netdev - [PATCH v2 net-next 4/4] rocker: make rocker_port_internal_vlan_id

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Message-Id: <1432087212-29612-5-git-send-email-simon.horman@netronome.com>
Date:	Wed, 20 May 2015 11:00:12 +0900
From:	Simon Horman <simon.horman@...ronome.com>
To:	Scott Feldman <sfeldma@...il.com>, Jiri Pirko <jiri@...nulli.us>,
	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Simon Horman <simon.horman@...ronome.com>
Subject: [PATCH v2 net-next 4/4] rocker: make rocker_port_internal_vlan_id_{get,put}() non-transactional

The motivation for this is that rocker_port_internal_vlan_id_{get,put} appear
to only partially implement the transaction model: memory allocation
and freeing is transactional, but hash and bitmap manipulation is not.

The latter could be fixed, however, as it is not currently exercised
due to trans always being SWITCHDEV_TRANS_NONE it seems cleaner
to make rocker_port_internal_vlan_id_get non-transactional.

Found by inspection.
I do not believe that this change should have any run-time effect.

Fixes: c4f20321d968 ("rocker: support prepare-commit transaction model")
Acked-by: Scott Feldman <sfeldma@...il.com>
Signed-off-by: Simon Horman <simon.horman@...ronome.com>

---
v2
* Added Scott Feldman's ack
---
 drivers/net/ethernet/rocker/rocker.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index b836dd315e8a..f53c8d87de1c 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -3852,7 +3852,6 @@ rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
 }
 
 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
-					       enum switchdev_trans trans,
 					       int ifindex)
 {
 	struct rocker *rocker = rocker_port->rocker;
@@ -3861,7 +3860,7 @@ static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
 	unsigned long lock_flags;
 	int i;
 
-	entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return 0;
 
@@ -3871,7 +3870,7 @@ static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
 
 	found = rocker_internal_vlan_tbl_find(rocker, ifindex);
 	if (found) {
-		rocker_port_kfree(rocker_port, trans, entry);
+		kfree(entry);
 		goto found;
 	}
 
@@ -3895,7 +3894,6 @@ found:
 }
 
 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
-					     enum switchdev_trans trans,
 					     int ifindex)
 {
 	struct rocker *rocker = rocker_port->rocker;
@@ -3917,7 +3915,7 @@ static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
 		bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
 		clear_bit(bit, rocker->internal_vlan_bitmap);
 		hash_del(&found->entry);
-		rocker_port_kfree(rocker_port, trans, found);
+		kfree(found);
 	}
 
 not_found:
@@ -4903,9 +4901,7 @@ static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
 	rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
 
 	rocker_port->internal_vlan_id =
-		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
-						 dev->ifindex);
+		rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
 	err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
 	if (err) {
 		dev_err(&pdev->dev, "install ig port table failed\n");
@@ -5153,7 +5149,7 @@ static int rocker_port_bridge_join(struct rocker_port *rocker_port,
 {
 	int err;
 
-	rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
+	rocker_port_internal_vlan_id_put(rocker_port,
 					 rocker_port->dev->ifindex);
 
 	rocker_port->bridge_dev = bridge;
@@ -5164,9 +5160,7 @@ static int rocker_port_bridge_join(struct rocker_port *rocker_port,
 	if (err)
 		return err;
 	rocker_port->internal_vlan_id =
-		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
-						 bridge->ifindex);
+		rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
 	return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
 }
 
@@ -5174,7 +5168,7 @@ static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
 {
 	int err;
 
-	rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
+	rocker_port_internal_vlan_id_put(rocker_port,
 					 rocker_port->bridge_dev->ifindex);
 
 	rocker_port->bridge_dev = NULL;
@@ -5186,7 +5180,6 @@ static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
 		return err;
 	rocker_port->internal_vlan_id =
 		rocker_port_internal_vlan_id_get(rocker_port,
-						 SWITCHDEV_TRANS_NONE,
 						 rocker_port->dev->ifindex);
 	err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
 	if (err)
-- 
2.1.4

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