93 int ip_frag_mem(struct net *net)  in ip_frag_mem()  argument
95 	return sum_frag_mem_limit(&net->ipv4.frags);  in ip_frag_mem()
140 	struct netns_ipv4 *ipv4 = container_of(q->net, struct netns_ipv4,  in ip4_frag_init()
142 	struct net *net = container_of(ipv4, struct net, ipv4);  in ip4_frag_init()  local
154 		inet_getpeer_v4(net->ipv4.peers, arg->iph->saddr, arg->vif, 1) :  in ip4_frag_init()
198 	struct net *net;  in ip_expire()  local
201 	net = container_of(qp->q.net, struct net, ipv4.frags);  in ip_expire()
209 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);  in ip_expire()
216 		IP_INC_STATS_BH(net, IPSTATS_MIB_REASMTIMEOUT);  in ip_expire()
222 		head->dev = dev_get_by_index_rcu(net, qp->iif);  in ip_expire()
253 static struct ipq *ip_find(struct net *net, struct iphdr *iph,  in ip_find()  argument
266 	q = inet_frag_find(&net->ipv4.frags, &ip4_frags, &arg, hash);  in ip_find()
293 		struct net *net;  in ip_frag_too_far()  local
295 		net = container_of(qp->q.net, struct net, ipv4.frags);  in ip_frag_too_far()
296 		IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);  in ip_frag_too_far()
307 	if (!mod_timer(&qp->q.timer, jiffies + qp->q.net->timeout)) {  in ip_frag_reinit()
320 	sub_frag_mem_limit(qp->q.net, sum_truesize);  in ip_frag_reinit()
466 			sub_frag_mem_limit(qp->q.net, free_it->truesize);  in ip_frag_queue()
490 	add_frag_mem_limit(qp->q.net, skb->truesize);  in ip_frag_queue()
527 	struct net *net = container_of(qp->q.net, struct net, ipv4.frags);  in ip_frag_reasm()  local
597 		add_frag_mem_limit(qp->q.net, clone->truesize);  in ip_frag_reasm()
612 	sub_frag_mem_limit(qp->q.net, head->truesize);  in ip_frag_reasm()
640 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS);  in ip_frag_reasm()
652 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);  in ip_frag_reasm()
657 int ip_defrag(struct net *net, struct sk_buff *skb, u32 user)  in ip_defrag()  argument
663 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMREQDS);  in ip_defrag()
667 	qp = ip_find(net, ip_hdr(skb), user, vif);  in ip_defrag()
680 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);  in ip_defrag()
686 struct sk_buff *ip_check_defrag(struct net *net, struct sk_buff *skb, u32 user)  in ip_check_defrag()  argument
715 			if (ip_defrag(net, skb, user))  in ip_check_defrag()
776 static int __net_init ip4_frags_ns_ctl_register(struct net *net)  in ip4_frags_ns_ctl_register()  argument
782 	if (!net_eq(net, &init_net)) {  in ip4_frags_ns_ctl_register()
787 		table[0].data = &net->ipv4.frags.high_thresh;  in ip4_frags_ns_ctl_register()
788 		table[0].extra1 = &net->ipv4.frags.low_thresh;  in ip4_frags_ns_ctl_register()
790 		table[1].data = &net->ipv4.frags.low_thresh;  in ip4_frags_ns_ctl_register()
791 		table[1].extra2 = &net->ipv4.frags.high_thresh;  in ip4_frags_ns_ctl_register()
792 		table[2].data = &net->ipv4.frags.timeout;  in ip4_frags_ns_ctl_register()
795 		if (net->user_ns != &init_user_ns)  in ip4_frags_ns_ctl_register()
799 	hdr = register_net_sysctl(net, "net/ipv4", table);  in ip4_frags_ns_ctl_register()
803 	net->ipv4.frags_hdr = hdr;  in ip4_frags_ns_ctl_register()
807 	if (!net_eq(net, &init_net))  in ip4_frags_ns_ctl_register()
813 static void __net_exit ip4_frags_ns_ctl_unregister(struct net *net)  in ip4_frags_ns_ctl_unregister()  argument
817 	table = net->ipv4.frags_hdr->ctl_table_arg;  in ip4_frags_ns_ctl_unregister()
818 	unregister_net_sysctl_table(net->ipv4.frags_hdr);  in ip4_frags_ns_ctl_unregister()
827 static int ip4_frags_ns_ctl_register(struct net *net)  in ip4_frags_ns_ctl_register()  argument
832 static void ip4_frags_ns_ctl_unregister(struct net *net)  in ip4_frags_ns_ctl_unregister()  argument
841 static int __net_init ipv4_frags_init_net(struct net *net)  in ipv4_frags_init_net()  argument
859 	net->ipv4.frags.high_thresh = 4 * 1024 * 1024;  in ipv4_frags_init_net()
860 	net->ipv4.frags.low_thresh  = 3 * 1024 * 1024;  in ipv4_frags_init_net()
866 	net->ipv4.frags.timeout = IP_FRAG_TIME;  in ipv4_frags_init_net()
868 	res = inet_frags_init_net(&net->ipv4.frags);  in ipv4_frags_init_net()
871 	res = ip4_frags_ns_ctl_register(net);  in ipv4_frags_init_net()
873 		inet_frags_uninit_net(&net->ipv4.frags);  in ipv4_frags_init_net()
877 static void __net_exit ipv4_frags_exit_net(struct net *net)  in ipv4_frags_exit_net()  argument
879 	ip4_frags_ns_ctl_unregister(net);  in ipv4_frags_exit_net()
880 	inet_frags_exit_net(&net->ipv4.frags, &ip4_frags);  in ipv4_frags_exit_net()