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, 235 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_police.c b/drivers/net/ethernet/microchip/lan966x/lan966x_police.c
new file mode 100644
index 000000000000..a9aec900d608
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_police.c
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "lan966x_main.h"
+
+/* 0-8 : 9 port policers */
+#define POL_IDX_PORT	0
+
+/* Policer order: Serial (QoS -> Port -> VCAP) */
+#define POL_ORDER	0x1d3
+
+struct lan966x_tc_policer {
+	/* kilobit per second */
+	u32 rate;
+	/* bytes */
+	u32 burst;
+};
+
+static int lan966x_police_add(struct lan966x_port *port,
+			      struct lan966x_tc_policer *pol,
+			      u16 pol_idx)
+{
+	struct lan966x *lan966x = port->lan966x;
+
+	/* Rate unit is 33 1/3 kpps */
+	pol->rate = DIV_ROUND_UP(pol->rate * 3, 100);
+	/* Avoid zero burst size */
+	pol->burst = pol->burst ?: 1;
+	/* Unit is 4kB */
+	pol->burst = DIV_ROUND_UP(pol->burst, 4096);
+
+	if (pol->rate > GENMASK(15, 0) ||
+	    pol->burst > GENMASK(6, 0))
+		return -EINVAL;
+
+	lan_wr(ANA_POL_MODE_DROP_ON_YELLOW_ENA_SET(0) |
+	       ANA_POL_MODE_MARK_ALL_FRMS_RED_ENA_SET(0) |
+	       ANA_POL_MODE_IPG_SIZE_SET(20) |
+	       ANA_POL_MODE_FRM_MODE_SET(1) |
+	       ANA_POL_MODE_OVERSHOOT_ENA_SET(1),
+	       lan966x, ANA_POL_MODE(pol_idx));
+
+	lan_wr(ANA_POL_PIR_STATE_PIR_LVL_SET(0),
+	       lan966x, ANA_POL_PIR_STATE(pol_idx));
+
+	lan_wr(ANA_POL_PIR_CFG_PIR_RATE_SET(pol->rate) |
+	       ANA_POL_PIR_CFG_PIR_BURST_SET(pol->burst),
+	       lan966x, ANA_POL_PIR_CFG(pol_idx));
+
+	return 0;
+}
+
+static int lan966x_police_del(struct lan966x_port *port,
+			      u16 pol_idx)
+{
+	struct lan966x *lan966x = port->lan966x;
+
+	lan_wr(ANA_POL_MODE_DROP_ON_YELLOW_ENA_SET(0) |
+	       ANA_POL_MODE_MARK_ALL_FRMS_RED_ENA_SET(0) |
+	       ANA_POL_MODE_IPG_SIZE_SET(20) |
+	       ANA_POL_MODE_FRM_MODE_SET(2) |
+	       ANA_POL_MODE_OVERSHOOT_ENA_SET(1),
+	       lan966x, ANA_POL_MODE(pol_idx));
+
+	lan_wr(ANA_POL_PIR_STATE_PIR_LVL_SET(0),
+	       lan966x, ANA_POL_PIR_STATE(pol_idx));
+
+	lan_wr(ANA_POL_PIR_CFG_PIR_RATE_SET(GENMASK(14, 0)) |
+	       ANA_POL_PIR_CFG_PIR_BURST_SET(0),
+	       lan966x, ANA_POL_PIR_CFG(pol_idx));
+
+	return 0;
+}
+
+static int lan966x_police_validate(struct lan966x_port *port,
+				   const struct flow_action *action,
+				   const struct flow_action_entry *act,
+				   unsigned long police_id,
+				   bool ingress,
+				   struct netlink_ext_ack *extack)
+{
+	if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Offload not supported when exceed action is not drop");
+		return -EOPNOTSUPP;
+	}
+
+	if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
+	    act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Offload not supported when conform action is not pipe or ok");
+		return -EOPNOTSUPP;
+	}
+
+	if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
+	    !flow_action_is_last_entry(action, act)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Offload not supported when conform action is ok, but action is not last");
+		return -EOPNOTSUPP;
+	}
+
+	if (act->police.peakrate_bytes_ps ||
+	    act->police.avrate || act->police.overhead) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Offload not supported when peakrate/avrate/overhead is configured");
+		return -EOPNOTSUPP;
+	}
+
+	if (act->police.rate_pkt_ps) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "QoS offload not support packets per second");
+		return -EOPNOTSUPP;
+	}
+
+	if (!ingress) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Policer is not supported on egress");
+		return -EOPNOTSUPP;
+	}
+
+	if (port->tc.ingress_shared_block) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Policer is not supported on shared ingress blocks");
+		return -EOPNOTSUPP;
+	}
+
+	if (port->tc.police_id && port->tc.police_id != police_id) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Only one policer per port is supported");
+		return -EEXIST;
+	}
+
+	return 0;
+}
+
+int lan966x_police_port_add(struct lan966x_port *port,
+			    struct flow_action *action,
+			    struct flow_action_entry *act,
+			    unsigned long police_id,
+			    bool ingress,
+			    struct netlink_ext_ack *extack)
+{
+	struct lan966x *lan966x = port->lan966x;
+	struct rtnl_link_stats64 new_stats;
+	struct lan966x_tc_policer pol;
+	struct flow_stats *old_stats;
+	int err;
+
+	err = lan966x_police_validate(port, action, act, police_id, ingress,
+				      extack);
+	if (err)
+		return err;
+
+	memset(&pol, 0, sizeof(pol));
+
+	pol.rate = div_u64(act->police.rate_bytes_ps, 1000) * 8;
+	pol.burst = act->police.burst;
+
+	err = lan966x_police_add(port, &pol, POL_IDX_PORT + port->chip_port);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Failed to add policer to port");
+		return err;
+	}
+
+	lan_rmw(ANA_POL_CFG_PORT_POL_ENA_SET(1) |
+		ANA_POL_CFG_POL_ORDER_SET(POL_ORDER),
+		ANA_POL_CFG_PORT_POL_ENA |
+		ANA_POL_CFG_POL_ORDER,
+		lan966x, ANA_POL_CFG(port->chip_port));
+
+	port->tc.police_id = police_id;
+
+	/* Setup initial stats */
+	old_stats = &port->tc.police_stat;
+	lan966x_stats_get(port->dev, &new_stats);
+	old_stats->bytes = new_stats.rx_bytes;
+	old_stats->pkts = new_stats.rx_packets;
+	old_stats->drops = new_stats.rx_dropped;
+	old_stats->lastused = jiffies;
+
+	return 0;
+}
+
+int lan966x_police_port_del(struct lan966x_port *port,
+			    unsigned long police_id,
+			    struct netlink_ext_ack *extack)
+{
+	struct lan966x *lan966x = port->lan966x;
+	int err;
+
+	if (port->tc.police_id != police_id) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Invalid policer id");
+		return -EINVAL;
+	}
+
+	err = lan966x_police_del(port, port->tc.police_id);
+	if (err) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Failed to add policer to port");
+		return err;
+	}
+
+	lan_rmw(ANA_POL_CFG_PORT_POL_ENA_SET(0) |
+		ANA_POL_CFG_POL_ORDER_SET(POL_ORDER),
+		ANA_POL_CFG_PORT_POL_ENA |
+		ANA_POL_CFG_POL_ORDER,
+		lan966x, ANA_POL_CFG(port->chip_port));
+
+	port->tc.police_id = 0;
+
+	return 0;
+}
+
+void lan966x_police_port_stats(struct lan966x_port *port,
+			       struct flow_stats *stats)
+{
+	struct rtnl_link_stats64 new_stats;
+	struct flow_stats *old_stats;
+
+	old_stats = &port->tc.police_stat;
+	lan966x_stats_get(port->dev, &new_stats);
+
+	flow_stats_update(stats,
+			  new_stats.rx_bytes - old_stats->bytes,
+			  new_stats.rx_packets - old_stats->pkts,
+			  new_stats.rx_dropped - old_stats->drops,
+			  old_stats->lastused,
+			  FLOW_ACTION_HW_STATS_IMMEDIATE);
+
+	old_stats->bytes = new_stats.rx_bytes;
+	old_stats->pkts = new_stats.rx_packets;
+	old_stats->drops = new_stats.rx_dropped;
+	old_stats->lastused = jiffies;
+}