From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c | 407 +++++++++++++++++++++ 1 file changed, 407 insertions(+) create mode 100644 drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c (limited to 'drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c') diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c new file mode 100644 index 000000000..871a3e62f --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c @@ -0,0 +1,407 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries. + */ + +#include + +#include "sparx5_port.h" + +enum sparx5_dcb_apptrust_values { + SPARX5_DCB_APPTRUST_EMPTY, + SPARX5_DCB_APPTRUST_DSCP, + SPARX5_DCB_APPTRUST_PCP, + SPARX5_DCB_APPTRUST_DSCP_PCP, + __SPARX5_DCB_APPTRUST_MAX +}; + +static const struct sparx5_dcb_apptrust { + u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1]; + int nselectors; +} *sparx5_port_apptrust[SPX5_PORTS]; + +static const char *sparx5_dcb_apptrust_names[__SPARX5_DCB_APPTRUST_MAX] = { + [SPARX5_DCB_APPTRUST_EMPTY] = "empty", + [SPARX5_DCB_APPTRUST_DSCP] = "dscp", + [SPARX5_DCB_APPTRUST_PCP] = "pcp", + [SPARX5_DCB_APPTRUST_DSCP_PCP] = "dscp pcp" +}; + +/* Sparx5 supported apptrust policies */ +static const struct sparx5_dcb_apptrust + sparx5_dcb_apptrust_policies[__SPARX5_DCB_APPTRUST_MAX] = { + /* Empty *must* be first */ + [SPARX5_DCB_APPTRUST_EMPTY] = { { 0 }, 0 }, + [SPARX5_DCB_APPTRUST_DSCP] = { { IEEE_8021QAZ_APP_SEL_DSCP }, 1 }, + [SPARX5_DCB_APPTRUST_PCP] = { { DCB_APP_SEL_PCP }, 1 }, + [SPARX5_DCB_APPTRUST_DSCP_PCP] = { { IEEE_8021QAZ_APP_SEL_DSCP, + DCB_APP_SEL_PCP }, 2 }, +}; + +/* Validate app entry. + * + * Check for valid selectors and valid protocol and priority ranges. + */ +static int sparx5_dcb_app_validate(struct net_device *dev, + const struct dcb_app *app) +{ + int err = 0; + + switch (app->selector) { + /* Default priority checks */ + case IEEE_8021QAZ_APP_SEL_ETHERTYPE: + if (app->protocol != 0) + err = -EINVAL; + else if (app->priority >= SPX5_PRIOS) + err = -ERANGE; + break; + /* Dscp checks */ + case IEEE_8021QAZ_APP_SEL_DSCP: + if (app->protocol >= SPARX5_PORT_QOS_DSCP_COUNT) + err = -EINVAL; + else if (app->priority >= SPX5_PRIOS) + err = -ERANGE; + break; + /* Pcp checks */ + case DCB_APP_SEL_PCP: + if (app->protocol >= SPARX5_PORT_QOS_PCP_DEI_COUNT) + err = -EINVAL; + else if (app->priority >= SPX5_PRIOS) + err = -ERANGE; + break; + default: + err = -EINVAL; + break; + } + + if (err) + netdev_err(dev, "Invalid entry: %d:%d\n", app->protocol, + app->priority); + + return err; +} + +/* Validate apptrust configuration. + * + * Return index of supported apptrust configuration if valid, otherwise return + * error. + */ +static int sparx5_dcb_apptrust_validate(struct net_device *dev, u8 *selectors, + int nselectors, int *err) +{ + bool match = false; + int i, ii; + + for (i = 0; i < ARRAY_SIZE(sparx5_dcb_apptrust_policies); i++) { + if (sparx5_dcb_apptrust_policies[i].nselectors != nselectors) + continue; + match = true; + for (ii = 0; ii < nselectors; ii++) { + if (sparx5_dcb_apptrust_policies[i].selectors[ii] != + *(selectors + ii)) { + match = false; + break; + } + } + if (match) + break; + } + + /* Requested trust configuration is not supported */ + if (!match) { + netdev_err(dev, "Valid apptrust configurations are:\n"); + for (i = 0; i < ARRAY_SIZE(sparx5_dcb_apptrust_names); i++) + pr_info("order: %s\n", sparx5_dcb_apptrust_names[i]); + *err = -EOPNOTSUPP; + } + + return i; +} + +static bool sparx5_dcb_apptrust_contains(int portno, u8 selector) +{ + const struct sparx5_dcb_apptrust *conf = sparx5_port_apptrust[portno]; + int i; + + for (i = 0; i < conf->nselectors; i++) + if (conf->selectors[i] == selector) + return true; + + return false; +} + +static int sparx5_dcb_app_update(struct net_device *dev) +{ + struct dcb_ieee_app_prio_map dscp_rewr_map = {0}; + struct dcb_rewr_prio_pcp_map pcp_rewr_map = {0}; + struct sparx5_port *port = netdev_priv(dev); + struct sparx5_port_qos_dscp_map *dscp_map; + struct sparx5_port_qos_pcp_map *pcp_map; + struct sparx5_port_qos qos = {0}; + struct dcb_app app_itr = {0}; + int portno = port->portno; + bool dscp_rewr = false; + bool pcp_rewr = false; + u16 dscp; + int i; + + dscp_map = &qos.dscp.map; + pcp_map = &qos.pcp.map; + + /* Get default prio. */ + qos.default_prio = dcb_ieee_getapp_default_prio_mask(dev); + if (qos.default_prio) + qos.default_prio = fls(qos.default_prio) - 1; + + /* Get dscp ingress mapping */ + for (i = 0; i < ARRAY_SIZE(dscp_map->map); i++) { + app_itr.selector = IEEE_8021QAZ_APP_SEL_DSCP; + app_itr.protocol = i; + dscp_map->map[i] = dcb_getapp(dev, &app_itr); + } + + /* Get pcp ingress mapping */ + for (i = 0; i < ARRAY_SIZE(pcp_map->map); i++) { + app_itr.selector = DCB_APP_SEL_PCP; + app_itr.protocol = i; + pcp_map->map[i] = dcb_getapp(dev, &app_itr); + } + + /* Get pcp rewrite mapping */ + dcb_getrewr_prio_pcp_mask_map(dev, &pcp_rewr_map); + for (i = 0; i < ARRAY_SIZE(pcp_rewr_map.map); i++) { + if (!pcp_rewr_map.map[i]) + continue; + pcp_rewr = true; + qos.pcp_rewr.map.map[i] = fls(pcp_rewr_map.map[i]) - 1; + } + + /* Get dscp rewrite mapping */ + dcb_getrewr_prio_dscp_mask_map(dev, &dscp_rewr_map); + for (i = 0; i < ARRAY_SIZE(dscp_rewr_map.map); i++) { + if (!dscp_rewr_map.map[i]) + continue; + + /* The rewrite table of the switch has 32 entries; one for each + * priority for each DP level. Currently, the rewrite map does + * not indicate DP level, so we map classified QoS class to + * classified DSCP, for each classified DP level. Rewrite of + * DSCP is only enabled, if we have active mappings. + */ + dscp_rewr = true; + dscp = fls64(dscp_rewr_map.map[i]) - 1; + qos.dscp_rewr.map.map[i] = dscp; /* DP 0 */ + qos.dscp_rewr.map.map[i + 8] = dscp; /* DP 1 */ + qos.dscp_rewr.map.map[i + 16] = dscp; /* DP 2 */ + qos.dscp_rewr.map.map[i + 24] = dscp; /* DP 3 */ + } + + /* Enable use of pcp for queue classification ? */ + if (sparx5_dcb_apptrust_contains(portno, DCB_APP_SEL_PCP)) { + qos.pcp.qos_enable = true; + qos.pcp.dp_enable = qos.pcp.qos_enable; + /* Enable rewrite of PCP and DEI if PCP is trusted *and* rewrite + * table is not empty. + */ + if (pcp_rewr) + qos.pcp_rewr.enable = true; + } + + /* Enable use of dscp for queue classification ? */ + if (sparx5_dcb_apptrust_contains(portno, IEEE_8021QAZ_APP_SEL_DSCP)) { + qos.dscp.qos_enable = true; + qos.dscp.dp_enable = qos.dscp.qos_enable; + if (dscp_rewr) + /* Do not enable rewrite if no mappings are active, as + * classified DSCP will then be zero for all classified + * QoS class and DP combinations. + */ + qos.dscp_rewr.enable = true; + } + + return sparx5_port_qos_set(port, &qos); +} + +/* Set or delete DSCP app entry. + * + * DSCP mapping is global for all ports, so set and delete app entries are + * replicated for each port. + */ +static int sparx5_dcb_ieee_dscp_setdel(struct net_device *dev, + struct dcb_app *app, + int (*setdel)(struct net_device *, + struct dcb_app *)) +{ + struct sparx5_port *port = netdev_priv(dev); + struct sparx5_port *port_itr; + int err, i; + + for (i = 0; i < SPX5_PORTS; i++) { + port_itr = port->sparx5->ports[i]; + if (!port_itr) + continue; + err = setdel(port_itr->ndev, app); + if (err) + return err; + } + + return 0; +} + +static int sparx5_dcb_ieee_setapp(struct net_device *dev, struct dcb_app *app) +{ + struct dcb_app app_itr; + int err = 0; + u8 prio; + + err = sparx5_dcb_app_validate(dev, app); + if (err) + goto out; + + /* Delete current mapping, if it exists */ + prio = dcb_getapp(dev, app); + if (prio) { + app_itr = *app; + app_itr.priority = prio; + dcb_ieee_delapp(dev, &app_itr); + } + + if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP) + err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_setapp); + else + err = dcb_ieee_setapp(dev, app); + + if (err) + goto out; + + sparx5_dcb_app_update(dev); + +out: + return err; +} + +static int sparx5_dcb_ieee_delapp(struct net_device *dev, struct dcb_app *app) +{ + int err; + + if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP) + err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_ieee_delapp); + else + err = dcb_ieee_delapp(dev, app); + + if (err < 0) + return err; + + return sparx5_dcb_app_update(dev); +} + +static int sparx5_dcb_setapptrust(struct net_device *dev, u8 *selectors, + int nselectors) +{ + struct sparx5_port *port = netdev_priv(dev); + int err = 0, idx; + + idx = sparx5_dcb_apptrust_validate(dev, selectors, nselectors, &err); + if (err < 0) + return err; + + sparx5_port_apptrust[port->portno] = &sparx5_dcb_apptrust_policies[idx]; + + return sparx5_dcb_app_update(dev); +} + +static int sparx5_dcb_getapptrust(struct net_device *dev, u8 *selectors, + int *nselectors) +{ + struct sparx5_port *port = netdev_priv(dev); + const struct sparx5_dcb_apptrust *trust; + + trust = sparx5_port_apptrust[port->portno]; + + memcpy(selectors, trust->selectors, trust->nselectors); + *nselectors = trust->nselectors; + + return 0; +} + +static int sparx5_dcb_delrewr(struct net_device *dev, struct dcb_app *app) +{ + int err; + + if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP) + err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_delrewr); + else + err = dcb_delrewr(dev, app); + + if (err < 0) + return err; + + return sparx5_dcb_app_update(dev); +} + +static int sparx5_dcb_setrewr(struct net_device *dev, struct dcb_app *app) +{ + struct dcb_app app_itr; + int err = 0; + u16 proto; + + err = sparx5_dcb_app_validate(dev, app); + if (err) + goto out; + + /* Delete current mapping, if it exists. */ + proto = dcb_getrewr(dev, app); + if (proto) { + app_itr = *app; + app_itr.protocol = proto; + sparx5_dcb_delrewr(dev, &app_itr); + } + + if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP) + err = sparx5_dcb_ieee_dscp_setdel(dev, app, dcb_setrewr); + else + err = dcb_setrewr(dev, app); + + if (err) + goto out; + + sparx5_dcb_app_update(dev); + +out: + return err; +} + +const struct dcbnl_rtnl_ops sparx5_dcbnl_ops = { + .ieee_setapp = sparx5_dcb_ieee_setapp, + .ieee_delapp = sparx5_dcb_ieee_delapp, + .dcbnl_setapptrust = sparx5_dcb_setapptrust, + .dcbnl_getapptrust = sparx5_dcb_getapptrust, + .dcbnl_setrewr = sparx5_dcb_setrewr, + .dcbnl_delrewr = sparx5_dcb_delrewr, +}; + +int sparx5_dcb_init(struct sparx5 *sparx5) +{ + struct sparx5_port *port; + int i; + + for (i = 0; i < SPX5_PORTS; i++) { + port = sparx5->ports[i]; + if (!port) + continue; + port->ndev->dcbnl_ops = &sparx5_dcbnl_ops; + /* Initialize [dscp, pcp] default trust */ + sparx5_port_apptrust[port->portno] = + &sparx5_dcb_apptrust_policies + [SPARX5_DCB_APPTRUST_DSCP_PCP]; + + /* Enable DSCP classification based on classified QoS class and + * DP, for all DSCP values, for all ports. + */ + sparx5_port_qos_dscp_rewr_mode_set(port, + SPARX5_PORT_REW_DSCP_ALL); + } + + return 0; +} -- cgit v1.2.3