| 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
| ||
|
Date: Mon, 11 Apr 2016 21:50:04 +0200
From: Andrew Lunn <andrew@...n.ch>
To: David Miller <davem@...emloft.net>
Cc: Florian Fainelli <f.fainelli@...il.com>,
netdev <netdev@...r.kernel.org>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next 2/7] net: dsa: Have the switch driver allocate there own private memory
Now the switch devices have a dev pointer, make use of it for allocating
the drivers private data structures using a devm_kzalloc().
Signed-off-by: Andrew Lunn <andrew@...n.ch>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
---
v2: Added missing assignment of priv to ds->priv.
---
drivers/net/dsa/bcm_sf2.c | 10 ++++++++--
drivers/net/dsa/mv88e6060.c | 3 ++-
drivers/net/dsa/mv88e6123.c | 17 ++++++++++++++---
drivers/net/dsa/mv88e6131.c | 17 ++++++++++++++---
drivers/net/dsa/mv88e6171.c | 17 ++++++++++++++---
drivers/net/dsa/mv88e6352.c | 17 ++++++++++++++---
drivers/net/dsa/mv88e6xxx.c | 6 ++++--
drivers/net/dsa/mv88e6xxx.h | 3 +++
include/net/dsa.h | 10 ++++++++--
net/dsa/dsa.c | 8 +++++---
10 files changed, 86 insertions(+), 22 deletions(-)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 18a79579141f..7d62802a66d5 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -136,8 +136,15 @@ static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds)
}
static char *bcm_sf2_sw_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **_priv)
{
+ struct bcm_sf2_priv *priv;
+
+ priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return NULL;
+ *_priv = priv;
+
return "Broadcom Starfighter 2";
}
@@ -1363,7 +1370,6 @@ static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
static struct dsa_switch_driver bcm_sf2_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_BRCM,
- .priv_size = sizeof(struct bcm_sf2_priv),
.probe = bcm_sf2_sw_probe,
.setup = bcm_sf2_sw_setup,
.set_addr = bcm_sf2_sw_set_addr,
diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
index 34d0f9fe19db..41195f1417f1 100644
--- a/drivers/net/dsa/mv88e6060.c
+++ b/drivers/net/dsa/mv88e6060.c
@@ -58,11 +58,12 @@ static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val)
})
static char *mv88e6060_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **priv)
{
struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
int ret;
+ *priv = NULL;
if (bus == NULL)
return NULL;
diff --git a/drivers/net/dsa/mv88e6123.c b/drivers/net/dsa/mv88e6123.c
index ede4c6f0b31a..bcab3ef22448 100644
--- a/drivers/net/dsa/mv88e6123.c
+++ b/drivers/net/dsa/mv88e6123.c
@@ -30,10 +30,20 @@ static const struct mv88e6xxx_switch_id mv88e6123_table[] = {
};
static char *mv88e6123_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **priv)
{
- return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6123_table,
+ struct mv88e6xxx_priv_state *ps;
+ char *name;
+
+ name = mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6123_table,
ARRAY_SIZE(mv88e6123_table));
+ if (name) {
+ ps = devm_kzalloc(dsa_dev, sizeof(*ps), GFP_KERNEL);
+ if (!ps)
+ return NULL;
+ *priv = ps;
+ }
+ return name;
}
static int mv88e6123_setup_global(struct dsa_switch *ds)
@@ -74,6 +84,8 @@ static int mv88e6123_setup(struct dsa_switch *ds)
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
+ ps->ds = ds;
+
ret = mv88e6xxx_setup_common(ds);
if (ret < 0)
return ret;
@@ -103,7 +115,6 @@ static int mv88e6123_setup(struct dsa_switch *ds)
struct dsa_switch_driver mv88e6123_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_EDSA,
- .priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6123_probe,
.setup = mv88e6123_setup,
.set_addr = mv88e6xxx_set_addr_indirect,
diff --git a/drivers/net/dsa/mv88e6131.c b/drivers/net/dsa/mv88e6131.c
index bfadfd2cbb8d..b9f9b009f65a 100644
--- a/drivers/net/dsa/mv88e6131.c
+++ b/drivers/net/dsa/mv88e6131.c
@@ -26,10 +26,20 @@ static const struct mv88e6xxx_switch_id mv88e6131_table[] = {
};
static char *mv88e6131_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **priv)
{
- return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6131_table,
+ struct mv88e6xxx_priv_state *ps;
+ char *name;
+
+ name = mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6131_table,
ARRAY_SIZE(mv88e6131_table));
+ if (name) {
+ ps = devm_kzalloc(dsa_dev, sizeof(*ps), GFP_KERNEL);
+ if (!ps)
+ return NULL;
+ *priv = ps;
+ }
+ return name;
}
static int mv88e6131_setup_global(struct dsa_switch *ds)
@@ -92,6 +102,8 @@ static int mv88e6131_setup(struct dsa_switch *ds)
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
+ ps->ds = ds;
+
ret = mv88e6xxx_setup_common(ds);
if (ret < 0)
return ret;
@@ -160,7 +172,6 @@ mv88e6131_phy_write(struct dsa_switch *ds,
struct dsa_switch_driver mv88e6131_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_DSA,
- .priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6131_probe,
.setup = mv88e6131_setup,
.set_addr = mv88e6xxx_set_addr_direct,
diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index fb35d3ac1644..15200928cecc 100644
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -25,10 +25,20 @@ static const struct mv88e6xxx_switch_id mv88e6171_table[] = {
};
static char *mv88e6171_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **priv)
{
- return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6171_table,
+ struct mv88e6xxx_priv_state *ps;
+ char *name;
+
+ name = mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6171_table,
ARRAY_SIZE(mv88e6171_table));
+ if (name) {
+ ps = devm_kzalloc(dsa_dev, sizeof(*ps), GFP_KERNEL);
+ if (!ps)
+ return NULL;
+ *priv = ps;
+ }
+ return name;
}
static int mv88e6171_setup_global(struct dsa_switch *ds)
@@ -70,6 +80,8 @@ static int mv88e6171_setup(struct dsa_switch *ds)
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
+ ps->ds = ds;
+
ret = mv88e6xxx_setup_common(ds);
if (ret < 0)
return ret;
@@ -89,7 +101,6 @@ static int mv88e6171_setup(struct dsa_switch *ds)
struct dsa_switch_driver mv88e6171_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_EDSA,
- .priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6171_probe,
.setup = mv88e6171_setup,
.set_addr = mv88e6xxx_set_addr_indirect,
diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c
index 577ab2cfa944..7081a78a67e1 100644
--- a/drivers/net/dsa/mv88e6352.c
+++ b/drivers/net/dsa/mv88e6352.c
@@ -38,10 +38,20 @@ static const struct mv88e6xxx_switch_id mv88e6352_table[] = {
};
static char *mv88e6352_probe(struct device *dsa_dev, struct device *host_dev,
- int sw_addr)
+ int sw_addr, void **priv)
{
- return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6352_table,
+ struct mv88e6xxx_priv_state *ps;
+ char *name;
+
+ name = mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6352_table,
ARRAY_SIZE(mv88e6352_table));
+ if (name) {
+ ps = devm_kzalloc(dsa_dev, sizeof(*ps), GFP_KERNEL);
+ if (!ps)
+ return NULL;
+ *priv = ps;
+ }
+ return name;
}
static int mv88e6352_setup_global(struct dsa_switch *ds)
@@ -82,6 +92,8 @@ static int mv88e6352_setup(struct dsa_switch *ds)
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
+ ps->ds = ds;
+
ret = mv88e6xxx_setup_common(ds);
if (ret < 0)
return ret;
@@ -303,7 +315,6 @@ static int mv88e6352_set_eeprom(struct dsa_switch *ds,
struct dsa_switch_driver mv88e6352_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_EDSA,
- .priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6352_probe,
.setup = mv88e6352_setup,
.set_addr = mv88e6xxx_set_addr_indirect,
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 62320fca6712..085fc4a49eb2 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -281,7 +281,7 @@ static void mv88e6xxx_ppu_reenable_work(struct work_struct *ugly)
ps = container_of(ugly, struct mv88e6xxx_priv_state, ppu_work);
if (mutex_trylock(&ps->ppu_mutex)) {
- struct dsa_switch *ds = ((struct dsa_switch *)ps) - 1;
+ struct dsa_switch *ds = ps->ds;
if (mv88e6xxx_ppu_enable(ds) == 0)
ps->ppu_disabled = 0;
@@ -2322,7 +2322,7 @@ static void mv88e6xxx_bridge_work(struct work_struct *work)
int port;
ps = container_of(work, struct mv88e6xxx_priv_state, bridge_work);
- ds = ((struct dsa_switch *)ps) - 1;
+ ds = ps->ds;
mutex_lock(&ps->smi_mutex);
@@ -2670,6 +2670,8 @@ int mv88e6xxx_setup_common(struct dsa_switch *ds)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ ps->ds = ds;
+
mutex_init(&ps->smi_mutex);
ps->id = REG_READ(REG_PORT(0), PORT_SWITCH_ID) & 0xfff0;
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 236bcaa606e7..0322e3e0e7d9 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -397,6 +397,9 @@ struct mv88e6xxx_priv_port {
};
struct mv88e6xxx_priv_state {
+ /* The dsa_switch this private structure is related to */
+ struct dsa_switch *ds;
+
/* When using multi-chip addressing, this mutex protects
* access to the indirect access registers. (In single-chip
* mode, this mutex is effectively useless.)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 0f9f6f38f255..7bc7bd9b5ded 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -130,6 +130,12 @@ struct dsa_switch {
int index;
/*
+ * Give the switch driver somewhere to hang its private data
+ * structure.
+ */
+ void *priv;
+
+ /*
* Tagging protocol understood by this switch
*/
enum dsa_tag_protocol tag_protocol;
@@ -213,7 +219,7 @@ struct dsa_switch_driver {
* Probing and setup.
*/
char *(*probe)(struct device *dsa_dev, struct device *host_dev,
- int sw_addr);
+ int sw_addr, void **priv);
int (*setup)(struct dsa_switch *ds);
int (*set_addr)(struct dsa_switch *ds, u8 *addr);
u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
@@ -342,7 +348,7 @@ struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
static inline void *ds_to_priv(struct dsa_switch *ds)
{
- return (void *)(ds + 1);
+ return ds->priv;
}
static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index c06275311cb2..7ef8a92a9e39 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL_GPL(unregister_switch_driver);
static struct dsa_switch_driver *
dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
- char **_name)
+ char **_name, void **priv)
{
struct dsa_switch_driver *ret;
struct list_head *list;
@@ -67,7 +67,7 @@ dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
drv = list_entry(list, struct dsa_switch_driver, list);
- name = drv->probe(parent, host_dev, sw_addr);
+ name = drv->probe(parent, host_dev, sw_addr, priv);
if (name != NULL) {
ret = drv;
break;
@@ -384,11 +384,12 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
struct dsa_switch *ds;
int ret;
char *name;
+ void *priv;
/*
* Probe for switch model.
*/
- drv = dsa_switch_probe(parent, host_dev, pd->sw_addr, &name);
+ drv = dsa_switch_probe(parent, host_dev, pd->sw_addr, &name, &priv);
if (drv == NULL) {
netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n",
index);
@@ -409,6 +410,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
ds->index = index;
ds->pd = pd;
ds->drv = drv;
+ ds->priv = priv;
ds->tag_protocol = drv->tag_protocol;
ds->master_dev = host_dev;
--
2.7.0
Powered by blists - more mailing lists