From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/sched/cls_cgroup.c | 32 +++++++++++++++++---------------
1 files changed, 17 insertions(+), 15 deletions(-)
diff --git a/kernel/net/sched/cls_cgroup.c b/kernel/net/sched/cls_cgroup.c
index 3bc01bd..fb88114 100644
--- a/kernel/net/sched/cls_cgroup.c
+++ b/kernel/net/sched/cls_cgroup.c
@@ -1,10 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* net/sched/cls_cgroup.c Control Group Classifier
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*
* Authors: Thomas Graf <tgraf@suug.ch>
*/
@@ -32,6 +28,8 @@
struct cls_cgroup_head *head = rcu_dereference_bh(tp->root);
u32 classid = task_get_classid(skb);
+ if (unlikely(!head))
+ return -1;
if (!classid)
return -1;
if (!tcf_em_tree_match(skb, &head->ematches, NULL))
@@ -78,7 +76,7 @@
static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
- void **arg, bool ovr,
+ void **arg, bool ovr, bool rtnl_held,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[TCA_CGROUP_MAX + 1];
@@ -99,18 +97,19 @@
if (!new)
return -ENOBUFS;
- err = tcf_exts_init(&new->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
+ err = tcf_exts_init(&new->exts, net, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
if (err < 0)
goto errout;
new->handle = handle;
new->tp = tp;
- err = nla_parse_nested(tb, TCA_CGROUP_MAX, tca[TCA_OPTIONS],
- cgroup_policy, NULL);
+ err = nla_parse_nested_deprecated(tb, TCA_CGROUP_MAX,
+ tca[TCA_OPTIONS], cgroup_policy,
+ NULL);
if (err < 0)
goto errout;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &new->exts, ovr,
- extack);
+ true, extack);
if (err < 0)
goto errout;
@@ -130,7 +129,7 @@
return err;
}
-static void cls_cgroup_destroy(struct tcf_proto *tp,
+static void cls_cgroup_destroy(struct tcf_proto *tp, bool rtnl_held,
struct netlink_ext_ack *extack)
{
struct cls_cgroup_head *head = rtnl_dereference(tp->root);
@@ -145,18 +144,21 @@
}
static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last,
- struct netlink_ext_ack *extack)
+ bool rtnl_held, struct netlink_ext_ack *extack)
{
return -EOPNOTSUPP;
}
-static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg)
+static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg,
+ bool rtnl_held)
{
struct cls_cgroup_head *head = rtnl_dereference(tp->root);
if (arg->count < arg->skip)
goto skip;
+ if (!head)
+ return;
if (arg->fn(tp, head, arg) < 0) {
arg->stop = 1;
return;
@@ -166,14 +168,14 @@
}
static int cls_cgroup_dump(struct net *net, struct tcf_proto *tp, void *fh,
- struct sk_buff *skb, struct tcmsg *t)
+ struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
{
struct cls_cgroup_head *head = rtnl_dereference(tp->root);
struct nlattr *nest;
t->tcm_handle = head->handle;
- nest = nla_nest_start(skb, TCA_OPTIONS);
+ nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
if (nest == NULL)
goto nla_put_failure;
--
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