From 8d2a02b24d66aa359e83eebc1ed3c0f85367a1cb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 16 May 2024 03:11:33 +0000
Subject: [PATCH] AX88772C_eeprom and ax8872c build together

---
 kernel/net/ipv4/ipip.c |   59 +++++++++++++++++++++--------------------------------------
 1 files changed, 21 insertions(+), 38 deletions(-)

diff --git a/kernel/net/ipv4/ipip.c b/kernel/net/ipv4/ipip.c
index da2e923..75d35e7 100644
--- a/kernel/net/ipv4/ipip.c
+++ b/kernel/net/ipv4/ipip.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *	Linux NET3:	IP/IP protocol decoder.
  *
@@ -16,12 +17,6 @@
  *              Carlos Picoto   :       GRE over IP support
  *		Alexey Kuznetsov:	Reworked. Really, now it is truncated version of ipv4/ip_gre.c.
  *					I do not want to merge them together.
- *
- *	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.
- *
  */
 
 /* tunnel.c: an IP tunnel driver
@@ -140,6 +135,13 @@
 	struct ip_tunnel *t;
 	int err = 0;
 
+	t = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
+			     iph->daddr, iph->saddr, 0);
+	if (!t) {
+		err = -ENOENT;
+		goto out;
+	}
+
 	switch (type) {
 	case ICMP_DEST_UNREACH:
 		switch (code) {
@@ -167,21 +169,13 @@
 		goto out;
 	}
 
-	t = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
-			     iph->daddr, iph->saddr, 0);
-	if (!t) {
-		err = -ENOENT;
-		goto out;
-	}
-
 	if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
-		ipv4_update_pmtu(skb, net, info, t->parms.link, 0,
-				 iph->protocol, 0);
+		ipv4_update_pmtu(skb, net, info, t->parms.link, iph->protocol);
 		goto out;
 	}
 
 	if (type == ICMP_REDIRECT) {
-		ipv4_redirect(skb, net, t->parms.link, 0, iph->protocol, 0);
+		ipv4_redirect(skb, net, t->parms.link, iph->protocol);
 		goto out;
 	}
 
@@ -306,7 +300,7 @@
 	skb_set_inner_ipproto(skb, ipproto);
 
 	if (tunnel->collect_md)
-		ip_md_tunnel_xmit(skb, dev, ipproto);
+		ip_md_tunnel_xmit(skb, dev, ipproto, 0);
 	else
 		ip_tunnel_xmit(skb, dev, tiph, ipproto);
 	return NETDEV_TX_OK;
@@ -333,41 +327,29 @@
 }
 
 static int
-ipip_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+ipip_tunnel_ctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd)
 {
-	int err = 0;
-	struct ip_tunnel_parm p;
-
-	if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
-		return -EFAULT;
-
 	if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) {
-		if (p.iph.version != 4 ||
-		    !ipip_tunnel_ioctl_verify_protocol(p.iph.protocol) ||
-		    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
+		if (p->iph.version != 4 ||
+		    !ipip_tunnel_ioctl_verify_protocol(p->iph.protocol) ||
+		    p->iph.ihl != 5 || (p->iph.frag_off & htons(~IP_DF)))
 			return -EINVAL;
 	}
 
-	p.i_key = p.o_key = 0;
-	p.i_flags = p.o_flags = 0;
-	err = ip_tunnel_ioctl(dev, &p, cmd);
-	if (err)
-		return err;
-
-	if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p)))
-		return -EFAULT;
-
-	return 0;
+	p->i_key = p->o_key = 0;
+	p->i_flags = p->o_flags = 0;
+	return ip_tunnel_ctl(dev, p, cmd);
 }
 
 static const struct net_device_ops ipip_netdev_ops = {
 	.ndo_init       = ipip_tunnel_init,
 	.ndo_uninit     = ip_tunnel_uninit,
 	.ndo_start_xmit	= ipip_tunnel_xmit,
-	.ndo_do_ioctl	= ipip_tunnel_ioctl,
+	.ndo_do_ioctl	= ip_tunnel_ioctl,
 	.ndo_change_mtu = ip_tunnel_change_mtu,
 	.ndo_get_stats64 = ip_tunnel_get_stats64,
 	.ndo_get_iflink = ip_tunnel_get_iflink,
+	.ndo_tunnel_ctl	= ipip_tunnel_ctl,
 };
 
 #define IPIP_FEATURES (NETIF_F_SG |		\
@@ -379,6 +361,7 @@
 static void ipip_tunnel_setup(struct net_device *dev)
 {
 	dev->netdev_ops		= &ipip_netdev_ops;
+	dev->header_ops		= &ip_tunnel_header_ops;
 
 	dev->type		= ARPHRD_TUNNEL;
 	dev->flags		= IFF_NOARP;

--
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