206 static struct sock *icmp_sk(struct net *net)  in icmp_sk()  argument
208 	return net->ipv4.icmp_sk[smp_processor_id()];  in icmp_sk()
211 static inline struct sock *icmp_xmit_lock(struct net *net)  in icmp_xmit_lock()  argument
217 	sk = icmp_sk(net);  in icmp_xmit_lock()
288 static bool icmpv4_xrlim_allow(struct net *net, struct rtable *rt,  in icmpv4_xrlim_allow()  argument
306 	if (!((1 << type) & net->ipv4.sysctl_icmp_ratemask))  in icmpv4_xrlim_allow()
313 		peer = inet_getpeer_v4(net->ipv4.peers, fl4->daddr, 1);  in icmpv4_xrlim_allow()
315 					   net->ipv4.sysctl_icmp_ratelimit);  in icmpv4_xrlim_allow()
326 void icmp_out_count(struct net *net, unsigned char type)  in icmp_out_count()  argument
328 	ICMPMSGOUT_INC_STATS(net, type);  in icmp_out_count()
329 	ICMP_INC_STATS(net, ICMP_MIB_OUTMSGS);  in icmp_out_count()
391 	struct net *net = dev_net(rt->dst.dev);  in icmp_reply()  local
396 	u32 mark = IP4_REPLY_MARK(net, skb->mark);  in icmp_reply()
401 	sk = icmp_xmit_lock(net);  in icmp_reply()
426 	fl4.flowi4_uid = sock_net_uid(net, NULL);  in icmp_reply()
430 	rt = ip_route_output_key(net, &fl4);  in icmp_reply()
433 	if (icmpv4_xrlim_allow(net, rt, &fl4, icmp_param->data.icmph.type,  in icmp_reply()
441 static struct rtable *icmp_route_lookup(struct net *net,  in icmp_route_lookup()  argument
458 	fl4->flowi4_uid = sock_net_uid(net, NULL);  in icmp_route_lookup()
464 	rt = __ip_route_output_key(net, fl4);  in icmp_route_lookup()
471 	rt = (struct rtable *) xfrm_lookup(net, &rt->dst,  in icmp_route_lookup()
485 	if (inet_addr_type(net, fl4_dec.saddr) == RTN_LOCAL) {  in icmp_route_lookup()
486 		rt2 = __ip_route_output_key(net, &fl4_dec);  in icmp_route_lookup()
494 		rt2 = ip_route_output_key(net, &fl4_2);  in icmp_route_lookup()
512 	rt2 = (struct rtable *) xfrm_lookup(net, &rt2->dst,  in icmp_route_lookup()
557 	struct net *net;  in icmp_send()  local
562 	net = dev_net(rt->dst.dev);  in icmp_send()
631 	sk = icmp_xmit_lock(net);  in icmp_send()
645 		    net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr)  in icmp_send()
646 			dev = dev_get_by_index_rcu(net, inet_iif(skb_in));  in icmp_send()
658 	mark = IP4_REPLY_MARK(net, skb_in->mark);  in icmp_send()
682 	rt = icmp_route_lookup(net, &fl4, skb_in, iph, saddr, tos, mark,  in icmp_send()
687 	if (!icmpv4_xrlim_allow(net, rt, &fl4, type, code))  in icmp_send()
755 	struct net *net;  in icmp_unreach()  local
758 	net = dev_net(skb_dst(skb)->dev);  in icmp_unreach()
787 			switch (net->ipv4.sysctl_ip_no_pmtu_disc) {  in icmp_unreach()
832 	if (!net->ipv4.sysctl_icmp_ignore_bogus_error_responses &&  in icmp_unreach()
833 	    inet_addr_type(net, iph->daddr) == RTN_BROADCAST) {  in icmp_unreach()
846 	ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);  in icmp_unreach()
882 	struct net *net;  in icmp_echo()  local
884 	net = dev_net(skb_dst(skb)->dev);  in icmp_echo()
885 	if (!net->ipv4.sysctl_icmp_echo_ignore_all) {  in icmp_echo()
947 	struct net *net = dev_net(rt->dst.dev);  in icmp_rcv()  local
969 	ICMP_INC_STATS_BH(net, ICMP_MIB_INMSGS);  in icmp_rcv()
979 	ICMPMSGIN_INC_STATS_BH(net, icmph->type);  in icmp_rcv()
1003 		    net->ipv4.sysctl_icmp_echo_ignore_broadcasts) {  in icmp_rcv()
1020 	ICMP_INC_STATS_BH(net, ICMP_MIB_CSUMERRORS);  in icmp_rcv()
1022 	ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);  in icmp_rcv()
1033 	struct net *net = dev_net(skb->dev);  in icmp_err()  local
1045 		ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_ICMP, 0);  in icmp_err()
1047 		ipv4_redirect(skb, net, 0, 0, IPPROTO_ICMP, 0);  in icmp_err()
1124 static void __net_exit icmp_sk_exit(struct net *net)  in icmp_sk_exit()  argument
1129 		inet_ctl_sock_destroy(net->ipv4.icmp_sk[i]);  in icmp_sk_exit()
1130 	kfree(net->ipv4.icmp_sk);  in icmp_sk_exit()
1131 	net->ipv4.icmp_sk = NULL;  in icmp_sk_exit()
1134 static int __net_init icmp_sk_init(struct net *net)  in icmp_sk_init()  argument
1138 	net->ipv4.icmp_sk =  in icmp_sk_init()
1140 	if (net->ipv4.icmp_sk == NULL)  in icmp_sk_init()
1147 					   SOCK_RAW, IPPROTO_ICMP, net);  in icmp_sk_init()
1151 		net->ipv4.icmp_sk[i] = sk;  in icmp_sk_init()
1166 	net->ipv4.sysctl_icmp_echo_ignore_all = 0;  in icmp_sk_init()
1167 	net->ipv4.sysctl_icmp_echo_ignore_broadcasts = 1;  in icmp_sk_init()
1170 	net->ipv4.sysctl_icmp_ignore_bogus_error_responses = 1;  in icmp_sk_init()
1184 	net->ipv4.sysctl_icmp_ratelimit = 1 * HZ;  in icmp_sk_init()
1185 	net->ipv4.sysctl_icmp_ratemask = 0x1818;  in icmp_sk_init()
1186 	net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr = 0;  in icmp_sk_init()
1192 		inet_ctl_sock_destroy(net->ipv4.icmp_sk[i]);  in icmp_sk_init()
1193 	kfree(net->ipv4.icmp_sk);  in icmp_sk_init()