diff options
| -rw-r--r-- | net/mac80211/cfg.c | 17 | ||||
| -rw-r--r-- | net/mac80211/ibss.c | 347 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 35 | ||||
| -rw-r--r-- | net/mac80211/iface.c | 12 | ||||
| -rw-r--r-- | net/mac80211/main.c | 2 | ||||
| -rw-r--r-- | net/mac80211/scan.c | 2 | ||||
| -rw-r--r-- | net/mac80211/sta_info.c | 71 | ||||
| -rw-r--r-- | net/mac80211/sta_info.h | 3 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 6 | ||||
| -rw-r--r-- | net/mac80211/wext.c | 63 |
10 files changed, 228 insertions, 330 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index daf75287e92a..14013dc64474 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1283,6 +1283,21 @@ static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, return ieee80211_sta_disassociate(sdata, req->reason_code); } +static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ibss_params *params) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + return ieee80211_ibss_join(sdata, params); +} + +static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + return ieee80211_ibss_leave(sdata); +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1319,4 +1334,6 @@ struct cfg80211_ops mac80211_config_ops = { .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, .disassoc = ieee80211_disassoc, + .join_ibss = ieee80211_join_ibss, + .leave_ibss = ieee80211_leave_ibss, }; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 3201e1f96365..4f7a54518be4 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -59,74 +59,59 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, sdata->u.ibss.bssid, 0); } -static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, - const u8 *bssid, const int beacon_int, - const int freq, - const size_t supp_rates_len, - const u8 *supp_rates, - const u16 capability, u64 tsf) +static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, + const u8 *bssid, const int beacon_int, + struct ieee80211_channel *chan, + const size_t supp_rates_len, + const u8 *supp_rates, + const u16 capability, u64 tsf) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; - int res = 0, rates, i, j; + int rates, i, j; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; u8 *pos; struct ieee80211_supported_band *sband; - union iwreq_data wrqu; if (local->ops->reset_tsf) { /* Reset own TSF to allow time synchronization work. */ local->ops->reset_tsf(local_to_hw(local)); } - if ((ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) && - memcmp(ifibss->bssid, bssid, ETH_ALEN) == 0) - return res; + skb = ifibss->skb; + rcu_assign_pointer(ifibss->presp, NULL); + synchronize_rcu(); + skb->data = skb->head; + skb->len = 0; + skb_reset_tail_pointer(skb); + skb_reserve(skb, sdata->local->hw.extra_tx_headroom); - skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for probe " - "response\n", sdata->dev->name); - return -ENOMEM; - } - - if (!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) { - /* Remove possible STA entries from other IBSS networks. */ - sta_info_flush_delayed(sdata); - } + if (memcmp(ifibss->bssid, bssid, ETH_ALEN)) + sta_info_flush(sdata->local, sdata); memcpy(ifibss->bssid, bssid, ETH_ALEN); - res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); - if (res) - return res; local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10; - sdata->drop_unencrypted = capability & - WLAN_CAPABILITY_PRIVACY ? 1 : 0; - - res = ieee80211_set_freq(sdata, freq); + sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; - if (res) - return res; + ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + local->oper_channel = chan; + local->oper_channel_type = NL80211_CHAN_NO_HT; + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); + sband = local->hw.wiphy->bands[chan->band]; /* Build IBSS probe response */ - - skb_reserve(skb, local->hw.extra_tx_headroom); - - mgmt = (struct ieee80211_mgmt *) - skb_put(skb, 24 + sizeof(mgmt->u.beacon)); + mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); memset(mgmt->da, 0xff, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); - mgmt->u.beacon.beacon_int = - cpu_to_le16(local->hw.conf.beacon_int); + mgmt->u.beacon.beacon_int = cpu_to_le16(local->hw.conf.beacon_int); mgmt->u.beacon.timestamp = cpu_to_le64(tsf); mgmt->u.beacon.capab_info = cpu_to_le16(capability); @@ -147,7 +132,7 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, pos = skb_put(skb, 2 + 1); *pos++ = WLAN_EID_DS_PARAMS; *pos++ = 1; - *pos++ = ieee80211_frequency_to_channel(freq); + *pos++ = ieee80211_frequency_to_channel(chan->center_freq); } pos = skb_put(skb, 2 + 2); @@ -165,12 +150,15 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, memcpy(pos, &supp_rates[8], rates); } - ifibss->probe_resp = skb; + if (ifibss->ie_len) + memcpy(skb_put(skb, ifibss->ie_len), + ifibss->ie, ifibss->ie_len); + + rcu_assign_pointer(ifibss->presp, skb); ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON | IEEE80211_IFCC_BEACON_ENABLED); - rates = 0; for (i = 0; i < supp_rates_len; i++) { int bitrate = (supp_rates[i] & 0x7f) * 5; @@ -181,27 +169,24 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, ieee80211_sta_def_wmm_params(sdata, supp_rates_len, supp_rates); - ifibss->flags |= IEEE80211_IBSS_PREV_BSSID_SET; ifibss->state = IEEE80211_IBSS_MLME_JOINED; - mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); + mod_timer(&ifibss->timer, + round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); - memset(&wrqu, 0, sizeof(wrqu)); - memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); - wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); - - return res; + cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel, + mgmt, skb->len, 0, GFP_KERNEL); + cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); } -static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_bss *bss) +static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, + struct ieee80211_bss *bss) { - return __ieee80211_sta_join_ibss(sdata, - bss->cbss.bssid, - bss->cbss.beacon_interval, - bss->cbss.channel->center_freq, - bss->supp_rates_len, bss->supp_rates, - bss->cbss.capability, - bss->cbss.tsf); + __ieee80211_sta_join_ibss(sdata, bss->cbss.bssid, + bss->cbss.beacon_interval, + bss->cbss.channel, + bss->supp_rates_len, bss->supp_rates, + bss->cbss.capability, + bss->cbss.tsf); } static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, @@ -277,7 +262,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, goto put_bss; /* we use a fixed BSSID */ - if (sdata->u.ibss.flags & IEEE80211_IBSS_BSSID_SET) + if (sdata->u.ibss.bssid) goto put_bss; /* not an IBSS */ @@ -369,13 +354,14 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, struct sta_info *sta; int band = local->hw.conf.channel->band; - /* TODO: Could consider removing the least recently used entry and - * allow new one to be added. */ + /* + * XXX: Consider removing the least recently used entry and + * allow new one to be added. + */ if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: No room for a new IBSS STA " - "entry %pM\n", sdata->dev->name, addr); - } + if (net_ratelimit()) + printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", + sdata->dev->name, addr); return NULL; } @@ -432,14 +418,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); + mod_timer(&ifibss->timer, + round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); + if (ieee80211_sta_active_ibss(sdata)) return; - if ((ifibss->flags & IEEE80211_IBSS_BSSID_SET) && - (!(ifibss->flags & IEEE80211_IBSS_AUTO_CHANNEL_SEL))) + if (ifibss->fixed_channel) return; printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " @@ -455,7 +442,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) ieee80211_request_scan(sdata, &sdata->local->int_scan_req); } -static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) +static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; @@ -466,7 +453,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) u16 capability; int i; - if (ifibss->flags & IEEE80211_IBSS_BSSID_SET) { + if (ifibss->fixed_bssid) { memcpy(bssid, ifibss->bssid, ETH_ALEN); } else { /* Generate random, not broadcast, locally administered BSSID. Mix in @@ -482,7 +469,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", sdata->dev->name, bssid); - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + sband = local->hw.wiphy->bands[ifibss->channel->band]; if (local->hw.conf.beacon_int == 0) local->hw.conf.beacon_int = 100; @@ -500,24 +487,20 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) *pos++ = (u8) (rate / 5); } - return __ieee80211_sta_join_ibss(sdata, - bssid, local->hw.conf.beacon_int, - local->hw.conf.channel->center_freq, - sband->n_bitrates, supp_rates, - capability, 0); + __ieee80211_sta_join_ibss(sdata, bssid, local->hw.conf.beacon_int, + ifibss->channel, sband->n_bitrates, + supp_rates, capability, 0); } -static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) +static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; struct ieee80211_bss *bss; + struct ieee80211_channel *chan = NULL; const u8 *bssid = NULL; int active_ibss; - if (ifibss->ssid_len == 0) - return -EINVAL; - active_ibss = ieee80211_sta_active_ibss(sdata); #ifdef CONFIG_MAC80211_IBSS_DEBUG printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", @@ -525,11 +508,15 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) #endif /* CONFIG_MAC80211_IBSS_DEBUG */ if (active_ibss) - return 0; + return; - if (ifibss->flags & IEEE80211_IBSS_BSSID_SET) + if (ifibss->fixed_bssid) + bssid = ifibss->bssid; + if (ifibss->fixed_channel) + chan = ifibss->channel; + if (!is_zero_ether_addr(ifibss->bssid)) bssid = ifibss->bssid; - bss = (void *)cfg80211_get_bss(local->hw.wiphy, NULL, bssid, + bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid, ifibss->ssid, ifibss->ssid_len, WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); @@ -540,18 +527,14 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) "%pM\n", bss->cbss.bssid, ifibss->bssid); #endif /* CONFIG_MAC80211_IBSS_DEBUG */ - if (bss && - (!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) || - memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN))) { - int ret; - + if (bss && memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) { printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" " based on configured SSID\n", sdata->dev->name, bss->cbss.bssid); - ret = ieee80211_sta_join_ibss(sdata, bss); + ieee80211_sta_join_ibss(sdata, bss); ieee80211_rx_bss_put(local, bss); - return ret; + return; } else if (bss) ieee80211_rx_bss_put(local, bss); @@ -562,29 +545,31 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) /* Selected IBSS not found in current scan results - try to scan */ if (ifibss->state == IEEE80211_IBSS_MLME_JOINED && !ieee80211_sta_active_ibss(sdata)) { - mod_timer(&ifibss->timer, jiffies + - IEEE80211_IBSS_MERGE_INTERVAL); - } else if (time_after(jiffies, local->last_scan_completed + + mod_timer(&ifibss->timer, + round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); + } else if (time_after(jiffies, ifibss->last_scan_completed + IEEE80211_SCAN_INTERVAL)) { printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " "join\n", sdata->dev->name); /* XXX maybe racy? */ if (local->scan_req) - return -EBUSY; + return; memcpy(local->int_scan_req.ssids[0].ssid, ifibss->ssid, IEEE80211_MAX_SSID_LEN); - local->int_scan_req.ssids[0].ssid_len = ifibss->ssid_len; - return ieee80211_request_scan(sdata, &local->int_scan_req); + local->int_scan_req.ssids[0].ssid_len = + ifibss->ssid_len; + ieee80211_request_scan(sdata, &local->int_scan_req); } else if (ifibss->state != IEEE80211_IBSS_MLME_JOINED) { int interval = IEEE80211_SCAN_INTERVAL; if (time_after(jiffies, ifibss->ibss_join_req + IEEE80211_IBSS_JOIN_TIMEOUT)) { - if (!(local->oper_channel->flags & - IEEE80211_CHAN_NO_IBSS)) - return ieee80211_sta_create_ibss(sdata); + if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { + ieee80211_sta_create_ibss(sdata); + return; + } printk(KERN_DEBUG "%s: IBSS not allowed on" " %d MHz\n", sdata->dev->name, local->hw.conf.channel->center_freq); @@ -595,11 +580,9 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) } ifibss->state = IEEE80211_IBSS_MLME_SEARCH; - mod_timer(&ifibss->timer, jiffies + interval); - return 0; + mod_timer(&ifibss->timer, + round_jiffies(jiffies + interval)); } - - return 0; } static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, @@ -614,7 +597,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, u8 *pos, *end; if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || - len < 24 + 2 || !ifibss->probe_resp) + len < 24 + 2 || !ifibss->presp) return; if (local->ops->tx_last_beacon) @@ -649,13 +632,13 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, } if (pos[1] != 0 && (pos[1] != ifibss->ssid_len || - memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len) != 0)) { + !memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { /* Ignore ProbeReq for foreign SSID */ return; } /* Reply with ProbeResp */ - skb = skb_copy(ifibss->probe_resp, GFP_KERNEL); + skb = skb_copy(ifibss->presp, GFP_KERNEL); if (!skb) return; @@ -794,89 +777,21 @@ void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) setup_timer(&ifibss->timer, ieee80211_ibss_timer, (unsigned long) sdata); skb_queue_head_init(&ifibss->skb_queue); - - ifibss->flags |= IEEE80211_IBSS_AUTO_BSSID_SEL | - IEEE80211_IBSS_AUTO_CHANNEL_SEL; -} - -int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata) -{ - struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - - ifibss->flags &= ~IEEE80211_IBSS_PREV_BSSID_SET; - - if (ifibss->ssid_len) - ifibss->flags |= IEEE80211_IBSS_SSID_SET; - else - ifibss->flags &= ~IEEE80211_IBSS_SSID_SET; - - ifibss->ibss_join_req = jiffies; - ifibss->state = IEEE80211_IBSS_MLME_SEARCH; - set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request); - - return 0; -} - -int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) -{ - struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - - if (len > IEEE80211_MAX_SSID_LEN) - return -EINVAL; - - if (ifibss->ssid_len != len || memcmp(ifibss->ssid, ssid, len) != 0) { - memset(ifibss->ssid, 0, sizeof(ifibss->ssid)); - memcpy(ifibss->ssid, ssid, len); - ifibss->ssid_len = len; - } - - return ieee80211_ibss_commit(sdata); -} - -int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) -{ - struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - - memcpy(ssid, ifibss->ssid, ifibss->ssid_len); - *len = ifibss->ssid_len; - - return 0; -} - -int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) -{ - struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - - if (is_valid_ether_addr(bssid)) { - memcpy(ifibss->bssid, bssid, ETH_ALEN); - ifibss->flags |= IEEE80211_IBSS_BSSID_SET; - } else { - memset(ifibss->bssid, 0, ETH_ALEN); - ifibss->flags &= ~IEEE80211_IBSS_BSSID_SET; - } - - if (netif_running(sdata->dev)) { - if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) { - printk(KERN_DEBUG "%s: Failed to config new BSSID to " - "the low-level driver\n", sdata->dev->name); - } - } - - return ieee80211_ibss_commit(sdata); } /* scan finished notification */ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) { - struct ieee80211_sub_if_data *sdata = local->scan_sdata; - struct ieee80211_if_ibss *ifibss; + struct ieee80211_sub_if_data *sdata; - if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) { - ifibss = &sdata->u.ibss; - if ((!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) || - !ieee80211_sta_active_ibss(sdata)) - ieee80211_sta_find_ibss(sdata); + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + if (sdata->vif.type != NL80211_IFTYPE_ADHOC) + continue; + sdata->u.ibss.last_scan_completed = jiffies; + ieee80211_sta_find_ibss(sdata); } + rcu_read_unlock(); } ieee80211_rx_result @@ -906,3 +821,71 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, return RX_DROP_MONITOR; } + +int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, + struct cfg80211_ibss_params *params) +{ + struct sk_buff *skb; + + memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN); + sdata->u.ibss.ssid_len = params->ssid_len; + + if (params->bssid) { + memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); + sdata->u.ibss.fixed_bssid = true; + } else + sdata->u.ibss.fixed_bssid = false; + + sdata->u.ibss.channel = params->channel; + sdata->u.ibss.fixed_channel = params->channel_fixed; + + if (params->ie) { + sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, + GFP_KERNEL); + if (sdata->u.ibss.ie) + sdata->u.ibss.ie_len = params->ie_len; + } + + skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + + 36 /* bitrates */ + + 34 /* SSID */ + + 3 /* DS params */ + + 4 /* IBSS params */ + + params->ie_len); + if (!skb) + return -ENOMEM; + + sdata->u.ibss.skb = skb; + sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; + sdata->u.ibss.ibss_join_req = jiffies; + + set_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request); + queue_work(sdata->local->hw.workqueue, &sdata->u.ibss.work); + + return 0; +} + +int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) +{ + struct sk_buff *skb; + + del_timer_sync(&sdata->u.ibss.timer); + clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request); + cancel_work_sync(&sdata->u.ibss.work); + clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request); + + sta_info_flush(sdata->local, sdata); + + /* remove beacon */ + kfree(sdata->u.ibss.ie); + skb = sdata->u.ibss.presp; + rcu_assign_pointer(sdata->u.ibss.presp, NULL); + ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED); + synchronize_rcu(); + kfree_skb(skb); + + skb_queue_purge(&sdata->u.ibss.skb_queue); + memset(sdata->u.ibss.bssid, 0, ETH_ALEN); + + return 0; +} diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 38c980612518..e770c1e8e08c 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -323,14 +323,6 @@ struct ieee80211_if_managed { size_t sme_auth_ie_len; }; -enum ieee80211_ibss_flags { - IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0), - IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1), - IEEE80211_IBSS_BSSID_SET = BIT(2), - IEEE80211_IBSS_PREV_BSSID_SET = BIT(3), - IEEE80211_IBSS_SSID_SET = BIT(4), -}; - enum ieee80211_ibss_request { IEEE80211_IBSS_REQ_RUN = 0, }; @@ -341,17 +333,20 @@ struct ieee80211_if_ibss { struct sk_buff_head skb_queue; - u8 ssid[IEEE80211_MAX_SSID_LEN]; - u8 ssid_len; - - u32 flags; + unsigned long request; + unsigned long last_scan_completed; + bool fixed_bssid; + bool fixed_channel; u8 bssid[ETH_ALEN]; - - unsigned long request; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 ssid_len, ie_len; + u8 *ie; + struct ieee80211_channel *channel; unsigned long ibss_join_req; - struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ + /* probe response/beacon for IBSS */ + struct sk_buff *presp, *skb; enum { IEEE80211_IBSS_MLME_SEARCH, @@ -630,8 +625,6 @@ struct ieee80211_local { spinlock_t sta_lock; unsigned long num_sta; struct list_head sta_list; - struct list_head sta_flush_list; - struct work_struct sta_flush_work; struct sta_info *sta_hash[STA_HASH_SIZE]; struct timer_list sta_cleanup; @@ -681,7 +674,6 @@ struct ieee80211_local { int scan_ies_len; enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; - unsigned long last_scan_completed; struct delayed_work scan_work; struct ieee80211_sub_if_data *scan_sdata; enum nl80211_channel_type oper_channel_type; @@ -946,10 +938,6 @@ int ieee80211_max_network_latency(struct notifier_block *nb, unsigned long data, void *dummy); /* IBSS code */ -int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata); -int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len); -int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len); -int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid); void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); ieee80211_rx_result @@ -957,6 +945,9 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, struct ieee80211_rx_status *rx_status); struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, u8 *bssid, u8 *addr, u32 supp_rates); +int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, + struct cfg80211_ibss_params *params); +int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); /* scan/BSS handling */ void ieee80211_scan_work(struct work_struct *work); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 5d60deb219d3..52425975bbbe 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -235,11 +235,7 @@ static int ieee80211_open(struct net_device *dev) netif_addr_unlock_bh(local->mdev); break; case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - if (sdata->vif.type == NL80211_IFTYPE_STATION) - sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET; - else - sdata->u.ibss.flags &= ~IEEE80211_IBSS_PREV_BSSID_SET; + sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET; /* fall through */ default: conf.vif = &sdata->vif; @@ -327,8 +323,6 @@ static int ieee80211_open(struct net_device *dev) */ if (sdata->vif.type == NL80211_IFTYPE_STATION) queue_work(local->hw.workqueue, &sdata->u.mgd.work); - else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) - queue_work(local->hw.workqueue, &sdata->u.ibss.work); netif_tx_start_all_queues(dev); @@ -499,7 +493,6 @@ static int ieee80211_stop(struct net_device *dev) /* fall through */ case NL80211_IFTYPE_ADHOC: if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - memset(sdata->u.ibss.bssid, 0, ETH_ALEN); del_timer_sync(&sdata->u.ibss.timer); cancel_work_sync(&sdata->u.ibss.work); synchronize_rcu(); @@ -653,7 +646,8 @@ static void ieee80211_teardown_sdata(struct net_device *dev) mesh_rmc_free(sdata); break; case NL80211_IFTYPE_ADHOC: - kfree_skb(sdata->u.ibss.probe_resp); + if (WARN_ON(sdata->u.ibss.presp)) + kfree_skb(sdata->u.ibss.presp); break; case NL80211_IFTYPE_STATION: kfree(sdata->u.mgd.extra_ie); diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 049ce8639806..d26fc399285e 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -209,7 +209,7 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) !!rcu_dereference(sdata->u.ap.beacon); break; case NL80211_IFTYPE_ADHOC: - conf.enable_beacon = !!sdata->u.ibss.probe_resp; + conf.enable_beacon = !!sdata->u.ibss.presp; break; case NL80211_IFTYPE_MESH_POINT: conf.enable_beacon = true; diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 20df861c6c4c..f25b07feabf9 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -295,8 +295,6 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) cfg80211_scan_done(local->scan_req, aborted); local->scan_req = NULL; - local->last_scan_completed = jiffies; - if (local->hw_scanning) { local->hw_scanning = false; /* diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index c5f14e6bbde2..654a8e963ccb 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -686,41 +686,10 @@ static void sta_info_debugfs_add_work(struct work_struct *work) } #endif -static void __ieee80211_run_pending_flush(struct ieee80211_local *local) -{ - struct sta_info *sta; - unsigned long flags; - - ASSERT_RTNL(); - - spin_lock_irqsave(&local->sta_lock, flags); - while (!list_empty(&local->sta_flush_list)) { - sta = list_first_entry(&local->sta_flush_list, - struct sta_info, list); - list_del(&sta->list); - spin_unlock_irqrestore(&local->sta_lock, flags); - sta_info_destroy(sta); - spin_lock_irqsave(&local->sta_lock, flags); - } - spin_unlock_irqrestore(&local->sta_lock, flags); -} - -static void ieee80211_sta_flush_work(struct work_struct *work) -{ - struct ieee80211_local *local = - container_of(work, struct ieee80211_local, sta_flush_work); - - rtnl_lock(); - __ieee80211_run_pending_flush(local); - rtnl_unlock(); -} - void sta_info_init(struct ieee80211_local *local) { spin_lock_init(&local->sta_lock); INIT_LIST_HEAD(&local->sta_list); - INIT_LIST_HEAD(&local->sta_flush_list); - INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work); setup_timer(&local->sta_cleanup, sta_info_cleanup, (unsigned long)local); @@ -741,7 +710,6 @@ int sta_info_start(struct ieee80211_local *local) void sta_info_stop(struct ieee80211_local *local) { del_timer(&local->sta_cleanup); - cancel_work_sync(&local->sta_flush_work); #ifdef CONFIG_MAC80211_DEBUGFS /* * Make sure the debugfs adding work isn't pending after this @@ -752,10 +720,7 @@ void sta_info_stop(struct ieee80211_local *local) cancel_work_sync(&local->sta_debugfs_add); #endif - rtnl_lock(); sta_info_flush(local, NULL); - __ieee80211_run_pending_flush(local); - rtnl_unlock(); } /** @@ -767,7 +732,7 @@ void sta_info_stop(struct ieee80211_local *local) * @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs */ int sta_info_flush(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata) + struct ieee80211_sub_if_data *sdata) { struct sta_info *sta, *tmp; LIST_HEAD(tmp_list); @@ -775,7 +740,6 @@ int sta_info_flush(struct ieee80211_local *local, unsigned long flags; might_sleep(); - ASSERT_RTNL(); spin_lock_irqsave(&local->sta_lock, flags); list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { @@ -795,39 +759,6 @@ int sta_info_flush(struct ieee80211_local *local, return ret; } -/** - * sta_info_flush_delayed - flush matching STA entries from the STA table - * - * This function unlinks all stations for a given interface and queues - * them for freeing. Note that the workqueue function scheduled here has - * to run before any new keys can be added to the system to avoid set_key() - * callback ordering issues. - * - * @sdata: the interface - */ -void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata) -{ - struct ieee80211_local *local = sdata->local; - struct sta_info *sta, *tmp; - unsigned long flags; - bool work = false; - - spin_lock_irqsave(&local->sta_lock, flags); - list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { - if (sdata == sta->sdata) { - __sta_info_unlink(&sta); - if (sta) { - list_add_tail(&sta->list, - &local->sta_flush_list); - work = true; - } - } - } - if (work) - schedule_work(&local->sta_flush_work); - spin_unlock_irqrestore(&local->sta_lock, flags); -} - void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time) { diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 5534d489f506..31a8990ce401 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -442,8 +442,7 @@ void sta_info_init(struct ieee80211_local *local); int sta_info_start(struct ieee80211_local *local); void sta_info_stop(struct ieee80211_local *local); int sta_info_flush(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata); -void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata); + struct ieee80211_sub_if_data *sdata); void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index f336cc731df6..c53d77db3e4f 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2102,18 +2102,18 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_hdr *hdr; + struct sk_buff *presp = rcu_dereference(ifibss->presp); - if (!ifibss->probe_resp) + if (!presp) goto out; - skb = skb_copy(ifibss->probe_resp, GFP_ATOMIC); + skb = skb_copy(presp, GFP_ATOMIC); if (!skb) goto out; hdr = (struct ieee80211_hdr *) skb->data; hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON); - } else if (ieee80211_vif_is_mesh(&sdata->vif)) { struct ieee80211_mgmt *mgmt; u8 *pos; diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index 896704cf94e1..eb63fc148019 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -149,17 +149,14 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev, struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->vif.type == NL80211_IFTYPE_ADHOC) - sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL; + return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra); else if (sdata->vif.type == NL80211_IFTYPE_STATION) sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL; /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */ if (freq->e == 0) { if (freq->m < 0) { - if (sdata->vif.type == NL80211_IFTYPE_ADHOC) - sdata->u.ibss.flags |= - IEEE80211_IBSS_AUTO_CHANNEL_SEL; - else if (sdata->vif.type == NL80211_IFTYPE_STATION) + if (sdata->vif.type == NL80211_IFTYPE_STATION) sdata->u.mgd.flags |= IEEE80211_STA_AUTO_CHANNEL_SEL; return 0; @@ -183,6 +180,10 @@ static int ieee80211_ioctl_giwfreq(struct net_device *dev, struct iw_freq *freq, char *extra) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra); freq->m = local->hw.conf.channel->center_freq; freq->e = 6; @@ -195,15 +196,17 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *ssid) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); size_t len = data->length; int ret; + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + return cfg80211_ibss_wext_siwessid(dev, info, data, ssid); + /* iwconfig uses nul termination in SSID.. */ if (len > 0 && ssid[len - 1] == '\0') len--; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->vif.type == NL80211_IFTYPE_STATION) { if (data->flags) sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL; @@ -217,8 +220,7 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev, sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; ieee80211_sta_req_auth(sdata); return 0; - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) - return ieee80211_ibss_set_ssid(sdata, ssid, len); + } return -EOPNOTSUPP; } @@ -229,9 +231,13 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev, struct iw_point *data, char *ssid) { size_t len; - struct ieee80211_sub_if_data *sdata; + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + return cfg80211_ibss_wext_giwessid(dev, info, data, ssid); + if (sdata->vif.type == NL80211_IFTYPE_STATION) { int res = ieee80211_sta_get_ssid(sdata, ssid, &len); if (res == 0) { @@ -240,14 +246,6 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev, } else data->flags = 0; return res; - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - int res = ieee80211_ibss_get_ssid(sdata, ssid, &len); - if (res == 0) { - data->length = len; - data->flags = 1; - } else - data->flags = 0; - return res; } return -EOPNOTSUPP; @@ -258,9 +256,11 @@ static int ieee80211_ioctl_siwap(struct net_device *dev, struct iw_request_info *info, struct sockaddr *ap_addr, char *extra) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra); - sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->vif.type == NL80211_IFTYPE_STATION) { int ret; @@ -277,16 +277,6 @@ static int ieee80211_ioctl_siwap(struct net_device *dev, sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; ieee80211_sta_req_auth(sdata); return 0; - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - if (is_zero_ether_addr((u8 *) &ap_addr->sa_data)) - sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL | - IEEE80211_IBSS_AUTO_CHANNEL_SEL; - else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data)) - sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL; - else - sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL; - - return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data); } else if (sdata->vif.type == NL80211_IFTYPE_WDS) { /* * If it is necessary to update the WDS peer address @@ -312,9 +302,11 @@ static int ieee80211_ioctl_giwap(struct net_device *dev, struct iw_request_info *info, struct sockaddr *ap_addr, char *extra) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra); - sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->vif.type == NL80211_IFTYPE_STATION) { if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) { ap_addr->sa_family = ARPHRD_ETHER; @@ -322,13 +314,6 @@ static int ieee80211_ioctl_giwap(struct net_device *dev, } else memset(&ap_addr->sa_data, 0, ETH_ALEN); return 0; - } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) { - ap_addr->sa_family = ARPHRD_ETHER; - memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN); - } else - memset(&ap_addr->sa_data, 0, ETH_ALEN); - return 0; } else if (sdata->vif.type == NL80211_IFTYPE_WDS) { ap_addr->sa_family = ARPHRD_ETHER; memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN); |