diff options
Diffstat (limited to 'drivers/net/wireless/ipw2100.c')
-rw-r--r-- | drivers/net/wireless/ipw2100.c | 220 |
1 files changed, 147 insertions, 73 deletions
diff --git a/drivers/net/wireless/ipw2100.c b/drivers/net/wireless/ipw2100.c index eb79198ac45..72335c8eb97 100644 --- a/drivers/net/wireless/ipw2100.c +++ b/drivers/net/wireless/ipw2100.c @@ -1,6 +1,6 @@ /****************************************************************************** - Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved. + Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as @@ -167,12 +167,12 @@ that only one external action is invoked at a time. #include "ipw2100.h" -#define IPW2100_VERSION "git-1.1.4" +#define IPW2100_VERSION "git-1.2.2" #define DRV_NAME "ipw2100" #define DRV_VERSION IPW2100_VERSION #define DRV_DESCRIPTION "Intel(R) PRO/Wireless 2100 Network Driver" -#define DRV_COPYRIGHT "Copyright(c) 2003-2005 Intel Corporation" +#define DRV_COPYRIGHT "Copyright(c) 2003-2006 Intel Corporation" /* Debugging stuff */ #ifdef CONFIG_IPW2100_DEBUG @@ -1418,7 +1418,7 @@ static int ipw2100_enable_adapter(struct ipw2100_priv *priv) if (priv->status & STATUS_ENABLED) return 0; - down(&priv->adapter_sem); + mutex_lock(&priv->adapter_mutex); if (rf_kill_active(priv)) { IPW_DEBUG_HC("Command aborted due to RF kill active.\n"); @@ -1444,7 +1444,7 @@ static int ipw2100_enable_adapter(struct ipw2100_priv *priv) } fail_up: - up(&priv->adapter_sem); + mutex_unlock(&priv->adapter_mutex); return err; } @@ -1576,7 +1576,7 @@ static int ipw2100_disable_adapter(struct ipw2100_priv *priv) cancel_delayed_work(&priv->hang_check); } - down(&priv->adapter_sem); + mutex_lock(&priv->adapter_mutex); err = ipw2100_hw_send_command(priv, &cmd); if (err) { @@ -1595,7 +1595,7 @@ static int ipw2100_disable_adapter(struct ipw2100_priv *priv) IPW_DEBUG_INFO("TODO: implement scan state machine\n"); fail_up: - up(&priv->adapter_sem); + mutex_unlock(&priv->adapter_mutex); return err; } @@ -1888,7 +1888,7 @@ static void ipw2100_reset_adapter(struct ipw2100_priv *priv) priv->status |= STATUS_RESET_PENDING; spin_unlock_irqrestore(&priv->low_lock, flags); - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); /* stop timed checks so that they don't interfere with reset */ priv->stop_hang_check = 1; cancel_delayed_work(&priv->hang_check); @@ -1898,7 +1898,7 @@ static void ipw2100_reset_adapter(struct ipw2100_priv *priv) wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL); ipw2100_up(priv, 0); - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); } @@ -2390,15 +2390,6 @@ static void isr_rx(struct ipw2100_priv *priv, int i, IPW_DEBUG_DROP("Dropping packet while interface is not up.\n"); return; } -#ifdef CONFIG_IPW2100_MONITOR - if (unlikely(priv->ieee->iw_mode == IW_MODE_MONITOR && - priv->config & CFG_CRC_CHECK && - status->flags & IPW_STATUS_FLAG_CRC_ERROR)) { - IPW_DEBUG_RX("CRC error in packet. Dropping.\n"); - priv->ieee->stats.rx_errors++; - return; - } -#endif if (unlikely(priv->ieee->iw_mode != IW_MODE_MONITOR && !(priv->status & STATUS_ASSOCIATED))) { @@ -2446,6 +2437,89 @@ static void isr_rx(struct ipw2100_priv *priv, int i, priv->rx_queue.drv[i].host_addr = packet->dma_addr; } +#ifdef CONFIG_IPW2100_MONITOR + +static void isr_rx_monitor(struct ipw2100_priv *priv, int i, + struct ieee80211_rx_stats *stats) +{ + struct ipw2100_status *status = &priv->status_queue.drv[i]; + struct ipw2100_rx_packet *packet = &priv->rx_buffers[i]; + + /* Magic struct that slots into the radiotap header -- no reason + * to build this manually element by element, we can write it much + * more efficiently than we can parse it. ORDER MATTERS HERE */ + struct ipw_rt_hdr { + struct ieee80211_radiotap_header rt_hdr; + s8 rt_dbmsignal; /* signal in dbM, kluged to signed */ + } *ipw_rt; + + IPW_DEBUG_RX("Handler...\n"); + + if (unlikely(status->frame_size > skb_tailroom(packet->skb) - + sizeof(struct ipw_rt_hdr))) { + IPW_DEBUG_INFO("%s: frame_size (%u) > skb_tailroom (%u)!" + " Dropping.\n", + priv->net_dev->name, + status->frame_size, + skb_tailroom(packet->skb)); + priv->ieee->stats.rx_errors++; + return; + } + + if (unlikely(!netif_running(priv->net_dev))) { + priv->ieee->stats.rx_errors++; + priv->wstats.discard.misc++; + IPW_DEBUG_DROP("Dropping packet while interface is not up.\n"); + return; + } + + if (unlikely(priv->config & CFG_CRC_CHECK && + status->flags & IPW_STATUS_FLAG_CRC_ERROR)) { + IPW_DEBUG_RX("CRC error in packet. Dropping.\n"); + priv->ieee->stats.rx_errors++; + return; + } + + pci_unmap_single(priv->pci_dev, packet->dma_addr, + sizeof(struct ipw2100_rx), PCI_DMA_FROMDEVICE); + memmove(packet->skb->data + sizeof(struct ipw_rt_hdr), + packet->skb->data, status->frame_size); + + ipw_rt = (struct ipw_rt_hdr *) packet->skb->data; + + ipw_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; + ipw_rt->rt_hdr.it_pad = 0; /* always good to zero */ + ipw_rt->rt_hdr.it_len = sizeof(struct ipw_rt_hdr); /* total hdr+data */ + + ipw_rt->rt_hdr.it_present = 1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL; + + ipw_rt->rt_dbmsignal = status->rssi + IPW2100_RSSI_TO_DBM; + + skb_put(packet->skb, status->frame_size + sizeof(struct ipw_rt_hdr)); + + if (!ieee80211_rx(priv->ieee, packet->skb, stats)) { + priv->ieee->stats.rx_errors++; + + /* ieee80211_rx failed, so it didn't free the SKB */ + dev_kfree_skb_any(packet->skb); + packet->skb = NULL; + } + + /* We need to allocate a new SKB and attach it to the RDB. */ + if (unlikely(ipw2100_alloc_skb(priv, packet))) { + IPW_DEBUG_WARNING( + "%s: Unable to allocate SKB onto RBD ring - disabling " + "adapter.\n", priv->net_dev->name); + /* TODO: schedule adapter shutdown */ + IPW_DEBUG_INFO("TODO: Shutdown adapter...\n"); + } + + /* Update the RDB entry */ + priv->rx_queue.drv[i].host_addr = packet->dma_addr; +} + +#endif + static int ipw2100_corruption_check(struct ipw2100_priv *priv, int i) { struct ipw2100_status *status = &priv->status_queue.drv[i]; @@ -2577,7 +2651,7 @@ static void __ipw2100_rx_process(struct ipw2100_priv *priv) case P8023_DATA_VAL: #ifdef CONFIG_IPW2100_MONITOR if (priv->ieee->iw_mode == IW_MODE_MONITOR) { - isr_rx(priv, i, &stats); + isr_rx_monitor(priv, i, &stats); break; } #endif @@ -3882,7 +3956,7 @@ static int ipw2100_switch_mode(struct ipw2100_priv *priv, u32 mode) #ifdef CONFIG_IPW2100_MONITOR case IW_MODE_MONITOR: priv->last_mode = priv->ieee->iw_mode; - priv->net_dev->type = ARPHRD_IEEE80211; + priv->net_dev->type = ARPHRD_IEEE80211_RADIOTAP; break; #endif /* CONFIG_IPW2100_MONITOR */ } @@ -4138,7 +4212,7 @@ static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio) IPW_DEBUG_RF_KILL("Manual SW RF Kill set to: RADIO %s\n", disable_radio ? "OFF" : "ON"); - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (disable_radio) { priv->status |= STATUS_RF_KILL_SW; @@ -4156,7 +4230,7 @@ static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio) schedule_reset(priv); } - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return 1; } @@ -5460,7 +5534,7 @@ static void shim__set_security(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int i, force_update = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) goto done; @@ -5533,7 +5607,7 @@ static void shim__set_security(struct net_device *dev, if (!(priv->status & (STATUS_ASSOCIATED | STATUS_ASSOCIATING))) ipw2100_configure_security(priv, 0); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); } static int ipw2100_adapter_setup(struct ipw2100_priv *priv) @@ -5657,7 +5731,7 @@ static int ipw2100_set_address(struct net_device *dev, void *p) if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); priv->config |= CFG_CUSTOM_MAC; memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN); @@ -5667,12 +5741,12 @@ static int ipw2100_set_address(struct net_device *dev, void *p) goto done; priv->reset_backoff = 0; - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); ipw2100_reset_adapter(priv); return 0; done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -6015,8 +6089,8 @@ static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev, strcpy(priv->nick, "ipw2100"); spin_lock_init(&priv->low_lock); - sema_init(&priv->action_sem, 1); - sema_init(&priv->adapter_sem, 1); + mutex_init(&priv->action_mutex); + mutex_init(&priv->adapter_mutex); init_waitqueue_head(&priv->wait_command_queue); @@ -6181,7 +6255,7 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev, * member to call a function that then just turns and calls ipw2100_up. * net_dev->init is called after name allocation but before the * notifier chain is called */ - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); err = register_netdev(dev); if (err) { printk(KERN_WARNING DRV_NAME @@ -6217,12 +6291,12 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev, priv->status |= STATUS_INITIALIZED; - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return 0; fail_unlock: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); fail: if (dev) { @@ -6262,7 +6336,7 @@ static void __devexit ipw2100_pci_remove_one(struct pci_dev *pci_dev) struct net_device *dev; if (priv) { - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); priv->status &= ~STATUS_INITIALIZED; @@ -6277,9 +6351,9 @@ static void __devexit ipw2100_pci_remove_one(struct pci_dev *pci_dev) /* Take down the hardware */ ipw2100_down(priv); - /* Release the semaphore so that the network subsystem can + /* Release the mutex so that the network subsystem can * complete any needed calls into the driver... */ - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); /* Unregister the device first - this results in close() * being called if the device is open. If we free storage @@ -6318,7 +6392,7 @@ static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state) IPW_DEBUG_INFO("%s: Going into suspend...\n", dev->name); - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (priv->status & STATUS_INITIALIZED) { /* Take down the device; powers it off, etc. */ ipw2100_down(priv); @@ -6331,7 +6405,7 @@ static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state) pci_disable_device(pci_dev); pci_set_power_state(pci_dev, PCI_D3hot); - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return 0; } @@ -6345,7 +6419,7 @@ static int ipw2100_resume(struct pci_dev *pci_dev) if (IPW2100_PM_DISABLED) return 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); IPW_DEBUG_INFO("%s: Coming out of suspend...\n", dev->name); @@ -6371,7 +6445,7 @@ static int ipw2100_resume(struct pci_dev *pci_dev) if (!(priv->status & STATUS_RF_KILL_SW)) ipw2100_up(priv, 0); - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return 0; } @@ -6535,7 +6609,7 @@ static int ipw2100_wx_set_freq(struct net_device *dev, if (priv->ieee->iw_mode == IW_MODE_INFRA) return -EOPNOTSUPP; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -6566,7 +6640,7 @@ static int ipw2100_wx_set_freq(struct net_device *dev, } done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -6607,7 +6681,7 @@ static int ipw2100_wx_set_mode(struct net_device *dev, if (wrqu->mode == priv->ieee->iw_mode) return 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -6630,7 +6704,7 @@ static int ipw2100_wx_set_mode(struct net_device *dev, } done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -6812,7 +6886,7 @@ static int ipw2100_wx_set_wap(struct net_device *dev, if (wrqu->ap_addr.sa_family != ARPHRD_ETHER) return -EINVAL; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -6841,7 +6915,7 @@ static int ipw2100_wx_set_wap(struct net_device *dev, wrqu->ap_addr.sa_data[5] & 0xff); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -6877,7 +6951,7 @@ static int ipw2100_wx_set_essid(struct net_device *dev, int length = 0; int err = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -6914,7 +6988,7 @@ static int ipw2100_wx_set_essid(struct net_device *dev, err = ipw2100_set_essid(priv, essid, length, 0); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -6995,7 +7069,7 @@ static int ipw2100_wx_set_rate(struct net_device *dev, u32 rate; int err = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7022,7 +7096,7 @@ static int ipw2100_wx_set_rate(struct net_device *dev, IPW_DEBUG_WX("SET Rate -> %04X \n", rate); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7042,7 +7116,7 @@ static int ipw2100_wx_get_rate(struct net_device *dev, return 0; } - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7074,7 +7148,7 @@ static int ipw2100_wx_get_rate(struct net_device *dev, IPW_DEBUG_WX("GET Rate -> %d \n", wrqu->bitrate.value); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7089,7 +7163,7 @@ static int ipw2100_wx_set_rts(struct net_device *dev, if (wrqu->rts.fixed == 0) return -EINVAL; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7109,7 +7183,7 @@ static int ipw2100_wx_set_rts(struct net_device *dev, IPW_DEBUG_WX("SET RTS Threshold -> 0x%08X \n", value); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7160,7 +7234,7 @@ static int ipw2100_wx_set_txpow(struct net_device *dev, value = wrqu->txpower.value; } - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7171,7 +7245,7 @@ static int ipw2100_wx_set_txpow(struct net_device *dev, IPW_DEBUG_WX("SET TX Power -> %d \n", value); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7263,7 +7337,7 @@ static int ipw2100_wx_set_retry(struct net_device *dev, if (!(wrqu->retry.flags & IW_RETRY_LIMIT)) return 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7290,7 +7364,7 @@ static int ipw2100_wx_set_retry(struct net_device *dev, IPW_DEBUG_WX("SET Both Retry Limits -> %d \n", wrqu->retry.value); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7333,7 +7407,7 @@ static int ipw2100_wx_set_scan(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int err = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7348,7 +7422,7 @@ static int ipw2100_wx_set_scan(struct net_device *dev, } done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7398,7 +7472,7 @@ static int ipw2100_wx_set_power(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int err = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7431,7 +7505,7 @@ static int ipw2100_wx_set_power(struct net_device *dev, IPW_DEBUG_WX("SET Power Management Mode -> 0x%02X\n", priv->power_mode); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7735,7 +7809,7 @@ static int ipw2100_wx_set_promisc(struct net_device *dev, int enable = (parms[0] > 0); int err = 0; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7753,7 +7827,7 @@ static int ipw2100_wx_set_promisc(struct net_device *dev, err = ipw2100_switch_mode(priv, priv->last_mode); } done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7776,7 +7850,7 @@ static int ipw2100_wx_set_powermode(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int err = 0, mode = *(int *)extra; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7788,7 +7862,7 @@ static int ipw2100_wx_set_powermode(struct net_device *dev, if (priv->power_mode != mode) err = ipw2100_set_power_mode(priv, mode); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7840,7 +7914,7 @@ static int ipw2100_wx_set_preamble(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int err, mode = *(int *)extra; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7858,7 +7932,7 @@ static int ipw2100_wx_set_preamble(struct net_device *dev, err = ipw2100_system_config(priv, 0); done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -7888,7 +7962,7 @@ static int ipw2100_wx_set_crc_check(struct net_device *dev, struct ipw2100_priv *priv = ieee80211_priv(dev); int err, mode = *(int *)extra; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); if (!(priv->status & STATUS_INITIALIZED)) { err = -EIO; goto done; @@ -7905,7 +7979,7 @@ static int ipw2100_wx_set_crc_check(struct net_device *dev, err = 0; done: - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); return err; } @@ -8210,11 +8284,11 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv) if (priv->status & STATUS_STOPPING) return; - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); IPW_DEBUG_WX("enter\n"); - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); wrqu.ap_addr.sa_family = ARPHRD_ETHER; @@ -8237,7 +8311,7 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv) if (!(priv->status & STATUS_ASSOCIATED)) { IPW_DEBUG_WX("Configuring ESSID\n"); - down(&priv->action_sem); + mutex_lock(&priv->action_mutex); /* This is a disassociation event, so kick the firmware to * look for another AP */ if (priv->config & CFG_STATIC_ESSID) @@ -8245,7 +8319,7 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv) 0); else ipw2100_set_essid(priv, NULL, 0, 0); - up(&priv->action_sem); + mutex_unlock(&priv->action_mutex); } wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL); |