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/intel/iavf/iavf_client.c | 578 ++++++++++++++++++++++++++ 1 file changed, 578 insertions(+) create mode 100644 drivers/net/ethernet/intel/iavf/iavf_client.c (limited to 'drivers/net/ethernet/intel/iavf/iavf_client.c') diff --git a/drivers/net/ethernet/intel/iavf/iavf_client.c b/drivers/net/ethernet/intel/iavf/iavf_client.c new file mode 100644 index 000000000..93c903c02 --- /dev/null +++ b/drivers/net/ethernet/intel/iavf/iavf_client.c @@ -0,0 +1,578 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2013 - 2018 Intel Corporation. */ + +#include +#include + +#include "iavf.h" +#include "iavf_prototype.h" +#include "iavf_client.h" + +static +const char iavf_client_interface_version_str[] = IAVF_CLIENT_VERSION_STR; +static struct iavf_client *vf_registered_client; +static LIST_HEAD(iavf_devices); +static DEFINE_MUTEX(iavf_device_mutex); + +static u32 iavf_client_virtchnl_send(struct iavf_info *ldev, + struct iavf_client *client, + u8 *msg, u16 len); + +static int iavf_client_setup_qvlist(struct iavf_info *ldev, + struct iavf_client *client, + struct iavf_qvlist_info *qvlist_info); + +static struct iavf_ops iavf_lan_ops = { + .virtchnl_send = iavf_client_virtchnl_send, + .setup_qvlist = iavf_client_setup_qvlist, +}; + +/** + * iavf_client_get_params - retrieve relevant client parameters + * @vsi: VSI with parameters + * @params: client param struct + **/ +static +void iavf_client_get_params(struct iavf_vsi *vsi, struct iavf_params *params) +{ + int i; + + memset(params, 0, sizeof(struct iavf_params)); + params->mtu = vsi->netdev->mtu; + params->link_up = vsi->back->link_up; + + for (i = 0; i < IAVF_MAX_USER_PRIORITY; i++) { + params->qos.prio_qos[i].tc = 0; + params->qos.prio_qos[i].qs_handle = vsi->qs_handle; + } +} + +/** + * iavf_notify_client_message - call the client message receive callback + * @vsi: the VSI associated with this client + * @msg: message buffer + * @len: length of message + * + * If there is a client to this VSI, call the client + **/ +void iavf_notify_client_message(struct iavf_vsi *vsi, u8 *msg, u16 len) +{ + struct iavf_client_instance *cinst; + + if (!vsi) + return; + + cinst = vsi->back->cinst; + if (!cinst || !cinst->client || !cinst->client->ops || + !cinst->client->ops->virtchnl_receive) { + dev_dbg(&vsi->back->pdev->dev, + "Cannot locate client instance virtchnl_receive function\n"); + return; + } + cinst->client->ops->virtchnl_receive(&cinst->lan_info, cinst->client, + msg, len); +} + +/** + * iavf_notify_client_l2_params - call the client notify callback + * @vsi: the VSI with l2 param changes + * + * If there is a client to this VSI, call the client + **/ +void iavf_notify_client_l2_params(struct iavf_vsi *vsi) +{ + struct iavf_client_instance *cinst; + struct iavf_params params; + + if (!vsi) + return; + + cinst = vsi->back->cinst; + + if (!cinst || !cinst->client || !cinst->client->ops || + !cinst->client->ops->l2_param_change) { + dev_dbg(&vsi->back->pdev->dev, + "Cannot locate client instance l2_param_change function\n"); + return; + } + iavf_client_get_params(vsi, ¶ms); + cinst->lan_info.params = params; + cinst->client->ops->l2_param_change(&cinst->lan_info, cinst->client, + ¶ms); +} + +/** + * iavf_notify_client_open - call the client open callback + * @vsi: the VSI with netdev opened + * + * If there is a client to this netdev, call the client with open + **/ +void iavf_notify_client_open(struct iavf_vsi *vsi) +{ + struct iavf_adapter *adapter = vsi->back; + struct iavf_client_instance *cinst = adapter->cinst; + int ret; + + if (!cinst || !cinst->client || !cinst->client->ops || + !cinst->client->ops->open) { + dev_dbg(&vsi->back->pdev->dev, + "Cannot locate client instance open function\n"); + return; + } + if (!(test_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state))) { + ret = cinst->client->ops->open(&cinst->lan_info, cinst->client); + if (!ret) + set_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state); + } +} + +/** + * iavf_client_release_qvlist - send a message to the PF to release rdma qv map + * @ldev: pointer to L2 context. + * + * Return 0 on success or < 0 on error + **/ +static int iavf_client_release_qvlist(struct iavf_info *ldev) +{ + struct iavf_adapter *adapter = ldev->vf; + enum iavf_status err; + + if (adapter->aq_required) + return -EAGAIN; + + err = iavf_aq_send_msg_to_pf(&adapter->hw, + VIRTCHNL_OP_RELEASE_RDMA_IRQ_MAP, + IAVF_SUCCESS, NULL, 0, NULL); + + if (err) + dev_err(&adapter->pdev->dev, + "Unable to send RDMA vector release message to PF, error %d, aq status %d\n", + err, adapter->hw.aq.asq_last_status); + + return err; +} + +/** + * iavf_notify_client_close - call the client close callback + * @vsi: the VSI with netdev closed + * @reset: true when close called due to reset pending + * + * If there is a client to this netdev, call the client with close + **/ +void iavf_notify_client_close(struct iavf_vsi *vsi, bool reset) +{ + struct iavf_adapter *adapter = vsi->back; + struct iavf_client_instance *cinst = adapter->cinst; + + if (!cinst || !cinst->client || !cinst->client->ops || + !cinst->client->ops->close) { + dev_dbg(&vsi->back->pdev->dev, + "Cannot locate client instance close function\n"); + return; + } + cinst->client->ops->close(&cinst->lan_info, cinst->client, reset); + iavf_client_release_qvlist(&cinst->lan_info); + clear_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state); +} + +/** + * iavf_client_add_instance - add a client instance to the instance list + * @adapter: pointer to the board struct + * + * Returns cinst ptr on success, NULL on failure + **/ +static struct iavf_client_instance * +iavf_client_add_instance(struct iavf_adapter *adapter) +{ + struct iavf_client_instance *cinst = NULL; + struct iavf_vsi *vsi = &adapter->vsi; + struct netdev_hw_addr *mac = NULL; + struct iavf_params params; + + if (!vf_registered_client) + goto out; + + if (adapter->cinst) { + cinst = adapter->cinst; + goto out; + } + + cinst = kzalloc(sizeof(*cinst), GFP_KERNEL); + if (!cinst) + goto out; + + cinst->lan_info.vf = (void *)adapter; + cinst->lan_info.netdev = vsi->netdev; + cinst->lan_info.pcidev = adapter->pdev; + cinst->lan_info.fid = 0; + cinst->lan_info.ftype = IAVF_CLIENT_FTYPE_VF; + cinst->lan_info.hw_addr = adapter->hw.hw_addr; + cinst->lan_info.ops = &iavf_lan_ops; + cinst->lan_info.version.major = IAVF_CLIENT_VERSION_MAJOR; + cinst->lan_info.version.minor = IAVF_CLIENT_VERSION_MINOR; + cinst->lan_info.version.build = IAVF_CLIENT_VERSION_BUILD; + iavf_client_get_params(vsi, ¶ms); + cinst->lan_info.params = params; + set_bit(__IAVF_CLIENT_INSTANCE_NONE, &cinst->state); + + cinst->lan_info.msix_count = adapter->num_rdma_msix; + cinst->lan_info.msix_entries = + &adapter->msix_entries[adapter->rdma_base_vector]; + + mac = list_first_entry(&cinst->lan_info.netdev->dev_addrs.list, + struct netdev_hw_addr, list); + if (mac) + ether_addr_copy(cinst->lan_info.lanmac, mac->addr); + else + dev_err(&adapter->pdev->dev, "MAC address list is empty!\n"); + + cinst->client = vf_registered_client; + adapter->cinst = cinst; +out: + return cinst; +} + +/** + * iavf_client_del_instance - removes a client instance from the list + * @adapter: pointer to the board struct + * + **/ +static +void iavf_client_del_instance(struct iavf_adapter *adapter) +{ + kfree(adapter->cinst); + adapter->cinst = NULL; +} + +/** + * iavf_client_subtask - client maintenance work + * @adapter: board private structure + **/ +void iavf_client_subtask(struct iavf_adapter *adapter) +{ + struct iavf_client *client = vf_registered_client; + struct iavf_client_instance *cinst; + int ret = 0; + + if (adapter->state < __IAVF_DOWN) + return; + + /* first check client is registered */ + if (!client) + return; + + /* Add the client instance to the instance list */ + cinst = iavf_client_add_instance(adapter); + if (!cinst) + return; + + dev_info(&adapter->pdev->dev, "Added instance of Client %s\n", + client->name); + + if (!test_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state)) { + /* Send an Open request to the client */ + + if (client->ops && client->ops->open) + ret = client->ops->open(&cinst->lan_info, client); + if (!ret) + set_bit(__IAVF_CLIENT_INSTANCE_OPENED, + &cinst->state); + else + /* remove client instance */ + iavf_client_del_instance(adapter); + } +} + +/** + * iavf_lan_add_device - add a lan device struct to the list of lan devices + * @adapter: pointer to the board struct + * + * Returns 0 on success or none 0 on error + **/ +int iavf_lan_add_device(struct iavf_adapter *adapter) +{ + struct iavf_device *ldev; + int ret = 0; + + mutex_lock(&iavf_device_mutex); + list_for_each_entry(ldev, &iavf_devices, list) { + if (ldev->vf == adapter) { + ret = -EEXIST; + goto out; + } + } + ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); + if (!ldev) { + ret = -ENOMEM; + goto out; + } + ldev->vf = adapter; + INIT_LIST_HEAD(&ldev->list); + list_add(&ldev->list, &iavf_devices); + dev_info(&adapter->pdev->dev, "Added LAN device bus=0x%02x dev=0x%02x func=0x%02x\n", + adapter->hw.bus.bus_id, adapter->hw.bus.device, + adapter->hw.bus.func); + + /* Since in some cases register may have happened before a device gets + * added, we can schedule a subtask to go initiate the clients. + */ + adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED; + +out: + mutex_unlock(&iavf_device_mutex); + return ret; +} + +/** + * iavf_lan_del_device - removes a lan device from the device list + * @adapter: pointer to the board struct + * + * Returns 0 on success or non-0 on error + **/ +int iavf_lan_del_device(struct iavf_adapter *adapter) +{ + struct iavf_device *ldev, *tmp; + int ret = -ENODEV; + + mutex_lock(&iavf_device_mutex); + list_for_each_entry_safe(ldev, tmp, &iavf_devices, list) { + if (ldev->vf == adapter) { + dev_info(&adapter->pdev->dev, + "Deleted LAN device bus=0x%02x dev=0x%02x func=0x%02x\n", + adapter->hw.bus.bus_id, adapter->hw.bus.device, + adapter->hw.bus.func); + list_del(&ldev->list); + kfree(ldev); + ret = 0; + break; + } + } + + mutex_unlock(&iavf_device_mutex); + return ret; +} + +/** + * iavf_client_release - release client specific resources + * @client: pointer to the registered client + * + **/ +static void iavf_client_release(struct iavf_client *client) +{ + struct iavf_client_instance *cinst; + struct iavf_device *ldev; + struct iavf_adapter *adapter; + + mutex_lock(&iavf_device_mutex); + list_for_each_entry(ldev, &iavf_devices, list) { + adapter = ldev->vf; + cinst = adapter->cinst; + if (!cinst) + continue; + if (test_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state)) { + if (client->ops && client->ops->close) + client->ops->close(&cinst->lan_info, client, + false); + iavf_client_release_qvlist(&cinst->lan_info); + clear_bit(__IAVF_CLIENT_INSTANCE_OPENED, &cinst->state); + + dev_warn(&adapter->pdev->dev, + "Client %s instance closed\n", client->name); + } + /* delete the client instance */ + iavf_client_del_instance(adapter); + dev_info(&adapter->pdev->dev, "Deleted client instance of Client %s\n", + client->name); + } + mutex_unlock(&iavf_device_mutex); +} + +/** + * iavf_client_prepare - prepare client specific resources + * @client: pointer to the registered client + * + **/ +static void iavf_client_prepare(struct iavf_client *client) +{ + struct iavf_device *ldev; + struct iavf_adapter *adapter; + + mutex_lock(&iavf_device_mutex); + list_for_each_entry(ldev, &iavf_devices, list) { + adapter = ldev->vf; + /* Signal the watchdog to service the client */ + adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED; + } + mutex_unlock(&iavf_device_mutex); +} + +/** + * iavf_client_virtchnl_send - send a message to the PF instance + * @ldev: pointer to L2 context. + * @client: Client pointer. + * @msg: pointer to message buffer + * @len: message length + * + * Return 0 on success or < 0 on error + **/ +static u32 iavf_client_virtchnl_send(struct iavf_info *ldev, + struct iavf_client *client, + u8 *msg, u16 len) +{ + struct iavf_adapter *adapter = ldev->vf; + enum iavf_status err; + + if (adapter->aq_required) + return -EAGAIN; + + err = iavf_aq_send_msg_to_pf(&adapter->hw, VIRTCHNL_OP_RDMA, + IAVF_SUCCESS, msg, len, NULL); + if (err) + dev_err(&adapter->pdev->dev, "Unable to send RDMA message to PF, error %d, aq status %d\n", + err, adapter->hw.aq.asq_last_status); + + return err; +} + +/** + * iavf_client_setup_qvlist - send a message to the PF to setup rdma qv map + * @ldev: pointer to L2 context. + * @client: Client pointer. + * @qvlist_info: queue and vector list + * + * Return 0 on success or < 0 on error + **/ +static int iavf_client_setup_qvlist(struct iavf_info *ldev, + struct iavf_client *client, + struct iavf_qvlist_info *qvlist_info) +{ + struct virtchnl_rdma_qvlist_info *v_qvlist_info; + struct iavf_adapter *adapter = ldev->vf; + struct iavf_qv_info *qv_info; + enum iavf_status err; + u32 v_idx, i; + size_t msg_size; + + if (adapter->aq_required) + return -EAGAIN; + + /* A quick check on whether the vectors belong to the client */ + for (i = 0; i < qvlist_info->num_vectors; i++) { + qv_info = &qvlist_info->qv_info[i]; + if (!qv_info) + continue; + v_idx = qv_info->v_idx; + if ((v_idx >= + (adapter->rdma_base_vector + adapter->num_rdma_msix)) || + (v_idx < adapter->rdma_base_vector)) + return -EINVAL; + } + + v_qvlist_info = (struct virtchnl_rdma_qvlist_info *)qvlist_info; + msg_size = struct_size(v_qvlist_info, qv_info, + v_qvlist_info->num_vectors - 1); + + adapter->client_pending |= BIT(VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP); + err = iavf_aq_send_msg_to_pf(&adapter->hw, + VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP, IAVF_SUCCESS, + (u8 *)v_qvlist_info, msg_size, NULL); + + if (err) { + dev_err(&adapter->pdev->dev, + "Unable to send RDMA vector config message to PF, error %d, aq status %d\n", + err, adapter->hw.aq.asq_last_status); + goto out; + } + + err = -EBUSY; + for (i = 0; i < 5; i++) { + msleep(100); + if (!(adapter->client_pending & + BIT(VIRTCHNL_OP_CONFIG_RDMA_IRQ_MAP))) { + err = 0; + break; + } + } +out: + return err; +} + +/** + * iavf_register_client - Register a iavf client driver with the L2 driver + * @client: pointer to the iavf_client struct + * + * Returns 0 on success or non-0 on error + **/ +int iavf_register_client(struct iavf_client *client) +{ + int ret = 0; + + if (!client) { + ret = -EIO; + goto out; + } + + if (strlen(client->name) == 0) { + pr_info("iavf: Failed to register client with no name\n"); + ret = -EIO; + goto out; + } + + if (vf_registered_client) { + pr_info("iavf: Client %s has already been registered!\n", + client->name); + ret = -EEXIST; + goto out; + } + + if ((client->version.major != IAVF_CLIENT_VERSION_MAJOR) || + (client->version.minor != IAVF_CLIENT_VERSION_MINOR)) { + pr_info("iavf: Failed to register client %s due to mismatched client interface version\n", + client->name); + pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n", + client->version.major, client->version.minor, + client->version.build, + iavf_client_interface_version_str); + ret = -EIO; + goto out; + } + + vf_registered_client = client; + + iavf_client_prepare(client); + + pr_info("iavf: Registered client %s with return code %d\n", + client->name, ret); +out: + return ret; +} +EXPORT_SYMBOL(iavf_register_client); + +/** + * iavf_unregister_client - Unregister a iavf client driver with the L2 driver + * @client: pointer to the iavf_client struct + * + * Returns 0 on success or non-0 on error + **/ +int iavf_unregister_client(struct iavf_client *client) +{ + int ret = 0; + + /* When a unregister request comes through we would have to send + * a close for each of the client instances that were opened. + * client_release function is called to handle this. + */ + iavf_client_release(client); + + if (vf_registered_client != client) { + pr_info("iavf: Client %s has not been registered\n", + client->name); + ret = -ENODEV; + goto out; + } + vf_registered_client = NULL; + pr_info("iavf: Unregistered client %s\n", client->name); +out: + return ret; +} +EXPORT_SYMBOL(iavf_unregister_client); -- cgit v1.2.3