/* * Copyright(c) 2017 Intel Corporation. * Copyright(c) 2021 Cornelis Networks. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * BSD LICENSE * * 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. * - Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* * This file contains OPX Virtual Network Interface Controller (VNIC) * Ethernet Management Agent (EMA) driver */ #include <linux/module.h> #include <linux/xarray.h> #include <rdma/ib_addr.h> #include <rdma/ib_verbs.h> #include <rdma/opa_smi.h> #include <rdma/opa_port_info.h> #include "opa_vnic_internal.h" char opa_vnic_driver_name[] = …; /* * The trap service level is kept in bits 3 to 7 in the trap_sl_rsvd * field in the class port info MAD. */ #define GET_TRAP_SL_FROM_CLASS_PORT_INFO(x) … /* Cap trap bursts to a reasonable limit good for normal cases */ #define OPA_VNIC_TRAP_BURST_LIMIT … /* * VNIC trap limit timeout. * Inverse of cap2_mask response time out (1.0737 secs) = 0.9 * secs approx IB spec 13.4.6.2.1 PortInfoSubnetTimeout and * 13.4.9 Traps. */ #define OPA_VNIC_TRAP_TIMEOUT … #define OPA_VNIC_UNSUP_ATTR … #define OPA_VNIC_INVAL_ATTR … #define OPA_VNIC_CLASS_CAP_TRAP … /* Maximum number of VNIC ports supported */ #define OPA_VNIC_MAX_NUM_VPORT … /** * struct opa_vnic_vema_port -- VNIC VEMA port details * @cport: pointer to port * @mad_agent: pointer to mad agent for port * @class_port_info: Class port info information. * @tid: Transaction id * @port_num: OPA port number * @vports: vnic ports * @event_handler: ib event handler * @lock: adapter interface lock */ struct opa_vnic_vema_port { … }; static int opa_vnic_vema_add_one(struct ib_device *device); static void opa_vnic_vema_rem_one(struct ib_device *device, void *client_data); static struct ib_client opa_vnic_client = …; /** * vema_get_vport_num -- Get the vnic from the mad * @recvd_mad: Received mad * * Return: returns value of the vnic port number */ static inline u8 vema_get_vport_num(struct opa_vnic_vema_mad *recvd_mad) { … } /** * vema_get_vport_adapter -- Get vnic port adapter from recvd mad * @recvd_mad: received mad * @port: ptr to port struct on which MAD was recvd * * Return: vnic adapter */ static inline struct opa_vnic_adapter * vema_get_vport_adapter(struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_port *port) { … } /** * vema_mac_tbl_req_ok -- Check if mac request has correct values * @mac_tbl: mac table * * This function checks for the validity of the offset and number of * entries required. * * Return: true if offset and num_entries are valid */ static inline bool vema_mac_tbl_req_ok(struct opa_veswport_mactable *mac_tbl) { … } /* * Return the power on default values in the port info structure * in big endian format as required by MAD. */ static inline void vema_get_pod_values(struct opa_veswport_info *port_info) { … } /** * vema_add_vport -- Add a new vnic port * @port: ptr to opa_vnic_vema_port struct * @vport_num: vnic port number (to be added) * * Return a pointer to the vnic adapter structure */ static struct opa_vnic_adapter *vema_add_vport(struct opa_vnic_vema_port *port, u8 vport_num) { … } /** * vema_get_class_port_info -- Get class info for port * @port: Port on whic MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function copies the latest class port info value set for the * port and stores it for generating traps */ static void vema_get_class_port_info(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_set_class_port_info -- Get class info for port * @port: Port on whic MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function updates the port class info for the specific vnic * and sets up the response mad data */ static void vema_set_class_port_info(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_get_veswport_info -- Get veswport info * @port: source port on which MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad */ static void vema_get_veswport_info(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_set_veswport_info -- Set veswport info * @port: source port on which MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function gets the port class infor for vnic */ static void vema_set_veswport_info(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_get_mac_entries -- Get MAC entries in VNIC MAC table * @port: source port on which MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function gets the MAC entries that are programmed into * the VNIC MAC forwarding table. It checks for the validity of * the index into the MAC table and the number of entries that * are to be retrieved. */ static void vema_get_mac_entries(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_set_mac_entries -- Set MAC entries in VNIC MAC table * @port: source port on which MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function sets the MAC entries in the VNIC forwarding table * It checks for the validity of the index and the number of forwarding * table entries to be programmed. */ static void vema_set_mac_entries(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_set_delete_vesw -- Reset VESW info to POD values * @port: source port on which MAD was received * @recvd_mad: pointer to the received mad * @rsp_mad: pointer to respose mad * * This function clears all the fields of veswport info for the requested vesw * and sets them back to the power-on default values. It does not delete the * vesw. */ static void vema_set_delete_vesw(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_get_mac_list -- Get the unicast/multicast macs. * @port: source port on which MAD was received * @recvd_mad: Received mad contains fields to set vnic parameters * @rsp_mad: Response mad to be built * @attr_id: Attribute ID indicating multicast or unicast mac list */ static void vema_get_mac_list(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad, u16 attr_id) { … } /** * vema_get_summary_counters -- Gets summary counters. * @port: source port on which MAD was received * @recvd_mad: Received mad contains fields to set vnic parameters * @rsp_mad: Response mad to be built */ static void vema_get_summary_counters(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_get_error_counters -- Gets summary counters. * @port: source port on which MAD was received * @recvd_mad: Received mad contains fields to set vnic parameters * @rsp_mad: Response mad to be built */ static void vema_get_error_counters(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_get -- Process received get MAD * @port: source port on which MAD was received * @recvd_mad: Received mad * @rsp_mad: Response mad to be built */ static void vema_get(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_set -- Process received set MAD * @port: source port on which MAD was received * @recvd_mad: Received mad contains fields to set vnic parameters * @rsp_mad: Response mad to be built */ static void vema_set(struct opa_vnic_vema_port *port, struct opa_vnic_vema_mad *recvd_mad, struct opa_vnic_vema_mad *rsp_mad) { … } /** * vema_send -- Send handler for VEMA MAD agent * @mad_agent: pointer to the mad agent * @mad_wc: pointer to mad send work completion information * * Free all the data structures associated with the sent MAD */ static void vema_send(struct ib_mad_agent *mad_agent, struct ib_mad_send_wc *mad_wc) { … } /** * vema_recv -- Recv handler for VEMA MAD agent * @mad_agent: pointer to the mad agent * @send_buf: Send buffer if found, else NULL * @mad_wc: pointer to mad send work completion information * * Handle only set and get methods and respond to other methods * as unsupported. Allocate response buffer and address handle * for the response MAD. */ static void vema_recv(struct ib_mad_agent *mad_agent, struct ib_mad_send_buf *send_buf, struct ib_mad_recv_wc *mad_wc) { … } /** * vema_get_port -- Gets the opa_vnic_vema_port * @cport: pointer to control dev * @port_num: Port number * * This function loops through the ports and returns * the opa_vnic_vema port structure that is associated * with the OPA port number * * Return: ptr to requested opa_vnic_vema_port strucure * if success, NULL if not */ static struct opa_vnic_vema_port * vema_get_port(struct opa_vnic_ctrl_port *cport, u8 port_num) { … } /** * opa_vnic_vema_send_trap -- This function sends a trap to the EM * @adapter: pointer to vnic adapter * @data: pointer to trap data filled by calling function * @lid: issuers lid (encap_slid from vesw_port_info) * * This function is called from the VNIC driver to send a trap if there * is somethng the EM should be notified about. These events currently * are * 1) UNICAST INTERFACE MACADDRESS changes * 2) MULTICAST INTERFACE MACADDRESS changes * 3) ETHERNET LINK STATUS changes * While allocating the send mad the remote site qpn used is 1 * as this is the well known QP. * */ void opa_vnic_vema_send_trap(struct opa_vnic_adapter *adapter, struct __opa_veswport_trap *data, u32 lid) { … } static void opa_vnic_event(struct ib_event_handler *handler, struct ib_event *record) { … } /** * vema_unregister -- Unregisters agent * @cport: pointer to control port * * This deletes the registration by VEMA for MADs */ static void vema_unregister(struct opa_vnic_ctrl_port *cport) { … } /** * vema_register -- Registers agent * @cport: pointer to control port * * This function registers the handlers for the VEMA MADs * * Return: returns 0 on success. non zero otherwise */ static int vema_register(struct opa_vnic_ctrl_port *cport) { … } /** * opa_vnic_ctrl_config_dev -- This function sends a trap to the EM * by way of ib_modify_port to indicate support for ethernet on the * fabric. * @cport: pointer to control port * @en: enable or disable ethernet on fabric support */ static void opa_vnic_ctrl_config_dev(struct opa_vnic_ctrl_port *cport, bool en) { … } /** * opa_vnic_vema_add_one -- Handle new ib device * @device: ib device pointer * * Allocate the vnic control port and initialize it. */ static int opa_vnic_vema_add_one(struct ib_device *device) { … } /** * opa_vnic_vema_rem_one -- Handle ib device removal * @device: ib device pointer * @client_data: ib client data * * Uninitialize and free the vnic control port. */ static void opa_vnic_vema_rem_one(struct ib_device *device, void *client_data) { … } static int __init opa_vnic_init(void) { … } module_init(…) …; static void opa_vnic_deinit(void) { … } module_exit(opa_vnic_deinit); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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