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gfiber / kernel / quantenna / eae3b04165f650ed5521089f8ad8c29a4bd8fbea / . / drivers / infiniband / hw / mlx5 / qp.c
blob: ce0a7ab35a227c569deae7f6b322b4c84eb5dcec [file] [log] [blame]
/*
* 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 "mlx5_ib.h"
#include "user.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_CACHE_LINE_SIZE = 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];
};
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);
}
static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
{
return mlx5_buf_offset(&qp->buf, offset);
}
static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
{
return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
}
void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
{
return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
}
/**
* mlx5_ib_read_user_wqe() - Copy a user-space WQE to kernel space.
*
* @qp: QP to copy from.
* @send: copy from the send queue when non-zero, use the receive queue
* otherwise.
* @wqe_index: index to start copying from. For send work queues, the
* wqe_index is in units of MLX5_SEND_WQE_BB.
* For receive work queue, it is the number of work queue
* element in the queue.
* @buffer: destination buffer.
* @length: maximum number of bytes to copy.
*
* Copies at least a single WQE, but may copy more data.
*
* Return: the number of bytes copied, or an error code.
*/
int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
void *buffer, u32 length,
struct mlx5_ib_qp_base *base)
{
struct ib_device *ibdev = qp->ibqp.device;
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_wq *wq = send ? &qp->sq : &qp->rq;
size_t offset;
size_t wq_end;
struct ib_umem *umem = base->ubuffer.umem;
u32 first_copy_length;
int wqe_length;
int ret;
if (wq->wqe_cnt == 0) {
mlx5_ib_dbg(dev, "mlx5_ib_read_user_wqe for a QP with wqe_cnt == 0. qp_type: 0x%x\n",
qp->ibqp.qp_type);
return -EINVAL;
}
offset = wq->offset + ((wqe_index % wq->wqe_cnt) << wq->wqe_shift);
wq_end = wq->offset + (wq->wqe_cnt << wq->wqe_shift);
if (send && length < sizeof(struct mlx5_wqe_ctrl_seg))
return -EINVAL;
if (offset > umem->length ||
(send && offset + sizeof(struct mlx5_wqe_ctrl_seg) > umem->length))
return -EINVAL;
first_copy_length = min_t(u32, offset + length, wq_end) - offset;
ret = ib_umem_copy_from(buffer, umem, offset, first_copy_length);
if (ret)
return ret;
if (send) {
struct mlx5_wqe_ctrl_seg *ctrl = buffer;
int ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
wqe_length = ds * MLX5_WQE_DS_UNITS;
} else {
wqe_length = 1 << wq->wqe_shift;
}
if (wqe_length <= first_copy_length)
return first_copy_length;
ret = ib_umem_copy_from(buffer + first_copy_length, umem, wq->offset,
wqe_length - first_copy_length);
if (ret)
return ret;
return wqe_length;
}
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;
qp->rq.wqe_shift = ucmd->rq_wqe_shift;
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));
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_SIGNATURE_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 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;
if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
qp->signature_en = true;
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, "wqe count(%d) exceeds limits(%d)\n",
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 = attr->cap.max_send_sge;
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 && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
ucmd->sq_wqe_count, 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) {
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;
}
static int first_med_uuar(void)
{
return 1;
}
static int next_uuar(int n)
{
n++;
while (((n % 4) & 2))
n++;
return n;
}
static int num_med_uuar(struct mlx5_uuar_info *uuari)
{
int n;
n = uuari->num_uars * MLX5_NON_FP_BF_REGS_PER_PAGE -
uuari->num_low_latency_uuars - 1;
return n >= 0 ? n : 0;
}
static int max_uuari(struct mlx5_uuar_info *uuari)
{
return uuari->num_uars * 4;
}
static int first_hi_uuar(struct mlx5_uuar_info *uuari)
{
int med;
int i;
int t;
med = num_med_uuar(uuari);
for (t = 0, i = first_med_uuar();; i = next_uuar(i)) {
t++;
if (t == med)
return next_uuar(i);
}
return 0;
}
static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari)
{
int i;
for (i = first_hi_uuar(uuari); i < max_uuari(uuari); i = next_uuar(i)) {
if (!test_bit(i, uuari->bitmap)) {
set_bit(i, uuari->bitmap);
uuari->count[i]++;
return i;
}
}
return -ENOMEM;
}
static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari)
{
int minidx = first_med_uuar();
int i;
for (i = first_med_uuar(); i < first_hi_uuar(uuari); i = next_uuar(i)) {
if (uuari->count[i] < uuari->count[minidx])
minidx = i;
}
uuari->count[minidx]++;
return minidx;
}
static int alloc_uuar(struct mlx5_uuar_info *uuari,
enum mlx5_ib_latency_class lat)
{
int uuarn = -EINVAL;
mutex_lock(&uuari->lock);
switch (lat) {
case MLX5_IB_LATENCY_CLASS_LOW:
uuarn = 0;
uuari->count[uuarn]++;
break;
case MLX5_IB_LATENCY_CLASS_MEDIUM:
if (uuari->ver < 2)
uuarn = -ENOMEM;
else
uuarn = alloc_med_class_uuar(uuari);
break;
case MLX5_IB_LATENCY_CLASS_HIGH:
if (uuari->ver < 2)
uuarn = -ENOMEM;
else
uuarn = alloc_high_class_uuar(uuari);
break;
case MLX5_IB_LATENCY_CLASS_FAST_PATH:
uuarn = 2;
break;
}
mutex_unlock(&uuari->lock);
return uuarn;
}
static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
{
clear_bit(uuarn, uuari->bitmap);
--uuari->count[uuarn];
}
static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
{
clear_bit(uuarn, uuari->bitmap);
--uuari->count[uuarn];
}
static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn)
{
int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
int high_uuar = nuuars - uuari->num_low_latency_uuars;
mutex_lock(&uuari->lock);
if (uuarn == 0) {
--uuari->count[uuarn];
goto out;
}
if (uuarn < high_uuar) {
free_med_class_uuar(uuari, uuarn);
goto out;
}
free_high_class_uuar(uuari, uuarn);
out:
mutex_unlock(&uuari->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 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 int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
{
return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
}
static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev,
struct ib_pd *pd,
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(pd->uobject->context, 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, 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 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,
struct mlx5_create_qp_mbox_in **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;
int npages;
u32 offset = 0;
int uuarn;
int ncont = 0;
int err;
err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
if (err) {
mlx5_ib_dbg(dev, "copy failed\n");
return err;
}
context = to_mucontext(pd->uobject->context);
/*
* TBD: should come from the verbs when we have the API
*/
if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
/* In CROSS_CHANNEL CQ and QP must use the same UAR */
uuarn = MLX5_CROSS_CHANNEL_UUAR;
else {
uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH);
if (uuarn < 0) {
mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n");
mlx5_ib_dbg(dev, "reverting to medium latency\n");
uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_MEDIUM);
if (uuarn < 0) {
mlx5_ib_dbg(dev, "failed to allocate medium latency UUAR\n");
mlx5_ib_dbg(dev, "reverting to high latency\n");
uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW);
if (uuarn < 0) {
mlx5_ib_warn(dev, "uuar allocation failed\n");
return uuarn;
}
}
}
}
uar_index = uuarn_to_uar_index(&context->uuari, uuarn);
mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index);
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_uuar;
if (ucmd.buf_addr && ubuffer->buf_size) {
ubuffer->buf_addr = ucmd.buf_addr;
err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr,
ubuffer->buf_size,
&ubuffer->umem, &npages, &page_shift,
&ncont, &offset);
if (err)
goto err_uuar;
} else {
ubuffer->umem = NULL;
}
*inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
*in = mlx5_vzalloc(*inlen);
if (!*in) {
err = -ENOMEM;
goto err_umem;
}
if (ubuffer->umem)
mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift,
(*in)->pas, 0);
(*in)->ctx.log_pg_sz_remote_qpn =
cpu_to_be32((page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
(*in)->ctx.params2 = cpu_to_be32(offset << 6);
(*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
resp->uuar_index = uuarn;
qp->uuarn = uuarn;
err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
if (err) {
mlx5_ib_dbg(dev, "map failed\n");
goto err_free;
}
err = ib_copy_to_udata(udata, resp, 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:
if (ubuffer->umem)
ib_umem_release(ubuffer->umem);
err_uuar:
free_uuar(&context->uuari, uuarn);
return err;
}
static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp,
struct mlx5_ib_qp_base *base)
{
struct mlx5_ib_ucontext *context;
context = to_mucontext(pd->uobject->context);
mlx5_ib_db_unmap_user(context, &qp->db);
if (base->ubuffer.umem)
ib_umem_release(base->ubuffer.umem);
free_uuar(&context->uuari, qp->uuarn);
}
static int create_kernel_qp(struct mlx5_ib_dev *dev,
struct ib_qp_init_attr *init_attr,
struct mlx5_ib_qp *qp,
struct mlx5_create_qp_mbox_in **in, int *inlen,
struct mlx5_ib_qp_base *base)
{
enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW;
struct mlx5_uuar_info *uuari;
int uar_index;
int uuarn;
int err;
uuari = &dev->mdev->priv.uuari;
if (init_attr->create_flags & ~(IB_QP_CREATE_SIGNATURE_EN |
IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
IB_QP_CREATE_IPOIB_UD_LSO |
mlx5_ib_create_qp_sqpn_qp1()))
return -EINVAL;
if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
lc = MLX5_IB_LATENCY_CLASS_FAST_PATH;
uuarn = alloc_uuar(uuari, lc);
if (uuarn < 0) {
mlx5_ib_dbg(dev, "\n");
return -ENOMEM;
}
qp->bf = &uuari->bfs[uuarn];
uar_index = qp->bf->uar->index;
err = calc_sq_size(dev, init_attr, qp);
if (err < 0) {
mlx5_ib_dbg(dev, "err %d\n", err);
goto err_uuar;
}
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_buf_alloc(dev->mdev, base->ubuffer.buf_size, &qp->buf);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
goto err_uuar;
}
qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
*inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages;
*in = mlx5_vzalloc(*inlen);
if (!*in) {
err = -ENOMEM;
goto err_buf;
}
(*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
(*in)->ctx.log_pg_sz_remote_qpn =
cpu_to_be32((qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
/* Set "fast registration enabled" for all kernel QPs */
(*in)->ctx.params1 |= cpu_to_be32(1 << 11);
(*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4);
if (init_attr->create_flags & mlx5_ib_create_qp_sqpn_qp1()) {
(*in)->ctx.deth_sqpn = cpu_to_be32(1);
qp->flags |= MLX5_IB_QP_SQPN_QP1;
}
mlx5_fill_page_array(&qp->buf, (*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 = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
qp->sq.wqe_head = kmalloc(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:
mlx5_db_free(dev->mdev, &qp->db);
kfree(qp->sq.wqe_head);
kfree(qp->sq.w_list);
kfree(qp->sq.wrid);
kfree(qp->sq.wr_data);
kfree(qp->rq.wrid);
err_free:
kvfree(*in);
err_buf:
mlx5_buf_free(dev->mdev, &qp->buf);
err_uuar:
free_uuar(&dev->mdev->priv.uuari, uuarn);
return err;
}
static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
mlx5_db_free(dev->mdev, &qp->db);
kfree(qp->sq.wqe_head);
kfree(qp->sq.w_list);
kfree(qp->sq.wrid);
kfree(qp->sq.wr_data);
kfree(qp->rq.wrid);
mlx5_buf_free(dev->mdev, &qp->buf);
free_uuar(&dev->mdev->priv.uuari, qp->bf->uuarn);
}
static __be32 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 == IB_QPT_XRC_INI))
return cpu_to_be32(MLX5_SRQ_RQ);
else if (!qp->has_rq)
return cpu_to_be32(MLX5_ZERO_LEN_RQ);
else
return cpu_to_be32(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)
return 1;
return 0;
}
static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
struct mlx5_ib_sq *sq, u32 tdn)
{
u32 in[MLX5_ST_SZ_DW(create_tis_in)];
void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
memset(in, 0, sizeof(in));
MLX5_SET(tisc, tisc, transport_domain, tdn);
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)
{
mlx5_core_destroy_tis(dev->mdev, sq->tisn);
}
static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
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, pd, 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 = mlx5_vzalloc(inlen);
if (!in) {
err = -ENOMEM;
goto err_umem;
}
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
MLX5_SET(sqc, sqc, flush_in_error_en, 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);
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)
{
mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
ib_umem_release(sq->ubuffer.umem);
}
static int 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)
{
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);
int inlen;
int err;
u32 rq_pas_size = get_rq_pas_size(qpc);
inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
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);
MLX5_SET(wq, wq, end_padding_mode,
MLX5_GET(qpc, qpc, end_padding_mode));
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 int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq, u32 tdn)
{
u32 *in;
void *tirc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(create_tir_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
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);
err = mlx5_core_create_tir(dev->mdev, in, inlen, &rq->tirn);
kvfree(in);
return err;
}
static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
struct mlx5_ib_rq *rq)
{
mlx5_core_destroy_tir(dev->mdev, rq->tirn);
}
static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
struct mlx5_create_qp_mbox_in *in,
struct ib_pd *pd)
{
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 ib_uobject *uobj = pd->uobject;
struct ib_ucontext *ucontext = uobj->context;
struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
int err;
u32 tdn = mucontext->tdn;
if (qp->sq.wqe_cnt) {
err = create_raw_packet_qp_tis(dev, sq, tdn);
if (err)
return err;
err = create_raw_packet_qp_sq(dev, sq, in, pd);
if (err)
goto err_destroy_tis;
sq->base.container_mibqp = qp;
}
if (qp->rq.wqe_cnt) {
rq->base.container_mibqp = qp;
err = create_raw_packet_qp_rq(dev, rq, in);
if (err)
goto err_destroy_sq;
err = create_raw_packet_qp_tir(dev, rq, tdn);
if (err)
goto err_destroy_rq;
}
qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
rq->base.mqp.qpn;
return 0;
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);
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);
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);
}
}
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 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;
struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_ib_qp_base *base;
struct mlx5_ib_create_qp_resp resp;
struct mlx5_create_qp_mbox_in *in;
struct mlx5_ib_create_qp ucmd;
int inlen = sizeof(*in);
int err;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
void *qpc;
base = init_attr->qp_type == IB_QPT_RAW_PACKET ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
if (init_attr->qp_type != IB_QPT_RAW_PACKET)
mlx5_ib_odp_create_qp(qp);
mutex_init(&qp->mutex);
spin_lock_init(&qp->sq.lock);
spin_lock_init(&qp->rq.lock);
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 (pd && pd->uobject) {
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
mlx5_ib_dbg(dev, "copy failed\n");
return -EFAULT;
}
err = get_qp_user_index(to_mucontext(pd->uobject->context),
&ucmd, udata->inlen, &uidx);
if (err)
return err;
qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
} else {
qp->wq_sig = !!wq_signature;
}
qp->has_rq = qp_has_rq(init_attr);
err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
qp, (pd && pd->uobject) ? &ucmd : NULL);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
return err;
}
if (pd) {
if (pd->uobject) {
__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_create_qp_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 = mlx5_vzalloc(sizeof(*in));
if (!in)
return -ENOMEM;
qp->create_type = MLX5_QP_EMPTY;
}
if (is_sqp(init_attr->qp_type))
qp->port = init_attr->port_num;
in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 |
MLX5_QP_PM_MIGRATED << 11);
if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn);
else
in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE);
if (qp->wq_sig)
in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG);
if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_BLOCK_MCAST);
if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_MASTER);
if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_SLAVE_SEND);
if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_SLAVE_RECV);
if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
int rcqe_sz;
int scqe_sz;
rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
if (rcqe_sz == 128)
in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE;
else
in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE;
if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
if (scqe_sz == 128)
in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE;
else
in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE;
}
}
if (qp->rq.wqe_cnt) {
in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4);
in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3;
}
in->ctx.rq_type_srqn = get_rx_type(qp, init_attr);
if (qp->sq.wqe_cnt)
in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11);
else
in->ctx.sq_crq_size |= cpu_to_be16(0x8000);
/* Set default resources */
switch (init_attr->qp_type) {
case IB_QPT_XRC_TGT:
in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn);
break;
case IB_QPT_XRC_INI:
in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
break;
default:
if (init_attr->srq) {
in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn);
in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn);
} else {
in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
in->ctx.rq_type_srqn |=
cpu_to_be32(to_msrq(devr->s1)->msrq.srqn);
}
}
if (init_attr->send_cq)
in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn);
if (init_attr->recv_cq)
in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn);
in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma);
if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) {
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
/* 0xffffff means we ask to work with cqe version 0 */
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)) {
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
qp->flags |= MLX5_IB_QP_LSO;
}
if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
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, pd);
} 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;
return 0;
err_create:
if (qp->create_type == MLX5_QP_USER)
destroy_qp_user(pd, qp, base);
else if (qp->create_type == MLX5_QP_KERNEL)
destroy_qp_kernel(dev, qp);
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_irq(&send_cq->lock);
spin_lock_nested(&recv_cq->lock,
SINGLE_DEPTH_NESTING);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
spin_lock_irq(&send_cq->lock);
__acquire(&recv_cq->lock);
} else {
spin_lock_irq(&recv_cq->lock);
spin_lock_nested(&send_cq->lock,
SINGLE_DEPTH_NESTING);
}
} else {
spin_lock_irq(&send_cq->lock);
__acquire(&recv_cq->lock);
}
} else if (recv_cq) {
spin_lock_irq(&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_irq(&send_cq->lock);
} else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
__release(&recv_cq->lock);
spin_unlock_irq(&send_cq->lock);
} else {
spin_unlock(&send_cq->lock);
spin_unlock_irq(&recv_cq->lock);
}
} else {
__release(&recv_cq->lock);
spin_unlock_irq(&send_cq->lock);
}
} else if (recv_cq) {
__release(&send_cq->lock);
spin_unlock_irq(&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(struct mlx5_ib_qp *qp,
struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
{
switch (qp->ibqp.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 = to_mcq(qp->ibqp.send_cq);
*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 = to_mcq(qp->ibqp.send_cq);
*recv_cq = to_mcq(qp->ibqp.recv_cq);
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,
u16 operation);
static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
struct mlx5_ib_cq *send_cq, *recv_cq;
struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
struct mlx5_modify_qp_mbox_in *in;
int err;
base = qp->ibqp.qp_type == IB_QPT_RAW_PACKET ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
in = kzalloc(sizeof(*in), GFP_KERNEL);
if (!in)
return;
if (qp->state != IB_QPS_RESET) {
if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET) {
mlx5_ib_qp_disable_pagefaults(qp);
err = mlx5_core_qp_modify(dev->mdev,
MLX5_CMD_OP_2RST_QP, in, 0,
&base->mqp);
} else {
err = modify_raw_packet_qp(dev, qp,
MLX5_CMD_OP_2RST_QP);
}
if (err)
mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
base->mqp.qpn);
}
get_cqs(qp, &send_cq, &recv_cq);
if (qp->create_type == MLX5_QP_KERNEL) {
mlx5_ib_lock_cqs(send_cq, recv_cq);
__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);
}
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
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);
}
kfree(in);
if (qp->create_type == MLX5_QP_KERNEL)
destroy_qp_kernel(dev, qp);
else if (qp->create_type == MLX5_QP_USER)
destroy_qp_user(&get_pd(qp)->ibpd, qp, base);
}
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_MAX:
default:
return "Invalid QP type";
}
}
struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev;
struct mlx5_ib_qp *qp;
u16 xrcdn = 0;
int err;
if (pd) {
dev = to_mdev(pd->device);
if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
if (!pd->uobject) {
mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
return ERR_PTR(-EINVAL);
} else if (!to_mucontext(pd->uobject->context)->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);
}
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:
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,
to_mcq(init_attr->recv_cq)->mcq.cqn,
to_mcq(init_attr->send_cq)->mcq.cqn);
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);
}
return &qp->ibqp;
}
int mlx5_ib_destroy_qp(struct ib_qp *qp)
{
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);
destroy_qp_common(dev, mqp);
kfree(mqp);
return 0;
}
static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
int attr_mask)
{
u32 hw_access_flags = 0;
u8 dest_rd_atomic;
u32 access_flags;
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)
hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
if (access_flags & IB_ACCESS_REMOTE_WRITE)
hw_access_flags |= MLX5_QP_BIT_RWE;
return cpu_to_be32(hw_access_flags);
}
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;
} else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {
return -EINVAL;
} else {
while (rate != IB_RATE_2_5_GBPS &&
!(1 << (rate + MLX5_STAT_RATE_OFFSET) &
MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
--rate;
}
return rate + MLX5_STAT_RATE_OFFSET;
}
static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
struct mlx5_ib_sq *sq, u8 sl)
{
void *in;
void *tisc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
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 mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct ib_ah_attr *ah,
struct mlx5_qp_path *path, u8 port, int attr_mask,
u32 path_flags, const struct ib_qp_attr *attr,
bool alt)
{
enum rdma_link_layer ll = rdma_port_get_link_layer(&dev->ib_dev, port);
int err;
if (attr_mask & IB_QP_PKEY_INDEX)
path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
attr->pkey_index);
if (ah->ah_flags & IB_AH_GRH) {
if (ah->grh.sgid_index >=
dev->mdev->port_caps[port - 1].gid_table_len) {
pr_err("sgid_index (%u) too large. max is %d\n",
ah->grh.sgid_index,
dev->mdev->port_caps[port - 1].gid_table_len);
return -EINVAL;
}
}
if (ll == IB_LINK_LAYER_ETHERNET) {
if (!(ah->ah_flags & IB_AH_GRH))
return -EINVAL;
memcpy(path->rmac, ah->dmac, sizeof(ah->dmac));
path->udp_sport = mlx5_get_roce_udp_sport(dev, port,
ah->grh.sgid_index);
path->dci_cfi_prio_sl = (ah->sl & 0x7) << 4;
} 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(ah->dlid);
path->grh_mlid = ah->src_path_bits & 0x7f;
if (ah->ah_flags & IB_AH_GRH)
path->grh_mlid |= 1 << 7;
path->dci_cfi_prio_sl = ah->sl & 0xf;
}
if (ah->ah_flags & IB_AH_GRH) {
path->mgid_index = ah->grh.sgid_index;
path->hop_limit = ah->grh.hop_limit;
path->tclass_flowlabel =
cpu_to_be32((ah->grh.traffic_class << 20) |
(ah->grh.flow_label));
memcpy(path->rgid, ah->grh.dgid.raw, 16);
}
err = ib_rate_to_mlx5(dev, ah->static_rate);
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,
ah->sl & 0xf);
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_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_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_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,
},
},
};
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_core_dev *dev,
struct mlx5_ib_rq *rq, int new_state)
{
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
MLX5_SET(modify_rq_in, in, rq_state, rq->state);
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(rqc, rqc, state, new_state);
err = mlx5_core_modify_rq(dev, 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)
{
void *in;
void *sqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
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);
err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
if (err)
goto out;
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,
u16 operation)
{
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 rq_state;
int sq_state;
int err;
switch (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_INIT2INIT_QP:
case MLX5_CMD_OP_INIT2RTR_QP:
case MLX5_CMD_OP_RTR2RTS_QP:
case MLX5_CMD_OP_RTS2RTS_QP:
/* Nothing to do here... */
return 0;
default:
WARN_ON(1);
return -EINVAL;
}
if (qp->rq.wqe_cnt) {
err = modify_raw_packet_qp_rq(dev->mdev, rq, rq_state);
if (err)
return err;
}
if (qp->sq.wqe_cnt)
return modify_raw_packet_qp_sq(dev->mdev, sq, sq_state);
return 0;
}
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)
{
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_modify_qp_mbox_in *in;
struct mlx5_ib_pd *pd;
enum mlx5_qp_state mlx5_cur, mlx5_new;
enum mlx5_qp_optpar optpar;
int sqd_event;
int mlx5_st;
int err;
u16 op;
in = kzalloc(sizeof(*in), GFP_KERNEL);
if (!in)
return -ENOMEM;
context = &in->ctx;
err = to_mlx5_st(ibqp->qp_type);
if (err < 0) {
mlx5_ib_dbg(dev, "unsupported qp type %d\n", ibqp->qp_type);
goto out;
}
context->flags = cpu_to_be32(err << 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 (is_sqp(ibqp->qp_type)) {
context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
} else if (ibqp->qp_type == IB_QPT_UD ||
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;
}
pd = get_pd(qp);
get_cqs(qp, &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))
context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
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_RTS && new_state == IB_QPS_SQD &&
attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
sqd_event = 1;
else
sqd_event = 0;
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);
mlx5_st = to_mlx5_st(ibqp->qp_type);
if (mlx5_st < 0)
goto out;
/* If moving to a reset or error state, we must disable page faults on
* this QP and flush all current page faults. Otherwise a stale page
* fault may attempt to work on this QP after it is reset and moved
* again to RTS, and may cause the driver and the device to get out of
* sync. */
if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR &&
(new_state == IB_QPS_RESET || new_state == IB_QPS_ERR) &&
(qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
mlx5_ib_qp_disable_pagefaults(qp);
if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
!optab[mlx5_cur][mlx5_new])
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];
in->optparam = cpu_to_be32(optpar);
if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET)
err = modify_raw_packet_qp(dev, qp, op);
else
err = mlx5_core_qp_modify(dev->mdev, op, in, sqd_event,
&base->mqp);
if (err)
goto out;
if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT &&
(qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
mlx5_ib_qp_enable_pagefaults(qp);
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) {
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;
qp->sq.last_poll = 0;
qp->db.db[MLX5_RCV_DBR] = 0;
qp->db.db[MLX5_SND_DBR] = 0;
}
out:
kfree(in);
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);
enum ib_qp_type qp_type;
enum ib_qp_state cur_state, new_state;
int err = -EINVAL;
int port;
enum rdma_link_layer ll = IB_LINK_LAYER_UNSPECIFIED;
if (unlikely(ibqp->qp_type == IB_QPT_GSI))
return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
IB_QPT_GSI : ibqp->qp_type;
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;
ll = dev->ib_dev.get_link_layer(&dev->ib_dev, port);
}
if (qp_type != MLX5_IB_QPT_REG_UMR &&
!ib_modify_qp_is_ok(cur_state, new_state, qp_type, attr_mask, ll)) {
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;
}
if ((attr_mask & IB_QP_PORT) &&
(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);
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);
out:
mutex_unlock(&qp->mutex);
return err;
}
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(struct mlx5_wqe_eth_seg *eseg,
struct ib_send_wr *wr, void *qend,
struct mlx5_ib_qp *qp, int *size)
{
void *seg = eseg;
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;
seg += sizeof(struct mlx5_wqe_eth_seg);
*size += sizeof(struct mlx5_wqe_eth_seg) / 16;
if (wr->opcode == IB_WR_LSO) {
struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
int size_of_inl_hdr_start = sizeof(eseg->inline_hdr_start);
u64 left, leftlen, copysz;
void *pdata = ud_wr->header;
left = ud_wr->hlen;
eseg->mss = cpu_to_be16(ud_wr->mss);
eseg->inline_hdr_sz = cpu_to_be16(left);
/*
* check if there is space till the end of queue, if yes,
* copy all in one shot, otherwise copy till the end of queue,
* rollback and than the copy the left
*/
leftlen = qend - (void *)eseg->inline_hdr_start;
copysz = min_t(u64, leftlen, left);
memcpy(seg - size_of_inl_hdr_start, pdata, copysz);
if (likely(copysz > size_of_inl_hdr_start)) {
seg += ALIGN(copysz - size_of_inl_hdr_start, 16);
*size += ALIGN(copysz - size_of_inl_hdr_start, 16) / 16;
}
if (unlikely(copysz < left)) { /* the last wqe in the queue */
seg = mlx5_get_send_wqe(qp, 0);
left -= copysz;
pdata += copysz;
memcpy(seg, pdata, left);
seg += ALIGN(left, 16);
*size += ALIGN(left, 16) / 16;
}
}
return seg;
}
static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
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 __be16 get_klm_octo(int npages)
{
return cpu_to_be16(ALIGN(npages, 8) / 2);
}
static __be64 frwr_mkey_mask(void)
{
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_A |
MLX5_MKEY_MASK_SMALL_FENCE |
MLX5_MKEY_MASK_FREE;
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)
{
int ndescs = mr->ndescs;
memset(umr, 0, sizeof(*umr));
if (mr->access_mode == MLX5_ACCESS_MODE_KLM)
/* KLMs take twice the size of MTTs */
ndescs *= 2;
umr->flags = MLX5_UMR_CHECK_NOT_FREE;
umr->klm_octowords = get_klm_octo(ndescs);
umr->mkey_mask = frwr_mkey_mask();
}
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 = 1 << 7;
}
static __be64 get_umr_reg_mr_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_LEN |
MLX5_MKEY_MASK_PAGE_SIZE |
MLX5_MKEY_MASK_START_ADDR |
MLX5_MKEY_MASK_PD |
MLX5_MKEY_MASK_LR |
MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW |
MLX5_MKEY_MASK_A |
MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_unreg_mr_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_update_mtt_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 |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_update_access_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW |
MLX5_MKEY_MASK_A |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static __be64 get_umr_update_pd_mask(void)
{
u64 result;
result = MLX5_MKEY_MASK_PD |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_FREE;
return cpu_to_be64(result);
}
static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
struct ib_send_wr *wr)
{
struct mlx5_umr_wr *umrwr = umr_wr(wr);
memset(umr, 0, sizeof(*umr));
if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
umr->flags = MLX5_UMR_CHECK_FREE; /* fail if free */
else
umr->flags = MLX5_UMR_CHECK_NOT_FREE; /* fail if not free */
if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) {
umr->klm_octowords = get_klm_octo(umrwr->npages);
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT) {
umr->mkey_mask = get_umr_update_mtt_mask();
umr->bsf_octowords = get_klm_octo(umrwr->target.offset);
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_ACCESS)
umr->mkey_mask |= get_umr_update_access_mask();
if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD)
umr->mkey_mask |= get_umr_update_pd_mask();
if (!umr->mkey_mask)
umr->mkey_mask = get_umr_reg_mr_mask();
} else {
umr->mkey_mask = get_umr_unreg_mr_mask();
}
if (!wr->num_sge)
umr->flags |= MLX5_UMR_INLINE;
}
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, 8) >> 1;
memset(seg, 0, sizeof(*seg));
if (mr->access_mode == MLX5_ACCESS_MODE_MTT)
seg->log2_page_size = ilog2(mr->ibmr.page_size);
else if (mr->access_mode == MLX5_ACCESS_MODE_KLM)
/* 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, struct ib_send_wr *wr)
{
struct mlx5_umr_wr *umrwr = umr_wr(wr);
memset(seg, 0, sizeof(*seg));
if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) {
seg->status = MLX5_MKEY_STATUS_FREE;
return;
}
seg->flags = convert_access(umrwr->access_flags);
if (!(wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT)) {
if (umrwr->pd)
seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
seg->start_addr = cpu_to_be64(umrwr->target.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;
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(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, struct ib_send_wr *wr,
void *wqe, int *sz)
{
struct mlx5_wqe_inline_seg *seg;