Notable changes include: - DSCP QoS Support (leveraging support added in rG9c950139051298831ce19d01ea5fb33ec6ea7f89) - Improved PFC handling and TC queue assignments (now all remaining queues are assigned to TC 0 when more than one TC is enabled and the number of available queues does not evenly divide between them) - Support for dumping the internal FW state for additional debugging by Intel support - Support for allowing "No FEC" to be a valid state for the LESM to negotiate when using non-standard compliant modules Also includes various bug fixes and smaller enhancements, too. Signed-off-by: Eric Joyner <erj@FreeBSD.org> Reviewed by: erj@ Tested by: Jeff Pieper <jeffrey.pieper@intel.com> MFC after: 3 days Relnotes: yes Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D38109
869 lines
24 KiB
C
869 lines
24 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.c
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* @brief RDMA client driver interface
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*
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* Functions to interface with the RDMA client driver, for enabling RMDA
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* functionality for the ice driver.
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*
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* The RDMA client interface is based on a simple kobject interface which is
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* defined by the rmda_if.m and irdma_di_if.m interfaces.
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*
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* The ice device driver provides the rmda_di_if.m interface methods, while
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* the client RDMA driver provides the irdma_if.m interface methods as an
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* extension ontop of the irdma_di_if kobject.
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*
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* The initial connection between drivers is done via the RDMA client driver
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* calling ice_rdma_register.
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*/
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#include "ice_iflib.h"
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#include "ice_rdma_internal.h"
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#include "irdma_if.h"
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#include "irdma_di_if.h"
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/**
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* @var ice_rdma
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* @brief global RDMA driver state
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*
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* Contains global state the driver uses to connect to a client RDMA interface
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* driver.
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*/
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static struct ice_rdma_state ice_rdma;
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/*
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* Helper function prototypes
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*/
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static int ice_rdma_pf_attach_locked(struct ice_softc *sc);
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static void ice_rdma_pf_detach_locked(struct ice_softc *sc);
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static int ice_rdma_check_version(struct ice_rdma_info *info);
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static void ice_rdma_cp_qos_info(struct ice_hw *hw,
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struct ice_dcbx_cfg *dcbx_cfg,
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struct ice_qos_params *qos_info);
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/*
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* RDMA Device Interface prototypes
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*/
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static int ice_rdma_pf_reset(struct ice_rdma_peer *peer);
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static int ice_rdma_pf_msix_init(struct ice_rdma_peer *peer,
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struct ice_rdma_msix_mapping *msix_info);
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static int ice_rdma_qset_register_request(struct ice_rdma_peer *peer,
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struct ice_rdma_qset_update *res);
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static int ice_rdma_update_vsi_filter(struct ice_rdma_peer *peer_dev,
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bool enable);
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static void ice_rdma_request_handler(struct ice_rdma_peer *peer,
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struct ice_rdma_request *req);
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/**
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* @var ice_rdma_di_methods
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* @brief RDMA driver interface methods
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*
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* Kobject methods implementing the driver-side interface for the RDMA peer
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* clients. This method table contains the operations which the client can
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* request from the driver.
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*
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* The client driver will then extend this kobject class with methods that the
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* driver can request from the client.
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*/
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static kobj_method_t ice_rdma_di_methods[] = {
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KOBJMETHOD(irdma_di_reset, ice_rdma_pf_reset),
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KOBJMETHOD(irdma_di_msix_init, ice_rdma_pf_msix_init),
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KOBJMETHOD(irdma_di_qset_register_request, ice_rdma_qset_register_request),
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KOBJMETHOD(irdma_di_vsi_filter_update, ice_rdma_update_vsi_filter),
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KOBJMETHOD(irdma_di_req_handler, ice_rdma_request_handler),
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KOBJMETHOD_END
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};
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/* Define ice_rdma_di class which will be extended by the iRDMA driver */
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DEFINE_CLASS_0(ice_rdma_di, ice_rdma_di_class, ice_rdma_di_methods, sizeof(struct ice_rdma_peer));
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/**
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* ice_rdma_pf_reset - RDMA client interface requested a reset
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* @peer: the RDMA peer client structure
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*
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* Implements IRDMA_DI_RESET, called by the RDMA client driver to request
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* a reset of an ice driver device.
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*/
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static int
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ice_rdma_pf_reset(struct ice_rdma_peer *peer)
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{
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struct ice_softc *sc = ice_rdma_peer_to_sc(peer);
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/*
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* Request that the driver re-initialize by bringing the interface
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* down and up.
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*/
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ice_request_stack_reinit(sc);
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return (0);
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}
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/**
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* ice_rdma_pf_msix_init - RDMA client interface request MSI-X initialization
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* @peer: the RDMA peer client structure
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* @msix_info: requested MSI-X mapping
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*
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* Implements IRDMA_DI_MSIX_INIT, called by the RDMA client driver to
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* initialize the MSI-X resources required for RDMA functionality.
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*/
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static int
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ice_rdma_pf_msix_init(struct ice_rdma_peer *peer,
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struct ice_rdma_msix_mapping __unused *msix_info)
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{
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struct ice_softc *sc = ice_rdma_peer_to_sc(peer);
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MPASS(msix_info != NULL);
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device_printf(sc->dev, "%s: iRDMA MSI-X initialization request is not yet implemented\n", __func__);
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/* TODO: implement MSI-X initialization for RDMA */
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return (ENOSYS);
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}
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/**
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* ice_rdma_register_request - RDMA client interface request qset
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* registration or unregistration
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* @peer: the RDMA peer client structure
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* @res: resources to be registered or unregistered
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*/
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static int
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ice_rdma_qset_register_request(struct ice_rdma_peer *peer, struct ice_rdma_qset_update *res)
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{
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struct ice_softc *sc = ice_rdma_peer_to_sc(peer);
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struct ice_vsi *vsi = NULL;
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struct ice_dcbx_cfg *dcbx_cfg;
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struct ice_hw *hw = &sc->hw;
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enum ice_status status;
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int count, i, ret = 0;
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uint32_t *qset_teid;
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uint16_t *qs_handle;
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uint16_t max_rdmaqs[ICE_MAX_TRAFFIC_CLASS];
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uint16_t vsi_id;
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uint8_t ena_tc = 0;
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if (!res)
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return -EINVAL;
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if (res->cnt_req > ICE_MAX_TXQ_PER_TXQG)
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return -EINVAL;
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switch(res->res_type) {
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case ICE_RDMA_QSET_ALLOC:
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count = res->cnt_req;
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vsi_id = peer->pf_vsi_num;
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break;
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case ICE_RDMA_QSET_FREE:
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count = res->res_allocated;
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vsi_id = res->qsets.vsi_id;
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break;
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default:
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return -EINVAL;
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}
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qset_teid = (uint32_t *)ice_calloc(hw, count, sizeof(*qset_teid));
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if (!qset_teid)
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return -ENOMEM;
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qs_handle = (uint16_t *)ice_calloc(hw, count, sizeof(*qs_handle));
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if (!qs_handle) {
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ice_free(hw, qset_teid);
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return -ENOMEM;
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}
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ice_for_each_traffic_class(i)
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max_rdmaqs[i] = 0;
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for (i = 0; i < sc->num_available_vsi; i++) {
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if (sc->all_vsi[i] &&
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ice_get_hw_vsi_num(hw, sc->all_vsi[i]->idx) == vsi_id) {
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vsi = sc->all_vsi[i];
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break;
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}
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}
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if (!vsi) {
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ice_debug(hw, ICE_DBG_RDMA, "RDMA QSet invalid VSI\n");
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ret = -EINVAL;
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goto out;
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}
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if (sc != vsi->sc) {
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ice_debug(hw, ICE_DBG_RDMA, "VSI is tied to unexpected device\n");
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ret = -EXDEV;
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goto out;
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}
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for (i = 0; i < count; i++) {
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struct ice_rdma_qset_params *qset;
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qset = &res->qsets;
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if (qset->vsi_id != peer->pf_vsi_num) {
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ice_debug(hw, ICE_DBG_RDMA, "RDMA QSet invalid VSI requested %d %d\n",
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qset->vsi_id, peer->pf_vsi_num);
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ret = -EINVAL;
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goto out;
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}
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max_rdmaqs[qset->tc]++;
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qs_handle[i] = qset->qs_handle;
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qset_teid[i] = qset->teid;
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}
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switch(res->res_type) {
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case ICE_RDMA_QSET_ALLOC:
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dcbx_cfg = &hw->port_info->qos_cfg.local_dcbx_cfg;
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ena_tc = ice_dcb_get_tc_map(dcbx_cfg);
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ice_debug(hw, ICE_DBG_RDMA, "%s:%d ena_tc=%x\n", __func__, __LINE__, ena_tc);
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status = ice_cfg_vsi_rdma(hw->port_info, vsi->idx, ena_tc,
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max_rdmaqs);
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if (status) {
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ice_debug(hw, ICE_DBG_RDMA, "Failed VSI RDMA qset config\n");
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ret = -EINVAL;
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goto out;
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}
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for (i = 0; i < count; i++) {
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struct ice_rdma_qset_params *qset;
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qset = &res->qsets;
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status = ice_ena_vsi_rdma_qset(hw->port_info, vsi->idx,
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qset->tc, &qs_handle[i], 1,
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&qset_teid[i]);
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if (status) {
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ice_debug(hw, ICE_DBG_RDMA, "Failed VSI RDMA qset enable\n");
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ret = -EINVAL;
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goto out;
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}
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qset->teid = qset_teid[i];
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}
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break;
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case ICE_RDMA_QSET_FREE:
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status = ice_dis_vsi_rdma_qset(hw->port_info, count, qset_teid, qs_handle);
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if (status)
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ret = -EINVAL;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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out:
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ice_free(hw, qs_handle);
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ice_free(hw, qset_teid);
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return ret;
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}
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|
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/**
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* ice_rdma_update_vsi_filter - configure vsi information
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* when opening or closing rdma driver
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* @peer: the RDMA peer client structure
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* @enable: enable or disable the rdma filter
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*/
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static int
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ice_rdma_update_vsi_filter(struct ice_rdma_peer *peer,
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bool enable)
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{
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struct ice_softc *sc = ice_rdma_peer_to_sc(peer);
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struct ice_vsi *vsi;
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int ret;
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vsi = &sc->pf_vsi;
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if (!vsi)
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return -EINVAL;
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|
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ret = ice_cfg_iwarp_fltr(&sc->hw, vsi->idx, enable);
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if (ret) {
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device_printf(sc->dev, "Failed to %sable iWARP filtering\n",
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enable ? "en" : "dis");
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} else {
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if (enable)
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vsi->info.q_opt_flags |= ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
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else
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vsi->info.q_opt_flags &= ~ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
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}
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return ret;
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}
|
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|
|
/**
|
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* ice_rdma_request_handler - handle requests incoming from RDMA driver
|
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* @peer: the RDMA peer client structure
|
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* @req: structure containing request
|
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*/
|
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static void
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ice_rdma_request_handler(struct ice_rdma_peer *peer,
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struct ice_rdma_request *req)
|
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{
|
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if (!req || !peer) {
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log(LOG_WARNING, "%s: peer or req are not valid\n", __func__);
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return;
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}
|
|
|
|
switch(req->type) {
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case ICE_RDMA_EVENT_RESET:
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|
break;
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|
case ICE_RDMA_EVENT_QSET_REGISTER:
|
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ice_rdma_qset_register_request(peer, &req->res);
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break;
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case ICE_RDMA_EVENT_VSI_FILTER_UPDATE:
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ice_rdma_update_vsi_filter(peer, req->enable_filter);
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break;
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|
default:
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|
log(LOG_WARNING, "%s: Event %d not supported\n", __func__, req->type);
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break;
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|
}
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_cp_qos_info - gather current QOS/DCB settings in LAN to pass
|
|
* to RDMA driver
|
|
* @hw: ice hw structure
|
|
* @dcbx_cfg: current DCB settings in ice driver
|
|
* @qos_info: destination of the DCB settings
|
|
*/
|
|
static void
|
|
ice_rdma_cp_qos_info(struct ice_hw *hw, struct ice_dcbx_cfg *dcbx_cfg,
|
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struct ice_qos_params *qos_info)
|
|
{
|
|
u32 up2tc;
|
|
u8 j;
|
|
u8 num_tc = 0;
|
|
u8 val_tc = 0; /* number of TC for validation */
|
|
u8 cnt_tc = 0;
|
|
|
|
/* setup qos_info fields with defaults */
|
|
qos_info->num_apps = 0;
|
|
qos_info->num_tc = 1;
|
|
|
|
for (j = 0; j < ICE_TC_MAX_USER_PRIORITY; j++)
|
|
qos_info->up2tc[j] = 0;
|
|
|
|
qos_info->tc_info[0].rel_bw = 100;
|
|
for (j = 1; j < IEEE_8021QAZ_MAX_TCS; j++)
|
|
qos_info->tc_info[j].rel_bw = 0;
|
|
|
|
/* gather current values */
|
|
up2tc = rd32(hw, PRTDCB_TUP2TC);
|
|
qos_info->num_apps = dcbx_cfg->numapps;
|
|
|
|
for (j = 0; j < ICE_MAX_TRAFFIC_CLASS; j++) {
|
|
num_tc |= BIT(dcbx_cfg->etscfg.prio_table[j]);
|
|
}
|
|
for (j = 0; j < ICE_MAX_TRAFFIC_CLASS; j++) {
|
|
if (num_tc & BIT(j)) {
|
|
cnt_tc++;
|
|
val_tc |= BIT(j);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
qos_info->num_tc = (val_tc == num_tc && num_tc != 0) ? cnt_tc : 1;
|
|
for (j = 0; j < ICE_TC_MAX_USER_PRIORITY; j++)
|
|
qos_info->up2tc[j] = (up2tc >> (j * 3)) & 0x7;
|
|
|
|
for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++)
|
|
qos_info->tc_info[j].rel_bw = dcbx_cfg->etscfg.tcbwtable[j];
|
|
for (j = 0; j < qos_info->num_apps; j++) {
|
|
qos_info->apps[j].priority = dcbx_cfg->app[j].priority;
|
|
qos_info->apps[j].prot_id = dcbx_cfg->app[j].prot_id;
|
|
qos_info->apps[j].selector = dcbx_cfg->app[j].selector;
|
|
}
|
|
|
|
/* Gather DSCP-to-TC mapping and QoS/PFC mode */
|
|
memcpy(qos_info->dscp_map, dcbx_cfg->dscp_map, sizeof(qos_info->dscp_map));
|
|
qos_info->pfc_mode = dcbx_cfg->pfc_mode;
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_check_version - Check that the provided RDMA version is compatible
|
|
* @info: the RDMA client information structure
|
|
*
|
|
* Verify that the client RDMA driver provided a version that is compatible
|
|
* with the driver interface.
|
|
*/
|
|
static int
|
|
ice_rdma_check_version(struct ice_rdma_info *info)
|
|
{
|
|
/* Make sure the MAJOR version matches */
|
|
if (info->major_version != ICE_RDMA_MAJOR_VERSION) {
|
|
log(LOG_WARNING, "%s: the iRDMA driver requested version %d.%d.%d, but this driver only supports major version %d.x.x\n",
|
|
__func__,
|
|
info->major_version, info->minor_version, info->patch_version,
|
|
ICE_RDMA_MAJOR_VERSION);
|
|
return (ENOTSUP);
|
|
}
|
|
|
|
/*
|
|
* Make sure that the MINOR version is compatible.
|
|
*
|
|
* This means that the RDMA client driver version MUST not be greater
|
|
* than the version provided by the driver, as it would indicate that
|
|
* the RDMA client expects features which are not supported by the
|
|
* main driver.
|
|
*/
|
|
if (info->minor_version > ICE_RDMA_MINOR_VERSION) {
|
|
log(LOG_WARNING, "%s: the iRDMA driver requested version %d.%d.%d, but this driver only supports up to minor version %d.%d.x\n",
|
|
__func__,
|
|
info->major_version, info->minor_version, info->patch_version,
|
|
ICE_RDMA_MAJOR_VERSION, ICE_RDMA_MINOR_VERSION);
|
|
return (ENOTSUP);
|
|
}
|
|
|
|
/*
|
|
* Make sure that the PATCH version is compatible.
|
|
*
|
|
* This means that the RDMA client version MUST not be greater than
|
|
* the version provided by the driver, as it may indicate that the
|
|
* RDMA client expects certain backwards compatible bug fixes which
|
|
* are not implemented by this version of the main driver.
|
|
*/
|
|
if ((info->minor_version == ICE_RDMA_MINOR_VERSION) &&
|
|
(info->patch_version > ICE_RDMA_PATCH_VERSION)) {
|
|
log(LOG_WARNING, "%s: the iRDMA driver requested version %d.%d.%d, but this driver only supports up to patch version %d.%d.%d\n",
|
|
__func__,
|
|
info->major_version, info->minor_version, info->patch_version,
|
|
ICE_RDMA_MAJOR_VERSION, ICE_RDMA_MINOR_VERSION, ICE_RDMA_PATCH_VERSION);
|
|
return (ENOTSUP);
|
|
}
|
|
|
|
/* Make sure that the kobject class is initialized */
|
|
if (info->rdma_class == NULL) {
|
|
log(LOG_WARNING, "%s: the iRDMA driver did not specify a kobject interface\n",
|
|
__func__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_register - Register an RDMA client driver
|
|
* @info: the RDMA client information structure
|
|
*
|
|
* Called by the RDMA client driver on load. Used to initialize the RDMA
|
|
* client driver interface and enable interop between the ice driver and the
|
|
* RDMA client driver.
|
|
*
|
|
* The RDMA client driver must provide the version number it expects, along
|
|
* with a pointer to a kobject class that extends the irdma_di_if class, and
|
|
* implements the irdma_if class interface.
|
|
*/
|
|
int
|
|
ice_rdma_register(struct ice_rdma_info *info)
|
|
{
|
|
struct ice_rdma_entry *entry;
|
|
struct ice_softc *sc;
|
|
int err = 0;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
|
|
if (!ice_enable_irdma) {
|
|
log(LOG_INFO, "%s: The iRDMA driver interface has been disabled\n", __func__);
|
|
err = (ECONNREFUSED);
|
|
goto return_unlock;
|
|
}
|
|
|
|
if (ice_rdma.registered) {
|
|
log(LOG_WARNING, "%s: iRDMA driver already registered\n", __func__);
|
|
err = (EBUSY);
|
|
goto return_unlock;
|
|
}
|
|
|
|
/* Make sure the iRDMA version is compatible */
|
|
err = ice_rdma_check_version(info);
|
|
if (err)
|
|
goto return_unlock;
|
|
|
|
log(LOG_INFO, "%s: iRDMA driver registered using version %d.%d.%d\n",
|
|
__func__, info->major_version, info->minor_version, info->patch_version);
|
|
|
|
ice_rdma.peer_class = info->rdma_class;
|
|
|
|
/*
|
|
* Initialize the kobject interface and notify the RDMA client of each
|
|
* existing PF interface.
|
|
*/
|
|
LIST_FOREACH(entry, &ice_rdma.peers, node) {
|
|
kobj_init((kobj_t)&entry->peer, ice_rdma.peer_class);
|
|
/* Gather DCB/QOS info into peer */
|
|
sc = __containerof(entry, struct ice_softc, rdma_entry);
|
|
memset(&entry->peer.initial_qos_info, 0, sizeof(entry->peer.initial_qos_info));
|
|
ice_rdma_cp_qos_info(&sc->hw, &sc->hw.port_info->qos_cfg.local_dcbx_cfg,
|
|
&entry->peer.initial_qos_info);
|
|
|
|
IRDMA_PROBE(&entry->peer);
|
|
if (entry->initiated)
|
|
IRDMA_OPEN(&entry->peer);
|
|
}
|
|
ice_rdma.registered = true;
|
|
|
|
return_unlock:
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
|
|
return (err);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_unregister - Unregister an RDMA client driver
|
|
*
|
|
* Called by the RDMA client driver on unload. Used to de-initialize the RDMA
|
|
* client driver interface and shut down communication between the ice driver
|
|
* and the RDMA client driver.
|
|
*/
|
|
int
|
|
ice_rdma_unregister(void)
|
|
{
|
|
struct ice_rdma_entry *entry;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
|
|
if (!ice_rdma.registered) {
|
|
log(LOG_WARNING, "%s: iRDMA driver was not previously registered\n",
|
|
__func__);
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
return (ENOENT);
|
|
}
|
|
|
|
log(LOG_INFO, "%s: iRDMA driver unregistered\n", __func__);
|
|
ice_rdma.registered = false;
|
|
ice_rdma.peer_class = NULL;
|
|
|
|
/*
|
|
* Release the kobject interface for each of the existing PF
|
|
* interfaces. Note that we do not notify the client about removing
|
|
* each PF, as it is assumed that the client will have already cleaned
|
|
* up any associated resources when it is unregistered.
|
|
*/
|
|
LIST_FOREACH(entry, &ice_rdma.peers, node)
|
|
kobj_delete((kobj_t)&entry->peer, NULL);
|
|
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_init - RDMA driver init routine
|
|
*
|
|
* Called during ice driver module initialization to setup the RDMA client
|
|
* interface mutex and RDMA peer structure list.
|
|
*/
|
|
void
|
|
ice_rdma_init(void)
|
|
{
|
|
LIST_INIT(&ice_rdma.peers);
|
|
sx_init_flags(&ice_rdma.mtx, "ice rdma interface", SX_DUPOK);
|
|
|
|
ice_rdma.registered = false;
|
|
ice_rdma.peer_class = NULL;
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_exit - RDMA driver exit routine
|
|
*
|
|
* Called during ice driver module exit to shutdown the RDMA client interface
|
|
* mutex.
|
|
*/
|
|
void
|
|
ice_rdma_exit(void)
|
|
{
|
|
MPASS(LIST_EMPTY(&ice_rdma.peers));
|
|
sx_destroy(&ice_rdma.mtx);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_attach_locked - Prepare a PF for RDMA connections
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Initialize a peer entry for this PF and add it to the RDMA interface list.
|
|
* Notify the client RDMA driver of a new PF device.
|
|
*
|
|
* @pre must be called while holding the ice_rdma mutex.
|
|
*/
|
|
static int
|
|
ice_rdma_pf_attach_locked(struct ice_softc *sc)
|
|
{
|
|
struct ice_rdma_entry *entry;
|
|
|
|
/* Do not attach the PF unless RDMA is supported */
|
|
if (!ice_is_bit_set(sc->feat_cap, ICE_FEATURE_RDMA))
|
|
return (0);
|
|
|
|
entry = &sc->rdma_entry;
|
|
if (entry->attached) {
|
|
device_printf(sc->dev, "iRDMA peer entry already exists\n");
|
|
return (EEXIST);
|
|
}
|
|
|
|
entry->attached = true;
|
|
entry->peer.dev = sc->dev;
|
|
entry->peer.ifp = sc->ifp;
|
|
entry->peer.pf_id = sc->hw.pf_id;
|
|
entry->peer.pci_mem = sc->bar0.res;
|
|
entry->peer.pf_vsi_num = ice_get_hw_vsi_num(&sc->hw, sc->pf_vsi.idx);
|
|
if (sc->rdma_imap && sc->rdma_imap[0] != ICE_INVALID_RES_IDX &&
|
|
sc->irdma_vectors > 0) {
|
|
entry->peer.msix.base = sc->rdma_imap[0];
|
|
entry->peer.msix.count = sc->irdma_vectors;
|
|
}
|
|
|
|
/* Gather DCB/QOS info into peer */
|
|
memset(&entry->peer.initial_qos_info, 0, sizeof(entry->peer.initial_qos_info));
|
|
ice_rdma_cp_qos_info(&sc->hw, &sc->hw.port_info->qos_cfg.local_dcbx_cfg,
|
|
&entry->peer.initial_qos_info);
|
|
|
|
/*
|
|
* If the RDMA client driver has already registered, initialize the
|
|
* kobject and notify the client of a new PF
|
|
*/
|
|
if (ice_rdma.registered) {
|
|
kobj_init((kobj_t)&entry->peer, ice_rdma.peer_class);
|
|
IRDMA_PROBE(&entry->peer);
|
|
}
|
|
|
|
LIST_INSERT_HEAD(&ice_rdma.peers, entry, node);
|
|
|
|
ice_set_bit(ICE_FEATURE_RDMA, sc->feat_en);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_attach - Notify the RDMA client of a new PF
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Called during PF attach to notify the RDMA client of a new PF.
|
|
*/
|
|
int
|
|
ice_rdma_pf_attach(struct ice_softc *sc)
|
|
{
|
|
int err;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
err = ice_rdma_pf_attach_locked(sc);
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
|
|
return (err);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_detach_locked - Notify the RDMA client on PF detach
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Notify the RDMA peer client driver of removal of a PF, and release any
|
|
* RDMA-specific resources associated with that PF. Remove the PF from the
|
|
* list of available RDMA entries.
|
|
*
|
|
* @pre must be called while holding the ice_rdma mutex.
|
|
*/
|
|
static void
|
|
ice_rdma_pf_detach_locked(struct ice_softc *sc)
|
|
{
|
|
struct ice_rdma_entry *entry;
|
|
|
|
/* No need to detach the PF if RDMA is not enabled */
|
|
if (!ice_is_bit_set(sc->feat_en, ICE_FEATURE_RDMA))
|
|
return;
|
|
|
|
entry = &sc->rdma_entry;
|
|
if (!entry->attached) {
|
|
device_printf(sc->dev, "iRDMA peer entry was not attached\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If the RDMA client driver is registered, notify the client that
|
|
* a PF has been removed, and release the kobject reference.
|
|
*/
|
|
if (ice_rdma.registered) {
|
|
IRDMA_REMOVE(&entry->peer);
|
|
kobj_delete((kobj_t)&entry->peer, NULL);
|
|
}
|
|
|
|
LIST_REMOVE(entry, node);
|
|
entry->attached = false;
|
|
|
|
ice_clear_bit(ICE_FEATURE_RDMA, sc->feat_en);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_detach - Notify the RDMA client of a PF detaching
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Take the ice_rdma mutex and then notify the RDMA client that a PF has been
|
|
* removed.
|
|
*/
|
|
void
|
|
ice_rdma_pf_detach(struct ice_softc *sc)
|
|
{
|
|
sx_xlock(&ice_rdma.mtx);
|
|
ice_rdma_pf_detach_locked(sc);
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_init - Notify the RDMA client that a PF has initialized
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Called by the ice driver when a PF has been initialized. Notifies the RDMA
|
|
* client that a PF is up and ready to operate.
|
|
*/
|
|
int
|
|
ice_rdma_pf_init(struct ice_softc *sc)
|
|
{
|
|
struct ice_rdma_peer *peer = &sc->rdma_entry.peer;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
|
|
/* Update the MTU */
|
|
peer->mtu = if_getmtu(sc->ifp);
|
|
sc->rdma_entry.initiated = true;
|
|
|
|
if (sc->rdma_entry.attached && ice_rdma.registered) {
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
return IRDMA_OPEN(peer);
|
|
}
|
|
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_pf_stop - Notify the RDMA client of a stopped PF device
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Called by the ice driver when a PF is stopped. Notifies the RDMA client
|
|
* driver that the PF has stopped and is not ready to operate.
|
|
*/
|
|
int
|
|
ice_rdma_pf_stop(struct ice_softc *sc)
|
|
{
|
|
sx_xlock(&ice_rdma.mtx);
|
|
|
|
sc->rdma_entry.initiated = false;
|
|
if (sc->rdma_entry.attached && ice_rdma.registered) {
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
return IRDMA_CLOSE(&sc->rdma_entry.peer);
|
|
}
|
|
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_link_change - Notify RDMA client of a change in link status
|
|
* @sc: the ice driver softc
|
|
* @linkstate: the link status
|
|
* @baudrate: the link rate in bits per second
|
|
*
|
|
* Notify the RDMA client of a link status change, by sending it the new link
|
|
* state and baudrate.
|
|
*
|
|
* The link state is represented the same was as in the ifnet structure. It
|
|
* should be LINK_STATE_UNKNOWN, LINK_STATE_DOWN, or LINK_STATE_UP.
|
|
*/
|
|
void
|
|
ice_rdma_link_change(struct ice_softc *sc, int linkstate, uint64_t baudrate)
|
|
{
|
|
struct ice_rdma_peer *peer = &sc->rdma_entry.peer;
|
|
struct ice_rdma_event event;
|
|
|
|
memset(&event, 0, sizeof(struct ice_rdma_event));
|
|
event.type = ICE_RDMA_EVENT_LINK_CHANGE;
|
|
event.linkstate = linkstate;
|
|
event.baudrate = baudrate;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
|
|
if (sc->rdma_entry.attached && ice_rdma.registered)
|
|
IRDMA_EVENT_HANDLER(peer, &event);
|
|
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_notify_dcb_qos_change - notify RDMA driver to pause traffic
|
|
* @sc: the ice driver softc
|
|
*
|
|
* Notify the RDMA driver that QOS/DCB settings are about to change.
|
|
* Once the function return, all the QPs should be suspended.
|
|
*/
|
|
void
|
|
ice_rdma_notify_dcb_qos_change(struct ice_softc *sc)
|
|
{
|
|
struct ice_rdma_peer *peer = &sc->rdma_entry.peer;
|
|
struct ice_rdma_event event;
|
|
|
|
memset(&event, 0, sizeof(struct ice_rdma_event));
|
|
event.type = ICE_RDMA_EVENT_TC_CHANGE;
|
|
/* pre-event */
|
|
event.prep = true;
|
|
|
|
sx_xlock(&ice_rdma.mtx);
|
|
if (sc->rdma_entry.attached && ice_rdma.registered)
|
|
IRDMA_EVENT_HANDLER(peer, &event);
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
}
|
|
|
|
/**
|
|
* ice_rdma_dcb_qos_update - pass the changed dcb settings to RDMA driver
|
|
* @sc: the ice driver softc
|
|
* @pi: the port info structure
|
|
*
|
|
* Pass the changed DCB settings to RDMA traffic. This function should be
|
|
* called only after ice_rdma_notify_dcb_qos_change has been called and
|
|
* returned before. After the function returns, all the RDMA traffic
|
|
* should be resumed.
|
|
*/
|
|
void
|
|
ice_rdma_dcb_qos_update(struct ice_softc *sc, struct ice_port_info *pi)
|
|
{
|
|
struct ice_rdma_peer *peer = &sc->rdma_entry.peer;
|
|
struct ice_rdma_event event;
|
|
|
|
memset(&event, 0, sizeof(struct ice_rdma_event));
|
|
event.type = ICE_RDMA_EVENT_TC_CHANGE;
|
|
/* post-event */
|
|
event.prep = false;
|
|
|
|
/* gather current configuration */
|
|
ice_rdma_cp_qos_info(&sc->hw, &pi->qos_cfg.local_dcbx_cfg, &event.port_qos);
|
|
sx_xlock(&ice_rdma.mtx);
|
|
if (sc->rdma_entry.attached && ice_rdma.registered)
|
|
IRDMA_EVENT_HANDLER(peer, &event);
|
|
sx_xunlock(&ice_rdma.mtx);
|
|
}
|