Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Netlink interface for IEEE 802.15.4 stack
*
* Copyright 2007, 2008 Siemens AG
*
* Written by:
* Sergey Lapin <slapin@ossfans.org>
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Maxim Osipov <maxim.osipov@siemens.com>
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/if_arp.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/cfg802154.h>
#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>
#include <net/rtnetlink.h> /* for rtnl_{un,}lock */
#include <linux/nl802154.h>
#include "ieee802154.h"
#include "rdev-ops.h"
#include "core.h"
static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
<------><------><------><------> u32 seq, int flags, struct wpan_phy *phy)
{
<------>void *hdr;
<------>int i, pages = 0;
<------>uint32_t *buf = kcalloc(32, sizeof(uint32_t), GFP_KERNEL);
<------>pr_debug("%s\n", __func__);
<------>if (!buf)
<------><------>return -EMSGSIZE;
<------>hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
<------><------><------> IEEE802154_LIST_PHY);
<------>if (!hdr)
<------><------>goto out;
<------>rtnl_lock();
<------>if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
<------> nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) ||
<------> nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel))
<------><------>goto nla_put_failure;
<------>for (i = 0; i < 32; i++) {
<------><------>if (phy->supported.channels[i])
<------><------><------>buf[pages++] = phy->supported.channels[i] | (i << 27);
<------>}
<------>if (pages &&
<------> nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
<------><------> pages * sizeof(uint32_t), buf))
<------><------>goto nla_put_failure;
<------>rtnl_unlock();
<------>kfree(buf);
<------>genlmsg_end(msg, hdr);
<------>return 0;
nla_put_failure:
<------>rtnl_unlock();
<------>genlmsg_cancel(msg, hdr);
out:
<------>kfree(buf);
<------>return -EMSGSIZE;
}
int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info)
{
<------>/* Request for interface name, index, type, IEEE address,
<------> * PAN Id, short address
<------> */
<------>struct sk_buff *msg;
<------>struct wpan_phy *phy;
<------>const char *name;
<------>int rc = -ENOBUFS;
<------>pr_debug("%s\n", __func__);
<------>if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
<------><------>return -EINVAL;
<------>name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
<------>if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
<------><------>return -EINVAL; /* phy name should be null-terminated */
<------>phy = wpan_phy_find(name);
<------>if (!phy)
<------><------>return -ENODEV;
<------>msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
<------>if (!msg)
<------><------>goto out_dev;
<------>rc = ieee802154_nl_fill_phy(msg, info->snd_portid, info->snd_seq,
<------><------><------><------> 0, phy);
<------>if (rc < 0)
<------><------>goto out_free;
<------>wpan_phy_put(phy);
<------>return genlmsg_reply(msg, info);
out_free:
<------>nlmsg_free(msg);
out_dev:
<------>wpan_phy_put(phy);
<------>return rc;
}
struct dump_phy_data {
<------>struct sk_buff *skb;
<------>struct netlink_callback *cb;
<------>int idx, s_idx;
};
static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
{
<------>int rc;
<------>struct dump_phy_data *data = _data;
<------>pr_debug("%s\n", __func__);
<------>if (data->idx++ < data->s_idx)
<------><------>return 0;
<------>rc = ieee802154_nl_fill_phy(data->skb,
<------><------><------><------> NETLINK_CB(data->cb->skb).portid,
<------><------><------><------> data->cb->nlh->nlmsg_seq,
<------><------><------><------> NLM_F_MULTI,
<------><------><------><------> phy);
<------>if (rc < 0) {
<------><------>data->idx--;
<------><------>return rc;
<------>}
<------>return 0;
}
int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb)
{
<------>struct dump_phy_data data = {
<------><------>.cb = cb,
<------><------>.skb = skb,
<------><------>.s_idx = cb->args[0],
<------><------>.idx = 0,
<------>};
<------>pr_debug("%s\n", __func__);
<------>wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
<------>cb->args[0] = data.idx;
<------>return skb->len;
}
int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
{
<------>struct sk_buff *msg;
<------>struct wpan_phy *phy;
<------>const char *name;
<------>const char *devname;
<------>int rc = -ENOBUFS;
<------>struct net_device *dev;
<------>int type = __IEEE802154_DEV_INVALID;
<------>unsigned char name_assign_type;
<------>pr_debug("%s\n", __func__);
<------>if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
<------><------>return -EINVAL;
<------>name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
<------>if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
<------><------>return -EINVAL; /* phy name should be null-terminated */
<------>if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
<------><------>devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
<------><------>if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
<------><------><------><------>!= '\0')
<------><------><------>return -EINVAL; /* phy name should be null-terminated */
<------><------>name_assign_type = NET_NAME_USER;
<------>} else {
<------><------>devname = "wpan%d";
<------><------>name_assign_type = NET_NAME_ENUM;
<------>}
<------>if (strlen(devname) >= IFNAMSIZ)
<------><------>return -ENAMETOOLONG;
<------>phy = wpan_phy_find(name);
<------>if (!phy)
<------><------>return -ENODEV;
<------>msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
<------>if (!msg)
<------><------>goto out_dev;
<------>if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
<------> nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
<------><------><------>IEEE802154_ADDR_LEN) {
<------><------>rc = -EINVAL;
<------><------>goto nla_put_failure;
<------>}
<------>if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
<------><------>type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
<------><------>if (type >= __IEEE802154_DEV_MAX) {
<------><------><------>rc = -EINVAL;
<------><------><------>goto nla_put_failure;
<------><------>}
<------>}
<------>dev = rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy), devname,
<------><------><------><------><------> name_assign_type, type);
<------>if (IS_ERR(dev)) {
<------><------>rc = PTR_ERR(dev);
<------><------>goto nla_put_failure;
<------>}
<------>dev_hold(dev);
<------>if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
<------><------>struct sockaddr addr;
<------><------>addr.sa_family = ARPHRD_IEEE802154;
<------><------>nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
<------><------><------> IEEE802154_ADDR_LEN);
<------><------>/* strangely enough, some callbacks (inetdev_event) from
<------><------> * dev_set_mac_address require RTNL_LOCK
<------><------> */
<------><------>rtnl_lock();
<------><------>rc = dev_set_mac_address(dev, &addr, NULL);
<------><------>rtnl_unlock();
<------><------>if (rc)
<------><------><------>goto dev_unregister;
<------>}
<------>if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
<------> nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name)) {
<------><------>rc = -EMSGSIZE;
<------><------>goto nla_put_failure;
<------>}
<------>dev_put(dev);
<------>wpan_phy_put(phy);
<------>return ieee802154_nl_reply(msg, info);
dev_unregister:
<------>rtnl_lock(); /* del_iface must be called with RTNL lock */
<------>rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
<------>dev_put(dev);
<------>rtnl_unlock();
nla_put_failure:
<------>nlmsg_free(msg);
out_dev:
<------>wpan_phy_put(phy);
<------>return rc;
}
int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
{
<------>struct sk_buff *msg;
<------>struct wpan_phy *phy;
<------>const char *name;
<------>int rc;
<------>struct net_device *dev;
<------>pr_debug("%s\n", __func__);
<------>if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
<------><------>return -EINVAL;
<------>name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
<------>if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
<------><------>return -EINVAL; /* name should be null-terminated */
<------>rc = -ENODEV;
<------>dev = dev_get_by_name(genl_info_net(info), name);
<------>if (!dev)
<------><------>return rc;
<------>if (dev->type != ARPHRD_IEEE802154)
<------><------>goto out;
<------>phy = dev->ieee802154_ptr->wpan_phy;
<------>BUG_ON(!phy);
<------>get_device(&phy->dev);
<------>rc = -EINVAL;
<------>/* phy name is optional, but should be checked if it's given */
<------>if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
<------><------>struct wpan_phy *phy2;
<------><------>const char *pname =
<------><------><------>nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
<------><------>if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
<------><------><------><------>!= '\0')
<------><------><------>/* name should be null-terminated */
<------><------><------>goto out_dev;
<------><------>phy2 = wpan_phy_find(pname);
<------><------>if (!phy2)
<------><------><------>goto out_dev;
<------><------>if (phy != phy2) {
<------><------><------>wpan_phy_put(phy2);
<------><------><------>goto out_dev;
<------><------>}
<------>}
<------>rc = -ENOBUFS;
<------>msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
<------>if (!msg)
<------><------>goto out_dev;
<------>rtnl_lock();
<------>rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
<------>/* We don't have device anymore */
<------>dev_put(dev);
<------>dev = NULL;
<------>rtnl_unlock();
<------>if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
<------> nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
<------><------>goto nla_put_failure;
<------>wpan_phy_put(phy);
<------>return ieee802154_nl_reply(msg, info);
nla_put_failure:
<------>nlmsg_free(msg);
out_dev:
<------>wpan_phy_put(phy);
out:
<------>if (dev)
<------><------>dev_put(dev);
<------>return rc;
}