Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR (net-7.0-rc8).

Conflicts:

net/ipv6/seg6_iptunnel.c
  c3812651b5 ("seg6: separate dst_cache for input and output paths in seg6 lwtunnel")
  78723a62b9 ("seg6: add per-route tunnel source address")
https://lore.kernel.org/adZhwtOYfo-0ImSa@sirena.org.uk

net/ipv4/icmp.c
  fde29fd934 ("ipv4: icmp: fix null-ptr-deref in icmp_build_probe()")
  d98adfbdd5 ("ipv4: drop ipv6_stub usage and use direct function calls")
https://lore.kernel.org/adO3dccqnr6j-BL9@sirena.org.uk

Adjacent changes:

drivers/net/ethernet/stmicro/stmmac/chain_mode.c
  51f4e090b9 ("net: stmmac: fix integer underflow in chain mode")
  6b4286e055 ("net: stmmac: rename STMMAC_GET_ENTRY() -> STMMAC_NEXT_ENTRY()")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/netfilter/ipvs/ip_vs_ctl.c

@@ -1752,7 +1752,6 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
 		ret = ip_vs_bind_scheduler(svc, sched);
 		if (ret)
 			goto out_err;
-		sched = NULL;
 	}
 
 	ret = ip_vs_start_estimator(ipvs, &svc->stats);

net/netfilter/nfnetlink_log.c

@@ -361,10 +361,10 @@ static void
 __nfulnl_send(struct nfulnl_instance *inst)
 {
 	if (inst->qlen > 1) {
-		struct nlmsghdr *nlh = nlmsg_put(inst->skb, 0, 0,
-						 NLMSG_DONE,
-						 sizeof(struct nfgenmsg),
-						 0);
+		struct nlmsghdr *nlh = nfnl_msg_put(inst->skb, 0, 0,
+						    NLMSG_DONE, 0,
+						    AF_UNSPEC, NFNETLINK_V0,
+						    htons(inst->group_num));
 		if (WARN_ONCE(!nlh, "bad nlskb size: %u, tailroom %d\n",
 			      inst->skb->len, skb_tailroom(inst->skb))) {
 			kfree_skb(inst->skb);

net/netfilter/nfnetlink_queue.c

@@ -49,8 +49,8 @@
 #endif
 
 #define NFQNL_QMAX_DEFAULT 1024
-#define NFQNL_HASH_MIN     1024
-#define NFQNL_HASH_MAX     1048576
+#define NFQNL_HASH_MIN     8
+#define NFQNL_HASH_MAX     32768
 
 /* We're using struct nlattr which has 16bit nla_len. Note that nla_len
  * includes the header length. Thus, the maximum packet length that we
@@ -60,29 +60,10 @@
  */
 #define NFQNL_MAX_COPY_RANGE (0xffff - NLA_HDRLEN)
 
-/* Composite key for packet lookup: (net, queue_num, packet_id) */
-struct nfqnl_packet_key {
-	possible_net_t net;
-	u32 packet_id;
-	u16 queue_num;
-} __aligned(sizeof(u32));  /* jhash2 requires 32-bit alignment */
-
-/* Global rhashtable - one for entire system, all netns */
-static struct rhashtable nfqnl_packet_map __read_mostly;
-
-/* Helper to initialize composite key */
-static inline void nfqnl_init_key(struct nfqnl_packet_key *key,
-				  struct net *net, u32 packet_id, u16 queue_num)
-{
-	memset(key, 0, sizeof(*key));
-	write_pnet(&key->net, net);
-	key->packet_id = packet_id;
-	key->queue_num = queue_num;
-}
-
 struct nfqnl_instance {
 	struct hlist_node hlist;		/* global list of queues */
-	struct rcu_head rcu;
+	struct rhashtable nfqnl_packet_map;
+	struct rcu_work	rwork;
 
 	u32 peer_portid;
 	unsigned int queue_maxlen;
@@ -106,6 +87,7 @@ struct nfqnl_instance {
 
 typedef int (*nfqnl_cmpfn)(struct nf_queue_entry *, unsigned long);
 
+static struct workqueue_struct *nfq_cleanup_wq __read_mostly;
 static unsigned int nfnl_queue_net_id __read_mostly;
 
 #define INSTANCE_BUCKETS	16
@@ -124,34 +106,10 @@ static inline u_int8_t instance_hashfn(u_int16_t queue_num)
 	return ((queue_num >> 8) ^ queue_num) % INSTANCE_BUCKETS;
 }
 
-/* Extract composite key from nf_queue_entry for hashing */
-static u32 nfqnl_packet_obj_hashfn(const void *data, u32 len, u32 seed)
-{
-	const struct nf_queue_entry *entry = data;
-	struct nfqnl_packet_key key;
-
-	nfqnl_init_key(&key, entry->state.net, entry->id, entry->queue_num);
-
-	return jhash2((u32 *)&key, sizeof(key) / sizeof(u32), seed);
-}
-
-/* Compare stack-allocated key against entry */
-static int nfqnl_packet_obj_cmpfn(struct rhashtable_compare_arg *arg,
-				  const void *obj)
-{
-	const struct nfqnl_packet_key *key = arg->key;
-	const struct nf_queue_entry *entry = obj;
-
-	return !net_eq(entry->state.net, read_pnet(&key->net)) ||
-	       entry->queue_num != key->queue_num ||
-	       entry->id != key->packet_id;
-}
-
 static const struct rhashtable_params nfqnl_rhashtable_params = {
 	.head_offset = offsetof(struct nf_queue_entry, hash_node),
-	.key_len = sizeof(struct nfqnl_packet_key),
-	.obj_hashfn = nfqnl_packet_obj_hashfn,
-	.obj_cmpfn = nfqnl_packet_obj_cmpfn,
+	.key_offset = offsetof(struct nf_queue_entry, id),
+	.key_len = sizeof(u32),
 	.automatic_shrinking = true,
 	.min_size = NFQNL_HASH_MIN,
 	.max_size = NFQNL_HASH_MAX,
@@ -190,6 +148,10 @@ instance_create(struct nfnl_queue_net *q, u_int16_t queue_num, u32 portid)
 	spin_lock_init(&inst->lock);
 	INIT_LIST_HEAD(&inst->queue_list);
 
+	err = rhashtable_init(&inst->nfqnl_packet_map, &nfqnl_rhashtable_params);
+	if (err < 0)
+		goto out_free;
+
 	spin_lock(&q->instances_lock);
 	if (instance_lookup(q, queue_num)) {
 		err = -EEXIST;
@@ -210,6 +172,8 @@ instance_create(struct nfnl_queue_net *q, u_int16_t queue_num, u32 portid)
 
 out_unlock:
 	spin_unlock(&q->instances_lock);
+	rhashtable_destroy(&inst->nfqnl_packet_map);
+out_free:
 	kfree(inst);
 	return ERR_PTR(err);
 }
@@ -217,15 +181,18 @@ out_unlock:
 static void nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn,
 			unsigned long data);
 
-static void
-instance_destroy_rcu(struct rcu_head *head)
+static void instance_destroy_work(struct work_struct *work)
 {
-	struct nfqnl_instance *inst = container_of(head, struct nfqnl_instance,
-						   rcu);
+	struct nfqnl_instance *inst;
 
+	inst = container_of(to_rcu_work(work), struct nfqnl_instance,
+			    rwork);
 	rcu_read_lock();
 	nfqnl_flush(inst, NULL, 0);
 	rcu_read_unlock();
+
+	rhashtable_destroy(&inst->nfqnl_packet_map);
+
 	kfree(inst);
 	module_put(THIS_MODULE);
 }
@@ -234,7 +201,9 @@ static void
 __instance_destroy(struct nfqnl_instance *inst)
 {
 	hlist_del_rcu(&inst->hlist);
-	call_rcu(&inst->rcu, instance_destroy_rcu);
+
+	INIT_RCU_WORK(&inst->rwork, instance_destroy_work);
+	queue_rcu_work(nfq_cleanup_wq, &inst->rwork);
 }
 
 static void
@@ -250,9 +219,7 @@ __enqueue_entry(struct nfqnl_instance *queue, struct nf_queue_entry *entry)
 {
 	int err;
 
-	entry->queue_num = queue->queue_num;
-
-	err = rhashtable_insert_fast(&nfqnl_packet_map, &entry->hash_node,
+	err = rhashtable_insert_fast(&queue->nfqnl_packet_map, &entry->hash_node,
 				     nfqnl_rhashtable_params);
 	if (unlikely(err))
 		return err;
@@ -266,23 +233,19 @@ __enqueue_entry(struct nfqnl_instance *queue, struct nf_queue_entry *entry)
 static void
 __dequeue_entry(struct nfqnl_instance *queue, struct nf_queue_entry *entry)
 {
-	rhashtable_remove_fast(&nfqnl_packet_map, &entry->hash_node,
+	rhashtable_remove_fast(&queue->nfqnl_packet_map, &entry->hash_node,
 			       nfqnl_rhashtable_params);
 	list_del(&entry->list);
 	queue->queue_total--;
 }
 
 static struct nf_queue_entry *
-find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id,
-		   struct net *net)
+find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id)
 {
-	struct nfqnl_packet_key key;
 	struct nf_queue_entry *entry;
 
-	nfqnl_init_key(&key, net, id, queue->queue_num);
-
 	spin_lock_bh(&queue->lock);
-	entry = rhashtable_lookup_fast(&nfqnl_packet_map, &key,
+	entry = rhashtable_lookup_fast(&queue->nfqnl_packet_map, &id,
 				       nfqnl_rhashtable_params);
 
 	if (entry)
@@ -1545,7 +1508,7 @@ static int nfqnl_recv_verdict(struct sk_buff *skb, const struct nfnl_info *info,
 
 	verdict = ntohl(vhdr->verdict);
 
-	entry = find_dequeue_entry(queue, ntohl(vhdr->id), info->net);
+	entry = find_dequeue_entry(queue, ntohl(vhdr->id));
 	if (entry == NULL)
 		return -ENOENT;
 
@@ -1894,40 +1857,38 @@ static int __init nfnetlink_queue_init(void)
 {
 	int status;
 
-	status = rhashtable_init(&nfqnl_packet_map, &nfqnl_rhashtable_params);
-	if (status < 0)
-		return status;
+	nfq_cleanup_wq = alloc_ordered_workqueue("nfq_workqueue", 0);
+	if (!nfq_cleanup_wq)
+		return -ENOMEM;
 
 	status = register_pernet_subsys(&nfnl_queue_net_ops);
-	if (status < 0) {
-		pr_err("failed to register pernet ops\n");
-		goto cleanup_rhashtable;
-	}
+	if (status < 0)
+		goto cleanup_pernet_subsys;
 
-	netlink_register_notifier(&nfqnl_rtnl_notifier);
-	status = nfnetlink_subsys_register(&nfqnl_subsys);
-	if (status < 0) {
-		pr_err("failed to create netlink socket\n");
-		goto cleanup_netlink_notifier;
-	}
+	status = netlink_register_notifier(&nfqnl_rtnl_notifier);
+	if (status < 0)
+	       goto cleanup_rtnl_notifier;
 
 	status = register_netdevice_notifier(&nfqnl_dev_notifier);
-	if (status < 0) {
-		pr_err("failed to register netdevice notifier\n");
-		goto cleanup_netlink_subsys;
-	}
+	if (status < 0)
+		goto cleanup_dev_notifier;
+
+	status = nfnetlink_subsys_register(&nfqnl_subsys);
+	if (status < 0)
+		goto cleanup_nfqnl_subsys;
 
 	nf_register_queue_handler(&nfqh);
 
 	return status;
 
-cleanup_netlink_subsys:
-	nfnetlink_subsys_unregister(&nfqnl_subsys);
-cleanup_netlink_notifier:
+cleanup_nfqnl_subsys:
+	unregister_netdevice_notifier(&nfqnl_dev_notifier);
+cleanup_dev_notifier:
 	netlink_unregister_notifier(&nfqnl_rtnl_notifier);
+cleanup_rtnl_notifier:
 	unregister_pernet_subsys(&nfnl_queue_net_ops);
-cleanup_rhashtable:
-	rhashtable_destroy(&nfqnl_packet_map);
+cleanup_pernet_subsys:
+	destroy_workqueue(nfq_cleanup_wq);
 	return status;
 }
 
@@ -1938,9 +1899,7 @@ static void __exit nfnetlink_queue_fini(void)
 	nfnetlink_subsys_unregister(&nfqnl_subsys);
 	netlink_unregister_notifier(&nfqnl_rtnl_notifier);
 	unregister_pernet_subsys(&nfnl_queue_net_ops);
-
-	rhashtable_destroy(&nfqnl_packet_map);
-
+	destroy_workqueue(nfq_cleanup_wq);
 	rcu_barrier(); /* Wait for completion of call_rcu()'s */
 }
 

net/netfilter/nft_ct.c

@@ -974,7 +974,7 @@ static void nft_ct_timeout_obj_destroy(const struct nft_ctx *ctx,
 	nf_queue_nf_hook_drop(ctx->net);
 	nf_ct_untimeout(ctx->net, timeout);
 	nf_ct_netns_put(ctx->net, ctx->family);
-	kfree(priv->timeout);
+	kfree_rcu(priv->timeout, rcu);
 }
 
 static int nft_ct_timeout_obj_dump(struct sk_buff *skb,

net/netfilter/xt_multiport.c

@@ -105,6 +105,28 @@ multiport_mt(const struct sk_buff *skb, struct xt_action_param *par)
 	return ports_match_v1(multiinfo, ntohs(pptr[0]), ntohs(pptr[1]));
 }
 
+static bool
+multiport_valid_ranges(const struct xt_multiport_v1 *multiinfo)
+{
+	unsigned int i;
+
+	for (i = 0; i < multiinfo->count; i++) {
+		if (!multiinfo->pflags[i])
+			continue;
+
+		if (++i >= multiinfo->count)
+			return false;
+
+		if (multiinfo->pflags[i])
+			return false;
+
+		if (multiinfo->ports[i - 1] > multiinfo->ports[i])
+			return false;
+	}
+
+	return true;
+}
+
 static inline bool
 check(u_int16_t proto,
       u_int8_t ip_invflags,
@@ -127,8 +149,10 @@ static int multiport_mt_check(const struct xt_mtchk_param *par)
 	const struct ipt_ip *ip = par->entryinfo;
 	const struct xt_multiport_v1 *multiinfo = par->matchinfo;
 
-	return check(ip->proto, ip->invflags, multiinfo->flags,
-		     multiinfo->count) ? 0 : -EINVAL;
+	if (!check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count))
+		return -EINVAL;
+
+	return multiport_valid_ranges(multiinfo) ? 0 : -EINVAL;
 }
 
 static int multiport_mt6_check(const struct xt_mtchk_param *par)
@@ -136,8 +160,10 @@ static int multiport_mt6_check(const struct xt_mtchk_param *par)
 	const struct ip6t_ip6 *ip = par->entryinfo;
 	const struct xt_multiport_v1 *multiinfo = par->matchinfo;
 
-	return check(ip->proto, ip->invflags, multiinfo->flags,
-		     multiinfo->count) ? 0 : -EINVAL;
+	if (!check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count))
+		return -EINVAL;
+
+	return multiport_valid_ranges(multiinfo) ? 0 : -EINVAL;
 }
 
 static struct xt_match multiport_mt_reg[] __read_mostly = {