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/8021q/vlan_core.c | 133 +++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 129 insertions(+), 4 deletions(-)
diff --git a/kernel/net/8021q/vlan_core.c b/kernel/net/8021q/vlan_core.c
index 4f60e86..78ec2e1 100644
--- a/kernel/net/8021q/vlan_core.c
+++ b/kernel/net/8021q/vlan_core.c
@@ -57,7 +57,7 @@
}
skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
- skb->vlan_tci = 0;
+ __vlan_hwaccel_clear_tag(skb);
rx_stats = this_cpu_ptr(vlan_dev_priv(vlan_dev)->vlan_pcpu_stats);
@@ -223,6 +223,33 @@
return -ENODEV;
}
+int vlan_for_each(struct net_device *dev,
+ int (*action)(struct net_device *dev, int vid, void *arg),
+ void *arg)
+{
+ struct vlan_vid_info *vid_info;
+ struct vlan_info *vlan_info;
+ struct net_device *vdev;
+ int ret;
+
+ ASSERT_RTNL();
+
+ vlan_info = rtnl_dereference(dev->vlan_info);
+ if (!vlan_info)
+ return 0;
+
+ list_for_each_entry(vid_info, &vlan_info->vid_list, list) {
+ vdev = vlan_group_get_device(&vlan_info->grp, vid_info->proto,
+ vid_info->vid);
+ ret = action(vdev, vid_info->vid, arg);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(vlan_for_each);
+
int vlan_filter_push_vids(struct vlan_info *vlan_info, __be16 proto)
{
struct net_device *real_dev = vlan_info->real_dev;
@@ -332,9 +359,8 @@
int err;
err = vlan_kill_rx_filter_info(dev, proto, vid);
- if (err)
- pr_warn("failed to kill vid %04x/%d for device %s\n",
- proto, vid, dev->name);
+ if (err && dev->reg_state != NETREG_UNREGISTERING)
+ netdev_warn(dev, "failed to kill vid %04x/%d\n", proto, vid);
list_del(&vid_info->list);
kfree(vid_info);
@@ -426,3 +452,102 @@
return vlan_info->grp.nr_vlan_devs ? true : false;
}
EXPORT_SYMBOL(vlan_uses_dev);
+
+static struct sk_buff *vlan_gro_receive(struct list_head *head,
+ struct sk_buff *skb)
+{
+ const struct packet_offload *ptype;
+ unsigned int hlen, off_vlan;
+ struct sk_buff *pp = NULL;
+ struct vlan_hdr *vhdr;
+ struct sk_buff *p;
+ __be16 type;
+ int flush = 1;
+
+ off_vlan = skb_gro_offset(skb);
+ hlen = off_vlan + sizeof(*vhdr);
+ vhdr = skb_gro_header_fast(skb, off_vlan);
+ if (skb_gro_header_hard(skb, hlen)) {
+ vhdr = skb_gro_header_slow(skb, hlen, off_vlan);
+ if (unlikely(!vhdr))
+ goto out;
+ }
+
+ type = vhdr->h_vlan_encapsulated_proto;
+
+ rcu_read_lock();
+ ptype = gro_find_receive_by_type(type);
+ if (!ptype)
+ goto out_unlock;
+
+ flush = 0;
+
+ list_for_each_entry(p, head, list) {
+ struct vlan_hdr *vhdr2;
+
+ if (!NAPI_GRO_CB(p)->same_flow)
+ continue;
+
+ vhdr2 = (struct vlan_hdr *)(p->data + off_vlan);
+ if (compare_vlan_header(vhdr, vhdr2))
+ NAPI_GRO_CB(p)->same_flow = 0;
+ }
+
+ skb_gro_pull(skb, sizeof(*vhdr));
+ skb_gro_postpull_rcsum(skb, vhdr, sizeof(*vhdr));
+ pp = call_gro_receive(ptype->callbacks.gro_receive, head, skb);
+
+out_unlock:
+ rcu_read_unlock();
+out:
+ skb_gro_flush_final(skb, pp, flush);
+
+ return pp;
+}
+
+static int vlan_gro_complete(struct sk_buff *skb, int nhoff)
+{
+ struct vlan_hdr *vhdr = (struct vlan_hdr *)(skb->data + nhoff);
+ __be16 type = vhdr->h_vlan_encapsulated_proto;
+ struct packet_offload *ptype;
+ int err = -ENOENT;
+
+ rcu_read_lock();
+ ptype = gro_find_complete_by_type(type);
+ if (ptype)
+ err = ptype->callbacks.gro_complete(skb, nhoff + sizeof(*vhdr));
+
+ rcu_read_unlock();
+ return err;
+}
+
+static struct packet_offload vlan_packet_offloads[] __read_mostly = {
+ {
+ .type = cpu_to_be16(ETH_P_8021Q),
+ .priority = 10,
+ .callbacks = {
+ .gro_receive = vlan_gro_receive,
+ .gro_complete = vlan_gro_complete,
+ },
+ },
+ {
+ .type = cpu_to_be16(ETH_P_8021AD),
+ .priority = 10,
+ .callbacks = {
+ .gro_receive = vlan_gro_receive,
+ .gro_complete = vlan_gro_complete,
+ },
+ },
+};
+
+static int __init vlan_offload_init(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vlan_packet_offloads); i++)
+ dev_add_offload(&vlan_packet_offloads[i]);
+
+ return 0;
+}
+
+fs_initcall(vlan_offload_init);
--
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