Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 122 insertions, 0 deletions

diff --git a/include/net/lib80211.h b/include/net/lib80211.h
new file mode 100644
index 000000000..8b47d3a51
--- /dev/null
+++ b/include/net/lib80211.h
@@ -0,0 +1,122 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * lib80211.h -- common bits for IEEE802.11 wireless drivers
+ *
+ * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
+ *
+ * Some bits copied from old ieee80211 component, w/ original copyright
+ * notices below:
+ *
+ * Original code based on Host AP (software wireless LAN access point) driver
+ * for Intersil Prism2/2.5/3.
+ *
+ * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
+ * <j@w1.fi>
+ * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
+ *
+ * Adaption to a generic IEEE 802.11 stack by James Ketrenos
+ * <jketreno@linux.intel.com>
+ *
+ * Copyright (c) 2004, Intel Corporation
+ *
+ */
+
+#ifndef LIB80211_H
+#define LIB80211_H
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/atomic.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/ieee80211.h>
+#include <linux/timer.h>
+#include <linux/seq_file.h>
+
+#define NUM_WEP_KEYS	4
+
+enum {
+	IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),
+};
+
+struct module;
+
+struct lib80211_crypto_ops {
+	const char *name;
+	struct list_head list;
+
+	/* init new crypto context (e.g., allocate private data space,
+	 * select IV, etc.); returns NULL on failure or pointer to allocated
+	 * private data on success */
+	void *(*init) (int keyidx);
+
+	/* deinitialize crypto context and free allocated private data */
+	void (*deinit) (void *priv);
+
+	/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
+	 * value from decrypt_mpdu is passed as the keyidx value for
+	 * decrypt_msdu. skb must have enough head and tail room for the
+	 * encryption; if not, error will be returned; these functions are
+	 * called for all MPDUs (i.e., fragments).
+	 */
+	int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
+	int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
+
+	/* These functions are called for full MSDUs, i.e. full frames.
+	 * These can be NULL if full MSDU operations are not needed. */
+	int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
+	int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
+			     void *priv);
+
+	int (*set_key) (void *key, int len, u8 * seq, void *priv);
+	int (*get_key) (void *key, int len, u8 * seq, void *priv);
+
+	/* procfs handler for printing out key information and possible
+	 * statistics */
+	void (*print_stats) (struct seq_file *m, void *priv);
+
+	/* Crypto specific flag get/set for configuration settings */
+	unsigned long (*get_flags) (void *priv);
+	unsigned long (*set_flags) (unsigned long flags, void *priv);
+
+	/* maximum number of bytes added by encryption; encrypt buf is
+	 * allocated with extra_prefix_len bytes, copy of in_buf, and
+	 * extra_postfix_len; encrypt need not use all this space, but
+	 * the result must start at the beginning of the buffer and correct
+	 * length must be returned */
+	int extra_mpdu_prefix_len, extra_mpdu_postfix_len;
+	int extra_msdu_prefix_len, extra_msdu_postfix_len;
+
+	struct module *owner;
+};
+
+struct lib80211_crypt_data {
+	struct list_head list;	/* delayed deletion list */
+	struct lib80211_crypto_ops *ops;
+	void *priv;
+	atomic_t refcnt;
+};
+
+struct lib80211_crypt_info {
+	char *name;
+	/* Most clients will already have a lock,
+	   so just point to that. */
+	spinlock_t *lock;
+
+	struct lib80211_crypt_data *crypt[NUM_WEP_KEYS];
+	int tx_keyidx;		/* default TX key index (crypt[tx_keyidx]) */
+	struct list_head crypt_deinit_list;
+	struct timer_list crypt_deinit_timer;
+	int crypt_quiesced;
+};
+
+int lib80211_crypt_info_init(struct lib80211_crypt_info *info, char *name,
+                                spinlock_t *lock);
+void lib80211_crypt_info_free(struct lib80211_crypt_info *info);
+int lib80211_register_crypto_ops(struct lib80211_crypto_ops *ops);
+int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops);
+struct lib80211_crypto_ops *lib80211_get_crypto_ops(const char *name);
+void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
+				    struct lib80211_crypt_data **crypt);
+
+#endif /* LIB80211_H */