write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/include/linux/icmp.h
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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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  * Version:	@(#)icmp.h	1.0.3	04/28/93
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  *
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  * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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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 _LINUX_ICMP_H
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 #define	_LINUX_ICMP_H
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 #include <linux/skbuff.h>
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 #include <uapi/linux/icmp.h>
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+#include <uapi/linux/errqueue.h>
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 static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
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 {
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 	return (struct icmphdr *)skb_transport_header(skb);
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 }
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+
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+static inline bool icmp_is_err(int type)
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+{
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+	switch (type) {
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+	case ICMP_DEST_UNREACH:
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+	case ICMP_SOURCE_QUENCH:
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+	case ICMP_REDIRECT:
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+	case ICMP_TIME_EXCEEDED:
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+	case ICMP_PARAMETERPROB:
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+		return true;
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+	}
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+
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+	return false;
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+}
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+
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+void ip_icmp_error_rfc4884(const struct sk_buff *skb,
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+			   struct sock_ee_data_rfc4884 *out,
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+			   int thlen, int off);
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+
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 #endif	/* _LINUX_ICMP_H */