修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/sched/cls_cgroup.c
..
..
@@ -1,10 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  * net/sched/cls_cgroup.c	Control Group Classifier
3
- *
4
- *		This program is free software; you can redistribute it and/or
5
- *		modify it under the terms of the GNU General Public License
6
- *		as published by the Free Software Foundation; either version
7
- *		2 of the License, or (at your option) any later version.
8
4
  *
9
5
  * Authors:	Thomas Graf <tgraf@suug.ch>
10
6
  */
..
..
@@ -32,6 +28,8 @@
32
28
 	struct cls_cgroup_head *head = rcu_dereference_bh(tp->root);
33
29
 	u32 classid = task_get_classid(skb);
34
30
 
31
+	if (unlikely(!head))
32
+		return -1;
35
33
 	if (!classid)
36
34
 		return -1;
37
35
 	if (!tcf_em_tree_match(skb, &head->ematches, NULL))
..
..
@@ -78,7 +76,7 @@
78
76
 static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
79
77
 			     struct tcf_proto *tp, unsigned long base,
80
78
 			     u32 handle, struct nlattr **tca,
81
-			     void **arg, bool ovr,
79
+			     void **arg, bool ovr, bool rtnl_held,
82
80
 			     struct netlink_ext_ack *extack)
83
81
 {
84
82
 	struct nlattr *tb[TCA_CGROUP_MAX + 1];
..
..
@@ -99,18 +97,19 @@
99
97
 	if (!new)
100
98
 		return -ENOBUFS;
101
99
 
102
-	err = tcf_exts_init(&new->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
100
+	err = tcf_exts_init(&new->exts, net, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
103
101
 	if (err < 0)
104
102
 		goto errout;
105
103
 	new->handle = handle;
106
104
 	new->tp = tp;
107
-	err = nla_parse_nested(tb, TCA_CGROUP_MAX, tca[TCA_OPTIONS],
108
-			       cgroup_policy, NULL);
105
+	err = nla_parse_nested_deprecated(tb, TCA_CGROUP_MAX,
106
+					  tca[TCA_OPTIONS], cgroup_policy,
107
+					  NULL);
109
108
 	if (err < 0)
110
109
 		goto errout;
111
110
 
112
111
 	err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &new->exts, ovr,
113
-				extack);
112
+				true, extack);
114
113
 	if (err < 0)
115
114
 		goto errout;
116
115
 
..
..
@@ -130,7 +129,7 @@
130
129
 	return err;
131
130
 }
132
131
 
133
-static void cls_cgroup_destroy(struct tcf_proto *tp,
132
+static void cls_cgroup_destroy(struct tcf_proto *tp, bool rtnl_held,
134
133
 			       struct netlink_ext_ack *extack)
135
134
 {
136
135
 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
..
..
@@ -145,18 +144,21 @@
145
144
 }
146
145
 
147
146
 static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last,
148
-			     struct netlink_ext_ack *extack)
147
+			     bool rtnl_held, struct netlink_ext_ack *extack)
149
148
 {
150
149
 	return -EOPNOTSUPP;
151
150
 }
152
151
 
153
-static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg)
152
+static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg,
153
+			    bool rtnl_held)
154
154
 {
155
155
 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
156
156
 
157
157
 	if (arg->count < arg->skip)
158
158
 		goto skip;
159
159
 
160
+	if (!head)
161
+		return;
160
162
 	if (arg->fn(tp, head, arg) < 0) {
161
163
 		arg->stop = 1;
162
164
 		return;
..
..
@@ -166,14 +168,14 @@
166
168
 }
167
169
 
168
170
 static int cls_cgroup_dump(struct net *net, struct tcf_proto *tp, void *fh,
169
-			   struct sk_buff *skb, struct tcmsg *t)
171
+			   struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
170
172
 {
171
173
 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
172
174
 	struct nlattr *nest;
173
175
 
174
176
 	t->tcm_handle = head->handle;
175
177
 
176
-	nest = nla_nest_start(skb, TCA_OPTIONS);
178
+	nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
177
179
 	if (nest == NULL)
178
180
 		goto nla_put_failure;
179
181