1157 lines
24 KiB
C
1157 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*/
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#include <linux/dma-mapping.h>
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#include <net/addrconf.h>
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#include <rdma/uverbs_ioctl.h>
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#include "rxe.h"
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#include "rxe_loc.h"
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#include "rxe_queue.h"
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#include "rxe_hw_counters.h"
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static int rxe_query_device(struct ib_device *dev,
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struct ib_device_attr *attr,
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struct ib_udata *uhw)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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if (uhw->inlen || uhw->outlen)
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return -EINVAL;
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*attr = rxe->attr;
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return 0;
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}
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static int rxe_query_port(struct ib_device *dev,
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u32 port_num, struct ib_port_attr *attr)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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struct rxe_port *port;
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int rc;
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port = &rxe->port;
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/* *attr being zeroed by the caller, avoid zeroing it here */
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*attr = port->attr;
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mutex_lock(&rxe->usdev_lock);
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rc = ib_get_eth_speed(dev, port_num, &attr->active_speed,
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&attr->active_width);
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if (attr->state == IB_PORT_ACTIVE)
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attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
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else if (dev_get_flags(rxe->ndev) & IFF_UP)
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attr->phys_state = IB_PORT_PHYS_STATE_POLLING;
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else
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attr->phys_state = IB_PORT_PHYS_STATE_DISABLED;
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mutex_unlock(&rxe->usdev_lock);
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return rc;
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}
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static int rxe_query_pkey(struct ib_device *device,
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u32 port_num, u16 index, u16 *pkey)
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{
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if (index > 0)
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return -EINVAL;
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*pkey = IB_DEFAULT_PKEY_FULL;
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return 0;
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}
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static int rxe_modify_device(struct ib_device *dev,
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int mask, struct ib_device_modify *attr)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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if (mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID |
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IB_DEVICE_MODIFY_NODE_DESC))
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return -EOPNOTSUPP;
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if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID)
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rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid);
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if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
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memcpy(rxe->ib_dev.node_desc,
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attr->node_desc, sizeof(rxe->ib_dev.node_desc));
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}
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return 0;
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}
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static int rxe_modify_port(struct ib_device *dev,
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u32 port_num, int mask, struct ib_port_modify *attr)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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struct rxe_port *port;
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port = &rxe->port;
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port->attr.port_cap_flags |= attr->set_port_cap_mask;
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port->attr.port_cap_flags &= ~attr->clr_port_cap_mask;
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if (mask & IB_PORT_RESET_QKEY_CNTR)
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port->attr.qkey_viol_cntr = 0;
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return 0;
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}
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static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev,
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u32 port_num)
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{
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return IB_LINK_LAYER_ETHERNET;
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}
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static int rxe_alloc_ucontext(struct ib_ucontext *ibuc, struct ib_udata *udata)
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{
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struct rxe_dev *rxe = to_rdev(ibuc->device);
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struct rxe_ucontext *uc = to_ruc(ibuc);
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return rxe_add_to_pool(&rxe->uc_pool, uc);
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}
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static void rxe_dealloc_ucontext(struct ib_ucontext *ibuc)
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{
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struct rxe_ucontext *uc = to_ruc(ibuc);
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rxe_drop_ref(uc);
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}
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static int rxe_port_immutable(struct ib_device *dev, u32 port_num,
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struct ib_port_immutable *immutable)
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{
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int err;
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struct ib_port_attr attr;
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immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
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err = ib_query_port(dev, port_num, &attr);
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if (err)
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return err;
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immutable->pkey_tbl_len = attr.pkey_tbl_len;
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immutable->gid_tbl_len = attr.gid_tbl_len;
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immutable->max_mad_size = IB_MGMT_MAD_SIZE;
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return 0;
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}
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static int rxe_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
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{
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struct rxe_dev *rxe = to_rdev(ibpd->device);
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struct rxe_pd *pd = to_rpd(ibpd);
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return rxe_add_to_pool(&rxe->pd_pool, pd);
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}
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static int rxe_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
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{
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struct rxe_pd *pd = to_rpd(ibpd);
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rxe_drop_ref(pd);
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return 0;
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}
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static int rxe_create_ah(struct ib_ah *ibah,
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struct rdma_ah_init_attr *init_attr,
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struct ib_udata *udata)
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{
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int err;
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struct rxe_dev *rxe = to_rdev(ibah->device);
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struct rxe_ah *ah = to_rah(ibah);
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err = rxe_av_chk_attr(rxe, init_attr->ah_attr);
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if (err)
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return err;
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err = rxe_add_to_pool(&rxe->ah_pool, ah);
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if (err)
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return err;
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rxe_init_av(init_attr->ah_attr, &ah->av);
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return 0;
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}
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static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
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{
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int err;
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struct rxe_dev *rxe = to_rdev(ibah->device);
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struct rxe_ah *ah = to_rah(ibah);
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err = rxe_av_chk_attr(rxe, attr);
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if (err)
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return err;
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rxe_init_av(attr, &ah->av);
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return 0;
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}
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static int rxe_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
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{
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struct rxe_ah *ah = to_rah(ibah);
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memset(attr, 0, sizeof(*attr));
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attr->type = ibah->type;
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rxe_av_to_attr(&ah->av, attr);
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return 0;
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}
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static int rxe_destroy_ah(struct ib_ah *ibah, u32 flags)
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{
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struct rxe_ah *ah = to_rah(ibah);
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rxe_drop_ref(ah);
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return 0;
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}
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static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr)
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{
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int err;
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int i;
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u32 length;
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struct rxe_recv_wqe *recv_wqe;
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int num_sge = ibwr->num_sge;
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if (unlikely(queue_full(rq->queue))) {
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err = -ENOMEM;
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goto err1;
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}
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if (unlikely(num_sge > rq->max_sge)) {
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err = -EINVAL;
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goto err1;
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}
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length = 0;
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for (i = 0; i < num_sge; i++)
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length += ibwr->sg_list[i].length;
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recv_wqe = producer_addr(rq->queue);
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recv_wqe->wr_id = ibwr->wr_id;
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recv_wqe->num_sge = num_sge;
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memcpy(recv_wqe->dma.sge, ibwr->sg_list,
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num_sge * sizeof(struct ib_sge));
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recv_wqe->dma.length = length;
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recv_wqe->dma.resid = length;
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recv_wqe->dma.num_sge = num_sge;
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recv_wqe->dma.cur_sge = 0;
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recv_wqe->dma.sge_offset = 0;
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advance_producer(rq->queue);
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return 0;
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err1:
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return err;
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}
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static int rxe_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init,
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struct ib_udata *udata)
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{
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int err;
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struct rxe_dev *rxe = to_rdev(ibsrq->device);
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struct rxe_pd *pd = to_rpd(ibsrq->pd);
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struct rxe_srq *srq = to_rsrq(ibsrq);
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struct rxe_create_srq_resp __user *uresp = NULL;
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if (init->srq_type != IB_SRQT_BASIC)
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return -EOPNOTSUPP;
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if (udata) {
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if (udata->outlen < sizeof(*uresp))
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return -EINVAL;
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uresp = udata->outbuf;
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}
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err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK);
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if (err)
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goto err1;
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err = rxe_add_to_pool(&rxe->srq_pool, srq);
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if (err)
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goto err1;
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rxe_add_ref(pd);
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srq->pd = pd;
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err = rxe_srq_from_init(rxe, srq, init, udata, uresp);
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if (err)
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goto err2;
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return 0;
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err2:
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rxe_drop_ref(pd);
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rxe_drop_ref(srq);
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err1:
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return err;
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}
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static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
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enum ib_srq_attr_mask mask,
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struct ib_udata *udata)
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{
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int err;
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struct rxe_srq *srq = to_rsrq(ibsrq);
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struct rxe_dev *rxe = to_rdev(ibsrq->device);
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struct rxe_modify_srq_cmd ucmd = {};
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if (udata) {
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if (udata->inlen < sizeof(ucmd))
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return -EINVAL;
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err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
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if (err)
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return err;
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}
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err = rxe_srq_chk_attr(rxe, srq, attr, mask);
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if (err)
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goto err1;
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err = rxe_srq_from_attr(rxe, srq, attr, mask, &ucmd, udata);
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if (err)
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goto err1;
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return 0;
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err1:
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return err;
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}
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static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
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{
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struct rxe_srq *srq = to_rsrq(ibsrq);
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if (srq->error)
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return -EINVAL;
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attr->max_wr = srq->rq.queue->buf->index_mask;
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attr->max_sge = srq->rq.max_sge;
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attr->srq_limit = srq->limit;
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return 0;
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}
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static int rxe_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata)
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{
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struct rxe_srq *srq = to_rsrq(ibsrq);
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if (srq->rq.queue)
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rxe_queue_cleanup(srq->rq.queue);
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rxe_drop_ref(srq->pd);
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rxe_drop_ref(srq);
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return 0;
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}
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static int rxe_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
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const struct ib_recv_wr **bad_wr)
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{
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int err = 0;
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unsigned long flags;
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struct rxe_srq *srq = to_rsrq(ibsrq);
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spin_lock_irqsave(&srq->rq.producer_lock, flags);
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while (wr) {
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err = post_one_recv(&srq->rq, wr);
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if (unlikely(err))
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break;
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wr = wr->next;
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}
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spin_unlock_irqrestore(&srq->rq.producer_lock, flags);
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if (err)
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*bad_wr = wr;
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return err;
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}
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static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd,
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struct ib_qp_init_attr *init,
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struct ib_udata *udata)
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{
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int err;
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struct rxe_dev *rxe = to_rdev(ibpd->device);
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struct rxe_pd *pd = to_rpd(ibpd);
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struct rxe_qp *qp;
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struct rxe_create_qp_resp __user *uresp = NULL;
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if (udata) {
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if (udata->outlen < sizeof(*uresp))
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return ERR_PTR(-EINVAL);
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uresp = udata->outbuf;
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}
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if (init->create_flags)
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return ERR_PTR(-EOPNOTSUPP);
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err = rxe_qp_chk_init(rxe, init);
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if (err)
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goto err1;
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qp = rxe_alloc(&rxe->qp_pool);
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if (!qp) {
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err = -ENOMEM;
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goto err1;
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}
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if (udata) {
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if (udata->inlen) {
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err = -EINVAL;
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goto err2;
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}
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qp->is_user = 1;
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}
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rxe_add_index(qp);
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err = rxe_qp_from_init(rxe, qp, pd, init, uresp, ibpd, udata);
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if (err)
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goto err3;
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return &qp->ibqp;
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err3:
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rxe_drop_index(qp);
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err2:
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rxe_drop_ref(qp);
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err1:
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return ERR_PTR(err);
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}
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static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
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int mask, struct ib_udata *udata)
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{
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int err;
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struct rxe_dev *rxe = to_rdev(ibqp->device);
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struct rxe_qp *qp = to_rqp(ibqp);
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if (mask & ~IB_QP_ATTR_STANDARD_BITS)
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return -EOPNOTSUPP;
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err = rxe_qp_chk_attr(rxe, qp, attr, mask);
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if (err)
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goto err1;
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err = rxe_qp_from_attr(qp, attr, mask, udata);
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if (err)
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goto err1;
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return 0;
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err1:
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return err;
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}
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static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
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int mask, struct ib_qp_init_attr *init)
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{
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struct rxe_qp *qp = to_rqp(ibqp);
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rxe_qp_to_init(qp, init);
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rxe_qp_to_attr(qp, attr, mask);
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return 0;
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}
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static int rxe_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
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{
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struct rxe_qp *qp = to_rqp(ibqp);
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rxe_qp_destroy(qp);
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rxe_drop_index(qp);
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rxe_drop_ref(qp);
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return 0;
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}
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static int validate_send_wr(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
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unsigned int mask, unsigned int length)
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{
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int num_sge = ibwr->num_sge;
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struct rxe_sq *sq = &qp->sq;
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if (unlikely(num_sge > sq->max_sge))
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goto err1;
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if (unlikely(mask & WR_ATOMIC_MASK)) {
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if (length < 8)
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goto err1;
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if (atomic_wr(ibwr)->remote_addr & 0x7)
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goto err1;
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}
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if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
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(length > sq->max_inline)))
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goto err1;
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return 0;
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err1:
|
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return -EINVAL;
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}
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|
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static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
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const struct ib_send_wr *ibwr)
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{
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wr->wr_id = ibwr->wr_id;
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wr->num_sge = ibwr->num_sge;
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wr->opcode = ibwr->opcode;
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wr->send_flags = ibwr->send_flags;
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if (qp_type(qp) == IB_QPT_UD ||
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qp_type(qp) == IB_QPT_SMI ||
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qp_type(qp) == IB_QPT_GSI) {
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wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn;
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wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey;
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if (qp_type(qp) == IB_QPT_GSI)
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wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index;
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if (wr->opcode == IB_WR_SEND_WITH_IMM)
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wr->ex.imm_data = ibwr->ex.imm_data;
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} else {
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switch (wr->opcode) {
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case IB_WR_RDMA_WRITE_WITH_IMM:
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wr->ex.imm_data = ibwr->ex.imm_data;
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fallthrough;
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case IB_WR_RDMA_READ:
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case IB_WR_RDMA_WRITE:
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wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr;
|
|
wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey;
|
|
break;
|
|
case IB_WR_SEND_WITH_IMM:
|
|
wr->ex.imm_data = ibwr->ex.imm_data;
|
|
break;
|
|
case IB_WR_SEND_WITH_INV:
|
|
wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
|
|
break;
|
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
wr->wr.atomic.remote_addr =
|
|
atomic_wr(ibwr)->remote_addr;
|
|
wr->wr.atomic.compare_add =
|
|
atomic_wr(ibwr)->compare_add;
|
|
wr->wr.atomic.swap = atomic_wr(ibwr)->swap;
|
|
wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey;
|
|
break;
|
|
case IB_WR_LOCAL_INV:
|
|
wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey;
|
|
break;
|
|
case IB_WR_REG_MR:
|
|
wr->wr.reg.mr = reg_wr(ibwr)->mr;
|
|
wr->wr.reg.key = reg_wr(ibwr)->key;
|
|
wr->wr.reg.access = reg_wr(ibwr)->access;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void copy_inline_data_to_wqe(struct rxe_send_wqe *wqe,
|
|
const struct ib_send_wr *ibwr)
|
|
{
|
|
struct ib_sge *sge = ibwr->sg_list;
|
|
u8 *p = wqe->dma.inline_data;
|
|
int i;
|
|
|
|
for (i = 0; i < ibwr->num_sge; i++, sge++) {
|
|
memcpy(p, (void *)(uintptr_t)sge->addr, sge->length);
|
|
p += sge->length;
|
|
}
|
|
}
|
|
|
|
static void init_send_wqe(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
|
|
unsigned int mask, unsigned int length,
|
|
struct rxe_send_wqe *wqe)
|
|
{
|
|
int num_sge = ibwr->num_sge;
|
|
|
|
init_send_wr(qp, &wqe->wr, ibwr);
|
|
|
|
/* local operation */
|
|
if (unlikely(mask & WR_REG_MASK)) {
|
|
wqe->mask = mask;
|
|
wqe->state = wqe_state_posted;
|
|
return;
|
|
}
|
|
|
|
if (qp_type(qp) == IB_QPT_UD ||
|
|
qp_type(qp) == IB_QPT_SMI ||
|
|
qp_type(qp) == IB_QPT_GSI)
|
|
memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av));
|
|
|
|
if (unlikely(ibwr->send_flags & IB_SEND_INLINE))
|
|
copy_inline_data_to_wqe(wqe, ibwr);
|
|
else
|
|
memcpy(wqe->dma.sge, ibwr->sg_list,
|
|
num_sge * sizeof(struct ib_sge));
|
|
|
|
wqe->iova = mask & WR_ATOMIC_MASK ? atomic_wr(ibwr)->remote_addr :
|
|
mask & WR_READ_OR_WRITE_MASK ? rdma_wr(ibwr)->remote_addr : 0;
|
|
wqe->mask = mask;
|
|
wqe->dma.length = length;
|
|
wqe->dma.resid = length;
|
|
wqe->dma.num_sge = num_sge;
|
|
wqe->dma.cur_sge = 0;
|
|
wqe->dma.sge_offset = 0;
|
|
wqe->state = wqe_state_posted;
|
|
wqe->ssn = atomic_add_return(1, &qp->ssn);
|
|
}
|
|
|
|
static int post_one_send(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
|
|
unsigned int mask, u32 length)
|
|
{
|
|
int err;
|
|
struct rxe_sq *sq = &qp->sq;
|
|
struct rxe_send_wqe *send_wqe;
|
|
unsigned long flags;
|
|
|
|
err = validate_send_wr(qp, ibwr, mask, length);
|
|
if (err)
|
|
return err;
|
|
|
|
spin_lock_irqsave(&qp->sq.sq_lock, flags);
|
|
|
|
if (unlikely(queue_full(sq->queue))) {
|
|
err = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
send_wqe = producer_addr(sq->queue);
|
|
init_send_wqe(qp, ibwr, mask, length, send_wqe);
|
|
|
|
advance_producer(sq->queue);
|
|
spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
|
|
return err;
|
|
}
|
|
|
|
static int rxe_post_send_kernel(struct rxe_qp *qp, const struct ib_send_wr *wr,
|
|
const struct ib_send_wr **bad_wr)
|
|
{
|
|
int err = 0;
|
|
unsigned int mask;
|
|
unsigned int length = 0;
|
|
int i;
|
|
struct ib_send_wr *next;
|
|
|
|
while (wr) {
|
|
mask = wr_opcode_mask(wr->opcode, qp);
|
|
if (unlikely(!mask)) {
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
|
|
if (unlikely((wr->send_flags & IB_SEND_INLINE) &&
|
|
!(mask & WR_INLINE_MASK))) {
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
|
|
next = wr->next;
|
|
|
|
length = 0;
|
|
for (i = 0; i < wr->num_sge; i++)
|
|
length += wr->sg_list[i].length;
|
|
|
|
err = post_one_send(qp, wr, mask, length);
|
|
|
|
if (err) {
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
wr = next;
|
|
}
|
|
|
|
rxe_run_task(&qp->req.task, 1);
|
|
if (unlikely(qp->req.state == QP_STATE_ERROR))
|
|
rxe_run_task(&qp->comp.task, 1);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int rxe_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
|
|
const struct ib_send_wr **bad_wr)
|
|
{
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
|
|
if (unlikely(!qp->valid)) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(qp->req.state < QP_STATE_READY)) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (qp->is_user) {
|
|
/* Utilize process context to do protocol processing */
|
|
rxe_run_task(&qp->req.task, 0);
|
|
return 0;
|
|
} else
|
|
return rxe_post_send_kernel(qp, wr, bad_wr);
|
|
}
|
|
|
|
static int rxe_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
|
|
const struct ib_recv_wr **bad_wr)
|
|
{
|
|
int err = 0;
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
struct rxe_rq *rq = &qp->rq;
|
|
unsigned long flags;
|
|
|
|
if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
|
|
*bad_wr = wr;
|
|
err = -EINVAL;
|
|
goto err1;
|
|
}
|
|
|
|
if (unlikely(qp->srq)) {
|
|
*bad_wr = wr;
|
|
err = -EINVAL;
|
|
goto err1;
|
|
}
|
|
|
|
spin_lock_irqsave(&rq->producer_lock, flags);
|
|
|
|
while (wr) {
|
|
err = post_one_recv(rq, wr);
|
|
if (unlikely(err)) {
|
|
*bad_wr = wr;
|
|
break;
|
|
}
|
|
wr = wr->next;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&rq->producer_lock, flags);
|
|
|
|
if (qp->resp.state == QP_STATE_ERROR)
|
|
rxe_run_task(&qp->resp.task, 1);
|
|
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
static int rxe_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
|
|
struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct ib_device *dev = ibcq->device;
|
|
struct rxe_dev *rxe = to_rdev(dev);
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
struct rxe_create_cq_resp __user *uresp = NULL;
|
|
|
|
if (udata) {
|
|
if (udata->outlen < sizeof(*uresp))
|
|
return -EINVAL;
|
|
uresp = udata->outbuf;
|
|
}
|
|
|
|
if (attr->flags)
|
|
return -EOPNOTSUPP;
|
|
|
|
err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector, udata,
|
|
uresp);
|
|
if (err)
|
|
return err;
|
|
|
|
return rxe_add_to_pool(&rxe->cq_pool, cq);
|
|
}
|
|
|
|
static int rxe_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
|
|
{
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
|
|
rxe_cq_disable(cq);
|
|
|
|
rxe_drop_ref(cq);
|
|
return 0;
|
|
}
|
|
|
|
static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
struct rxe_dev *rxe = to_rdev(ibcq->device);
|
|
struct rxe_resize_cq_resp __user *uresp = NULL;
|
|
|
|
if (udata) {
|
|
if (udata->outlen < sizeof(*uresp))
|
|
return -EINVAL;
|
|
uresp = udata->outbuf;
|
|
}
|
|
|
|
err = rxe_cq_chk_attr(rxe, cq, cqe, 0);
|
|
if (err)
|
|
goto err1;
|
|
|
|
err = rxe_cq_resize_queue(cq, cqe, uresp, udata);
|
|
if (err)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
|
|
{
|
|
int i;
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
struct rxe_cqe *cqe;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&cq->cq_lock, flags);
|
|
for (i = 0; i < num_entries; i++) {
|
|
cqe = queue_head(cq->queue);
|
|
if (!cqe)
|
|
break;
|
|
|
|
memcpy(wc++, &cqe->ibwc, sizeof(*wc));
|
|
advance_consumer(cq->queue);
|
|
}
|
|
spin_unlock_irqrestore(&cq->cq_lock, flags);
|
|
|
|
return i;
|
|
}
|
|
|
|
static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt)
|
|
{
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
int count = queue_count(cq->queue);
|
|
|
|
return (count > wc_cnt) ? wc_cnt : count;
|
|
}
|
|
|
|
static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
|
|
{
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
unsigned long irq_flags;
|
|
int ret = 0;
|
|
|
|
spin_lock_irqsave(&cq->cq_lock, irq_flags);
|
|
if (cq->notify != IB_CQ_NEXT_COMP)
|
|
cq->notify = flags & IB_CQ_SOLICITED_MASK;
|
|
|
|
if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !queue_empty(cq->queue))
|
|
ret = 1;
|
|
|
|
spin_unlock_irqrestore(&cq->cq_lock, irq_flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access)
|
|
{
|
|
struct rxe_dev *rxe = to_rdev(ibpd->device);
|
|
struct rxe_pd *pd = to_rpd(ibpd);
|
|
struct rxe_mr *mr;
|
|
|
|
mr = rxe_alloc(&rxe->mr_pool);
|
|
if (!mr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
rxe_add_index(mr);
|
|
rxe_add_ref(pd);
|
|
rxe_mr_init_dma(pd, access, mr);
|
|
|
|
return &mr->ibmr;
|
|
}
|
|
|
|
static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd,
|
|
u64 start,
|
|
u64 length,
|
|
u64 iova,
|
|
int access, struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_dev *rxe = to_rdev(ibpd->device);
|
|
struct rxe_pd *pd = to_rpd(ibpd);
|
|
struct rxe_mr *mr;
|
|
|
|
mr = rxe_alloc(&rxe->mr_pool);
|
|
if (!mr) {
|
|
err = -ENOMEM;
|
|
goto err2;
|
|
}
|
|
|
|
rxe_add_index(mr);
|
|
|
|
rxe_add_ref(pd);
|
|
|
|
err = rxe_mr_init_user(pd, start, length, iova, access, udata, mr);
|
|
if (err)
|
|
goto err3;
|
|
|
|
return &mr->ibmr;
|
|
|
|
err3:
|
|
rxe_drop_ref(pd);
|
|
rxe_drop_index(mr);
|
|
rxe_drop_ref(mr);
|
|
err2:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static int rxe_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
|
|
{
|
|
struct rxe_mr *mr = to_rmr(ibmr);
|
|
|
|
mr->state = RXE_MR_STATE_ZOMBIE;
|
|
rxe_drop_ref(mr_pd(mr));
|
|
rxe_drop_index(mr);
|
|
rxe_drop_ref(mr);
|
|
return 0;
|
|
}
|
|
|
|
static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type,
|
|
u32 max_num_sg)
|
|
{
|
|
struct rxe_dev *rxe = to_rdev(ibpd->device);
|
|
struct rxe_pd *pd = to_rpd(ibpd);
|
|
struct rxe_mr *mr;
|
|
int err;
|
|
|
|
if (mr_type != IB_MR_TYPE_MEM_REG)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
mr = rxe_alloc(&rxe->mr_pool);
|
|
if (!mr) {
|
|
err = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
rxe_add_index(mr);
|
|
|
|
rxe_add_ref(pd);
|
|
|
|
err = rxe_mr_init_fast(pd, max_num_sg, mr);
|
|
if (err)
|
|
goto err2;
|
|
|
|
return &mr->ibmr;
|
|
|
|
err2:
|
|
rxe_drop_ref(pd);
|
|
rxe_drop_index(mr);
|
|
rxe_drop_ref(mr);
|
|
err1:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static int rxe_set_page(struct ib_mr *ibmr, u64 addr)
|
|
{
|
|
struct rxe_mr *mr = to_rmr(ibmr);
|
|
struct rxe_map *map;
|
|
struct rxe_phys_buf *buf;
|
|
|
|
if (unlikely(mr->nbuf == mr->num_buf))
|
|
return -ENOMEM;
|
|
|
|
map = mr->map[mr->nbuf / RXE_BUF_PER_MAP];
|
|
buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP];
|
|
|
|
buf->addr = addr;
|
|
buf->size = ibmr->page_size;
|
|
mr->nbuf++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
|
|
int sg_nents, unsigned int *sg_offset)
|
|
{
|
|
struct rxe_mr *mr = to_rmr(ibmr);
|
|
int n;
|
|
|
|
mr->nbuf = 0;
|
|
|
|
n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page);
|
|
|
|
mr->va = ibmr->iova;
|
|
mr->iova = ibmr->iova;
|
|
mr->length = ibmr->length;
|
|
mr->page_shift = ilog2(ibmr->page_size);
|
|
mr->page_mask = ibmr->page_size - 1;
|
|
mr->offset = mr->iova & mr->page_mask;
|
|
|
|
return n;
|
|
}
|
|
|
|
static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
|
|
{
|
|
int err;
|
|
struct rxe_dev *rxe = to_rdev(ibqp->device);
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
struct rxe_mc_grp *grp;
|
|
|
|
/* takes a ref on grp if successful */
|
|
err = rxe_mcast_get_grp(rxe, mgid, &grp);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rxe_mcast_add_grp_elem(rxe, qp, grp);
|
|
|
|
rxe_drop_ref(grp);
|
|
return err;
|
|
}
|
|
|
|
static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
|
|
{
|
|
struct rxe_dev *rxe = to_rdev(ibqp->device);
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
|
|
return rxe_mcast_drop_grp_elem(rxe, qp, mgid);
|
|
}
|
|
|
|
static ssize_t parent_show(struct device *device,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct rxe_dev *rxe =
|
|
rdma_device_to_drv_device(device, struct rxe_dev, ib_dev);
|
|
|
|
return sysfs_emit(buf, "%s\n", rxe_parent_name(rxe, 1));
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(parent);
|
|
|
|
static struct attribute *rxe_dev_attributes[] = {
|
|
&dev_attr_parent.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group rxe_attr_group = {
|
|
.attrs = rxe_dev_attributes,
|
|
};
|
|
|
|
static int rxe_enable_driver(struct ib_device *ib_dev)
|
|
{
|
|
struct rxe_dev *rxe = container_of(ib_dev, struct rxe_dev, ib_dev);
|
|
|
|
rxe_set_port_state(rxe);
|
|
dev_info(&rxe->ib_dev.dev, "added %s\n", netdev_name(rxe->ndev));
|
|
return 0;
|
|
}
|
|
|
|
static const struct ib_device_ops rxe_dev_ops = {
|
|
.owner = THIS_MODULE,
|
|
.driver_id = RDMA_DRIVER_RXE,
|
|
.uverbs_abi_ver = RXE_UVERBS_ABI_VERSION,
|
|
|
|
.alloc_hw_stats = rxe_ib_alloc_hw_stats,
|
|
.alloc_mr = rxe_alloc_mr,
|
|
.alloc_pd = rxe_alloc_pd,
|
|
.alloc_ucontext = rxe_alloc_ucontext,
|
|
.attach_mcast = rxe_attach_mcast,
|
|
.create_ah = rxe_create_ah,
|
|
.create_cq = rxe_create_cq,
|
|
.create_qp = rxe_create_qp,
|
|
.create_srq = rxe_create_srq,
|
|
.create_user_ah = rxe_create_ah,
|
|
.dealloc_driver = rxe_dealloc,
|
|
.dealloc_pd = rxe_dealloc_pd,
|
|
.dealloc_ucontext = rxe_dealloc_ucontext,
|
|
.dereg_mr = rxe_dereg_mr,
|
|
.destroy_ah = rxe_destroy_ah,
|
|
.destroy_cq = rxe_destroy_cq,
|
|
.destroy_qp = rxe_destroy_qp,
|
|
.destroy_srq = rxe_destroy_srq,
|
|
.detach_mcast = rxe_detach_mcast,
|
|
.enable_driver = rxe_enable_driver,
|
|
.get_dma_mr = rxe_get_dma_mr,
|
|
.get_hw_stats = rxe_ib_get_hw_stats,
|
|
.get_link_layer = rxe_get_link_layer,
|
|
.get_port_immutable = rxe_port_immutable,
|
|
.map_mr_sg = rxe_map_mr_sg,
|
|
.mmap = rxe_mmap,
|
|
.modify_ah = rxe_modify_ah,
|
|
.modify_device = rxe_modify_device,
|
|
.modify_port = rxe_modify_port,
|
|
.modify_qp = rxe_modify_qp,
|
|
.modify_srq = rxe_modify_srq,
|
|
.peek_cq = rxe_peek_cq,
|
|
.poll_cq = rxe_poll_cq,
|
|
.post_recv = rxe_post_recv,
|
|
.post_send = rxe_post_send,
|
|
.post_srq_recv = rxe_post_srq_recv,
|
|
.query_ah = rxe_query_ah,
|
|
.query_device = rxe_query_device,
|
|
.query_pkey = rxe_query_pkey,
|
|
.query_port = rxe_query_port,
|
|
.query_qp = rxe_query_qp,
|
|
.query_srq = rxe_query_srq,
|
|
.reg_user_mr = rxe_reg_user_mr,
|
|
.req_notify_cq = rxe_req_notify_cq,
|
|
.resize_cq = rxe_resize_cq,
|
|
|
|
INIT_RDMA_OBJ_SIZE(ib_ah, rxe_ah, ibah),
|
|
INIT_RDMA_OBJ_SIZE(ib_cq, rxe_cq, ibcq),
|
|
INIT_RDMA_OBJ_SIZE(ib_pd, rxe_pd, ibpd),
|
|
INIT_RDMA_OBJ_SIZE(ib_srq, rxe_srq, ibsrq),
|
|
INIT_RDMA_OBJ_SIZE(ib_ucontext, rxe_ucontext, ibuc),
|
|
INIT_RDMA_OBJ_SIZE(ib_mw, rxe_mw, ibmw),
|
|
};
|
|
|
|
int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name)
|
|
{
|
|
int err;
|
|
struct ib_device *dev = &rxe->ib_dev;
|
|
struct crypto_shash *tfm;
|
|
|
|
strscpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
|
|
|
|
dev->node_type = RDMA_NODE_IB_CA;
|
|
dev->phys_port_cnt = 1;
|
|
dev->num_comp_vectors = num_possible_cpus();
|
|
dev->local_dma_lkey = 0;
|
|
addrconf_addr_eui48((unsigned char *)&dev->node_guid,
|
|
rxe->ndev->dev_addr);
|
|
|
|
dev->uverbs_cmd_mask |= BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) |
|
|
BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ);
|
|
|
|
ib_set_device_ops(dev, &rxe_dev_ops);
|
|
err = ib_device_set_netdev(&rxe->ib_dev, rxe->ndev, 1);
|
|
if (err)
|
|
return err;
|
|
|
|
tfm = crypto_alloc_shash("crc32", 0, 0);
|
|
if (IS_ERR(tfm)) {
|
|
pr_err("failed to allocate crc algorithm err:%ld\n",
|
|
PTR_ERR(tfm));
|
|
return PTR_ERR(tfm);
|
|
}
|
|
rxe->tfm = tfm;
|
|
|
|
rdma_set_device_sysfs_group(dev, &rxe_attr_group);
|
|
err = ib_register_device(dev, ibdev_name, NULL);
|
|
if (err)
|
|
pr_warn("%s failed with error %d\n", __func__, err);
|
|
|
|
/*
|
|
* Note that rxe may be invalid at this point if another thread
|
|
* unregistered it.
|
|
*/
|
|
return err;
|
|
}
|