Mac80211_hwsim: Support to configfs operations for create a new radio
Signed-off-by: Igor Trindade Oliveira ([email protected])
--- wireless-testing/drivers/net/wireless/mac80211_hwsim.c.orig 2008-12=
-01 10:43:42.000000000 -0400
+++ wireless-testing/drivers/net/wireless/mac80211_hwsim.c 2008-12-02 0=
6:21:56.000000000 -0400
@@ -21,15 +21,13 @@
#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
-#include <linux/debugfs.h>
+#include <linux/configfs.h>
=20
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211=
");
MODULE_LICENSE("GPL");
=20
-static int radios =3D 2;
-module_param(radios, int, 0444);
-MODULE_PARM_DESC(radios, "Number of simulated radios");
+static int radios;
=20
struct hwsim_vif_priv {
u32 magic;
@@ -140,10 +138,15 @@ struct mac80211_hwsim_data {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
} ps;
bool ps_poll_pending;
- struct dentry *debugfs;
- struct dentry *debugfs_ps;
+ struct config_item item;
};
=20
+struct mac80211_hwsim_attr {
+ struct configfs_attribute attr;
+ ssize_t(*show) (struct mac80211_hwsim_data *hwsim, char *buf);
+ ssize_t(*store) (struct mac80211_hwsim_data *hwsim,
+ const char *buf, ssize_t count);
+};
=20
struct hwsim_radiotap_hdr {
struct ieee80211_radiotap_header hdr;
@@ -576,8 +579,6 @@ static void mac80211_hwsim_free(void)
spin_unlock_bh(&hwsim_radio_lock);
=20
list_for_each_entry(data, &tmplist, list) {
- debugfs_remove(data->debugfs_ps);
- debugfs_remove(data->debugfs);
ieee80211_unregister_hw(data->hw);
device_unregister(data->dev);
ieee80211_free_hw(data->hw);
@@ -683,150 +684,266 @@ static void hwsim_send_nullfunc_no_ps(vo
hwsim_send_nullfunc(data, mac, vif, 0);
}
=20
+/*
+ *ConfigFs operations
+ */
=20
-static int hwsim_fops_ps_read(void *dat, u64 *val)
+static struct mac80211_hwsim_data *to_target(struct config_item *item)
{
- struct mac80211_hwsim_data *data =3D dat;
- *val =3D data->ps;
- return 0;
+ return item ?
+ container_of(item, struct mac80211_hwsim_data, item) : NULL;
}
=20
-static int hwsim_fops_ps_write(void *dat, u64 val)
+static int show_ps_status(struct mac80211_hwsim_data *hwsim, char *buf=
)
{
- struct mac80211_hwsim_data *data =3D dat;
+ return snprintf(buf, PAGE_SIZE, "%d\n", hwsim->ps);
+}
+
+static int store_ps_status(struct mac80211_hwsim_data *hwsim,
+ const char *buf, ssize_t count)
+{
+ unsigned long int ps;
enum ps_mode old_ps;
+ int ret;
+
+ ret =3D strict_strtoul(buf, 10, &ps);
=20
- if (val !=3D PS_DISABLED && val !=3D PS_ENABLED && val !=3D PS_AUTO_P=
OLL &&
- val !=3D PS_MANUAL_POLL)
+ if (ret)
+ return ret;
+
+ if (ps !=3D PS_DISABLED && ps !=3D PS_ENABLED && ps !=3D PS_AUTO_POLL=
&&
+ ps !=3D PS_MANUAL_POLL)
return -EINVAL;
=20
- old_ps =3D data->ps;
- data->ps =3D val;
+ old_ps =3D hwsim->ps;
+ hwsim->ps =3D ps;
=20
- if (val =3D=3D PS_MANUAL_POLL) {
- ieee80211_iterate_active_interfaces(data->hw,
- hwsim_send_ps_poll, data);
- data->ps_poll_pending =3D true;
- } else if (old_ps =3D=3D PS_DISABLED && val !=3D PS_DISABLED) {
- ieee80211_iterate_active_interfaces(data->hw,
+ if (ps =3D=3D PS_MANUAL_POLL) {
+ ieee80211_iterate_active_interfaces(hwsim->hw,
+ hwsim_send_ps_poll, hwsim);
+ hwsim->ps_poll_pending =3D true;
+ } else if (old_ps =3D=3D PS_DISABLED && ps !=3D PS_DISABLED) {
+ ieee80211_iterate_active_interfaces(hwsim->hw,
hwsim_send_nullfunc_ps,
- data);
- } else if (old_ps !=3D PS_DISABLED && val =3D=3D PS_DISABLED) {
- ieee80211_iterate_active_interfaces(data->hw,
+ hwsim);
+ } else if (old_ps !=3D PS_DISABLED && ps =3D=3D PS_DISABLED) {
+ ieee80211_iterate_active_interfaces(hwsim->hw,
hwsim_send_nullfunc_no_ps,
- data);
+ hwsim);
}
=20
- return 0;
+ return strnlen(buf, count);
}
=20
-DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_=
ps_write,
- "%llu\n");
+/*
+ *ConfigFS attribute declaration
+ */
+#define MAC80211_HWSIM_ATTR_RW(_name, _show, _store) =
\
+static struct mac80211_hwsim_attr mac80211_hwsim_##_name =3D =
\
+ __CONFIGFS_ATTR(_name, S_IRUGO | S_IWUSR, _show, _store)
=20
+MAC80211_HWSIM_ATTR_RW(ps, show_ps_status, store_ps_status);
=20
-static int __init init_mac80211_hwsim(void)
+static struct configfs_atribbute *mac80211_hwsim_attrs[] =3D {
+ &mac80211_hwsim_ps.attr,
+ NULL,
+};
+
+/*
+ *ConfigFS: Item operations
+ */
+
+static void mac80211_hwsim_release(struct config_item *item)
+{
+ kfree(to_target(item));
+}
+
+/*
+ * now we just have one attribute with this function we can
+ * add new attributes in mac80211_hwsim_attrs and do not change
+ * others parts of the code
+ */
+
+static ssize_t mac80211_hwsim_attr_show(struct config_item *item,
+ struct configfs_attribute *attr,
+ char *buf)
{
- int i, err =3D 0;
+ struct mac80211_hwsim_data *data =3D to_target(item);
+ struct mac80211_hwsim_attr *hwsim_attr =3D
+ container_of(attr, struct mac80211_hwsim_attr, attr);
+
+ return hwsim_attr->show ? hwsim_attr->show(data, buf) : EINVAL;
+}
+
+static ssize_t mac80211_hwsim_attr_store(struct config_item *item,
+ struct configfs_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct mac80211_hwsim_data *data =3D to_target(item);
+ struct mac80211_hwsim_attr *hwsim_attr =3D
+ container_of(attr, struct mac80211_hwsim_attr, attr);
+
+ return hwsim_attr->store ? hwsim_attr->store(data, buf, count) : EINV=
AL;
+}
+
+static struct configfs_item_operations mac80211_hwsim_item_ops =3D {
+ .release =3D mac80211_hwsim_release,
+ .show_attribute =3D mac80211_hwsim_attr_show,
+ .store_attribute =3D mac80211_hwsim_attr_store,
+};
+
+static struct config_item_type mac80211_hwsim_type =3D {
+ .ct_attrs =3D mac80211_hwsim_attrs,
+ .ct_item_ops =3D &mac80211_hwsim_item_ops,
+ .ct_owner =3D THIS_MODULE,
+};
+
+
+static struct config_item *make_mac80211_hwsim(struct config_group *gr=
oup,
+ const char *name)
+{
+ int err =3D 0;
u8 addr[ETH_ALEN];
struct mac80211_hwsim_data *data;
struct ieee80211_hw *hw;
DECLARE_MAC_BUF(mac);
=20
- if (radios < 1 || radios > 100)
- return -EINVAL;
-
- spin_lock_init(&hwsim_radio_lock);
- INIT_LIST_HEAD(&hwsim_radios);
-
- hwsim_class =3D class_create(THIS_MODULE, "mac80211_hwsim");
- if (IS_ERR(hwsim_class))
- return PTR_ERR(hwsim_class);
-
memset(addr, 0, ETH_ALEN);
addr[0] =3D 0x02;
=20
- for (i =3D 0; i < radios; i++) {
- printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
- i);
- hw =3D ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
- if (!hw) {
- printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
- "failed\n");
- err =3D -ENOMEM;
+ printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
+ radios);
+ hw =3D ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
+ if (!hw) {
+ printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
+ "failed\n");
+ err =3D -ENOMEM;
goto failed;
- }
- data =3D hw->priv;
- data->hw =3D hw;
+ }
+ data =3D hw->priv;
+ data->hw =3D hw;
=20
- data->dev =3D device_create(hwsim_class, NULL, 0, hw,
- "hwsim%d", i);
- if (IS_ERR(data->dev)) {
- printk(KERN_DEBUG
- "mac80211_hwsim: device_create "
- "failed (%ld)\n", PTR_ERR(data->dev));
- err =3D -ENOMEM;
- goto failed_drvdata;
- }
- data->dev->driver =3D &mac80211_hwsim_driver;
+ data->dev =3D device_create(hwsim_class, NULL, 0, hw,
+ "hwsim%d", radios);
+ if (IS_ERR(data->dev)) {
+ printk(KERN_DEBUG
+ "mac80211_hwsim: device_create "
+ "failed (%ld)\n", PTR_ERR(data->dev));
+ err =3D -ENOMEM;
+ goto failed_drvdata;
+ }
+ data->dev->driver =3D &mac80211_hwsim_driver;
+
+ SET_IEEE80211_DEV(hw, data->dev);
+ addr[3] =3D radios >> 8;
+ addr[4] =3D radios;
+ SET_IEEE80211_PERM_ADDR(hw, addr);
+
+ hw->channel_change_time =3D 1;
+ hw->queues =3D 4;
+ hw->wiphy->interface_modes =3D
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_MESH_POINT);
+ hw->ampdu_queues =3D 1;
+
+ /* ask mac80211 to reserve space for magic */
+ hw->vif_data_size =3D sizeof(struct hwsim_vif_priv);
+ hw->sta_data_size =3D sizeof(struct hwsim_sta_priv);
+
+ memcpy(data->channels, hwsim_channels, sizeof(hwsim_channels));
+ memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
+ data->band.channels =3D data->channels;
+ data->band.n_channels =3D ARRAY_SIZE(hwsim_channels);
+ data->band.bitrates =3D data->rates;
+ data->band.n_bitrates =3D ARRAY_SIZE(hwsim_rates);
+ data->band.ht_cap.ht_supported =3D true;
+ data->band.ht_cap.cap =3D IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+ IEEE80211_HT_CAP_GRN_FLD |
+ IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_DSSSCCK40;
+ data->band.ht_cap.ampdu_factor =3D 0x3;
+ data->band.ht_cap.ampdu_density =3D 0x6;
+ memset(&data->band.ht_cap.mcs, 0,
+ sizeof(data->band.ht_cap.mcs));
+ data->band.ht_cap.mcs.rx_mask[0] =3D 0xff;
+ data->band.ht_cap.mcs.rx_mask[1] =3D 0xff;
+ data->band.ht_cap.mcs.tx_params =3D IEEE80211_HT_MCS_TX_DEFINED;
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] =3D &data->band;
+
+ err =3D ieee80211_register_hw(hw);
+ if (err < 0) {
+ printk(KERN_DEBUG "mac80211_hwsim: "
+ "ieee80211_register_hw failed (%d)\n", err);
+ goto failed_hw;
+ }
+
+ printk(KERN_DEBUG "%s: hwaddr %s registered\n",
+ wiphy_name(hw->wiphy),
+ print_mac(mac, hw->wiphy->perm_addr));
+
+ setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
+ (unsigned long) hw);
=20
- SET_IEEE80211_DEV(hw, data->dev);
- addr[3] =3D i >> 8;
- addr[4] =3D i;
- SET_IEEE80211_PERM_ADDR(hw, addr);
-
- hw->channel_change_time =3D 1;
- hw->queues =3D 4;
- hw->wiphy->interface_modes =3D
- BIT(NL80211_IFTYPE_STATION) |
- BIT(NL80211_IFTYPE_AP) |
- BIT(NL80211_IFTYPE_MESH_POINT);
- hw->ampdu_queues =3D 1;
-
- /* ask mac80211 to reserve space for magic */
- hw->vif_data_size =3D sizeof(struct hwsim_vif_priv);
- hw->sta_data_size =3D sizeof(struct hwsim_sta_priv);
-
- memcpy(data->channels, hwsim_channels, sizeof(hwsim_channels));
- memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
- data->band.channels =3D data->channels;
- data->band.n_channels =3D ARRAY_SIZE(hwsim_channels);
- data->band.bitrates =3D data->rates;
- data->band.n_bitrates =3D ARRAY_SIZE(hwsim_rates);
- data->band.ht_cap.ht_supported =3D true;
- data->band.ht_cap.cap =3D IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
- IEEE80211_HT_CAP_GRN_FLD |
- IEEE80211_HT_CAP_SGI_40 |
- IEEE80211_HT_CAP_DSSSCCK40;
- data->band.ht_cap.ampdu_factor =3D 0x3;
- data->band.ht_cap.ampdu_density =3D 0x6;
- memset(&data->band.ht_cap.mcs, 0,
- sizeof(data->band.ht_cap.mcs));
- data->band.ht_cap.mcs.rx_mask[0] =3D 0xff;
- data->band.ht_cap.mcs.rx_mask[1] =3D 0xff;
- data->band.ht_cap.mcs.tx_params =3D IEEE80211_HT_MCS_TX_DEFINED;
- hw->wiphy->bands[IEEE80211_BAND_2GHZ] =3D &data->band;
-
- err =3D ieee80211_register_hw(hw);
- if (err < 0) {
- printk(KERN_DEBUG "mac80211_hwsim: "
- "ieee80211_register_hw failed (%d)\n", err);
- goto failed_hw;
- }
+ list_add_tail(&data->list, &hwsim_radios);
=20
- printk(KERN_DEBUG "%s: hwaddr %s registered\n",
- wiphy_name(hw->wiphy),
- print_mac(mac, hw->wiphy->perm_addr));
+ config_item_init_type_name(&data->item, name, &mac80211_hwsim_type);
+ radios++;
+
+ return &data->item;
+
+failed_hw:
+ device_unregister(data->dev);
+failed_drvdata:
+ ieee80211_free_hw(hw);
+failed:
+ mac80211_hwsim_free();
+ return ERR_PTR(err);
+
+}
+
+static struct configfs_group_operations mac80211_hwsim_group_ops =3D {
+ .make_item =3D make_mac80211_hwsim,
+};
+
+static struct config_item_type mac80211_hwsim_subsys_type =3D {
+ .ct_group_ops =3D &mac80211_hwsim_group_ops,
+ .ct_owner =3D THIS_MODULE,
+};
+
+/*
+ *Mac80211_hwsim Subsystem definition
+ */
+
+static struct configfs_subsystem mac80211_hwsim_subsys =3D {
+ .su_group =3D {
+ .cg_item =3D {
+ .ci_namebuf =3D "mac80211_hwsim",
+ .ci_type =3D &mac80211_hwsim_subsys_type,
+ },
+ },
+};
=20
- data->debugfs =3D debugfs_create_dir("hwsim",
- hw->wiphy->debugfsdir);
- data->debugfs_ps =3D debugfs_create_file("ps", 0666,
- data->debugfs, data,
- &hwsim_fops_ps);
=20
- setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
- (unsigned long) hw);
+static int __init init_mac80211_hwsim(void)
+{
+ int err =3D 0;
+
+ spin_lock_init(&hwsim_radio_lock);
+ INIT_LIST_HEAD(&hwsim_radios);
=20
- list_add_tail(&data->list, &hwsim_radios);
+ hwsim_class =3D class_create(THIS_MODULE, "mac80211_hwsim");
+ if (IS_ERR(hwsim_class))
+ return PTR_ERR(hwsim_class);
+
+ config_group_init(&mac80211_hwsim_subsys.su_group);
+ mutex_init(&mac80211_hwsim_subsys.su_mutex);
+ err =3D configfs_register_subsystem(&mac80211_hwsim_subsys);
+ if (err) {
+ printk(KERN_ERR "Error %d while registering mac80211_hwsim_subsystem=
%s\n",
+ err,
+ mac80211_hwsim_subsys.su_group.cg_item.ci_namebuf);
+ goto out_unregister;
}
=20
hwsim_mon =3D alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
@@ -848,16 +965,16 @@ static int __init init_mac80211_hwsim(vo
=20
return 0;
=20
+out_unregister:
+ configfs_unregister_subsystem(&mac80211_hwsim_subsys);
+ return err;
+
failed_mon:
rtnl_unlock();
free_netdev(hwsim_mon);
mac80211_hwsim_free();
return err;
=20
-failed_hw:
- device_unregister(data->dev);
-failed_drvdata:
- ieee80211_free_hw(hw);
failed:
mac80211_hwsim_free();
return err;
@@ -868,6 +985,7 @@ static void __exit exit_mac80211_hwsim(v
{
printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
=20
+ configfs_unregister_subsystem(&mac80211_hwsim_subsys);
unregister_netdev(hwsim_mon);
mac80211_hwsim_free();
}
@@ -875,3 +993,4 @@ static void __exit exit_mac80211_hwsim(v
=20
module_init(init_mac80211_hwsim);
module_exit(exit_mac80211_hwsim);
+
Veja quais s=E3o os assuntos do momento no Yahoo! +Buscados
http://br.maisbuscados.yahoo.com
On Fri, Dec 05, 2008 at 01:37:48PM -0800, Igor Trindade Oliveira wrote:
> Mac80211_hwsim: Support to configfs operations for create a new radio
The change in general looks reasonable, but I have couple of comments
about the details.
Could you please also update Documentation/networking/mac80211_hwsim/
README to replace the kernel module parameter with description on how to
add virtual radios?
> +++ wireless-testing/drivers/net/wireless/mac80211_hwsim.c 2008-12-02 06:21:56.000000000 -0400
> @@ -140,10 +138,15 @@ struct mac80211_hwsim_data {
> PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
> } ps;
> bool ps_poll_pending;
> - struct dentry *debugfs;
> - struct dentry *debugfs_ps;
> + struct config_item item;
> };
>
> +struct mac80211_hwsim_attr {
> + struct configfs_attribute attr;
> + ssize_t(*show) (struct mac80211_hwsim_data *hwsim, char *buf);
> + ssize_t(*store) (struct mac80211_hwsim_data *hwsim,
> + const char *buf, ssize_t count);
There is extra space (<TAB><SPACE>ssize_t) in indentation here. As far
as function pointer style is concerned, my preference would be to move
the space to be before the variable name: ssize_t (*show)(struct..).
> +static struct configfs_atribbute *mac80211_hwsim_attrs[] = {
Has this been even compile tested? I would assume no, since that struct
name has two typos in it..
> +/*
> + * now we just have one attribute with this function we can
> + * add new attributes in mac80211_hwsim_attrs and do not change
> + * others parts of the code
> + */
Is that comment specific to this function or is it just description of
what the change in whole is doing? Is it describing the change, it
should be in commit message, not in the source code. If it describe this
particular function, I would suggest somewhat different wording to make
that cleaner. It could also be moved above mac80211_hwsim_attrs
initialization if it is describing how new attributes are added.
> @@ -875,3 +993,4 @@ static void __exit exit_mac80211_hwsim(v
>
> module_init(init_mac80211_hwsim);
> module_exit(exit_mac80211_hwsim);
> +
Please don't add unnecessary (and unwanted) whitespace changes.
--
Jouni Malinen PGP id EFC895FA
--- Em seg, 8/12/08, Jouni Malinen <[email protected]> escreveu:
> De: Jouni Malinen <[email protected]>
> Assunto: Re: [PATCH] mac80211_hwsim: configfs support
> Para: "Igor Trindade Oliveira" <[email protected]>
> Cc: [email protected], [email protected], linvil=
[email protected]
> Data: Segunda-feira, 8 de Dezembro de 2008, 11:05
> On Fri, Dec 05, 2008 at 01:37:48PM -0800, Igor Trindade
> Oliveira wrote:
>=20
> > Mac80211_hwsim: Support to configfs operations for
> create a new radio
>=20
> The change in general looks reasonable, but I have couple
> of comments
> about the details.
>=20
> Could you please also update
> Documentation/networking/mac80211_hwsim/
> README to replace the kernel module parameter with
> description on how to
> add virtual radios?
Ok i will go to do that.
>=20
> > +++
> wireless-testing/drivers/net/wireless/mac80211_hwsim.c 2008-12-02
> 06:21:56.000000000 -0400
> > @@ -140,10 +138,15 @@ struct mac80211_hwsim_data {
> > PS_DISABLED, PS_ENABLED, PS_AUTO_POLL,
> PS_MANUAL_POLL
> > } ps;
> > bool ps_poll_pending;
> > - struct dentry *debugfs;
> > - struct dentry *debugfs_ps;
> > + struct config_item item;
> > };
> > =20
> > +struct mac80211_hwsim_attr {
> > + struct configfs_attribute attr;
> > + ssize_t(*show) (struct mac80211_hwsim_data *hwsim,
> char *buf);
> > + ssize_t(*store) (struct mac80211_hwsim_data *hwsim,
> > + const char *buf, ssize_t count);
>=20
> There is extra space (<TAB><SPACE>ssize_t) in
> indentation here. As far
> as function pointer style is concerned, my preference would
> be to move
> the space to be before the variable name: ssize_t
> (*show)(struct..).
>=20
> > +static struct configfs_atribbute
> *mac80211_hwsim_attrs[] =3D {
>=20
> Has this been even compile tested? I would assume no, since
> that struct
> name has two typos in it..
>=20
> > +/*
> > + * now we just have one attribute with this function
> we can
> > + * add new attributes in mac80211_hwsim_attrs and do
> not change
> > + * others parts of the code
> > + */
>=20
> Is that comment specific to this function or is it just
> description of
> what the change in whole is doing? Is it describing the
> change, it
> should be in commit message, not in the source code. If it
> describe this
> particular function, I would suggest somewhat different
> wording to make
> that cleaner. It could also be moved above
> mac80211_hwsim_attrs
> initialization if it is describing how new attributes are
> added.
It's a comment to describing what we need to do for add new attributes.
>=20
> > @@ -875,3 +993,4 @@ static void __exit
> exit_mac80211_hwsim(v
> > =20
> > module_init(init_mac80211_hwsim);
> > module_exit(exit_mac80211_hwsim);
> > +
>=20
> Please don't add unnecessary (and unwanted) whitespace
> changes.
>=20
Ok. i will to go to fix that.
> --=20
> Jouni Malinen =20
> PGP id EFC895FA
> --
> To unsubscribe from this list: send the line
> "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at=20
> http://vger.kernel.org/majordomo-info.html
cheers,
igor
Veja quais s=E3o os assuntos do momento no Yahoo! +Buscados
http://br.maisbuscados.yahoo.com