X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fmac80211%2Fieee80211.c;h=6378850d85805860416e9e67f7b0e308e76e6e0a;hb=55d1bb9a3b0f7f791ce597086791ebe54ea4c46a;hp=ccf84634f15692c89a6b2a20644e99df0695fb43;hpb=79010420cc3f78eab911598bfdd29c4b06a83e1f;p=linux-2.6 diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index ccf84634f1..6378850d85 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -24,7 +24,6 @@ #include #include -#include "ieee80211_common.h" #include "ieee80211_i.h" #include "ieee80211_rate.h" #include "wep.h" @@ -59,10 +58,10 @@ static void ieee80211_configure_filter(struct ieee80211_local *local) unsigned int changed_flags; unsigned int new_flags = 0; - if (local->iff_promiscs) + if (atomic_read(&local->iff_promiscs)) new_flags |= FIF_PROMISC_IN_BSS; - if (local->iff_allmultis) + if (atomic_read(&local->iff_allmultis)) new_flags |= FIF_ALLMULTI; if (local->monitors) @@ -123,152 +122,6 @@ static void ieee80211_master_set_multicast_list(struct net_device *dev) ieee80211_configure_filter(local); } -/* management interface */ - -static void -ieee80211_fill_frame_info(struct ieee80211_local *local, - struct ieee80211_frame_info *fi, - struct ieee80211_rx_status *status) -{ - if (status) { - struct timespec ts; - struct ieee80211_rate *rate; - - jiffies_to_timespec(jiffies, &ts); - fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 + - ts.tv_nsec / 1000); - fi->mactime = cpu_to_be64(status->mactime); - switch (status->phymode) { - case MODE_IEEE80211A: - fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a); - break; - case MODE_IEEE80211B: - fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b); - break; - case MODE_IEEE80211G: - fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g); - break; - default: - fi->phytype = htonl(0xAAAAAAAA); - break; - } - fi->channel = htonl(status->channel); - rate = ieee80211_get_rate(local, status->phymode, - status->rate); - if (rate) { - fi->datarate = htonl(rate->rate); - if (rate->flags & IEEE80211_RATE_PREAMBLE2) { - if (status->rate == rate->val) - fi->preamble = htonl(2); /* long */ - else if (status->rate == rate->val2) - fi->preamble = htonl(1); /* short */ - } else - fi->preamble = htonl(0); - } else { - fi->datarate = htonl(0); - fi->preamble = htonl(0); - } - - fi->antenna = htonl(status->antenna); - fi->priority = htonl(0xffffffff); /* no clue */ - fi->ssi_type = htonl(ieee80211_ssi_raw); - fi->ssi_signal = htonl(status->ssi); - fi->ssi_noise = 0x00000000; - fi->encoding = 0; - } else { - /* clear everything because we really don't know. - * the msg_type field isn't present on monitor frames - * so we don't know whether it will be present or not, - * but it's ok to not clear it since it'll be assigned - * anyway */ - memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type)); - - fi->ssi_type = htonl(ieee80211_ssi_none); - } - fi->version = htonl(IEEE80211_FI_VERSION); - fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type)); -} - -/* this routine is actually not just for this, but also - * for pushing fake 'management' frames into userspace. - * it shall be replaced by a netlink-based system. */ -void -ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, - struct ieee80211_rx_status *status, u32 msg_type) -{ - struct ieee80211_frame_info *fi; - const size_t hlen = sizeof(struct ieee80211_frame_info); - struct net_device *dev = local->apdev; - - skb->dev = dev; - - if (skb_headroom(skb) < hlen) { - I802_DEBUG_INC(local->rx_expand_skb_head); - if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) { - dev_kfree_skb(skb); - return; - } - } - - fi = (struct ieee80211_frame_info *) skb_push(skb, hlen); - - ieee80211_fill_frame_info(local, fi, status); - fi->msg_type = htonl(msg_type); - - dev->stats.rx_packets++; - dev->stats.rx_bytes += skb->len; - - skb_set_mac_header(skb, 0); - skb->ip_summed = CHECKSUM_UNNECESSARY; - skb->pkt_type = PACKET_OTHERHOST; - skb->protocol = htons(ETH_P_802_2); - memset(skb->cb, 0, sizeof(skb->cb)); - netif_rx(skb); -} - -static int ieee80211_mgmt_open(struct net_device *dev) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - if (!netif_running(local->mdev)) - return -EOPNOTSUPP; - return 0; -} - -static int ieee80211_mgmt_stop(struct net_device *dev) -{ - return 0; -} - -static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu) -{ - /* FIX: what would be proper limits for MTU? - * This interface uses 802.11 frames. */ - if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) { - printk(KERN_WARNING "%s: invalid MTU %d\n", - dev->name, new_mtu); - return -EINVAL; - } - -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ - dev->mtu = new_mtu; - return 0; -} - -void ieee80211_if_mgmt_setup(struct net_device *dev) -{ - ether_setup(dev); - dev->hard_start_xmit = ieee80211_mgmt_start_xmit; - dev->change_mtu = ieee80211_change_mtu_apdev; - dev->open = ieee80211_mgmt_open; - dev->stop = ieee80211_mgmt_stop; - dev->type = ARPHRD_IEEE80211_PRISM; - dev->uninit = ieee80211_if_reinit; - dev->destructor = ieee80211_if_free; -} - /* regular interfaces */ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) @@ -345,6 +198,16 @@ static int ieee80211_open(struct net_device *dev) if (!sdata->u.vlan.ap) return -ENOLINK; break; + case IEEE80211_IF_TYPE_AP: + case IEEE80211_IF_TYPE_STA: + case IEEE80211_IF_TYPE_MNTR: + case IEEE80211_IF_TYPE_IBSS: + /* no special treatment */ + break; + case IEEE80211_IF_TYPE_INVALID: + /* cannot happen */ + WARN_ON(1); + break; } if (local->open_count == 0) { @@ -353,6 +216,7 @@ static int ieee80211_open(struct net_device *dev) res = local->ops->start(local_to_hw(local)); if (res) return res; + ieee80211_hw_config(local); } switch (sdata->type) { @@ -369,7 +233,6 @@ static int ieee80211_open(struct net_device *dev) netif_tx_unlock_bh(local->mdev); local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; - ieee80211_hw_config(local); } break; case IEEE80211_IF_TYPE_STA: @@ -391,7 +254,7 @@ static int ieee80211_open(struct net_device *dev) ieee80211_enable_keys(sdata); if (sdata->type == IEEE80211_IF_TYPE_STA && - !local->user_space_mlme) + !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) netif_carrier_off(dev); else netif_carrier_on(dev); @@ -400,14 +263,21 @@ static int ieee80211_open(struct net_device *dev) if (local->open_count == 0) { res = dev_open(local->mdev); WARN_ON(res); - if (local->apdev) { - res = dev_open(local->apdev); - WARN_ON(res); - } tasklet_enable(&local->tx_pending_tasklet); tasklet_enable(&local->tasklet); } + /* + * set_multicast_list will be invoked by the networking core + * which will check whether any increments here were done in + * error and sync them down to the hardware as filter flags. + */ + if (sdata->flags & IEEE80211_SDATA_ALLMULTI) + atomic_inc(&local->iff_allmultis); + + if (sdata->flags & IEEE80211_SDATA_PROMISC) + atomic_inc(&local->iff_promiscs); + local->open_count++; netif_start_queue(dev); @@ -425,6 +295,18 @@ static int ieee80211_stop(struct net_device *dev) netif_stop_queue(dev); + /* + * Don't count this interface for promisc/allmulti while it + * is down. dev_mc_unsync() will invoke set_multicast_list + * on the master interface which will sync these down to the + * hardware as filter flags. + */ + if (sdata->flags & IEEE80211_SDATA_ALLMULTI) + atomic_dec(&local->iff_allmultis); + + if (sdata->flags & IEEE80211_SDATA_PROMISC) + atomic_dec(&local->iff_promiscs); + dev_mc_unsync(local->mdev, dev); /* down all dependent devices, that is VLANs */ @@ -452,8 +334,7 @@ static int ieee80211_stop(struct net_device *dev) ieee80211_configure_filter(local); netif_tx_unlock_bh(local->mdev); - local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; - ieee80211_hw_config(local); + local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; } break; case IEEE80211_IF_TYPE_STA: @@ -475,6 +356,11 @@ static int ieee80211_stop(struct net_device *dev) cancel_delayed_work(&local->scan_work); } flush_workqueue(local->hw.workqueue); + + sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; + kfree(sdata->u.sta.extra_ie); + sdata->u.sta.extra_ie = NULL; + sdata->u.sta.extra_ie_len = 0; /* fall through */ default: conf.if_id = dev->ifindex; @@ -489,9 +375,6 @@ static int ieee80211_stop(struct net_device *dev) if (netif_running(local->mdev)) dev_close(local->mdev); - if (local->apdev) - dev_close(local->apdev); - if (local->ops->stop) local->ops->stop(local_to_hw(local)); @@ -510,22 +393,22 @@ static void ieee80211_set_multicast_list(struct net_device *dev) allmulti = !!(dev->flags & IFF_ALLMULTI); promisc = !!(dev->flags & IFF_PROMISC); - sdata_allmulti = sdata->flags & IEEE80211_SDATA_ALLMULTI; - sdata_promisc = sdata->flags & IEEE80211_SDATA_PROMISC; + sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); + sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); if (allmulti != sdata_allmulti) { if (dev->flags & IFF_ALLMULTI) - local->iff_allmultis++; + atomic_inc(&local->iff_allmultis); else - local->iff_allmultis--; + atomic_dec(&local->iff_allmultis); sdata->flags ^= IEEE80211_SDATA_ALLMULTI; } if (promisc != sdata_promisc) { if (dev->flags & IFF_PROMISC) - local->iff_promiscs++; + atomic_inc(&local->iff_promiscs); else - local->iff_promiscs--; + atomic_dec(&local->iff_promiscs); sdata->flags ^= IEEE80211_SDATA_PROMISC; } @@ -540,18 +423,16 @@ static const struct header_ops ieee80211_header_ops = { .cache_update = eth_header_cache_update, }; -/* Must not be called for mdev and apdev */ +/* Must not be called for mdev */ void ieee80211_if_setup(struct net_device *dev) { ether_setup(dev); - dev->header_ops = &ieee80211_header_ops; dev->hard_start_xmit = ieee80211_subif_start_xmit; dev->wireless_handlers = &ieee80211_iw_handler_def; dev->set_multicast_list = ieee80211_set_multicast_list; dev->change_mtu = ieee80211_change_mtu; dev->open = ieee80211_open; dev->stop = ieee80211_stop; - dev->uninit = ieee80211_if_reinit; dev->destructor = ieee80211_if_free; } @@ -610,13 +491,9 @@ static int __ieee80211_if_config(struct net_device *dev, conf.bssid = sdata->u.sta.bssid; conf.ssid = sdata->u.sta.ssid; conf.ssid_len = sdata->u.sta.ssid_len; - conf.generic_elem = sdata->u.sta.extra_ie; - conf.generic_elem_len = sdata->u.sta.extra_ie_len; } else if (sdata->type == IEEE80211_IF_TYPE_AP) { conf.ssid = sdata->u.ap.ssid; conf.ssid_len = sdata->u.ap.ssid_len; - conf.generic_elem = sdata->u.ap.generic_elem; - conf.generic_elem_len = sdata->u.ap.generic_elem_len; conf.beacon = beacon; conf.beacon_control = control; } @@ -677,7 +554,7 @@ int ieee80211_hw_config(struct ieee80211_local *local) local->hw.conf.phymode); #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ - if (local->ops->config) + if (local->open_count) ret = local->ops->config(local_to_hw(local), &local->hw.conf); return ret; @@ -801,8 +678,6 @@ static void ieee80211_remove_tx_extra(struct ieee80211_local *local, pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; if (control->flags & IEEE80211_TXCTL_REQUEUE) pkt_data->flags |= IEEE80211_TXPD_REQUEUE; - if (control->type == IEEE80211_IF_TYPE_MGMT) - pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE; pkt_data->queue = control->queue; hdrlen = ieee80211_get_hdrlen_from_skb(skb); @@ -855,7 +730,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct ieee80211_local *local = hw_to_local(hw); u16 frag, type; - u32 msg_type; struct ieee80211_tx_status_rtap_hdr *rthdr; struct ieee80211_sub_if_data *sdata; int monitors; @@ -970,29 +844,9 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, local->dot11FailedCount++; } - msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ? - ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail; - /* this was a transmitted frame, but now we want to reuse it */ skb_orphan(skb); - if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) && - local->apdev) { - if (local->monitors) { - skb2 = skb_clone(skb, GFP_ATOMIC); - } else { - skb2 = skb; - skb = NULL; - } - - if (skb2) - /* Send frame to hostapd */ - ieee80211_rx_mgmt(local, skb2, NULL, msg_type); - - if (!skb) - return; - } - if (!local->monitors) { dev_kfree_skb(skb); return; @@ -1242,8 +1096,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) goto fail_dev; ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); + ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); - result = ieee80211_init_rate_ctrl_alg(local, NULL); + result = ieee80211_init_rate_ctrl_alg(local, + hw->rate_control_algorithm); if (result < 0) { printk(KERN_DEBUG "%s: Failed to initialize rate control " "algorithm\n", wiphy_name(local->hw.wiphy)); @@ -1338,16 +1194,28 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw) BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); local->reg_state = IEEE80211_DEV_UNREGISTERED; - if (local->apdev) - ieee80211_if_del_mgmt(local); /* * At this point, interface list manipulations are fine * because the driver cannot be handing us frames any * more and the tasklet is killed. */ - list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) + + /* + * First, we remove all non-master interfaces. Do this because they + * may have bss pointer dependency on the master, and when we free + * the master these would be freed as well, breaking our list + * iteration completely. + */ + list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { + if (sdata->dev == local->mdev) + continue; + list_del(&sdata->list); __ieee80211_if_del(local, sdata); + } + + /* then, finally, remove the master interface */ + __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); rtnl_unlock(); @@ -1392,8 +1260,17 @@ static int __init ieee80211_init(void) BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); +#ifdef CONFIG_MAC80211_RCSIMPLE + ret = ieee80211_rate_control_register(&mac80211_rcsimple); + if (ret) + return ret; +#endif + ret = ieee80211_wme_register(); if (ret) { +#ifdef CONFIG_MAC80211_RCSIMPLE + ieee80211_rate_control_unregister(&mac80211_rcsimple); +#endif printk(KERN_DEBUG "ieee80211_init: failed to " "initialize WME (err=%d)\n", ret); return ret; @@ -1407,6 +1284,10 @@ static int __init ieee80211_init(void) static void __exit ieee80211_exit(void) { +#ifdef CONFIG_MAC80211_RCSIMPLE + ieee80211_rate_control_unregister(&mac80211_rcsimple); +#endif + ieee80211_wme_unregister(); ieee80211_debugfs_netdev_exit(); }