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authorNaresh Gottumukkala <bgottumukkala@emulex.com>2013-08-26 15:27:44 +0530
committerRoland Dreier <roland@purestorage.com>2013-09-02 21:18:32 -0700
commitcffce99051b80c90630a9fff662a1b25e278069d (patch)
tree58257cc50f34458649c412d5a723063d53b417a3 /drivers/infiniband/hw/ocrdma/ocrdma_hw.h
parentRDMA/ocrdma: FRMA code cleanup (diff)
downloadlinux-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 'drivers/infiniband/hw/ocrdma/ocrdma_hw.h')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_hw.h7
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,