diff options
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 365 |
1 files changed, 330 insertions, 35 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f07602d7bf68..28d2aa109bee 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -176,6 +176,8 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, + [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, + [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, }; /* policy for the key attributes */ @@ -204,6 +206,18 @@ nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, + [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, + [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, + [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, + [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, +}; + +/* policy for GTK rekey offload attributes */ +static const struct nla_policy +nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { + [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, + [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, + [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, }; /* ifidx get helper */ @@ -683,8 +697,12 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, dev->wiphy.coverage_class); NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, dev->wiphy.max_scan_ssids); + NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, + dev->wiphy.max_sched_scan_ssids); NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, dev->wiphy.max_scan_ie_len); + NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, + dev->wiphy.max_sched_scan_ie_len); if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN); @@ -920,6 +938,16 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); + if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED); + if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE); + if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST); + if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE); + if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE); if (dev->wiphy.wowlan.n_patterns) { struct nl80211_wowlan_pattern_support pat = { .max_patterns = dev->wiphy.wowlan.n_patterns, @@ -3297,7 +3325,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) struct nlattr *attr; struct wiphy *wiphy; int err, tmp, n_ssids = 0, n_channels, i; - enum ieee80211_band band; size_t ie_len; if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) @@ -3317,6 +3344,7 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) if (!n_channels) return -EINVAL; } else { + enum ieee80211_band band; n_channels = 0; for (band = 0; band < IEEE80211_NUM_BANDS; band++) @@ -3377,6 +3405,8 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) i++; } } else { + enum ieee80211_band band; + /* all channels */ for (band = 0; band < IEEE80211_NUM_BANDS; band++) { int j; @@ -3423,6 +3453,30 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) request->ie_len); } + for (i = 0; i < IEEE80211_NUM_BANDS; i++) + if (wiphy->bands[i]) + request->rates[i] = + (1 << wiphy->bands[i]->n_bitrates) - 1; + + if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { + nla_for_each_nested(attr, + info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], + tmp) { + enum ieee80211_band band = nla_type(attr); + + if (band < 0 || band > IEEE80211_NUM_BANDS) { + err = -EINVAL; + goto out_free; + } + err = ieee80211_get_ratemask(wiphy->bands[band], + nla_data(attr), + nla_len(attr), + &request->rates[band]); + if (err) + goto out_free; + } + } + request->dev = dev; request->wiphy = &rdev->wiphy; @@ -3461,9 +3515,6 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) return -EINVAL; - if (rdev->sched_scan_req) - return -EINPROGRESS; - if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) return -EINVAL; @@ -3491,7 +3542,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, tmp) n_ssids++; - if (n_ssids > wiphy->max_scan_ssids) + if (n_ssids > wiphy->max_sched_scan_ssids) return -EINVAL; if (info->attrs[NL80211_ATTR_IE]) @@ -3499,15 +3550,24 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, else ie_len = 0; - if (ie_len > wiphy->max_scan_ie_len) + if (ie_len > wiphy->max_sched_scan_ie_len) return -EINVAL; + mutex_lock(&rdev->sched_scan_mtx); + + if (rdev->sched_scan_req) { + err = -EINPROGRESS; + goto out; + } + request = kzalloc(sizeof(*request) + sizeof(*request->ssids) * n_ssids + sizeof(*request->channels) * n_channels + ie_len, GFP_KERNEL); - if (!request) - return -ENOMEM; + if (!request) { + err = -ENOMEM; + goto out; + } if (n_ssids) request->ssids = (void *)&request->channels[n_channels]; @@ -3605,6 +3665,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, out_free: kfree(request); out: + mutex_unlock(&rdev->sched_scan_mtx); return err; } @@ -3612,15 +3673,21 @@ static int nl80211_stop_sched_scan(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; + int err; if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || !rdev->ops->sched_scan_stop) return -EOPNOTSUPP; - return __cfg80211_stop_sched_scan(rdev, false); + mutex_lock(&rdev->sched_scan_mtx); + err = __cfg80211_stop_sched_scan(rdev, false); + mutex_unlock(&rdev->sched_scan_mtx); + + return err; } -static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, +static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, + u32 seq, int flags, struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_internal_bss *intbss) @@ -3632,11 +3699,13 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, ASSERT_WDEV_LOCK(wdev); - hdr = nl80211hdr_put(msg, pid, seq, flags, + hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags, NL80211_CMD_NEW_SCAN_RESULTS); if (!hdr) return -1; + genl_dump_check_consistent(cb, hdr, &nl80211_fam); + NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation); NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex); @@ -3725,11 +3794,12 @@ static int nl80211_dump_scan(struct sk_buff *skb, spin_lock_bh(&rdev->bss_lock); cfg80211_bss_expire(rdev); + cb->seq = rdev->bss_generation; + list_for_each_entry(scan, &rdev->bss_list, list) { if (++idx <= start) continue; - if (nl80211_send_bss(skb, - NETLINK_CB(cb->skb).pid, + if (nl80211_send_bss(skb, cb, cb->nlh->nlmsg_seq, NLM_F_MULTI, rdev, wdev, scan) < 0) { idx--; @@ -3753,10 +3823,6 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, void *hdr; struct nlattr *infoattr; - /* Survey without a channel doesn't make sense */ - if (!survey->channel) - return -EINVAL; - hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_SURVEY_RESULTS); if (!hdr) @@ -3819,6 +3885,8 @@ static int nl80211_dump_survey(struct sk_buff *skb, } while (1) { + struct ieee80211_channel *chan; + res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx, &survey); if (res == -ENOENT) @@ -3826,6 +3894,19 @@ static int nl80211_dump_survey(struct sk_buff *skb, if (res) goto out_err; + /* Survey without a channel doesn't make sense */ + if (!survey.channel) { + res = -EINVAL; + goto out; + } + + chan = ieee80211_get_channel(&dev->wiphy, + survey.channel->center_freq); + if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { + survey_idx++; + continue; + } + if (nl80211_send_survey(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, NLM_F_MULTI, @@ -4282,25 +4363,12 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); struct ieee80211_supported_band *sband = wiphy->bands[ibss.channel->band]; - int i, j; + int err; - if (n_rates == 0) - return -EINVAL; - - for (i = 0; i < n_rates; i++) { - int rate = (rates[i] & 0x7f) * 5; - bool found = false; - - for (j = 0; j < sband->n_bitrates; j++) { - if (sband->bitrates[j].bitrate == rate) { - found = true; - ibss.basic_rates |= BIT(j); - break; - } - } - if (!found) - return -EINVAL; - } + err = ieee80211_get_ratemask(sband, rates, n_rates, + &ibss.basic_rates); + if (err) + return err; } if (info->attrs[NL80211_ATTR_MCAST_RATE] && @@ -4360,6 +4428,93 @@ static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) return err; } +static int nl80211_testmode_dump(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct cfg80211_registered_device *dev; + int err; + long phy_idx; + void *data = NULL; + int data_len = 0; + + if (cb->args[0]) { + /* + * 0 is a valid index, but not valid for args[0], + * so we need to offset by 1. + */ + phy_idx = cb->args[0] - 1; + } else { + 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_WIPHY]) + return -EINVAL; + phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]); + if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) + cb->args[1] = + (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; + } + + if (cb->args[1]) { + data = nla_data((void *)cb->args[1]); + data_len = nla_len((void *)cb->args[1]); + } + + mutex_lock(&cfg80211_mutex); + dev = cfg80211_rdev_by_wiphy_idx(phy_idx); + if (!dev) { + mutex_unlock(&cfg80211_mutex); + return -ENOENT; + } + cfg80211_lock_rdev(dev); + mutex_unlock(&cfg80211_mutex); + + if (!dev->ops->testmode_dump) { + err = -EOPNOTSUPP; + goto out_err; + } + + while (1) { + void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, NLM_F_MULTI, + NL80211_CMD_TESTMODE); + struct nlattr *tmdata; + + if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) { + genlmsg_cancel(skb, hdr); + break; + } + + tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); + if (!tmdata) { + genlmsg_cancel(skb, hdr); + break; + } + err = dev->ops->testmode_dump(&dev->wiphy, skb, cb, + data, data_len); + nla_nest_end(skb, tmdata); + + if (err == -ENOBUFS || err == -ENOENT) { + genlmsg_cancel(skb, hdr); + break; + } else if (err) { + genlmsg_cancel(skb, hdr); + goto out_err; + } + + genlmsg_end(skb, hdr); + } + + err = skb->len; + /* see above */ + cb->args[0] = phy_idx + 1; + out_err: + cfg80211_unlock_rdev(dev); + return err; +} + static struct sk_buff * __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev, int approxlen, u32 pid, u32 seq, gfp_t gfp) @@ -5149,6 +5304,14 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); if (rdev->wowlan->magic_pkt) NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); + if (rdev->wowlan->gtk_rekey_failure) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE); + if (rdev->wowlan->eap_identity_req) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST); + if (rdev->wowlan->four_way_handshake) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE); + if (rdev->wowlan->rfkill_release) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE); if (rdev->wowlan->n_patterns) { struct nlattr *nl_pats, *nl_pat; int i, pat_len; @@ -5225,6 +5388,33 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) new_triggers.magic_pkt = true; } + if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) + return -EINVAL; + + if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { + if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) + return -EINVAL; + new_triggers.gtk_rekey_failure = true; + } + + if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { + if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) + return -EINVAL; + new_triggers.eap_identity_req = true; + } + + if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { + if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) + return -EINVAL; + new_triggers.four_way_handshake = true; + } + + if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { + if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) + return -EINVAL; + new_triggers.rfkill_release = true; + } + if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { struct nlattr *pat; int n_patterns = 0; @@ -5306,6 +5496,57 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) return err; } +static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct nlattr *tb[NUM_NL80211_REKEY_DATA]; + struct cfg80211_gtk_rekey_data rekey_data; + int err; + + if (!info->attrs[NL80211_ATTR_REKEY_DATA]) + return -EINVAL; + + err = nla_parse(tb, MAX_NL80211_REKEY_DATA, + nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), + nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), + nl80211_rekey_policy); + if (err) + return err; + + if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) + return -ERANGE; + if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) + return -ERANGE; + if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) + return -ERANGE; + + memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), + NL80211_KEK_LEN); + memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), + NL80211_KCK_LEN); + memcpy(rekey_data.replay_ctr, + nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), + NL80211_REPLAY_CTR_LEN); + + wdev_lock(wdev); + if (!wdev->current_bss) { + err = -ENOTCONN; + goto out; + } + + if (!rdev->ops->set_rekey_data) { + err = -EOPNOTSUPP; + goto out; + } + + err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data); + out: + wdev_unlock(wdev); + return err; +} + #define NL80211_FLAG_NEED_WIPHY 0x01 #define NL80211_FLAG_NEED_NETDEV 0x02 #define NL80211_FLAG_NEED_RTNL 0x04 @@ -5657,6 +5898,7 @@ static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_TESTMODE, .doit = nl80211_testmode_do, + .dumpit = nl80211_testmode_dump, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, .internal_flags = NL80211_FLAG_NEED_WIPHY | @@ -5836,6 +6078,14 @@ static struct genl_ops nl80211_ops[] = { .internal_flags = NL80211_FLAG_NEED_WIPHY | NL80211_FLAG_NEED_RTNL, }, + { + .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, + .doit = nl80211_set_rekey_data, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | + NL80211_FLAG_NEED_RTNL, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { @@ -6780,6 +7030,51 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, nlmsg_free(msg); } +void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *bssid, + const u8 *replay_ctr, gfp_t gfp) +{ + struct sk_buff *msg; + struct nlattr *rekey_attr; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); + 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); + + rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); + if (!rekey_attr) + goto nla_put_failure; + + NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, + NL80211_REPLAY_CTR_LEN, replay_ctr); + + nla_nest_end(msg, rekey_attr); + + if (genlmsg_end(msg, hdr) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, + nl80211_mlme_mcgrp.id, gfp); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + void nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, |