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6d0bfe2261
This adds the ability to send ICMPv6 echo requests without a
raw socket. The equivalent ability for ICMPv4 was added in
2011.
Instead of having separate code paths for IPv4 and IPv6, make
most of the code in net/ipv4/ping.c dual-stack and only add a
few IPv6-specific bits (like the protocol definition) to a new
net/ipv6/ping.c. Hopefully this will reduce divergence and/or
duplication of bugs in the future.
Caveats:
- Setting options via ancillary data (e.g., using IPV6_PKTINFO
to specify the outgoing interface) is not yet supported.
- There are no separate security settings for IPv4 and IPv6;
everything is controlled by /proc/net/ipv4/ping_group_range.
- The proc interface does not yet display IPv6 ping sockets
properly.
Tested with a patched copy of ping6 and using raw socket calls.
Compiles and works with all of CONFIG_IPV6={n,m,y}.
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#ifndef _TRANSP_V6_H
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#define _TRANSP_V6_H
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#include <net/checksum.h>
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/*
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* IPv6 transport protocols
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*/
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extern struct proto rawv6_prot;
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extern struct proto udpv6_prot;
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extern struct proto udplitev6_prot;
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extern struct proto tcpv6_prot;
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extern struct proto pingv6_prot;
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struct flowi6;
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/* extension headers */
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extern int ipv6_exthdrs_init(void);
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extern void ipv6_exthdrs_exit(void);
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extern int ipv6_frag_init(void);
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extern void ipv6_frag_exit(void);
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/* transport protocols */
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extern int pingv6_init(void);
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extern void pingv6_exit(void);
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extern int rawv6_init(void);
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extern void rawv6_exit(void);
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extern int udpv6_init(void);
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extern void udpv6_exit(void);
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extern int udplitev6_init(void);
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extern void udplitev6_exit(void);
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extern int tcpv6_init(void);
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extern void tcpv6_exit(void);
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extern int udpv6_connect(struct sock *sk,
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struct sockaddr *uaddr,
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int addr_len);
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extern int ip6_datagram_recv_ctl(struct sock *sk,
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struct msghdr *msg,
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struct sk_buff *skb);
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extern int ip6_datagram_send_ctl(struct net *net,
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struct sock *sk,
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struct msghdr *msg,
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struct flowi6 *fl6,
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struct ipv6_txoptions *opt,
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int *hlimit, int *tclass,
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int *dontfrag);
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#define LOOPBACK4_IPV6 cpu_to_be32(0x7f000006)
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/*
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* address family specific functions
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*/
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extern const struct inet_connection_sock_af_ops ipv4_specific;
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extern void inet6_destroy_sock(struct sock *sk);
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#endif
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