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1fb7f8973f
Current code uses many different types when dealing with a port of a RDMA device: u8, unsigned int and u32. Switch to u32 to clean up the logic. This allows us to make (at least) the core view consistent and use the same type. Unfortunately not all places can be converted. Many uverbs functions expect port to be u8 so keep those places in order not to break UAPIs. HW/Spec defined values must also not be changed. With the switch to u32 we now can support devices with more than 255 ports. U32_MAX is reserved to make control logic a bit easier to deal with. As a device with U32_MAX ports probably isn't going to happen any time soon this seems like a non issue. When a device with more than 255 ports is created uverbs will report the RDMA device as having 255 ports as this is the max currently supported. The verbs interface is not changed yet because the IBTA spec limits the port size in too many places to be u8 and all applications that relies in verbs won't be able to cope with this change. At this stage, we are extending the interfaces that are using vendor channel solely Once the limitation is lifted mlx5 in switchdev mode will be able to have thousands of SFs created by the device. As the only instance of an RDMA device that reports more than 255 ports will be a representor device and it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other ULPs aren't effected by this change and their sysfs/interfaces that are exposes to userspace can remain unchanged. While here cleanup some alignment issues and remove unneeded sanity checks (mainly in rdmavt), Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org Signed-off-by: Mark Bloch <mbloch@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
168 lines
5.4 KiB
C
168 lines
5.4 KiB
C
#ifndef _HFI1_VNIC_H
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#define _HFI1_VNIC_H
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/*
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* Copyright(c) 2017 - 2020 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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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
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from 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
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <rdma/opa_vnic.h>
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#include "hfi.h"
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#include "sdma.h"
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#define HFI1_VNIC_MAX_TXQ 16
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#define HFI1_VNIC_MAX_PAD 12
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/* L4 header definitions */
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#define HFI1_VNIC_L4_HDR_OFFSET OPA_VNIC_L2_HDR_LEN
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#define HFI1_VNIC_GET_L4_HDR(data) \
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(*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET)))
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#define HFI1_VNIC_GET_VESWID(data) \
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(HFI1_VNIC_GET_L4_HDR(data) & 0xFFF)
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/* Service class */
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#define HFI1_VNIC_SC_OFFSET_LOW 6
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#define HFI1_VNIC_SC_OFFSET_HI 7
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#define HFI1_VNIC_SC_SHIFT 4
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#define HFI1_VNIC_MAX_QUEUE 16
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#define HFI1_NUM_VNIC_CTXT 8
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/**
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* struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
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* @dd - device data pointer
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* @sde - sdma engine
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* @vinfo - vnic info pointer
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* @wait - iowait structure
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* @stx - sdma tx request
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* @state - vnic Tx ring SDMA state
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* @q_idx - vnic Tx queue index
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*/
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struct hfi1_vnic_sdma {
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struct hfi1_devdata *dd;
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struct sdma_engine *sde;
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struct hfi1_vnic_vport_info *vinfo;
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struct iowait wait;
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struct sdma_txreq stx;
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unsigned int state;
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u8 q_idx;
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bool pkts_sent;
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};
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/**
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* struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue
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* @idx: queue index
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* @vinfo: pointer to vport information
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* @netdev: network device
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* @napi: netdev napi structure
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* @skbq: queue of received socket buffers
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*/
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struct hfi1_vnic_rx_queue {
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u8 idx;
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struct hfi1_vnic_vport_info *vinfo;
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struct net_device *netdev;
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struct napi_struct napi;
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};
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/**
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* struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information
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* @dd: device data pointer
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* @netdev: net device pointer
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* @flags: state flags
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* @lock: vport lock
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* @num_tx_q: number of transmit queues
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* @num_rx_q: number of receive queues
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* @vesw_id: virtual switch id
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* @rxq: Array of receive queues
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* @stats: per queue stats
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* @sdma: VNIC SDMA structure per TXQ
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*/
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struct hfi1_vnic_vport_info {
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struct hfi1_devdata *dd;
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struct net_device *netdev;
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unsigned long flags;
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/* Lock used around state updates */
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struct mutex lock;
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u8 num_tx_q;
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u8 num_rx_q;
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u16 vesw_id;
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struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT];
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struct opa_vnic_stats stats[HFI1_VNIC_MAX_QUEUE];
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struct hfi1_vnic_sdma sdma[HFI1_VNIC_MAX_TXQ];
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};
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#define v_dbg(format, arg...) \
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netdev_dbg(vinfo->netdev, format, ## arg)
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#define v_err(format, arg...) \
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netdev_err(vinfo->netdev, format, ## arg)
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#define v_info(format, arg...) \
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netdev_info(vinfo->netdev, format, ## arg)
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/* vnic hfi1 internal functions */
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void hfi1_vnic_setup(struct hfi1_devdata *dd);
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int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
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void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
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void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet);
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void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo);
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bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
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u8 q_idx);
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/* vnic rdma netdev operations */
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struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
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u32 port_num,
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enum rdma_netdev_t type,
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const char *name,
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unsigned char name_assign_type,
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void (*setup)(struct net_device *));
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int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
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struct hfi1_vnic_vport_info *vinfo,
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struct sk_buff *skb, u64 pbc, u8 plen);
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#endif /* _HFI1_VNIC_H */
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