| /* |
| * This is the new netlink-based wireless configuration interface. |
| * |
| * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
| */ |
| |
| #include <linux/if.h> |
| #include <linux/module.h> |
| #include <linux/err.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/genetlink.h> |
| #include <net/cfg80211.h> |
| #include "core.h" |
| #include "nl80211.h" |
| #include "reg.h" |
| |
| /* 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, |
| }; |
| |
| /* internal helper: get drv and dev */ |
| static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, |
| struct cfg80211_registered_device **drv, |
| struct net_device **dev) |
| { |
| int ifindex; |
| |
| if (!attrs[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
| *dev = dev_get_by_index(&init_net, ifindex); |
| if (!*dev) |
| return -ENODEV; |
| |
| *drv = cfg80211_get_dev_from_ifindex(ifindex); |
| if (IS_ERR(*drv)) { |
| dev_put(*dev); |
| return PTR_ERR(*drv); |
| } |
| |
| return 0; |
| } |
| |
| /* policy for the attributes */ |
| static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { |
| [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_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_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_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_MESH_PARAMS] = { .type = NLA_NESTED }, |
| |
| [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 }, |
| }; |
| |
| /* 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 */ |
| |
| 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_modes; |
| struct nlattr *nl_cmds; |
| enum ieee80211_band band; |
| struct ieee80211_channel *chan; |
| struct ieee80211_rate *rate; |
| int i; |
| u16 ifmodes = dev->wiphy.interface_modes; |
| |
| 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_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_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); |
| |
| NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, |
| sizeof(u32) * dev->wiphy.n_cipher_suites, |
| dev->wiphy.cipher_suites); |
| |
| nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); |
| 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); |
| |
| 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(set_mesh_params, SET_MESH_PARAMS); |
| CMD(change_bss, SET_BSS); |
| CMD(auth, AUTHENTICATE); |
| CMD(assoc, ASSOCIATE); |
| CMD(deauth, DEAUTHENTICATE); |
| CMD(disassoc, DISASSOCIATE); |
| CMD(join_ibss, JOIN_IBSS); |
| |
| #undef CMD |
| nla_nest_end(msg, nl_cmds); |
| |
| 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_drv_list, list) { |
| 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; |
| |
| dev = cfg80211_get_dev_from_info(info); |
| if (IS_ERR(dev)) |
| return PTR_ERR(dev); |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| goto out_err; |
| |
| if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) |
| goto out_free; |
| |
| cfg80211_put_dev(dev); |
| |
| return genlmsg_unicast(msg, info->snd_pid); |
| |
| out_free: |
| nlmsg_free(msg); |
| out_err: |
| cfg80211_put_dev(dev); |
| return -ENOBUFS; |
| } |
| |
| 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 int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *rdev; |
| int result = 0, rem_txq_params = 0; |
| struct nlattr *nl_txq_params; |
| u32 changed; |
| u8 retry_short = 0, retry_long = 0; |
| u32 frag_threshold = 0, rts_threshold = 0; |
| |
| rtnl_lock(); |
| |
| mutex_lock(&cfg80211_mutex); |
| |
| rdev = __cfg80211_drv_from_info(info); |
| if (IS_ERR(rdev)) { |
| mutex_unlock(&cfg80211_mutex); |
| result = PTR_ERR(rdev); |
| goto unlock; |
| } |
| |
| mutex_lock(&rdev->mtx); |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_NAME]) |
| result = cfg80211_dev_rename( |
| rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); |
| |
| mutex_unlock(&cfg80211_mutex); |
| |
| if (result) |
| goto bad_res; |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { |
| struct ieee80211_txq_params txq_params; |
| struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; |
| |
| if (!rdev->ops->set_txq_params) { |
| result = -EOPNOTSUPP; |
| goto bad_res; |
| } |
| |
| nla_for_each_nested(nl_txq_params, |
| info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], |
| rem_txq_params) { |
| nla_parse(tb, NL80211_TXQ_ATTR_MAX, |
| nla_data(nl_txq_params), |
| nla_len(nl_txq_params), |
| txq_params_policy); |
| result = parse_txq_params(tb, &txq_params); |
| if (result) |
| goto bad_res; |
| |
| result = rdev->ops->set_txq_params(&rdev->wiphy, |
| &txq_params); |
| if (result) |
| goto bad_res; |
| } |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
| enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; |
| struct ieee80211_channel *chan; |
| struct ieee80211_sta_ht_cap *ht_cap; |
| u32 freq; |
| |
| if (!rdev->ops->set_channel) { |
| result = -EOPNOTSUPP; |
| goto bad_res; |
| } |
| |
| result = -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { |
| channel_type = nla_get_u32(info->attrs[ |
| NL80211_ATTR_WIPHY_CHANNEL_TYPE]); |
| if (channel_type != NL80211_CHAN_NO_HT && |
| channel_type != NL80211_CHAN_HT20 && |
| channel_type != NL80211_CHAN_HT40PLUS && |
| channel_type != NL80211_CHAN_HT40MINUS) |
| goto bad_res; |
| } |
| |
| freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); |
| chan = ieee80211_get_channel(&rdev->wiphy, freq); |
| |
| /* Primary channel not allowed */ |
| if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) |
| goto bad_res; |
| |
| if (channel_type == NL80211_CHAN_HT40MINUS && |
| (chan->flags & IEEE80211_CHAN_NO_HT40MINUS)) |
| goto bad_res; |
| else if (channel_type == NL80211_CHAN_HT40PLUS && |
| (chan->flags & IEEE80211_CHAN_NO_HT40PLUS)) |
| goto bad_res; |
| |
| /* |
| * At this point we know if that if HT40 was requested |
| * we are allowed to use it and the extension channel |
| * exists. |
| */ |
| |
| ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap; |
| |
| /* no HT capabilities or intolerant */ |
| if (channel_type != NL80211_CHAN_NO_HT) { |
| if (!ht_cap->ht_supported) |
| goto bad_res; |
| if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) || |
| (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)) |
| goto bad_res; |
| } |
| |
| result = rdev->ops->set_channel(&rdev->wiphy, chan, |
| channel_type); |
| if (result) |
| goto bad_res; |
| } |
| |
| changed = 0; |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { |
| retry_short = nla_get_u8( |
| info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); |
| if (retry_short == 0) { |
| result = -EINVAL; |
| goto bad_res; |
| } |
| changed |= WIPHY_PARAM_RETRY_SHORT; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { |
| retry_long = nla_get_u8( |
| info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); |
| if (retry_long == 0) { |
| result = -EINVAL; |
| goto bad_res; |
| } |
| changed |= WIPHY_PARAM_RETRY_LONG; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { |
| frag_threshold = nla_get_u32( |
| info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); |
| if (frag_threshold < 256) { |
| result = -EINVAL; |
| goto bad_res; |
| } |
| if (frag_threshold != (u32) -1) { |
| /* |
| * Fragments (apart from the last one) are required to |
| * have even length. Make the fragmentation code |
| * simpler by stripping LSB should someone try to use |
| * odd threshold value. |
| */ |
| frag_threshold &= ~0x1; |
| } |
| changed |= WIPHY_PARAM_FRAG_THRESHOLD; |
| } |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { |
| rts_threshold = nla_get_u32( |
| info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); |
| changed |= WIPHY_PARAM_RTS_THRESHOLD; |
| } |
| |
| if (changed) { |
| u8 old_retry_short, old_retry_long; |
| u32 old_frag_threshold, old_rts_threshold; |
| |
| if (!rdev->ops->set_wiphy_params) { |
| result = -EOPNOTSUPP; |
| goto bad_res; |
| } |
| |
| old_retry_short = rdev->wiphy.retry_short; |
| old_retry_long = rdev->wiphy.retry_long; |
| old_frag_threshold = rdev->wiphy.frag_threshold; |
| old_rts_threshold = rdev->wiphy.rts_threshold; |
| |
| if (changed & WIPHY_PARAM_RETRY_SHORT) |
| rdev->wiphy.retry_short = retry_short; |
| if (changed & WIPHY_PARAM_RETRY_LONG) |
| rdev->wiphy.retry_long = retry_long; |
| if (changed & WIPHY_PARAM_FRAG_THRESHOLD) |
| rdev->wiphy.frag_threshold = frag_threshold; |
| if (changed & WIPHY_PARAM_RTS_THRESHOLD) |
| rdev->wiphy.rts_threshold = rts_threshold; |
| |
| result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); |
| if (result) { |
| rdev->wiphy.retry_short = old_retry_short; |
| rdev->wiphy.retry_long = old_retry_long; |
| rdev->wiphy.frag_threshold = old_frag_threshold; |
| rdev->wiphy.rts_threshold = old_rts_threshold; |
| } |
| } |
| |
| bad_res: |
| mutex_unlock(&rdev->mtx); |
| unlock: |
| rtnl_unlock(); |
| return result; |
| } |
| |
| |
| static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| struct cfg80211_registered_device *rdev, |
| struct net_device *dev) |
| { |
| void *hdr; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) |
| { |
| int wp_idx = 0; |
| int if_idx = 0; |
| int wp_start = cb->args[0]; |
| int if_start = cb->args[1]; |
| struct cfg80211_registered_device *dev; |
| struct wireless_dev *wdev; |
| |
| mutex_lock(&cfg80211_mutex); |
| list_for_each_entry(dev, &cfg80211_drv_list, list) { |
| if (wp_idx < wp_start) { |
| wp_idx++; |
| continue; |
| } |
| if_idx = 0; |
| |
| mutex_lock(&dev->devlist_mtx); |
| list_for_each_entry(wdev, &dev->netdev_list, list) { |
| if (if_idx < if_start) { |
| if_idx++; |
| continue; |
| } |
| if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| dev, wdev->netdev) < 0) { |
| mutex_unlock(&dev->devlist_mtx); |
| goto out; |
| } |
| if_idx++; |
| } |
| mutex_unlock(&dev->devlist_mtx); |
| |
| wp_idx++; |
| } |
| out: |
| mutex_unlock(&cfg80211_mutex); |
| |
| cb->args[0] = wp_idx; |
| cb->args[1] = if_idx; |
| |
| return skb->len; |
| } |
| |
| static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct sk_buff *msg; |
| struct cfg80211_registered_device *dev; |
| struct net_device *netdev; |
| int err; |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev); |
| if (err) |
| return err; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| goto out_err; |
| |
| if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, |
| dev, netdev) < 0) |
| goto out_free; |
| |
| dev_put(netdev); |
| cfg80211_put_dev(dev); |
| |
| return genlmsg_unicast(msg, info->snd_pid); |
| |
| out_free: |
| nlmsg_free(msg); |
| out_err: |
| dev_put(netdev); |
| cfg80211_put_dev(dev); |
| return -ENOBUFS; |
| } |
| |
| static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { |
| [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, |
| [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, |
| [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, |
| [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, |
| [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, |
| }; |
| |
| static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) |
| { |
| struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; |
| int flag; |
| |
| *mntrflags = 0; |
| |
| if (!nla) |
| return -EINVAL; |
| |
| if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, |
| nla, mntr_flags_policy)) |
| return -EINVAL; |
| |
| for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) |
| if (flags[flag]) |
| *mntrflags |= (1<<flag); |
| |
| return 0; |
| } |
| |
| static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct vif_params params; |
| int err, ifindex; |
| enum nl80211_iftype otype, ntype; |
| struct net_device *dev; |
| u32 _flags, *flags = NULL; |
| bool change = false; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| ifindex = dev->ifindex; |
| otype = ntype = dev->ieee80211_ptr->iftype; |
| dev_put(dev); |
| |
| if (info->attrs[NL80211_ATTR_IFTYPE]) { |
| ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
| if (otype != ntype) |
| change = true; |
| if (ntype > NL80211_IFTYPE_MAX) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| } |
| |
| if (!drv->ops->change_virtual_intf || |
| !(drv->wiphy.interface_modes & (1 << ntype))) { |
| err = -EOPNOTSUPP; |
| goto unlock; |
| } |
| |
| if (info->attrs[NL80211_ATTR_MESH_ID]) { |
| if (ntype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
| params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
| change = true; |
| } |
| |
| if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
| if (ntype != NL80211_IFTYPE_MONITOR) { |
| err = -EINVAL; |
| goto unlock; |
| } |
| err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], |
| &_flags); |
| if (err) |
| goto unlock; |
| |
| flags = &_flags; |
| change = true; |
| } |
| |
| if (change) |
| err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, |
| ntype, flags, ¶ms); |
| else |
| err = 0; |
| |
| dev = __dev_get_by_index(&init_net, ifindex); |
| WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype)); |
| |
| if (dev && !err && (ntype != otype)) { |
| if (otype == NL80211_IFTYPE_ADHOC) |
| cfg80211_clear_ibss(dev, false); |
| } |
| |
| unlock: |
| cfg80211_put_dev(drv); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct vif_params params; |
| int err; |
| enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; |
| u32 flags; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| if (!info->attrs[NL80211_ATTR_IFNAME]) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_IFTYPE]) { |
| type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); |
| if (type > NL80211_IFTYPE_MAX) |
| return -EINVAL; |
| } |
| |
| rtnl_lock(); |
| |
| drv = cfg80211_get_dev_from_info(info); |
| if (IS_ERR(drv)) { |
| err = PTR_ERR(drv); |
| goto unlock_rtnl; |
| } |
| |
| if (!drv->ops->add_virtual_intf || |
| !(drv->wiphy.interface_modes & (1 << type))) { |
| err = -EOPNOTSUPP; |
| goto unlock; |
| } |
| |
| if (type == NL80211_IFTYPE_MESH_POINT && |
| info->attrs[NL80211_ATTR_MESH_ID]) { |
| params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
| params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); |
| } |
| |
| err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
| info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, |
| &flags); |
| err = drv->ops->add_virtual_intf(&drv->wiphy, |
| nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
| type, err ? NULL : &flags, ¶ms); |
| |
| unlock: |
| cfg80211_put_dev(drv); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int ifindex, err; |
| struct net_device *dev; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| ifindex = dev->ifindex; |
| dev_put(dev); |
| |
| if (!drv->ops->del_virtual_intf) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); |
| |
| out: |
| cfg80211_put_dev(drv); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| struct get_key_cookie { |
| struct sk_buff *msg; |
| int error; |
| }; |
| |
| static void get_key_callback(void *c, struct key_params *params) |
| { |
| struct get_key_cookie *cookie = c; |
| |
| if (params->key) |
| NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, |
| params->key_len, params->key); |
| |
| if (params->seq) |
| NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, |
| params->seq_len, params->seq); |
| |
| if (params->cipher) |
| NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, |
| params->cipher); |
| |
| return; |
| nla_put_failure: |
| cookie->error = 1; |
| } |
| |
| static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 key_idx = 0; |
| u8 *mac_addr = NULL; |
| struct get_key_cookie cookie = { |
| .error = 0, |
| }; |
| void *hdr; |
| struct sk_buff *msg; |
| |
| if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| |
| if (key_idx > 5) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->get_key) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_NEW_KEY); |
| |
| if (IS_ERR(hdr)) { |
| err = PTR_ERR(hdr); |
| goto out; |
| } |
| |
| cookie.msg = msg; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); |
| if (mac_addr) |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| |
| err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, |
| &cookie, get_key_callback); |
| |
| if (err) |
| goto out; |
| |
| if (cookie.error) |
| goto nla_put_failure; |
| |
| genlmsg_end(msg, hdr); |
| err = genlmsg_unicast(msg, info->snd_pid); |
| goto out; |
| |
| nla_put_failure: |
| err = -ENOBUFS; |
| nlmsg_free(msg); |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 key_idx; |
| int (*func)(struct wiphy *wiphy, struct net_device *netdev, |
| u8 key_index); |
| |
| if (!info->attrs[NL80211_ATTR_KEY_IDX]) |
| return -EINVAL; |
| |
| key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| |
| if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) { |
| if (key_idx < 4 || key_idx > 5) |
| return -EINVAL; |
| } else if (key_idx > 3) |
| return -EINVAL; |
| |
| /* currently only support setting default key */ |
| if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] && |
| !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (info->attrs[NL80211_ATTR_KEY_DEFAULT]) |
| func = drv->ops->set_default_key; |
| else |
| func = drv->ops->set_default_mgmt_key; |
| |
| if (!func) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = func(&drv->wiphy, dev, key_idx); |
| #ifdef CONFIG_WIRELESS_EXT |
| if (!err) { |
| if (func == drv->ops->set_default_key) |
| dev->ieee80211_ptr->wext.default_key = key_idx; |
| else |
| dev->ieee80211_ptr->wext.default_mgmt_key = key_idx; |
| } |
| #endif |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err, i; |
| struct net_device *dev; |
| struct key_params params; |
| u8 key_idx = 0; |
| u8 *mac_addr = NULL; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_KEY_DATA]) { |
| params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); |
| params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_KEY_SEQ]) { |
| params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); |
| params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| |
| params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (cfg80211_validate_key_settings(¶ms, key_idx, mac_addr)) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| for (i = 0; i < drv->wiphy.n_cipher_suites; i++) |
| if (params.cipher == drv->wiphy.cipher_suites[i]) |
| break; |
| if (i == drv->wiphy.n_cipher_suites) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (!drv->ops->add_key) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 key_idx = 0; |
| u8 *mac_addr = NULL; |
| |
| if (info->attrs[NL80211_ATTR_KEY_IDX]) |
| key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); |
| |
| if (key_idx > 5) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->del_key) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); |
| |
| #ifdef CONFIG_WIRELESS_EXT |
| if (!err) { |
| if (key_idx == dev->ieee80211_ptr->wext.default_key) |
| dev->ieee80211_ptr->wext.default_key = -1; |
| else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key) |
| dev->ieee80211_ptr->wext.default_mgmt_key = -1; |
| } |
| #endif |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
| { |
| int (*call)(struct wiphy *wiphy, struct net_device *dev, |
| struct beacon_parameters *info); |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct beacon_parameters params; |
| int haveinfo = 0; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| switch (info->genlhdr->cmd) { |
| case NL80211_CMD_NEW_BEACON: |
| /* these are required for NEW_BEACON */ |
| if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || |
| !info->attrs[NL80211_ATTR_DTIM_PERIOD] || |
| !info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| call = drv->ops->add_beacon; |
| break; |
| case NL80211_CMD_SET_BEACON: |
| call = drv->ops->set_beacon; |
| break; |
| default: |
| WARN_ON(1); |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!call) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { |
| params.interval = |
| nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
| haveinfo = 1; |
| } |
| |
| if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { |
| params.dtim_period = |
| nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); |
| haveinfo = 1; |
| } |
| |
| if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { |
| params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
| params.head_len = |
| nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); |
| haveinfo = 1; |
| } |
| |
| if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { |
| params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
| params.tail_len = |
| nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); |
| haveinfo = 1; |
| } |
| |
| if (!haveinfo) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| err = call(&drv->wiphy, dev, ¶ms); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->del_beacon) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| err = drv->ops->del_beacon(&drv->wiphy, dev); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
| [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, |
| [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, |
| [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, |
| [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, |
| }; |
| |
| static int parse_station_flags(struct genl_info *info, |
| struct station_parameters *params) |
| { |
| struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; |
| struct nlattr *nla; |
| int flag; |
| |
| /* |
| * Try parsing the new attribute first so userspace |
| * can specify both for older kernels. |
| */ |
| nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; |
| if (nla) { |
| struct nl80211_sta_flag_update *sta_flags; |
| |
| sta_flags = nla_data(nla); |
| params->sta_flags_mask = sta_flags->mask; |
| params->sta_flags_set = sta_flags->set; |
| if ((params->sta_flags_mask | |
| params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) |
| return -EINVAL; |
| return 0; |
| } |
| |
| /* if present, parse the old attribute */ |
| |
| nla = info->attrs[NL80211_ATTR_STA_FLAGS]; |
| if (!nla) |
| return 0; |
| |
| if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, |
| nla, sta_flags_policy)) |
| return -EINVAL; |
| |
| params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1; |
| params->sta_flags_mask &= ~1; |
| |
| for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) |
| if (flags[flag]) |
| params->sta_flags_set |= (1<<flag); |
| |
| return 0; |
| } |
| |
| static u16 nl80211_calculate_bitrate(struct rate_info *rate) |
| { |
| int modulation, streams, bitrate; |
| |
| if (!(rate->flags & RATE_INFO_FLAGS_MCS)) |
| return rate->legacy; |
| |
| /* the formula below does only work for MCS values smaller than 32 */ |
| if (rate->mcs >= 32) |
| return 0; |
| |
| modulation = rate->mcs & 7; |
| streams = (rate->mcs >> 3) + 1; |
| |
| bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ? |
| 13500000 : 6500000; |
| |
| if (modulation < 4) |
| bitrate *= (modulation + 1); |
| else if (modulation == 4) |
| bitrate *= (modulation + 2); |
| else |
| bitrate *= (modulation + 3); |
| |
| bitrate *= streams; |
| |
| if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) |
| bitrate = (bitrate / 9) * 10; |
| |
| /* do NOT round down here */ |
| return (bitrate + 50000) / 100000; |
| } |
| |
| static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
| int flags, struct net_device *dev, |
| u8 *mac_addr, struct station_info *sinfo) |
| { |
| void *hdr; |
| struct nlattr *sinfoattr, *txrate; |
| u16 bitrate; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| |
| sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
| if (!sinfoattr) |
| goto nla_put_failure; |
| if (sinfo->filled & STATION_INFO_INACTIVE_TIME) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, |
| sinfo->inactive_time); |
| if (sinfo->filled & STATION_INFO_RX_BYTES) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, |
| sinfo->rx_bytes); |
| if (sinfo->filled & STATION_INFO_TX_BYTES) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, |
| sinfo->tx_bytes); |
| if (sinfo->filled & STATION_INFO_LLID) |
| NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, |
| sinfo->llid); |
| if (sinfo->filled & STATION_INFO_PLID) |
| NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, |
| sinfo->plid); |
| if (sinfo->filled & STATION_INFO_PLINK_STATE) |
| NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, |
| sinfo->plink_state); |
| if (sinfo->filled & STATION_INFO_SIGNAL) |
| NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL, |
| sinfo->signal); |
| if (sinfo->filled & STATION_INFO_TX_BITRATE) { |
| txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE); |
| if (!txrate) |
| goto nla_put_failure; |
| |
| /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */ |
| bitrate = nl80211_calculate_bitrate(&sinfo->txrate); |
| if (bitrate > 0) |
| NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate); |
| |
| if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS) |
| NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, |
| sinfo->txrate.mcs); |
| if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) |
| NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH); |
| if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI) |
| NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI); |
| |
| nla_nest_end(msg, txrate); |
| } |
| if (sinfo->filled & STATION_INFO_RX_PACKETS) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS, |
| sinfo->rx_packets); |
| if (sinfo->filled & STATION_INFO_TX_PACKETS) |
| NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, |
| sinfo->tx_packets); |
| nla_nest_end(msg, sinfoattr); |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_station(struct sk_buff *skb, |
| struct netlink_callback *cb) |
| { |
| struct station_info sinfo; |
| struct cfg80211_registered_device *dev; |
| struct net_device *netdev; |
| u8 mac_addr[ETH_ALEN]; |
| int ifidx = cb->args[0]; |
| int sta_idx = cb->args[1]; |
| int err; |
| |
| if (!ifidx) { |
| err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, |
| nl80211_fam.attrbuf, nl80211_fam.maxattr, |
| nl80211_policy); |
| if (err) |
| return err; |
| |
| if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
| if (!ifidx) |
| return -EINVAL; |
| } |
| |
| rtnl_lock(); |
| |
| netdev = __dev_get_by_index(&init_net, ifidx); |
| if (!netdev) { |
| err = -ENODEV; |
| goto out_rtnl; |
| } |
| |
| dev = cfg80211_get_dev_from_ifindex(ifidx); |
| if (IS_ERR(dev)) { |
| err = PTR_ERR(dev); |
| goto out_rtnl; |
| } |
| |
| if (!dev->ops->dump_station) { |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| while (1) { |
| err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, |
| mac_addr, &sinfo); |
| if (err == -ENOENT) |
| break; |
| if (err) |
| goto out_err; |
| |
| if (nl80211_send_station(skb, |
| NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| netdev, mac_addr, |
| &sinfo) < 0) |
| goto out; |
| |
| sta_idx++; |
| } |
| |
| |
| out: |
| cb->args[1] = sta_idx; |
| err = skb->len; |
| out_err: |
| cfg80211_put_dev(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct station_info sinfo; |
| struct sk_buff *msg; |
| u8 *mac_addr = NULL; |
| |
| memset(&sinfo, 0, sizeof(sinfo)); |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->get_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo); |
| if (err) |
| goto out; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| goto out; |
| |
| if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, |
| dev, mac_addr, &sinfo) < 0) |
| goto out_free; |
| |
| err = genlmsg_unicast(msg, info->snd_pid); |
| goto out; |
| |
| out_free: |
| nlmsg_free(msg); |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| /* |
| * Get vlan interface making sure it is on the right wiphy. |
| */ |
| static int get_vlan(struct nlattr *vlanattr, |
| struct cfg80211_registered_device *rdev, |
| struct net_device **vlan) |
| { |
| *vlan = NULL; |
| |
| if (vlanattr) { |
| *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); |
| if (!*vlan) |
| return -ENODEV; |
| if (!(*vlan)->ieee80211_ptr) |
| return -EINVAL; |
| if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct station_parameters params; |
| u8 *mac_addr = NULL; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| params.listen_interval = -1; |
| |
| if (info->attrs[NL80211_ATTR_STA_AID]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { |
| params.supported_rates = |
| nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| params.supported_rates_len = |
| nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
| params.listen_interval = |
| nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
| |
| if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
| params.ht_capa = |
| nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); |
| |
| if (parse_station_flags(info, ¶ms)) |
| return -EINVAL; |
| |
| if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
| params.plink_action = |
| nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); |
| if (err) |
| goto out; |
| |
| /* validate settings */ |
| err = 0; |
| |
| switch (dev->ieee80211_ptr->iftype) { |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_AP_VLAN: |
| /* disallow mesh-specific things */ |
| if (params.plink_action) |
| err = -EINVAL; |
| break; |
| case NL80211_IFTYPE_STATION: |
| /* disallow everything but AUTHORIZED flag */ |
| if (params.plink_action) |
| err = -EINVAL; |
| if (params.vlan) |
| err = -EINVAL; |
| if (params.supported_rates) |
| err = -EINVAL; |
| if (params.ht_capa) |
| err = -EINVAL; |
| if (params.listen_interval >= 0) |
| err = -EINVAL; |
| if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) |
| err = -EINVAL; |
| break; |
| case NL80211_IFTYPE_MESH_POINT: |
| /* disallow things mesh doesn't support */ |
| if (params.vlan) |
| err = -EINVAL; |
| if (params.ht_capa) |
| err = -EINVAL; |
| if (params.listen_interval >= 0) |
| err = -EINVAL; |
| if (params.supported_rates) |
| err = -EINVAL; |
| if (params.sta_flags_mask) |
| err = -EINVAL; |
| break; |
| default: |
| err = -EINVAL; |
| } |
| |
| if (err) |
| goto out; |
| |
| if (!drv->ops->change_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); |
| |
| out: |
| if (params.vlan) |
| dev_put(params.vlan); |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct station_parameters params; |
| u8 *mac_addr = NULL; |
| |
| memset(¶ms, 0, sizeof(params)); |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) |
| return -EINVAL; |
| |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| params.supported_rates = |
| nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| params.supported_rates_len = |
| nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); |
| params.listen_interval = |
| nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); |
| |
| if (info->attrs[NL80211_ATTR_STA_AID]) { |
| params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
| if (!params.aid || params.aid > IEEE80211_MAX_AID) |
| return -EINVAL; |
| } |
| |
| if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
| params.ht_capa = |
| nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); |
| |
| if (parse_station_flags(info, ¶ms)) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); |
| if (err) |
| goto out; |
| |
| /* validate settings */ |
| err = 0; |
| |
| switch (dev->ieee80211_ptr->iftype) { |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_AP_VLAN: |
| /* all ok but must have AID */ |
| if (!params.aid) |
| err = -EINVAL; |
| break; |
| case NL80211_IFTYPE_MESH_POINT: |
| /* disallow things mesh doesn't support */ |
| if (params.vlan) |
| err = -EINVAL; |
| if (params.aid) |
| err = -EINVAL; |
| if (params.ht_capa) |
| err = -EINVAL; |
| if (params.listen_interval >= 0) |
| err = -EINVAL; |
| if (params.supported_rates) |
| err = -EINVAL; |
| if (params.sta_flags_mask) |
| err = -EINVAL; |
| break; |
| default: |
| err = -EINVAL; |
| } |
| |
| if (err) |
| goto out; |
| |
| if (!drv->ops->add_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); |
| |
| out: |
| if (params.vlan) |
| dev_put(params.vlan); |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 *mac_addr = NULL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && |
| dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (!drv->ops->del_station) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, |
| int flags, struct net_device *dev, |
| u8 *dst, u8 *next_hop, |
| struct mpath_info *pinfo) |
| { |
| void *hdr; |
| struct nlattr *pinfoattr; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); |
| NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); |
| |
| pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); |
| if (!pinfoattr) |
| goto nla_put_failure; |
| if (pinfo->filled & MPATH_INFO_FRAME_QLEN) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, |
| pinfo->frame_qlen); |
| if (pinfo->filled & MPATH_INFO_DSN) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN, |
| pinfo->dsn); |
| if (pinfo->filled & MPATH_INFO_METRIC) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, |
| pinfo->metric); |
| if (pinfo->filled & MPATH_INFO_EXPTIME) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, |
| pinfo->exptime); |
| if (pinfo->filled & MPATH_INFO_FLAGS) |
| NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, |
| pinfo->flags); |
| if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) |
| NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, |
| pinfo->discovery_timeout); |
| if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) |
| NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, |
| pinfo->discovery_retries); |
| |
| nla_nest_end(msg, pinfoattr); |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_mpath(struct sk_buff *skb, |
| struct netlink_callback *cb) |
| { |
| struct mpath_info pinfo; |
| struct cfg80211_registered_device *dev; |
| struct net_device *netdev; |
| u8 dst[ETH_ALEN]; |
| u8 next_hop[ETH_ALEN]; |
| int ifidx = cb->args[0]; |
| int path_idx = cb->args[1]; |
| int err; |
| |
| if (!ifidx) { |
| err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, |
| nl80211_fam.attrbuf, nl80211_fam.maxattr, |
| nl80211_policy); |
| if (err) |
| return err; |
| |
| if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
| if (!ifidx) |
| return -EINVAL; |
| } |
| |
| rtnl_lock(); |
| |
| netdev = __dev_get_by_index(&init_net, ifidx); |
| if (!netdev) { |
| err = -ENODEV; |
| goto out_rtnl; |
| } |
| |
| dev = cfg80211_get_dev_from_ifindex(ifidx); |
| if (IS_ERR(dev)) { |
| err = PTR_ERR(dev); |
| goto out_rtnl; |
| } |
| |
| if (!dev->ops->dump_mpath) { |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| while (1) { |
| err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, |
| dst, next_hop, &pinfo); |
| if (err == -ENOENT) |
| break; |
| if (err) |
| goto out_err; |
| |
| if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| netdev, dst, next_hop, |
| &pinfo) < 0) |
| goto out; |
| |
| path_idx++; |
| } |
| |
| |
| out: |
| cb->args[1] = path_idx; |
| err = skb->len; |
| out_err: |
| cfg80211_put_dev(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct mpath_info pinfo; |
| struct sk_buff *msg; |
| u8 *dst = NULL; |
| u8 next_hop[ETH_ALEN]; |
| |
| memset(&pinfo, 0, sizeof(pinfo)); |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->get_mpath) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo); |
| if (err) |
| goto out; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| goto out; |
| |
| if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, |
| dev, dst, next_hop, &pinfo) < 0) |
| goto out_free; |
| |
| err = genlmsg_unicast(msg, info->snd_pid); |
| goto out; |
| |
| out_free: |
| nlmsg_free(msg); |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 *dst = NULL; |
| u8 *next_hop = NULL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) |
| return -EINVAL; |
| |
| dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->change_mpath) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 *dst = NULL; |
| u8 *next_hop = NULL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) |
| return -EINVAL; |
| |
| dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->add_mpath) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| u8 *dst = NULL; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| dst = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->del_mpath) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->del_mpath(&drv->wiphy, dev, dst); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| int err; |
| struct net_device *dev; |
| struct bss_parameters params; |
| |
| memset(¶ms, 0, sizeof(params)); |
| /* default to not changing parameters */ |
| params.use_cts_prot = -1; |
| params.use_short_preamble = -1; |
| params.use_short_slot_time = -1; |
| |
| if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) |
| params.use_cts_prot = |
| nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); |
| if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) |
| params.use_short_preamble = |
| nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); |
| if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) |
| params.use_short_slot_time = |
| nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); |
| if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { |
| params.basic_rates = |
| nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
| params.basic_rates_len = |
| nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); |
| } |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->change_bss) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static const struct nla_policy |
| reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { |
| [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, |
| [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, |
| [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, |
| [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, |
| [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, |
| [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, |
| }; |
| |
| static int parse_reg_rule(struct nlattr *tb[], |
| struct ieee80211_reg_rule *reg_rule) |
| { |
| struct ieee80211_freq_range *freq_range = ®_rule->freq_range; |
| struct ieee80211_power_rule *power_rule = ®_rule->power_rule; |
| |
| if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) |
| return -EINVAL; |
| if (!tb[NL80211_ATTR_FREQ_RANGE_START]) |
| return -EINVAL; |
| if (!tb[NL80211_ATTR_FREQ_RANGE_END]) |
| return -EINVAL; |
| if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) |
| return -EINVAL; |
| if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) |
| return -EINVAL; |
| |
| reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); |
| |
| freq_range->start_freq_khz = |
| nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); |
| freq_range->end_freq_khz = |
| nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); |
| freq_range->max_bandwidth_khz = |
| nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); |
| |
| power_rule->max_eirp = |
| nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); |
| |
| if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) |
| power_rule->max_antenna_gain = |
| nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); |
| |
| return 0; |
| } |
| |
| static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) |
| { |
| int r; |
| char *data = NULL; |
| |
| /* |
| * You should only get this when cfg80211 hasn't yet initialized |
| * completely when built-in to the kernel right between the time |
| * window between nl80211_init() and regulatory_init(), if that is |
| * even possible. |
| */ |
| mutex_lock(&cfg80211_mutex); |
| if (unlikely(!cfg80211_regdomain)) { |
| mutex_unlock(&cfg80211_mutex); |
| return -EINPROGRESS; |
| } |
| mutex_unlock(&cfg80211_mutex); |
| |
| if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) |
| return -EINVAL; |
| |
| data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); |
| |
| #ifdef CONFIG_WIRELESS_OLD_REGULATORY |
| /* We ignore world regdom requests with the old regdom setup */ |
| if (is_world_regdom(data)) |
| return -EINVAL; |
| #endif |
| |
| r = regulatory_hint_user(data); |
| |
| return r; |
| } |
| |
| static int nl80211_get_mesh_params(struct sk_buff *skb, |
| struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct mesh_config cur_params; |
| int err; |
| struct net_device *dev; |
| void *hdr; |
| struct nlattr *pinfoattr; |
| struct sk_buff *msg; |
| |
| rtnl_lock(); |
| |
| /* Look up our device */ |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->get_mesh_params) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| /* Get the mesh params */ |
| err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params); |
| if (err) |
| goto out; |
| |
| /* Draw up a netlink message to send back */ |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) { |
| err = -ENOBUFS; |
| goto out; |
| } |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_GET_MESH_PARAMS); |
| if (!hdr) |
| goto nla_put_failure; |
| pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS); |
| if (!pinfoattr) |
| goto nla_put_failure; |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, |
| cur_params.dot11MeshRetryTimeout); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, |
| cur_params.dot11MeshConfirmTimeout); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, |
| cur_params.dot11MeshHoldingTimeout); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, |
| cur_params.dot11MeshMaxPeerLinks); |
| NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES, |
| cur_params.dot11MeshMaxRetries); |
| NLA_PUT_U8(msg, NL80211_MESHCONF_TTL, |
| cur_params.dot11MeshTTL); |
| NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, |
| cur_params.auto_open_plinks); |
| NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, |
| cur_params.dot11MeshHWMPmaxPREQretries); |
| NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, |
| cur_params.path_refresh_time); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, |
| cur_params.min_discovery_timeout); |
| NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, |
| cur_params.dot11MeshHWMPactivePathTimeout); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, |
| cur_params.dot11MeshHWMPpreqMinInterval); |
| NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, |
| cur_params.dot11MeshHWMPnetDiameterTraversalTime); |
| nla_nest_end(msg, pinfoattr); |
| genlmsg_end(msg, hdr); |
| err = genlmsg_unicast(msg, info->snd_pid); |
| goto out; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| err = -EMSGSIZE; |
| out: |
| /* Cleanup */ |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ |
| do {\ |
| if (table[attr_num]) {\ |
| cfg.param = nla_fn(table[attr_num]); \ |
| mask |= (1 << (attr_num - 1)); \ |
| } \ |
| } while (0);\ |
| |
| static struct nla_policy |
| nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = { |
| [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, |
| [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, |
| [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, |
| |
| [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, |
| [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, |
| [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, |
| [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, |
| [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, |
| }; |
| |
| static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) |
| { |
| int err; |
| u32 mask; |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct mesh_config cfg; |
| struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; |
| struct nlattr *parent_attr; |
| |
| parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS]; |
| if (!parent_attr) |
| return -EINVAL; |
| if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, |
| parent_attr, nl80211_meshconf_params_policy)) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| if (!drv->ops->set_mesh_params) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| /* This makes sure that there aren't more than 32 mesh config |
| * parameters (otherwise our bitfield scheme would not work.) */ |
| BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); |
| |
| /* Fill in the params struct */ |
| mask = 0; |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, |
| mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, |
| mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, |
| mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, |
| mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, |
| mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, |
| mask, NL80211_MESHCONF_TTL, nla_get_u8); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, |
| mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, |
| mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, |
| nla_get_u8); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, |
| mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, |
| mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, |
| nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, |
| mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, |
| nla_get_u32); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, |
| mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, |
| nla_get_u16); |
| FILL_IN_MESH_PARAM_IF_SET(tb, cfg, |
| dot11MeshHWMPnetDiameterTraversalTime, |
| mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, |
| nla_get_u16); |
| |
| /* Apply changes */ |
| err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask); |
| |
| out: |
| /* cleanup */ |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| #undef FILL_IN_MESH_PARAM_IF_SET |
| |
| static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct sk_buff *msg; |
| void *hdr = NULL; |
| struct nlattr *nl_reg_rules; |
| unsigned int i; |
| int err = -EINVAL; |
| |
| mutex_lock(&cfg80211_mutex); |
| |
| if (!cfg80211_regdomain) |
| goto out; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) { |
| err = -ENOBUFS; |
| goto out; |
| } |
| |
| hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, |
| NL80211_CMD_GET_REG); |
| if (!hdr) |
| goto nla_put_failure; |
| |
| NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, |
| cfg80211_regdomain->alpha2); |
| |
| nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); |
| if (!nl_reg_rules) |
| goto nla_put_failure; |
| |
| for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) { |
| struct nlattr *nl_reg_rule; |
| const struct ieee80211_reg_rule *reg_rule; |
| const struct ieee80211_freq_range *freq_range; |
| const struct ieee80211_power_rule *power_rule; |
| |
| reg_rule = &cfg80211_regdomain->reg_rules[i]; |
| freq_range = ®_rule->freq_range; |
| power_rule = ®_rule->power_rule; |
| |
| nl_reg_rule = nla_nest_start(msg, i); |
| if (!nl_reg_rule) |
| goto nla_put_failure; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS, |
| reg_rule->flags); |
| NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START, |
| freq_range->start_freq_khz); |
| NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END, |
| freq_range->end_freq_khz); |
| NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, |
| freq_range->max_bandwidth_khz); |
| NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, |
| power_rule->max_antenna_gain); |
| NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, |
| power_rule->max_eirp); |
| |
| nla_nest_end(msg, nl_reg_rule); |
| } |
| |
| nla_nest_end(msg, nl_reg_rules); |
| |
| genlmsg_end(msg, hdr); |
| err = genlmsg_unicast(msg, info->snd_pid); |
| goto out; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| err = -EMSGSIZE; |
| out: |
| mutex_unlock(&cfg80211_mutex); |
| return err; |
| } |
| |
| static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; |
| struct nlattr *nl_reg_rule; |
| char *alpha2 = NULL; |
| int rem_reg_rules = 0, r = 0; |
| u32 num_rules = 0, rule_idx = 0, size_of_regd; |
| struct ieee80211_regdomain *rd = NULL; |
| |
| if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_REG_RULES]) |
| return -EINVAL; |
| |
| alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); |
| |
| nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], |
| rem_reg_rules) { |
| num_rules++; |
| if (num_rules > NL80211_MAX_SUPP_REG_RULES) |
| return -EINVAL; |
| } |
| |
| mutex_lock(&cfg80211_mutex); |
| |
| if (!reg_is_valid_request(alpha2)) { |
| r = -EINVAL; |
| goto bad_reg; |
| } |
| |
| size_of_regd = sizeof(struct ieee80211_regdomain) + |
| (num_rules * sizeof(struct ieee80211_reg_rule)); |
| |
| rd = kzalloc(size_of_regd, GFP_KERNEL); |
| if (!rd) { |
| r = -ENOMEM; |
| goto bad_reg; |
| } |
| |
| rd->n_reg_rules = num_rules; |
| rd->alpha2[0] = alpha2[0]; |
| rd->alpha2[1] = alpha2[1]; |
| |
| nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], |
| rem_reg_rules) { |
| nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, |
| nla_data(nl_reg_rule), nla_len(nl_reg_rule), |
| reg_rule_policy); |
| r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); |
| if (r) |
| goto bad_reg; |
| |
| rule_idx++; |
| |
| if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { |
| r = -EINVAL; |
| goto bad_reg; |
| } |
| } |
| |
| BUG_ON(rule_idx != num_rules); |
| |
| r = set_regdom(rd); |
| |
| mutex_unlock(&cfg80211_mutex); |
| |
| return r; |
| |
| bad_reg: |
| mutex_unlock(&cfg80211_mutex); |
| kfree(rd); |
| return r; |
| } |
| |
| static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_scan_request *request; |
| struct cfg80211_ssid *ssid; |
| struct ieee80211_channel *channel; |
| struct nlattr *attr; |
| struct wiphy *wiphy; |
| int err, tmp, n_ssids = 0, n_channels = 0, i; |
| enum ieee80211_band band; |
| size_t ie_len; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto out_rtnl; |
| |
| wiphy = &drv->wiphy; |
| |
| if (!drv->ops->scan) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| if (drv->scan_req) { |
| err = -EBUSY; |
| goto out; |
| } |
| |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) |
| n_channels++; |
| if (!n_channels) { |
| err = -EINVAL; |
| goto out; |
| } |
| } else { |
| for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| if (wiphy->bands[band]) |
| n_channels += wiphy->bands[band]->n_channels; |
| } |
| |
| if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) |
| nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) |
| n_ssids++; |
| |
| if (n_ssids > wiphy->max_scan_ssids) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) |
| ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| else |
| ie_len = 0; |
| |
| if (ie_len > wiphy->max_scan_ie_len) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| request = kzalloc(sizeof(*request) |
| + sizeof(*ssid) * n_ssids |
| + sizeof(channel) * n_channels |
| + ie_len, GFP_KERNEL); |
| if (!request) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| request->channels = (void *)((char *)request + sizeof(*request)); |
| request->n_channels = n_channels; |
| if (n_ssids) |
| request->ssids = (void *)(request->channels + n_channels); |
| request->n_ssids = n_ssids; |
| if (ie_len) { |
| if (request->ssids) |
| request->ie = (void *)(request->ssids + n_ssids); |
| else |
| request->ie = (void *)(request->channels + n_channels); |
| } |
| |
| if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { |
| /* user specified, bail out if channel not found */ |
| request->n_channels = n_channels; |
| i = 0; |
| nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { |
| request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr)); |
| if (!request->channels[i]) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| i++; |
| } |
| } else { |
| /* all channels */ |
| i = 0; |
| for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| int j; |
| if (!wiphy->bands[band]) |
| continue; |
| for (j = 0; j < wiphy->bands[band]->n_channels; j++) { |
| request->channels[i] = &wiphy->bands[band]->channels[j]; |
| i++; |
| } |
| } |
| } |
| |
| i = 0; |
| if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { |
| nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { |
| if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) { |
| err = -EINVAL; |
| goto out_free; |
| } |
| memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); |
| request->ssids[i].ssid_len = nla_len(attr); |
| i++; |
| } |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| memcpy((void *)request->ie, |
| nla_data(info->attrs[NL80211_ATTR_IE]), |
| request->ie_len); |
| } |
| |
| request->ifidx = dev->ifindex; |
| request->wiphy = &drv->wiphy; |
| |
| drv->scan_req = request; |
| err = drv->ops->scan(&drv->wiphy, dev, request); |
| |
| out_free: |
| if (err) { |
| drv->scan_req = NULL; |
| kfree(request); |
| } |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, |
| struct cfg80211_registered_device *rdev, |
| struct net_device *dev, |
| struct cfg80211_bss *res) |
| { |
| void *hdr; |
| struct nlattr *bss; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, |
| NL80211_CMD_NEW_SCAN_RESULTS); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION, |
| rdev->bss_generation); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); |
| |
| bss = nla_nest_start(msg, NL80211_ATTR_BSS); |
| if (!bss) |
| goto nla_put_failure; |
| if (!is_zero_ether_addr(res->bssid)) |
| NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid); |
| if (res->information_elements && res->len_information_elements) |
| NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS, |
| res->len_information_elements, |
| res->information_elements); |
| if (res->tsf) |
| NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf); |
| if (res->beacon_interval) |
| NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval); |
| NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); |
| NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); |
| |
| switch (rdev->wiphy.signal_type) { |
| case CFG80211_SIGNAL_TYPE_MBM: |
| NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); |
| break; |
| case CFG80211_SIGNAL_TYPE_UNSPEC: |
| NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal); |
| break; |
| default: |
| break; |
| } |
| |
| nla_nest_end(msg, bss); |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| static int nl80211_dump_scan(struct sk_buff *skb, |
| struct netlink_callback *cb) |
| { |
| struct cfg80211_registered_device *dev; |
| struct net_device *netdev; |
| struct cfg80211_internal_bss *scan; |
| int ifidx = cb->args[0]; |
| int start = cb->args[1], idx = 0; |
| int err; |
| |
| if (!ifidx) { |
| err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, |
| nl80211_fam.attrbuf, nl80211_fam.maxattr, |
| nl80211_policy); |
| if (err) |
| return err; |
| |
| if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
| return -EINVAL; |
| |
| ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
| if (!ifidx) |
| return -EINVAL; |
| cb->args[0] = ifidx; |
| } |
| |
| netdev = dev_get_by_index(&init_net, ifidx); |
| if (!netdev) |
| return -ENODEV; |
| |
| dev = cfg80211_get_dev_from_ifindex(ifidx); |
| if (IS_ERR(dev)) { |
| err = PTR_ERR(dev); |
| goto out_put_netdev; |
| } |
| |
| spin_lock_bh(&dev->bss_lock); |
| cfg80211_bss_expire(dev); |
| |
| list_for_each_entry(scan, &dev->bss_list, list) { |
| if (++idx <= start) |
| continue; |
| if (nl80211_send_bss(skb, |
| NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, NLM_F_MULTI, |
| dev, netdev, &scan->pub) < 0) { |
| idx--; |
| goto out; |
| } |
| } |
| |
| out: |
| spin_unlock_bh(&dev->bss_lock); |
| |
| cb->args[1] = idx; |
| err = skb->len; |
| cfg80211_put_dev(dev); |
| out_put_netdev: |
| dev_put(netdev); |
| |
| return err; |
| } |
| |
| static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type) |
| { |
| return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM || |
| auth_type == NL80211_AUTHTYPE_SHARED_KEY || |
| auth_type == NL80211_AUTHTYPE_FT || |
| auth_type == NL80211_AUTHTYPE_NETWORK_EAP; |
| } |
| |
| static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_auth_request req; |
| struct wiphy *wiphy; |
| int err; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->auth) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| wiphy = &drv->wiphy; |
| memset(&req, 0, sizeof(req)); |
| |
| req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
| req.chan = ieee80211_get_channel( |
| wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!req.chan) { |
| err = -EINVAL; |
| goto out; |
| } |
| } |
| |
| if (info->attrs[NL80211_ATTR_SSID]) { |
| req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); |
| if (!nl80211_valid_auth_type(req.auth_type)) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| err = drv->ops->auth(&drv->wiphy, dev, &req); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_assoc_request req; |
| struct wiphy *wiphy; |
| int err; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC] || |
| !info->attrs[NL80211_ATTR_SSID]) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->assoc) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| wiphy = &drv->wiphy; |
| memset(&req, 0, sizeof(req)); |
| |
| req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { |
| req.chan = ieee80211_get_channel( |
| wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!req.chan) { |
| err = -EINVAL; |
| goto out; |
| } |
| } |
| |
| req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| if (info->attrs[NL80211_ATTR_USE_MFP]) { |
| enum nl80211_mfp use_mfp = |
| nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); |
| if (use_mfp == NL80211_MFP_REQUIRED) |
| req.use_mfp = true; |
| else if (use_mfp != NL80211_MFP_NO) { |
| err = -EINVAL; |
| goto out; |
| } |
| } |
| |
| req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; |
| |
| err = drv->ops->assoc(&drv->wiphy, dev, &req); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_deauth_request req; |
| struct wiphy *wiphy; |
| int err; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->deauth) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| wiphy = &drv->wiphy; |
| memset(&req, 0, sizeof(req)); |
| |
| req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
| if (req.reason_code == 0) { |
| /* Reason Code 0 is reserved */ |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| err = drv->ops->deauth(&drv->wiphy, dev, &req); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_disassoc_request req; |
| struct wiphy *wiphy; |
| int err; |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_MAC]) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_REASON_CODE]) |
| return -EINVAL; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->disassoc) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| wiphy = &drv->wiphy; |
| memset(&req, 0, sizeof(req)); |
| |
| req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| |
| req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); |
| if (req.reason_code == 0) { |
| /* Reason Code 0 is reserved */ |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| err = drv->ops->disassoc(&drv->wiphy, dev, &req); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| struct cfg80211_ibss_params ibss; |
| struct wiphy *wiphy; |
| int err; |
| |
| memset(&ibss, 0, sizeof(ibss)); |
| |
| if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) |
| return -EINVAL; |
| |
| if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || |
| !info->attrs[NL80211_ATTR_SSID] || |
| !nla_len(info->attrs[NL80211_ATTR_SSID])) |
| return -EINVAL; |
| |
| ibss.beacon_interval = 100; |
| |
| if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { |
| ibss.beacon_interval = |
| nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); |
| if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) |
| return -EINVAL; |
| } |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->join_ibss) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| wiphy = &drv->wiphy; |
| |
| if (info->attrs[NL80211_ATTR_MAC]) |
| ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); |
| ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); |
| ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); |
| |
| if (info->attrs[NL80211_ATTR_IE]) { |
| ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); |
| ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); |
| } |
| |
| ibss.channel = ieee80211_get_channel(wiphy, |
| nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); |
| if (!ibss.channel || |
| ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || |
| ibss.channel->flags & IEEE80211_CHAN_DISABLED) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; |
| |
| err = cfg80211_join_ibss(drv, dev, &ibss); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct cfg80211_registered_device *drv; |
| struct net_device *dev; |
| int err; |
| |
| rtnl_lock(); |
| |
| err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
| if (err) |
| goto unlock_rtnl; |
| |
| if (!drv->ops->leave_ibss) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (!netif_running(dev)) { |
| err = -ENETDOWN; |
| goto out; |
| } |
| |
| err = cfg80211_leave_ibss(drv, dev, false); |
| |
| out: |
| cfg80211_put_dev(drv); |
| dev_put(dev); |
| unlock_rtnl: |
| rtnl_unlock(); |
| return err; |
| } |
| |
| static struct genl_ops nl80211_ops[] = { |
| { |
| .cmd = NL80211_CMD_GET_WIPHY, |
| .doit = nl80211_get_wiphy, |
| .dumpit = nl80211_dump_wiphy, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| }, |
| { |
| .cmd = NL80211_CMD_SET_WIPHY, |
| .doit = nl80211_set_wiphy, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_INTERFACE, |
| .doit = nl80211_get_interface, |
| .dumpit = nl80211_dump_interface, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| }, |
| { |
| .cmd = NL80211_CMD_SET_INTERFACE, |
| .doit = nl80211_set_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_INTERFACE, |
| .doit = nl80211_new_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_INTERFACE, |
| .doit = nl80211_del_interface, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_KEY, |
| .doit = nl80211_get_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_KEY, |
| .doit = nl80211_set_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_KEY, |
| .doit = nl80211_new_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_KEY, |
| .doit = nl80211_del_key, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_addset_beacon, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_addset_beacon, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_BEACON, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| .doit = nl80211_del_beacon, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_STATION, |
| .doit = nl80211_get_station, |
| .dumpit = nl80211_dump_station, |
| .policy = nl80211_policy, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_STATION, |
| .doit = nl80211_set_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_STATION, |
| .doit = nl80211_new_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_STATION, |
| .doit = nl80211_del_station, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_MPATH, |
| .doit = nl80211_get_mpath, |
| .dumpit = nl80211_dump_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_MPATH, |
| .doit = nl80211_set_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_NEW_MPATH, |
| .doit = nl80211_new_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DEL_MPATH, |
| .doit = nl80211_del_mpath, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_SET_BSS, |
| .doit = nl80211_set_bss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_REG, |
| .doit = nl80211_get_reg, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| }, |
| { |
| .cmd = NL80211_CMD_SET_REG, |
| .doit = nl80211_set_reg, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_REQ_SET_REG, |
| .doit = nl80211_req_set_reg, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_MESH_PARAMS, |
| .doit = nl80211_get_mesh_params, |
| .policy = nl80211_policy, |
| /* can be retrieved by unprivileged users */ |
| }, |
| { |
| .cmd = NL80211_CMD_SET_MESH_PARAMS, |
| .doit = nl80211_set_mesh_params, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_TRIGGER_SCAN, |
| .doit = nl80211_trigger_scan, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_GET_SCAN, |
| .policy = nl80211_policy, |
| .dumpit = nl80211_dump_scan, |
| }, |
| { |
| .cmd = NL80211_CMD_AUTHENTICATE, |
| .doit = nl80211_authenticate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_ASSOCIATE, |
| .doit = nl80211_associate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DEAUTHENTICATE, |
| .doit = nl80211_deauthenticate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_DISASSOCIATE, |
| .doit = nl80211_disassociate, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_JOIN_IBSS, |
| .doit = nl80211_join_ibss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| { |
| .cmd = NL80211_CMD_LEAVE_IBSS, |
| .doit = nl80211_leave_ibss, |
| .policy = nl80211_policy, |
| .flags = GENL_ADMIN_PERM, |
| }, |
| }; |
| static struct genl_multicast_group nl80211_mlme_mcgrp = { |
| .name = "mlme", |
| }; |
| |
| /* multicast groups */ |
| static struct genl_multicast_group nl80211_config_mcgrp = { |
| .name = "config", |
| }; |
| static struct genl_multicast_group nl80211_scan_mcgrp = { |
| .name = "scan", |
| }; |
| static struct genl_multicast_group nl80211_regulatory_mcgrp = { |
| .name = "regulatory", |
| }; |
| |
| /* notification functions */ |
| |
| void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) |
| { |
| struct sk_buff *msg; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); |
| } |
| |
| static int nl80211_add_scan_req(struct sk_buff *msg, |
| struct cfg80211_registered_device *rdev) |
| { |
| struct cfg80211_scan_request *req = rdev->scan_req; |
| struct nlattr *nest; |
| int i; |
| |
| if (WARN_ON(!req)) |
| return 0; |
| |
| nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); |
| if (!nest) |
| goto nla_put_failure; |
| for (i = 0; i < req->n_ssids; i++) |
| NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid); |
| nla_nest_end(msg, nest); |
| |
| nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); |
| if (!nest) |
| goto nla_put_failure; |
| for (i = 0; i < req->n_channels; i++) |
| NLA_PUT_U32(msg, i, req->channels[i]->center_freq); |
| nla_nest_end(msg, nest); |
| |
| if (req->ie) |
| NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie); |
| |
| return 0; |
| nla_put_failure: |
| return -ENOBUFS; |
| } |
| |
| static int nl80211_send_scan_donemsg(struct sk_buff *msg, |
| struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, |
| u32 pid, u32 seq, int flags, |
| u32 cmd) |
| { |
| void *hdr; |
| |
| hdr = nl80211hdr_put(msg, pid, seq, flags, cmd); |
| if (!hdr) |
| return -1; |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| |
| /* ignore errors and send incomplete event anyway */ |
| nl80211_add_scan_req(msg, rdev); |
| |
| return genlmsg_end(msg, hdr); |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| return -EMSGSIZE; |
| } |
| |
| void nl80211_send_scan_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_donemsg(msg, rdev, netdev, 0, 0, 0, |
| NL80211_CMD_NEW_SCAN_RESULTS) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); |
| } |
| |
| void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev) |
| { |
| struct sk_buff *msg; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, |
| NL80211_CMD_SCAN_ABORTED) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); |
| } |
| |
| /* |
| * This can happen on global regulatory changes or device specific settings |
| * based on custom world regulatory domains. |
| */ |
| void nl80211_send_reg_change_event(struct regulatory_request *request) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| /* Userspace can always count this one always being set */ |
| NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator); |
| |
| if (request->alpha2[0] == '0' && request->alpha2[1] == '0') |
| NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
| NL80211_REGDOM_TYPE_WORLD); |
| else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') |
| NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
| NL80211_REGDOM_TYPE_CUSTOM_WORLD); |
| else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || |
| request->intersect) |
| NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
| NL80211_REGDOM_TYPE_INTERSECTION); |
| else { |
| NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, |
| NL80211_REGDOM_TYPE_COUNTRY); |
| NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2); |
| } |
| |
| if (wiphy_idx_valid(request->wiphy_idx)) |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL); |
| |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, |
| const u8 *buf, size_t len, |
| enum nl80211_commands cmd) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, size_t len) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_AUTHENTICATE); |
| } |
| |
| void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE); |
| } |
| |
| void nl80211_send_deauth(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, size_t len) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_DEAUTHENTICATE); |
| } |
| |
| void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *buf, |
| size_t len) |
| { |
| nl80211_send_mlme_event(rdev, netdev, buf, len, |
| NL80211_CMD_DISASSOCIATE); |
| } |
| |
| static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, int cmd, |
| const u8 *addr) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT); |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *addr) |
| { |
| nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, |
| addr); |
| } |
| |
| void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *addr) |
| { |
| nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr); |
| } |
| |
| void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *bssid, |
| gfp_t gfp) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, |
| struct net_device *netdev, const u8 *addr, |
| enum nl80211_key_type key_type, int key_id, |
| const u8 *tsc) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); |
| NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); |
| if (addr) |
| NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); |
| NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type); |
| NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id); |
| if (tsc) |
| NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC); |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| void nl80211_send_beacon_hint_event(struct wiphy *wiphy, |
| struct ieee80211_channel *channel_before, |
| struct ieee80211_channel *channel_after) |
| { |
| struct sk_buff *msg; |
| void *hdr; |
| struct nlattr *nl_freq; |
| |
| msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
| if (!msg) |
| return; |
| |
| hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); |
| if (!hdr) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| /* |
| * Since we are applying the beacon hint to a wiphy we know its |
| * wiphy_idx is valid |
| */ |
| NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)); |
| |
| /* Before */ |
| nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); |
| if (!nl_freq) |
| goto nla_put_failure; |
| if (nl80211_msg_put_channel(msg, channel_before)) |
| goto nla_put_failure; |
| nla_nest_end(msg, nl_freq); |
| |
| /* After */ |
| nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); |
| if (!nl_freq) |
| goto nla_put_failure; |
| if (nl80211_msg_put_channel(msg, channel_after)) |
| goto nla_put_failure; |
| nla_nest_end(msg, nl_freq); |
| |
| if (genlmsg_end(msg, hdr) < 0) { |
| nlmsg_free(msg); |
| return; |
| } |
| |
| genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC); |
| |
| return; |
| |
| nla_put_failure: |
| genlmsg_cancel(msg, hdr); |
| nlmsg_free(msg); |
| } |
| |
| /* initialisation/exit functions */ |
| |
| int nl80211_init(void) |
| { |
| int err; |
| |
| err = genl_register_family_with_ops(&nl80211_fam, |
| nl80211_ops, ARRAY_SIZE(nl80211_ops)); |
| if (err) |
| return err; |
| |
| err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); |
| if (err) |
| goto err_out; |
| |
| err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp); |
| if (err) |
| goto err_out; |
| |
| err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); |
| if (err) |
| goto err_out; |
| |
| err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp); |
| if (err) |
| goto err_out; |
| |
| return 0; |
| err_out: |
| genl_unregister_family(&nl80211_fam); |
| return err; |
| } |
| |
| void nl80211_exit(void) |
| { |
| genl_unregister_family(&nl80211_fam); |
| } |