change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/fs/orangefs/xattr.c
..
..
@@ -1,6 +1,7 @@
1
1
 // SPDX-License-Identifier: GPL-2.0
2
2
 /*
3
3
  * (C) 2001 Clemson University and The University of Chicago
4
+ * Copyright 2018 Omnibond Systems, L.L.C.
4
5
  *
5
6
  * See COPYING in top-level directory.
6
7
  */
..
..
@@ -14,7 +15,7 @@
14
15
 #include "orangefs-bufmap.h"
15
16
 #include <linux/posix_acl_xattr.h>
16
17
 #include <linux/xattr.h>
17
-
18
+#include <linux/hashtable.h>
18
19
 
19
20
 #define SYSTEM_ORANGEFS_KEY "system.pvfs2."
20
21
 #define SYSTEM_ORANGEFS_KEY_LEN 13
..
..
@@ -50,6 +51,35 @@
50
51
 	return internal_flag;
51
52
 }
52
53
 
54
+static unsigned int xattr_key(const char *key)
55
+{
56
+	unsigned int i = 0;
57
+	while (key)
58
+		i += *key++;
59
+	return i % 16;
60
+}
61
+
62
+static struct orangefs_cached_xattr *find_cached_xattr(struct inode *inode,
63
+    const char *key)
64
+{
65
+	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
66
+	struct orangefs_cached_xattr *cx;
67
+	struct hlist_head *h;
68
+	struct hlist_node *tmp;
69
+	h = &orangefs_inode->xattr_cache[xattr_key(key)];
70
+	if (hlist_empty(h))
71
+		return NULL;
72
+	hlist_for_each_entry_safe(cx, tmp, h, node) {
73
+/*		if (!time_before(jiffies, cx->timeout)) {
74
+			hlist_del(&cx->node);
75
+			kfree(cx);
76
+			continue;
77
+		}*/
78
+		if (!strcmp(cx->key, key))
79
+			return cx;
80
+	}
81
+	return NULL;
82
+}
53
83
 
54
84
 /*
55
85
  * Tries to get a specified key's attributes of a given
..
..
@@ -65,6 +95,7 @@
65
95
 {
66
96
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
67
97
 	struct orangefs_kernel_op_s *new_op = NULL;
98
+	struct orangefs_cached_xattr *cx;
68
99
 	ssize_t ret = -ENOMEM;
69
100
 	ssize_t length = 0;
70
101
 	int fsuid;
..
..
@@ -93,6 +124,27 @@
93
124
 
94
125
 	down_read(&orangefs_inode->xattr_sem);
95
126
 
127
+	cx = find_cached_xattr(inode, name);
128
+	if (cx && time_before(jiffies, cx->timeout)) {
129
+		if (cx->length == -1) {
130
+			ret = -ENODATA;
131
+			goto out_unlock;
132
+		} else {
133
+			if (size == 0) {
134
+				ret = cx->length;
135
+				goto out_unlock;
136
+			}
137
+			if (cx->length > size) {
138
+				ret = -ERANGE;
139
+				goto out_unlock;
140
+			}
141
+			memcpy(buffer, cx->val, cx->length);
142
+			memset(buffer + cx->length, 0, size - cx->length);
143
+			ret = cx->length;
144
+			goto out_unlock;
145
+		}
146
+	}
147
+
96
148
 	new_op = op_alloc(ORANGEFS_VFS_OP_GETXATTR);
97
149
 	if (!new_op)
98
150
 		goto out_unlock;
..
..
@@ -117,6 +169,15 @@
117
169
 				     " does not exist!\n",
118
170
 				     get_khandle_from_ino(inode),
119
171
 				     (char *)new_op->upcall.req.getxattr.key);
172
+			cx = kmalloc(sizeof *cx, GFP_KERNEL);
173
+			if (cx) {
174
+				strcpy(cx->key, name);
175
+				cx->length = -1;
176
+				cx->timeout = jiffies +
177
+				    orangefs_getattr_timeout_msecs*HZ/1000;
178
+				hash_add(orangefs_inode->xattr_cache, &cx->node,
179
+				    xattr_key(cx->key));
180
+			}
120
181
 		}
121
182
 		goto out_release_op;
122
183
 	}
..
..
@@ -156,6 +217,23 @@
156
217
 
157
218
 	ret = length;
158
219
 
220
+	if (cx) {
221
+		strcpy(cx->key, name);
222
+		memcpy(cx->val, buffer, length);
223
+		cx->length = length;
224
+		cx->timeout = jiffies + HZ;
225
+	} else {
226
+		cx = kmalloc(sizeof *cx, GFP_KERNEL);
227
+		if (cx) {
228
+			strcpy(cx->key, name);
229
+			memcpy(cx->val, buffer, length);
230
+			cx->length = length;
231
+			cx->timeout = jiffies + HZ;
232
+			hash_add(orangefs_inode->xattr_cache, &cx->node,
233
+			    xattr_key(cx->key));
234
+		}
235
+	}
236
+
159
237
 out_release_op:
160
238
 	op_release(new_op);
161
239
 out_unlock:
..
..
@@ -168,6 +246,9 @@
168
246
 {
169
247
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
170
248
 	struct orangefs_kernel_op_s *new_op = NULL;
249
+	struct orangefs_cached_xattr *cx;
250
+	struct hlist_head *h;
251
+	struct hlist_node *tmp;
171
252
 	int ret = -ENOMEM;
172
253
 
173
254
 	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN)
..
..
@@ -209,6 +290,16 @@
209
290
 		     "orangefs_inode_removexattr: returning %d\n", ret);
210
291
 
211
292
 	op_release(new_op);
293
+
294
+	h = &orangefs_inode->xattr_cache[xattr_key(name)];
295
+	hlist_for_each_entry_safe(cx, tmp, h, node) {
296
+		if (!strcmp(cx->key, name)) {
297
+			hlist_del(&cx->node);
298
+			kfree(cx);
299
+			break;
300
+		}
301
+	}
302
+
212
303
 out_unlock:
213
304
 	up_write(&orangefs_inode->xattr_sem);
214
305
 	return ret;
..
..
@@ -226,6 +317,9 @@
226
317
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
227
318
 	struct orangefs_kernel_op_s *new_op;
228
319
 	int internal_flag = 0;
320
+	struct orangefs_cached_xattr *cx;
321
+	struct hlist_head *h;
322
+	struct hlist_node *tmp;
229
323
 	int ret = -ENOMEM;
230
324
 
231
325
 	gossip_debug(GOSSIP_XATTR_DEBUG,
..
..
@@ -287,6 +381,16 @@
287
381
 
288
382
 	/* when request is serviced properly, free req op struct */
289
383
 	op_release(new_op);
384
+
385
+	h = &orangefs_inode->xattr_cache[xattr_key(name)];
386
+	hlist_for_each_entry_safe(cx, tmp, h, node) {
387
+		if (!strcmp(cx->key, name)) {
388
+			hlist_del(&cx->node);
389
+			kfree(cx);
390
+			break;
391
+		}
392
+	}
393
+
290
394
 out_unlock:
291
395
 	up_write(&orangefs_inode->xattr_sem);
292
396
 	return ret;
..
..
@@ -437,7 +541,8 @@
437
541
 				      struct inode *inode,
438
542
 				      const char *name,
439
543
 				      void *buffer,
440
-				      size_t size)
544
+				      size_t size,
545
+				      int flags)
441
546
 {
442
547
 	return orangefs_inode_getxattr(inode, name, buffer, size);
443
548