Merge tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Introduce and use a single page frag cache for allocating small skb
     heads, clawing back the 10-20% performance regression in UDP flood
     test from previous fixes.

   - Run packets which already went thru HW coalescing thru SW GRO. This
     significantly improves TCP segment coalescing and simplifies
     deployments as different workloads benefit from HW or SW GRO.

   - Shrink the size of the base zero-copy send structure.

   - Move TCP init under a new slow / sleepable version of DO_ONCE().

  BPF:

   - Add BPF-specific, any-context-safe memory allocator.

   - Add helpers/kfuncs for PKCS#7 signature verification from BPF
     programs.

   - Define a new map type and related helpers for user space -> kernel
     communication over a ring buffer (BPF_MAP_TYPE_USER_RINGBUF).

   - Allow targeting BPF iterators to loop through resources of one
     task/thread.

   - Add ability to call selected destructive functions. Expose
     crash_kexec() to allow BPF to trigger a kernel dump. Use
     CAP_SYS_BOOT check on the loading process to judge permissions.

   - Enable BPF to collect custom hierarchical cgroup stats efficiently
     by integrating with the rstat framework.

   - Support struct arguments for trampoline based programs. Only
     structs with size <= 16B and x86 are supported.

   - Invoke cgroup/connect{4,6} programs for unprivileged ICMP ping
     sockets (instead of just TCP and UDP sockets).

   - Add a helper for accessing CLOCK_TAI for time sensitive network
     related programs.

   - Support accessing network tunnel metadata's flags.

   - Make TCP SYN ACK RTO tunable by BPF programs with TCP Fast Open.

   - Add support for writing to Netfilter's nf_conn:mark.

  Protocols:

   - WiFi: more Extremely High Throughput (EHT) and Multi-Link Operation
     (MLO) work (802.11be, WiFi 7).

   - vsock: improve support for SO_RCVLOWAT.

   - SMC: support SO_REUSEPORT.

   - Netlink: define and document how to use netlink in a "modern" way.
     Support reporting missing attributes via extended ACK.

   - IPSec: support collect metadata mode for xfrm interfaces.

   - TCPv6: send consistent autoflowlabel in SYN_RECV state and RST
     packets.

   - TCP: introduce optional per-netns connection hash table to allow
     better isolation between namespaces (opt-in, at the cost of memory
     and cache pressure).

   - MPTCP: support TCP_FASTOPEN_CONNECT.

   - Add NEXT-C-SID support in Segment Routing (SRv6) End behavior.

   - Adjust IP_UNICAST_IF sockopt behavior for connected UDP sockets.

   - Open vSwitch:
      - Allow specifying ifindex of new interfaces.
      - Allow conntrack and metering in non-initial user namespace.

   - TLS: support the Korean ARIA-GCM crypto algorithm.

   - Remove DECnet support.

  Driver API:

   - Allow selecting the conduit interface used by each port in DSA
     switches, at runtime.

   - Ethernet Power Sourcing Equipment and Power Device support.

   - Add tc-taprio support for queueMaxSDU parameter, i.e. setting per
     traffic class max frame size for time-based packet schedules.

   - Support PHY rate matching - adapting between differing host-side
     and link-side speeds.

   - Introduce QUSGMII PHY mode and 1000BASE-KX interface mode.

   - Validate OF (device tree) nodes for DSA shared ports; make
     phylink-related properties mandatory on DSA and CPU ports.
     Enforcing more uniformity should allow transitioning to phylink.

   - Require that flash component name used during update matches one of
     the components for which version is reported by info_get().

   - Remove "weight" argument from driver-facing NAPI API as much as
     possible. It's one of those magic knobs which seemed like a good
     idea at the time but is too indirect to use in practice.

   - Support offload of TLS connections with 256 bit keys.

  New hardware / drivers:

   - Ethernet:
      - Microchip KSZ9896 6-port Gigabit Ethernet Switch
      - Renesas Ethernet AVB (EtherAVB-IF) Gen4 SoCs
      - Analog Devices ADIN1110 and ADIN2111 industrial single pair
        Ethernet (10BASE-T1L) MAC+PHY.
      - Rockchip RV1126 Gigabit Ethernet (a version of stmmac IP).

   - Ethernet SFPs / modules:
      - RollBall / Hilink / Turris 10G copper SFPs
      - HALNy GPON module

   - WiFi:
      - CYW43439 SDIO chipset (brcmfmac)
      - CYW89459 PCIe chipset (brcmfmac)
      - BCM4378 on Apple platforms (brcmfmac)

  Drivers:

   - CAN:
      - gs_usb: HW timestamp support

   - Ethernet PHYs:
      - lan8814: cable diagnostics

   - Ethernet NICs:
      - Intel (100G):
         - implement control of FCS/CRC stripping
         - port splitting via devlink
         - L2TPv3 filtering offload
      - nVidia/Mellanox:
         - tunnel offload for sub-functions
         - MACSec offload, w/ Extended packet number and replay window
           offload
         - significantly restructure, and optimize the AF_XDP support,
           align the behavior with other vendors
      - Huawei:
         - configuring DSCP map for traffic class selection
         - querying standard FEC statistics
         - querying SerDes lane number via ethtool
      - Marvell/Cavium:
         - egress priority flow control
         - MACSec offload
      - AMD/SolarFlare:
         - PTP over IPv6 and raw Ethernet
      - small / embedded:
         - ax88772: convert to phylink (to support SFP cages)
         - altera: tse: convert to phylink
         - ftgmac100: support fixed link
         - enetc: standard Ethtool counters
         - macb: ZynqMP SGMII dynamic configuration support
         - tsnep: support multi-queue and use page pool
         - lan743x: Rx IP & TCP checksum offload
         - igc: add xdp frags support to ndo_xdp_xmit

   - Ethernet high-speed switches:
      - Marvell (prestera):
         - support SPAN port features (traffic mirroring)
         - nexthop object offloading
      - Microchip (sparx5):
         - multicast forwarding offload
         - QoS queuing offload (tc-mqprio, tc-tbf, tc-ets)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - support RGMII cmode
      - NXP (felix):
         - standardized ethtool counters
      - Microchip (lan966x):
         - QoS queuing offload (tc-mqprio, tc-tbf, tc-cbs, tc-ets)
         - traffic policing and mirroring
         - link aggregation / bonding offload
         - QUSGMII PHY mode support

   - Qualcomm 802.11ax WiFi (ath11k):
      - cold boot calibration support on WCN6750
      - support to connect to a non-transmit MBSSID AP profile
      - enable remain-on-channel support on WCN6750
      - Wake-on-WLAN support for WCN6750
      - support to provide transmit power from firmware via nl80211
      - support to get power save duration for each client
      - spectral scan support for 160 MHz

   - MediaTek WiFi (mt76):
      - WiFi-to-Ethernet bridging offload for MT7986 chips

   - RealTek WiFi (rtw89):
      - P2P support"

* tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1864 commits)
  eth: pse: add missing static inlines
  once: rename _SLOW to _SLEEPABLE
  net: pse-pd: add regulator based PSE driver
  dt-bindings: net: pse-dt: add bindings for regulator based PoDL PSE controller
  ethtool: add interface to interact with Ethernet Power Equipment
  net: mdiobus: search for PSE nodes by parsing PHY nodes.
  net: mdiobus: fwnode_mdiobus_register_phy() rework error handling
  net: add framework to support Ethernet PSE and PDs devices
  dt-bindings: net: phy: add PoDL PSE property
  net: marvell: prestera: Propagate nh state from hw to kernel
  net: marvell: prestera: Add neighbour cache accounting
  net: marvell: prestera: add stub handler neighbour events
  net: marvell: prestera: Add heplers to interact with fib_notifier_info
  net: marvell: prestera: Add length macros for prestera_ip_addr
  net: marvell: prestera: add delayed wq and flush wq on deinit
  net: marvell: prestera: Add strict cleanup of fib arbiter
  net: marvell: prestera: Add cleanup of allocated fib_nodes
  net: marvell: prestera: Add router nexthops ABI
  eth: octeon: fix build after netif_napi_add() changes
  net/mlx5: E-Switch, Return EBUSY if can't get mode lock
  ...

1 files changed, 96 insertions, 1 deletions

diff --git a/drivers/net/ipa/ipa_reg.c b/drivers/net/ipa/ipa_reg.c
index e6147a1cd787..22f067741d9b 100644
--- a/drivers/net/ipa/ipa_reg.c
+++ b/drivers/net/ipa/ipa_reg.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
- * Copyright (C) 2019-2020 Linaro Ltd.
+ * Copyright (C) 2019-2022 Linaro Ltd.
  */
 
 #include <linux/io.h>
@@ -9,11 +9,105 @@
 #include "ipa.h"
 #include "ipa_reg.h"
 
+/* Is this register valid and defined for the current IPA version? */
+static bool ipa_reg_valid(struct ipa *ipa, enum ipa_reg_id reg_id)
+{
+	enum ipa_version version = ipa->version;
+	bool valid;
+
+	/* Check for bogus (out of range) register IDs */
+	if ((u32)reg_id >= ipa->regs->reg_count)
+		return false;
+
+	switch (reg_id) {
+	case IPA_BCR:
+	case COUNTER_CFG:
+		valid = version < IPA_VERSION_4_5;
+		break;
+
+	case IPA_TX_CFG:
+	case FLAVOR_0:
+	case IDLE_INDICATION_CFG:
+		valid = version >= IPA_VERSION_3_5;
+		break;
+
+	case QTIME_TIMESTAMP_CFG:
+	case TIMERS_XO_CLK_DIV_CFG:
+	case TIMERS_PULSE_GRAN_CFG:
+		valid = version >= IPA_VERSION_4_5;
+		break;
+
+	case SRC_RSRC_GRP_45_RSRC_TYPE:
+	case DST_RSRC_GRP_45_RSRC_TYPE:
+		valid = version <= IPA_VERSION_3_1 ||
+			version == IPA_VERSION_4_5;
+		break;
+
+	case SRC_RSRC_GRP_67_RSRC_TYPE:
+	case DST_RSRC_GRP_67_RSRC_TYPE:
+		valid = version <= IPA_VERSION_3_1;
+		break;
+
+	case ENDP_FILTER_ROUTER_HSH_CFG:
+		valid = version != IPA_VERSION_4_2;
+		break;
+
+	case IRQ_SUSPEND_EN:
+	case IRQ_SUSPEND_CLR:
+		valid = version >= IPA_VERSION_3_1;
+		break;
+
+	default:
+		valid = true;	/* Others should be defined for all versions */
+		break;
+	}
+
+	/* To be valid, it must be defined */
+
+	return valid && ipa->regs->reg[reg_id];
+}
+
+const struct ipa_reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id)
+{
+	if (WARN_ON(!ipa_reg_valid(ipa, reg_id)))
+		return NULL;
+
+	return ipa->regs->reg[reg_id];
+}
+
+static const struct ipa_regs *ipa_regs(enum ipa_version version)
+{
+	switch (version) {
+	case IPA_VERSION_3_1:
+		return &ipa_regs_v3_1;
+	case IPA_VERSION_3_5_1:
+		return &ipa_regs_v3_5_1;
+	case IPA_VERSION_4_2:
+		return &ipa_regs_v4_2;
+	case IPA_VERSION_4_5:
+		return &ipa_regs_v4_5;
+	case IPA_VERSION_4_9:
+		return &ipa_regs_v4_9;
+	case IPA_VERSION_4_11:
+		return &ipa_regs_v4_11;
+	default:
+		return NULL;
+	}
+}
+
 int ipa_reg_init(struct ipa *ipa)
 {
 	struct device *dev = &ipa->pdev->dev;
+	const struct ipa_regs *regs;
 	struct resource *res;
 
+	regs = ipa_regs(ipa->version);
+	if (!regs)
+		return -EINVAL;
+
+	if (WARN_ON(regs->reg_count > IPA_REG_ID_COUNT))
+		return -EINVAL;
+
 	/* Setup IPA register memory  */
 	res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
 					   "ipa-reg");
@@ -28,6 +122,7 @@ int ipa_reg_init(struct ipa *ipa)
 		return -ENOMEM;
 	}
 	ipa->reg_addr = res->start;
+	ipa->regs = regs;
 
 	return 0;
 }