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/exthdrs.c | 29 +++++++++++------------------
1 files changed, 11 insertions(+), 18 deletions(-)
diff --git a/kernel/net/ipv6/exthdrs.c b/kernel/net/ipv6/exthdrs.c
index 4932dea..cdad901 100644
--- a/kernel/net/ipv6/exthdrs.c
+++ b/kernel/net/ipv6/exthdrs.c
@@ -552,24 +552,6 @@
return -1;
}
- if (skb_cloned(skb)) {
- if (pskb_expand_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE, 0,
- GFP_ATOMIC)) {
- __IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
- IPSTATS_MIB_OUTDISCARDS);
- kfree_skb(skb);
- return -1;
- }
- } else {
- err = skb_cow_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE);
- if (unlikely(err)) {
- kfree_skb(skb);
- return -1;
- }
- }
-
- hdr = (struct ipv6_rpl_sr_hdr *)skb_transport_header(skb);
-
if (!pskb_may_pull(skb, ipv6_rpl_srh_size(n, hdr->cmpri,
hdr->cmpre))) {
kfree_skb(skb);
@@ -615,6 +597,17 @@
skb_pull(skb, ((hdr->hdrlen + 1) << 3));
skb_postpull_rcsum(skb, oldhdr,
sizeof(struct ipv6hdr) + ((hdr->hdrlen + 1) << 3));
+ if (unlikely(!hdr->segments_left)) {
+ if (pskb_expand_head(skb, sizeof(struct ipv6hdr) + ((chdr->hdrlen + 1) << 3), 0,
+ GFP_ATOMIC)) {
+ __IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUTDISCARDS);
+ kfree_skb(skb);
+ kfree(buf);
+ return -1;
+ }
+
+ oldhdr = ipv6_hdr(skb);
+ }
skb_push(skb, ((chdr->hdrlen + 1) << 3) + sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
skb_mac_header_rebuild(skb);
--
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