diff options
Diffstat (limited to 'net/mac80211/cfg.c')
-rw-r--r-- | net/mac80211/cfg.c | 146 |
1 files changed, 59 insertions, 87 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index c3de921c8cf..f7eb25aabf8 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -489,27 +489,13 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, return ret; } -static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata, - struct beacon_parameters *params) -{ - struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; - - bss_conf->ssid_len = params->ssid_len; - - if (params->ssid_len) - memcpy(bss_conf->ssid, params->ssid, params->ssid_len); - - bss_conf->hidden_ssid = - (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); -} - static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, - u8 *resp, size_t resp_len) + const u8 *resp, size_t resp_len) { struct sk_buff *new, *old; if (!resp || !resp_len) - return -EINVAL; + return 1; old = rtnl_dereference(sdata->u.ap.probe_resp); @@ -520,50 +506,28 @@ static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, memcpy(skb_put(new, resp_len), resp, resp_len); rcu_assign_pointer(sdata->u.ap.probe_resp, new); - synchronize_rcu(); - - if (old) + if (old) { + /* TODO: use call_rcu() */ + synchronize_rcu(); dev_kfree_skb(old); + } return 0; } -/* - * This handles both adding a beacon and setting new beacon info - */ -static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, - struct beacon_parameters *params) +static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, + struct cfg80211_beacon_data *params) { struct beacon_data *new, *old; int new_head_len, new_tail_len; - int size; - int err = -EINVAL; - u32 changed = 0; + int size, err; + u32 changed = BSS_CHANGED_BEACON; old = rtnl_dereference(sdata->u.ap.beacon); - /* head must not be zero-length */ - if (params->head && !params->head_len) - return -EINVAL; - - /* - * This is a kludge. beacon interval should really be part - * of the beacon information. - */ - if (params->interval && - (sdata->vif.bss_conf.beacon_int != params->interval)) { - sdata->vif.bss_conf.beacon_int = params->interval; - ieee80211_bss_info_change_notify(sdata, - BSS_CHANGED_BEACON_INT); - } - /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) - return err; - - /* sorry, no way to start beaconing without dtim period */ - if (!params->dtim_period && !old) - return err; + return -EINVAL; /* new or old head? */ if (params->head) @@ -586,12 +550,6 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, /* start filling the new info now */ - /* new or old dtim period? */ - if (params->dtim_period) - new->dtim_period = params->dtim_period; - else - new->dtim_period = old->dtim_period; - /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | @@ -614,46 +572,37 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, if (old) memcpy(new->tail, old->tail, new_tail_len); - sdata->vif.bss_conf.dtim_period = new->dtim_period; - - rcu_assign_pointer(sdata->u.ap.beacon, new); - - synchronize_rcu(); - - kfree(old); - err = ieee80211_set_probe_resp(sdata, params->probe_resp, params->probe_resp_len); - if (!err) + if (err < 0) + return err; + if (err == 0) changed |= BSS_CHANGED_AP_PROBE_RESP; - ieee80211_config_ap_ssid(sdata, params); - changed |= BSS_CHANGED_BEACON_ENABLED | - BSS_CHANGED_BEACON | - BSS_CHANGED_SSID; + rcu_assign_pointer(sdata->u.ap.beacon, new); + + if (old) + kfree_rcu(old, rcu_head); - ieee80211_bss_info_change_notify(sdata, changed); - return 0; + return changed; } -static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, - struct beacon_parameters *params) +static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ap_settings *params) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct beacon_data *old; struct ieee80211_sub_if_data *vlan; - int ret; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + u32 changed = BSS_CHANGED_BEACON_INT | + BSS_CHANGED_BEACON_ENABLED | + BSS_CHANGED_BEACON | + BSS_CHANGED_SSID; + int err; old = rtnl_dereference(sdata->u.ap.beacon); if (old) return -EALREADY; - ret = ieee80211_config_beacon(sdata, params); - if (ret) - return ret; - /* * Apply control port protocol, this allows us to * not encrypt dynamic WEP control frames. @@ -667,14 +616,32 @@ static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, params->crypto.control_port_no_encrypt; } + sdata->vif.bss_conf.beacon_int = params->beacon_interval; + sdata->vif.bss_conf.dtim_period = params->dtim_period; + + sdata->vif.bss_conf.ssid_len = params->ssid_len; + if (params->ssid_len) + memcpy(sdata->vif.bss_conf.ssid, params->ssid, + params->ssid_len); + sdata->vif.bss_conf.hidden_ssid = + (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); + + err = ieee80211_assign_beacon(sdata, ¶ms->beacon); + if (err < 0) + return err; + changed |= err; + + ieee80211_bss_info_change_notify(sdata, changed); + return 0; } -static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, - struct beacon_parameters *params) +static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_beacon_data *params) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; + int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -682,10 +649,14 @@ static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, if (!old) return -ENOENT; - return ieee80211_config_beacon(sdata, params); + err = ieee80211_assign_beacon(sdata, params); + if (err < 0) + return err; + ieee80211_bss_info_change_notify(sdata, err); + return 0; } -static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) +static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; @@ -697,10 +668,11 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) return -ENOENT; RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); - synchronize_rcu(); - kfree(old); + + kfree_rcu(old, rcu_head); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + return 0; } @@ -2699,9 +2671,9 @@ struct cfg80211_ops mac80211_config_ops = { .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, - .add_beacon = ieee80211_add_beacon, - .set_beacon = ieee80211_set_beacon, - .del_beacon = ieee80211_del_beacon, + .start_ap = ieee80211_start_ap, + .change_beacon = ieee80211_change_beacon, + .stop_ap = ieee80211_stop_ap, .add_station = ieee80211_add_station, .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, |