1 files changed, 0 insertions, 366 deletions
diff --git a/drivers/staging/uwb/ie.c b/drivers/staging/uwb/ie.c
deleted file mode 100644
index b11678dd0380..000000000000
--- a/drivers/staging/uwb/ie.c
+++ /dev/null
@@ -1,366 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Ultra Wide Band
- * Information Element Handling
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * FIXME: docs
- */
-
-#include <linux/slab.h>
-#include <linux/export.h>
-#include "uwb-internal.h"
-
-/**
- * uwb_ie_next - get the next IE in a buffer
- * @ptr: start of the buffer containing the IE data
- * @len: length of the buffer
- *
- * Both @ptr and @len are updated so subsequent calls to uwb_ie_next()
- * will get the next IE.
- *
- * NULL is returned (and @ptr and @len will not be updated) if there
- * are no more IEs in the buffer or the buffer is too short.
- */
-struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len)
-{
-	struct uwb_ie_hdr *hdr;
-	size_t ie_len;
-
-	if (*len < sizeof(struct uwb_ie_hdr))
-		return NULL;
-
-	hdr = *ptr;
-	ie_len = sizeof(struct uwb_ie_hdr) + hdr->length;
-
-	if (*len < ie_len)
-		return NULL;
-
-	*ptr += ie_len;
-	*len -= ie_len;
-
-	return hdr;
-}
-EXPORT_SYMBOL_GPL(uwb_ie_next);
-
-/**
- * uwb_ie_dump_hex - print IEs to a character buffer
- * @ies: the IEs to print.
- * @len: length of all the IEs.
- * @buf: the destination buffer.
- * @size: size of @buf.
- *
- * Returns the number of characters written.
- */
-int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len,
-		    char *buf, size_t size)
-{
-	void *ptr;
-	const struct uwb_ie_hdr *ie;
-	int r = 0;
-	u8 *d;
-
-	ptr = (void *)ies;
-	for (;;) {
-		ie = uwb_ie_next(&ptr, &len);
-		if (!ie)
-			break;
-
-		r += scnprintf(buf + r, size - r, "%02x %02x",
-			       (unsigned)ie->element_id,
-			       (unsigned)ie->length);
-		d = (uint8_t *)ie + sizeof(struct uwb_ie_hdr);
-		while (d != ptr && r < size)
-			r += scnprintf(buf + r, size - r, " %02x", (unsigned)*d++);
-		if (r < size)
-			buf[r++] = '\n';
-	};
-
-	return r;
-}
-
-/**
- * Get the IEs that a radio controller is sending in its beacon
- *
- * @uwb_rc:  UWB Radio Controller
- * @returns: Size read from the system
- *
- * We don't need to lock the uwb_rc's mutex because we don't modify
- * anything. Once done with the iedata buffer, call
- * uwb_rc_ie_release(iedata). Don't call kfree on it.
- */
-static
-ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
-{
-	ssize_t result;
-	struct device *dev = &uwb_rc->uwb_dev.dev;
-	struct uwb_rccb *cmd = NULL;
-	struct uwb_rceb *reply = NULL;
-	struct uwb_rc_evt_get_ie *get_ie;
-
-	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
-	if (cmd == NULL)
-		return -ENOMEM;
-
-	cmd->bCommandType = UWB_RC_CET_GENERAL;
-	cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE);
-	result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd),
-			     UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE,
-			     &reply);
-	kfree(cmd);
-	if (result < 0)
-		return result;
-
-	get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb);
-	if (result < sizeof(*get_ie)) {
-		dev_err(dev, "not enough data returned for decoding GET IE "
-			"(%zu bytes received vs %zu needed)\n",
-			result, sizeof(*get_ie));
-		return -EINVAL;
-	} else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) {
-		dev_err(dev, "not enough data returned for decoding GET IE "
-			"payload (%zu bytes received vs %zu needed)\n", result,
-			sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength));
-		return -EINVAL;
-	}
-
-	*pget_ie = get_ie;
-	return result;
-}
-
-
-/**
- * Replace all IEs currently being transmitted by a device
- *
- * @cmd:    pointer to the SET-IE command with the IEs to set
- * @size:   size of @buf
- */
-int uwb_rc_set_ie(struct uwb_rc *rc, struct uwb_rc_cmd_set_ie *cmd)
-{
-	int result;
-	struct device *dev = &rc->uwb_dev.dev;
-	struct uwb_rc_evt_set_ie reply;
-
-	reply.rceb.bEventType = UWB_RC_CET_GENERAL;
-	reply.rceb.wEvent = UWB_RC_CMD_SET_IE;
-	result = uwb_rc_cmd(rc, "SET-IE", &cmd->rccb,
-			    sizeof(*cmd) + le16_to_cpu(cmd->wIELength),
-			    &reply.rceb, sizeof(reply));
-	if (result < 0)
-		goto error_cmd;
-	else if (result != sizeof(reply)) {
-		dev_err(dev, "SET-IE: not enough data to decode reply "
-			"(%d bytes received vs %zu needed)\n",
-			result, sizeof(reply));
-		result = -EIO;
-	} else if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
-		dev_err(dev, "SET-IE: command execution failed: %s (%d)\n",
-			uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
-		result = -EIO;
-	} else
-		result = 0;
-error_cmd:
-	return result;
-}
-
-/* Cleanup the whole IE management subsystem */
-void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
-{
-	mutex_init(&uwb_rc->ies_mutex);
-}
-
-
-/**
- * uwb_rc_ie_setup - setup a radio controller's IE manager
- * @uwb_rc: the radio controller.
- *
- * The current set of IEs are obtained from the hardware with a GET-IE
- * command (since the radio controller is not yet beaconing this will
- * be just the hardware's MAC and PHY Capability IEs).
- *
- * Returns 0 on success; -ve on an error.
- */
-int uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
-{
-	struct uwb_rc_evt_get_ie *ie_info = NULL;
-	int capacity;
-
-	capacity = uwb_rc_get_ie(uwb_rc, &ie_info);
-	if (capacity < 0)
-		return capacity;
-
-	mutex_lock(&uwb_rc->ies_mutex);
-
-	uwb_rc->ies = (struct uwb_rc_cmd_set_ie *)ie_info;
-	uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL;
-	uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE);
-	uwb_rc->ies_capacity = capacity;
-
-	mutex_unlock(&uwb_rc->ies_mutex);
-
-	return 0;
-}
-
-
-/* Cleanup the whole IE management subsystem */
-void uwb_rc_ie_release(struct uwb_rc *uwb_rc)
-{
-	kfree(uwb_rc->ies);
-	uwb_rc->ies = NULL;
-	uwb_rc->ies_capacity = 0;
-}
-
-
-static int uwb_rc_ie_add_one(struct uwb_rc *rc, const struct uwb_ie_hdr *new_ie)
-{
-	struct uwb_rc_cmd_set_ie *new_ies;
-	void *ptr, *prev_ie;
-	struct uwb_ie_hdr *ie;
-	size_t length, new_ie_len, new_capacity, size, prev_size;
-
-	length = le16_to_cpu(rc->ies->wIELength);
-	new_ie_len = sizeof(struct uwb_ie_hdr) + new_ie->length;
-	new_capacity = sizeof(struct uwb_rc_cmd_set_ie) + length + new_ie_len;
-
-	if (new_capacity > rc->ies_capacity) {
-		new_ies = krealloc(rc->ies, new_capacity, GFP_KERNEL);
-		if (!new_ies)
-			return -ENOMEM;
-		rc->ies = new_ies;
-	}
-
-	ptr = rc->ies->IEData;
-	size = length;
-	for (;;) {
-		prev_ie = ptr;
-		prev_size = size;
-		ie = uwb_ie_next(&ptr, &size);
-		if (!ie || ie->element_id > new_ie->element_id)
-			break;
-	}
-
-	memmove(prev_ie + new_ie_len, prev_ie, prev_size);
-	memcpy(prev_ie, new_ie, new_ie_len);
-	rc->ies->wIELength = cpu_to_le16(length + new_ie_len);
-
-	return 0;
-}
-
-/**
- * uwb_rc_ie_add - add new IEs to the radio controller's beacon
- * @uwb_rc: the radio controller.
- * @ies: the buffer containing the new IE or IEs to be added to
- *       the device's beacon.
- * @size: length of all the IEs.
- *
- * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
- * after the device sent the first beacon that includes the IEs specified
- * in the SET IE command. We thus cannot send this command if the device is
- * not beaconing. Instead, a SET IE command will be sent later right after
- * we start beaconing.
- *
- * Setting an IE on the device will overwrite all current IEs in device. So
- * we take the current IEs being transmitted by the device, insert the
- * new one, and call SET IE with all the IEs needed.
- *
- * Returns 0 on success; or -ENOMEM.
- */
-int uwb_rc_ie_add(struct uwb_rc *uwb_rc,
-		  const struct uwb_ie_hdr *ies, size_t size)
-{
-	int result = 0;
-	void *ptr;
-	const struct uwb_ie_hdr *ie;
-
-	mutex_lock(&uwb_rc->ies_mutex);
-
-	ptr = (void *)ies;
-	for (;;) {
-		ie = uwb_ie_next(&ptr, &size);
-		if (!ie)
-			break;
-
-		result = uwb_rc_ie_add_one(uwb_rc, ie);
-		if (result < 0)
-			break;
-	}
-	if (result >= 0) {
-		if (size == 0) {
-			if (uwb_rc->beaconing != -1)
-				result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
-		} else
-			result = -EINVAL;
-	}
-
-	mutex_unlock(&uwb_rc->ies_mutex);
-
-	return result;
-}
-EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
-
-
-/*
- * Remove an IE from internal cache
- *
- * We are dealing with our internal IE cache so no need to verify that the
- * IEs are valid (it has been done already).
- *
- * Should be called with ies_mutex held
- *
- * We do not break out once an IE is found in the cache. It is currently
- * possible to have more than one IE with the same ID included in the
- * beacon. We don't reallocate, we just mark the size smaller.
- */
-static
-void uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
-{
-	struct uwb_ie_hdr *ie;
-	size_t len = le16_to_cpu(uwb_rc->ies->wIELength);
-	void *ptr;
-	size_t size;
-
-	ptr = uwb_rc->ies->IEData;
-	size = len;
-	for (;;) {
-		ie = uwb_ie_next(&ptr, &size);
-		if (!ie)
-			break;
-		if (ie->element_id == to_remove) {
-			len -= sizeof(struct uwb_ie_hdr) + ie->length;
-			memmove(ie, ptr, size);
-			ptr = ie;
-		}
-	}
-	uwb_rc->ies->wIELength = cpu_to_le16(len);
-}
-
-
-/**
- * uwb_rc_ie_rm - remove an IE from the radio controller's beacon
- * @uwb_rc: the radio controller.
- * @element_id: the element ID of the IE to remove.
- *
- * Only IEs previously added with uwb_rc_ie_add() may be removed.
- *
- * Returns 0 on success; or -ve the SET-IE command to the radio
- * controller failed.
- */
-int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id)
-{
-	int result = 0;
-
-	mutex_lock(&uwb_rc->ies_mutex);
-
-	uwb_rc_ie_cache_rm(uwb_rc, element_id);
-
-	if (uwb_rc->beaconing != -1)
-		result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
-
-	mutex_unlock(&uwb_rc->ies_mutex);
-
-	return result;
-}
-EXPORT_SYMBOL_GPL(uwb_rc_ie_rm);