Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * INET		An implementation of the TCP/IP protocol suite for the LINUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *		operating system.  INET is implemented using the  BSD Socket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *		interface as the means of communication with the user level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *		"Ping" sockets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Based on ipv4/ping.c code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Authors:	Lorenzo Colitti (IPv6 support)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *		Vasiliy Kulikov / Openwall (IPv4 implementation, for Linux 2.6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *		Pavel Kankovsky (IPv4 implementation, for Linux 2.4.32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <net/addrconf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <net/ip6_route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <net/protocol.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <net/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <net/transp_v6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <net/ping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /* Compatibility glue so we can support IPv6 when it's compiled as a module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) static int dummy_ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 				 int *addr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static void dummy_ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 				       struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) static int dummy_icmpv6_err_convert(u8 type, u8 code, int *err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static void dummy_ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 				  __be16 port, u32 info, u8 *payload) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) static int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 			       const struct net_device *dev, int strict)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct ipv6_pinfo *np = inet6_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct icmp6hdr user_icmph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	int addr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	struct in6_addr *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	int oif = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct flowi6 fl6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct dst_entry *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	struct rt6_info *rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct pingfakehdr pfh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	struct ipcm6_cookie ipc6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	pr_debug("ping_v6_sendmsg(sk=%p,sk->num=%u)\n", inet, inet->inet_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	err = ping_common_sendmsg(AF_INET6, msg, len, &user_icmph,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 				  sizeof(user_icmph));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (msg->msg_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		DECLARE_SOCKADDR(struct sockaddr_in6 *, u, msg->msg_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		if (msg->msg_namelen < sizeof(*u))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		if (u->sin6_family != AF_INET6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		daddr = &(u->sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		if (__ipv6_addr_needs_scope_id(ipv6_addr_type(daddr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			oif = u->sin6_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		if (sk->sk_state != TCP_ESTABLISHED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			return -EDESTADDRREQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		daddr = &sk->sk_v6_daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	if (!oif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		oif = sk->sk_bound_dev_if;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (!oif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		oif = np->sticky_pktinfo.ipi6_ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (!oif && ipv6_addr_is_multicast(daddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		oif = np->mcast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	else if (!oif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		oif = np->ucast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	addr_type = ipv6_addr_type(daddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	if ((__ipv6_addr_needs_scope_id(addr_type) && !oif) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	    (addr_type & IPV6_ADDR_MAPPED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	    (oif && sk->sk_bound_dev_if && oif != sk->sk_bound_dev_if))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	/* TODO: use ip6_datagram_send_ctl to get options from cmsg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	memset(&fl6, 0, sizeof(fl6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	fl6.flowi6_proto = IPPROTO_ICMPV6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	fl6.saddr = np->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	fl6.daddr = *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	fl6.flowi6_oif = oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	fl6.flowi6_mark = sk->sk_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	fl6.flowi6_uid = sk->sk_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	fl6.fl6_icmp_type = user_icmph.icmp6_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	fl6.fl6_icmp_code = user_icmph.icmp6_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	ipcm6_init_sk(&ipc6, np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	ipc6.sockc.mark = sk->sk_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	dst = ip6_sk_dst_lookup_flow(sk, &fl6, daddr, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	if (IS_ERR(dst))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		return PTR_ERR(dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	rt = (struct rt6_info *) dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		fl6.flowi6_oif = np->mcast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	else if (!fl6.flowi6_oif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		fl6.flowi6_oif = np->ucast_oif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	pfh.icmph.type = user_icmph.icmp6_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	pfh.icmph.code = user_icmph.icmp6_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	pfh.icmph.checksum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	pfh.icmph.un.echo.id = inet->inet_sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	pfh.icmph.un.echo.sequence = user_icmph.icmp6_sequence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	pfh.msg = msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	pfh.wcheck = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	pfh.family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	err = ip6_append_data(sk, ping_getfrag, &pfh, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			      0, &ipc6, &fl6, rt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			      MSG_DONTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		ICMP6_INC_STATS(sock_net(sk), rt->rt6i_idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 				ICMP6_MIB_OUTERRORS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		ip6_flush_pending_frames(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		icmpv6_push_pending_frames(sk, &fl6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 					   (struct icmp6hdr *)&pfh.icmph, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	dst_release(dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct proto pingv6_prot = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	.name =		"PINGv6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	.owner =	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	.init =		ping_init_sock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	.close =	ping_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	.connect =	ip6_datagram_connect_v6_only,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	.disconnect =	__udp_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	.setsockopt =	ipv6_setsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	.getsockopt =	ipv6_getsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	.sendmsg =	ping_v6_sendmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	.recvmsg =	ping_recvmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	.bind =		ping_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	.backlog_rcv =	ping_queue_rcv_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	.hash =		ping_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	.unhash =	ping_unhash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	.get_port =	ping_get_port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	.obj_size =	sizeof(struct raw6_sock),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) EXPORT_SYMBOL_GPL(pingv6_prot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static struct inet_protosw pingv6_protosw = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	.type =      SOCK_DGRAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	.protocol =  IPPROTO_ICMPV6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	.prot =      &pingv6_prot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	.ops =       &inet6_sockraw_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	.flags =     INET_PROTOSW_REUSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static void *ping_v6_seq_start(struct seq_file *seq, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return ping_seq_start(seq, pos, AF_INET6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static int ping_v6_seq_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		int bucket = ((struct ping_iter_state *) seq->private)->bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		struct inet_sock *inet = inet_sk(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		__u16 srcp = ntohs(inet->inet_sport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		__u16 destp = ntohs(inet->inet_dport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		ip6_dgram_sock_seq_show(seq, v, srcp, destp, bucket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static const struct seq_operations ping_v6_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	.start		= ping_v6_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	.show		= ping_v6_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	.next		= ping_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	.stop		= ping_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int __net_init ping_v6_proc_init_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if (!proc_create_net("icmp6", 0444, net->proc_net, &ping_v6_seq_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			sizeof(struct ping_iter_state)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static void __net_exit ping_v6_proc_exit_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	remove_proc_entry("icmp6", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static struct pernet_operations ping_v6_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	.init = ping_v6_proc_init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	.exit = ping_v6_proc_exit_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int __init pingv6_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	int ret = register_pernet_subsys(&ping_v6_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	pingv6_ops.ipv6_recv_error = ipv6_recv_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	pingv6_ops.ip6_datagram_recv_common_ctl = ip6_datagram_recv_common_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	pingv6_ops.ip6_datagram_recv_specific_ctl =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		ip6_datagram_recv_specific_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return inet6_register_protosw(&pingv6_protosw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /* This never gets called because it's not possible to unload the ipv6 module,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)  * but just in case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) void pingv6_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	pingv6_ops.ip6_datagram_recv_common_ctl = dummy_ip6_datagram_recv_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	pingv6_ops.ip6_datagram_recv_specific_ctl = dummy_ip6_datagram_recv_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	unregister_pernet_subsys(&ping_v6_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	inet6_unregister_protosw(&pingv6_protosw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }