[dpdk-dev] [PATCH 2/7] net/sfc: make the flow list engine-agnostic

[Andrew Rybchenko <arybchenko@solarflare.com>]

From: Ivan Malov <ivan.malov@oktetlabs.ru>

A backend which a driver employs to handle flow rules of a given
type depends on the underlying NIC flow engine. The driver in
question in its current state is tailored to support the only
flow engine, VNIC filtering. As the need arises to add support
for transfer rules, the driver has to be reworked so that it
becomes possible to introduce yet another backend.

As a preparation step, make the flow list shared
between different engines.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc.h        |  2 ++
 drivers/net/sfc/sfc_filter.h |  2 --
 drivers/net/sfc/sfc_flow.c   | 20 ++++++++++----------
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index cc5222877..2520cf2b7 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -242,6 +242,8 @@ struct sfc_adapter {
 	struct sfc_port			port;
 	struct sfc_filter		filter;
 
+	struct sfc_flow_list		flow_list;
+
 	unsigned int			rxq_max;
 	unsigned int			txq_max;
 
diff --git a/drivers/net/sfc/sfc_filter.h b/drivers/net/sfc/sfc_filter.h
index 64ab114e0..6a0254813 100644
--- a/drivers/net/sfc/sfc_filter.h
+++ b/drivers/net/sfc/sfc_filter.h
@@ -23,8 +23,6 @@ struct sfc_filter {
 	size_t				supported_match_num;
 	/** Driver cache of supported filter match masks */
 	uint32_t			*supported_match;
-	/** List of flow rules */
-	struct sfc_flow_list		flow_list;
 	/**
 	 * Supports any of ip_proto, remote host or local host
 	 * filters. This flag is used for filter match exceptions
diff --git a/drivers/net/sfc/sfc_flow.c b/drivers/net/sfc/sfc_flow.c
index f285ba552..0826032e0 100644
--- a/drivers/net/sfc/sfc_flow.c
+++ b/drivers/net/sfc/sfc_flow.c
@@ -2317,7 +2317,7 @@ sfc_flow_create(struct rte_eth_dev *dev,
 
 	sfc_adapter_lock(sa);
 
-	TAILQ_INSERT_TAIL(&sa->filter.flow_list, flow, entries);
+	TAILQ_INSERT_TAIL(&sa->flow_list, flow, entries);
 
 	if (sa->state == SFC_ADAPTER_STARTED) {
 		rc = sfc_flow_filter_insert(sa, flow);
@@ -2334,7 +2334,7 @@ sfc_flow_create(struct rte_eth_dev *dev,
 	return flow;
 
 fail_filter_insert:
-	TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
+	TAILQ_REMOVE(&sa->flow_list, flow, entries);
 
 fail_bad_value:
 	rte_free(flow);
@@ -2361,7 +2361,7 @@ sfc_flow_remove(struct sfc_adapter *sa,
 				"Failed to destroy flow rule");
 	}
 
-	TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
+	TAILQ_REMOVE(&sa->flow_list, flow, entries);
 	rte_free(flow);
 
 	return rc;
@@ -2378,7 +2378,7 @@ sfc_flow_destroy(struct rte_eth_dev *dev,
 
 	sfc_adapter_lock(sa);
 
-	TAILQ_FOREACH(flow_ptr, &sa->filter.flow_list, entries) {
+	TAILQ_FOREACH(flow_ptr, &sa->flow_list, entries) {
 		if (flow_ptr == flow)
 			rc = 0;
 	}
@@ -2408,7 +2408,7 @@ sfc_flow_flush(struct rte_eth_dev *dev,
 
 	sfc_adapter_lock(sa);
 
-	while ((flow = TAILQ_FIRST(&sa->filter.flow_list)) != NULL) {
+	while ((flow = TAILQ_FIRST(&sa->flow_list)) != NULL) {
 		rc = sfc_flow_remove(sa, flow, error);
 		if (rc != 0)
 			ret = rc;
@@ -2454,7 +2454,7 @@ sfc_flow_init(struct sfc_adapter *sa)
 {
 	SFC_ASSERT(sfc_adapter_is_locked(sa));
 
-	TAILQ_INIT(&sa->filter.flow_list);
+	TAILQ_INIT(&sa->flow_list);
 }
 
 void
@@ -2464,8 +2464,8 @@ sfc_flow_fini(struct sfc_adapter *sa)
 
 	SFC_ASSERT(sfc_adapter_is_locked(sa));
 
-	while ((flow = TAILQ_FIRST(&sa->filter.flow_list)) != NULL) {
-		TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
+	while ((flow = TAILQ_FIRST(&sa->flow_list)) != NULL) {
+		TAILQ_REMOVE(&sa->flow_list, flow, entries);
 		rte_free(flow);
 	}
 }
@@ -2477,7 +2477,7 @@ sfc_flow_stop(struct sfc_adapter *sa)
 
 	SFC_ASSERT(sfc_adapter_is_locked(sa));
 
-	TAILQ_FOREACH(flow, &sa->filter.flow_list, entries)
+	TAILQ_FOREACH(flow, &sa->flow_list, entries)
 		sfc_flow_filter_remove(sa, flow);
 }
 
@@ -2491,7 +2491,7 @@ sfc_flow_start(struct sfc_adapter *sa)
 
 	SFC_ASSERT(sfc_adapter_is_locked(sa));
 
-	TAILQ_FOREACH(flow, &sa->filter.flow_list, entries) {
+	TAILQ_FOREACH(flow, &sa->flow_list, entries) {
 		rc = sfc_flow_filter_insert(sa, flow);
 		if (rc != 0)
 			goto fail_bad_flow;
-- 
2.17.1