This patch adds basic scan capability to cfg80211/nl80211 and
changes mac80211 to use it. The BSS list that cfg80211 maintains
is made driver-accessible with a private area in each BSS struct,
but mac80211 doesn't yet use it. That's another large project.
The one thing that this needs is to handle quality/signal/noise
for the BSS. Any ideas on how to do it appreciated, after that
we could merge this patch and build on top of it, but so far that
is a regression.
TODO:
cfg80211:
* add BSS hashtable
* handle quality/signal/noise stuff
mac80211:
* use BSS stuff from cfg80211 (this is fairly involved)
a fullmac driver:
* port over to see if it works
---
drivers/net/wireless/at76_usb.c | 17
drivers/net/wireless/iwlwifi/iwl-agn.c | 12
drivers/net/wireless/iwlwifi/iwl-core.c | 1
drivers/net/wireless/iwlwifi/iwl3945-base.c | 17
include/linux/ieee80211.h | 1
include/linux/nl80211.h | 37 +
include/net/cfg80211.h | 117 ++++
include/net/mac80211.h | 3
include/net/wireless.h | 3
net/mac80211/cfg.c | 24
net/mac80211/ieee80211_i.h | 19
net/mac80211/main.c | 31 +
net/mac80211/mesh.c | 2
net/mac80211/mesh.h | 3
net/mac80211/mlme.c | 37 +
net/mac80211/scan.c | 343 +------------
net/mac80211/wext.c | 57 --
net/wireless/Makefile | 2
net/wireless/core.c | 8
net/wireless/core.h | 17
net/wireless/nl80211.c | 291 +++++++++++
net/wireless/nl80211.h | 6
net/wireless/scan.c | 720 ++++++++++++++++++++++++++++
23 files changed, 1381 insertions(+), 387 deletions(-)
--- everything.orig/include/linux/nl80211.h 2008-09-19 05:09:30.000000000 +0200
+++ everything/include/linux/nl80211.h 2008-09-23 13:46:43.000000000 +0200
@@ -106,6 +106,11 @@
* to the the specified ISO/IEC 3166-1 alpha2 country code. The core will
* store this as a valid request and then query userspace for it.
*
+ * @NL80211_CMD_GET_SCAN: get scan results
+ * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters
+ * @NL80211_CMD_NEW_SCAN: scan notification (as a reply to NL80211_CMD_GET_SCAN
+ * and on the "scan" multicast group)
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -148,6 +153,10 @@ enum nl80211_commands {
NL80211_CMD_SET_REG,
NL80211_CMD_REQ_SET_REG,
+ NL80211_CMD_GET_SCAN,
+ NL80211_CMD_TRIGGER_SCAN,
+ NL80211_CMD_NEW_SCAN,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -242,6 +251,13 @@ enum nl80211_commands {
* supported interface types, each a flag attribute with the number
* of the interface mode.
*
+ * @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with
+ * a single scan request, a wiphy attribute.
+ *
+ * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies
+ * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs
+ * @NL80211_ATTR_BSS: scan result BSS
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -296,6 +312,13 @@ enum nl80211_attrs {
NL80211_ATTR_REG_ALPHA2,
NL80211_ATTR_REG_RULES,
+ NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
+
+ NL80211_ATTR_SCAN_FREQUENCIES,
+ NL80211_ATTR_SCAN_SSIDS,
+ NL80211_ATTR_SCAN_GENERATION,
+ NL80211_ATTR_BSS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -594,4 +617,18 @@ enum nl80211_mntr_flags {
NL80211_MNTR_FLAG_MAX = __NL80211_MNTR_FLAG_AFTER_LAST - 1
};
+enum nl80211_bss {
+ __NL80211_BSS_INVALID,
+ NL80211_BSS_BSSID,
+ NL80211_BSS_FREQUENCY,
+ NL80211_BSS_TSF,
+ NL80211_BSS_BEACON_INTERVAL,
+ NL80211_BSS_CAPABILITY,
+ NL80211_BSS_INFORMATION_ELEMENTS,
+
+ /* keep last */
+ __NL80211_BSS_AFTER_LAST,
+ NL80211_BSS_MAX = __NL80211_BSS_AFTER_LAST - 1
+};
+
#endif /* __LINUX_NL80211_H */
--- everything.orig/include/net/cfg80211.h 2008-09-19 05:09:30.000000000 +0200
+++ everything/include/net/cfg80211.h 2008-09-23 14:08:55.000000000 +0200
@@ -4,6 +4,10 @@
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
+#include <linux/if_ether.h>
+#include <linux/ieee80211.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
#include <net/genetlink.h>
/*
@@ -351,6 +355,67 @@ struct ieee80211_regdomain {
struct wiphy;
/**
+ * struct cfg80211_ssid - SSID description
+ * @ssid: the SSID
+ * @ssid_len: length of the ssid
+ */
+struct cfg80211_ssid {
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 ssid_len;
+};
+
+/**
+ * struct cfg80211_scan_request - scan request description
+ *
+ * @ssids: SSIDs to scan for (active scan only)
+ * @n_ssids: number of SSIDs
+ * @channels: channels to scan on.
+ * @n_channels: number of channels for each band
+ * @wiphy: the wiphy this was for
+ * @ifidx: the interface index
+ */
+struct cfg80211_scan_request {
+ struct cfg80211_ssid *ssids;
+ int n_ssids;
+ struct ieee80211_channel **channels;
+ u32 n_channels;
+
+ /* internal */
+ struct wiphy *wiphy;
+ int ifidx;
+};
+
+/**
+ * struct cfg80211_bss - BSS description
+ *
+ * This structure describes a BSS (which may also be a mesh network)
+ * for use in scan results and similar.
+ *
+ * @bssid: BSSID of the BSS
+ * @tsf: timestamp of last received update
+ * @beacon_interval: the beacon interval as from the frame
+ * @capability: the capability field in host byte order
+ * @information_elements: the information elements (Note that there
+ * is no guarantee that these are well-formed!)
+ * @len_information_elements: total length of the information elements
+ * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
+ */
+struct cfg80211_bss {
+ struct ieee80211_channel *channel;
+
+ /* XXX: add flags which members are valid? */
+
+ u8 bssid[ETH_ALEN];
+ u64 tsf;
+ u16 beacon_interval;
+ u16 capability;
+ u8 *information_elements;
+ size_t len_information_elements;
+
+ u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
+};
+
+/**
* struct cfg80211_ops - backend description for wireless configuration
*
* This struct is registered by fullmac card drivers and/or wireless stacks
@@ -400,6 +465,11 @@ struct wiphy;
* @set_mesh_cfg: set mesh parameters (by now, just mesh id)
*
* @change_bss: Modify parameters for a given BSS.
+ *
+ * @scan: Request to do a scan. If returning zero, the scan request is given
+ * the driver, and will be valid until passed to cfg80211_scan_done().
+ * For scan results, call cfg80211_inform_bss(); you can call this out
+ * of the scan/scan_done bracket too.
*/
struct cfg80211_ops {
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
@@ -455,6 +525,53 @@ struct cfg80211_ops {
int (*change_bss)(struct wiphy *wiphy, struct net_device *dev,
struct bss_parameters *params);
+
+ int (*scan)(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_scan_request *request);
};
+/**
+ * cfg80211_scan_done - notify that scan finished
+ *
+ * @request: the corresponding scan request
+ */
+void cfg80211_scan_done(struct cfg80211_scan_request *request);
+
+/**
+ * cfg80211_inform_bss - inform cfg80211 of a new BSS
+ *
+ * @wiphy: the wiphy reporting the BSS
+ * @bss: the found BSS
+ * @gfp: context flags
+ *
+ * This informs cfg80211 that BSS information was found and
+ * the BSS should be updated/added.
+ */
+struct cfg80211_bss*
+cfg80211_inform_bss_frame(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ gfp_t gfp);
+
+struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *bssid,
+ const u8 *ssid, size_t ssid_len);
+struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *meshid, size_t meshidlen,
+ const u8 *meshcfg);
+void cfg80211_put_bss(struct cfg80211_bss *bss);
+#ifdef CONFIG_WIRELESS_EXT
+int cfg80211_wext_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra);
+int cfg80211_wext_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra);
+#else
+#define ieee80211_ioctl_siwscan NULL
+#define ieee80211_ioctl_giwscan NULL
+#endif
+
#endif /* __NET_CFG80211_H */
--- everything.orig/net/wireless/nl80211.c 2008-09-19 05:09:30.000000000 +0200
+++ everything/net/wireless/nl80211.c 2008-09-23 13:47:46.000000000 +0200
@@ -98,6 +98,8 @@ static struct nla_policy nl80211_policy[
[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
.len = NL80211_HT_CAPABILITY_LEN },
+ [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
+ [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
};
/* message building helper */
@@ -130,6 +132,8 @@ static int nl80211_send_wiphy(struct sk_
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
+ NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
+ dev->wiphy.max_scan_ssids);
nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
if (!nl_modes)
@@ -1753,6 +1757,233 @@ bad_reg:
return -EINVAL;
}
+static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ struct net_device *dev;
+ struct cfg80211_scan_request *request;
+ struct cfg80211_ssid *ssid;
+ struct ieee80211_channel *channel;
+ struct nlattr *attr;
+ struct wiphy *wiphy;
+ int err, tmp, n_ssids = 0, n_channels = 0, i;
+ enum ieee80211_band band;
+
+ err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+ if (err)
+ return err;
+
+ wiphy = &drv->wiphy;
+
+ if (!drv->ops->scan) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+
+ if (drv->scan_req) {
+ err = -EBUSY;
+ goto out_unlock;
+ }
+
+ if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
+ n_channels++;
+ if (!n_channels) {
+ err = -EINVAL;
+ goto out_unlock;
+ }
+ } else {
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ n_channels += wiphy->bands[band]->n_channels;
+ }
+
+ if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
+ n_ssids++;
+
+ if (n_ssids > wiphy->max_scan_ssids) {
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ request = kzalloc(sizeof(*request)
+ + sizeof(*ssid) * n_ssids
+ + sizeof(channel) * n_channels, GFP_KERNEL);
+ if (!request) {
+ err = -ENOMEM;
+ goto out_unlock;
+ }
+
+ request->channels = (void *)((char *)request + sizeof(*request));
+ request->n_channels = n_channels;
+ if (n_ssids)
+ request->ssids = (void *)(request->channels + n_channels);
+ request->n_ssids = n_ssids;
+
+ if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+ /* user specified, bail out if channel not found */
+ request->n_channels = n_channels;
+ i = 0;
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
+ request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
+ if (!request->channels[i]) {
+ err = -EINVAL;
+ goto out_free;
+ }
+ i++;
+ }
+ } else {
+ /* all channels */
+ i = 0;
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ int j;
+ if (!wiphy->bands[band])
+ continue;
+ for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+ request->channels[i] = &wiphy->bands[band]->channels[j];
+ i++;
+ }
+ }
+ }
+
+ i = 0;
+ if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
+ if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
+ err = -EINVAL;
+ goto out_free;
+ }
+ memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
+ request->ssids[i].ssid_len = nla_len(attr);
+ i++;
+ }
+ }
+
+ request->ifidx = dev->ifindex;
+ request->wiphy = &drv->wiphy;
+
+ drv->scan_req = request;
+ err = drv->ops->scan(&drv->wiphy, dev, request);
+
+ out_free:
+ if (err) {
+ drv->scan_req = NULL;
+ kfree(request);
+ }
+ out_unlock:
+ rtnl_unlock();
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
+ struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct cfg80211_bss *res)
+{
+ void *hdr;
+ struct nlattr *bss;
+
+ hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_SCAN);
+ if (!hdr)
+ return -1;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
+ rdev->bss_generation);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+
+ bss = nla_nest_start(msg, NL80211_ATTR_BSS);
+ if (!bss)
+ goto nla_put_failure;
+ if (res->bssid)
+ NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
+ if (res->information_elements && res->len_information_elements)
+ NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
+ res->len_information_elements,
+ res->information_elements);
+ if (res->tsf)
+ NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
+ NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
+ NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
+ NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
+
+ nla_nest_end(msg, bss);
+
+ return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int nl80211_dump_scan(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct cfg80211_registered_device *dev;
+ struct net_device *netdev;
+ struct cfg80211_internal_bss *scan;
+ int ifidx = cb->args[0];
+ int start = cb->args[1], idx = 0;
+ int err;
+
+ if (!ifidx) {
+ err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+ nl80211_fam.attrbuf, nl80211_fam.maxattr,
+ nl80211_policy);
+ if (err)
+ return err;
+
+ if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
+ return -EINVAL;
+
+ ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
+ if (!ifidx)
+ return -EINVAL;
+ cb->args[0] = ifidx;
+ }
+
+ netdev = dev_get_by_index(&init_net, ifidx);
+ if (!netdev)
+ return -ENODEV;
+
+ dev = cfg80211_get_dev_from_ifindex(ifidx);
+ if (IS_ERR(dev)) {
+ err = PTR_ERR(dev);
+ goto out_put_netdev;
+ }
+
+ spin_lock(&dev->bss_lock);
+ cfg80211_bss_expire(dev);
+
+ list_for_each_entry(scan, &dev->bss_list, list) {
+ if (++idx <= start)
+ continue;
+ if (nl80211_send_bss(skb,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ dev, netdev, &scan->pub) < 0) {
+ idx--;
+ goto out;
+ }
+ }
+
+ out:
+ spin_unlock(&dev->bss_lock);
+
+ cb->args[1] = idx;
+ err = skb->len;
+ cfg80211_put_dev(dev);
+ out_put_netdev:
+ dev_put(netdev);
+
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -1902,12 +2133,26 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
+ {
+ .cmd = NL80211_CMD_TRIGGER_SCAN,
+ .doit = nl80211_trigger_scan,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_GET_SCAN,
+ .policy = nl80211_policy,
+ .dumpit = nl80211_dump_scan,
+ },
};
/* multicast groups */
static struct genl_multicast_group nl80211_config_mcgrp = {
.name = "config",
};
+static struct genl_multicast_group nl80211_scan_mcgrp = {
+ .name = "scan",
+};
/* notification functions */
@@ -1927,6 +2172,48 @@ void nl80211_notify_dev_rename(struct cf
genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
}
+static int nl80211_send_scan_donemsg(struct sk_buff *msg,
+ struct cfg80211_registered_device *rdev,
+ struct net_device *netdev,
+ u32 pid, u32 seq, int flags)
+{
+ void *hdr;
+
+ hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_SCAN);
+ if (!hdr)
+ return -1;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+
+ /* XXX: I have no idea how to multicast large result sets */
+
+ /* XXX: we should probably just bounce back the request */
+
+ return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev)
+{
+ struct sk_buff *msg;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
+}
+
/* initialisation/exit functions */
int nl80211_init(void)
@@ -1947,6 +2234,10 @@ int nl80211_init(void)
if (err)
goto err_out;
+ err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
+ if (err)
+ goto err_out;
+
return 0;
err_out:
genl_unregister_family(&nl80211_fam);
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ everything/net/wireless/scan.c 2008-09-23 15:31:45.000000000 +0200
@@ -0,0 +1,720 @@
+/*
+ * cfg80211 scan result handling
+ *
+ * Copyright 2008 Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/nl80211.h>
+#include <linux/etherdevice.h>
+#include <net/arp.h>
+#include <net/cfg80211.h>
+#include <net/iw_handler.h>
+#include "core.h"
+#include "nl80211.h"
+
+#define IEEE80211_SCAN_RESULT_EXPIRE 10 * HZ
+
+void cfg80211_scan_done(struct cfg80211_scan_request *request)
+{
+ struct net_device *dev;
+#ifdef CONFIG_WIRELESS_EXT
+ union iwreq_data wrqu;
+#endif
+
+ dev = dev_get_by_index(&init_net, request->ifidx);
+ if (!dev)
+ goto out;
+
+ WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
+ wiphy_to_dev(request->wiphy)->scan_req = NULL;
+
+ nl80211_send_scan_done(wiphy_to_dev(request->wiphy), dev);
+
+#ifdef CONFIG_WIRELESS_EXT
+ memset(&wrqu, 0, sizeof(wrqu));
+
+ wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+#endif
+
+ dev_put(dev);
+
+ out:
+ kfree(request);
+}
+EXPORT_SYMBOL(cfg80211_scan_done);
+
+static void bss_release(struct kref *ref)
+{
+ struct cfg80211_internal_bss *bss;
+
+ bss = container_of(ref, struct cfg80211_internal_bss, ref);
+ kfree(bss);
+}
+
+/* must hold dev->bss_lock! */
+void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
+{
+ struct cfg80211_internal_bss *bss, *tmp;
+ bool expired = false;
+
+ list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
+ if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
+ continue;
+ list_del(&bss->list);
+ kfree(bss);
+ expired = true;
+ }
+
+ if (expired)
+ dev->bss_generation++;
+}
+
+static u8 *find_ie(u8 num, u8 *ies, size_t len)
+{
+ while (len > 2 && ies[0] != num) {
+ len -= ies[1] + 2;
+ ies += ies[1] + 2;
+ }
+ if (len < 2)
+ return NULL;
+ if (len < 2 + ies[1])
+ return NULL;
+ return ies;
+}
+
+static bool same_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2)
+{
+ const u8 *ie1 = find_ie(num, ies1, len1);
+ const u8 *ie2 = find_ie(num, ies2, len2);
+
+ if (ie1[1] != ie2[1])
+ return false;
+ return memcmp(ie1 + 2, ie2 + 2, ie1[1]) == 0;
+}
+
+static bool is_bss(struct cfg80211_bss *a,
+ const u8 *bssid,
+ const u8 *ssid, size_t ssid_len)
+{
+ const u8 *ssidie;
+
+ if (compare_ether_addr(a->bssid, bssid))
+ return false;
+
+ ssidie = find_ie(WLAN_EID_MESH_ID,
+ a->information_elements,
+ a->len_information_elements);
+ if (!ssidie)
+ return false;
+ if (ssidie[1] != ssid_len)
+ return false;
+ return memcmp(ssidie + 2, ssid, ssid_len) == 0;
+}
+
+static bool is_mesh(struct cfg80211_bss *a,
+ const u8 *meshid, size_t meshidlen,
+ const u8 *meshcfg)
+{
+ const u8 *ie;
+
+ if (!is_zero_ether_addr(a->bssid))
+ return false;
+
+ ie = find_ie(WLAN_EID_MESH_ID,
+ a->information_elements,
+ a->len_information_elements);
+ if (!ie)
+ return false;
+ if (ie[1] != meshidlen)
+ return false;
+ if (memcmp(ie + 2, meshid, meshidlen))
+ return false;
+
+ ie = find_ie(WLAN_EID_MESH_CONFIG,
+ a->information_elements,
+ a->len_information_elements);
+ if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
+ return false;
+
+ return memcmp(ie + 2, meshcfg, IEEE80211_MESH_CONFIG_LEN) == 0;
+}
+
+static bool same_bss(struct cfg80211_bss *a,
+ struct cfg80211_bss *b)
+{
+ if (compare_ether_addr(a->bssid, b->bssid))
+ return false;
+ if (a->channel != b->channel)
+ return false;
+ if (is_zero_ether_addr(a->bssid))
+ return same_ies(WLAN_EID_MESH_ID,
+ a->information_elements,
+ a->len_information_elements,
+ b->information_elements,
+ b->len_information_elements) &&
+ same_ies(WLAN_EID_MESH_CONFIG,
+ a->information_elements,
+ a->len_information_elements,
+ b->information_elements,
+ b->len_information_elements);
+ return same_ies(WLAN_EID_SSID,
+ a->information_elements,
+ a->len_information_elements,
+ b->information_elements,
+ b->len_information_elements);
+}
+
+struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *bssid,
+ const u8 *ssid, size_t ssid_len)
+{
+ struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
+ struct cfg80211_internal_bss *bss, *res = NULL;
+
+ spin_lock(&dev->bss_lock);
+
+ list_for_each_entry(bss, &dev->bss_list, list) {
+ if (channel && bss->pub.channel != channel)
+ continue;
+ if (is_bss(&bss->pub, bssid, ssid, ssid_len)) {
+ res = bss;
+ kref_get(&res->ref);
+ break;
+ }
+ }
+
+ spin_unlock(&dev->bss_lock);
+ if (!res)
+ return NULL;
+ return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_get_bss);
+
+struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ const u8 *meshid, size_t meshidlen,
+ const u8 *meshcfg)
+{
+ struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
+ struct cfg80211_internal_bss *bss, *res = NULL;
+
+ spin_lock(&dev->bss_lock);
+
+ list_for_each_entry(bss, &dev->bss_list, list) {
+ if (channel && bss->pub.channel != channel)
+ continue;
+ if (is_mesh(&bss->pub, meshid, meshidlen, meshcfg)) {
+ res = bss;
+ kref_get(&res->ref);
+ break;
+ }
+ }
+
+ spin_unlock(&dev->bss_lock);
+ if (!res)
+ return NULL;
+ return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_get_mesh);
+
+static struct cfg80211_internal_bss *
+cfg80211_bss_update(struct cfg80211_registered_device *dev,
+ struct cfg80211_internal_bss *res,
+ bool overwrite)
+{
+ struct cfg80211_internal_bss *bss, *tmp, *found = NULL;
+ const u8 *meshid, *meshcfg;
+
+ /*
+ * The reference to "res" is donated to this function.
+ */
+
+ if (WARN_ON(!res->pub.channel)) {
+ kref_put(&res->ref, bss_release);
+ return NULL;
+ }
+
+ res->ts = jiffies;
+
+ if (is_zero_ether_addr(res->pub.bssid)) {
+ /* must be mesh, verify */
+ meshid = find_ie(WLAN_EID_MESH_ID, res->pub.information_elements,
+ res->pub.len_information_elements);
+ meshcfg = find_ie(WLAN_EID_MESH_CONFIG,
+ res->pub.information_elements,
+ res->pub.len_information_elements);
+ if (!meshid || !meshcfg ||
+ meshcfg[1] != IEEE80211_MESH_CONFIG_LEN) {
+ /* bogus mesh */
+ kref_put(&res->ref, bss_release);
+ return NULL;
+ }
+ }
+
+ /* FIXME: This ought to have a hashtable */
+
+ spin_lock(&dev->bss_lock);
+
+ list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
+ if (!same_bss(&res->pub, &bss->pub))
+ continue;
+ if (overwrite) {
+ list_del(&bss->list);
+ kref_put(&bss->ref, bss_release);
+ } else {
+ found = bss;
+ }
+ break;
+ }
+
+ if (found) {
+ /* found (update only case) */
+ kref_get(&found->ref);
+ found->pub.beacon_interval = res->pub.beacon_interval;
+ found->pub.tsf = res->pub.tsf;
+ found->pub.capability = res->pub.capability;
+ found->ts = res->ts;
+ /* FIXME?
+ * mac80211 also updated
+ * - supported rates list
+ * - signal/noise/qual
+ * - wmm_used
+ * - erp info
+ */
+ kref_put(&res->ref, bss_release);
+ } else {
+ /* this "consumes" the reference */
+ list_add_tail(&res->list, &dev->bss_list);
+ found = res;
+ }
+
+ dev->bss_generation++;
+ spin_unlock(&dev->bss_lock);
+
+ kref_get(&found->ref);
+ return found;
+}
+
+struct cfg80211_bss *
+cfg80211_inform_bss_frame(struct wiphy *wiphy,
+ struct ieee80211_channel *channel,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ gfp_t gfp)
+{
+ struct cfg80211_internal_bss *res;
+ size_t ielen = len - offsetof(struct ieee80211_mgmt,
+ u.probe_resp.variable);
+ bool overwrite;
+ size_t privsz = wiphy->bss_priv_size;
+
+ if (WARN_ON(!mgmt || !wiphy ||
+ len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
+ return NULL;
+
+ res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
+ if (!res)
+ return NULL;
+
+ memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN);
+ res->pub.channel = channel;
+ res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
+ res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
+ res->pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
+ /* point to after the private area */
+ res->pub.information_elements = (u8 *)res + sizeof(*res) + privsz;
+ memcpy(res->pub.information_elements, mgmt->u.probe_resp.variable, ielen);
+ res->pub.len_information_elements = ielen;
+
+ kref_init(&res->ref);
+
+ overwrite = ieee80211_is_probe_resp(mgmt->frame_control);
+
+ res = cfg80211_bss_update(wiphy_to_dev(wiphy), res, overwrite);
+ if (!res)
+ return NULL;
+
+ /* cfg80211_bss_update gives us a referenced result */
+ return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_inform_bss_frame);
+
+void cfg80211_put_bss(struct cfg80211_bss *pub)
+{
+ struct cfg80211_internal_bss *bss;
+
+ if (!pub)
+ return;
+
+ bss = container_of(pub, struct cfg80211_internal_bss, pub);
+ kref_put(&bss->ref, bss_release);
+}
+EXPORT_SYMBOL(cfg80211_put_bss);
+
+#ifdef CONFIG_WIRELESS_EXT
+int cfg80211_wext_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct cfg80211_registered_device *rdev;
+ struct wiphy *wiphy;
+ struct iw_scan_req *wreq = NULL;
+ struct cfg80211_scan_request *creq;
+ int i, err, n_channels = 0;
+ enum ieee80211_band band;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+
+ if (IS_ERR(rdev))
+ return PTR_ERR(rdev);
+
+ if (rdev->scan_req) {
+ err = -EBUSY;
+ goto out;
+ }
+
+ wiphy = &rdev->wiphy;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ n_channels += wiphy->bands[band]->n_channels;
+
+ creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
+ n_channels * sizeof(void *),
+ GFP_ATOMIC);
+ if (!creq) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ creq->wiphy = wiphy;
+ creq->ifidx = dev->ifindex;
+ creq->ssids = (void *)(creq + 1);
+ creq->channels = (void *)(creq->ssids + 1);
+ creq->n_channels = n_channels;
+ creq->n_ssids = 1;
+
+ /* all channels */
+ i = 0;
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ int j;
+ if (!wiphy->bands[band])
+ continue;
+ for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+ creq->channels[i] = &wiphy->bands[band]->channels[j];
+ i++;
+ }
+ }
+
+ /* translate scan request */
+ if (wrqu->data.length == sizeof(struct iw_scan_req)) {
+ wreq = (struct iw_scan_req *)extra;
+
+ if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+ if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+ memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len);
+ creq->ssids[0].ssid_len = wreq->essid_len;
+ }
+ if (wreq->scan_type == IW_SCAN_TYPE_PASSIVE)
+ creq->n_ssids = 0;
+ }
+
+ rdev->scan_req = creq;
+ err = rdev->ops->scan(wiphy, dev, creq);
+ if (err) {
+ rdev->scan_req = NULL;
+ kfree(creq);
+ }
+ out:
+ cfg80211_put_dev(rdev);
+ return err;
+}
+EXPORT_SYMBOL(cfg80211_wext_siwscan);
+
+static void ieee80211_scan_add_ies(struct iw_request_info *info,
+ struct cfg80211_bss *bss,
+ char **current_ev, char *end_buf)
+{
+ u8 *pos, *end, *next;
+ struct iw_event iwe;
+
+ if (!bss->information_elements ||
+ !bss->len_information_elements)
+ return;
+
+ /*
+ * If needed, fragment the IEs buffer (at IE boundaries) into short
+ * enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
+ */
+ pos = bss->information_elements;
+ end = pos + bss->len_information_elements;
+
+ while (end - pos > IW_GENERIC_IE_MAX) {
+ next = pos + 2 + pos[1];
+ while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
+ next = next + 2 + next[1];
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = next - pos;
+ *current_ev = iwe_stream_add_point(info, *current_ev,
+ end_buf, &iwe, pos);
+
+ pos = next;
+ }
+
+ if (end > pos) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = end - pos;
+ *current_ev = iwe_stream_add_point(info, *current_ev,
+ end_buf, &iwe, pos);
+ }
+}
+
+
+static char *
+ieee80211_bss(struct iw_request_info *info,
+ struct cfg80211_internal_bss *bss,
+ char *current_ev, char *end_buf)
+{
+ struct iw_event iwe;
+ u8 *buf, *cfg, *p;
+ u8 *ie = bss->pub.information_elements;
+ int rem = bss->pub.len_information_elements, i;
+ bool ismesh = false;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, bss->pub.bssid, ETH_ALEN);
+ current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+ IW_EV_ADDR_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = ieee80211_frequency_to_channel(bss->pub.channel->center_freq);
+ iwe.u.freq.e = 0;
+ current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = bss->pub.channel->center_freq;
+ iwe.u.freq.e = 6;
+ current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+#if 0
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVQUAL;
+ iwe.u.qual.qual = bss->pub.qual;
+ iwe.u.qual.level = bss->pub.signal;
+ iwe.u.qual.noise = bss->pub.noise;
+ iwe.u.qual.updated = 0; /* XXXX */
+ current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+ IW_EV_QUAL_LEN);
+#endif
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWENCODE;
+ if (bss->pub.capability & WLAN_CAPABILITY_PRIVACY)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+ &iwe, "");
+
+ while (rem >= 2) {
+ /* invalid data */
+ if (ie[1] > rem - 2)
+ break;
+
+ switch (ie[0]) {
+ case WLAN_EID_SSID:
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.length = ie[1];
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+ &iwe, ie + 2);
+ break;
+ case WLAN_EID_MESH_ID:
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.length = ie[1];
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+ &iwe, ie + 2);
+ break;
+ case WLAN_EID_MESH_CONFIG:
+ ismesh = true;
+ if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
+ break;
+ buf = kmalloc(50, GFP_ATOMIC);
+ if (!buf)
+ break;
+ cfg = ie + 2;
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "Mesh network (version %d)", cfg[0]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Protocol ID: "
+ "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+ cfg[4]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Metric ID: "
+ "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+ cfg[8]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf,
+ &iwe, buf);
+ sprintf(buf, "Congestion Control Mode ID: "
+ "0x%02X%02X%02X%02X", cfg[9], cfg[10],
+ cfg[11], cfg[12]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf,
+ &iwe, buf);
+ sprintf(buf, "Channel Precedence: "
+ "0x%02X%02X%02X%02X", cfg[13], cfg[14],
+ cfg[15], cfg[16]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf,
+ &iwe, buf);
+ kfree(buf);
+ break;
+ case WLAN_EID_SUPP_RATES:
+ case WLAN_EID_EXT_SUPP_RATES:
+ /* display all supported rates in readable format */
+ p = current_ev + iwe_stream_lcp_len(info);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWRATE;
+ /* Those two flags are ignored... */
+ iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+
+ for (i = 0; i < ie[1]; i++) {
+ iwe.u.bitrate.value =
+ ((ie[i + 2] & 0x7f) * 500000);
+ p = iwe_stream_add_value(info, current_ev, p,
+ end_buf, &iwe, IW_EV_PARAM_LEN);
+ }
+ current_ev = p;
+ break;
+ }
+ rem -= ie[1] + 2;
+ ie += ie[1] + 2;
+ }
+
+ if (bss->pub.capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+ || ismesh) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWMODE;
+ if (ismesh)
+ iwe.u.mode = IW_MODE_MESH;
+ else if (bss->pub.capability & WLAN_CAPABILITY_ESS)
+ iwe.u.mode = IW_MODE_MASTER;
+ else
+ iwe.u.mode = IW_MODE_ADHOC;
+ current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+ &iwe, IW_EV_UINT_LEN);
+ }
+
+ buf = kmalloc(30, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->pub.tsf));
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+ &iwe, buf);
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, " Last beacon: %dms ago",
+ jiffies_to_msecs(jiffies - bss->ts));
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(info, current_ev,
+ end_buf, &iwe, buf);
+ kfree(buf);
+ }
+
+ ieee80211_scan_add_ies(info, &bss->pub, ¤t_ev, end_buf);
+
+ return current_ev;
+}
+
+
+int ieee80211_scan_results(struct cfg80211_registered_device *dev,
+ struct iw_request_info *info,
+ char *buf, size_t len)
+{
+ char *current_ev = buf;
+ char *end_buf = buf + len;
+ struct cfg80211_internal_bss *bss;
+
+ spin_lock_bh(&dev->bss_lock);
+ cfg80211_bss_expire(dev);
+
+ list_for_each_entry(bss, &dev->bss_list, list) {
+ if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
+ spin_unlock_bh(&dev->bss_lock);
+ return -E2BIG;
+ }
+ current_ev = ieee80211_bss(info, bss,
+ current_ev, end_buf);
+ }
+ spin_unlock_bh(&dev->bss_lock);
+ return current_ev - buf;
+}
+
+
+int cfg80211_wext_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct cfg80211_registered_device *rdev;
+ int res;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+
+ if (IS_ERR(rdev))
+ return PTR_ERR(rdev);
+
+ if (rdev->scan_req) {
+ res = -EAGAIN;
+ goto out;
+ }
+
+ res = ieee80211_scan_results (rdev, info, extra, data->length);
+ data->length = 0;
+ if (res >= 0) {
+ data->length = res;
+ res = 0;
+ }
+
+ out:
+ cfg80211_put_dev(rdev);
+ return res;
+}
+EXPORT_SYMBOL(cfg80211_wext_giwscan);
+#endif
--- everything.orig/net/mac80211/ieee80211_i.h 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/ieee80211_i.h 2008-09-23 15:26:26.000000000 +0200
@@ -23,6 +23,7 @@
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
+#include <net/cfg80211.h>
#include <net/wireless.h>
#include <net/iw_handler.h>
#include <net/mac80211.h>
@@ -318,8 +319,6 @@ struct ieee80211_if_sta {
u8 ssid[IEEE80211_MAX_SSID_LEN];
enum ieee80211_sta_mlme_state state;
size_t ssid_len;
- u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
- size_t scan_ssid_len;
u16 aid;
u16 ap_capab, capab;
u8 *extra_ie; /* to be added to the end of AssocReq */
@@ -651,16 +650,17 @@ struct ieee80211_local {
/* Scanning and BSS list */
bool sw_scanning, hw_scanning;
+ struct cfg80211_ssid scan_ssid;
+ struct cfg80211_scan_request int_scan_req;
+ struct cfg80211_scan_request *scan_req;
+ struct ieee80211_channel *scan_channel;
int scan_channel_idx;
- enum ieee80211_band scan_band;
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
- struct ieee80211_channel *oper_channel, *scan_channel;
- u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
- size_t scan_ssid_len;
+ struct ieee80211_channel *oper_channel;
struct list_head bss_list;
struct ieee80211_bss *bss_hash[STA_HASH_SIZE];
spinlock_t bss_lock;
@@ -921,7 +921,7 @@ void ieee80211_send_probe_req(struct iee
/* scan/BSS handling */
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
- u8 *ssid, size_t ssid_len);
+ struct cfg80211_scan_request *req);
int ieee80211_scan_results(struct ieee80211_local *local,
struct iw_request_info *info,
char *buf, size_t len);
@@ -936,14 +936,15 @@ int ieee80211_sta_set_extra_ie(struct ie
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
- u8 *ssid, size_t ssid_len);
+ struct cfg80211_scan_request *req);
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
- int freq, bool beacon);
+ struct ieee80211_channel *channel,
+ bool beacon);
struct ieee80211_bss *
ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
--- everything.orig/net/mac80211/scan.c 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/scan.c 2008-09-23 15:28:08.000000000 +0200
@@ -13,6 +13,9 @@
*/
/* TODO:
+ * figure out how to avoid that the "current BSS" expires
+ * clean up IBSS code (in MLME), see why it adds a BSS to the list
+ * use cfg80211's BSS handling (depends on IBSS TODO above)
* order BSS list by RSSI(?) ("quality of AP")
* scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
* SSID)
@@ -159,7 +162,7 @@ ieee80211_rx_mesh_bss_add(struct ieee802
{
struct ieee80211_bss *bss;
- if (mesh_config_len != MESH_CFG_LEN)
+ if (mesh_config_len != IEEE80211_MESH_CONFIG_LEN)
return NULL;
bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
@@ -224,10 +227,15 @@ ieee80211_bss_info_update(struct ieee802
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
- int freq, bool beacon)
+ struct ieee80211_channel *channel,
+ bool beacon)
{
struct ieee80211_bss *bss;
- int clen;
+ int clen, freq = channel->center_freq;
+
+ cfg80211_put_bss(
+ cfg80211_inform_bss_frame(local->hw.wiphy, channel,
+ mgmt, len, GFP_ATOMIC));
#ifdef CONFIG_MAC80211_MESH
if (elems->mesh_config)
@@ -387,7 +395,7 @@ ieee80211_scan_rx(struct ieee80211_sub_i
bss = ieee80211_bss_info_update(sdata->local, rx_status,
mgmt, skb->len, &elems,
- freq, beacon);
+ channel, beacon);
ieee80211_rx_bss_put(sdata->local, bss);
dev_kfree_skb(skb);
@@ -428,22 +436,18 @@ void ieee80211_scan_completed(struct iee
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
- union iwreq_data wrqu;
if (WARN_ON(!local->hw_scanning && !local->sw_scanning))
return;
- local->last_scan_completed = jiffies;
- memset(&wrqu, 0, sizeof(wrqu));
+ if (WARN_ON(!local->scan_req))
+ return;
- /*
- * local->scan_sdata could have been NULLed by the interface
- * down code in case we were scanning on an interface that is
- * being taken down.
- */
- sdata = local->scan_sdata;
- if (sdata)
- wireless_send_event(sdata->dev, SIOCGIWSCAN, &wrqu, NULL);
+ if (local->scan_req != &local->int_scan_req)
+ cfg80211_scan_done(local->scan_req);
+ local->scan_req = NULL;
+
+ local->last_scan_completed = jiffies;
if (local->hw_scanning) {
local->hw_scanning = false;
@@ -497,9 +501,8 @@ void ieee80211_scan_work(struct work_str
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, scan_work.work);
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
- struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
- int skip;
+ int skip, i;
unsigned long next_delay = 0;
/*
@@ -510,33 +513,13 @@ void ieee80211_scan_work(struct work_str
switch (local->scan_state) {
case SCAN_SET_CHANNEL:
- /*
- * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
- * after we successfully scanned the last channel of the last
- * band (and the last band is supported by the hw)
- */
- if (local->scan_band < IEEE80211_NUM_BANDS)
- sband = local->hw.wiphy->bands[local->scan_band];
- else
- sband = NULL;
-
- /*
- * If we are at an unsupported band and have more bands
- * left to scan, advance to the next supported one.
- */
- while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
- local->scan_band++;
- sband = local->hw.wiphy->bands[local->scan_band];
- local->scan_channel_idx = 0;
- }
-
/* if no more bands/channels left, complete scan */
- if (!sband || local->scan_channel_idx >= sband->n_channels) {
+ if (local->scan_channel_idx >= local->scan_req->n_channels) {
ieee80211_scan_completed(local_to_hw(local));
return;
}
skip = 0;
- chan = &sband->channels[local->scan_channel_idx];
+ chan = local->scan_req->channels[local->scan_channel_idx];
if (chan->flags & IEEE80211_CHAN_DISABLED ||
(sdata->vif.type == NL80211_IFTYPE_ADHOC &&
@@ -555,15 +538,6 @@ void ieee80211_scan_work(struct work_str
/* advance state machine to next channel/band */
local->scan_channel_idx++;
- if (local->scan_channel_idx >= sband->n_channels) {
- /*
- * scan_band may end up == IEEE80211_NUM_BANDS, but
- * we'll catch that case above and complete the scan
- * if that is the case.
- */
- local->scan_band++;
- local->scan_channel_idx = 0;
- }
if (skip)
break;
@@ -576,10 +550,14 @@ void ieee80211_scan_work(struct work_str
next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
local->scan_state = SCAN_SET_CHANNEL;
- if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
+ !local->scan_req->n_ssids)
break;
- ieee80211_send_probe_req(sdata, NULL, local->scan_ssid,
- local->scan_ssid_len);
+ for (i=0; i < local->scan_req->n_ssids; i++)
+ ieee80211_send_probe_req(
+ sdata, NULL,
+ local->scan_req->ssids[i].ssid,
+ local->scan_req->ssids[i].ssid_len);
next_delay = IEEE80211_CHANNEL_TIME;
break;
}
@@ -590,14 +568,19 @@ void ieee80211_scan_work(struct work_str
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
- u8 *ssid, size_t ssid_len)
+ struct cfg80211_scan_request *req)
{
struct ieee80211_local *local = scan_sdata->local;
struct ieee80211_sub_if_data *sdata;
- if (ssid_len > IEEE80211_MAX_SSID_LEN)
+ if (!req)
return -EINVAL;
+ if (local->scan_req && local->scan_req != req)
+ return -EBUSY;
+
+ local->scan_req = req;
+
/* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
* BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
* BSSID: MACAddress
@@ -625,7 +608,7 @@ int ieee80211_start_scan(struct ieee8021
int rc;
local->hw_scanning = true;
- rc = local->ops->hw_scan(local_to_hw(local), ssid, ssid_len);
+ rc = local->ops->hw_scan(local_to_hw(local), req);
if (rc) {
local->hw_scanning = false;
return rc;
@@ -648,15 +631,10 @@ int ieee80211_start_scan(struct ieee8021
}
rcu_read_unlock();
- if (ssid) {
- local->scan_ssid_len = ssid_len;
- memcpy(local->scan_ssid, ssid, ssid_len);
- } else
- local->scan_ssid_len = 0;
local->scan_state = SCAN_SET_CHANNEL;
local->scan_channel_idx = 0;
- local->scan_band = IEEE80211_BAND_2GHZ;
local->scan_sdata = scan_sdata;
+ local->scan_req = req;
netif_addr_lock_bh(local->mdev);
local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
@@ -676,13 +654,21 @@ int ieee80211_start_scan(struct ieee8021
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
- u8 *ssid, size_t ssid_len)
+ struct cfg80211_scan_request *req)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_sta *ifsta;
+ if (!req)
+ return -EINVAL;
+
+ if (local->scan_req && local->scan_req != req)
+ return -EBUSY;
+
+ local->scan_req = req;
+
if (sdata->vif.type != NL80211_IFTYPE_STATION)
- return ieee80211_start_scan(sdata, ssid, ssid_len);
+ return ieee80211_start_scan(sdata, req);
/*
* STA has a state machine that might need to defer scanning
@@ -697,241 +683,8 @@ int ieee80211_request_scan(struct ieee80
}
ifsta = &sdata->u.sta;
-
- ifsta->scan_ssid_len = ssid_len;
- if (ssid_len)
- memcpy(ifsta->scan_ssid, ssid, ssid_len);
set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
queue_work(local->hw.workqueue, &ifsta->work);
return 0;
}
-
-
-static void ieee80211_scan_add_ies(struct iw_request_info *info,
- struct ieee80211_bss *bss,
- char **current_ev, char *end_buf)
-{
- u8 *pos, *end, *next;
- struct iw_event iwe;
-
- if (bss == NULL || bss->ies == NULL)
- return;
-
- /*
- * If needed, fragment the IEs buffer (at IE boundaries) into short
- * enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
- */
- pos = bss->ies;
- end = pos + bss->ies_len;
-
- while (end - pos > IW_GENERIC_IE_MAX) {
- next = pos + 2 + pos[1];
- while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
- next = next + 2 + next[1];
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = next - pos;
- *current_ev = iwe_stream_add_point(info, *current_ev,
- end_buf, &iwe, pos);
-
- pos = next;
- }
-
- if (end > pos) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = end - pos;
- *current_ev = iwe_stream_add_point(info, *current_ev,
- end_buf, &iwe, pos);
- }
-}
-
-
-static char *
-ieee80211_scan_result(struct ieee80211_local *local,
- struct iw_request_info *info,
- struct ieee80211_bss *bss,
- char *current_ev, char *end_buf)
-{
- struct iw_event iwe;
- char *buf;
-
- if (time_after(jiffies,
- bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
- return current_ev;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
- current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
- IW_EV_ADDR_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWESSID;
- if (bss_mesh_cfg(bss)) {
- iwe.u.data.length = bss_mesh_id_len(bss);
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(info, current_ev, end_buf,
- &iwe, bss_mesh_id(bss));
- } else {
- iwe.u.data.length = bss->ssid_len;
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(info, current_ev, end_buf,
- &iwe, bss->ssid);
- }
-
- if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
- || bss_mesh_cfg(bss)) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWMODE;
- if (bss_mesh_cfg(bss))
- iwe.u.mode = IW_MODE_MESH;
- else if (bss->capability & WLAN_CAPABILITY_ESS)
- iwe.u.mode = IW_MODE_MASTER;
- else
- iwe.u.mode = IW_MODE_ADHOC;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf,
- &iwe, IW_EV_UINT_LEN);
- }
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
- iwe.u.freq.e = 0;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = bss->freq;
- iwe.u.freq.e = 6;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVQUAL;
- iwe.u.qual.qual = bss->qual;
- iwe.u.qual.level = bss->signal;
- iwe.u.qual.noise = bss->noise;
- iwe.u.qual.updated = local->wstats_flags;
- current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
- IW_EV_QUAL_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWENCODE;
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
- iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- else
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- iwe.u.data.length = 0;
- current_ev = iwe_stream_add_point(info, current_ev, end_buf,
- &iwe, "");
-
- ieee80211_scan_add_ies(info, bss, ¤t_ev, end_buf);
-
- if (bss->supp_rates_len > 0) {
- /* display all supported rates in readable format */
- char *p = current_ev + iwe_stream_lcp_len(info);
- int i;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWRATE;
- /* Those two flags are ignored... */
- iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
-
- for (i = 0; i < bss->supp_rates_len; i++) {
- iwe.u.bitrate.value = ((bss->supp_rates[i] &
- 0x7f) * 500000);
- p = iwe_stream_add_value(info, current_ev, p,
- end_buf, &iwe, IW_EV_PARAM_LEN);
- }
- current_ev = p;
- }
-
- buf = kmalloc(30, GFP_ATOMIC);
- if (buf) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev, end_buf,
- &iwe, buf);
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, " Last beacon: %dms ago",
- jiffies_to_msecs(jiffies - bss->last_update));
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf, &iwe, buf);
- kfree(buf);
- }
-
- if (bss_mesh_cfg(bss)) {
- u8 *cfg = bss_mesh_cfg(bss);
- buf = kmalloc(50, GFP_ATOMIC);
- if (buf) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "Mesh network (version %d)", cfg[0]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf,
- &iwe, buf);
- sprintf(buf, "Path Selection Protocol ID: "
- "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
- cfg[4]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf,
- &iwe, buf);
- sprintf(buf, "Path Selection Metric ID: "
- "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
- cfg[8]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf,
- &iwe, buf);
- sprintf(buf, "Congestion Control Mode ID: "
- "0x%02X%02X%02X%02X", cfg[9], cfg[10],
- cfg[11], cfg[12]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf,
- &iwe, buf);
- sprintf(buf, "Channel Precedence: "
- "0x%02X%02X%02X%02X", cfg[13], cfg[14],
- cfg[15], cfg[16]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(info, current_ev,
- end_buf,
- &iwe, buf);
- kfree(buf);
- }
- }
-
- return current_ev;
-}
-
-
-int ieee80211_scan_results(struct ieee80211_local *local,
- struct iw_request_info *info,
- char *buf, size_t len)
-{
- char *current_ev = buf;
- char *end_buf = buf + len;
- struct ieee80211_bss *bss;
-
- spin_lock_bh(&local->bss_lock);
- list_for_each_entry(bss, &local->bss_list, list) {
- if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
- spin_unlock_bh(&local->bss_lock);
- return -E2BIG;
- }
- current_ev = ieee80211_scan_result(local, info, bss,
- current_ev, end_buf);
- }
- spin_unlock_bh(&local->bss_lock);
- return current_ev - buf;
-}
--- everything.orig/net/mac80211/wext.c 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/wext.c 2008-09-19 13:43:08.000000000 +0200
@@ -526,59 +526,6 @@ static int ieee80211_ioctl_giwap(struct
}
-static int ieee80211_ioctl_siwscan(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct iw_scan_req *req = NULL;
- u8 *ssid = NULL;
- size_t ssid_len = 0;
-
- if (!netif_running(dev))
- return -ENETDOWN;
-
- if (sdata->vif.type != NL80211_IFTYPE_STATION &&
- sdata->vif.type != NL80211_IFTYPE_ADHOC &&
- sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
- sdata->vif.type != NL80211_IFTYPE_AP)
- return -EOPNOTSUPP;
-
- /* if SSID was specified explicitly then use that */
- if (wrqu->data.length == sizeof(struct iw_scan_req) &&
- wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- req = (struct iw_scan_req *)extra;
- ssid = req->essid;
- ssid_len = req->essid_len;
- }
-
- return ieee80211_request_scan(sdata, ssid, ssid_len);
-}
-
-
-static int ieee80211_ioctl_giwscan(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- int res;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (local->sw_scanning || local->hw_scanning)
- return -EAGAIN;
-
- res = ieee80211_scan_results(local, info, extra, data->length);
- if (res >= 0) {
- data->length = res;
- return 0;
- }
- data->length = 0;
- return res;
-}
-
-
static int ieee80211_ioctl_siwrate(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rate, char *extra)
@@ -1191,8 +1138,8 @@ static const iw_handler ieee80211_handle
(iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
(iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
(iw_handler) NULL, /* SIOCGIWAPLIST */
- (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
- (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
+ (iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
+ (iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
(iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
(iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
(iw_handler) NULL, /* SIOCSIWNICKN */
--- everything.orig/net/mac80211/mlme.c 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/mlme.c 2008-09-23 15:27:40.000000000 +0200
@@ -1553,7 +1553,7 @@ static void ieee80211_rx_bss_info(struct
}
bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
- freq, beacon);
+ channel, beacon);
if (!bss)
return;
@@ -1903,7 +1903,15 @@ static void ieee80211_sta_merge_ibss(str
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
"IBSS networks with same SSID (merge)\n", sdata->dev->name);
- ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (sdata->local->scan_req)
+ return;
+
+ memcpy(sdata->local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ sdata->local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_request_scan(sdata, &sdata->local->int_scan_req);
}
@@ -2120,8 +2128,15 @@ dont_join:
IEEE80211_SCAN_INTERVAL)) {
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->dev->name);
- return ieee80211_request_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -EBUSY;
+
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ return ieee80211_request_scan(sdata, &local->int_scan_req);
} else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) {
int interval = IEEE80211_SCAN_INTERVAL;
@@ -2216,11 +2231,16 @@ static int ieee80211_sta_config_auth(str
} else {
if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
ifsta->assoc_scan_tries++;
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -1;
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_start_scan(sdata, NULL, 0);
+ local->int_scan_req.ssids[0].ssid_len = 0;
else
- ieee80211_start_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_start_scan(sdata, &local->int_scan_req);
ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
} else
@@ -2256,8 +2276,7 @@ static void ieee80211_sta_work(struct wo
ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- ieee80211_start_scan(sdata, ifsta->scan_ssid,
- ifsta->scan_ssid_len);
+ ieee80211_start_scan(sdata, local->scan_req);
return;
}
--- everything.orig/net/mac80211/cfg.c 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/cfg.c 2008-09-19 13:45:50.000000000 +0200
@@ -993,6 +993,29 @@ static int ieee80211_change_bss(struct w
return 0;
}
+static int ieee80211_scan(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct cfg80211_scan_request *req)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+ sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+ sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
+ sdata->vif.type != NL80211_IFTYPE_AP)
+ return -EOPNOTSUPP;
+
+ if (req->n_ssids != 1)
+ return -EINVAL;
+
+ return ieee80211_request_scan(sdata, req);
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1017,4 +1040,5 @@ struct cfg80211_ops mac80211_config_ops
.dump_mpath = ieee80211_dump_mpath,
#endif
.change_bss = ieee80211_change_bss,
+ .scan = ieee80211_scan,
};
--- everything.orig/net/wireless/Makefile 2008-09-19 05:09:30.000000000 +0200
+++ everything/net/wireless/Makefile 2008-09-19 05:15:31.000000000 +0200
@@ -1,5 +1,5 @@
obj-$(CONFIG_WIRELESS_EXT) += wext.o
obj-$(CONFIG_CFG80211) += cfg80211.o
-cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o
+cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o
cfg80211-$(CONFIG_NL80211) += nl80211.o
--- everything.orig/net/mac80211/main.c 2008-09-19 05:09:31.000000000 +0200
+++ everything/net/mac80211/main.c 2008-09-23 15:12:31.000000000 +0200
@@ -736,6 +736,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(
return NULL;
wiphy->privid = mac80211_wiphy_privid;
+ wiphy->max_scan_ssids = 4;
local = wiphy_priv(wiphy);
local->hw.wiphy = wiphy;
@@ -793,25 +794,33 @@ int ieee80211_register_hw(struct ieee802
enum ieee80211_band band;
struct net_device *mdev;
struct ieee80211_master_priv *mpriv;
+ int channels, i, j;
/*
* generic code guarantees at least one band,
* set this very early because much code assumes
* that hw.conf.channel is assigned
*/
+ channels = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = local->hw.wiphy->bands[band];
- if (sband) {
+ if (sband && !local->oper_channel) {
/* init channel we're on */
local->hw.conf.channel =
local->oper_channel =
local->scan_channel = &sband->channels[0];
- break;
}
+ if (sband)
+ channels += sband->n_channels;
}
+ local->int_scan_req.n_channels = channels;
+ local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL);
+ if (!local->int_scan_req.channels)
+ return -ENOMEM;
+
/* if low-level driver supports AP, we also support VLAN */
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
@@ -821,7 +830,7 @@ int ieee80211_register_hw(struct ieee802
result = wiphy_register(local->hw.wiphy);
if (result < 0)
- return result;
+ goto fail_wiphy_register;
/*
* We use the number of queues for feature tests (QoS, HT) internally
@@ -932,6 +941,19 @@ int ieee80211_register_hw(struct ieee802
ieee80211_led_init(local);
+ /* alloc internal scan request */
+ i = 0;
+ local->int_scan_req.ssids = &local->scan_ssid;
+ local->int_scan_req.n_ssids = 1;
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ if (!hw->wiphy->bands[band])
+ continue;
+ for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) {
+ local->int_scan_req.channels[i] = &hw->wiphy->bands[band]->channels[j];
+ i++;
+ }
+ }
+
return 0;
fail_wep:
@@ -950,6 +972,8 @@ fail_workqueue:
free_netdev(local->mdev);
fail_mdev_alloc:
wiphy_unregister(local->hw.wiphy);
+fail_wiphy_register:
+ kfree(local->int_scan_req.channels);
return result;
}
EXPORT_SYMBOL(ieee80211_register_hw);
@@ -995,6 +1019,7 @@ void ieee80211_unregister_hw(struct ieee
ieee80211_wep_free(local);
ieee80211_led_exit(local);
free_netdev(local->mdev);
+ kfree(local->int_scan_req.channels);
}
EXPORT_SYMBOL(ieee80211_unregister_hw);
--- everything.orig/net/wireless/nl80211.h 2008-09-19 05:09:30.000000000 +0200
+++ everything/net/wireless/nl80211.h 2008-09-19 05:15:31.000000000 +0200
@@ -7,6 +7,8 @@
extern int nl80211_init(void);
extern void nl80211_exit(void);
extern void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev);
+extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev);
#else
static inline int nl80211_init(void)
{
@@ -19,6 +21,10 @@ static inline void nl80211_notify_dev_re
struct cfg80211_registered_device *rdev)
{
}
+static inline void
+nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev)
+{}
#endif /* CONFIG_NL80211 */
#endif /* __NET_WIRELESS_NL80211_H */
--- everything.orig/net/wireless/core.c 2008-09-19 05:09:30.000000000 +0200
+++ everything/net/wireless/core.c 2008-09-22 14:40:54.000000000 +0200
@@ -244,6 +244,8 @@ struct wiphy *wiphy_new(struct cfg80211_
mutex_init(&drv->mtx);
mutex_init(&drv->devlist_mtx);
INIT_LIST_HEAD(&drv->netdev_list);
+ spin_lock_init(&drv->bss_lock);
+ INIT_LIST_HEAD(&drv->bss_list);
device_initialize(&drv->wiphy.dev);
drv->wiphy.dev.class = &ieee80211_class;
@@ -263,6 +265,9 @@ int wiphy_register(struct wiphy *wiphy)
int i;
u16 ifmodes = wiphy->interface_modes;
+ if (WARN_ON(wiphy->max_scan_ssids < 1))
+ return -EINVAL;
+
/* sanity check ifmodes */
WARN_ON(!ifmodes);
ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1;
@@ -361,8 +366,11 @@ EXPORT_SYMBOL(wiphy_unregister);
void cfg80211_dev_free(struct cfg80211_registered_device *drv)
{
+ struct cfg80211_internal_bss *scan, *tmp;
mutex_destroy(&drv->mtx);
mutex_destroy(&drv->devlist_mtx);
+ list_for_each_entry_safe(scan, tmp, &drv->bss_list, list)
+ kfree(scan);
kfree(drv);
}
--- everything.orig/net/wireless/core.h 2008-09-19 05:09:30.000000000 +0200
+++ everything/net/wireless/core.h 2008-09-23 15:23:49.000000000 +0200
@@ -8,6 +8,7 @@
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/netdevice.h>
+#include <linux/kref.h>
#include <net/genetlink.h>
#include <net/wireless.h>
#include <net/cfg80211.h>
@@ -28,6 +29,12 @@ struct cfg80211_registered_device {
struct mutex devlist_mtx;
struct list_head netdev_list;
+ /* BSSes/scanning */
+ spinlock_t bss_lock;
+ struct list_head bss_list;
+ u32 bss_generation;
+ struct cfg80211_scan_request *scan_req; /* protected by RTNL */
+
/* must be last because of the way we do wiphy_priv(),
* and it should at least be aligned to NETDEV_ALIGN */
struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
@@ -43,6 +50,14 @@ struct cfg80211_registered_device *wiphy
extern struct mutex cfg80211_drv_mutex;
extern struct list_head cfg80211_drv_list;
+struct cfg80211_internal_bss {
+ struct list_head list;
+ unsigned long ts;
+ struct kref ref;
+ /* must be last because of priv member */
+ struct cfg80211_bss pub;
+};
+
/*
* This function returns a pointer to the driver
* that the genl_info item that is passed refers to.
@@ -81,4 +96,6 @@ extern int cfg80211_dev_rename(struct cf
void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby);
+void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
+
#endif /* __NET_WIRELESS_CORE_H */
--- everything.orig/include/net/wireless.h 2008-09-19 13:10:09.000000000 +0200
+++ everything/include/net/wireless.h 2008-09-22 14:40:06.000000000 +0200
@@ -191,6 +191,9 @@ struct wiphy {
/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
u16 interface_modes;
+ int bss_priv_size;
+ u8 max_scan_ssids;
+
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered
--- everything.orig/include/net/mac80211.h 2008-09-19 13:12:19.000000000 +0200
+++ everything/include/net/mac80211.h 2008-09-22 13:53:43.000000000 +0200
@@ -1217,7 +1217,8 @@ struct ieee80211_ops {
void (*update_tkip_key)(struct ieee80211_hw *hw,
struct ieee80211_key_conf *conf, const u8 *address,
u32 iv32, u16 *phase1key);
- int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
+ int (*hw_scan)(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
--- everything.orig/drivers/net/wireless/iwlwifi/iwl-agn.c 2008-09-19 13:13:12.000000000 +0200
+++ everything/drivers/net/wireless/iwlwifi/iwl-agn.c 2008-09-19 13:29:47.000000000 +0200
@@ -3187,11 +3187,19 @@ static void iwl4965_bss_info_changed(str
}
-static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
+static int iwl_mac_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
{
int ret;
unsigned long flags;
struct iwl_priv *priv = hw->priv;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ if (req->n_ssids) {
+ ssid = req->ssids[0].ssid;
+ ssid_len = req->ssids[0].ssid_len;
+ }
IWL_DEBUG_MAC80211("enter\n");
@@ -3226,7 +3234,7 @@ static int iwl_mac_hw_scan(struct ieee80
}
if (ssid_len) {
priv->one_direct_scan = 1;
- priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
+ priv->direct_ssid_len = ssid_len;
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
} else {
priv->one_direct_scan = 0;
--- everything.orig/drivers/net/wireless/iwlwifi/iwl-core.c 2008-09-19 13:17:56.000000000 +0200
+++ everything/drivers/net/wireless/iwlwifi/iwl-core.c 2008-09-19 13:18:13.000000000 +0200
@@ -862,6 +862,7 @@ int iwl_setup_mac(struct iwl_priv *priv)
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC);
+ hw->wiphy->max_scan_ssids = 1;
/* Default value; 4 EDCA QOS priorities */
hw->queues = 4;
/* queues to support 11n aggregation */
--- everything.orig/drivers/net/wireless/iwlwifi/iwl3945-base.c 2008-09-19 13:13:11.000000000 +0200
+++ everything/drivers/net/wireless/iwlwifi/iwl3945-base.c 2008-09-19 13:30:16.000000000 +0200
@@ -6993,11 +6993,19 @@ static void iwl3945_bss_info_changed(str
}
-static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
+static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
{
int rc = 0;
unsigned long flags;
struct iwl3945_priv *priv = hw->priv;
+ size_t len = 0;
+ u8 *ssid = NULL;
+
+ if (req->n_ssids) {
+ len = req->ssids[0].ssid_len;
+ ssid = req->ssids[0].ssid;
+ }
IWL_DEBUG_MAC80211("enter\n");
@@ -7034,9 +7042,8 @@ static int iwl3945_mac_hw_scan(struct ie
iwl3945_escape_essid(ssid, len), (int)len);
priv->one_direct_scan = 1;
- priv->direct_ssid_len = (u8)
- min((u8) len, (u8) IW_ESSID_MAX_SIZE);
- memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
+ priv->direct_ssid_len = len;
+ memcpy(priv->direct_ssid, ssid, len);
} else
priv->one_direct_scan = 0;
@@ -7926,6 +7933,8 @@ static int iwl3945_pci_probe(struct pci_
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC);
+ hw->wiphy->max_scan_ssids = 1;
+
/* 4 EDCA QOS priorities */
hw->queues = 4;
--- everything.orig/drivers/net/wireless/at76_usb.c 2008-09-19 13:20:34.000000000 +0200
+++ everything/drivers/net/wireless/at76_usb.c 2008-09-19 14:16:41.000000000 +0200
@@ -2015,14 +2015,16 @@ exit:
return;
}
-static int at76_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
+static int at76_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
{
struct at76_priv *priv = hw->priv;
struct at76_req_scan scan;
int ret;
+ u8 *ssid = NULL;
+ int len = 0;
at76_dbg(DBG_MAC80211, "%s():", __func__);
- at76_dbg_dump(DBG_MAC80211, ssid, len, "ssid %zd bytes:", len);
mutex_lock(&priv->mtx);
@@ -2030,8 +2032,14 @@ static int at76_hw_scan(struct ieee80211
memset(&scan, 0, sizeof(struct at76_req_scan));
memset(scan.bssid, 0xFF, ETH_ALEN);
- scan.scan_type = SCAN_TYPE_ACTIVE;
- if (priv->essid_size > 0) {
+ if (req->n_ssids) {
+ scan.scan_type = SCAN_TYPE_ACTIVE;
+ ssid = req->ssids[0].ssid;
+ len = req->ssids[0].ssid_len;
+ } else {
+ scan.scan_type = SCAN_TYPE_PASSIVE;
+ }
+ if (len) {
memcpy(scan.essid, ssid, len);
scan.essid_size = len;
}
@@ -2548,6 +2556,7 @@ static int at76_init_new_device(struct a
IEEE80211_HW_SIGNAL_UNSPEC;
priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+ priv->hw->wiphy->max_scan_ssids = 1;
SET_IEEE80211_DEV(priv->hw, &interface->dev);
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
--- everything.orig/include/linux/ieee80211.h 2008-09-19 22:31:13.000000000 +0200
+++ everything/include/linux/ieee80211.h 2008-09-19 22:31:29.000000000 +0200
@@ -101,6 +101,7 @@
#define IEEE80211_QOS_CTL_LEN 2
#define IEEE80211_QOS_CTL_TID_MASK 0x000F
#define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
+#define IEEE80211_MESH_CONFIG_LEN 19
struct ieee80211_hdr {
__le16 frame_control;
--- everything.orig/net/mac80211/mesh.c 2008-09-19 22:31:52.000000000 +0200
+++ everything/net/mac80211/mesh.c 2008-09-19 22:32:12.000000000 +0200
@@ -238,7 +238,7 @@ void mesh_mgmt_ies_add(struct sk_buff *s
pos = skb_put(skb, 21);
*pos++ = WLAN_EID_MESH_CONFIG;
- *pos++ = MESH_CFG_LEN;
+ *pos++ = IEEE80211_MESH_CONFIG_LEN;
/* Version */
*pos++ = 1;
--- everything.orig/net/mac80211/mesh.h 2008-09-19 22:31:37.000000000 +0200
+++ everything/net/mac80211/mesh.h 2008-09-19 22:31:47.000000000 +0200
@@ -144,9 +144,6 @@ struct mesh_rmc {
};
-/* Mesh IEs constants */
-#define MESH_CFG_LEN 19
-
/*
* MESH_CFG_COMP_LEN Includes:
* - Active path selection protocol ID.
--
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