--- zzzz-none-000/linux-4.4.271/net/netfilter/nf_conntrack_core.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/net/netfilter/nf_conntrack_core.c	2023-04-19 10:22:30.000000000 +0000
@@ -48,6 +48,7 @@
 #include <net/netfilter/nf_conntrack_zones.h>
 #include <net/netfilter/nf_conntrack_timestamp.h>
 #include <net/netfilter/nf_conntrack_timeout.h>
+#include <net/netfilter/nf_conntrack_dscpremark_ext.h>
 #include <net/netfilter/nf_conntrack_labels.h>
 #include <net/netfilter/nf_conntrack_synproxy.h>
 #include <net/netfilter/nf_nat.h>
@@ -272,7 +273,7 @@
 static void
 clean_from_lists(struct nf_conn *ct)
 {
-	pr_debug("clean_from_lists(%p)\n", ct);
+	pr_debug("clean_from_lists(%pK)\n", ct);
 	hlist_nulls_del_rcu(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode);
 	hlist_nulls_del_rcu(&ct->tuplehash[IP_CT_DIR_REPLY].hnnode);
 
@@ -365,7 +366,7 @@
 	struct net *net = nf_ct_net(ct);
 	struct nf_conntrack_l4proto *l4proto;
 
-	pr_debug("destroy_conntrack(%p)\n", ct);
+	pr_debug("destroy_conntrack(%pK)\n", ct);
 	NF_CT_ASSERT(atomic_read(&nfct->use) == 0);
 	NF_CT_ASSERT(!timer_pending(&ct->timeout));
 
@@ -396,7 +397,7 @@
 	if (ct->master)
 		nf_ct_put(ct->master);
 
-	pr_debug("destroy_conntrack: returning ct=%p to slab\n", ct);
+	pr_debug("destroy_conntrack: returning ct=%pK to slab\n", ct);
 	nf_conntrack_free(ct);
 }
 
@@ -664,7 +665,7 @@
 	 * confirmed us.
 	 */
 	NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
-	pr_debug("Confirming conntrack %p\n", ct);
+	pr_debug("Confirming conntrack %pK\n", ct);
 	/* We have to check the DYING flag after unlink to prevent
 	 * a race against nf_ct_get_next_corpse() possibly called from
 	 * user context, else we insert an already 'dead' hash, blocking
@@ -1003,6 +1004,7 @@
 	nf_ct_acct_ext_add(ct, GFP_ATOMIC);
 	nf_ct_tstamp_ext_add(ct, GFP_ATOMIC);
 	nf_ct_labels_ext_add(ct);
+	nf_ct_dscpremark_ext_add(ct, GFP_ATOMIC);
 
 	ecache = tmpl ? nf_ct_ecache_find(tmpl) : NULL;
 	nf_ct_ecache_ext_add(ct, ecache ? ecache->ctmask : 0,
@@ -1014,7 +1016,7 @@
 		spin_lock(&nf_conntrack_expect_lock);
 		exp = nf_ct_find_expectation(net, zone, tuple);
 		if (exp) {
-			pr_debug("conntrack: expectation arrives ct=%p exp=%p\n",
+			pr_debug("conntrack: expectation arrives ct=%pK exp=%pK\n",
 				 ct, exp);
 			/* Welcome, Mr. Bond.  We've been expecting you... */
 			__set_bit(IPS_EXPECTED_BIT, &ct->status);
@@ -1105,14 +1107,14 @@
 	} else {
 		/* Once we've had two way comms, always ESTABLISHED. */
 		if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
-			pr_debug("nf_conntrack_in: normal packet for %p\n", ct);
+			pr_debug("nf_conntrack_in:normal packet for %pK\n", ct);
 			*ctinfo = IP_CT_ESTABLISHED;
 		} else if (test_bit(IPS_EXPECTED_BIT, &ct->status)) {
-			pr_debug("nf_conntrack_in: related packet for %p\n",
+			pr_debug("nf_conntrack_in: related packet for %pK\n",
 				 ct);
 			*ctinfo = IP_CT_RELATED;
 		} else {
-			pr_debug("nf_conntrack_in: new packet for %p\n", ct);
+			pr_debug("nf_conntrack_in: new packet for %pK\n", ct);
 			*ctinfo = IP_CT_NEW;
 		}
 		*set_reply = 0;
@@ -1254,7 +1256,7 @@
 	/* Should be unconfirmed, so not in hash table yet */
 	NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
 
-	pr_debug("Altering reply tuple of %p to ", ct);
+	pr_debug("Altering reply tuple of %pK to ", ct);
 	nf_ct_dump_tuple(newreply);
 
 	ct->tuplehash[IP_CT_DIR_REPLY].tuple = *newreply;
@@ -1436,6 +1438,7 @@
 		}
 		spin_unlock(lockp);
 		local_bh_enable();
+		cond_resched();
 	}
 
 	for_each_possible_cpu(cpu) {
@@ -1448,6 +1451,7 @@
 				set_bit(IPS_DYING_BIT, &ct->status);
 		}
 		spin_unlock_bh(&pcpu->lock);
+		cond_resched();
 	}
 	return NULL;
 found:
@@ -1464,6 +1468,8 @@
 	struct nf_conn *ct;
 	unsigned int bucket = 0;
 
+	might_sleep();
+
 	while ((ct = get_next_corpse(net, iter, data, &bucket)) != NULL) {
 		/* Time to push up daises... */
 		if (del_timer(&ct->timeout))
@@ -1472,6 +1478,7 @@
 		/* ... else the timer will get him soon. */
 
 		nf_ct_put(ct);
+		cond_resched();
 	}
 }
 EXPORT_SYMBOL_GPL(nf_ct_iterate_cleanup);
@@ -1520,6 +1527,7 @@
 	nf_conntrack_proto_fini();
 	nf_conntrack_seqadj_fini();
 	nf_conntrack_labels_fini();
+	nf_conntrack_dscpremark_ext_fini();
 	nf_conntrack_helper_fini();
 	nf_conntrack_timeout_fini();
 	nf_conntrack_ecache_fini();
@@ -1708,6 +1716,10 @@
 	       NF_CONNTRACK_VERSION, nf_conntrack_htable_size,
 	       nf_conntrack_max);
 
+	ret = nf_conntrack_dscpremark_ext_init();
+	if (ret < 0)
+		goto err_dscpremark_ext;
+
 	ret = nf_conntrack_expect_init();
 	if (ret < 0)
 		goto err_expect;
@@ -1780,6 +1792,8 @@
 err_acct:
 	nf_conntrack_expect_fini();
 err_expect:
+	nf_conntrack_dscpremark_ext_fini();
+err_dscpremark_ext:
 	return ret;
 }
 
@@ -1859,6 +1873,10 @@
 	ret = nf_conntrack_proto_pernet_init(net);
 	if (ret < 0)
 		goto err_proto;
+
+#ifdef CONFIG_NF_CONNTRACK_CHAIN_EVENTS
+	ATOMIC_INIT_NOTIFIER_HEAD(&net->ct.nf_conntrack_chain);
+#endif
 	return 0;
 
 err_proto: