[MAC80211]: split out some key functions from ieee80211.c

into a new file key.c which doesn't have much code right now but
it makes ieee80211.c easier to read.

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

1 files changed, 69 insertions, 0 deletions

diff --git a/net/mac80211/key.c b/net/mac80211/key.c
new file mode 100644
index 00000000000..b67558c2463
--- /dev/null
+++ b/net/mac80211/key.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "debugfs_key.h"
+#include "aes_ccm.h"
+
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+			const struct ieee80211_key *data)
+{
+	struct ieee80211_key_conf *conf;
+
+	conf = kmalloc(sizeof(*conf) + data->keylen, GFP_ATOMIC);
+	if (!conf)
+		return NULL;
+
+	conf->hw_key_idx = data->hw_key_idx;
+	conf->alg = data->alg;
+	conf->keylen = data->keylen;
+	conf->flags = 0;
+	if (data->force_sw_encrypt)
+		conf->flags |= IEEE80211_KEY_FORCE_SW_ENCRYPT;
+	conf->keyidx = data->keyidx;
+	if (data->default_tx_key)
+		conf->flags |= IEEE80211_KEY_DEFAULT_TX_KEY;
+	if (local->default_wep_only)
+		conf->flags |= IEEE80211_KEY_DEFAULT_WEP_ONLY;
+	memcpy(conf->key, data->key, data->keylen);
+
+	return conf;
+}
+
+struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
+					  int idx, size_t key_len, gfp_t flags)
+{
+	struct ieee80211_key *key;
+
+	key = kzalloc(sizeof(struct ieee80211_key) + key_len, flags);
+	if (!key)
+		return NULL;
+	kref_init(&key->kref);
+	return key;
+}
+
+static void ieee80211_key_release(struct kref *kref)
+{
+	struct ieee80211_key *key;
+
+	key = container_of(kref, struct ieee80211_key, kref);
+	if (key->alg == ALG_CCMP)
+		ieee80211_aes_key_free(key->u.ccmp.tfm);
+	ieee80211_debugfs_key_remove(key);
+	kfree(key);
+}
+
+void ieee80211_key_free(struct ieee80211_key *key)
+{
+	if (key)
+		kref_put(&key->kref, ieee80211_key_release);
+}