![Johannes Berg](/assets/img/avatar_default.png)
It isn't very useful to scan the same channel more than once during a given scan, and some hardware (notably iwlwifi) can only scan a limited number of channels at a time. To prevent any overflows, simply disallow scanning any channel multiple times in a given scan command. This is a small change in the userspace ABI, but the only user, wpa_supplicant, never asks for a scan with the same frequency listed twice. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
4109 lines
95 KiB
C
4109 lines
95 KiB
C
/*
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* This is the new netlink-based wireless configuration interface.
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*
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* Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
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*/
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#include <linux/if.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/list.h>
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#include <linux/if_ether.h>
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#include <linux/ieee80211.h>
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#include <linux/nl80211.h>
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#include <linux/rtnetlink.h>
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#include <linux/netlink.h>
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#include <linux/etherdevice.h>
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#include <net/genetlink.h>
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#include <net/cfg80211.h>
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#include "core.h"
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#include "nl80211.h"
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#include "reg.h"
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/* the netlink family */
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static struct genl_family nl80211_fam = {
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.id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
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.name = "nl80211", /* have users key off the name instead */
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.hdrsize = 0, /* no private header */
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.version = 1, /* no particular meaning now */
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.maxattr = NL80211_ATTR_MAX,
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};
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/* internal helper: get drv and dev */
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static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
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struct cfg80211_registered_device **drv,
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struct net_device **dev)
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{
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int ifindex;
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if (!attrs[NL80211_ATTR_IFINDEX])
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return -EINVAL;
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ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
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*dev = dev_get_by_index(&init_net, ifindex);
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if (!*dev)
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return -ENODEV;
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*drv = cfg80211_get_dev_from_ifindex(ifindex);
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if (IS_ERR(*drv)) {
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dev_put(*dev);
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return PTR_ERR(*drv);
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}
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return 0;
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}
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/* policy for the attributes */
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static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
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[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
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.len = 20-1 },
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[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
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[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
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[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
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[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
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[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
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[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
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[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
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[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
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[NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
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[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
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.len = WLAN_MAX_KEY_LEN },
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[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
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[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
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[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
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[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
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[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
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[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
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[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
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.len = IEEE80211_MAX_DATA_LEN },
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[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
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.len = IEEE80211_MAX_DATA_LEN },
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[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
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[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
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[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
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[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
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.len = NL80211_MAX_SUPP_RATES },
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[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
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[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
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[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
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[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
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.len = IEEE80211_MAX_MESH_ID_LEN },
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[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
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[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
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[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
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[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
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[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
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[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
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[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
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.len = NL80211_MAX_SUPP_RATES },
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[NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
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[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
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.len = NL80211_HT_CAPABILITY_LEN },
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[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
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[NL80211_ATTR_IE] = { .type = NLA_BINARY,
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.len = IEEE80211_MAX_DATA_LEN },
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[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
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[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
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[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
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.len = IEEE80211_MAX_SSID_LEN },
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[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
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[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
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[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
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[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
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[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
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[NL80211_ATTR_STA_FLAGS2] = {
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.len = sizeof(struct nl80211_sta_flag_update),
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},
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[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
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};
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/* IE validation */
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static bool is_valid_ie_attr(const struct nlattr *attr)
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{
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const u8 *pos;
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int len;
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if (!attr)
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return true;
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pos = nla_data(attr);
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len = nla_len(attr);
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while (len) {
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u8 elemlen;
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if (len < 2)
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return false;
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len -= 2;
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elemlen = pos[1];
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if (elemlen > len)
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return false;
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len -= elemlen;
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pos += 2 + elemlen;
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}
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return true;
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}
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/* message building helper */
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static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
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int flags, u8 cmd)
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{
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/* since there is no private header just add the generic one */
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return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
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}
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static int nl80211_msg_put_channel(struct sk_buff *msg,
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struct ieee80211_channel *chan)
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{
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NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
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chan->center_freq);
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if (chan->flags & IEEE80211_CHAN_DISABLED)
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NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
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if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
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NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
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if (chan->flags & IEEE80211_CHAN_NO_IBSS)
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NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
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if (chan->flags & IEEE80211_CHAN_RADAR)
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NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
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NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
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DBM_TO_MBM(chan->max_power));
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return 0;
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nla_put_failure:
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return -ENOBUFS;
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}
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/* netlink command implementations */
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static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
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struct cfg80211_registered_device *dev)
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{
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void *hdr;
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struct nlattr *nl_bands, *nl_band;
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struct nlattr *nl_freqs, *nl_freq;
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struct nlattr *nl_rates, *nl_rate;
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struct nlattr *nl_modes;
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struct nlattr *nl_cmds;
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enum ieee80211_band band;
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struct ieee80211_channel *chan;
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struct ieee80211_rate *rate;
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int i;
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u16 ifmodes = dev->wiphy.interface_modes;
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hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
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if (!hdr)
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return -1;
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NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
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NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
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NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
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dev->wiphy.retry_short);
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NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
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dev->wiphy.retry_long);
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NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
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dev->wiphy.frag_threshold);
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NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
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dev->wiphy.rts_threshold);
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NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
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dev->wiphy.max_scan_ssids);
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NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
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dev->wiphy.max_scan_ie_len);
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NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
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sizeof(u32) * dev->wiphy.n_cipher_suites,
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dev->wiphy.cipher_suites);
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nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
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if (!nl_modes)
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goto nla_put_failure;
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i = 0;
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while (ifmodes) {
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if (ifmodes & 1)
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NLA_PUT_FLAG(msg, i);
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ifmodes >>= 1;
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i++;
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}
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nla_nest_end(msg, nl_modes);
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nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
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if (!nl_bands)
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goto nla_put_failure;
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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if (!dev->wiphy.bands[band])
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continue;
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nl_band = nla_nest_start(msg, band);
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if (!nl_band)
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goto nla_put_failure;
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/* add HT info */
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if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
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NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
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sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
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&dev->wiphy.bands[band]->ht_cap.mcs);
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NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
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dev->wiphy.bands[band]->ht_cap.cap);
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NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
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dev->wiphy.bands[band]->ht_cap.ampdu_factor);
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NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
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dev->wiphy.bands[band]->ht_cap.ampdu_density);
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}
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/* add frequencies */
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nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
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if (!nl_freqs)
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goto nla_put_failure;
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for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
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nl_freq = nla_nest_start(msg, i);
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if (!nl_freq)
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goto nla_put_failure;
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chan = &dev->wiphy.bands[band]->channels[i];
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if (nl80211_msg_put_channel(msg, chan))
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goto nla_put_failure;
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nla_nest_end(msg, nl_freq);
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}
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nla_nest_end(msg, nl_freqs);
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/* add bitrates */
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nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
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if (!nl_rates)
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goto nla_put_failure;
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for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
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nl_rate = nla_nest_start(msg, i);
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if (!nl_rate)
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goto nla_put_failure;
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rate = &dev->wiphy.bands[band]->bitrates[i];
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NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
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rate->bitrate);
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if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
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NLA_PUT_FLAG(msg,
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NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
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nla_nest_end(msg, nl_rate);
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}
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nla_nest_end(msg, nl_rates);
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nla_nest_end(msg, nl_band);
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}
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nla_nest_end(msg, nl_bands);
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nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
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if (!nl_cmds)
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goto nla_put_failure;
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i = 0;
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#define CMD(op, n) \
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do { \
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if (dev->ops->op) { \
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i++; \
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NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
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} \
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} while (0)
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CMD(add_virtual_intf, NEW_INTERFACE);
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CMD(change_virtual_intf, SET_INTERFACE);
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CMD(add_key, NEW_KEY);
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CMD(add_beacon, NEW_BEACON);
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CMD(add_station, NEW_STATION);
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CMD(add_mpath, NEW_MPATH);
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CMD(set_mesh_params, SET_MESH_PARAMS);
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CMD(change_bss, SET_BSS);
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CMD(auth, AUTHENTICATE);
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CMD(assoc, ASSOCIATE);
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CMD(deauth, DEAUTHENTICATE);
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CMD(disassoc, DISASSOCIATE);
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CMD(join_ibss, JOIN_IBSS);
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#undef CMD
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nla_nest_end(msg, nl_cmds);
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return genlmsg_end(msg, hdr);
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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|
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static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
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{
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int idx = 0;
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int start = cb->args[0];
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struct cfg80211_registered_device *dev;
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|
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mutex_lock(&cfg80211_mutex);
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list_for_each_entry(dev, &cfg80211_drv_list, list) {
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if (++idx <= start)
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continue;
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if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
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cb->nlh->nlmsg_seq, NLM_F_MULTI,
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dev) < 0) {
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idx--;
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break;
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}
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}
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mutex_unlock(&cfg80211_mutex);
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|
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cb->args[0] = idx;
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|
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return skb->len;
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}
|
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|
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static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
|
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{
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struct sk_buff *msg;
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struct cfg80211_registered_device *dev;
|
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|
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dev = cfg80211_get_dev_from_info(info);
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if (IS_ERR(dev))
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return PTR_ERR(dev);
|
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|
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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goto out_err;
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|
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if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
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goto out_free;
|
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|
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cfg80211_put_dev(dev);
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|
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return genlmsg_unicast(msg, info->snd_pid);
|
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|
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out_free:
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nlmsg_free(msg);
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out_err:
|
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cfg80211_put_dev(dev);
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return -ENOBUFS;
|
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}
|
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|
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static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
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[NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
|
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[NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
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[NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
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[NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
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[NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
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};
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|
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static int parse_txq_params(struct nlattr *tb[],
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struct ieee80211_txq_params *txq_params)
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{
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if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
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!tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
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!tb[NL80211_TXQ_ATTR_AIFS])
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return -EINVAL;
|
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|
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txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
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txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
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txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
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txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
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txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
int result = 0, rem_txq_params = 0;
|
|
struct nlattr *nl_txq_params;
|
|
u32 changed;
|
|
u8 retry_short = 0, retry_long = 0;
|
|
u32 frag_threshold = 0, rts_threshold = 0;
|
|
|
|
rtnl_lock();
|
|
|
|
mutex_lock(&cfg80211_mutex);
|
|
|
|
rdev = __cfg80211_drv_from_info(info);
|
|
if (IS_ERR(rdev)) {
|
|
mutex_unlock(&cfg80211_mutex);
|
|
result = PTR_ERR(rdev);
|
|
goto unlock;
|
|
}
|
|
|
|
mutex_lock(&rdev->mtx);
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_NAME])
|
|
result = cfg80211_dev_rename(
|
|
rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
|
|
|
|
mutex_unlock(&cfg80211_mutex);
|
|
|
|
if (result)
|
|
goto bad_res;
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
|
|
struct ieee80211_txq_params txq_params;
|
|
struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
|
|
|
|
if (!rdev->ops->set_txq_params) {
|
|
result = -EOPNOTSUPP;
|
|
goto bad_res;
|
|
}
|
|
|
|
nla_for_each_nested(nl_txq_params,
|
|
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
|
|
rem_txq_params) {
|
|
nla_parse(tb, NL80211_TXQ_ATTR_MAX,
|
|
nla_data(nl_txq_params),
|
|
nla_len(nl_txq_params),
|
|
txq_params_policy);
|
|
result = parse_txq_params(tb, &txq_params);
|
|
if (result)
|
|
goto bad_res;
|
|
|
|
result = rdev->ops->set_txq_params(&rdev->wiphy,
|
|
&txq_params);
|
|
if (result)
|
|
goto bad_res;
|
|
}
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
|
|
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
|
|
struct ieee80211_channel *chan;
|
|
struct ieee80211_sta_ht_cap *ht_cap;
|
|
u32 freq;
|
|
|
|
if (!rdev->ops->set_channel) {
|
|
result = -EOPNOTSUPP;
|
|
goto bad_res;
|
|
}
|
|
|
|
result = -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
|
|
channel_type = nla_get_u32(info->attrs[
|
|
NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
|
|
if (channel_type != NL80211_CHAN_NO_HT &&
|
|
channel_type != NL80211_CHAN_HT20 &&
|
|
channel_type != NL80211_CHAN_HT40PLUS &&
|
|
channel_type != NL80211_CHAN_HT40MINUS)
|
|
goto bad_res;
|
|
}
|
|
|
|
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
|
|
chan = ieee80211_get_channel(&rdev->wiphy, freq);
|
|
|
|
/* Primary channel not allowed */
|
|
if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
|
|
goto bad_res;
|
|
|
|
if (channel_type == NL80211_CHAN_HT40MINUS &&
|
|
(chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
|
|
goto bad_res;
|
|
else if (channel_type == NL80211_CHAN_HT40PLUS &&
|
|
(chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
|
|
goto bad_res;
|
|
|
|
/*
|
|
* At this point we know if that if HT40 was requested
|
|
* we are allowed to use it and the extension channel
|
|
* exists.
|
|
*/
|
|
|
|
ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
|
|
|
|
/* no HT capabilities or intolerant */
|
|
if (channel_type != NL80211_CHAN_NO_HT) {
|
|
if (!ht_cap->ht_supported)
|
|
goto bad_res;
|
|
if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
|
|
(ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
|
|
goto bad_res;
|
|
}
|
|
|
|
result = rdev->ops->set_channel(&rdev->wiphy, chan,
|
|
channel_type);
|
|
if (result)
|
|
goto bad_res;
|
|
}
|
|
|
|
changed = 0;
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
|
|
retry_short = nla_get_u8(
|
|
info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
|
|
if (retry_short == 0) {
|
|
result = -EINVAL;
|
|
goto bad_res;
|
|
}
|
|
changed |= WIPHY_PARAM_RETRY_SHORT;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
|
|
retry_long = nla_get_u8(
|
|
info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
|
|
if (retry_long == 0) {
|
|
result = -EINVAL;
|
|
goto bad_res;
|
|
}
|
|
changed |= WIPHY_PARAM_RETRY_LONG;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
|
|
frag_threshold = nla_get_u32(
|
|
info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
|
|
if (frag_threshold < 256) {
|
|
result = -EINVAL;
|
|
goto bad_res;
|
|
}
|
|
if (frag_threshold != (u32) -1) {
|
|
/*
|
|
* Fragments (apart from the last one) are required to
|
|
* have even length. Make the fragmentation code
|
|
* simpler by stripping LSB should someone try to use
|
|
* odd threshold value.
|
|
*/
|
|
frag_threshold &= ~0x1;
|
|
}
|
|
changed |= WIPHY_PARAM_FRAG_THRESHOLD;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
|
|
rts_threshold = nla_get_u32(
|
|
info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
|
|
changed |= WIPHY_PARAM_RTS_THRESHOLD;
|
|
}
|
|
|
|
if (changed) {
|
|
u8 old_retry_short, old_retry_long;
|
|
u32 old_frag_threshold, old_rts_threshold;
|
|
|
|
if (!rdev->ops->set_wiphy_params) {
|
|
result = -EOPNOTSUPP;
|
|
goto bad_res;
|
|
}
|
|
|
|
old_retry_short = rdev->wiphy.retry_short;
|
|
old_retry_long = rdev->wiphy.retry_long;
|
|
old_frag_threshold = rdev->wiphy.frag_threshold;
|
|
old_rts_threshold = rdev->wiphy.rts_threshold;
|
|
|
|
if (changed & WIPHY_PARAM_RETRY_SHORT)
|
|
rdev->wiphy.retry_short = retry_short;
|
|
if (changed & WIPHY_PARAM_RETRY_LONG)
|
|
rdev->wiphy.retry_long = retry_long;
|
|
if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
|
|
rdev->wiphy.frag_threshold = frag_threshold;
|
|
if (changed & WIPHY_PARAM_RTS_THRESHOLD)
|
|
rdev->wiphy.rts_threshold = rts_threshold;
|
|
|
|
result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
|
|
if (result) {
|
|
rdev->wiphy.retry_short = old_retry_short;
|
|
rdev->wiphy.retry_long = old_retry_long;
|
|
rdev->wiphy.frag_threshold = old_frag_threshold;
|
|
rdev->wiphy.rts_threshold = old_rts_threshold;
|
|
}
|
|
}
|
|
|
|
bad_res:
|
|
mutex_unlock(&rdev->mtx);
|
|
unlock:
|
|
rtnl_unlock();
|
|
return result;
|
|
}
|
|
|
|
|
|
static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
|
|
struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
|
|
if (!hdr)
|
|
return -1;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
int wp_idx = 0;
|
|
int if_idx = 0;
|
|
int wp_start = cb->args[0];
|
|
int if_start = cb->args[1];
|
|
struct cfg80211_registered_device *dev;
|
|
struct wireless_dev *wdev;
|
|
|
|
mutex_lock(&cfg80211_mutex);
|
|
list_for_each_entry(dev, &cfg80211_drv_list, list) {
|
|
if (wp_idx < wp_start) {
|
|
wp_idx++;
|
|
continue;
|
|
}
|
|
if_idx = 0;
|
|
|
|
mutex_lock(&dev->devlist_mtx);
|
|
list_for_each_entry(wdev, &dev->netdev_list, list) {
|
|
if (if_idx < if_start) {
|
|
if_idx++;
|
|
continue;
|
|
}
|
|
if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
|
dev, wdev->netdev) < 0) {
|
|
mutex_unlock(&dev->devlist_mtx);
|
|
goto out;
|
|
}
|
|
if_idx++;
|
|
}
|
|
mutex_unlock(&dev->devlist_mtx);
|
|
|
|
wp_idx++;
|
|
}
|
|
out:
|
|
mutex_unlock(&cfg80211_mutex);
|
|
|
|
cb->args[0] = wp_idx;
|
|
cb->args[1] = if_idx;
|
|
|
|
return skb->len;
|
|
}
|
|
|
|
static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct sk_buff *msg;
|
|
struct cfg80211_registered_device *dev;
|
|
struct net_device *netdev;
|
|
int err;
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
|
|
if (err)
|
|
return err;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
goto out_err;
|
|
|
|
if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
|
|
dev, netdev) < 0)
|
|
goto out_free;
|
|
|
|
dev_put(netdev);
|
|
cfg80211_put_dev(dev);
|
|
|
|
return genlmsg_unicast(msg, info->snd_pid);
|
|
|
|
out_free:
|
|
nlmsg_free(msg);
|
|
out_err:
|
|
dev_put(netdev);
|
|
cfg80211_put_dev(dev);
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
|
|
[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
|
|
[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
|
|
[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
|
|
[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
|
|
[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
|
|
};
|
|
|
|
static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
|
|
{
|
|
struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
|
|
int flag;
|
|
|
|
*mntrflags = 0;
|
|
|
|
if (!nla)
|
|
return -EINVAL;
|
|
|
|
if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
|
|
nla, mntr_flags_policy))
|
|
return -EINVAL;
|
|
|
|
for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
|
|
if (flags[flag])
|
|
*mntrflags |= (1<<flag);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct vif_params params;
|
|
int err;
|
|
enum nl80211_iftype otype, ntype;
|
|
struct net_device *dev;
|
|
u32 _flags, *flags = NULL;
|
|
bool change = false;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
otype = ntype = dev->ieee80211_ptr->iftype;
|
|
|
|
if (info->attrs[NL80211_ATTR_IFTYPE]) {
|
|
ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
|
|
if (otype != ntype)
|
|
change = true;
|
|
if (ntype > NL80211_IFTYPE_MAX) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
}
|
|
|
|
if (!drv->ops->change_virtual_intf ||
|
|
!(drv->wiphy.interface_modes & (1 << ntype))) {
|
|
err = -EOPNOTSUPP;
|
|
goto unlock;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_MESH_ID]) {
|
|
if (ntype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
|
|
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
|
|
change = true;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
|
|
if (ntype != NL80211_IFTYPE_MONITOR) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
|
|
&_flags);
|
|
if (err)
|
|
goto unlock;
|
|
|
|
flags = &_flags;
|
|
change = true;
|
|
}
|
|
|
|
if (change)
|
|
err = drv->ops->change_virtual_intf(&drv->wiphy, dev,
|
|
ntype, flags, ¶ms);
|
|
else
|
|
err = 0;
|
|
|
|
WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype);
|
|
|
|
if (!err && (ntype != otype)) {
|
|
if (otype == NL80211_IFTYPE_ADHOC)
|
|
cfg80211_clear_ibss(dev, false);
|
|
}
|
|
|
|
unlock:
|
|
dev_put(dev);
|
|
cfg80211_put_dev(drv);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct vif_params params;
|
|
int err;
|
|
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
|
|
u32 flags;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
if (!info->attrs[NL80211_ATTR_IFNAME])
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_IFTYPE]) {
|
|
type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
|
|
if (type > NL80211_IFTYPE_MAX)
|
|
return -EINVAL;
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
drv = cfg80211_get_dev_from_info(info);
|
|
if (IS_ERR(drv)) {
|
|
err = PTR_ERR(drv);
|
|
goto unlock_rtnl;
|
|
}
|
|
|
|
if (!drv->ops->add_virtual_intf ||
|
|
!(drv->wiphy.interface_modes & (1 << type))) {
|
|
err = -EOPNOTSUPP;
|
|
goto unlock;
|
|
}
|
|
|
|
if (type == NL80211_IFTYPE_MESH_POINT &&
|
|
info->attrs[NL80211_ATTR_MESH_ID]) {
|
|
params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
|
|
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
|
|
}
|
|
|
|
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
|
|
info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
|
|
&flags);
|
|
err = drv->ops->add_virtual_intf(&drv->wiphy,
|
|
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
|
|
type, err ? NULL : &flags, ¶ms);
|
|
|
|
unlock:
|
|
cfg80211_put_dev(drv);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int ifindex, err;
|
|
struct net_device *dev;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
ifindex = dev->ifindex;
|
|
dev_put(dev);
|
|
|
|
if (!drv->ops->del_virtual_intf) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
struct get_key_cookie {
|
|
struct sk_buff *msg;
|
|
int error;
|
|
};
|
|
|
|
static void get_key_callback(void *c, struct key_params *params)
|
|
{
|
|
struct get_key_cookie *cookie = c;
|
|
|
|
if (params->key)
|
|
NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
|
|
params->key_len, params->key);
|
|
|
|
if (params->seq)
|
|
NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
|
|
params->seq_len, params->seq);
|
|
|
|
if (params->cipher)
|
|
NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
|
|
params->cipher);
|
|
|
|
return;
|
|
nla_put_failure:
|
|
cookie->error = 1;
|
|
}
|
|
|
|
static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 key_idx = 0;
|
|
u8 *mac_addr = NULL;
|
|
struct get_key_cookie cookie = {
|
|
.error = 0,
|
|
};
|
|
void *hdr;
|
|
struct sk_buff *msg;
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_IDX])
|
|
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
|
|
|
|
if (key_idx > 5)
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->get_key) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
|
|
NL80211_CMD_NEW_KEY);
|
|
|
|
if (IS_ERR(hdr)) {
|
|
err = PTR_ERR(hdr);
|
|
goto out;
|
|
}
|
|
|
|
cookie.msg = msg;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
|
|
if (mac_addr)
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
|
|
|
|
err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
|
|
&cookie, get_key_callback);
|
|
|
|
if (err)
|
|
goto out;
|
|
|
|
if (cookie.error)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
err = genlmsg_unicast(msg, info->snd_pid);
|
|
goto out;
|
|
|
|
nla_put_failure:
|
|
err = -ENOBUFS;
|
|
nlmsg_free(msg);
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 key_idx;
|
|
int (*func)(struct wiphy *wiphy, struct net_device *netdev,
|
|
u8 key_index);
|
|
|
|
if (!info->attrs[NL80211_ATTR_KEY_IDX])
|
|
return -EINVAL;
|
|
|
|
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
|
|
if (key_idx < 4 || key_idx > 5)
|
|
return -EINVAL;
|
|
} else if (key_idx > 3)
|
|
return -EINVAL;
|
|
|
|
/* currently only support setting default key */
|
|
if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
|
|
!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
|
|
func = drv->ops->set_default_key;
|
|
else
|
|
func = drv->ops->set_default_mgmt_key;
|
|
|
|
if (!func) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = func(&drv->wiphy, dev, key_idx);
|
|
#ifdef CONFIG_WIRELESS_EXT
|
|
if (!err) {
|
|
if (func == drv->ops->set_default_key)
|
|
dev->ieee80211_ptr->wext.default_key = key_idx;
|
|
else
|
|
dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
|
|
}
|
|
#endif
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err, i;
|
|
struct net_device *dev;
|
|
struct key_params params;
|
|
u8 key_idx = 0;
|
|
u8 *mac_addr = NULL;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_DATA]) {
|
|
params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
|
|
params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
|
|
params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
|
|
params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_IDX])
|
|
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
|
|
|
|
params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
if (cfg80211_validate_key_settings(¶ms, key_idx, mac_addr))
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
|
|
if (params.cipher == drv->wiphy.cipher_suites[i])
|
|
break;
|
|
if (i == drv->wiphy.n_cipher_suites) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (!drv->ops->add_key) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 key_idx = 0;
|
|
u8 *mac_addr = NULL;
|
|
|
|
if (info->attrs[NL80211_ATTR_KEY_IDX])
|
|
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
|
|
|
|
if (key_idx > 5)
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->del_key) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
|
|
|
|
#ifdef CONFIG_WIRELESS_EXT
|
|
if (!err) {
|
|
if (key_idx == dev->ieee80211_ptr->wext.default_key)
|
|
dev->ieee80211_ptr->wext.default_key = -1;
|
|
else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key)
|
|
dev->ieee80211_ptr->wext.default_mgmt_key = -1;
|
|
}
|
|
#endif
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
int (*call)(struct wiphy *wiphy, struct net_device *dev,
|
|
struct beacon_parameters *info);
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct beacon_parameters params;
|
|
int haveinfo = 0;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
switch (info->genlhdr->cmd) {
|
|
case NL80211_CMD_NEW_BEACON:
|
|
/* these are required for NEW_BEACON */
|
|
if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
|
|
!info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
|
|
!info->attrs[NL80211_ATTR_BEACON_HEAD]) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
call = drv->ops->add_beacon;
|
|
break;
|
|
case NL80211_CMD_SET_BEACON:
|
|
call = drv->ops->set_beacon;
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!call) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
|
|
params.interval =
|
|
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
|
|
haveinfo = 1;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
|
|
params.dtim_period =
|
|
nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
|
|
haveinfo = 1;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
|
|
params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
|
|
params.head_len =
|
|
nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
|
|
haveinfo = 1;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
|
|
params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
|
|
params.tail_len =
|
|
nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
|
|
haveinfo = 1;
|
|
}
|
|
|
|
if (!haveinfo) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
err = call(&drv->wiphy, dev, ¶ms);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->del_beacon) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
err = drv->ops->del_beacon(&drv->wiphy, dev);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
|
|
[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
|
|
[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
|
|
[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
|
|
[NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
|
|
};
|
|
|
|
static int parse_station_flags(struct genl_info *info,
|
|
struct station_parameters *params)
|
|
{
|
|
struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
|
|
struct nlattr *nla;
|
|
int flag;
|
|
|
|
/*
|
|
* Try parsing the new attribute first so userspace
|
|
* can specify both for older kernels.
|
|
*/
|
|
nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
|
|
if (nla) {
|
|
struct nl80211_sta_flag_update *sta_flags;
|
|
|
|
sta_flags = nla_data(nla);
|
|
params->sta_flags_mask = sta_flags->mask;
|
|
params->sta_flags_set = sta_flags->set;
|
|
if ((params->sta_flags_mask |
|
|
params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
/* if present, parse the old attribute */
|
|
|
|
nla = info->attrs[NL80211_ATTR_STA_FLAGS];
|
|
if (!nla)
|
|
return 0;
|
|
|
|
if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
|
|
nla, sta_flags_policy))
|
|
return -EINVAL;
|
|
|
|
params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
|
|
params->sta_flags_mask &= ~1;
|
|
|
|
for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
|
|
if (flags[flag])
|
|
params->sta_flags_set |= (1<<flag);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u16 nl80211_calculate_bitrate(struct rate_info *rate)
|
|
{
|
|
int modulation, streams, bitrate;
|
|
|
|
if (!(rate->flags & RATE_INFO_FLAGS_MCS))
|
|
return rate->legacy;
|
|
|
|
/* the formula below does only work for MCS values smaller than 32 */
|
|
if (rate->mcs >= 32)
|
|
return 0;
|
|
|
|
modulation = rate->mcs & 7;
|
|
streams = (rate->mcs >> 3) + 1;
|
|
|
|
bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
|
|
13500000 : 6500000;
|
|
|
|
if (modulation < 4)
|
|
bitrate *= (modulation + 1);
|
|
else if (modulation == 4)
|
|
bitrate *= (modulation + 2);
|
|
else
|
|
bitrate *= (modulation + 3);
|
|
|
|
bitrate *= streams;
|
|
|
|
if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
|
|
bitrate = (bitrate / 9) * 10;
|
|
|
|
/* do NOT round down here */
|
|
return (bitrate + 50000) / 100000;
|
|
}
|
|
|
|
static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
|
|
int flags, struct net_device *dev,
|
|
u8 *mac_addr, struct station_info *sinfo)
|
|
{
|
|
void *hdr;
|
|
struct nlattr *sinfoattr, *txrate;
|
|
u16 bitrate;
|
|
|
|
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
|
|
if (!hdr)
|
|
return -1;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
|
|
|
|
sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
|
|
if (!sinfoattr)
|
|
goto nla_put_failure;
|
|
if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
|
|
NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
|
|
sinfo->inactive_time);
|
|
if (sinfo->filled & STATION_INFO_RX_BYTES)
|
|
NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
|
|
sinfo->rx_bytes);
|
|
if (sinfo->filled & STATION_INFO_TX_BYTES)
|
|
NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
|
|
sinfo->tx_bytes);
|
|
if (sinfo->filled & STATION_INFO_LLID)
|
|
NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
|
|
sinfo->llid);
|
|
if (sinfo->filled & STATION_INFO_PLID)
|
|
NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
|
|
sinfo->plid);
|
|
if (sinfo->filled & STATION_INFO_PLINK_STATE)
|
|
NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
|
|
sinfo->plink_state);
|
|
if (sinfo->filled & STATION_INFO_SIGNAL)
|
|
NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
|
|
sinfo->signal);
|
|
if (sinfo->filled & STATION_INFO_TX_BITRATE) {
|
|
txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
|
|
if (!txrate)
|
|
goto nla_put_failure;
|
|
|
|
/* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
|
|
bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
|
|
if (bitrate > 0)
|
|
NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
|
|
|
|
if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
|
|
NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
|
|
sinfo->txrate.mcs);
|
|
if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
|
|
NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
|
|
if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
|
|
NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
|
|
|
|
nla_nest_end(msg, txrate);
|
|
}
|
|
if (sinfo->filled & STATION_INFO_RX_PACKETS)
|
|
NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
|
|
sinfo->rx_packets);
|
|
if (sinfo->filled & STATION_INFO_TX_PACKETS)
|
|
NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
|
|
sinfo->tx_packets);
|
|
nla_nest_end(msg, sinfoattr);
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nl80211_dump_station(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct station_info sinfo;
|
|
struct cfg80211_registered_device *dev;
|
|
struct net_device *netdev;
|
|
u8 mac_addr[ETH_ALEN];
|
|
int ifidx = cb->args[0];
|
|
int sta_idx = cb->args[1];
|
|
int err;
|
|
|
|
if (!ifidx) {
|
|
err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
|
|
nl80211_fam.attrbuf, nl80211_fam.maxattr,
|
|
nl80211_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
|
|
return -EINVAL;
|
|
|
|
ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
|
|
if (!ifidx)
|
|
return -EINVAL;
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
netdev = __dev_get_by_index(&init_net, ifidx);
|
|
if (!netdev) {
|
|
err = -ENODEV;
|
|
goto out_rtnl;
|
|
}
|
|
|
|
dev = cfg80211_get_dev_from_ifindex(ifidx);
|
|
if (IS_ERR(dev)) {
|
|
err = PTR_ERR(dev);
|
|
goto out_rtnl;
|
|
}
|
|
|
|
if (!dev->ops->dump_station) {
|
|
err = -EOPNOTSUPP;
|
|
goto out_err;
|
|
}
|
|
|
|
while (1) {
|
|
err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
|
|
mac_addr, &sinfo);
|
|
if (err == -ENOENT)
|
|
break;
|
|
if (err)
|
|
goto out_err;
|
|
|
|
if (nl80211_send_station(skb,
|
|
NETLINK_CB(cb->skb).pid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
|
netdev, mac_addr,
|
|
&sinfo) < 0)
|
|
goto out;
|
|
|
|
sta_idx++;
|
|
}
|
|
|
|
|
|
out:
|
|
cb->args[1] = sta_idx;
|
|
err = skb->len;
|
|
out_err:
|
|
cfg80211_put_dev(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct station_info sinfo;
|
|
struct sk_buff *msg;
|
|
u8 *mac_addr = NULL;
|
|
|
|
memset(&sinfo, 0, sizeof(sinfo));
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->get_station) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
|
|
if (err)
|
|
goto out;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
goto out;
|
|
|
|
if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
|
|
dev, mac_addr, &sinfo) < 0)
|
|
goto out_free;
|
|
|
|
err = genlmsg_unicast(msg, info->snd_pid);
|
|
goto out;
|
|
|
|
out_free:
|
|
nlmsg_free(msg);
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Get vlan interface making sure it is on the right wiphy.
|
|
*/
|
|
static int get_vlan(struct nlattr *vlanattr,
|
|
struct cfg80211_registered_device *rdev,
|
|
struct net_device **vlan)
|
|
{
|
|
*vlan = NULL;
|
|
|
|
if (vlanattr) {
|
|
*vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
|
|
if (!*vlan)
|
|
return -ENODEV;
|
|
if (!(*vlan)->ieee80211_ptr)
|
|
return -EINVAL;
|
|
if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct station_parameters params;
|
|
u8 *mac_addr = NULL;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
params.listen_interval = -1;
|
|
|
|
if (info->attrs[NL80211_ATTR_STA_AID])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
|
|
params.supported_rates =
|
|
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
|
|
params.supported_rates_len =
|
|
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
|
|
params.listen_interval =
|
|
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
|
|
|
|
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
|
|
params.ht_capa =
|
|
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
|
|
|
|
if (parse_station_flags(info, ¶ms))
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
|
|
params.plink_action =
|
|
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* validate settings */
|
|
err = 0;
|
|
|
|
switch (dev->ieee80211_ptr->iftype) {
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
/* disallow mesh-specific things */
|
|
if (params.plink_action)
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_STATION:
|
|
/* disallow everything but AUTHORIZED flag */
|
|
if (params.plink_action)
|
|
err = -EINVAL;
|
|
if (params.vlan)
|
|
err = -EINVAL;
|
|
if (params.supported_rates)
|
|
err = -EINVAL;
|
|
if (params.ht_capa)
|
|
err = -EINVAL;
|
|
if (params.listen_interval >= 0)
|
|
err = -EINVAL;
|
|
if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
/* disallow things mesh doesn't support */
|
|
if (params.vlan)
|
|
err = -EINVAL;
|
|
if (params.ht_capa)
|
|
err = -EINVAL;
|
|
if (params.listen_interval >= 0)
|
|
err = -EINVAL;
|
|
if (params.supported_rates)
|
|
err = -EINVAL;
|
|
if (params.sta_flags_mask)
|
|
err = -EINVAL;
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!drv->ops->change_station) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms);
|
|
|
|
out:
|
|
if (params.vlan)
|
|
dev_put(params.vlan);
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct station_parameters params;
|
|
u8 *mac_addr = NULL;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
|
|
return -EINVAL;
|
|
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
params.supported_rates =
|
|
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
|
|
params.supported_rates_len =
|
|
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
|
|
params.listen_interval =
|
|
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
|
|
|
|
if (info->attrs[NL80211_ATTR_STA_AID]) {
|
|
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
|
|
if (!params.aid || params.aid > IEEE80211_MAX_AID)
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
|
|
params.ht_capa =
|
|
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
|
|
|
|
if (parse_station_flags(info, ¶ms))
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* validate settings */
|
|
err = 0;
|
|
|
|
switch (dev->ieee80211_ptr->iftype) {
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
/* all ok but must have AID */
|
|
if (!params.aid)
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
/* disallow things mesh doesn't support */
|
|
if (params.vlan)
|
|
err = -EINVAL;
|
|
if (params.aid)
|
|
err = -EINVAL;
|
|
if (params.ht_capa)
|
|
err = -EINVAL;
|
|
if (params.listen_interval >= 0)
|
|
err = -EINVAL;
|
|
if (params.supported_rates)
|
|
err = -EINVAL;
|
|
if (params.sta_flags_mask)
|
|
err = -EINVAL;
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!drv->ops->add_station) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms);
|
|
|
|
out:
|
|
if (params.vlan)
|
|
dev_put(params.vlan);
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 *mac_addr = NULL;
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
|
|
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
|
|
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (!drv->ops->del_station) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
|
|
int flags, struct net_device *dev,
|
|
u8 *dst, u8 *next_hop,
|
|
struct mpath_info *pinfo)
|
|
{
|
|
void *hdr;
|
|
struct nlattr *pinfoattr;
|
|
|
|
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
|
|
if (!hdr)
|
|
return -1;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
|
|
NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
|
|
|
|
pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
|
|
if (!pinfoattr)
|
|
goto nla_put_failure;
|
|
if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
|
|
NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
|
|
pinfo->frame_qlen);
|
|
if (pinfo->filled & MPATH_INFO_DSN)
|
|
NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
|
|
pinfo->dsn);
|
|
if (pinfo->filled & MPATH_INFO_METRIC)
|
|
NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
|
|
pinfo->metric);
|
|
if (pinfo->filled & MPATH_INFO_EXPTIME)
|
|
NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
|
|
pinfo->exptime);
|
|
if (pinfo->filled & MPATH_INFO_FLAGS)
|
|
NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
|
|
pinfo->flags);
|
|
if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
|
|
NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
|
|
pinfo->discovery_timeout);
|
|
if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
|
|
NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
|
|
pinfo->discovery_retries);
|
|
|
|
nla_nest_end(msg, pinfoattr);
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nl80211_dump_mpath(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct mpath_info pinfo;
|
|
struct cfg80211_registered_device *dev;
|
|
struct net_device *netdev;
|
|
u8 dst[ETH_ALEN];
|
|
u8 next_hop[ETH_ALEN];
|
|
int ifidx = cb->args[0];
|
|
int path_idx = cb->args[1];
|
|
int err;
|
|
|
|
if (!ifidx) {
|
|
err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
|
|
nl80211_fam.attrbuf, nl80211_fam.maxattr,
|
|
nl80211_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
|
|
return -EINVAL;
|
|
|
|
ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
|
|
if (!ifidx)
|
|
return -EINVAL;
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
netdev = __dev_get_by_index(&init_net, ifidx);
|
|
if (!netdev) {
|
|
err = -ENODEV;
|
|
goto out_rtnl;
|
|
}
|
|
|
|
dev = cfg80211_get_dev_from_ifindex(ifidx);
|
|
if (IS_ERR(dev)) {
|
|
err = PTR_ERR(dev);
|
|
goto out_rtnl;
|
|
}
|
|
|
|
if (!dev->ops->dump_mpath) {
|
|
err = -EOPNOTSUPP;
|
|
goto out_err;
|
|
}
|
|
|
|
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
while (1) {
|
|
err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
|
|
dst, next_hop, &pinfo);
|
|
if (err == -ENOENT)
|
|
break;
|
|
if (err)
|
|
goto out_err;
|
|
|
|
if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
|
netdev, dst, next_hop,
|
|
&pinfo) < 0)
|
|
goto out;
|
|
|
|
path_idx++;
|
|
}
|
|
|
|
|
|
out:
|
|
cb->args[1] = path_idx;
|
|
err = skb->len;
|
|
out_err:
|
|
cfg80211_put_dev(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct mpath_info pinfo;
|
|
struct sk_buff *msg;
|
|
u8 *dst = NULL;
|
|
u8 next_hop[ETH_ALEN];
|
|
|
|
memset(&pinfo, 0, sizeof(pinfo));
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->get_mpath) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
|
|
if (err)
|
|
goto out;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
goto out;
|
|
|
|
if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
|
|
dev, dst, next_hop, &pinfo) < 0)
|
|
goto out_free;
|
|
|
|
err = genlmsg_unicast(msg, info->snd_pid);
|
|
goto out;
|
|
|
|
out_free:
|
|
nlmsg_free(msg);
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 *dst = NULL;
|
|
u8 *next_hop = NULL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
|
|
return -EINVAL;
|
|
|
|
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->change_mpath) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 *dst = NULL;
|
|
u8 *next_hop = NULL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
|
|
return -EINVAL;
|
|
|
|
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->add_mpath) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
u8 *dst = NULL;
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->del_mpath) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
int err;
|
|
struct net_device *dev;
|
|
struct bss_parameters params;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
/* default to not changing parameters */
|
|
params.use_cts_prot = -1;
|
|
params.use_short_preamble = -1;
|
|
params.use_short_slot_time = -1;
|
|
|
|
if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
|
|
params.use_cts_prot =
|
|
nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
|
|
if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
|
|
params.use_short_preamble =
|
|
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
|
|
if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
|
|
params.use_short_slot_time =
|
|
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
|
|
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
|
|
params.basic_rates =
|
|
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
|
|
params.basic_rates_len =
|
|
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->change_bss) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct nla_policy
|
|
reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
|
|
[NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
|
|
[NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
|
|
[NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
|
|
[NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
|
|
[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
|
|
[NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
|
|
};
|
|
|
|
static int parse_reg_rule(struct nlattr *tb[],
|
|
struct ieee80211_reg_rule *reg_rule)
|
|
{
|
|
struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
|
|
struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
|
|
|
|
if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
|
|
return -EINVAL;
|
|
if (!tb[NL80211_ATTR_FREQ_RANGE_START])
|
|
return -EINVAL;
|
|
if (!tb[NL80211_ATTR_FREQ_RANGE_END])
|
|
return -EINVAL;
|
|
if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
|
|
return -EINVAL;
|
|
if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
|
|
return -EINVAL;
|
|
|
|
reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
|
|
|
|
freq_range->start_freq_khz =
|
|
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
|
|
freq_range->end_freq_khz =
|
|
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
|
|
freq_range->max_bandwidth_khz =
|
|
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
|
|
|
|
power_rule->max_eirp =
|
|
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
|
|
|
|
if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
|
|
power_rule->max_antenna_gain =
|
|
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
int r;
|
|
char *data = NULL;
|
|
|
|
/*
|
|
* You should only get this when cfg80211 hasn't yet initialized
|
|
* completely when built-in to the kernel right between the time
|
|
* window between nl80211_init() and regulatory_init(), if that is
|
|
* even possible.
|
|
*/
|
|
mutex_lock(&cfg80211_mutex);
|
|
if (unlikely(!cfg80211_regdomain)) {
|
|
mutex_unlock(&cfg80211_mutex);
|
|
return -EINPROGRESS;
|
|
}
|
|
mutex_unlock(&cfg80211_mutex);
|
|
|
|
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
|
|
return -EINVAL;
|
|
|
|
data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
|
|
|
|
#ifdef CONFIG_WIRELESS_OLD_REGULATORY
|
|
/* We ignore world regdom requests with the old regdom setup */
|
|
if (is_world_regdom(data))
|
|
return -EINVAL;
|
|
#endif
|
|
|
|
r = regulatory_hint_user(data);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int nl80211_get_mesh_params(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct mesh_config cur_params;
|
|
int err;
|
|
struct net_device *dev;
|
|
void *hdr;
|
|
struct nlattr *pinfoattr;
|
|
struct sk_buff *msg;
|
|
|
|
rtnl_lock();
|
|
|
|
/* Look up our device */
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->get_mesh_params) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
/* Get the mesh params */
|
|
err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
|
|
if (err)
|
|
goto out;
|
|
|
|
/* Draw up a netlink message to send back */
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
err = -ENOBUFS;
|
|
goto out;
|
|
}
|
|
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
|
|
NL80211_CMD_GET_MESH_PARAMS);
|
|
if (!hdr)
|
|
goto nla_put_failure;
|
|
pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
|
|
if (!pinfoattr)
|
|
goto nla_put_failure;
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
|
|
cur_params.dot11MeshRetryTimeout);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
|
|
cur_params.dot11MeshConfirmTimeout);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
|
|
cur_params.dot11MeshHoldingTimeout);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
|
|
cur_params.dot11MeshMaxPeerLinks);
|
|
NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
|
|
cur_params.dot11MeshMaxRetries);
|
|
NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
|
|
cur_params.dot11MeshTTL);
|
|
NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
|
|
cur_params.auto_open_plinks);
|
|
NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
|
|
cur_params.dot11MeshHWMPmaxPREQretries);
|
|
NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
|
|
cur_params.path_refresh_time);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
|
|
cur_params.min_discovery_timeout);
|
|
NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
|
|
cur_params.dot11MeshHWMPactivePathTimeout);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
|
|
cur_params.dot11MeshHWMPpreqMinInterval);
|
|
NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
|
|
cur_params.dot11MeshHWMPnetDiameterTraversalTime);
|
|
nla_nest_end(msg, pinfoattr);
|
|
genlmsg_end(msg, hdr);
|
|
err = genlmsg_unicast(msg, info->snd_pid);
|
|
goto out;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
err = -EMSGSIZE;
|
|
out:
|
|
/* Cleanup */
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
|
|
do {\
|
|
if (table[attr_num]) {\
|
|
cfg.param = nla_fn(table[attr_num]); \
|
|
mask |= (1 << (attr_num - 1)); \
|
|
} \
|
|
} while (0);\
|
|
|
|
static struct nla_policy
|
|
nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
|
|
[NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
|
|
[NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
|
|
[NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
|
|
|
|
[NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
|
|
[NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
|
|
[NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
|
|
[NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
|
|
[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
|
|
};
|
|
|
|
static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
int err;
|
|
u32 mask;
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct mesh_config cfg;
|
|
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
|
|
struct nlattr *parent_attr;
|
|
|
|
parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
|
|
if (!parent_attr)
|
|
return -EINVAL;
|
|
if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
|
|
parent_attr, nl80211_meshconf_params_policy))
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
if (!drv->ops->set_mesh_params) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
/* This makes sure that there aren't more than 32 mesh config
|
|
* parameters (otherwise our bitfield scheme would not work.) */
|
|
BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
|
|
|
|
/* Fill in the params struct */
|
|
mask = 0;
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
|
|
mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
|
|
mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
|
|
mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
|
|
mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
|
|
mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
|
|
mask, NL80211_MESHCONF_TTL, nla_get_u8);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
|
|
mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
|
|
mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
|
|
nla_get_u8);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
|
|
mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
|
|
mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
|
|
nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
|
|
mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
|
|
nla_get_u32);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
|
|
mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
|
|
nla_get_u16);
|
|
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
|
|
dot11MeshHWMPnetDiameterTraversalTime,
|
|
mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
|
|
nla_get_u16);
|
|
|
|
/* Apply changes */
|
|
err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
|
|
|
|
out:
|
|
/* cleanup */
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
#undef FILL_IN_MESH_PARAM_IF_SET
|
|
|
|
static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr = NULL;
|
|
struct nlattr *nl_reg_rules;
|
|
unsigned int i;
|
|
int err = -EINVAL;
|
|
|
|
mutex_lock(&cfg80211_mutex);
|
|
|
|
if (!cfg80211_regdomain)
|
|
goto out;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
err = -ENOBUFS;
|
|
goto out;
|
|
}
|
|
|
|
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
|
|
NL80211_CMD_GET_REG);
|
|
if (!hdr)
|
|
goto nla_put_failure;
|
|
|
|
NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
|
|
cfg80211_regdomain->alpha2);
|
|
|
|
nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
|
|
if (!nl_reg_rules)
|
|
goto nla_put_failure;
|
|
|
|
for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
|
|
struct nlattr *nl_reg_rule;
|
|
const struct ieee80211_reg_rule *reg_rule;
|
|
const struct ieee80211_freq_range *freq_range;
|
|
const struct ieee80211_power_rule *power_rule;
|
|
|
|
reg_rule = &cfg80211_regdomain->reg_rules[i];
|
|
freq_range = ®_rule->freq_range;
|
|
power_rule = ®_rule->power_rule;
|
|
|
|
nl_reg_rule = nla_nest_start(msg, i);
|
|
if (!nl_reg_rule)
|
|
goto nla_put_failure;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
|
|
reg_rule->flags);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
|
|
freq_range->start_freq_khz);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
|
|
freq_range->end_freq_khz);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
|
|
freq_range->max_bandwidth_khz);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
|
|
power_rule->max_antenna_gain);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
|
|
power_rule->max_eirp);
|
|
|
|
nla_nest_end(msg, nl_reg_rule);
|
|
}
|
|
|
|
nla_nest_end(msg, nl_reg_rules);
|
|
|
|
genlmsg_end(msg, hdr);
|
|
err = genlmsg_unicast(msg, info->snd_pid);
|
|
goto out;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
err = -EMSGSIZE;
|
|
out:
|
|
mutex_unlock(&cfg80211_mutex);
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
|
|
struct nlattr *nl_reg_rule;
|
|
char *alpha2 = NULL;
|
|
int rem_reg_rules = 0, r = 0;
|
|
u32 num_rules = 0, rule_idx = 0, size_of_regd;
|
|
struct ieee80211_regdomain *rd = NULL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_REG_RULES])
|
|
return -EINVAL;
|
|
|
|
alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
|
|
|
|
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
|
|
rem_reg_rules) {
|
|
num_rules++;
|
|
if (num_rules > NL80211_MAX_SUPP_REG_RULES)
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&cfg80211_mutex);
|
|
|
|
if (!reg_is_valid_request(alpha2)) {
|
|
r = -EINVAL;
|
|
goto bad_reg;
|
|
}
|
|
|
|
size_of_regd = sizeof(struct ieee80211_regdomain) +
|
|
(num_rules * sizeof(struct ieee80211_reg_rule));
|
|
|
|
rd = kzalloc(size_of_regd, GFP_KERNEL);
|
|
if (!rd) {
|
|
r = -ENOMEM;
|
|
goto bad_reg;
|
|
}
|
|
|
|
rd->n_reg_rules = num_rules;
|
|
rd->alpha2[0] = alpha2[0];
|
|
rd->alpha2[1] = alpha2[1];
|
|
|
|
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
|
|
rem_reg_rules) {
|
|
nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
|
|
nla_data(nl_reg_rule), nla_len(nl_reg_rule),
|
|
reg_rule_policy);
|
|
r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
|
|
if (r)
|
|
goto bad_reg;
|
|
|
|
rule_idx++;
|
|
|
|
if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
|
|
r = -EINVAL;
|
|
goto bad_reg;
|
|
}
|
|
}
|
|
|
|
BUG_ON(rule_idx != num_rules);
|
|
|
|
r = set_regdom(rd);
|
|
|
|
mutex_unlock(&cfg80211_mutex);
|
|
|
|
return r;
|
|
|
|
bad_reg:
|
|
mutex_unlock(&cfg80211_mutex);
|
|
kfree(rd);
|
|
return r;
|
|
}
|
|
|
|
static int validate_scan_freqs(struct nlattr *freqs)
|
|
{
|
|
struct nlattr *attr1, *attr2;
|
|
int n_channels = 0, tmp1, tmp2;
|
|
|
|
nla_for_each_nested(attr1, freqs, tmp1) {
|
|
n_channels++;
|
|
/*
|
|
* Some hardware has a limited channel list for
|
|
* scanning, and it is pretty much nonsensical
|
|
* to scan for a channel twice, so disallow that
|
|
* and don't require drivers to check that the
|
|
* channel list they get isn't longer than what
|
|
* they can scan, as long as they can scan all
|
|
* the channels they registered at once.
|
|
*/
|
|
nla_for_each_nested(attr2, freqs, tmp2)
|
|
if (attr1 != attr2 &&
|
|
nla_get_u32(attr1) == nla_get_u32(attr2))
|
|
return 0;
|
|
}
|
|
|
|
return n_channels;
|
|
}
|
|
|
|
static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_scan_request *request;
|
|
struct cfg80211_ssid *ssid;
|
|
struct ieee80211_channel *channel;
|
|
struct nlattr *attr;
|
|
struct wiphy *wiphy;
|
|
int err, tmp, n_ssids = 0, n_channels, i;
|
|
enum ieee80211_band band;
|
|
size_t ie_len;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto out_rtnl;
|
|
|
|
wiphy = &drv->wiphy;
|
|
|
|
if (!drv->ops->scan) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
if (drv->scan_req) {
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
|
|
n_channels = validate_scan_freqs(
|
|
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
|
|
if (!n_channels) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
} else {
|
|
n_channels = 0;
|
|
|
|
for (band = 0; band < IEEE80211_NUM_BANDS; band++)
|
|
if (wiphy->bands[band])
|
|
n_channels += wiphy->bands[band]->n_channels;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
|
|
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
|
|
n_ssids++;
|
|
|
|
if (n_ssids > wiphy->max_scan_ssids) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_IE])
|
|
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
else
|
|
ie_len = 0;
|
|
|
|
if (ie_len > wiphy->max_scan_ie_len) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
request = kzalloc(sizeof(*request)
|
|
+ sizeof(*ssid) * n_ssids
|
|
+ sizeof(channel) * n_channels
|
|
+ ie_len, GFP_KERNEL);
|
|
if (!request) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
request->channels = (void *)((char *)request + sizeof(*request));
|
|
request->n_channels = n_channels;
|
|
if (n_ssids)
|
|
request->ssids = (void *)(request->channels + n_channels);
|
|
request->n_ssids = n_ssids;
|
|
if (ie_len) {
|
|
if (request->ssids)
|
|
request->ie = (void *)(request->ssids + n_ssids);
|
|
else
|
|
request->ie = (void *)(request->channels + n_channels);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
|
|
/* user specified, bail out if channel not found */
|
|
request->n_channels = n_channels;
|
|
i = 0;
|
|
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
|
|
request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
|
|
if (!request->channels[i]) {
|
|
err = -EINVAL;
|
|
goto out_free;
|
|
}
|
|
i++;
|
|
}
|
|
} else {
|
|
/* all channels */
|
|
i = 0;
|
|
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
|
|
int j;
|
|
if (!wiphy->bands[band])
|
|
continue;
|
|
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
|
|
request->channels[i] = &wiphy->bands[band]->channels[j];
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
i = 0;
|
|
if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
|
|
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
|
|
if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
|
|
err = -EINVAL;
|
|
goto out_free;
|
|
}
|
|
memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
|
|
request->ssids[i].ssid_len = nla_len(attr);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
memcpy((void *)request->ie,
|
|
nla_data(info->attrs[NL80211_ATTR_IE]),
|
|
request->ie_len);
|
|
}
|
|
|
|
request->ifidx = dev->ifindex;
|
|
request->wiphy = &drv->wiphy;
|
|
|
|
drv->scan_req = request;
|
|
err = drv->ops->scan(&drv->wiphy, dev, request);
|
|
|
|
if (!err)
|
|
nl80211_send_scan_start(drv, dev);
|
|
|
|
out_free:
|
|
if (err) {
|
|
drv->scan_req = NULL;
|
|
kfree(request);
|
|
}
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
out_rtnl:
|
|
rtnl_unlock();
|
|
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
|
|
struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct cfg80211_bss *res)
|
|
{
|
|
void *hdr;
|
|
struct nlattr *bss;
|
|
|
|
hdr = nl80211hdr_put(msg, pid, seq, flags,
|
|
NL80211_CMD_NEW_SCAN_RESULTS);
|
|
if (!hdr)
|
|
return -1;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
|
|
rdev->bss_generation);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
|
|
|
|
bss = nla_nest_start(msg, NL80211_ATTR_BSS);
|
|
if (!bss)
|
|
goto nla_put_failure;
|
|
if (!is_zero_ether_addr(res->bssid))
|
|
NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
|
|
if (res->information_elements && res->len_information_elements)
|
|
NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
|
|
res->len_information_elements,
|
|
res->information_elements);
|
|
if (res->tsf)
|
|
NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
|
|
if (res->beacon_interval)
|
|
NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
|
|
NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
|
|
NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
|
|
|
|
switch (rdev->wiphy.signal_type) {
|
|
case CFG80211_SIGNAL_TYPE_MBM:
|
|
NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
|
|
break;
|
|
case CFG80211_SIGNAL_TYPE_UNSPEC:
|
|
NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
nla_nest_end(msg, bss);
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nl80211_dump_scan(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct cfg80211_registered_device *dev;
|
|
struct net_device *netdev;
|
|
struct cfg80211_internal_bss *scan;
|
|
int ifidx = cb->args[0];
|
|
int start = cb->args[1], idx = 0;
|
|
int err;
|
|
|
|
if (!ifidx) {
|
|
err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
|
|
nl80211_fam.attrbuf, nl80211_fam.maxattr,
|
|
nl80211_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
|
|
return -EINVAL;
|
|
|
|
ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
|
|
if (!ifidx)
|
|
return -EINVAL;
|
|
cb->args[0] = ifidx;
|
|
}
|
|
|
|
netdev = dev_get_by_index(&init_net, ifidx);
|
|
if (!netdev)
|
|
return -ENODEV;
|
|
|
|
dev = cfg80211_get_dev_from_ifindex(ifidx);
|
|
if (IS_ERR(dev)) {
|
|
err = PTR_ERR(dev);
|
|
goto out_put_netdev;
|
|
}
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
cfg80211_bss_expire(dev);
|
|
|
|
list_for_each_entry(scan, &dev->bss_list, list) {
|
|
if (++idx <= start)
|
|
continue;
|
|
if (nl80211_send_bss(skb,
|
|
NETLINK_CB(cb->skb).pid,
|
|
cb->nlh->nlmsg_seq, NLM_F_MULTI,
|
|
dev, netdev, &scan->pub) < 0) {
|
|
idx--;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
cb->args[1] = idx;
|
|
err = skb->len;
|
|
cfg80211_put_dev(dev);
|
|
out_put_netdev:
|
|
dev_put(netdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
|
|
{
|
|
return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
|
|
auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
|
|
auth_type == NL80211_AUTHTYPE_FT ||
|
|
auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
|
|
}
|
|
|
|
static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_auth_request req;
|
|
struct wiphy *wiphy;
|
|
int err;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->auth) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
wiphy = &drv->wiphy;
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
|
|
req.chan = ieee80211_get_channel(
|
|
wiphy,
|
|
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
|
|
if (!req.chan) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_SSID]) {
|
|
req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
|
|
req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
|
|
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
}
|
|
|
|
req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
|
|
if (!nl80211_valid_auth_type(req.auth_type)) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
err = drv->ops->auth(&drv->wiphy, dev, &req);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_assoc_request req;
|
|
struct wiphy *wiphy;
|
|
int err;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC] ||
|
|
!info->attrs[NL80211_ATTR_SSID])
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->assoc) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
wiphy = &drv->wiphy;
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
|
|
req.chan = ieee80211_get_channel(
|
|
wiphy,
|
|
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
|
|
if (!req.chan) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
|
|
req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
|
|
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_USE_MFP]) {
|
|
enum nl80211_mfp use_mfp =
|
|
nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
|
|
if (use_mfp == NL80211_MFP_REQUIRED)
|
|
req.use_mfp = true;
|
|
else if (use_mfp != NL80211_MFP_NO) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
|
|
|
|
err = drv->ops->assoc(&drv->wiphy, dev, &req);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_deauth_request req;
|
|
struct wiphy *wiphy;
|
|
int err;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_REASON_CODE])
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->deauth) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
wiphy = &drv->wiphy;
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
|
|
if (req.reason_code == 0) {
|
|
/* Reason Code 0 is reserved */
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
|
|
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
}
|
|
|
|
err = drv->ops->deauth(&drv->wiphy, dev, &req);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_disassoc_request req;
|
|
struct wiphy *wiphy;
|
|
int err;
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_MAC])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_REASON_CODE])
|
|
return -EINVAL;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->disassoc) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
wiphy = &drv->wiphy;
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
|
|
req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
|
|
if (req.reason_code == 0) {
|
|
/* Reason Code 0 is reserved */
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
|
|
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
}
|
|
|
|
err = drv->ops->disassoc(&drv->wiphy, dev, &req);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
struct cfg80211_ibss_params ibss;
|
|
struct wiphy *wiphy;
|
|
int err;
|
|
|
|
memset(&ibss, 0, sizeof(ibss));
|
|
|
|
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
|
|
!info->attrs[NL80211_ATTR_SSID] ||
|
|
!nla_len(info->attrs[NL80211_ATTR_SSID]))
|
|
return -EINVAL;
|
|
|
|
ibss.beacon_interval = 100;
|
|
|
|
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
|
|
ibss.beacon_interval =
|
|
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
|
|
if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
|
|
return -EINVAL;
|
|
}
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->join_ibss) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
wiphy = &drv->wiphy;
|
|
|
|
if (info->attrs[NL80211_ATTR_MAC])
|
|
ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
|
|
ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
|
|
ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
|
|
|
|
if (info->attrs[NL80211_ATTR_IE]) {
|
|
ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
|
|
ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
|
|
}
|
|
|
|
ibss.channel = ieee80211_get_channel(wiphy,
|
|
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
|
|
if (!ibss.channel ||
|
|
ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
|
|
ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
|
|
|
|
err = cfg80211_join_ibss(drv, dev, &ibss);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct cfg80211_registered_device *drv;
|
|
struct net_device *dev;
|
|
int err;
|
|
|
|
rtnl_lock();
|
|
|
|
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
|
|
if (err)
|
|
goto unlock_rtnl;
|
|
|
|
if (!drv->ops->leave_ibss) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = -ENETDOWN;
|
|
goto out;
|
|
}
|
|
|
|
err = cfg80211_leave_ibss(drv, dev, false);
|
|
|
|
out:
|
|
cfg80211_put_dev(drv);
|
|
dev_put(dev);
|
|
unlock_rtnl:
|
|
rtnl_unlock();
|
|
return err;
|
|
}
|
|
|
|
static struct genl_ops nl80211_ops[] = {
|
|
{
|
|
.cmd = NL80211_CMD_GET_WIPHY,
|
|
.doit = nl80211_get_wiphy,
|
|
.dumpit = nl80211_dump_wiphy,
|
|
.policy = nl80211_policy,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_WIPHY,
|
|
.doit = nl80211_set_wiphy,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_INTERFACE,
|
|
.doit = nl80211_get_interface,
|
|
.dumpit = nl80211_dump_interface,
|
|
.policy = nl80211_policy,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_INTERFACE,
|
|
.doit = nl80211_set_interface,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_NEW_INTERFACE,
|
|
.doit = nl80211_new_interface,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEL_INTERFACE,
|
|
.doit = nl80211_del_interface,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_KEY,
|
|
.doit = nl80211_get_key,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_KEY,
|
|
.doit = nl80211_set_key,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_NEW_KEY,
|
|
.doit = nl80211_new_key,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEL_KEY,
|
|
.doit = nl80211_del_key,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_BEACON,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = nl80211_addset_beacon,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_NEW_BEACON,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = nl80211_addset_beacon,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEL_BEACON,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = nl80211_del_beacon,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_STATION,
|
|
.doit = nl80211_get_station,
|
|
.dumpit = nl80211_dump_station,
|
|
.policy = nl80211_policy,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_STATION,
|
|
.doit = nl80211_set_station,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_NEW_STATION,
|
|
.doit = nl80211_new_station,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEL_STATION,
|
|
.doit = nl80211_del_station,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_MPATH,
|
|
.doit = nl80211_get_mpath,
|
|
.dumpit = nl80211_dump_mpath,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_MPATH,
|
|
.doit = nl80211_set_mpath,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_NEW_MPATH,
|
|
.doit = nl80211_new_mpath,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEL_MPATH,
|
|
.doit = nl80211_del_mpath,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_BSS,
|
|
.doit = nl80211_set_bss,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_REG,
|
|
.doit = nl80211_get_reg,
|
|
.policy = nl80211_policy,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_REG,
|
|
.doit = nl80211_set_reg,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_REQ_SET_REG,
|
|
.doit = nl80211_req_set_reg,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_MESH_PARAMS,
|
|
.doit = nl80211_get_mesh_params,
|
|
.policy = nl80211_policy,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_SET_MESH_PARAMS,
|
|
.doit = nl80211_set_mesh_params,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_TRIGGER_SCAN,
|
|
.doit = nl80211_trigger_scan,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_GET_SCAN,
|
|
.policy = nl80211_policy,
|
|
.dumpit = nl80211_dump_scan,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_AUTHENTICATE,
|
|
.doit = nl80211_authenticate,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_ASSOCIATE,
|
|
.doit = nl80211_associate,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DEAUTHENTICATE,
|
|
.doit = nl80211_deauthenticate,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_DISASSOCIATE,
|
|
.doit = nl80211_disassociate,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_JOIN_IBSS,
|
|
.doit = nl80211_join_ibss,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = NL80211_CMD_LEAVE_IBSS,
|
|
.doit = nl80211_leave_ibss,
|
|
.policy = nl80211_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
};
|
|
static struct genl_multicast_group nl80211_mlme_mcgrp = {
|
|
.name = "mlme",
|
|
};
|
|
|
|
/* multicast groups */
|
|
static struct genl_multicast_group nl80211_config_mcgrp = {
|
|
.name = "config",
|
|
};
|
|
static struct genl_multicast_group nl80211_scan_mcgrp = {
|
|
.name = "scan",
|
|
};
|
|
static struct genl_multicast_group nl80211_regulatory_mcgrp = {
|
|
.name = "regulatory",
|
|
};
|
|
|
|
/* notification functions */
|
|
|
|
void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
|
|
{
|
|
struct sk_buff *msg;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
|
|
}
|
|
|
|
static int nl80211_add_scan_req(struct sk_buff *msg,
|
|
struct cfg80211_registered_device *rdev)
|
|
{
|
|
struct cfg80211_scan_request *req = rdev->scan_req;
|
|
struct nlattr *nest;
|
|
int i;
|
|
|
|
if (WARN_ON(!req))
|
|
return 0;
|
|
|
|
nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
|
|
if (!nest)
|
|
goto nla_put_failure;
|
|
for (i = 0; i < req->n_ssids; i++)
|
|
NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
|
|
nla_nest_end(msg, nest);
|
|
|
|
nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
|
|
if (!nest)
|
|
goto nla_put_failure;
|
|
for (i = 0; i < req->n_channels; i++)
|
|
NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
|
|
nla_nest_end(msg, nest);
|
|
|
|
if (req->ie)
|
|
NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
|
|
|
|
return 0;
|
|
nla_put_failure:
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
static int nl80211_send_scan_msg(struct sk_buff *msg,
|
|
struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev,
|
|
u32 pid, u32 seq, int flags,
|
|
u32 cmd)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
|
|
if (!hdr)
|
|
return -1;
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
|
|
|
|
/* ignore errors and send incomplete event anyway */
|
|
nl80211_add_scan_req(msg, rdev);
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev)
|
|
{
|
|
struct sk_buff *msg;
|
|
|
|
msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
|
|
NL80211_CMD_TRIGGER_SCAN) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
|
|
}
|
|
|
|
void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev)
|
|
{
|
|
struct sk_buff *msg;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
|
|
NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
|
|
}
|
|
|
|
void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev)
|
|
{
|
|
struct sk_buff *msg;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
|
|
NL80211_CMD_SCAN_ABORTED) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
|
|
}
|
|
|
|
/*
|
|
* This can happen on global regulatory changes or device specific settings
|
|
* based on custom world regulatory domains.
|
|
*/
|
|
void nl80211_send_reg_change_event(struct regulatory_request *request)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
/* Userspace can always count this one always being set */
|
|
NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
|
|
|
|
if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
|
|
NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
|
|
NL80211_REGDOM_TYPE_WORLD);
|
|
else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
|
|
NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
|
|
NL80211_REGDOM_TYPE_CUSTOM_WORLD);
|
|
else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
|
|
request->intersect)
|
|
NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
|
|
NL80211_REGDOM_TYPE_INTERSECTION);
|
|
else {
|
|
NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
|
|
NL80211_REGDOM_TYPE_COUNTRY);
|
|
NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
|
|
}
|
|
|
|
if (wiphy_idx_valid(request->wiphy_idx))
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
|
|
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev,
|
|
const u8 *buf, size_t len,
|
|
enum nl80211_commands cmd)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
|
|
NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *buf, size_t len)
|
|
{
|
|
nl80211_send_mlme_event(rdev, netdev, buf, len,
|
|
NL80211_CMD_AUTHENTICATE);
|
|
}
|
|
|
|
void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *buf,
|
|
size_t len)
|
|
{
|
|
nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
|
|
}
|
|
|
|
void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *buf, size_t len)
|
|
{
|
|
nl80211_send_mlme_event(rdev, netdev, buf, len,
|
|
NL80211_CMD_DEAUTHENTICATE);
|
|
}
|
|
|
|
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *buf,
|
|
size_t len)
|
|
{
|
|
nl80211_send_mlme_event(rdev, netdev, buf, len,
|
|
NL80211_CMD_DISASSOCIATE);
|
|
}
|
|
|
|
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, int cmd,
|
|
const u8 *addr)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
|
|
NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *addr)
|
|
{
|
|
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
|
|
addr);
|
|
}
|
|
|
|
void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *addr)
|
|
{
|
|
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
|
|
}
|
|
|
|
void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *bssid,
|
|
gfp_t gfp)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
|
|
struct net_device *netdev, const u8 *addr,
|
|
enum nl80211_key_type key_type, int key_id,
|
|
const u8 *tsc)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
|
|
if (addr)
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
|
|
NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
|
|
if (tsc)
|
|
NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
|
|
struct ieee80211_channel *channel_before,
|
|
struct ieee80211_channel *channel_after)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
struct nlattr *nl_freq;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return;
|
|
|
|
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
|
|
if (!hdr) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Since we are applying the beacon hint to a wiphy we know its
|
|
* wiphy_idx is valid
|
|
*/
|
|
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
|
|
|
|
/* Before */
|
|
nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
|
|
if (!nl_freq)
|
|
goto nla_put_failure;
|
|
if (nl80211_msg_put_channel(msg, channel_before))
|
|
goto nla_put_failure;
|
|
nla_nest_end(msg, nl_freq);
|
|
|
|
/* After */
|
|
nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
|
|
if (!nl_freq)
|
|
goto nla_put_failure;
|
|
if (nl80211_msg_put_channel(msg, channel_after))
|
|
goto nla_put_failure;
|
|
nla_nest_end(msg, nl_freq);
|
|
|
|
if (genlmsg_end(msg, hdr) < 0) {
|
|
nlmsg_free(msg);
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
|
|
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
/* initialisation/exit functions */
|
|
|
|
int nl80211_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = genl_register_family_with_ops(&nl80211_fam,
|
|
nl80211_ops, ARRAY_SIZE(nl80211_ops));
|
|
if (err)
|
|
return err;
|
|
|
|
err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
return 0;
|
|
err_out:
|
|
genl_unregister_family(&nl80211_fam);
|
|
return err;
|
|
}
|
|
|
|
void nl80211_exit(void)
|
|
{
|
|
genl_unregister_family(&nl80211_fam);
|
|
}
|