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https://github.com/torvalds/linux
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92d8682926
Like metrics, the ICMP rate limiting bits are cached state about a destination. So move it into the inet_peer entries. If an inet_peer cannot be bound (the reason is memory allocation failure or similar), the policy is to allow. Signed-off-by: David S. Miller <davem@davemloft.net>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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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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* interface as the means of communication with the user level.
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*
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* Definitions for the ICMP module.
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*
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* Version: @(#)icmp.h 1.0.4 05/13/93
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*
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* Authors: Ross Biro
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* 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 _ICMP_H
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#define _ICMP_H
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#include <linux/icmp.h>
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#include <net/inet_sock.h>
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#include <net/snmp.h>
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struct icmp_err {
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int errno;
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unsigned fatal:1;
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};
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extern const struct icmp_err icmp_err_convert[];
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#define ICMP_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.icmp_statistics, field)
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#define ICMP_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.icmp_statistics, field)
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#define ICMPMSGOUT_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.icmpmsg_statistics, field+256)
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#define ICMPMSGIN_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.icmpmsg_statistics, field)
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struct dst_entry;
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struct net_proto_family;
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struct sk_buff;
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struct net;
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extern void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
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extern int icmp_rcv(struct sk_buff *skb);
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extern int icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
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extern int icmp_init(void);
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extern void icmp_out_count(struct net *net, unsigned char type);
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#endif /* _ICMP_H */
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