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Release 4.11 net/ieee802154/nl-phy.c

Directory: net/ieee802154
/*
 * Netlink interface for IEEE 802.15.4 stack
 *
 * Copyright 2007, 2008 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.
 *
 * 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 = kzalloc(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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov20583.00%114.29%
David S. Miller176.88%114.29%
Alexander Aring124.86%228.57%
Jesper Juhl93.64%114.29%
Johannes Berg31.21%114.29%
Eric W. Biedermann10.40%114.29%
Total247100.00%7100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov18298.38%125.00%
Eric W. Biedermann10.54%125.00%
Thomas Graf10.54%125.00%
Varka Bhadram10.54%125.00%
Total185100.00%4100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov9698.97%150.00%
Eric W. Biedermann11.03%150.00%
Total97100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov77100.00%1100.00%
Total77100.00%1100.00%


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); 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)) 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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov39882.74%330.00%
Alexander Smirnov387.90%110.00%
Varka Bhadram153.12%220.00%
Alexander Aring132.70%220.00%
David S. Miller91.87%110.00%
Christian Engelmayer81.66%110.00%
Total481100.00%10100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov31888.09%120.00%
Vegard Nossum195.26%120.00%
Alexander Aring154.16%240.00%
David S. Miller92.49%120.00%
Total361100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Dmitry Baryshkov132687.87%314.29%
Alexander Aring473.11%628.57%
Alexander Smirnov382.52%14.76%
David S. Miller352.32%14.76%
Vegard Nossum191.26%14.76%
Varka Bhadram171.13%314.29%
Jesper Juhl90.60%14.76%
Christian Engelmayer80.53%14.76%
Tejun Heo30.20%14.76%
Eric W. Biedermann30.20%14.76%
Johannes Berg30.20%14.76%
Thomas Graf10.07%14.76%
Total1509100.00%21100.00%
Directory: net/ieee802154
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