Merge tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - bpf:
        - allow bpf programs calling kernel functions (initially to
          reuse TCP congestion control implementations)
        - enable task local storage for tracing programs - remove the
          need to store per-task state in hash maps, and allow tracing
          programs access to task local storage previously added for
          BPF_LSM
        - add bpf_for_each_map_elem() helper, allowing programs to walk
          all map elements in a more robust and easier to verify fashion
        - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT
          redirection
        - lpm: add support for batched ops in LPM trie
        - add BTF_KIND_FLOAT support - mostly to allow use of BTF on
          s390 which has floats in its headers files
        - improve BPF syscall documentation and extend the use of kdoc
          parsing scripts we already employ for bpf-helpers
        - libbpf, bpftool: support static linking of BPF ELF files
        - improve support for encapsulation of L2 packets

   - xdp: restructure redirect actions to avoid a runtime lookup,
     improving performance by 4-8% in microbenchmarks

   - xsk: build skb by page (aka generic zerocopy xmit) - improve
     performance of software AF_XDP path by 33% for devices which don't
     need headers in the linear skb part (e.g. virtio)

   - nexthop: resilient next-hop groups - improve path stability on
     next-hops group changes (incl. offload for mlxsw)

   - ipv6: segment routing: add support for IPv4 decapsulation

   - icmp: add support for RFC 8335 extended PROBE messages

   - inet: use bigger hash table for IP ID generation

   - tcp: deal better with delayed TX completions - make sure we don't
     give up on fast TCP retransmissions only because driver is slow in
     reporting that it completed transmitting the original

   - tcp: reorder tcp_congestion_ops for better cache locality

   - mptcp:
        - add sockopt support for common TCP options
        - add support for common TCP msg flags
        - include multiple address ids in RM_ADDR
        - add reset option support for resetting one subflow

   - udp: GRO L4 improvements - improve 'forward' / 'frag_list'
     co-existence with UDP tunnel GRO, allowing the first to take place
     correctly even for encapsulated UDP traffic

   - micro-optimize dev_gro_receive() and flow dissection, avoid
     retpoline overhead on VLAN and TEB GRO

   - use less memory for sysctls, add a new sysctl type, to allow using
     u8 instead of "int" and "long" and shrink networking sysctls

   - veth: allow GRO without XDP - this allows aggregating UDP packets
     before handing them off to routing, bridge, OvS, etc.

   - allow specifing ifindex when device is moved to another namespace

   - netfilter:
        - nft_socket: add support for cgroupsv2
        - nftables: add catch-all set element - special element used to
          define a default action in case normal lookup missed
        - use net_generic infra in many modules to avoid allocating
          per-ns memory unnecessarily

   - xps: improve the xps handling to avoid potential out-of-bound
     accesses and use-after-free when XPS change race with other
     re-configuration under traffic

   - add a config knob to turn off per-cpu netdev refcnt to catch
     underflows in testing

  Device APIs:

   - add WWAN subsystem to organize the WWAN interfaces better and
     hopefully start driving towards more unified and vendor-
     independent APIs

   - ethtool:
        - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt
          support)
        - allow network drivers to dump arbitrary SFP EEPROM data,
          current offset+length API was a poor fit for modern SFP which
          define EEPROM in terms of pages (incl. mlx5 support)

   - act_police, flow_offload: add support for packet-per-second
     policing (incl. offload for nfp)

   - psample: add additional metadata attributes like transit delay for
     packets sampled from switch HW (and corresponding egress and
     policy-based sampling in the mlxsw driver)

   - dsa: improve support for sandwiched LAGs with bridge and DSA

   - netfilter:
        - flowtable: use direct xmit in topologies with IP forwarding,
          bridging, vlans etc.
        - nftables: counter hardware offload support

   - Bluetooth:
        - improvements for firmware download w/ Intel devices
        - add support for reading AOSP vendor capabilities
        - add support for virtio transport driver

   - mac80211:
        - allow concurrent monitor iface and ethernet rx decap
        - set priority and queue mapping for injected frames

   - phy: add support for Clause-45 PHY Loopback

   - pci/iov: add sysfs MSI-X vector assignment interface to distribute
     MSI-X resources to VFs (incl. mlx5 support)

  New hardware/drivers:

   - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port
     Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit
     interfaces.

   - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and
     BCM63xx switches

   - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches

   - ath11k: support for QCN9074 a 802.11ax device

   - Bluetooth: Broadcom BCM4330 and BMC4334

   - phy: Marvell 88X2222 transceiver support

   - mdio: add BCM6368 MDIO mux bus controller

   - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips

   - mana: driver for Microsoft Azure Network Adapter (MANA)

   - Actions Semi Owl Ethernet MAC

   - can: driver for ETAS ES58X CAN/USB interfaces

  Pure driver changes:

   - add XDP support to: enetc, igc, stmmac

   - add AF_XDP support to: stmmac

   - virtio:
        - page_to_skb() use build_skb when there's sufficient tailroom
          (21% improvement for 1000B UDP frames)
        - support XDP even without dedicated Tx queues - share the Tx
          queues with the stack when necessary

   - mlx5:
        - flow rules: add support for mirroring with conntrack, matching
          on ICMP, GTP, flex filters and more
        - support packet sampling with flow offloads
        - persist uplink representor netdev across eswitch mode changes
        - allow coexistence of CQE compression and HW time-stamping
        - add ethtool extended link error state reporting

   - ice, iavf: support flow filters, UDP Segmentation Offload

   - dpaa2-switch:
        - move the driver out of staging
        - add spanning tree (STP) support
        - add rx copybreak support
        - add tc flower hardware offload on ingress traffic

   - ionic:
        - implement Rx page reuse
        - support HW PTP time-stamping

   - octeon: support TC hardware offloads - flower matching on ingress
     and egress ratelimitting.

   - stmmac:
        - add RX frame steering based on VLAN priority in tc flower
        - support frame preemption (FPE)
        - intel: add cross time-stamping freq difference adjustment

   - ocelot:
        - support forwarding of MRP frames in HW
        - support multiple bridges
        - support PTP Sync one-step timestamping

   - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like
     learning, flooding etc.

   - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350,
     SC7280 SoCs)

   - mt7601u: enable TDLS support

   - mt76:
        - add support for 802.3 rx frames (mt7915/mt7615)
        - mt7915 flash pre-calibration support
        - mt7921/mt7663 runtime power management fixes"

* tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits)
  net: selftest: fix build issue if INET is disabled
  net: netrom: nr_in: Remove redundant assignment to ns
  net: tun: Remove redundant assignment to ret
  net: phy: marvell: add downshift support for M88E1240
  net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255
  net/sched: act_ct: Remove redundant ct get and check
  icmp: standardize naming of RFC 8335 PROBE constants
  bpf, selftests: Update array map tests for per-cpu batched ops
  bpf: Add batched ops support for percpu array
  bpf: Implement formatted output helpers with bstr_printf
  seq_file: Add a seq_bprintf function
  sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues
  net:nfc:digital: Fix a double free in digital_tg_recv_dep_req
  net: fix a concurrency bug in l2tp_tunnel_register()
  net/smc: Remove redundant assignment to rc
  mpls: Remove redundant assignment to err
  llc2: Remove redundant assignment to rc
  net/tls: Remove redundant initialization of record
  rds: Remove redundant assignment to nr_sig
  dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0
  ...

1 files changed, 43 insertions, 24 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 805ce546b813..fa9125b782f8 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -851,6 +851,10 @@ static u8 update_white_list(struct hci_request *req)
 	 */
 	bool allow_rpa = hdev->suspended;
 
+	if (use_ll_privacy(hdev) &&
+	    hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY))
+		allow_rpa = true;
+
 	/* Go through the current white list programmed into the
 	 * controller one by one and check if that address is still
 	 * in the list of pending connections or list of devices to
@@ -1135,14 +1139,14 @@ static void hci_req_clear_event_filter(struct hci_request *req)
 {
 	struct hci_cp_set_event_filter f;
 
-	memset(&f, 0, sizeof(f));
-	f.flt_type = HCI_FLT_CLEAR_ALL;
-	hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &f);
+	if (!hci_dev_test_flag(req->hdev, HCI_BREDR_ENABLED))
+		return;
 
-	/* Update page scan state (since we may have modified it when setting
-	 * the event filter).
-	 */
-	__hci_req_update_scan(req);
+	if (hci_dev_test_flag(req->hdev, HCI_EVENT_FILTER_CONFIGURED)) {
+		memset(&f, 0, sizeof(f));
+		f.flt_type = HCI_FLT_CLEAR_ALL;
+		hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &f);
+	}
 }
 
 static void hci_req_set_event_filter(struct hci_request *req)
@@ -1151,6 +1155,10 @@ static void hci_req_set_event_filter(struct hci_request *req)
 	struct hci_cp_set_event_filter f;
 	struct hci_dev *hdev = req->hdev;
 	u8 scan = SCAN_DISABLED;
+	bool scanning = test_bit(HCI_PSCAN, &hdev->flags);
+
+	if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
+		return;
 
 	/* Always clear event filter when starting */
 	hci_req_clear_event_filter(req);
@@ -1171,12 +1179,13 @@ static void hci_req_set_event_filter(struct hci_request *req)
 		scan = SCAN_PAGE;
 	}
 
-	if (scan)
+	if (scan && !scanning) {
 		set_bit(SUSPEND_SCAN_ENABLE, hdev->suspend_tasks);
-	else
+		hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+	} else if (!scan && scanning) {
 		set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
-
-	hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+		hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+	}
 }
 
 static void cancel_adv_timeout(struct hci_dev *hdev)
@@ -1319,9 +1328,14 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 
 		hdev->advertising_paused = true;
 		hdev->advertising_old_state = old_state;
-		/* Disable page scan */
-		page_scan = SCAN_DISABLED;
-		hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &page_scan);
+
+		/* Disable page scan if enabled */
+		if (test_bit(HCI_PSCAN, &hdev->flags)) {
+			page_scan = SCAN_DISABLED;
+			hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1,
+				    &page_scan);
+			set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
+		}
 
 		/* Disable LE passive scan if enabled */
 		if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
@@ -1332,9 +1346,6 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 		/* Disable advertisement filters */
 		hci_req_add_set_adv_filter_enable(&req, false);
 
-		/* Mark task needing completion */
-		set_bit(SUSPEND_SCAN_DISABLE, hdev->suspend_tasks);
-
 		/* Prevent disconnects from causing scanning to be re-enabled */
 		hdev->scanning_paused = true;
 
@@ -1368,7 +1379,10 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
 		hdev->suspended = false;
 		hdev->scanning_paused = false;
 
+		/* Clear any event filters and restore scan state */
 		hci_req_clear_event_filter(&req);
+		__hci_req_update_scan(&req);
+
 		/* Reset passive/background scanning to normal */
 		__hci_update_background_scan(&req);
 		/* Enable all of the advertisement filters */
@@ -1641,9 +1655,8 @@ static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
 {
 	u8 scan_rsp_len = 0;
 
-	if (hdev->appearance) {
+	if (hdev->appearance)
 		scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len);
-	}
 
 	return append_local_name(hdev, ptr, scan_rsp_len);
 }
@@ -1661,9 +1674,8 @@ static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
 
 	instance_flags = adv_instance->flags;
 
-	if ((instance_flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) {
+	if ((instance_flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance)
 		scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len);
-	}
 
 	memcpy(&ptr[scan_rsp_len], adv_instance->scan_rsp_data,
 	       adv_instance->scan_rsp_len);
@@ -2039,7 +2051,8 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
 		/* If Controller supports LL Privacy use own address type is
 		 * 0x03
 		 */
-		if (use_ll_privacy(hdev))
+		if (use_ll_privacy(hdev) &&
+		    hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY))
 			*own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
 		else
 			*own_addr_type = ADDR_LE_DEV_RANDOM;
@@ -2174,7 +2187,8 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
 		else
 			cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
-	} else if (adv_instance_is_scannable(hdev, instance)) {
+	} else if (adv_instance_is_scannable(hdev, instance) ||
+		   (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
 		if (secondary_adv)
 			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
 		else
@@ -2512,7 +2526,8 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
 		/* If Controller supports LL Privacy use own address type is
 		 * 0x03
 		 */
-		if (use_ll_privacy(hdev))
+		if (use_ll_privacy(hdev) &&
+		    hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY))
 			*own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
 		else
 			*own_addr_type = ADDR_LE_DEV_RANDOM;
@@ -2945,6 +2960,9 @@ static int bredr_inquiry(struct hci_request *req, unsigned long opt)
 	const u8 liac[3] = { 0x00, 0x8b, 0x9e };
 	struct hci_cp_inquiry cp;
 
+	if (test_bit(HCI_INQUIRY, &req->hdev->flags))
+		return 0;
+
 	bt_dev_dbg(req->hdev, "");
 
 	hci_dev_lock(req->hdev);
@@ -3245,6 +3263,7 @@ bool hci_req_stop_discovery(struct hci_request *req)
 
 		if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
 			cancel_delayed_work(&hdev->le_scan_disable);
+			cancel_delayed_work(&hdev->le_scan_restart);
 			hci_req_add_le_scan_disable(req, false);
 		}