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Message-Id: <1520970647-19587-1-git-send-email-s.mesoraca16@gmail.com>
Date: Tue, 13 Mar 2018 20:50:47 +0100
From: Salvatore Mesoraca <s.mesoraca16@...il.com>
To: linux-kernel@...r.kernel.org
Cc: kernel-hardening@...ts.openwall.com,
netdev@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Kees Cook <keescook@...omium.org>,
Salvatore Mesoraca <s.mesoraca16@...il.com>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH] net: dsa: drop some VLAs in switch.c
dsa_switch's num_ports is currently fixed to DSA_MAX_PORTS. So we avoid
2 VLAs[1] by using DSA_MAX_PORTS instead of ds->num_ports.
[1] https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Salvatore Mesoraca <s.mesoraca16@...il.com>
---
net/dsa/switch.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index b935117..78e9897 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -136,7 +136,7 @@ static int dsa_switch_mdb_add(struct dsa_switch *ds,
{
const struct switchdev_obj_port_mdb *mdb = info->mdb;
struct switchdev_trans *trans = info->trans;
- DECLARE_BITMAP(group, ds->num_ports);
+ DECLARE_BITMAP(group, DSA_MAX_PORTS);
int port;
/* Build a mask of Multicast group members */
@@ -204,7 +204,7 @@ static int dsa_switch_vlan_add(struct dsa_switch *ds,
{
const struct switchdev_obj_port_vlan *vlan = info->vlan;
struct switchdev_trans *trans = info->trans;
- DECLARE_BITMAP(members, ds->num_ports);
+ DECLARE_BITMAP(members, DSA_MAX_PORTS);
int port;
/* Build a mask of VLAN members */
--
1.9.1
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