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/infiniband/hw/qib/qib_eeprom.c | 271 +++++++++++++++++++++++++++++++++ 1 file changed, 271 insertions(+) create mode 100644 drivers/infiniband/hw/qib/qib_eeprom.c (limited to 'drivers/infiniband/hw/qib/qib_eeprom.c') diff --git a/drivers/infiniband/hw/qib/qib_eeprom.c b/drivers/infiniband/hw/qib/qib_eeprom.c new file mode 100644 index 000000000..bf660c001 --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_eeprom.c @@ -0,0 +1,271 @@ +/* + * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. + * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include + +#include "qib.h" + +/* + * Functions specific to the serial EEPROM on cards handled by ib_qib. + * The actual serail interface code is in qib_twsi.c. This file is a client + */ + +/** + * qib_eeprom_read - receives bytes from the eeprom via I2C + * @dd: the qlogic_ib device + * @eeprom_offset: address to read from + * @buff: where to store result + * @len: number of bytes to receive + */ +int qib_eeprom_read(struct qib_devdata *dd, u8 eeprom_offset, + void *buff, int len) +{ + int ret; + + ret = mutex_lock_interruptible(&dd->eep_lock); + if (!ret) { + ret = qib_twsi_reset(dd); + if (ret) + qib_dev_err(dd, "EEPROM Reset for read failed\n"); + else + ret = qib_twsi_blk_rd(dd, dd->twsi_eeprom_dev, + eeprom_offset, buff, len); + mutex_unlock(&dd->eep_lock); + } + + return ret; +} + +/* + * Actually update the eeprom, first doing write enable if + * needed, then restoring write enable state. + * Must be called with eep_lock held + */ +static int eeprom_write_with_enable(struct qib_devdata *dd, u8 offset, + const void *buf, int len) +{ + int ret, pwen; + + pwen = dd->f_eeprom_wen(dd, 1); + ret = qib_twsi_reset(dd); + if (ret) + qib_dev_err(dd, "EEPROM Reset for write failed\n"); + else + ret = qib_twsi_blk_wr(dd, dd->twsi_eeprom_dev, + offset, buf, len); + dd->f_eeprom_wen(dd, pwen); + return ret; +} + +/** + * qib_eeprom_write - writes data to the eeprom via I2C + * @dd: the qlogic_ib device + * @eeprom_offset: where to place data + * @buff: data to write + * @len: number of bytes to write + */ +int qib_eeprom_write(struct qib_devdata *dd, u8 eeprom_offset, + const void *buff, int len) +{ + int ret; + + ret = mutex_lock_interruptible(&dd->eep_lock); + if (!ret) { + ret = eeprom_write_with_enable(dd, eeprom_offset, buff, len); + mutex_unlock(&dd->eep_lock); + } + + return ret; +} + +static u8 flash_csum(struct qib_flash *ifp, int adjust) +{ + u8 *ip = (u8 *) ifp; + u8 csum = 0, len; + + /* + * Limit length checksummed to max length of actual data. + * Checksum of erased eeprom will still be bad, but we avoid + * reading past the end of the buffer we were passed. + */ + len = ifp->if_length; + if (len > sizeof(struct qib_flash)) + len = sizeof(struct qib_flash); + while (len--) + csum += *ip++; + csum -= ifp->if_csum; + csum = ~csum; + if (adjust) + ifp->if_csum = csum; + + return csum; +} + +/** + * qib_get_eeprom_info- get the GUID et al. from the TSWI EEPROM device + * @dd: the qlogic_ib device + * + * We have the capability to use the nguid field, and get + * the guid from the first chip's flash, to use for all of them. + */ +void qib_get_eeprom_info(struct qib_devdata *dd) +{ + void *buf; + struct qib_flash *ifp; + __be64 guid; + int len, eep_stat; + u8 csum, *bguid; + int t = dd->unit; + struct qib_devdata *dd0 = qib_lookup(0); + + if (t && dd0->nguid > 1 && t <= dd0->nguid) { + u8 oguid; + + dd->base_guid = dd0->base_guid; + bguid = (u8 *) &dd->base_guid; + + oguid = bguid[7]; + bguid[7] += t; + if (oguid > bguid[7]) { + if (bguid[6] == 0xff) { + if (bguid[5] == 0xff) { + qib_dev_err(dd, + "Can't set GUID from base, wraps to OUI!\n"); + dd->base_guid = 0; + goto bail; + } + bguid[5]++; + } + bguid[6]++; + } + dd->nguid = 1; + goto bail; + } + + /* + * Read full flash, not just currently used part, since it may have + * been written with a newer definition. + * */ + len = sizeof(struct qib_flash); + buf = vmalloc(len); + if (!buf) + goto bail; + + /* + * Use "public" eeprom read function, which does locking and + * figures out device. This will migrate to chip-specific. + */ + eep_stat = qib_eeprom_read(dd, 0, buf, len); + + if (eep_stat) { + qib_dev_err(dd, "Failed reading GUID from eeprom\n"); + goto done; + } + ifp = (struct qib_flash *)buf; + + csum = flash_csum(ifp, 0); + if (csum != ifp->if_csum) { + qib_devinfo(dd->pcidev, + "Bad I2C flash checksum: 0x%x, not 0x%x\n", + csum, ifp->if_csum); + goto done; + } + if (*(__be64 *) ifp->if_guid == cpu_to_be64(0) || + *(__be64 *) ifp->if_guid == ~cpu_to_be64(0)) { + qib_dev_err(dd, + "Invalid GUID %llx from flash; ignoring\n", + *(unsigned long long *) ifp->if_guid); + /* don't allow GUID if all 0 or all 1's */ + goto done; + } + + /* complain, but allow it */ + if (*(u64 *) ifp->if_guid == 0x100007511000000ULL) + qib_devinfo(dd->pcidev, + "Warning, GUID %llx is default, probably not correct!\n", + *(unsigned long long *) ifp->if_guid); + + bguid = ifp->if_guid; + if (!bguid[0] && !bguid[1] && !bguid[2]) { + /* + * Original incorrect GUID format in flash; fix in + * core copy, by shifting up 2 octets; don't need to + * change top octet, since both it and shifted are 0. + */ + bguid[1] = bguid[3]; + bguid[2] = bguid[4]; + bguid[3] = 0; + bguid[4] = 0; + guid = *(__be64 *) ifp->if_guid; + } else + guid = *(__be64 *) ifp->if_guid; + dd->base_guid = guid; + dd->nguid = ifp->if_numguid; + /* + * Things are slightly complicated by the desire to transparently + * support both the Pathscale 10-digit serial number and the QLogic + * 13-character version. + */ + if ((ifp->if_fversion > 1) && ifp->if_sprefix[0] && + ((u8 *) ifp->if_sprefix)[0] != 0xFF) { + char *snp = dd->serial; + + /* + * This board has a Serial-prefix, which is stored + * elsewhere for backward-compatibility. + */ + memcpy(snp, ifp->if_sprefix, sizeof(ifp->if_sprefix)); + snp[sizeof(ifp->if_sprefix)] = '\0'; + len = strlen(snp); + snp += len; + len = sizeof(dd->serial) - len; + if (len > sizeof(ifp->if_serial)) + len = sizeof(ifp->if_serial); + memcpy(snp, ifp->if_serial, len); + } else { + memcpy(dd->serial, ifp->if_serial, sizeof(ifp->if_serial)); + } + if (!strstr(ifp->if_comment, "Tested successfully")) + qib_dev_err(dd, + "Board SN %s did not pass functional test: %s\n", + dd->serial, ifp->if_comment); + +done: + vfree(buf); + +bail:; +} + -- cgit v1.2.3