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/scsi/snic/snic_res.c | 281 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 drivers/scsi/snic/snic_res.c (limited to 'drivers/scsi/snic/snic_res.c') diff --git a/drivers/scsi/snic/snic_res.c b/drivers/scsi/snic/snic_res.c new file mode 100644 index 000000000..43f1a2823 --- /dev/null +++ b/drivers/scsi/snic/snic_res.c @@ -0,0 +1,281 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright 2014 Cisco Systems, Inc. All rights reserved. + +#include +#include +#include + +#include "wq_enet_desc.h" +#include "cq_enet_desc.h" +#include "vnic_resource.h" +#include "vnic_dev.h" +#include "vnic_wq.h" +#include "vnic_cq.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "snic.h" + +int +snic_get_vnic_config(struct snic *snic) +{ + struct vnic_snic_config *c = &snic->config; + int ret; + +#define GET_CONFIG(m) \ + do { \ + ret = svnic_dev_spec(snic->vdev, \ + offsetof(struct vnic_snic_config, m), \ + sizeof(c->m), \ + &c->m); \ + if (ret) { \ + SNIC_HOST_ERR(snic->shost, \ + "Error getting %s, %d\n", #m, ret); \ + return ret; \ + } \ + } while (0) + + GET_CONFIG(wq_enet_desc_count); + GET_CONFIG(maxdatafieldsize); + GET_CONFIG(intr_timer); + GET_CONFIG(intr_timer_type); + GET_CONFIG(flags); + GET_CONFIG(io_throttle_count); + GET_CONFIG(port_down_timeout); + GET_CONFIG(port_down_io_retries); + GET_CONFIG(luns_per_tgt); + GET_CONFIG(xpt_type); + GET_CONFIG(hid); + + c->wq_enet_desc_count = min_t(u32, + VNIC_SNIC_WQ_DESCS_MAX, + max_t(u32, + VNIC_SNIC_WQ_DESCS_MIN, + c->wq_enet_desc_count)); + + c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16); + + c->maxdatafieldsize = min_t(u32, + VNIC_SNIC_MAXDATAFIELDSIZE_MAX, + max_t(u32, + VNIC_SNIC_MAXDATAFIELDSIZE_MIN, + c->maxdatafieldsize)); + + c->io_throttle_count = min_t(u32, + VNIC_SNIC_IO_THROTTLE_COUNT_MAX, + max_t(u32, + VNIC_SNIC_IO_THROTTLE_COUNT_MIN, + c->io_throttle_count)); + + c->port_down_timeout = min_t(u32, + VNIC_SNIC_PORT_DOWN_TIMEOUT_MAX, + c->port_down_timeout); + + c->port_down_io_retries = min_t(u32, + VNIC_SNIC_PORT_DOWN_IO_RETRIES_MAX, + c->port_down_io_retries); + + c->luns_per_tgt = min_t(u32, + VNIC_SNIC_LUNS_PER_TARGET_MAX, + max_t(u32, + VNIC_SNIC_LUNS_PER_TARGET_MIN, + c->luns_per_tgt)); + + c->intr_timer = min_t(u32, VNIC_INTR_TIMER_MAX, c->intr_timer); + + SNIC_INFO("vNIC resources wq %d\n", c->wq_enet_desc_count); + SNIC_INFO("vNIC mtu %d intr timer %d\n", + c->maxdatafieldsize, + c->intr_timer); + + SNIC_INFO("vNIC flags 0x%x luns per tgt %d\n", + c->flags, + c->luns_per_tgt); + + SNIC_INFO("vNIC io throttle count %d\n", c->io_throttle_count); + SNIC_INFO("vNIC port down timeout %d port down io retries %d\n", + c->port_down_timeout, + c->port_down_io_retries); + + SNIC_INFO("vNIC back end type = %d\n", c->xpt_type); + SNIC_INFO("vNIC hid = %d\n", c->hid); + + return 0; +} + +void +snic_get_res_counts(struct snic *snic) +{ + snic->wq_count = svnic_dev_get_res_count(snic->vdev, RES_TYPE_WQ); + SNIC_BUG_ON(snic->wq_count == 0); + snic->cq_count = svnic_dev_get_res_count(snic->vdev, RES_TYPE_CQ); + SNIC_BUG_ON(snic->cq_count == 0); + snic->intr_count = svnic_dev_get_res_count(snic->vdev, + RES_TYPE_INTR_CTRL); + SNIC_BUG_ON(snic->intr_count == 0); +} + +void +snic_free_vnic_res(struct snic *snic) +{ + unsigned int i; + + for (i = 0; i < snic->wq_count; i++) + svnic_wq_free(&snic->wq[i]); + + for (i = 0; i < snic->cq_count; i++) + svnic_cq_free(&snic->cq[i]); + + for (i = 0; i < snic->intr_count; i++) + svnic_intr_free(&snic->intr[i]); +} + +int +snic_alloc_vnic_res(struct snic *snic) +{ + enum vnic_dev_intr_mode intr_mode; + unsigned int mask_on_assertion; + unsigned int intr_offset; + unsigned int err_intr_enable; + unsigned int err_intr_offset; + unsigned int i; + int ret; + + intr_mode = svnic_dev_get_intr_mode(snic->vdev); + + SNIC_INFO("vNIC interrupt mode: %s\n", + ((intr_mode == VNIC_DEV_INTR_MODE_INTX) ? + "Legacy PCI INTx" : + ((intr_mode == VNIC_DEV_INTR_MODE_MSI) ? + "MSI" : + ((intr_mode == VNIC_DEV_INTR_MODE_MSIX) ? + "MSI-X" : "Unknown")))); + + /* only MSI-X is supported */ + SNIC_BUG_ON(intr_mode != VNIC_DEV_INTR_MODE_MSIX); + + SNIC_INFO("wq %d cq %d intr %d\n", snic->wq_count, + snic->cq_count, + snic->intr_count); + + + /* Allocate WQs used for SCSI IOs */ + for (i = 0; i < snic->wq_count; i++) { + ret = svnic_wq_alloc(snic->vdev, + &snic->wq[i], + i, + snic->config.wq_enet_desc_count, + sizeof(struct wq_enet_desc)); + if (ret) + goto error_cleanup; + } + + /* CQ for each WQ */ + for (i = 0; i < snic->wq_count; i++) { + ret = svnic_cq_alloc(snic->vdev, + &snic->cq[i], + i, + snic->config.wq_enet_desc_count, + sizeof(struct cq_enet_wq_desc)); + if (ret) + goto error_cleanup; + } + + SNIC_BUG_ON(snic->cq_count != 2 * snic->wq_count); + /* CQ for FW TO host */ + for (i = snic->wq_count; i < snic->cq_count; i++) { + ret = svnic_cq_alloc(snic->vdev, + &snic->cq[i], + i, + (snic->config.wq_enet_desc_count * 3), + sizeof(struct snic_fw_req)); + if (ret) + goto error_cleanup; + } + + for (i = 0; i < snic->intr_count; i++) { + ret = svnic_intr_alloc(snic->vdev, &snic->intr[i], i); + if (ret) + goto error_cleanup; + } + + /* + * Init WQ Resources. + * WQ[0 to n] points to CQ[0 to n-1] + * firmware to host comm points to CQ[n to m+1] + */ + err_intr_enable = 1; + err_intr_offset = snic->err_intr_offset; + + for (i = 0; i < snic->wq_count; i++) { + svnic_wq_init(&snic->wq[i], + i, + err_intr_enable, + err_intr_offset); + } + + for (i = 0; i < snic->cq_count; i++) { + intr_offset = i; + + svnic_cq_init(&snic->cq[i], + 0 /* flow_control_enable */, + 1 /* color_enable */, + 0 /* cq_head */, + 0 /* cq_tail */, + 1 /* cq_tail_color */, + 1 /* interrupt_enable */, + 1 /* cq_entry_enable */, + 0 /* cq_message_enable */, + intr_offset, + 0 /* cq_message_addr */); + } + + /* + * Init INTR resources + * Assumption : snic is always in MSI-X mode + */ + SNIC_BUG_ON(intr_mode != VNIC_DEV_INTR_MODE_MSIX); + mask_on_assertion = 1; + + for (i = 0; i < snic->intr_count; i++) { + svnic_intr_init(&snic->intr[i], + snic->config.intr_timer, + snic->config.intr_timer_type, + mask_on_assertion); + } + + /* init the stats memory by making the first call here */ + ret = svnic_dev_stats_dump(snic->vdev, &snic->stats); + if (ret) { + SNIC_HOST_ERR(snic->shost, + "svnic_dev_stats_dump failed - x%x\n", + ret); + goto error_cleanup; + } + + /* Clear LIF stats */ + svnic_dev_stats_clear(snic->vdev); + ret = 0; + + return ret; + +error_cleanup: + snic_free_vnic_res(snic); + + return ret; +} + +void +snic_log_q_error(struct snic *snic) +{ + unsigned int i; + u32 err_status; + + for (i = 0; i < snic->wq_count; i++) { + err_status = ioread32(&snic->wq[i].ctrl->error_status); + if (err_status) + SNIC_HOST_ERR(snic->shost, + "WQ[%d] error status %d\n", + i, + err_status); + } +} /* end of snic_log_q_error */ -- cgit v1.2.3