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| author |   Naresh Gottumukkala <bgottumukkala@emulex.com> | 2013-08-26 15:27:44 +0530 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2013-09-02 21:18:32 -0700 |
| commit | cffce99051b80c90630a9fff662a1b25e278069d (patch) | |
| tree | 58257cc50f34458649c412d5a723063d53b417a3 /drivers/infiniband/hw/ocrdma/ocrdma_hw.h | |
| parent | RDMA/ocrdma: FRMA code cleanup (diff) | |
| download | linux-dev-cffce99051b80c90630a9fff662a1b25e278069d.tar.xz linux-dev-cffce99051b80c90630a9fff662a1b25e278069d.zip | |
RDMA/ocrdma: Dont use PD 0 for userpace CQ DB
Create_CQ verb doesn't provide a PD pointer. So, until now we are
creating all (both userspace and kernel) CQ DB regions from PD0. This
will result in mmapping PD0 to applications. A rogue userspace
application can mess things up.
Also more serious issues is even the be2net NIC uses PD0.
This patch addresses this problem by:
1) Create a PD page for every userspace application when the
alloc_ucontext is called. This will be destroyed in
dealloc_ucontext.
2) All CQs for that context will use the PD allocated in ucontext.
3) The first create_PD call from application will result in returning
the PD address from its ucontext (no new PD will be created).
4) For subsecquent create_pd calls from application, we create new PDs for
the application.
Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_hw.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.h b/drivers/infiniband/hw/ocrdma/ocrdma_hw.h index cc90ac3b6d42..044db74e780a 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.h @@ -78,6 +78,11 @@ static inline void ocrdma_copy_le32_to_cpu(void *dst, void *src, u32 len) #endif } +static inline u64 ocrdma_get_db_addr(struct ocrdma_dev *dev, u32 pdid) +{ + return dev->nic_info.unmapped_db + (pdid * dev->nic_info.db_page_size); +} + int ocrdma_init_hw(struct ocrdma_dev *); void ocrdma_cleanup_hw(struct ocrdma_dev *); @@ -100,7 +105,7 @@ int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *, int fmr, u32 lkey); int ocrdma_reg_mr(struct ocrdma_dev *, struct ocrdma_hw_mr *hwmr, u32 pd_id, int acc); int ocrdma_mbx_create_cq(struct ocrdma_dev *, struct ocrdma_cq *, - int entries, int dpp_cq); + int entries, int dpp_cq, u16 pd_id); int ocrdma_mbx_destroy_cq(struct ocrdma_dev *, struct ocrdma_cq *); int ocrdma_mbx_create_qp(struct ocrdma_qp *, struct ib_qp_init_attr *attrs, |