+	TAILQ_ENTRY(ixgbe_eth_syn_filter_ele) entries;
+	struct rte_eth_syn_filter filter_info;
+};
+/* fdir filter list structure */
+struct ixgbe_fdir_rule_ele {
+	TAILQ_ENTRY(ixgbe_fdir_rule_ele) entries;
+	struct ixgbe_fdir_rule filter_info;
+};
+/* l2_tunnel filter list structure */
+struct ixgbe_eth_l2_tunnel_conf_ele {
+	TAILQ_ENTRY(ixgbe_eth_l2_tunnel_conf_ele) entries;
+	struct rte_eth_l2_tunnel_conf filter_info;
+};
+
+
+TAILQ_HEAD(ixgbe_ntuple_filter_list, ixgbe_ntuple_filter_ele);
+struct ixgbe_ntuple_filter_list filter_ntuple_list;
+TAILQ_HEAD(ixgbe_ethertype_filter_list, ixgbe_ethertype_filter_ele);
+struct ixgbe_ethertype_filter_list filter_ethertype_list;
+TAILQ_HEAD(ixgbe_syn_filter_list, ixgbe_eth_syn_filter_ele);
+struct ixgbe_syn_filter_list filter_syn_list;
+TAILQ_HEAD(ixgbe_fdir_rule_filter_list, ixgbe_fdir_rule_ele);
+struct ixgbe_fdir_rule_filter_list filter_fdir_list;
+TAILQ_HEAD(ixgbe_l2_tunnel_filter_list, ixgbe_eth_l2_tunnel_conf_ele);
+struct ixgbe_l2_tunnel_filter_list filter_l2_tunnel_list;
 
 /**
  * Atomically reads the link status information from global
@@ -1428,6 +1470,11 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev)
 	l2_tn_info->e_tag_en = FALSE;
 	l2_tn_info->e_tag_fwd_en = FALSE;
 	l2_tn_info->e_tag_ether_type = DEFAULT_ETAG_ETYPE;
+	TAILQ_INIT(&filter_ntuple_list);
+	TAILQ_INIT(&filter_ethertype_list);
+	TAILQ_INIT(&filter_syn_list);
+	TAILQ_INIT(&filter_fdir_list);
+	TAILQ_INIT(&filter_l2_tunnel_list);
 
 	return 0;
 }
@@ -9601,6 +9648,179 @@ ixgbe_flow_rule_validate(__rte_unused struct rte_eth_dev *dev,
 
 	return ret;
 }
+/**
+ * Create or destroy a flow rule.
+ * Theorically one rule can match more than one filters.
+ * We will let it use the filter which it hitt first.
+ * So, the sequence matters.
+ */
+struct ixgbe_flow *
+ixgbe_flow_create(struct rte_eth_dev *dev,
+		  const struct rte_flow_attr *attr,
+		  const struct rte_flow_item pattern[],
+		  const struct rte_flow_action actions[],
+		  struct rte_flow_error *error)
+{
+	int ret;
+	struct rte_eth_ntuple_filter ntuple_filter;
+	struct rte_eth_ethertype_filter ethertype_filter;
+	struct rte_eth_syn_filter syn_filter;
+	struct ixgbe_fdir_rule fdir_rule;
+	struct rte_eth_l2_tunnel_conf l2_tn_filter;
+	struct ixgbe_hw_fdir_info *fdir_info =
+		IXGBE_DEV_PRIVATE_TO_FDIR_INFO(dev->data->dev_private);
+	struct ixgbe_flow *flow = NULL;
+	struct ixgbe_ntuple_filter_ele *ntuple_filter_ptr;
+	struct ixgbe_ethertype_filter_ele *ethertype_filter_ptr;
+	struct ixgbe_eth_syn_filter_ele *syn_filter_ptr;
+	struct ixgbe_eth_l2_tunnel_conf_ele *l2_tn_filter_ptr;
+	struct ixgbe_fdir_rule_ele *fdir_rule_ptr;
+
+	flow = rte_zmalloc("ixgbe_flow", sizeof(struct ixgbe_flow), 0);
+	if (!flow) {
+		PMD_DRV_LOG(ERR, "failed to allocate memory");
+		return flow;
+	}
+
+	memset(&ntuple_filter, 0, sizeof(struct rte_eth_ntuple_filter));
+	ret = ixgbe_parse_ntuple_filter(attr, pattern,
+			actions, &ntuple_filter);
+	error->type = ret;
+	if (!ret) {
+
+		ret = ixgbe_add_del_ntuple_filter(dev, &ntuple_filter, TRUE);
+		if (!ret) {
+			ntuple_filter_ptr = rte_zmalloc("ixgbe_ntuple_filter",
+				sizeof(struct ixgbe_ntuple_filter_ele), 0);
+			(void)rte_memcpy(&ntuple_filter_ptr->filter_info,
+				&ntuple_filter,
+				sizeof(struct rte_eth_ntuple_filter));
+			TAILQ_INSERT_TAIL(&filter_ntuple_list,
+				ntuple_filter_ptr, entries);
+			flow->rule = ntuple_filter_ptr;
+			flow->filter_type = RTE_ETH_FILTER_NTUPLE;
+		}
+		return flow;
+	}
+
+	memset(&ethertype_filter, 0, sizeof(struct rte_eth_ethertype_filter));
+	ret = ixgbe_parse_ethertype_filter(attr, pattern,
+				actions, &ethertype_filter);
+	error->type = ret;
+	if (!ret) {
+		ret = ixgbe_add_del_ethertype_filter(dev,
+				&ethertype_filter, TRUE);
+		if (!ret) {
+			ethertype_filter_ptr = rte_zmalloc(
+				"ixgbe_ethertype_filter",
+				sizeof(struct ixgbe_ethertype_filter_ele), 0);
+			(void)rte_memcpy(&ethertype_filter_ptr->filter_info,
+				&ethertype_filter,
+				sizeof(struct rte_eth_ethertype_filter));
+			TAILQ_INSERT_TAIL(&filter_ethertype_list,
+				ethertype_filter_ptr, entries);
+			flow->rule = ethertype_filter_ptr;
+			flow->filter_type = RTE_ETH_FILTER_ETHERTYPE;
+		}
+		return flow;
+	}
+
+	memset(&syn_filter, 0, sizeof(struct rte_eth_syn_filter));
+	ret = cons_parse_syn_filter(attr, pattern, actions, &syn_filter);
+	error->type = ret;
+	if (!ret) {
+		ret = ixgbe_syn_filter_set(dev, &syn_filter, TRUE);
+		if (!ret) {
+			syn_filter_ptr = rte_zmalloc("ixgbe_syn_filter",
+				sizeof(struct ixgbe_eth_syn_filter_ele), 0);
+			(void)rte_memcpy(&syn_filter_ptr->filter_info,
+				&syn_filter,
+				sizeof(struct rte_eth_syn_filter));
+			TAILQ_INSERT_TAIL(&filter_syn_list,
+				syn_filter_ptr,
+				entries);
+			flow->rule = syn_filter_ptr;
+			flow->filter_type = RTE_ETH_FILTER_SYN;
+		}
+		return flow;
+	}
+
+	memset(&fdir_rule, 0, sizeof(struct ixgbe_fdir_rule));
+	ret = ixgbe_parse_fdir_filter(attr, pattern, actions, &fdir_rule);
+	error->type = ret;
+	if (!ret) {
+		/* A mask cannot be deleted. */
+		if (fdir_rule.b_mask) {
+			if (!fdir_info->mask_added) {
+				/* It's the first time the mask is set. */
+				rte_memcpy(&fdir_info->mask,
+					&fdir_rule.mask,
+					sizeof(struct ixgbe_hw_fdir_mask));
+				ret = ixgbe_fdir_set_input_mask(dev);
+				if (ret)
+					return NULL;
+
+				fdir_info->mask_added = TRUE;
+			} else {
+				/**
+				 * Only support one global mask,
+				 * all the masks should be the same.
+				 */
+				ret = memcmp(&fdir_info->mask,
+					&fdir_rule.mask,
+					sizeof(struct ixgbe_hw_fdir_mask));
+				if (ret)
+					return NULL;
+			}
+		}
+
+		if (fdir_rule.b_spec) {
+			ret = ixgbe_fdir_filter_program(dev, &fdir_rule,
+					FALSE, FALSE);
+			if (!ret) {
+				fdir_rule_ptr = rte_zmalloc("ixgbe_fdir_filter",
+					sizeof(struct ixgbe_fdir_rule_ele), 0);
+				(void)rte_memcpy(&fdir_rule_ptr->filter_info,
+					&fdir_rule,
+					sizeof(struct ixgbe_fdir_rule));
+				TAILQ_INSERT_TAIL(&filter_fdir_list,
+					fdir_rule_ptr, entries);
+				flow->rule = fdir_rule_ptr;
+				flow->filter_type = RTE_ETH_FILTER_FDIR;
+
+				return flow;
+			}
+
+			if (ret)
+				return NULL;
+		}
+
+		return NULL;
+	}
+
+	memset(&l2_tn_filter, 0, sizeof(struct rte_eth_l2_tunnel_conf));
+	ret = cons_parse_l2_tn_filter(attr, pattern, actions, &l2_tn_filter);
+	error->type = ret;
+	if (!ret) {
+		ret = ixgbe_dev_l2_tunnel_filter_add(dev, &l2_tn_filter, FALSE);
+		if (!ret) {
+			l2_tn_filter_ptr = rte_zmalloc("ixgbe_l2_tn_filter",
+				sizeof(struct ixgbe_eth_l2_tunnel_conf_ele), 0);
+			(void)rte_memcpy(&l2_tn_filter_ptr->filter_info,
+				&l2_tn_filter,
+				sizeof(struct rte_eth_l2_tunnel_conf));
+			TAILQ_INSERT_TAIL(&filter_l2_tunnel_list,
+				l2_tn_filter_ptr, entries);
+			flow->rule = l2_tn_filter_ptr;
+			flow->filter_type = RTE_ETH_FILTER_L2_TUNNEL;
+
+			return flow;
+		}
+	}
+
+	rte_free(flow);
+	return NULL;
+}
 
 /* Check whether a flow rule can be created on ixgbe. */
 int
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index d23ad67..da0fab5 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -329,6 +329,12 @@ struct ixgbe_l2_tn_info {
 	bool e_tag_ether_type; /* ether type for e-tag */
 };
 
+struct ixgbe_flow {
+	enum rte_filter_type filter_type;
+	void *rule;
+};
+
+
 /*
  * Structure to store private data for each driver instance (for each port).
  */
-- 
2.5.5