add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/net/dsa/switch.c
..
..
@@ -1,17 +1,15 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  * Handling of a single switch chip, part of a switch fabric
3
4
  *
4
5
  * Copyright (c) 2017 Savoir-faire Linux Inc.
5
6
  *	Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
9
- * the Free Software Foundation; either version 2 of the License, or
10
- * (at your option) any later version.
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7
  */
12
8
 
9
+#include <linux/if_bridge.h>
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10
 #include <linux/netdevice.h>
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11
 #include <linux/notifier.h>
12
+#include <linux/if_vlan.h>
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13
 #include <net/switchdev.h>
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14
 
17
15
 #include "dsa_priv.h"
..
..
@@ -22,7 +20,7 @@
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20
 	int i;
23
21
 
24
22
 	for (i = 0; i < ds->num_ports; ++i) {
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-		struct dsa_port *dp = &ds->ports[i];
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+		struct dsa_port *dp = dsa_to_port(ds, i);
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24
 
27
25
 		if (dp->ageing_time && dp->ageing_time < ageing_time)
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26
 			ageing_time = dp->ageing_time;
..
..
@@ -54,14 +52,53 @@
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52
 	return 0;
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53
 }
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54
 
55
+static bool dsa_switch_mtu_match(struct dsa_switch *ds, int port,
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+				 struct dsa_notifier_mtu_info *info)
57
+{
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+	if (ds->index == info->sw_index)
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+		return (port == info->port) || dsa_is_dsa_port(ds, port);
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+
61
+	if (!info->propagate_upstream)
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+		return false;
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+
64
+	if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port))
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+		return true;
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+
67
+	return false;
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+}
69
+
70
+static int dsa_switch_mtu(struct dsa_switch *ds,
71
+			  struct dsa_notifier_mtu_info *info)
72
+{
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+	int port, ret;
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+
75
+	if (!ds->ops->port_change_mtu)
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+		return -EOPNOTSUPP;
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+
78
+	for (port = 0; port < ds->num_ports; port++) {
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+		if (dsa_switch_mtu_match(ds, port, info)) {
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+			ret = ds->ops->port_change_mtu(ds, port, info->mtu);
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+			if (ret)
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+				return ret;
83
+		}
84
+	}
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+
86
+	return 0;
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+}
88
+
57
89
 static int dsa_switch_bridge_join(struct dsa_switch *ds,
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90
 				  struct dsa_notifier_bridge_info *info)
59
91
 {
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-	if (ds->index == info->sw_index && ds->ops->port_bridge_join)
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+	struct dsa_switch_tree *dst = ds->dst;
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+
94
+	if (dst->index == info->tree_index && ds->index == info->sw_index &&
95
+	    ds->ops->port_bridge_join)
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96
 		return ds->ops->port_bridge_join(ds, info->port, info->br);
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97
 
63
-	if (ds->index != info->sw_index && ds->ops->crosschip_bridge_join)
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-		return ds->ops->crosschip_bridge_join(ds, info->sw_index,
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+	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
99
+	    ds->ops->crosschip_bridge_join)
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+		return ds->ops->crosschip_bridge_join(ds, info->tree_index,
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+						      info->sw_index,
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102
 						      info->port, info->br);
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103
 
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104
 	return 0;
..
..
@@ -70,13 +107,52 @@
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107
 static int dsa_switch_bridge_leave(struct dsa_switch *ds,
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108
 				   struct dsa_notifier_bridge_info *info)
72
109
 {
73
-	if (ds->index == info->sw_index && ds->ops->port_bridge_leave)
110
+	bool unset_vlan_filtering = br_vlan_enabled(info->br);
111
+	struct dsa_switch_tree *dst = ds->dst;
112
+	int err, i;
113
+
114
+	if (dst->index == info->tree_index && ds->index == info->sw_index &&
115
+	    ds->ops->port_bridge_leave)
74
116
 		ds->ops->port_bridge_leave(ds, info->port, info->br);
75
117
 
76
-	if (ds->index != info->sw_index && ds->ops->crosschip_bridge_leave)
77
-		ds->ops->crosschip_bridge_leave(ds, info->sw_index, info->port,
118
+	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
119
+	    ds->ops->crosschip_bridge_leave)
120
+		ds->ops->crosschip_bridge_leave(ds, info->tree_index,
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+						info->sw_index, info->port,
78
122
 						info->br);
79
123
 
124
+	/* If the bridge was vlan_filtering, the bridge core doesn't trigger an
125
+	 * event for changing vlan_filtering setting upon slave ports leaving
126
+	 * it. That is a good thing, because that lets us handle it and also
127
+	 * handle the case where the switch's vlan_filtering setting is global
128
+	 * (not per port). When that happens, the correct moment to trigger the
129
+	 * vlan_filtering callback is only when the last port left this bridge.
130
+	 */
131
+	if (unset_vlan_filtering && ds->vlan_filtering_is_global) {
132
+		for (i = 0; i < ds->num_ports; i++) {
133
+			if (i == info->port)
134
+				continue;
135
+			if (dsa_to_port(ds, i)->bridge_dev == info->br) {
136
+				unset_vlan_filtering = false;
137
+				break;
138
+			}
139
+		}
140
+	}
141
+	if (unset_vlan_filtering) {
142
+		struct switchdev_trans trans;
143
+
144
+		trans.ph_prepare = true;
145
+		err = dsa_port_vlan_filtering(dsa_to_port(ds, info->port),
146
+					      false, &trans);
147
+		if (err && err != EOPNOTSUPP)
148
+			return err;
149
+
150
+		trans.ph_prepare = false;
151
+		err = dsa_port_vlan_filtering(dsa_to_port(ds, info->port),
152
+					      false, &trans);
153
+		if (err && err != EOPNOTSUPP)
154
+			return err;
155
+	}
80
156
 	return 0;
81
157
 }
82
158
 
..
..
@@ -102,57 +178,51 @@
102
178
 	return ds->ops->port_fdb_del(ds, port, info->addr, info->vid);
103
179
 }
104
180
 
105
-static int
106
-dsa_switch_mdb_prepare_bitmap(struct dsa_switch *ds,
107
-			      const struct switchdev_obj_port_mdb *mdb,
108
-			      const unsigned long *bitmap)
181
+static bool dsa_switch_mdb_match(struct dsa_switch *ds, int port,
182
+				 struct dsa_notifier_mdb_info *info)
183
+{
184
+	if (ds->index == info->sw_index && port == info->port)
185
+		return true;
186
+
187
+	if (dsa_is_dsa_port(ds, port))
188
+		return true;
189
+
190
+	return false;
191
+}
192
+
193
+static int dsa_switch_mdb_prepare(struct dsa_switch *ds,
194
+				  struct dsa_notifier_mdb_info *info)
109
195
 {
110
196
 	int port, err;
111
197
 
112
198
 	if (!ds->ops->port_mdb_prepare || !ds->ops->port_mdb_add)
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199
 		return -EOPNOTSUPP;
114
200
 
115
-	for_each_set_bit(port, bitmap, ds->num_ports) {
116
-		err = ds->ops->port_mdb_prepare(ds, port, mdb);
117
-		if (err)
118
-			return err;
201
+	for (port = 0; port < ds->num_ports; port++) {
202
+		if (dsa_switch_mdb_match(ds, port, info)) {
203
+			err = ds->ops->port_mdb_prepare(ds, port, info->mdb);
204
+			if (err)
205
+				return err;
206
+		}
119
207
 	}
120
208
 
121
209
 	return 0;
122
210
 }
123
211
 
124
-static void dsa_switch_mdb_add_bitmap(struct dsa_switch *ds,
125
-				      const struct switchdev_obj_port_mdb *mdb,
126
-				      const unsigned long *bitmap)
127
-{
128
-	int port;
129
-
130
-	if (!ds->ops->port_mdb_add)
131
-		return;
132
-
133
-	for_each_set_bit(port, bitmap, ds->num_ports)
134
-		ds->ops->port_mdb_add(ds, port, mdb);
135
-}
136
-
137
212
 static int dsa_switch_mdb_add(struct dsa_switch *ds,
138
213
 			      struct dsa_notifier_mdb_info *info)
139
214
 {
140
-	const struct switchdev_obj_port_mdb *mdb = info->mdb;
141
-	struct switchdev_trans *trans = info->trans;
142
215
 	int port;
143
216
 
144
-	/* Build a mask of Multicast group members */
145
-	bitmap_zero(ds->bitmap, ds->num_ports);
146
-	if (ds->index == info->sw_index)
147
-		set_bit(info->port, ds->bitmap);
217
+	if (switchdev_trans_ph_prepare(info->trans))
218
+		return dsa_switch_mdb_prepare(ds, info);
219
+
220
+	if (!ds->ops->port_mdb_add)
221
+		return 0;
222
+
148
223
 	for (port = 0; port < ds->num_ports; port++)
149
-		if (dsa_is_dsa_port(ds, port))
150
-			set_bit(port, ds->bitmap);
151
-
152
-	if (switchdev_trans_ph_prepare(trans))
153
-		return dsa_switch_mdb_prepare_bitmap(ds, mdb, ds->bitmap);
154
-
155
-	dsa_switch_mdb_add_bitmap(ds, mdb, ds->bitmap);
224
+		if (dsa_switch_mdb_match(ds, port, info))
225
+			ds->ops->port_mdb_add(ds, port, info->mdb);
156
226
 
157
227
 	return 0;
158
228
 }
..
..
@@ -160,66 +230,60 @@
160
230
 static int dsa_switch_mdb_del(struct dsa_switch *ds,
161
231
 			      struct dsa_notifier_mdb_info *info)
162
232
 {
163
-	const struct switchdev_obj_port_mdb *mdb = info->mdb;
164
-
165
233
 	if (!ds->ops->port_mdb_del)
166
234
 		return -EOPNOTSUPP;
167
235
 
168
236
 	if (ds->index == info->sw_index)
169
-		return ds->ops->port_mdb_del(ds, info->port, mdb);
237
+		return ds->ops->port_mdb_del(ds, info->port, info->mdb);
170
238
 
171
239
 	return 0;
172
240
 }
173
241
 
174
-static int
175
-dsa_switch_vlan_prepare_bitmap(struct dsa_switch *ds,
176
-			       const struct switchdev_obj_port_vlan *vlan,
177
-			       const unsigned long *bitmap)
242
+static bool dsa_switch_vlan_match(struct dsa_switch *ds, int port,
243
+				  struct dsa_notifier_vlan_info *info)
244
+{
245
+	if (ds->index == info->sw_index && port == info->port)
246
+		return true;
247
+
248
+	if (dsa_is_dsa_port(ds, port))
249
+		return true;
250
+
251
+	return false;
252
+}
253
+
254
+static int dsa_switch_vlan_prepare(struct dsa_switch *ds,
255
+				   struct dsa_notifier_vlan_info *info)
178
256
 {
179
257
 	int port, err;
180
258
 
181
259
 	if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
182
260
 		return -EOPNOTSUPP;
183
261
 
184
-	for_each_set_bit(port, bitmap, ds->num_ports) {
185
-		err = ds->ops->port_vlan_prepare(ds, port, vlan);
186
-		if (err)
187
-			return err;
262
+	for (port = 0; port < ds->num_ports; port++) {
263
+		if (dsa_switch_vlan_match(ds, port, info)) {
264
+			err = ds->ops->port_vlan_prepare(ds, port, info->vlan);
265
+			if (err)
266
+				return err;
267
+		}
188
268
 	}
189
269
 
190
270
 	return 0;
191
271
 }
192
272
 
193
-static void
194
-dsa_switch_vlan_add_bitmap(struct dsa_switch *ds,
195
-			   const struct switchdev_obj_port_vlan *vlan,
196
-			   const unsigned long *bitmap)
197
-{
198
-	int port;
199
-
200
-	for_each_set_bit(port, bitmap, ds->num_ports)
201
-		ds->ops->port_vlan_add(ds, port, vlan);
202
-}
203
-
204
273
 static int dsa_switch_vlan_add(struct dsa_switch *ds,
205
274
 			       struct dsa_notifier_vlan_info *info)
206
275
 {
207
-	const struct switchdev_obj_port_vlan *vlan = info->vlan;
208
-	struct switchdev_trans *trans = info->trans;
209
276
 	int port;
210
277
 
211
-	/* Build a mask of VLAN members */
212
-	bitmap_zero(ds->bitmap, ds->num_ports);
213
-	if (ds->index == info->sw_index)
214
-		set_bit(info->port, ds->bitmap);
278
+	if (switchdev_trans_ph_prepare(info->trans))
279
+		return dsa_switch_vlan_prepare(ds, info);
280
+
281
+	if (!ds->ops->port_vlan_add)
282
+		return 0;
283
+
215
284
 	for (port = 0; port < ds->num_ports; port++)
216
-		if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
217
-			set_bit(port, ds->bitmap);
218
-
219
-	if (switchdev_trans_ph_prepare(trans))
220
-		return dsa_switch_vlan_prepare_bitmap(ds, vlan, ds->bitmap);
221
-
222
-	dsa_switch_vlan_add_bitmap(ds, vlan, ds->bitmap);
285
+		if (dsa_switch_vlan_match(ds, port, info))
286
+			ds->ops->port_vlan_add(ds, port, info->vlan);
223
287
 
224
288
 	return 0;
225
289
 }
..
..
@@ -227,14 +291,15 @@
227
291
 static int dsa_switch_vlan_del(struct dsa_switch *ds,
228
292
 			       struct dsa_notifier_vlan_info *info)
229
293
 {
230
-	const struct switchdev_obj_port_vlan *vlan = info->vlan;
231
-
232
294
 	if (!ds->ops->port_vlan_del)
233
295
 		return -EOPNOTSUPP;
234
296
 
235
297
 	if (ds->index == info->sw_index)
236
-		return ds->ops->port_vlan_del(ds, info->port, vlan);
298
+		return ds->ops->port_vlan_del(ds, info->port, info->vlan);
237
299
 
300
+	/* Do not deprogram the DSA links as they may be used as conduit
301
+	 * for other VLAN members in the fabric.
302
+	 */
238
303
 	return 0;
239
304
 }
240
305
 
..
..
@@ -272,6 +337,9 @@
272
337
 	case DSA_NOTIFIER_VLAN_DEL:
273
338
 		err = dsa_switch_vlan_del(ds, info);
274
339
 		break;
340
+	case DSA_NOTIFIER_MTU:
341
+		err = dsa_switch_mtu(ds, info);
342
+		break;
275
343
 	default:
276
344
 		err = -EOPNOTSUPP;
277
345
 		break;