| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1432179617-26642-5-git-send-email-simon.horman@netronome.com>
Date: Thu, 21 May 2015 12:40:17 +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 v4 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.
This problem was introduced by c4f20321d968 ("rocker: support
prepare-commit transaction model").
Found by inspection.
I do not believe that this change should have any run-time effect.
Acked-by: Scott Feldman <sfeldma@...il.com>
Acked-by: Jiri Pirko <jiri@...nulli.us>
Signed-off-by: Simon Horman <simon.horman@...ronome.com>
---
v4
* Added Jiri Pirko's ack
* Dropped Fixes tag as this should not have any run-time affect and
thus in my opinion is not a bug fix. I would not object to the fixes
tag being reinstated. If so it would be:
Fixes: c4f20321d968 ("rocker: support prepare-commit transaction model")
v3
* No change
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 51744764acd7..701ffc200917 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -3853,7 +3853,6 @@ 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;
@@ -3862,7 +3861,7 @@ 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;
@@ -3872,7 +3871,7 @@ 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;
}
@@ -3896,7 +3895,6 @@ 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;
@@ -3918,7 +3916,7 @@ 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:
@@ -4904,9 +4902,7 @@ 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");
@@ -5154,7 +5150,7 @@ 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;
@@ -5165,9 +5161,7 @@ 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);
}
@@ -5175,7 +5169,7 @@ 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;
@@ -5187,7 +5181,6 @@ 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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists