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linux/drivers/infiniband/hw/mlx5/qp.c
Michael Guralnik 11f552e217 IB/mlx5: Test write combining support 
Linux can run in all sorts of physical machines and VMs where write
combining may or may not be supported. Currently there is no way to
reliably tell if the system supports WC, or not. The driver uses WC to
optimize posting work to the HCA, and getting this wrong in either
direction can cause a significant performance loss.

Add a test in mlx5_ib initialization process to test whether
write-combining is supported on the machine.  The test will run as part of
the enable_driver callback to ensure that the test runs after the device
is setup and can create and modify the QP needed, but runs before the
device is exposed to the users.

The test opens UD QP and posts NOP WQEs, the WQE written to the BlueFlame
is different from the WQE in memory, requesting CQE only on the BlueFlame
WQE. By checking whether we received a completion on one of these WQEs we
can know if BlueFlame succeeded and this write-combining must be
supported.

Change reporting of BlueFlame support to be dependent on write-combining
support instead of the FW's guess as to what the machine can do.

Link: https://lore.kernel.org/r/20191027062234.10993-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-10-31 15:52:51 -03:00

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/*
* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/module.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_cache.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/rdma_counter.h>
#include <linux/mlx5/fs.h>
#include "mlx5_ib.h"
#include "ib_rep.h"
#include "cmd.h"
/* not supported currently */
static int wq_signature;
enum {
MLX5_IB_ACK_REQ_FREQ = 8,
};
enum {
MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83,
MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
MLX5_IB_LINK_TYPE_IB = 0,
MLX5_IB_LINK_TYPE_ETH = 1
};
enum {
MLX5_IB_SQ_STRIDE = 6,
MLX5_IB_SQ_UMR_INLINE_THRESHOLD = 64,
};
static const u32 mlx5_ib_opcode[] = {
[IB_WR_SEND] = MLX5_OPCODE_SEND,
[IB_WR_LSO] = MLX5_OPCODE_LSO,
[IB_WR_SEND_WITH_IMM] = MLX5_OPCODE_SEND_IMM,
[IB_WR_RDMA_WRITE] = MLX5_OPCODE_RDMA_WRITE,
[IB_WR_RDMA_WRITE_WITH_IMM] = MLX5_OPCODE_RDMA_WRITE_IMM,
[IB_WR_RDMA_READ] = MLX5_OPCODE_RDMA_READ,
[IB_WR_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_CS,
[IB_WR_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_FA,
[IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL,
[IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR,
[IB_WR_REG_MR] = MLX5_OPCODE_UMR,
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS,
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA,
[MLX5_IB_WR_UMR] = MLX5_OPCODE_UMR,
};
struct mlx5_wqe_eth_pad {
u8 rsvd0[16];
};
enum raw_qp_set_mask_map {
MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID = 1UL << 0,
MLX5_RAW_QP_RATE_LIMIT = 1UL << 1,
};
struct mlx5_modify_raw_qp_param {
u16 operation;
u32 set_mask; /* raw_qp_set_mask_map */
struct mlx5_rate_limit rl;
u8 rq_q_ctr_id;
u16 port;
};
static void get_cqs(enum ib_qp_type qp_type,
struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
static int is_qp0(enum ib_qp_type qp_type)
{
return qp_type == IB_QPT_SMI;
}
static int is_sqp(enum ib_qp_type qp_type)
{
return is_qp0(qp_type) || is_qp1(qp_type);
}
/**
* mlx5_ib_read_user_wqe_common() - Copy a WQE (or part of) from user WQ
* to kernel buffer
*
* @umem: User space memory where the WQ is
* @buffer: buffer to copy to
* @buflen: buffer length
* @wqe_index: index of WQE to copy from
* @wq_offset: offset to start of WQ
* @wq_wqe_cnt: number of WQEs in WQ
* @wq_wqe_shift: log2 of WQE size
* @bcnt: number of bytes to copy
* @bytes_copied: number of bytes to copy (return value)
*
* Copies from start of WQE bcnt or less bytes.
* Does not gurantee to copy the entire WQE.
*
* Return: zero on success, or an error code.
*/
static int mlx5_ib_read_user_wqe_common(struct ib_umem *umem,
void *buffer,
u32 buflen,
int wqe_index,
int wq_offset,
int wq_wqe_cnt,
int wq_wqe_shift,
int bcnt,
size_t *bytes_copied)
{
size_t offset = wq_offset + ((wqe_index % wq_wqe_cnt) << wq_wqe_shift);
size_t wq_end = wq_offset + (wq_wqe_cnt << wq_wqe_shift);
size_t copy_length;
int ret;
/* don't copy more than requested, more than buffer length or
* beyond WQ end
*/
copy_length = min_t(u32, buflen, wq_end - offset);
copy_length = min_t(u32, copy_length, bcnt);
ret = ib_umem_copy_from(buffer, umem, offset, copy_length);
if (ret)
return ret;
if (!ret && bytes_copied)
*bytes_copied = copy_length;
return 0;
}
int mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp *qp,
int wqe_index,
void *buffer,
int buflen,
size_t *bc)
{
struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
struct ib_umem *umem = base->ubuffer.umem;
struct mlx5_ib_wq *wq = &qp->sq;
struct mlx5_wqe_ctrl_seg *ctrl;
size_t bytes_copied;
size_t bytes_copied2;
size_t wqe_length;
int ret;
int ds;
if (buflen < sizeof(*ctrl))
return -EINVAL;
/* at first read as much as possible */
ret = mlx5_ib_read_user_wqe_common(umem,
buffer,
buflen,
wqe_index,
wq->offset,
wq->wqe_cnt,
wq->wqe_shift,
buflen,
&bytes_copied);
if (ret)
return ret;
/* we need at least control segment size to proceed */
if (bytes_copied < sizeof(*ctrl))
return -EINVAL;
ctrl = buffer;
ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
wqe_length = ds * MLX5_WQE_DS_UNITS;
/* if we copied enough then we are done */
if (bytes_copied >= wqe_length) {
*bc = bytes_copied;
return 0;
}
/* otherwise this a wrapped around wqe
* so read the remaining bytes starting
* from wqe_index 0
*/
ret = mlx5_ib_read_user_wqe_common(umem,
buffer + bytes_copied,
buflen - bytes_copied,
0,
wq->offset,
wq->wqe_cnt,
wq->wqe_shift,
wqe_length - bytes_copied,
&bytes_copied2);
if (ret)
return ret;
*bc = bytes_copied + bytes_copied2;
return 0;
}
int mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp *qp,
int wqe_index,
void *buffer,
int buflen,
size_t *bc)
{
struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
struct ib_umem *umem = base->ubuffer.umem;
struct mlx5_ib_wq *wq = &qp->rq;
size_t bytes_copied;
int ret;
ret = mlx5_ib_read_user_wqe_common(umem,
buffer,
buflen,
wqe_index,
wq->offset,
wq->wqe_cnt,
wq->wqe_shift,
buflen,
&bytes_copied);
if (ret)
return ret;
*bc = bytes_copied;
return 0;
}
int mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq *srq,
int wqe_index,
void *buffer,
int buflen,
size_t *bc)
{
struct ib_umem *umem = srq->umem;
size_t bytes_copied;
int ret;
ret = mlx5_ib_read_user_wqe_common(umem,
buffer,
buflen,
wqe_index,
0,
srq->msrq.max,
srq->msrq.wqe_shift,
buflen,
&bytes_copied);
if (ret)
return ret;
*bc = bytes_copied;
return 0;
}
static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
{
struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
struct ib_event event;
if (type == MLX5_EVENT_TYPE_PATH_MIG) {
/* This event is only valid for trans_qps */
to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
}
if (ibqp->event_handler) {
event.device = ibqp->device;
event.element.qp = ibqp;
switch (type) {
case MLX5_EVENT_TYPE_PATH_MIG:
event.event = IB_EVENT_PATH_MIG;
break;
case MLX5_EVENT_TYPE_COMM_EST:
event.event = IB_EVENT_COMM_EST;
break;
case MLX5_EVENT_TYPE_SQ_DRAINED:
event.event = IB_EVENT_SQ_DRAINED;
break;
case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
event.event = IB_EVENT_QP_LAST_WQE_REACHED;
break;
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
event.event = IB_EVENT_QP_FATAL;
break;
case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
event.event = IB_EVENT_PATH_MIG_ERR;
break;
case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
event.event = IB_EVENT_QP_REQ_ERR;
break;
case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
event.event = IB_EVENT_QP_ACCESS_ERR;
break;
default:
pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
return;
}
ibqp->event_handler(&event, ibqp->qp_context);
}
}
static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
{
int wqe_size;
int wq_size;
/* Sanity check RQ size before proceeding */
if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
return -EINVAL;
if (!has_rq) {
qp->rq.max_gs = 0;
qp->rq.wqe_cnt = 0;
qp->rq.wqe_shift = 0;
cap->max_recv_wr = 0;
cap->max_recv_sge = 0;
} else {
if (ucmd) {
qp->rq.wqe_cnt = ucmd->rq_wqe_count;
if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
return -EINVAL;
qp->rq.wqe_shift = ucmd->rq_wqe_shift;
if ((1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) < qp->wq_sig)
return -EINVAL;
qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
qp->rq.max_post = qp->rq.wqe_cnt;
} else {
wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
wqe_size = roundup_pow_of_two(wqe_size);
wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
qp->rq.wqe_cnt = wq_size / wqe_size;
if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
wqe_size,
MLX5_CAP_GEN(dev->mdev,
max_wqe_sz_rq));
return -EINVAL;
}
qp->rq.wqe_shift = ilog2(wqe_size);
qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
qp->rq.max_post = qp->rq.wqe_cnt;
}
}
return 0;
}
static int sq_overhead(struct ib_qp_init_attr *attr)
{
int size = 0;
switch (attr->qp_type) {
case IB_QPT_XRC_INI:
size += sizeof(struct mlx5_wqe_xrc_seg);
/* fall through */
case IB_QPT_RC:
size += sizeof(struct mlx5_wqe_ctrl_seg) +
max(sizeof(struct mlx5_wqe_atomic_seg) +
sizeof(struct mlx5_wqe_raddr_seg),
sizeof(struct mlx5_wqe_umr_ctrl_seg) +
sizeof(struct mlx5_mkey_seg) +
MLX5_IB_SQ_UMR_INLINE_THRESHOLD /
MLX5_IB_UMR_OCTOWORD);
break;
case IB_QPT_XRC_TGT:
return 0;
case IB_QPT_UC:
size += sizeof(struct mlx5_wqe_ctrl_seg) +
max(sizeof(struct mlx5_wqe_raddr_seg),
sizeof(struct mlx5_wqe_umr_ctrl_seg) +
sizeof(struct mlx5_mkey_seg));
break;
case IB_QPT_UD:
if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
size += sizeof(struct mlx5_wqe_eth_pad) +
sizeof(struct mlx5_wqe_eth_seg);
/* fall through */
case IB_QPT_SMI:
case MLX5_IB_QPT_HW_GSI:
size += sizeof(struct mlx5_wqe_ctrl_seg) +
sizeof(struct mlx5_wqe_datagram_seg);
break;
case MLX5_IB_QPT_REG_UMR:
size += sizeof(struct mlx5_wqe_ctrl_seg) +
sizeof(struct mlx5_wqe_umr_ctrl_seg) +
sizeof(struct mlx5_mkey_seg);
break;
default:
return -EINVAL;
}
return size;
}
static int calc_send_wqe(struct ib_qp_init_attr *attr)
{
int inl_size = 0;
int size;
size = sq_overhead(attr);
if (size < 0)
return size;
if (attr->cap.max_inline_data) {
inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
attr->cap.max_inline_data;
}
size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN &&
ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
return MLX5_SIG_WQE_SIZE;
else
return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
}
static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size)
{
int max_sge;
if (attr->qp_type == IB_QPT_RC)
max_sge = (min_t(int, wqe_size, 512) -
sizeof(struct mlx5_wqe_ctrl_seg) -
sizeof(struct mlx5_wqe_raddr_seg)) /
sizeof(struct mlx5_wqe_data_seg);
else if (attr->qp_type == IB_QPT_XRC_INI)
max_sge = (min_t(int, wqe_size, 512) -
sizeof(struct mlx5_wqe_ctrl_seg) -
sizeof(struct mlx5_wqe_xrc_seg) -
sizeof(struct mlx5_wqe_raddr_seg)) /
sizeof(struct mlx5_wqe_data_seg);
else
max_sge = (wqe_size - sq_overhead(attr)) /
sizeof(struct mlx5_wqe_data_seg);
return min_t(int, max_sge, wqe_size - sq_overhead(attr) /
sizeof(struct mlx5_wqe_data_seg));
}
static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
struct mlx5_ib_qp *qp)
{
int wqe_size;
int wq_size;
if (!attr->cap.max_send_wr)
return 0;
wqe_size = calc_send_wqe(attr);
mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
if (wqe_size < 0)
return wqe_size;
if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
return -EINVAL;
}
qp->max_inline_data = wqe_size - sq_overhead(attr) -
sizeof(struct mlx5_wqe_inline_seg);
attr->cap.max_inline_data = qp->max_inline_data;
wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n",
attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB,
qp->sq.wqe_cnt,
1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
return -ENOMEM;
}
qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
qp->sq.max_gs = get_send_sge(attr, wqe_size);
if (qp->sq.max_gs < attr->cap.max_send_sge)
return -ENOMEM;
attr->cap.max_send_sge = qp->sq.max_gs;
qp->sq.max_post = wq_size / wqe_size;
attr->cap.max_send_wr = qp->sq.max_post;
return wq_size;
}
static int set_user_buf_size(struct mlx5_ib_dev *dev,
struct mlx5_ib_qp *qp,
struct mlx5_ib_create_qp *ucmd,
struct mlx5_ib_qp_base *base,
struct ib_qp_init_attr *attr)
{
int desc_sz = 1 << qp->sq.wqe_shift;
if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
return -EINVAL;
}
if (ucmd->sq_wqe_count && !is_power_of_2(ucmd->sq_wqe_count)) {
mlx5_ib_warn(dev, "sq_wqe_count %d is not a power of two\n",
ucmd->sq_wqe_count);
return -EINVAL;
}
qp->sq.wqe_cnt = ucmd->sq_wqe_count;
if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
qp->sq.wqe_cnt,
1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
return -EINVAL;
}
if (attr->qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) {
base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
} else {
base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
(qp->sq.wqe_cnt << 6);
}
return 0;
}
static int qp_has_rq(struct ib_qp_init_attr *attr)
{
if (attr->qp_type == IB_QPT_XRC_INI ||
attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
attr->qp_type == MLX5_IB_QPT_REG_UMR ||
!attr->cap.max_recv_wr)
return 0;
return 1;
}
enum {
/* this is the first blue flame register in the array of bfregs assigned
* to a processes. Since we do not use it for blue flame but rather
* regular 64 bit doorbells, we do not need a lock for maintaiing
* "odd/even" order
*/
NUM_NON_BLUE_FLAME_BFREGS = 1,
};
static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi)
{
return get_num_static_uars(dev, bfregi) * MLX5_NON_FP_BFREGS_PER_UAR;
}
static int num_med_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
int n;
n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs -
NUM_NON_BLUE_FLAME_BFREGS;
return n >= 0 ? n : 0;
}
static int first_med_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM;
}
static int first_hi_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
int med;
med = num_med_bfreg(dev, bfregi);
return ++med;
}
static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
int i;
for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) {
if (!bfregi->count[i]) {
bfregi->count[i]++;
return i;
}
}
return -ENOMEM;
}
static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
int minidx = first_med_bfreg(dev, bfregi);
int i;
if (minidx < 0)
return minidx;
for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) {
if (bfregi->count[i] < bfregi->count[minidx])
minidx = i;
if (!bfregi->count[minidx])
break;
}
bfregi->count[minidx]++;
return minidx;
}
static int alloc_bfreg(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi)
{
int bfregn = -ENOMEM;
mutex_lock(&bfregi->lock);
if (bfregi->ver >= 2) {
bfregn = alloc_high_class_bfreg(dev, bfregi);
if (bfregn < 0)
bfregn = alloc_med_class_bfreg(dev, bfregi);
}
if (bfregn < 0) {
BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1);
bfregn = 0;
bfregi->count[bfregn]++;
}
mutex_unlock(&bfregi->lock);
return bfregn;
}
void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn)
{
mutex_lock(&bfregi->lock);
bfregi->count[bfregn]--;
mutex_unlock(&bfregi->lock);
}
static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
{
switch (state) {
case IB_QPS_RESET: return MLX5_QP_STATE_RST;
case IB_QPS_INIT: return MLX5_QP_STATE_INIT;
case IB_QPS_RTR: return MLX5_QP_STATE_RTR;
case IB_QPS_RTS: return MLX5_QP_STATE_RTS;
case IB_QPS_SQD: return MLX5_QP_STATE_SQD;
case IB_QPS_SQE: return MLX5_QP_STATE_SQER;
case IB_QPS_ERR: return MLX5_QP_STATE_ERR;
default: return -1;
}
}
static int to_mlx5_st(enum ib_qp_type type)
{
switch (type) {
case IB_QPT_RC: return MLX5_QP_ST_RC;
case IB_QPT_UC: return MLX5_QP_ST_UC;
case IB_QPT_UD: return MLX5_QP_ST_UD;
case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR;
case IB_QPT_XRC_INI:
case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC;
case IB_QPT_SMI: return MLX5_QP_ST_QP0;
case MLX5_IB_QPT_HW_GSI: return MLX5_QP_ST_QP1;
case MLX5_IB_QPT_DCI: return MLX5_QP_ST_DCI;
case IB_QPT_RAW_IPV6: return MLX5_QP_ST_RAW_IPV6;
case IB_QPT_RAW_PACKET:
case IB_QPT_RAW_ETHERTYPE: return MLX5_QP_ST_RAW_ETHERTYPE;
case IB_QPT_MAX:
default: return -EINVAL;
}
}
static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
struct mlx5_ib_cq *recv_cq);
static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
struct mlx5_ib_cq *recv_cq);
int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi, u32 bfregn,
bool dyn_bfreg)
{
unsigned int bfregs_per_sys_page;
u32 index_of_sys_page;
u32 offset;
bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) *
MLX5_NON_FP_BFREGS_PER_UAR;
index_of_sys_page = bfregn / bfregs_per_sys_page;
if (dyn_bfreg) {
index_of_sys_page += bfregi->num_static_sys_pages;
if (index_of_sys_page >= bfregi->num_sys_pages)
return -EINVAL;
if (bfregn > bfregi->num_dyn_bfregs ||
bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) {
mlx5_ib_dbg(dev, "Invalid dynamic uar index\n");
return -EINVAL;
}
}
offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR;
return bfregi->sys_pages[index_of_sys_page] + offset;
}
static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev, struct ib_udata *udata,
unsigned long addr, size_t size,
struct ib_umem **umem, int *npages, int *page_shift,
int *ncont, u32 *offset)
{
int err;
*umem = ib_umem_get(udata, addr, size, 0, 0);
if (IS_ERR(*umem)) {
mlx5_ib_dbg(dev, "umem_get failed\n");
return PTR_ERR(*umem);
}
mlx5_ib_cont_pages(*umem, addr, 0, npages, page_shift, ncont, NULL);
err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
if (err) {
mlx5_ib_warn(dev, "bad offset\n");
goto err_umem;
}
mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
addr, size, *npages, *page_shift, *ncont, *offset);
return 0;
err_umem:
ib_umem_release(*umem);
*umem = NULL;
return err;
}
static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct mlx5_ib_rwq *rwq, struct ib_udata *udata)
{
struct mlx5_ib_ucontext *context =
rdma_udata_to_drv_context(
udata,
struct mlx5_ib_ucontext,
ibucontext);
if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
atomic_dec(&dev->delay_drop.rqs_cnt);
mlx5_ib_db_unmap_user(context, &rwq->db);
ib_umem_release(rwq->umem);
}
static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct ib_udata *udata, struct mlx5_ib_rwq *rwq,
struct mlx5_ib_create_wq *ucmd)
{
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
int page_shift = 0;
int npages;
u32 offset = 0;
int ncont = 0;
int err;
if (!ucmd->buf_addr)
return -EINVAL;
rwq->umem = ib_umem_get(udata, ucmd->buf_addr, rwq->buf_size, 0, 0);
if (IS_ERR(rwq->umem)) {
mlx5_ib_dbg(dev, "umem_get failed\n");
err = PTR_ERR(rwq->umem);
return err;
}
mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, 0, &npages, &page_shift,
&ncont, NULL);
err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
&rwq->rq_page_offset);
if (err) {
mlx5_ib_warn(dev, "bad offset\n");
goto err_umem;
}
rwq->rq_num_pas = ncont;
rwq->page_shift = page_shift;
rwq->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
(unsigned long long)ucmd->buf_addr, rwq->buf_size,
npages, page_shift, ncont, offset);
err = mlx5_ib_db_map_user(ucontext, udata, ucmd->db_addr, &rwq->db);
if (err) {
mlx5_ib_dbg(dev, "map failed\n");
goto err_umem;
}
rwq->create_type = MLX5_WQ_USER;
return 0;
err_umem:
ib_umem_release(rwq->umem);
return err;
}
static int adjust_bfregn(struct mlx5_ib_dev *dev,
struct mlx5_bfreg_info *bfregi, int bfregn)
{
return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR +
bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
}
static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct mlx5_ib_qp *qp, struct ib_udata *udata,
struct ib_qp_init_attr *attr,
u32 **in,
struct mlx5_ib_create_qp_resp *resp, int *inlen,
struct mlx5_ib_qp_base *base)
{
struct mlx5_ib_ucontext *context;
struct mlx5_ib_create_qp ucmd;
struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
int page_shift = 0;
int uar_index = 0;
int npages;
u32 offset = 0;
int bfregn;
int ncont = 0;
__be64 *pas;
void *qpc;
int err;
u16 uid;
err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
if (err) {
mlx5_ib_dbg(dev, "copy failed\n");
return err;
}
context = rdma_udata_to_drv_context(udata, struct mlx5_ib_ucontext,
ibucontext);
if (ucmd.flags & MLX5_QP_FLAG_BFREG_INDEX) {
uar_index = bfregn_to_uar_index(dev, &context->bfregi,
ucmd.bfreg_index, true);
if (uar_index < 0)
return uar_index;
bfregn = MLX5_IB_INVALID_BFREG;
} else if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL) {
/*
* TBD: should come from the verbs when we have the API
*/
/* In CROSS_CHANNEL CQ and QP must use the same UAR */
bfregn = MLX5_CROSS_CHANNEL_BFREG;
}
else {
bfregn = alloc_bfreg(dev, &context->bfregi);
if (bfregn < 0)
return bfregn;
}
mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index);
if (bfregn != MLX5_IB_INVALID_BFREG)
uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn,
false);
qp->rq.offset = 0;
qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
err = set_user_buf_size(dev, qp, &ucmd, base, attr);
if (err)
goto err_bfreg;
if (ucmd.buf_addr && ubuffer->buf_size) {
ubuffer->buf_addr = ucmd.buf_addr;
err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr,
ubuffer->buf_size, &ubuffer->umem,
&npages, &page_shift, &ncont, &offset);
if (err)
goto err_bfreg;
} else {
ubuffer->umem = NULL;
}
*inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
*in = kvzalloc(*inlen, GFP_KERNEL);
if (!*in) {
err = -ENOMEM;
goto err_umem;
}
uid = (attr->qp_type != IB_QPT_XRC_TGT &&
attr->qp_type != IB_QPT_XRC_INI) ? to_mpd(pd)->uid : 0;
MLX5_SET(create_qp_in, *in, uid, uid);
pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
if (ubuffer->umem)
mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
MLX5_SET(qpc, qpc, log_page_size, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET(qpc, qpc, page_offset, offset);
MLX5_SET(qpc, qpc, uar_page, uar_index);
if (bfregn != MLX5_IB_INVALID_BFREG)
resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn);
else
resp->bfreg_index = MLX5_IB_INVALID_BFREG;
qp->bfregn = bfregn;
err = mlx5_ib_db_map_user(context, udata, ucmd.db_addr, &qp->db);
if (err) {
mlx5_ib_dbg(dev, "map failed\n");
goto err_free;
}
err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
if (err) {
mlx5_ib_dbg(dev, "copy failed\n");
goto err_unmap;
}
qp->create_type = MLX5_QP_USER;
return 0;
err_unmap:
mlx5_ib_db_unmap_user(context, &qp->db);
err_free:
kvfree(*in);
err_umem:
ib_umem_release(ubuffer->umem);
err_bfreg:
if (bfregn != MLX5_IB_INVALID_BFREG)
mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn);
return err;
}
static void destroy_qp_user(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct mlx5_ib_qp *qp, struct mlx5_ib_qp_base *base,
struct ib_udata *udata)
{
struct mlx5_ib_ucontext *context =
rdma_udata_to_drv_context(
udata,
struct mlx5_ib_ucontext,
ibucontext);
mlx5_ib_db_unmap_user(context, &qp->db);
ib_umem_release(base->ubuffer.umem);
/*
* Free only the BFREGs which are handled by the kernel.
* BFREGs of UARs allocated dynamically are handled by user.
*/
if (qp->bfregn != MLX5_IB_INVALID_BFREG)
mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn);
}
/* get_sq_edge - Get the next nearby edge.
*
* An 'edge' is defined as the first following address after the end
* of the fragment or the SQ. Accordingly, during the WQE construction
* which repetitively increases the pointer to write the next data, it
* simply should check if it gets to an edge.
*
* @sq - SQ buffer.
* @idx - Stride index in the SQ buffer.
*
* Return:
* The new edge.
*/
static void *get_sq_edge(struct mlx5_ib_wq *sq, u32 idx)
{
void *fragment_end;
fragment_end = mlx5_frag_buf_get_wqe
(&sq->fbc,
mlx5_frag_buf_get_idx_last_contig_stride(&sq->fbc, idx));
return fragment_end + MLX5_SEND_WQE_BB;
}
static int create_kernel_qp(struct mlx5_ib_dev *dev,
struct ib_qp_init_attr *init_attr,
struct mlx5_ib_qp *qp,
u32 **in, int *inlen,
struct mlx5_ib_qp_base *base)
{
int uar_index;
void *qpc;
int err;
if (init_attr->create_flags & ~(IB_QP_CREATE_INTEGRITY_EN |
IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
IB_QP_CREATE_IPOIB_UD_LSO |
IB_QP_CREATE_NETIF_QP |
MLX5_IB_QP_CREATE_SQPN_QP1 |
MLX5_IB_QP_CREATE_WC_TEST))
return -EINVAL;
if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
qp->bf.bfreg = &dev->fp_bfreg;
else if (init_attr->create_flags & MLX5_IB_QP_CREATE_WC_TEST)
qp->bf.bfreg = &dev->wc_bfreg;
else
qp->bf.bfreg = &dev->bfreg;
/* We need to divide by two since each register is comprised of
* two buffers of identical size, namely odd and even
*/
qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2;
uar_index = qp->bf.bfreg->index;
err = calc_sq_size(dev, init_attr, qp);
if (err < 0) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
qp->rq.offset = 0;
qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
err = mlx5_frag_buf_alloc_node(dev->mdev, base->ubuffer.buf_size,
&qp->buf, dev->mdev->priv.numa_node);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
if (qp->rq.wqe_cnt)
mlx5_init_fbc(qp->buf.frags, qp->rq.wqe_shift,
ilog2(qp->rq.wqe_cnt), &qp->rq.fbc);
if (qp->sq.wqe_cnt) {
int sq_strides_offset = (qp->sq.offset & (PAGE_SIZE - 1)) /
MLX5_SEND_WQE_BB;
mlx5_init_fbc_offset(qp->buf.frags +
(qp->sq.offset / PAGE_SIZE),
ilog2(MLX5_SEND_WQE_BB),
ilog2(qp->sq.wqe_cnt),
sq_strides_offset, &qp->sq.fbc);
qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
}
*inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
*in = kvzalloc(*inlen, GFP_KERNEL);
if (!*in) {
err = -ENOMEM;
goto err_buf;
}
qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
MLX5_SET(qpc, qpc, uar_page, uar_index);
MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
/* Set "fast registration enabled" for all kernel QPs */
MLX5_SET(qpc, qpc, fre, 1);
MLX5_SET(qpc, qpc, rlky, 1);
if (init_attr->create_flags & MLX5_IB_QP_CREATE_SQPN_QP1) {
MLX5_SET(qpc, qpc, deth_sqpn, 1);
qp->flags |= MLX5_IB_QP_SQPN_QP1;
}
mlx5_fill_page_frag_array(&qp->buf,
(__be64 *)MLX5_ADDR_OF(create_qp_in,
*in, pas));
err = mlx5_db_alloc(dev->mdev, &qp->db);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
goto err_free;
}
qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
sizeof(*qp->sq.wrid), GFP_KERNEL);
qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
sizeof(*qp->sq.wr_data), GFP_KERNEL);
qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
sizeof(*qp->rq.wrid), GFP_KERNEL);
qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
sizeof(*qp->sq.w_list), GFP_KERNEL);
qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
sizeof(*qp->sq.wqe_head), GFP_KERNEL);
if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
!qp->sq.w_list || !qp->sq.wqe_head) {
err = -ENOMEM;
goto err_wrid;
}
qp->create_type = MLX5_QP_KERNEL;
return 0;
err_wrid:
kvfree(qp->sq.wqe_head);
kvfree(qp->sq.w_list);
kvfree(qp->sq.wrid);
kvfree(qp->sq.wr_data);
kvfree(qp->rq.wrid);
mlx5_db_free(dev->mdev, &qp->db);
err_free:
kvfree(*in);
err_buf:
mlx5_frag_buf_free(dev->mdev, &qp->buf);
return err;
}
static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
kvfree(qp->sq.wqe_head);
kvfree(qp->sq.w_list);
kvfree(qp->sq.wrid);
kvfree(qp->sq.wr_data);
kvfree(qp->rq.wrid);
mlx5_db_free(dev->mdev, &qp->db);
mlx5_frag_buf_free(dev->mdev, &qp->buf);
}
static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
{
if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
(attr->qp_type == MLX5_IB_QPT_DCI) ||
(attr->qp_type == IB_QPT_XRC_INI))
return MLX5_SRQ_RQ;
else if (!qp->has_rq)
return MLX5_ZERO_LEN_RQ;
else
return MLX5_NON_ZERO_RQ;
}
static int is_connected(enum ib_qp_type qp_type)
{
if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC ||
qp_type == MLX5_IB_QPT_DCI)
return 1;
return 0;
}
static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
struct mlx5_ib_qp *qp,
struct mlx5_ib_sq *sq, u32 tdn,
struct ib_pd *pd)
{
u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid);
MLX5_SET(tisc, tisc, transport_domain, tdn);
if (qp->flags & MLX5_IB_QP_UNDERLAY)
MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
}
static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
struct mlx5_ib_sq *sq, struct ib_pd *pd)
{
mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid);
}
static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq)
{
if (sq->flow_rule)
mlx5_del_flow_rules(sq->flow_rule);
sq->flow_rule = NULL;
}
static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
struct ib_udata *udata,
struct mlx5_ib_sq *sq, void *qpin,
struct ib_pd *pd)
{
struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
__be64 *pas;
void *in;
void *sqc;
void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
void *wq;
int inlen;
int err;
int page_shift = 0;
int npages;
int ncont = 0;
u32 offset = 0;
err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr, ubuffer->buf_size,
&sq->ubuffer.umem, &npages, &page_shift, &ncont,
&offset);
if (err)
return err;
inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in) {
err = -ENOMEM;
goto err_umem;
}
MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid);
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
MLX5_SET(sqc, sqc, flush_in_error_en, 1);
if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
MLX5_SET(sqc, sqc, tis_lst_sz, 1);
MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
MLX5_CAP_ETH(dev->mdev, swp))
MLX5_SET(sqc, sqc, allow_swp, 1);
wq = MLX5_ADDR_OF(sqc, sqc, wq);
MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
MLX5_SET(wq, wq, log_wq_pg_sz, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET(wq, wq, page_offset, offset);
pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
kvfree(in);
if (err)
goto err_umem;
return 0;
err_umem:
ib_umem_release(sq->ubuffer.umem);
sq->ubuffer.umem = NULL;
return err;
}
static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
struct mlx5_ib_sq *sq)
{
destroy_flow_rule_vport_sq(sq);
mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
ib_umem_release(sq->ubuffer.umem);
}
static size_t get_rq_pas_size(void *qpc)
{
u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
u32 log_rq_size = MLX5_GET(qpc, qpc, log_rq_size);
u32 page_offset = MLX5_GET(qpc, qpc, page_offset);
u32 po_quanta = 1 << (log_page_size - 6);
u32 rq_sz = 1 << (log_rq_size + 4 + log_rq_stride);
u32 page_size = 1 << log_page_size;
u32 rq_sz_po = rq_sz + (page_offset * po_quanta);
u32 rq_num_pas = (rq_sz_po + page_size - 1) / page_size;
return rq_num_pas * sizeof(u64);
}
static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq, void *qpin,
size_t qpinlen, struct ib_pd *pd)
{
struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
__be64 *pas;
__be64 *qp_pas;
void *in;
void *rqc;
void *wq;
void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
size_t rq_pas_size = get_rq_pas_size(qpc);
size_t inlen;
int err;
if (qpinlen < rq_pas_size + MLX5_BYTE_OFF(create_qp_in, pas))
return -EINVAL;
inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
MLX5_SET(rqc, rqc, vsd, 1);
MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
MLX5_SET(rqc, rqc, flush_in_error_en, 1);
MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
MLX5_SET(rqc, rqc, scatter_fcs, 1);
wq = MLX5_ADDR_OF(rqc, rqc, wq);
MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
memcpy(pas, qp_pas, rq_pas_size);
err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
kvfree(in);
return err;
}
static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq)
{
mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
}
static bool tunnel_offload_supported(struct mlx5_core_dev *dev)
{
return (MLX5_CAP_ETH(dev, tunnel_stateless_vxlan) ||
MLX5_CAP_ETH(dev, tunnel_stateless_gre) ||
MLX5_CAP_ETH(dev, tunnel_stateless_geneve_rx));
}
static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq,
u32 qp_flags_en,
struct ib_pd *pd)
{
if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
mlx5_ib_disable_lb(dev, false, true);
mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid);
}
static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq, u32 tdn,
u32 *qp_flags_en,
struct ib_pd *pd,
u32 *out, int outlen)
{
u8 lb_flag = 0;
u32 *in;
void *tirc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(create_tir_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
MLX5_SET(tirc, tirc, transport_domain, tdn);
if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
if (dev->is_rep) {
lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
*qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
}
MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
rq->tirn = MLX5_GET(create_tir_out, out, tirn);
if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
err = mlx5_ib_enable_lb(dev, false, true);
if (err)
destroy_raw_packet_qp_tir(dev, rq, 0, pd);
}
kvfree(in);
return err;
}
static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
u32 *in, size_t inlen,
struct ib_pd *pd,
struct ib_udata *udata,
struct mlx5_ib_create_qp_resp *resp)
{
struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
int err;
u32 tdn = mucontext->tdn;
u16 uid = to_mpd(pd)->uid;
u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {};
if (qp->sq.wqe_cnt) {
err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd);
if (err)
return err;
err = create_raw_packet_qp_sq(dev, udata, sq, in, pd);
if (err)
goto err_destroy_tis;
if (uid) {
resp->tisn = sq->tisn;
resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN;
resp->sqn = sq->base.mqp.qpn;
resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN;
}
sq->base.container_mibqp = qp;
sq->base.mqp.event = mlx5_ib_qp_event;
}
if (qp->rq.wqe_cnt) {
rq->base.container_mibqp = qp;
if (qp->flags & MLX5_IB_QP_CVLAN_STRIPPING)
rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
if (qp->flags & MLX5_IB_QP_PCI_WRITE_END_PADDING)
rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
err = create_raw_packet_qp_rq(dev, rq, in, inlen, pd);
if (err)
goto err_destroy_sq;
err = create_raw_packet_qp_tir(
dev, rq, tdn, &qp->flags_en, pd, out,
MLX5_ST_SZ_BYTES(create_tir_out));
if (err)
goto err_destroy_rq;
if (uid) {
resp->rqn = rq->base.mqp.qpn;
resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN;
resp->tirn = rq->tirn;
resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
resp->tir_icm_addr = MLX5_GET(
create_tir_out, out, icm_address_31_0);
resp->tir_icm_addr |=
(u64)MLX5_GET(create_tir_out, out,
icm_address_39_32)
<< 32;
resp->tir_icm_addr |=
(u64)MLX5_GET(create_tir_out, out,
icm_address_63_40)
<< 40;
resp->comp_mask |=
MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
}
}
}
qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
rq->base.mqp.qpn;
err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
if (err)
goto err_destroy_tir;
return 0;
err_destroy_tir:
destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, pd);
err_destroy_rq:
destroy_raw_packet_qp_rq(dev, rq);
err_destroy_sq:
if (!qp->sq.wqe_cnt)
return err;
destroy_raw_packet_qp_sq(dev, sq);
err_destroy_tis:
destroy_raw_packet_qp_tis(dev, sq, pd);
return err;
}
static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
struct mlx5_ib_qp *qp)
{
struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
if (qp->rq.wqe_cnt) {
destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd);
destroy_raw_packet_qp_rq(dev, rq);
}
if (qp->sq.wqe_cnt) {
destroy_raw_packet_qp_sq(dev, sq);
destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd);
}
}
static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
struct mlx5_ib_raw_packet_qp *raw_packet_qp)
{
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
sq->sq = &qp->sq;
rq->rq = &qp->rq;
sq->doorbell = &qp->db;
rq->doorbell = &qp->db;
}
static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
mlx5_ib_disable_lb(dev, false, true);
mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
to_mpd(qp->ibqp.pd)->uid);
}
static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_create_qp_resp resp = {};
int inlen;
int outlen;
int err;
u32 *in;
u32 *out;
void *tirc;
void *hfso;
u32 selected_fields = 0;
u32 outer_l4;
size_t min_resp_len;
u32 tdn = mucontext->tdn;
struct mlx5_ib_create_qp_rss ucmd = {};
size_t required_cmd_sz;
u8 lb_flag = 0;
if (init_attr->qp_type != IB_QPT_RAW_PACKET)
return -EOPNOTSUPP;
if (init_attr->create_flags || init_attr->send_cq)
return -EINVAL;
min_resp_len = offsetof(typeof(resp), bfreg_index) + sizeof(resp.bfreg_index);
if (udata->outlen < min_resp_len)
return -EINVAL;
required_cmd_sz = offsetof(typeof(ucmd), flags) + sizeof(ucmd.flags);
if (udata->inlen < required_cmd_sz) {
mlx5_ib_dbg(dev, "invalid inlen\n");
return -EINVAL;
}
if (udata->inlen > sizeof(ucmd) &&
!ib_is_udata_cleared(udata, sizeof(ucmd),
udata->inlen - sizeof(ucmd))) {
mlx5_ib_dbg(dev, "inlen is not supported\n");
return -EOPNOTSUPP;
}
if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
mlx5_ib_dbg(dev, "copy failed\n");
return -EFAULT;
}
if (ucmd.comp_mask) {
mlx5_ib_dbg(dev, "invalid comp mask\n");
return -EOPNOTSUPP;
}
if (ucmd.flags & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)) {
mlx5_ib_dbg(dev, "invalid flags\n");
return -EOPNOTSUPP;
}
if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS &&
!tunnel_offload_supported(dev->mdev)) {
mlx5_ib_dbg(dev, "tunnel offloads isn't supported\n");
return -EOPNOTSUPP;
}
if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
!(ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
return -EOPNOTSUPP;
}
if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC || dev->is_rep) {
lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
}
if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
}
err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
if (err) {
mlx5_ib_dbg(dev, "copy failed\n");
return -EINVAL;
}
inlen = MLX5_ST_SZ_BYTES(create_tir_in);
outlen = MLX5_ST_SZ_BYTES(create_tir_out);
in = kvzalloc(inlen + outlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
out = in + MLX5_ST_SZ_DW(create_tir_in);
MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
MLX5_SET(tirc, tirc, disp_type,
MLX5_TIRC_DISP_TYPE_INDIRECT);
MLX5_SET(tirc, tirc, indirect_table,
init_attr->rwq_ind_tbl->ind_tbl_num);
MLX5_SET(tirc, tirc, transport_domain, tdn);
hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER)
hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
else
hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
switch (ucmd.rx_hash_function) {
case MLX5_RX_HASH_FUNC_TOEPLITZ:
{
void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
if (len != ucmd.rx_key_len) {
err = -EINVAL;
goto err;
}
MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
memcpy(rss_key, ucmd.rx_hash_key, len);
break;
}
default:
err = -EOPNOTSUPP;
goto err;
}
if (!ucmd.rx_hash_fields_mask) {
/* special case when this TIR serves as steering entry without hashing */
if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
goto create_tir;
err = -EINVAL;
goto err;
}
if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
err = -EINVAL;
goto err;
}
/* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
MLX5_L3_PROT_TYPE_IPV4);
else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
MLX5_L3_PROT_TYPE_IPV6);
outer_l4 = ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) << 0 |
((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) << 1 |
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
/* Check that only one l4 protocol is set */
if (outer_l4 & (outer_l4 - 1)) {
err = -EINVAL;
goto err;
}
/* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
MLX5_L4_PROT_TYPE_TCP);
else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
MLX5_L4_PROT_TYPE_UDP);
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
(ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
create_tir:
err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn);
if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
err = mlx5_ib_enable_lb(dev, false, true);
if (err)
mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
to_mpd(pd)->uid);
}
if (err)
goto err;
if (mucontext->devx_uid) {
resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
resp.tirn = qp->rss_qp.tirn;
if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
resp.tir_icm_addr =
MLX5_GET(create_tir_out, out, icm_address_31_0);
resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
icm_address_39_32)
<< 32;
resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
icm_address_63_40)
<< 40;
resp.comp_mask |=
MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
}
}
err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
if (err)
goto err_copy;
kvfree(in);
/* qpn is reserved for that QP */
qp->trans_qp.base.mqp.qpn = 0;
qp->flags |= MLX5_IB_QP_RSS;
return 0;
err_copy:
mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, mucontext->devx_uid);
err:
kvfree(in);
return err;
}
static void configure_responder_scat_cqe(struct ib_qp_init_attr *init_attr,
void *qpc)
{
int rcqe_sz;
if (init_attr->qp_type == MLX5_IB_QPT_DCI)
return;
rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
if (init_attr->qp_type == MLX5_IB_QPT_DCT) {
if (rcqe_sz == 128)
MLX5_SET(dctc, qpc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
return;
}
MLX5_SET(qpc, qpc, cs_res,
rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
MLX5_RES_SCAT_DATA32_CQE);
}
static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
struct ib_qp_init_attr *init_attr,
struct mlx5_ib_create_qp *ucmd,
void *qpc)
{
enum ib_qp_type qpt = init_attr->qp_type;
int scqe_sz;
bool allow_scat_cqe = 0;
if (qpt == IB_QPT_UC || qpt == IB_QPT_UD)
return;
if (ucmd)
allow_scat_cqe = ucmd->flags & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
return;
scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq);
if (scqe_sz == 128) {
MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
return;
}
if (init_attr->qp_type != MLX5_IB_QPT_DCI ||
MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe))
MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
}
static int atomic_size_to_mode(int size_mask)
{
/* driver does not support atomic_size > 256B
* and does not know how to translate bigger sizes
*/
int supported_size_mask = size_mask & 0x1ff;
int log_max_size;
if (!supported_size_mask)
return -EOPNOTSUPP;
log_max_size = __fls(supported_size_mask);
if (log_max_size > 3)
return log_max_size;
return MLX5_ATOMIC_MODE_8B;
}
static int get_atomic_mode(struct mlx5_ib_dev *dev,
enum ib_qp_type qp_type)
{
u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic);
int atomic_mode = -EOPNOTSUPP;
int atomic_size_mask;
if (!atomic)
return -EOPNOTSUPP;
if (qp_type == MLX5_IB_QPT_DCT)
atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
else
atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) ||
(atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD))
atomic_mode = atomic_size_to_mode(atomic_size_mask);
if (atomic_mode <= 0 &&
(atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP &&
atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD))
atomic_mode = MLX5_ATOMIC_MODE_IB_COMP;
return atomic_mode;
}
static inline bool check_flags_mask(uint64_t input, uint64_t supported)
{
return (input & ~supported) == 0;
}
static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, struct mlx5_ib_qp *qp)
{
struct mlx5_ib_resources *devr = &dev->devr;
int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_ib_create_qp_resp resp = {};
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_cq *send_cq;
struct mlx5_ib_cq *recv_cq;
unsigned long flags;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
struct mlx5_ib_create_qp ucmd;
struct mlx5_ib_qp_base *base;
int mlx5_st;
void *qpc;
u32 *in;
int err;
mutex_init(&qp->mutex);
spin_lock_init(&qp->sq.lock);
spin_lock_init(&qp->rq.lock);
mlx5_st = to_mlx5_st(init_attr->qp_type);
if (mlx5_st < 0)
return -EINVAL;
if (init_attr->rwq_ind_tbl) {
if (!udata)
return -ENOSYS;
err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
return err;
}
if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
return -EINVAL;
} else {
qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
}
}
if (init_attr->create_flags &
(IB_QP_CREATE_CROSS_CHANNEL |
IB_QP_CREATE_MANAGED_SEND |
IB_QP_CREATE_MANAGED_RECV)) {
if (!MLX5_CAP_GEN(mdev, cd)) {
mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
return -EINVAL;
}
if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
qp->flags |= MLX5_IB_QP_MANAGED_SEND;
if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
qp->flags |= MLX5_IB_QP_MANAGED_RECV;
}
if (init_attr->qp_type == IB_QPT_UD &&
(init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
return -EOPNOTSUPP;
}
if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
return -EOPNOTSUPP;
}
if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
!MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
}
if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
if (init_attr->create_flags & IB_QP_CREATE_CVLAN_STRIPPING) {
if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
MLX5_CAP_ETH(dev->mdev, vlan_cap)) ||
(init_attr->qp_type != IB_QPT_RAW_PACKET))
return -EOPNOTSUPP;
qp->flags |= MLX5_IB_QP_CVLAN_STRIPPING;
}
if (udata) {
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
mlx5_ib_dbg(dev, "copy failed\n");
return -EFAULT;
}
if (!check_flags_mask(ucmd.flags,
MLX5_QP_FLAG_ALLOW_SCATTER_CQE |
MLX5_QP_FLAG_BFREG_INDEX |
MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE |
MLX5_QP_FLAG_SCATTER_CQE |
MLX5_QP_FLAG_SIGNATURE |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC |
MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
MLX5_QP_FLAG_TUNNEL_OFFLOADS |
MLX5_QP_FLAG_TYPE_DCI |
MLX5_QP_FLAG_TYPE_DCT))
return -EINVAL;
err = get_qp_user_index(ucontext, &ucmd, udata->inlen, &uidx);
if (err)
return err;
qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
if (MLX5_CAP_GEN(dev->mdev, sctr_data_cqe))
qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS) {
if (init_attr->qp_type != IB_QPT_RAW_PACKET ||
!tunnel_offload_supported(mdev)) {
mlx5_ib_dbg(dev, "Tunnel offload isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags_en |= MLX5_QP_FLAG_TUNNEL_OFFLOADS;
}
if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC) {
if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
mlx5_ib_dbg(dev, "Self-LB UC isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
}
if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
mlx5_ib_dbg(dev, "Self-LB UM isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
}
if (ucmd.flags & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE) {
if (init_attr->qp_type != IB_QPT_RC ||
!MLX5_CAP_GEN(dev->mdev, qp_packet_based)) {
mlx5_ib_dbg(dev, "packet based credit mode isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags |= MLX5_IB_QP_PACKET_BASED_CREDIT;
}
if (init_attr->create_flags & IB_QP_CREATE_SOURCE_QPN) {
if (init_attr->qp_type != IB_QPT_UD ||
(MLX5_CAP_GEN(dev->mdev, port_type) !=
MLX5_CAP_PORT_TYPE_IB) ||
!mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) {
mlx5_ib_dbg(dev, "Source QP option isn't supported\n");
return -EOPNOTSUPP;
}
qp->flags |= MLX5_IB_QP_UNDERLAY;
qp->underlay_qpn = init_attr->source_qpn;
}
} else {
qp->wq_sig = !!wq_signature;
}
base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
qp->has_rq = qp_has_rq(init_attr);
err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
qp, udata ? &ucmd : NULL);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
if (pd) {
if (udata) {
__u32 max_wqes =
1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
mlx5_ib_dbg(dev, "invalid rq params\n");
return -EINVAL;
}
if (ucmd.sq_wqe_count > max_wqes) {
mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
ucmd.sq_wqe_count, max_wqes);
return -EINVAL;
}
if (init_attr->create_flags &
MLX5_IB_QP_CREATE_SQPN_QP1) {
mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
return -EINVAL;
}
err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
&resp, &inlen, base);
if (err)
mlx5_ib_dbg(dev, "err %d\n", err);
} else {
err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
base);
if (err)
mlx5_ib_dbg(dev, "err %d\n", err);
}
if (err)
return err;
} else {
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
qp->create_type = MLX5_QP_EMPTY;
}
if (is_sqp(init_attr->qp_type))
qp->port = init_attr->port_num;
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
MLX5_SET(qpc, qpc, st, mlx5_st);
MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
else
MLX5_SET(qpc, qpc, latency_sensitive, 1);
if (qp->wq_sig)
MLX5_SET(qpc, qpc, wq_signature, 1);
if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
MLX5_SET(qpc, qpc, block_lb_mc, 1);
if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
MLX5_SET(qpc, qpc, cd_master, 1);
if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
MLX5_SET(qpc, qpc, cd_slave_send, 1);
if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
MLX5_SET(qpc, qpc, cd_slave_receive, 1);
if (qp->flags & MLX5_IB_QP_PACKET_BASED_CREDIT)
MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
configure_responder_scat_cqe(init_attr, qpc);
configure_requester_scat_cqe(dev, init_attr,
udata ? &ucmd : NULL,
qpc);
}
if (qp->rq.wqe_cnt) {
MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
}
MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
if (qp->sq.wqe_cnt) {
MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
} else {
MLX5_SET(qpc, qpc, no_sq, 1);
if (init_attr->srq &&
init_attr->srq->srq_type == IB_SRQT_TM)
MLX5_SET(qpc, qpc, offload_type,
MLX5_QPC_OFFLOAD_TYPE_RNDV);
}
/* Set default resources */
switch (init_attr->qp_type) {
case IB_QPT_XRC_TGT:
MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
MLX5_SET(qpc, qpc, xrcd, to_mxrcd(init_attr->xrcd)->xrcdn);
break;
case IB_QPT_XRC_INI:
MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
break;
default:
if (init_attr->srq) {
MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
} else {
MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
}
}
if (init_attr->send_cq)
MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
if (init_attr->recv_cq)
MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
/* 0xffffff means we ask to work with cqe version 0 */
if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
MLX5_SET(qpc, qpc, user_index, uidx);
/* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
if (init_attr->qp_type == IB_QPT_UD &&
(init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
qp->flags |= MLX5_IB_QP_LSO;
}
if (init_attr->create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
mlx5_ib_dbg(dev, "scatter end padding is not supported\n");
err = -EOPNOTSUPP;
goto err;
} else if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
MLX5_SET(qpc, qpc, end_padding_mode,
MLX5_WQ_END_PAD_MODE_ALIGN);
} else {
qp->flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING;
}
}
if (inlen < 0) {
err = -EINVAL;
goto err;
}
if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) {
qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata,
&resp);
} else {
err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
}
if (err) {
mlx5_ib_dbg(dev, "create qp failed\n");
goto err_create;
}
kvfree(in);
base->container_mibqp = qp;
base->mqp.event = mlx5_ib_qp_event;
get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
&send_cq, &recv_cq);
spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
mlx5_ib_lock_cqs(send_cq, recv_cq);
/* Maintain device to QPs access, needed for further handling via reset
* flow
*/
list_add_tail(&qp->qps_list, &dev->qp_list);
/* Maintain CQ to QPs access, needed for further handling via reset flow
*/
if (send_cq)
list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
if (recv_cq)
list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
mlx5_ib_unlock_cqs(send_cq, recv_cq);
spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
return 0;
err_create:
if (qp->create_type == MLX5_QP_USER)
destroy_qp_user(dev, pd, qp, base, udata);
else if (qp->create_type == MLX5_QP_KERNEL)
destroy_qp_kernel(dev, qp);
err:
kvfree(in);
return err;
}
static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
__acquires(&send_cq->lock) __acquires(&recv_cq->lock)
{
if (send_cq) {
if (recv_cq) {
if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
spin_lock(&send_cq->lock);
spin_lock_nested(&recv_cq->lock,
SINGLE_DEPTH_NESTING);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
spin_lock(&send_cq->lock);
__acquire(&recv_cq->lock);
} else {
spin_lock(&recv_cq->lock);
spin_lock_nested(&send_cq->lock,
SINGLE_DEPTH_NESTING);
}
} else {
spin_lock(&send_cq->lock);
__acquire(&recv_cq->lock);
}
} else if (recv_cq) {
spin_lock(&recv_cq->lock);
__acquire(&send_cq->lock);
} else {
__acquire(&send_cq->lock);
__acquire(&recv_cq->lock);
}
}
static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
__releases(&send_cq->lock) __releases(&recv_cq->lock)
{
if (send_cq) {
if (recv_cq) {
if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
spin_unlock(&recv_cq->lock);
spin_unlock(&send_cq->lock);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
__release(&recv_cq->lock);
spin_unlock(&send_cq->lock);
} else {
spin_unlock(&send_cq->lock);
spin_unlock(&recv_cq->lock);
}
} else {
__release(&recv_cq->lock);
spin_unlock(&send_cq->lock);
}
} else if (recv_cq) {
__release(&send_cq->lock);
spin_unlock(&recv_cq->lock);
} else {
__release(&recv_cq->lock);
__release(&send_cq->lock);
}
}
static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
{
return to_mpd(qp->ibqp.pd);
}
static void get_cqs(enum ib_qp_type qp_type,
struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
{
switch (qp_type) {
case IB_QPT_XRC_TGT:
*send_cq = NULL;
*recv_cq = NULL;
break;
case MLX5_IB_QPT_REG_UMR:
case IB_QPT_XRC_INI:
*send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
*recv_cq = NULL;
break;
case IB_QPT_SMI:
case MLX5_IB_QPT_HW_GSI:
case IB_QPT_RC:
case IB_QPT_UC:
case IB_QPT_UD:
case IB_QPT_RAW_IPV6:
case IB_QPT_RAW_ETHERTYPE:
case IB_QPT_RAW_PACKET:
*send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
*recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
break;
case IB_QPT_MAX:
default:
*send_cq = NULL;
*recv_cq = NULL;
break;
}
}
static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct mlx5_modify_raw_qp_param *raw_qp_param,
u8 lag_tx_affinity);
static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
struct ib_udata *udata)
{
struct mlx5_ib_cq *send_cq, *recv_cq;
struct mlx5_ib_qp_base *base;
unsigned long flags;
int err;
if (qp->ibqp.rwq_ind_tbl) {
destroy_rss_raw_qp_tir(dev, qp);
return;
}
base = (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
if (qp->state != IB_QPS_RESET) {
if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET &&
!(qp->flags & MLX5_IB_QP_UNDERLAY)) {
err = mlx5_core_qp_modify(dev->mdev,
MLX5_CMD_OP_2RST_QP, 0,
NULL, &base->mqp);
} else {
struct mlx5_modify_raw_qp_param raw_qp_param = {
.operation = MLX5_CMD_OP_2RST_QP
};
err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
}
if (err)
mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
base->mqp.qpn);
}
get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
&send_cq, &recv_cq);
spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
mlx5_ib_lock_cqs(send_cq, recv_cq);
/* del from lists under both locks above to protect reset flow paths */
list_del(&qp->qps_list);
if (send_cq)
list_del(&qp->cq_send_list);
if (recv_cq)
list_del(&qp->cq_recv_list);
if (qp->create_type == MLX5_QP_KERNEL) {
__mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
if (send_cq != recv_cq)
__mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
NULL);
}
mlx5_ib_unlock_cqs(send_cq, recv_cq);
spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) {
destroy_raw_packet_qp(dev, qp);
} else {
err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
if (err)
mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
base->mqp.qpn);
}
if (qp->create_type == MLX5_QP_KERNEL)
destroy_qp_kernel(dev, qp);
else if (qp->create_type == MLX5_QP_USER)
destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base, udata);
}
static const char *ib_qp_type_str(enum ib_qp_type type)
{
switch (type) {
case IB_QPT_SMI:
return "IB_QPT_SMI";
case IB_QPT_GSI:
return "IB_QPT_GSI";
case IB_QPT_RC:
return "IB_QPT_RC";
case IB_QPT_UC:
return "IB_QPT_UC";
case IB_QPT_UD:
return "IB_QPT_UD";
case IB_QPT_RAW_IPV6:
return "IB_QPT_RAW_IPV6";
case IB_QPT_RAW_ETHERTYPE:
return "IB_QPT_RAW_ETHERTYPE";
case IB_QPT_XRC_INI:
return "IB_QPT_XRC_INI";
case IB_QPT_XRC_TGT:
return "IB_QPT_XRC_TGT";
case IB_QPT_RAW_PACKET:
return "IB_QPT_RAW_PACKET";
case MLX5_IB_QPT_REG_UMR:
return "MLX5_IB_QPT_REG_UMR";
case IB_QPT_DRIVER:
return "IB_QPT_DRIVER";
case IB_QPT_MAX:
default:
return "Invalid QP type";
}
}
static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct mlx5_ib_create_qp *ucmd,
struct ib_udata *udata)
{
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_qp *qp;
int err = 0;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
void *dctc;
if (!attr->srq || !attr->recv_cq)
return ERR_PTR(-EINVAL);
err = get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), &uidx);
if (err)
return ERR_PTR(err);
qp = kzalloc(sizeof(*qp), GFP_KERNEL);
if (!qp)
return ERR_PTR(-ENOMEM);
qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
if (!qp->dct.in) {
err = -ENOMEM;
goto err_free;
}
MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
qp->qp_sub_type = MLX5_IB_QPT_DCT;
MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
MLX5_SET(dctc, dctc, user_index, uidx);
if (ucmd->flags & MLX5_QP_FLAG_SCATTER_CQE)
configure_responder_scat_cqe(attr, dctc);
qp->state = IB_QPS_RESET;
return &qp->ibqp;
err_free:
kfree(qp);
return ERR_PTR(err);
}
static int set_mlx_qp_type(struct mlx5_ib_dev *dev,
struct ib_qp_init_attr *init_attr,
struct mlx5_ib_create_qp *ucmd,
struct ib_udata *udata)
{
enum { MLX_QP_FLAGS = MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI };
int err;
if (!udata)
return -EINVAL;
if (udata->inlen < sizeof(*ucmd)) {
mlx5_ib_dbg(dev, "create_qp user command is smaller than expected\n");
return -EINVAL;
}
err = ib_copy_from_udata(ucmd, udata, sizeof(*ucmd));
if (err)
return err;
if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCI) {
init_attr->qp_type = MLX5_IB_QPT_DCI;
} else {
if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCT) {
init_attr->qp_type = MLX5_IB_QPT_DCT;
} else {
mlx5_ib_dbg(dev, "Invalid QP flags\n");
return -EINVAL;
}
}
if (!MLX5_CAP_GEN(dev->mdev, dct)) {
mlx5_ib_dbg(dev, "DC transport is not supported\n");
return -EOPNOTSUPP;
}
return 0;
}
struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *verbs_init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev;
struct mlx5_ib_qp *qp;
u16 xrcdn = 0;
int err;
struct ib_qp_init_attr mlx_init_attr;
struct ib_qp_init_attr *init_attr = verbs_init_attr;
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
if (pd) {
dev = to_mdev(pd->device);
if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
if (!ucontext) {
mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
return ERR_PTR(-EINVAL);
} else if (!ucontext->cqe_version) {
mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
return ERR_PTR(-EINVAL);
}
}
} else {
/* being cautious here */
if (init_attr->qp_type != IB_QPT_XRC_TGT &&
init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
pr_warn("%s: no PD for transport %s\n", __func__,
ib_qp_type_str(init_attr->qp_type));
return ERR_PTR(-EINVAL);
}
dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
}
if (init_attr->qp_type == IB_QPT_DRIVER) {
struct mlx5_ib_create_qp ucmd;
init_attr = &mlx_init_attr;
memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr));
err = set_mlx_qp_type(dev, init_attr, &ucmd, udata);
if (err)
return ERR_PTR(err);
if (init_attr->qp_type == MLX5_IB_QPT_DCI) {
if (init_attr->cap.max_recv_wr ||
init_attr->cap.max_recv_sge) {
mlx5_ib_dbg(dev, "DCI QP requires zero size receive queue\n");
return ERR_PTR(-EINVAL);
}
} else {
return mlx5_ib_create_dct(pd, init_attr, &ucmd, udata);
}
}
switch (init_attr->qp_type) {
case IB_QPT_XRC_TGT:
case IB_QPT_XRC_INI:
if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
mlx5_ib_dbg(dev, "XRC not supported\n");
return ERR_PTR(-ENOSYS);
}
init_attr->recv_cq = NULL;
if (init_attr->qp_type == IB_QPT_XRC_TGT) {
xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
init_attr->send_cq = NULL;
}
/* fall through */
case IB_QPT_RAW_PACKET:
case IB_QPT_RC:
case IB_QPT_UC:
case IB_QPT_UD:
case IB_QPT_SMI:
case MLX5_IB_QPT_HW_GSI:
case MLX5_IB_QPT_REG_UMR:
case MLX5_IB_QPT_DCI:
qp = kzalloc(sizeof(*qp), GFP_KERNEL);
if (!qp)
return ERR_PTR(-ENOMEM);
err = create_qp_common(dev, pd, init_attr, udata, qp);
if (err) {
mlx5_ib_dbg(dev, "create_qp_common failed\n");
kfree(qp);
return ERR_PTR(err);
}
if (is_qp0(init_attr->qp_type))
qp->ibqp.qp_num = 0;
else if (is_qp1(init_attr->qp_type))
qp->ibqp.qp_num = 1;
else
qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
init_attr->recv_cq ? to_mcq(init_attr->recv_cq)->mcq.cqn : -1,
init_attr->send_cq ? to_mcq(init_attr->send_cq)->mcq.cqn : -1);
qp->trans_qp.xrcdn = xrcdn;
break;
case IB_QPT_GSI:
return mlx5_ib_gsi_create_qp(pd, init_attr);
case IB_QPT_RAW_IPV6:
case IB_QPT_RAW_ETHERTYPE:
case IB_QPT_MAX:
default:
mlx5_ib_dbg(dev, "unsupported qp type %d\n",
init_attr->qp_type);
/* Don't support raw QPs */
return ERR_PTR(-EINVAL);
}
if (verbs_init_attr->qp_type == IB_QPT_DRIVER)
qp->qp_sub_type = init_attr->qp_type;
return &qp->ibqp;
}
static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
{
struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
if (mqp->state == IB_QPS_RTR) {
int err;
err = mlx5_core_destroy_dct(dev->mdev, &mqp->dct.mdct);
if (err) {
mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
return err;
}
}
kfree(mqp->dct.in);
kfree(mqp);
return 0;
}
int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_ib_qp *mqp = to_mqp(qp);
if (unlikely(qp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_destroy_qp(qp);
if (mqp->qp_sub_type == MLX5_IB_QPT_DCT)
return mlx5_ib_destroy_dct(mqp);
destroy_qp_common(dev, mqp, udata);
kfree(mqp);
return 0;
}
static int to_mlx5_access_flags(struct mlx5_ib_qp *qp,
const struct ib_qp_attr *attr,
int attr_mask, __be32 *hw_access_flags_be)
{
u8 dest_rd_atomic;
u32 access_flags, hw_access_flags = 0;
struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
dest_rd_atomic = attr->max_dest_rd_atomic;
else
dest_rd_atomic = qp->trans_qp.resp_depth;
if (attr_mask & IB_QP_ACCESS_FLAGS)
access_flags = attr->qp_access_flags;
else
access_flags = qp->trans_qp.atomic_rd_en;
if (!dest_rd_atomic)
access_flags &= IB_ACCESS_REMOTE_WRITE;
if (access_flags & IB_ACCESS_REMOTE_READ)
hw_access_flags |= MLX5_QP_BIT_RRE;
if (access_flags & IB_ACCESS_REMOTE_ATOMIC) {
int atomic_mode;
atomic_mode = get_atomic_mode(dev, qp->ibqp.qp_type);
if (atomic_mode < 0)
return -EOPNOTSUPP;
hw_access_flags |= MLX5_QP_BIT_RAE;
hw_access_flags |= atomic_mode << MLX5_ATOMIC_MODE_OFFSET;
}
if (access_flags & IB_ACCESS_REMOTE_WRITE)
hw_access_flags |= MLX5_QP_BIT_RWE;
*hw_access_flags_be = cpu_to_be32(hw_access_flags);
return 0;
}
enum {
MLX5_PATH_FLAG_FL = 1 << 0,
MLX5_PATH_FLAG_FREE_AR = 1 << 1,
MLX5_PATH_FLAG_COUNTER = 1 << 2,
};
static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
{
if (rate == IB_RATE_PORT_CURRENT)
return 0;
if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)
return -EINVAL;
while (rate != IB_RATE_PORT_CURRENT &&
!(1 << (rate + MLX5_STAT_RATE_OFFSET) &
MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
--rate;
return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;
}
static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
struct mlx5_ib_sq *sq, u8 sl,
struct ib_pd *pd)
{
void *in;
void *tisc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
kvfree(in);
return err;
}
static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
struct mlx5_ib_sq *sq, u8 tx_affinity,
struct ib_pd *pd)
{
void *in;
void *tisc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
kvfree(in);
return err;
}
static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct rdma_ah_attr *ah,
struct mlx5_qp_path *path, u8 port, int attr_mask,
u32 path_flags, const struct ib_qp_attr *attr,
bool alt)
{
const struct ib_global_route *grh = rdma_ah_read_grh(ah);
int err;
enum ib_gid_type gid_type;
u8 ah_flags = rdma_ah_get_ah_flags(ah);
u8 sl = rdma_ah_get_sl(ah);
if (attr_mask & IB_QP_PKEY_INDEX)
path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
attr->pkey_index);
if (ah_flags & IB_AH_GRH) {
if (grh->sgid_index >=
dev->mdev->port_caps[port - 1].gid_table_len) {
pr_err("sgid_index (%u) too large. max is %d\n",
grh->sgid_index,
dev->mdev->port_caps[port - 1].gid_table_len);
return -EINVAL;
}
}
if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
if (!(ah_flags & IB_AH_GRH))
return -EINVAL;
memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
if (qp->ibqp.qp_type == IB_QPT_RC ||
qp->ibqp.qp_type == IB_QPT_UC ||
qp->ibqp.qp_type == IB_QPT_XRC_INI ||
qp->ibqp.qp_type == IB_QPT_XRC_TGT)
path->udp_sport =
mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
path->dci_cfi_prio_sl = (sl & 0x7) << 4;
gid_type = ah->grh.sgid_attr->gid_type;
if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
path->ecn_dscp = (grh->traffic_class >> 2) & 0x3f;
} else {
path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
path->fl_free_ar |=
(path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah));
path->grh_mlid = rdma_ah_get_path_bits(ah) & 0x7f;
if (ah_flags & IB_AH_GRH)
path->grh_mlid |= 1 << 7;
path->dci_cfi_prio_sl = sl & 0xf;
}
if (ah_flags & IB_AH_GRH) {
path->mgid_index = grh->sgid_index;
path->hop_limit = grh->hop_limit;
path->tclass_flowlabel =
cpu_to_be32((grh->traffic_class << 20) |
(grh->flow_label));
memcpy(path->rgid, grh->dgid.raw, 16);
}
err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
if (err < 0)
return err;
path->static_rate = err;
path->port = port;
if (attr_mask & IB_QP_TIMEOUT)
path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
return modify_raw_packet_eth_prio(dev->mdev,
&qp->raw_packet_qp.sq,
sl & 0xf, qp->ibqp.pd);
return 0;
}
static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
[MLX5_QP_STATE_INIT] = {
[MLX5_QP_STATE_INIT] = {
[MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_PRI_PORT,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_PRI_PORT,
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_Q_KEY |
MLX5_QP_OPTPAR_PRI_PORT,
[MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_PRI_PORT,
},
[MLX5_QP_STATE_RTR] = {
[MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX,
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_Q_KEY,
[MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX |
MLX5_QP_OPTPAR_Q_KEY,
[MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PKEY_INDEX,
},
},
[MLX5_QP_STATE_RTR] = {
[MLX5_QP_STATE_RTS] = {
[MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_RNR_TIMEOUT,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PM_STATE,
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
[MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_RNR_TIMEOUT,
},
},
[MLX5_QP_STATE_RTS] = {
[MLX5_QP_STATE_RTS] = {
[MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RNR_TIMEOUT |
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_ALT_ADDR_PATH,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_ALT_ADDR_PATH,
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
MLX5_QP_OPTPAR_SRQN |
MLX5_QP_OPTPAR_CQN_RCV,
[MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RNR_TIMEOUT |
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_ALT_ADDR_PATH,
},
},
[MLX5_QP_STATE_SQER] = {
[MLX5_QP_STATE_RTS] = {
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
[MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE,
[MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RRE,
[MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RNR_TIMEOUT |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RRE,
},
},
};
static int ib_nr_to_mlx5_nr(int ib_mask)
{
switch (ib_mask) {
case IB_QP_STATE:
return 0;
case IB_QP_CUR_STATE:
return 0;
case IB_QP_EN_SQD_ASYNC_NOTIFY:
return 0;
case IB_QP_ACCESS_FLAGS:
return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
MLX5_QP_OPTPAR_RAE;
case IB_QP_PKEY_INDEX:
return MLX5_QP_OPTPAR_PKEY_INDEX;
case IB_QP_PORT:
return MLX5_QP_OPTPAR_PRI_PORT;
case IB_QP_QKEY:
return MLX5_QP_OPTPAR_Q_KEY;
case IB_QP_AV:
return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
MLX5_QP_OPTPAR_PRI_PORT;
case IB_QP_PATH_MTU:
return 0;
case IB_QP_TIMEOUT:
return MLX5_QP_OPTPAR_ACK_TIMEOUT;
case IB_QP_RETRY_CNT:
return MLX5_QP_OPTPAR_RETRY_COUNT;
case IB_QP_RNR_RETRY:
return MLX5_QP_OPTPAR_RNR_RETRY;
case IB_QP_RQ_PSN:
return 0;
case IB_QP_MAX_QP_RD_ATOMIC:
return MLX5_QP_OPTPAR_SRA_MAX;
case IB_QP_ALT_PATH:
return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
case IB_QP_MIN_RNR_TIMER:
return MLX5_QP_OPTPAR_RNR_TIMEOUT;
case IB_QP_SQ_PSN:
return 0;
case IB_QP_MAX_DEST_RD_ATOMIC:
return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
case IB_QP_PATH_MIG_STATE:
return MLX5_QP_OPTPAR_PM_STATE;
case IB_QP_CAP:
return 0;
case IB_QP_DEST_QPN:
return 0;
}
return 0;
}
static int ib_mask_to_mlx5_opt(int ib_mask)
{
int result = 0;
int i;
for (i = 0; i < 8 * sizeof(int); i++) {
if ((1 << i) & ib_mask)
result |= ib_nr_to_mlx5_nr(1 << i);
}
return result;
}
static int modify_raw_packet_qp_rq(
struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state,
const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
{
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(modify_rq_in, in, rq_state, rq->state);
MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid);
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(rqc, rqc, state, new_state);
if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
MLX5_SET64(modify_rq_in, in, modify_bitmask,
MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
} else
dev_info_once(
&dev->ib_dev.dev,
"RAW PACKET QP counters are not supported on current FW\n");
}
err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in, inlen);
if (err)
goto out;
rq->state = new_state;
out:
kvfree(in);
return err;
}
static int modify_raw_packet_qp_sq(
struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state,
const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
{
struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
struct mlx5_rate_limit old_rl = ibqp->rl;
struct mlx5_rate_limit new_rl = old_rl;
bool new_rate_added = false;
u16 rl_index = 0;
void *in;
void *sqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid);
MLX5_SET(modify_sq_in, in, sq_state, sq->state);
sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
MLX5_SET(sqc, sqc, state, new_state);
if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
if (new_state != MLX5_SQC_STATE_RDY)
pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
__func__);
else
new_rl = raw_qp_param->rl;
}
if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
if (new_rl.rate) {
err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
if (err) {
pr_err("Failed configuring rate limit(err %d): \
rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
err, new_rl.rate, new_rl.max_burst_sz,
new_rl.typical_pkt_sz);
goto out;
}
new_rate_added = true;
}
MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
/* index 0 means no limit */
MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
}
err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
if (err) {
/* Remove new rate from table if failed */
if (new_rate_added)
mlx5_rl_remove_rate(dev, &new_rl);
goto out;
}
/* Only remove the old rate after new rate was set */
if ((old_rl.rate &&
!mlx5_rl_are_equal(&old_rl, &new_rl)) ||
(new_state != MLX5_SQC_STATE_RDY))
mlx5_rl_remove_rate(dev, &old_rl);
ibqp->rl = new_rl;
sq->state = new_state;
out:
kvfree(in);
return err;
}
static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct mlx5_modify_raw_qp_param *raw_qp_param,
u8 tx_affinity)
{
struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
int modify_rq = !!qp->rq.wqe_cnt;
int modify_sq = !!qp->sq.wqe_cnt;
int rq_state;
int sq_state;
int err;
switch (raw_qp_param->operation) {
case MLX5_CMD_OP_RST2INIT_QP:
rq_state = MLX5_RQC_STATE_RDY;
sq_state = MLX5_SQC_STATE_RDY;
break;
case MLX5_CMD_OP_2ERR_QP:
rq_state = MLX5_RQC_STATE_ERR;
sq_state = MLX5_SQC_STATE_ERR;
break;
case MLX5_CMD_OP_2RST_QP:
rq_state = MLX5_RQC_STATE_RST;
sq_state = MLX5_SQC_STATE_RST;
break;
case MLX5_CMD_OP_RTR2RTS_QP:
case MLX5_CMD_OP_RTS2RTS_QP:
if (raw_qp_param->set_mask ==
MLX5_RAW_QP_RATE_LIMIT) {
modify_rq = 0;
sq_state = sq->state;
} else {
return raw_qp_param->set_mask ? -EINVAL : 0;
}
break;
case MLX5_CMD_OP_INIT2INIT_QP:
case MLX5_CMD_OP_INIT2RTR_QP:
if (raw_qp_param->set_mask)
return -EINVAL;
else
return 0;
default:
WARN_ON(1);
return -EINVAL;
}
if (modify_rq) {
err = modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param,
qp->ibqp.pd);
if (err)
return err;
}
if (modify_sq) {
struct mlx5_flow_handle *flow_rule;
if (tx_affinity) {
err = modify_raw_packet_tx_affinity(dev->mdev, sq,
tx_affinity,
qp->ibqp.pd);
if (err)
return err;
}
flow_rule = create_flow_rule_vport_sq(dev, sq,
raw_qp_param->port);
if (IS_ERR(flow_rule))
return PTR_ERR(flow_rule);
err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state,
raw_qp_param, qp->ibqp.pd);
if (err) {
if (flow_rule)
mlx5_del_flow_rules(flow_rule);
return err;
}
if (flow_rule) {
destroy_flow_rule_vport_sq(sq);
sq->flow_rule = flow_rule;
}
return err;
}
return 0;
}
static unsigned int get_tx_affinity(struct mlx5_ib_dev *dev,
struct mlx5_ib_pd *pd,
struct mlx5_ib_qp_base *qp_base,
u8 port_num, struct ib_udata *udata)
{
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
unsigned int tx_port_affinity;
if (ucontext) {
tx_port_affinity = (unsigned int)atomic_add_return(
1, &ucontext->tx_port_affinity) %
MLX5_MAX_PORTS +
1;
mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n",
tx_port_affinity, qp_base->mqp.qpn, ucontext);
} else {
tx_port_affinity =
(unsigned int)atomic_add_return(
1, &dev->port[port_num].roce.tx_port_affinity) %
MLX5_MAX_PORTS +
1;
mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n",
tx_port_affinity, qp_base->mqp.qpn);
}
return tx_port_affinity;
}
static int __mlx5_ib_qp_set_counter(struct ib_qp *qp,
struct rdma_counter *counter)
{
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_ib_qp *mqp = to_mqp(qp);
struct mlx5_qp_context context = {};
struct mlx5_ib_qp_base *base;
u32 set_id;
if (!MLX5_CAP_GEN(dev->mdev, rts2rts_qp_counters_set_id))
return 0;
if (counter)
set_id = counter->id;
else
set_id = mlx5_ib_get_counters_id(dev, mqp->port - 1);
base = &mqp->trans_qp.base;
context.qp_counter_set_usr_page &= cpu_to_be32(0xffffff);
context.qp_counter_set_usr_page |= cpu_to_be32(set_id << 24);
return mlx5_core_qp_modify(dev->mdev,
MLX5_CMD_OP_RTS2RTS_QP,
MLX5_QP_OPTPAR_COUNTER_SET_ID,
&context, &base->mqp);
}
static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
const struct ib_qp_attr *attr, int attr_mask,
enum ib_qp_state cur_state,
enum ib_qp_state new_state,
const struct mlx5_ib_modify_qp *ucmd,
struct ib_udata *udata)
{
static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
[MLX5_QP_STATE_RST] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
[MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP,
},
[MLX5_QP_STATE_INIT] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
[MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP,
[MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP,
},
[MLX5_QP_STATE_RTR] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
[MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP,
},
[MLX5_QP_STATE_RTS] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
[MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP,
},
[MLX5_QP_STATE_SQD] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
},
[MLX5_QP_STATE_SQER] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
[MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP,
},
[MLX5_QP_STATE_ERR] = {
[MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
[MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
}
};
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
struct mlx5_ib_cq *send_cq, *recv_cq;
struct mlx5_qp_context *context;
struct mlx5_ib_pd *pd;
enum mlx5_qp_state mlx5_cur, mlx5_new;
enum mlx5_qp_optpar optpar;
u32 set_id = 0;
int mlx5_st;
int err;
u16 op;
u8 tx_affinity = 0;
mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
qp->qp_sub_type : ibqp->qp_type);
if (mlx5_st < 0)
return -EINVAL;
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return -ENOMEM;
pd = get_pd(qp);
context->flags = cpu_to_be32(mlx5_st << 16);
if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
} else {
switch (attr->path_mig_state) {
case IB_MIG_MIGRATED:
context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
break;
case IB_MIG_REARM:
context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
break;
case IB_MIG_ARMED:
context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
break;
}
}
if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
if ((ibqp->qp_type == IB_QPT_RC) ||
(ibqp->qp_type == IB_QPT_UD &&
!(qp->flags & MLX5_IB_QP_SQPN_QP1)) ||
(ibqp->qp_type == IB_QPT_UC) ||
(ibqp->qp_type == IB_QPT_RAW_PACKET) ||
(ibqp->qp_type == IB_QPT_XRC_INI) ||
(ibqp->qp_type == IB_QPT_XRC_TGT)) {
if (dev->lag_active) {
u8 p = mlx5_core_native_port_num(dev->mdev) - 1;
tx_affinity = get_tx_affinity(dev, pd, base, p,
udata);
context->flags |= cpu_to_be32(tx_affinity << 24);
}
}
}
if (is_sqp(ibqp->qp_type)) {
context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
} else if ((ibqp->qp_type == IB_QPT_UD &&
!(qp->flags & MLX5_IB_QP_UNDERLAY)) ||
ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
} else if (attr_mask & IB_QP_PATH_MTU) {
if (attr->path_mtu < IB_MTU_256 ||
attr->path_mtu > IB_MTU_4096) {
mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
err = -EINVAL;
goto out;
}
context->mtu_msgmax = (attr->path_mtu << 5) |
(u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
}
if (attr_mask & IB_QP_DEST_QPN)
context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
if (attr_mask & IB_QP_PKEY_INDEX)
context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
/* todo implement counter_index functionality */
if (is_sqp(ibqp->qp_type))
context->pri_path.port = qp->port;
if (attr_mask & IB_QP_PORT)
context->pri_path.port = attr->port_num;
if (attr_mask & IB_QP_AV) {
err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
attr_mask, 0, attr, false);
if (err)
goto out;
}
if (attr_mask & IB_QP_TIMEOUT)
context->pri_path.ackto_lt |= attr->timeout << 3;
if (attr_mask & IB_QP_ALT_PATH) {
err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
&context->alt_path,
attr->alt_port_num,
attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
0, attr, true);
if (err)
goto out;
}
get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
&send_cq, &recv_cq);
context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
context->params1 = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
if (attr_mask & IB_QP_RNR_RETRY)
context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
if (attr_mask & IB_QP_RETRY_CNT)
context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
if (attr->max_rd_atomic)
context->params1 |=
cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
}
if (attr_mask & IB_QP_SQ_PSN)
context->next_send_psn = cpu_to_be32(attr->sq_psn);
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
if (attr->max_dest_rd_atomic)
context->params2 |=
cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
}
if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
__be32 access_flags;
err = to_mlx5_access_flags(qp, attr, attr_mask, &access_flags);
if (err)
goto out;
context->params2 |= access_flags;
}
if (attr_mask & IB_QP_MIN_RNR_TIMER)
context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
if (attr_mask & IB_QP_RQ_PSN)
context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
if (attr_mask & IB_QP_QKEY)
context->qkey = cpu_to_be32(attr->qkey);
if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
context->db_rec_addr = cpu_to_be64(qp->db.dma);
if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
qp->port) - 1;
/* Underlay port should be used - index 0 function per port */
if (qp->flags & MLX5_IB_QP_UNDERLAY)
port_num = 0;
if (ibqp->counter)
set_id = ibqp->counter->id;
else
set_id = mlx5_ib_get_counters_id(dev, port_num);
context->qp_counter_set_usr_page |=
cpu_to_be32(set_id << 24);
}
if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
context->sq_crq_size |= cpu_to_be16(1 << 4);
if (qp->flags & MLX5_IB_QP_SQPN_QP1)
context->deth_sqpn = cpu_to_be32(1);
mlx5_cur = to_mlx5_state(cur_state);
mlx5_new = to_mlx5_state(new_state);
if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
!optab[mlx5_cur][mlx5_new]) {
err = -EINVAL;
goto out;
}
op = optab[mlx5_cur][mlx5_new];
optpar = ib_mask_to_mlx5_opt(attr_mask);
optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) {
struct mlx5_modify_raw_qp_param raw_qp_param = {};
raw_qp_param.operation = op;
if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
raw_qp_param.rq_q_ctr_id = set_id;
raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
}
if (attr_mask & IB_QP_PORT)
raw_qp_param.port = attr->port_num;
if (attr_mask & IB_QP_RATE_LIMIT) {
raw_qp_param.rl.rate = attr->rate_limit;
if (ucmd->burst_info.max_burst_sz) {
if (attr->rate_limit &&
MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
raw_qp_param.rl.max_burst_sz =
ucmd->burst_info.max_burst_sz;
} else {
err = -EINVAL;
goto out;
}
}
if (ucmd->burst_info.typical_pkt_sz) {
if (attr->rate_limit &&
MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
raw_qp_param.rl.typical_pkt_sz =
ucmd->burst_info.typical_pkt_sz;
} else {
err = -EINVAL;
goto out;
}
}
raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
}
err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
} else {
err = mlx5_core_qp_modify(dev->mdev, op, optpar, context,
&base->mqp);
}
if (err)
goto out;
qp->state = new_state;
if (attr_mask & IB_QP_ACCESS_FLAGS)
qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
if (attr_mask & IB_QP_PORT)
qp->port = attr->port_num;
if (attr_mask & IB_QP_ALT_PATH)
qp->trans_qp.alt_port = attr->alt_port_num;
/*
* If we moved a kernel QP to RESET, clean up all old CQ
* entries and reinitialize the QP.
*/
if (new_state == IB_QPS_RESET &&
!ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
ibqp->srq ? to_msrq(ibqp->srq) : NULL);
if (send_cq != recv_cq)
mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
qp->rq.head = 0;
qp->rq.tail = 0;
qp->sq.head = 0;
qp->sq.tail = 0;
qp->sq.cur_post = 0;
if (qp->sq.wqe_cnt)
qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
qp->db.db[MLX5_RCV_DBR] = 0;
qp->db.db[MLX5_SND_DBR] = 0;
}
if ((new_state == IB_QPS_RTS) && qp->counter_pending) {
err = __mlx5_ib_qp_set_counter(ibqp, ibqp->counter);
if (!err)
qp->counter_pending = 0;
}
out:
kfree(context);
return err;
}
static inline bool is_valid_mask(int mask, int req, int opt)
{
if ((mask & req) != req)
return false;
if (mask & ~(req | opt))
return false;
return true;
}
/* check valid transition for driver QP types
* for now the only QP type that this function supports is DCI
*/
static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
enum ib_qp_attr_mask attr_mask)
{
int req = IB_QP_STATE;
int opt = 0;
if (new_state == IB_QPS_RESET) {
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
req |= IB_QP_PATH_MTU;
opt = IB_QP_PKEY_INDEX | IB_QP_AV;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
opt = IB_QP_MIN_RNR_TIMER;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
opt = IB_QP_MIN_RNR_TIMER;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
return is_valid_mask(attr_mask, req, opt);
}
return false;
}
/* mlx5_ib_modify_dct: modify a DCT QP
* valid transitions are:
* RESET to INIT: must set access_flags, pkey_index and port
* INIT to RTR : must set min_rnr_timer, tclass, flow_label,
* mtu, gid_index and hop_limit
* Other transitions and attributes are illegal
*/
static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata)
{
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
enum ib_qp_state cur_state, new_state;
int err = 0;
int required = IB_QP_STATE;
void *dctc;
if (!(attr_mask & IB_QP_STATE))
return -EINVAL;
cur_state = qp->state;
new_state = attr->qp_state;
dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
u16 set_id;
required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
if (!is_valid_mask(attr_mask, required, 0))
return -EINVAL;
if (attr->port_num == 0 ||
attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
attr->port_num, dev->num_ports);
return -EINVAL;
}
if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
MLX5_SET(dctc, dctc, rre, 1);
if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
MLX5_SET(dctc, dctc, rwe, 1);
if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
int atomic_mode;
atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT);
if (atomic_mode < 0)
return -EOPNOTSUPP;
MLX5_SET(dctc, dctc, atomic_mode, atomic_mode);
MLX5_SET(dctc, dctc, rae, 1);
}
MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
MLX5_SET(dctc, dctc, port, attr->port_num);
set_id = mlx5_ib_get_counters_id(dev, attr->port_num - 1);
MLX5_SET(dctc, dctc, counter_set_id, set_id);
} else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
struct mlx5_ib_modify_qp_resp resp = {};
u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {0};
u32 min_resp_len = offsetof(typeof(resp), dctn) +
sizeof(resp.dctn);
if (udata->outlen < min_resp_len)
return -EINVAL;
resp.response_length = min_resp_len;
required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
if (!is_valid_mask(attr_mask, required, 0))
return -EINVAL;
MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
err = mlx5_core_create_dct(dev->mdev, &qp->dct.mdct, qp->dct.in,
MLX5_ST_SZ_BYTES(create_dct_in), out,
sizeof(out));
if (err)
return err;
resp.dctn = qp->dct.mdct.mqp.qpn;
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err) {
mlx5_core_destroy_dct(dev->mdev, &qp->dct.mdct);
return err;
}
} else {
mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
return -EINVAL;
}
if (err)
qp->state = IB_QPS_ERR;
else
qp->state = new_state;
return err;
}
int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_ib_modify_qp ucmd = {};
enum ib_qp_type qp_type;
enum ib_qp_state cur_state, new_state;
size_t required_cmd_sz;
int err = -EINVAL;
int port;
if (ibqp->rwq_ind_tbl)
return -ENOSYS;
if (udata && udata->inlen) {
required_cmd_sz = offsetof(typeof(ucmd), reserved) +
sizeof(ucmd.reserved);
if (udata->inlen < required_cmd_sz)
return -EINVAL;
if (udata->inlen > sizeof(ucmd) &&
!ib_is_udata_cleared(udata, sizeof(ucmd),
udata->inlen - sizeof(ucmd)))
return -EOPNOTSUPP;
if (ib_copy_from_udata(&ucmd, udata,
min(udata->inlen, sizeof(ucmd))))
return -EFAULT;
if (ucmd.comp_mask ||
memchr_inv(&ucmd.reserved, 0, sizeof(ucmd.reserved)) ||
memchr_inv(&ucmd.burst_info.reserved, 0,
sizeof(ucmd.burst_info.reserved)))
return -EOPNOTSUPP;
}
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
if (ibqp->qp_type == IB_QPT_DRIVER)
qp_type = qp->qp_sub_type;
else
qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
IB_QPT_GSI : ibqp->qp_type;
if (qp_type == MLX5_IB_QPT_DCT)
return mlx5_ib_modify_dct(ibqp, attr, attr_mask, udata);
mutex_lock(&qp->mutex);
cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
}
if (qp->flags & MLX5_IB_QP_UNDERLAY) {
if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
attr_mask);
goto out;
}
} else if (qp_type != MLX5_IB_QPT_REG_UMR &&
qp_type != MLX5_IB_QPT_DCI &&
!ib_modify_qp_is_ok(cur_state, new_state, qp_type,
attr_mask)) {
mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
cur_state, new_state, ibqp->qp_type, attr_mask);
goto out;
} else if (qp_type == MLX5_IB_QPT_DCI &&
!modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
cur_state, new_state, qp_type, attr_mask);
goto out;
}
if ((attr_mask & IB_QP_PORT) &&
(attr->port_num == 0 ||
attr->port_num > dev->num_ports)) {
mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
attr->port_num, dev->num_ports);
goto out;
}
if (attr_mask & IB_QP_PKEY_INDEX) {
port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
if (attr->pkey_index >=
dev->mdev->port_caps[port - 1].pkey_table_len) {
mlx5_ib_dbg(dev, "invalid pkey index %d\n",
attr->pkey_index);
goto out;
}
}
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
attr->max_rd_atomic >
(1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
attr->max_rd_atomic);
goto out;
}
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
attr->max_dest_rd_atomic >
(1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
attr->max_dest_rd_atomic);
goto out;
}
if (cur_state == new_state && cur_state == IB_QPS_RESET) {
err = 0;
goto out;
}
err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
new_state, &ucmd, udata);
out:
mutex_unlock(&qp->mutex);
return err;
}
static void _handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
u32 wqe_sz, void **cur_edge)
{
u32 idx;
idx = (sq->cur_post + (wqe_sz >> 2)) & (sq->wqe_cnt - 1);
*cur_edge = get_sq_edge(sq, idx);
*seg = mlx5_frag_buf_get_wqe(&sq->fbc, idx);
}
/* handle_post_send_edge - Check if we get to SQ edge. If yes, update to the
* next nearby edge and get new address translation for current WQE position.
* @sq - SQ buffer.
* @seg: Current WQE position (16B aligned).
* @wqe_sz: Total current WQE size [16B].
* @cur_edge: Updated current edge.
*/
static inline void handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
u32 wqe_sz, void **cur_edge)
{
if (likely(*seg != *cur_edge))
return;
_handle_post_send_edge(sq, seg, wqe_sz, cur_edge);
}
/* memcpy_send_wqe - copy data from src to WQE and update the relevant WQ's
* pointers. At the end @seg is aligned to 16B regardless the copied size.
* @sq - SQ buffer.
* @cur_edge: Updated current edge.
* @seg: Current WQE position (16B aligned).
* @wqe_sz: Total current WQE size [16B].
* @src: Pointer to copy from.
* @n: Number of bytes to copy.
*/
static inline void memcpy_send_wqe(struct mlx5_ib_wq *sq, void **cur_edge,
void **seg, u32 *wqe_sz, const void *src,
size_t n)
{
while (likely(n)) {
size_t leftlen = *cur_edge - *seg;
size_t copysz = min_t(size_t, leftlen, n);
size_t stride;
memcpy(*seg, src, copysz);
n -= copysz;
src += copysz;
stride = !n ? ALIGN(copysz, 16) : copysz;
*seg += stride;
*wqe_sz += stride >> 4;
handle_post_send_edge(sq, seg, *wqe_sz, cur_edge);
}
}
static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
{
struct mlx5_ib_cq *cq;
unsigned cur;
cur = wq->head - wq->tail;
if (likely(cur + nreq < wq->max_post))
return 0;
cq = to_mcq(ib_cq);
spin_lock(&cq->lock);
cur = wq->head - wq->tail;
spin_unlock(&cq->lock);
return cur + nreq >= wq->max_post;
}
static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
u64 remote_addr, u32 rkey)
{
rseg->raddr = cpu_to_be64(remote_addr);
rseg->rkey = cpu_to_be32(rkey);
rseg->reserved = 0;
}
static void set_eth_seg(const struct ib_send_wr *wr, struct mlx5_ib_qp *qp,
void **seg, int *size, void **cur_edge)
{
struct mlx5_wqe_eth_seg *eseg = *seg;
memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
if (wr->send_flags & IB_SEND_IP_CSUM)
eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
MLX5_ETH_WQE_L4_CSUM;
if (wr->opcode == IB_WR_LSO) {
struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
size_t left, copysz;
void *pdata = ud_wr->header;
size_t stride;
left = ud_wr->hlen;
eseg->mss = cpu_to_be16(ud_wr->mss);
eseg->inline_hdr.sz = cpu_to_be16(left);
/* memcpy_send_wqe should get a 16B align address. Hence, we
* first copy up to the current edge and then, if needed,
* fall-through to memcpy_send_wqe.
*/
copysz = min_t(u64, *cur_edge - (void *)eseg->inline_hdr.start,
left);
memcpy(eseg->inline_hdr.start, pdata, copysz);
stride = ALIGN(sizeof(struct mlx5_wqe_eth_seg) -
sizeof(eseg->inline_hdr.start) + copysz, 16);
*size += stride / 16;
*seg += stride;
if (copysz < left) {
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
left -= copysz;
pdata += copysz;
memcpy_send_wqe(&qp->sq, cur_edge, seg, size, pdata,
left);
}
return;
}
*seg += sizeof(struct mlx5_wqe_eth_seg);
*size += sizeof(struct mlx5_wqe_eth_seg) / 16;
}
static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
const struct ib_send_wr *wr)
{
memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
}
static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
{
dseg->byte_count = cpu_to_be32(sg->length);
dseg->lkey = cpu_to_be32(sg->lkey);
dseg->addr = cpu_to_be64(sg->addr);
}
static u64 get_xlt_octo(u64 bytes)
{
return ALIGN(bytes, MLX5_IB_UMR_XLT_ALIGNMENT) /
MLX5_IB_UMR_OCTOWORD;
}
static __be64 frwr_mkey_mask(bool atomic)
{
u64 result;
result = MLX5_MKEY_MASK_LEN |
MLX5_MKEY_MASK_PAGE_SIZE |
MLX5_MKEY_MASK_START_ADDR |
MLX5_MKEY_MASK_EN_RINVAL |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_LR |
MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW |
MLX5_MKEY_MASK_SMALL_FENCE |
MLX5_MKEY_MASK_FREE;
if (atomic)
result |= MLX5_MKEY_MASK_A;
return cpu_to_be64(result);
}
static __be64 sig_mkey_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_LEN |
MLX5_MKEY_MASK_PAGE_SIZE |
MLX5_MKEY_MASK_START_ADDR |
MLX5_MKEY_MASK_EN_SIGERR |
MLX5_MKEY_MASK_EN_RINVAL |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_LR |
MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW |
MLX5_MKEY_MASK_SMALL_FENCE |
MLX5_MKEY_MASK_FREE |
MLX5_MKEY_MASK_BSF_EN;
return cpu_to_be64(result);
}
static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
struct mlx5_ib_mr *mr, u8 flags, bool atomic)
{
int size = (mr->ndescs + mr->meta_ndescs) * mr->desc_size;
memset(umr, 0, sizeof(*umr));
umr->flags = flags;
umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
umr->mkey_mask = frwr_mkey_mask(atomic);
}
static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
{
memset(umr, 0, sizeof(*umr));
umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
umr->flags = MLX5_UMR_INLINE;
}
static __be64 get_umr_enable_mr_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_disable_mr_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_update_translation_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_LEN |
MLX5_MKEY_MASK_PAGE_SIZE |
MLX5_MKEY_MASK_START_ADDR;
return cpu_to_be64(result);
}
static __be64 get_umr_update_access_mask(int atomic)
{
u64 result;
result = MLX5_MKEY_MASK_LR |
MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW;
if (atomic)
result |= MLX5_MKEY_MASK_A;
return cpu_to_be64(result);
}
static __be64 get_umr_update_pd_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_PD;
return cpu_to_be64(result);
}
static int umr_check_mkey_mask(struct mlx5_ib_dev *dev, u64 mask)
{
if ((mask & MLX5_MKEY_MASK_PAGE_SIZE &&
MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) ||
(mask & MLX5_MKEY_MASK_A &&
MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)))
return -EPERM;
return 0;
}
static int set_reg_umr_segment(struct mlx5_ib_dev *dev,
struct mlx5_wqe_umr_ctrl_seg *umr,
const struct ib_send_wr *wr, int atomic)
{
const struct mlx5_umr_wr *umrwr = umr_wr(wr);
memset(umr, 0, sizeof(*umr));
if (!umrwr->ignore_free_state) {
if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
/* fail if free */
umr->flags = MLX5_UMR_CHECK_FREE;
else
/* fail if not free */
umr->flags = MLX5_UMR_CHECK_NOT_FREE;
}
umr->xlt_octowords = cpu_to_be16(get_xlt_octo(umrwr->xlt_size));
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_XLT) {
u64 offset = get_xlt_octo(umrwr->offset);
umr->xlt_offset = cpu_to_be16(offset & 0xffff);
umr->xlt_offset_47_16 = cpu_to_be32(offset >> 16);
umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
}
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
umr->mkey_mask |= get_umr_update_translation_mask();
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD_ACCESS) {
umr->mkey_mask |= get_umr_update_access_mask(atomic);
umr->mkey_mask |= get_umr_update_pd_mask();
}
if (wr->send_flags & MLX5_IB_SEND_UMR_ENABLE_MR)
umr->mkey_mask |= get_umr_enable_mr_mask();
if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
umr->mkey_mask |= get_umr_disable_mr_mask();
if (!wr->num_sge)
umr->flags |= MLX5_UMR_INLINE;
return umr_check_mkey_mask(dev, be64_to_cpu(umr->mkey_mask));
}
static u8 get_umr_flags(int acc)
{
return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) |
(acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) |
(acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) |
(acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) |
MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
}
static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
struct mlx5_ib_mr *mr,
u32 key, int access)
{
int ndescs = ALIGN(mr->ndescs + mr->meta_ndescs, 8) >> 1;
memset(seg, 0, sizeof(*seg));
if (mr->access_mode == MLX5_MKC_ACCESS_MODE_MTT)
seg->log2_page_size = ilog2(mr->ibmr.page_size);
else if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
/* KLMs take twice the size of MTTs */
ndescs *= 2;
seg->flags = get_umr_flags(access) | mr->access_mode;
seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
seg->start_addr = cpu_to_be64(mr->ibmr.iova);
seg->len = cpu_to_be64(mr->ibmr.length);
seg->xlt_oct_size = cpu_to_be32(ndescs);
}
static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
{
memset(seg, 0, sizeof(*seg));
seg->status = MLX5_MKEY_STATUS_FREE;
}
static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg,
const struct ib_send_wr *wr)
{
const struct mlx5_umr_wr *umrwr = umr_wr(wr);
memset(seg, 0, sizeof(*seg));
if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
seg->status = MLX5_MKEY_STATUS_FREE;
seg->flags = convert_access(umrwr->access_flags);
if (umrwr->pd)
seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION &&
!umrwr->length)
seg->flags_pd |= cpu_to_be32(MLX5_MKEY_LEN64);
seg->start_addr = cpu_to_be64(umrwr->virt_addr);
seg->len = cpu_to_be64(umrwr->length);
seg->log2_page_size = umrwr->page_shift;
seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
mlx5_mkey_variant(umrwr->mkey));
}
static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
struct mlx5_ib_mr *mr,
struct mlx5_ib_pd *pd)
{
int bcount = mr->desc_size * (mr->ndescs + mr->meta_ndescs);
dseg->addr = cpu_to_be64(mr->desc_map);
dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
}
static __be32 send_ieth(const struct ib_send_wr *wr)
{
switch (wr->opcode) {
case IB_WR_SEND_WITH_IMM:
case IB_WR_RDMA_WRITE_WITH_IMM:
return wr->ex.imm_data;
case IB_WR_SEND_WITH_INV:
return cpu_to_be32(wr->ex.invalidate_rkey);
default:
return 0;
}
}
static u8 calc_sig(void *wqe, int size)
{
u8 *p = wqe;
u8 res = 0;
int i;
for (i = 0; i < size; i++)
res ^= p[i];
return ~res;
}
static u8 wq_sig(void *wqe)
{
return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
}
static int set_data_inl_seg(struct mlx5_ib_qp *qp, const struct ib_send_wr *wr,
void **wqe, int *wqe_sz, void **cur_edge)
{
struct mlx5_wqe_inline_seg *seg;
size_t offset;
int inl = 0;
int i;
seg = *wqe;
*wqe += sizeof(*seg);
offset = sizeof(*seg);
for (i = 0; i < wr->num_sge; i++) {
size_t len = wr->sg_list[i].length;
void *addr = (void *)(unsigned long)(wr->sg_list[i].addr);
inl += len;
if (unlikely(inl > qp->max_inline_data))
return -ENOMEM;
while (likely(len)) {
size_t leftlen;
size_t copysz;
handle_post_send_edge(&qp->sq, wqe,
*wqe_sz + (offset >> 4),
cur_edge);
leftlen = *cur_edge - *wqe;
copysz = min_t(size_t, leftlen, len);
memcpy(*wqe, addr, copysz);
len -= copysz;
addr += copysz;
*wqe += copysz;
offset += copysz;
}
}
seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
*wqe_sz += ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
return 0;
}
static u16 prot_field_size(enum ib_signature_type type)
{
switch (type) {
case IB_SIG_TYPE_T10_DIF:
return MLX5_DIF_SIZE;
default:
return 0;
}
}
static u8 bs_selector(int block_size)
{
switch (block_size) {
case 512: return 0x1;
case 520: return 0x2;
case 4096: return 0x3;
case 4160: return 0x4;
case 1073741824: return 0x5;
default: return 0;
}
}
static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
struct mlx5_bsf_inl *inl)
{
/* Valid inline section and allow BSF refresh */
inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
MLX5_BSF_REFRESH_DIF);
inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
/* repeating block */
inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
MLX5_DIF_CRC : MLX5_DIF_IPCS;
if (domain->sig.dif.ref_remap)
inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
if (domain->sig.dif.app_escape) {
if (domain->sig.dif.ref_escape)
inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
else
inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
}
inl->dif_app_bitmask_check =
cpu_to_be16(domain->sig.dif.apptag_check_mask);
}
static int mlx5_set_bsf(struct ib_mr *sig_mr,
struct ib_sig_attrs *sig_attrs,
struct mlx5_bsf *bsf, u32 data_size)
{
struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
struct mlx5_bsf_basic *basic = &bsf->basic;
struct ib_sig_domain *mem = &sig_attrs->mem;
struct ib_sig_domain *wire = &sig_attrs->wire;
memset(bsf, 0, sizeof(*bsf));
/* Basic + Extended + Inline */
basic->bsf_size_sbs = 1 << 7;
/* Input domain check byte mask */
basic->check_byte_mask = sig_attrs->check_mask;
basic->raw_data_size = cpu_to_be32(data_size);
/* Memory domain */
switch (sig_attrs->mem.sig_type) {
case IB_SIG_TYPE_NONE:
break;
case IB_SIG_TYPE_T10_DIF:
basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
mlx5_fill_inl_bsf(mem, &bsf->m_inl);
break;
default:
return -EINVAL;
}
/* Wire domain */
switch (sig_attrs->wire.sig_type) {
case IB_SIG_TYPE_NONE:
break;
case IB_SIG_TYPE_T10_DIF:
if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
mem->sig_type == wire->sig_type) {
/* Same block structure */
basic->bsf_size_sbs |= 1 << 4;
if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
} else
basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
mlx5_fill_inl_bsf(wire, &bsf->w_inl);
break;
default:
return -EINVAL;
}
return 0;
}
static int set_sig_data_segment(const struct ib_send_wr *send_wr,
struct ib_mr *sig_mr,
struct ib_sig_attrs *sig_attrs,
struct mlx5_ib_qp *qp, void **seg, int *size,
void **cur_edge)
{
struct mlx5_bsf *bsf;
u32 data_len;
u32 data_key;
u64 data_va;
u32 prot_len = 0;
u32 prot_key = 0;
u64 prot_va = 0;
bool prot = false;
int ret;
int wqe_size;
struct mlx5_ib_mr *mr = to_mmr(sig_mr);
struct mlx5_ib_mr *pi_mr = mr->pi_mr;
data_len = pi_mr->data_length;
data_key = pi_mr->ibmr.lkey;
data_va = pi_mr->data_iova;
if (pi_mr->meta_ndescs) {
prot_len = pi_mr->meta_length;
prot_key = pi_mr->ibmr.lkey;
prot_va = pi_mr->pi_iova;
prot = true;
}
if (!prot || (data_key == prot_key && data_va == prot_va &&
data_len == prot_len)) {
/**
* Source domain doesn't contain signature information
* or data and protection are interleaved in memory.
* So need construct:
* ------------------
* | data_klm |
* ------------------
* | BSF |
* ------------------
**/
struct mlx5_klm *data_klm = *seg;
data_klm->bcount = cpu_to_be32(data_len);
data_klm->key = cpu_to_be32(data_key);
data_klm->va = cpu_to_be64(data_va);
wqe_size = ALIGN(sizeof(*data_klm), 64);
} else {
/**
* Source domain contains signature information
* So need construct a strided block format:
* ---------------------------
* | stride_block_ctrl |
* ---------------------------
* | data_klm |
* ---------------------------
* | prot_klm |
* ---------------------------
* | BSF |
* ---------------------------
**/
struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
struct mlx5_stride_block_entry *data_sentry;
struct mlx5_stride_block_entry *prot_sentry;
u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
int prot_size;
sblock_ctrl = *seg;
data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
prot_size = prot_field_size(sig_attrs->mem.sig_type);
if (!prot_size) {
pr_err("Bad block size given: %u\n", block_size);
return -EINVAL;
}
sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
prot_size);
sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
sblock_ctrl->num_entries = cpu_to_be16(2);
data_sentry->bcount = cpu_to_be16(block_size);
data_sentry->key = cpu_to_be32(data_key);
data_sentry->va = cpu_to_be64(data_va);
data_sentry->stride = cpu_to_be16(block_size);
prot_sentry->bcount = cpu_to_be16(prot_size);
prot_sentry->key = cpu_to_be32(prot_key);
prot_sentry->va = cpu_to_be64(prot_va);
prot_sentry->stride = cpu_to_be16(prot_size);
wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
sizeof(*prot_sentry), 64);
}
*seg += wqe_size;
*size += wqe_size / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
bsf = *seg;
ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
if (ret)
return -EINVAL;
*seg += sizeof(*bsf);
*size += sizeof(*bsf) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
return 0;
}
static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
struct ib_mr *sig_mr, int access_flags,
u32 size, u32 length, u32 pdn)
{
u32 sig_key = sig_mr->rkey;
u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
memset(seg, 0, sizeof(*seg));
seg->flags = get_umr_flags(access_flags) | MLX5_MKC_ACCESS_MODE_KLMS;
seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
MLX5_MKEY_BSF_EN | pdn);
seg->len = cpu_to_be64(length);
seg->xlt_oct_size = cpu_to_be32(get_xlt_octo(size));
seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
}
static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
u32 size)
{
memset(umr, 0, sizeof(*umr));
umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
umr->mkey_mask = sig_mkey_mask();
}
static int set_pi_umr_wr(const struct ib_send_wr *send_wr,
struct mlx5_ib_qp *qp, void **seg, int *size,
void **cur_edge)
{
const struct ib_reg_wr *wr = reg_wr(send_wr);
struct mlx5_ib_mr *sig_mr = to_mmr(wr->mr);
struct mlx5_ib_mr *pi_mr = sig_mr->pi_mr;
struct ib_sig_attrs *sig_attrs = sig_mr->ibmr.sig_attrs;
u32 pdn = get_pd(qp)->pdn;
u32 xlt_size;
int region_len, ret;
if (unlikely(send_wr->num_sge != 0) ||
unlikely(wr->access & IB_ACCESS_REMOTE_ATOMIC) ||
unlikely(!sig_mr->sig) || unlikely(!qp->ibqp.integrity_en) ||
unlikely(!sig_mr->sig->sig_status_checked))
return -EINVAL;
/* length of the protected region, data + protection */
region_len = pi_mr->ibmr.length;
/**
* KLM octoword size - if protection was provided
* then we use strided block format (3 octowords),
* else we use single KLM (1 octoword)
**/
if (sig_attrs->mem.sig_type != IB_SIG_TYPE_NONE)
xlt_size = 0x30;
else
xlt_size = sizeof(struct mlx5_klm);
set_sig_umr_segment(*seg, xlt_size);
*seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
*size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
set_sig_mkey_segment(*seg, wr->mr, wr->access, xlt_size, region_len,
pdn);
*seg += sizeof(struct mlx5_mkey_seg);
*size += sizeof(struct mlx5_mkey_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
ret = set_sig_data_segment(send_wr, wr->mr, sig_attrs, qp, seg, size,
cur_edge);
if (ret)
return ret;
sig_mr->sig->sig_status_checked = false;
return 0;
}
static int set_psv_wr(struct ib_sig_domain *domain,
u32 psv_idx, void **seg, int *size)
{
struct mlx5_seg_set_psv *psv_seg = *seg;
memset(psv_seg, 0, sizeof(*psv_seg));
psv_seg->psv_num = cpu_to_be32(psv_idx);
switch (domain->sig_type) {
case IB_SIG_TYPE_NONE:
break;
case IB_SIG_TYPE_T10_DIF:
psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
domain->sig.dif.app_tag);
psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
break;
default:
pr_err("Bad signature type (%d) is given.\n",
domain->sig_type);
return -EINVAL;
}
*seg += sizeof(*psv_seg);
*size += sizeof(*psv_seg) / 16;
return 0;
}
static int set_reg_wr(struct mlx5_ib_qp *qp,
const struct ib_reg_wr *wr,
void **seg, int *size, void **cur_edge,
bool check_not_free)
{
struct mlx5_ib_mr *mr = to_mmr(wr->mr);
struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
struct mlx5_ib_dev *dev = to_mdev(pd->ibpd.device);
int mr_list_size = (mr->ndescs + mr->meta_ndescs) * mr->desc_size;
bool umr_inline = mr_list_size <= MLX5_IB_SQ_UMR_INLINE_THRESHOLD;
bool atomic = wr->access & IB_ACCESS_REMOTE_ATOMIC;
u8 flags = 0;
if (!mlx5_ib_can_use_umr(dev, atomic)) {
mlx5_ib_warn(to_mdev(qp->ibqp.device),
"Fast update of %s for MR is disabled\n",
(MLX5_CAP_GEN(dev->mdev,
umr_modify_entity_size_disabled)) ?
"entity size" :
"atomic access");
return -EINVAL;
}
if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
mlx5_ib_warn(to_mdev(qp->ibqp.device),
"Invalid IB_SEND_INLINE send flag\n");
return -EINVAL;
}
if (check_not_free)
flags |= MLX5_UMR_CHECK_NOT_FREE;
if (umr_inline)
flags |= MLX5_UMR_INLINE;
set_reg_umr_seg(*seg, mr, flags, atomic);
*seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
*size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
*seg += sizeof(struct mlx5_mkey_seg);
*size += sizeof(struct mlx5_mkey_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
if (umr_inline) {
memcpy_send_wqe(&qp->sq, cur_edge, seg, size, mr->descs,
mr_list_size);
*size = ALIGN(*size, MLX5_SEND_WQE_BB >> 4);
} else {
set_reg_data_seg(*seg, mr, pd);
*seg += sizeof(struct mlx5_wqe_data_seg);
*size += (sizeof(struct mlx5_wqe_data_seg) / 16);
}
return 0;
}
static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size,
void **cur_edge)
{
set_linv_umr_seg(*seg);
*seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
*size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
set_linv_mkey_seg(*seg);
*seg += sizeof(struct mlx5_mkey_seg);
*size += sizeof(struct mlx5_mkey_seg) / 16;
handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
}
static void dump_wqe(struct mlx5_ib_qp *qp, u32 idx, int size_16)
{
__be32 *p = NULL;
int i, j;
pr_debug("dump WQE index %u:\n", idx);
for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
if ((i & 0xf) == 0) {
p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, idx);
pr_debug("WQBB at %p:\n", (void *)p);
j = 0;
idx = (idx + 1) & (qp->sq.wqe_cnt - 1);
}
pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
be32_to_cpu(p[j + 3]));
}
}
static int __begin_wqe(struct mlx5_ib_qp *qp, void **seg,
struct mlx5_wqe_ctrl_seg **ctrl,
const struct ib_send_wr *wr, unsigned int *idx,
int *size, void **cur_edge, int nreq,
bool send_signaled, bool solicited)
{
if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)))
return -ENOMEM;
*idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
*seg = mlx5_frag_buf_get_wqe(&qp->sq.fbc, *idx);
*ctrl = *seg;
*(uint32_t *)(*seg + 8) = 0;
(*ctrl)->imm = send_ieth(wr);
(*ctrl)->fm_ce_se = qp->sq_signal_bits |
(send_signaled ? MLX5_WQE_CTRL_CQ_UPDATE : 0) |
(solicited ? MLX5_WQE_CTRL_SOLICITED : 0);
*seg += sizeof(**ctrl);
*size = sizeof(**ctrl) / 16;
*cur_edge = qp->sq.cur_edge;
return 0;
}
static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
struct mlx5_wqe_ctrl_seg **ctrl,
const struct ib_send_wr *wr, unsigned *idx,
int *size, void **cur_edge, int nreq)
{
return __begin_wqe(qp, seg, ctrl, wr, idx, size, cur_edge, nreq,
wr->send_flags & IB_SEND_SIGNALED,
wr->send_flags & IB_SEND_SOLICITED);
}
static void finish_wqe(struct mlx5_ib_qp *qp,
struct mlx5_wqe_ctrl_seg *ctrl,
void *seg, u8 size, void *cur_edge,
unsigned int idx, u64 wr_id, int nreq, u8 fence,
u32 mlx5_opcode)
{
u8 opmod = 0;
ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
mlx5_opcode | ((u32)opmod << 24));
ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
ctrl->fm_ce_se |= fence;
if (unlikely(qp->wq_sig))
ctrl->signature = wq_sig(ctrl);
qp->sq.wrid[idx] = wr_id;
qp->sq.w_list[idx].opcode = mlx5_opcode;
qp->sq.wqe_head[idx] = qp->sq.head + nreq;
qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
qp->sq.w_list[idx].next = qp->sq.cur_post;
/* We save the edge which was possibly updated during the WQE
* construction, into SQ's cache.
*/
seg = PTR_ALIGN(seg, MLX5_SEND_WQE_BB);
qp->sq.cur_edge = (unlikely(seg == cur_edge)) ?
get_sq_edge(&qp->sq, qp->sq.cur_post &
(qp->sq.wqe_cnt - 1)) :
cur_edge;
}
static int _mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
const struct ib_send_wr **bad_wr, bool drain)
{
struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
struct mlx5_core_dev *mdev = dev->mdev;
struct ib_reg_wr reg_pi_wr;
struct mlx5_ib_qp *qp;
struct mlx5_ib_mr *mr;
struct mlx5_ib_mr *pi_mr;
struct mlx5_ib_mr pa_pi_mr;
struct ib_sig_attrs *sig_attrs;
struct mlx5_wqe_xrc_seg *xrc;
struct mlx5_bf *bf;
void *cur_edge;
int uninitialized_var(size);
unsigned long flags;
unsigned idx;
int err = 0;
int num_sge;
void *seg;
int nreq;
int i;
u8 next_fence = 0;
u8 fence;
if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
!drain)) {
*bad_wr = wr;
return -EIO;
}
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
qp = to_mqp(ibqp);
bf = &qp->bf;
spin_lock_irqsave(&qp->sq.lock, flags);
for (nreq = 0; wr; nreq++, wr = wr->next) {
if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
mlx5_ib_warn(dev, "\n");
err = -EINVAL;
*bad_wr = wr;
goto out;
}
num_sge = wr->num_sge;
if (unlikely(num_sge > qp->sq.max_gs)) {
mlx5_ib_warn(dev, "\n");
err = -EINVAL;
*bad_wr = wr;
goto out;
}
err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, &cur_edge,
nreq);
if (err) {
mlx5_ib_warn(dev, "\n");
err = -ENOMEM;
*bad_wr = wr;
goto out;
}
if (wr->opcode == IB_WR_REG_MR ||
wr->opcode == IB_WR_REG_MR_INTEGRITY) {
fence = dev->umr_fence;
next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
} else {
if (wr->send_flags & IB_SEND_FENCE) {
if (qp->next_fence)
fence = MLX5_FENCE_MODE_SMALL_AND_FENCE;
else
fence = MLX5_FENCE_MODE_FENCE;
} else {
fence = qp->next_fence;
}
}
switch (ibqp->qp_type) {
case IB_QPT_XRC_INI:
xrc = seg;
seg += sizeof(*xrc);
size += sizeof(*xrc) / 16;
/* fall through */
case IB_QPT_RC:
switch (wr->opcode) {
case IB_WR_RDMA_READ:
case IB_WR_RDMA_WRITE:
case IB_WR_RDMA_WRITE_WITH_IMM:
set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
rdma_wr(wr)->rkey);
seg += sizeof(struct mlx5_wqe_raddr_seg);
size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
break;
case IB_WR_ATOMIC_CMP_AND_SWP:
case IB_WR_ATOMIC_FETCH_AND_ADD:
case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
err = -ENOSYS;
*bad_wr = wr;
goto out;
case IB_WR_LOCAL_INV:
qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
set_linv_wr(qp, &seg, &size, &cur_edge);
num_sge = 0;
break;
case IB_WR_REG_MR:
qp->sq.wr_data[idx] = IB_WR_REG_MR;
ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
err = set_reg_wr(qp, reg_wr(wr), &seg, &size,
&cur_edge, true);
if (err) {
*bad_wr = wr;
goto out;
}
num_sge = 0;
break;
case IB_WR_REG_MR_INTEGRITY:
qp->sq.wr_data[idx] = IB_WR_REG_MR_INTEGRITY;
mr = to_mmr(reg_wr(wr)->mr);
pi_mr = mr->pi_mr;
if (pi_mr) {
memset(&reg_pi_wr, 0,
sizeof(struct ib_reg_wr));
reg_pi_wr.mr = &pi_mr->ibmr;
reg_pi_wr.access = reg_wr(wr)->access;
reg_pi_wr.key = pi_mr->ibmr.rkey;
ctrl->imm = cpu_to_be32(reg_pi_wr.key);
/* UMR for data + prot registration */
err = set_reg_wr(qp, &reg_pi_wr, &seg,
&size, &cur_edge,
false);
if (err) {
*bad_wr = wr;
goto out;
}
finish_wqe(qp, ctrl, seg, size,
cur_edge, idx, wr->wr_id,
nreq, fence,
MLX5_OPCODE_UMR);
err = begin_wqe(qp, &seg, &ctrl, wr,
&idx, &size, &cur_edge,
nreq);
if (err) {
mlx5_ib_warn(dev, "\n");
err = -ENOMEM;
*bad_wr = wr;
goto out;
}
} else {
memset(&pa_pi_mr, 0,
sizeof(struct mlx5_ib_mr));
/* No UMR, use local_dma_lkey */
pa_pi_mr.ibmr.lkey =
mr->ibmr.pd->local_dma_lkey;
pa_pi_mr.ndescs = mr->ndescs;
pa_pi_mr.data_length = mr->data_length;
pa_pi_mr.data_iova = mr->data_iova;
if (mr->meta_ndescs) {
pa_pi_mr.meta_ndescs =
mr->meta_ndescs;
pa_pi_mr.meta_length =
mr->meta_length;
pa_pi_mr.pi_iova = mr->pi_iova;
}
pa_pi_mr.ibmr.length = mr->ibmr.length;
mr->pi_mr = &pa_pi_mr;
}
ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
/* UMR for sig MR */
err = set_pi_umr_wr(wr, qp, &seg, &size,
&cur_edge);
if (err) {
mlx5_ib_warn(dev, "\n");
*bad_wr = wr;
goto out;
}
finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
wr->wr_id, nreq, fence,
MLX5_OPCODE_UMR);
/*
* SET_PSV WQEs are not signaled and solicited
* on error
*/
sig_attrs = mr->ibmr.sig_attrs;
err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
&size, &cur_edge, nreq, false,
true);
if (err) {
mlx5_ib_warn(dev, "\n");
err = -ENOMEM;
*bad_wr = wr;
goto out;
}
err = set_psv_wr(&sig_attrs->mem,
mr->sig->psv_memory.psv_idx,
&seg, &size);
if (err) {
mlx5_ib_warn(dev, "\n");
*bad_wr = wr;
goto out;
}
finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
wr->wr_id, nreq, next_fence,
MLX5_OPCODE_SET_PSV);
err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
&size, &cur_edge, nreq, false,
true);
if (err) {
mlx5_ib_warn(dev, "\n");
err = -ENOMEM;
*bad_wr = wr;
goto out;
}
err = set_psv_wr(&sig_attrs->wire,
mr->sig->psv_wire.psv_idx,
&seg, &size);
if (err) {
mlx5_ib_warn(dev, "\n");
*bad_wr = wr;
goto out;
}
finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
wr->wr_id, nreq, next_fence,
MLX5_OPCODE_SET_PSV);
qp->next_fence =
MLX5_FENCE_MODE_INITIATOR_SMALL;
num_sge = 0;
goto skip_psv;
default:
break;
}
break;
case IB_QPT_UC:
switch (wr->opcode) {
case IB_WR_RDMA_WRITE:
case IB_WR_RDMA_WRITE_WITH_IMM:
set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
rdma_wr(wr)->rkey);
seg += sizeof(struct mlx5_wqe_raddr_seg);
size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
break;
default:
break;
}
break;
case IB_QPT_SMI:
if (unlikely(!mdev->port_caps[qp->port - 1].has_smi)) {
mlx5_ib_warn(dev, "Send SMP MADs is not allowed\n");
err = -EPERM;
*bad_wr = wr;
goto out;
}
/* fall through */
case MLX5_IB_QPT_HW_GSI:
set_datagram_seg(seg, wr);
seg += sizeof(struct mlx5_wqe_datagram_seg);
size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
break;
case IB_QPT_UD:
set_datagram_seg(seg, wr);
seg += sizeof(struct mlx5_wqe_datagram_seg);
size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
/* handle qp that supports ud offload */
if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
struct mlx5_wqe_eth_pad *pad;
pad = seg;
memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
seg += sizeof(struct mlx5_wqe_eth_pad);
size += sizeof(struct mlx5_wqe_eth_pad) / 16;
set_eth_seg(wr, qp, &seg, &size, &cur_edge);
handle_post_send_edge(&qp->sq, &seg, size,
&cur_edge);
}
break;
case MLX5_IB_QPT_REG_UMR:
if (wr->opcode != MLX5_IB_WR_UMR) {
err = -EINVAL;
mlx5_ib_warn(dev, "bad opcode\n");
goto out;
}
qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
err = set_reg_umr_segment(dev, seg, wr, !!(MLX5_CAP_GEN(mdev, atomic)));
if (unlikely(err))
goto out;
seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
set_reg_mkey_segment(seg, wr);
seg += sizeof(struct mlx5_mkey_seg);
size += sizeof(struct mlx5_mkey_seg) / 16;
handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
break;
default:
break;
}
if (wr->send_flags & IB_SEND_INLINE && num_sge) {
err = set_data_inl_seg(qp, wr, &seg, &size, &cur_edge);
if (unlikely(err)) {
mlx5_ib_warn(dev, "\n");
*bad_wr = wr;
goto out;
}
} else {
for (i = 0; i < num_sge; i++) {
handle_post_send_edge(&qp->sq, &seg, size,
&cur_edge);
if (likely(wr->sg_list[i].length)) {
set_data_ptr_seg
((struct mlx5_wqe_data_seg *)seg,
wr->sg_list + i);
size += sizeof(struct mlx5_wqe_data_seg) / 16;
seg += sizeof(struct mlx5_wqe_data_seg);
}
}
}
qp->next_fence = next_fence;
finish_wqe(qp, ctrl, seg, size, cur_edge, idx, wr->wr_id, nreq,
fence, mlx5_ib_opcode[wr->opcode]);
skip_psv:
if (0)
dump_wqe(qp, idx, size);
}
out:
if (likely(nreq)) {
qp->sq.head += nreq;
/* Make sure that descriptors are written before
* updating doorbell record and ringing the doorbell
*/
wmb();
qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
/* Make sure doorbell record is visible to the HCA before
* we hit doorbell */
wmb();
mlx5_write64((__be32 *)ctrl, bf->bfreg->map + bf->offset);
/* Make sure doorbells don't leak out of SQ spinlock
* and reach the HCA out of order.
*/
bf->offset ^= bf->buf_size;
}
spin_unlock_irqrestore(&qp->sq.lock, flags);
return err;
}
int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
const struct ib_send_wr **bad_wr)
{
return _mlx5_ib_post_send(ibqp, wr, bad_wr, false);
}
static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
{
sig->signature = calc_sig(sig, size);
}
static int _mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
const struct ib_recv_wr **bad_wr, bool drain)
{
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_wqe_data_seg *scat;
struct mlx5_rwqe_sig *sig;
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
struct mlx5_core_dev *mdev = dev->mdev;
unsigned long flags;
int err = 0;
int nreq;
int ind;
int i;
if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
!drain)) {
*bad_wr = wr;
return -EIO;
}
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
spin_lock_irqsave(&qp->rq.lock, flags);
ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
for (nreq = 0; wr; nreq++, wr = wr->next) {
if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
err = -ENOMEM;
*bad_wr = wr;
goto out;
}
if (unlikely(wr->num_sge > qp->rq.max_gs)) {
err = -EINVAL;
*bad_wr = wr;
goto out;
}
scat = mlx5_frag_buf_get_wqe(&qp->rq.fbc, ind);
if (qp->wq_sig)
scat++;
for (i = 0; i < wr->num_sge; i++)
set_data_ptr_seg(scat + i, wr->sg_list + i);
if (i < qp->rq.max_gs) {
scat[i].byte_count = 0;
scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
scat[i].addr = 0;
}
if (qp->wq_sig) {
sig = (struct mlx5_rwqe_sig *)scat;
set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
}
qp->rq.wrid[ind] = wr->wr_id;
ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
}
out:
if (likely(nreq)) {
qp->rq.head += nreq;
/* Make sure that descriptors are written before
* doorbell record.
*/
wmb();
*qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
}
spin_unlock_irqrestore(&qp->rq.lock, flags);
return err;
}
int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
const struct ib_recv_wr **bad_wr)
{
return _mlx5_ib_post_recv(ibqp, wr, bad_wr, false);
}
static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
{
switch (mlx5_state) {
case MLX5_QP_STATE_RST: return IB_QPS_RESET;
case MLX5_QP_STATE_INIT: return IB_QPS_INIT;
case MLX5_QP_STATE_RTR: return IB_QPS_RTR;
case MLX5_QP_STATE_RTS: return IB_QPS_RTS;
case MLX5_QP_STATE_SQ_DRAINING:
case MLX5_QP_STATE_SQD: return IB_QPS_SQD;
case MLX5_QP_STATE_SQER: return IB_QPS_SQE;
case MLX5_QP_STATE_ERR: return IB_QPS_ERR;
default: return -1;
}
}
static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
{
switch (mlx5_mig_state) {
case MLX5_QP_PM_ARMED: return IB_MIG_ARMED;
case MLX5_QP_PM_REARM: return IB_MIG_REARM;
case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
default: return -1;
}
}
static int to_ib_qp_access_flags(int mlx5_flags)
{
int ib_flags = 0;
if (mlx5_flags & MLX5_QP_BIT_RRE)
ib_flags |= IB_ACCESS_REMOTE_READ;
if (mlx5_flags & MLX5_QP_BIT_RWE)
ib_flags |= IB_ACCESS_REMOTE_WRITE;
if (mlx5_flags & MLX5_QP_BIT_RAE)
ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
return ib_flags;
}
static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
struct rdma_ah_attr *ah_attr,
struct mlx5_qp_path *path)
{
memset(ah_attr, 0, sizeof(*ah_attr));
if (!path->port || path->port > ibdev->num_ports)
return;
ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, path->port);
rdma_ah_set_port_num(ah_attr, path->port);
rdma_ah_set_sl(ah_attr, path->dci_cfi_prio_sl & 0xf);
rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid));
rdma_ah_set_path_bits(ah_attr, path->grh_mlid & 0x7f);
rdma_ah_set_static_rate(ah_attr,
path->static_rate ? path->static_rate - 5 : 0);
if (path->grh_mlid & (1 << 7)) {
u32 tc_fl = be32_to_cpu(path->tclass_flowlabel);
rdma_ah_set_grh(ah_attr, NULL,
tc_fl & 0xfffff,
path->mgid_index,
path->hop_limit,
(tc_fl >> 20) & 0xff);
rdma_ah_set_dgid_raw(ah_attr, path->rgid);
}
}
static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
struct mlx5_ib_sq *sq,
u8 *sq_state)
{
int err;
err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
if (err)
goto out;
sq->state = *sq_state;
out:
return err;
}
static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq,
u8 *rq_state)
{
void *out;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(query_rq_out);
out = kvzalloc(inlen, GFP_KERNEL);
if (!out)
return -ENOMEM;
err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
if (err)
goto out;
rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
*rq_state = MLX5_GET(rqc, rqc, state);
rq->state = *rq_state;
out:
kvfree(out);
return err;
}
static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
struct mlx5_ib_qp *qp, u8 *qp_state)
{
static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
[MLX5_RQC_STATE_RST] = {
[MLX5_SQC_STATE_RST] = IB_QPS_RESET,
[MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
[MLX5_SQC_STATE_ERR] = MLX5_QP_STATE_BAD,
[MLX5_SQ_STATE_NA] = IB_QPS_RESET,
},
[MLX5_RQC_STATE_RDY] = {
[MLX5_SQC_STATE_RST] = MLX5_QP_STATE_BAD,
[MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
[MLX5_SQC_STATE_ERR] = IB_QPS_SQE,
[MLX5_SQ_STATE_NA] = MLX5_QP_STATE,
},
[MLX5_RQC_STATE_ERR] = {
[MLX5_SQC_STATE_RST] = MLX5_QP_STATE_BAD,
[MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD,
[MLX5_SQC_STATE_ERR] = IB_QPS_ERR,
[MLX5_SQ_STATE_NA] = IB_QPS_ERR,
},
[MLX5_RQ_STATE_NA] = {
[MLX5_SQC_STATE_RST] = IB_QPS_RESET,
[MLX5_SQC_STATE_RDY] = MLX5_QP_STATE,
[MLX5_SQC_STATE_ERR] = MLX5_QP_STATE,
[MLX5_SQ_STATE_NA] = MLX5_QP_STATE_BAD,
},
};
*qp_state = sqrq_trans[rq_state][sq_state];
if (*qp_state == MLX5_QP_STATE_BAD) {
WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
return -EINVAL;
}
if (*qp_state == MLX5_QP_STATE)
*qp_state = qp->state;
return 0;
}
static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
struct mlx5_ib_qp *qp,
u8 *raw_packet_qp_state)
{
struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
int err;
u8 sq_state = MLX5_SQ_STATE_NA;
u8 rq_state = MLX5_RQ_STATE_NA;
if (qp->sq.wqe_cnt) {
err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
if (err)
return err;
}
if (qp->rq.wqe_cnt) {
err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
if (err)
return err;
}
return sqrq_state_to_qp_state(sq_state, rq_state, qp,
raw_packet_qp_state);
}
static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
struct ib_qp_attr *qp_attr)
{
int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
struct mlx5_qp_context *context;
int mlx5_state;
u32 *outb;
int err = 0;
outb = kzalloc(outlen, GFP_KERNEL);
if (!outb)
return -ENOMEM;
err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
outlen);
if (err)
goto out;
/* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
context = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, outb, qpc);
mlx5_state = be32_to_cpu(context->flags) >> 28;
qp->state = to_ib_qp_state(mlx5_state);
qp_attr->path_mtu = context->mtu_msgmax >> 5;
qp_attr->path_mig_state =
to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
qp_attr->qkey = be32_to_cpu(context->qkey);
qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff;
qp_attr->dest_qp_num = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
qp_attr->qp_access_flags =
to_ib_qp_access_flags(be32_to_cpu(context->params2));
if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
qp_attr->alt_pkey_index =
be16_to_cpu(context->alt_path.pkey_index);
qp_attr->alt_port_num =
rdma_ah_get_port_num(&qp_attr->alt_ah_attr);
}
qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
qp_attr->port_num = context->pri_path.port;
/* qp_attr->en_sqd_async_notify is only applicable in modify qp */
qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
qp_attr->max_dest_rd_atomic =
1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
qp_attr->min_rnr_timer =
(be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
qp_attr->timeout = context->pri_path.ackto_lt >> 3;
qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7;
qp_attr->rnr_retry = (be32_to_cpu(context->params1) >> 13) & 0x7;
qp_attr->alt_timeout = context->alt_path.ackto_lt >> 3;
out:
kfree(outb);
return err;
}
static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
struct ib_qp_attr *qp_attr, int qp_attr_mask,
struct ib_qp_init_attr *qp_init_attr)
{
struct mlx5_core_dct *dct = &mqp->dct.mdct;
u32 *out;
u32 access_flags = 0;
int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
void *dctc;
int err;
int supported_mask = IB_QP_STATE |
IB_QP_ACCESS_FLAGS |
IB_QP_PORT |
IB_QP_MIN_RNR_TIMER |
IB_QP_AV |
IB_QP_PATH_MTU |
IB_QP_PKEY_INDEX;
if (qp_attr_mask & ~supported_mask)
return -EINVAL;
if (mqp->state != IB_QPS_RTR)
return -EINVAL;
out = kzalloc(outlen, GFP_KERNEL);
if (!out)
return -ENOMEM;
err = mlx5_core_dct_query(dev->mdev, dct, out, outlen);
if (err)
goto out;
dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
if (qp_attr_mask & IB_QP_STATE)
qp_attr->qp_state = IB_QPS_RTR;
if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
if (MLX5_GET(dctc, dctc, rre))
access_flags |= IB_ACCESS_REMOTE_READ;
if (MLX5_GET(dctc, dctc, rwe))
access_flags |= IB_ACCESS_REMOTE_WRITE;
if (MLX5_GET(dctc, dctc, rae))
access_flags |= IB_ACCESS_REMOTE_ATOMIC;
qp_attr->qp_access_flags = access_flags;
}
if (qp_attr_mask & IB_QP_PORT)
qp_attr->port_num = MLX5_GET(dctc, dctc, port);
if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
if (qp_attr_mask & IB_QP_AV) {
qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
}
if (qp_attr_mask & IB_QP_PATH_MTU)
qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
if (qp_attr_mask & IB_QP_PKEY_INDEX)
qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
out:
kfree(out);
return err;
}
int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
struct mlx5_ib_qp *qp = to_mqp(ibqp);
int err = 0;
u8 raw_packet_qp_state;
if (ibqp->rwq_ind_tbl)
return -ENOSYS;
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
qp_init_attr);
/* Not all of output fields are applicable, make sure to zero them */
memset(qp_init_attr, 0, sizeof(*qp_init_attr));
memset(qp_attr, 0, sizeof(*qp_attr));
if (unlikely(qp->qp_sub_type == MLX5_IB_QPT_DCT))
return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
qp_attr_mask, qp_init_attr);
mutex_lock(&qp->mutex);
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
qp->flags & MLX5_IB_QP_UNDERLAY) {
err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
if (err)
goto out;
qp->state = raw_packet_qp_state;
qp_attr->port_num = 1;
} else {
err = query_qp_attr(dev, qp, qp_attr);
if (err)
goto out;
}
qp_attr->qp_state = qp->state;
qp_attr->cur_qp_state = qp_attr->qp_state;
qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
qp_attr->cap.max_recv_sge = qp->rq.max_gs;
if (!ibqp->uobject) {
qp_attr->cap.max_send_wr = qp->sq.max_post;
qp_attr->cap.max_send_sge = qp->sq.max_gs;
qp_init_attr->qp_context = ibqp->qp_context;
} else {
qp_attr->cap.max_send_wr = 0;
qp_attr->cap.max_send_sge = 0;
}
qp_init_attr->qp_type = ibqp->qp_type;
qp_init_attr->recv_cq = ibqp->recv_cq;
qp_init_attr->send_cq = ibqp->send_cq;
qp_init_attr->srq = ibqp->srq;
qp_attr->cap.max_inline_data = qp->max_inline_data;
qp_init_attr->cap = qp_attr->cap;
qp_init_attr->create_flags = 0;
if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
if (qp->flags & MLX5_IB_QP_SQPN_QP1)
qp_init_attr->create_flags |= MLX5_IB_QP_CREATE_SQPN_QP1;
qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
out:
mutex_unlock(&qp->mutex);
return err;
}
struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_xrcd *xrcd;
int err;
if (!MLX5_CAP_GEN(dev->mdev, xrc))
return ERR_PTR(-ENOSYS);
xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
if (!xrcd)
return ERR_PTR(-ENOMEM);
err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
if (err) {
kfree(xrcd);
return ERR_PTR(-ENOMEM);
}
return &xrcd->ibxrcd;
}
int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
int err;
err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
if (err)
mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
kfree(xrcd);
return 0;
}
static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
{
struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
struct ib_event event;
if (rwq->ibwq.event_handler) {
event.device = rwq->ibwq.device;
event.element.wq = &rwq->ibwq;
switch (type) {
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
event.event = IB_EVENT_WQ_FATAL;
break;
default:
mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
return;
}
rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
}
}
static int set_delay_drop(struct mlx5_ib_dev *dev)
{
int err = 0;
mutex_lock(&dev->delay_drop.lock);
if (dev->delay_drop.activate)
goto out;
err = mlx5_core_set_delay_drop(dev->mdev, dev->delay_drop.timeout);
if (err)
goto out;
dev->delay_drop.activate = true;
out:
mutex_unlock(&dev->delay_drop.lock);
if (!err)
atomic_inc(&dev->delay_drop.rqs_cnt);
return err;
}
static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
struct ib_wq_init_attr *init_attr)
{
struct mlx5_ib_dev *dev;
int has_net_offloads;
__be64 *rq_pas0;
void *in;
void *rqc;
void *wq;
int inlen;
int err;
dev = to_mdev(pd->device);
inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
MLX5_SET(rqc, rqc, mem_rq_type,
MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
MLX5_SET(rqc, rqc, user_index, rwq->user_index);
MLX5_SET(rqc, rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
MLX5_SET(rqc, rqc, flush_in_error_en, 1);
wq = MLX5_ADDR_OF(rqc, rqc, wq);
MLX5_SET(wq, wq, wq_type,
rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
err = -EOPNOTSUPP;
goto out;
} else {
MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
}
}
MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
MLX5_SET(wq, wq, log_wqe_stride_size,
rwq->single_stride_log_num_of_bytes -
MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
MLX5_SET(wq, wq, log_wqe_num_of_strides, rwq->log_num_strides -
MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES);
}
MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
err = -EOPNOTSUPP;
goto out;
}
} else {
MLX5_SET(rqc, rqc, vsd, 1);
}
if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
err = -EOPNOTSUPP;
goto out;
}
MLX5_SET(rqc, rqc, scatter_fcs, 1);
}
if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
if (!(dev->ib_dev.attrs.raw_packet_caps &
IB_RAW_PACKET_CAP_DELAY_DROP)) {
mlx5_ib_dbg(dev, "Delay drop is not supported\n");
err = -EOPNOTSUPP;
goto out;
}
MLX5_SET(rqc, rqc, delay_drop_en, 1);
}
rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
err = set_delay_drop(dev);
if (err) {
mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
err);
mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
} else {
rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
}
}
out:
kvfree(in);
return err;
}
static int set_user_rq_size(struct mlx5_ib_dev *dev,
struct ib_wq_init_attr *wq_init_attr,
struct mlx5_ib_create_wq *ucmd,
struct mlx5_ib_rwq *rwq)
{
/* Sanity check RQ size before proceeding */
if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
return -EINVAL;
if (!ucmd->rq_wqe_count)
return -EINVAL;
rwq->wqe_count = ucmd->rq_wqe_count;
rwq->wqe_shift = ucmd->rq_wqe_shift;
if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size))
return -EINVAL;
rwq->log_rq_stride = rwq->wqe_shift;
rwq->log_rq_size = ilog2(rwq->wqe_count);
return 0;
}
static int prepare_user_rq(struct ib_pd *pd,
struct ib_wq_init_attr *init_attr,
struct ib_udata *udata,
struct mlx5_ib_rwq *rwq)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_ib_create_wq ucmd = {};
int err;
size_t required_cmd_sz;
required_cmd_sz = offsetof(typeof(ucmd), single_stride_log_num_of_bytes)
+ sizeof(ucmd.single_stride_log_num_of_bytes);
if (udata->inlen < required_cmd_sz) {
mlx5_ib_dbg(dev, "invalid inlen\n");
return -EINVAL;
}
if (udata->inlen > sizeof(ucmd) &&
!ib_is_udata_cleared(udata, sizeof(ucmd),
udata->inlen - sizeof(ucmd))) {
mlx5_ib_dbg(dev, "inlen is not supported\n");
return -EOPNOTSUPP;
}
if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
mlx5_ib_dbg(dev, "copy failed\n");
return -EFAULT;
}
if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
mlx5_ib_dbg(dev, "invalid comp mask\n");
return -EOPNOTSUPP;
} else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
return -EOPNOTSUPP;
}
if ((ucmd.single_stride_log_num_of_bytes <
MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
(ucmd.single_stride_log_num_of_bytes >
MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
ucmd.single_stride_log_num_of_bytes,
MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
return -EINVAL;
}
if ((ucmd.single_wqe_log_num_of_strides >
MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
(ucmd.single_wqe_log_num_of_strides <
MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES)) {
mlx5_ib_dbg(dev, "Invalid log num strides (%u. Range is %u - %u)\n",
ucmd.single_wqe_log_num_of_strides,
MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
return -EINVAL;
}
rwq->single_stride_log_num_of_bytes =
ucmd.single_stride_log_num_of_bytes;
rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
}
err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
err = create_user_rq(dev, pd, udata, rwq, &ucmd);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
rwq->user_index = ucmd.user_index;
return 0;
}
struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
struct ib_wq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev;
struct mlx5_ib_rwq *rwq;
struct mlx5_ib_create_wq_resp resp = {};
size_t min_resp_len;
int err;
if (!udata)
return ERR_PTR(-ENOSYS);
min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
if (udata->outlen && udata->outlen < min_resp_len)
return ERR_PTR(-EINVAL);
dev = to_mdev(pd->device);
switch (init_attr->wq_type) {
case IB_WQT_RQ:
rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
if (!rwq)
return ERR_PTR(-ENOMEM);
err = prepare_user_rq(pd, init_attr, udata, rwq);
if (err)
goto err;
err = create_rq(rwq, pd, init_attr);
if (err)
goto err_user_rq;
break;
default:
mlx5_ib_dbg(dev, "unsupported wq type %d\n",
init_attr->wq_type);
return ERR_PTR(-EINVAL);
}
rwq->ibwq.wq_num = rwq->core_qp.qpn;
rwq->ibwq.state = IB_WQS_RESET;
if (udata->outlen) {
resp.response_length = offsetof(typeof(resp), response_length) +
sizeof(resp.response_length);
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err)
goto err_copy;
}
rwq->core_qp.event = mlx5_ib_wq_event;
rwq->ibwq.event_handler = init_attr->event_handler;
return &rwq->ibwq;
err_copy:
mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
err_user_rq:
destroy_user_rq(dev, pd, rwq, udata);
err:
kfree(rwq);
return ERR_PTR(err);
}
void mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(wq->device);
struct mlx5_ib_rwq *rwq = to_mrwq(wq);
mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
destroy_user_rq(dev, wq->pd, rwq, udata);
kfree(rwq);
}
struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
struct ib_rwq_ind_table_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(device);
struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
int sz = 1 << init_attr->log_ind_tbl_size;
struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
size_t min_resp_len;
int inlen;
int err;
int i;
u32 *in;
void *rqtc;
if (udata->inlen > 0 &&
!ib_is_udata_cleared(udata, 0,
udata->inlen))
return ERR_PTR(-EOPNOTSUPP);
if (init_attr->log_ind_tbl_size >
MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
init_attr->log_ind_tbl_size,
MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
return ERR_PTR(-EINVAL);
}
min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
if (udata->outlen && udata->outlen < min_resp_len)
return ERR_PTR(-EINVAL);
rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
if (!rwq_ind_tbl)
return ERR_PTR(-ENOMEM);
inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in) {
err = -ENOMEM;
goto err;
}
rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
for (i = 0; i < sz; i++)
MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid;
MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid);
err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
kvfree(in);
if (err)
goto err;
rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
if (udata->outlen) {
resp.response_length = offsetof(typeof(resp), response_length) +
sizeof(resp.response_length);
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err)
goto err_copy;
}
return &rwq_ind_tbl->ib_rwq_ind_tbl;
err_copy:
mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
err:
kfree(rwq_ind_tbl);
return ERR_PTR(err);
}
int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
kfree(rwq_ind_tbl);
return 0;
}
int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
u32 wq_attr_mask, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(wq->device);
struct mlx5_ib_rwq *rwq = to_mrwq(wq);
struct mlx5_ib_modify_wq ucmd = {};
size_t required_cmd_sz;
int curr_wq_state;
int wq_state;
int inlen;
int err;
void *rqc;
void *in;
required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
if (udata->inlen < required_cmd_sz)
return -EINVAL;
if (udata->inlen > sizeof(ucmd) &&
!ib_is_udata_cleared(udata, sizeof(ucmd),
udata->inlen - sizeof(ucmd)))
return -EOPNOTSUPP;
if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
return -EFAULT;
if (ucmd.comp_mask || ucmd.reserved)
return -EOPNOTSUPP;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
wq_attr->curr_wq_state : wq->state;
wq_state = (wq_attr_mask & IB_WQ_STATE) ?
wq_attr->wq_state : curr_wq_state;
if (curr_wq_state == IB_WQS_ERR)
curr_wq_state = MLX5_RQC_STATE_ERR;
if (wq_state == IB_WQS_ERR)
wq_state = MLX5_RQC_STATE_ERR;
MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid);
MLX5_SET(rqc, rqc, state, wq_state);
if (wq_attr_mask & IB_WQ_FLAGS) {
if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
mlx5_ib_dbg(dev, "VLAN offloads are not "
"supported\n");
err = -EOPNOTSUPP;
goto out;
}
MLX5_SET64(modify_rq_in, in, modify_bitmask,
MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
MLX5_SET(rqc, rqc, vsd,
(wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
}
if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
err = -EOPNOTSUPP;
goto out;
}
}
if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
u16 set_id;
set_id = mlx5_ib_get_counters_id(dev, 0);
if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
MLX5_SET64(modify_rq_in, in, modify_bitmask,
MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
MLX5_SET(rqc, rqc, counter_set_id, set_id);
} else
dev_info_once(
&dev->ib_dev.dev,
"Receive WQ counters are not supported on current FW\n");
}
err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in, inlen);
if (!err)
rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
out:
kvfree(in);
return err;
}
struct mlx5_ib_drain_cqe {
struct ib_cqe cqe;
struct completion done;
};
static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc)
{
struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe,
struct mlx5_ib_drain_cqe,
cqe);
complete(&cqe->done);
}
/* This function returns only once the drained WR was completed */
static void handle_drain_completion(struct ib_cq *cq,
struct mlx5_ib_drain_cqe *sdrain,
struct mlx5_ib_dev *dev)
{
struct mlx5_core_dev *mdev = dev->mdev;
if (cq->poll_ctx == IB_POLL_DIRECT) {
while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0)
ib_process_cq_direct(cq, -1);
return;
}
if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
struct mlx5_ib_cq *mcq = to_mcq(cq);
bool triggered = false;
unsigned long flags;
spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
/* Make sure that the CQ handler won't run if wasn't run yet */
if (!mcq->mcq.reset_notify_added)
mcq->mcq.reset_notify_added = 1;
else
triggered = true;
spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
if (triggered) {
/* Wait for any scheduled/running task to be ended */
switch (cq->poll_ctx) {
case IB_POLL_SOFTIRQ:
irq_poll_disable(&cq->iop);
irq_poll_enable(&cq->iop);
break;
case IB_POLL_WORKQUEUE:
cancel_work_sync(&cq->work);
break;
default:
WARN_ON_ONCE(1);
}
}
/* Run the CQ handler - this makes sure that the drain WR will
* be processed if wasn't processed yet.
*/
mcq->mcq.comp(&mcq->mcq, NULL);
}
wait_for_completion(&sdrain->done);
}
void mlx5_ib_drain_sq(struct ib_qp *qp)
{
struct ib_cq *cq = qp->send_cq;
struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
struct mlx5_ib_drain_cqe sdrain;
const struct ib_send_wr *bad_swr;
struct ib_rdma_wr swr = {
.wr = {
.next = NULL,
{ .wr_cqe = &sdrain.cqe, },
.opcode = IB_WR_RDMA_WRITE,
},
};
int ret;
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_core_dev *mdev = dev->mdev;
ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
return;
}
sdrain.cqe.done = mlx5_ib_drain_qp_done;
init_completion(&sdrain.done);
ret = _mlx5_ib_post_send(qp, &swr.wr, &bad_swr, true);
if (ret) {
WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
return;
}
handle_drain_completion(cq, &sdrain, dev);
}
void mlx5_ib_drain_rq(struct ib_qp *qp)
{
struct ib_cq *cq = qp->recv_cq;
struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
struct mlx5_ib_drain_cqe rdrain;
struct ib_recv_wr rwr = {};
const struct ib_recv_wr *bad_rwr;
int ret;
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_core_dev *mdev = dev->mdev;
ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
return;
}
rwr.wr_cqe = &rdrain.cqe;
rdrain.cqe.done = mlx5_ib_drain_qp_done;
init_completion(&rdrain.done);
ret = _mlx5_ib_post_recv(qp, &rwr, &bad_rwr, true);
if (ret) {
WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
return;
}
handle_drain_completion(cq, &rdrain, dev);
}
/**
* Bind a qp to a counter. If @counter is NULL then bind the qp to
* the default counter
*/
int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter)
{
struct mlx5_ib_qp *mqp = to_mqp(qp);
int err = 0;
mutex_lock(&mqp->mutex);
if (mqp->state == IB_QPS_RESET) {
qp->counter = counter;
goto out;
}
if (mqp->state == IB_QPS_RTS) {
err = __mlx5_ib_qp_set_counter(qp, counter);
if (!err)
qp->counter = counter;
goto out;
}
mqp->counter_pending = 1;
qp->counter = counter;
out:
mutex_unlock(&mqp->mutex);
return err;
}
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