cfg80211: handle SIOCGIWNAME

This patch moves the SIOCGIWNAME handling from mac80211 to cfg80211.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 61 insertions, 0 deletions

diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index cc547edb111f..9bc412c83430 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -6,4 +6,5 @@ obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o
 obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o
 
 cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o
+cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o
 cfg80211-$(CONFIG_NL80211) += nl80211.o
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
new file mode 100644
index 000000000000..a5db4551a31a
--- /dev/null
+++ b/net/wireless/wext-compat.c
@@ -0,0 +1,60 @@
+/*
+ * cfg80211 - wext compat code
+ *
+ * This is temporary code until all wireless functionality is migrated
+ * into cfg80211, when that happens all the exports here go away and
+ * we directly assign the wireless handlers of wireless interfaces.
+ *
+ * Copyright 2008       Johannes Berg <johannes@sipsolutions.net>
+ */
+
+#include <linux/wireless.h>
+#include <linux/nl80211.h>
+#include <net/iw_handler.h>
+#include <net/wireless.h>
+#include <net/cfg80211.h>
+#include "core.h"
+
+int cfg80211_wext_giwname(struct net_device *dev,
+                          struct iw_request_info *info,
+                          char *name, char *extra)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct ieee80211_supported_band *sband;
+        bool is_ht = false, is_a = false, is_b = false, is_g = false;
+
+        if (!wdev)
+                return -EOPNOTSUPP;
+
+        sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
+        if (sband) {
+                is_a = true;
+                is_ht |= sband->ht_cap.ht_supported;
+        }
+
+        sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
+        if (sband) {
+                int i;
+                /* Check for mandatory rates */
+                for (i = 0; i < sband->n_bitrates; i++) {
+                        if (sband->bitrates[i].bitrate == 10)
+                                is_b = true;
+                        if (sband->bitrates[i].bitrate == 60)
+                                is_g = true;
+                }
+                is_ht |= sband->ht_cap.ht_supported;
+        }
+
+        strcpy(name, "IEEE 802.11");
+        if (is_a)
+                strcat(name, "a");
+        if (is_b)
+                strcat(name, "b");
+        if (is_g)
+                strcat(name, "g");
+        if (is_ht)
+                strcat(name, "n");
+
+        return 0;
+}
+EXPORT_SYMBOL(cfg80211_wext_giwname);