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/ipv6/ipv6_sockglue.c | 20 ++++++++------------
1 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/kernel/net/ipv6/ipv6_sockglue.c b/kernel/net/ipv6/ipv6_sockglue.c
index 2017257..7b4b457 100644
--- a/kernel/net/ipv6/ipv6_sockglue.c
+++ b/kernel/net/ipv6/ipv6_sockglue.c
@@ -429,9 +429,6 @@
if (optlen < sizeof(int))
goto e_inval;
if (val == PF_INET) {
- struct ipv6_txoptions *opt;
- struct sk_buff *pktopt;
-
if (sk->sk_type == SOCK_RAW)
break;
@@ -462,7 +459,6 @@
break;
}
- fl6_free_socklist(sk);
__ipv6_sock_mc_close(sk);
__ipv6_sock_ac_close(sk);
@@ -497,14 +493,14 @@
sk->sk_socket->ops = &inet_dgram_ops;
sk->sk_family = PF_INET;
}
- opt = xchg((__force struct ipv6_txoptions **)&np->opt,
- NULL);
- if (opt) {
- atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
- txopt_put(opt);
- }
- pktopt = xchg(&np->pktoptions, NULL);
- kfree_skb(pktopt);
+
+ /* Disable all options not to allocate memory anymore,
+ * but there is still a race. See the lockless path
+ * in udpv6_sendmsg() and ipv6_local_rxpmtu().
+ */
+ np->rxopt.all = 0;
+
+ inet6_cleanup_sock(sk);
/*
* ... and add it to the refcnt debug socks count
--
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