Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Remove socket skb caches

   - Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
     avoid memory accounting overhead on each message sent

   - Introduce managed neighbor entries - added by control plane and
     resolved by the kernel for use in acceleration paths (BPF / XDP
     right now, HW offload users will benefit as well)

   - Make neighbor eviction on link down controllable by userspace to
     work around WiFi networks with bad roaming implementations

   - vrf: Rework interaction with netfilter/conntrack

   - fq_codel: implement L4S style ce_threshold_ect1 marking

   - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()

  BPF:

   - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
     as implemented in LLVM14

   - Introduce bpf_get_branch_snapshot() to capture Last Branch Records

   - Implement variadic trace_printk helper

   - Add a new Bloomfilter map type

   - Track <8-byte scalar spill and refill

   - Access hw timestamp through BPF's __sk_buff

   - Disallow unprivileged BPF by default

   - Document BPF licensing

  Netfilter:

   - Introduce egress hook for looking at raw outgoing packets

   - Allow matching on and modifying inner headers / payload data

   - Add NFT_META_IFTYPE to match on the interface type either from
     ingress or egress

  Protocols:

   - Multi-Path TCP:
      - increase default max additional subflows to 2
      - rework forward memory allocation
      - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS

   - MCTP flow support allowing lower layer drivers to configure msg
     muxing as needed

   - Automatic Multicast Tunneling (AMT) driver based on RFC7450

   - HSR support the redbox supervision frames (IEC-62439-3:2018)

   - Support for the ip6ip6 encapsulation of IOAM

   - Netlink interface for CAN-FD's Transmitter Delay Compensation

   - Support SMC-Rv2 eliminating the current same-subnet restriction, by
     exploiting the UDP encapsulation feature of RoCE adapters

   - TLS: add SM4 GCM/CCM crypto support

   - Bluetooth: initial support for link quality and audio/codec offload

  Driver APIs:

   - Add a batched interface for RX buffer allocation in AF_XDP buffer
     pool

   - ethtool: Add ability to control transceiver modules' power mode

   - phy: Introduce supported interfaces bitmap to express MAC
     capabilities and simplify PHY code

   - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks

  New drivers:

   - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)

   - Ethernet driver for ASIX AX88796C SPI device (x88796c)

  Drivers:

   - Broadcom PHYs
      - support 72165, 7712 16nm PHYs
      - support IDDQ-SR for additional power savings

   - PHY support for QCA8081, QCA9561 PHYs

   - NXP DPAA2: support for IRQ coalescing

   - NXP Ethernet (enetc): support for software TCP segmentation

   - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
     Gigabit-capable IP found on RZ/G2L SoC

   - Intel 100G Ethernet
      - support for eswitch offload of TC/OvS flow API, including
        offload of GRE, VxLAN, Geneve tunneling
      - support application device queues - ability to assign Rx and Tx
        queues to application threads
      - PTP and PPS (pulse-per-second) extensions

   - Broadcom Ethernet (bnxt)
      - devlink health reporting and device reload extensions

   - Mellanox Ethernet (mlx5)
      - offload macvlan interfaces
      - support HW offload of TC rules involving OVS internal ports
      - support HW-GRO and header/data split
      - support application device queues

   - Marvell OcteonTx2:
      - add XDP support for PF
      - add PTP support for VF

   - Qualcomm Ethernet switch (qca8k): support for QCA8328

   - Realtek Ethernet DSA switch (rtl8366rb)
      - support bridge offload
      - support STP, fast aging, disabling address learning
      - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch

   - Mellanox Ethernet/IB switch (mlxsw)
      - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
      - offload root TBF qdisc as port shaper
      - support multiple routing interface MAC address prefixes
      - support for IP-in-IP with IPv6 underlay

   - MediaTek WiFi (mt76)
      - mt7921 - ASPM, 6GHz, SDIO and testmode support
      - mt7915 - LED and TWT support

   - Qualcomm WiFi (ath11k)
      - include channel rx and tx time in survey dump statistics
      - support for 80P80 and 160 MHz bandwidths
      - support channel 2 in 6 GHz band
      - spectral scan support for QCN9074
      - support for rx decapsulation offload (data frames in 802.3
        format)

   - Qualcomm phone SoC WiFi (wcn36xx)
      - enable Idle Mode Power Save (IMPS) to reduce power consumption
        during idle

   - Bluetooth driver support for MediaTek MT7922 and MT7921

   - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
     Realtek 8822C/8852A

   - Microsoft vNIC driver (mana)
      - support hibernation and kexec

   - Google vNIC driver (gve)
      - support for jumbo frames
      - implement Rx page reuse

  Refactor:

   - Make all writes to netdev->dev_addr go thru helpers, so that we can
     add this address to the address rbtree and handle the updates

   - Various TCP cleanups and optimizations including improvements to
     CPU cache use

   - Simplify the gnet_stats, Qdisc stats' handling and remove
     qdisc->running sequence counter

   - Driver changes and API updates to address devlink locking
     deficiencies"

* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
  Revert "net: avoid double accounting for pure zerocopy skbs"
  selftests: net: add arp_ndisc_evict_nocarrier
  net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
  net: arp: introduce arp_evict_nocarrier sysctl parameter
  libbpf: Deprecate AF_XDP support
  kbuild: Unify options for BTF generation for vmlinux and modules
  selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
  bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
  bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
  net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
  net: avoid double accounting for pure zerocopy skbs
  tcp: rename sk_wmem_free_skb
  netdevsim: fix uninit value in nsim_drv_configure_vfs()
  selftests/bpf: Fix also no-alu32 strobemeta selftest
  bpf: Add missing map_delete_elem method to bloom filter map
  selftests/bpf: Add bloom map success test for userspace calls
  bpf: Add alignment padding for "map_extra" + consolidate holes
  bpf: Bloom filter map naming fixups
  selftests/bpf: Add test cases for struct_ops prog
  bpf: Add dummy BPF STRUCT_OPS for test purpose
  ...

1 files changed, 43 insertions, 58 deletions

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 604f54112665..af4761968733 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1222,7 +1222,7 @@ static void b53_adjust_link(struct dsa_switch *ds, int port,
 		return;
 
 	/* Enable flow control on BCM5301x's CPU port */
-	if (is5301x(dev) && port == dev->cpu_port)
+	if (is5301x(dev) && dsa_is_cpu_port(ds, port))
 		tx_pause = rx_pause = true;
 
 	if (phydev->pause) {
@@ -1291,12 +1291,6 @@ static void b53_adjust_link(struct dsa_switch *ds, int port,
 				return;
 			}
 		}
-	} else if (is5301x(dev)) {
-		if (port != dev->cpu_port) {
-			b53_force_port_config(dev, dev->cpu_port, 2000,
-					      DUPLEX_FULL, true, true);
-			b53_force_link(dev, dev->cpu_port, 1);
-		}
 	}
 
 	/* Re-negotiate EEE if it was enabled already */
@@ -1349,10 +1343,8 @@ void b53_phylink_validate(struct dsa_switch *ds, int port,
 		phylink_set(mask, 100baseT_Full);
 	}
 
-	bitmap_and(supported, supported, mask,
-		   __ETHTOOL_LINK_MODE_MASK_NBITS);
-	bitmap_and(state->advertising, state->advertising, mask,
-		   __ETHTOOL_LINK_MODE_MASK_NBITS);
+	linkmode_and(supported, supported, mask);
+	linkmode_and(state->advertising, state->advertising, mask);
 
 	phylink_helper_basex_speed(state);
 }
@@ -1550,7 +1542,7 @@ int b53_vlan_del(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL(b53_vlan_del);
 
-/* Address Resolution Logic routines */
+/* Address Resolution Logic routines. Caller must hold &dev->arl_mutex. */
 static int b53_arl_op_wait(struct b53_device *dev)
 {
 	unsigned int timeout = 10;
@@ -1715,6 +1707,7 @@ int b53_fdb_add(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid)
 {
 	struct b53_device *priv = ds->priv;
+	int ret;
 
 	/* 5325 and 5365 require some more massaging, but could
 	 * be supported eventually
@@ -1722,7 +1715,11 @@ int b53_fdb_add(struct dsa_switch *ds, int port,
 	if (is5325(priv) || is5365(priv))
 		return -EOPNOTSUPP;
 
-	return b53_arl_op(priv, 0, port, addr, vid, true);
+	mutex_lock(&priv->arl_mutex);
+	ret = b53_arl_op(priv, 0, port, addr, vid, true);
+	mutex_unlock(&priv->arl_mutex);
+
+	return ret;
 }
 EXPORT_SYMBOL(b53_fdb_add);
 
@@ -1730,8 +1727,13 @@ int b53_fdb_del(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid)
 {
 	struct b53_device *priv = ds->priv;
+	int ret;
+
+	mutex_lock(&priv->arl_mutex);
+	ret = b53_arl_op(priv, 0, port, addr, vid, false);
+	mutex_unlock(&priv->arl_mutex);
 
-	return b53_arl_op(priv, 0, port, addr, vid, false);
+	return ret;
 }
 EXPORT_SYMBOL(b53_fdb_del);
 
@@ -1788,6 +1790,8 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 	int ret;
 	u8 reg;
 
+	mutex_lock(&priv->arl_mutex);
+
 	/* Start search operation */
 	reg = ARL_SRCH_STDN;
 	b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
@@ -1795,18 +1799,18 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 	do {
 		ret = b53_arl_search_wait(priv);
 		if (ret)
-			return ret;
+			break;
 
 		b53_arl_search_rd(priv, 0, &results[0]);
 		ret = b53_fdb_copy(port, &results[0], cb, data);
 		if (ret)
-			return ret;
+			break;
 
 		if (priv->num_arl_bins > 2) {
 			b53_arl_search_rd(priv, 1, &results[1]);
 			ret = b53_fdb_copy(port, &results[1], cb, data);
 			if (ret)
-				return ret;
+				break;
 
 			if (!results[0].is_valid && !results[1].is_valid)
 				break;
@@ -1814,6 +1818,8 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 
 	} while (count++ < b53_max_arl_entries(priv) / 2);
 
+	mutex_unlock(&priv->arl_mutex);
+
 	return 0;
 }
 EXPORT_SYMBOL(b53_fdb_dump);
@@ -1822,6 +1828,7 @@ int b53_mdb_add(struct dsa_switch *ds, int port,
 		const struct switchdev_obj_port_mdb *mdb)
 {
 	struct b53_device *priv = ds->priv;
+	int ret;
 
 	/* 5325 and 5365 require some more massaging, but could
 	 * be supported eventually
@@ -1829,7 +1836,11 @@ int b53_mdb_add(struct dsa_switch *ds, int port,
 	if (is5325(priv) || is5365(priv))
 		return -EOPNOTSUPP;
 
-	return b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
+	mutex_lock(&priv->arl_mutex);
+	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
+	mutex_unlock(&priv->arl_mutex);
+
+	return ret;
 }
 EXPORT_SYMBOL(b53_mdb_add);
 
@@ -1839,7 +1850,9 @@ int b53_mdb_del(struct dsa_switch *ds, int port,
 	struct b53_device *priv = ds->priv;
 	int ret;
 
+	mutex_lock(&priv->arl_mutex);
 	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
+	mutex_unlock(&priv->arl_mutex);
 	if (ret)
 		dev_err(ds->dev, "failed to delete MDB entry\n");
 
@@ -2302,33 +2315,30 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM5325_DEVICE_ID,
 		.dev_name = "BCM5325",
 		.vlans = 16,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x3f,
 		.arl_bins = 2,
 		.arl_buckets = 1024,
 		.imp_port = 5,
-		.cpu_port = B53_CPU_PORT_25,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
 	},
 	{
 		.chip_id = BCM5365_DEVICE_ID,
 		.dev_name = "BCM5365",
 		.vlans = 256,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x3f,
 		.arl_bins = 2,
 		.arl_buckets = 1024,
 		.imp_port = 5,
-		.cpu_port = B53_CPU_PORT_25,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
 	},
 	{
 		.chip_id = BCM5389_DEVICE_ID,
 		.dev_name = "BCM5389",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x11f,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2338,11 +2348,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM5395_DEVICE_ID,
 		.dev_name = "BCM5395",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x11f,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2352,11 +2361,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM5397_DEVICE_ID,
 		.dev_name = "BCM5397",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x11f,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_9798,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2366,11 +2374,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM5398_DEVICE_ID,
 		.dev_name = "BCM5398",
 		.vlans = 4096,
-		.enabled_ports = 0x7f,
+		.enabled_ports = 0x17f,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_9798,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2380,12 +2387,11 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM53115_DEVICE_ID,
 		.dev_name = "BCM53115",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x11f,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.vta_regs = B53_VTA_REGS,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
@@ -2394,11 +2400,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM53125_DEVICE_ID,
 		.dev_name = "BCM53125",
 		.vlans = 4096,
-		.enabled_ports = 0xff,
+		.enabled_ports = 0x1ff,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2412,7 +2417,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2426,7 +2430,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_63XX,
 		.duplex_reg = B53_DUPLEX_STAT_63XX,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
@@ -2436,11 +2439,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM53010_DEVICE_ID,
 		.dev_name = "BCM53010",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x1bf,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2454,7 +2456,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2468,7 +2469,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2478,11 +2478,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM53018_DEVICE_ID,
 		.dev_name = "BCM53018",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x1bf,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2492,11 +2491,10 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.chip_id = BCM53019_DEVICE_ID,
 		.dev_name = "BCM53019",
 		.vlans = 4096,
-		.enabled_ports = 0x1f,
+		.enabled_ports = 0x1bf,
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2510,7 +2508,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2524,7 +2521,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2539,7 +2535,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 256,
 		.imp_port = 8,
-		.cpu_port = 8, /* TODO: ports 4, 5, 8 */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2553,7 +2548,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 1024,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2567,7 +2561,6 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_bins = 4,
 		.arl_buckets = 256,
 		.imp_port = 8,
-		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
@@ -2593,7 +2586,6 @@ static int b53_switch_init(struct b53_device *dev)
 			dev->vta_regs[2] = chip->vta_regs[2];
 			dev->jumbo_pm_reg = chip->jumbo_pm_reg;
 			dev->imp_port = chip->imp_port;
-			dev->cpu_port = chip->cpu_port;
 			dev->num_vlans = chip->vlans;
 			dev->num_arl_bins = chip->arl_bins;
 			dev->num_arl_buckets = chip->arl_buckets;
@@ -2625,16 +2617,8 @@ static int b53_switch_init(struct b53_device *dev)
 			break;
 #endif
 		}
-	} else if (dev->chip_id == BCM53115_DEVICE_ID) {
-		u64 strap_value;
-
-		b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
-		/* use second IMP port if GMII is enabled */
-		if (strap_value & SV_GMII_CTRL_115)
-			dev->cpu_port = 5;
 	}
 
-	dev->enabled_ports |= BIT(dev->cpu_port);
 	dev->num_ports = fls(dev->enabled_ports);
 
 	dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
@@ -2705,6 +2689,7 @@ struct b53_device *b53_switch_alloc(struct device *base,
 
 	mutex_init(&dev->reg_mutex);
 	mutex_init(&dev->stats_mutex);
+	mutex_init(&dev->arl_mutex);
 
 	return dev;
 }