From: Avinash Patil Date: Wed, 28 Jan 2015 10:12:00 +0000 (+0530) Subject: mwifiex: do not declare wdev as pointer X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4facc34a1f1d6ba8fafc9afdb84f9c6ed4334c4c;p=deliverable%2Flinux.git mwifiex: do not declare wdev as pointer wdev is used even after del_virtual_interface handler in cfg80211 in nl80211_post_doit. Since we have freed wdev in handling of del_virtual_intf, this can result into crash while deleting interface. Avoid this be not declaring wdev which part of mwifiex_private structure but struct wireless_dev type. Signed-off-by: Avinash Patil Signed-off-by: Amitkumar Karwar Signed-off-by: Cathy Luo Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/mwifiex/11h.c b/drivers/net/wireless/mwifiex/11h.c index 2668e83afbb6..f23b647a1411 100644 --- a/drivers/net/wireless/mwifiex/11h.c +++ b/drivers/net/wireless/mwifiex/11h.c @@ -39,7 +39,7 @@ mwifiex_11h_process_infra_join(struct mwifiex_private *priv, u8 **buffer, return; radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); - sband = priv->wdev->wiphy->bands[radio_type]; + sband = priv->wdev.wiphy->bands[radio_type]; cap = (struct mwifiex_ie_types_pwr_capability *)*buffer; cap->header.type = cpu_to_le16(WLAN_EID_PWR_CAPABILITY); diff --git a/drivers/net/wireless/mwifiex/11n.c b/drivers/net/wireless/mwifiex/11n.c index c5c83cf664d8..543148d27b01 100644 --- a/drivers/net/wireless/mwifiex/11n.c +++ b/drivers/net/wireless/mwifiex/11n.c @@ -39,7 +39,7 @@ int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type, { uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info); struct ieee80211_supported_band *sband = - priv->wdev->wiphy->bands[radio_type]; + priv->wdev.wiphy->bands[radio_type]; if (WARN_ON_ONCE(!sband)) { dev_err(priv->adapter->dev, "Invalid radio type!\n"); @@ -314,7 +314,7 @@ mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv, return ret_len; radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); - sband = priv->wdev->wiphy->bands[radio_type]; + sband = priv->wdev.wiphy->bands[radio_type]; if (bss_desc->bcn_ht_cap) { ht_cap = (struct mwifiex_ie_types_htcap *) *buffer; diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c index c7ca5b734875..a2e8817b56d8 100644 --- a/drivers/net/wireless/mwifiex/11n_rxreorder.c +++ b/drivers/net/wireless/mwifiex/11n_rxreorder.c @@ -45,7 +45,7 @@ static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private *priv, skb_trim(skb, le16_to_cpu(local_rx_pd->rx_pkt_length)); ieee80211_amsdu_to_8023s(skb, &list, priv->curr_addr, - priv->wdev->iftype, 0, false); + priv->wdev.iftype, 0, false); while (!skb_queue_empty(&list)) { rx_skb = __skb_dequeue(&list); diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index dd0e410559f8..9710b23f65a9 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -1590,15 +1590,15 @@ static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv) ie_len = ie_buf[1] + sizeof(struct ieee_types_header); band = mwifiex_band_to_radio_type(priv->curr_bss_params.band); - chan = __ieee80211_get_channel(priv->wdev->wiphy, + chan = __ieee80211_get_channel(priv->wdev.wiphy, ieee80211_channel_to_frequency(bss_info.bss_chan, band)); - bss = cfg80211_inform_bss(priv->wdev->wiphy, chan, + bss = cfg80211_inform_bss(priv->wdev.wiphy, chan, CFG80211_BSS_FTYPE_UNKNOWN, bss_info.bssid, 0, WLAN_CAPABILITY_IBSS, 0, ie_buf, ie_len, 0, GFP_KERNEL); - cfg80211_put_bss(priv->wdev->wiphy, bss); + cfg80211_put_bss(priv->wdev.wiphy, bss); memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN); return 0; @@ -1719,12 +1719,12 @@ done: /* Find the BSS we want using available scan results */ if (mode == NL80211_IFTYPE_ADHOC) - bss = cfg80211_get_bss(priv->wdev->wiphy, channel, + bss = cfg80211_get_bss(priv->wdev.wiphy, channel, bssid, ssid, ssid_len, WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); else - bss = cfg80211_get_bss(priv->wdev->wiphy, channel, + bss = cfg80211_get_bss(priv->wdev.wiphy, channel, bssid, ssid, ssid_len, WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); @@ -1781,7 +1781,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, return -EINVAL; } - if (priv->wdev && priv->wdev->current_bss) { + if (priv->wdev.current_bss) { wiphy_warn(wiphy, "%s: already connected\n", dev->name); return -EALREADY; } @@ -1839,7 +1839,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, static int mwifiex_set_ibss_params(struct mwifiex_private *priv, struct cfg80211_ibss_params *params) { - struct wiphy *wiphy = priv->wdev->wiphy; + struct wiphy *wiphy = priv->wdev.wiphy; struct mwifiex_adapter *adapter = priv->adapter; int index = 0, i; u8 config_bands = 0; @@ -2177,7 +2177,6 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, struct mwifiex_private *priv; struct net_device *dev; void *mdev_priv; - struct wireless_dev *wdev; if (!adapter) return ERR_PTR(-EFAULT); @@ -2193,13 +2192,8 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, return ERR_PTR(-EINVAL); } - wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); - if (!wdev) - return ERR_PTR(-ENOMEM); - - wdev->wiphy = wiphy; - priv->wdev = wdev; - wdev->iftype = NL80211_IFTYPE_STATION; + priv->wdev.wiphy = wiphy; + priv->wdev.iftype = NL80211_IFTYPE_STATION; if (type == NL80211_IFTYPE_UNSPECIFIED) priv->bss_mode = NL80211_IFTYPE_STATION; @@ -2221,13 +2215,8 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, return ERR_PTR(-EINVAL); } - wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); - if (!wdev) - return ERR_PTR(-ENOMEM); - - priv->wdev = wdev; - wdev->wiphy = wiphy; - wdev->iftype = NL80211_IFTYPE_AP; + priv->wdev.wiphy = wiphy; + priv->wdev.iftype = NL80211_IFTYPE_AP; priv->bss_type = MWIFIEX_BSS_TYPE_UAP; priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II; @@ -2246,17 +2235,12 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, return ERR_PTR(-EINVAL); } - wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); - if (!wdev) - return ERR_PTR(-ENOMEM); - - priv->wdev = wdev; - wdev->wiphy = wiphy; + priv->wdev.wiphy = wiphy; /* At start-up, wpa_supplicant tries to change the interface * to NL80211_IFTYPE_STATION if it is not managed mode. */ - wdev->iftype = NL80211_IFTYPE_P2P_CLIENT; + priv->wdev.iftype = NL80211_IFTYPE_P2P_CLIENT; priv->bss_mode = NL80211_IFTYPE_P2P_CLIENT; /* Setting bss_type to P2P tells firmware that this interface @@ -2272,8 +2256,9 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, priv->bss_num = 0; if (mwifiex_cfg80211_init_p2p_client(priv)) { - wdev = ERR_PTR(-EFAULT); - goto done; + memset(&priv->wdev, 0, sizeof(priv->wdev)); + priv->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; + return ERR_PTR(-EFAULT); } break; @@ -2287,9 +2272,10 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, IEEE80211_NUM_ACS, 1); if (!dev) { wiphy_err(wiphy, "no memory available for netdevice\n"); + memset(&priv->wdev, 0, sizeof(priv->wdev)); + priv->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; - wdev = ERR_PTR(-ENOMEM); - goto done; + return ERR_PTR(-ENOMEM); } mwifiex_init_priv_params(priv, dev); @@ -2309,7 +2295,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, &wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap, priv); dev_net_set(dev, wiphy_net(wiphy)); - dev->ieee80211_ptr = priv->wdev; + dev->ieee80211_ptr = &priv->wdev; dev->ieee80211_ptr->iftype = priv->bss_mode; memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN); SET_NETDEV_DEV(dev, wiphy_dev(wiphy)); @@ -2330,8 +2316,9 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, free_netdev(dev); priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; priv->netdev = NULL; - wdev = ERR_PTR(-EFAULT); - goto done; + memset(&priv->wdev, 0, sizeof(priv->wdev)); + priv->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; + return ERR_PTR(-EFAULT); } sema_init(&priv->async_sem, 1); @@ -2342,13 +2329,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, mwifiex_dev_debugfs_init(priv); #endif -done: - if (IS_ERR(wdev)) { - kfree(priv->wdev); - priv->wdev = NULL; - } - - return wdev; + return &priv->wdev; } EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf); @@ -2374,8 +2355,7 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev) /* Clear the priv in adapter */ priv->netdev->ieee80211_ptr = NULL; priv->netdev = NULL; - kfree(wdev); - priv->wdev = NULL; + priv->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; priv->media_connected = false; diff --git a/drivers/net/wireless/mwifiex/cfp.c b/drivers/net/wireless/mwifiex/cfp.c index f494fc7eeb62..e9df8826f124 100644 --- a/drivers/net/wireless/mwifiex/cfp.c +++ b/drivers/net/wireless/mwifiex/cfp.c @@ -322,9 +322,9 @@ mwifiex_get_cfp(struct mwifiex_private *priv, u8 band, u16 channel, u32 freq) return cfp; if (mwifiex_band_to_radio_type(band) == HostCmd_SCAN_RADIO_TYPE_BG) - sband = priv->wdev->wiphy->bands[IEEE80211_BAND_2GHZ]; + sband = priv->wdev.wiphy->bands[IEEE80211_BAND_2GHZ]; else - sband = priv->wdev->wiphy->bands[IEEE80211_BAND_5GHZ]; + sband = priv->wdev.wiphy->bands[IEEE80211_BAND_5GHZ]; if (!sband) { dev_err(priv->adapter->dev, "%s: cannot find cfp by band %d\n", diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c index 99cd3604b3f3..49dec6b4dc96 100644 --- a/drivers/net/wireless/mwifiex/main.c +++ b/drivers/net/wireless/mwifiex/main.c @@ -1203,8 +1203,9 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) continue; rtnl_lock(); - if (priv->wdev && priv->netdev) - mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); + if (priv->netdev && + priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) + mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); rtnl_unlock(); } diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index 99792b885b79..a560179cdb7b 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -547,7 +547,7 @@ struct mwifiex_private { u32 curr_bcn_size; /* spin lock for beacon buffer */ spinlock_t curr_bcn_buf_lock; - struct wireless_dev *wdev; + struct wireless_dev wdev; struct mwifiex_chan_freq_power cfp; char version_str[128]; #ifdef CONFIG_DEBUG_FS diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c index e304f0731647..0ffdb7c5afd2 100644 --- a/drivers/net/wireless/mwifiex/scan.c +++ b/drivers/net/wireless/mwifiex/scan.c @@ -496,10 +496,10 @@ mwifiex_scan_create_channel_list(struct mwifiex_private *priv, for (band = 0; (band < IEEE80211_NUM_BANDS) ; band++) { - if (!priv->wdev->wiphy->bands[band]) + if (!priv->wdev.wiphy->bands[band]) continue; - sband = priv->wdev->wiphy->bands[band]; + sband = priv->wdev.wiphy->bands[band]; for (i = 0; (i < sband->n_channels) ; i++) { ch = &sband->channels[i]; @@ -1733,10 +1733,10 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, freq = cfp ? cfp->freq : 0; - chan = ieee80211_get_channel(priv->wdev->wiphy, freq); + chan = ieee80211_get_channel(priv->wdev.wiphy, freq); if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { - bss = cfg80211_inform_bss(priv->wdev->wiphy, + bss = cfg80211_inform_bss(priv->wdev.wiphy, chan, CFG80211_BSS_FTYPE_UNKNOWN, bssid, timestamp, cap_info_bitmap, beacon_period, @@ -1748,7 +1748,7 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, !memcmp(bssid, priv->curr_bss_params.bss_descriptor .mac_address, ETH_ALEN)) mwifiex_update_curr_bss_params(priv, bss); - cfg80211_put_bss(priv->wdev->wiphy, bss); + cfg80211_put_bss(priv->wdev.wiphy, bss); } } else { dev_dbg(adapter->dev, "missing BSS channel IE\n"); diff --git a/drivers/net/wireless/mwifiex/sta_event.c b/drivers/net/wireless/mwifiex/sta_event.c index 419e35f1dbf3..c37e8cb2dd32 100644 --- a/drivers/net/wireless/mwifiex/sta_event.c +++ b/drivers/net/wireless/mwifiex/sta_event.c @@ -487,7 +487,7 @@ int mwifiex_process_sta_event(struct mwifiex_private *priv) case EVENT_REMAIN_ON_CHAN_EXPIRED: dev_dbg(adapter->dev, "event: Remain on channel expired\n"); - cfg80211_remain_on_channel_expired(priv->wdev, + cfg80211_remain_on_channel_expired(&priv->wdev, priv->roc_cfg.cookie, &priv->roc_cfg.chan, GFP_ATOMIC); diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c index fb9c5fc83e5d..329cd515316c 100644 --- a/drivers/net/wireless/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/mwifiex/sta_ioctl.c @@ -219,7 +219,7 @@ static int mwifiex_process_country_ie(struct mwifiex_private *priv, if (!strncmp(priv->adapter->country_code, &country_ie[2], 2)) { rcu_read_unlock(); - wiphy_dbg(priv->wdev->wiphy, + wiphy_dbg(priv->wdev.wiphy, "11D: skip setting domain info in FW\n"); return 0; } diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c index 6ae133333363..ac93557cbdc9 100644 --- a/drivers/net/wireless/mwifiex/txrx.c +++ b/drivers/net/wireless/mwifiex/txrx.c @@ -227,7 +227,7 @@ void mwifiex_parse_tx_status_event(struct mwifiex_private *priv, /* consumes ack_skb */ skb_complete_wifi_ack(ack_skb, !tx_status->status); } else { - cfg80211_mgmt_tx_status(priv->wdev, tx_info->cookie, + cfg80211_mgmt_tx_status(&priv->wdev, tx_info->cookie, ack_skb->data, ack_skb->len, !tx_status->status, GFP_ATOMIC); dev_kfree_skb_any(ack_skb); diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c index 707319799942..308550611f22 100644 --- a/drivers/net/wireless/mwifiex/util.c +++ b/drivers/net/wireless/mwifiex/util.c @@ -387,7 +387,7 @@ mwifiex_process_mgmt_packet(struct mwifiex_private *priv, pkt_len -= ETH_ALEN + sizeof(pkt_len); rx_pd->rx_pkt_length = cpu_to_le16(pkt_len); - cfg80211_rx_mgmt(priv->wdev, priv->roc_cfg.chan.center_freq, + cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq, CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len, 0);