8a13362d49
This allows the "irdma" driver to communicate with the ice(4) driver to allow it access to the underlying device's hardware resources as well as synchronize access to shared resources. This interface already existed in the standalone out-of-tree 1.34.2 driver; this commit adds and enables it in the in-kernel driver. Note: Adds hack to module Makefile to compile interface/.m files These are required for the RDMA client interface, but they don't build as-is like the normal .c files. The source directory doesn't seem to be included by default, so add lines that specifically add them as libraries so that ice_rdma.h can be found and the interface files will compile. Signed-off-by: Eric Joyner <erj@FreeBSD.org> MFC after: 1 week Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D30889
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* Copyright (c) 2022, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*$FreeBSD$*/
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/**
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* @file ice_rdma_internal.h
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* @brief internal header for the RMDA driver interface setup
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*
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* Contains the definitions and functions used by the ice driver to setup the
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* RDMA driver interface. Functions and definitions in this file are not
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* shared with the RDMA client driver.
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*/
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#ifndef _ICE_RDMA_INTERNAL_H_
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#define _ICE_RDMA_INTERNAL_H_
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#include "ice_rdma.h"
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/* Forward declare the softc structure */
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struct ice_softc;
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/* Global sysctl variable indicating if the RDMA client interface is enabled */
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extern bool ice_enable_irdma;
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/**
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* @struct ice_rdma_entry
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* @brief RDMA peer list node
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*
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* Structure used to store peer entries for each PF in a linked list.
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*/
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struct ice_rdma_entry {
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LIST_ENTRY(ice_rdma_entry) node;
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struct ice_rdma_peer peer;
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bool attached;
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bool initiated;
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};
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#define ice_rdma_peer_to_entry(p) __containerof(p, struct ice_rdma_entry, peer)
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#define ice_rdma_entry_to_sc(e) __containerof(e, struct ice_softc, rdma_entry)
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#define ice_rdma_peer_to_sc(p) ice_rdma_entry_to_sc(ice_rdma_peer_to_entry(p))
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/**
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* @struct ice_rdma_peers
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* @brief Head list structure for the RDMA entry list
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*
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* Type defining the head of the linked list of RDMA entries.
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*/
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LIST_HEAD(ice_rdma_peers, ice_rdma_entry);
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/**
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* @struct ice_rdma_state
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* @brief global driver state for RDMA
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*
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* Contains global state shared across all PFs by the device driver, such as
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* the kobject class of the currently connected peer driver, and the linked
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* list of peer entries for each PF.
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*/
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struct ice_rdma_state {
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bool registered;
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kobj_class_t peer_class;
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struct sx mtx;
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struct ice_rdma_peers peers;
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};
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void ice_rdma_init(void);
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void ice_rdma_exit(void);
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int ice_rdma_pf_attach(struct ice_softc *sc);
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void ice_rdma_pf_detach(struct ice_softc *sc);
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int ice_rdma_pf_init(struct ice_softc *sc);
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int ice_rdma_pf_stop(struct ice_softc *sc);
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void ice_rdma_link_change(struct ice_softc *sc, int linkstate, uint64_t baudrate);
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void ice_rdma_notify_dcb_qos_change(struct ice_softc *sc);
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void ice_rdma_dcb_qos_update(struct ice_softc *sc, struct ice_port_info *pi);
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#endif
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