diff options
| author |   Selvin Xavier <selvin.xavier@broadcom.com> | 2019-03-28 11:49:43 -0500 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-03-28 14:13:27 -0300 |
| commit | 5aa8484080115cff2da68080ad1d115613648504 (patch) | |
| tree | dfd69350691e899b676149e8851b3fa197291b9c /drivers/infiniband/hw/bnxt_re/qplib_res.h | |
| parent | IB/qib: Remove a set-but-not-used variable (diff) | |
| download | linux-dev-5aa8484080115cff2da68080ad1d115613648504.tar.xz linux-dev-5aa8484080115cff2da68080ad1d115613648504.zip | |
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: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/qplib_res.h')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/qplib_res.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h index 32cebd0f1436..30c42c92fac7 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_res.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h @@ -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); |