enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/include/net/ip6_checksum.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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@@ -9,11 +10,6 @@
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  *		Arnt Gulbrandsen, <agulbra@nvg.unit.no>
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  *		Borrows very liberally from tcp.c and ip.c, see those
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  *		files for more names.
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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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 /*
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@@ -80,14 +76,14 @@
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 	}
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 }
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-#if IS_ENABLED(CONFIG_IPV6)
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-static inline void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
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+static inline void tcp_v6_gso_csum_prep(struct sk_buff *skb)
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 {
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-	struct ipv6_pinfo *np = inet6_sk(sk);
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+	struct ipv6hdr *ipv6h = ipv6_hdr(skb);
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+	struct tcphdr *th = tcp_hdr(skb);
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-	__tcp_v6_send_check(skb, &np->saddr, &sk->sk_v6_daddr);
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+	ipv6h->payload_len = 0;
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+	th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);
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 }
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-#endif
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 static inline __sum16 udp_v6_check(int len,
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 				   const struct in6_addr *saddr,