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

Pull networking updates from David Miller:

 1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan.

 2) Support UDP segmentation in code TSO code, from Eric Dumazet.

 3) Allow flashing different flash images in cxgb4 driver, from Vishal
    Kulkarni.

 4) Add drop frames counter and flow status to tc flower offloading,
    from Po Liu.

 5) Support n-tuple filters in cxgb4, from Vishal Kulkarni.

 6) Various new indirect call avoidance, from Eric Dumazet and Brian
    Vazquez.

 7) Fix BPF verifier failures on 32-bit pointer arithmetic, from
    Yonghong Song.

 8) Support querying and setting hardware address of a port function via
    devlink, use this in mlx5, from Parav Pandit.

 9) Support hw ipsec offload on bonding slaves, from Jarod Wilson.

10) Switch qca8k driver over to phylink, from Jonathan McDowell.

11) In bpftool, show list of processes holding BPF FD references to
    maps, programs, links, and btf objects. From Andrii Nakryiko.

12) Several conversions over to generic power management, from Vaibhav
    Gupta.

13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry
    Yakunin.

14) Various https url conversions, from Alexander A. Klimov.

15) Timestamping and PHC support for mscc PHY driver, from Antoine
    Tenart.

16) Support bpf iterating over tcp and udp sockets, from Yonghong Song.

17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov.

18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan.

19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several
    drivers. From Luc Van Oostenryck.

20) XDP support for xen-netfront, from Denis Kirjanov.

21) Support receive buffer autotuning in MPTCP, from Florian Westphal.

22) Support EF100 chip in sfc driver, from Edward Cree.

23) Add XDP support to mvpp2 driver, from Matteo Croce.

24) Support MPTCP in sock_diag, from Paolo Abeni.

25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic
    infrastructure, from Jakub Kicinski.

26) Several pci_ --> dma_ API conversions, from Christophe JAILLET.

27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel.

28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki.

29) Refactor a lot of networking socket option handling code in order to
    avoid set_fs() calls, from Christoph Hellwig.

30) Add rfc4884 support to icmp code, from Willem de Bruijn.

31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei.

32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin.

33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin.

34) Support TCP syncookies in MPTCP, from Flowian Westphal.

35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano
    Brivio.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits)
  net: thunderx: initialize VF's mailbox mutex before first usage
  usb: hso: remove bogus check for EINPROGRESS
  usb: hso: no complaint about kmalloc failure
  hso: fix bailout in error case of probe
  ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM
  selftests/net: relax cpu affinity requirement in msg_zerocopy test
  mptcp: be careful on subflow creation
  selftests: rtnetlink: make kci_test_encap() return sub-test result
  selftests: rtnetlink: correct the final return value for the test
  net: dsa: sja1105: use detected device id instead of DT one on mismatch
  tipc: set ub->ifindex for local ipv6 address
  ipv6: add ipv6_dev_find()
  net: openvswitch: silence suspicious RCU usage warning
  Revert "vxlan: fix tos value before xmit"
  ptp: only allow phase values lower than 1 period
  farsync: switch from 'pci_' to 'dma_' API
  wan: wanxl: switch from 'pci_' to 'dma_' API
  hv_netvsc: do not use VF device if link is down
  dpaa2-eth: Fix passing zero to 'PTR_ERR' warning
  net: macb: Properly handle phylink on at91sam9x
  ...

1 files changed, 49 insertions, 6 deletions

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 412656c34f20..678c5b14841c 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -210,6 +210,17 @@ static void update_defense_level(struct netns_ipvs *ipvs)
 	local_bh_enable();
 }
 
+/* Handler for delayed work for expiring no
+ * destination connections
+ */
+static void expire_nodest_conn_handler(struct work_struct *work)
+{
+	struct netns_ipvs *ipvs;
+
+	ipvs = container_of(work, struct netns_ipvs,
+			    expire_nodest_conn_work.work);
+	ip_vs_expire_nodest_conn_flush(ipvs);
+}
 
 /*
  *	Timer for checking the defense
@@ -224,7 +235,8 @@ static void defense_work_handler(struct work_struct *work)
 	update_defense_level(ipvs);
 	if (atomic_read(&ipvs->dropentry))
 		ip_vs_random_dropentry(ipvs);
-	schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD);
+	queue_delayed_work(system_long_wq, &ipvs->defense_work,
+			   DEFENSE_TIMER_PERIOD);
 }
 #endif
 
@@ -1163,6 +1175,12 @@ static void __ip_vs_del_dest(struct netns_ipvs *ipvs, struct ip_vs_dest *dest,
 	list_add(&dest->t_list, &ipvs->dest_trash);
 	dest->idle_start = 0;
 	spin_unlock_bh(&ipvs->dest_trash_lock);
+
+	/* Queue up delayed work to expire all no destination connections.
+	 * No-op when CONFIG_SYSCTL is disabled.
+	 */
+	if (!cleanup)
+		ip_vs_enqueue_expire_nodest_conns(ipvs);
 }
 
 
@@ -1272,6 +1290,7 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
 	struct ip_vs_scheduler *sched = NULL;
 	struct ip_vs_pe *pe = NULL;
 	struct ip_vs_service *svc = NULL;
+	int ret_hooks = -1;
 
 	/* increase the module use count */
 	if (!ip_vs_use_count_inc())
@@ -1313,6 +1332,14 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
 	}
 #endif
 
+	if ((u->af == AF_INET && !ipvs->num_services) ||
+	    (u->af == AF_INET6 && !ipvs->num_services6)) {
+		ret = ip_vs_register_hooks(ipvs, u->af);
+		if (ret < 0)
+			goto out_err;
+		ret_hooks = ret;
+	}
+
 	svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL);
 	if (svc == NULL) {
 		IP_VS_DBG(1, "%s(): no memory\n", __func__);
@@ -1374,6 +1401,8 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
 	/* Count only IPv4 services for old get/setsockopt interface */
 	if (svc->af == AF_INET)
 		ipvs->num_services++;
+	else if (svc->af == AF_INET6)
+		ipvs->num_services6++;
 
 	/* Hash the service into the service table */
 	ip_vs_svc_hash(svc);
@@ -1385,6 +1414,8 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
 
 
  out_err:
+	if (ret_hooks >= 0)
+		ip_vs_unregister_hooks(ipvs, u->af);
 	if (svc != NULL) {
 		ip_vs_unbind_scheduler(svc, sched);
 		ip_vs_service_free(svc);
@@ -1500,9 +1531,15 @@ static void __ip_vs_del_service(struct ip_vs_service *svc, bool cleanup)
 	struct ip_vs_pe *old_pe;
 	struct netns_ipvs *ipvs = svc->ipvs;
 
-	/* Count only IPv4 services for old get/setsockopt interface */
-	if (svc->af == AF_INET)
+	if (svc->af == AF_INET) {
 		ipvs->num_services--;
+		if (!ipvs->num_services)
+			ip_vs_unregister_hooks(ipvs, svc->af);
+	} else if (svc->af == AF_INET6) {
+		ipvs->num_services6--;
+		if (!ipvs->num_services6)
+			ip_vs_unregister_hooks(ipvs, svc->af);
+	}
 
 	ip_vs_stop_estimator(svc->ipvs, &svc->stats);
 
@@ -2414,7 +2451,7 @@ static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest,
 }
 
 static int
-do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
+do_ip_vs_set_ctl(struct sock *sk, int cmd, sockptr_t ptr, unsigned int len)
 {
 	struct net *net = sock_net(sk);
 	int ret;
@@ -2438,7 +2475,7 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
 		return -EINVAL;
 	}
 
-	if (copy_from_user(arg, user, len) != 0)
+	if (copy_from_sockptr(arg, ptr, len) != 0)
 		return -EFAULT;
 
 	/* Handle daemons since they have another lock */
@@ -4063,7 +4100,12 @@ static int __net_init ip_vs_control_net_init_sysctl(struct netns_ipvs *ipvs)
 	ipvs->sysctl_tbl = tbl;
 	/* Schedule defense work */
 	INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler);
-	schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD);
+	queue_delayed_work(system_long_wq, &ipvs->defense_work,
+			   DEFENSE_TIMER_PERIOD);
+
+	/* Init delayed work for expiring no dest conn */
+	INIT_DELAYED_WORK(&ipvs->expire_nodest_conn_work,
+			  expire_nodest_conn_handler);
 
 	return 0;
 }
@@ -4072,6 +4114,7 @@ static void __net_exit ip_vs_control_net_cleanup_sysctl(struct netns_ipvs *ipvs)
 {
 	struct net *net = ipvs->net;
 
+	cancel_delayed_work_sync(&ipvs->expire_nodest_conn_work);
 	cancel_delayed_work_sync(&ipvs->defense_work);
 	cancel_work_sync(&ipvs->defense_work.work);
 	unregister_net_sysctl_table(ipvs->sysctl_hdr);