diff options
Diffstat (limited to 'net/mac80211/mlme.c')
| -rw-r--r-- | net/mac80211/mlme.c | 77 |
1 files changed, 46 insertions, 31 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 209abb073dfb..8f30f4d19da0 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -30,7 +30,7 @@ #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) #define IEEE80211_ASSOC_MAX_TRIES 3 #define IEEE80211_MONITORING_INTERVAL (2 * HZ) -#define IEEE80211_PROBE_INTERVAL (60 * HZ) +#define IEEE80211_PROBE_IDLE_TIME (60 * HZ) #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) /* utils */ @@ -930,7 +930,7 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sta_info *sta; - int disassoc; + bool disassoc = false; /* TODO: start monitoring current AP signal quality and number of * missed beacons. Scan other channels every now and then and search @@ -945,36 +945,39 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) if (!sta) { printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", sdata->dev->name, ifmgd->bssid); - disassoc = 1; - } else { - disassoc = 0; - if (time_after(jiffies, - sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { - if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { - printk(KERN_DEBUG "%s: No ProbeResp from " - "current AP %pM - assume out of " - "range\n", - sdata->dev->name, ifmgd->bssid); - disassoc = 1; - } else - ieee80211_send_probe_req(sdata, ifmgd->bssid, - ifmgd->ssid, - ifmgd->ssid_len, - NULL, 0); - ifmgd->flags ^= IEEE80211_STA_PROBEREQ_POLL; - } else { - ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; - if (time_after(jiffies, ifmgd->last_probe + - IEEE80211_PROBE_INTERVAL)) { - ifmgd->last_probe = jiffies; - ieee80211_send_probe_req(sdata, ifmgd->bssid, - ifmgd->ssid, - ifmgd->ssid_len, - NULL, 0); - } - } + disassoc = true; + goto unlock; + } + + if ((ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) && + time_after(jiffies, sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { + printk(KERN_DEBUG "%s: no probe response from AP %pM " + "- disassociating\n", + sdata->dev->name, ifmgd->bssid); + disassoc = true; + ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; + goto unlock; + } + + if (time_after(jiffies, + ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) { + printk(KERN_DEBUG "%s: beacon loss from AP %pM " + "- sending probe request\n", + sdata->dev->name, ifmgd->bssid); + ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; + ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, + ifmgd->ssid_len, NULL, 0); + goto unlock; + + } + + if (time_after(jiffies, sta->last_rx + IEEE80211_PROBE_IDLE_TIME)) { + ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; + ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, + ifmgd->ssid_len, NULL, 0); } + unlock: rcu_read_unlock(); if (disassoc) @@ -1374,6 +1377,12 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, bss_conf->assoc_capability = capab_info; ieee80211_set_associated(sdata, changed); + /* + * initialise the time of last beacon to be the association time, + * otherwise beacon loss check will trigger immediately + */ + ifmgd->last_beacon = jiffies; + ieee80211_associated(sdata); cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); } @@ -1422,9 +1431,12 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, size_t len, struct ieee80211_rx_status *rx_status) { + struct ieee80211_if_managed *ifmgd; size_t baselen; struct ieee802_11_elems elems; + ifmgd = &sdata->u.mgd; + if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) return; /* ignore ProbeResp to foreign address */ @@ -1439,11 +1451,14 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, /* direct probe may be part of the association flow */ if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, - &sdata->u.mgd.request)) { + &ifmgd->request)) { printk(KERN_DEBUG "%s direct probe responded\n", sdata->dev->name); ieee80211_authenticate(sdata); } + + if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) + ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; } static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |