| /* |
| * This is the new netlink-based wireless configuration interface. |
| * |
| * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
| */ |
| |
| #include <linux/if.h> |
| #include <linux/module.h> |
| #include <linux/err.h> |
| #include <linux/slab.h> |
| #include <linux/list.h> |
| #include <linux/if_ether.h> |
| #include <linux/ieee80211.h> |
| #include <linux/nl80211.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/netlink.h> |
| #include <linux/etherdevice.h> |
| #include <net/net_namespace.h> |
| #include <net/genetlink.h> |
| #include <net/cfg80211.h> |
| #include <net/sock.h> |
| #include "core.h" |
| #include "nl80211.h" |
| #include "reg.h" |
| |
| static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, |
| struct genl_info *info); |
| static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, |
| struct genl_info *info); |
| |
| /* the netlink family */ |
| static struct genl_family nl80211_fam = { |
| .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ |
| .name = "nl80211", /* have users key off the name instead */ |
| .hdrsize = 0, /* no private header */ |
| .version = 1, /* no particular meaning now */ |
| .maxattr = NL80211_ATTR_MAX, |
| .netnsok = true, |
| .pre_doit = nl80211_pre_doit, |
| .post_doit = nl80211_post_doit, |
| }; |
| |
| /* internal helper: get rdev and dev */ |
| static int get_rdev_dev_by_info_ifindex(struct genl_info *info, |
| struct cfg80211_registered_device **rdev, |
| struct net_device **dev) |
| { |
| struct nlattr **attrs = info->attrs; |
| int ifindex; |
| |
| if (!attrs[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
| *dev = dev_get_by_index(genl_info_net(info), ifindex); |
| if (!*dev) |
| return -ENODEV; |
| |
| *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex); |
| if (IS_ERR(*rdev)) { |
| dev_put(*dev); |
| return PTR_ERR(*rdev); |
| } |
| |
| return 0; |
| } |
| |
| /* policy for the attributes */ |
| static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { |
| [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, |
| .len = 20-1 }, |
| [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, |
| [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, |
| [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, |
| |
| [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, |
| [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, |
| [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, |
| |
| [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, |
| [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN }, |
| |
| [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, |
| [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, |
| .len = WLAN_MAX_KEY_LEN }, |
| [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, |
| [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, |
| [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, |
| [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, |
| |
| [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, |
| [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, |
| [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_DATA_LEN }, |
| [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_DATA_LEN }, |
| [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
| [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, |
| [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, |
| .len = NL80211_MAX_SUPP_RATES }, |
| [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, |
| [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
| [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, |
| [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_MESH_ID_LEN }, |
| [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, |
| |
| [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
| [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, |
| |
| [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, |
| [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, |
| [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, |
| [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, |
| .len = NL80211_MAX_SUPP_RATES }, |
| [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, |
| |
| [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, |
| |
| [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, |
| .len = NL80211_HT_CAPABILITY_LEN }, |
| |
| [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, |
| [NL80211_ATTR_IE] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_DATA_LEN }, |
| [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, |
| |
| [NL80211_ATTR_SSID] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_SSID_LEN }, |
| [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, |
| [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, |
| [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, |
| [NL80211_ATTR_STA_FLAGS2] = { |
| .len = sizeof(struct nl80211_sta_flag_update), |
| }, |
| [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, |
| [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, |
| [NL80211_ATTR_PID] = { .type = NLA_U32 }, |
| [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, |
| [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, |
| .len = WLAN_PMKID_LEN }, |
| [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, |
| [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, |
| [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_DATA_LEN }, |
| [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, |
| [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, |
| [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, |
| [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, |
| [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, |
| [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, |
| [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, |
| [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, |
| [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, |
| [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, |
| [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, |
| [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, |
| [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, |
| }; |
| |
| /* policy for the key attributes */ |
| static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { |
| [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, |
| [NL80211_KEY_IDX] = { .type = NLA_U8 }, |
| [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, |
| [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, |
| [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, |
| [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, |
| [NL80211_KEY_TYPE] = { .type = NLA_U32 }, |
| [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, |
| }; |
| |
| /* policy for the key default flags */ |
| static const struct nla_policy |
| nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { |
| [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, |
| [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, |
| }; |
| |
| /* policy for WoWLAN attributes */ |
| static const struct nla_policy |
| nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { |
| [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, |
| [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, |
| [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, |
| [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, |
| }; |
| |
| /* ifidx get helper */ |
| static int nl80211_get_ifidx(struct netlink_callback *cb) |
| { |
| int res; |
| |
| res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, |
| nl80211_fam.attrbuf, nl80211_fam.maxattr, |
| nl80211_policy); |
| if (res) |
| return res; |
| |
| if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
| if (!res) |
| return -EINVAL; |
| return res; |
| } |
| |
| static int nl80211_prepare_netdev_dump(struct sk_buff *skb, |
| struct netlink_callback *cb, |
| struct cfg80211_registered_device **rdev, |
| struct net_device **dev) |
| { |
| int ifidx = cb->args[0]; |
| int err; |
| |
| if (!ifidx) |
| ifidx = nl80211_get_ifidx(cb); |
| if (ifidx < 0) |
| return ifidx; |
| |
| cb->args[0] = ifidx; |
| |
| rtnl_lock(); |
| |
| *dev = __dev_get_by_index(sock_net(skb->sk), ifidx); |
| if (!*dev) { |
| err = -ENODEV; |
| goto out_rtnl; |
| } |
| |
| *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); |
| if (IS_ERR(*rdev)) { |
| err = PTR_ERR(*rdev); |
| goto out_rtnl; |
| } |
| |
| return 0; |
| out_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev) |
| { |
| cfg80211_unlock_rdev(rdev); |
| rtnl_unlock(); |
| } |
| |
| /* IE validation */ |
| static bool is_valid_ie_attr(const struct nlattr *attr) |
| { |
| const u8 *pos; |
| int len; |
| |
| if (!attr) |
| return true; |
| |
| pos = nla_data(attr); |
| len = nla_len(attr); |
| |
| while (len) { |
| u8 elemlen; |
| |
| if (len < 2) |
| return false; |
| len -= 2; |
| |
| elemlen = pos[1]; |
| if (elemlen > len) |
| return false; |
| |
| len -= elemlen; |
| pos += 2 + elemlen; |
| } |
| |
| return true; |
| } |
| |
| /* message building helper */ |
| static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, |
| int flags, u8 cmd) |
| { |
| /* since there is no private header just add the generic one */ |
| return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); |
| } |
| |
| static int nl80211_msg_put_channel(struct sk_buff *msg, |
| struct ieee80211_channel *chan) |
| { |
| NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, |
| chan->center_freq); |
| |
| if (chan->flags & IEEE80211_CHAN_DISABLED) |
| NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); |
| if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
| NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); |
| if (chan->flags & IEEE80211_CHAN_NO_IBSS) |
| NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); |
| if (chan->flags & IEEE80211_CHAN_RADAR) |
| NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); |
| |
| NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, |
| DBM_TO_MBM(chan->max_power)); |
| |
| return 0; |
| |
| nla_put_failure: |
| return -ENOBUFS; |
| } |
| |
| /* netlink command implementations */ |
| |
| struct key_parse { |
| struct key_params p; |
| int idx; |
| int type; |
| bool def, defmgmt; |
| bool def_uni, def_multi; |
| }; |
| |
| static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) |
| { |
| struct nlattr *tb[NL80211_KEY_MAX + 1]; |
| int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, |
| nl80211_key_policy); |
| if (err) |
| return err; |
| |
| k->def = !!tb[NL80211_KEY_DEFAULT]; |
| k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; |
| |
| if (k->def) { |
| k->def_uni = true; |
| k->def_multi = true; |
| } |
| if (k->defmgmt) |
| k->def_multi = true; |
| |
| if (tb[NL80211_KEY_IDX]) |
| k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); |
| |
| if (tb[NL80211_KEY_DATA]) { |
| k->p.key = nla_data(tb[NL80211_KEY_DATA]); |
| k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); |
| } |
| |
| if (tb[NL80211_KEY_SEQ]) { |
| k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); |
| k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); |
| } |
| |
| if (tb[NL80211_KEY_CIPHER]) |
| k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); |
| |
| if (tb[NL80211_KEY_TYPE]) { |
| k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); |
| if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) |
| return -EINVAL; |
| } |
| |
| if (tb[NL80211_KEY_DEFAULT_TYPES]) { |
| struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; |
| int err = nla_parse_nested(kdt, |
| NUM_NL80211_KEY_DEFAULT_TYPES - 1, |
| tb[NL80211_KEY_DEFAULT_TYPES], |
| nl80211_key_default_policy); |
| if (err) |
| return err; |
| |
| k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; |
| k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; |
| } |
| |
| return 0; |
| } |
| |
| static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) |
| { |
| if (info->attrs[NL80211_ATTR_KEY_DATA]) { |
| k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); |
| k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_KEY_SEQ]) { |
| k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); |
| k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| |
| if (info->attrs[NL80211_ATTR_KEY_CIPHER]) |
| k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); |
| |
| k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; |
| k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; |
| |
| if (k->def) { |
| k->def_uni = true; |
| k->def_multi = true; |
| } |
| if (k->defmgmt) |
| k->def_multi = true; |
| |
| if (info->attrs[NL80211_ATTR_KEY_TYPE]) { |
| k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); |
| if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { |
| struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; |
| int err = nla_parse_nested( |
| kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, |
| info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], |
| nl80211_key_default_policy); |
| if (err) |
| return err; |
| |
| k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; |
| k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; |
| } |
| |
| return 0; |
| } |
| |
| static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) |
| { |
| int err; |
| |
| memset(k, 0, sizeof(*k)); |
| k->idx = -1; |
| k->type = -1; |
| |
| if (info->attrs[NL80211_ATTR_KEY]) |
| err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); |
| else |
| err = nl80211_parse_key_old(info, k); |
| |
| if (err) |
| return err; |
| |
| if (k->def && k->defmgmt) |
| return -EINVAL; |
| |
| if (k->defmgmt) { |
| if (k->def_uni || !k->def_multi) |
| return -EINVAL; |
| } |
| |
| if (k->idx != -1) { |
| if (k->defmgmt) { |
| if (k->idx < 4 || k->idx > 5) |
| return -EINVAL; |
| } else if (k->def) { |
| if (k->idx < 0 || k->idx > 3) |
| return -EINVAL; |
| } else { |
| if (k->idx < 0 || k->idx > 5) |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct cfg80211_cached_keys * |
| nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, |
| struct nlattr *keys) |
| { |
| struct key_parse parse; |
| struct nlattr *key; |
| struct cfg80211_cached_keys *result; |
| int rem, err, def = 0; |
| |
| result = kzalloc(sizeof(*result), GFP_KERNEL); |
| if (!result) |
| return ERR_PTR(-ENOMEM); |
| |
| result->def = -1; |
| result->defmgmt = -1; |
| |
| nla_for_each_nested(key, keys, rem) { |
| memset(&parse, 0, sizeof(parse)); |
| parse.idx = -1; |
| |
| err = nl80211_parse_key_new(key, &parse); |
| if (err) |
| goto error; |
| err = -EINVAL; |
| if (!parse.p.key) |
| goto error; |
| if (parse.idx < 0 || parse.idx > 4) |
| goto error; |
| if (parse.def) { |
| if (def) |
| goto error; |
| def = 1; |
| result->def = parse.idx; |
| if (!parse.def_uni || !parse.def_multi) |
| goto error; |
| } else if (parse.defmgmt) |
| goto error; |
| err = cfg80211_validate_key_settings(rdev, &parse.p, |
| parse.idx, false, NULL); |
| if (err) |
| goto error; |
| result->params[parse.idx].cipher = parse.p.cipher; |
| result->params[parse.idx].key_len = parse.p.key_len; |
| result->params[parse.idx].key = result->data[parse.idx]; |
| memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); |
| } |
| |
| return result; |
| error: |
| kfree(result); |
| return ERR_PTR(err); |
| } |
| |
| static int nl80211_key_allowed(struct wireless_dev *wdev) |
| { |
| ASSERT_WDEV_LOCK(wdev); |
| |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_AP_VLAN: |
| case NL80211_IFTYPE_P2P_GO: |
| case NL80211_IFTYPE_MESH_POINT: |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| if (!wdev->current_bss) |
| return -ENOLINK; |
| break; |
| case NL80211_IFTYPE_STATION: |
| case NL80211_IFTYPE_P2P_CLIENT: |
| if (wdev->sme_state != CFG80211_SME_CONNECTED) |
| return -ENOLINK; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) |
| { |
| struct nlattr *nl_modes = nla_nest_start(msg, attr); |
| int i; |
| |
| if (!nl_modes) |
| goto nla_put_failure; |
| |
| i = 0; |
| while (ifmodes) { |
| if (ifmodes & 1) |
| NLA_PUT_FLAG(msg, i); |
| ifmodes >>= 1; |
| i++; |
| } |
| |
| nla_nest_end(msg, nl_modes); |
| return 0; |
| |
| nla_put_failure: |
| return -ENOBUFS; |
| } |
| |
| static int nl80211_put_iface_combinations(struct wiphy *wiphy, |
| struct sk_buff *msg) |
| { |
| struct nlattr *nl_combis; |
| int i, j; |
| |
| nl_combis = nla_nest_start(msg, |
| NL80211_ATTR_INTERFACE_COMBINATIONS); |
| if (!nl_combis) |
| goto nla_put_failure; |
| |
| for (i = 0; i < wiphy->n_iface_combinations; i++) { |
| const struct ieee80211_iface_combination *c; |
| struct nlattr *nl_combi, *nl_limits; |
| |
| c = &wiphy->iface_combinations[i]; |
| |
| nl_combi = nla_nest_start(msg, i + 1); |
| if (!nl_combi) |
| goto nla_put_failure; |
| |
| nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); |
| if (!nl_limits) |
| goto nla_put_failure; |
| |
| for (j = 0; j < c->n_limits; j++) { |
| struct nlattr *nl_limit; |
| |
| nl_limit = nla_nest_start(msg, j + 1); |
| if (!nl_limit) |
| goto nla_put_failure; |
| NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX, |
| c->limits[j].max); |
| if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, |
| c->limits[j].types)) |
| goto nla_put_failure; |
| nla_nest_end(msg, nl_limit); |
| } |
| |
| nla_nest_end(msg, nl_limits); |
| |
| if (c->beacon_int_infra_match) |
| NLA_PUT_FLAG(msg, |
| NL80211_IFACE_COMB_STA_AP_BI_MATCH); |
| NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, |
| c->num_different_channels); |
| NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM, |
| c->max_interfaces); |
| |
| nla_nest_end(msg, nl_combi); |
| } |
| |
| nla_nest_end(msg, nl_combis); |
| |
| return 0; |
| nla_put_failure: |
| return -ENOBUFS; |
| } |
| |
| static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| struct cfg80211_registered_device *dev) |
| { |
| void *hdr; |
| struct nlattr *nl_bands, *nl_band; |
| struct nlattr *nl_freqs, *nl_freq; |
| struct nlattr *nl_rates, *nl_rate; |
| struct nlattr *nl_cmds; |
| enum ieee80211_band band; |
| struct ieee80211_channel *chan; |
| struct ieee80211_rate *rate; |
| int i; |
| const struct ieee80211_txrx_stypes *mgmt_stypes = |
| dev->wiphy.mgmt_stypes; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); |
| NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, |
| cfg80211_rdev_list_generation); |
| |
| NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, |
| dev->wiphy.retry_short); |
| NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, |
| dev->wiphy.retry_long); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, |
| dev->wiphy.frag_threshold); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, |
| dev->wiphy.rts_threshold); |
| NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, |
| dev->wiphy.coverage_class); |
| NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, |
| dev->wiphy.max_scan_ssids); |
| NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, |
| dev->wiphy.max_scan_ie_len); |
| |
| if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN); |
| if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH); |
| |
| NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, |
| sizeof(u32) * dev->wiphy.n_cipher_suites, |
| dev->wiphy.cipher_suites); |
| |
| NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, |
| dev->wiphy.max_num_pmkids); |
| |
| if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE); |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, |
| dev->wiphy.available_antennas_tx); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, |
| dev->wiphy.available_antennas_rx); |
| |
| if ((dev->wiphy.available_antennas_tx || |
| dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) { |
| u32 tx_ant = 0, rx_ant = 0; |
| int res; |
| res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant); |
| if (!res) { |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant); |
| } |
| } |
| |
| if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, |
| dev->wiphy.interface_modes)) |
| goto nla_put_failure; |
| |
| nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); |
| if (!nl_bands) |
| goto nla_put_failure; |
| |
| for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| if (!dev->wiphy.bands[band]) |
| continue; |
| |
| nl_band = nla_nest_start(msg, band); |
| if (!nl_band) |
| goto nla_put_failure; |
| |
| /* add HT info */ |
| if (dev->wiphy.bands[band]->ht_cap.ht_supported) { |
| NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET, |
| sizeof(dev->wiphy.bands[band]->ht_cap.mcs), |
| &dev->wiphy.bands[band]->ht_cap.mcs); |
| NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA, |
| dev->wiphy.bands[band]->ht_cap.cap); |
| NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, |
| dev->wiphy.bands[band]->ht_cap.ampdu_factor); |
| NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, |
| dev->wiphy.bands[band]->ht_cap.ampdu_density); |
| } |
| |
| /* add frequencies */ |
| nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); |
| if (!nl_freqs) |
| goto nla_put_failure; |
| |
| for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { |
| nl_freq = nla_nest_start(msg, i); |
| if (!nl_freq) |
| goto nla_put_failure; |
| |
| chan = &dev->wiphy.bands[band]->channels[i]; |
| |
| if (nl80211_msg_put_channel(msg, chan)) |
| goto nla_put_failure; |
| |
| nla_nest_end(msg, nl_freq); |
| } |
| |
| nla_nest_end(msg, nl_freqs); |
| |
| /* add bitrates */ |
| nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); |
| if (!nl_rates) |
| goto nla_put_failure; |
| |
| for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { |
| nl_rate = nla_nest_start(msg, i); |
| if (!nl_rate) |
| goto nla_put_failure; |
| |
| rate = &dev->wiphy.bands[band]->bitrates[i]; |
| NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, |
| rate->bitrate); |
| if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) |
| NLA_PUT_FLAG(msg, |
| NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); |
| |
| nla_nest_end(msg, nl_rate); |
| } |
| |
| nla_nest_end(msg, nl_rates); |
| |
| nla_nest_end(msg, nl_band); |
| } |
| nla_nest_end(msg, nl_bands); |
| |
| nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); |
| if (!nl_cmds) |
| goto nla_put_failure; |
| |
| i = 0; |
| #define CMD(op, n) \ |
| do { \ |
| if (dev->ops->op) { \ |
| i++; \ |
| NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \ |
| } \ |
| } while (0) |
| |
| CMD(add_virtual_intf, NEW_INTERFACE); |
| CMD(change_virtual_intf, SET_INTERFACE); |
| CMD(add_key, NEW_KEY); |
| CMD(add_beacon, NEW_BEACON); |
| CMD(add_station, NEW_STATION); |
| CMD(add_mpath, NEW_MPATH); |
| CMD(update_mesh_config, SET_MESH_CONFIG); |
| CMD(change_bss, SET_BSS); |
| CMD(auth, AUTHENTICATE); |
| CMD(assoc, ASSOCIATE); |
| CMD(deauth, DEAUTHENTICATE); |
| CMD(disassoc, DISASSOCIATE); |
| CMD(join_ibss, JOIN_IBSS); |
| CMD(join_mesh, JOIN_MESH); |
| CMD(set_pmksa, SET_PMKSA); |
| CMD(del_pmksa, DEL_PMKSA); |
| CMD(flush_pmksa, FLUSH_PMKSA); |
| CMD(remain_on_channel, REMAIN_ON_CHANNEL); |
| CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); |
| CMD(mgmt_tx, FRAME); |
| CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); |
| if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { |
| i++; |
| NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); |
| } |
| CMD(set_channel, SET_CHANNEL); |
| CMD(set_wds_peer, SET_WDS_PEER); |
| if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) |
| CMD(sched_scan_start, START_SCHED_SCAN); |
| |
| #undef CMD |
| |
| if (dev->ops->connect || dev->ops->auth) { |
| i++; |
| NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT); |
| } |
| |
| if (dev->ops->disconnect || dev->ops->deauth) { |
| i++; |
| NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT); |
| } |
| |
| nla_nest_end(msg, nl_cmds); |
| |
| if (dev->ops->remain_on_channel) |
| NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, |
| dev->wiphy.max_remain_on_channel_duration); |
| |
| /* for now at least assume all drivers have it */ |
| if (dev->ops->mgmt_tx) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); |
| |
| if (mgmt_stypes) { |
| u16 stypes; |
| struct nlattr *nl_ftypes, *nl_ifs; |
| enum nl80211_iftype ift; |
| |
| nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); |
| if (!nl_ifs) |
| goto nla_put_failure; |
| |
| for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { |
| nl_ftypes = nla_nest_start(msg, ift); |
| if (!nl_ftypes) |
| goto nla_put_failure; |
| i = 0; |
| stypes = mgmt_stypes[ift].tx; |
| while (stypes) { |
| if (stypes & 1) |
| NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, |
| (i << 4) | IEEE80211_FTYPE_MGMT); |
| stypes >>= 1; |
| i++; |
| } |
| nla_nest_end(msg, nl_ftypes); |
| } |
| |
| nla_nest_end(msg, nl_ifs); |
| |
| nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); |
| if (!nl_ifs) |
| goto nla_put_failure; |
| |
| for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { |
| nl_ftypes = nla_nest_start(msg, ift); |
| if (!nl_ftypes) |
| goto nla_put_failure; |
| i = 0; |
| stypes = mgmt_stypes[ift].rx; |
| while (stypes) { |
| if (stypes & 1) |
| NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, |
| (i << 4) | IEEE80211_FTYPE_MGMT); |
| stypes >>= 1; |
| i++; |
| } |
| nla_nest_end(msg, nl_ftypes); |
| } |
| nla_nest_end(msg, nl_ifs); |
| } |
| |
| if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) { |
| struct nlattr *nl_wowlan; |
| |
| nl_wowlan = nla_nest_start(msg, |
| NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); |
| if (!nl_wowlan) |
| goto nla_put_failure; |
| |
| if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY); |
| if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); |
| if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); |
| if (dev->wiphy.wowlan.n_patterns) { |
| struct nl80211_wowlan_pattern_support pat = { |
| .max_patterns = dev->wiphy.wowlan.n_patterns, |
| .min_pattern_len = |
| dev->wiphy.wowlan.pattern_min_len, |
| .max_pattern_len = |
| dev->wiphy.wowlan.pattern_max_len, |
| }; |
| NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, |
| sizeof(pat), &pat); |
| } |
| |
| nla_nest_end(msg, nl_wowlan); |
| } |
| |
| if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, |
| dev->wiphy.software_iftypes)) |
| goto nla_put_failure; |
| |
| if (nl80211_put_iface_combinations(&dev->wiphy, msg)) |
| goto nla_put_failure; |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) |
| { |
| int idx = 0; |
| int start = cb->args[0]; |
| struct cfg80211_registered_device *dev; |
| |
| mutex_lock(&cfg80211_mutex); |
| list_for_each_entry(dev, &cfg80211_rdev_list, list) { |
| if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) |
| continue; |
| if (++idx <= start) |
| continue; |
| if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| dev) < 0) { |
| idx--; |
| break; |
| } |
| } |
| mutex_unlock(&cfg80211_mutex); |
| |
| cb->args[0] = idx; |
| |
| return skb->len; |
| } |
| |
| static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct sk_buff *msg; |
| struct cfg80211_registered_device *dev = info->user_ptr[0]; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) { |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { |
| [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, |
| [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, |
| [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, |
| [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, |
| [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, |
| }; |
| |
| static int parse_txq_params(struct nlattr *tb[], |
| struct ieee80211_txq_params *txq_params) |
| { |
| if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] || |
| !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || |
| !tb[NL80211_TXQ_ATTR_AIFS]) |
| return -EINVAL; |
| |
| txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]); |
| txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); |
| txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); |
| txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); |
| txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); |
| |
| return 0; |
| } |
| |
| static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) |
| { |
| /* |
| * You can only set the channel explicitly for AP, mesh |
| * and WDS type interfaces; all others have their channel |
| * managed via their respective "establish a connection" |
| * command (connect, join, ...) |
| * |
| * Monitors are special as they are normally slaved to |
| * whatever else is going on, so they behave as though |
| * you tried setting the wiphy channel itself. |
| */ |
| return !wdev || |
| wdev->iftype == NL80211_IFTYPE_AP || |
| wdev->iftype == NL80211_IFTYPE_WDS || |
| wdev->iftype == NL80211_IFTYPE_MESH_POINT || |
| wdev->iftype == NL80211_IFTYPE_MONITOR || |
| wdev->iftype == NL80211_IFTYPE_P2P_GO; |
| } |
| |
| static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev, |
| struct genl_info *info) |
| { |
| enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
| u32 freq; |
| int result; |
| |
| if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
| return -EINVAL; |
| |
| if (!nl80211_can_set_dev_channel(wdev)) |
| return -EOPNOTSUPP; |
| |
| 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) |
| return -EINVAL; |
| } |
| |
| freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
| |
| mutex_lock(&rdev->devlist_mtx); |
| if (wdev) { |
| wdev_lock(wdev); |
| result = cfg80211_set_freq(rdev, wdev, freq, channel_type); |
| wdev_unlock(wdev); |
| } else { |
| result = cfg80211_set_freq(rdev, NULL, freq, channel_type); |
| } |
| mutex_unlock(&rdev->devlist_mtx); |
| |
| return result; |
| } |
| |
| static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *netdev = info->user_ptr[1]; |
| |
| return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); |
| } |
| |
| static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| const u8 *bssid; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (netif_running(dev)) |
| return -EBUSY; |
| |
| if (!rdev->ops->set_wds_peer) |
| return -EOPNOTSUPP; |
| |
| if (wdev->iftype != NL80211_IFTYPE_WDS) |
| return -EOPNOTSUPP; |
| |
| bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); |
| } |
| |
| |
| static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev; |
| struct net_device *netdev = NULL; |
| struct wireless_dev *wdev; |
| 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; |
| u8 coverage_class = 0; |
| |
| /* |
| * Try to find the wiphy and netdev. Normally this |
| * function shouldn't need the netdev, but this is |
| * done for backward compatibility -- previously |
| * setting the channel was done per wiphy, but now |
| * it is per netdev. Previous userland like hostapd |
| * also passed a netdev to set_wiphy, so that it is |
| * possible to let that go to the right netdev! |
| */ |
| mutex_lock(&cfg80211_mutex); |
| |
| if (info->attrs[NL80211_ATTR_IFINDEX]) { |
| int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); |
| |
| netdev = dev_get_by_index(genl_info_net(info), ifindex); |
| if (netdev && netdev->ieee80211_ptr) { |
| rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); |
| mutex_lock(&rdev->mtx); |
| } else |
| netdev = NULL; |
| } |
| |
| if (!netdev) { |
| rdev = __cfg80211_rdev_from_info(info); |
| if (IS_ERR(rdev)) { |
| mutex_unlock(&cfg80211_mutex); |
| return PTR_ERR(rdev); |
| } |
| wdev = NULL; |
| netdev = NULL; |
| result = 0; |
| |
| mutex_lock(&rdev->mtx); |
| } else if (netif_running(netdev) && |
| nl80211_can_set_dev_channel(netdev->ieee80211_ptr)) |
| wdev = netdev->ieee80211_ptr; |
| else |
| wdev = NULL; |
| |
| /* |
| * end workaround code, by now the rdev is available |
| * and locked, and wdev may or may not be NULL. |
| */ |
| |
| 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]) { |
| result = __nl80211_set_channel(rdev, wdev, info); |
| if (result) |
| goto bad_res; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { |
| enum nl80211_tx_power_setting type; |
| int idx, mbm = 0; |
| |
| if (!rdev->ops->set_tx_power) { |
| result = -EOPNOTSUPP; |
| goto bad_res; |
| } |
| |
| idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; |
| type = nla_get_u32(info->attrs[idx]); |
| |
| if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && |
| (type != NL80211_TX_POWER_AUTOMATIC)) { |
| result = -EINVAL; |
| goto bad_res; |
| } |
| |
| if (type != NL80211_TX_POWER_AUTOMATIC) { |
| idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; |
| mbm = nla_get_u32(info->attrs[idx]); |
| } |
| |
| result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm); |
| if (result) |
| goto bad_res; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && |
| info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { |
| u32 tx_ant, rx_ant; |
| if ((!rdev->wiphy.available_antennas_tx && |
| !rdev->wiphy.available_antennas_rx) || |
| !rdev->ops->set_antenna) { |
| result = -EOPNOTSUPP; |
| goto bad_res; |
| } |
| |
| tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); |
| rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); |
| |
| /* reject antenna configurations which don't match the |
| * available antenna masks, except for the "all" mask */ |
| if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || |
| (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) { |
| result = -EINVAL; |
| goto bad_res; |
| } |
| |
| tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; |
| rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; |
| |
| result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant); |
| 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 (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { |
| coverage_class = nla_get_u8( |
| info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); |
| changed |= WIPHY_PARAM_COVERAGE_CLASS; |
| } |
| |
| if (changed) { |
| u8 old_retry_short, old_retry_long; |
| u32 old_frag_threshold, old_rts_threshold; |
| u8 old_coverage_class; |
| |
| 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; |
| old_coverage_class = rdev->wiphy.coverage_class; |
| |
| 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; |
| if (changed & WIPHY_PARAM_COVERAGE_CLASS) |
| rdev->wiphy.coverage_class = coverage_class; |
| |
| 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; |
| rdev->wiphy.coverage_class = old_coverage_class; |
| } |
| } |
| |
| bad_res: |
| mutex_unlock(&rdev->mtx); |
| if (netdev) |
| dev_put(netdev); |
| 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); |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, |
| rdev->devlist_generation ^ |
| (cfg80211_rdev_list_generation << 2)); |
| |
| 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 *rdev; |
| struct wireless_dev *wdev; |
| |
| mutex_lock(&cfg80211_mutex); |
| list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) |
| continue; |
| if (wp_idx < wp_start) { |
| wp_idx++; |
| continue; |
| } |
| if_idx = 0; |
| |
| mutex_lock(&rdev->devlist_mtx); |
| list_for_each_entry(wdev, &rdev->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, |
| rdev, wdev->netdev) < 0) { |
| mutex_unlock(&rdev->devlist_mtx); |
| goto out; |
| } |
| if_idx++; |
| } |
| mutex_unlock(&rdev->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 = info->user_ptr[0]; |
| struct net_device *netdev = info->user_ptr[1]; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, |
| dev, netdev) < 0) { |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| 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_valid_4addr(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u8 use_4addr, |
| enum nl80211_iftype iftype) |
| { |
| if (!use_4addr) { |
| if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) |
| return -EBUSY; |
| return 0; |
| } |
| |
| switch (iftype) { |
| case NL80211_IFTYPE_AP_VLAN: |
| if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) |
| return 0; |
| break; |
| case NL80211_IFTYPE_STATION: |
| if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) |
| return 0; |
| break; |
| default: |
| break; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct vif_params params; |
| int err; |
| enum nl80211_iftype otype, ntype; |
| struct net_device *dev = info->user_ptr[1]; |
| u32 _flags, *flags = NULL; |
| bool change = false; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| 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) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_MESH_ID]) { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| |
| if (ntype != NL80211_IFTYPE_MESH_POINT) |
| return -EINVAL; |
| if (netif_running(dev)) |
| return -EBUSY; |
| |
| wdev_lock(wdev); |
| BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != |
| IEEE80211_MAX_MESH_ID_LEN); |
| wdev->mesh_id_up_len = |
| nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
| memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), |
| wdev->mesh_id_up_len); |
| wdev_unlock(wdev); |
| } |
| |
| if (info->attrs[NL80211_ATTR_4ADDR]) { |
| params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); |
| change = true; |
| err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); |
| if (err) |
| return err; |
| } else { |
| params.use_4addr = -1; |
| } |
| |
| if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
| if (ntype != NL80211_IFTYPE_MONITOR) |
| return -EINVAL; |
| err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], |
| &_flags); |
| if (err) |
| return err; |
| |
| flags = &_flags; |
| change = true; |
| } |
| |
| if (change) |
| err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); |
| else |
| err = 0; |
| |
| if (!err && params.use_4addr != -1) |
| dev->ieee80211_ptr->use_4addr = params.use_4addr; |
| |
| return err; |
| } |
| |
| static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct vif_params params; |
| struct net_device *dev; |
| 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; |
| } |
| |
| if (!rdev->ops->add_virtual_intf || |
| !(rdev->wiphy.interface_modes & (1 << type))) |
| return -EOPNOTSUPP; |
| |
| if (info->attrs[NL80211_ATTR_4ADDR]) { |
| params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); |
| err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); |
| if (err) |
| return err; |
| } |
| |
| err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
| info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, |
| &flags); |
| dev = rdev->ops->add_virtual_intf(&rdev->wiphy, |
| nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
| type, err ? NULL : &flags, ¶ms); |
| if (IS_ERR(dev)) |
| return PTR_ERR(dev); |
| |
| if (type == NL80211_IFTYPE_MESH_POINT && |
| info->attrs[NL80211_ATTR_MESH_ID]) { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| |
| wdev_lock(wdev); |
| BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != |
| IEEE80211_MAX_MESH_ID_LEN); |
| wdev->mesh_id_up_len = |
| nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
| memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), |
| wdev->mesh_id_up_len); |
| wdev_unlock(wdev); |
| } |
| |
| return 0; |
| } |
| |
| static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| if (!rdev->ops->del_virtual_intf) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->del_virtual_intf(&rdev->wiphy, dev); |
| } |
| |
| struct get_key_cookie { |
| struct sk_buff *msg; |
| int error; |
| int idx; |
| }; |
| |
| static void get_key_callback(void *c, struct key_params *params) |
| { |
| struct nlattr *key; |
| 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); |
| |
| key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); |
| if (!key) |
| goto nla_put_failure; |
| |
| if (params->key) |
| NLA_PUT(cookie->msg, NL80211_KEY_DATA, |
| params->key_len, params->key); |
| |
| if (params->seq) |
| NLA_PUT(cookie->msg, NL80211_KEY_SEQ, |
| params->seq_len, params->seq); |
| |
| if (params->cipher) |
| NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER, |
| params->cipher); |
| |
| NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx); |
| |
| nla_nest_end(cookie->msg, key); |
| |
| return; |
| nla_put_failure: |
| cookie->error = 1; |
| } |
| |
| static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| u8 key_idx = 0; |
| const u8 *mac_addr = NULL; |
| bool pairwise; |
| 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]); |
| |
| pairwise = !!mac_addr; |
| if (info->attrs[NL80211_ATTR_KEY_TYPE]) { |
| u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); |
| if (kt >= NUM_NL80211_KEYTYPES) |
| return -EINVAL; |
| if (kt != NL80211_KEYTYPE_GROUP && |
| kt != NL80211_KEYTYPE_PAIRWISE) |
| return -EINVAL; |
| pairwise = kt == NL80211_KEYTYPE_PAIRWISE; |
| } |
| |
| if (!rdev->ops->get_key) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_NEW_KEY); |
| if (IS_ERR(hdr)) |
| return PTR_ERR(hdr); |
| |
| cookie.msg = msg; |
| cookie.idx = key_idx; |
| |
| 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); |
| |
| if (pairwise && mac_addr && |
| !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) |
| return -ENOENT; |
| |
| err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise, |
| mac_addr, &cookie, get_key_callback); |
| |
| if (err) |
| goto free_msg; |
| |
| if (cookie.error) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| err = -ENOBUFS; |
| free_msg: |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct key_parse key; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| err = nl80211_parse_key(info, &key); |
| if (err) |
| return err; |
| |
| if (key.idx < 0) |
| return -EINVAL; |
| |
| /* only support setting default key */ |
| if (!key.def && !key.defmgmt) |
| return -EINVAL; |
| |
| wdev_lock(dev->ieee80211_ptr); |
| |
| if (key.def) { |
| if (!rdev->ops->set_default_key) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = nl80211_key_allowed(dev->ieee80211_ptr); |
| if (err) |
| goto out; |
| |
| err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx, |
| key.def_uni, key.def_multi); |
| |
| if (err) |
| goto out; |
| |
| #ifdef CONFIG_CFG80211_WEXT |
| dev->ieee80211_ptr->wext.default_key = key.idx; |
| #endif |
| } else { |
| if (key.def_uni || !key.def_multi) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (!rdev->ops->set_default_mgmt_key) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = nl80211_key_allowed(dev->ieee80211_ptr); |
| if (err) |
| goto out; |
| |
| err = rdev->ops->set_default_mgmt_key(&rdev->wiphy, |
| dev, key.idx); |
| if (err) |
| goto out; |
| |
| #ifdef CONFIG_CFG80211_WEXT |
| dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; |
| #endif |
| } |
| |
| out: |
| wdev_unlock(dev->ieee80211_ptr); |
| |
| return err; |
| } |
| |
| static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| struct key_parse key; |
| const u8 *mac_addr = NULL; |
| |
| err = nl80211_parse_key(info, &key); |
| if (err) |
| return err; |
| |
| if (!key.p.key) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (key.type == -1) { |
| if (mac_addr) |
| key.type = NL80211_KEYTYPE_PAIRWISE; |
| else |
| key.type = NL80211_KEYTYPE_GROUP; |
| } |
| |
| /* for now */ |
| if (key.type != NL80211_KEYTYPE_PAIRWISE && |
| key.type != NL80211_KEYTYPE_GROUP) |
| return -EINVAL; |
| |
| if (!rdev->ops->add_key) |
| return -EOPNOTSUPP; |
| |
| if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, |
| key.type == NL80211_KEYTYPE_PAIRWISE, |
| mac_addr)) |
| return -EINVAL; |
| |
| wdev_lock(dev->ieee80211_ptr); |
| err = nl80211_key_allowed(dev->ieee80211_ptr); |
| if (!err) |
| err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, |
| key.type == NL80211_KEYTYPE_PAIRWISE, |
| mac_addr, &key.p); |
| wdev_unlock(dev->ieee80211_ptr); |
| |
| return err; |
| } |
| |
| static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| u8 *mac_addr = NULL; |
| struct key_parse key; |
| |
| err = nl80211_parse_key(info, &key); |
| if (err) |
| return err; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (key.type == -1) { |
| if (mac_addr) |
| key.type = NL80211_KEYTYPE_PAIRWISE; |
| else |
| key.type = NL80211_KEYTYPE_GROUP; |
| } |
| |
| /* for now */ |
| if (key.type != NL80211_KEYTYPE_PAIRWISE && |
| key.type != NL80211_KEYTYPE_GROUP) |
| return -EINVAL; |
| |
| if (!rdev->ops->del_key) |
| return -EOPNOTSUPP; |
| |
| wdev_lock(dev->ieee80211_ptr); |
| err = nl80211_key_allowed(dev->ieee80211_ptr); |
| |
| if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && |
| !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) |
| err = -ENOENT; |
| |
| if (!err) |
| err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, |
| key.type == NL80211_KEYTYPE_PAIRWISE, |
| mac_addr); |
| |
| #ifdef CONFIG_CFG80211_WEXT |
| 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 |
| wdev_unlock(dev->ieee80211_ptr); |
| |
| 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 *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct beacon_parameters params; |
| int haveinfo = 0, err; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) |
| return -EINVAL; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| 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]) |
| return -EINVAL; |
| |
| params.interval = |
| nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
| params.dtim_period = |
| nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); |
| |
| err = cfg80211_validate_beacon_int(rdev, params.interval); |
| if (err) |
| return err; |
| |
| call = rdev->ops->add_beacon; |
| break; |
| case NL80211_CMD_SET_BEACON: |
| call = rdev->ops->set_beacon; |
| break; |
| default: |
| WARN_ON(1); |
| return -EOPNOTSUPP; |
| } |
| |
| if (!call) |
| return -EOPNOTSUPP; |
| |
| 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) |
| return -EINVAL; |
| |
| err = call(&rdev->wiphy, dev, ¶ms); |
| if (!err && params.interval) |
| wdev->beacon_interval = params.interval; |
| return err; |
| } |
| |
| static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| int err; |
| |
| if (!rdev->ops->del_beacon) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| err = rdev->ops->del_beacon(&rdev->wiphy, dev); |
| if (!err) |
| wdev->beacon_interval = 0; |
| 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 }, |
| [NL80211_STA_FLAG_AUTHENTICATED] = { .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 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, |
| int attr) |
| { |
| struct nlattr *rate; |
| u16 bitrate; |
| |
| rate = nla_nest_start(msg, attr); |
| if (!rate) |
| goto nla_put_failure; |
| |
| /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ |
| bitrate = cfg80211_calculate_bitrate(info); |
| if (bitrate > 0) |
| NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); |
| |
| if (info->flags & RATE_INFO_FLAGS_MCS) |
| NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs); |
| if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) |
| NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); |
| if (info->flags & RATE_INFO_FLAGS_SHORT_GI) |
| NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); |
| |
| nla_nest_end(msg, rate); |
| return true; |
| |
| nla_put_failure: |
| return false; |
| } |
| |
| static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
| int flags, struct net_device *dev, |
| const u8 *mac_addr, struct station_info *sinfo) |
| { |
| void *hdr; |
| struct nlattr *sinfoattr, *bss_param; |
| |
| 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); |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation); |
| |
| sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
| if (!sinfoattr) |
| goto nla_put_failure; |
| if (sinfo->filled & STATION_INFO_CONNECTED_TIME) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME, |
| sinfo->connected_time); |
| 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_SIGNAL_AVG) |
| NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG, |
| sinfo->signal_avg); |
| if (sinfo->filled & STATION_INFO_TX_BITRATE) { |
| if (!nl80211_put_sta_rate(msg, &sinfo->txrate, |
| NL80211_STA_INFO_TX_BITRATE)) |
| goto nla_put_failure; |
| } |
| if (sinfo->filled & STATION_INFO_RX_BITRATE) { |
| if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, |
| NL80211_STA_INFO_RX_BITRATE)) |
| goto nla_put_failure; |
| } |
| 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); |
| if (sinfo->filled & STATION_INFO_TX_RETRIES) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES, |
| sinfo->tx_retries); |
| if (sinfo->filled & STATION_INFO_TX_FAILED) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED, |
| sinfo->tx_failed); |
| if (sinfo->filled & STATION_INFO_BSS_PARAM) { |
| bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); |
| if (!bss_param) |
| goto nla_put_failure; |
| |
| if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) |
| NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT); |
| if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) |
| NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE); |
| if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) |
| NLA_PUT_FLAG(msg, |
| NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME); |
| NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, |
| sinfo->bss_param.dtim_period); |
| NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, |
| sinfo->bss_param.beacon_interval); |
| |
| nla_nest_end(msg, bss_param); |
| } |
| 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 sta_idx = cb->args[1]; |
| int err; |
| |
| err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); |
| if (err) |
| return err; |
| |
| 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: |
| nl80211_finish_netdev_dump(dev); |
| |
| return err; |
| } |
| |
| static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct station_info sinfo; |
| struct sk_buff *msg; |
| u8 *mac_addr = NULL; |
| int err; |
| |
| memset(&sinfo, 0, sizeof(sinfo)); |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (!rdev->ops->get_station) |
| return -EOPNOTSUPP; |
| |
| err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); |
| if (err) |
| return err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, |
| dev, mac_addr, &sinfo) < 0) { |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| /* |
| * Get vlan interface making sure it is running and on the right wiphy. |
| */ |
| static int get_vlan(struct genl_info *info, |
| struct cfg80211_registered_device *rdev, |
| struct net_device **vlan) |
| { |
| struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; |
| *vlan = NULL; |
| |
| if (vlanattr) { |
| *vlan = dev_get_by_index(genl_info_net(info), |
| nla_get_u32(vlanattr)); |
| if (!*vlan) |
| return -ENODEV; |
| if (!(*vlan)->ieee80211_ptr) |
| return -EINVAL; |
| if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) |
| return -EINVAL; |
| if (!netif_running(*vlan)) |
| return -ENETDOWN; |
| } |
| return 0; |
| } |
| |
| static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| struct station_parameters params; |
| u8 *mac_addr = NULL; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| params.listen_interval = -1; |
| params.plink_state = -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]); |
| |
| if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) |
| params.plink_state = |
| nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); |
| |
| err = get_vlan(info, rdev, ¶ms.vlan); |
| if (err) |
| goto out; |
| |
| /* validate settings */ |
| err = 0; |
| |
| switch (dev->ieee80211_ptr->iftype) { |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_AP_VLAN: |
| case NL80211_IFTYPE_P2P_GO: |
| /* disallow mesh-specific things */ |
| if (params.plink_action) |
| err = -EINVAL; |
| break; |
| case NL80211_IFTYPE_P2P_CLIENT: |
| 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.sta_flags_mask & |
| ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | |
| BIT(NL80211_STA_FLAG_MFP) | |
| BIT(NL80211_STA_FLAG_AUTHORIZED))) |
| err = -EINVAL; |
| break; |
| default: |
| err = -EINVAL; |
| } |
| |
| if (err) |
| goto out; |
| |
| if (!rdev->ops->change_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms); |
| |
| out: |
| if (params.vlan) |
| dev_put(params.vlan); |
| |
| return err; |
| } |
| |
| static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| 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; |
| |
| if (!info->attrs[NL80211_ATTR_STA_AID]) |
| 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]); |
| |
| 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 (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
| params.plink_action = |
| nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); |
| |
| if (parse_station_flags(info, ¶ms)) |
| return -EINVAL; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EINVAL; |
| |
| err = get_vlan(info, rdev, ¶ms.vlan); |
| if (err) |
| goto out; |
| |
| /* validate settings */ |
| err = 0; |
| |
| if (!rdev->ops->add_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms); |
| |
| out: |
| if (params.vlan) |
| dev_put(params.vlan); |
| return err; |
| } |
| |
| static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u8 *mac_addr = NULL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EINVAL; |
| |
| if (!rdev->ops->del_station) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); |
| } |
| |
| 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); |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation); |
| |
| 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_SN) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN, |
| pinfo->sn); |
| 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 path_idx = cb->args[1]; |
| int err; |
| |
| err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); |
| if (err) |
| return err; |
| |
| if (!dev->ops->dump_mpath) { |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| 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: |
| nl80211_finish_netdev_dump(dev); |
| return err; |
| } |
| |
| static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| struct net_device *dev = info->user_ptr[1]; |
| 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]); |
| |
| if (!rdev->ops->get_mpath) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) |
| return -EOPNOTSUPP; |
| |
| err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo); |
| if (err) |
| return err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, |
| dev, dst, next_hop, &pinfo) < 0) { |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| return genlmsg_reply(msg, info); |
| } |
| |
| static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| 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]); |
| |
| if (!rdev->ops->change_mpath) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); |
| } |
| |
| static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| 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]); |
| |
| if (!rdev->ops->add_mpath) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); |
| } |
| |
| static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u8 *dst = NULL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (!rdev->ops->del_mpath) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->del_mpath(&rdev->wiphy, dev, dst); |
| } |
| |
| static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| 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; |
| params.ap_isolate = -1; |
| params.ht_opmode = -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]); |
| } |
| if (info->attrs[NL80211_ATTR_AP_ISOLATE]) |
| params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); |
| if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) |
| params.ht_opmode = |
| nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); |
| |
| if (!rdev->ops->change_bss) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); |
| } |
| |
| 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]); |
| |
| r = regulatory_hint_user(data); |
| |
| return r; |
| } |
| |
| static int nl80211_get_mesh_config(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct mesh_config cur_params; |
| int err = 0; |
| void *hdr; |
| struct nlattr *pinfoattr; |
| struct sk_buff *msg; |
| |
| if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) |
| return -EOPNOTSUPP; |
| |
| if (!rdev->ops->get_mesh_config) |
| return -EOPNOTSUPP; |
| |
| wdev_lock(wdev); |
| /* If not connected, get default parameters */ |
| if (!wdev->mesh_id_len) |
| memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); |
| else |
| err = rdev->ops->get_mesh_config(&rdev->wiphy, dev, |
| &cur_params); |
| wdev_unlock(wdev); |
| |
| if (err) |
| return err; |
| |
| /* Draw up a netlink message to send back */ |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_GET_MESH_CONFIG); |
| if (!hdr) |
| goto out; |
| pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); |
| 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_ELEMENT_TTL, |
| cur_params.element_ttl); |
| 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_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, |
| cur_params.dot11MeshHWMPRootMode); |
| nla_nest_end(msg, pinfoattr); |
| genlmsg_end(msg, hdr); |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| out: |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { |
| [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_ELEMENT_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 const struct nla_policy |
| nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { |
| [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, |
| [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, |
| [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, |
| [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_DATA_LEN }, |
| [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, |
| }; |
| |
| static int nl80211_parse_mesh_config(struct genl_info *info, |
| struct mesh_config *cfg, |
| u32 *mask_out) |
| { |
| struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; |
| u32 mask = 0; |
| |
| #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);\ |
| |
| |
| if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) |
| return -EINVAL; |
| if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, |
| info->attrs[NL80211_ATTR_MESH_CONFIG], |
| nl80211_meshconf_params_policy)) |
| return -EINVAL; |
| |
| /* 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 */ |
| 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, element_ttl, |
| mask, NL80211_MESHCONF_ELEMENT_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); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, |
| dot11MeshHWMPRootMode, mask, |
| NL80211_MESHCONF_HWMP_ROOTMODE, |
| nla_get_u8); |
| if (mask_out) |
| *mask_out = mask; |
| |
| return 0; |
| |
| #undef FILL_IN_MESH_PARAM_IF_SET |
| } |
| |
| static int nl80211_parse_mesh_setup(struct genl_info *info, |
| struct mesh_setup *setup) |
| { |
| struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; |
| |
| if (!info->attrs[NL80211_ATTR_MESH_SETUP]) |
| return -EINVAL; |
| if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, |
| info->attrs[NL80211_ATTR_MESH_SETUP], |
| nl80211_mesh_setup_params_policy)) |
| return -EINVAL; |
| |
| if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) |
| setup->path_sel_proto = |
| (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? |
| IEEE80211_PATH_PROTOCOL_VENDOR : |
| IEEE80211_PATH_PROTOCOL_HWMP; |
| |
| if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) |
| setup->path_metric = |
| (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? |
| IEEE80211_PATH_METRIC_VENDOR : |
| IEEE80211_PATH_METRIC_AIRTIME; |
| |
| |
| if (tb[NL80211_MESH_SETUP_IE]) { |
| struct nlattr *ieattr = |
| tb[NL80211_MESH_SETUP_IE]; |
| if (!is_valid_ie_attr(ieattr)) |
| return -EINVAL; |
| setup->ie = nla_data(ieattr); |
| setup->ie_len = nla_len(ieattr); |
| } |
| setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); |
| setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); |
| |
| return 0; |
| } |
| |
| static int nl80211_update_mesh_config(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct mesh_config cfg; |
| u32 mask; |
| int err; |
| |
| if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) |
| return -EOPNOTSUPP; |
| |
| if (!rdev->ops->update_mesh_config) |
| return -EOPNOTSUPP; |
| |
| err = nl80211_parse_mesh_config(info, &cfg, &mask); |
| if (err) |
| return err; |
| |
| wdev_lock(wdev); |
| if (!wdev->mesh_id_len) |
| err = -ENOLINK; |
| |
| if (!err) |
| err = rdev->ops->update_mesh_config(&rdev->wiphy, dev, |
| mask, &cfg); |
| |
| wdev_unlock(wdev); |
| |
| return err; |
| } |
| |
| 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 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_reply(msg, info); |
| goto out; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| put_failure: |
| nlmsg_free(msg); |
| 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 *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| 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; |
| |
| wiphy = &rdev->wiphy; |
| |
| if (!rdev->ops->scan) |
| return -EOPNOTSUPP; |
| |
| if (rdev->scan_req) |
| return -EBUSY; |
| |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| n_channels = validate_scan_freqs( |
| info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); |
| if (!n_channels) |
| return -EINVAL; |
| } 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) |
| return -EINVAL; |
| |
| 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) |
| return -EINVAL; |
| |
| request = kzalloc(sizeof(*request) |
| + sizeof(*ssid) * n_ssids |
| + sizeof(channel) * n_channels |
| + ie_len, GFP_KERNEL); |
| if (!request) |
| return -ENOMEM; |
| |
| 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); |
| } |
| |
| i = 0; |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| /* user specified, bail out if channel not found */ |
| nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { |
| struct ieee80211_channel *chan; |
| |
| chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); |
| |
| if (!chan) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| |
| /* ignore disabled channels */ |
| if (chan->flags & IEEE80211_CHAN_DISABLED) |
| continue; |
| |
| request->channels[i] = chan; |
| i++; |
| } |
| } else { |
| /* all channels */ |
| 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++) { |
| struct ieee80211_channel *chan; |
| |
| chan = &wiphy->bands[band]->channels[j]; |
| |
| if (chan->flags & IEEE80211_CHAN_DISABLED) |
| continue; |
| |
| request->channels[i] = chan; |
| i++; |
| } |
| } |
| } |
| |
| if (!i) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| |
| request->n_channels = 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->dev = dev; |
| request->wiphy = &rdev->wiphy; |
| |
| rdev->scan_req = request; |
| err = rdev->ops->scan(&rdev->wiphy, dev, request); |
| |
| if (!err) { |
| nl80211_send_scan_start(rdev, dev); |
| dev_hold(dev); |
| } else { |
| out_free: |
| rdev->scan_req = NULL; |
| kfree(request); |
| } |
| |
| return err; |
| } |
| |
| static int nl80211_start_sched_scan(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_sched_scan_request *request; |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct cfg80211_ssid *ssid; |
| struct ieee80211_channel *channel; |
| struct nlattr *attr; |
| struct wiphy *wiphy; |
| int err, tmp, n_ssids = 0, n_channels, i; |
| u32 interval; |
| enum ieee80211_band band; |
| size_t ie_len; |
| |
| if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || |
| !rdev->ops->sched_scan_start) |
| return -EOPNOTSUPP; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (rdev->sched_scan_req) |
| return -EINPROGRESS; |
| |
| if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) |
| return -EINVAL; |
| |
| interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); |
| if (interval == 0) |
| return -EINVAL; |
| |
| wiphy = &rdev->wiphy; |
| |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| n_channels = validate_scan_freqs( |
| info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); |
| if (!n_channels) |
| return -EINVAL; |
| } 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) |
| return -EINVAL; |
| |
| 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) |
| return -EINVAL; |
| |
| request = kzalloc(sizeof(*request) |
| + sizeof(*ssid) * n_ssids |
| + sizeof(channel) * n_channels |
| + ie_len, GFP_KERNEL); |
| if (!request) |
| return -ENOMEM; |
| |
| 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); |
| } |
| |
| i = 0; |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| /* user specified, bail out if channel not found */ |
| nla_for_each_nested(attr, |
| info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], |
| tmp) { |
| struct ieee80211_channel *chan; |
| |
| chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); |
| |
| if (!chan) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| |
| /* ignore disabled channels */ |
| if (chan->flags & IEEE80211_CHAN_DISABLED) |
| continue; |
| |
| request->channels[i] = chan; |
| i++; |
| } |
| } else { |
| /* all channels */ |
| 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++) { |
| struct ieee80211_channel *chan; |
| |
| chan = &wiphy->bands[band]->channels[j]; |
| |
| if (chan->flags & IEEE80211_CHAN_DISABLED) |
| continue; |
| |
| request->channels[i] = chan; |
| i++; |
| } |
| } |
| } |
| |
| if (!i) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| |
| request->n_channels = 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->dev = dev; |
| request->wiphy = &rdev->wiphy; |
| request->interval = interval; |
| |
| err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request); |
| if (!err) { |
| rdev->sched_scan_req = request; |
| nl80211_send_sched_scan(rdev, dev, |
| NL80211_CMD_START_SCHED_SCAN); |
| goto out; |
| } |
| |
| out_free: |
| kfree(request); |
| out: |
| return err; |
| } |
| |
| static int nl80211_stop_sched_scan(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| |
| if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || |
| !rdev->ops->sched_scan_stop) |
| return -EOPNOTSUPP; |
| |
| return __cfg80211_stop_sched_scan(rdev, false); |
| } |
| |
| static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev, |
| struct cfg80211_internal_bss *intbss) |
| { |
| struct cfg80211_bss *res = &intbss->pub; |
| void *hdr; |
| struct nlattr *bss; |
| int i; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, |
| NL80211_CMD_NEW_SCAN_RESULTS); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->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->beacon_ies && res->len_beacon_ies && |
| res->beacon_ies != res->information_elements) |
| NLA_PUT(msg, NL80211_BSS_BEACON_IES, |
| res->len_beacon_ies, res->beacon_ies); |
| 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); |
| NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO, |
| jiffies_to_msecs(jiffies - intbss->ts)); |
| |
| 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; |
| } |
| |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_P2P_CLIENT: |
| case NL80211_IFTYPE_STATION: |
| if (intbss == wdev->current_bss) |
| NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
| NL80211_BSS_STATUS_ASSOCIATED); |
| else for (i = 0; i < MAX_AUTH_BSSES; i++) { |
| if (intbss != wdev->auth_bsses[i]) |
| continue; |
| NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
| NL80211_BSS_STATUS_AUTHENTICATED); |
| break; |
| } |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| if (intbss == wdev->current_bss) |
| NLA_PUT_U32(msg, NL80211_BSS_STATUS, |
| NL80211_BSS_STATUS_IBSS_JOINED); |
| 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 *rdev; |
| struct net_device *dev; |
| struct cfg80211_internal_bss *scan; |
| struct wireless_dev *wdev; |
| int start = cb->args[1], idx = 0; |
| int err; |
| |
| err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev); |
| if (err) |
| return err; |
| |
| wdev = dev->ieee80211_ptr; |
| |
| wdev_lock(wdev); |
| spin_lock_bh(&rdev->bss_lock); |
| cfg80211_bss_expire(rdev); |
| |
| list_for_each_entry(scan, &rdev->bss_list, list) { |
| if (++idx <= start) |
| continue; |
| if (nl80211_send_bss(skb, |
| NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| rdev, wdev, scan) < 0) { |
| idx--; |
| break; |
| } |
| } |
| |
| spin_unlock_bh(&rdev->bss_lock); |
| wdev_unlock(wdev); |
| |
| cb->args[1] = idx; |
| nl80211_finish_netdev_dump(rdev); |
| |
| return skb->len; |
| } |
| |
| static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, |
| int flags, struct net_device *dev, |
| struct survey_info *survey) |
| { |
| void *hdr; |
| struct nlattr *infoattr; |
| |
| /* Survey without a channel doesn't make sense */ |
| if (!survey->channel) |
| return -EINVAL; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, |
| NL80211_CMD_NEW_SURVEY_RESULTS); |
| if (!hdr) |
| return -ENOMEM; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| |
| infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); |
| if (!infoattr) |
| goto nla_put_failure; |
| |
| NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY, |
| survey->channel->center_freq); |
| if (survey->filled & SURVEY_INFO_NOISE_DBM) |
| NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE, |
| survey->noise); |
| if (survey->filled & SURVEY_INFO_IN_USE) |
| NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE); |
| if (survey->filled & SURVEY_INFO_CHANNEL_TIME) |
| NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, |
| survey->channel_time); |
| if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) |
| NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, |
| survey->channel_time_busy); |
| if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) |
| NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, |
| survey->channel_time_ext_busy); |
| if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) |
| NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, |
| survey->channel_time_rx); |
| if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) |
| NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, |
| survey->channel_time_tx); |
| |
| nla_nest_end(msg, infoattr); |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_survey(struct sk_buff *skb, |
| struct netlink_callback *cb) |
| { |
| struct survey_info survey; |
| struct cfg80211_registered_device *dev; |
| struct net_device *netdev; |
| int survey_idx = cb->args[1]; |
| int res; |
| |
| res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); |
| if (res) |
| return res; |
| |
| if (!dev->ops->dump_survey) { |
| res = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| while (1) { |
| res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx, |
| &survey); |
| if (res == -ENOENT) |
| break; |
| if (res) |
| goto out_err; |
| |
| if (nl80211_send_survey(skb, |
| NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| netdev, |
| &survey) < 0) |
| goto out; |
| survey_idx++; |
| } |
| |
| out: |
| cb->args[1] = survey_idx; |
| res = skb->len; |
| out_err: |
| nl80211_finish_netdev_dump(dev); |
| return res; |
| } |
| |
| static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type) |
| { |
| return auth_type <= NL80211_AUTHTYPE_MAX; |
| } |
| |
| static bool nl80211_valid_wpa_versions(u32 wpa_versions) |
| { |
| return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | |
| NL80211_WPA_VERSION_2)); |
| } |
| |
| static bool nl80211_valid_akm_suite(u32 akm) |
| { |
| return akm == WLAN_AKM_SUITE_8021X || |
| akm == WLAN_AKM_SUITE_PSK; |
| } |
| |
| static bool nl80211_valid_cipher_suite(u32 cipher) |
| { |
| return cipher == WLAN_CIPHER_SUITE_WEP40 || |
| cipher == WLAN_CIPHER_SUITE_WEP104 || |
| cipher == WLAN_CIPHER_SUITE_TKIP || |
| cipher == WLAN_CIPHER_SUITE_CCMP || |
| cipher == WLAN_CIPHER_SUITE_AES_CMAC; |
| } |
| |
| |
| static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct ieee80211_channel *chan; |
| const u8 *bssid, *ssid, *ie = NULL; |
| int err, ssid_len, ie_len = 0; |
| enum nl80211_auth_type auth_type; |
| struct key_parse key; |
| bool local_state_change; |
| |
| 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; |
| |
| if (!info->attrs[NL80211_ATTR_SSID]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
| return -EINVAL; |
| |
| err = nl80211_parse_key(info, &key); |
| if (err) |
| return err; |
| |
| if (key.idx >= 0) { |
| if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) |
| return -EINVAL; |
| if (!key.p.key || !key.p.key_len) |
| return -EINVAL; |
| if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || |
| key.p.key_len != WLAN_KEY_LEN_WEP40) && |
| (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || |
| key.p.key_len != WLAN_KEY_LEN_WEP104)) |
| return -EINVAL; |
| if (key.idx > 4) |
| return -EINVAL; |
| } else { |
| key.p.key_len = 0; |
| key.p.key = NULL; |
| } |
| |
| if (key.idx >= 0) { |
| int i; |
| bool ok = false; |
| for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { |
| if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { |
| ok = true; |
| break; |
| } |
| } |
| if (!ok) |
| return -EINVAL; |
| } |
| |
| if (!rdev->ops->auth) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| chan = ieee80211_get_channel(&rdev->wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) |
| return -EINVAL; |
| |
| ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); |
| if (!nl80211_valid_auth_type(auth_type)) |
| return -EINVAL; |
| |
| local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
| |
| return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, |
| ssid, ssid_len, ie, ie_len, |
| key.p.key, key.p.key_len, key.idx, |
| local_state_change); |
| } |
| |
| static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, |
| struct genl_info *info, |
| struct cfg80211_crypto_settings *settings, |
| int cipher_limit) |
| { |
| memset(settings, 0, sizeof(*settings)); |
| |
| settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; |
| |
| if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { |
| u16 proto; |
| proto = nla_get_u16( |
| info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); |
| settings->control_port_ethertype = cpu_to_be16(proto); |
| if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && |
| proto != ETH_P_PAE) |
| return -EINVAL; |
| if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) |
| settings->control_port_no_encrypt = true; |
| } else |
| settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); |
| |
| if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { |
| void *data; |
| int len, i; |
| |
| data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); |
| len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); |
| settings->n_ciphers_pairwise = len / sizeof(u32); |
| |
| if (len % sizeof(u32)) |
| return -EINVAL; |
| |
| if (settings->n_ciphers_pairwise > cipher_limit) |
| return -EINVAL; |
| |
| memcpy(settings->ciphers_pairwise, data, len); |
| |
| for (i = 0; i < settings->n_ciphers_pairwise; i++) |
| if (!nl80211_valid_cipher_suite( |
| settings->ciphers_pairwise[i])) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { |
| settings->cipher_group = |
| nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); |
| if (!nl80211_valid_cipher_suite(settings->cipher_group)) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { |
| settings->wpa_versions = |
| nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); |
| if (!nl80211_valid_wpa_versions(settings->wpa_versions)) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_AKM_SUITES]) { |
| void *data; |
| int len, i; |
| |
| data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); |
| len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); |
| settings->n_akm_suites = len / sizeof(u32); |
| |
| if (len % sizeof(u32)) |
| return -EINVAL; |
| |
| memcpy(settings->akm_suites, data, len); |
| |
| for (i = 0; i < settings->n_ciphers_pairwise; i++) |
| if (!nl80211_valid_akm_suite(settings->akm_suites[i])) |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct cfg80211_crypto_settings crypto; |
| struct ieee80211_channel *chan; |
| const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL; |
| int err, ssid_len, ie_len = 0; |
| bool use_mfp = false; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC] || |
| !info->attrs[NL80211_ATTR_SSID] || |
| !info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
| return -EINVAL; |
| |
| if (!rdev->ops->assoc) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| chan = ieee80211_get_channel(&rdev->wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) |
| return -EINVAL; |
| |
| ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_USE_MFP]) { |
| enum nl80211_mfp mfp = |
| nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); |
| if (mfp == NL80211_MFP_REQUIRED) |
| use_mfp = true; |
| else if (mfp != NL80211_MFP_NO) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_PREV_BSSID]) |
| prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); |
| |
| err = nl80211_crypto_settings(rdev, info, &crypto, 1); |
| if (!err) |
| err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, |
| ssid, ssid_len, ie, ie_len, use_mfp, |
| &crypto); |
| |
| return err; |
| } |
| |
| static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| const u8 *ie = NULL, *bssid; |
| int ie_len = 0; |
| u16 reason_code; |
| bool local_state_change; |
| |
| 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; |
| |
| if (!rdev->ops->deauth) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
| if (reason_code == 0) { |
| /* Reason Code 0 is reserved */ |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
| |
| return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, |
| local_state_change); |
| } |
| |
| static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| const u8 *ie = NULL, *bssid; |
| int ie_len = 0; |
| u16 reason_code; |
| bool local_state_change; |
| |
| 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; |
| |
| if (!rdev->ops->disassoc) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
| if (reason_code == 0) { |
| /* Reason Code 0 is reserved */ |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; |
| |
| return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, |
| local_state_change); |
| } |
| |
| static bool |
| nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, |
| int mcast_rate[IEEE80211_NUM_BANDS], |
| int rateval) |
| { |
| struct wiphy *wiphy = &rdev->wiphy; |
| bool found = false; |
| int band, i; |
| |
| for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| struct ieee80211_supported_band *sband; |
| |
| sband = wiphy->bands[band]; |
| if (!sband) |
| continue; |
| |
| for (i = 0; i < sband->n_bitrates; i++) { |
| if (sband->bitrates[i].bitrate == rateval) { |
| mcast_rate[band] = i + 1; |
| found = true; |
| break; |
| } |
| } |
| } |
| |
| return found; |
| } |
| |
| static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct cfg80211_ibss_params ibss; |
| struct wiphy *wiphy; |
| struct cfg80211_cached_keys *connkeys = NULL; |
| 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; |
| } |
| |
| if (!rdev->ops->join_ibss) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) |
| return -EOPNOTSUPP; |
| |
| wiphy = &rdev->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) |
| return -EINVAL; |
| |
| ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; |
| ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; |
| |
| if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
| u8 *rates = |
| nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
| int n_rates = |
| nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
| struct ieee80211_supported_band *sband = |
| wiphy->bands[ibss.channel->band]; |
| int i, j; |
| |
| if (n_rates == 0) |
| return -EINVAL; |
| |
| for (i = 0; i < n_rates; i++) { |
| int rate = (rates[i] & 0x7f) * 5; |
| bool found = false; |
| |
| for (j = 0; j < sband->n_bitrates; j++) { |
| if (sband->bitrates[j].bitrate == rate) { |
| found = true; |
| ibss.basic_rates |= BIT(j); |
| break; |
| } |
| } |
| if (!found) |
| return -EINVAL; |
| } |
| } |
| |
| if (info->attrs[NL80211_ATTR_MCAST_RATE] && |
| !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, |
| nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) |
| return -EINVAL; |
| |
| if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { |
| connkeys = nl80211_parse_connkeys(rdev, |
| info->attrs[NL80211_ATTR_KEYS]); |
| if (IS_ERR(connkeys)) |
| return PTR_ERR(connkeys); |
| } |
| |
| err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); |
| if (err) |
| kfree(connkeys); |
| return err; |
| } |
| |
| static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| if (!rdev->ops->leave_ibss) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) |
| return -EOPNOTSUPP; |
| |
| return cfg80211_leave_ibss(rdev, dev, false); |
| } |
| |
| #ifdef CONFIG_NL80211_TESTMODE |
| static struct genl_multicast_group nl80211_testmode_mcgrp = { |
| .name = "testmode", |
| }; |
| |
| static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int err; |
| |
| if (!info->attrs[NL80211_ATTR_TESTDATA]) |
| return -EINVAL; |
| |
| err = -EOPNOTSUPP; |
| if (rdev->ops->testmode_cmd) { |
| rdev->testmode_info = info; |
| err = rdev->ops->testmode_cmd(&rdev->wiphy, |
| nla_data(info->attrs[NL80211_ATTR_TESTDATA]), |
| nla_len(info->attrs[NL80211_ATTR_TESTDATA])); |
| rdev->testmode_info = NULL; |
| } |
| |
| return err; |
| } |
| |
| static struct sk_buff * |
| __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, |
| int approxlen, u32 pid, u32 seq, gfp_t gfp) |
| { |
| struct sk_buff *skb; |
| void *hdr; |
| struct nlattr *data; |
| |
| skb = nlmsg_new(approxlen + 100, gfp); |
| if (!skb) |
| return NULL; |
| |
| hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE); |
| if (!hdr) { |
| kfree_skb(skb); |
| return NULL; |
| } |
| |
| NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| data = nla_nest_start(skb, NL80211_ATTR_TESTDATA); |
| |
| ((void **)skb->cb)[0] = rdev; |
| ((void **)skb->cb)[1] = hdr; |
| ((void **)skb->cb)[2] = data; |
| |
| return skb; |
| |
| nla_put_failure: |
| kfree_skb(skb); |
| return NULL; |
| } |
| |
| struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, |
| int approxlen) |
| { |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| if (WARN_ON(!rdev->testmode_info)) |
| return NULL; |
| |
| return __cfg80211_testmode_alloc_skb(rdev, approxlen, |
| rdev->testmode_info->snd_pid, |
| rdev->testmode_info->snd_seq, |
| GFP_KERNEL); |
| } |
| EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb); |
| |
| int cfg80211_testmode_reply(struct sk_buff *skb) |
| { |
| struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; |
| void *hdr = ((void **)skb->cb)[1]; |
| struct nlattr *data = ((void **)skb->cb)[2]; |
| |
| if (WARN_ON(!rdev->testmode_info)) { |
| kfree_skb(skb); |
| return -EINVAL; |
| } |
| |
| nla_nest_end(skb, data); |
| genlmsg_end(skb, hdr); |
| return genlmsg_reply(skb, rdev->testmode_info); |
| } |
| EXPORT_SYMBOL(cfg80211_testmode_reply); |
| |
| struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, |
| int approxlen, gfp_t gfp) |
| { |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb); |
| |
| void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) |
| { |
| void *hdr = ((void **)skb->cb)[1]; |
| struct nlattr *data = ((void **)skb->cb)[2]; |
| |
| nla_nest_end(skb, data); |
| genlmsg_end(skb, hdr); |
| genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_testmode_event); |
| #endif |
| |
| static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct cfg80211_connect_params connect; |
| struct wiphy *wiphy; |
| struct cfg80211_cached_keys *connkeys = NULL; |
| int err; |
| |
| memset(&connect, 0, sizeof(connect)); |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_SSID] || |
| !nla_len(info->attrs[NL80211_ATTR_SSID])) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { |
| connect.auth_type = |
| nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); |
| if (!nl80211_valid_auth_type(connect.auth_type)) |
| return -EINVAL; |
| } else |
| connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
| |
| connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; |
| |
| err = nl80211_crypto_settings(rdev, info, &connect.crypto, |
| NL80211_MAX_NR_CIPHER_SUITES); |
| if (err) |
| return err; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| wiphy = &rdev->wiphy; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
| connect.channel = |
| ieee80211_get_channel(wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!connect.channel || |
| connect.channel->flags & IEEE80211_CHAN_DISABLED) |
| return -EINVAL; |
| } |
| |
| if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { |
| connkeys = nl80211_parse_connkeys(rdev, |
| info->attrs[NL80211_ATTR_KEYS]); |
| if (IS_ERR(connkeys)) |
| return PTR_ERR(connkeys); |
| } |
| |
| err = cfg80211_connect(rdev, dev, &connect, connkeys); |
| if (err) |
| kfree(connkeys); |
| return err; |
| } |
| |
| static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u16 reason; |
| |
| if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
| reason = WLAN_REASON_DEAUTH_LEAVING; |
| else |
| reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
| |
| if (reason == 0) |
| return -EINVAL; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| return cfg80211_disconnect(rdev, dev, reason, true); |
| } |
| |
| static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net *net; |
| int err; |
| u32 pid; |
| |
| if (!info->attrs[NL80211_ATTR_PID]) |
| return -EINVAL; |
| |
| pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); |
| |
| net = get_net_ns_by_pid(pid); |
| if (IS_ERR(net)) |
| return PTR_ERR(net); |
| |
| err = 0; |
| |
| /* check if anything to do */ |
| if (!net_eq(wiphy_net(&rdev->wiphy), net)) |
| err = cfg80211_switch_netns(rdev, net); |
| |
| put_net(net); |
| return err; |
| } |
| |
| static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, |
| struct cfg80211_pmksa *pmksa) = NULL; |
| struct net_device *dev = info->user_ptr[1]; |
| struct cfg80211_pmksa pmksa; |
| |
| memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_PMKID]) |
| return -EINVAL; |
| |
| pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); |
| pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| switch (info->genlhdr->cmd) { |
| case NL80211_CMD_SET_PMKSA: |
| rdev_ops = rdev->ops->set_pmksa; |
| break; |
| case NL80211_CMD_DEL_PMKSA: |
| rdev_ops = rdev->ops->del_pmksa; |
| break; |
| default: |
| WARN_ON(1); |
| break; |
| } |
| |
| if (!rdev_ops) |
| return -EOPNOTSUPP; |
| |
| return rdev_ops(&rdev->wiphy, dev, &pmksa); |
| } |
| |
| static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| if (!rdev->ops->flush_pmksa) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->flush_pmksa(&rdev->wiphy, dev); |
| } |
| |
| static int nl80211_remain_on_channel(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct ieee80211_channel *chan; |
| struct sk_buff *msg; |
| void *hdr; |
| u64 cookie; |
| enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
| u32 freq, duration; |
| int err; |
| |
| if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || |
| !info->attrs[NL80211_ATTR_DURATION]) |
| return -EINVAL; |
| |
| duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); |
| |
| /* |
| * We should be on that channel for at least one jiffie, |
| * and more than 5 seconds seems excessive. |
| */ |
| if (!duration || !msecs_to_jiffies(duration) || |
| duration > rdev->wiphy.max_remain_on_channel_duration) |
| return -EINVAL; |
| |
| if (!rdev->ops->remain_on_channel) |
| return -EOPNOTSUPP; |
| |
| 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) |
| return -EINVAL; |
| } |
| |
| freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
| chan = rdev_freq_to_chan(rdev, freq, channel_type); |
| if (chan == NULL) |
| return -EINVAL; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_REMAIN_ON_CHANNEL); |
| |
| if (IS_ERR(hdr)) { |
| err = PTR_ERR(hdr); |
| goto free_msg; |
| } |
| |
| err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan, |
| channel_type, duration, &cookie); |
| |
| if (err) |
| goto free_msg; |
| |
| NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
| |
| genlmsg_end(msg, hdr); |
| |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| err = -ENOBUFS; |
| free_msg: |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u64 cookie; |
| |
| if (!info->attrs[NL80211_ATTR_COOKIE]) |
| return -EINVAL; |
| |
| if (!rdev->ops->cancel_remain_on_channel) |
| return -EOPNOTSUPP; |
| |
| cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); |
| |
| return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); |
| } |
| |
| static u32 rateset_to_mask(struct ieee80211_supported_band *sband, |
| u8 *rates, u8 rates_len) |
| { |
| u8 i; |
| u32 mask = 0; |
| |
| for (i = 0; i < rates_len; i++) { |
| int rate = (rates[i] & 0x7f) * 5; |
| int ridx; |
| for (ridx = 0; ridx < sband->n_bitrates; ridx++) { |
| struct ieee80211_rate *srate = |
| &sband->bitrates[ridx]; |
| if (rate == srate->bitrate) { |
| mask |= 1 << ridx; |
| break; |
| } |
| } |
| if (ridx == sband->n_bitrates) |
| return 0; /* rate not found */ |
| } |
| |
| return mask; |
| } |
| |
| static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { |
| [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, |
| .len = NL80211_MAX_SUPP_RATES }, |
| }; |
| |
| static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct nlattr *tb[NL80211_TXRATE_MAX + 1]; |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct cfg80211_bitrate_mask mask; |
| int rem, i; |
| struct net_device *dev = info->user_ptr[1]; |
| struct nlattr *tx_rates; |
| struct ieee80211_supported_band *sband; |
| |
| if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) |
| return -EINVAL; |
| |
| if (!rdev->ops->set_bitrate_mask) |
| return -EOPNOTSUPP; |
| |
| memset(&mask, 0, sizeof(mask)); |
| /* Default to all rates enabled */ |
| for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
| sband = rdev->wiphy.bands[i]; |
| mask.control[i].legacy = |
| sband ? (1 << sband->n_bitrates) - 1 : 0; |
| } |
| |
| /* |
| * The nested attribute uses enum nl80211_band as the index. This maps |
| * directly to the enum ieee80211_band values used in cfg80211. |
| */ |
| nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) |
| { |
| enum ieee80211_band band = nla_type(tx_rates); |
| if (band < 0 || band >= IEEE80211_NUM_BANDS) |
| return -EINVAL; |
| sband = rdev->wiphy.bands[band]; |
| if (sband == NULL) |
| return -EINVAL; |
| nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), |
| nla_len(tx_rates), nl80211_txattr_policy); |
| if (tb[NL80211_TXRATE_LEGACY]) { |
| mask.control[band].legacy = rateset_to_mask( |
| sband, |
| nla_data(tb[NL80211_TXRATE_LEGACY]), |
| nla_len(tb[NL80211_TXRATE_LEGACY])); |
| if (mask.control[band].legacy == 0) |
| return -EINVAL; |
| } |
| } |
| |
| return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); |
| } |
| |
| static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; |
| |
| if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_FRAME_TYPE]) |
| frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| /* not much point in registering if we can't reply */ |
| if (!rdev->ops->mgmt_tx) |
| return -EOPNOTSUPP; |
| |
| return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, |
| frame_type, |
| nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), |
| nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); |
| } |
| |
| static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct ieee80211_channel *chan; |
| enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
| bool channel_type_valid = false; |
| u32 freq; |
| int err; |
| void *hdr; |
| u64 cookie; |
| struct sk_buff *msg; |
| unsigned int wait = 0; |
| bool offchan; |
| |
| if (!info->attrs[NL80211_ATTR_FRAME] || |
| !info->attrs[NL80211_ATTR_WIPHY_FREQ]) |
| return -EINVAL; |
| |
| if (!rdev->ops->mgmt_tx) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| if (info->attrs[NL80211_ATTR_DURATION]) { |
| if (!rdev->ops->mgmt_tx_cancel_wait) |
| return -EINVAL; |
| wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); |
| } |
| |
| 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) |
| return -EINVAL; |
| channel_type_valid = true; |
| } |
| |
| offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; |
| |
| freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
| chan = rdev_freq_to_chan(rdev, freq, channel_type); |
| if (chan == NULL) |
| return -EINVAL; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_FRAME); |
| |
| if (IS_ERR(hdr)) { |
| err = PTR_ERR(hdr); |
| goto free_msg; |
| } |
| err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type, |
| channel_type_valid, wait, |
| nla_data(info->attrs[NL80211_ATTR_FRAME]), |
| nla_len(info->attrs[NL80211_ATTR_FRAME]), |
| &cookie); |
| if (err) |
| goto free_msg; |
| |
| NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
| |
| genlmsg_end(msg, hdr); |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| err = -ENOBUFS; |
| free_msg: |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| u64 cookie; |
| |
| if (!info->attrs[NL80211_ATTR_COOKIE]) |
| return -EINVAL; |
| |
| if (!rdev->ops->mgmt_tx_cancel_wait) |
| return -EOPNOTSUPP; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) |
| return -EOPNOTSUPP; |
| |
| cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); |
| |
| return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie); |
| } |
| |
| static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct wireless_dev *wdev; |
| struct net_device *dev = info->user_ptr[1]; |
| u8 ps_state; |
| bool state; |
| int err; |
| |
| if (!info->attrs[NL80211_ATTR_PS_STATE]) |
| return -EINVAL; |
| |
| ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); |
| |
| if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) |
| return -EINVAL; |
| |
| wdev = dev->ieee80211_ptr; |
| |
| if (!rdev->ops->set_power_mgmt) |
| return -EOPNOTSUPP; |
| |
| state = (ps_state == NL80211_PS_ENABLED) ? true : false; |
| |
| if (state == wdev->ps) |
| return 0; |
| |
| err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state, |
| wdev->ps_timeout); |
| if (!err) |
| wdev->ps = state; |
| return err; |
| } |
| |
| static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| enum nl80211_ps_state ps_state; |
| struct wireless_dev *wdev; |
| struct net_device *dev = info->user_ptr[1]; |
| struct sk_buff *msg; |
| void *hdr; |
| int err; |
| |
| wdev = dev->ieee80211_ptr; |
| |
| if (!rdev->ops->set_power_mgmt) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_GET_POWER_SAVE); |
| if (!hdr) { |
| err = -ENOBUFS; |
| goto free_msg; |
| } |
| |
| if (wdev->ps) |
| ps_state = NL80211_PS_ENABLED; |
| else |
| ps_state = NL80211_PS_DISABLED; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state); |
| |
| genlmsg_end(msg, hdr); |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| err = -ENOBUFS; |
| free_msg: |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| static struct nla_policy |
| nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { |
| [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, |
| [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, |
| [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, |
| }; |
| |
| static int nl80211_set_cqm_rssi(struct genl_info *info, |
| s32 threshold, u32 hysteresis) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct wireless_dev *wdev; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| if (threshold > 0) |
| return -EINVAL; |
| |
| wdev = dev->ieee80211_ptr; |
| |
| if (!rdev->ops->set_cqm_rssi_config) |
| return -EOPNOTSUPP; |
| |
| if (wdev->iftype != NL80211_IFTYPE_STATION && |
| wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) |
| return -EOPNOTSUPP; |
| |
| return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, |
| threshold, hysteresis); |
| } |
| |
| static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; |
| struct nlattr *cqm; |
| int err; |
| |
| cqm = info->attrs[NL80211_ATTR_CQM]; |
| if (!cqm) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, |
| nl80211_attr_cqm_policy); |
| if (err) |
| goto out; |
| |
| if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && |
| attrs[NL80211_ATTR_CQM_RSSI_HYST]) { |
| s32 threshold; |
| u32 hysteresis; |
| threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); |
| hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); |
| err = nl80211_set_cqm_rssi(info, threshold, hysteresis); |
| } else |
| err = -EINVAL; |
| |
| out: |
| return err; |
| } |
| |
| static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| struct mesh_config cfg; |
| struct mesh_setup setup; |
| int err; |
| |
| /* start with default */ |
| memcpy(&cfg, &default_mesh_config, sizeof(cfg)); |
| memcpy(&setup, &default_mesh_setup, sizeof(setup)); |
| |
| if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { |
| /* and parse parameters if given */ |
| err = nl80211_parse_mesh_config(info, &cfg, NULL); |
| if (err) |
| return err; |
| } |
| |
| if (!info->attrs[NL80211_ATTR_MESH_ID] || |
| !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) |
| return -EINVAL; |
| |
| setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
| setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
| |
| if (info->attrs[NL80211_ATTR_MESH_SETUP]) { |
| /* parse additional setup parameters if given */ |
| err = nl80211_parse_mesh_setup(info, &setup); |
| if (err) |
| return err; |
| } |
| |
| return cfg80211_join_mesh(rdev, dev, &setup, &cfg); |
| } |
| |
| static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct net_device *dev = info->user_ptr[1]; |
| |
| return cfg80211_leave_mesh(rdev, dev); |
| } |
| |
| static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct sk_buff *msg; |
| void *hdr; |
| |
| if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns) |
| return -EOPNOTSUPP; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_GET_WOWLAN); |
| if (!hdr) |
| goto nla_put_failure; |
| |
| if (rdev->wowlan) { |
| struct nlattr *nl_wowlan; |
| |
| nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); |
| if (!nl_wowlan) |
| goto nla_put_failure; |
| |
| if (rdev->wowlan->any) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY); |
| if (rdev->wowlan->disconnect) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); |
| if (rdev->wowlan->magic_pkt) |
| NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); |
| if (rdev->wowlan->n_patterns) { |
| struct nlattr *nl_pats, *nl_pat; |
| int i, pat_len; |
| |
| nl_pats = nla_nest_start(msg, |
| NL80211_WOWLAN_TRIG_PKT_PATTERN); |
| if (!nl_pats) |
| goto nla_put_failure; |
| |
| for (i = 0; i < rdev->wowlan->n_patterns; i++) { |
| nl_pat = nla_nest_start(msg, i + 1); |
| if (!nl_pat) |
| goto nla_put_failure; |
| pat_len = rdev->wowlan->patterns[i].pattern_len; |
| NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK, |
| DIV_ROUND_UP(pat_len, 8), |
| rdev->wowlan->patterns[i].mask); |
| NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN, |
| pat_len, |
| rdev->wowlan->patterns[i].pattern); |
| nla_nest_end(msg, nl_pat); |
| } |
| nla_nest_end(msg, nl_pats); |
| } |
| |
| nla_nest_end(msg, nl_wowlan); |
| } |
| |
| genlmsg_end(msg, hdr); |
| return genlmsg_reply(msg, info); |
| |
| nla_put_failure: |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev = info->user_ptr[0]; |
| struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; |
| struct cfg80211_wowlan no_triggers = {}; |
| struct cfg80211_wowlan new_triggers = {}; |
| struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan; |
| int err, i; |
| |
| if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns) |
| return -EOPNOTSUPP; |
| |
| if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) |
| goto no_triggers; |
| |
| err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, |
| nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), |
| nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), |
| nl80211_wowlan_policy); |
| if (err) |
| return err; |
| |
| if (tb[NL80211_WOWLAN_TRIG_ANY]) { |
| if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) |
| return -EINVAL; |
| new_triggers.any = true; |
| } |
| |
| if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { |
| if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) |
| return -EINVAL; |
| new_triggers.disconnect = true; |
| } |
| |
| if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { |
| if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) |
| return -EINVAL; |
| new_triggers.magic_pkt = true; |
| } |
| |
| if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { |
| struct nlattr *pat; |
| int n_patterns = 0; |
| int rem, pat_len, mask_len; |
| struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT]; |
| |
| nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], |
| rem) |
| n_patterns++; |
| if (n_patterns > wowlan->n_patterns) |
| return -EINVAL; |
| |
| new_triggers.patterns = kcalloc(n_patterns, |
| sizeof(new_triggers.patterns[0]), |
| GFP_KERNEL); |
| if (!new_triggers.patterns) |
| return -ENOMEM; |
| |
| new_triggers.n_patterns = n_patterns; |
| i = 0; |
| |
| nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], |
| rem) { |
| nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT, |
| nla_data(pat), nla_len(pat), NULL); |
| err = -EINVAL; |
| if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] || |
| !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]) |
| goto error; |
| pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]); |
| mask_len = DIV_ROUND_UP(pat_len, 8); |
| if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) != |
| mask_len) |
| goto error; |
| if (pat_len > wowlan->pattern_max_len || |
| pat_len < wowlan->pattern_min_len) |
| goto error; |
| |
| new_triggers.patterns[i].mask = |
| kmalloc(mask_len + pat_len, GFP_KERNEL); |
| if (!new_triggers.patterns[i].mask) { |
| err = -ENOMEM; |
| goto error; |
| } |
| new_triggers.patterns[i].pattern = |
| new_triggers.patterns[i].mask + mask_len; |
| memcpy(new_triggers.patterns[i].mask, |
| nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]), |
| mask_len); |
| new_triggers.patterns[i].pattern_len = pat_len; |
| memcpy(new_triggers.patterns[i].pattern, |
| nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]), |
| pat_len); |
| i++; |
| } |
| } |
| |
| if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) { |
| struct cfg80211_wowlan *ntrig; |
| ntrig = kmemdup(&new_triggers, sizeof(new_triggers), |
| GFP_KERNEL); |
| if (!ntrig) { |
| err = -ENOMEM; |
| goto error; |
| } |
| cfg80211_rdev_free_wowlan(rdev); |
| rdev->wowlan = ntrig; |
| } else { |
| no_triggers: |
| cfg80211_rdev_free_wowlan(rdev); |
| rdev->wowlan = NULL; |
| } |
| |
| return 0; |
| error: |
| for (i = 0; i < new_triggers.n_patterns; i++) |
| kfree(new_triggers.patterns[i].mask); |
| kfree(new_triggers.patterns); |
| return err; |
| } |
| |
| #define NL80211_FLAG_NEED_WIPHY 0x01 |
| #define NL80211_FLAG_NEED_NETDEV 0x02 |
| #define NL80211_FLAG_NEED_RTNL 0x04 |
| #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 |
| #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ |
| NL80211_FLAG_CHECK_NETDEV_UP) |
| |
| static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev; |
| struct net_device *dev; |
| int err; |
| bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; |
| |
| if (rtnl) |
| rtnl_lock(); |
| |
| if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { |
| rdev = cfg80211_get_dev_from_info(info); |
| if (IS_ERR(rdev)) { |
| if (rtnl) |
| rtnl_unlock(); |
| return PTR_ERR(rdev); |
| } |
| info->user_ptr[0] = rdev; |
| } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { |
| err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); |
| if (err) { |
| if (rtnl) |
| rtnl_unlock(); |
| return err; |
| } |
| if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && |
| !netif_running(dev)) { |
| cfg80211_unlock_rdev(rdev); |
| dev_put(dev); |
| if (rtnl) |
| rtnl_unlock(); |
| return -ENETDOWN; |
| } |
| info->user_ptr[0] = rdev; |
| info->user_ptr[1] = dev; |
| } |
| |
| return 0; |
| } |
| |
| static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| if (info->user_ptr[0]) |
| cfg80211_unlock_rdev(info->user_ptr[0]); |
| if (info->user_ptr[1]) |
| dev_put(info->user_ptr[1]); |
| if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) |
| rtnl_unlock(); |
| } |
| |
| 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 */ |
| .internal_flags = NL80211_FLAG_NEED_WIPHY, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_WIPHY, |
| .doit = nl80211_set_wiphy, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_INTERFACE, |
| .doit = nl80211_get_interface, |
| .dumpit = nl80211_dump_interface, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| .internal_flags = NL80211_FLAG_NEED_NETDEV, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_INTERFACE, |
| .doit = nl80211_set_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_INTERFACE, |
| .doit = nl80211_new_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_WIPHY | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_INTERFACE, |
| .doit = nl80211_del_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_KEY, |
| .doit = nl80211_get_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_KEY, |
| .doit = nl80211_set_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_KEY, |
| .doit = nl80211_new_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_KEY, |
| .doit = nl80211_del_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_addset_beacon, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_addset_beacon, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_del_beacon, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_STATION, |
| .doit = nl80211_get_station, |
| .dumpit = nl80211_dump_station, |
| .policy = nl80211_policy, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_STATION, |
| .doit = nl80211_set_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_STATION, |
| .doit = nl80211_new_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_STATION, |
| .doit = nl80211_del_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_MPATH, |
| .doit = nl80211_get_mpath, |
| .dumpit = nl80211_dump_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_MPATH, |
| .doit = nl80211_set_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_MPATH, |
| .doit = nl80211_new_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_MPATH, |
| .doit = nl80211_del_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_BSS, |
| .doit = nl80211_set_bss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .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_CONFIG, |
| .doit = nl80211_get_mesh_config, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_MESH_CONFIG, |
| .doit = nl80211_update_mesh_config, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_TRIGGER_SCAN, |
| .doit = nl80211_trigger_scan, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_SCAN, |
| .policy = nl80211_policy, |
| .dumpit = nl80211_dump_scan, |
| }, |
| { |
| .cmd = NL80211_CMD_START_SCHED_SCAN, |
| .doit = nl80211_start_sched_scan, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_STOP_SCHED_SCAN, |
| .doit = nl80211_stop_sched_scan, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_AUTHENTICATE, |
| .doit = nl80211_authenticate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_ASSOCIATE, |
| .doit = nl80211_associate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEAUTHENTICATE, |
| .doit = nl80211_deauthenticate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DISASSOCIATE, |
| .doit = nl80211_disassociate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_JOIN_IBSS, |
| .doit = nl80211_join_ibss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_LEAVE_IBSS, |
| .doit = nl80211_leave_ibss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| #ifdef CONFIG_NL80211_TESTMODE |
| { |
| .cmd = NL80211_CMD_TESTMODE, |
| .doit = nl80211_testmode_do, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_WIPHY | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| #endif |
| { |
| .cmd = NL80211_CMD_CONNECT, |
| .doit = nl80211_connect, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DISCONNECT, |
| .doit = nl80211_disconnect, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_WIPHY_NETNS, |
| .doit = nl80211_wiphy_netns, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_WIPHY | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_SURVEY, |
| .policy = nl80211_policy, |
| .dumpit = nl80211_dump_survey, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_PMKSA, |
| .doit = nl80211_setdel_pmksa, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_PMKSA, |
| .doit = nl80211_setdel_pmksa, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_FLUSH_PMKSA, |
| .doit = nl80211_flush_pmksa, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, |
| .doit = nl80211_remain_on_channel, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, |
| .doit = nl80211_cancel_remain_on_channel, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, |
| .doit = nl80211_set_tx_bitrate_mask, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_REGISTER_FRAME, |
| .doit = nl80211_register_mgmt, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_FRAME, |
| .doit = nl80211_tx_mgmt, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, |
| .doit = nl80211_tx_mgmt_cancel_wait, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_POWER_SAVE, |
| .doit = nl80211_set_power_save, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_POWER_SAVE, |
| .doit = nl80211_get_power_save, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_CQM, |
| .doit = nl80211_set_cqm, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_CHANNEL, |
| .doit = nl80211_set_channel, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_WDS_PEER, |
| .doit = nl80211_set_wds_peer, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_JOIN_MESH, |
| .doit = nl80211_join_mesh, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_LEAVE_MESH, |
| .doit = nl80211_leave_mesh, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_WOWLAN, |
| .doit = nl80211_get_wowlan, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| .internal_flags = NL80211_FLAG_NEED_WIPHY | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_WOWLAN, |
| .doit = nl80211_set_wowlan, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .internal_flags = NL80211_FLAG_NEED_WIPHY | |
| NL80211_FLAG_NEED_RTNL, |
| }, |
| }; |
| |
| 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_netns(wiphy_net(&rdev->wiphy), 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; |
| |
| ASSERT_RDEV_LOCK(rdev); |
| |
| 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; |
| } |
| |
| static int |
| nl80211_send_sched_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); |
| |
| 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_netns(wiphy_net(&rdev->wiphy), 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_netns(wiphy_net(&rdev->wiphy), 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_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_scan_mcgrp.id, GFP_KERNEL); |
| } |
| |
| void nl80211_send_sched_scan_results(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_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, |
| NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_scan_mcgrp.id, GFP_KERNEL); |
| } |
| |
| void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u32 cmd) |
| { |
| struct sk_buff *msg; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), 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; |
| } |
| |
| rcu_read_lock(); |
| genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, |
| GFP_ATOMIC); |
| rcu_read_unlock(); |
| |
| 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, 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, 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_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| 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, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_AUTHENTICATE, gfp); |
| } |
| |
| void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_ASSOCIATE, gfp); |
| } |
| |
| void nl80211_send_deauth(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_DEAUTHENTICATE, gfp); |
| } |
| |
| void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_DISASSOCIATE, gfp); |
| } |
| |
| void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp); |
| } |
| |
| void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len, gfp_t gfp) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_UNPROT_DISASSOCIATE, gfp); |
| } |
| |
| static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, int cmd, |
| const u8 *addr, 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, 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_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| 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, |
| gfp_t gfp) |
| { |
| nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, |
| addr, gfp); |
| } |
| |
| void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *addr, |
| gfp_t gfp) |
| { |
| nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, |
| addr, gfp); |
| } |
| |
| void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *bssid, |
| const u8 *req_ie, size_t req_ie_len, |
| const u8 *resp_ie, size_t resp_ie_len, |
| u16 status, gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); |
| 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 (bssid) |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); |
| NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status); |
| if (req_ie) |
| NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); |
| if (resp_ie) |
| NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| |
| } |
| |
| void nl80211_send_roamed(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *bssid, |
| const u8 *req_ie, size_t req_ie_len, |
| const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); |
| 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 (req_ie) |
| NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie); |
| if (resp_ie) |
| NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| |
| } |
| |
| void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u16 reason, |
| const u8 *ie, size_t ie_len, bool from_ap) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); |
| 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 (from_ap && reason) |
| NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason); |
| if (from_ap) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP); |
| if (ie) |
| NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, GFP_KERNEL); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| |
| } |
| |
| 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_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, |
| const u8 *macaddr, const u8* ie, u8 ie_len, |
| 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_NEW_PEER_CANDIDATE); |
| 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, macaddr); |
| if (ie_len && ie) |
| NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), 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, 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_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_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| 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; |
| } |
| |
| rcu_read_lock(); |
| genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id, |
| GFP_ATOMIC); |
| rcu_read_unlock(); |
| |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| static void nl80211_send_remain_on_chan_event( |
| int cmd, struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u64 cookie, |
| struct ieee80211_channel *chan, |
| enum nl80211_channel_type channel_type, |
| unsigned int duration, 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, 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_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type); |
| NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
| |
| if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL) |
| NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u64 cookie, |
| struct ieee80211_channel *chan, |
| enum nl80211_channel_type channel_type, |
| unsigned int duration, gfp_t gfp) |
| { |
| nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, |
| rdev, netdev, cookie, chan, |
| channel_type, duration, gfp); |
| } |
| |
| void nl80211_send_remain_on_channel_cancel( |
| struct cfg80211_registered_device *rdev, struct net_device *netdev, |
| u64 cookie, struct ieee80211_channel *chan, |
| enum nl80211_channel_type channel_type, gfp_t gfp) |
| { |
| nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, |
| rdev, netdev, cookie, chan, |
| channel_type, 0, gfp); |
| } |
| |
| void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *mac_addr, |
| struct station_info *sinfo, gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| } |
| |
| void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *mac_addr, |
| gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u32 nlpid, |
| int freq, const u8 *buf, size_t len, gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| int err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
| if (!msg) |
| return -ENOMEM; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return -ENOMEM; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); |
| NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); |
| |
| err = genlmsg_end(msg, hdr); |
| if (err < 0) { |
| nlmsg_free(msg); |
| return err; |
| } |
| |
| err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid); |
| if (err < 0) |
| return err; |
| return 0; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| return -ENOBUFS; |
| } |
| |
| void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, u64 cookie, |
| const u8 *buf, size_t len, bool ack, |
| 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_FRAME_TX_STATUS); |
| 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); |
| NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); |
| if (ack) |
| NLA_PUT_FLAG(msg, NL80211_ATTR_ACK); |
| |
| 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_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, |
| enum nl80211_cqm_rssi_threshold_event rssi_event, |
| gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| struct nlattr *pinfoattr; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); |
| 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); |
| |
| pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); |
| if (!pinfoattr) |
| goto nla_put_failure; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, |
| rssi_event); |
| |
| nla_nest_end(msg, pinfoattr); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void |
| nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *peer, |
| u32 num_packets, gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| struct nlattr *pinfoattr; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_GOODSIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); |
| 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, peer); |
| |
| pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); |
| if (!pinfoattr) |
| goto nla_put_failure; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets); |
| |
| nla_nest_end(msg, pinfoattr); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, |
| nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| static int nl80211_netlink_notify(struct notifier_block * nb, |
| unsigned long state, |
| void *_notify) |
| { |
| struct netlink_notify *notify = _notify; |
| struct cfg80211_registered_device *rdev; |
| struct wireless_dev *wdev; |
| |
| if (state != NETLINK_URELEASE) |
| return NOTIFY_DONE; |
| |
| rcu_read_lock(); |
| |
| list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) |
| list_for_each_entry_rcu(wdev, &rdev->netdev_list, list) |
| cfg80211_mlme_unregister_socket(wdev, notify->pid); |
| |
| rcu_read_unlock(); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block nl80211_netlink_notifier = { |
| .notifier_call = nl80211_netlink_notify, |
| }; |
| |
| /* 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; |
| |
| #ifdef CONFIG_NL80211_TESTMODE |
| err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp); |
| if (err) |
| goto err_out; |
| #endif |
| |
| err = netlink_register_notifier(&nl80211_netlink_notifier); |
| if (err) |
| goto err_out; |
| |
| return 0; |
| err_out: |
| genl_unregister_family(&nl80211_fam); |
| return err; |
| } |
| |
| void nl80211_exit(void) |
| { |
| netlink_unregister_notifier(&nl80211_netlink_notifier); |
| genl_unregister_family(&nl80211_fam); |
| } |