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(). ... --- net/ethtool/mm.c | 251 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 251 insertions(+) create mode 100644 net/ethtool/mm.c (limited to 'net/ethtool/mm.c') diff --git a/net/ethtool/mm.c b/net/ethtool/mm.c new file mode 100644 index 000000000..fce3cc273 --- /dev/null +++ b/net/ethtool/mm.c @@ -0,0 +1,251 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2022-2023 NXP + */ +#include "common.h" +#include "netlink.h" + +struct mm_req_info { + struct ethnl_req_info base; +}; + +struct mm_reply_data { + struct ethnl_reply_data base; + struct ethtool_mm_state state; + struct ethtool_mm_stats stats; +}; + +#define MM_REPDATA(__reply_base) \ + container_of(__reply_base, struct mm_reply_data, base) + +#define ETHTOOL_MM_STAT_CNT \ + (__ETHTOOL_A_MM_STAT_CNT - (ETHTOOL_A_MM_STAT_PAD + 1)) + +const struct nla_policy ethnl_mm_get_policy[ETHTOOL_A_MM_HEADER + 1] = { + [ETHTOOL_A_MM_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_stats), +}; + +static int mm_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct mm_reply_data *data = MM_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + const struct ethtool_ops *ops; + int ret; + + ops = dev->ethtool_ops; + + if (!ops->get_mm) + return -EOPNOTSUPP; + + ethtool_stats_init((u64 *)&data->stats, + sizeof(data->stats) / sizeof(u64)); + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + + ret = ops->get_mm(dev, &data->state); + if (ret) + goto out_complete; + + if (ops->get_mm_stats && (req_base->flags & ETHTOOL_FLAG_STATS)) + ops->get_mm_stats(dev, &data->stats); + +out_complete: + ethnl_ops_complete(dev); + + return ret; +} + +static int mm_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + int len = 0; + + len += nla_total_size(sizeof(u8)); /* _MM_PMAC_ENABLED */ + len += nla_total_size(sizeof(u8)); /* _MM_TX_ENABLED */ + len += nla_total_size(sizeof(u8)); /* _MM_TX_ACTIVE */ + len += nla_total_size(sizeof(u8)); /* _MM_VERIFY_ENABLED */ + len += nla_total_size(sizeof(u8)); /* _MM_VERIFY_STATUS */ + len += nla_total_size(sizeof(u32)); /* _MM_VERIFY_TIME */ + len += nla_total_size(sizeof(u32)); /* _MM_MAX_VERIFY_TIME */ + len += nla_total_size(sizeof(u32)); /* _MM_TX_MIN_FRAG_SIZE */ + len += nla_total_size(sizeof(u32)); /* _MM_RX_MIN_FRAG_SIZE */ + + if (req_base->flags & ETHTOOL_FLAG_STATS) + len += nla_total_size(0) + /* _MM_STATS */ + nla_total_size_64bit(sizeof(u64)) * ETHTOOL_MM_STAT_CNT; + + return len; +} + +static int mm_put_stat(struct sk_buff *skb, u64 val, u16 attrtype) +{ + if (val == ETHTOOL_STAT_NOT_SET) + return 0; + if (nla_put_u64_64bit(skb, attrtype, val, ETHTOOL_A_MM_STAT_PAD)) + return -EMSGSIZE; + return 0; +} + +static int mm_put_stats(struct sk_buff *skb, + const struct ethtool_mm_stats *stats) +{ + struct nlattr *nest; + + nest = nla_nest_start(skb, ETHTOOL_A_MM_STATS); + if (!nest) + return -EMSGSIZE; + + if (mm_put_stat(skb, stats->MACMergeFrameAssErrorCount, + ETHTOOL_A_MM_STAT_REASSEMBLY_ERRORS) || + mm_put_stat(skb, stats->MACMergeFrameSmdErrorCount, + ETHTOOL_A_MM_STAT_SMD_ERRORS) || + mm_put_stat(skb, stats->MACMergeFrameAssOkCount, + ETHTOOL_A_MM_STAT_REASSEMBLY_OK) || + mm_put_stat(skb, stats->MACMergeFragCountRx, + ETHTOOL_A_MM_STAT_RX_FRAG_COUNT) || + mm_put_stat(skb, stats->MACMergeFragCountTx, + ETHTOOL_A_MM_STAT_TX_FRAG_COUNT) || + mm_put_stat(skb, stats->MACMergeHoldCount, + ETHTOOL_A_MM_STAT_HOLD_COUNT)) + goto err_cancel; + + nla_nest_end(skb, nest); + return 0; + +err_cancel: + nla_nest_cancel(skb, nest); + return -EMSGSIZE; +} + +static int mm_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct mm_reply_data *data = MM_REPDATA(reply_base); + const struct ethtool_mm_state *state = &data->state; + + if (nla_put_u8(skb, ETHTOOL_A_MM_TX_ENABLED, state->tx_enabled) || + nla_put_u8(skb, ETHTOOL_A_MM_TX_ACTIVE, state->tx_active) || + nla_put_u8(skb, ETHTOOL_A_MM_PMAC_ENABLED, state->pmac_enabled) || + nla_put_u8(skb, ETHTOOL_A_MM_VERIFY_ENABLED, state->verify_enabled) || + nla_put_u8(skb, ETHTOOL_A_MM_VERIFY_STATUS, state->verify_status) || + nla_put_u32(skb, ETHTOOL_A_MM_VERIFY_TIME, state->verify_time) || + nla_put_u32(skb, ETHTOOL_A_MM_MAX_VERIFY_TIME, state->max_verify_time) || + nla_put_u32(skb, ETHTOOL_A_MM_TX_MIN_FRAG_SIZE, state->tx_min_frag_size) || + nla_put_u32(skb, ETHTOOL_A_MM_RX_MIN_FRAG_SIZE, state->rx_min_frag_size)) + return -EMSGSIZE; + + if (req_base->flags & ETHTOOL_FLAG_STATS && + mm_put_stats(skb, &data->stats)) + return -EMSGSIZE; + + return 0; +} + +const struct nla_policy ethnl_mm_set_policy[ETHTOOL_A_MM_MAX + 1] = { + [ETHTOOL_A_MM_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_MM_VERIFY_ENABLED] = NLA_POLICY_MAX(NLA_U8, 1), + [ETHTOOL_A_MM_VERIFY_TIME] = NLA_POLICY_RANGE(NLA_U32, 1, 128), + [ETHTOOL_A_MM_TX_ENABLED] = NLA_POLICY_MAX(NLA_U8, 1), + [ETHTOOL_A_MM_PMAC_ENABLED] = NLA_POLICY_MAX(NLA_U8, 1), + [ETHTOOL_A_MM_TX_MIN_FRAG_SIZE] = NLA_POLICY_RANGE(NLA_U32, 60, 252), +}; + +static void mm_state_to_cfg(const struct ethtool_mm_state *state, + struct ethtool_mm_cfg *cfg) +{ + /* We could also compare state->verify_status against + * ETHTOOL_MM_VERIFY_STATUS_DISABLED, but state->verify_enabled + * is more like an administrative state which should be seen in + * ETHTOOL_MSG_MM_GET replies. For example, a port with verification + * disabled might be in the ETHTOOL_MM_VERIFY_STATUS_INITIAL + * if it's down. + */ + cfg->verify_enabled = state->verify_enabled; + cfg->verify_time = state->verify_time; + cfg->tx_enabled = state->tx_enabled; + cfg->pmac_enabled = state->pmac_enabled; + cfg->tx_min_frag_size = state->tx_min_frag_size; +} + +static int +ethnl_set_mm_validate(struct ethnl_req_info *req_info, struct genl_info *info) +{ + const struct ethtool_ops *ops = req_info->dev->ethtool_ops; + + return ops->get_mm && ops->set_mm ? 1 : -EOPNOTSUPP; +} + +static int ethnl_set_mm(struct ethnl_req_info *req_info, struct genl_info *info) +{ + struct netlink_ext_ack *extack = info->extack; + struct net_device *dev = req_info->dev; + struct ethtool_mm_state state = {}; + struct nlattr **tb = info->attrs; + struct ethtool_mm_cfg cfg = {}; + bool mod = false; + int ret; + + ret = dev->ethtool_ops->get_mm(dev, &state); + if (ret) + return ret; + + mm_state_to_cfg(&state, &cfg); + + ethnl_update_bool(&cfg.verify_enabled, tb[ETHTOOL_A_MM_VERIFY_ENABLED], + &mod); + ethnl_update_u32(&cfg.verify_time, tb[ETHTOOL_A_MM_VERIFY_TIME], &mod); + ethnl_update_bool(&cfg.tx_enabled, tb[ETHTOOL_A_MM_TX_ENABLED], &mod); + ethnl_update_bool(&cfg.pmac_enabled, tb[ETHTOOL_A_MM_PMAC_ENABLED], + &mod); + ethnl_update_u32(&cfg.tx_min_frag_size, + tb[ETHTOOL_A_MM_TX_MIN_FRAG_SIZE], &mod); + + if (!mod) + return 0; + + if (cfg.verify_time > state.max_verify_time) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_MM_VERIFY_TIME], + "verifyTime exceeds device maximum"); + return -ERANGE; + } + + ret = dev->ethtool_ops->set_mm(dev, &cfg, extack); + return ret < 0 ? ret : 1; +} + +const struct ethnl_request_ops ethnl_mm_request_ops = { + .request_cmd = ETHTOOL_MSG_MM_GET, + .reply_cmd = ETHTOOL_MSG_MM_GET_REPLY, + .hdr_attr = ETHTOOL_A_MM_HEADER, + .req_info_size = sizeof(struct mm_req_info), + .reply_data_size = sizeof(struct mm_reply_data), + + .prepare_data = mm_prepare_data, + .reply_size = mm_reply_size, + .fill_reply = mm_fill_reply, + + .set_validate = ethnl_set_mm_validate, + .set = ethnl_set_mm, + .set_ntf_cmd = ETHTOOL_MSG_MM_NTF, +}; + +/* Returns whether a given device supports the MAC merge layer + * (has an eMAC and a pMAC). Must be called under rtnl_lock() and + * ethnl_ops_begin(). + */ +bool __ethtool_dev_mm_supported(struct net_device *dev) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + struct ethtool_mm_state state = {}; + int ret = -EOPNOTSUPP; + + if (ops && ops->get_mm) + ret = ops->get_mm(dev, &state); + + return !ret; +} -- cgit v1.2.3