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![Moni Shoua](/assets/img/avatar_default.png)
Soft RoCE (RXE) - The software RoCE driver ib_rxe implements the RDMA transport and registers to the RDMA core device as a kernel verbs provider. It also implements the packet IO layer. On the other hand ib_rxe registers to the Linux netdev stack as a udp encapsulating protocol, in that case RDMA, for sending and receiving packets over any Ethernet device. This yields a RDMA transport over the UDP/Ethernet network layer forming a RoCEv2 compatible device. The configuration procedure of the Soft RoCE drivers requires binding to any existing Ethernet network device. This is done with /sys interface. A userspace Soft RoCE library (librxe) provides user applications the ability to run with Soft RoCE devices. The use of rxe verbs ins user space requires the inclusion of librxe as a device specifics plug-in to libibverbs. librxe is packaged separately. Architecture: +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ +---------------------------------------------------------------+ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Soft RoCE resources: [1[ https://github.com/SoftRoCE/librxe-dev librxe - source code in Github [2] https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home - Soft RoCE Wiki page [3] https://github.com/SoftRoCE/librxe-dev - Soft RoCE userspace library Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
1330 lines
28 KiB
C
1330 lines
28 KiB
C
/*
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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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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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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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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 void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed,
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u8 *active_width)
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{
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if (speed <= 1000) {
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*active_width = IB_WIDTH_1X;
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*active_speed = IB_SPEED_SDR;
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} else if (speed <= 10000) {
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*active_width = IB_WIDTH_1X;
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*active_speed = IB_SPEED_FDR10;
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} else if (speed <= 20000) {
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*active_width = IB_WIDTH_4X;
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*active_speed = IB_SPEED_DDR;
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} else if (speed <= 30000) {
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*active_width = IB_WIDTH_4X;
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*active_speed = IB_SPEED_QDR;
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} else if (speed <= 40000) {
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*active_width = IB_WIDTH_4X;
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*active_speed = IB_SPEED_FDR10;
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} else {
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*active_width = IB_WIDTH_4X;
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*active_speed = IB_SPEED_EDR;
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}
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}
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static int rxe_query_port(struct ib_device *dev,
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u8 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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u32 speed;
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if (unlikely(port_num != 1)) {
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pr_warn("invalid port_number %d\n", port_num);
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goto err1;
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}
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port = &rxe->port;
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*attr = port->attr;
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mutex_lock(&rxe->usdev_lock);
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if (rxe->ndev->ethtool_ops->get_link_ksettings) {
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struct ethtool_link_ksettings ks;
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rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks);
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speed = ks.base.speed;
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} else if (rxe->ndev->ethtool_ops->get_settings) {
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struct ethtool_cmd cmd;
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rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd);
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speed = cmd.speed;
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} else {
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pr_warn("%s speed is unknown, defaulting to 1000\n", rxe->ndev->name);
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speed = 1000;
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}
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rxe_eth_speed_to_ib_speed(speed, &attr->active_speed, &attr->active_width);
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mutex_unlock(&rxe->usdev_lock);
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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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static int rxe_query_gid(struct ib_device *device,
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u8 port_num, int index, union ib_gid *gid)
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{
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int ret;
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if (index > RXE_PORT_GID_TBL_LEN)
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return -EINVAL;
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ret = ib_get_cached_gid(device, port_num, index, gid, NULL);
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if (ret == -EAGAIN) {
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memcpy(gid, &zgid, sizeof(*gid));
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return 0;
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}
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return ret;
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}
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static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int
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index, const union ib_gid *gid,
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const struct ib_gid_attr *attr, void **context)
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{
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if (index >= RXE_PORT_GID_TBL_LEN)
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return -EINVAL;
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return 0;
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}
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static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int
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index, void **context)
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{
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if (index >= RXE_PORT_GID_TBL_LEN)
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return -EINVAL;
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return 0;
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}
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static struct net_device *rxe_get_netdev(struct ib_device *device,
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u8 port_num)
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{
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struct rxe_dev *rxe = to_rdev(device);
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if (rxe->ndev) {
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dev_hold(rxe->ndev);
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return rxe->ndev;
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}
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return NULL;
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}
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static int rxe_query_pkey(struct ib_device *device,
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u8 port_num, u16 index, u16 *pkey)
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{
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struct rxe_dev *rxe = to_rdev(device);
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struct rxe_port *port;
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if (unlikely(port_num != 1)) {
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dev_warn(device->dma_device, "invalid port_num = %d\n",
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port_num);
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goto err1;
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}
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port = &rxe->port;
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if (unlikely(index >= port->attr.pkey_tbl_len)) {
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dev_warn(device->dma_device, "invalid index = %d\n",
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index);
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goto err1;
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}
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*pkey = port->pkey_tbl[index];
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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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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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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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u8 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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if (unlikely(port_num != 1)) {
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pr_warn("invalid port_num = %d\n", port_num);
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goto err1;
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}
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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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err1:
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return -EINVAL;
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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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u8 port_num)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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return rxe->ifc_ops->link_layer(rxe, port_num);
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}
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static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev,
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struct ib_udata *udata)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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struct rxe_ucontext *uc;
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uc = rxe_alloc(&rxe->uc_pool);
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return uc ? &uc->ibuc : ERR_PTR(-ENOMEM);
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}
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static int 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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return 0;
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}
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static int rxe_port_immutable(struct ib_device *dev, u8 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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err = rxe_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->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
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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 struct ib_pd *rxe_alloc_pd(struct ib_device *dev,
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struct ib_ucontext *context,
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struct ib_udata *udata)
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{
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struct rxe_dev *rxe = to_rdev(dev);
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struct rxe_pd *pd;
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pd = rxe_alloc(&rxe->pd_pool);
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return pd ? &pd->ibpd : ERR_PTR(-ENOMEM);
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}
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static int rxe_dealloc_pd(struct ib_pd *ibpd)
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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_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr,
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struct rxe_av *av)
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{
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int err;
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union ib_gid sgid;
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struct ib_gid_attr sgid_attr;
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err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num,
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attr->grh.sgid_index, &sgid,
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&sgid_attr);
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if (err) {
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pr_err("Failed to query sgid. err = %d\n", err);
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return err;
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}
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err = rxe_av_from_attr(rxe, attr->port_num, av, attr);
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if (!err)
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err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
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if (sgid_attr.ndev)
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dev_put(sgid_attr.ndev);
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return err;
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}
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static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
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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_ah *ah;
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err = rxe_av_chk_attr(rxe, attr);
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if (err)
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goto err1;
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ah = rxe_alloc(&rxe->ah_pool);
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if (!ah) {
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err = -ENOMEM;
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goto err1;
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}
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rxe_add_ref(pd);
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ah->pd = pd;
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err = rxe_init_av(rxe, attr, &ah->av);
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if (err)
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goto err2;
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return &ah->ibah;
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err2:
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rxe_drop_ref(pd);
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rxe_drop_ref(ah);
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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_ah(struct ib_ah *ibah, struct ib_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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err = rxe_init_av(rxe, attr, &ah->av);
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if (err)
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return err;
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return 0;
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}
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static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
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{
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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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rxe_av_to_attr(rxe, &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)
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{
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struct rxe_ah *ah = to_rah(ibah);
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rxe_drop_ref(ah->pd);
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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, 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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/* make sure all changes to the work queue are written before we
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* update the producer pointer
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*/
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smp_wmb();
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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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|
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static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
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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(ibpd->device);
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struct rxe_pd *pd = to_rpd(ibpd);
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struct rxe_srq *srq;
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struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
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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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srq = rxe_alloc(&rxe->srq_pool);
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|
if (!srq) {
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err = -ENOMEM;
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goto err1;
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}
|
|
|
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rxe_add_index(srq);
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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, context, udata);
|
|
if (err)
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goto err2;
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|
|
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return &srq->ibsrq;
|
|
|
|
err2:
|
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rxe_drop_ref(pd);
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rxe_drop_index(srq);
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rxe_drop_ref(srq);
|
|
err1:
|
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return ERR_PTR(err);
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|
}
|
|
|
|
static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
|
|
enum ib_srq_attr_mask mask,
|
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struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_srq *srq = to_rsrq(ibsrq);
|
|
struct rxe_dev *rxe = to_rdev(ibsrq->device);
|
|
|
|
err = rxe_srq_chk_attr(rxe, srq, attr, mask);
|
|
if (err)
|
|
goto err1;
|
|
|
|
err = rxe_srq_from_attr(rxe, srq, attr, mask, udata);
|
|
if (err)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
|
|
{
|
|
struct rxe_srq *srq = to_rsrq(ibsrq);
|
|
|
|
if (srq->error)
|
|
return -EINVAL;
|
|
|
|
attr->max_wr = srq->rq.queue->buf->index_mask;
|
|
attr->max_sge = srq->rq.max_sge;
|
|
attr->srq_limit = srq->limit;
|
|
return 0;
|
|
}
|
|
|
|
static int rxe_destroy_srq(struct ib_srq *ibsrq)
|
|
{
|
|
struct rxe_srq *srq = to_rsrq(ibsrq);
|
|
|
|
if (srq->rq.queue)
|
|
rxe_queue_cleanup(srq->rq.queue);
|
|
|
|
rxe_drop_ref(srq->pd);
|
|
rxe_drop_index(srq);
|
|
rxe_drop_ref(srq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
int err = 0;
|
|
unsigned long flags;
|
|
struct rxe_srq *srq = to_rsrq(ibsrq);
|
|
|
|
spin_lock_irqsave(&srq->rq.producer_lock, flags);
|
|
|
|
while (wr) {
|
|
err = post_one_recv(&srq->rq, wr);
|
|
if (unlikely(err))
|
|
break;
|
|
wr = wr->next;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&srq->rq.producer_lock, flags);
|
|
|
|
if (err)
|
|
*bad_wr = wr;
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd,
|
|
struct ib_qp_init_attr *init,
|
|
struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_dev *rxe = to_rdev(ibpd->device);
|
|
struct rxe_pd *pd = to_rpd(ibpd);
|
|
struct rxe_qp *qp;
|
|
|
|
err = rxe_qp_chk_init(rxe, init);
|
|
if (err)
|
|
goto err1;
|
|
|
|
qp = rxe_alloc(&rxe->qp_pool);
|
|
if (!qp) {
|
|
err = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
if (udata) {
|
|
if (udata->inlen) {
|
|
err = -EINVAL;
|
|
goto err1;
|
|
}
|
|
qp->is_user = 1;
|
|
}
|
|
|
|
rxe_add_index(qp);
|
|
|
|
err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd);
|
|
if (err)
|
|
goto err2;
|
|
|
|
return &qp->ibqp;
|
|
|
|
err2:
|
|
rxe_drop_index(qp);
|
|
rxe_drop_ref(qp);
|
|
err1:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int mask, struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_dev *rxe = to_rdev(ibqp->device);
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
|
|
err = rxe_qp_chk_attr(rxe, qp, attr, mask);
|
|
if (err)
|
|
goto err1;
|
|
|
|
err = rxe_qp_from_attr(qp, attr, mask, udata);
|
|
if (err)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int mask, struct ib_qp_init_attr *init)
|
|
{
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
|
|
rxe_qp_to_init(qp, init);
|
|
rxe_qp_to_attr(qp, attr, mask);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rxe_destroy_qp(struct ib_qp *ibqp)
|
|
{
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
|
|
rxe_qp_destroy(qp);
|
|
rxe_drop_index(qp);
|
|
rxe_drop_ref(qp);
|
|
return 0;
|
|
}
|
|
|
|
static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr,
|
|
unsigned int mask, unsigned int length)
|
|
{
|
|
int num_sge = ibwr->num_sge;
|
|
struct rxe_sq *sq = &qp->sq;
|
|
|
|
if (unlikely(num_sge > sq->max_sge))
|
|
goto err1;
|
|
|
|
if (unlikely(mask & WR_ATOMIC_MASK)) {
|
|
if (length < 8)
|
|
goto err1;
|
|
|
|
if (atomic_wr(ibwr)->remote_addr & 0x7)
|
|
goto err1;
|
|
}
|
|
|
|
if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
|
|
(length > sq->max_inline)))
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
|
|
struct ib_send_wr *ibwr)
|
|
{
|
|
wr->wr_id = ibwr->wr_id;
|
|
wr->num_sge = ibwr->num_sge;
|
|
wr->opcode = ibwr->opcode;
|
|
wr->send_flags = ibwr->send_flags;
|
|
|
|
if (qp_type(qp) == IB_QPT_UD ||
|
|
qp_type(qp) == IB_QPT_SMI ||
|
|
qp_type(qp) == IB_QPT_GSI) {
|
|
wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn;
|
|
wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey;
|
|
if (qp_type(qp) == IB_QPT_GSI)
|
|
wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index;
|
|
if (wr->opcode == IB_WR_SEND_WITH_IMM)
|
|
wr->ex.imm_data = ibwr->ex.imm_data;
|
|
} else {
|
|
switch (wr->opcode) {
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
wr->ex.imm_data = ibwr->ex.imm_data;
|
|
case IB_WR_RDMA_READ:
|
|
case IB_WR_RDMA_WRITE:
|
|
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 int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr,
|
|
unsigned int mask, unsigned int length,
|
|
struct rxe_send_wqe *wqe)
|
|
{
|
|
int num_sge = ibwr->num_sge;
|
|
struct ib_sge *sge;
|
|
int i;
|
|
u8 *p;
|
|
|
|
init_send_wr(qp, &wqe->wr, ibwr);
|
|
|
|
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)) {
|
|
p = wqe->dma.inline_data;
|
|
|
|
sge = ibwr->sg_list;
|
|
for (i = 0; i < num_sge; i++, sge++) {
|
|
if (qp->is_user && copy_from_user(p, (__user void *)
|
|
(uintptr_t)sge->addr, sge->length))
|
|
return -EFAULT;
|
|
|
|
else if (!qp->is_user)
|
|
memcpy(p, (void *)(uintptr_t)sge->addr,
|
|
sge->length);
|
|
|
|
p += sge->length;
|
|
}
|
|
} else if (mask & WR_REG_MASK) {
|
|
wqe->mask = mask;
|
|
wqe->state = wqe_state_posted;
|
|
return 0;
|
|
} 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 :
|
|
rdma_wr(ibwr)->remote_addr;
|
|
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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr,
|
|
unsigned 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);
|
|
|
|
err = init_send_wqe(qp, ibwr, mask, length, send_wqe);
|
|
if (unlikely(err))
|
|
goto err1;
|
|
|
|
/*
|
|
* make sure all changes to the work queue are
|
|
* written before we update the producer pointer
|
|
*/
|
|
smp_wmb();
|
|
|
|
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(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
int err = 0;
|
|
struct rxe_qp *qp = to_rqp(ibqp);
|
|
unsigned int mask;
|
|
unsigned int length = 0;
|
|
int i;
|
|
int must_sched;
|
|
|
|
if (unlikely(!qp->valid)) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(qp->req.state < QP_STATE_READY)) {
|
|
*bad_wr = wr;
|
|
return -EINVAL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 = wr->next;
|
|
}
|
|
|
|
/*
|
|
* Must sched in case of GSI QP because ib_send_mad() hold irq lock,
|
|
* and the requester call ip_local_out_sk() that takes spin_lock_bh.
|
|
*/
|
|
must_sched = (qp_type(qp) == IB_QPT_GSI) ||
|
|
(queue_count(qp->sq.queue) > 1);
|
|
|
|
rxe_run_task(&qp->req.task, must_sched);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
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);
|
|
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
static struct ib_cq *rxe_create_cq(struct ib_device *dev,
|
|
const struct ib_cq_init_attr *attr,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct rxe_dev *rxe = to_rdev(dev);
|
|
struct rxe_cq *cq;
|
|
|
|
if (attr->flags)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata);
|
|
if (err)
|
|
goto err1;
|
|
|
|
cq = rxe_alloc(&rxe->cq_pool);
|
|
if (!cq) {
|
|
err = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector,
|
|
context, udata);
|
|
if (err)
|
|
goto err2;
|
|
|
|
return &cq->ibcq;
|
|
|
|
err2:
|
|
rxe_drop_ref(cq);
|
|
err1:
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static int rxe_destroy_cq(struct ib_cq *ibcq)
|
|
{
|
|
struct rxe_cq *cq = to_rcq(ibcq);
|
|
|
|
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);
|
|
|
|
err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata);
|
|
if (err)
|
|
goto err1;
|
|
|
|
err = rxe_cq_resize_queue(cq, cqe, 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);
|
|
|
|
if (cq->notify != IB_CQ_NEXT_COMP)
|
|
cq->notify = flags & IB_CQ_SOLICITED_MASK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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_mem *mr;
|
|
int err;
|
|
|
|
mr = rxe_alloc(&rxe->mr_pool);
|
|
if (!mr) {
|
|
err = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
rxe_add_index(mr);
|
|
|
|
rxe_add_ref(pd);
|
|
|
|
err = rxe_mem_init_dma(rxe, pd, access, 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 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_mem *mr;
|
|
|
|
mr = rxe_alloc(&rxe->mr_pool);
|
|
if (!mr) {
|
|
err = -ENOMEM;
|
|
goto err2;
|
|
}
|
|
|
|
rxe_add_index(mr);
|
|
|
|
rxe_add_ref(pd);
|
|
|
|
err = rxe_mem_init_user(rxe, 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 rxe_mem *mr = to_rmr(ibmr);
|
|
|
|
mr->state = RXE_MEM_STATE_ZOMBIE;
|
|
rxe_drop_ref(mr->pd);
|
|
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_mem *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_mem_init_fast(rxe, 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_mem *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_mem *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 rxe_show_parent(struct device *device,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct rxe_dev *rxe = container_of(device, struct rxe_dev,
|
|
ib_dev.dev);
|
|
char *name;
|
|
|
|
name = rxe->ifc_ops->parent_name(rxe, 1);
|
|
return snprintf(buf, 16, "%s\n", name);
|
|
}
|
|
|
|
static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL);
|
|
|
|
static struct device_attribute *rxe_dev_attributes[] = {
|
|
&dev_attr_parent,
|
|
};
|
|
|
|
int rxe_register_device(struct rxe_dev *rxe)
|
|
{
|
|
int err;
|
|
int i;
|
|
struct ib_device *dev = &rxe->ib_dev;
|
|
|
|
strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX);
|
|
strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
|
|
|
|
dev->owner = THIS_MODULE;
|
|
dev->node_type = RDMA_NODE_IB_CA;
|
|
dev->phys_port_cnt = 1;
|
|
dev->num_comp_vectors = RXE_NUM_COMP_VECTORS;
|
|
dev->dma_device = rxe->ifc_ops->dma_device(rxe);
|
|
dev->local_dma_lkey = 0;
|
|
dev->node_guid = rxe->ifc_ops->node_guid(rxe);
|
|
dev->dma_ops = &rxe_dma_mapping_ops;
|
|
|
|
dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION;
|
|
dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_POST_SEND)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_POST_RECV)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_REG_MR)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST)
|
|
| BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST)
|
|
;
|
|
|
|
dev->query_device = rxe_query_device;
|
|
dev->modify_device = rxe_modify_device;
|
|
dev->query_port = rxe_query_port;
|
|
dev->modify_port = rxe_modify_port;
|
|
dev->get_link_layer = rxe_get_link_layer;
|
|
dev->query_gid = rxe_query_gid;
|
|
dev->get_netdev = rxe_get_netdev;
|
|
dev->add_gid = rxe_add_gid;
|
|
dev->del_gid = rxe_del_gid;
|
|
dev->query_pkey = rxe_query_pkey;
|
|
dev->alloc_ucontext = rxe_alloc_ucontext;
|
|
dev->dealloc_ucontext = rxe_dealloc_ucontext;
|
|
dev->mmap = rxe_mmap;
|
|
dev->get_port_immutable = rxe_port_immutable;
|
|
dev->alloc_pd = rxe_alloc_pd;
|
|
dev->dealloc_pd = rxe_dealloc_pd;
|
|
dev->create_ah = rxe_create_ah;
|
|
dev->modify_ah = rxe_modify_ah;
|
|
dev->query_ah = rxe_query_ah;
|
|
dev->destroy_ah = rxe_destroy_ah;
|
|
dev->create_srq = rxe_create_srq;
|
|
dev->modify_srq = rxe_modify_srq;
|
|
dev->query_srq = rxe_query_srq;
|
|
dev->destroy_srq = rxe_destroy_srq;
|
|
dev->post_srq_recv = rxe_post_srq_recv;
|
|
dev->create_qp = rxe_create_qp;
|
|
dev->modify_qp = rxe_modify_qp;
|
|
dev->query_qp = rxe_query_qp;
|
|
dev->destroy_qp = rxe_destroy_qp;
|
|
dev->post_send = rxe_post_send;
|
|
dev->post_recv = rxe_post_recv;
|
|
dev->create_cq = rxe_create_cq;
|
|
dev->destroy_cq = rxe_destroy_cq;
|
|
dev->resize_cq = rxe_resize_cq;
|
|
dev->poll_cq = rxe_poll_cq;
|
|
dev->peek_cq = rxe_peek_cq;
|
|
dev->req_notify_cq = rxe_req_notify_cq;
|
|
dev->get_dma_mr = rxe_get_dma_mr;
|
|
dev->reg_user_mr = rxe_reg_user_mr;
|
|
dev->dereg_mr = rxe_dereg_mr;
|
|
dev->alloc_mr = rxe_alloc_mr;
|
|
dev->map_mr_sg = rxe_map_mr_sg;
|
|
dev->attach_mcast = rxe_attach_mcast;
|
|
dev->detach_mcast = rxe_detach_mcast;
|
|
|
|
err = ib_register_device(dev, NULL);
|
|
if (err) {
|
|
pr_warn("rxe_register_device failed, err = %d\n", err);
|
|
goto err1;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) {
|
|
err = device_create_file(&dev->dev, rxe_dev_attributes[i]);
|
|
if (err) {
|
|
pr_warn("device_create_file failed, i = %d, err = %d\n",
|
|
i, err);
|
|
goto err2;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
ib_unregister_device(dev);
|
|
err1:
|
|
return err;
|
|
}
|
|
|
|
int rxe_unregister_device(struct rxe_dev *rxe)
|
|
{
|
|
int i;
|
|
struct ib_device *dev = &rxe->ib_dev;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i)
|
|
device_remove_file(&dev->dev, rxe_dev_attributes[i]);
|
|
|
|
ib_unregister_device(dev);
|
|
|
|
return 0;
|
|
}
|