add driver 5G

hc

2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2

 kernel/include/net/route.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * INET		An implementation of the TCP/IP protocol suite for the LINUX
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  *		operating system.  INET  is implemented using the  BSD Socket
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@@ -15,11 +16,6 @@
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  *		Alexey Kuznetsov:	Major changes for new routing code.
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  *		Mike McLagan    :	Routing by source
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  *		Robert Olsson   :	Added rt_cache statistics
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- *
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- *		This program is free software; you can redistribute it and/or
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- *		modify it under the terms of the GNU General Public License
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- *		as published by the Free Software Foundation; either version
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- *		2 of the License, or (at your option) any later version.
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  */
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 #ifndef _ROUTE_H
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 #define _ROUTE_H
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@@ -29,6 +25,8 @@
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 #include <net/flow.h>
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 #include <net/inet_sock.h>
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 #include <net/ip_fib.h>
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+#include <net/arp.h>
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+#include <net/ndisc.h>
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 #include <linux/in_route.h>
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 #include <linux/rtnetlink.h>
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 #include <linux/rcupdate.h>
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@@ -59,8 +57,12 @@
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57
 
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 	int			rt_iif;
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+	u8			rt_gw_family;
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 	/* Info on neighbour */
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-	__be32			rt_gateway;
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+	union {
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+		__be32		rt_gw4;
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+		struct in6_addr	rt_gw6;
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+	};
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 	/* Miscellaneous cached information */
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 	u32			rt_mtu_locked:1,
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@@ -82,8 +84,8 @@
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84
 
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 static inline __be32 rt_nexthop(const struct rtable *rt, __be32 daddr)
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 {
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-	if (rt->rt_gateway)
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-		return rt->rt_gateway;
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+	if (rt->rt_gw_family == AF_INET)
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+		return rt->rt_gw4;
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 	return daddr;
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 }
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@@ -126,6 +128,12 @@
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128
 
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 struct rtable *ip_route_output_flow(struct net *, struct flowi4 *flp,
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 				    const struct sock *sk);
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+struct rtable *ip_route_output_tunnel(struct sk_buff *skb,
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+				      struct net_device *dev,
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+				      struct net *net, __be32 *saddr,
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+				      const struct ip_tunnel_info *info,
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+				      u8 protocol, bool use_cache);
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+
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 struct dst_entry *ipv4_blackhole_route(struct net *net,
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 				       struct dst_entry *dst_orig);
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@@ -157,7 +165,7 @@
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 			   sk ? inet_sk_flowi_flags(sk) : 0,
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 			   daddr, saddr, dport, sport, sock_net_uid(net, sk));
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 	if (sk)
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-		security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
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+		security_sk_classify_flow(sk, flowi4_to_flowi_common(fl4));
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 	return ip_route_output_flow(net, fl4, sk);
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 }
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@@ -183,6 +191,10 @@
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 		       u8 tos, struct net_device *devin,
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 		       struct fib_result *res);
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193
 
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+int ip_route_use_hint(struct sk_buff *skb, __be32 dst, __be32 src,
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+		      u8 tos, struct net_device *devin,
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+		      const struct sk_buff *hint);
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+
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 static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src,
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 				 u8 tos, struct net_device *devin)
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 {
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@@ -201,10 +213,9 @@
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 }
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 void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu, int oif,
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-		      u32 mark, u8 protocol, int flow_flags);
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+		      u8 protocol);
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 void ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu);
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-void ipv4_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark,
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-		   u8 protocol, int flow_flags);
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+void ipv4_redirect(struct sk_buff *skb, struct net *net, int oif, u8 protocol);
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 void ipv4_sk_redirect(struct sk_buff *skb, struct sock *sk);
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 void ip_rt_send_redirect(struct sk_buff *skb);
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@@ -220,7 +231,8 @@
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 void ip_rt_get_source(u8 *src, struct sk_buff *skb, struct rtable *rt);
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 struct rtable *rt_dst_alloc(struct net_device *dev,
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 			     unsigned int flags, u16 type,
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-			     bool nopolicy, bool noxfrm, bool will_cache);
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+			     bool nopolicy, bool noxfrm);
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+struct rtable *rt_dst_clone(struct net_device *dev, struct rtable *rt);
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 struct in_ifaddr;
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 void fib_add_ifaddr(struct in_ifaddr *);
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@@ -229,6 +241,10 @@
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 void rt_add_uncached_list(struct rtable *rt);
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 void rt_del_uncached_list(struct rtable *rt);
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+
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+int fib_dump_info_fnhe(struct sk_buff *skb, struct netlink_callback *cb,
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+		       u32 table_id, struct fib_info *fi,
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+		       int *fa_index, int fa_start, unsigned int flags);
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 static inline void ip_rt_put(struct rtable *rt)
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 {
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@@ -306,7 +322,7 @@
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 		ip_rt_put(rt);
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 		flowi4_update_output(fl4, oif, tos, fl4->daddr, fl4->saddr);
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 	}
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-	security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
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+	security_sk_classify_flow(sk, flowi4_to_flowi_common(fl4));
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 	return ip_route_output_flow(net, fl4, sk);
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 }
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@@ -322,7 +338,7 @@
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 		flowi4_update_output(fl4, sk->sk_bound_dev_if,
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 				     RT_CONN_FLAGS(sk), fl4->daddr,
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 				     fl4->saddr);
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-		security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
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+		security_sk_classify_flow(sk, flowi4_to_flowi_common(fl4));
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 		return ip_route_output_flow(sock_net(sk), fl4, sk);
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 	}
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 	return rt;
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@@ -348,4 +364,34 @@
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 	return hoplimit;
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 }
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+static inline struct neighbour *ip_neigh_gw4(struct net_device *dev,
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+					     __be32 daddr)
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+{
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+	struct neighbour *neigh;
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+
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+	neigh = __ipv4_neigh_lookup_noref(dev, (__force u32)daddr);
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+	if (unlikely(!neigh))
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+		neigh = __neigh_create(&arp_tbl, &daddr, dev, false);
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+
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+	return neigh;
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+}
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+
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+static inline struct neighbour *ip_neigh_for_gw(struct rtable *rt,
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+						struct sk_buff *skb,
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+						bool *is_v6gw)
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+{
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+	struct net_device *dev = rt->dst.dev;
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+	struct neighbour *neigh;
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+
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+	if (likely(rt->rt_gw_family == AF_INET)) {
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+		neigh = ip_neigh_gw4(dev, rt->rt_gw4);
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+	} else if (rt->rt_gw_family == AF_INET6) {
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+		neigh = ip_neigh_gw6(dev, &rt->rt_gw6);
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+		*is_v6gw = true;
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+	} else {
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+		neigh = ip_neigh_gw4(dev, ip_hdr(skb)->daddr);
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+	}
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+	return neigh;
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+}
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+
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 #endif	/* _ROUTE_H */