diff options
Diffstat (limited to 'drivers/net/wireless/rndis_wlan.c')
-rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 205 |
1 files changed, 115 insertions, 90 deletions
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 18c9931e3267..00e965b9da75 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -310,8 +310,11 @@ enum wpa_key_mgmt { KEY_MGMT_802_1X, KEY_MGMT_PSK, KEY_MGMT_NONE, #define CAP_MODE_MASK 7 #define CAP_SUPPORT_TXPOWER 8 -#define WORK_CONNECTION_EVENT (1<<0) -#define WORK_SET_MULTICAST_LIST (1<<1) +#define WORK_LINK_UP (1<<0) +#define WORK_LINK_DOWN (1<<1) +#define WORK_SET_MULTICAST_LIST (1<<2) + +#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set)) /* RNDIS device private data */ struct rndis_wext_private { @@ -361,6 +364,8 @@ struct rndis_wext_private { u8 *wpa_ie; int wpa_cipher_pair; int wpa_cipher_group; + + u8 command_buffer[COMMAND_BUFFER_SIZE]; }; @@ -427,18 +432,23 @@ static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len) buflen = *len + sizeof(*u.get); if (buflen < CONTROL_BUFFER_SIZE) buflen = CONTROL_BUFFER_SIZE; - u.buf = kmalloc(buflen, GFP_KERNEL); - if (!u.buf) - return -ENOMEM; + + if (buflen > COMMAND_BUFFER_SIZE) { + u.buf = kmalloc(buflen, GFP_KERNEL); + if (!u.buf) + return -ENOMEM; + } else { + u.buf = priv->command_buffer; + } + + mutex_lock(&priv->command_lock); + memset(u.get, 0, sizeof *u.get); u.get->msg_type = RNDIS_MSG_QUERY; u.get->msg_len = ccpu2(sizeof *u.get); u.get->oid = oid; - mutex_lock(&priv->command_lock); - ret = rndis_command(dev, u.header); - mutex_unlock(&priv->command_lock); - + ret = rndis_command(dev, u.header, buflen); if (ret == 0) { ret = le32_to_cpu(u.get_c->len); *len = (*len > ret) ? ret : *len; @@ -446,7 +456,10 @@ static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len) ret = rndis_error_status(u.get_c->status); } - kfree(u.buf); + mutex_unlock(&priv->command_lock); + + if (u.buf != priv->command_buffer) + kfree(u.buf); return ret; } @@ -465,9 +478,16 @@ static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len) buflen = len + sizeof(*u.set); if (buflen < CONTROL_BUFFER_SIZE) buflen = CONTROL_BUFFER_SIZE; - u.buf = kmalloc(buflen, GFP_KERNEL); - if (!u.buf) - return -ENOMEM; + + if (buflen > COMMAND_BUFFER_SIZE) { + u.buf = kmalloc(buflen, GFP_KERNEL); + if (!u.buf) + return -ENOMEM; + } else { + u.buf = priv->command_buffer; + } + + mutex_lock(&priv->command_lock); memset(u.set, 0, sizeof *u.set); u.set->msg_type = RNDIS_MSG_SET; @@ -478,14 +498,14 @@ static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len) u.set->handle = ccpu2(0); memcpy(u.buf + sizeof(*u.set), data, len); - mutex_lock(&priv->command_lock); - ret = rndis_command(dev, u.header); - mutex_unlock(&priv->command_lock); - + ret = rndis_command(dev, u.header, buflen); if (ret == 0) ret = rndis_error_status(u.set_c->status); - kfree(u.buf); + mutex_unlock(&priv->command_lock); + + if (u.buf != priv->command_buffer) + kfree(u.buf); return ret; } @@ -620,8 +640,7 @@ static void dsconfig_to_freq(unsigned int dsconfig, struct iw_freq *freq) static int freq_to_dsconfig(struct iw_freq *freq, unsigned int *dsconfig) { if (freq->m < 1000 && freq->e == 0) { - if (freq->m >= 1 && - freq->m <= (sizeof(freq_chan) / sizeof(freq_chan[0]))) + if (freq->m >= 1 && freq->m <= ARRAY_SIZE(freq_chan)) *dsconfig = freq_chan[freq->m - 1] * 1000; else return -1; @@ -1135,7 +1154,7 @@ static int rndis_iw_get_range(struct net_device *dev, /* fill in 802.11g rates */ if (has_80211g_rates) { num = range->num_bitrates; - for (i = 0; i < sizeof(rates_80211g); i++) { + for (i = 0; i < ARRAY_SIZE(rates_80211g); i++) { for (j = 0; j < num; j++) { if (range->bitrate[j] == rates_80211g[i] * 1000000) @@ -1159,10 +1178,9 @@ static int rndis_iw_get_range(struct net_device *dev, range->throughput = 11 * 1000 * 1000 / 2; } - range->num_channels = (sizeof(freq_chan)/sizeof(freq_chan[0])); + range->num_channels = ARRAY_SIZE(freq_chan); - for (i = 0; i < (sizeof(freq_chan)/sizeof(freq_chan[0])) && - i < IW_MAX_FREQUENCIES; i++) { + for (i = 0; i < ARRAY_SIZE(freq_chan) && i < IW_MAX_FREQUENCIES; i++) { range->freq[i].i = i + 1; range->freq[i].m = freq_chan[i] * 100000; range->freq[i].e = 1; @@ -1630,7 +1648,9 @@ static int rndis_iw_set_scan(struct net_device *dev, static char *rndis_translate_scan(struct net_device *dev, - char *cev, char *end_buf, struct ndis_80211_bssid_ex *bssid) + struct iw_request_info *info, char *cev, + char *end_buf, + struct ndis_80211_bssid_ex *bssid) { #ifdef DEBUG struct usbnet *usbdev = dev->priv; @@ -1649,14 +1669,14 @@ static char *rndis_translate_scan(struct net_device *dev, iwe.cmd = SIOCGIWAP; iwe.u.ap_addr.sa_family = ARPHRD_ETHER; memcpy(iwe.u.ap_addr.sa_data, bssid->mac, ETH_ALEN); - cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN); + cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_ADDR_LEN); devdbg(usbdev, "SSID(%d) %s", le32_to_cpu(bssid->ssid.length), bssid->ssid.essid); iwe.cmd = SIOCGIWESSID; iwe.u.essid.length = le32_to_cpu(bssid->ssid.length); iwe.u.essid.flags = 1; - cev = iwe_stream_add_point(cev, end_buf, &iwe, bssid->ssid.essid); + cev = iwe_stream_add_point(info, cev, end_buf, &iwe, bssid->ssid.essid); devdbg(usbdev, "MODE %d", le32_to_cpu(bssid->net_infra)); iwe.cmd = SIOCGIWMODE; @@ -1672,12 +1692,12 @@ static char *rndis_translate_scan(struct net_device *dev, iwe.u.mode = IW_MODE_AUTO; break; } - cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN); + cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_UINT_LEN); devdbg(usbdev, "FREQ %d kHz", le32_to_cpu(bssid->config.ds_config)); iwe.cmd = SIOCGIWFREQ; dsconfig_to_freq(le32_to_cpu(bssid->config.ds_config), &iwe.u.freq); - cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN); + cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_FREQ_LEN); devdbg(usbdev, "QUAL %d", le32_to_cpu(bssid->rssi)); iwe.cmd = IWEVQUAL; @@ -1686,7 +1706,7 @@ static char *rndis_translate_scan(struct net_device *dev, iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED | IW_QUAL_NOISE_INVALID; - cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN); + cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_QUAL_LEN); devdbg(usbdev, "ENCODE %d", le32_to_cpu(bssid->privacy)); iwe.cmd = SIOCGIWENCODE; @@ -1696,10 +1716,10 @@ static char *rndis_translate_scan(struct net_device *dev, else iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; - cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL); + cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL); devdbg(usbdev, "RATES:"); - current_val = cev + IW_EV_LCP_LEN; + current_val = cev + iwe_stream_lcp_len(info); iwe.cmd = SIOCGIWRATE; for (i = 0; i < sizeof(bssid->rates); i++) { if (bssid->rates[i] & 0x7f) { @@ -1707,13 +1727,13 @@ static char *rndis_translate_scan(struct net_device *dev, ((bssid->rates[i] & 0x7f) * 500000); devdbg(usbdev, " %d", iwe.u.bitrate.value); - current_val = iwe_stream_add_value(cev, + current_val = iwe_stream_add_value(info, cev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN); } } - if ((current_val - cev) > IW_EV_LCP_LEN) + if ((current_val - cev) > iwe_stream_lcp_len(info)) cev = current_val; beacon = le32_to_cpu(bssid->config.beacon_period); @@ -1721,14 +1741,14 @@ static char *rndis_translate_scan(struct net_device *dev, iwe.cmd = IWEVCUSTOM; snprintf(sbuf, sizeof(sbuf), "bcn_int=%d", beacon); iwe.u.data.length = strlen(sbuf); - cev = iwe_stream_add_point(cev, end_buf, &iwe, sbuf); + cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf); atim = le32_to_cpu(bssid->config.atim_window); devdbg(usbdev, "ATIM %d", atim); iwe.cmd = IWEVCUSTOM; snprintf(sbuf, sizeof(sbuf), "atim=%u", atim); iwe.u.data.length = strlen(sbuf); - cev = iwe_stream_add_point(cev, end_buf, &iwe, sbuf); + cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf); ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies)); ie_len = min(bssid_len - (int)sizeof(*bssid), @@ -1742,7 +1762,7 @@ static char *rndis_translate_scan(struct net_device *dev, (ie->id == MFIE_TYPE_RSN) ? 2 : 1); iwe.cmd = IWEVGENIE; iwe.u.data.length = min(ie->len + 2, MAX_WPA_IE_LEN); - cev = iwe_stream_add_point(cev, end_buf, &iwe, + cev = iwe_stream_add_point(info, cev, end_buf, &iwe, (u8 *)ie); } @@ -1785,8 +1805,8 @@ static int rndis_iw_get_scan(struct net_device *dev, devdbg(usbdev, "SIOCGIWSCAN: %d BSSIDs found", count); while (count && ((void *)bssid + bssid_len) <= (buf + len)) { - cev = rndis_translate_scan(dev, cev, extra + IW_SCAN_MAX_DATA, - bssid); + cev = rndis_translate_scan(dev, info, cev, + extra + IW_SCAN_MAX_DATA, bssid); bssid = (void *)bssid + bssid_len; bssid_len = le32_to_cpu(bssid->length); count--; @@ -2213,7 +2233,9 @@ static void rndis_wext_worker(struct work_struct *work) int assoc_size = sizeof(*info) + IW_CUSTOM_MAX + 32; int ret, offset; - if (test_and_clear_bit(WORK_CONNECTION_EVENT, &priv->work_pending)) { + if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) { + netif_carrier_on(usbdev->net); + info = kzalloc(assoc_size, GFP_KERNEL); if (!info) goto get_bssid; @@ -2251,6 +2273,15 @@ get_bssid: } } + if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) { + netif_carrier_off(usbdev->net); + + evt.data.flags = 0; + evt.data.length = 0; + memset(evt.ap_addr.sa_data, 0, ETH_ALEN); + wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL); + } + if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending)) set_multicast_list(usbdev); } @@ -2260,29 +2291,24 @@ static void rndis_wext_set_multicast_list(struct net_device *dev) struct usbnet *usbdev = dev->priv; struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); + if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending)) + return; + set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending); queue_work(priv->workqueue, &priv->work); } -static void rndis_wext_link_change(struct usbnet *dev, int state) +static void rndis_wext_link_change(struct usbnet *usbdev, int state) { - struct rndis_wext_private *priv = get_rndis_wext_priv(dev); - union iwreq_data evt; + struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); - if (state) { - /* queue work to avoid recursive calls into rndis_command */ - set_bit(WORK_CONNECTION_EVENT, &priv->work_pending); - queue_work(priv->workqueue, &priv->work); - } else { - evt.data.flags = 0; - evt.data.length = 0; - memset(evt.ap_addr.sa_data, 0, ETH_ALEN); - wireless_send_event(dev->net, SIOCGIWAP, &evt, NULL); - } + /* queue work to avoid recursive calls into rndis_command */ + set_bit(state ? WORK_LINK_UP : WORK_LINK_DOWN, &priv->work_pending); + queue_work(priv->workqueue, &priv->work); } -static int rndis_wext_get_caps(struct usbnet *dev) +static int rndis_wext_get_caps(struct usbnet *usbdev) { struct { __le32 num_items; @@ -2290,18 +2316,18 @@ static int rndis_wext_get_caps(struct usbnet *dev) } networks_supported; int len, retval, i, n; __le32 tx_power; - struct rndis_wext_private *priv = get_rndis_wext_priv(dev); + struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); /* determine if supports setting txpower */ len = sizeof(tx_power); - retval = rndis_query_oid(dev, OID_802_11_TX_POWER_LEVEL, &tx_power, - &len); + retval = rndis_query_oid(usbdev, OID_802_11_TX_POWER_LEVEL, &tx_power, + &len); if (retval == 0 && le32_to_cpu(tx_power) != 0xFF) priv->caps |= CAP_SUPPORT_TXPOWER; /* determine supported modes */ len = sizeof(networks_supported); - retval = rndis_query_oid(dev, OID_802_11_NETWORK_TYPES_SUPPORTED, + retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED, &networks_supported, &len); if (retval >= 0) { n = le32_to_cpu(networks_supported.num_items); @@ -2440,9 +2466,9 @@ end: } -static int bcm4320_early_init(struct usbnet *dev) +static int bcm4320_early_init(struct usbnet *usbdev) { - struct rndis_wext_private *priv = get_rndis_wext_priv(dev); + struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); char buf[8]; /* Early initialization settings, setting these won't have effect @@ -2490,51 +2516,48 @@ static int bcm4320_early_init(struct usbnet *dev) else priv->param_workaround_interval = modparam_workaround_interval; - rndis_set_config_parameter_str(dev, "Country", priv->param_country); - rndis_set_config_parameter_str(dev, "FrameBursting", + rndis_set_config_parameter_str(usbdev, "Country", priv->param_country); + rndis_set_config_parameter_str(usbdev, "FrameBursting", priv->param_frameburst ? "1" : "0"); - rndis_set_config_parameter_str(dev, "Afterburner", + rndis_set_config_parameter_str(usbdev, "Afterburner", priv->param_afterburner ? "1" : "0"); sprintf(buf, "%d", priv->param_power_save); - rndis_set_config_parameter_str(dev, "PowerSaveMode", buf); + rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf); sprintf(buf, "%d", priv->param_power_output); - rndis_set_config_parameter_str(dev, "PwrOut", buf); + rndis_set_config_parameter_str(usbdev, "PwrOut", buf); sprintf(buf, "%d", priv->param_roamtrigger); - rndis_set_config_parameter_str(dev, "RoamTrigger", buf); + rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf); sprintf(buf, "%d", priv->param_roamdelta); - rndis_set_config_parameter_str(dev, "RoamDelta", buf); + rndis_set_config_parameter_str(usbdev, "RoamDelta", buf); return 0; } -static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf) +static int rndis_wext_bind(struct usbnet *usbdev, struct usb_interface *intf) { - struct net_device *net = dev->net; struct rndis_wext_private *priv; int retval, len; __le32 tmp; /* allocate rndis private data */ - priv = kmalloc(sizeof(struct rndis_wext_private), GFP_KERNEL); + priv = kzalloc(sizeof(struct rndis_wext_private), GFP_KERNEL); if (!priv) return -ENOMEM; /* These have to be initialized before calling generic_rndis_bind(). * Otherwise we'll be in big trouble in rndis_wext_early_init(). */ - dev->driver_priv = priv; - memset(priv, 0, sizeof(*priv)); - memset(priv->name, 0, sizeof(priv->name)); + usbdev->driver_priv = priv; strcpy(priv->name, "IEEE802.11"); - net->wireless_handlers = &rndis_iw_handlers; - priv->usbdev = dev; + usbdev->net->wireless_handlers = &rndis_iw_handlers; + priv->usbdev = usbdev; mutex_init(&priv->command_lock); spin_lock_init(&priv->stats_lock); /* try bind rndis_host */ - retval = generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_WIRELESS); + retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS); if (retval < 0) goto fail; @@ -2545,20 +2568,21 @@ static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf) * rndis_host wants to avoid all OID as much as possible * so do promisc/multicast handling in rndis_wext. */ - dev->net->set_multicast_list = rndis_wext_set_multicast_list; + usbdev->net->set_multicast_list = rndis_wext_set_multicast_list; tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST; - retval = rndis_set_oid(dev, OID_GEN_CURRENT_PACKET_FILTER, &tmp, + retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp, sizeof(tmp)); len = sizeof(tmp); - retval = rndis_query_oid(dev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp, &len); + retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp, + &len); priv->multicast_size = le32_to_cpu(tmp); if (retval < 0 || priv->multicast_size < 0) priv->multicast_size = 0; if (priv->multicast_size > 0) - dev->net->flags |= IFF_MULTICAST; + usbdev->net->flags |= IFF_MULTICAST; else - dev->net->flags &= ~IFF_MULTICAST; + usbdev->net->flags &= ~IFF_MULTICAST; priv->iwstats.qual.qual = 0; priv->iwstats.qual.level = 0; @@ -2568,12 +2592,13 @@ static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf) | IW_QUAL_QUAL_INVALID | IW_QUAL_LEVEL_INVALID; - rndis_wext_get_caps(dev); - set_default_iw_params(dev); + rndis_wext_get_caps(usbdev); + set_default_iw_params(usbdev); /* turn radio on */ priv->radio_on = 1; - disassociate(dev, 1); + disassociate(usbdev, 1); + netif_carrier_off(usbdev->net); /* because rndis_command() sleeps we need to use workqueue */ priv->workqueue = create_singlethread_workqueue("rndis_wlan"); @@ -2590,12 +2615,12 @@ fail: } -static void rndis_wext_unbind(struct usbnet *dev, struct usb_interface *intf) +static void rndis_wext_unbind(struct usbnet *usbdev, struct usb_interface *intf) { - struct rndis_wext_private *priv = get_rndis_wext_priv(dev); + struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev); /* turn radio off */ - disassociate(dev, 0); + disassociate(usbdev, 0); cancel_delayed_work_sync(&priv->stats_work); cancel_work_sync(&priv->work); @@ -2606,13 +2631,13 @@ static void rndis_wext_unbind(struct usbnet *dev, struct usb_interface *intf) kfree(priv->wpa_ie); kfree(priv); - rndis_unbind(dev, intf); + rndis_unbind(usbdev, intf); } -static int rndis_wext_reset(struct usbnet *dev) +static int rndis_wext_reset(struct usbnet *usbdev) { - return deauthenticate(dev); + return deauthenticate(usbdev); } |