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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/net/ipv4/tcp_offload.c
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@@ -1,15 +1,12 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *	IPV4 GSO/GRO offload support
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  *	Linux INET implementation
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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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  *	TCPv4 GSO/GRO support
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  */
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+#include <linux/indirect_call_wrapper.h>
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 #include <linux/skbuff.h>
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 #include <net/tcp.h>
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 #include <net/protocol.h>
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@@ -301,11 +298,15 @@
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 	if (th->cwr)
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 		skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN;
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+	if (skb->encapsulation)
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+		skb->inner_transport_header = skb->transport_header;
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+
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 	return 0;
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 }
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 EXPORT_SYMBOL(tcp_gro_complete);
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-static struct sk_buff *tcp4_gro_receive(struct list_head *head, struct sk_buff *skb)
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+INDIRECT_CALLABLE_SCOPE
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+struct sk_buff *tcp4_gro_receive(struct list_head *head, struct sk_buff *skb)
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 {
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 	/* Don't bother verifying checksum if we're going to flush anyway. */
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 	if (!NAPI_GRO_CB(skb)->flush &&
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@@ -318,7 +319,7 @@
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 	return tcp_gro_receive(head, skb);
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 }
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-static int tcp4_gro_complete(struct sk_buff *skb, int thoff)
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+INDIRECT_CALLABLE_SCOPE int tcp4_gro_complete(struct sk_buff *skb, int thoff)
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 {
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 	const struct iphdr *iph = ip_hdr(skb);
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 	struct tcphdr *th = tcp_hdr(skb);