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Commit 5aa84840 authored by Selvin Xavier's avatar Selvin Xavier Committed by Jason Gunthorpe
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RDMA/bnxt_re: Use correct sizing on buffers holding page DMA addresses 

umem->nmap is used while allocating internal buffer for storing
page DMA addresses. This causes out of bounds array access while iterating
the umem DMA-mapped SGL with umem page combining as umem->nmap can be
less than number of system pages in umem.

Use ib_umem_num_pages() instead of umem->nmap to size the page array.
Add a new structure (bnxt_qplib_sg_info) to pass sglist, npages and nmap.
Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: default avatarShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 196b4ce5
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Inline Side-by-side
Showing with 67 additions and 53 deletions
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View file @ 5aa84840
......@@ -895,8 +895,9 @@ static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd,
return PTR_ERR(umem);
qp->sumem = umem;
qplib_qp->sq.sglist = umem->sg_head.sgl;
qplib_qp->sq.nmap = umem->nmap;
qplib_qp->sq.sg_info.sglist = umem->sg_head.sgl;
qplib_qp->sq.sg_info.npages = ib_umem_num_pages(umem);
qplib_qp->sq.sg_info.nmap = umem->nmap;
qplib_qp->qp_handle = ureq.qp_handle;
if (!qp->qplib_qp.srq) {
......@@ -907,8 +908,9 @@ static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd,
if (IS_ERR(umem))
goto rqfail;
qp->rumem = umem;
qplib_qp->rq.sglist = umem->sg_head.sgl;
qplib_qp->rq.nmap = umem->nmap;
qplib_qp->rq.sg_info.sglist = umem->sg_head.sgl;
qplib_qp->rq.sg_info.npages = ib_umem_num_pages(umem);
qplib_qp->rq.sg_info.nmap = umem->nmap;
}
qplib_qp->dpi = &cntx->dpi;
......@@ -916,8 +918,7 @@ static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd,
rqfail:
ib_umem_release(qp->sumem);
qp->sumem = NULL;
qplib_qp->sq.sglist = NULL;
qplib_qp->sq.nmap = 0;
memset(&qplib_qp->sq.sg_info, 0, sizeof(qplib_qp->sq.sg_info));
return PTR_ERR(umem);
}
......@@ -1374,8 +1375,9 @@ static int bnxt_re_init_user_srq(struct bnxt_re_dev *rdev,
return PTR_ERR(umem);
srq->umem = umem;
qplib_srq->nmap = umem->nmap;
qplib_srq->sglist = umem->sg_head.sgl;
qplib_srq->sg_info.sglist = umem->sg_head.sgl;
qplib_srq->sg_info.npages = ib_umem_num_pages(umem);
qplib_srq->sg_info.nmap = umem->nmap;
qplib_srq->srq_handle = ureq.srq_handle;
qplib_srq->dpi = &cntx->dpi;
......@@ -2632,8 +2634,9 @@ struct ib_cq *bnxt_re_create_cq(struct ib_device *ibdev,
rc = PTR_ERR(cq->umem);
goto fail;
}
cq->qplib_cq.sghead = cq->umem->sg_head.sgl;
cq->qplib_cq.nmap = cq->umem->nmap;
cq->qplib_cq.sg_info.sglist = cq->umem->sg_head.sgl;
cq->qplib_cq.sg_info.npages = ib_umem_num_pages(cq->umem);
cq->qplib_cq.sg_info.nmap = cq->umem->nmap;
cq->qplib_cq.dpi = &uctx->dpi;
} else {
cq->max_cql = min_t(u32, entries, MAX_CQL_PER_POLL);
......@@ -2645,8 +2648,6 @@ struct ib_cq *bnxt_re_create_cq(struct ib_device *ibdev,
}
cq->qplib_cq.dpi = &rdev->dpi_privileged;
cq->qplib_cq.sghead = NULL;
cq->qplib_cq.nmap = 0;
}
/*
* Allocating the NQ in a round robin fashion. nq_alloc_cnt is a
......
drivers/infiniband/hw/bnxt_re/qplib_fp.c
View file @ 5aa84840
......@@ -478,7 +478,7 @@ int bnxt_qplib_alloc_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq)
nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
hwq_type = bnxt_qplib_get_hwq_type(nq->res);
if (bnxt_qplib_alloc_init_hwq(nq->pdev, &nq->hwq, NULL, 0,
if (bnxt_qplib_alloc_init_hwq(nq->pdev, &nq->hwq, NULL,
&nq->hwq.max_elements,
BNXT_QPLIB_MAX_NQE_ENTRY_SIZE, 0,
PAGE_SIZE, hwq_type))
......@@ -542,8 +542,8 @@ int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
int rc, idx;
srq->hwq.max_elements = srq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &srq->hwq, srq->sglist,
srq->nmap, &srq->hwq.max_elements,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &srq->hwq, &srq->sg_info,
&srq->hwq.max_elements,
BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
......@@ -742,7 +742,7 @@ int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
/* SQ */
sq->hwq.max_elements = sq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, NULL,
&sq->hwq.max_elements,
BNXT_QPLIB_MAX_SQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
......@@ -781,7 +781,7 @@ int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
/* RQ */
if (rq->max_wqe) {
rq->hwq.max_elements = qp->rq.max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, NULL,
&rq->hwq.max_elements,
BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
......@@ -890,8 +890,8 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
sizeof(struct sq_psn_search);
}
sq->hwq.max_elements = sq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, sq->sglist,
sq->nmap, &sq->hwq.max_elements,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, &sq->sg_info,
&sq->hwq.max_elements,
BNXT_QPLIB_MAX_SQE_ENTRY_SIZE,
psn_sz,
PAGE_SIZE, HWQ_TYPE_QUEUE);
......@@ -959,8 +959,9 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
/* RQ */
if (rq->max_wqe) {
rq->hwq.max_elements = rq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, rq->sglist,
rq->nmap, &rq->hwq.max_elements,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq,
&rq->sg_info,
&rq->hwq.max_elements,
BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
......@@ -1030,7 +1031,7 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
req_size = xrrq->max_elements *
BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
req_size &= ~(PAGE_SIZE - 1);
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL,
&xrrq->max_elements,
BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE,
0, req_size, HWQ_TYPE_CTX);
......@@ -1046,7 +1047,7 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
req_size &= ~(PAGE_SIZE - 1);
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL,
&xrrq->max_elements,
BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE,
0, req_size, HWQ_TYPE_CTX);
......@@ -1935,8 +1936,8 @@ int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
int rc;
cq->hwq.max_elements = cq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &cq->hwq, cq->sghead,
cq->nmap, &cq->hwq.max_elements,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &cq->hwq, &cq->sg_info,
&cq->hwq.max_elements,
BNXT_QPLIB_MAX_CQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
......
drivers/infiniband/hw/bnxt_re/qplib_fp.h
View file @ 5aa84840
......@@ -52,10 +52,9 @@ struct bnxt_qplib_srq {
struct bnxt_qplib_cq *cq;
struct bnxt_qplib_hwq hwq;
struct bnxt_qplib_swq *swq;
struct scatterlist *sglist;
int start_idx;
int last_idx;
u32 nmap;
struct bnxt_qplib_sg_info sg_info;
u16 eventq_hw_ring_id;
spinlock_t lock; /* protect SRQE link list */
};
......@@ -237,8 +236,7 @@ struct bnxt_qplib_swqe {
struct bnxt_qplib_q {
struct bnxt_qplib_hwq hwq;
struct bnxt_qplib_swq *swq;
struct scatterlist *sglist;
u32 nmap;
struct bnxt_qplib_sg_info sg_info;
u32 max_wqe;
u16 q_full_delta;
u16 max_sge;
......@@ -381,8 +379,7 @@ struct bnxt_qplib_cq {
u32 cnq_hw_ring_id;
struct bnxt_qplib_nq *nq;
bool resize_in_progress;
struct scatterlist *sghead;
u32 nmap;
struct bnxt_qplib_sg_info sg_info;
u64 cq_handle;
#define CQ_RESIZE_WAIT_TIME_MS 500
......
drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
View file @ 5aa84840
......@@ -569,7 +569,7 @@ int bnxt_qplib_alloc_rcfw_channel(struct pci_dev *pdev,
rcfw->pdev = pdev;
rcfw->creq.max_elements = BNXT_QPLIB_CREQE_MAX_CNT;
hwq_type = bnxt_qplib_get_hwq_type(rcfw->res);
if (bnxt_qplib_alloc_init_hwq(rcfw->pdev, &rcfw->creq, NULL, 0,
if (bnxt_qplib_alloc_init_hwq(rcfw->pdev, &rcfw->creq, NULL,
&rcfw->creq.max_elements,
BNXT_QPLIB_CREQE_UNITS,
0, PAGE_SIZE, hwq_type)) {
......@@ -584,7 +584,7 @@ int bnxt_qplib_alloc_rcfw_channel(struct pci_dev *pdev,
rcfw->cmdq.max_elements = rcfw->cmdq_depth;
if (bnxt_qplib_alloc_init_hwq
(rcfw->pdev, &rcfw->cmdq, NULL, 0,
(rcfw->pdev, &rcfw->cmdq, NULL,
&rcfw->cmdq.max_elements,
BNXT_QPLIB_CMDQE_UNITS, 0,
bnxt_qplib_cmdqe_page_size(rcfw->cmdq_depth),
......
drivers/infiniband/hw/bnxt_re/qplib_res.c
View file @ 5aa84840
......@@ -83,7 +83,8 @@ static void __free_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
}
static int __alloc_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
struct scatterlist *sghead, u32 pages, u32 pg_size)
struct scatterlist *sghead, u32 pages,
u32 nmaps, u32 pg_size)
{
struct sg_dma_page_iter sg_iter;
bool is_umem = false;
......@@ -116,7 +117,7 @@ static int __alloc_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
} else {
i = 0;
is_umem = true;
for_each_sg_dma_page (sghead, &sg_iter, pages, 0) {
for_each_sg_dma_page(sghead, &sg_iter, nmaps, 0) {
pbl->pg_map_arr[i] = sg_page_iter_dma_address(&sg_iter);
pbl->pg_arr[i] = NULL;
pbl->pg_count++;
......@@ -158,12 +159,13 @@ void bnxt_qplib_free_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq)
/* All HWQs are power of 2 in size */
int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
struct scatterlist *sghead, int nmap,
struct bnxt_qplib_sg_info *sg_info,
u32 *elements, u32 element_size, u32 aux,
u32 pg_size, enum bnxt_qplib_hwq_type hwq_type)
{
u32 pages, slots, size, aux_pages = 0, aux_size = 0;
u32 pages, maps, slots, size, aux_pages = 0, aux_size = 0;
dma_addr_t *src_phys_ptr, **dst_virt_ptr;
struct scatterlist *sghead = NULL;
int i, rc;
hwq->level = PBL_LVL_MAX;
......@@ -177,6 +179,9 @@ int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
}
size = roundup_pow_of_two(element_size);
if (sg_info)
sghead = sg_info->sglist;
if (!sghead) {
hwq->is_user = false;
pages = (slots * size) / pg_size + aux_pages;
......@@ -184,17 +189,20 @@ int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
pages++;
if (!pages)
return -EINVAL;
maps = 0;
} else {
hwq->is_user = true;
pages = nmap;
pages = sg_info->npages;
maps = sg_info->nmap;
}
/* Alloc the 1st memory block; can be a PDL/PTL/PBL */
if (sghead && (pages == MAX_PBL_LVL_0_PGS))
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_0], sghead,
pages, pg_size);
pages, maps, pg_size);
else
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_0], NULL, 1, pg_size);
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_0], NULL,
1, 0, pg_size);
if (rc)
goto fail;
......@@ -204,7 +212,8 @@ int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
if (pages > MAX_PBL_LVL_1_PGS) {
/* 2 levels of indirection */
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_1], NULL,
MAX_PBL_LVL_1_PGS_FOR_LVL_2, pg_size);
MAX_PBL_LVL_1_PGS_FOR_LVL_2,
0, pg_size);
if (rc)
goto fail;
/* Fill in lvl0 PBL */
......@@ -217,7 +226,7 @@ int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
hwq->level = PBL_LVL_1;
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_2], sghead,
pages, pg_size);
pages, maps, pg_size);
if (rc)
goto fail;
......@@ -246,7 +255,7 @@ int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
/* 1 level of indirection */
rc = __alloc_pbl(pdev, &hwq->pbl[PBL_LVL_1], sghead,
pages, pg_size);
pages, maps, pg_size);
if (rc)
goto fail;
/* Fill in lvl0 PBL */
......@@ -339,7 +348,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* QPC Tables */
ctx->qpc_tbl.max_elements = ctx->qpc_count;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->qpc_tbl, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->qpc_tbl, NULL,
&ctx->qpc_tbl.max_elements,
BNXT_QPLIB_MAX_QP_CTX_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_CTX);
......@@ -348,7 +357,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* MRW Tables */
ctx->mrw_tbl.max_elements = ctx->mrw_count;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->mrw_tbl, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->mrw_tbl, NULL,
&ctx->mrw_tbl.max_elements,
BNXT_QPLIB_MAX_MRW_CTX_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_CTX);
......@@ -357,7 +366,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* SRQ Tables */
ctx->srqc_tbl.max_elements = ctx->srqc_count;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->srqc_tbl, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->srqc_tbl, NULL,
&ctx->srqc_tbl.max_elements,
BNXT_QPLIB_MAX_SRQ_CTX_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_CTX);
......@@ -366,7 +375,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* CQ Tables */
ctx->cq_tbl.max_elements = ctx->cq_count;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->cq_tbl, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->cq_tbl, NULL,
&ctx->cq_tbl.max_elements,
BNXT_QPLIB_MAX_CQ_CTX_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_CTX);
......@@ -375,7 +384,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* TQM Buffer */
ctx->tqm_pde.max_elements = 512;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tqm_pde, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tqm_pde, NULL,
&ctx->tqm_pde.max_elements, sizeof(u64),
0, PAGE_SIZE, HWQ_TYPE_CTX);
if (rc)
......@@ -386,7 +395,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
continue;
ctx->tqm_tbl[i].max_elements = ctx->qpc_count *
ctx->tqm_count[i];
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tqm_tbl[i], NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tqm_tbl[i], NULL,
&ctx->tqm_tbl[i].max_elements, 1,
0, PAGE_SIZE, HWQ_TYPE_CTX);
if (rc)
......@@ -424,7 +433,7 @@ int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
/* TIM Buffer */
ctx->tim_tbl.max_elements = ctx->qpc_count * 16;
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tim_tbl, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(pdev, &ctx->tim_tbl, NULL,
&ctx->tim_tbl.max_elements, 1,
0, PAGE_SIZE, HWQ_TYPE_CTX);
if (rc)
......
drivers/infiniband/hw/bnxt_re/qplib_res.h
View file @ 5aa84840
......@@ -219,6 +219,12 @@ static inline u8 bnxt_qplib_get_ring_type(struct bnxt_qplib_chip_ctx *cctx)
RING_ALLOC_REQ_RING_TYPE_ROCE_CMPL;
}
struct bnxt_qplib_sg_info {
struct scatterlist *sglist;
u32 nmap;
u32 npages;
};
#define to_bnxt_qplib(ptr, type, member) \
container_of(ptr, type, member)
......@@ -227,7 +233,7 @@ struct bnxt_qplib_dev_attr;
void bnxt_qplib_free_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq);
int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
struct scatterlist *sl, int nmap, u32 *elements,
struct bnxt_qplib_sg_info *sg_info, u32 *elements,
u32 elements_per_page, u32 aux, u32 pg_size,
enum bnxt_qplib_hwq_type hwq_type);
void bnxt_qplib_get_guid(u8 *dev_addr, u8 *guid);
......
drivers/infiniband/hw/bnxt_re/qplib_sp.c
View file @ 5aa84840
......@@ -684,7 +684,7 @@ int bnxt_qplib_reg_mr(struct bnxt_qplib_res *res, struct bnxt_qplib_mrw *mr,
mr->hwq.max_elements = pages;
/* Use system PAGE_SIZE */
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &mr->hwq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &mr->hwq, NULL,
&mr->hwq.max_elements,
PAGE_SIZE, 0, PAGE_SIZE,
HWQ_TYPE_CTX);
......@@ -754,7 +754,7 @@ int bnxt_qplib_alloc_fast_reg_page_list(struct bnxt_qplib_res *res,
return -ENOMEM;
frpl->hwq.max_elements = pages;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &frpl->hwq, NULL, 0,
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &frpl->hwq, NULL,
&frpl->hwq.max_elements, PAGE_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_CTX);
if (!rc)
......
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