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-rw-r--r--Documentation/networking/ieee802154.txt9
-rw-r--r--drivers/ieee802154/fakehard.c62
-rw-r--r--include/linux/if_arp.h1
-rw-r--r--include/linux/nl802154.h2
-rw-r--r--include/net/ieee802154_netdev.h6
-rw-r--r--include/net/nl802154.h2
-rw-r--r--include/net/wpan-phy.h63
-rw-r--r--net/core/dev.c4
-rw-r--r--net/ieee802154/Makefile2
-rw-r--r--net/ieee802154/af_ieee802154.c4
-rw-r--r--net/ieee802154/netlink.c28
-rw-r--r--net/ieee802154/nl_policy.c1
-rw-r--r--net/ieee802154/raw.c3
-rw-r--r--net/ieee802154/wpan-class.c159
14 files changed, 318 insertions, 28 deletions
diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt
index 1c0c82c8bc7..23c995e6403 100644
--- a/Documentation/networking/ieee802154.txt
+++ b/Documentation/networking/ieee802154.txt
@@ -56,8 +56,12 @@ HardMAC
See the header include/net/ieee802154_netdev.h. You have to implement Linux
net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family
-code via plain sk_buffs. The control block of sk_buffs will contain additional
-info as described in the struct ieee802154_mac_cb.
+code via plain sk_buffs. On skb reception skb->cb must contain additional
+info as described in the struct ieee802154_mac_cb. During packet transmission
+the skb->cb is used to provide additional data to device's header_ops->create
+function. Be aware, that this data can be overriden later (when socket code
+submits skb to qdisc), so if you need something from that cb later, you should
+store info in the skb->data on your own.
To hook the MLME interface you have to populate the ml_priv field of your
net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are
@@ -73,3 +77,4 @@ We are going to provide intermediate layer implementing IEEE 802.15.4 MAC
in software. This is currently WIP.
See header include/net/mac802154.h and several drivers in drivers/ieee802154/.
+
diff --git a/drivers/ieee802154/fakehard.c b/drivers/ieee802154/fakehard.c
index 262536fae90..c1c9697f9fd 100644
--- a/drivers/ieee802154/fakehard.c
+++ b/drivers/ieee802154/fakehard.c
@@ -30,6 +30,12 @@
#include <net/ieee802154_netdev.h>
#include <net/ieee802154.h>
#include <net/nl802154.h>
+#include <net/wpan-phy.h>
+
+struct wpan_phy *net_to_phy(struct net_device *dev)
+{
+ return container_of(dev->dev.parent, struct wpan_phy, dev);
+}
/**
* fake_get_pan_id - Retrieve the PAN ID of the device.
@@ -113,8 +119,15 @@ static u8 fake_get_bsn(struct net_device *dev)
* 802.15.4-2006 document.
*/
static int fake_assoc_req(struct net_device *dev,
- struct ieee802154_addr *addr, u8 channel, u8 cap)
+ struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
{
+ struct wpan_phy *phy = net_to_phy(dev);
+
+ mutex_lock(&phy->pib_lock);
+ phy->current_channel = channel;
+ phy->current_page = page;
+ mutex_unlock(&phy->pib_lock);
+
/* We simply emulate it here */
return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
IEEE802154_SUCCESS);
@@ -179,10 +192,17 @@ static int fake_disassoc_req(struct net_device *dev,
* document, with 7.3.8 describing coordinator realignment.
*/
static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
- u8 channel,
+ u8 channel, u8 page,
u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
u8 coord_realign)
{
+ struct wpan_phy *phy = net_to_phy(dev);
+
+ mutex_lock(&phy->pib_lock);
+ phy->current_channel = channel;
+ phy->current_page = page;
+ mutex_unlock(&phy->pib_lock);
+
/* We don't emulate beacons here at all, so START should fail */
ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
return 0;
@@ -204,11 +224,11 @@ static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
* Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
*/
static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
- u8 duration)
+ u8 page, u8 duration)
{
u8 edl[27] = {};
return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
- channels,
+ channels, page,
type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
}
@@ -290,6 +310,14 @@ static const struct net_device_ops fake_ops = {
.ndo_set_mac_address = ieee802154_fake_mac_addr,
};
+static void ieee802154_fake_destruct(struct net_device *dev)
+{
+ struct wpan_phy *phy = net_to_phy(dev);
+
+ wpan_phy_unregister(phy);
+ free_netdev(dev);
+ wpan_phy_free(phy);
+}
static void ieee802154_fake_setup(struct net_device *dev)
{
@@ -302,22 +330,34 @@ static void ieee802154_fake_setup(struct net_device *dev)
dev->type = ARPHRD_IEEE802154;
dev->flags = IFF_NOARP | IFF_BROADCAST;
dev->watchdog_timeo = 0;
+ dev->destructor = ieee802154_fake_destruct;
}
static int __devinit ieee802154fake_probe(struct platform_device *pdev)
{
- struct net_device *dev =
- alloc_netdev(0, "hardwpan%d", ieee802154_fake_setup);
+ struct net_device *dev;
+ struct wpan_phy *phy = wpan_phy_alloc(0);
int err;
- if (!dev)
+ if (!phy)
+ return -ENOMEM;
+
+ dev = alloc_netdev(0, "hardwpan%d", ieee802154_fake_setup);
+ if (!dev) {
+ wpan_phy_free(phy);
return -ENOMEM;
+ }
+
+ phy->dev.platform_data = dev;
memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
dev->addr_len);
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+ phy->channels_supported = (1 << 27) - 1;
+ phy->transmit_power = 0xbf;
+
dev->netdev_ops = &fake_ops;
dev->ml_priv = &fake_mlme;
@@ -331,15 +371,18 @@ static int __devinit ieee802154fake_probe(struct platform_device *pdev)
goto out;
}
- SET_NETDEV_DEV(dev, &pdev->dev);
+ SET_NETDEV_DEV(dev, &phy->dev);
platform_set_drvdata(pdev, dev);
+ err = wpan_phy_register(&pdev->dev, phy);
+ if (err)
+ goto out;
+
err = register_netdev(dev);
if (err < 0)
goto out;
-
dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
return 0;
@@ -352,7 +395,6 @@ static int __devexit ieee802154fake_remove(struct platform_device *pdev)
{
struct net_device *dev = platform_get_drvdata(pdev);
unregister_netdev(dev);
- free_netdev(dev);
return 0;
}
diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h
index b554300ef8b..282eb37e2de 100644
--- a/include/linux/if_arp.h
+++ b/include/linux/if_arp.h
@@ -87,7 +87,6 @@
#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */
#define ARPHRD_IEEE802154 804
-#define ARPHRD_IEEE802154_PHY 805
#define ARPHRD_PHONET 820 /* PhoNet media type */
#define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */
diff --git a/include/linux/nl802154.h b/include/linux/nl802154.h
index 9a1af5f871a..b7d9435d5a9 100644
--- a/include/linux/nl802154.h
+++ b/include/linux/nl802154.h
@@ -64,6 +64,8 @@ enum {
IEEE802154_ATTR_COORD_REALIGN,
IEEE802154_ATTR_SEC,
+ IEEE802154_ATTR_PAGE,
+
__IEEE802154_ATTR_MAX,
};
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index e2506af3e7c..5dc6a61952d 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -80,7 +80,7 @@ static inline int mac_cb_type(struct sk_buff *skb)
struct ieee802154_mlme_ops {
int (*assoc_req)(struct net_device *dev,
struct ieee802154_addr *addr,
- u8 channel, u8 cap);
+ u8 channel, u8 page, u8 cap);
int (*assoc_resp)(struct net_device *dev,
struct ieee802154_addr *addr,
u16 short_addr, u8 status);
@@ -89,10 +89,10 @@ struct ieee802154_mlme_ops {
u8 reason);
int (*start_req)(struct net_device *dev,
struct ieee802154_addr *addr,
- u8 channel, u8 bcn_ord, u8 sf_ord,
+ u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
u8 pan_coord, u8 blx, u8 coord_realign);
int (*scan_req)(struct net_device *dev,
- u8 type, u32 channels, u8 duration);
+ u8 type, u32 channels, u8 page, u8 duration);
/*
* FIXME: these should become the part of PIB/MIB interface.
diff --git a/include/net/nl802154.h b/include/net/nl802154.h
index e554ecd3727..99d2ba1c7e0 100644
--- a/include/net/nl802154.h
+++ b/include/net/nl802154.h
@@ -95,7 +95,7 @@ int ieee802154_nl_disassoc_confirm(struct net_device *dev,
* Note: This API does not permit the return of an active scan result.
*/
int ieee802154_nl_scan_confirm(struct net_device *dev,
- u8 status, u8 scan_type, u32 unscanned,
+ u8 status, u8 scan_type, u32 unscanned, u8 page,
u8 *edl/*, struct list_head *pan_desc_list */);
/**
diff --git a/include/net/wpan-phy.h b/include/net/wpan-phy.h
new file mode 100644
index 00000000000..547b1e271ac
--- /dev/null
+++ b/include/net/wpan-phy.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2007, 2008, 2009 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ */
+
+#ifndef WPAN_PHY_H
+#define WPAN_PHY_H
+
+#include <linux/netdevice.h>
+#include <linux/mutex.h>
+
+struct wpan_phy {
+ struct mutex pib_lock;
+
+ /*
+ * This is a PIB acording to 802.15.4-2006.
+ * We do not provide timing-related variables, as they
+ * aren't used outside of driver
+ */
+ u8 current_channel;
+ u8 current_page;
+ u32 channels_supported;
+ u8 transmit_power;
+ u8 cca_mode;
+
+ struct device dev;
+ int idx;
+
+ char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
+};
+
+struct wpan_phy *wpan_phy_alloc(size_t priv_size);
+int wpan_phy_register(struct device *parent, struct wpan_phy *phy);
+void wpan_phy_unregister(struct wpan_phy *phy);
+void wpan_phy_free(struct wpan_phy *phy);
+
+static inline void *wpan_phy_priv(struct wpan_phy *phy)
+{
+ BUG_ON(!phy);
+ return &phy->priv;
+}
+
+struct wpan_phy *wpan_phy_find(const char *str);
+static inline const char *wpan_phy_name(struct wpan_phy *phy)
+{
+ return dev_name(&phy->dev);
+}
+#endif
diff --git a/net/core/dev.c b/net/core/dev.c
index 09fb03fa1ae..4b837896ebd 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -269,7 +269,7 @@ static const unsigned short netdev_lock_type[] =
ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET,
- ARPHRD_PHONET_PIPE, ARPHRD_IEEE802154, ARPHRD_IEEE802154_PHY,
+ ARPHRD_PHONET_PIPE, ARPHRD_IEEE802154,
ARPHRD_VOID, ARPHRD_NONE};
static const char *const netdev_lock_name[] =
@@ -287,7 +287,7 @@ static const char *const netdev_lock_name[] =
"_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
"_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
"_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET",
- "_xmit_PHONET_PIPE", "_xmit_IEEE802154", "_xmit_IEEE802154_PHY",
+ "_xmit_PHONET_PIPE", "_xmit_IEEE802154",
"_xmit_VOID", "_xmit_NONE"};
static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index f99338a2610..4068a9f5113 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_IEEE802154) += nl802154.o af_802154.o
+obj-$(CONFIG_IEEE802154) += nl802154.o af_802154.o wpan-class.o
nl802154-y := netlink.o nl_policy.o
af_802154-y := af_ieee802154.o raw.o dgram.o
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index d504c349cb0..cd949d5e451 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -147,9 +147,7 @@ static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
dev_load(sock_net(sk), ifr.ifr_name);
dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
- if ((dev->type == ARPHRD_IEEE802154 ||
- dev->type == ARPHRD_IEEE802154_PHY) &&
- dev->netdev_ops->ndo_do_ioctl)
+ if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
index cd0567f0671..2106ecbf030 100644
--- a/net/ieee802154/netlink.c
+++ b/net/ieee802154/netlink.c
@@ -232,7 +232,7 @@ nla_put_failure:
EXPORT_SYMBOL(ieee802154_nl_beacon_indic);
int ieee802154_nl_scan_confirm(struct net_device *dev,
- u8 status, u8 scan_type, u32 unscanned,
+ u8 status, u8 scan_type, u32 unscanned, u8 page,
u8 *edl/* , struct list_head *pan_desc_list */)
{
struct sk_buff *msg;
@@ -251,6 +251,7 @@ int ieee802154_nl_scan_confirm(struct net_device *dev,
NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
NLA_PUT_U8(msg, IEEE802154_ATTR_SCAN_TYPE, scan_type);
NLA_PUT_U32(msg, IEEE802154_ATTR_CHANNELS, unscanned);
+ NLA_PUT_U8(msg, IEEE802154_ATTR_PAGE, page);
if (edl)
NLA_PUT(msg, IEEE802154_ATTR_ED_LIST, 27, edl);
@@ -349,6 +350,7 @@ static int ieee802154_associate_req(struct sk_buff *skb,
{
struct net_device *dev;
struct ieee802154_addr addr;
+ u8 page;
int ret = -EINVAL;
if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
@@ -374,8 +376,14 @@ static int ieee802154_associate_req(struct sk_buff *skb,
}
addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
+ if (info->attrs[IEEE802154_ATTR_PAGE])
+ page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+ else
+ page = 0;
+
ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
+ page,
nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
dev_put(dev);
@@ -458,6 +466,7 @@ static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
struct ieee802154_addr addr;
u8 channel, bcn_ord, sf_ord;
+ u8 page;
int pan_coord, blx, coord_realign;
int ret;
@@ -488,13 +497,19 @@ static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
+ if (info->attrs[IEEE802154_ATTR_PAGE])
+ page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+ else
+ page = 0;
+
+
if (addr.short_addr == IEEE802154_ADDR_BROADCAST) {
ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
dev_put(dev);
return -EINVAL;
}
- ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel,
+ ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
bcn_ord, sf_ord, pan_coord, blx, coord_realign);
dev_put(dev);
@@ -508,6 +523,7 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
u8 type;
u32 channels;
u8 duration;
+ u8 page;
if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
!info->attrs[IEEE802154_ATTR_CHANNELS] ||
@@ -522,7 +538,13 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
- ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
+ if (info->attrs[IEEE802154_ATTR_PAGE])
+ page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
+ else
+ page = 0;
+
+
+ ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, page,
duration);
dev_put(dev);
diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c
index 83cb4ccef90..2363ebee02e 100644
--- a/net/ieee802154/nl_policy.c
+++ b/net/ieee802154/nl_policy.c
@@ -33,6 +33,7 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
[IEEE802154_ATTR_HW_ADDR] = { .type = NLA_HW_ADDR, },
[IEEE802154_ATTR_PAN_ID] = { .type = NLA_U16, },
[IEEE802154_ATTR_CHANNEL] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_PAGE] = { .type = NLA_U8, },
[IEEE802154_ATTR_COORD_SHORT_ADDR] = { .type = NLA_U16, },
[IEEE802154_ATTR_COORD_HW_ADDR] = { .type = NLA_HW_ADDR, },
[IEEE802154_ATTR_COORD_PAN_ID] = { .type = NLA_U16, },
diff --git a/net/ieee802154/raw.c b/net/ieee802154/raw.c
index 60dee69a1d0..4681501aae9 100644
--- a/net/ieee802154/raw.c
+++ b/net/ieee802154/raw.c
@@ -74,8 +74,7 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int len)
goto out;
}
- if (dev->type != ARPHRD_IEEE802154_PHY &&
- dev->type != ARPHRD_IEEE802154) {
+ if (dev->type != ARPHRD_IEEE802154) {
err = -ENODEV;
goto out_put;
}
diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c
new file mode 100644
index 00000000000..f306604da67
--- /dev/null
+++ b/net/ieee802154/wpan-class.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2007, 2008, 2009 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+
+#include <net/wpan-phy.h>
+
+#define MASTER_SHOW_COMPLEX(name, format_string, args...) \
+static ssize_t name ## _show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev); \
+ int ret; \
+ \
+ mutex_lock(&phy->pib_lock); \
+ ret = sprintf(buf, format_string "\n", args); \
+ mutex_unlock(&phy->pib_lock); \
+ return ret; \
+}
+
+#define MASTER_SHOW(field, format_string) \
+ MASTER_SHOW_COMPLEX(field, format_string, phy->field)
+
+MASTER_SHOW(current_channel, "%d");
+MASTER_SHOW(current_page, "%d");
+MASTER_SHOW(channels_supported, "%#x");
+MASTER_SHOW_COMPLEX(transmit_power, "%d +- %d dB",
+ ((signed char) (phy->transmit_power << 2)) >> 2,
+ (phy->transmit_power >> 6) ? (phy->transmit_power >> 6) * 3 : 1 );
+MASTER_SHOW(cca_mode, "%d");
+
+static struct device_attribute pmib_attrs[] = {
+ __ATTR_RO(current_channel),
+ __ATTR_RO(current_page),
+ __ATTR_RO(channels_supported),
+ __ATTR_RO(transmit_power),
+ __ATTR_RO(cca_mode),
+ {},
+};
+
+static void wpan_phy_release(struct device *d)
+{
+ struct wpan_phy *phy = container_of(d, struct wpan_phy, dev);
+ kfree(phy);
+}
+
+static struct class wpan_phy_class = {
+ .name = "ieee802154",
+ .dev_release = wpan_phy_release,
+ .dev_attrs = pmib_attrs,
+};
+
+static DEFINE_MUTEX(wpan_phy_mutex);
+static int wpan_phy_idx;
+
+static int wpan_phy_match(struct device *dev, void *data)
+{
+ return !strcmp(dev_name(dev), (const char *)data);
+}
+
+struct wpan_phy *wpan_phy_find(const char *str)
+{
+ struct device *dev;
+
+ if (WARN_ON(!str))
+ return NULL;
+
+ dev = class_find_device(&wpan_phy_class, NULL,
+ (void *)str, wpan_phy_match);
+ if (!dev)
+ return NULL;
+
+ return container_of(dev, struct wpan_phy, dev);
+}
+EXPORT_SYMBOL(wpan_phy_find);
+
+static int wpan_phy_idx_valid(int idx)
+{
+ return idx >= 0;
+}
+
+struct wpan_phy *wpan_phy_alloc(size_t priv_size)
+{
+ struct wpan_phy *phy = kzalloc(sizeof(*phy) + priv_size,
+ GFP_KERNEL);
+
+ mutex_lock(&wpan_phy_mutex);
+ phy->idx = wpan_phy_idx++;
+ if (unlikely(!wpan_phy_idx_valid(phy->idx))) {
+ wpan_phy_idx--;
+ mutex_unlock(&wpan_phy_mutex);
+ kfree(phy);
+ return NULL;
+ }
+ mutex_unlock(&wpan_phy_mutex);
+
+ mutex_init(&phy->pib_lock);
+
+ device_initialize(&phy->dev);
+ dev_set_name(&phy->dev, "wpan-phy%d", phy->idx);
+
+ phy->dev.class = &wpan_phy_class;
+
+ return phy;
+}
+EXPORT_SYMBOL(wpan_phy_alloc);
+
+int wpan_phy_register(struct device *parent, struct wpan_phy *phy)
+{
+ phy->dev.parent = parent;
+
+ return device_add(&phy->dev);
+}
+EXPORT_SYMBOL(wpan_phy_register);
+
+void wpan_phy_unregister(struct wpan_phy *phy)
+{
+ device_del(&phy->dev);
+}
+EXPORT_SYMBOL(wpan_phy_unregister);
+
+void wpan_phy_free(struct wpan_phy *phy)
+{
+ put_device(&phy->dev);
+}
+EXPORT_SYMBOL(wpan_phy_free);
+
+static int __init wpan_phy_class_init(void)
+{
+ return class_register(&wpan_phy_class);
+}
+subsys_initcall(wpan_phy_class_init);
+
+static void __exit wpan_phy_class_exit(void)
+{
+ class_unregister(&wpan_phy_class);
+}
+module_exit(wpan_phy_class_exit);
+
+MODULE_DESCRIPTION("IEEE 802.15.4 device class");
+MODULE_LICENSE("GPL v2");
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 22:06:42 +0000